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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM 10-K


[X] Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


For the fiscal year ended December 31, 20172020
or
[ ] Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


For the transition period from ______ to _______

CommissionExact name of registrant as specified in its charter;IRS Employer
File NumberState or other jurisdiction of incorporation or organizationIdentification No.
001-14881BERKSHIRE HATHAWAY ENERGY COMPANY94-2213782
(An Iowa Corporation)
666 Grand Avenue, Suite 500
Des Moines, Iowa 50309-2580
515-242-4300
Commission001-05152Exact name of registrant as specified in its charter;PACIFICORPIRS Employer93-0246090
File NumberState or other jurisdiction of incorporation or organizationIdentification No.
001-14881BERKSHIRE HATHAWAY ENERGY COMPANY94-2213782
(An Iowa Corporation)
666 Grand Avenue, Suite 500
Des Moines, Iowa 50309-2580
515-242-4300
001-05152PACIFICORP93-0246090
(An Oregon Corporation)
825 N.E. Multnomah Street
Portland, Oregon 97232
888-221-7070
333-90553MIDAMERICAN FUNDING, LLC47-0819200
(An Iowa Limited Liability Company)
666 Grand Avenue, Suite 500
Des Moines, Iowa 50309-2580
515-242-4300
333-15387MIDAMERICAN ENERGY COMPANY42-1425214
(An Iowa Corporation)
666 Grand Avenue, Suite 500
Des Moines, Iowa 50309-2580
515-242-4300
000-52378NEVADA POWER COMPANY88-0420104
(A Nevada Corporation)
6226 West Sahara Avenue
Las Vegas, Nevada 89146
702-402-5000
000-00508SIERRA PACIFIC POWER COMPANY88-0044418
(A Nevada Corporation)
6100 Neil Road
Reno, Nevada 89511
775-834-4011

775-834-4011
Registrant
001-37591EASTERN ENERGY GAS HOLDINGS, LLC46-3639580
(A Virginia Limited Liability Company)
6603 West Broad Street
Richmond, Virginia 23230
804-613-5100



RegistrantSecurities registered pursuant to Section 12(b) of the Act:
BERKSHIRE HATHAWAY ENERGY COMPANYNone
PACIFICORPNone
MIDAMERICAN FUNDING, LLCNone
MIDAMERICAN ENERGY COMPANYNone
NEVADA POWER COMPANYNone
SIERRA PACIFIC POWER COMPANYNone
EASTERN ENERGY GAS HOLDINGS, LLCNone

RegistrantName of exchange on which registered:
BERKSHIRE HATHAWAY ENERGY COMPANYNone
PACIFICORPNone
MIDAMERICAN FUNDING, LLCNone
MIDAMERICAN ENERGY COMPANYNone
NEVADA POWER COMPANYNone
SIERRA PACIFIC POWER COMPANYNone
EASTERN ENERGY GAS HOLDINGS, LLCNone

RegistrantSecurities registered pursuant to Section 12(g) of the Act:
BERKSHIRE HATHAWAY ENERGY COMPANYNone
PACIFICORPNone
MIDAMERICAN FUNDING, LLCNone
MIDAMERICAN ENERGY COMPANYNone
NEVADA POWER COMPANYCommon Stock, $1.00 stated value
SIERRA PACIFIC POWER COMPANYCommon Stock, $3.75 par value
EASTERN ENERGY GAS HOLDINGS, LLCNone


Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
RegistrantYesNo
BERKSHIRE HATHAWAY ENERGY COMPANYX
PACIFICORPX
MIDAMERICAN FUNDING, LLCX
MIDAMERICAN ENERGY COMPANYX
NEVADA POWER COMPANYX
SIERRA PACIFIC POWER COMPANYX
EASTERN ENERGY GAS HOLDINGS, LLC


Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
RegistrantYesNo
BERKSHIRE HATHAWAY ENERGY COMPANYX
PACIFICORPX
MIDAMERICAN FUNDING, LLCX
MIDAMERICAN ENERGY COMPANYX
NEVADA POWER COMPANYX
SIERRA PACIFIC POWER COMPANYX
EASTERN ENERGY GAS HOLDINGS, LLC






Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
RegistrantYesNo
BERKSHIRE HATHAWAY ENERGY COMPANYX
PACIFICORPX
MIDAMERICAN FUNDING, LLCX
MIDAMERICAN ENERGY COMPANYX
NEVADA POWER COMPANYX
SIERRA PACIFIC POWER COMPANYX
EASTERN ENERGY GAS HOLDINGS, LLC


Indicate by check mark whether the registrants have submitted electronically and posted on their corporate Web sites, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrants were required to submit and post such files).Yes x No o


Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of the registrants' knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x


Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
RegistrantLarge accelerated filerAccelerated filerNon-accelerated filerSmaller reporting companyEmerging growth company
BERKSHIRE HATHAWAY ENERGY COMPANYX
PACIFICORPX
MIDAMERICAN FUNDING, LLCX
MIDAMERICAN ENERGY COMPANYX
NEVADA POWER COMPANYX
SIERRA PACIFIC POWER COMPANYX
EASTERN ENERGY GAS HOLDINGS, LLC


If an emerging growth company, indicate by check mark if the registrants have elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrants are a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes o No x


All shares of outstanding common stock of Berkshire Hathaway Energy Company are privately held by a limited group of investors. As of February 16, 2018, 77,174,325January 31, 2021, 76,368,874 shares of common stock, no par value, were outstanding.


All shares of outstanding common stock of PacifiCorp are indirectly owned by Berkshire Hathaway Energy Company. As of February 16, 2018,January 31, 2021, 357,060,915 shares of common stock, no par value, were outstanding.


All of the member's equity of MidAmerican Funding, LLC is held by its parent company, Berkshire Hathaway Energy Company, as of February 16, 2018.

AllJanuary 31, 2021.All shares of outstanding common stock of MidAmerican Energy Company are owned by its parent company, MHC Inc., which is a direct, wholly owned subsidiary of MidAmerican Funding, LLC. As of February 16, 2018,January 31, 2021, 70,980,203 shares of common stock, no par value, were outstanding.






All shares of outstanding common stock of Nevada Power Company and its subsidiaries are owned by its parent company, NV Energy, Inc., which is an indirect, wholly owned subsidiary of Berkshire Hathaway Energy Company. As of February 16, 2018,January 31, 2021, 1,000 shares of common stock, $1.00 stated value, were outstanding.



All shares of outstanding common stock of Sierra Pacific Power Company are owned by its parent company, NV Energy, Inc. As of February 16, 2018,January 31, 2021, 1,000 shares of common stock, $3.75 par value, were outstanding.


All of the member's equity of Eastern Energy Gas Holdings, LLC is held indirectly by its parent company, Berkshire Hathaway Energy Company, as of January 31, 2021.

Berkshire Hathaway Energy Company, MidAmerican Funding, LLC and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries, Sierra Pacific Power Company and Eastern Energy Gas Holdings, LLC and its subsidiaries meet the conditions set forth in General Instruction I(1)(a) and (b) of Form 10-K and are therefore filing portions of this Form 10-K with the reduced disclosure format specified in General Instruction I(2) of Form 10-K.10‑K.


This combined Form 10-K is separately filed by Berkshire Hathaway Energy Company, PacifiCorp and its subsidiaries, MidAmerican Funding, LLC and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries, Sierra Pacific Power Company.Company and Eastern Energy Gas Holdings, LLC and its subsidiaries. Information contained herein relating to any individual company is filed by such company on its own behalf. Each company makes no representation as to information relating to the other companies.






TABLE OF CONTENTS
 
PART I
Mine Safety Disclosures
PART II
PART III
PART IV



i



Definition of Abbreviations and Industry Terms


When used in Forward-Looking Statements, Part I - Items 1 through 4, Part II - Items 5 through 7A, and Part III - Items 10 through 14, the following terms have the definitions indicated.
Entity Definitions
BHEBerkshire Hathaway Energy Company
Berkshire HathawayBerkshire Hathaway Inc.
Berkshire Hathaway Energy or the CompanyBerkshire Hathaway Energy Company and its subsidiaries
PacifiCorpPacifiCorp and its subsidiaries
MidAmerican FundingMidAmerican Funding, LLC and its subsidiaries
MidAmerican EnergyMidAmerican Energy Company
NV EnergyNV Energy, Inc. and its subsidiaries
Nevada PowerNevada Power Company and its subsidiaries
Sierra PacificSierra Pacific Power Company
Nevada UtilitiesNevada Power Company and its subsidiaries and Sierra Pacific Power Company
Eastern Energy GasEastern Energy Gas Holdings, LLC and its subsidiaries
RegistrantsBerkshire Hathaway Energy Company, PacifiCorp and its subsidiaries, MidAmerican Funding, LLC and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries, Sierra Pacific Power Company and Eastern Energy Gas Holdings, LLC and its subsidiaries
Nevada UtilitiesSubsidiary RegistrantsPacifiCorp and its subsidiaries, MidAmerican Funding, LLC and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries, Sierra Pacific Power Company and Eastern Energy Gas Holdings, LLC and its subsidiaries
RegistrantsBerkshire Hathaway Energy, PacifiCorp, MidAmerican Energy, MidAmerican Funding, Nevada Power and Sierra Pacific
Subsidiary RegistrantsPacifiCorp, MidAmerican Energy, MidAmerican Funding, Nevada Power and Sierra Pacific
Northern PowergridNorthern Powergrid Holdings Company
BHE GT&SBHE GT&S, LLC
Northern Natural GasNorthern Natural Gas Company
Kern RiverKern River Gas Transmission Company
AltaLinkBHE CanadaBHE Canada Holdings Corporation
ALPAltaLinkAltaLink, L.P.
BHE U.S. TransmissionBHE U.S. Transmission, LLC
BHE Renewables, LLCBHE Renewables, LLC
HomeServicesHomeServices of America, Inc. and its subsidiaries
BHE Pipeline Group or Pipeline CompaniesConsists of Northern Natural Gas and Kern River
BHE TransmissionConsists of AltaLink and BHE U.S. Transmission
BHE RenewablesConsists of BHE Renewables,GT&S, LLC, and CalEnergy Philippines
ETTElectric Transmission Texas, LLC
Domestic Regulated BusinessesPacifiCorp, MidAmerican Energy Company, Nevada Power Company, Sierra Pacific Power Company, Northern Natural Gas Company and Kern River Gas Transmission Company
BHE TransmissionBHE Canada Holdings Corporation and BHE U.S. Transmission, LLC
BHE RenewablesBHE Renewables, LLC and CalEnergy Philippines
ETTElectric Transmission Texas, LLC
Domestic Regulated BusinessesPacifiCorp and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries, Sierra Pacific Power Company, BHE GT&S, LLC, Northern Natural Gas Company and Kern River Gas Transmission Company
Regulated BusinessesPacifiCorp and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries, Sierra Pacific Power Company, BHE GT&S, LLC, Northern Natural Gas Company, Kern River Gas Transmission Company and AltaLink, L.P.
UtilitiesPacifiCorp and its subsidiaries, MidAmerican Energy Company, Nevada Power Company and its subsidiaries and Sierra Pacific Power Company
Northern Powergrid Distribution CompaniesNorthern Powergrid (Northeast) Limitedplc and Northern Powergrid (Yorkshire) plc
Berkshire HathawayTopazBerkshire Hathaway Inc.
TopazTopaz Solar Farms LLC
Topaz Project550-megawatt solar project in California
Agua CalienteAgua Caliente Solar, LLC
ii


Agua Caliente Project290-megawatt solar project in Arizona
Bishop Hill IIBishop Hill Energy II LLC
Bishop Hill Project81-megawatt wind-powered generating facility in Illinois
Pinyon Pines IPinyon Pines Wind I, LLC

ii


Pinyon Pines IIPinyon Pines Wind II, LLC
Pinyon Pines Projects168-megawatt and 132-megawatt wind-powered generating facilities in California
Jumbo RoadJumbo Road Holdings, LLC
Jumbo Road Project300-megawatt wind-powered generating facility in Texas
Solar Star FundingSolar Star Funding, LLC
Solar Star ProjectsA combined 586-megawatt solar project in California
Solar Star ISolar Star California XIX, LLC
Solar Star IISolar Star California XX, LLC
Cove PointCove Point LNG, LP
EGTSEastern Gas Transmission and Storage, Inc.
GT&S TransactionThe acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy and Dominion Questar, exclusive of the Questar Pipeline Group on November 1, 2020
DEIDominion Energy, Inc.
Dominion QuestarDominion Energy Questar Corporation
Questar Pipeline GroupDominion Energy Questar Pipeline, LLC and related entities
Liquefaction FacilityA natural gas export/liquefaction facility
Atlantic Coast PipelineAtlantic Coast Pipeline, LLC
Dominion Energy Gas RestructuringThe acquisition of DCP and Eastern MLP Holding Company II, LLC (formerly known as Dominion MLP Holding Company II, LLC) from, and the disposition of East Ohio and EGP to, DEI by Eastern Energy Gas Holdings, LLC on November 6, 2019
DCPCPMLP Holdings Company, LLC (formerly known as Dominion Cove Point, LLC)
Certain Industry Terms
AESO2017 Tax ReformThe Tax Cuts and Jobs Act enacted on December 22, 2017, effective January 1, 2018
AESOAlberta Electric System Operator
AFUDCAllowance for Funds Used During Construction
AUCAOCIAccumulated Other Comprehensive Income (Loss)
AROAsset Retirement Obligation
ASCAccounting Standards Codification
AUCAlberta Utilities Commission
BcfBARTBest Available Retrofit Technology
BcfBillion cubic feet
BTERBase Tariff Energy RatesRate
California ISOCalifornia Independent System Operator Corporation
CPUCCCRCoal Combustion Residuals
COVID-19Coronavirus Disease 2019
CPUCCalifornia Public Utilities Commission
DEAACSAPRCross-State Air Pollution Rule
D.C. CircuitUnited States Court of Appeals for the District of Columbia Circuit
DEAADeferred Energy Accounting Adjustment
Dodd-Frank Reform ActDodd-Frank Wall Street Reform and Consumer Protection Act
DthDecathermsDecatherm
iii


DSMDemand-side Management
EBAEnergy Balancing Account
ECACEnergy Cost Adjustment Clause
ECAMEnergy Cost Adjustment Mechanism
EEIREnergy Efficiency Implementation Rate
EEPREnergy Efficiency Program Rate
EIMEnergy Imbalance Market
EPAUnited States Environmental Protection Agency
ERCOTElectric Reliability Council of Texas
FERCFederal Energy Regulatory Commission
GEMAGAAPAccounting principles generally accepted in the United States of America
GEMAGas and Electricity Markets Authority
GHGGreenhouse Gases
GWhGigawatt HoursHour
ICCIllinois Commerce Commission
IPUCIdaho Public Utilities Commission
IRPIntegrated Resource Plan
IUBIowa Utilities Board
kVKilovolt
LNGLiquefied Natural Gas
LDCLocal Distribution Company
MATSMercury and Air Toxics Standards
MISOMidcontinent Independent System Operator, Inc.
MWMegawattsMegawatt
MWhMegawatt HoursHour
NERCNAAQSNational Ambient Air Quality Standards
NERCNorth American Electric Reliability Corporation
NRC
NOx
Nitrogen Oxides
NRCNuclear Regulatory Commission
OCAOATTOpen Access Transmission Tariff
OCAIowa Office of Consumer Advocate

iii


OCIOther Comprehensive Income (Loss)
OPUCOfgemOffice of Gas and Electric Markets
OPUCOregon Public Utility Commission
PCAMPower Cost Adjustment Mechanism
PTAMPGAPurchased Gas Adjustment Clause
PTAMPost Test-year Adjustment Mechanism
PUCNPTCProduction Tax Credit
PUCNPublic Utilities Commission of Nevada
RCRAResource Conservation and Recovery Act
RECRACRenewable Adjustment Clause
RECRenewable Energy Credit
RPSRenewable Portfolio Standards
RRARenewable Energy Credit and Sulfur Dioxide Revenue Adjustment Mechanism
RTORegional Transmission Organization
SECSCRSelective Catalytic Reduction
SECUnited States Securities and Exchange Commission
iv


SIPState Implementation Plan
TAM
SO2
Sulfur Dioxide
TAMTransition Adjustment Mechanism
UPSCUtah Public Service Commission
WECCVIEVariable Interest Entity
WECCWestern Electricity Coordinating Council
WPSCWyoming Public Service Commission
WUTCWashington Utilities and Transportation Commission
ZECZero Emission Credit



iv
v



Forward-Looking Statements


This report contains statements that do not directly or exclusively relate to historical facts. These statements are "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements can typically be identified by the use of forward-looking words, such as "will," "may," "could," "project," "believe," "anticipate," "expect," "estimate," "continue," "intend," "potential," "plan," "forecast" and similar terms. These statements are based upon the relevant Registrant's current intentions, assumptions, expectations and beliefs and are subject to risks, uncertainties and other important factors. Many of these factors are outside the control of each Registrant and could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These factors include, among others:
general economic, political and business conditions, as well as changes in, and compliance with, laws and regulations, including income tax reform, initiatives regarding deregulation and restructuring of the utility industry, and reliability and safety standards, affecting the respective Registrant's operations or related industries;
changes in, and compliance with, environmental laws, regulations, decisions and policies that could, among other items, increase operating and capital costs, reduce facility output, accelerate facility retirements or delay facility construction or acquisition;
the outcome of regulatory rate reviews and other proceedings conducted by regulatory agencies or other governmental and legal bodies and the respective Registrant's ability to recover costs through rates in a timely manner;
changes in economic, industry, competition or weather conditions, as well as demographic trends, new technologies and various conservation, energy efficiency and private generation measures and programs, that could affect customer growth and usage, electricity and natural gas supply or the respective Registrant's ability to obtain long-term contracts with customers and suppliers;
performance, availability and ongoing operation of the respective Registrant's facilities, including facilities not operated by the Registrants, due to the impacts of market conditions, outages and repairs, transmission constraints, weather, including wind, solar and hydroelectric conditions, and operating conditions;
the effects of catastrophic and other unforeseen events, which may be caused by factors beyond the control of each respective Registrant or by a breakdown or failure of the Registrants' operating assets, including severe storms, floods, fires, earthquakes, explosions, landslides, an electromagnetic pulse, mining incidents, litigation, wars, terrorism, pandemics (including potentially in relation to COVID-19), embargoes, and cyber security attacks, data security breaches, disruptions, or other malicious acts;
the ability to economically obtain insurance coverage, or any insurance coverage at all, sufficient to cover losses arising from catastrophic events, such as wildfires where the Registrants may be found liable for property damages regardless of fault;
a high degree of variance between actual and forecasted load or generation that could impact a Registrant's hedging strategy and the cost of balancing its generation resources with its retail load obligations;
changes in prices, availability and demand for wholesale electricity, coal, natural gas, other fuel sources and fuel transportation that could have a significant impact on generating capacity and energy costs;
the financial condition, creditworthiness and creditworthinessoperational stability of the respective Registrant's significant customers and suppliers;
changes in business strategy or development plans;
availability, terms and deployment of capital, including reductions in demand for investment-grade commercial paper, debt securities and other sources of debt financing and volatility in interest rates;
changes in the respective Registrant's credit ratings;
risks relating to nuclear generation, including unique operational, closure and decommissioning risks;
hydroelectric conditions and the cost, feasibility and eventual outcome of hydroelectric relicensing proceedings;
the impact of certain contracts used to mitigate or manage volume, price and interest rate risk, including increased collateral requirements, and changes in commodity prices, interest rates and other conditions that affect the fair value of certain contracts;
the impact of inflation on costs and the ability of the respective Registrants to recover such costs in regulated rates;
fluctuations in foreign currency exchange rates, primarily the British pound and the Canadian dollar;
vi


increases in employee healthcare costs;
the impact of investment performance, certain participant elections such as lump sum distributions and changes in interest rates, legislation, healthcare cost trends, mortality, and morbidity on pension and other postretirement benefits expense and funding requirements;

v


changes in the residential real estate brokerage, mortgage and franchising industries and regulations that could affect brokerage, mortgage and franchising transactions;
the ability to successfully integrate the portion of the natural gas transmission and storage business acquired from DEI on November 1, 2020, and future acquired operations into a Registrant's business;
the expected timing and likelihood of completion of the proposed transaction to acquire the remaining portion of DEI's natural gas transmission and storage business, including the ability to obtain the required clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended;
unanticipated construction delays, changes in costs, receipt of required permits and authorizations, ability to fund capital projects and other factors that could affect future facilities and infrastructure additions;
the availability and price of natural gas in applicable geographic regions and demand for natural gas supply;
the impact of new accounting guidance or changes in current accounting estimates and assumptions on the consolidated financial results of the respective Registrants; and
other business or investment considerations that may be disclosed from time to time in the Registrants' filings with the SEC or in other publicly disseminated written documents.


Further details of the potential risks and uncertainties affecting the Registrants are described in the Registrants' filings with the SEC, including Item 1A and other discussions contained in this Form 10-K. Each Registrant undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. The foregoing factors should not be construed as exclusive.



vi
vii



PART I


Item 1.Business


GENERAL


BHE is a holding company that owns a highly diversified portfolio of locally managed businesses principally engaged in the energy industry and is a consolidated subsidiary of Berkshire Hathaway. As of February 16, 2018,January 31, 2021, Berkshire Hathaway, Mr. Walter Scott, Jr., a member of BHE's Board of Directors (along with his family members and related or affiliated entities) and Mr. Gregory E. Abel, BHE's Executive Chairman, beneficially owned 90.2%91.1%, 8.8%7.9% and 1.0%, respectively, of BHE's voting common stock.


Berkshire Hathaway Energy's operations are organized as eight business segments: PacifiCorp, MidAmerican Funding (which primarily consists of MidAmerican Energy), NV Energy (which primarily consists of Nevada Power and Sierra Pacific), Northern Powergrid (which primarily consists of Northern Powergrid (Northeast) Limitedplc and Northern Powergrid (Yorkshire) plc), BHE Pipeline Group (which primarily consists of BHE GT&S, Northern Natural Gas and Kern River), BHE Transmission (which consists of AltaLinkBHE Canada (which primarily consists of AltaLink) and BHE U.S. Transmission), BHE Renewables and HomeServices. BHE, through these locally managed and operated businesses, owns four utility companies in the United States serving customers in 11 states, two electricity distribution companies in Great Britain, twofive interstate natural gas pipeline companies, one of which owns an LNG import, export and storage facility, in the United States, an electric transmission business in Canada, interests in electric transmission businesses in the United States, a renewable energy business primarily investing in wind, solar, wind, geothermal and hydroelectric projects, the second largest residential real estate brokerage firm in the United States and one of the largest residential real estate brokerage franchise networks in the United States.


BHE owns a highly diversified portfolio of primarily regulated businesses that generate, transmit, store, distribute and supply energy and serve customers and end-users across geographically diverse service territories, inincluding 28 states located throughout the WesternUnited States and Midwestern United States,in Great Britain and Canada.
89%83% of Berkshire Hathaway Energy's consolidated operating income during 20172020 was generated from rate-regulated businesses.
The Utilities serve 4.95.2 million electric and natural gas customers in 11 states in the United States, Northern Powergrid serves 3.9 million end-users in northern England and ALPAltaLink serves approximately 85% of Alberta, Canada's population.
As of December 31, 2017, Berkshire Hathaway Energy owned2020, the Company owns approximately 31,800 MW33,700 MWs of generation capacity in operation and under construction:
Approximately 29,000 MWs of generation capacity is owned by its regulated electric utility businesses;
Approximately 27,500 MW of generation capacity is owned by its regulated electric utility businesses;
Approximately 4,300 MW of generation capacity is owned by its nonregulated subsidiaries, the majority of which provides power to utilities under long-term contracts;
Berkshire Hathaway Energy's generation capacity in operation and under construction consists of 33% natural gas, 31% wind and solar, 29% coal, 4% hydroelectric and 3% nuclear and other; and
As of December 31, 2017, Berkshire Hathaway Energy has invested $21 billion in solar, wind, geothermal and biomass generation facilities.
Berkshire Hathaway EnergyApproximately 4,700 MWs of generation capacity is owned by its nonregulated subsidiaries, the majority of which provides power to utilities under long-term contracts;
Owned generation capacity in operation and under construction consists of 38% wind and solar, 32% natural gas, 24% coal, 5% hydroelectric and geothermal and 1% nuclear and other; and,
Cumulative investments in wind, solar, geothermal and biomass generation facilities is approximately $34 billion.
The Company owns approximately 32,90036,000 miles of transmission lines and owns a 50% interest in ETT that has approximately 1,2001,900 miles of transmission lines.
The BHE Pipeline Group ownsoperates approximately 16,40021,300 miles of pipeline with a market area design capacity of approximately 8.121 Bcf of natural gas per day, serves customers and end-users in 23 states and transported approximately 8%15% of the total natural gas consumed in the United States during 2017.
2020. The BHE Pipeline Group also operates 20 natural gas storage facilities with a total operating storage design capacity of 499 Bcf.
HomeServices closed over $107.8$152.2 billion of home sales in 2017,2020, up 24.6%13.1% from 2016,2019, and continued to grow its brokerage, mortgage and franchise businesses.businesses, with services in all 50 states. HomeServices' franchise business operateshas approximately 370 franchisees primarily in 47 statesthe United States and internationally.
1


Human Capital

The Registrants are committed to attracting, retaining and developing the highest quality of employees; maintaining a safe, diverse and inclusive work environment; offering competitive compensation and benefit programs; and providing employees with over 365 franchisees throughout the country.
opportunities for growth and development.


Employees

As of December 31, 2017, Berkshire Hathaway Energy2020, BHE had approximately 23,00023,800 employees, consisting of which approximately 8,30014,200 (60%) electric and natural gas operations employees, approximately 6,300 (26%) real estate services employees and approximately 3,300 (14%) corporate services employees. HomeServices has approximately 43,000 real estate agents who are independent contractors. As of December 31, 2020, approximately 8,200 BHE employees were covered by union contracts. The majority of the union employees are employed by the Utilities and are represented by the International Brotherhood of Electrical Workers, the Utility Workers Union of America, the United Utility Workers Association and the International Brotherhood of Boilermakers. These collective bargaining agreements have expiration dates ranging through August 2024. HomeServices currently has nearly 41,000 real estate agents who

Safety

Safety and security are independent contractorsintegral to the Registrants' culture and not employees.


Refer to Note 21will always be one of the NotesRegistrants' top priorities. The Registrants' safety, cyber and physical security programs are built on personal ownership, compliance with standards, accountability for performance, and continuous improvement. The Registrants' provide best-in-class training to Consolidated Financial Statementsensure that all employees understand the risks and have thorough and specific knowledge to protect themselves, as well as the Registrants' assets, information and operations.

The Registrants use the recordable incident rate to measure employee safety. The recordable incident rate is defined as the number of Berkshire Hathawaywork-related injuries per 100 full-time workers during a one-year period. The recordable incident rates for each of the Registrants are included below:

Year Ended
December 31, 2020
Recordable Incident Rate:
PacifiCorp0.92 
MidAmerican Energy0.73 
Nevada Power0.51 
Sierra Pacific0.96 
Eastern Energy Gas0.59 
BHE Overall0.51 

Compensation and Benefits

The Registrants' commitment to employees is further demonstrated through competitive compensation and benefits and by providing opportunities for personal growth and career development. In addition to market-based salary, the Registrants' compensation packages include incentive programs to recognize and reward outstanding performance. The Registrants' benefits programs are designed to meet the diverse needs of employees and their families and includes, among other benefits:

A comprehensive and flexible benefits package that includes medical, dental and vision coverage; employee assistance programs; pre-tax flexible spending accounts; and adoption assistance;
Income protection that includes options for short- and long-term disability coverage and life insurance;
Retirement planning that includes a retirement savings plan 401(k) and a variety of employee and employer contribution and matching options;
Family Medical Leave as well as paid time off and holiday benefits; and
Career development opportunities that provide access to a variety of learning programs and career development support, including tuition reimbursement.
2


BHE was incorporated under the laws of the state of Iowa in Item 8 of this Form 10-K for additional reportable segment information.

BHE's1999 and its principal executive offices are located at 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580, and its telephone number is (515) 242-4300. BHE was initially incorporated in 1971 as California Energy Company, Inc. under the laws of the state of Delaware242-4300 and through a merger transaction in 1999 was reincorporated in Iowa under the name MidAmerican Energy Holdings Company. In 2014, its name was changed to Berkshire Hathaway Energy Company.internet address is www.brkenergy.com.


PACIFICORP


General


PacifiCorp, an indirect wholly owned subsidiary of BHE, is a United States regulated electric utility company headquartered in Oregon that serves 1.9approximately 2.0 million retail electric customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp is principally engaged in the business of generating, transmitting, distributing and selling electricity. PacifiCorp's combined service territory covers approximately 141,000141,400 square miles and includes diverse regional economies across six states. No single segment of the economy dominates the combined service territory, which helps mitigate PacifiCorp's exposure to economic fluctuations. In the eastern portion of the service territory, consisting of Utah, Wyoming and southeastern Idaho, the principal industries are manufacturing, mining or extraction of natural resources, agriculture, technology, recreation and government. In the western portion of the service territory, consisting of Oregon, southern Washington and northern California, the principal industries are agriculture, manufacturing, forest products, food processing, technology, government and primary metals. In addition to retail sales, PacifiCorp buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants to balance and optimize the economic benefits of electricity generation, retail customer loads and existing wholesale transactions. Certain PacifiCorp subsidiaries support its electric utility operations by providing coal mining services.


PacifiCorp's operations are conducted under numerous franchise agreements, certificates, permits and licenses obtained from federal, state and local authorities. The average term of the franchise agreements is approximately 25 years, although their terms range from five years to indefinite.22 years. Several of these franchise agreements allow the municipality the right to seek amendment to the franchise agreement at a specified time during the term. PacifiCorp generally has an exclusive right to serve electric customers within its service territories and, in turn, has an obligation to provide electric service to those customers. In return, the state utility commissions have established rates on a cost-of-service basis, which are designed to allow PacifiCorp an opportunity to recover its costs of providing services and to earn a reasonable return on its investments.


PacifiCorp'sPacifiCorp was incorporated under the laws of the state of Oregon in 1989 and its principal executive offices are located at 825 N.E. Multnomah Street, Portland, Oregon 97232, and its telephone number is (888) 221-7070. PacifiCorp was initially incorporated in 1910 under the laws of the state of Maine under the name Pacific Power & Light Company. In 1984, Pacific Power & Light Company changed221-7070 and its name to PacifiCorp. In 1989, it merged with Utah Power and Light Company, a Utah corporation, in a transaction wherein both corporations merged into a newly formed Oregon corporation. The resulting Oregon corporation was re-named PacifiCorp, whichinternet address is the operating entity today.www.pacificorp.com. PacifiCorp delivers electricity to customers in Utah, Wyoming and Idaho under the trade name Rocky Mountain Power and to customers in Oregon, Washington and California under the trade name Pacific Power.


BHE controls substantially allAll shares of PacifiCorp's common stock are indirectly owned by BHE. PacifiCorp also has shares of preferred stock outstanding that are subject to voting securities, which include both common and preferred stock.rights in certain limited circumstances.



Regulated Electric Operations


Customers


The GWhGWhs and percentages of electricity sold to PacifiCorp's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Utah24,851 46 %24,490 45 %24,514 45 %
Oregon12,993 24 13,089 24 12,867 23 
Wyoming8,358 15 9,393 17 9,393 17 
Washington4,065 4,145 3,949 
Idaho3,534 3,485 3,643 
California759 741 749 
Total54,560 100 %55,343 100 %55,115 100 %

3

 2017 2016 2015
            
Utah24,134
 44% 24,020
 44% 24,158
 44%
Oregon13,200
 24
 12,869
 24
 12,863
 24
Wyoming9,330
 17
 9,189
 17
 9,330
 17
Washington4,221
 8
 3,982
 7
 4,108
 8
Idaho3,603
 6
 3,510
 7
 3,443
 6
California762
 1
 748
 1
 739
 1
 55,250
 100% 54,318
 100% 54,641
 100%


Electricity sold to PacifiCorp's retail and wholesale customers by class of customer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
GWhs sold:
Residential17,150 29 %16,668 27 %16,227 26 %
Commercial17,727 29 18,151 30 18,078 28 
Industrial, irrigation and other19,683 33 20,524 34 20,810 33 
Total retail54,560 91 55,343 91 55,115 87 
Wholesale5,249 5,480 8,309 13 
Total GWhs sold59,809 100 %60,823 100 %63,424 100 %
Average number of retail customers (in thousands):
Residential1,713 87 %1,682 87 %1,651 87 %
Commercial217 11 214 11 212 11 
Industrial, irrigation and other37 37 37 
Total1,967 100 %1,933 100 %1,900 100 %
 2017 2016 2015
GWh sold:           
Residential16,625
 27% 16,058
 26% 15,566
 25%
Commercial(1)
17,726
 28
 16,857
 28
 17,262
 27
Industrial, irrigation, and other(1)
20,899
 33
 21,403
 35
 21,813
 34
Total retail55,250
 88
 54,318
 89
 54,641
 86
Wholesale7,218
 12
 6,641
 11
 8,889
 14
Total GWh sold62,468
 100% 60,959
 100% 63,530
 100%
            
Average number of retail customers (in thousands):           
Residential1,622
 87% 1,599
 87% 1,574
 87%
Commercial208
 11
 205
 11
 202
 11
Industrial, irrigation, and other37
 2
 37
 2
 37
 2
Total1,867
 100% 1,841
 100% 1,813
 100%

(1)In the current year, one customer was reclassified from "Industrial, irrigation and other" into "Commercial" resulting in an increase of 61 GWh to "Commercial."


Variations in weather, economic conditions and various conservation, energy efficiency and private generation measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.


The annual hourly peak customer demand, which represents the highest demand on a given day and at a given hour, occurs in the summer when air conditioning and irrigation systems are heavily used. ThePeak demand in the winter also experiences a peak demandoccurs due to heating requirements. During 2017,2020, PacifiCorp's peak demand was 10,334 MW10,546 MWs in the summer and 9,216 MW8,327 MWs in the winter.



4


Generating Facilities and Fuel Supply


PacifiCorp has ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding PacifiCorp's owned generating facilities as of December 31, 2017:2020:
FacilityNet Owned
Installed /Net CapacityCapacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
COAL(3):
Jim Bridger Nos. 1, 2, 3 and 4Rock Springs, WYCoal1974-19792,119 1,413 
Hunter Nos. 1, 2 and 3Castle Dale, UTCoal1978-19831,363 1,158 
Huntington Nos. 1 and 2Huntington, UTCoal1974-1977909 909 
Dave Johnston Nos. 1, 2, 3 and 4Glenrock, WYCoal1959-1972745 745 
Naughton Nos. 1 and 2Kemmerer, WYCoal1963-1968357 357 
Wyodak No. 1Gillette, WYCoal1978332 266 
Craig Nos. 1 and 2Craig, COCoal1979-1980837 161 
Colstrip Nos. 3 and 4Colstrip, MTCoal1984-19861,480 148 
Hayden Nos. 1 and 2Hayden, COCoal1965-1976441 77 
8,583 5,234 
NATURAL GAS:
Lake Side 2Vineyard, UTNatural gas/steam2014631 631 
Lake SideVineyard, UTNatural gas/steam2007546 546 
Currant CreekMona, UTNatural gas/steam2005-2006524 524 
ChehalisChehalis, WANatural gas/steam2003477 477 
Naughton No. 3(4)
Kemmerer, WYNatural gas1971247 247 
Gadsby SteamSalt Lake City, UTNatural gas1951-1955238 238 
HermistonHermiston, ORNatural gas/steam1996461 231 
Gadsby PeakersSalt Lake City, UTNatural gas2002119 119 
3,243 3,013 
HYDROELECTRIC:
Lewis River SystemWAHydroelectric1931-1958578 578 
North Umpqua River SystemORHydroelectric1950-1956204 204 
Klamath River SystemCA, ORHydroelectric1903-1962170 170 
Bear River SystemID, UTHydroelectric1908-1984105 105 
Rogue River SystemORHydroelectric1912-195752 52 
Minor hydroelectric facilitiesVariousHydroelectric1895-198626 26 
1,135 1,135 
WIND:
Ekola FlatsMedicine Bow, WYWind2020250 250 
MarengoDayton, WAWind2007-2008 / 2020234 234 
TB FlatsMedicine Bow, WYWind2020204 204 
Cedar Springs IIDouglas, WYWind2020199 199 
GlenrockGlenrock, WYWind2008-2009 / 2019139 139 
Seven Mile HillMedicine Bow, WYWind2008 / 2019119 119 
Dunlap RanchMedicine Bow, WYWind2010 / 2020111 111 
Leaning JuniperArlington, ORWind2006 / 2019100 100 
Rolling HillsGlenrock, WYWind2009 / 2019100 100 
High PlainsMcFadden, WYWind2009 / 201999 99 
Goodnoe HillsGoldendale, WAWind2008 / 201994 94 
Foote Creek(5)
Arlington, WYWind199941 41 
McFadden RidgeMcFadden, WYWind2009 / 201928 28 
Pryor MountainBridger, MTWind202020 20 
1,738 1,738 
OTHER:
BlundellMilford, UTGeothermal1984, 200732 32 
32 32 
Total Available Generating Capacity14,731 11,152 
5


        Facility Net Owned
        Net Capacity Capacity
Generating Facility Location Energy Source Installed 
(MW)(1)
 
(MW)(1)
COAL:          
Jim Bridger Nos. 1, 2, 3 and 4 Rock Springs, WY Coal 1974-1979 2,123
 1,415
Hunter Nos. 1, 2 and 3 Castle Dale, UT Coal 1978-1983 1,363
 1,158
Huntington Nos. 1 and 2 Huntington, UT Coal 1974-1977 909
 909
Dave Johnston Nos. 1, 2, 3 and 4 Glenrock, WY Coal 1959-1972 754
 754
Naughton Nos. 1, 2 and 3(2)
 Kemmerer, WY Coal 1963-1971 637
 637
Cholla No. 4 Joseph City, AZ Coal 1981 395
 395
Wyodak No. 1 Gillette, WY Coal 1978 332
 266
Craig Nos. 1 and 2 Craig, CO Coal 1979-1980 855
 165
Colstrip Nos. 3 and 4 Colstrip, MT Coal 1984-1986 1,480
 148
Hayden Nos. 1 and 2 Hayden, CO Coal 1965-1976 441
 77
        9,289
 5,924
NATURAL GAS:          
Lake Side 2 Vineyard, UT Natural gas/steam 2014 631
 631
Lake Side Vineyard, UT Natural gas/steam 2007 546
 546
Currant Creek Mona, UT Natural gas/steam 2005-2006 524
 524
Chehalis Chehalis, WA Natural gas/steam 2003 477
 477
Hermiston Hermiston, OR Natural gas/steam 1996 461
 231
Gadsby Steam Salt Lake City, UT Natural gas 1951-1955 238
 238
Gadsby Peakers Salt Lake City, UT Natural gas 2002 119
 119
        2,996
 2,766
HYDROELECTRIC:(3)
          
Lewis River System WA Hydroelectric 1931-1958 578
 578
North Umpqua River System OR Hydroelectric 1950-1956 204
 204
Klamath River System CA, OR Hydroelectric 1903-1962 170
 170
Bear River System ID, UT Hydroelectric 1908-1984 105
 105
Rogue River System OR Hydroelectric 1912-1957 52
 52
Minor hydroelectric facilities Various Hydroelectric 1895-1986 26
 26
        1,135
 1,135
WIND:(3)
          
Foote Creek Arlington, WY Wind 1999 41
 32
Leaning Juniper Arlington, OR Wind 2006 100
 100
Marengo Dayton, WA Wind 2007-2008 210
 210
Seven Mile Hill Medicine Bow, WY Wind 2008 119
 119
Goodnoe Hills Goldendale, WA Wind 2008 94
 94
Glenrock Glenrock, WY Wind 2008-2009 138
 138
High Plains McFadden, WY Wind 2009 99
 99
Rolling Hills Glenrock, WY Wind 2009 99
 99
McFadden Ridge McFadden, WY Wind 2009 28
 28
Dunlap Ranch Medicine Bow, WY Wind 2010 111
 111
        1,039
 1,030
OTHER:(3)
          
Blundell Milford, UT Geothermal 1984, 2007 32
 32
        32
 32
Total Available Generating Capacity     14,491
 10,887
PROJECTS UNDER CONSTRUCTION:
Various wind projects(6)
516 516 
15,247 11,668 


(1)
Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MW) under specified conditions. Net Owned Capacity indicates PacifiCorp's ownership of Facility Net Capacity.
(2)As required by previous state permits, PacifiCorp planned to remove Naughton Unit No. 3 (280 MW) from coal-fueled service by year-end 2017. However, a request was submitted to and was considered by the state of Wyoming that would allow the unit to operate as a coal-fueled unit until no later than January 30, 2019, and then either close or be converted to natural gas. On March 17, 2017, the state of Wyoming issued the extension to operate the unit as a coal-fueled unit through January 30, 2019. Also, the updated Wyoming regional haze state implementation plan reflecting the extension has been submitted to the EPA for review and action. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion.
(3)All or some of the renewable energy attributes associated with generation from these generating facilities may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of RECs or other environmental commodities.

(1)Repowered dates are associated with component replacements on existing wind-powered generating facilities commonly referred to by the Internal Revenue Service ("IRS") as repowering. IRS rules provide for re-establishment of the PTCs for an existing wind-powered generating facility upon the replacement of a significant portion of its components. If the degree of component replacement in such projects meets IRS guidelines, PTCs are re-established for ten years at rates that depend upon the date on which construction begins.
(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates PacifiCorp's ownership of Facility Net Capacity.
(3)Cholla Unit 4 was retired in December 2020 consistent with the preferred portfolio in PacifiCorp's 2019 IRP. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion.
(4)Naughton Unit 3 was removed from coal-fueled service in January 2019. PacifiCorp determined in its 2019 IRP that converting Naughton Unit 3 to a natural gas-fueled generation resource provides economic benefits to customers. PacifiCorp completed the conversion to natural gas in 2020.

(5)Foote Creek is in the process of being repowered and is expected to be completed in 2021.

(6)Includes portions of TB Flats and Pryor Mountain projects that remain under construction.

The following table shows the percentages of PacifiCorp's total energy supplied by energy source for the years ended December 31:
202020192018
Coal48 %53 %54 %
Natural gas19 19 16 
Hydroelectric(1)
Wind and other(1)
Total energy generated78 80 80 
Energy purchased - short-term contracts and other10 10 10 
Energy purchased - long-term contracts (renewable)(1)
12 10 10 
100 %100 %100 %
 2017 2016 2015
      
Coal56% 56% 61%
Natural gas11
 15
 14
Hydroelectric(1)
7
 6
 4
Wind and other(1)
5
 5
 4
Total energy generated79
 82
 83
Energy purchased - short-term contracts and other11
 10
 9
Energy purchased - long-term contracts (renewable)(1)
10
 8
 5
Energy purchased - long-term contracts (non-renewable)
 
 3
 100% 100% 100%


(1)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.
(1)
All or some of the renewable energy attributes associated with generation from these generating facilities and purchases may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.


PacifiCorp is required to have resources available to continuously meet its customer needs and reliably operate its electric system. The percentage of PacifiCorp's energy supplied by energy source varies from year to year and is subject to numerous operational and economic factors such as planned and unplanned outages, fuel commodity prices, fuel transportation costs, weather, environmental considerations, transmission constraints and wholesale market prices of electricity. PacifiCorp evaluates these factors continuously in order to facilitate economical dispatch of its generating facilities. When factors for one energy source are less favorable, PacifiCorp places more reliance on other energy sources. For example, PacifiCorp can generate more electricity using its low cost hydroelectric and wind-powered generating facilities when factors associated with these facilities are favorable. In addition to meeting its customers' energy needs, PacifiCorp is required to maintain operating reserves on its system to mitigate the impacts of unplanned outages or other disruption in supply, and to meet intra-hour changes in load and resource balance. This operating reserve requirement is dispersed across PacifiCorp's generation portfolio on a least-cost basis based on the operating characteristics of the portfolio. Operating reserves may be held on hydroelectric, coal-fueled, natural gas-fueled or certain types of interruptible load. PacifiCorp manages certain risks relating to its supply of electricity and fuel requirements by entering into various contracts, which may be accounted for as derivatives and may include forwards, options, swaps and other agreements. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction and to PacifiCorp's Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.


6


Coal


PacifiCorp has interests in coal mines that support its coal-fueled generating facilities and jointly operates the Bridger surface and Bridger underground coal mines. These mines supplied 16%, 15%19% and 18%17% of PacifiCorp's total coal requirements during the years ended December 31, 2017, 20162020, 2019 and 2015,2018, respectively. The remaining coal requirements are acquired through long and short-term third-party contracts.



Most of PacifiCorp's coal reserves are held through agreements with the federal Bureau of Land Management and from certain states and private parties. The agreements generally have multi-year terms that may be renewed or extended and require payment of rents and royalties. In addition, federal and state regulations require that comprehensive environmental protection and reclamation standards be met during the course of mining operations and upon completion of mining activities.


Coal reserve estimates are subject to adjustment as a result of the development of additional engineering and geological data, new mining technology and changes in regulation and economic factors affecting the utilization of such reserves. PacifiCorp's recoverable coal reserves of operating mines as of December 31, 2017, based on recent engineering studies, were as follows (in millions):

Coal Mine Location Generating Facility Served Mining Method Recoverable Tons
         
Bridger Rock Springs, WY Jim Bridger Surface 29
(1)
Bridger Rock Springs, WY Jim Bridger Underground 6
(1)
Trapper Craig, CO Craig Surface 4
(2)
        39
 

(1)These coal reserves are leased and mined by Bridger Coal Company, a joint venture between Pacific Minerals, Inc. and a subsidiary of Idaho Power Company. Pacific Minerals, Inc., a wholly owned subsidiary of PacifiCorp, has a two-thirds interest in the joint venture. The amounts included above represent only PacifiCorp's two-thirds interest in the coal reserves.
(2)These coal reserves are leased and mined by Trapper Mining Inc., a cooperative in which PacifiCorp has an ownership interest of 21%. The amount included above represents only PacifiCorp's 21% interest in the coal reserves. PacifiCorp does not operate the Trapper mine.

Recoverability by surface mining methods typically ranges from 90% to 95%. Recoverability by underground mining techniques ranges from 50% to 70%. To meet applicable standards, PacifiCorp blends coal mined atfrom its owned mines with contracted coal and utilizes emissions reduction technologies for controlling sulfur dioxideSO2 and other emissions. For fuel needs at PacifiCorp's coal-fueled generating facilities in excess of coal reserves available, PacifiCorp believes it will be able to purchase coal under both longlong- and short-term contracts to supply its generating facilities over their currently expected remaining useful lives.


Natural Gas


PacifiCorp uses natural gas as fuel for its combined and simple-cycle natural gas-fueled generating facilities that use combined-cycle, simple-cycle and for the Gadsby Steam generating facility.steam turbines. Oil and natural gas are also used for igniter fuel and standby purposes. These sources are presently in adequate supply and available to meet PacifiCorp's needs.


PacifiCorp enters into forward natural gas purchases at fixed or indexed market prices. PacifiCorp purchases natural gas in the spot market with both fixed and indexed market prices for physical delivery to fulfill any fuel requirements not already satisfied through forward purchases of natural gas and sells natural gas in the spot market for the disposition of any excess supply if the forecasted requirements of its natural gas-fueled generating facilities decrease. PacifiCorp also utilizes financial swap contracts to mitigate price risk associated with its forecasted fuel requirements.


Hydroelectric


The amount of electricity PacifiCorp is able to generate from its hydroelectric facilities depends on a number of factors, including snowpack in the mountains upstream of its hydroelectric facilities, reservoir storage, precipitation in its watersheds, generating unit availability and restrictions imposed by oversight bodies due to competing water management objectives.


PacifiCorp operates the majority of its hydroelectric generating portfolio under long-term licenses. The FERC regulates 99% of the net capacity of this portfolio through 15 individual licenses, which have terms of 30 to 50 years. The licenses for major hydroelectric generating facilities expire at various dates through May 2058.2059. A portion of this portfolio is licensed under the Oregon Hydroelectric Act. For discussion of PacifiCorp's hydroelectric relicensing activities, including updated information regarding the Klamath River hydroelectric system, refer to Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 1314 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K.



7


Wind and Other Renewable Resources


PacifiCorp has pursued renewable resources as a viable, economical and environmentally prudent means of supplying electricity and complying with laws and regulations. Renewable resources have low to no emissions and require little or no fossil fuel. PacifiCorp'sPacifiCorp is repowering all of its existing wind-powered generating facilities including those facilities whereby replacing a significant portion of the equipment is expected to be replaced, are eligiblerequalify the facilities for federal renewable electricity production tax creditsPTCs for 10ten years from the date the repowered facilities arewere placed in-service. Production tax credits for PacifiCorp's currently eligibleThe repowering project will extend the lives of the existing wind facilities and increase the anticipated electrical generation from the repowered wind facilities, on average, by approximately 26%. Additionally, new wind-powered generating facilities began expiringtotaling 674 MWs were placed in-service during 2020 with another 516 MWs expected to be placed in-service during 2021. The energy production from the new wind-powered generating facilities is expected to qualify for 100% of the federal PTCs available for ten years once the equipment is placed in-service. In addition to the discussion contained herein regarding repowering activities, refer to "Regulatory Matters" in 2016, with final expiration in 2020.Item 1 of this Form 10-K.


Wholesale Activities


PacifiCorp purchases and sells electricity in the wholesale markets as needed to balance its generation with its retail load obligations. PacifiCorp may also purchase electricity in the wholesale markets when it is more economical than generating electricity from its own facilities and may sell surplus electricity in the wholesale markets when it can do so economically. When prudent, PacifiCorp enters into financial swap contracts and forward electricity sales and purchases for physical delivery at fixed prices to reduce its exposure to electricity price volatility.


Transmission and Distribution    Energy Imbalance Market

PacifiCorp operates one balancing authority area in the western portion of its service territory and one balancing authority area in the eastern portion of its service territory. A balancing authority area is a geographic area with transmission systems that control generation to maintain schedules with other balancing authority areas and ensure reliable operations. In operating the balancing authority areas, PacifiCorp is responsible for continuously balancing electricity supply and demand by dispatching generating resources and interchange transactions so that generation internal to the balancing authority area, plus net imported power, matches customer loads. Deliveries of energy over PacifiCorp's transmission system are managed and scheduled in accordance with FERC requirements.

PacifiCorp's transmission system is part of the Western Interconnection, which includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. PacifiCorp's transmission system, together with contractual rights on other transmission systems, enables PacifiCorp to integrate and access generation resources to meet its customer load requirements. PacifiCorp's transmission and distribution systems included approximately 16,500 miles of transmission lines in nine states, 64,000 miles of distribution lines and 900 substations as of December 31, 2017.

PacifiCorp's transmission and distribution system is managed on a coordinated basis to obtain maximum load-carrying capability and efficiency. Portions of PacifiCorp's transmission and distribution systems are located:

On property owned or used through agreements by PacifiCorp;
Under or over streets, alleys, highways and other public places, the public domain and national forests and state lands under franchises, easements or other rights that are generally subject to termination;
Under or over private property as a result of easements obtained primarily from the title holder of record; or
Under or over Native American reservations through agreements with the United States Secretary of Interior or Native American tribes.
It is possible that some of the easements and the property over which the easements were granted may have title defects or may be subject to mortgages or liens existing at the time the easements were acquired.



PacifiCorp and the California ISO implemented an EIM in November 2014, which reduces costs to serve customers through more efficient dispatch of a larger and more diverse pool of resources, more effectively integrates renewables and enhances reliability through improved situational awareness and responsiveness. The EIM expands the real-time component of the California ISO's market technology to optimize and balance electricity supply and demand every five minutes across the EIM footprint. The EIM is voluntary and available to all balancing authorities in the Westernwestern United States. EIM market participants submit bids to the California ISO market operator before each hour for each generating resource they choose to be dispatched by the market. Each bid is comprised of a dispatchable operating range, ramp rate and prices across the operating range. The California ISO market operator uses sophisticated technology to select the least-cost resources to meet demand and send simultaneous dispatch signals to every participating generator across the EIM footprint every five minutes. In addition to generation resource bids, the California ISO market operator also receives continuous real-time updates of the transmission grid network, meteorological and load forecast information that it uses to optimize dispatch instructions. Outside the EIM footprint, utilities in the Westernwestern United States do not utilize comparable technology and are largely limited to transactions within the borders of their balancing authority area to balance supply and demand intra-hour using a combination of manual and automated dispatch. The EIM delivers customer benefits by leveraging automation and resource diversity to result in more efficient dispatch, more effective integration of renewables and improved situational awareness. Benefits are expected to increase further with renewable resource expansion and as more entities join the EIM, bringing incremental resource diversity.


Transmission and Distribution

PacifiCorp will continueoperates one balancing authority area in the western portion of its service territory ("PacifiCorp-West") and one balancing authority area in the eastern portion of its service territory ("PacifiCorp-East"). A balancing authority area is a geographic area with transmission systems that control generation to monitor regional market expansion efforts, including creationmaintain schedules with other balancing authority areas and ensure reliable operations. In operating the balancing authority areas, PacifiCorp is responsible for continuously balancing electricity supply and demand by dispatching generating resources and interchange transactions so that generation internal to the balancing authority area, plus net imported power, matches customer loads. Deliveries of energy over PacifiCorp's transmission system are managed and scheduled in accordance with FERC requirements.

PacifiCorp's transmission system is part of the Western Interconnection, which includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. PacifiCorp's transmission system, together with contractual rights on other transmission systems, enables PacifiCorp to integrate and access generation resources to meet its customer load requirements. PacifiCorp's transmission and distribution systems included approximately 16,900 miles of transmission lines in ten states, 63,800 miles of distribution lines and 900 substations as of December 31, 2020.

8


PacifiCorp's transmission and distribution system is managed on a regional Independent System Operator ("ISO"). California Senate Bill No. 350,coordinated basis to obtain maximum load-carrying capability and efficiency. Portions of PacifiCorp's transmission and distribution systems are located:

On property owned or used through agreements by PacifiCorp;
Under or over streets, alleys, highways and other public places, the public domain and national forests and state and federal lands under franchises, easements or other rights that are generally subject to termination;
Under or over private property as a result of easements obtained primarily from the title holder of record; or
Under or over Native American reservations through agreements with the United States Secretary of Interior or Native American tribes.
It is possible that some of the easements and the property over which was passed in October 2015, authorized the California legislatureeasements were granted may have title defects or may be subject to consider making changes to current laws that would create an independent governance structure for a regional ISO duringmortgages or liens existing at the 2017 legislative session. The California legislature did not pass any legislation related to a regional ISO during its 2017 legislative session, which closed September 15, 2017.time the easements were acquired.


PacifiCorp's Energy Gateway Transmission Expansion Program represents plans to build approximately 2,000 miles of new high-voltage transmission lines, with an estimated cost exceedingof $6 billion, primarily in Wyoming, Utah, Idaho and Oregon. The $6 billion estimated cost includes: (a) the 135-mile, 345-kV Populus to Terminal transmission line between the Terminal substation near the Salt Lake City Airport and the Populus substation in Downey, Idaho, placed in-service in 2010; (b) the 100-mile, 345/500-kV Mona to Oquirrh transmission line between the Mona substation in central Utah and the Oquirrh substation in the Salt Lake Valley, placed in-service in 2013; (c) the 170-mile, 345-kV transmission line between the Sigurd Substationsubstation in central Utah and the Red Butte Substationsubstation in southwest Utah, placed in-service in May 2015; (d) the 140-mile, 500-kV transmission line between Aeolus substation near Medicine Bow in Wyoming and (d)Jim Bridger generating facility, placed in-service in 2020; (e) the 400-mile, 500kV high-voltage transmission line between the Aeolus substation and the Clover substation near Mona, Utah; (f) the 290-mile, 500kV high-voltage transmission line from Longhorn Substation near Boardman, Oregon, to the existing Hemingway Substation southwest of Boise, Idaho (a joint project with Idaho Power and the Bonneville Power Administration); and (g) other segments that are expected to be placed in-service in future years, depending on load growth, siting, permitting and construction schedules. The transmission line segments are intended to: (a) address customer load growth; (b) improve system reliability; (c) reduce transmission system constraints; (d) provide access to diverse generation resources, including renewable resources; and (e) improve the flow of electricity throughout PacifiCorp's six-state service area. Proposed transmission line segments are evaluated to ensure optimal benefits and timing before committing to move forward with permitting and construction. Through December 31, 2017, $1.92020, $2.7 billion had been spent and $1.6$2.3 billion, including AFUDC, had been placed in-service.


Future Generation, Conservation and Energy Efficiency


Integrated Resource PlanEnergy Supply Planning


As required by certain state regulations, PacifiCorp uses an IRP to develop a long-term resource plan to ensure that PacifiCorp can continue to provide reliable and cost-effective electric service to its customers while maintaining compliance with existing and evolving environmental laws and regulations. The IRP process identifies the amount and timing of PacifiCorp's expected future resource needs, accounting for planning uncertainty, risks, reliability, state energy policies and other factors. The IRP is prepared following a public process, which provides an opportunity for stakeholders to participate in PacifiCorp's resource planning process. PacifiCorp files its IRP on a biennialan every-two-year basis with the state commissions in each of the six states where PacifiCorp operates. Five states indicate whether the IRP meets the state commission's IRP standards and guidelines, a process referred to as "acknowledgment" in some states.


In April 2017,October 2019, PacifiCorp filed its 20172019 IRP with its state commissions. In November 2019, the WUTC temporarily suspended its practice of acknowledging utility IRPs, including PacifiCorp's 2019 IRP, due to ongoing implementation activities associated with Washington state's Senate Bill 5116, the Clean Energy Transformation Act. In May 2020, the OPUC acknowledged the 2019 IRP with conditions. The UPSC also acknowledged the 2019 IRP in May 2020. In September 2020, the IPUC acknowledged the 2019 IRP. In October 2020, the WPSC concluded its docket investigating the 2019 IRP. A written decision was issued in January 2021 requiring PacifiCorp to incorporate additional analyses for the 2021 IRP and periodically file reports related to the action plan and other items.

9


The 2019 IRP includes new transmission investments that will facilitate growth in new renewable energy resources, upgrades to the existing wind fleet,new storage resources, and expansion in new energy efficiency measures and demand-response programs. The IRP also includes accelerated coal-fueled generation facility retirements and the need for incremental flexible capacity resources beginning in 2021. Delivery of new transmission infrastructure that will facilitate approximately 4,400 MWs of new renewable energy resources, incremental to meetnew renewable capacity that was expected to come online by the end of 2020 and 2021, and the addition of approximately 600 MWs of new storage capacity is planned through 2023. The 2019 IRP outlines PacifiCorp's plan to procure these near-term generating facilities through a Request for Proposals ("RFP") process that will determine how many of the new resources identified in the 2019 IRP will be developed as owned assets or power purchase agreements. Over the next 20 years, the 2019 IRP calls for retiring approximately 4,500 MWs of coal-fueled generating capacity while adding approximately 8,900 MWs of new renewable resources, incremental to new renewable capacity of approximately 2,000 MWs that were expected to come online by the end of 2020 and 2021, and approximately 2,800 MWs of new storage capacity. All or some of the renewable energy attributes associated with generation from these renewable resources may be used in future customer needs. On December 11, 2017,years to comply with RPS or other regulatory requirements, sold to third parties in the OPUC acknowledged PacifiCorp's 2017 IRP.form of RECs or other environmental commodities, or excluded from energy purchased.



Requests for Proposals


PacifiCorp issues individual Request for Proposals ("RFP"),RFPs, each of which typically focuses on a specific category of generation resources consistent with the IRP or other customer-driven demands. The IRP and the RFPs provide for the identification and staged procurement of resources to meet load or renewable portfolio standardRPS requirements. Depending upon the specific RFP, applicable laws and regulations may require PacifiCorp to file draft RFPs with the UPSC, the OPUC and the WUTC. Approval by the UPSC, the OPUC or the WUTC may be required depending on the nature of the RFPs.


As required by applicable laws and regulations, PacifiCorpA draft of PacifiCorp's 2020 All Source RFP ("2020AS RFP") was filed its draft 2017R RFPfor approval with the UPSC in June 2017 and with the OPUC in August 2017. TheApril 2020. In July 2020, the UPSC and the OPUC approved PacifiCorp's 2017Rthe 2020AS RFP, in September 2017. The 2017R RFP was subsequently released toand PacifiCorp issued the market on September 27, 2017. The 2017R RFP sought up to 1,270 MW of new wind resources that can interconnect to PacifiCorp's transmission system in Wyoming once a proposed high-voltage transmission line is constructed. The 2017R RFP sought proposals for wind resources located outside of Wyoming capable of delivering all-in economic benefits for PacifiCorp's customers. The proposed high-voltage transmission line and new wind resources must be placed in service by December 31, 2020, to maximize potential federal production tax credit benefits for PacifiCorp's customers. Bids were received in October 2017 and best-and-final pricing, reflecting changes in federal tax law, was received in December 2017. PacifiCorp finalized its bid-selection process and established a final shortlist in February 2018. PacifiCorp has identified four winning wind resource bids from this solicitation totaling 1,311 MWs, consisting of 1,111 MWs owned and 200 MW as a power-purchase agreement.

PacifiCorp released the 2017S2020AS RFP to the market on November 15, 2017.market. The 2017S2020AS RFP is seekingsought bids for new solar resources that can deliver energy and capacitycapable of coming online by the end of 2024 up to the level of resources identified in PacifiCorp's transmission system that provide net benefits for customers. The 2017S RFP is open to bidders offering power purchase agreements for new solar facilities sized between 10 and 300 MW.2019 IRP. Bids were duesubmitted in December 2017,August 2020, and best-and-final pricingan initial shortlist was receivedidentified in February 2018. PacifiCorp is currently finalizing its bid-selection processOctober 2020. The initial shortlist includes a total of 6,982 MWs of new generation and is on track to establish astorage capacity. Of the total, 5,652 MWs are new generation resources (represented by 3,173 MWs of solar generation and 2,479 MWs of wind generation) and an additional 1,330 MWs of new battery storage assets, which includes 1,130 MWs of solar collocated battery storage and 200 MWs of stand-alone battery storage. The final shortlist in March 2018.of winning bids will be identified by June 2021.


Utah Subscriber Solar ProgramEnergy Efficiency Programs

In October 2015, the UPSC approved the Utah Subscriber Solar Program that allows Utah customers to meet a portion or all of their energy requirements from Utah-based solar photovoltaic resources. The program is an alternative for customers who are unable or do not want to install solar on their property. Residential and small commercial participants are able to subscribe in 200 kilowatt-hour blocks up to their total annual average usage. Large commercial and industrial participants are able to subscribe in 1 kilowatt blocks up to their total annual average usage. As part of the program, PacifiCorp issued a 2015 Solar RFP to seek solar photovoltaic resources up to 20 MW sited in Utah. The contract for the solar resource was executed in January 2016 and the project was operational in December 2016. During the first six months of production, the program maintained a subscription effective rate above 94%, and has been 100% sold out since August 2017. A waitlist of customers has started to build and PacifiCorp is working on a potential second RFP to expand the program offering. The program received a Green Power Leadership Award in October 2017, from the Center for Resource Solutions, which was presented at the Renewable Energy Markets conference in New York City.

Demand-side Management


PacifiCorp has provided a comprehensive set of DSM programs to its customers since the 1970s. The programs are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. PacifiCorp offers services to customers such as energy engineering audits and information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, PacifiCorp offers rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for energy project management, efficient building operations and efficient construction. Incentives are also paid to solicit participation in load management programs by residential, business and agricultural customers through programs such as PacifiCorp's residential and small commercial air conditioner load control program and irrigation equipment load control programs. Although subject to prudence reviews, state regulations allow for contemporaneous recovery of costs incurred for the DSM programs through state-specific energy efficiency surcharges to retail customers or for recovery of costs through rates. During 2017,2020, PacifiCorp spent $139$159 million on these DSM programs, resulting in an estimated 669,876 MWh574,114 MWhs of first-year energy savings and an estimated 301 MW270 MWs of peak load management. In 2017, PacifiCorp began amortizing Utah DSM program costs over a 10-year period as a result of the approved Senate Bill 115, "Sustainable Transportation and Energy Plan Act." In addition to these DSM programs, PacifiCorp has load curtailment contracts with a number of large industrial customers that deliver up to 305 MWMWs of load reduction when needed, depending on the customers' actual loads. Recovery of the costs associated with the large industrial load management program are captured in the retail special contract agreements with those customers approved by their respective state commissions or through PacifiCorp's general rate case process.


10


Human Capital

Employees


As of December 31, 2017,2020, PacifiCorp had approximately 5,5005,200 employees, of which approximately 3,2002,900 were covered by union contracts, principally with the International Brotherhood of Electrical Workers, the Utility Workers Union of America and the International Brotherhood of Boilermakers. For more information regarding PacifiCorp's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.


MIDAMERICAN FUNDING AND MIDAMERICAN ENERGY


General

MidAmerican Funding is an Iowa limited liability company whose sole member is BHE. and MHC

MidAmerican Funding, a wholly owned subsidiary of BHE, is a holding company headquartered in Iowa that owns all of the outstanding common stock of MHC Inc. ("MHC"), which is a holding company owning all of the common stock of MidAmerican Energy;Energy and Midwest Capital Group, Inc. ("Midwest Capital"); and MEC Construction Services Co. ("MEC Construction"). MidAmerican Energy is a public utility company headquartered in Des Moines, Iowa, and incorporated in the state of Iowa. MidAmerican Funding and MidAmerican Energy are indirect consolidated subsidiaries of Berkshire Hathaway.

MidAmerican Funding and MHC

MidAmerican Funding conducts no business other than activities related to its debt securities and the ownership of MHC. MHC conducts no business other than the ownership of its subsidiaries and related corporate services.subsidiaries. MidAmerican Energy accounts for the predominant partis a substantial portion of MidAmerican Funding's and MHC's assets, revenue and earnings. Financial information on

MidAmerican Funding's segments of business is in Note 20Funding was formed as a limited liability company under the laws of the Notes to Consolidated Financial Statementsstate of MidAmerican FundingIowa in Item 8 of this Form 10-K.

MidAmerican Funding's1999 and its principal executive offices are located at 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580 and its telephone number is (515) 242-4300. MidAmerican Funding was formed as a limited liability company in 1999 under the laws of the state of Iowa.


MidAmerican Energy

General


MidAmerican Energy, an indirect wholly owned subsidiary of BHE, is a United States regulated electric and natural gas utility company headquartered in Iowa that serves 0.8 million retail electric customers in portions of Iowa, Illinois and South Dakota and 0.8 million retail and transportation natural gas customers in portions of Iowa, South Dakota, Illinois and Nebraska. MidAmerican Energy is principally engaged in the business of generating, transmitting, distributing and selling electricity and in distributing, selling and transporting natural gas. MidAmerican Energy's service territory covers approximately 11,000 square miles. Metropolitan areas in which MidAmerican Energy distributes electricity at retail include Council Bluffs, Des Moines, Fort Dodge, Iowa City, Sioux City and Waterloo, Iowa; and the Quad Cities (Davenport and Bettendorf, Iowa and Rock Island, Moline and East Moline, Illinois). Metropolitan areas in which it distributes natural gas at retail include Cedar Rapids, Des Moines, Fort Dodge, Iowa City, Sioux City and Waterloo, Iowa; the Quad Cities; and Sioux Falls, South Dakota. MidAmerican Energy has a diverse customer base consisting of urban and rural residential customers and a variety of commercial and industrial customers. Principal industries served by MidAmerican Energy include electronic data storage; processing and sales of food products; manufacturing, processing and fabrication of primary metals, farm and other non-electrical machinery; cement and gypsum products; and government. In addition to retail sales and natural gas transportation, MidAmerican Energy sells electricity principally to markets operated by RTOs and natural gas to other utilities and market participants on a wholesale basis. MidAmerican Energy is a transmission-owning member of the MISO and participates in its capacity, energy and ancillary services markets.


MidAmerican Energy's regulated electric and natural gas operations are conducted under numerous franchise agreements, certificates, permits and licenses obtained from federal, state and local authorities. The franchise agreements, with various expiration dates, are typically for 20- to 25-year terms. Several of these franchise agreements give either party the right to seek amendment to the franchise agreement at one or two specified times during the term. MidAmerican Energy generally has an exclusive right to serve electric customers within its service territories and, in turn, has an obligation to provide electricity service to those customers. In return, the state utility commissions have established rates on a cost-of-service basis, which are designed to allow MidAmerican Energy an opportunity to recover its costs of providing services and to earn a reasonable return on its investment. In Illinois, MidAmerican Energy's regulated retail electric customers may choose their energy supplier.


Prior to 2016, MidAmerican Energy also had nonregulated business activities consisting predominantly of competitive electricity and natural gas retail sales. On January 1, 2016, MidAmerican Energy transferred the assets and liabilities of its unregulated retail services business to MidAmerican Energy Services, LLC, a subsidiary of BHE.

11

MidAmerican Energy's monthly net income is affected by the seasonal impact of weather on electricity and natural gas sales, seasonal retail electricity prices and the timing of recognition of federal renewable electricity production tax credits related to MidAmerican Energy's wind-powered generating facilities. For 2017, 82% of MidAmerican Energy's annual net income was recorded in the months of June through September.


Financial information on MidAmerican Energy's segments of business is disclosed in MidAmerican Energy's Note 20 of Notes to Financial Statements in Item 8 of this Form 10-K.

The percentages of MidAmerican Energy's operating revenue and operating income derived from the following business activities for the years ended December 31 were as follows:
202020192018
Operating revenue:
Regulated electric79 %76 %75 %
Regulated gas21 23 25 
Other— — 
100 %100 %100 %
Operating income:
Regulated electric86 %86 %85 %
Regulated gas14 13 15 
Other— — 
100 %100 %100 %
 2017 2016 2015
Operating revenue:     
Regulated electric75% 76% 74%
Regulated gas25
 24
 26
 100% 100% 100%
      
Operating income:     
Regulated electric86% 88% 86%
Regulated gas14
 12
 14
 100% 100% 100%


MidAmerican Energy'sEnergy was incorporated under the laws of the state of Iowa in 1995 and its principal executive offices are located at 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580, and its telephone number is (515) 242-4300. MidAmerican Energy was incorporated under the laws of the state of Iowa as part of the July 1, 1995 merger of Iowa-Illinois Gas242-4300 and Electric Company, Midwest Resources Inc. and Midwest Power Systems Inc. On December 1, 1996, MidAmerican Energy became, through a corporate reorganization, a wholly owned subsidiary of MHC Inc., formerly known as MidAmerican Energy Holdings Company.its internet address is www.midamericanenergy.com.


Regulated Electric Operations


Customers


The GWhGWhs and percentages of electricity sold to MidAmerican Energy's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Iowa24,425 92 %24,073 92 %23,670 92 %
Illinois1,847 1,894 1,944 
South Dakota251 234 237 
26,523 100 %26,201 100 %25,851 100 %


12

 2017 2016 2015
            
Iowa22,365
 91% 21,766
 91% 20,922
 90%
Illinois1,891
 8
 1,940
 8
 1,903
 9
South Dakota236
 1
 218
 1
 217
 1
 24,492
 100% 23,924
 100% 23,042
 100%



Electricity sold to MidAmerican Energy's retail and wholesale customers by class of customer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
GWhs sold:
Residential6,687 18 %6,575 18 %6,763 18 %
Commercial3,707 10 3,921 11 3,897 11 
Industrial14,645 39 14,127 39 13,587 37 
Other1,484 1,578 1,604 
Total retail26,523 71 26,201 72 25,851 70 
Wholesale11,219 29 10,000 28 11,181 30 
Total GWhs sold37,742 100 %36,201 100 %37,032 100 %
Average number of retail customers (in thousands):
Residential682 86 %675 86 %670 86 %
Commercial97 12 95 12 94 12 
Industrial— — — 
Other14 14 14 
Total795 100 %786 100 %780 100 %
 2017 2016 2015
GWh sold:           
Residential6,207
 18% 6,408
 20% 6,166
 19%
Commercial3,761
 11
 3,812
 12
 3,806
 12
Industrial12,957
 39
 12,115
 37
 11,487
 36
Other1,567
 5
 1,589
 5
 1,583
 5
Total retail24,492
 73
 23,924
 74
 23,042
 72
Wholesale9,165
 27
 8,489
 26
 8,741
 28
Total GWh sold33,657
 100% 32,413
 100% 31,783
 100%
            
Average number of retail customers (in thousands):           
Residential662
 86% 653
 86% 646
 86%
Commercial92
 12
 91
 12
 90
 12
Industrial2
 
 2
 
 2
 
Other14
 2
 14
 2
 14
 2
Total770
 100% 760
 100% 752
 100%


Variations in weather, economic conditions and various conservation and energy efficiency measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.


There are seasonal variations in MidAmerican Energy's electricity sales that are principally related to weather and the related use of electricity for air conditioning. Additionally, electricity sales are priced higher in the summer months compared to the remaining months of the year. As a result, 40% to 50% of MidAmerican Energy's regulated electric retail revenue is reported in the months of June, July, August and September.


A degree of concentration of sales exists with certain large electric retail customers. Sales to the ten largest customers, from a variety of industries, comprised 19%23%, 16%21% and 15%20% of total retail electric sales in 2017, 20162020, 2019 and 2015,2018, respectively. Sales to electronic data storage customers included in the ten largest customers comprised 9%16%, 7%12% and 5%9% of total retail electric sales in 2017, 20162020, 2019 and 2015,2018, respectively.


The annual hourly peak demand on MidAmerican Energy's electric system usually occurs as a result of air conditioning use during the cooling season. Peak demand represents the highest demand on a given day and at a given hour. On July 19, 2017,8, 2020, retail customer usage of electricity caused a new recordan hourly peak demand of 4,850 MW5,035 MWs on MidAmerican Energy's electric distribution system, which is 98 MW greater60 MWs less than the previous record hourly peak demand of 4,752 MW5,095 MWs set July 19, 2011.2019.



13


Generating Facilities and Fuel Supply


MidAmerican Energy has ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding MidAmerican Energy's owned generating facilities as of December 31, 2017:2020:
FacilityNet
Year Installed /Net CapacityOwned Capacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
WIND:
Ida GroveIda Grove, IAWind2016-2019500 500 
OrientGreenfield, IAWind2018-2019500 500 
HighlandPrimghar, IAWind2015475 475 
Rolling HillsMassena, IAWind2011443 443 
Beaver CreekOgden, IAWind2017-2018340 340 
North EnglishMontezuma, IAWind2018-2019340 340 
Palo AltoPalo Alto, IAWind2019-2020340 340 
Arbor HillGreenfield, IAWind2018-2020310 310 
PomeroyPomeroy, IAWind2007-2011 / 2018-2019286 286 
Diamond TrailLadora, IAWind2020250 250 
LundgrenOtho, IAWind2014250 250 
O'BrienPrimghar, IAWind2016250 250 
CenturyBlairsburg, IAWind2005-2008 / 2017-2018200 200 
EclipseAdair, IAWind2012200 200 
IntrepidSchaller, IAWind2004-2005 / 2017176 176 
AdairAdair, IAWind2008 / 2019-2020175 175 
PrairieMontezuma, IAWind2017-2018169 169 
Southern HillsOrient, IAWind2020163 163 
CarrollCarroll, IAWind2008 / 2019150 150 
WalnutWalnut, IAWind2008 / 2019150 150 
ViennaGladbrook, IAWind2012-2013150 150 
AdamsLennox, IAWind2015150 150 
WellsburgWellsburg, IAWind2014139 139 
LaurelLaurel, IAWind2011120 120 
MacksburgMacksburg, IAWind2014119 119 
ContrailBraddyville, IAWind2020110 110 
Morning LightAdair, IAWind2012100 100 
VictoryWestside, IAWind2006 / 2017-201899 99 
IvesterWellsburg, IAWind201890 90 
Pocahontas Prairie(3)
Pomeroy, IAWind202080 80 
Charles CityCharles City, IAWind2008 / 201875 75 
6,899 6,899 
COAL:
LouisaMuscatine, IACoal1983744 655 
Walter Scott, Jr. Unit No. 3Council Bluffs, IACoal1978702 556 
Walter Scott, Jr. Unit No. 4Council Bluffs, IACoal2007819 489 
OttumwaOttumwa, IACoal1981720 374 
George Neal Unit No. 3Sergeant Bluff, IACoal1975506 364 
George Neal Unit No. 4Salix, IACoal1979653 265 
4,144 2,703 
NATURAL GAS AND OTHER:
Greater Des MoinesPleasant Hill, IAGas2003-2004485 485 
ElectrifarmWaterloo, IAGas or Oil1975-1978187 187 
Pleasant HillPleasant Hill, IAGas or Oil1990-1994156 156 
SycamoreJohnston, IAGas or Oil1974147 147 
River HillsDes Moines, IAGas1966-1967118 118 
Riverside Unit No. 5(4)
Bettendorf, IAGas1961117 117 
CoralvilleCoralville, IAGas197066 66 
MolineMoline, ILGas197064 64 
28 portable power modulesVariousOil200056 56 
ParrCharles City, IAGas196933 33 
14


      Year Facility Net Net Owned
Generating Facility Location Energy Source Installed 
Capacity (MW)(1)
 
Capacity (MW)(1)
WIND:          
Intrepid Schaller, IA Wind 2004-2005 176
 176
Century Blairsburg, IA Wind 2005-2008 200
 200
Victory Westside, IA Wind 2006 99
 99
Pomeroy Pomeroy, IA Wind 2007-2011 286
 286
Adair Adair, IA Wind 2008 175
 175
Carroll Carroll, IA Wind 2008 150
 150
Charles City Charles City, IA Wind 2008 75
 75
Walnut Walnut, IA Wind 2008 150
 150
Laurel Laurel, IA Wind 2011 120
 120
Rolling Hills Massena, IA Wind 2011 443
 443
Eclipse Adair, IA Wind 2012 200
 200
Morning Light Adair, IA Wind 2012 100
 100
Vienna Gladbrook, IA Wind 2012-2013 150
 150
Lundgren Otho, IA Wind 2014 250
 250
Macksburg Macksburg, IA Wind 2014 119
 119
Wellsburg Wellsburg, IA Wind 2014 139
 139
Adams Lennox, IA Wind 2015 150
 150
Highland Primghar, IA Wind 2015 475
 475
Ida Grove Ida Grove, IA Wind 2016 300
 300
O'Brien Primghar, IA Wind 2016 250
 250
Beaver Creek Ogden, IA Wind 2017 170
 170
Prairie Montezuma, IA Wind 2017 164
 164
        4,341
 4,341
COAL:          
Louisa Muscatine, IA Coal 1983 744
 655
Walter Scott, Jr. Unit No. 3 Council Bluffs, IA Coal 1978 712
 563
Walter Scott, Jr. Unit No. 4 Council Bluffs, IA Coal 2007 810
 483
Ottumwa Ottumwa, IA Coal 1981 730
 380
George Neal Unit No. 3 Sergeant Bluff, IA Coal 1975 512
 368
George Neal Unit No. 4 Salix, IA Coal 1979 663
 269
        4,171
 2,718
NATURAL GAS AND OTHER:          
Greater Des Moines Pleasant Hill, IA Gas 2003-2004 488
 488
Electrifarm Waterloo, IA Gas or Oil 1975-1978 182
 182
Pleasant Hill Pleasant Hill, IA Gas or Oil 1990-1994 167
 167
Sycamore Johnston, IA Gas or Oil 1974 148
 148
River Hills Des Moines, IA Gas 1966-1967 113
 113
Riverside Unit No. 5 Bettendorf, IA Gas 1961 113
 113
Coralville Coralville, IA Gas 1970 63
 63
Moline Moline, IL Gas 1970 61
 61
28 portable power modules Various Oil 2000 56
 56
Parr Charles City, IA Gas 1969 33
 33
        1,424
 1,424
NUCLEAR:          
Quad Cities Unit Nos. 1 and 2 Cordova, IL Uranium 1972 1,820
 455
           
HYDROELECTRIC:          
Moline Unit Nos. 1-4 Moline, IL Hydroelectric 1941 4
 4
           
Total Available Generating Capacity     11,760
 8,942
           
PROJECTS UNDER CONSTRUCTION        
Various wind projects       1,666
 1,666
    13,426
 10,608
FacilityNet
Year Installed /Net CapacityOwned Capacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
1,429 1,429 
NUCLEAR:
Quad Cities Unit Nos. 1 and 2Cordova, ILUranium19721,815 454 
HYDROELECTRIC:
Moline Unit Nos. 1-4Moline, ILHydroelectric1941
Total Available Generating Capacity14,291 11,489 
PROJECTS UNDER CONSTRUCTION:
Various wind projects87 87 
14,378 11,576 

(1)Repowered dates are associated with component replacements on existing wind-powered generating facilities commonly referred to by the Internal Revenue Service ("IRS") as repowering. IRS rules provide for re-establishment of the PTCs for an existing wind-powered generating facility upon the replacement of a significant portion of its components. If the degree of component replacement in such projects meets IRS guidelines, PTCs are re-established for ten years at rates that depend upon the date on which construction begins.

(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates MidAmerican Energy's ownership of Facility Net Capacity.
(1)
(3)The Pocahontas Prairie was acquired in 2020 and is currently not eligible to earn federal renewable electricity PTCs.
(4)Riverside Unit No. 5 was retired in January 2021.

Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MW) under specified conditions. Net Owned Capacity indicates MidAmerican Energy's ownership of Facility Net Capacity.
The following table shows the percentages of MidAmerican Energy's total energy supplied by energy source for the years ended December 31:
202020192018
Wind and other renewable(1)
54 %44 %36 %
Coal19 33 42 
Nuclear10 10 10 
Natural gas
Total energy generated85 88 90 
Energy purchased - short-term contracts and other14 10 
Energy purchased - long-term contracts (renewable)(1)
Energy purchased - long-term contracts (non-renewable)— 
100 %100 %100 %
 2017 2016 2015
      
Coal40% 39% 48%
Nuclear11
 12
 12
Natural gas1
 2
 1
Wind and other(1)
38
 35
 29
Total energy generated90
 88
 90
Energy purchased - short-term contracts and other8
 10
 8
Energy purchased - long-term contracts (renewable)(1)
1
 1
 1
Energy purchased - long-term contracts (non-renewable)1
 1
 1
 100% 100% 100%


(1)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.
(1)
All or some of the renewable energy attributes associated with generation from these generating facilities and purchases may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of renewable energy credits or other environmental commodities, or (c) excluded from energy purchased.


MidAmerican Energy is required to have resources available for dispatch by MISO to continuously meet its customer needs and reliably operate its electric system. The percentage of MidAmerican Energy's energy supplied by energy source varies from year to year and is subject to numerous operational and economic factors such as planned and unplanned outages, fuel commodity prices, fuel transportation costs, weather, environmental considerations, transmission constraints, and wholesale market prices of electricity. MidAmerican Energy evaluates these factors continuously in order to facilitate economical dispatch of its generating facilities.facilities by MISO. When factors for one energy source are less favorable, MidAmerican Energy places more reliance on other energy sources. For example, MidAmerican Energy can generate more electricity using its low cost wind-powered generating facilities when factors associated with these facilities are favorable. When factors associated with wind resources are less favorable, MidAmerican Energy must increase its reliance on more expensive generation or purchased electricity. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction.


Coal

15


Wind

MidAmerican Energy owns more wind-powered generating capacity than any other United States rate-regulated electric utility and believes wind-powered generation offers a viable, economical and environmentally prudent means of supplying electricity and complying with laws and regulations. Pursuant to ratemaking principles approved by the IUB, facilities accounting for 96% of MidAmerican Energy's wind-powered generating capacity in-service at December 31, 2020, are authorized to earn over their regulatory lives a fixed rate of return on equity ranging from 11.0% to 12.2% on the depreciated cost of their original construction, which excludes the cost of later replacements, in any future Iowa rate proceeding. MidAmerican Energy's wind-powered generating facilities, including those facilities where a significant portion of the equipment was replaced, commonly referred to as repowered facilities, are eligible for federal renewable electricity PTCs for 10 years from the date the facilities are placed in-service. PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold. PTCs for MidAmerican Energy's wind-powered generating facilities currently in-service began expiring in 2014, with final expiration in 2030. Since 2014, MidAmerican Energy has repowered, or plans to repower, 2,310 MWs of wind-powered generating facilities for which PTCs have expired or will expire by the end of 2022. MidAmerican Energy anticipates energy generation from the repowered facilities will increase between 19% and 30% depending upon the technology being repowered.

Of the 6,998 MWs of wind-powered generating facilities in-service as of December 31, 2020, 6,866 MWs were generating PTCs, including 1,275 MWs of repowered facilities. PTCs earned by MidAmerican Energy's wind-powered generating facilities placed in-service prior to 2013, except for repowered facilities, are included in MidAmerican Energy's Iowa energy adjustment clause, through which MidAmerican Energy is allowed to recover fluctuations in its electric retail energy costs. Facilities earning PTCs that currently benefit customers through the Iowa energy adjustment clause totaled 1,000 MWs (nominal ratings) as of December 31, 2020, with the eligibility of those facilities to earn PTCs expiring by the end of 2022. MidAmerican Energy earned PTCs totaling $510 million and $378 million in 2020 and 2019, respectively, of which 15% and 19%, respectively, were included in the Iowa energy adjustment clause.

Coal

All of the coal-fueled generating facilities operated by MidAmerican Energy are fueled by low-sulfur, western coal from the Powder River Basin in northeast Wyoming. MidAmerican Energy's coal supply portfolio includes multiple suppliers and mines under short-term and multi-year agreements of varying terms and quantities through 2019.2023. MidAmerican Energy believes supplies from these sources are presently adequate and available to meet MidAmerican Energy's needs. MidAmerican Energy's coal supply portfolio has substantially all of its expected 20182021 requirements under fixed-price contracts. MidAmerican Energy regularly monitors the western coal market for opportunities to enhance its coal supply portfolio.


MidAmerican Energy has a multi-year long-haul coal transportation agreement with BNSF Railway Company ("BNSF"), an affiliate company, for the delivery of coal to all of the MidAmerican Energy-operated coal-fueled generating facilities other than the George Neal Energy Center. Under this agreement, BNSF delivers coal directly to MidAmerican Energy's Walter Scott, Jr. Energy Center and to an interchange point with Canadian Pacific Railway Company for short-haul delivery to the Louisa Energy Center. MidAmerican Energy has a multi-year long-haul coal transportation agreement with Union Pacific Railroad Company for the delivery of coal to the George Neal Energy Center.



Nuclear
Nuclear


MidAmerican Energy is a 25% joint owner of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station"), a nuclear power plant.plant, which is currently licensed by the NRC for operation until December 14, 2032. Exelon Generation Company, LLC ("Exelon Generation"), a subsidiary of Exelon Corporation, is the 75% joint owner and the operator of Quad Cities Station. Approximately one-third of the nuclear fuel assemblies in each reactor core at Quad Cities Station is replaced every 24 months. MidAmerican Energy has been advised by Exelon Generation that the following requirements for Quad Cities Station can be met under existing supplies or commitments: uranium requirements through 20212025 and partial requirements through 2025;2030; uranium conversion requirements through 20212028 and partial requirements through 2025;2031; enrichment requirements through 20212027 and partial requirements through 2025;2031; and fuel fabrication requirements through 2022.2028. MidAmerican Energy has been advised by Exelon Generation that it does not anticipate it will have difficulty in contracting for uranium, uranium conversion, enrichment or fabrication of nuclear fuel needed to operate Quad Cities Station during these time periods. In reaction to concerns about the profitability of Quad Cities Station and Exelon Generation's ability to continue its operation, in December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Agency to purchase ZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the ZECs will provide Exelon Generation additional revenue through 2027 as an incentive for continued operation of Quad Cities Station.


16


Natural Gas and Other


MidAmerican Energy uses natural gas and oil as fuel for intermediate and peak demand electric generation, igniter fuel, transmission support and standby purposes. These sources are presently in adequate supply and available to meet MidAmerican Energy's needs.


Wind and Other        Regional Transmission Organizations

MidAmerican Energy owns more wind-powered generating capacity than any other United States rate-regulated electric utility and believes wind-powered generation offers a viable, economical and environmentally prudent means of supplying electricity and complying with laws and regulations. Pursuant to ratemaking principles approved by the IUB, all of MidAmerican Energy's wind-powered generating facilities in-service at December 31, 2017, are authorized to earn over their regulatory lives a fixed rate of return on equity ranging from 11.0% to 12.2% on the cost of their original construction, which excludes the cost of later replacements, in any future Iowa rate proceeding. MidAmerican Energy's wind-powered generating facilities, including those facilities where a significant portion of the equipment was replaced, commonly referred to as repowered facilities, are eligible for federal renewable electricity production tax credits for 10 years from the date the facilities are placed in-service. Production tax credits for MidAmerican Energy's wind-powered generating facilities currently in-service, began expiring in 2014, with final expiration in 2027. In 2017, certain of MidAmerican Energy's wind-powered generating facilities for which production tax credits had previously expired were repowered.

Of the 4,388 MW (nominal ratings) of wind-powered generating facilities in-service as of December 31, 2017, 3,642 MW were generating production tax credits. Production tax credits earned by MidAmerican Energy's wind-powered generating facilities placed in-service prior to 2013, except for facilities that have been repowered, are included in ECAMs, through which MidAmerican Energy is allowed to recover fluctuations in its electric retail energy costs. Facilities earning production tax credits that currently benefit customers through ECAMs totaled 1,624 MW (nominal ratings) as of December 31, 2017. In 2017, MidAmerican Energy earned $287 million of production tax credits, 47% of which was included in ECAMs.


MidAmerican Energy sells and purchases electricity and ancillary services related to its generation and load in wholesale markets pursuant to the tariffs in those markets. MidAmerican Energy participates predominantly in the MISO energy and ancillary service markets, which provide MidAmerican Energy with wholesale opportunities over a large market area. MidAmerican Energy can enter into wholesale bilateral transactions in addition to market activity related to its assets. MidAmerican Energy is authorized to participate in the Southwest Power Pool, Inc. and PJM Interconnection, L.L.C. ("PJM") markets and can contract with several other major transmission-owning utilities in the region. MidAmerican Energy can utilize both financial swaps and physical fixed-price electricity sales and purchases contracts to reduce its exposure to electricity price volatility.


MidAmerican Energy's total net generating capability accrediteddecisions regarding additions to or reductions of its generation portfolio may be impacted by the MISO's minimum reserve margin requirement. The MISO requires each member to maintain a minimum reserve margin of its accredited generating capacity over its peak demand obligation based on the member's load forecast filed with the MISO each year. The MISO's reserve requirement was 8.9% for the summer of 20172020 and will increase to 9.4% for the summer of 2021. MidAmerican Energy's owned and contracted capacity accredited for the 2020-2021 MISO capacity auction was 5,410 MW5,471 MWs compared to a 2017 summer peak demand obligation of 4,850 MW.4,830 MWs, or a reserve margin of 13.3%. Accredited net generating capabilitycapacity represents the amount of generation available to meet the requirements of MidAmerican Energy's retail customers and consists of MidAmerican Energy-owned generation, interruptible retail customer load, certain customer private generation that MidAmerican Energy is contractually allowed to dispatch and the net amount of capacity purchases and sales.sales, excluding sales into the MISO annual capacity auction. Accredited capacity may vary significantly from the nominal, or design, capacity ratings, particularly for wind turbines whose output is dependent upon wind levels at any given time. Additionally, the actual amount of generating capacity available at any time may be less than the accredited capacity due to regulatory restrictions, transmission constraints, fuel restrictions and generating units being temporarily out of service for inspection, maintenance, refueling, modifications or other reasons. MidAmerican Energy's accredited capability currently exceeds the MISO's minimum requirements.



Transmission and Distribution


MidAmerican Energy's transmission and distribution systems included 4,0004,600 circuit miles of transmission lines in four states, 37,50025,000 circuit miles of distribution lines and 380340 substations as of December 31, 2017.2020. Electricity from MidAmerican Energy's generating facilities and purchased electricity is delivered to wholesale markets and its retail customers via the transmission facilities of MidAmerican Energy and others. MidAmerican Energy participates in the MISO capacity, energy and ancillary services markets as a transmission-owning member and, accordingly, operates its transmission assets at the direction of the MISO. The MISO manages its energy and ancillary service markets using reliability-constrained economic dispatch of the region's generation. For both the day-ahead and real-time (every five minutes) markets, the MISO analyzes generation commitments to provide market liquidity and transparent pricing while maintaining transmission system reliability by minimizing congestion and maximizing efficient energy transmission. Additionally, through its FERC-approved open access transmission tariff ("OATT"),OATT, the MISO performs the role of transmission service provider throughout the MISO footprint and administers the long-term planning function. MISO and related costs of the participants are shared among the participants through a number of mechanisms in accordance with the MISO tariff.


Regulated Natural Gas Operations


MidAmerican Energy is engaged in the procurement, transportation, storage and distribution of natural gas forto customers in its service territory.territory and the related procurement, transportation and storage of natural gas for the benefit of those customers. MidAmerican Energy purchases natural gas from various suppliers and contracts with interstate natural gas pipelines for transportation of the gas to MidAmerican Energy's service territory and for storage and balancing services. MidAmerican Energy sells natural gas and delivery services to end-use customers on its distribution system; sells natural gas to other utilities, municipalities and energy marketing companies; and transports natural gas through its distribution system for end-use customers who have independently secured their supply of natural gas. During 2017, 55%2020, 58% of the total natural gas delivered through MidAmerican Energy's distribution system was associated with transportation service.


17


Natural gas property consists primarily of natural gas mains and servicesservice lines, meters, and related distribution equipment, including feeder lines to communities served from natural gas pipelines owned by others. The natural gas distribution facilities of MidAmerican Energy included 23,50024,100 miles of natural gas main and service lines as of December 31, 2017.2020.


Customer Usage and Seasonality


The percentages of natural gas sold to MidAmerican Energy's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Iowa76 %76 %76 %
South Dakota13 13 13 
Illinois10 10 10 
Nebraska
100 %100 %100 %
 2017 2016 2015
      
Iowa76% 76% 76%
South Dakota13
 13
 13
Illinois10
 10
 10
Nebraska1
 1
 1
 100% 100% 100%



The percentages of natural gas sold to MidAmerican Energy's retail and wholesale customers by class of customer, total DthDths of natural gas sold, total DthDths of transportation service and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Residential45 %45 %43 %
Commercial(1)
20 22 21 
Industrial(1)
Total retail70 71 69 
Wholesale(2)
30 29 31 
100 %100 %100 %
Total Dths of natural gas sold (in thousands)114,399125,655126,272
Total Dths of transportation service (in thousands)110,263112,143102,198
Total average number of retail customers (in thousands)774766759
 2017 2016 2015
      
Residential41% 41% 42%
Commercial(1)
20
 21
 21
Industrial(1)
4
 4
 5
Total retail65
 66
 68
Wholesale(2)
35
 34
 32
 100% 100% 100%
      
Total Dth of natural gas sold (in thousands)114,298
 113,294
 110,105
Total Dth of transportation service (in thousands)92,136
 83,610
 80,001
Total average number of retail customers (in thousands)751
 742
 733


(1)Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers that use natural gas principally for heating. Industrial customers are non-residential customers that use natural gas principally for their manufacturing processes.
(1)
Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers that use natural gas principally for heating. Industrial customers are non-residential customers that use natural gas principally for their manufacturing processes.
(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

There are seasonal variations in MidAmerican Energy's regulated natural gas business that are principally due to the use of natural gas for heating. Typically, 50-60% of MidAmerican Energy's regulated retail natural gas revenue is reported in the months of January, February, March and December.


On January 6, 2014,29, 2019, MidAmerican Energy recorded its all-time highest peak-day delivery through its distribution system of 1,281,767 Dth.1,314,526 Dths. This peak-day delivery consisted of 69%68% traditional retail sales service and 31%32% transportation service. MidAmerican Energy's 2017/20182020/2021 winter heating season peak-day delivery as of February 2, 2018,23, 2021, was 1,244,354 Dth1,243,237 Dths, reached on January 15, 2018.February 14, 2021. This preliminary peak-day delivery included 66%consisted of 72% traditional retail sales service and 34%28% transportation service.


Fuel
18


Natural Gas Supply and Capacity


MidAmerican Energy uses several strategies designed to maintain a reliable natural gas supply and reduce the impact of volatility in natural gas prices on its regulated retail natural gas customers. These strategies include the purchase of a geographically diverse supply portfolio from producers and third partythird-party energy marketing companies, the use of leasedinterstate pipeline storage services and MidAmerican Energy's LNG peaking facilities, and the use of financial derivatives to fix the price on a portion of the anticipated natural gas requirements of MidAmerican Energy's customers. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of the purchased gas adjustment clauses ("PGA").PGAs.


MidAmerican Energy contracts for firm natural gas pipeline capacity to transport natural gas from key production areas and liquid market centers to its service territory through direct interconnects to the pipeline systems of several interstate natural gas pipeline systems, including Northern Natural Gas, an affiliate company. MidAmerican Energy has multiple pipeline interconnections into several larger markets within its distribution system. Multiple pipeline interconnections create competition among pipeline suppliers for transportation capacity to serve those markets, thus reducing costs. In addition, multiple pipeline interconnections increase delivery reliability and give MidAmerican Energy the ability to optimize delivery of the lowest cost supply from the various production areas and liquid market centers into these markets. Benefits to MidAmerican Energy's distribution system customers are shared among all jurisdictions through a consolidated PGA.


At times, the natural gas pipeline capacity available through MidAmerican Energy's firm capacity portfolio may exceed the requirements of retail customers on MidAmerican Energy's distribution system. Firm capacity in excess of MidAmerican Energy's system needs can be resoldreleased to other companies to achieve optimum use of the available capacity. Past IUB and South Dakota Public Utilities Commission ("SDPUC") rulings have allowed MidAmerican Energy to retain 30% of the respective jurisdictional revenue on the resold capacity, with the remaining 70% being returned to customers through the PGAs.



MidAmerican Energy utilizes interstate pipeline natural gas storage leased from the interstate pipelinesservices to meet retail customer requirements, manage fluctuations in demand due to changes in weather and other usage factors and manage variation in seasonal natural gas pricing. MidAmerican Energy typically withdraws natural gas from storage during the heating season when customer demand is historically at its peak and injects natural gas into storage during off-peak months when customer demand is historically lower. MidAmerican Energy also utilizes its three LNG facilities to meet peak day demands during the winter heating season. The leasedInterstate pipeline storage services and MidAmerican Energy's LNG facilities reduce MidAmerican Energy's dependence on natural gas purchases during the volatile winter heating season and can deliver a significant portion of MidAmerican Energy's anticipated retail sales requirements on a peak winter day. For MidAmerican Energy's 2017/20182020/2021 winter heating season preliminary peak-day of January 15, 2018,February 14, 2021, supply sources used to meet deliveries to traditional retail sales service customers included 53%51% from purchases delivered on interstate pipelines, 33% from interstate pipelines, 39% from leasedpipeline storage services and 8%16% from MidAmerican Energy's LNG facilities.


MidAmerican Energy attempts to optimize the value of its regulated transportation capacity, natural gas supply and leasedinterstate pipeline storage arrangementsservices by engaging in wholesale transactions. IUB and SDPUC rulings have allowed MidAmerican Energy to retain 50% of the respective jurisdictional margins earned on certain wholesale sales of natural gas, with the remaining 50% being returned to customers through the PGAs.


MidAmerican Energy is not aware of any factors that would cause material difficulties in meeting its anticipated retail customer demand under normal operating conditions for the foreseeable future.


Demand-side Management

19


Energy Efficiency Programs

MidAmerican Energy has provided a comprehensive set of DSMdemand- and energy-reduction programs to its Iowa electric and natural gas customers since 1990 and1990. The programs, collectively referred to customers in its other jurisdictions since 2008. Theas energy efficiency programs, are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. Current programs offer services to customers such as energy engineering audits and information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, MidAmerican Energy offers rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for efficient construction. Incentives are also paid to residential customers who participate in the air conditioner load control program and nonresidential customers who participate in the nonresidential load management program. In Iowa, legislation passed in 2018 provides that projected cumulative average annual costs for a natural gas energy efficiency plan cannot exceed 1.5% of expected Iowa natural gas retail revenue and, for an electric demand response plan and separately for an electric energy efficiency plan other than demand response, cannot exceed 2.0% of expected annual Iowa electric retail revenue. Although subject to prudence reviews, state regulations allow for contemporaneous recovery of costs incurred for the DSMenergy efficiency programs through state-specific energy efficiency service charges paid by all retail electric and natural gas customers. In 2017, $1472020, $40 million was expensed for MidAmerican Energy's DSMenergy efficiency programs, which resulted in estimated first-year energy savings of 311,000 MWh136,000 MWhs of electricity and 774,000 Dth189,000 Dths of natural gas and an estimated peak load reduction of 464 MW345 MWs of electricity and 9,244 Dth4,558 Dths per day of natural gas.


Human Capital

Employees


All of MidAmerican Funding's employees are employed by MidAmerican Energy. As of December 31, 2017, MidAmerican Funding and its subsidiaries, which includes2020, MidAmerican Energy had approximately 3,3003,400 employees, of which approximately 1,400 were covered by union contracts. MidAmerican Energy has three separate contracts with locals of the International Brotherhood of Electrical Workers ("IBEW") and the United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union. A contract with the IBEW covering substantially all of the union employees expires April 30, 2022. For more information regarding MidAmerican Funding's and MidAmerican Energy's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.




NV ENERGY (NEVADA POWER AND SIERRA PACIFIC)


General


NV Energy, an indirect wholly owned subsidiary of BHE, acquired on December 19, 2013, is an energy holding company headquartered in Nevada whose principal subsidiaries are Nevada Power and Sierra Pacific. Nevada Power and Sierra Pacific are indirect consolidated subsidiaries of Berkshire Hathaway. Nevada Power is a United States regulated electric utility company serving 0.91.0 million retail customers primarily in the Las Vegas, North Las Vegas, Henderson and adjoining areas. Sierra Pacific is a United States regulated electric and natural gas utility company serving 0.30.4 million retail electric customers and 0.2 million retail and transportation natural gas customers in northern Nevada. The Nevada Utilities are principally engaged in the business of generating, transmitting, distributing and selling electricity and, in the case of Sierra Pacific, in distributing, selling and transporting natural gas. Nevada Power and Sierra Pacific have electric service territories covering approximately 4,500 square miles and 41,200 square miles, respectively. Sierra Pacific has a natural gas service territory covering approximately 900 square miles in Reno and Sparks. Principal industries served by the Nevada Utilities include gaming, recreation, warehousing, manufacturing and governmental.governmental services. Sierra Pacific also serves the mining industry. The Nevada Utilities buy and sell electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants to balance and optimize economic benefits of electricity generation, retail customer loads and wholesale transactions.


The Nevada Utilities' electric and natural gas operations are conducted under numerous nonexclusive franchise agreements, revocable permits and licenses obtained from federal, state and local authorities. The expiration of these franchise agreements, ranges from 2020 through 2032with various expiration dates, are typically for Nevada Power and 2018 through 2049 for Sierra Pacific.20- to 25-year terms. The Nevada Utilities operate under certificates of public convenience and necessity as regulated by the PUCN, and as such the Nevada Utilities have an obligation to provide electricity service to those customers within their service territory. In return, the PUCN has established rates on a cost-of-service basis, which are designed to allow the Nevada Utilities an opportunity to recover all prudently incurred costs of providing services and an opportunity to earn a reasonable return on their investment.

20


NV Energy's monthly net income is affected by the seasonal impact of weather on electricity and natural gas sales and seasonal retail electricity prices from the Nevada Utilities'. For 2017, 82%2020, 76% of NV Energy annual net income was recorded in the months of June through September.


Regulated electric utility operationoperations is Nevada Power's only segment while regulated electric utility operations and regulated natural gas operations are the two segments of Sierra Pacific. Financial information on Sierra Pacific's segments of business is disclosed in Sierra Pacific's Note 15 of Notes to Financial Statements in Item 8 of this Form 10-K.


The percentages of Sierra Pacific's operating revenue and operating income derived from the following business activities for the years ended December 31 were as follows:
202020192018
Operating revenue:
Electric86 %87 %88 %
Gas14 13 12 
100 %100 %100 %
Operating income:
Electric89 %88 %89 %
Gas11 12 11 
100 %100 %100 %
 2017 2016 2015
      
Operating revenue:     
Electric88% 86% 86%
Gas12
 14
 14
 100% 100% 100%
      
Operating income:     
Electric89% 89% 91%
Gas11
 11
 9
 100% 100% 100%


Nevada Power'sPower was incorporated under the laws of the state of Nevada in 1929 and its principal executive offices are located at 6226 West Sahara Avenue, Las Vegas, Nevada 89146, and its telephone number is (702) 402-5000. Nevada Power402-5000 and its internet address is www.nvenergy.com.

Sierra Pacific was incorporated in 1929 under the laws of the state of Nevada.

Sierra Pacific'sNevada in 1912 and its principal executive offices are located at 6100 Neil Road, Reno, Nevada 89511, and its telephone number is (775) 834-4011. Sierra Pacific was incorporated in 1912 under the laws of the state of Nevada.834-4011 and its internet address is www.nvenergy.com.

21



Regulated Electric Operations


Customers


The Nevada Utilities' sell electricity to retail customers in a single state jurisdiction. Electricity sold to the Nevada Utilities' retail and wholesale customers by class of customer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Nevada Power:
GWhs sold:
Residential10,477 46 %9,311 41 %9,970 43 %
Commercial4,591 20 4,657 21 4,778 20 
Industrial4,881 21 5,344 24 5,534 24 
Other195 193 214 
Total fully bundled20,144 88 19,505 87 20,496 88 
Distribution only service2,425 11 2,613 12 2,521 11 
Total retail22,569 99 22,118 99 23,017 99 
Wholesale374 527 274 
Total GWhs sold22,943 100 %22,645 100 %23,291 100 %
Average number of retail customers (in thousands):
Residential856 88 %840 88 %825 88 %
Commercial110 12 109 12 108 12 
Industrial— — — 
Total968 100 %951 100 %935 100 %
Sierra Pacific:
GWhs sold:
Residential2,672 23 %2,491 22 %2,483 23 %
Commercial2,977 26 2,973 26 2,998 27 
Industrial3,544 31 3,716 32 3,387 31 
Other15 — 16 — 16 — 
Total fully bundled9,208 80 9,196 80 8,884 81 
Distribution only service1,670 15 1,629 14 1,516 14 
Total retail10,878 95 10,825 94 10,400 95 
Wholesale548 662 558 
Total GWhs sold11,426 100 %11,487 100 %10,958 100 %
Average number of retail customers (in thousands):
Residential310 86 %304 86 %300 86 %
Commercial49 14 48 14 47 14 
Total359 100 %352 100 %347 100 %
 2017 2016 2015
Nevada Power:           
GWh sold:           
Residential9,501
 42% 9,394
 42% 9,246
 41%
Commercial4,656
 20
 4,663
 21
 4,635
 21
Industrial6,201
 28
 7,313
 32
 7,571
 34
Other212
 1
 212
 1
 214
 1
Total fully bundled20,570
 91
 21,582
 96
 21,666
 97
DOS1,830
 8
 662
 3
 407
 2
Total retail22,400
 99
 22,244
 99
 22,073
 99
Wholesale314
 1
 258
 1
 353
 1
Total GWh sold22,714
 100% 22,502
 100% 22,426
 100%
            
Average number of retail customers (in thousands):           
Residential810
 88% 796
 88% 782
 88%
Commercial106
 12
 105
 12
 104
 12
Industrial2
 
 2
 
 2
 
Total918
 100% 903
 100% 888
 100%
            
Sierra Pacific:           
GWh sold:           
Residential2,492
 24% 2,375
 23% 2,315
 23%
Commercial2,954
 28
 2,933
 28
 2,942
 29
Industrial3,176
 30
 3,014
 30
 2,973
 29
Other16
 
 16
 
 16
 
Total fully bundled8,638
 82
 8,338
 81
 8,246
 81
DOS1,394
 13
 1,360
 13
 1,304
 13
Total retail10,032
 95% 9,698
 94% 9,550
 93%
Wholesale561
 5
 662
 6
 664
 7
Total GWh sold10,593
 100% 10,360
 100% 10,214
 100%
            
Average number of retail customers (in thousands):           
Residential295
 86% 291
 86% 288
 86%
Commercial47
 14
 47
 14
 46
 14
Total342
 100% 338
 100% 334
 100%


Variations in weather, economic conditions, particularly for gaming, mining and wholesale customers and various conservation, energy efficiency and private generation measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.


There are seasonal variations in the Nevada Utilities' electric business that are principally related to weather and the related use of electricity for air conditioning. Typically, 46-50%48-52% of Nevada Power's and 35-38%36-38% of Sierra Pacific's regulated electric revenue is reported in the months of June July, August andthrough September.



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The annual hourly peak customer demand on the Nevada Utilities' electric systems occurs as a result of air conditioning use during the cooling season. Peak demand represents the highest demand on a given day and at a given hour. On June 20, 2017,August 18, 2020, customer usage of electricity caused an hourly peak demand of 5,929 MW5,965 MWs on Nevada Power's electric system, which is 195 MW159 MWs less than the record hourly peak demand of 6,124 MWMWs set July 28, 2016. On August 1, 2017,July 29, 2020, customer usage of electricity caused an hourly peak demand of 1,824 MW1,906 MWs on Sierra Pacific's electric system, which is 18 MW less46 MWs more than the previous record hourly peak demand of 1,842 MW1,860 MWs set July 28, 2016.19, 2018.


Generating Facilities and Fuel Supply


The Nevada Utilities have ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding the Nevada Utilities' owned generating facilities as of December 31, 2017:2020:
FacilityNet Owned
Net CapacityCapacity
Generating FacilityLocationEnergy SourceInstalled
(MWs)(1)
(MWs)(1)
Nevada Power:
NATURAL GAS:
ClarkLas Vegas, NVNatural gas1973-20081,102 1,102 
LenzieLas Vegas, NVNatural gas20061,102 1,102 
Harry AllenLas Vegas, NVNatural gas1995-2011628 628 
HigginsPrimm, NVNatural gas2004530 530 
SilverhawkLas Vegas, NVNatural gas2004520 520 
Las VegasLas Vegas, NVNatural gas1994-2003272 272 
Sun PeakLas Vegas, NVNatural gas/oil1991210 210 
4,364 4,364 
RENEWABLES:
NellisLas Vegas, NVSolar201515 15 
GoodspringsGoodsprings, NVWaste heat2010
20 20 
Total Nevada Power4,384 4,384 
Sierra Pacific:
NATURAL GAS:
TracySparks, NVNatural gas1974-2008753 753 
Ft. ChurchillYerington, NVNatural gas1968-1971226 226 
Clark MountainSparks, NVNatural gas1994132 132 
1,111 1,111 
COAL:
Valmy Unit Nos. 1 and 2Valmy, NVCoal1981-1985522 261 
Total Sierra Pacific1,633 1,372 
Total NV Energy6,017 5,756 

(1)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates Nevada Power or Sierra Pacific's ownership of Facility Net Capacity.


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        Facility Net Owned
        Net Capacity Capacity
Generating Facility Location Energy Source Installed 
(MW)(1)
 
(MW)(1)
Nevada Power:          
NATURAL GAS:          
Clark Las Vegas, NV Natural gas 1973-2008 1,102
 1,102
Lenzie Las Vegas, NV Natural gas 2006 1,102
 1,102
Harry Allen Las Vegas, NV Natural gas 1995-2011 628
 628
Higgins Primm, NV Natural gas 2004 530
 530
Silverhawk Las Vegas, NV Natural gas 2004 520
 520
Las Vegas Las Vegas, NV Natural gas 1994-2003 272
 272
Sun Peak Las Vegas, NVNatural gas/oil 1991 210
 210
        4,364
 4,364
COAL:          
Navajo Unit Nos. 1, 2 and 3(2)
 Page, AZ Coal 1974-1976 2,250
 255
        

 

RENEWABLES:          
Goodsprings Goodsprings, NV Waste heat 2010 5
 5
Nellis Las Vegas, NV Solar 2015 15
 15
        20
 20
           
Total Nevada Power       6,634
 4,639
           
Sierra Pacific:          
NATURAL GAS:          
Tracy Sparks, NV Natural gas 1974-2008 753
 753
Ft. Churchill Yerington, NVNatural gas 1968-1971 226
 226
Clark Mountain Sparks, NV Natural gas 1994 132
 132
        1,111
 1,111
COAL:          
Valmy Unit Nos. 1 and 2 Valmy, NV Coal 1981-1985 522
 261
           
Total Sierra Pacific       1,633
 1,372
           
Total NV Energy       8,267
 6,011


(1)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MW) under specified conditions. Net Owned Capacity indicates Nevada Power or Sierra Pacific's ownership of Facility Net Capacity.
(2)Nevada Power currently anticipates retiring Navajo Unit Nos. 1, 2 and 3 on or before December 2019. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion.


The following table shows the percentages of the Nevada Utilities' total energy supplied by energy source for the years ended December 31:

202020192018
Nevada Power:
Natural gas66 %65 %64 %
Coal— 
Total energy generated66 70 70 
Energy purchased - long-term contracts (renewable)(1)
15 17 16 
Energy purchased - long-term contracts (non-renewable)13 11 10 
Energy purchased - short-term contracts and other
100 %100 %100 %
Sierra Pacific:
Natural gas48 %46 %48 %
Coal11 
Total energy generated56 57 56 
Energy purchased - long-term contracts (non-renewable)24 27 29 
Energy purchased - long-term contracts (renewable)(1)
15 13 12 
Energy purchased - short-term contracts and other
100 %100 %100 %

 2017 2016 2015
      
Nevada Power:     
Natural gas61% 64% 65%
Coal7
 7
 7
Total energy generated68
 71
 72
Energy purchased - long-term contracts (non-renewable)15
 14
 15
Energy purchased - long-term contracts (renewable)(1)
15
 14
 12
Energy purchased - short-term contracts and other2
 1
 1
 100% 100% 100%
      
Sierra Pacific:     
Natural gas44% 45% 41%
Coal5
 8
 13
Total energy generated49
 53
 54
Energy purchased - long-term contracts (non-renewable)38
 36
 36
Energy purchased - long-term contracts (renewable)(1)
11
 10
 9
Energy purchased - short-term contracts and other2
 1
 1
 100% 100% 100%
(1)     All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.

(1)All or some of the renewable energy attributes associated with renewable energy purchased may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of renewable energy credits or other environmental commodities.


The Nevada Utilities are required to have resources available to continuously meet their customer needs and reliably operate their electric systems. The percentage of the Nevada Utilities' energy supplied by energy source varies from year-to-year and is subject to numerous operational and economic factors such as planned and unplanned outages; fuel commodity prices; fuel transportation costs; weather; environmental considerations; transmission constraints; and wholesale market prices of electricity. The Nevada Utilities evaluate these factors continuously in order to facilitate economical dispatch of their generating facilities. When factors for one energy source are less favorable, the Nevada Utilities place more reliance on other energy sources. As long as the Nevada Utilities' purchases are deemed prudent by the PUCN, through their annual prudency review, the Nevada Utilities are permitted to recover the cost of fuel and purchased power. The Nevada Utilities also have the ability to reset quarterly BTER,the BTERs, with PUCN approval, based on the last twelve months fuel costs and purchased power and to reset quarterly DEAA.


In response to these energy supply challenges, theThe Nevada Utilities have adopted an approach to managing the energy supply function that has three primary elements. The first element is a set of management guidelines tofor procuring and optimizing the supply portfolio that is consistent with the requirements of a load serving entity with a full requirements obligation, and with the growth of private generation serving a small but growing group of customers with partial requirements. The second element is an energy risk management and risk control approach that ensures clear separation of roles between the day-to-day management of risks and compliance monitoring and control and ensures clear distinction between policy setting (or planning) and execution. Lastly, the Nevada Utilities pursue a process of ongoing regulatory involvement and acknowledgment of the resource portfolio management plans.


The Nevada Utilities have entered into multiple long-term power purchase contracts (three or more years) with suppliers that generate electricity utilizing renewable resources, natural gas and coal. Nevada Power has entered into contracts with a total capacity of 1,620 MW3,612 MWs with contract termination dates ranging from 2022 to 2067. Included in these contracts are 1,360 MW3,352 MWs of capacity offrom renewable energy, of which 100 MW2,068 MWs of capacity are under development or construction and not currently available. Sierra Pacific has entered into contracts with a total capacity of 703 MW1,178 MWs with contract termination dates ranging from 20182022 to 2044.2046. Included in these contracts are 512 MW992 MWs of capacity offrom renewable energy, of which 200 MW401 MWs of capacity are under development or construction and not currently available.



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The Nevada Utilities manage certain risks relating to their supply of electricity and fuel requirements by entering into various contracts, which may be accounted for as derivatives, including forwards, futures, options, swaps and other agreements. Refer to NV Energy's "General Regulation" section in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction and Nevada Power's Item 7A and Sierra Pacific's Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.


Natural Gas


The Nevada Utilities rely on first-of-the-month indexed physical gas purchases for the majority of natural gas needed to operate their generating facilities. To secure natural gas supplies for the generating facilities, the Nevada Utilities execute purchases pursuant to a PUCN approved four season laddering strategy. In 2017,2020, natural gas supply net purchases averaged 326,215320,382 and 141,188 Dth169,522 Dths per day with the winter period contracts averaging 272,467273,504 and 167,214 Dth189,422 Dths per day and the summer period contracts averaging 364,141353,678 and 122,702 Dth155,439 Dths per day for Nevada Power and Sierra Pacific, respectively. The Nevada Utilities believe supplies from these sources are presently adequate and available to meet its needs.


The Nevada Utilities contract for firm natural gas pipeline capacity to transport natural gas from production areas to their service territory through direct interconnects to the pipeline systems of several interstate natural gas pipeline systems, including Nevada Power who contracts with Kern River, an affiliated company. Sierra Pacific utilizes natural gas storage contracted from interstate pipelines to meet retail customer requirements and to manage the daily changes in demand due to changes in weather and other usage factors. The stored natural gas is typically replaced during off-peak months when the demand for natural gas is historically lower than during the heating season.


Coal


Other than the agreement mentioned below for the Navajo Generating Station, the Nevada Utilities have no commitments to purchase coal for 2018 or beyond and will relySierra Pacific relies on spot market solicitations for any coal supplies needed during 2018 and will regularly monitor the western coal market for opportunities to meet these needs. Nevada Power eliminated Reid Gardner Unit No. 4's coal pile in March 2017. The Nevada Utilities haveSierra Pacific has a transportation services contractscontract with Union Pacific Railroad Company to ship coal from various origins in Centralcentral Utah, Westernwestern Colorado and Wyoming that expiredexpires December 31, 20172025. Sierra Pacific has no commitments to purchase coal for Nevada Power and expire December 31, 2019 for Sierra Pacific.2021 or beyond. The Navajo Generating Station jointly owned bywas shut down in November 2019 and Nevada Power along with other entities and operated by Salt River Project, has ano coal purchase agreement that extends through December 2019.requirements going forward.


Transmission and Distribution        Energy Imbalance Market

The Nevada Utilities' transmission system is part of the Western Interconnection, a regional grid in the United States. The Western Interconnection includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. The Nevada Utilities' transmission system, together with contractual rights on other transmission systems, enables the Nevada Utilities to integrate and access generation resources to meet their customer load requirements. Nevada Power's transmission and distribution systems included approximately 2,000 miles of transmission lines, 25,000 miles of distribution lines and 210 substations as of December 31, 2017. Sierra Pacific's transmission and distribution systems included approximately 2,300 miles of transmission lines, 17,700 miles of distribution lines and 200 substations as of December 31, 2017.

ON Line is a 231 mile, 500-kV transmission line connecting Nevada Power's and Sierra Pacific's service territories. ON Line provides the ability to jointly dispatch energy throughout Nevada and provide access to renewable energy resources in parts of northern and eastern Nevada, which enhances the Nevada Utilities' ability to manage and optimize their generating facilities. ON Line provides between 600 and 800 MW of transfer capability with interconnection between the Robinson Summit substation on the Sierra Pacific system and the Harry Allen substation on the Nevada Power system. ON Line was a joint project between the Nevada Utilities and Great Basin Transmission, LLC. The Nevada Utilities own a 25% interest in ON Line and have entered into a long-term transmission use agreement with Great Basin Transmission, LLC for its 75% interest in ON Line until 2054. The Nevada Utilities share of its 25% interest in ON Line and the long-term transmission use agreement is split 95% for Nevada Power and 5% for Sierra Pacific.



The Nevada Utilities participate in the EIM operated by the California ISO, which reduces costs to serve customers through more efficient dispatch of a larger and more diverse pool of resources, more effectively integrates renewables and enhances reliability through improved situational awareness and responsiveness. The EIM expands the real-time component of the California ISOISO's market technology to optimize and balance electricity supply and demand every five minutes across the EIM footprint. The EIM is voluntary and available to all balancing authorities in the Westernwestern United States. EIM market participants submit bids to the California ISO market operator before each hour for each generating resource they choose to be dispatched by the market. Each bid is comprised of a dispatchable operating range, ramp rate and prices across the operating range. The California ISO market operator uses sophisticated technology to select the least-cost resources to meet demand and send simultaneous dispatch signals to every participating generator across the EIM footprint every five minutes. In addition to generation resource bids, the California ISO market operator also receives continuous real-time updates of the transmission grid network, meteorological and load forecast information that it uses to optimize dispatch instructions. Outside the EIM footprint, utilities in the Westernwestern United States do not utilize comparable technology and are largely limited to transactions within the borders of their balancing authority area to balance supply and demand intra-hour using a combination of manual and automated dispatch. The EIM delivers customer benefits by leveraging automation geographic and resource diversity to result in more efficient dispatch, more effective integration of renewables and improved situational awareness. Benefits are expected to increase further with renewable resource expansion and as more entities join the EIM bringing incremental diversity.


Future GenerationTransmission and Distribution


The Nevada Utilities' transmission system is part of the Western Interconnection, a regional grid in the United States. The Western Interconnection includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. The Nevada Utilities' transmission system, together with contractual rights on other transmission systems, enables the Nevada Utilities file to integrate and access generation resources to meet their customer load requirements. Nevada Power's transmission and distribution systems included approximately 1,900 miles of transmission lines, 14,000 miles of distribution lines and 210 substations as of December 31, 2020. Sierra Pacific's transmission and distribution systems included approximately 4,200 miles of transmission lines, 9,500 miles of distribution lines and 200 substations as of December 31, 2020.

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ON Line is a 231-mile, 500-kV transmission line connecting Nevada Power's and Sierra Pacific's service territories. ON Line provides the ability to jointly dispatch energy throughout Nevada and provide access to renewable energy resources in parts of northern and eastern Nevada, which enhances the Nevada Utilities' ability to manage and optimize their generating facilities. ON Line provides between 600 MW northbound and 900 MW southbound of transfer capability with interconnection between the Robinson Summit substation on the Sierra Pacific system and the Harry Allen substation on the Nevada Power system. ON Line was a joint project between the Nevada Utilities and Great Basin Transmission, LLC. The Nevada Utilities own a 25% interest in ON Line and have entered into a long-term transmission use agreement with Great Basin Transmission, LLC for its 75% interest in ON Line until 2054. The Nevada Utilities share of its 25% interest in ON Line and the long-term transmission use agreement is split 75% for Nevada Power and 25% for Sierra Pacific, previously split 95% for Nevada Power and 5% for Sierra Pacific. In December 2019, the PUCN approved an order to update the split starting January 1, 2020 to 75% for Nevada Power and 25% for Sierra Pacific to more accurately reflect the benefits obtained from the transmission line. In August 2020, the FERC approved the amended agreement between the Nevada Utilities and Great Basin Transmission, LLC that reallocated the PUCN-approved, updated ownership percentage from Nevada Power to Sierra Pacific.

Future Generation, Conservation and Energy Efficiency

        Energy Supply Planning

Within the energy supply planning process, there are four key components covering different time frames:

IRPs are filed by the Nevada Utilities for approval by the PUCN every three years and the Nevada Utilities may, as necessary, may file amendments to their IRPs. IRPs are prepared in compliance with Nevada laws and regulations and cover a 20-year period. Nevada law governing the IRP process was modified in 2017 and now requires joint filings by Nevada Power and Sierra Pacific. IRPs develop a comprehensive, integrated plan that considers customer energy requirements and propose the resources to meet those requirements in a manner that is consistent with prevailing market fundamentals. The ultimate goal of the IRPs is to balance the objectives of minimizing costs and reducing volatility while reliably meeting the electric needs of the Nevada Power's and Sierra Pacific'sUtilities' customers. Costs incurred to complete projects approved through the IRP process still remain subject to review for reasonableness by the PUCN.

Nevada PowerEnergy Supply Plans ("ESP") are filed its triennial IRP in July 2015 and received PUCN approval in December 2015. Nevada Power filed an amended IRP in August 2016 and received PUCN approval in December 2016. Sierra Pacific filed its triennial IRP in July 2016 and received PUCN approval in December 2016. As a part of the filings, the Nevada Utilities sought PUCN authorization to acquire the South Point Energy Center, a 504-MW combined-cycle generating facility located in Arizona. In December 2016,with the PUCN deniedfor approval and operate in conjunction with the acquisition of this facility. In January 2017, Nevada Power filed a petition for reconsideration relating to the acquisition of South Point Energy Center. In February 2017, the PUCN affirmed the denial of the acquisition of South Point Energy Center.PUCN-approved 20-year IRP. The Nevada Utilities amended their respective IRPs in November 2017, requesting approval of three long-term renewable purchase power contracts. Nevada law was modified in 2017 under Senate Bill 146 and for future filings requires Nevada Power and Sierra Pacific to file jointly.

There is the potential for continued price volatility in the Nevada Utilities' service territories, particularly during peak periods. Too great of a dependence on generation from the wholesale market can lead to power price volatilities depending on available power supply and prevailing natural gas prices. The Nevada Utilities face load obligation uncertainty due to the potential for customer switching. Some counterparties in these areas have significant credit difficulties, representing credit risk to the Nevada Utilities. Finally, the Nevada Utilities' own credit situation can have an impact on its ability to enter into transactions.

Within the energy supply planning process, there are three key components covering different time frames:

The PUCN-approved long-term IRP which is filed every three years andESP has a 20-yearone- to three-year planning horizon;
The PUCN-approved energy supply plan whichhorizon and is an intermediate termintermediate-term resource procurement and risk management plan that establishes the supply portfolio strategies within which intermediate termintermediate-term resource requirements will be met with PUCN approval required for executing contracts of longer than three years.
Distributed Resource Plans ("DRP") are filed with the PUCN for approval and hasoperate in conjunction with the PUCN-approved 20-year IRP. The DRP establishes a oneformal process to three year planning horizon;aid in the cost-effective integration of distributed resources into the Nevada Utilities' distribution and transmission process and ultimately the NV Energy utilities' electricity grid.
TacticalAction plans are filed with the PUCN for approval and operate in conjunction with the PUCN-approved 20-year IRP and PUCN-approved ESP. The action plan establishes tactical execution activities with a one-month to twelve-month focus.


The energy supply plan operates in conjunction with the PUCN-approved 20-year IRP. It serves as a guide for near-term execution and fulfillment of energy needs. In September 2017,July 2020, the Nevada Utilities filed their fourth amendment to the IRP requesting approval of two new renewable energy power purchase agreements, a utility-owned renewable facility, a utility-owned community scale renewable facility and updates to their respective energy supply plans seekingthe Transmission Plan. In July 2020, the Nevada Utilities also filed a joint petition requesting to defer the September 2020 filing of the Updated Distributed Resource Plans until its June 2021 Joint Integrated Resource Plan is filed. In September 2020, the PUCN authorizationissued an order granting the petition to implement a laddering strategy fordefer the procurement of short-term energyfiling and capacityordered the Nevada Utilities to serve peak customer demand. The PUCN approved Sierra Pacific's laddering strategyconduct an informal workshop in October 2017,2020 to provide an update of the distributed resources plan and present information consistent with the statutory requirements. In November 2020, the Nevada Utilities filed a settlement stipulation for Phase I of the fourth amendment to the IRP, which was followed by a hearing. The settlement resolved all issues related to the load forecast, four renewable energy projects and certain transmission investments. The stipulation was approved by the PUCN in December 2020. Phase II hearing was scheduled in February 2021.
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Emissions Reduction and Capacity Replacement Plan

In compliance with Senate Bill No. 123, Nevada Power's laddering strategyPower retired 255 MWs of coal-fueled generation in November2019 in addition to the 557 MWs of coal-fueled generation retired in 2017. WhenConsistent with the Emissions Reduction and Capacity Replacement Plan ("ERCR Plan"), between 2014 and 2016, Nevada Power acquired 536 MWs of natural gas generating resources, executed long-term power purchase agreements for 200 MWs of nameplate renewable energy supply plan calls for executing contractscapacity and constructed a 15-MW solar photovoltaic facility. Nevada Power has the option to acquire 35 MWs of longer than three years,nameplate renewable energy capacity in the future under the ERCR Plan, subject to PUCN approval is required.approval.



    Energy Efficiency Programs
Energy-Efficiency Programs


The Nevada Utilities have provided a comprehensive set of energy efficiency, demand response and conservation programs to their Nevada electric customers. The programs are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. Current programs offer services to customers such as energy audits and customer education and awareness efforts that provide information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, the Nevada Utilities have offered rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for efficient construction. Incentives are also paid to residential customers who participate in the air conditioner load control program and nonresidential customers who participate in the nonresidential load management program. Energy efficiency program costs are recovered through annual rates set by the PUCN, and adjusted based on the Nevada Utilities' annual filing to recover current program costs and any over or under collections from the prior filing, subject to prudence review. During 2017,2020, Nevada Power spent $39$33 million on energy efficiency programs, resulting in an estimated 191,836 MWh218,913 MWhs of electric energy savings and an estimated 224 MW207 MWs of electric peak load management. During 2017,2020, Sierra Pacific spent $11$10 million on energy efficiency programs, resulting in an estimated 57,502 MWh96,933 MWhs of electric energy savings and an estimated 18 MW32 MWs of electric peak load management.


Regulated Natural Gas Operations


Sierra Pacific is engaged in the procurement, transportation and distribution of natural gas forto customers in its service territory.territory and the related procurement, transportation and storage of natural gas for the benefit of those customers. Sierra Pacific purchases natural gas from various suppliers and contracts with interstate natural gas pipelines for transportation of the natural gas from the production areas to Sierra Pacific's service territory and for storage services to manage fluctuations in system demand and seasonal pricing. Sierra Pacific sells natural gas and delivery services to end-use customers on its distribution system; sells natural gas to other utilities, municipalities and energy marketing companies; and transports natural gas through its distribution system for a number of end-use customers who have independently secured their supply of natural gas. During 2017, 11%2020, 10% of the total natural gas delivered through Sierra Pacific's distribution system was for transportation service.


Natural gas property consists primarily of natural gas mains and service lines, meters, and related distribution equipment, including feeder lines to communities served from natural gas pipelines owned by others. The natural gas distribution facilities of Sierra Pacific included 3,3003,500 miles of natural gas mains and service lines as of December 31, 2017.2020.

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Customer Usage and Seasonality


The percentages of natural gas sold to Sierra Pacific's retail and wholesale customers by class of customer, total DthDths of natural gas sold, total DthDths of transportation service and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Residential56 %57 %55 %
Commercial(1)
28 29 28 
Industrial(1)
10 10 11 
Total retail94 96 94 
Wholesale(2)
100 %100 %100 %
Total Dths of natural gas sold (in thousands)18,622 19,846 18,334 
Total Dths of transportation service (in thousands)1,850 2,217 2,250 
Total average number of retail customers (in thousands)174 170 167 
 2017 2016 2015
      
Residential53% 52% 49%
Commercial(1)
27
 26
 24
Industrial(1)
9
 9
 8
Total retail89
 87
 81
Wholesale11
 13
 19
 100% 100% 100%
      
Total Dth of natural gas sold (in thousands)19,313
 17,677
 17,600
Total Dth of transportation service (in thousands)1,977
 2,256
 2,288
Total average number of retail customers (in thousands)165
 163
 159


(1)Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers with monthly gas usage less than 12,000 therms during five consecutive winter months. Industrial customers are non-residential customers that use natural gas in excess of 12,000 therms during one or more winter months.
(1)Commercial and industrial customers are classified primarily based on their natural gas usage. Commercial customers are non-residential customers with monthly gas usage less than 12,000 therms during five consecutive winter months. Industrial customers are non-residential customers that use natural gas in excess of 12,000 therms during one or more winter months.


(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

There are seasonal variations in Sierra Pacific's regulated natural gas business that are principally due to the use of natural gas for heating. Typically, 50-60%47-56% of Sierra Pacific's regulated natural gas revenue is reported in the months of January, February, March and December.December through March.


On January 6, 2017,February 3, 2020, Sierra Pacific recorded its highest peak-day natural gas delivery of 148,077 Dth,141,416 Dths, which is 15,497 Dth22,158 Dths less than the record peak-day delivery of 163,574 DthDths set on December 9, 2013. This peak-day delivery consisted of 94%95% traditional retail sales service and 6%5% transportation service.


Fuel Supply and Capacity


The purchase of natural gas for Sierra Pacific's regulated natural gas operations is done in combination with the purchase of natural gas for Sierra Pacific's regulated electric operations. In response to energy supply challenges, Sierra Pacific has adopted an approach to managing the energy supply function that has three primary elements, as discussed earlier under Generating Facilities and Fuel Supply. Similar to Sierra Pacific's regulated electric operations, as long as Sierra Pacific's purchases of natural gas are deemed prudent by the PUCN, through its annual prudency review, Sierra Pacific is permitted to recover the cost of natural gas. Sierra Pacific also has the ability, with PUCN approval, to reset quarterly BTER, with PUCN approval,the BTERs, based on the last twelve months fuel costs, and to reset quarterly DEAA.


Human Capital

Employees


As of December 31, 2017,2020, Nevada Power had approximately 1,400 employees, of which approximately 700 were covered by a collective bargaining agreementunion contract with the International Brotherhood of Electrical Workers.


As of December 31, 2017,2020, Sierra Pacific had approximately 1,000 employees, of which approximately 500 were covered by a collective bargaining agreementunion contract with the International Brotherhood of Electrical Workers.


For more information regarding Nevada Power's and Sierra Pacific's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.


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NORTHERN POWERGRID


Northern Powergrid, an indirect wholly owned subsidiary of BHE, is a holding company which owns two companies that distribute electricity in Great Britain, Northern Powergrid (Northeast) Limitedplc and Northern Powergrid (Yorkshire) plc. In addition to the Northern Powergrid Distribution Companies, Northern Powergrid also owns a meter asset rental business that leases smart meters to energy suppliers in the United Kingdom, and Ireland, an engineering contracting business that provides electrical infrastructure contracting services primarily to third parties and a hydrocarbon exploration and development business that is focused on developing integrated upstream gas projects in Europe and Australia.


The Northern Powergrid Distribution Companies serve 3.9 million end-users and operate in the north-east of England from North Northumberland through Tyne and Wear, County Durham and Yorkshire to North Lincolnshire, an area covering 10,000 square miles. The principal function of the Northern Powergrid Distribution Companies is to build, maintain and operate the electricity distribution network through which the end-user receives a supply of electricity.


The Northern Powergrid Distribution Companies receive electricity from the national grid transmission system and from generators that are directly connected to the distribution network and distribute it to end-users' premises using their networks of transformers, switchgear and distribution lines and cables. Substantially all of the end-users in the Northern Powergrid Distribution Companies' distribution service areas are directly or indirectly connected to the Northern Powergrid Distribution Companies' networks and electricity can only be delivered to these end-users through their distribution systems, thus providing the Northern Powergrid Distribution Companies with distribution volumes that are relatively stable from year to year. The Northern Powergrid Distribution Companies charge fees for the use of their distribution systems to the suppliers of electricity.


The suppliers purchase electricity from generators, sell the electricity to end-user customers and use the Northern Powergrid Distribution Companies' distribution networks pursuant to an industry standard "Distribution Connection and Use of System Agreement." During 2017,2020, RWE Npower PLC and certain of its affiliates and British Gas Trading Limited represented 21%15% and 15%12%, respectively, of the total combined distribution revenue of the Northern Powergrid Distribution Companies. Variations in demand from end-users can affect the revenues that are received by the Northern Powergrid Distribution Companies in any year, but such variations have no effect on the total revenue that the Northern Powergrid Distribution Companies are allowed to recover in a price control period. Under- or over-recoveries against price-controlled revenues are carried forward into prices for future years.


The Northern Powergrid Distribution Companies' combined service territory features a diverse economy with no dominant sector. The mix of rural, agricultural, urban and industrial areas covers a broad customer base ranging from domestic usage through farming and retail to major industry including automotives, chemicals, mining, steelmaking and offshore marine construction. The industry within the area is concentrated around the principal centers of Newcastle, Middlesbrough, Sheffield and Leeds.



The price controlled revenue of the Northern Powergrid Distribution Companies is set out in the special conditions of the licenses of those companies. The licenses are enforced by the regulator, GEMA, through the Gas and Electricity Markets Authority through its office of gas and electric markets (known as "Ofgem")Ofgem and limit increases to allowed revenues (or may require decreases) based upon the rate of inflation, other specified factors and other regulatory action. Changes to the price controls can be made by the regulator, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's Competition and Markets Authority ("CMA"). It has been the convention in Great Britain for regulators to conduct periodic regulatory reviews before making proposals for any changes to the price controls. The current electricity distribution price control became effective April 1, 2015 and is expected towill continue through March 31, 2023. Following initial submission of the Northern Powergrid Distribution Companies' business plans for the current price control period to Ofgem in July 2013 and resubmission, following feedback from Ofgem in March 2014, the final determinations for the current price control were published in November 2014. In March 2015 Northern Powergrid was the only electricity distributor to appeal Ofgem's price control decision and in September 2015 the appeal authority allowed part of the appeal, awarding an additional £30 million (in 2012/13 prices) in expenditure allowances.


GWh
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GWhs and percentages of electricity distributed to the Northern Powergrid Distribution Companies' end-users and the total number of end-users as of and for the years ended December 31 were as follows:

202020192018
Northern Powergrid (Northeast) plc:
Residential5,252 40 %4,982 36 %5,125 36 %
Commercial(1)
1,411 11 1,644 12 1,782 13 
Industrial(1)
6,377 48 7,097 51 7,134 50 
Other142 156 198 
13,182 100 %13,879 100 %14,239 100 %
Northern Powergrid (Yorkshire) plc:
Residential7,694 39 %7,311 35 %7,509 36 %
Commercial(1)
2,048 11 2,391 12 2,558 12 
Industrial(1)
9,540 49 10,722 52 10,716 51 
Other217 236 268 
19,499 100 %20,660 100 %21,051 100 %
Total electricity distributed32,681 34,539 35,290 
Number of end-users (in thousands):
Northern Powergrid (Northeast) plc1,615 1,612 1,603 
Northern Powergrid (Yorkshire) plc2,319 2,314 2,301 
3,934 3,926 3,904 

 2017 2016 2015
Northern Powergrid (Northeast) Limited:           
Residential5,125
 36% 5,227
 36% 5,144
 34%
Commercial(1)
1,782
 13
 2,222
 15
 2,417
 16
Industrial(1)
7,134
 50
 6,963
 48
 7,160
 48
Other198
 1
 214
 1
 231
 2
 14,239
 100% 14,626
 100% 14,952
 100%
            
Northern Powergrid (Yorkshire) plc:           
Residential7,509
 36% 7,612
 36% 7,574
 35%
Commercial(1)
2,558
 12
 3,116
 15
 3,352
 16
Industrial(1)
10,716
 51
 10,275
 48
 10,403
 48
Other268
 1
 290
 1
 299
 1
 21,051
 100% 21,293
 100% 21,628
 100%
            
Total electricity distributed35,290
   35,919
   36,580
  
            
Number of end-users (in thousands):           
Northern Powergrid (Northeast) Limited1,603
   1,602
   1,597
  
Northern Powergrid (Yorkshire) plc2,301
   2,301
   2,294
  
 3,904
   3,903
   3,891
  
(1)     The increase in industrial and decrease in commercial is largely due to the Great Britain-wide customer reclassifications which are in progress (as a result of Ofgem approved industry changes), negatively impacting commercial volumes by 100 GWhs in 2018 compared to 2017.

(1)The increase in industrial and decrease in commercial is largely due to an acceleration in the Great Britain-wide customer reclassifications which are in progress (as a result of Ofgem approved industry changes), negatively impacting commercial volumes by 700 GWhs in 2017 compared to 2016.


As of December 31, 2017,2020, the combined electricity distribution network of the Northern Powergrid Distribution Companies' combined electricity distribution networkCompanies included 17,400approximately 17,300 miles of overhead lines, 42,00042,800 miles of underground cables and 750770 major substations.



BHE PIPELINE GROUP (EASTERN ENERGY GAS)


The BHE Pipeline Group consistsGT&S

BHE GT&S is an indirect wholly owned subsidiary of BHE'sBHE. BHE GT&S' operations, through its ownership of Eastern Energy Gas, includes three interstate natural gas pipeline companies, Northern Naturalsystems, one of the nation's largest underground natural gas storage systems and one liquefied natural gas export, import and storage facility. BHE GT&S' operations also include two smaller liquefied natural gas facilities, one field service company, and one gathering and processing company.

Eastern Energy Gas' principal subsidiaries are EGTS and Carolina Gas Transmission, LLC ("CGT"). EGTS's operations include natural gas transmission and Kern River.storage pipelines located in Maryland, New York, Ohio, Pennsylvania, Virginia and West Virginia. EGTS also operates one of the nation's largest underground natural gas storage systems located in New York, Pennsylvania and West Virginia. CGT's operations include an interstate natural gas pipeline system located in South Carolina and southeastern Georgia. Eastern Energy Gas also owns a 50% equity interest in Iroquois Gas Transmission System L.P. ("Iroquois"). Iroquois owns and operates an interstate natural gas pipeline located in the states of New York and Connecticut.



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Eastern Energy Gas' LNG operations involve the export, import and storage of LNG at the Cove Point LNG Facility that is owned by Cove Point LNG, LP ("Cove Point"), located in Maryland, as well as the transportation of regasified LNG to the interstate pipeline grid and mid-Atlantic markets and the liquefaction of natural gas for export as LNG. Cove Point's LNG Facility has an operational peak regasification daily send-out capacity of approximately 1.8 million Dth and an aggregate LNG storage capacity of approximately 14.6 billions of cubic feet equivalent ("Bcfe"). In addition, Cove Point has a small liquefier that has the potential to produce approximately 15,000 Dth/day. The Liquefaction Facility consists of one LNG train with a nameplate outlet capacity of 5.25 million tonnes per annum ("Mtpa"). Cove Point has authorization from the Department of Energy ("DOE") to export up to 0.77 Bcfe/day (approximately 5.75 Mtpa) should the Liquefaction Facility perform better than expected. Cove Point's 36-inch diameter underground interstate natural gas pipelines are approximately 139 miles, with interconnections to Transcontinental Gas Pipeline, LLC in Fairfax County, Virginia, and with Columbia Gas Transmission, LLC and EGTS in Loudoun County, Virginia. Eastern Energy Gas operates, as the general partner, and owns a 25% limited partnership interest in the Cove Point liquefied natural gas export, import and storage facility. BHE GT&S also operates and has ownership interests in three smaller liquefied natural gas facilities in Alabama, Florida and Pennsylvania.

In total, Eastern Energy Gas operates approximately 5,400 miles of natural gas transmission, gathering and storage pipelines, of which approximately 5,300 miles are owned by Eastern Energy Gas, with a design capacity of 12.5 Bcf per day as well as approximately 100 miles of natural gas liquids pipelines operated by BHE GT&S. Eastern Energy Gas also operates 17 underground storage fields with a total operating storage design capacity of approximately 420 Bcf, of which approximately 306 Bcf relates to natural gas storage field capacity that Eastern Energy Gas owns.

BHE GT&S' pipeline system is configured with approximately 360 active receipt and delivery points. In 2020, BHE GT&S delivered over 2.0 trillion cubic feet ("Tcf") of natural gas to its customers.

BHE GT&S' natural gas transmission and storage earnings primarily result from rates established by FERC. Revenues derived from BHE GT&S' pipeline operations are primarily from reservation charges for firm transportation and storage services as provided for in their FERC-approved tariffs. Reservation charges are required to be paid regardless of volumes transported or stored. The profitability of these businesses is dependent on their ability, through the rates they are permitted to charge, to recover costs and earn a reasonable return on their capital investments. Approximately 91% of BHE GT&S' transmission capacity is subscribed including 88% under long-term contracts (two years or greater) and 3% on a year-to-year basis. BHE GT&S' storage services are 100% subscribed with long-term contracts. Additionally, BHE GT&S receives revenue from firm fee-based contractual arrangements, including negotiated rates, for certain pipeline transportation and LNG storage and terminal services. Variability in BHE GT&S' earnings results from changes in operating and maintenance expenditures, as well as changes in rates and the demand for services, which are dependent on weather, changes in commodity prices and the economy.

Except for quantities of natural gas owned and managed for operational and system balancing purposes, BHE GT&S does not own the natural gas that is transported through its system. The sale of natural gas for operational and system balancing purposes, sales from our field services company and sales of natural gas liquids accounts for the majority of the remaining operating revenue.

During 2020, BHE GT&S had two customers that each accounted for greater than 10% of its operating revenue and its ten largest customers accounted for 53% of its total operating revenue. BHE GT&S has agreements with terms through 2038 to retain the majority of its two largest customers' volumes. The loss of any of these significant customers, if not replaced, could have a material adverse effect on BHE GT&S.

Human Capital

Employees

As of December 31, 2020, Eastern Energy Gas had approximately 1,500 employees, consisting of approximately 1,100 natural gas operations employees and 400 corporate services employees. As of December 31, 2020, approximately 600 employees were covered by a union contract with the Utility Workers Union of America. For more information regarding Eastern Energy Gas' human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.
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Northern Natural Gas


Northern Natural Gas, an indirect wholly owned subsidiary of BHE, owns the largest interstate natural gas pipeline system in the United States, as measured by pipeline miles, which reaches from west Texas to Michigan's Upper Peninsula. Northern Natural Gas primarily transports and stores natural gas for utilities, municipalities, gas marketing companies and industrial and commercial users. Northern Natural Gas' pipeline system consists of two commercial segments. Its traditional end-use and distribution market area in the northern part of its system, referred to as the Market Area, includes points in Iowa, Nebraska, Minnesota, Wisconsin, South Dakota, Michigan and Illinois. Its natural gas supply and delivery service area in the southern part of its system, referred to as the Field Area, includes points in Kansas, Texas, Oklahoma and New Mexico. The Market Area and Field Area are separated at a Demarcation Point ("Demarc"). Northern Natural Gas' pipeline system consists of 14,70014,500 miles of natural gas pipelines, including 6,3006,000 miles of mainline transmission pipelines and 8,4008,500 miles of branch and lateral pipelines, with a Market Area design capacity of 5.96.3 Bcf per day, a Field Area delivery capacity of 1.7 Bcf per day to the Market Area and 1.31.4 Bcf per day to the West Texas area and over 79 Bcf of firm service and operational storage cycle capacity in five storage facilities. Northern Natural Gas' pipeline system is configured with approximately 2,3002,240 active receipt and delivery points which are integrated with the facilities of LDCs. Many of Northern Natural Gas' LDC customers are part of combined utilities that also use natural gas as a fuel source for electric generation. Northern Natural Gas deliversdelivered over 1.0 Trillion Cubic Feet ("Tcf")1.3 Tcf of natural gas to its customers annually.in 2020.


Northern Natural Gas' transportation rates and most of its storage rates are cost-based. These rates are designed to provide Northern Natural Gas with an opportunity to recover its costs of providing services and earn a reasonable return on its investments. In addition, Northern Natural Gas has fixed rates that are market-based for certain of its firm storage contracts with contract terms that expire in 2028.


Northern Natural Gas' operating revenue for the years ended December 31 was as follows (in millions):
202020192018
Transportation:
Market Area$633 65 %$544 64 %$518 58 %
Field Area - deliveries to Demarc137 14 106 12 102 11 
Field Area - other deliveries89 10 95 11 71 
Total transportation859 89 745 87 691 78 
Storage91 65 68 
Total transportation and storage revenue950 98 810 95 759 86 
Gas, liquids and other sales18 42 128 14 
Total operating revenue$968 100 %$852 100 %$887 100 %
 2017 2016 2015
Transportation:        
Market Area$504
73% $492
77% $474
72%
Field Area - deliveries to Demarc36
5
 23
4
 49
7
Field Area - other deliveries50
8
 41
6
 35
6
Total transportation590
86
 556
87
 558
85
Storage71
10
 69
11
 62
10
Total transportation and storage revenue661
96
 625
98
 620
95
Gas, liquids and other sales28
4
 11
2
 36
5
Total operating revenue$689
100% $636
100% $656
100%



Substantially all of Northern Natural Gas' Market Area transportation revenue is generated from reservation charges, with the balance from usage charges. Northern Natural Gas transports natural gas primarily to local distribution markets and end-users in the Market Area. Northern Natural Gas provides service to 8184 utilities, including MidAmerican Energy, an affiliate company, which serve numerous residential, commercial and industrial customers. Most of Northern Natural Gas' transportation capacity in the Market Area is committed to customers under firm transportation contracts, where customers pay Northern Natural Gas a monthly reservation charge for the right to transport natural gas through Northern Natural Gas' system. Reservation charges are required to be paid regardless of volumes transported or stored. As of December 31, 2017,2020, approximately 85%75% of Northern Natural Gas' customers' entitlement in the Market Area have terms beyond 20192022 and over 78%approximately 51% beyond 2020.2024. As of December 31, 2017,2020, the weighted average remaining contract term for Northern Natural Gas' Market Area firm transportation contracts is over eightsix years.



Northern Natural Gas' Field Area customers consist primarily of energy marketing companies and midstream companies, which take advantage of the price spread opportunities created between Field Area supply points and Demarc. In addition, there are a growing number of midstream customers that are delivering gas south in the Field Area to the Waha Hub market. The remaining Field Area transportation service is sold to power generators connected to Northern Natural Gas' system in Texas and New Mexico that are contracted on a long-term basis with terms that extend to at least 2020,a weighted average remaining contract term of six years, and various LDCs, energy marketing companies and midstream companies for both connected and off-system markets.



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Northern Natural Gas' storage services are provided through the operation of one underground natural gas storage field in Iowa and two underground natural gas storage facilities in Kansas andKansas. Additionally, Northern Natural Gas has two LNG storage peaking units, one in Iowa and one in Minnesota.Minnesota, that support its transportation service. The three underground natural gas storage facilities and two LNG storage peaking units have a total firm service and operational storage cycle capacity of over 79 Bcf and over 2.2 Bcf per day of peak delivery capability. These storage facilities provide operational flexibility for the daily balancing of Northern Natural Gas' system and provide services to customers for their winter peaking and year-round load swing requirements.

Northern Natural Gas has 65.1 Bcf of firm storage contracts with its cost-based and market-based services.contracts. Firm storage contracts with cost-basedat maximum tariff rates representing 57.1represent 54.4 Bcf, have anand the market-based rate contracts represent the remaining 10.7 Bcf. The average remaining contract term of seven years and are contracted at maximum tariff rates. The remainingfor firm storage contracts with market-based rates, representing 8.0 Bcf, have an average remaining contract term of tenis five years.


Except for quantities of natural gas owned and managed for operational and system balancing purposes, Northern Natural Gas does not own the natural gas that is transported through its system. The sale of natural gas for operational and system balancing purposes accounts for the majority of the remaining operating revenue.


During 2017,2020, Northern Natural Gas had threetwo customers including MidAmerican Energy, that each accounted for greater than 10% of its transportation and storage revenue and its ten largest customers accounted for 65%64% of its system-wide transportation and storage revenue. Northern Natural Gas has agreements with terms from 2022 tothrough 2029 and 2034 to retain the majority of its threetwo largest customers' volumes. The loss of any of these significant customers, if not replaced, could have a material adverse effect on Northern Natural Gas.


Northern Natural Gas' extensive pipeline system, which is interconnected with many interstate and intrastate pipelines in the national grid system, has access to multiple major supply basins. Direct access is available from producers in the Anadarko, Permian and Hugoton basins, some of which have recently experienced increased production from shale and tight sands formations adjacent to Northern Natural Gas' pipeline. Since 2011, the pipeline has connected 1,985,000 Dth2,395,000 Dths per day of supply access from the Wolfberry shale formationMidland and Delaware Basins within the Permian Basin area in west Texas and from the Granite Wash tight sands formations in the Texas panhandle and in Oklahoma. Additionally, Northern Natural Gas has interconnections with several interstate pipelines and several intrastate pipelines with receipt, delivery, or bi-directional capabilities. Because of Northern Natural Gas' location and multiple interconnections it is able to access natural gas from other key production areas, such as the Rocky Mountain, Williston, including the Bakken formation, and western Canadian basins. The Rocky Mountain basins are accessed through interconnects with Trailblazer Pipeline Company, Tallgrass Interstate Gas Transmission, LLC, Cheyenne Plains Gas Pipeline Company, LLC, Colorado Interstate Gas Company and Rockies Express Pipeline, LLC ("REX"). The western Canadian basins are accessed through interconnects with Northern Border Pipeline Company ("Northern Border"), Great Lakes Gas Transmission Limited Partnership ("Great Lakes") and Viking Gas Transmission Company ("Viking"). This supply diversity and access to both stable and growing production areas provides significant flexibility to Northern Natural Gas' system and customers.


Northern Natural Gas' system experiences significant seasonal swings in demand and revenue typically with the highest demand and revenues typicallyapproximately 60% of transportation revenue occurring during the months of November through March. This seasonality provides Northern Natural Gas with opportunities to deliver additional value-added services, such as firm and interruptible storage services. As a result of Northern Natural Gas' geographic location in the middle of the United States and its many interconnections with other pipelines, Northern Natural Gas has the opportunity to augment its steady end user and LDC revenue by capitalizing on opportunities for shippers to reach additional markets, such as Chicago, Illinois, other parts of the Midwest, and Texas, through interconnects.



Kern River


Kern River, an indirect wholly owned subsidiary of BHE, owns an interstate natural gas pipeline system that extends from supply areas in the Rocky Mountains to consuming markets in Utah, Nevada and California. Kern River provided 26% of California's demand for natural gas in 2016. Kern River's pipeline system consists of 1,700 miles of natural gas pipelines, includingoperates 1,400 miles of mainline section and 300 miles of common facilities,natural gas pipelines, with a design capacity of 2,166,575 Dth,Dths, or 2.12.2 Bcf, per day. Kern River owns the entireThe mainline section, whichpipeline extends from the system's point of origination near Opal, Wyoming, through the Central Rocky Mountains intoto Daggett, California. The mainline section consists of 1,300 miles of 36-inch diameter pipeline and 100 miles of various laterals that connect to the mainline. The common facilities are jointly owned by Kern River and Mojave Pipeline Company ("Mojave") as tenants-in-common. Except for quantities of natural gas owned for operational purposes, Kern River does not own the natural gas that is transported through its system. Kern River's transportation rates are cost-based. The rates are designed to provide Kern River with an opportunity to recover its costs of providing services and earn a reasonable return on its investments.



33


Kern River's rates are based on a levelized rate design with recovery of 70% of the original investment during the initial long-term contracts ("Period One rates"). After expiration of the initial term, eligible customers have the option to elect service at rates ("Period Two rates") that are lower than Period One rates because they are designed to recover the remaining 30% of the original investment. To the extent that eligible customers electeddo not to contract for service at Period Two rates, the volumes are turned back and sold at market rates for varying terms. As of December 31, 2017, Kern River has sold 212,417 Dth2020, initial Period One contracts total 331,921 Dths per day. Period Two contracts total 1,054,029 Dths per day and 569,631 Dths per day of total turned back volume of 378,503 Dth per day withhas an average remaining contract term of nearly fourmore than two years. The remaining turned back capacity is sold on a short-term basis at market rates. Of the customers that are eligible to take Period Two service beginning May 1, 2018, 40% elected to extend their contracts at maximum Period Two rates, with 233,000 Dth per day electing 10-year contracts and 39,000 Dth per day electing 15-year contracts.


As of December 31, 2017,2020, approximately 87%76% of Kern River's design capacity of 2,166,575 DthDths per day is contracted pursuant to long-term firm natural gas transportation service agreements, whereby Kern River receives natural gas on behalf of customers at designated receipt points and transports the natural gas on a firm basis to designated delivery points. In return for this service, each customer pays Kern River a fixed monthly reservation fee based on each customer's maximum daily quantity, which represents 94%nearly 86% of total operating revenue, and a commodity charge based on the actual amount of natural gas transported pursuant to its long-term firm natural gas transportation service agreements and Kern River's tariff.


These long-term firm natural gas transportation service agreements expire between March 2018April 2022 and April 2033 and have a weighted-average remaining contract term of over nineeight years. Kern River's customers include electric and natural gas distribution utilities, major oil and natural gas companies or affiliates of such companies, electric generating companies, energy marketing and trading companies and financial institutions. As of December 31, 2017, nearly 78%2020, 73% of the firm capacity under contract has primary delivery points in California, with the flexibility to access secondary delivery points in Nevada and Utah. In 2019, Kern River provided approximately 26% of California's demand for natural gas.


During 2017,2020, Kern River had one customer,two customers, including Nevada Power Company, an affiliate company, whod/b/a NV Energy, that each accounted for greater than 10% of its revenue. The loss of thisthese significant customer,customers, if not replaced, could have a material adverse effect on Kern River.


Competition


The Pipeline Companies compete with other pipelines on the basis of cost, flexibility, reliability of service and overall customer service, with the end-user'scustomer's decision being made primarily on the basis of delivered price, which includes both the natural gas commodity cost and its transportation cost.costs. The Pipeline Companies also compete with midstream operators and gas marketers seeking to provide or arrange transportation, storage and other services to meet customer needs. Natural gas also competes with alternative energy sources, including coal, nuclear energy, wind, geothermal, solar and fuel oil.oil and the electricity generated from these alternative energy sources. Legislation and governmental regulations, the weather, the futures market,markets, production costs and other factors beyond the control of the Pipeline Companies, influence the price of the natural gas commodity.

The natural gas industry has undergone a significant shift in supply sources. Production from conventional sources has declined while production from unconventional sources, such as shale gas, has increased. This shift has affected the supply patterns, the flows, the locational and seasonal natural gas price spreads and rates that can be charged on pipeline systems. The impact has varied among pipelines according to the location and the number of competitors attached to these new supply sources.


Electric power generation has been the source of most of the growth in demand for natural gas over the last 10 years, and this trend is expected to continue in the future. The growth of natural gas in this sector is influenced by regulation, new sources of natural gas, competition with other energy sources, primarily coal and renewables, and increased consumption of electricity as a result of economic growth. Short-term market shifts have been driven by relative costs of coal-fueled generation versus natural gas-fueled generation. A long-term market shift away from the use of coal in power generation could be driven by environmental regulations. The future demand for natural gas could be increased by regulations limiting or discouraging coal use. However, Additionally, natural gas demand could potentially be adversely affected by laws mandating or encouragingincenting renewable power sources that produce fewer GHG emissions than natural gas.


The Pipeline Companies generate a substantial portion of their revenue from long-term firm contracts for transportation and storage services and are therefore insulated from competitive factors during the terms of the contracts. When these long-term contracts expire, the Pipeline Companies face competitive pressures from other natural gas pipeline facilities. The Pipeline Companies' ability to extend existing customer contracts, remarket expiring contracted capacity or market new capacity is dependent on competitive alternatives, the regulatory environment and the market supply and demand factors at the relevant dates these contracts are eligible to be renewed or extended. The duration of new or renegotiated contracts will be affected by current commodity and transportation prices, competitive conditions and customers' judgments concerning future market trends and volatility.


Subject to regulatory requirements, the Pipeline Companies attempt to recontract or remarket capacity at the maximum rates allowed under their tariffs, although at times the Pipeline Companies discount these rates to remain competitive. The Pipeline Companies' existing contracts mature at various times and in varying amounts of entitlement. The Pipeline Companies manage the recontracting process to mitigate the risk of a significant negative impact on operating revenue.

Historically, the Pipeline Companies have been able to provide competitively priced services because of access to a variety of relatively low cost supply basins, cost control measures and the relatively high level of firm entitlement that is sold on a seasonal and annual basis, which lowers the per unit cost of transportation. To date, the Pipeline Companies have avoided significant pipeline system bypasses.


BHE GT&S' natural gas transmission operations compete with domestic and Canadian pipeline companies. The combination of reliable and flexible services, access to highly liquid and attractive pricing locations, significant storage capability, availability of numerous receipt and delivery points along its pipeline system and capacity rights held on third party pipelines enable BHE GT&S to tailor its services to meet the needs of individual customers.

34


Northern Natural Gas needs to compete aggressively to serve existing load and add new load. Northern Natural Gas' attractive competitive position relative to other pipelines in the upper Midwest is reinforced each winter as customers expect, and receive, reliable deliveries of natural gas for their critical markets. Northern Natural Gas provides customers access to multiple supply basins that allow customers to obtain reliable supplies at competitive prices, not subject to the natural gas grid dynamics from pipeline competition that would limit customers to a singular supply source. Northern Natural Gas has been successful in competing for a significant amount of the increased demand related to residential and commercial needs and the construction of new power plants and new fertilizer or other industrial plants. The growth related to utilities has historically been driven by population growth and increased commercial and industrial needs. Northern Natural Gas has been generally successful in negotiating increased

Other than the short-term transportation rates for customers who received discounted service when such contract terms are renegotiated and extended.

Northern Natural Gas' major competitors inassociated with the Market Area include ANR Pipeline Company, Northern Border, Natural Gas Pipeline Company of America LLC, Great Lakes and Viking. In the Field Area, where the vast majority of Northern Natural Gas' capacity is used for transportation services provided on a short-term firm basis, Northern Natural Gas competes with a large number of interstate and intrastate pipeline companies.

Northern Natural Gas' attractive competitive position relative to other pipelines in the upper Midwest was reinforced during the colder than normal winter of 2013-2014. Northern Natural Gas' customers' ability to access multiple supply basins has been critical to customers managing their reliability and supply costs. Northern Natural Gas' Field Area has access to diverse Mid-Continent, Permian and Rockies supplies with resulting prices delivered to Market Area customers at Demarcation significantly less than their alternative supply source.

business, Northern Natural Gas expects the current level of Field Area contracting to Demarc to continue in the foreseeable future, as Market Area customers presently need to purchase competitively-priced supplies from the Field Area to support their existing and growth demand requirements. However, the revenue received from these Field Area contracts is expected to vary in relationshipdecrease due to the difference, or "spread," in natural gas prices between the MidContinent and Permian Regions and the priceconstruction of the alternative supplies that are available to Northern Natural Gas' Market Area. This spread affects the value of the Field Area transportation capacity because natural gas from the MidContinent and Permian Regions that is transported through Northern Natural Gas' Field Area competes directly with natural gas delivered directly into the Market Area from Canada and other supply areas, including new shale gas producing areas outside of the Field Area.pipeline facilities.



Kern River competes with various interstate pipelines in developing expansion projects and entering into long-term agreements to serve market growth in Southern California; Las Vegas, Nevada; and Salt Lake City, Utah. Kern River also competes with various interstate pipelines and their customers to market unutilized capacity under shorter term transactions. Kern River provides its customers with supply diversity through interconnections with pipelines such as Northwest Pipeline LLC, Colorado Interstate Gas Company, Overland Trails Transmission, LLC, Questar Pipeline LLC and Questar Overthrust Pipeline LLC; and storage facilities such as Ryckman Creek Resources, LLC and Clear Creek Storage Company, LLC. These interconnections, in addition to the direct interconnections to natural gas processing facilities in Wyoming and California, allow Kern River to access natural gas reserves in Colorado, northwestern New Mexico, Wyoming, Utah, California and the Western Canadian Sedimentary Basin.


Kern River is the only interstate pipeline that presently delivers natural gas directly from the Rocky Mountain gas supply region to end-users in the Southern California market. This enables direct connect customers to avoid paying a "rate stack" (i.e., additional transportation costs attributable to the movement from one or more interstate pipeline systems to an intrastate system within California). Kern River's levelized rate structure and access to upstream pipelines, storage facilities and economic Rocky Mountain gas reserves increasesincrease its competitiveness and attractiveness to end-users. Kern River believes it has an advantage relative to other interstate pipelines serving Southern California because its relatively new pipeline can be economically expanded and has required significantly less capital expenditures and ongoing maintenance than other systems to comply withsystems.

Cove Point's gas transportation, LNG import and storage operations, as well as the Pipeline Safety Improvement Act of 2002. Kern River's favorable market position is tied to the availability of gas reservesLiquefaction Facility's capacity, are contracted primarily under long-term fixed reservation fee agreements. However, in the Rocky Mountain area, an area that in recent years has attracted considerable expansionfuture Cove Point may compete with other independent terminal operators as well as major oil and gas companies on the basis of pipeline capacity serving marketsterminal location, services provided and price. In addition, the Liquefaction Facility may face competition on a global scale as international customers explore other than Southern California and Nevada.options to meet their energy needs.


BHE TRANSMISSION


AltaLinkBHE Canada


ALP,BHE Canada, an indirect wholly owned subsidiary of BHE, acquired on December 1, 2014, isprimarily owns AltaLink, a regulated electric transmission-only utility company headquartered in Alberta, Canada serving approximately 85% of Alberta's population. ALP connects generation plantsAltaLink's high voltage transmission lines and related facilities transmit electricity from generating facilities to major load centers, cities and large industrial plants throughout its 87,000 square mile service territory, which covers a diverse geographic area including most major urban centers in central and southern Alberta. ALP'sAltaLink's transmission facilities, consisting of approximately 8,1008,200 miles of transmission lines and approximately 310 substations as of December 31, 2017,2020, are an integral part of the Alberta IntegratedInterconnected Electric System ("AIES"). BHE Canada also owns MATL Canada L.P., a company headquartered in Alberta, Canada, which operates 82 miles of the 230 kV Montana Alberta Tie Line located in Canada (the entire transmission line runs from Lethbridge, Alberta, Canada to Great Falls, Montana, and connects power grids in the two jurisdictions).


The AIES is a network or grid of transmission facilities operating at high voltages ranging from 69kV69 kVs to 500kV.500 kVs. The grid delivers electricity from generating units across Alberta, Canada through approximately 16,000 miles of transmission.transmission lines. The AIES is interconnected to British Columbia's transmission system that links Alberta with the North American western interconnected system, interconnection with Saskatchewan's transmission system and interconnection with Montana's transmission system.


ALPAltaLink is a transmission facility owner within the electricity industry in Alberta and is permitted to charge a tariff rate for the use of its transmission facilities. Such tariff rates are established on a cost-of-service basis,regulatory model, which areis designed to allow ALPAltaLink an opportunity to recover its costs of providing services and to earn a reasonable return on its investments. Transmission tariffs are approved by the AUC and are collected from the AESO.


The electricity industry in Alberta consists of four principal segments. Generators sell wholesale power into the power pool operated by the AESO and through direct contractual arrangements. Alberta's transmission system or grid is composed of high voltage power lines and related facilities that transmit electricity from generating facilities to distribution networks and directly connected end-users. Distribution facility owners are regulated by the AUC and are responsible for arranging for, or providing, regulated rate and regulated default supply services to convey electricity from transmission systems and distribution-connected generators to end-use customers. Retailers can procure energy through the power pool, through direct contractual arrangements with energy suppliers or ownership of generation facilities and arrange for its distribution to end-use customers.



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The AESO mandate is defined in the Electric Utilities Act (Alberta) and its regulations, and requires the AESO to assess both current and future needs of Alberta's interconnected electrical system. In July 2017,September 2019, the AESO released the 2017 Long-Term2019 Long-term Outlook, ("LTO"), which is athe AESO's forecast of Alberta's load and generation over the next 20 years, and is used as one input to guide the AESO in planning Alberta's transmission system. In January 2018,The 2019 Long-term Outlook includes a Reference Case Scenario, which is the AESO finalizedAESO's main corporate forecast for long-term load growth and made available the 2017 Long-Term Transmission Plan ("LTP").generation development in Alberta, and a set of alternative scenarios that are developed to understand future uncertainties. The 2017 LTP places increased focus on the evolving economy, policy changes and environmental initiatives, including renewable generation additions and the phase-out of coal-fueled generation whenever possible. The plan was developed with the goal of efficient utilization of existing and planned transmission systems in areas where high renewables potential exists, and timely addition of necessary new transmission developments. The AESO has forecastReference Case Scenario forecasts Alberta's electricity demand to grow at an annual rate of 0.9 percent until 2037. Future0.9% over the next 20 years and a total of approximately 13 gigawatts of new generation investmentscapacity to be added for the same period. Other scenarios are expecteddeveloped based on modifying assumptions used in the Reference Case Scenario to keep pace with loadreflect higher cogeneration development, alternative renewable policy, higher economic growth, lower economic growth, and coal-fueled generation replacements,a more diversified Alberta economy. The AESO indicates that it will continue monitoring economic, policy and industry development and if a scenario becomes more likely, the AESO may adopt it as well as generation additions primarily throughits main forecast.

In January 2020, the Renewable Electricity Program.AESO released the 2020 Long-term Transmission Plan. Developed based on a set of broad scenarios, the 2020 Long-term Transmission Plan seeks to optimize the use of Alberta's existing transmission system, and plan development of new transmission in a timely manner to provide for the safe, dependable and efficient delivery of electricity across Alberta. The 2017 LTPAESO recognizes that the electricity industry is changing and therefore it continues to evolve its approach to planning. The 2020 Long-term Transmission Plan identifies 1520 transmission developments across Alberta proposed over the next five years, valued at approximately C$11.4 billion. RegulatoryThese developments are estimated to increase average transmission rates by about C$0.50—C$0.70 per MW hour, starting in 2025. Approximately C$1.0 billion of the transmission developments are in AltaLink's service territory. Each of these developments will still require detailed needs analysis and regulatory approval for all identified developments is still required.prior to proceeding.

BHE U.S. Transmission


BHE U.S. Transmission, a wholly owned subsidiary of BHE, is engaged in various joint ventures to develop, own and operate transmission assets and is pursuing additional investment opportunities in the United States. Currently, BHE U.S. Transmission has two joint ventures with transmission assets that are operational. In May 2020, BHE U.S. Transmission acquired the general partner and limited partner interests in MATL LLP, a U.S based company with 132 line miles in the U.S. of the total 214 mile 230 kV line running from Lethbridge, Alberta, Canada to Great Falls, Montana.


BHE U.S. Transmission indirectly owns a 50% interest in ETT, along with subsidiaries of American Electric Power Company, Inc. ("AEP"). ETT owns and operates electric transmission assets in the ERCOT and, as of December 31, 2017,2020, had total assets of $3.0$3.2 billion. ETT is regulated by the Public Utility Commission of Texas. A total of $2.9 billion of transmission projects were in-service as of December 31, 2017, with $0.2 billion of projects forecast to be completed in 2018 through 2021. ETT's transmission system includes approximately 1,2001,900 miles of transmission lines and 3638 substations as of December 31, 2017.2020.


BHE U.S. Transmission also indirectly owns a 25% interest in Prairie Wind Transmission, LLC, a joint venture with AEP and Westar Energy, Inc., to build, own and operate a 108-mile, 345 kV345-kV transmission project in Kansas. The project cost $158had total assets of $136 million and was fully placed in-service in November 2014.as of December 31, 2020.




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BHE RENEWABLES


The subsidiaries comprising the BHE Renewables reportable segment own interests in several independent power projects that are in-service or under construction in the United States and one in the Philippines. The following table presents certain information concerning these independent power projects as of December 31, 2017:2020:

PowerFacilityNet
PurchaseNetOwned
EnergyYearAgreementPowerCapacityCapacity
Generating FacilityLocationSourceInstalledExpiration
Purchaser(1)
(MWs)(2)
(MWs)(2)
WIND:
Grande PrairieNebraskaWind20162036OPPD400 400 
Jumbo RoadTexasWind20152033AE300 300 
Santa RitaTexasWind20182025-2038KC, CODTX, MES300 300 
Walnut RidgeIllinoisWind20182028USGSA212 212 
Pinyon Pines ICaliforniaWind20122035SCE168 168 
Pinyon Pines IICaliforniaWind20122035SCE132 132 
Bishop Hill IIIllinoisWind20122032Ameren81 81 
MarshallKansasWind20162036MJMEC, KPP, KMEA & COIMO72 72 
1,665 1,665 
SOLAR:
TopazCaliforniaSolar2013-20142039PG&E550 550 
Solar Star 1CaliforniaSolar2013-20152035SCE310 310 
Solar Star 2CaliforniaSolar2013-20152035SCE276 276 
Agua CalienteArizonaSolar2012-20132039PG&E290 142 
Alamo 6TexasSolar20172042CPS110 110 
Community Solar Gardens(6)
MinnesotaSolar2016-20182041-2043(5)98 98 
PearlTexasSolar20172042CPS50 50 
1,684 1,536 
NATURAL GAS:
CordovaIllinoisNatural Gas2001NANA512 512 
Power ResourcesTexasNatural Gas1988NANA212 212 
SaranacNew YorkNatural Gas1994NANA245 196 
YumaArizonaNatural Gas19942024SDG&E50 50 
1,019 970 
GEOTHERMAL:
Imperial Valley ProjectsCaliforniaGeothermal1982-2000(3)(3)345 345 
345 345 
HYDROELECTRIC:
Casecnan Project(4)
PhilippinesHydroelectric20012021NIA150 128 
WailukuHawaiiHydroelectric19932023HELCO10 10 
160 138 
Total Available Generating Capacity4,873 4,654 

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        Power   Facility Net
        Purchase   Net Owned
    Energy   Agreement Power Capacity Capacity
Generating Facility Location Source Installed Expiration 
Purchaser(1)
 
(MW)(2)
 
(MW)(2)
SOLAR:              
Topaz California Solar 2013-2014 2040 PG&E 550
 550
Solar Star 1 California Solar 2013-2015 2035 SCE 310
 310
Solar Star 2 California Solar 2013-2015 2035 SCE 276
 276
Agua Caliente Arizona Solar 2012-2013 2039 PG&E 290
 142
Community Solar Gardens(6)
 Minnesota Solar 2016-2017 2041-2042 (5) 74
 74
Alamo 6 Texas Solar 2017 2042 CPS 110
 110
Pearl Texas Solar 2017 2042 CPS 50
 50
            1,660
 1,512
WIND:              
Bishop Hill II Illinois Wind 2012 2032 Ameren 81
 81
Pinyon Pines I California Wind 2012 2035 SCE 168
 168
Pinyon Pines II California Wind 2012 2035 SCE 132
 132
Jumbo Road Texas Wind 2015 2033 AE 300
 300
Marshall Kansas Wind 2016 2036 MJMEC, KPP, KMEA & COIMO 72
 72
Grand Prairie Nebraska Wind 2016 2036 OPPD 400
 400
            1,153
 1,153
GEOTHERMAL:              
Imperial Valley Projects California Geothermal 1982-2000 (3) (3) 338
 338
               
HYDROELECTRIC:              
Casecnan Project(4)
 Philippines Hydroelectric 2001 2021 NIA 150
 128
Wailuku Hawaii Hydroelectric 1993 2023 HELCO 10
 10
            160
 138
NATURAL GAS:              
Saranac New York Natural Gas 1994 2019 TEMUS 245
 196
Power Resources Texas Natural Gas 1988 2018 EDF 212
 212
Yuma Arizona Natural Gas 1994 2024 SDG&E 50
 50
Cordova Illinois Natural Gas 2001 2019 EGC 512
 512
            1,019
 970
               
Total Available Generating Capacity           4,330
 4,111
               
PROJECTS UNDER CONSTRUCTION:            
               
Community Solar Gardens Minnesota Solar 2018 2043 (5) 24
 24
Walnut Ridge Illinois Wind 2018 2028 USGSA 212
 212
            236
 236
               
            4,566
 4,347
(1)San Diego Gas & Electric Company ("SDG&E"); Pacific Gas and Electric Company ("PG&E"), Ameren Illinois Company ("Ameren"), Southern California Edison ("SCE"), the Philippine National Irrigation Administration ("NIA"); Hawaii Electric Light Company, Inc. ("HELCO"); Austin Energy ("AE"); Omaha Public Power District ("OPPD"); Kimberly-Clark Corporation ("KC"); City of Denton, TX ("CODTX"); MidAmerican Energy Services, LLC ("MES"); U.S. General Services Administration ("USGSA"); Missouri Joint Municipal Electric Commission ("MJMEC"); Kansas Power Pool ("KPP"); Kansas Municipal Energy Agency ("KMEA"); City of Independence, MO ("COIMO"); and CPS Energy ("CPS").

(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates BHE Renewables' ownership of Facility Net Capacity.

(3)Approximately 12% of the Company's interests in the Imperial Valley Projects' Contract Capacity are currently sold to Southern California Edison Company under a long-term power purchase agreement expiring in 2026. Certain long-term power purchase agreement renewals for 252 MWs have been entered into with other parties at fixed prices that expire from 2028 to 2039, of which 202 MWs mature in 2039.
(1)
TransAlta Energy Marketing U.S. ("TEMUS"); EDF Energy Services, LLC ("EDF"); San Diego Gas & Electric Company ("SDG&E"); Exelon Generation Company, LLC ("EGC"); Pacific Gas and Electric Company ("PG&E"), Ameren Illinois Company ("Ameren"), Southern California Edison ("SCE"), the Philippine National Irrigation Administration ("NIA"); Hawaii Electric Light Company, Inc. ("HELCO"); Austin Energy ("AE"); Omaha Public Power District ("OPPD"); U.S. General Services Administration ("USGSA"); Missouri Joint Municipal Electric Commission ("MJMEC"); Kansas Power Pool ("KPP"); Kansas Municipal Energy Agency ("KMEA"); City of Independence, MO ("COIMO"); and CPS Energy ("CPS").
(2)
Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MW) under specified conditions. Net Owned Capacity indicates BHE Renewables' ownership of Facility Net Capacity.
(3)
The majority of the Imperial Valley Projects' Contract Capacity is currently sold to Southern California Edison Company under long-term power purchase agreements expiring in 2018 through 2026. Certain long-term power purchase agreement renewals have been entered into with other parties that begin upon the existing contracts' expiration and expire in 2039.

(4)Under the terms of the agreement with the NIA, CalEnergy Philippines will own and operate the Casecnan project for a 20-year cooperation period which ends December 11, 2021, after which ownership and operation of the project will be transferred to the NIA at no cost on an "as-is" basis. NIA also pays CalEnergy Philippines for delivery of water pursuant to the agreement.
(4)
Under the terms of the agreement with the NIA, CalEnergy Philippines will own and operate the Casecnan project for a 20-year cooperation period which ends December 11, 2021, after which ownership and operation of the project will be transferred to the NIA at no cost on an "as-is" basis. NIA also pays CalEnergy Philippines for delivery of water pursuant to the agreement.

(5)The power purchasers are commercial, industrial and not-for-profit organizations.
(5)The power purchasers are commercial, industrial and not-for-profit organizations.

(6)The community solar gardens project is consolidated in the table above for convenience as it consists of 98 distinct entities that each own an approximately 1-MW solar garden with independent but substantially similar terms and conditions.
(6)The community solar gardens project is consolidated in the table above for convenience as it consists of 74 distinct entities that each own an approximately 1 MW solar garden with independent but substantially similar terms and conditions.


Additionally, BHE Renewables has invested $1.2$6.2 billion in seven32 wind projects sponsored by third parties, commonly referred to as tax equity investments.


The percentages of BHE Renewables' operating revenue is derived from the following business activities for the years ended December 31 (in millions):were as follows:
202020192018
Solar48 %48 %51 %
Wind20 21 18 
Geothermal18 19 19 
Hydro
Natural gas11 10 
Total operating revenue100 %100 %100 %
 2017 2016 2015
      
Solar52% 49% 52%
Wind17
 19
 14
Geothermal19
 20
 23
Hydro6
 4
 3
Natural gas6
 8
 8
Total operating revenue100
 100% 100%


HOMESERVICES


HomeServices, a majority-ownedwholly-owned subsidiary of BHE, is the second-largestlargest residential real estate brokerage firm in the United States. In addition to providing traditional residential real estate brokerage services, HomeServices offers other integrated real estate services, including mortgage originations and mortgage banking; title and closing services; property and casualty insurance; home warranties; relocation services; and other home-related services. HomeServices' real estate brokerage business is subject to seasonal fluctuations because more home sale transactions tend to close during the second and third quarters of the year. As a result, HomeServices' operating results and profitability are typically higher in the second and third quarters relative to the remainder of the year. HomeServices' owned brokerages currently operate in nearly 840900 offices in 30 states and the District of Columbia with nearly 41,000over 43,000 real estate agents under 4246 brand names. The United States residential real estate brokerage business is subject to the general real estate market conditions, is highly competitive and consists of numerous local brokers and agents in each market seeking to represent sellers and buyers in residential real estate transactions. In October 2014, HomeServices acquired the remaining 50.1% of HomeServices Lending, a mortgage origination company.


In October 2012, HomeServices acquired a 66.7% interest in one of the largest residential real estate brokerage franchise networks in the United States, which offers and sells independently owned and operated residential real estate brokerage franchises. The noncontrolling interest member has the right to put the remaining 33.3% interest in the franchise business to HomeServices after March 2015 and HomeServices has the right to call the remaining 33.3% interest in the franchise business after completion and receipt of the 2017 financial statement audit at an option exercise formula based on historical financial performance.


HomeServices' franchise network currently includes over 365approximately 370 franchisees primarily in the United States and internationally in over 1,5001,600 brokerage offices in 47 states with over 48,00053,000 real estate agents under threetwo brand names. In exchange for certain fees, HomeServices provides the right to use the Berkshire Hathaway HomeServices Prudential or Real Living brand names and other related service marks, as well as providing orientation programs, training and consultation services, advertising programs and other services.



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OTHER ENERGY BUSINESSES


Effective January 1, 2016, MidAmerican Energy Company transferred its nonregulated energy operations to MidAmerican Energy Services, LLC ("MES"),MES, a subsidiary of BHE. MES is a nonregulated energy business consisting of competitive electricity and natural gas retail sales. MES' electric operations predominantly include sales to retail customers in Illinois, Ohio, Texas, Ohio,Pennsylvania, Maryland and other states that allow customers to choose their energy supplier. MES' natural gas operations predominantly include sales to retail customers in Iowa and Illinois. Electricity and natural gas are purchased from producers and third partythird-party energy marketing companies and sold directly to commercial, industrial and governmental end-users. MES does not own electricity or natural gas production assets but hedges its contracted sales obligations either with physical supply arrangements or financial products. As of December 31, 2017,2020, MES' contracts in place for the sale of electricity totaled 19,225 GWh16,549 GWhs with a weightedan average lifeterm of 2.12.7 years and for the sale of natural gas totaled 28,605,700 Dth20,655,206 Dths with a weightedan average lifeterm of 1.31.2 years. In addition, MES manages natural gas supplies for a number of smaller commercial end-users, which includes the sale of natural gas to these customers to meet their supply requirements. Refer to Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.


The percentages of electricity sold to MES' retail customers by state for the years ended December 31 were as follows:
 2017 2016 2015
      
Illinois46% 48% 51%
Ohio23
 21
 18
Texas15
 13
 15
Maryland7
 7
 7
Other9
 11
 9
 100% 100% 100%

The percentages of natural gas sold to MES' customers by state for the years ended December 31 were as follows:
 2017 2016 2015
      
Iowa86% 86% 87%
Illinois9
 9
 8
Other5
 5
 5
 100% 100% 100%



GENERAL REGULATION


BHE's regulated subsidiaries and certain affiliates are subject to comprehensive governmental regulation, which significantly influences their operating environment, prices charged to customers, capital structure, costs and, ultimately, their ability to recover costs and earn a reasonable return on invested capital. In addition to the discussion contained herein regarding general regulation, refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion regarding certain regulatory matters.


Domestic Regulated Public Utility Subsidiaries


The Utilities are subject to comprehensive regulation by various state, federal and local agencies. The more significant aspects of this regulatory framework are described below.


State Regulation


Historically, state regulatory commissions have established retail electric and natural gas rates on a cost-of-service basis, which are designed to allow a utility the opportunity to recover what each state regulatory commission deems to be the utility's reasonable costs of providing services, including a fair opportunity to earn a reasonable return on its investments based on its cost of debt and equity. In addition to return on investment, a utility's cost of service generally reflects a representative level of prudent expenses, including cost of sales, operating expense, depreciation and amortization and income and other tax expense, reduced by wholesale electricity and other revenue. The allowed operating expenses are typically based on actual historical costs adjusted for known and measurable or forecasted changes. State regulatory commissions may adjust cost of service for various reasons, including pursuant to a review of: (a) the utility's revenue and expenses during a defined test period, (b) the utility's level of investment and (c) changes in income tax laws. State regulatory commissions typically have the authority to review and change rates on their own initiative; however, they may also initiate reviews at the request of a utility, utility customers or organizations representing groups of customers. In certain jurisdictions, the utility and such parties, however, may agree with one another not to request a review of or changes to rates for a specified period of time.


The retail electric rates of the Utilities are generally based on the cost of providing traditional bundled services, including generation, transmission and distribution services. The Utilities have established energy cost adjustment mechanismsECAMs and other cost recovery mechanisms in certain states, which help mitigate their exposure to changes in costs from those assumed in establishing base rates.


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With certain limited exceptions, the Utilities have an exclusive right to serve retail customers within their service territories and, in turn, have an obligation to provide service to those customers. In some jurisdictions, certain classes of customers may choose to purchase all or a portion of their energy from alternative energy suppliers, and in some jurisdictions retail customers can generate all or a portion of their own energy. Under Oregon law, PacifiCorp has the exclusive right and obligation to provide electricity distribution services to all residential and nonresidential customers within its allocated service territory; however, nonresidential customers have the right to choose an alternative provider of energy supply. The impact of this right on PacifiCorp's consolidated financial results has not been material. In Washington, state law does not provide for exclusive service territory allocation. PacifiCorp's service territory in Washington is surrounded by other public utilities with whom PacifiCorp has from time to time entered into service area agreements under the jurisdiction of the WUTC. Under California law, PacifiCorp has the exclusive right and obligation to provide electricity distribution services to all residential and nonresidential customers within its allocated service territory; however, cities, counties and certain other public agencies have the right to choose to generate energy supply or elect an alternative provider of energy supply through the formation of a Community Choice Aggregator ("CCA"). To date, no CCA activity has occurred in PacifiCorp's California service territory. If a CCA is formed, PacifiCorp would continue to provide CCA customers transmission, distribution, metering and billing services and the CCA would provide generation supply. In addition, PacifiCorp would likely be able to collect costs from CCA customers for the generation-related costs that PacifiCorp incurred while they were customers of PacifiCorp. PacifiCorp would remain the electricity provider of last resort for these customers. In Illinois, state law has established a competitive environment so that all Illinois customers are free to choose their retail service supplier. For customers that choose an alternative retail energy supplier, MidAmerican Energy continues to have an ongoing obligation to deliver the supplier's energy to the retail customer. MidAmerican Energy bills the retail customer for such delivery services. MidAmerican Energy also has an obligation to serve customers at regulated cost-based rates and has a continuing obligation to serve customers who have not selected a competitive electricity provider. The impact of this right on MidAmerican Energy's financial results has not been material. In Nevada, state lawChapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one MW or more to file a letter of intent and application with the PUCN to acquire electric energy and ancillary services from another energy supplier. The law requires customers wishing to choose a new supplier to receive the approval of the PUCN to meet public interest standards. In particular, departing customers must secure new energy resources that are not under contract to the Nevada Utilities, the departure must not burden the Nevada Utilities with increased costs or cause any remaining customers to pay increased costs and the departing customers must pay their portion of any deferred energy balances, all as determined by the PUCN. Also, the Utilities and the state regulatory commissions are individually evaluating how best to integrate private generation resources into their service and rate design, including considering such factors as maintaining high levels of customer safety and service reliability, minimizing adverse cost impacts and fairly allocating costs among all customers.


Also inIn Nevada, large natural gas customers using 12,000 therms per month with fuel switching capability are allowed to participate in the incentive natural gas rate tariff. Once a service agreement has been executed, a customer can compare natural gas prices under this tariff to alternative energy sources and choose its source of natural gas. In addition, natural gas customers using greater than 1,000 therms per day have the ability to secure their own natural gas supplies under the gas transportation tariff.


PacifiCorp


Rate Filings

Under Utah law, the UPSC must issue a written order within 240 days of a public utility's application for a general rate change. Absent an order, the proposed rates go into effect as filed and are not subject to refund, the UPSC may allow interim rates to take effect within 45 days of an application, subject to refund or surcharge, if an adequate prima facie showing is established in hearing that the interim rate change is justified.

The OPUC has the authority to suspend proposed new rates for a period not to exceed more than six months, with an additional three-month extension, beyond the 30-day time period when the new rates would otherwise go into effect. Absent suspension or other action from the OPUC, new rates automatically go into effect 30 days from filing by the utility. Upon suspension by the OPUC, the OPUC is authorized to allow collection of an interim rate, subject to refund, during the pendency of the OPUC's review of the rate request.

In Wyoming, the WPSC can allow interim rates to go into effect 30 days after the initial application but may require a bond to secure a refund for the amount. The WPSC may suspend the rates for final approval for a period not to exceed 10 months.

The WUTC has the authority to suspend proposed new rates, subject to hearing, for a period not to exceed 10 months beyond the 30-day time period when the new rate would otherwise go into effect.

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Under Idaho law, the IPUC can suspend a filing for an initial period not to exceed five months, and an additional extension of 60 days with a showing of good cause.

The CPUC has the authority to suspend proposed new rates, subject to hearing, for a period not to exceed 18 months. The CPUC may extend the suspension period on a case-by-case period.

Adjustment Mechanisms

In addition to recovery through base rates, PacifiCorp also achieves recovery of certain costs through various adjustment mechanisms as summarized below.
State RegulatorBase Rate Test PeriodAdjustment Mechanism
UPSC
Forecasted or historical with known and measurable changes(1)
EBA under which 100% (beginning in June 2016) of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Wheeling revenue is also included in the mechanism. Prior to June 2016,Beginning in 2021, the amount deferred was 70%mechanism includes a true-up of the differencePTCs as noted above.well.
Balancing account to provide for 100% recovery or refund of the difference between the level of REC revenues included in base rates and actual REC revenues after adjusting for a REC incentive authorized by the UPSC.
Recovery mechanism for single capital investments that in total exceed 1% of existing rate base when a general rate case has occurred within the preceding 18 months.
OPUCForecastedEffective January 1, 2021, Wildland Fire Mitigation Balancing Account to recover operating expenses and capital expenditures incurred to implement PacifiCorp's Utah Wildland Fire Protection Plan incremental to those included in base rates.
OPUCForecastedPCAM under which 90% of the difference between forecasted net variable power costs and production tax creditsPTCs established under the annual TAM and actual net variable power costs and production tax creditsPTCs is deferred and reflected in future rates. The difference between the forecasted and actual net variable power costs and production tax creditsPTCs must fall outside of an established asymmetrical deadband, rangewith a negative annual power cost variance deadband of $15 million; and a positive annual power cost variance deadband of $30 million and is also subject to an earnings test.test of +/- 1% on PacifiCorp's allowed return on equity.
Annual TAM based on forecasted net variable power costs and production tax credits. Production tax credits were not included in forecasted net variable power costs prior to 2017.PTCs.
Renewable Adjustment ClauseRAC to recover the revenue requirement of new renewable resources and associated transmission costs that are not reflected in general rates.
Balancing account for proceeds from the sale of RECs.
WPSCEffective January 1, 2021, Annual Wildfire Mitigation and Vegetation Management Cost Recovery Mechanism approved for three years to recover vegetation management and wildfire mitigation operations and maintenance costs and wildfire mitigation capital costs, incremental to those included in base rates. Recovery is subject to performance metrics and earnings tests. After three years, the mechanism will be assessed to determine whether continued use is warranted.
WPSC
Forecasted or historical with known and measurable changes(1)
ECAM under which 70% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Chemical costs and start-up fuel costs are also included in the mechanism starting in 2016.mechanism.
REC and sulfur dioxideSO2 revenue adjustment mechanism to provide for recovery or refund of 100% of any difference between actual REC and sulfur dioxideSO2 revenues and the level in rates.
WUTCHistorical with known and measurable changesPCAM under which the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates after applying a $4 million deadband for positive or negative net power cost variances. For net power cost variances between $4 million and $10 million, amounts to be recovered from customers are allocated 50/50 and amounts to be credited to customers are allocated 75/25 (customers/PacifiCorp). Positive or negative net power cost variances in excess of $10 million are allocated 90/10 (customers/PacifiCorp).
Deferral mechanism of costs for up to 24 months of new base load generation resources and eligible renewable resources and related transmission that qualify under the state's emissions performance standard and are not reflected in base rates.
REC revenue tracking mechanism to provide credit of 100% of Washington-allocated REC revenues.revenues to customers.
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Decoupling mechanism under which the difference between actual annual revenues and authorized revenues per customer is deferred and reflected in future rates, subject to an earnings test. Under the earnings test, 50% of any excess earnings over PacifiCorp's authorized return on equity is returned to customers in addition to any surcharge or surcredit related to the revenue variance. The earnings test is asymmetrical and adjustments are not made when PacifiCorp earns at or below authorized returns on equity. To trigger a rate adjustment, the deferral balance must exceed plus or minus 2.5% of the authorized revenue at the end of each deferral period by rate class. Rate adjustments must not exceed a surcharge of 5% of the actual normalized revenue by class.


IPUCHistorical with known and measurable changesECAM under which 90% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Also provides for recovery or refund of 100% of the difference between the level of REC revenues included in base rates and actual REC revenues and differences in actual production tax creditsPTCs compared to the amount in base rates.
CPUCForecastedPTAM for major capital additions that allows for rate adjustments outside of the context of a traditional general rate case for the revenue requirement associated with capital additions exceeding $50 million on a total-company basis. Filed as eligible capital additions are placed into service.
ECAC that allows for an annual update to actual and forecasted net power costs.
PTAM for attrition, a mechanism that allows for an annual adjustment to costs other than net power costs.

(1)PacifiCorpCatastrophic Events Memorandum Account for catastrophic events, allows for deferral and cost recovery of reasonable costs incurred as the result of catastrophic events, which are events for which a state or federal agency has relied on both historical test periodsdeclared a state of emergency.
Fire Risk Mitigation Memorandum Account to track costs related to wildfire mitigation activities incremental to what is in base rates and Wildfire Mitigation Plan Memorandum Account to track costs associated with known and measurable adjustments, as well as forecasted test periods.the implementation of PacifiCorp's approved wildfire mitigation plan.



(1)PacifiCorp has relied on both historical test periods with known and measurable adjustments, as well as forecasted test periods.

MidAmerican Energy


Rate Filings

Under Iowa law, there are two options for temporary collection of higher rates following the filing of a request for a base rate increase. Collection can begin, subject to refund, either (1) within 10 days of filing, without IUB review, or (2) 90 days after filing, with approval by the IUB, depending upon the ratemaking principles and precedents utilized. In either case, if the IUB has not issued a final order within ten months after the filing date, the temporary rates become final and any difference between the requested rate increase and the temporary rates may then be collected subject to refund until receipt of a final order. Under Illinois law, new base rates may become effective 45 days after the filing of a request with the ICC, or earlier with ICC approval. The ICC has authority to suspend the proposed new rates, subject to hearing, for a period not to exceed approximately eleven months after filing. South Dakota law authorizes the SDPUCSouth Dakota Public Utilities Commission to suspend new base rates for up to six months during the pendency of rate proceedings; however, a utility may implement all or a portion of the proposed new rates six months after the filing of a request for a rate increase subject to refund pending a final order in the proceeding.


Iowa law also permits rate-regulated utilities to seek ratemaking principles with the IUB prior to the construction of certain types of new generating facilities. Pursuant to this law, MidAmerican Energy has applied for and obtained IUB ratemaking principles orders for a 484-MW (MidAmerican Energy's share) coal-fueled generating facility, a 495-MW combined cycle natural gas-fueled generating facility and 6,048 MW6,639 MWs (nominal ratings) of wind-powered generating facilities including 1,666 MW (nominal ratings) under construction, as of December 31, 2017.2020. These ratemaking principles established cost caps for the projects, below which such costs are deemed prudent by the IUB, and authorized a fixed rate of return on equity for the respective generating facilities over the regulatory life of the facilities in any future Iowa rate proceeding. As of December 31, 2017,2020, the generating facilities in service totaled $5.9$8.4 billion, or 42%43%, of MidAmerican Energy's regulated property, plant and equipment, net and were subject to these ratemaking principles at a weighted average return on equity of 11.7%11.4% with a weighted average remaining life of 3133 years.


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Ratemaking principles for several wind-powered generation projects have established mechanisms in Iowa where electric rate base may be reduced. The current revenue sharing mechanism originates from Wind XI and Wind XII ratemaking principles proceedings and reduces rate base for Iowa electric returns on equity exceeding an established benchmark. For 2018, sharing was triggered by MidAmerican Energy's actual equity return being above a threshold calculated annually in accordance with the IUB's 2016 Wind XI order. The threshold, not to exceed 11%, was the weighted average equity return of rate base with returns authorized via ratemaking principles proceedings and all other rate base. For all other rate base, the return is based on interest rates on 30-year A-rated utility bond yields plus 400 basis points, with a minimum return of 9.5%. In 2018 pursuant to this mechanism, MidAmerican Energy shared with customers 100% of the revenue in excess of the trigger. In December 2018, the IUB issued an order approving ratemaking principles related to MidAmerican Energy's Wind XII project. The ratemaking principles continued the revenue sharing mechanism for 2019 and beyond, maintaining the return on equity threshold for sharing and reducing the customer sharing percentage from 100% to 90%. A second mechanism, the retail customer benefit mechanism, reduces electric rate base for the value of higher cost retail energy displaced by covered wind-powered production and applies to the wind-powered generating facilities placed in-service in 2016 under the Wind X project and facilities constructed under the Wind XII project approved by the IUB in 2018. Rate base reductions under these mechanisms are applied to coal and other generation facilities in specified orders.

Adjustment Mechanisms

Under its current Iowa, Illinois and South Dakota electric tariffs, MidAmerican Energy is allowed to recover fluctuations in electric energy costs for its retail electric sales through fuel, or energy, cost adjustment mechanisms. The Iowa mechanism also includes production tax creditsPTCs associated with wind-powered generationgenerating facilities placed in-service prior to 2013, except for production tax creditsPTCs earned by repowered facilities, which totaled 414 MW as of December 31, 2017.facilities. Eligibility for production tax creditsPTCs associated with MidAmerican Energy's earliest projects began expiring in 2014. Facilities currently earning PTCs that benefit customers through the Iowa energy adjustment clause totaled 1,000 MWs (nominal ratings) as of December 31, 2020, with the eligibility of those facilities to earn PTCs expiring by the end of 2022. Additionally, MidAmerican Energy has transmission adjustment clauses to recover certain transmission charges related to retail customers in all jurisdictions. The transmission adjustment mechanisms recover costs billed by the MISO for regional transmission service. The Illinois adjustment mechanism additionally recovers MidAmerican Energy's entire transmission revenue requirement attributable to Illinois. The adjustment mechanisms reduce the regulatory lag for the recovery of energy and transmission costs related to retail electric customers in these jurisdictions.jurisdictions and accomplish, with limited timing differences, a pass-through of the related costs to these customers. Recoveries through these adjustment mechanisms are reflected in operating revenue, and the related costs are reflected in cost of fuel and energy, operations and maintenance expense or income tax benefit, as applicable.


Of the wind-powered generating facilities placed in-service as of December 31, 2017, 2,097 MW2020, 4,670 MWs (nominal ratings) have not been included in the determination of MidAmerican Energy's Iowa retail electric base rates. In accordance with the related ratemaking principles, until such time as these generation assets are reflected in base rates and ceasing thereafter, MidAmerican Energy reducedwill continue to reduce its revenue from Iowa energy adjustment clause recoveries by $5 million in 2015 and $9 million in 2016 and is to reduce its recoveries by $12 million for each calendar year thereafter.year.

MidAmerican Energy has mechanisms in Iowa where rate base may be reduced, including revenue sharing and retail customer benefits attributable to most of the wind-powered generating facilities placed in-service in 2016 ("Wind X"). The revenue sharing mechanism originates from multiple ratemaking principles proceedings and reduces rate base for Iowa electric returns on equity exceeding an established benchmark. The Wind X customer benefit mechanism reduces rate base for the value of higher cost retail energy displaced by Wind X production.


MidAmerican Energy's cost of natural gas purchased for resale is collected for each jurisdiction in its gas rates through a uniform PGA, which is updated monthly to reflect changes in actual costs. Subject to prudence reviews, the PGA accomplishes a pass-through of MidAmerican Energy's cost of natural gas purchased for resale to its customers and, accordingly, has no direct effect on net income.

MidAmerican Energy's DSMelectric and natural gas energy efficiency program costs are collected through separately established ratesbill riders that are adjusted annually based on actual and expected costs asin accordance with the energy efficiency plans filed with and approved by the respective state regulatory commission. As such, recovery of DSMthe energy efficiency program costs, haswhich are reflected in operations and maintenance expense, and related recoveries, which are reflected in operating revenue, have no direct impact on net income.



MidAmerican Energy has income tax rider mechanisms in Iowa and Illinois that were established in response to 2017 Tax Reform, which enacted significant changes to the Internal Revenue Code, including, among other things, a reduction in the United States federal corporate income tax rate from 35% to 21%. South Dakota implemented changes to base rates in response to 2017 Tax Reform. As a result of 2017 Tax Reform, MidAmerican Energy re-measured its accumulated deferred income tax balances at the 21% rate and increased regulatory liabilities pursuant to the approved mechanisms. In December 2018, the IUB approved in final form a tax expense revision mechanism that reduces customer electric rates for the impact of the lower income tax rate on current operations, as calculated annually, and defers the amortization of excess accumulated deferred income taxes created by their re-measurement at the 21% income tax rate to a regulatory liability, the disposition of which will be determined in MidAmerican Energy's next rate case. In 2018, Iowa Senate File 2417 was signed into law, which, among other items, reduces the state of Iowa corporate tax rate from 12% to 9.8% effective in 2021, at which time, the impacts of Iowa Senate File 2417 will be included in the Iowa tax expense revision mechanism.
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NV Energy (Nevada Power and Sierra Pacific)


Rate Filings


Nevada statutes require the Nevada Utilities to file electric general rate cases at least once every three years with the PUCN. Sierra Pacific may also file natural gas general rate cases with the PUCN. The Nevada Utilities are also subject to a two-part fuel and purchased power adjustment mechanism. The Nevada Utilities make quarterly filings to reset BTER,the BTERs, based on the last 12 months of fuel and purchased power costs. The difference between actual fuel and purchased power costs and the revenue collected in the BTERBTERs is deferred into a balancing account. The DEAA rate clears amounts deferred into the balancing account. Nevada regulations allow an electric or natural gas utility that adjusts its BTERBTERs on a quarterly basis to request PUCN approval to make quarterly changes to its DEAA rate if the request is in the public interest. The Nevada Utilities received approval from the PUCN and file quarterly adjustments to the DEAA rate to clear amounts deferred into the balancing account. During required annual DEAA proceedings, the prudence of fuel and purchased power costs is reviewed, and if any costs are disallowed on such grounds, the disallowances will be incorporated into the next quarterly BTER rateBTERs change. Also, on an annual basis, the Nevada Utilities (a) seek a determination that energy efficiency program expenditures were reasonable, (b) request that the PUCN reset base and amortization energy efficiency program rates,EEPR, and (c) request that the PUCN reset base and amortization EEIR.

            EEPR and EEIR

EEPR was established to allow the Nevada Utilities to recover the costs of implementing energy efficiency programs and EEIR was established to offset the negative impacts on revenue associated with the successful implementation rates.of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared by the Nevada Utilities and approved by the PUCN in the IRP proceedings. When the Nevada Utilities' regulatory earned rate of return for a calendar year exceeds the regulatory rate of return used to set base tariff general rates, they are obligated to refund energy efficiency implementation revenue previously collected for that year.


Energy Choice Initiative - Deregulation            Net Metering


In November 2016,Nevada enacted Assembly Bill 405 ("AB 405") on June 15, 2017. The legislation, among other things, established net metering crediting rates for private generation customers with installed net metering systems less than 25 kilowatts. Under AB 405, private generation customers will be compensated at 95% of the rate the customer would have paid for a majoritykilowatt-hour of electricity supplied by the Nevada voters supportedUtilities for the first 80 MWs of cumulative installed capacity of all net metering systems in Nevada, 88% of the rate for the next 80 MWs, 81% of the rate for the next 80 MWs and 75% of the rate for any additional private generation capacity. As of December 31, 2020, the cumulative installed and applied-for capacity of net metering systems under AB 405 in Nevada was 300 MWs.

            Natural Disaster Protection Plan

Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law on May 22, 2019. The legislation requires the Nevada Utilities to submit a ballot measurenatural disaster protection plan to amend Articlethe PUCN. The PUCN adopted natural disaster protection plan regulations on January 29, 2020, that require the Nevada Utilities to file their natural disaster protection plan for approval on or before March 1 of every third year. The regulations also require annual updates to be filed on or before September 1 of the Nevada Constitution. If approved again in 2018,second and third years of the proposed constitutional amendment would requireplan. The plan must include procedures, protocols and other certain information as it relates to the efforts of the Nevada LegislatureUtilities to create,prevent or respond to a fire or other natural disaster. The expenditures incurred by the Nevada Utilities in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with the Nevada Utilities filing an application for recovery on or before July 2023, an open and competitive retail electric market that includes provisions to reduce costs to customers, protect against service disconnections and unfair practices and prohibit the grantingMarch 1 of monopolies and exclusive franchises for the generation of electricity. The outcome of any customer choice initiative could have broad implications to the Nevada Utilities. The Governor issued an executive order establishing the Governor's Committee on Energy Choice in which the Nevada Utilities have representation.each year. The Nevada Utilities have been engaged in the legislative process before the Governor's committee and related proceedings beforesubmitted their initial natural disaster protection plan to the PUCN and the legislature. The Nevada Utilities cannot assess or predict the outcomefiled their first application seeking recovery of the potential constitutional amendment or the financial impact, if any, at this time. The uncertainty created by the ballot initiative complicates both the short-term allocation of resources and long-term resource planning for the Nevada Utilities, including the ability to forecast load growth and the timing of resource additions. This uncertainty in planning is evidenced by a decision the PUCN issued denying Nevada Power's proposed purchase of the South Point Energy Center, citing the unknown outcomes of the Energy Choice Initiative as one of the factors considered in their decision.2019 expenditures on February 28, 2020.


Federal Regulation


The FERC is an independent agency with broad authority to implement provisions of the Federal Power Act, the Natural Gas Act ("NGA"), the Energy Policy Act of 2005 ("Energy Policy Act") and other federal statutes. The FERC regulates rates for wholesale sales of electricity; transmission of electricity, including pricing and regional planning for the expansion of transmission systems; electric system reliability; utility holding companies; accounting and records retention; securities issuances; construction and operation of hydroelectric facilities; and other matters. The FERC also has the enforcement authority to assess civil penalties of up to $1.2$1.3 million per day per violation of rules, regulations and orders issued under the Federal Power Act. The Utilities have implemented programs and procedures that facilitate and monitor compliance with the FERC's regulations described below. MidAmerican Energy is also subject to regulation by the NRC pursuant to the Atomic Energy Act of 1954, as amended ("Atomic Energy Act"), with respect to its ownership interest in the Quad Cities Station.

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Wholesale Electricity and Capacity


The FERC regulates the Utilities' rates charged to wholesale customers for electricityand transmission capacity and related services. Much of the Utilities' wholesale electricity sales and purchases occur under market-based pricing allowed by the FERC and are therefore subject to market volatility. As a result of a 2016 order from the FERC following BHE's acquisition of NV Energy, theThe Utilities are precluded from selling at market-based rates in the PacifiCorp-East, PacifiCorp-West, Nevada Utilities, Idaho Power Company and NorthWestern Energy balancing authority areas. The Utilities had previously relinquished their market-based rate authority in the NV Energy balancing authority area. Wholesale electricity sales in those specific balancing authority areas are permitted at cost-based rates. On October 30, 2017,PacifiCorp and the FERCNevada Utilities have been granted the application of PacifiCorp, Nevada Power and Sierra Pacific for authority to bid into the California EIM at market-based rates.



The Utilities' authority to sell electricity in wholesale electricity markets at market-based rates is subject to triennial reviews conducted by the FERC. Accordingly, the Utilities are required to submit triennial filings to the FERC that demonstrate a lack of market power over sales of wholesale electricity and electric generation capacity in their respective market areas. PacifiCorp, the Nevada Utilities and certain affiliates, representing the BHE Northwest Companies, file together for market power study purposes. The BHE Northwest Companies' most recent triennial filing was made in June 20162019 and as to its non-mitigated balancing authority areas,an order accepting it was approvedissued in November 2017.June 2020. MidAmerican Energy and certain affiliates file together for market power study purposes of the FERC-defined Northeast Region. The most recent triennial filing for the Northeast Region was made in June 20172020 and an order accepting it was issued in January 2018.is under review by the FERC. MidAmerican Energy and certain affiliates file together for market power study purposes of the FERC-defined Central Region. The most recent triennial filing for the Central Region was made in December 20172020 and is currently pending withunder review by the FERC. Under the FERC's market-based rules, the Utilities must also file with the FERC a notice of change in status when there is a change in the conditions that the FERC relied upon in granting market-based rate authority.


Transmission


PacifiCorp's and the Nevada Utilities' wholesale transmission services are regulated by the FERC under cost-based regulation subject to PacifiCorp's and the Nevada Utilities' OATT, respectively.OATT. These services are offered on a non-discriminatory basis, which means that all potential customers are provided an equal opportunity to access the transmission system. PacifiCorp's and the Nevada Utilities' transmission business is managed and operated independently from its wholesale marketing business in accordance with the FERC's Standards of Conduct. PacifiCorp and the Nevada Utilities have made several required compliance filings in accordance with these rules.


In December 2011, PacifiCorp adopted a cost-based formula rate under its OATT for its transmission services. Cost-based formula rates are intended to be an effective means of recovering PacifiCorp's investments and associated costs of its transmission system without the need to file rate cases with the FERC, although the formula rate results are subject to discovery and challenges by the FERC and intervenors. A significant portion of these services are provided to PacifiCorp's energy supply management function.


MidAmerican Energy participates in the MISO as a transmission-owning member. Accordingly, the MISO is the transmission provider under its FERC-approved OATT. While the MISO is responsible for directing the operation of MidAmerican Energy's transmission system, MidAmerican Energy retains ownership of its transmission assets and, therefore, is subject to the FERC's reliability standards discussed below. MidAmerican Energy's transmission business is managed and operated independently from its wholesale marketing business in accordance with the FERC Standards of Conduct.


MidAmerican Energy has approval from the MISO to constructconstructed and ownowns four Multi-Value Projects ("MVPs") located in Iowa and Illinois that will have added approximately 250 miles of 345 kV345-kV transmission line to MidAmerican Energy's transmission system since 2012, of which 224 miles have been placed in-service as of December 31, 2017.2012. The MISO OATT allows for broad cost allocation for MidAmerican Energy's MVPs, including similar MVPs of other MISO participants. Accordingly, a significant portion of the revenue requirement associated with MidAmerican Energy's MVP investments will beis shared with other MISO participants based on the MISO's cost allocation methodology, and a portion of the revenue requirement of the other participants' MVPs will beis allocated to MidAmerican Energy. Additionally, MidAmerican Energy has approval from the FERC to include 100% of construction work in progress in the determination of rates for its MVPs and to use a forward-looking rate structure for all of its transmission investments and costs. The transmission assets and financial results of MidAmerican Energy's MVPs are excluded from the determination of its retail electric rates.


The FERC has established an extensive number of mandatory reliability standards developed by the NERC and the WECC, including planning and operations, critical infrastructure protection and regional standards. Compliance, enforcement and monitoring oversight of these standards is carried out by the FERC; the NERC; and the WECC for PacifiCorp, Nevada Power, and Sierra Pacific; and the Midwest Reliability Organization for MidAmerican Energy.



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Hydroelectric


The FERC licenses and regulates the operation of hydroelectric systems, including license compliance and dam safety programs. Most of PacifiCorp's hydroelectric generating facilities are licensed by the FERC as major systems under the Federal Power Act, and certain of these systems are licensed under the Oregon Hydroelectric Act. Under the Federal Power Act, 17 dams20 developments associated with PacifiCorp's hydroelectric generating facilities licensed with the FERC are classified as "high hazard potential," meaning it is probable in the event of a dam failure that loss of human life in the downstream population could occur. The FERC provides guidelines utilized by PacifiCorp in development of public safety programs consisting of a dam safety program and emergency action plans.



For an update regarding PacifiCorp's Klamath River hydroelectric system, is the only significant hydroelectric system for which PacifiCorp has a pending relicensing process with the FERC. Referrefer to Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 1314 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K for an update regarding hydroelectric relicensing for PacifiCorp's Klamath River hydroelectric system.10-K.


Nuclear Regulatory Commission


General


MidAmerican Energy is subject to the jurisdiction of the NRC with respect to its license and 25% ownership interest in Quad Cities Station. Exelon Generation, the operator and 75% owner of Quad Cities Station, is under contract with MidAmerican Energy to secure and keep in effect all necessary NRC licenses and authorizations.


The NRC regulates the granting of permits and licenses for the construction and operation of nuclear generating stations and regularly inspects such stations for compliance with applicable laws, regulations and license terms. Current licenses for Quad Cities Station provide for operation until December 14, 2032. The NRC review and regulatory process covers, among other things, operations, maintenance and environmental and radiological aspects of such stations. The NRC may modify, suspend or revoke licenses and impose civil penalties for failure to comply with the Atomic Energy Act, the regulations under such Act or the terms of such licenses.


Federal regulations provide that any nuclear operating facility may be required to cease operation if the NRC determines there are deficiencies in state, local or utility emergency preparedness plans relating to such facility, and the deficiencies are not corrected. Exelon Generation has advised MidAmerican Energy that an emergency preparedness plan for Quad Cities Station has been approved by the NRC. Exelon Generation has also advised MidAmerican Energy that state and local plans relating to Quad Cities Station have been approved by the Federal Emergency Management Agency.


The NRC also regulates the decommissioning of nuclear-powered generating facilities, including the planning and funding for the eventual decommissioning of the facilities. In accordance with these regulations, MidAmerican Energy submits a biennial report to the NRC providing reasonable assurance that funds will be available to pay its share of the costs of decommissioning Quad Cities Station. MidAmerican Energy has established a trust for the investment of funds collected for nuclear decommissioning of Quad Cities Station.


Under the Nuclear Waste Policy Act of 1982 ("NWPA"), the U.S. Department of Energy ("DOE")United States DOE is responsible for the selection and development of repositories for, and the permanent disposal of, spent nuclear fuel and high-level radioactive wastes. Exelon Generation, as required by the NWPA, signed a contract with the DOE under which the DOE was to receive spent nuclear fuel and high-level radioactive waste for disposal beginning not later than January 1998. The DOE did not begin receiving spent nuclear fuel on the scheduled date and remains unable to receive such fuel and waste. The costs to be incurred by the DOE for disposal activities were previously being financed by fees charged to owners and generators of the waste. In accordance with a 2013 ruling by the United States Court of Appeals for the District of ColumbiaD.C. Circuit, ("D.C. Circuit"), the DOE, in May 2014, provided notice that, effective May 16, 2014, the spent nuclear fuel disposal fee would be zero. In 2004, Exelon Generation, reached a settlement with the DOE concerning the DOE's failure to begin accepting spent nuclear fuel in 1998. As a result, Quad Cities Station has been billing the DOE, and the DOE is obligated to reimburse the station for all station costs incurred due to the DOE's delay. Exelon Generation has completed construction ofconstructed an interim spent fuel storage installation ("ISFSI") at Quad Cities Station consisting of two pads to store spent nuclear fuel in dry casks in order to free space in the storage pool. The first dry cask was placed in-service in 2005. As of December 31, 2020, the first pad at the ISFSI is full, and the second pad is in operation. The first and second pads at the ISFSI are expected to facilitate storage of casks to support operations at Quad Cities Station until at least 2020. The first storage in a dry cask commenced in November 2005. By 2020, Exelon Generation plans to add a second pad to the ISFSI to accommodate storage of spent nuclear fuel through the end of operations at Quad Cities Station.its operating licenses.
    

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Nuclear Insurance


MidAmerican Energy maintains financial protection against catastrophic loss associated with its interest in Quad Cities Station through a combination of insurance purchased by Exelon Generation, insurance purchased directly by MidAmerican Energy, and the mandatory industry-wide loss funding mechanism afforded under the Price-Anderson Amendments Act of 1988 ("Price-Anderson"), which was amended and extended by the Energy Policy Act. The general types of coverage maintained are: nuclear liability, property damage or loss and nuclear worker liability, as discussed below.



Exelon Generation purchases private market nuclear liability insurance for Quad Cities Station in the maximum available amount of $450 million, which includes coverage for MidAmerican Energy's ownership. In accordance with Price-Anderson, excess liability protection above that amount is provided by a mandatory industry-wide Secondary Financial Protection program under which the licensees of nuclear generating facilities could be assessed for liability incurred due to a serious nuclear incident at any commercial nuclear reactor in the United States. Currently, MidAmerican Energy's aggregate maximum potential share of an assessment for Quad Cities Station is approximately $64$69 million per incident, payable in installments not to exceed $10 million annually.


The insurance for nuclear property damage losses covers property damage, stabilization and decontamination of the facility, disposal of the decontaminated material and premature decommissioning arising out of a covered loss. For Quad Cities Station, Exelon Generation purchases primary and excess property insurance protection for the combined interests in Quad Cities Station, with coverage limits for nuclear damage losses up to $1.5 billion and non-nuclear property damage losses up to $2.1 billion.$500 million. MidAmerican Energy also directly purchases extra expense coverage for its share of replacement power and other extra expenses in the event of a covered accidental outage at Quad Cities Station. The property and related coverages purchased directly by MidAmerican Energy and by Exelon Generation, which includes the interests of MidAmerican Energy, are underwritten by an industry mutual insurance company and contain provisions for retrospective premium assessments to be called upon based on the industry mutual board of directors' discretion for adverse loss experience. Currently, the maximum retrospective amounts that could be assessed against MidAmerican Energy from industry mutual policies for its obligations associated with Quad Cities Station total $9$7 million.


The master nuclear worker liability coverage, which is purchased by Exelon Generation for Quad Cities Station, is an industry-wide guaranteed-cost policy with an aggregate limit of $450 million for the nuclear industry as a whole, which is in effect to cover tort claims of workers in nuclear-related industries.


United States Mine Safety


PacifiCorp's mining operations are regulated by the Federal Mine Safety and Health Administration, which administers federal mine safety and health laws and regulations, and state regulatory agencies. The Federal Mine Safety and Health Administration has the statutory authority to institute a civil action for relief, including a temporary or permanent injunction, restraining order or other appropriate order against a mine operator who fails to pay penalties or fines for violations of federal mine safety standards. Federal law requires PacifiCorp to have a written emergency response plan specific to each underground mine it operates, which is reviewed by the Federal Mine Safety and Health Administration every six months, and to have at least two mine rescue teams located within one hour of each mine. Information regarding PacifiCorp's mine safety violations and other legal matters disclosed in accordance with Section 1503(a) of the Dodd-Frank Reform Act is included in Exhibit 95 to this Form 10-K.


Interstate Natural Gas Pipeline Subsidiaries


The Pipeline Companies are regulated by the FERC, pursuant to the NGA and the Natural Gas Policy Act of 1978. Under this authority, the FERC regulates, among other items, (a) rates, charges, terms and conditions of service, and (b) the construction and operation of interstate pipelines, storage and related facilities, including the extension, expansion or abandonment of such facilities and (c) the construction and operation of LNG import/export facilities. The Pipeline Companies hold certificates of public convenience and necessity and LNG facility authorizations issued by the FERC, which authorize them to construct, operate and maintain their pipeline and related facilities and services.



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FERC regulations and the Pipeline Companies' tariffs allow each of the Pipeline Companies to charge approved rates for the services set forth in their respective tariff.tariffs. Generally, these rates are a function of the cost of providing services to their customers, including prudently incurred operations and maintenance expenses, taxes, depreciation and amortization and a reasonable return on their investments. Both Northern Natural Gas' and Kern River's tariffinvested capital. Tariff rates for each of the Pipeline Companies have been developed under a rate design methodology whereby substantially all of their fixed costs, including a return on invested capital and income taxes, are collected through reservation charges, which are paid by firm transportation and storage customers regardless of volumes shipped. Commodity charges, which are paid only with respect to volumes actually shipped, are designed to recover the remaining, primarily variable, costs. Kern River's reservation rates have historically been approved using a "levelized" cost-of-service methodology so that the rate remains constant over the levelization period. This levelized cost of service has been achieved by using a FERC-approved depreciation schedule in which depreciation increases as interest expensethe cost of capital decreases on declining rate base. Each of the Pipeline Companies also hold authority to negotiate rates for their services, subject to requirements to offer cost-based rate alternatives, and return on equity amounts decrease. Both Northernto publish such negotiated rates.In addition, for services that are not subject to FERC rate jurisdiction pursuant to Section 3 of the Natural Gas' and Kern River'sGas Act, Cove Point charges rates that are established by contract.

The Pipeline Companies' rates are subject to change in future general rate proceedings. Rates for natural gas pipelines are changed by filings under either Section 5 or Section 4 of the Natural Gas Act. Section 5 proceedings are initiated by the FERC or the pipeline's customers for a potential reduction to rates that the FERC finds are no longer just and reasonable. In a Section 5 proceeding, the initiating party has the burden of demonstrating that the currently effective rates of the pipeline are no longer just and reasonable, and of demonstrating alternative just and reasonable rates. Any rate decrease as a result of a Section 5 proceeding is implemented prospectively upon the issuance of a final FERC order adopting the new just and reasonable rates. Section 4 rate proceedings are initiated by the natural gas pipeline, who must demonstrate that the new proposed rates are just and reasonable. The new rates as a result of a Section 4 proceeding are typically implemented six months after the Section 4 filing and are subject to refund upon issuance of a final order by the FERC.


NaturalThe FERC-regulated natural gas transportation companies may not grant any undue preference to any customer. FERC regulations require that certain information be made public for market access, through standardized internet websites.These regulations also restrict each pipeline's marketing affiliates' access to certain non-public information regarding their affiliated interstate natural gas transmission pipelines.that could affect price or availability of service.



Interstate natural gas pipelines are also subject to regulations administered by the Office of Pipeline Safety within the Pipeline and Hazardous Materials Safety Administration, an agency withinof the United States Department of Transportation ("DOT"). Federal pipeline safety regulations are issued pursuant to the Natural Gas Pipeline Safety Act of 1968, as amended ("NGPSA"), which establishes safety requirements in the design, construction, operation and maintenance of interstate natural gas facilities, and requires an entity that owns or operates pipeline facilities to comply with such plans. Major amendments to the NGPSA include the Pipeline Safety Improvement Act of 2002 ("2002 Act"), the Pipeline Inspection, Protection, Enforcement and Safety Act of 2006 ("2006 Act"), the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 ("2011 Act") and the Protecting Our Infrastructure Of Pipelines And Enhancing Safety Act Of 2016 ("2016 Act").


The 2002 Act established additional safety and pipeline integrity regulations for all natural gas pipelines in high-consequence areas. The 2002 Act imposed major new requirements in the areas of operator qualifications, risk analysis and integrity management. The 2002 Act mandated more frequent periodic inspection or testing of natural gas pipelines in high-consequence areas, which are locations where the potential consequences of a natural gas pipeline accident may be significant or may do considerable harm to persons or property. Pursuant to the 2002 Act, the DOT promulgated new regulations that require natural gas pipeline operators to develop comprehensive integrity management programs, to identify applicable threats to natural gas pipeline segments that could impact high-consequence areas, to assess these segments and to provide ongoing mitigation and monitoring. The regulations require recurring inspections of high consequencehigh-consequence area segments every seven years after the initial baseline assessment which was completed by Kern River in early 2011 and Northern Natural Gas in 2012.assessment.


The 2006 Act required pipeline operators to institute human factors management plans for personnel employed in pipeline control centers. DOT regulations published pursuant to the 2006 Act required development and implementation of written control room management procedures.


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The 2011 Act was a response to natural gas pipeline incidents, most notably the San Bruno natural gas pipeline explosion that occurred in September 2010 in California. The 2011 Act increased the maximum allowable civil penalties for violations, directs operator assistance for Federal authorities conducting investigations and authorized the DOT to hire additional inspection and enforcement personnel. The 2011 Act also directed the DOT to study several topics, including the definition of high-consequence areas, the use of automatic shutoff valves in high-consequence areas, expansion of integrity management requirements beyond high-consequence areas and cast iron pipe replacement. The studies are complete, and a number of notices of proposed rulemaking have been issued. The BHE Pipeline Group anticipatesand Hazardous Materials Safety Administration issued the Safety of Gas Transmission Pipelines: MAOP Reconfirmation, Expansion of Assessment Requirements and Other Related Amendments final rules on a numberrule in October 2019. The primary change is the expansion of the pipeline integrity assessment requirements to cover moderate-consequence areas sometime in 2018.and reconfirming maximum allowable operating pressures. Pipeline operators must develop procedures to address assessment requirements and define and map locations by mid-2021 and complete 50% of the required integrity testing by 2028 and the remaining testing by 2034. The BHE Pipeline Group cannot currently assessis assessing the potential costimpact of compliance withthe rule. This is the first of three parts of the anticipated new rules. Additional final rules and regulations under the 2011 Act.are expected in 2021.


The 2016 Actrequired the Pipeline and Hazardous Materials Safety Administration to set federal minimum safety standards for underground natural gas storage facilities and authorized emergency order (interim final rule) authority. TheIn February 2020, the Pipeline and Hazardous Materials Safety Administration issued an interima final rule requiringregarding underground natural gas storage field operators to implement the requirements offacilities that incorporates by reference the American Petroleum Institute ("API")Institute's Recommended Practice 1171, "Functional Integrity of Natural Gas Storage in Depleted Hydrocarbon Reservoirs and Aquifer Reservoirs."Reservoirs", clarifies certain aspects of the mandatory nature of the standard and defines regulatory completion dates for underground storage facility risk assessments. EGTS has 17 underground natural gas storage fields that fall under this regulation and does not expect the impact of complying with the final rule to be significant. Northern Natural Gas has three underground natural gas storage fields whichthat fall under this regulation and has implemented programs to be in full complianceis complying with this regulation.the final rule. Kern River, doesCarolina Gas and Cove Point do not have underground natural gas storage facilities.


The DOT and related state agencies routinely audit and inspect the pipeline facilities for compliance with their regulations. The Pipeline Companies conduct internal audits of their facilities every four years with more frequent reviews of those deemed higher risk. The Pipeline Companies also conduct preliminary audits in advance of agency audits. Compliance issues that arise during these audits or during the normal course of business are addressed on a timely basis. The Pipeline Companies believe their pipeline systems comply in all material respects with the NGPSA and with DOT regulations issued pursuant to the NGPSA.


Northern Powergrid Distribution Companies


The Northern Powergrid Distribution Companies, as holders of electricity distribution licenses, are subject to regulation by GEMA. GEMA regulates distribution network operators ("DNOs") within the terms of the Electricity Act 1989 and the terms of DNO licenses, which are revocable with 25 years notice. Under the Electricity Act 1989, GEMA has a duty to ensure that DNOs can finance their regulated activities and DNOs have a duty to maintain an investment grade credit rating. GEMA discharges certain of its duties through its staff within Ofgem. Each of fourteen licensed DNOs distributes electricity from the national grid transmission system and distribution-connected generators to end users within its respective distribution services area.



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DNOs are subject to price controls, enforced by Ofgem, that limit the revenue that may be recovered and retained from their electricity distribution activities. The regulatory regime that has been applied to electricity distributors in Great Britain encourages companies to look for efficiency gains in order to improve profits. The distribution price control formula also adjusts the revenue received by DNOs to reflect a number of factors, including, but not limited to, the rate of inflation (as measured by the United Kingdom's Retail Prices Index) and the quality of service delivered by the licensee's distribution system. The current price control, Electricity Distribution 1 ("ED1"), has been set for a period of eight years, starting April 1, 2015, although the formula has been, and may be, reviewed by the regulator following public consultation. The procedure and methodology adopted at a price control review are at the reasonable discretion of Ofgem. Ofgem's judgment of the future allowed revenue of licensees is likely to take into account, among other things:
the actual operating and capital costs of each of the licensees;
the operating and capital costs that each of the licensees would incur if it were as efficient as, in Ofgem's judgment, the more efficient licensees;
the actual value of certain costs which are judged to be beyond the control of the licensees;
the taxes that each licensee is expected to pay;
the regulatory value ascribed to the expenditures that have been incurred in the past and the efficient expenditures that are to be incurred in the forthcoming regulatory period;
the rate of return to be allowed on expenditures that make up the regulatory asset value;
the financial ratios of each of the licensees and the license requirement for each licensee to maintain investment grade status;
an allowance in respect of the repair of the pension deficits in the defined benefit pension schemes sponsored by each of the licensees; and
any under- or over-recoveries of revenues, relative to allowed revenues, in the previous price control period.


A number of incentive schemes also operate within the current price control period to encourage DNOs to provide an appropriate quality of service to end users. This includes specified payments to be made for failures to meet prescribed standards of service. The aggregate of these guaranteed standards payments is uncapped, but may be excused in certain prescribed circumstances that are generally beyond the control of the DNOs.


A new price control can be implemented by GEMA without the consent of the DNOs, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's CMA, as can certain other parties. Any appeals must be notified within 20 working days of the license modification by GEMA. If the CMA determines that the appellant has relevant standing, then the statute requires that the CMA complete its process within six months, or in some exceptional circumstances seven months. The Northern Powergrid Distribution Companies appealed Ofgem's proposals for the resetting of the formula that commenced April 1, 2015, as did one other party, and the CMA subsequently revised GEMA's decision.


The current eight-year electricity distribution price control became effectiveperiod runs from April 1, 2015 and is due to terminate onthrough March 31, 2023, and will be immediately replaced with a new2023. The current price control (in line with GEMA's current timetable). This price control iswas the first to be set for electricity distribution in Great Britain since Ofgem completed its review of network regulation (known as the RPI-X @ 20 project). The key changes to the price control calculations, compared to those used in previous price controls are that:
the period over which new regulatory assets are depreciated is being gradually lengthened, from 20 years to 45 years, with the change being phased over eight years;
allowed revenues will be adjusted during the price control period, rather than at the next price control review, to partially reflect cost variances relative to cost allowances;
the allowed cost of debt will be updated within the price control period by reference to a long-run trailing average based on external benchmarks of utility debt costs;
allowed revenues will be adjusted in relation to some new service standard incentives, principally relating to speed and service standards for new connections to the network; and
there iswas scope for a mid-period review and adjustment to revenues in the latter half of the period for any changes in the outputs required of licensees for certain specified reasons.reasons, although GEMA made no adjustments under this provision.



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Under the current price control, as revised by the CMA, and excluding the effects of incentive schemes and any deferred revenues from the prior price control, the opening base allowed revenue of Northern Powergrid (Northeast) Limitedplc and Northern Powergrid (Yorkshire) plc decreased by approximately 1.0% and 0.5%, respectively, from 2015-16 to 2016-17, and then remains constant in all subsequent years within the price control period (RIIO-ED1)(ED1) through 2022-23, before the addition of inflation. Nominal opening base allowed revenues will increase in line with inflation. Adjustments are made annually to recognize the effect of factors such as changes in the allowed cost of debt, performance on incentive schemes and catch up of prior year under- or over- recoveries.


Ofgem also monitors DNO compliance with license conditions and enforces the remedies resulting from any breach of condition. License conditions include the prices and terms of service, financial strength of the DNO, the provision of information to Ofgem and the public, as well as maintaining transparency, non-discrimination and avoidance of cross-subsidy in the provision of such services. Ofgem also monitors and enforces certain duties of a DNO set out in the Electricity Act 1989, including the duty to develop and maintain an efficient, coordinated and economical system of electricity distribution. Under changes to the Electricity Act 1989 introduced by the Utilities Act 2000, GEMA is able to impose financial penalties on DNOs that contravene any of their license duties or certain of their duties under the Electricity Act 1989, as amended, or that are failing to achieve a satisfactory performance in relation to the individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the licensee's revenue.


ALP TransmissionAltaLink


ALPAltaLink is regulated by the AUC, pursuant to the Electric Utilities Act (Alberta), the Public Utilities Act (Alberta), the Alberta Utilities Commission Act (Alberta) and the Hydro and Electric Energy Act (Alberta). The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including ALP,AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems. The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of ALP'sAltaLink's activities, including its tariffs, rates, construction, operations and financing.


The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements, capital expenditure prudency and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable, and approval of the transmission tariff rates of regulated transmission providers paid by the AESO, which is the independent transmission system operator in Alberta, Canada that controls the operation of ALP'sAltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulation and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.


ALP'sAltaLink's tariffs are regulated by the AUC under the provisions of the Electric Utilities Act (Alberta) in respect of rates and terms and conditions of service. The Electric Utilities Act (Alberta) and related regulations require the AUC to consider that it is in the public interest to provide consumers the benefit of unconstrained transmission access to competitive generation and the wholesale electricity market. In regulating transmission tariffs, the AUC must facilitate sufficient investment to ensure the timely upgrade, enhancement or expansion of transmission facilities, and foster a stable investment climate and a continued stream of capital investment for the transmission system.


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Under the Electric Utilities Act ALP(Alberta), AltaLink prepares and files applications with the AUC for approval of tariffs to be paid by the AESO for the use of its transmission facilities, and the terms and conditions governing the use of those facilities. The AUC reviews and approves such tariff applications based on a cost-of-service regulatory model under a forward test year basis. Under this model, the AUC provides ALPAltaLink with a reasonable opportunity to (i) earn a fair return on equity; and (ii) recover its forecast costs, including operating expenses, depreciation, borrowing costs and taxes (including deemed income taxes) associated with its regulated transmission business. The AUC must approve tariffs that are just, reasonable and not unduly preferential, arbitrary or unjustly discriminatory. ALP'sAltaLink's transmission tariffs are not dependent on the price or volume of electricity transported through its transmission system.



The AESO is an independent system operator in Alberta, Canada that oversees the AIESAlberta Interconnected Electric System ("AIES") and wholesale electricity market. The AESO is responsible for directing the safe, reliable and economic operation of the AIES, including long-term transmission system planning. ALPAltaLink and the other transmission facility owners receive substantially all of their transmission tariff revenues from the AESO. The AESO, in turn, charges wholesale tariffs, approved by the AUC, in a manner that promotes fair and open access to the AIES and facilitates a competitive market for the purchase and sale of electricity. The AESO monitors compliance with approved reliability standards, which are enforced by the Market Surveillance Administrator, which may impose penalties on transmission facility owners for non-compliance with the approved reliability standards.


The AESO determines the need and plans for the expansion and enhancement of a congestion freethe transmission system in Alberta in accordance with applicable law and reliability standards. The AESO's responsibilities include long-term transmission planning and management, including assessing and planning for the current and future transmission system capacity needs of the AESO market participants. When the AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application to the AUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an application to the AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the geographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that certain transmission projects may be subject to a competitive process open to qualified bidders.


Independent Power ProjectsMidAmerican Energy


MidAmerican Energy, an indirect wholly owned subsidiary of BHE, is a United States regulated electric and natural gas utility company headquartered in Iowa that serves 0.8 million retail electric customers in portions of Iowa, Illinois and South Dakota and 0.8 million retail and transportation natural gas customers in portions of Iowa, South Dakota, Illinois and Nebraska. MidAmerican Energy is principally engaged in the business of generating, transmitting, distributing and selling electricity and in distributing, selling and transporting natural gas. MidAmerican Energy's service territory covers approximately 11,000 square miles. Metropolitan areas in which MidAmerican Energy distributes electricity at retail include Council Bluffs, Des Moines, Fort Dodge, Iowa City, Sioux City and Waterloo, Iowa; and the Quad Cities (Davenport and Bettendorf, Iowa and Rock Island, Moline and East Moline, Illinois). Metropolitan areas in which it distributes natural gas at retail include Cedar Rapids, Des Moines, Fort Dodge, Iowa City, Sioux City and Waterloo, Iowa; the Quad Cities; and Sioux Falls, South Dakota. MidAmerican Energy has a diverse customer base consisting of urban and rural residential customers and a variety of commercial and industrial customers. Principal industries served by MidAmerican Energy include electronic data storage; processing and sales of food products; manufacturing, processing and fabrication of primary metals, farm and other non-electrical machinery; cement and gypsum products; and government. In addition to retail sales and natural gas transportation, MidAmerican Energy sells electricity principally to markets operated by RTOs and natural gas to other utilities and market participants on a wholesale basis. MidAmerican Energy is a transmission-owning member of the MISO and participates in its capacity, energy and ancillary services markets.

MidAmerican Energy's regulated electric and natural gas operations are conducted under numerous franchise agreements, certificates, permits and licenses obtained from federal, state and local authorities. The franchise agreements, with various expiration dates, are typically for 20- to 25-year terms. Several of these franchise agreements give either party the right to seek amendment to the franchise agreement at one or two specified times during the term. MidAmerican Energy generally has an exclusive right to serve electric customers within its service territories and, in turn, has an obligation to provide electricity service to those customers. In return, the state utility commissions have established rates on a cost-of-service basis, which are designed to allow MidAmerican Energy an opportunity to recover its costs of providing services and to earn a reasonable return on its investment. In Illinois, MidAmerican Energy's regulated retail electric customers may choose their energy supplier.


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The Yuma, Cordova, Saranac,percentages of MidAmerican Energy's operating revenue and operating income derived from the following business activities for the years ended December 31 were as follows:
202020192018
Operating revenue:
Regulated electric79 %76 %75 %
Regulated gas21 23 25 
Other— — 
100 %100 %100 %
Operating income:
Regulated electric86 %86 %85 %
Regulated gas14 13 15 
Other— — 
100 %100 %100 %

MidAmerican Energy was incorporated under the laws of the state of Iowa in 1995 and its principal executive offices are located at 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580, its telephone number is (515) 242-4300 and its internet address is www.midamericanenergy.com.

Regulated Electric Operations

Customers

The GWhs and percentages of electricity sold to MidAmerican Energy's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Iowa24,425 92 %24,073 92 %23,670 92 %
Illinois1,847 1,894 1,944 
South Dakota251 234 237 
26,523 100 %26,201 100 %25,851 100 %


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Electricity sold to MidAmerican Energy's retail and wholesale customers by class of customer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
GWhs sold:
Residential6,687 18 %6,575 18 %6,763 18 %
Commercial3,707 10 3,921 11 3,897 11 
Industrial14,645 39 14,127 39 13,587 37 
Other1,484 1,578 1,604 
Total retail26,523 71 26,201 72 25,851 70 
Wholesale11,219 29 10,000 28 11,181 30 
Total GWhs sold37,742 100 %36,201 100 %37,032 100 %
Average number of retail customers (in thousands):
Residential682 86 %675 86 %670 86 %
Commercial97 12 95 12 94 12 
Industrial— — — 
Other14 14 14 
Total795 100 %786 100 %780 100 %

Variations in weather, economic conditions and various conservation and energy efficiency measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.

There are seasonal variations in MidAmerican Energy's electricity sales that are principally related to weather and the related use of electricity for air conditioning. Additionally, electricity sales are priced higher in the summer months compared to the remaining months of the year. As a result, 40% to 50% of MidAmerican Energy's regulated electric retail revenue is reported in the months of June, July, August and September.

A degree of concentration of sales exists with certain large electric retail customers. Sales to the ten largest customers, from a variety of industries, comprised 23%, 21% and 20% of total retail electric sales in 2020, 2019 and 2018, respectively. Sales to electronic data storage customers included in the ten largest customers comprised 16%, 12% and 9% of total retail electric sales in 2020, 2019 and 2018, respectively.

The annual hourly peak demand on MidAmerican Energy's electric system usually occurs as a result of air conditioning use during the cooling season. Peak demand represents the highest demand on a given day and at a given hour. On July 8, 2020, retail customer usage of electricity caused an hourly peak demand of 5,035 MWs on MidAmerican Energy's electric distribution system, which is 60 MWs less than the record hourly peak demand of 5,095 MWs set July 19, 2019.

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Generating Facilities and Fuel Supply

MidAmerican Energy has ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding MidAmerican Energy's owned generating facilities as of December 31, 2020:
FacilityNet
Year Installed /Net CapacityOwned Capacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
WIND:
Ida GroveIda Grove, IAWind2016-2019500 500 
OrientGreenfield, IAWind2018-2019500 500 
HighlandPrimghar, IAWind2015475 475 
Rolling HillsMassena, IAWind2011443 443 
Beaver CreekOgden, IAWind2017-2018340 340 
North EnglishMontezuma, IAWind2018-2019340 340 
Palo AltoPalo Alto, IAWind2019-2020340 340 
Arbor HillGreenfield, IAWind2018-2020310 310 
PomeroyPomeroy, IAWind2007-2011 / 2018-2019286 286 
Diamond TrailLadora, IAWind2020250 250 
LundgrenOtho, IAWind2014250 250 
O'BrienPrimghar, IAWind2016250 250 
CenturyBlairsburg, IAWind2005-2008 / 2017-2018200 200 
EclipseAdair, IAWind2012200 200 
IntrepidSchaller, IAWind2004-2005 / 2017176 176 
AdairAdair, IAWind2008 / 2019-2020175 175 
PrairieMontezuma, IAWind2017-2018169 169 
Southern HillsOrient, IAWind2020163 163 
CarrollCarroll, IAWind2008 / 2019150 150 
WalnutWalnut, IAWind2008 / 2019150 150 
ViennaGladbrook, IAWind2012-2013150 150 
AdamsLennox, IAWind2015150 150 
WellsburgWellsburg, IAWind2014139 139 
LaurelLaurel, IAWind2011120 120 
MacksburgMacksburg, IAWind2014119 119 
ContrailBraddyville, IAWind2020110 110 
Morning LightAdair, IAWind2012100 100 
VictoryWestside, IAWind2006 / 2017-201899 99 
IvesterWellsburg, IAWind201890 90 
Pocahontas Prairie(3)
Pomeroy, IAWind202080 80 
Charles CityCharles City, IAWind2008 / 201875 75 
6,899 6,899 
COAL:
LouisaMuscatine, IACoal1983744 655 
Walter Scott, Jr. Unit No. 3Council Bluffs, IACoal1978702 556 
Walter Scott, Jr. Unit No. 4Council Bluffs, IACoal2007819 489 
OttumwaOttumwa, IACoal1981720 374 
George Neal Unit No. 3Sergeant Bluff, IACoal1975506 364 
George Neal Unit No. 4Salix, IACoal1979653 265 
4,144 2,703 
NATURAL GAS AND OTHER:
Greater Des MoinesPleasant Hill, IAGas2003-2004485 485 
ElectrifarmWaterloo, IAGas or Oil1975-1978187 187 
Pleasant HillPleasant Hill, IAGas or Oil1990-1994156 156 
SycamoreJohnston, IAGas or Oil1974147 147 
River HillsDes Moines, IAGas1966-1967118 118 
Riverside Unit No. 5(4)
Bettendorf, IAGas1961117 117 
CoralvilleCoralville, IAGas197066 66 
MolineMoline, ILGas197064 64 
28 portable power modulesVariousOil200056 56 
ParrCharles City, IAGas196933 33 
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FacilityNet
Year Installed /Net CapacityOwned Capacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
1,429 1,429 
NUCLEAR:
Quad Cities Unit Nos. 1 and 2Cordova, ILUranium19721,815 454 
HYDROELECTRIC:
Moline Unit Nos. 1-4Moline, ILHydroelectric1941
Total Available Generating Capacity14,291 11,489 
PROJECTS UNDER CONSTRUCTION:
Various wind projects87 87 
14,378 11,576 
(1)Repowered dates are associated with component replacements on existing wind-powered generating facilities commonly referred to by the Internal Revenue Service ("IRS") as repowering. IRS rules provide for re-establishment of the PTCs for an existing wind-powered generating facility upon the replacement of a significant portion of its components. If the degree of component replacement in such projects meets IRS guidelines, PTCs are re-established for ten years at rates that depend upon the date on which construction begins.
(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates MidAmerican Energy's ownership of Facility Net Capacity.
(3)The Pocahontas Prairie was acquired in 2020 and is currently not eligible to earn federal renewable electricity PTCs.
(4)Riverside Unit No. 5 was retired in January 2021.

The following table shows the percentages of MidAmerican Energy's total energy supplied by energy source for the years ended December 31:
202020192018
Wind and other renewable(1)
54 %44 %36 %
Coal19 33 42 
Nuclear10 10 10 
Natural gas
Total energy generated85 88 90 
Energy purchased - short-term contracts and other14 10 
Energy purchased - long-term contracts (renewable)(1)
Energy purchased - long-term contracts (non-renewable)— 
100 %100 %100 %

(1)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.

MidAmerican Energy is required to have resources available for dispatch by MISO to continuously meet its customer needs and reliably operate its electric system. The percentage of MidAmerican Energy's energy supplied by energy source varies from year to year and is subject to numerous operational and economic factors such as planned and unplanned outages, fuel commodity prices, fuel transportation costs, weather, environmental considerations, transmission constraints, and wholesale market prices of electricity. MidAmerican Energy evaluates these factors continuously in order to facilitate economical dispatch of its generating facilities by MISO. When factors for one energy source are less favorable, MidAmerican Energy places more reliance on other energy sources. For example, MidAmerican Energy can generate more electricity using its low cost wind-powered generating facilities when factors associated with these facilities are favorable. When factors associated with wind resources are less favorable, MidAmerican Energy must increase its reliance on more expensive generation or purchased electricity. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction.


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Wind

MidAmerican Energy owns more wind-powered generating capacity than any other United States rate-regulated electric utility and believes wind-powered generation offers a viable, economical and environmentally prudent means of supplying electricity and complying with laws and regulations. Pursuant to ratemaking principles approved by the IUB, facilities accounting for 96% of MidAmerican Energy's wind-powered generating capacity in-service at December 31, 2020, are authorized to earn over their regulatory lives a fixed rate of return on equity ranging from 11.0% to 12.2% on the depreciated cost of their original construction, which excludes the cost of later replacements, in any future Iowa rate proceeding. MidAmerican Energy's wind-powered generating facilities, including those facilities where a significant portion of the equipment was replaced, commonly referred to as repowered facilities, are eligible for federal renewable electricity PTCs for 10 years from the date the facilities are placed in-service. PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold. PTCs for MidAmerican Energy's wind-powered generating facilities currently in-service began expiring in 2014, with final expiration in 2030. Since 2014, MidAmerican Energy has repowered, or plans to repower, 2,310 MWs of wind-powered generating facilities for which PTCs have expired or will expire by the end of 2022. MidAmerican Energy anticipates energy generation from the repowered facilities will increase between 19% and 30% depending upon the technology being repowered.

Of the 6,998 MWs of wind-powered generating facilities in-service as of December 31, 2020, 6,866 MWs were generating PTCs, including 1,275 MWs of repowered facilities. PTCs earned by MidAmerican Energy's wind-powered generating facilities placed in-service prior to 2013, except for repowered facilities, are included in MidAmerican Energy's Iowa energy adjustment clause, through which MidAmerican Energy is allowed to recover fluctuations in its electric retail energy costs. Facilities earning PTCs that currently benefit customers through the Iowa energy adjustment clause totaled 1,000 MWs (nominal ratings) as of December 31, 2020, with the eligibility of those facilities to earn PTCs expiring by the end of 2022. MidAmerican Energy earned PTCs totaling $510 million and $378 million in 2020 and 2019, respectively, of which 15% and 19%, respectively, were included in the Iowa energy adjustment clause.

Coal

All of the coal-fueled generating facilities operated by MidAmerican Energy are fueled by low-sulfur, western coal from the Powder River Basin in northeast Wyoming. MidAmerican Energy's coal supply portfolio includes multiple suppliers and mines under short-term and multi-year agreements of varying terms and quantities through 2023. MidAmerican Energy believes supplies from these sources are presently adequate and available to meet MidAmerican Energy's needs. MidAmerican Energy's coal supply portfolio has substantially all of its expected 2021 requirements under fixed-price contracts. MidAmerican Energy regularly monitors the western coal market for opportunities to enhance its coal supply portfolio.

MidAmerican Energy has a multi-year long-haul coal transportation agreement with BNSF Railway Company ("BNSF"), an affiliate company, for the delivery of coal to all of the MidAmerican Energy-operated coal-fueled generating facilities other than the George Neal Energy Center. Under this agreement, BNSF delivers coal directly to MidAmerican Energy's Walter Scott, Jr. Energy Center and to an interchange point with Canadian Pacific Railway Company for short-haul delivery to the Louisa Energy Center. MidAmerican Energy has a multi-year long-haul coal transportation agreement with Union Pacific Railroad Company for the delivery of coal to the George Neal Energy Center.

Nuclear

MidAmerican Energy is a 25% joint owner of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station"), a nuclear power plant, which is currently licensed by the NRC for operation until December 14, 2032. Exelon Generation Company, LLC ("Exelon Generation"), a subsidiary of Exelon Corporation, is the 75% joint owner and the operator of Quad Cities Station. Approximately one-third of the nuclear fuel assemblies in each reactor core at Quad Cities Station is replaced every 24 months. MidAmerican Energy has been advised by Exelon Generation that the following requirements for Quad Cities Station can be met under existing supplies or commitments: uranium requirements through 2025 and partial requirements through 2030; uranium conversion requirements through 2028 and partial requirements through 2031; enrichment requirements through 2027 and partial requirements through 2031; and fuel fabrication requirements through 2028. MidAmerican Energy has been advised by Exelon Generation that it does not anticipate it will have difficulty in contracting for uranium, uranium conversion, enrichment or fabrication of nuclear fuel needed to operate Quad Cities Station during these time periods. In reaction to concerns about the profitability of Quad Cities Station and Exelon Generation's ability to continue its operation, in December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Resources, Topaz, Agua Caliente, Solar Star, Bishop HillAgency to purchase ZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the ZECs will provide Exelon Generation additional revenue through 2027 as an incentive for continued operation of Quad Cities Station.

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        Natural Gas and Other

MidAmerican Energy uses natural gas and oil as fuel for intermediate and peak demand electric generation, igniter fuel, transmission support and standby purposes. These sources are presently in adequate supply and available to meet MidAmerican Energy's needs.

        Regional Transmission Organizations

MidAmerican Energy sells and purchases electricity and ancillary services related to its generation and load in wholesale markets pursuant to the tariffs in those markets. MidAmerican Energy participates predominantly in the MISO energy and ancillary service markets, which provide MidAmerican Energy with wholesale opportunities over a large market area. MidAmerican Energy can enter into wholesale bilateral transactions in addition to market activity related to its assets. MidAmerican Energy is authorized to participate in the Southwest Power Pool, Inc. and PJM Interconnection, L.L.C. ("PJM") markets and can contract with several other major transmission-owning utilities in the region. MidAmerican Energy can utilize both financial swaps and physical fixed-price electricity sales and purchases contracts to reduce its exposure to electricity price volatility.

MidAmerican Energy's decisions regarding additions to or reductions of its generation portfolio may be impacted by the MISO's minimum reserve margin requirement. The MISO requires each member to maintain a minimum reserve margin of its accredited generating capacity over its peak demand obligation based on the member's load forecast filed with the MISO each year. The MISO's reserve requirement was 8.9% for the summer of 2020 and will increase to 9.4% for the summer of 2021. MidAmerican Energy's owned and contracted capacity accredited for the 2020-2021 MISO capacity auction was 5,471 MWs compared to a peak demand obligation of 4,830 MWs, or a reserve margin of 13.3%. Accredited capacity represents the amount of generation available to meet the requirements of MidAmerican Energy's retail customers and consists of MidAmerican Energy-owned generation, interruptible retail customer load, certain customer private generation that MidAmerican Energy is contractually allowed to dispatch and the net amount of capacity purchases and sales, excluding sales into the MISO annual capacity auction. Accredited capacity may vary significantly from the nominal, or design, capacity ratings, particularly for wind turbines whose output is dependent upon wind levels at any given time. Additionally, the actual amount of generating capacity available at any time may be less than the accredited capacity due to regulatory restrictions, transmission constraints, fuel restrictions and generating units being temporarily out of service for inspection, maintenance, refueling, modifications or other reasons.

Transmission and Distribution

MidAmerican Energy's transmission and distribution systems included 4,600 circuit miles of transmission lines in four states, 25,000 circuit miles of distribution lines and 340 substations as of December 31, 2020. Electricity from MidAmerican Energy's generating facilities and purchased electricity is delivered to wholesale markets and its retail customers via the transmission facilities of MidAmerican Energy and others. MidAmerican Energy participates in the MISO capacity, energy and ancillary services markets as a transmission-owning member and, accordingly, operates its transmission assets at the direction of the MISO. The MISO manages its energy and ancillary service markets using reliability-constrained economic dispatch of the region's generation. For both the day-ahead and real-time (every five minutes) markets, the MISO analyzes generation commitments to provide market liquidity and transparent pricing while maintaining transmission system reliability by minimizing congestion and maximizing efficient energy transmission. Additionally, through its FERC-approved OATT, the MISO performs the role of transmission service provider throughout the MISO footprint and administers the long-term planning function. MISO and related costs of the participants are shared among the participants through a number of mechanisms in accordance with the MISO tariff.

Regulated Natural Gas Operations

MidAmerican Energy is engaged in the distribution of natural gas to customers in its service territory and the related procurement, transportation and storage of natural gas for the benefit of those customers. MidAmerican Energy purchases natural gas from various suppliers and contracts with interstate natural gas pipelines for transportation of the gas to MidAmerican Energy's service territory and for storage and balancing services. MidAmerican Energy sells natural gas and delivery services to end-use customers on its distribution system; sells natural gas to other utilities, municipalities and energy marketing companies; and transports natural gas through its distribution system for end-use customers who have independently secured their supply of natural gas. During 2020, 58% of the total natural gas delivered through MidAmerican Energy's distribution system was associated with transportation service.

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Natural gas property consists primarily of natural gas mains and service lines, meters, and related distribution equipment, including feeder lines to communities served from natural gas pipelines owned by others. The natural gas distribution facilities of MidAmerican Energy included 24,100 miles of natural gas main and service lines as of December 31, 2020.

Customer Usage and Seasonality

The percentages of natural gas sold to MidAmerican Energy's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Iowa76 %76 %76 %
South Dakota13 13 13 
Illinois10 10 10 
Nebraska
100 %100 %100 %

The percentages of natural gas sold to MidAmerican Energy's retail and wholesale customers by class of customer, total Dths of natural gas sold, total Dths of transportation service and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Residential45 %45 %43 %
Commercial(1)
20 22 21 
Industrial(1)
Total retail70 71 69 
Wholesale(2)
30 29 31 
100 %100 %100 %
Total Dths of natural gas sold (in thousands)114,399125,655126,272
Total Dths of transportation service (in thousands)110,263112,143102,198
Total average number of retail customers (in thousands)774766759

(1)Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers that use natural gas principally for heating. Industrial customers are non-residential customers that use natural gas principally for their manufacturing processes.
(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

There are seasonal variations in MidAmerican Energy's regulated natural gas business that are principally due to the use of natural gas for heating. Typically, 50-60% of MidAmerican Energy's regulated retail natural gas revenue is reported in the months of January, February, March and December.

On January 29, 2019, MidAmerican Energy recorded its all-time highest peak-day delivery through its distribution system of 1,314,526 Dths. This peak-day delivery consisted of 68% traditional retail sales service and 32% transportation service. MidAmerican Energy's 2020/2021 winter heating season peak-day delivery as of February 23, 2021, was 1,243,237 Dths, reached on February 14, 2021. This preliminary peak-day delivery consisted of 72% traditional retail sales service and 28% transportation service.


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Natural Gas Supply and Capacity

MidAmerican Energy uses several strategies designed to maintain a reliable natural gas supply and reduce the impact of volatility in natural gas prices on its regulated retail natural gas customers. These strategies include the purchase of a geographically diverse supply portfolio from producers and third-party energy marketing companies, the use of interstate pipeline storage services and MidAmerican Energy's LNG peaking facilities, and the use of financial derivatives to fix the price on a portion of the anticipated natural gas requirements of MidAmerican Energy's customers. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of the PGAs.

MidAmerican Energy contracts for firm natural gas pipeline capacity to transport natural gas from key production areas and liquid market centers to its service territory through direct interconnects to the pipeline systems of several interstate natural gas pipeline systems, including Northern Natural Gas, an affiliate company. MidAmerican Energy has multiple pipeline interconnections into several larger markets within its distribution system. Multiple pipeline interconnections create competition among pipeline suppliers for transportation capacity to serve those markets, thus reducing costs. In addition, multiple pipeline interconnections increase delivery reliability and give MidAmerican Energy the ability to optimize delivery of the lowest cost supply from the various production areas and liquid market centers into these markets. Benefits to MidAmerican Energy's distribution system customers are shared among all jurisdictions through a consolidated PGA.

At times, the natural gas pipeline capacity available through MidAmerican Energy's firm capacity portfolio may exceed the requirements of retail customers on MidAmerican Energy's distribution system. Firm capacity in excess of MidAmerican Energy's system needs can be released to other companies to achieve optimum use of the available capacity. Past IUB and South Dakota Public Utilities Commission ("SDPUC") rulings have allowed MidAmerican Energy to retain 30% of the respective jurisdictional revenue on the resold capacity, with the remaining 70% being returned to customers through the PGAs.

MidAmerican Energy utilizes interstate pipeline natural gas storage services to meet retail customer requirements, manage fluctuations in demand due to changes in weather and other usage factors and manage variation in seasonal natural gas pricing. MidAmerican Energy typically withdraws natural gas from storage during the heating season when customer demand is historically at its peak and injects natural gas into storage during off-peak months when customer demand is historically lower. MidAmerican Energy also utilizes its three LNG facilities to meet peak day demands during the winter heating season. Interstate pipeline storage services and MidAmerican Energy's LNG facilities reduce dependence on natural gas purchases during the volatile winter heating season and can deliver a significant portion of MidAmerican Energy's anticipated retail sales requirements on a peak winter day. For MidAmerican Energy's 2020/2021 winter heating season preliminary peak-day of February 14, 2021, supply sources used to meet deliveries to traditional retail sales service customers included 51% from purchases delivered on interstate pipelines, 33% from interstate pipeline storage services and 16% from MidAmerican Energy's LNG facilities.

MidAmerican Energy attempts to optimize the value of its regulated transportation capacity, natural gas supply and interstate pipeline storage services by engaging in wholesale transactions. IUB and SDPUC rulings have allowed MidAmerican Energy to retain 50% of the respective jurisdictional margins earned on certain wholesale sales of natural gas, with the remaining 50% being returned to customers through the PGAs.

MidAmerican Energy is not aware of any factors that would cause material difficulties in meeting its anticipated retail customer demand under normal operating conditions for the foreseeable future.


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Energy Efficiency Programs

MidAmerican Energy has provided a comprehensive set of demand- and energy-reduction programs to its Iowa electric and natural gas customers since 1990. The programs, collectively referred to as energy efficiency programs, are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. Current programs offer services to customers such as energy engineering audits and information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, MidAmerican Energy offers rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for efficient construction. Incentives are also paid to residential customers who participate in the air conditioner load control program and nonresidential customers who participate in the nonresidential load management program. In Iowa, legislation passed in 2018 provides that projected cumulative average annual costs for a natural gas energy efficiency plan cannot exceed 1.5% of expected Iowa natural gas retail revenue and, for an electric demand response plan and separately for an electric energy efficiency plan other than demand response, cannot exceed 2.0% of expected annual Iowa electric retail revenue. Although subject to prudence reviews, state regulations allow for contemporaneous recovery of costs incurred for energy efficiency programs through state-specific energy efficiency service charges paid by all retail electric and natural gas customers. In 2020, $40 million was expensed for MidAmerican Energy's energy efficiency programs, which resulted in estimated first-year energy savings of 136,000 MWhs of electricity and 189,000 Dths of natural gas and an estimated peak load reduction of 345 MWs of electricity and 4,558 Dths per day of natural gas.

Human Capital

Employees

All of MidAmerican Funding's employees are employed by MidAmerican Energy. As of December 31, 2020, MidAmerican Energy had approximately 3,400 employees, of which approximately 1,400 were covered by union contracts. MidAmerican Energy has three separate contracts with locals of the International Brotherhood of Electrical Workers ("IBEW") and the United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union. A contract with the IBEW covering substantially all of the union employees expires April 30, 2022. For more information regarding MidAmerican Funding's and MidAmerican Energy's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.

NV ENERGY (NEVADA POWER AND SIERRA PACIFIC)

General

NV Energy, an indirect wholly owned subsidiary of BHE, is an energy holding company headquartered in Nevada whose principal subsidiaries are Nevada Power and Sierra Pacific. Nevada Power and Sierra Pacific are indirect consolidated subsidiaries of Berkshire Hathaway. Nevada Power is a United States regulated electric utility company serving 1.0 million retail customers primarily in the Las Vegas, North Las Vegas, Henderson and adjoining areas. Sierra Pacific is a United States regulated electric and natural gas utility company serving 0.4 million retail electric customers and 0.2 million retail and transportation natural gas customers in northern Nevada. The Nevada Utilities are principally engaged in the business of generating, transmitting, distributing and selling electricity and, in the case of Sierra Pacific, in distributing, selling and transporting natural gas. Nevada Power and Sierra Pacific have electric service territories covering approximately 4,500 square miles and 41,200 square miles, respectively. Sierra Pacific has a natural gas service territory covering approximately 900 square miles in Reno and Sparks. Principal industries served by the Nevada Utilities include gaming, recreation, warehousing, manufacturing and governmental services. Sierra Pacific also serves the mining industry. The Nevada Utilities buy and sell electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants to balance and optimize economic benefits of electricity generation, retail customer loads and wholesale transactions.

The Nevada Utilities' electric and natural gas operations are conducted under numerous nonexclusive franchise agreements, revocable permits and licenses obtained from federal, state and local authorities. The franchise agreements, with various expiration dates, are typically for 20- to 25-year terms. The Nevada Utilities operate under certificates of public convenience and necessity as regulated by the PUCN, and as such the Nevada Utilities have an obligation to provide electricity service to those customers within their service territory. In return, the PUCN has established rates on a cost-of-service basis, which are designed to allow the Nevada Utilities an opportunity to recover all prudently incurred costs of providing services and an opportunity to earn a reasonable return on their investment.
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NV Energy's monthly net income is affected by the seasonal impact of weather on electricity and natural gas sales and seasonal retail electricity prices from the Nevada Utilities'. For 2020, 76% of NV Energy annual net income was recorded in the months of June through September.

Regulated electric utility operations is Nevada Power's only segment while regulated electric utility operations and regulated natural gas operations are the two segments of Sierra Pacific.

The percentages of Sierra Pacific's operating revenue and operating income derived from the following business activities for the years ended December 31 were as follows:
202020192018
Operating revenue:
Electric86 %87 %88 %
Gas14 13 12 
100 %100 %100 %
Operating income:
Electric89 %88 %89 %
Gas11 12 11 
100 %100 %100 %

Nevada Power was incorporated under the laws of the state of Nevada in 1929 and its principal executive offices are located at 6226 West Sahara Avenue, Las Vegas, Nevada 89146, its telephone number is (702) 402-5000 and its internet address is www.nvenergy.com.

Sierra Pacific was incorporated under the laws of the state of Nevada in 1912 and its principal executive offices are located at 6100 Neil Road, Reno, Nevada 89511, its telephone number is (775) 834-4011 and its internet address is www.nvenergy.com.
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Regulated Electric Operations

Customers

The Nevada Utilities' sell electricity to retail customers in a single state jurisdiction. Electricity sold to the Nevada Utilities' retail and wholesale customers by class of customer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Nevada Power:
GWhs sold:
Residential10,477 46 %9,311 41 %9,970 43 %
Commercial4,591 20 4,657 21 4,778 20 
Industrial4,881 21 5,344 24 5,534 24 
Other195 193 214 
Total fully bundled20,144 88 19,505 87 20,496 88 
Distribution only service2,425 11 2,613 12 2,521 11 
Total retail22,569 99 22,118 99 23,017 99 
Wholesale374 527 274 
Total GWhs sold22,943 100 %22,645 100 %23,291 100 %
Average number of retail customers (in thousands):
Residential856 88 %840 88 %825 88 %
Commercial110 12 109 12 108 12 
Industrial— — — 
Total968 100 %951 100 %935 100 %
Sierra Pacific:
GWhs sold:
Residential2,672 23 %2,491 22 %2,483 23 %
Commercial2,977 26 2,973 26 2,998 27 
Industrial3,544 31 3,716 32 3,387 31 
Other15 — 16 — 16 — 
Total fully bundled9,208 80 9,196 80 8,884 81 
Distribution only service1,670 15 1,629 14 1,516 14 
Total retail10,878 95 10,825 94 10,400 95 
Wholesale548 662 558 
Total GWhs sold11,426 100 %11,487 100 %10,958 100 %
Average number of retail customers (in thousands):
Residential310 86 %304 86 %300 86 %
Commercial49 14 48 14 47 14 
Total359 100 %352 100 %347 100 %

Variations in weather, economic conditions, particularly for gaming, mining and wholesale customers and various conservation, energy efficiency and private generation measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.

There are seasonal variations in the Nevada Utilities' electric business that are principally related to weather and the related use of electricity for air conditioning. Typically, 48-52% of Nevada Power's and 36-38% of Sierra Pacific's regulated electric revenue is reported in the months of June through September.

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The annual hourly peak customer demand on the Nevada Utilities' electric systems occurs as a result of air conditioning use during the cooling season. Peak demand represents the highest demand on a given day and at a given hour. On August 18, 2020, customer usage of electricity caused an hourly peak demand of 5,965 MWs on Nevada Power's electric system, which is 159 MWs less than the record hourly peak demand of 6,124 MWs set July 28, 2016. On July 29, 2020, customer usage of electricity caused an hourly peak demand of 1,906 MWs on Sierra Pacific's electric system, which is 46 MWs more than the previous record hourly peak demand of 1,860 MWs set July 19, 2018.

Generating Facilities and Fuel Supply

The Nevada Utilities have ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding the Nevada Utilities' owned generating facilities as of December 31, 2020:
FacilityNet Owned
Net CapacityCapacity
Generating FacilityLocationEnergy SourceInstalled
(MWs)(1)
(MWs)(1)
Nevada Power:
NATURAL GAS:
ClarkLas Vegas, NVNatural gas1973-20081,102 1,102 
LenzieLas Vegas, NVNatural gas20061,102 1,102 
Harry AllenLas Vegas, NVNatural gas1995-2011628 628 
HigginsPrimm, NVNatural gas2004530 530 
SilverhawkLas Vegas, NVNatural gas2004520 520 
Las VegasLas Vegas, NVNatural gas1994-2003272 272 
Sun PeakLas Vegas, NVNatural gas/oil1991210 210 
4,364 4,364 
RENEWABLES:
NellisLas Vegas, NVSolar201515 15 
GoodspringsGoodsprings, NVWaste heat2010
20 20 
Total Nevada Power4,384 4,384 
Sierra Pacific:
NATURAL GAS:
TracySparks, NVNatural gas1974-2008753 753 
Ft. ChurchillYerington, NVNatural gas1968-1971226 226 
Clark MountainSparks, NVNatural gas1994132 132 
1,111 1,111 
COAL:
Valmy Unit Nos. 1 and 2Valmy, NVCoal1981-1985522 261 
Total Sierra Pacific1,633 1,372 
Total NV Energy6,017 5,756 

(1)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates Nevada Power or Sierra Pacific's ownership of Facility Net Capacity.


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The following table shows the percentages of the Nevada Utilities' total energy supplied by energy source for the years ended December 31:
202020192018
Nevada Power:
Natural gas66 %65 %64 %
Coal— 
Total energy generated66 70 70 
Energy purchased - long-term contracts (renewable)(1)
15 17 16 
Energy purchased - long-term contracts (non-renewable)13 11 10 
Energy purchased - short-term contracts and other
100 %100 %100 %
Sierra Pacific:
Natural gas48 %46 %48 %
Coal11 
Total energy generated56 57 56 
Energy purchased - long-term contracts (non-renewable)24 27 29 
Energy purchased - long-term contracts (renewable)(1)
15 13 12 
Energy purchased - short-term contracts and other
100 %100 %100 %

(1)     All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.

The Nevada Utilities are required to have resources available to continuously meet their customer needs and reliably operate their electric systems. The percentage of the Nevada Utilities' energy supplied by energy source varies from year-to-year and is subject to numerous operational and economic factors such as planned and unplanned outages; fuel commodity prices; fuel transportation costs; weather; environmental considerations; transmission constraints; and wholesale market prices of electricity. The Nevada Utilities evaluate these factors continuously in order to facilitate economical dispatch of their generating facilities. When factors for one energy source are less favorable, the Nevada Utilities place more reliance on other energy sources. As long as the Nevada Utilities' purchases are deemed prudent by the PUCN, through their annual prudency review, the Nevada Utilities are permitted to recover the cost of fuel and purchased power. The Nevada Utilities also have the ability to reset quarterly the BTERs, with PUCN approval, based on the last twelve months fuel costs and purchased power and to reset quarterly DEAA.

The Nevada Utilities have adopted an approach to managing the energy supply function that has three primary elements. The first element is a set of management guidelines for procuring and optimizing the supply portfolio that is consistent with the requirements of a load serving entity with a full requirements obligation, and with the growth of private generation serving a small but growing group of customers with partial requirements. The second element is an energy risk management and control approach that ensures clear separation of roles between the day-to-day management of risks and compliance monitoring and control and ensures clear distinction between policy setting (or planning) and execution. Lastly, the Nevada Utilities pursue a process of ongoing regulatory involvement and acknowledgment of the resource portfolio management plans.

The Nevada Utilities have entered into multiple long-term power purchase contracts (three or more years) with suppliers that generate electricity utilizing renewable resources, natural gas and coal. Nevada Power has entered into contracts with a total capacity of 3,612 MWs with contract termination dates ranging from 2022 to 2067. Included in these contracts are 3,352 MWs of capacity from renewable energy, of which 2,068 MWs of capacity are under development or construction and not currently available. Sierra Pacific has entered into contracts with a total capacity of 1,178 MWs with contract termination dates ranging from 2022 to 2046. Included in these contracts are 992 MWs of capacity from renewable energy, of which 401 MWs of capacity are under development or construction and not currently available.

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The Nevada Utilities manage certain risks relating to their supply of electricity and fuel requirements by entering into various contracts, which may be accounted for as derivatives, including forwards, futures, options, swaps and other agreements. Refer to NV Energy's "General Regulation" section in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction and Nevada Power's Item 7A and Sierra Pacific's Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.

    Natural Gas

The Nevada Utilities rely on first-of-the-month indexed physical gas purchases for the majority of natural gas needed to operate their generating facilities. To secure natural gas supplies for the generating facilities, the Nevada Utilities execute purchases pursuant to a PUCN approved four season laddering strategy. In 2020, natural gas supply net purchases averaged 320,382 and 169,522 Dths per day with the winter period contracts averaging 273,504 and 189,422 Dths per day and the summer period contracts averaging 353,678 and 155,439 Dths per day for Nevada Power and Sierra Pacific, respectively. The Nevada Utilities believe supplies from these sources are presently adequate and available to meet its needs.

The Nevada Utilities contract for firm natural gas pipeline capacity to transport natural gas from production areas to their service territory through direct interconnects to the pipeline systems of several interstate natural gas pipeline systems, including Nevada Power who contracts with Kern River, an affiliated company. Sierra Pacific utilizes natural gas storage contracted from interstate pipelines to meet retail customer requirements and to manage the daily changes in demand due to changes in weather and other usage factors. The stored natural gas is typically replaced during off-peak months when the demand for natural gas is historically lower than during the heating season.

    Coal

Sierra Pacific relies on spot market solicitations for coal supplies and will regularly monitor the western coal market for opportunities to meet these needs. Sierra Pacific has a transportation services contract with Union Pacific Railroad Company to ship coal from various origins in central Utah, western Colorado and Wyoming that expires December 31, 2025. Sierra Pacific has no commitments to purchase coal for 2021 or beyond. The Navajo Generating Station was shut down in November 2019 and Nevada Power has no coal requirements going forward.

        Energy Imbalance Market

The Nevada Utilities participate in the EIM operated by the California ISO, which reduces costs to serve customers through more efficient dispatch of a larger and more diverse pool of resources, more effectively integrates renewables and enhances reliability through improved situational awareness and responsiveness. The EIM expands the real-time component of the California ISO's market technology to optimize and balance electricity supply and demand every five minutes across the EIM footprint. The EIM is voluntary and available to all balancing authorities in the western United States. EIM market participants submit bids to the California ISO market operator before each hour for each generating resource they choose to be dispatched by the market. Each bid is comprised of a dispatchable operating range, ramp rate and prices across the operating range. The California ISO market operator uses sophisticated technology to select the least-cost resources to meet demand and send simultaneous dispatch signals to every participating generator across the EIM footprint every five minutes. In addition to generation resource bids, the California ISO market operator also receives continuous real-time updates of the transmission grid network, meteorological and load forecast information that it uses to optimize dispatch instructions. Outside the EIM footprint, utilities in the western United States do not utilize comparable technology and are largely limited to transactions within the borders of their balancing authority area to balance supply and demand intra-hour using a combination of manual and automated dispatch. The EIM delivers customer benefits by leveraging automation and resource diversity to result in more efficient dispatch, more effective integration of renewables and improved situational awareness. Benefits are expected to increase further with renewable resource expansion and as more entities join the EIM bringing incremental diversity.

Transmission and Distribution

The Nevada Utilities' transmission system is part of the Western Interconnection, a regional grid in the United States. The Western Interconnection includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. The Nevada Utilities' transmission system, together with contractual rights on other transmission systems, enables the Nevada Utilities to integrate and access generation resources to meet their customer load requirements. Nevada Power's transmission and distribution systems included approximately 1,900 miles of transmission lines, 14,000 miles of distribution lines and 210 substations as of December 31, 2020. Sierra Pacific's transmission and distribution systems included approximately 4,200 miles of transmission lines, 9,500 miles of distribution lines and 200 substations as of December 31, 2020.

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ON Line is a 231-mile, 500-kV transmission line connecting Nevada Power's and Sierra Pacific's service territories. ON Line provides the ability to jointly dispatch energy throughout Nevada and provide access to renewable energy resources in parts of northern and eastern Nevada, which enhances the Nevada Utilities' ability to manage and optimize their generating facilities. ON Line provides between 600 MW northbound and 900 MW southbound of transfer capability with interconnection between the Robinson Summit substation on the Sierra Pacific system and the Harry Allen substation on the Nevada Power system. ON Line was a joint project between the Nevada Utilities and Great Basin Transmission, LLC. The Nevada Utilities own a 25% interest in ON Line and have entered into a long-term transmission use agreement with Great Basin Transmission, LLC for its 75% interest in ON Line until 2054. The Nevada Utilities share of its 25% interest in ON Line and the long-term transmission use agreement is split 75% for Nevada Power and 25% for Sierra Pacific, previously split 95% for Nevada Power and 5% for Sierra Pacific. In December 2019, the PUCN approved an order to update the split starting January 1, 2020 to 75% for Nevada Power and 25% for Sierra Pacific to more accurately reflect the benefits obtained from the transmission line. In August 2020, the FERC approved the amended agreement between the Nevada Utilities and Great Basin Transmission, LLC that reallocated the PUCN-approved, updated ownership percentage from Nevada Power to Sierra Pacific.

Future Generation, Conservation and Energy Efficiency

        Energy Supply Planning

Within the energy supply planning process, there are four key components covering different time frames:

IRPs are filed by the Nevada Utilities for approval by the PUCN every three years and the Nevada Utilities may, as necessary, file amendments to their IRPs. IRPs are prepared in compliance with Nevada laws and regulations and cover a 20-year period. Nevada law governing the IRP process was modified in 2017 and now requires joint filings by Nevada Power and Sierra Pacific. IRPs develop a comprehensive, integrated plan that considers customer energy requirements and propose the resources to meet those requirements in a manner that is consistent with prevailing market fundamentals. The ultimate goal of the IRPs is to balance the objectives of minimizing costs and reducing volatility while reliably meeting the electric needs of the Nevada Utilities' customers. Costs incurred to complete projects approved through the IRP process still remain subject to review for reasonableness by the PUCN.
Energy Supply Plans ("ESP") are filed with the PUCN for approval and operate in conjunction with the PUCN-approved 20-year IRP. The ESP has a one- to three-year planning horizon and is an intermediate-term resource procurement and risk management plan that establishes the supply portfolio strategies within which intermediate-term resource requirements will be met with PUCN approval required for executing contracts of longer than three years.
Distributed Resource Plans ("DRP") are filed with the PUCN for approval and operate in conjunction with the PUCN-approved 20-year IRP. The DRP establishes a formal process to aid in the cost-effective integration of distributed resources into the Nevada Utilities' distribution and transmission process and ultimately the NV Energy utilities' electricity grid.
Action plans are filed with the PUCN for approval and operate in conjunction with the PUCN-approved 20-year IRP and PUCN-approved ESP. The action plan establishes tactical execution activities with a one-month to twelve-month focus.

In July 2020, the Nevada Utilities filed their fourth amendment to the IRP requesting approval of two new renewable energy power purchase agreements, a utility-owned renewable facility, a utility-owned community scale renewable facility and updates to the Transmission Plan. In July 2020, the Nevada Utilities also filed a joint petition requesting to defer the September 2020 filing of the Updated Distributed Resource Plans until its June 2021 Joint Integrated Resource Plan is filed. In September 2020, the PUCN issued an order granting the petition to defer the filing and ordered the Nevada Utilities to conduct an informal workshop in October 2020 to provide an update of the distributed resources plan and present information consistent with the statutory requirements. In November 2020, the Nevada Utilities filed a settlement stipulation for Phase I of the fourth amendment to the IRP, which was followed by a hearing. The settlement resolved all issues related to the load forecast, four renewable energy projects and certain transmission investments. The stipulation was approved by the PUCN in December 2020. Phase II Jumbo Road, Marshall, Grandehearing was scheduled in February 2021.
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Emissions Reduction and Capacity Replacement Plan

In compliance with Senate Bill No. 123, Nevada Power retired 255 MWs of coal-fueled generation in 2019 in addition to the 557 MWs of coal-fueled generation retired in 2017. Consistent with the Emissions Reduction and Capacity Replacement Plan ("ERCR Plan"), between 2014 and 2016, Nevada Power acquired 536 MWs of natural gas generating resources, executed long-term power purchase agreements for 200 MWs of nameplate renewable energy capacity and constructed a 15-MW solar photovoltaic facility. Nevada Power has the option to acquire 35 MWs of nameplate renewable energy capacity in the future under the ERCR Plan, subject to PUCN approval.

    Energy Efficiency Programs

The Nevada Utilities have provided a comprehensive set of energy efficiency, demand response and conservation programs to their Nevada electric customers. The programs are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. Current programs offer services to customers such as energy audits and customer education and awareness efforts that provide information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, the Nevada Utilities have offered rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for efficient construction. Incentives are also paid to residential customers who participate in the air conditioner load control program and nonresidential customers who participate in the nonresidential load management program. Energy efficiency program costs are recovered through annual rates set by the PUCN, and adjusted based on the Nevada Utilities' annual filing to recover current program costs and any over or under collections from the prior filing, subject to prudence review. During 2020, Nevada Power spent $33 million on energy efficiency programs, resulting in an estimated 218,913 MWhs of electric energy savings and an estimated 207 MWs of electric peak load management. During 2020, Sierra Pacific spent $10 million on energy efficiency programs, resulting in an estimated 96,933 MWhs of electric energy savings and an estimated 32 MWs of electric peak load management.

Regulated Natural Gas Operations

Sierra Pacific is engaged in the distribution of natural gas to customers in its service territory and the related procurement, transportation and storage of natural gas for the benefit of those customers. Sierra Pacific purchases natural gas from various suppliers and contracts with interstate natural gas pipelines for transportation of the natural gas from the production areas to Sierra Pacific's service territory and for storage services to manage fluctuations in system demand and seasonal pricing. Sierra Pacific sells natural gas and delivery services to end-use customers on its distribution system; sells natural gas to other utilities, municipalities and energy marketing companies; and transports natural gas through its distribution system for a number of end-use customers who have independently secured their supply of natural gas. During 2020, 10% of the total natural gas delivered through Sierra Pacific's distribution system was for transportation service.

Natural gas property consists primarily of natural gas mains and service lines, meters, and related distribution equipment, including feeder lines to communities served from natural gas pipelines owned by others. The natural gas distribution facilities of Sierra Pacific included 3,500 miles of natural gas mains and service lines as of December 31, 2020.
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Customer Usage and Seasonality

The percentages of natural gas sold to Sierra Pacific's retail and wholesale customers by class of customer, total Dths of natural gas sold, total Dths of transportation service and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Residential56 %57 %55 %
Commercial(1)
28 29 28 
Industrial(1)
10 10 11 
Total retail94 96 94 
Wholesale(2)
100 %100 %100 %
Total Dths of natural gas sold (in thousands)18,622 19,846 18,334 
Total Dths of transportation service (in thousands)1,850 2,217 2,250 
Total average number of retail customers (in thousands)174 170 167 

(1)Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers with monthly gas usage less than 12,000 therms during five consecutive winter months. Industrial customers are non-residential customers that use natural gas in excess of 12,000 therms during one or more winter months.

(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

There are seasonal variations in Sierra Pacific's regulated natural gas business that are principally due to the use of natural gas for heating. Typically, 47-56% of Sierra Pacific's regulated natural gas revenue is reported in the months of December through March.

On February 3, 2020, Sierra Pacific recorded its highest peak-day natural gas delivery of 141,416 Dths, which is 22,158 Dths less than the record peak-day delivery of 163,574 Dths set on December 9, 2013. This peak-day delivery consisted of 95% traditional retail sales service and 5% transportation service.

Fuel Supply and Capacity

The purchase of natural gas for Sierra Pacific's regulated natural gas operations is done in combination with the purchase of natural gas for Sierra Pacific's regulated electric operations. In response to energy supply challenges, Sierra Pacific has adopted an approach to managing the energy supply function that has three primary elements, as discussed earlier under Generating Facilities and Fuel Supply. Similar to Sierra Pacific's regulated electric operations, as long as Sierra Pacific's purchases of natural gas are deemed prudent by the PUCN, through its annual prudency review, Sierra Pacific is permitted to recover the cost of natural gas. Sierra Pacific also has the ability, with PUCN approval, to reset quarterly the BTERs, based on the last twelve months fuel costs, and to reset quarterly DEAA.

Human Capital

Employees

As of December 31, 2020, Nevada Power had approximately 1,400 employees, of which approximately 700 were covered by a union contract with the International Brotherhood of Electrical Workers.

As of December 31, 2020, Sierra Pacific had approximately 1,000 employees, of which approximately 500 were covered by a union contract with the International Brotherhood of Electrical Workers.

For more information regarding Nevada Power's and Sierra Pacific's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.


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NORTHERN POWERGRID

Northern Powergrid, an indirect wholly owned subsidiary of BHE, is a holding company which owns two companies that distribute electricity in Great Britain, Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc. In addition to the Northern Powergrid Distribution Companies, Northern Powergrid also owns a meter asset rental business that leases meters to energy suppliers in the United Kingdom, an engineering contracting business that provides electrical infrastructure contracting services primarily to third parties and a hydrocarbon exploration and development business that is focused on developing integrated upstream gas projects in Europe and Australia.

The Northern Powergrid Distribution Companies serve 3.9 million end-users and operate in the north-east of England from North Northumberland through Tyne and Wear, County Durham and Yorkshire to North Lincolnshire, an area covering 10,000 square miles. The principal function of the Northern Powergrid Distribution Companies is to build, maintain and operate the electricity distribution network through which the end-user receives a supply of electricity.

The Northern Powergrid Distribution Companies receive electricity from the national grid transmission system and from generators that are directly connected to the distribution network and distribute it to end-users' premises using their networks of transformers, switchgear and distribution lines and cables. Substantially all of the end-users in the Northern Powergrid Distribution Companies' distribution service areas are directly or indirectly connected to the Northern Powergrid Distribution Companies' networks and electricity can only be delivered to these end-users through their distribution systems, thus providing the Northern Powergrid Distribution Companies with distribution volumes that are relatively stable from year to year. The Northern Powergrid Distribution Companies charge fees for the use of their distribution systems to the suppliers of electricity.

The suppliers purchase electricity from generators, sell the electricity to end-user customers and use the Northern Powergrid Distribution Companies' distribution networks pursuant to an industry standard "Distribution Connection and Use of System Agreement." During 2020, RWE Npower PLC and certain of its affiliates and British Gas Trading Limited represented 15% and 12%, respectively, of the total combined distribution revenue of the Northern Powergrid Distribution Companies. Variations in demand from end-users can affect the revenues that are received by the Northern Powergrid Distribution Companies in any year, but such variations have no effect on the total revenue that the Northern Powergrid Distribution Companies are allowed to recover in a price control period. Under- or over-recoveries against price-controlled revenues are carried forward into prices for future years.

The Northern Powergrid Distribution Companies' combined service territory features a diverse economy with no dominant sector. The mix of rural, agricultural, urban and industrial areas covers a broad customer base ranging from domestic usage through farming and retail to major industry including automotives, chemicals, mining, steelmaking and offshore marine construction. The industry within the area is concentrated around the principal centers of Newcastle, Middlesbrough, Sheffield and Leeds.

The price controlled revenue of the Northern Powergrid Distribution Companies is set out in the special conditions of the licenses of those companies. The licenses are enforced by the regulator, GEMA, through the Ofgem and limit increases to allowed revenues (or may require decreases) based upon the rate of inflation, other specified factors and other regulatory action. Changes to the price controls can be made by the regulator, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's Competition and Markets Authority ("CMA"). It has been the convention in Great Britain for regulators to conduct periodic regulatory reviews before making proposals for any changes to the price controls. The current electricity distribution price control became effective April 1, 2015 and will continue through March 31, 2023.


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GWhs and percentages of electricity distributed to the Northern Powergrid Distribution Companies' end-users and the total number of end-users as of and for the years ended December 31 were as follows:
202020192018
Northern Powergrid (Northeast) plc:
Residential5,252 40 %4,982 36 %5,125 36 %
Commercial(1)
1,411 11 1,644 12 1,782 13 
Industrial(1)
6,377 48 7,097 51 7,134 50 
Other142 156 198 
13,182 100 %13,879 100 %14,239 100 %
Northern Powergrid (Yorkshire) plc:
Residential7,694 39 %7,311 35 %7,509 36 %
Commercial(1)
2,048 11 2,391 12 2,558 12 
Industrial(1)
9,540 49 10,722 52 10,716 51 
Other217 236 268 
19,499 100 %20,660 100 %21,051 100 %
Total electricity distributed32,681 34,539 35,290 
Number of end-users (in thousands):
Northern Powergrid (Northeast) plc1,615 1,612 1,603 
Northern Powergrid (Yorkshire) plc2,319 2,314 2,301 
3,934 3,926 3,904 

(1)     The increase in industrial and decrease in commercial is largely due to the Great Britain-wide customer reclassifications which are in progress (as a result of Ofgem approved industry changes), negatively impacting commercial volumes by 100 GWhs in 2018 compared to 2017.

As of December 31, 2020, the combined electricity distribution network of the Northern Powergrid Distribution Companies included approximately 17,300 miles of overhead lines, 42,800 miles of underground cables and 770 major substations.

BHE PIPELINE GROUP (EASTERN ENERGY GAS)

BHE GT&S

BHE GT&S is an indirect wholly owned subsidiary of BHE. BHE GT&S' operations, through its ownership of Eastern Energy Gas, includes three interstate natural gas pipeline systems, one of the nation's largest underground natural gas storage systems and one liquefied natural gas export, import and storage facility. BHE GT&S' operations also include two smaller liquefied natural gas facilities, one field service company, and one gathering and processing company.

Eastern Energy Gas' principal subsidiaries are EGTS and Carolina Gas Transmission, LLC ("CGT"). EGTS's operations include natural gas transmission and storage pipelines located in Maryland, New York, Ohio, Pennsylvania, Virginia and West Virginia. EGTS also operates one of the nation's largest underground natural gas storage systems located in New York, Pennsylvania and West Virginia. CGT's operations include an interstate natural gas pipeline system located in South Carolina and southeastern Georgia. Eastern Energy Gas also owns a 50% equity interest in Iroquois Gas Transmission System L.P. ("Iroquois"). Iroquois owns and operates an interstate natural gas pipeline located in the states of New York and Connecticut.


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Eastern Energy Gas' LNG operations involve the export, import and storage of LNG at the Cove Point LNG Facility that is owned by Cove Point LNG, LP ("Cove Point"), located in Maryland, as well as the transportation of regasified LNG to the interstate pipeline grid and mid-Atlantic markets and the liquefaction of natural gas for export as LNG. Cove Point's LNG Facility has an operational peak regasification daily send-out capacity of approximately 1.8 million Dth and an aggregate LNG storage capacity of approximately 14.6 billions of cubic feet equivalent ("Bcfe"). In addition, Cove Point has a small liquefier that has the potential to produce approximately 15,000 Dth/day. The Liquefaction Facility consists of one LNG train with a nameplate outlet capacity of 5.25 million tonnes per annum ("Mtpa"). Cove Point has authorization from the Department of Energy ("DOE") to export up to 0.77 Bcfe/day (approximately 5.75 Mtpa) should the Liquefaction Facility perform better than expected. Cove Point's 36-inch diameter underground interstate natural gas pipelines are approximately 139 miles, with interconnections to Transcontinental Gas Pipeline, LLC in Fairfax County, Virginia, and with Columbia Gas Transmission, LLC and EGTS in Loudoun County, Virginia. Eastern Energy Gas operates, as the general partner, and owns a 25% limited partnership interest in the Cove Point liquefied natural gas export, import and storage facility. BHE GT&S also operates and has ownership interests in three smaller liquefied natural gas facilities in Alabama, Florida and Pennsylvania.

In total, Eastern Energy Gas operates approximately 5,400 miles of natural gas transmission, gathering and storage pipelines, of which approximately 5,300 miles are owned by Eastern Energy Gas, with a design capacity of 12.5 Bcf per day as well as approximately 100 miles of natural gas liquids pipelines operated by BHE GT&S. Eastern Energy Gas also operates 17 underground storage fields with a total operating storage design capacity of approximately 420 Bcf, of which approximately 306 Bcf relates to natural gas storage field capacity that Eastern Energy Gas owns.

BHE GT&S' pipeline system is configured with approximately 360 active receipt and delivery points. In 2020, BHE GT&S delivered over 2.0 trillion cubic feet ("Tcf") of natural gas to its customers.

BHE GT&S' natural gas transmission and storage earnings primarily result from rates established by FERC. Revenues derived from BHE GT&S' pipeline operations are primarily from reservation charges for firm transportation and storage services as provided for in their FERC-approved tariffs. Reservation charges are required to be paid regardless of volumes transported or stored. The profitability of these businesses is dependent on their ability, through the rates they are permitted to charge, to recover costs and earn a reasonable return on their capital investments. Approximately 91% of BHE GT&S' transmission capacity is subscribed including 88% under long-term contracts (two years or greater) and 3% on a year-to-year basis. BHE GT&S' storage services are 100% subscribed with long-term contracts. Additionally, BHE GT&S receives revenue from firm fee-based contractual arrangements, including negotiated rates, for certain pipeline transportation and LNG storage and terminal services. Variability in BHE GT&S' earnings results from changes in operating and maintenance expenditures, as well as changes in rates and the demand for services, which are dependent on weather, changes in commodity prices and the economy.

Except for quantities of natural gas owned and managed for operational and system balancing purposes, BHE GT&S does not own the natural gas that is transported through its system. The sale of natural gas for operational and system balancing purposes, sales from our field services company and sales of natural gas liquids accounts for the majority of the remaining operating revenue.

During 2020, BHE GT&S had two customers that each accounted for greater than 10% of its operating revenue and its ten largest customers accounted for 53% of its total operating revenue. BHE GT&S has agreements with terms through 2038 to retain the majority of its two largest customers' volumes. The loss of any of these significant customers, if not replaced, could have a material adverse effect on BHE GT&S.

Human Capital

Employees

As of December 31, 2020, Eastern Energy Gas had approximately 1,500 employees, consisting of approximately 1,100 natural gas operations employees and 400 corporate services employees. As of December 31, 2020, approximately 600 employees were covered by a union contract with the Utility Workers Union of America. For more information regarding Eastern Energy Gas' human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.
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Northern Natural Gas

Northern Natural Gas, an indirect wholly owned subsidiary of BHE, owns the largest interstate natural gas pipeline system in the United States, as measured by pipeline miles, which reaches from west Texas to Michigan's Upper Peninsula. Northern Natural Gas primarily transports and stores natural gas for utilities, municipalities, gas marketing companies and industrial and commercial users. Northern Natural Gas' pipeline system consists of two commercial segments. Its traditional end-use and distribution market area in the northern part of its system, referred to as the Market Area, includes points in Iowa, Nebraska, Minnesota, Wisconsin, South Dakota, Michigan and Illinois. Its natural gas supply and delivery service area in the southern part of its system, referred to as the Field Area, includes points in Kansas, Texas, Oklahoma and New Mexico. The Market Area and Field Area are separated at a Demarcation Point ("Demarc"). Northern Natural Gas' pipeline system consists of 14,500 miles of natural gas pipelines, including 6,000 miles of mainline transmission pipelines and 8,500 miles of branch and lateral pipelines, with a Market Area design capacity of 6.3 Bcf per day, a Field Area delivery capacity of 1.7 Bcf per day to the Market Area and 1.4 Bcf per day to the West Texas area and over 79 Bcf of firm service and operational storage cycle capacity in five storage facilities. Northern Natural Gas' pipeline system is configured with approximately 2,240 active receipt and delivery points which are integrated with the facilities of LDCs. Many of Northern Natural Gas' LDC customers are part of combined utilities that also use natural gas as a fuel source for electric generation. Northern Natural Gas delivered over 1.3 Tcf of natural gas to its customers in 2020.

Northern Natural Gas' transportation rates and most of its storage rates are cost-based. These rates are designed to provide Northern Natural Gas with an opportunity to recover its costs of providing services and earn a reasonable return on its investments. In addition, Northern Natural Gas has fixed rates that are market-based for certain of its firm storage contracts with contract terms that expire in 2028.

Northern Natural Gas' operating revenue for the years ended December 31 was as follows (in millions):
202020192018
Transportation:
Market Area$633 65 %$544 64 %$518 58 %
Field Area - deliveries to Demarc137 14 106 12 102 11 
Field Area - other deliveries89 10 95 11 71 
Total transportation859 89 745 87 691 78 
Storage91 65 68 
Total transportation and storage revenue950 98 810 95 759 86 
Gas, liquids and other sales18 42 128 14 
Total operating revenue$968 100 %$852 100 %$887 100 %

Substantially all of Northern Natural Gas' Market Area transportation revenue is generated from reservation charges, with the balance from usage charges. Northern Natural Gas transports natural gas primarily to local distribution markets and end-users in the Market Area. Northern Natural Gas provides service to 84 utilities, including MidAmerican Energy, an affiliate company, which serve numerous residential, commercial and industrial customers. Most of Northern Natural Gas' transportation capacity in the Market Area is committed to customers under firm transportation contracts, where customers pay Northern Natural Gas a monthly reservation charge for the right to transport natural gas through Northern Natural Gas' system. Reservation charges are required to be paid regardless of volumes transported or stored. As of December 31, 2020, approximately 75% of Northern Natural Gas' customers' entitlement in the Market Area have terms beyond 2022 and approximately 51% beyond 2024. As of December 31, 2020, the weighted average remaining contract term for Northern Natural Gas' Market Area firm transportation contracts is over six years.

Northern Natural Gas' Field Area customers consist primarily of energy marketing companies and midstream companies, which take advantage of the price spread opportunities created between Field Area supply points and Demarc. In addition, there are a growing number of midstream customers that are delivering gas south in the Field Area to the Waha Hub market. The remaining Field Area transportation service is sold to power generators connected to Northern Natural Gas' system in Texas and New Mexico that are contracted on a long-term basis with a weighted average remaining contract term of six years, and various LDCs, energy marketing companies and midstream companies for both connected and off-system markets.


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Northern Natural Gas' storage services are provided through the operation of one underground natural gas storage field in Iowa and two underground natural gas storage facilities in Kansas. Additionally, Northern Natural Gas has two LNG storage peaking units, one in Iowa and one in Minnesota, that support its transportation service. The three underground natural gas storage facilities and two LNG storage peaking units have a total firm service and operational storage cycle capacity of over 79 Bcf and over 2.2 Bcf per day of peak delivery capability. These storage facilities provide operational flexibility for the daily balancing of Northern Natural Gas' system and provide services to customers for their winter peaking and year-round load swing requirements. Northern Natural Gas has 65.1 Bcf of firm storage contracts. Firm storage contracts at maximum tariff rates represent 54.4 Bcf, and the market-based rate contracts represent the remaining 10.7 Bcf. The average remaining contract term for firm storage contracts is five years.

Except for quantities of natural gas owned and managed for operational and system balancing purposes, Northern Natural Gas does not own the natural gas that is transported through its system. The sale of natural gas for operational and system balancing purposes accounts for the majority of the remaining operating revenue.

During 2020, Northern Natural Gas had two customers that each accounted for greater than 10% of its transportation and storage revenue and its ten largest customers accounted for 64% of its system-wide transportation and storage revenue. Northern Natural Gas has agreements with terms through 2029 and 2034 to retain the majority of its two largest customers' volumes. The loss of any of these significant customers, if not replaced, could have a material adverse effect on Northern Natural Gas.

Northern Natural Gas' extensive pipeline system, which is interconnected with many interstate and intrastate pipelines in the national grid system, has access to multiple major supply basins. Direct access is available from producers in the Anadarko, Permian and Hugoton basins, some of which have experienced increased production from shale and tight sands formations adjacent to Northern Natural Gas' pipeline. Since 2011, the pipeline has connected 2,395,000 Dths per day of supply access from the Midland and Delaware Basins within the Permian Basin area in west Texas and from the Granite Wash tight sands formations in the Texas panhandle and in Oklahoma. Additionally, Northern Natural Gas has interconnections with several interstate pipelines and several intrastate pipelines with receipt, delivery, or bi-directional capabilities. Because of Northern Natural Gas' location and multiple interconnections it is able to access natural gas from other key production areas, such as the Rocky Mountain, Williston, including the Bakken formation, and western Canadian basins. The Rocky Mountain basins are accessed through interconnects with Trailblazer Pipeline Company, Tallgrass Interstate Gas Transmission, LLC, Cheyenne Plains Gas Pipeline Company, LLC, Colorado Interstate Gas Company and Rockies Express Pipeline, LLC ("REX"). The western Canadian basins are accessed through interconnects with Northern Border Pipeline Company ("Northern Border"), Great Lakes Gas Transmission Limited Partnership ("Great Lakes") and Viking Gas Transmission Company ("Viking"). This supply diversity and access to both stable and growing production areas provides significant flexibility to Northern Natural Gas' system and customers.

Northern Natural Gas' system experiences significant seasonal swings in demand and revenue typically with approximately 60% of transportation revenue occurring during the months of November through March. This seasonality provides Northern Natural Gas with opportunities to deliver additional value-added services, such as firm and interruptible storage services. As a result of Northern Natural Gas' geographic location in the middle of the United States and its many interconnections with other pipelines, Northern Natural Gas has the opportunity to augment its steady end user and LDC revenue by capitalizing on opportunities for shippers to reach additional markets, such as Chicago, Illinois, other parts of the Midwest, and Texas, through interconnects.

Kern River

Kern River, an indirect wholly owned subsidiary of BHE, owns an interstate natural gas pipeline system that extends from supply areas in the Rocky Mountains to consuming markets in Utah, Nevada and California. Kern River operates 1,400 miles of mainline natural gas pipelines, with a design capacity of 2,166,575 Dths, or 2.2 Bcf, per day. The mainline pipeline extends from the system's point of origination near Opal, Wyoming, through the Central Rocky Mountains to Daggett, California. The mainline section consists of 1,300 miles of 36-inch diameter pipeline and 100 miles of various laterals that connect to the mainline. Except for quantities of natural gas owned for operational purposes, Kern River does not own the natural gas that is transported through its system. Kern River's transportation rates are cost-based. The rates are designed to provide Kern River with an opportunity to recover its costs of providing services and earn a reasonable return on its investments.


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Kern River's rates are based on a levelized rate design with recovery of 70% of the original investment during the initial long-term contracts ("Period One rates"). After expiration of the initial term, eligible customers have the option to elect service at rates ("Period Two rates") that are lower than Period One rates because they are designed to recover the remaining 30% of the original investment. To the extent that eligible customers do not contract for service at Period Two rates, the volumes are turned back and sold at market rates for varying terms. As of December 31, 2020, initial Period One contracts total 331,921 Dths per day. Period Two contracts total 1,054,029 Dths per day and 569,631 Dths per day of total turned back volume has an average remaining contract term of more than two years. The remaining capacity is sold on a short-term basis at market rates.

As of December 31, 2020, approximately 76% of Kern River's design capacity of 2,166,575 Dths per day is contracted pursuant to long-term firm natural gas transportation service agreements, whereby Kern River receives natural gas on behalf of customers at designated receipt points and transports the natural gas on a firm basis to designated delivery points. In return for this service, each customer pays Kern River a fixed monthly reservation fee based on each customer's maximum daily quantity, which represents nearly 86% of total operating revenue, and a commodity charge based on the actual amount of natural gas transported pursuant to its long-term firm natural gas transportation service agreements and Kern River's tariff.

These long-term firm natural gas transportation service agreements expire between April 2022 and April 2033 and have a weighted-average remaining contract term of over eight years. Kern River's customers include electric and natural gas distribution utilities, major oil and natural gas companies or affiliates of such companies, electric generating companies, energy marketing and trading companies and financial institutions. As of December 31, 2020, 73% of the firm capacity under contract has primary delivery points in California, with the flexibility to access secondary delivery points in Nevada and Utah. In 2019, Kern River provided approximately 26% of California's demand for natural gas.

During 2020, Kern River had two customers, including Nevada Power Company, d/b/a NV Energy, that each accounted for greater than 10% of its revenue. The loss of these significant customers, if not replaced, could have a material adverse effect on Kern River.

Competition

The Pipeline Companies compete with other pipelines on the basis of cost, flexibility, reliability of service and overall customer service, with the customer's decision being made primarily on the basis of delivered price, which includes both the natural gas commodity cost and transportation costs. The Pipeline Companies also compete with midstream operators and gas marketers seeking to provide or arrange transportation, storage and other services to meet customer needs. Natural gas competes with alternative energy sources, including coal, nuclear energy, wind, geothermal, solar and fuel oil and the electricity generated from these alternative energy sources. Legislation and governmental regulations, weather, futures markets, production costs and other factors beyond the control of the Pipeline Companies, influence the price of the natural gas commodity. Additionally, natural gas demand could be adversely affected by laws mandating or incenting renewable power sources that produce fewer GHG emissions than natural gas.

The Pipeline Companies generate a substantial portion of their revenue from long-term firm contracts for transportation and storage services and are therefore insulated from competitive factors during the terms of the contracts. When these long-term contracts expire, the Pipeline Companies face competitive pressures from other natural gas pipeline facilities. The Pipeline Companies' ability to extend existing customer contracts, remarket expiring contracted capacity or market new capacity is dependent on competitive alternatives, the regulatory environment and the market supply and demand factors at the relevant dates these contracts are eligible to be renewed or extended. The duration of new or renegotiated contracts will be affected by current commodity and transportation prices, competitive conditions and customers' judgments concerning future market trends and volatility.

Subject to regulatory requirements, the Pipeline Companies attempt to recontract or remarket capacity at the maximum rates allowed under their tariffs, although at times the Pipeline Companies discount these rates to remain competitive. Historically, the Pipeline Companies have been able to provide competitively priced services because of access to a variety of relatively low cost supply basins, cost control measures and the relatively high level of firm entitlement that is sold on a seasonal and annual basis, which lowers the per unit cost of transportation. To date, the Pipeline Companies have avoided significant pipeline system bypasses.

BHE GT&S' natural gas transmission operations compete with domestic and Canadian pipeline companies. The combination of reliable and flexible services, access to highly liquid and attractive pricing locations, significant storage capability, availability of numerous receipt and delivery points along its pipeline system and capacity rights held on third party pipelines enable BHE GT&S to tailor its services to meet the needs of individual customers.

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Northern Natural Gas needs to compete aggressively to serve existing load and add new load. Northern Natural Gas' attractive competitive position relative to other pipelines in the upper Midwest is reinforced each winter as customers expect, and receive, reliable deliveries of natural gas for their critical markets. Northern Natural Gas provides customers access to multiple supply basins that allow customers to obtain reliable supplies at competitive prices, not subject to the natural gas grid dynamics from pipeline competition that would limit customers to a singular supply source. Northern Natural Gas has been successful in competing for a significant amount of the increased demand related to residential and commercial needs and the construction of new power plants and new fertilizer or other industrial plants.

Other than the short-term transportation associated with the Permian business, Northern Natural Gas expects the current level of Field Area contracting to Demarc to continue in the foreseeable future, as Market Area customers presently need to purchase competitively-priced supplies from the Field Area to support their existing and growth demand requirements. However, the revenue received from these Field Area contracts is expected to decrease due to construction of new pipeline facilities.

Kern River is the only interstate pipeline that presently delivers natural gas directly from the Rocky Mountain gas supply region to end-users in the Southern California market. Kern River's levelized rate structure and access to upstream pipelines, storage facilities and economic Rocky Mountain gas reserves increase its competitiveness and attractiveness to end-users. Kern River believes it has an advantage relative to other interstate pipelines serving Southern California because its relatively new pipeline can be economically expanded and has required significantly less capital expenditures and ongoing maintenance than other systems.

Cove Point's gas transportation, LNG import and storage operations, as well as the Liquefaction Facility's capacity, are contracted primarily under long-term fixed reservation fee agreements. However, in the future Cove Point may compete with other independent terminal operators as well as major oil and gas companies on the basis of terminal location, services provided and price. In addition, the Liquefaction Facility may face competition on a global scale as international customers explore other options to meet their energy needs.

BHE TRANSMISSION

BHE Canada

BHE Canada, an indirect wholly owned subsidiary of BHE, primarily owns AltaLink, a regulated electric transmission-only utility company headquartered in Alberta, Canada serving approximately 85% of Alberta's population. AltaLink's high voltage transmission lines and related facilities transmit electricity from generating facilities to major load centers, cities and large industrial plants throughout its 87,000 square mile service territory, which covers a diverse geographic area including most major urban centers in central and southern Alberta. AltaLink's transmission facilities, consisting of approximately 8,200 miles of transmission lines and approximately 310 substations as of December 31, 2020, are an integral part of the Alberta Interconnected Electric System ("AIES"). BHE Canada also owns MATL Canada L.P., a company headquartered in Alberta, Canada, which operates 82 miles of the 230 kV Montana Alberta Tie Line located in Canada (the entire transmission line runs from Lethbridge, Alberta, Canada to Great Falls, Montana, and connects power grids in the two jurisdictions).

The AIES is a network or grid of transmission facilities operating at high voltages ranging from 69 kVs to 500 kVs. The grid delivers electricity from generating units across Alberta, Canada through approximately 16,000 miles of transmission lines. The AIES is interconnected to British Columbia's transmission system that links Alberta with the North American western interconnected system, interconnection with Saskatchewan's transmission system and interconnection with Montana's transmission system.

AltaLink is a transmission facility owner within the electricity industry in Alberta and is permitted to charge a tariff rate for the use of its transmission facilities. Such tariff rates are established on a cost-of-service regulatory model, which is designed to allow AltaLink an opportunity to recover its costs of providing services and to earn a reasonable return on its investments. Transmission tariffs are approved by the AUC and are collected from the AESO.

The electricity industry in Alberta consists of four principal segments. Generators sell wholesale power into the power pool operated by the AESO and through direct contractual arrangements. Alberta's transmission system or grid is composed of high voltage power lines and related facilities that transmit electricity from generating facilities to distribution networks and directly connected end-users. Distribution facility owners are regulated by the AUC and are responsible for arranging for, or providing, regulated rate and regulated default supply services to convey electricity from transmission systems and distribution-connected generators to end-use customers. Retailers can procure energy through the power pool, through direct contractual arrangements with energy suppliers or ownership of generation facilities and arrange for its distribution to end-use customers.

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The AESO mandate is defined in the Electric Utilities Act (Alberta) and its regulations, and requires the AESO to assess both current and future needs of Alberta's interconnected electrical system. In September 2019, the AESO released the 2019 Long-term Outlook, which is the AESO's forecast of Alberta's load and generation over the next 20 years, and is used as one input to guide the AESO in planning Alberta's transmission system. The 2019 Long-term Outlook includes a Reference Case Scenario, which is the AESO's main corporate forecast for long-term load growth and generation development in Alberta, and a set of alternative scenarios that are developed to understand future uncertainties. The Reference Case Scenario forecasts Alberta's electricity demand to grow at an annual rate of 0.9% over the next 20 years and a total of approximately 13 gigawatts of new generation capacity to be added for the same period. Other scenarios are developed based on modifying assumptions used in the Reference Case Scenario to reflect higher cogeneration development, alternative renewable policy, higher economic growth, lower economic growth, and a more diversified Alberta economy. The AESO indicates that it will continue monitoring economic, policy and industry development and if a scenario becomes more likely, the AESO may adopt it as its main forecast.

In January 2020, the AESO released the 2020 Long-term Transmission Plan. Developed based on a set of broad scenarios, the 2020 Long-term Transmission Plan seeks to optimize the use of Alberta's existing transmission system, and plan development of new transmission in a timely manner to provide for the safe, dependable and efficient delivery of electricity across Alberta. The AESO recognizes that the electricity industry is changing and therefore it continues to evolve its approach to planning. The 2020 Long-term Transmission Plan identifies 20 transmission developments proposed over the next five years, valued at approximately C$1.4 billion. These developments are estimated to increase average transmission rates by about C$0.50—C$0.70 per MW hour, starting in 2025. Approximately C$1.0 billion of the transmission developments are in AltaLink's service territory. Each of these developments will still require detailed needs analysis and regulatory approval prior to proceeding.
BHE U.S. Transmission

BHE U.S. Transmission, a wholly owned subsidiary of BHE, is engaged in various joint ventures to develop, own and operate transmission assets and is pursuing additional investment opportunities in the United States. Currently, BHE U.S. Transmission has two joint ventures with transmission assets that are operational. In May 2020, BHE U.S. Transmission acquired the general partner and limited partner interests in MATL LLP, a U.S based company with 132 line miles in the U.S. of the total 214 mile 230 kV line running from Lethbridge, Alberta, Canada to Great Falls, Montana.

BHE U.S. Transmission indirectly owns a 50% interest in ETT, along with subsidiaries of American Electric Power Company, Inc. ("AEP"). ETT owns and operates electric transmission assets in the ERCOT and, as of December 31, 2020, had total assets of $3.2 billion. ETT's transmission system includes approximately 1,900 miles of transmission lines and 38 substations as of December 31, 2020.

BHE U.S. Transmission also indirectly owns a 25% interest in Prairie Pinyon Pines, Alamo 6Wind Transmission, LLC, a joint venture with AEP and PearlWestar Energy, Inc., to build, own and operate a 108-mile, 345-kV transmission project in Kansas. The project had total assets of $136 million as of December 31, 2020.


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BHE RENEWABLES

The subsidiaries comprising the BHE Renewables reportable segment own interests in several independent power projects in the United States and one in the Philippines. The following table presents certain information concerning these independent power projects as of December 31, 2020:
PowerFacilityNet
PurchaseNetOwned
EnergyYearAgreementPowerCapacityCapacity
Generating FacilityLocationSourceInstalledExpiration
Purchaser(1)
(MWs)(2)
(MWs)(2)
WIND:
Grande PrairieNebraskaWind20162036OPPD400 400 
Jumbo RoadTexasWind20152033AE300 300 
Santa RitaTexasWind20182025-2038KC, CODTX, MES300 300 
Walnut RidgeIllinoisWind20182028USGSA212 212 
Pinyon Pines ICaliforniaWind20122035SCE168 168 
Pinyon Pines IICaliforniaWind20122035SCE132 132 
Bishop Hill IIIllinoisWind20122032Ameren81 81 
MarshallKansasWind20162036MJMEC, KPP, KMEA & COIMO72 72 
1,665 1,665 
SOLAR:
TopazCaliforniaSolar2013-20142039PG&E550 550 
Solar Star 1CaliforniaSolar2013-20152035SCE310 310 
Solar Star 2CaliforniaSolar2013-20152035SCE276 276 
Agua CalienteArizonaSolar2012-20132039PG&E290 142 
Alamo 6TexasSolar20172042CPS110 110 
Community Solar Gardens(6)
MinnesotaSolar2016-20182041-2043(5)98 98 
PearlTexasSolar20172042CPS50 50 
1,684 1,536 
NATURAL GAS:
CordovaIllinoisNatural Gas2001NANA512 512 
Power ResourcesTexasNatural Gas1988NANA212 212 
SaranacNew YorkNatural Gas1994NANA245 196 
YumaArizonaNatural Gas19942024SDG&E50 50 
1,019 970 
GEOTHERMAL:
Imperial Valley ProjectsCaliforniaGeothermal1982-2000(3)(3)345 345 
345 345 
HYDROELECTRIC:
Casecnan Project(4)
PhilippinesHydroelectric20012021NIA150 128 
WailukuHawaiiHydroelectric19932023HELCO10 10 
160 138 
Total Available Generating Capacity4,873 4,654 

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(1)San Diego Gas & Electric Company ("SDG&E"); Pacific Gas and Electric Company ("PG&E"), Ameren Illinois Company ("Ameren"), Southern California Edison ("SCE"), the Philippine National Irrigation Administration ("NIA"); Hawaii Electric Light Company, Inc. ("HELCO"); Austin Energy ("AE"); Omaha Public Power District ("OPPD"); Kimberly-Clark Corporation ("KC"); City of Denton, TX ("CODTX"); MidAmerican Energy Services, LLC ("MES"); U.S. General Services Administration ("USGSA"); Missouri Joint Municipal Electric Commission ("MJMEC"); Kansas Power Pool ("KPP"); Kansas Municipal Energy Agency ("KMEA"); City of Independence, MO ("COIMO"); and CPS Energy ("CPS").
(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates BHE Renewables' ownership of Facility Net Capacity.
(3)Approximately 12% of the Company's interests in the Imperial Valley Projects' Contract Capacity are Exempt Wholesale Generatorscurrently sold to Southern California Edison Company under a long-term power purchase agreement expiring in 2026. Certain long-term power purchase agreement renewals for 252 MWs have been entered into with other parties at fixed prices that expire from 2028 to 2039, of which 202 MWs mature in 2039.
(4)Under the terms of the agreement with the NIA, CalEnergy Philippines will own and operate the Casecnan project for a 20-year cooperation period which ends December 11, 2021, after which ownership and operation of the project will be transferred to the NIA at no cost on an "as-is" basis. NIA also pays CalEnergy Philippines for delivery of water pursuant to the agreement.
(5)The power purchasers are commercial, industrial and not-for-profit organizations.
(6)The community solar gardens project is consolidated in the table above for convenience as it consists of 98 distinct entities that each own an approximately 1-MW solar garden with independent but substantially similar terms and conditions.

Additionally, BHE Renewables has invested $6.2 billion in 32 wind projects sponsored by third parties, commonly referred to as tax equity investments.

The percentages of BHE Renewables' operating revenue derived from the following business activities for the years ended December 31 were as follows:
202020192018
Solar48 %48 %51 %
Wind20 21 18 
Geothermal18 19 19 
Hydro
Natural gas11 10 
Total operating revenue100 %100 %100 %

HOMESERVICES

HomeServices, a wholly-owned subsidiary of BHE, is the largest residential real estate brokerage firm in the United States. In addition to providing traditional residential real estate brokerage services, HomeServices offers other integrated real estate services, including mortgage originations and mortgage banking; title and closing services; property and casualty insurance; home warranties; relocation services; and other home-related services. HomeServices' real estate brokerage business is subject to seasonal fluctuations because more home sale transactions tend to close during the second and third quarters of the year. As a result, HomeServices' operating results and profitability are typically higher in the second and third quarters relative to the remainder of the year. HomeServices' owned brokerages currently operate in nearly 900 offices in 30 states and the District of Columbia with over 43,000 real estate agents under 46 brand names. The United States residential real estate brokerage business is subject to the general real estate market conditions, is highly competitive and consists of numerous local brokers and agents in each market seeking to represent sellers and buyers in residential real estate transactions.

HomeServices' franchise network currently includes approximately 370 franchisees primarily in the United States and internationally in over 1,600 brokerage offices with over 53,000 real estate agents under two brand names. In exchange for certain fees, HomeServices provides the right to use the Berkshire Hathaway HomeServices or Real Living brand names and other related service marks, as well as providing orientation programs, training and consultation services, advertising programs and other services.


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OTHER ENERGY BUSINESSES

Effective January 1, 2016, MidAmerican Energy Company transferred its nonregulated energy operations to MES, a subsidiary of BHE. MES is a nonregulated energy business consisting of competitive electricity and natural gas retail sales. MES' electric operations predominantly include sales to retail customers in Illinois, Ohio, Texas, Pennsylvania, Maryland and other states that allow customers to choose their energy supplier. MES' natural gas operations predominantly include sales to retail customers in Iowa and Illinois. Electricity and natural gas are purchased from producers and third-party energy marketing companies and sold directly to commercial, industrial and governmental end-users. MES does not own electricity or natural gas production assets but hedges its contracted sales obligations either with physical supply arrangements or financial products. As of December 31, 2020, MES' contracts in place for the sale of electricity totaled 16,549 GWhs with an average term of 2.7 years and for the sale of natural gas totaled 20,655,206 Dths with an average term of 1.2 years. In addition, MES manages natural gas supplies for a number of smaller commercial end-users, which includes the sale of natural gas to these customers to meet their supply requirements. Refer to Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.

GENERAL REGULATION

BHE's regulated subsidiaries and certain affiliates are subject to comprehensive governmental regulation, which significantly influences their operating environment, prices charged to customers, capital structure, costs and, ultimately, their ability to recover costs and earn a reasonable return on invested capital. In addition to the discussion contained herein regarding general regulation, refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion regarding certain regulatory matters.

Domestic Regulated Public Utility Subsidiaries

The Utilities are subject to comprehensive regulation by various state, federal and local agencies. The more significant aspects of this regulatory framework are described below.

State Regulation

Historically, state regulatory commissions have established retail electric and natural gas rates on a cost-of-service basis, which are designed to allow a utility the opportunity to recover what each state regulatory commission deems to be the utility's reasonable costs of providing services, including a fair opportunity to earn a reasonable return on its investments based on its cost of debt and equity. In addition to return on investment, a utility's cost of service generally reflects a representative level of prudent expenses, including cost of sales, operating expense, depreciation and amortization and income and other tax expense, reduced by wholesale electricity and other revenue. The allowed operating expenses are typically based on actual historical costs adjusted for known and measurable or forecasted changes. State regulatory commissions may adjust cost of service for various reasons, including pursuant to a review of: (a) the utility's revenue and expenses during a defined test period, (b) the utility's level of investment and (c) changes in income tax laws. State regulatory commissions typically have the authority to review and change rates on their own initiative; however, they may also initiate reviews at the request of a utility, utility customers or organizations representing groups of customers. In certain jurisdictions, the utility and such parties, however, may agree with one another not to request a review of or changes to rates for a specified period of time.

The retail electric rates of the Utilities are generally based on the cost of providing traditional bundled services, including generation, transmission and distribution services. The Utilities have established ECAMs and other cost recovery mechanisms in certain states, which help mitigate their exposure to changes in costs from those assumed in establishing base rates.

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With certain limited exceptions, the Utilities have an exclusive right to serve retail customers within their service territories and, in turn, have an obligation to provide service to those customers. In some jurisdictions, certain classes of customers may choose to purchase all or a portion of their energy from alternative energy suppliers, and in some jurisdictions retail customers can generate all or a portion of their own energy. Under Oregon law, PacifiCorp has the exclusive right and obligation to provide electricity distribution services to all residential and nonresidential customers within its allocated service territory; however, nonresidential customers have the right to choose an alternative provider of energy supply. The impact of this right on PacifiCorp's consolidated financial results has not been material. In Washington, state law does not provide for exclusive service territory allocation. PacifiCorp's service territory in Washington is surrounded by other public utilities with whom PacifiCorp has from time to time entered into service area agreements under the jurisdiction of the WUTC. Under California law, PacifiCorp has the exclusive right and obligation to provide electricity distribution services to all residential and nonresidential customers within its allocated service territory; however, cities, counties and certain other public agencies have the right to choose to generate energy supply or elect an alternative provider of energy supply through the formation of a Community Choice Aggregator ("EWG"CCA"). To date, no CCA activity has occurred in PacifiCorp's California service territory. If a CCA is formed, PacifiCorp would continue to provide CCA customers transmission, distribution, metering and billing services and the CCA would provide generation supply. In addition, PacifiCorp would likely be able to collect costs from CCA customers for the generation-related costs that PacifiCorp incurred while they were customers of PacifiCorp. PacifiCorp would remain the electricity provider of last resort for these customers. In Illinois, state law has established a competitive environment so that all Illinois customers are free to choose their retail service supplier. For customers that choose an alternative retail energy supplier, MidAmerican Energy continues to have an ongoing obligation to deliver the supplier's energy to the retail customer. MidAmerican Energy bills the retail customer for such delivery services. MidAmerican Energy also has an obligation to serve customers at regulated cost-based rates and has a continuing obligation to serve customers who have not selected a competitive electricity provider. The impact of this right on MidAmerican Energy's financial results has not been material. In Nevada, Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one MW or more to file a letter of intent and application with the PUCN to acquire electric energy and ancillary services from another energy supplier. The law requires customers wishing to choose a new supplier to receive the approval of the PUCN to meet public interest standards. In particular, departing customers must secure new energy resources that are not under contract to the Nevada Utilities, the departure must not burden the Nevada Utilities with increased costs or cause any remaining customers to pay increased costs and the departing customers must pay their portion of any deferred energy balances, all as determined by the PUCN. Also, the Utilities and the state regulatory commissions are individually evaluating how best to integrate private generation resources into their service and rate design, including considering such factors as maintaining high levels of customer safety and service reliability, minimizing adverse cost impacts and fairly allocating costs among all customers.

In Nevada, large natural gas customers using 12,000 therms per month with fuel switching capability are allowed to participate in the incentive natural gas rate tariff. Once a service agreement has been executed, a customer can compare natural gas prices under this tariff to alternative energy sources and choose its source of natural gas. In addition, natural gas customers using greater than 1,000 therms per day have the ability to secure their own natural gas supplies under the gas transportation tariff.

PacifiCorp

Rate Filings

Under Utah law, the UPSC must issue a written order within 240 days of a public utility's application for a general rate change. Absent an order, the proposed rates go into effect as filed and are not subject to refund, the UPSC may allow interim rates to take effect within 45 days of an application, subject to refund or surcharge, if an adequate prima facie showing is established in hearing that the interim rate change is justified.

The OPUC has the authority to suspend proposed new rates for a period not to exceed more than six months, with an additional three-month extension, beyond the 30-day time period when the new rates would otherwise go into effect. Absent suspension or other action from the OPUC, new rates automatically go into effect 30 days from filing by the utility. Upon suspension by the OPUC, the OPUC is authorized to allow collection of an interim rate, subject to refund, during the pendency of the OPUC's review of the rate request.

In Wyoming, the WPSC can allow interim rates to go into effect 30 days after the initial application but may require a bond to secure a refund for the amount. The WPSC may suspend the rates for final approval for a period not to exceed 10 months.

The WUTC has the authority to suspend proposed new rates, subject to hearing, for a period not to exceed 10 months beyond the 30-day time period when the new rate would otherwise go into effect.

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Under Idaho law, the IPUC can suspend a filing for an initial period not to exceed five months, and an additional extension of 60 days with a showing of good cause.

The CPUC has the authority to suspend proposed new rates, subject to hearing, for a period not to exceed 18 months. The CPUC may extend the suspension period on a case-by-case period.

Adjustment Mechanisms

In addition to recovery through base rates, PacifiCorp also achieves recovery of certain costs through various adjustment mechanisms as summarized below.
State RegulatorBase Rate Test PeriodAdjustment Mechanism
UPSC
Forecasted or historical with known and measurable changes(1)
EBA under which 100% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Wheeling revenue is also included in the mechanism. Beginning in 2021, the mechanism includes a true-up of PTCs as well.
Balancing account to provide for 100% recovery or refund of the difference between the level of REC revenues included in base rates and actual REC revenues after adjusting for a REC incentive authorized by the UPSC.
Recovery mechanism for single capital investments that in total exceed 1% of existing rate base when a general rate case has occurred within the preceding 18 months.
Effective January 1, 2021, Wildland Fire Mitigation Balancing Account to recover operating expenses and capital expenditures incurred to implement PacifiCorp's Utah Wildland Fire Protection Plan incremental to those included in base rates.
OPUCForecastedPCAM under which 90% of the difference between forecasted net variable power costs and PTCs established under the annual TAM and actual net variable power costs and PTCs is deferred and reflected in future rates. The difference between the forecasted and actual net variable power costs and PTCs must fall outside of an established asymmetrical deadband, with a negative annual power cost variance deadband of $15 million; and a positive annual power cost variance deadband of $30 million and is subject to an earnings test of +/- 1% on PacifiCorp's allowed return on equity.
Annual TAM based on forecasted net variable power costs and PTCs.
RAC to recover the revenue requirement of new renewable resources and associated transmission costs that are not reflected in general rates.
Balancing account for proceeds from the sale of RECs.
Effective January 1, 2021, Annual Wildfire Mitigation and Vegetation Management Cost Recovery Mechanism approved for three years to recover vegetation management and wildfire mitigation operations and maintenance costs and wildfire mitigation capital costs, incremental to those included in base rates. Recovery is subject to performance metrics and earnings tests. After three years, the mechanism will be assessed to determine whether continued use is warranted.
WPSC
Forecasted or historical with known and measurable changes(1)
ECAM under which 70% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Chemical costs and start-up fuel costs are also included in the mechanism.
REC and SO2 revenue adjustment mechanism to provide for recovery or refund of 100% of any difference between actual REC and SO2 revenues and the level in rates.
WUTCHistorical with known and measurable changesPCAM under which the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates after applying a $4 million deadband for positive or negative net power cost variances. For net power cost variances between $4 million and $10 million, amounts to be recovered from customers are allocated 50/50 and amounts to be credited to customers are allocated 75/25 (customers/PacifiCorp). Positive or negative net power cost variances in excess of $10 million are allocated 90/10 (customers/PacifiCorp).
Deferral mechanism of costs for up to 24 months of new base load generation resources and eligible renewable resources and related transmission that qualify under the state's emissions performance standard and are not reflected in base rates.
REC revenue tracking mechanism to provide credit of 100% of REC revenues to customers.
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Decoupling mechanism under which the difference between actual annual revenues and authorized revenues per customer is deferred and reflected in future rates, subject to an earnings test. Under the earnings test, 50% of any excess earnings over PacifiCorp's authorized return on equity is returned to customers in addition to any surcharge or surcredit related to the revenue variance. The earnings test is asymmetrical and adjustments are not made when PacifiCorp earns at or below authorized returns on equity. To trigger a rate adjustment, the deferral balance must exceed plus or minus 2.5% of the authorized revenue at the end of each deferral period by rate class. Rate adjustments must not exceed a surcharge of 5% of the actual normalized revenue by class.
IPUCHistorical with known and measurable changesECAM under which 90% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Also provides for recovery or refund of 100% of the difference between the level of REC revenues included in base rates and actual REC revenues and differences in actual PTCs compared to the amount in base rates.
CPUCForecastedPTAM for major capital additions that allows for rate adjustments outside of the context of a traditional general rate case for the revenue requirement associated with capital additions exceeding $50 million on a total-company basis. Filed as eligible capital additions are placed into service.
ECAC that allows for an annual update to actual and forecasted net power costs.
PTAM for attrition, a mechanism that allows for an annual adjustment to costs other than net power costs.
Catastrophic Events Memorandum Account for catastrophic events, allows for deferral and cost recovery of reasonable costs incurred as the result of catastrophic events, which are events for which a state or federal agency has declared a state of emergency.
Fire Risk Mitigation Memorandum Account to track costs related to wildfire mitigation activities incremental to what is in base rates and Wildfire Mitigation Plan Memorandum Account to track costs associated with the implementation of PacifiCorp's approved wildfire mitigation plan.

(1)PacifiCorp has relied on both historical test periods with known and measurable adjustments, as well as forecasted test periods.

MidAmerican Energy

Rate Filings

Under Iowa law, there are two options for temporary collection of higher rates following the filing of a request for a base rate increase. Collection can begin, subject to refund, either (1) within 10 days of filing, without IUB review, or (2) 90 days after filing, with approval by the IUB, depending upon the ratemaking principles and precedents utilized. In either case, if the IUB has not issued a final order within ten months after the filing date, the temporary rates become final and any difference between the requested rate increase and the temporary rates may then be collected subject to refund until receipt of a final order. Under Illinois law, new base rates may become effective 45 days after the filing of a request with the ICC, or earlier with ICC approval. The ICC has authority to suspend the proposed new rates, subject to hearing, for a period not to exceed approximately eleven months after filing. South Dakota law authorizes the South Dakota Public Utilities Commission to suspend new base rates for up to six months during the pendency of rate proceedings; however, a utility may implement all or a portion of the proposed new rates six months after the filing of a request for a rate increase subject to refund pending a final order in the proceeding.

Iowa law also permits rate-regulated utilities to seek ratemaking principles with the IUB prior to the construction of certain types of new generating facilities. Pursuant to this law, MidAmerican Energy has applied for and obtained IUB ratemaking principles orders for a 484-MW (MidAmerican Energy's share) coal-fueled generating facility, a 495-MW combined cycle natural gas-fueled generating facility and 6,639 MWs (nominal ratings) of wind-powered generating facilities as of December 31, 2020. These ratemaking principles established cost caps for the projects, below which such costs are deemed prudent by the IUB, and authorized a fixed rate of return on equity for the respective generating facilities over the regulatory life of the facilities in any future Iowa rate proceeding. As of December 31, 2020, the generating facilities in service totaled $8.4 billion, or 43%, of MidAmerican Energy's regulated property, plant and equipment, net and were subject to these ratemaking principles at a weighted average return on equity of 11.4% with a weighted average remaining life of 33 years.

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Ratemaking principles for several wind-powered generation projects have established mechanisms in Iowa where electric rate base may be reduced. The current revenue sharing mechanism originates from Wind XI and Wind XII ratemaking principles proceedings and reduces rate base for Iowa electric returns on equity exceeding an established benchmark. For 2018, sharing was triggered by MidAmerican Energy's actual equity return being above a threshold calculated annually in accordance with the IUB's 2016 Wind XI order. The threshold, not to exceed 11%, was the weighted average equity return of rate base with returns authorized via ratemaking principles proceedings and all other rate base. For all other rate base, the return is based on interest rates on 30-year A-rated utility bond yields plus 400 basis points, with a minimum return of 9.5%. In 2018 pursuant to this mechanism, MidAmerican Energy shared with customers 100% of the revenue in excess of the trigger. In December 2018, the IUB issued an order approving ratemaking principles related to MidAmerican Energy's Wind XII project. The ratemaking principles continued the revenue sharing mechanism for 2019 and beyond, maintaining the return on equity threshold for sharing and reducing the customer sharing percentage from 100% to 90%. A second mechanism, the retail customer benefit mechanism, reduces electric rate base for the value of higher cost retail energy displaced by covered wind-powered production and applies to the wind-powered generating facilities placed in-service in 2016 under the Wind X project and facilities constructed under the Wind XII project approved by the IUB in 2018. Rate base reductions under these mechanisms are applied to coal and other generation facilities in specified orders.

Adjustment Mechanisms

Under its current Iowa, Illinois and South Dakota electric tariffs, MidAmerican Energy is allowed to recover fluctuations in electric energy costs for its retail electric sales through fuel, or energy, cost adjustment mechanisms. The Iowa mechanism also includes PTCs associated with wind-powered generating facilities placed in-service prior to 2013, except for PTCs earned by repowered facilities. Eligibility for PTCs associated with MidAmerican Energy's earliest projects began expiring in 2014. Facilities currently earning PTCs that benefit customers through the Iowa energy adjustment clause totaled 1,000 MWs (nominal ratings) as of December 31, 2020, with the eligibility of those facilities to earn PTCs expiring by the end of 2022. Additionally, MidAmerican Energy has transmission adjustment clauses to recover certain transmission charges related to retail customers in all jurisdictions. The transmission adjustment mechanisms recover costs billed by the MISO for regional transmission service. The Illinois adjustment mechanism additionally recovers MidAmerican Energy's entire transmission revenue requirement attributable to Illinois. The adjustment mechanisms reduce the regulatory lag for the recovery of energy and transmission costs related to retail electric customers in these jurisdictions and accomplish, with limited timing differences, a pass-through of the related costs to these customers. Recoveries through these adjustment mechanisms are reflected in operating revenue, and the related costs are reflected in cost of fuel and energy, operations and maintenance expense or income tax benefit, as applicable.

Of the wind-powered generating facilities placed in-service as of December 31, 2020, 4,670 MWs (nominal ratings) have not been included in the determination of MidAmerican Energy's Iowa retail electric base rates. In accordance with the related ratemaking principles, until such time as these generation assets are reflected in base rates and ceasing thereafter, MidAmerican Energy will continue to reduce its revenue from Iowa energy adjustment clause recoveries by $12 million each calendar year.

MidAmerican Energy's cost of natural gas purchased for resale is collected for each jurisdiction through a uniform PGA, which is updated monthly to reflect changes in actual costs. Subject to prudence reviews, the PGA accomplishes a pass-through of MidAmerican Energy's cost of natural gas purchased for resale to its customers and, accordingly, has no direct effect on net income.

MidAmerican Energy's electric and natural gas energy efficiency program costs are collected through bill riders that are adjusted annually based on actual and expected costs in accordance with the energy efficiency plans filed with and approved by the respective state regulatory commission. As such, the energy efficiency program costs, which are reflected in operations and maintenance expense, and related recoveries, which are reflected in operating revenue, have no direct impact on net income.

MidAmerican Energy has income tax rider mechanisms in Iowa and Illinois that were established in response to 2017 Tax Reform, which enacted significant changes to the Internal Revenue Code, including, among other things, a reduction in the United States federal corporate income tax rate from 35% to 21%. South Dakota implemented changes to base rates in response to 2017 Tax Reform. As a result of 2017 Tax Reform, MidAmerican Energy re-measured its accumulated deferred income tax balances at the 21% rate and increased regulatory liabilities pursuant to the approved mechanisms. In December 2018, the IUB approved in final form a tax expense revision mechanism that reduces customer electric rates for the impact of the lower income tax rate on current operations, as calculated annually, and defers the amortization of excess accumulated deferred income taxes created by their re-measurement at the 21% income tax rate to a regulatory liability, the disposition of which will be determined in MidAmerican Energy's next rate case. In 2018, Iowa Senate File 2417 was signed into law, which, among other items, reduces the state of Iowa corporate tax rate from 12% to 9.8% effective in 2021, at which time, the impacts of Iowa Senate File 2417 will be included in the Iowa tax expense revision mechanism.
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NV Energy (Nevada Power and Sierra Pacific)

Rate Filings

Nevada statutes require the Nevada Utilities to file electric general rate cases at least once every three years with the PUCN. Sierra Pacific may also file natural gas general rate cases with the PUCN. The Nevada Utilities are also subject to a two-part fuel and purchased power adjustment mechanism. The Nevada Utilities make quarterly filings to reset the BTERs, based on the last 12 months of fuel and purchased power costs. The difference between actual fuel and purchased power costs and the revenue collected in the BTERs is deferred into a balancing account. The DEAA rate clears amounts deferred into the balancing account. Nevada regulations allow an electric or natural gas utility that adjusts its BTERs on a quarterly basis to request PUCN approval to make quarterly changes to its DEAA rate if the request is in the public interest. During required annual DEAA proceedings, the prudence of fuel and purchased power costs is reviewed, and if any costs are disallowed on such grounds, the disallowances will be incorporated into the next quarterly BTERs change. Also, on an annual basis, the Nevada Utilities (a) seek a determination that energy efficiency program expenditures were reasonable, (b) request that the PUCN reset base and amortization EEPR, and (c) request that the PUCN reset base and amortization EEIR.

            EEPR and EEIR

EEPR was established to allow the Nevada Utilities to recover the costs of implementing energy efficiency programs and EEIR was established to offset the negative impacts on revenue associated with the successful implementation of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared by the Nevada Utilities and approved by the PUCN in the IRP proceedings. When the Nevada Utilities' regulatory earned rate of return for a calendar year exceeds the regulatory rate of return used to set base tariff general rates, they are obligated to refund energy efficiency implementation revenue previously collected for that year.

            Net Metering

Nevada enacted Assembly Bill 405 ("AB 405") on June 15, 2017. The legislation, among other things, established net metering crediting rates for private generation customers with installed net metering systems less than 25 kilowatts. Under AB 405, private generation customers will be compensated at 95% of the rate the customer would have paid for a kilowatt-hour of electricity supplied by the Nevada Utilities for the first 80 MWs of cumulative installed capacity of all net metering systems in Nevada, 88% of the rate for the next 80 MWs, 81% of the rate for the next 80 MWs and 75% of the rate for any additional private generation capacity. As of December 31, 2020, the cumulative installed and applied-for capacity of net metering systems under AB 405 in Nevada was 300 MWs.

            Natural Disaster Protection Plan

Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law on May 22, 2019. The legislation requires the Nevada Utilities to submit a natural disaster protection plan to the PUCN. The PUCN adopted natural disaster protection plan regulations on January 29, 2020, that require the Nevada Utilities to file their natural disaster protection plan for approval on or before March 1 of every third year. The regulations also require annual updates to be filed on or before September 1 of the second and third years of the plan. The plan must include procedures, protocols and other certain information as it relates to the efforts of the Nevada Utilities to prevent or respond to a fire or other natural disaster. The expenditures incurred by the Nevada Utilities in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with the Nevada Utilities filing an application for recovery on or before March 1 of each year. The Nevada Utilities submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures on February 28, 2020.

Federal Regulation

The FERC is an independent agency with broad authority to implement provisions of the Federal Power Act, the Natural Gas Act ("NGA"), the Energy Policy Act whileof 2005 ("Energy Policy Act") and other federal statutes. The FERC regulates rates for wholesale sales of electricity; transmission of electricity, including pricing and regional planning for the Imperial Valleyexpansion of transmission systems; electric system reliability; utility holding companies; accounting and Wailuku independent power projects are currently certified as Qualifying Facilities ("QF")records retention; securities issuances; construction and operation of hydroelectric facilities; and other matters. The FERC also has the enforcement authority to assess civil penalties of up to $1.3 million per day per violation of rules, regulations and orders issued under the Public Utility Regulatory PoliciesFederal Power Act. The Utilities have implemented programs and procedures that facilitate and monitor compliance with the FERC's regulations described below. MidAmerican Energy is also subject to regulation by the NRC pursuant to the Atomic Energy Act of 1978. Both EWGs1954, as amended ("Atomic Energy Act"), with respect to its ownership interest in the Quad Cities Station.
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Wholesale Electricity and QFsCapacity

The FERC regulates the Utilities' rates charged to wholesale customers for electricityand transmission capacity and related services. Much of the Utilities' wholesale electricity sales and purchases occur under market-based pricing allowed by the FERC and are generally exempttherefore subject to market volatility. The Utilities are precluded from compliance with extensive federalselling at market-based rates in the PacifiCorp-East, PacifiCorp-West, Nevada Utilities, Idaho Power Company and state regulations that control the financial structure of an electric generating plantNorthWestern Energy balancing authority areas. Wholesale electricity sales in those specific balancing authority areas are permitted at cost-based rates. PacifiCorp and the prices and termsNevada Utilities have been granted the authority to bid into the California EIM at which electricity may be sold by the facilities.market-based rates.


The Yuma, Cordova, Saranac, Imperial Valley, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Marshall, Grande Prairie and Pinyon Pines independent power projects have obtained authority from the FERC to sell their power using market-based rates. ThisUtilities' authority to sell electricity in wholesale electricity markets at market-based rates is subject to triennial reviews conducted by the FERC. Accordingly, the respective independent power projectsUtilities are required to submit triennial filings to the FERC that demonstrate a lack of market power over sales of wholesale electricity and electric generation capacity in their respective market areas. The Pinyon Pines, Solar Star, TopazPacifiCorp, the Nevada Utilities and Yuma independent power projects and power marketer CalEnergy, LLCcertain affiliates, representing the BHE Northwest Companies, file together for market power study purposes of the FERC-defined Southwest Region.purposes. The BHE Northwest Companies' most recent triennial filing for the Southwest Region was made in June 20162019 and an order accepting it was issued December 2016. The Cordova and Saranac independent power projects and power marketer CalEnergy, LLC file together within June 2020. MidAmerican Energy and certain affiliates file together for market power study purposes of the FERC-defined Northeast Region. The most recent triennial filing for the Northeast Region was made in June 20172020 and an order accepting it was issued in January 2018. The Bishop Hill II independent power project and power marketer CalEnergy, LLC file together withis under review by the FERC. MidAmerican Energy and certain affiliates file together for market power study purposes of the FERC-defined Central Region. The most recent triennial filing for the Central Region was made in December 20172020 and is currently pendingunder review by the FERC. Under the FERC's market-based rules, the Utilities must also file with the FERC.

The entire outputFERC a notice of Jumbo Road, Alamo 6, Pearl and Power Resourceschange in status when there is withina change in the Electric Reliability Council of Texas ("ERCOT") and market-based authority is not required for such sales solely within ERCOT asconditions that the ERCOT market is not a FERC-jurisdictional market. Similarly, Wailuku sells its output solely to the Hawaii Electric Company within the Hawaii electric grid which is not a FERC-jurisdictional market and Wailuku therefore does not requireFERC relied upon in granting market-based rate authority.


EWGsTransmission

PacifiCorp's and the Nevada Utilities' wholesale transmission services are permittedregulated by the FERC under cost-based regulation subject to sell capacityPacifiCorp's and electricity only in the wholesale markets, not to end users. Additionally, utilitiesNevada Utilities' OATT. These services are required to purchase electricity produced by QFs at a price that does not exceed the purchasing utility's "avoided cost" and to sell back-up power to the QFsoffered on a non-discriminatory basis, unless theywhich means that all potential customers are provided an equal opportunity to access the transmission system. PacifiCorp's and the Nevada Utilities' transmission business is managed and operated independently from its wholesale marketing business in accordance with the FERC's Standards of Conduct. PacifiCorp and the Nevada Utilities have successfully petitionedmade several required compliance filings in accordance with these rules.

In December 2011, PacifiCorp adopted a cost-based formula rate under its OATT for its transmission services. Cost-based formula rates are intended to be an effective means of recovering PacifiCorp's investments and associated costs of its transmission system without the need to file rate cases with the FERC, for an exemption from this purchase requirement. Avoided cost is defined generally asalthough the price at which the utility could purchase or produce the same amount of power from sources other than the QF on a long-term basis. The Energy Policy Act eliminated the purchase requirement for utilities with respect to new contracts under certain conditions. New QF contractsformula rate results are also subject to discovery and challenges by the FERC rate filing requirements, unlike QF contracts entered into priorand intervenors. A significant portion of these services are provided to PacifiCorp's energy supply management function.

MidAmerican Energy participates in the MISO as a transmission-owning member. Accordingly, the MISO is the transmission provider under its FERC-approved OATT. While the MISO is responsible for directing the operation of MidAmerican Energy's transmission system, MidAmerican Energy retains ownership of its transmission assets and, therefore, is subject to the FERC's reliability standards discussed below. MidAmerican Energy's transmission business is managed and operated independently from its wholesale marketing business in accordance with the FERC Standards of Conduct.

MidAmerican Energy Policy Act. FERC regulations also permit QFsconstructed and utilitiesowns four Multi-Value Projects ("MVPs") located in Iowa and Illinois that added approximately 250 miles of 345-kV transmission line to negotiate agreementsMidAmerican Energy's transmission system since 2012. The MISO OATT allows for utility purchasesbroad cost allocation for MidAmerican Energy's MVPs, including similar MVPs of power at rates other thanMISO participants. Accordingly, a significant portion of the utilities' avoided cost.revenue requirement associated with MidAmerican Energy's MVP investments is shared with other MISO participants based on the MISO's cost allocation methodology, and a portion of the revenue requirement of the other participants' MVPs is allocated to MidAmerican Energy. The transmission assets and financial results of MidAmerican Energy's MVPs are excluded from the determination of its retail electric rates.


The Philippine CongressFERC has passedestablished an extensive number of mandatory reliability standards developed by the ElectricNERC and the WECC, including planning and operations, critical infrastructure protection and regional standards. Compliance, enforcement and monitoring oversight of these standards is carried out by the FERC; the NERC; and the WECC for PacifiCorp, Nevada Power, Industry Reformand Sierra Pacific; and the Midwest Reliability Organization for MidAmerican Energy.


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Hydroelectric

The FERC licenses and regulates the operation of hydroelectric systems, including license compliance and dam safety programs. Most of PacifiCorp's hydroelectric generating facilities are licensed by the FERC as major systems under the Federal Power Act, and certain of 2001 ("EPIRA"), whichthese systems are licensed under the Oregon Hydroelectric Act. Under the Federal Power Act, 20 developments associated with PacifiCorp's hydroelectric generating facilities licensed with the FERC are classified as "high hazard potential," meaning it is aimed at restructuring the Philippine power industry, privatizing the National Power Corporation and introducing a competitive electricity market, among other initiatives. The implementation of EPIRA may impact future operationsprobable in the Philippinesevent of a dam failure that loss of human life in the downstream population could occur. The FERC provides guidelines utilized by PacifiCorp in development of public safety programs consisting of a dam safety program and the Philippine power industry as a whole, the effect of which is not yet known as changes resulting from EPIRA are ongoing.emergency action plans.


Residential Real Estate Brokerage Company

HomeServices is regulated by the United States Bureau of Consumer Financial Protection under the Truth In Lending Act ("TILA") and the Real Estate Settlement Procedures Act ("RESPA"); the United States Federal Trade Commission with respect to certain franchising activities; and by state agencies where it operates. TILA primarily governs the real estate lending process by mandating lenders to fully inform borrowers about loan costs. RESPA primarily governs the real estate settlement process by mandating all parties fully inform borrowers about all closing costs, lender servicing and escrow account practices and business relationships between closing service providers and other parties to the transaction.

REGULATORY MATTERS

In addition to the discussion contained hereinFor an update regarding regulatory matters,PacifiCorp's Klamath River hydroelectric system, refer to "General Regulation"Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 18 of this Form 10-K for further discussion regarding the general regulatory framework.

PacifiCorp

In June 2017, PacifiCorp filed two applications each with the UPSC, IPUC and the WPSC for the Energy Vision 2020 project. The first application sought approvals to construct or procure four new Wyoming wind resources with a total capacity of 860 MWs identified as benchmark resources and certain transmission facilities. A request for proposals was issued in September 2017 seeking up to 1,270 MWs to compete against PacifiCorp's benchmark resources in the final resource selection process for the project. PacifiCorp has identified four winning wind resource bids from this solicitation totaling 1,311 MWs, consisting of 1,111 MWs owned and 200 MW as a power-purchase agreement. The combined new wind and transmission projects will cost approximately $2 billion. Hearings are expected to be set by the WPSC, UPSC, and IPUC to occur in the second quarter of 2018. The second application sought approval of PacifiCorp's resource decision to upgrade or "repower" existing wind resources, as prudent and in the public interest. PacifiCorp estimates the wind repowering project will cost approximately $1 billion. Applications filed in Utah, Idaho, and Wyoming seek approval for the proposed rate-making treatment associated with the projects. The hearings on repowering in Utah and Wyoming have been extended to provide time for supplemental analyses for updated costs and the Tax Cuts and Jobs Act enacted on December 22, 2017 ("2017 Tax Reform") and are scheduled to occur in April and May 2018. On December 28, 2017, the IPUC approved an all-party stipulation for approval of the application to repower existing wind facilities and allow recovery of costs in rates through an adjustment to the annual ECAM filing.

The 2017 Tax Reform enacted significant changes to the Internal Revenue Code, including, among other things, a reduction in the U.S. federal corporate income tax rate from 35% to 21%. PacifiCorp has agreed to defer the impact of the tax law change with each of its state rate regulatory bodies. PacifiCorp will be proposing to reduce customer rates for a portion of the lower annual income tax expense resulting from the decrease in federal tax rates, and deferring the remainder to offset other costs as approved by the regulatory bodies. PacifiCorp cannot predict the timing or ultimate outcome of regulatory actions on its proposals.

Utah Mine Disposition

In December 2014, PacifiCorp filed an advice letter with the CPUC to request approval to sell certain Utah mining assets and to establish memorandum accounts to track the costs associated with the Utah Mine Disposition for future recovery. In July 2015, the CPUC Energy Division issued a letter requiring PacifiCorp to file a formal application for approval of the sale of certain Utah mining assets. Accordingly, in September 2015, PacifiCorp filed an application with the CPUC. On February 6, 2017, a joint motion was filed with the CPUC seeking approval of a settlement agreement reached by PacifiCorp and all other parties. The agreement states, among other things, that the decision to sell certain Utah mining assets is in the public interest. Parties also reserve their rights to additional testimony, briefs and hearings to the extent the CPUC determines that additional California Environmental Quality Act proceedings are necessary. A CPUC decision on the joint motion and settlement agreement is expected in 2018.

For additional information related to the accounting impacts associated with the Utah Mine Disposition, refer to Notes 5 and 9Note 14 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K.



Nuclear Regulatory Commission
Utah

    General
In March 2017, PacifiCorp filed
MidAmerican Energy is subject to the jurisdiction of the NRC with respect to its annual EBAlicense and 25% ownership interest in Quad Cities Station. Exelon Generation, the operator and 75% owner of Quad Cities Station, is under contract with MidAmerican Energy to secure and keep in effect all necessary NRC licenses and authorizations.

The NRC regulates the granting of permits and licenses for the construction and operation of nuclear generating stations and regularly inspects such stations for compliance with applicable laws, regulations and license terms. Current licenses for Quad Cities Station provide for operation until December 14, 2032. The NRC review and regulatory process covers, among other things, operations, maintenance and environmental and radiological aspects of such stations. The NRC may modify, suspend or revoke licenses and impose civil penalties for failure to comply with the UPSC seeking approvalAtomic Energy Act, the regulations under such Act or the terms of such licenses.

Federal regulations provide that any nuclear operating facility may be required to refundcease operation if the NRC determines there are deficiencies in state, local or utility emergency preparedness plans relating to customers $7 million in deferred net power costssuch facility, and the deficiencies are not corrected. Exelon Generation has advised MidAmerican Energy that an emergency preparedness plan for Quad Cities Station has been approved by the NRC. Exelon Generation has also advised MidAmerican Energy that state and local plans relating to Quad Cities Station have been approved by the Federal Emergency Management Agency.

The NRC also regulates the decommissioning of nuclear-powered generating facilities, including the planning and funding for the periodeventual decommissioning of the facilities. In accordance with these regulations, MidAmerican Energy submits a biennial report to the NRC providing reasonable assurance that funds will be available to pay its share of the costs of decommissioning Quad Cities Station. MidAmerican Energy has established a trust for the investment of funds collected for nuclear decommissioning of Quad Cities Station.

Under the Nuclear Waste Policy Act of 1982 ("NWPA"), the United States DOE is responsible for the selection and development of repositories for, and the permanent disposal of, spent nuclear fuel and high-level radioactive wastes. Exelon Generation, as required by the NWPA, signed a contract with the DOE under which the DOE was to receive spent nuclear fuel and high-level radioactive waste for disposal beginning not later than January 1, 2016 through1998. The DOE did not begin receiving spent nuclear fuel on the scheduled date and remains unable to receive such fuel and waste. The costs to be incurred by the DOE for disposal activities were previously being financed by fees charged to owners and generators of the waste. In accordance with a 2013 ruling by the D.C. Circuit, the DOE, in May 2014, provided notice that, effective May 16, 2014, the spent nuclear fuel disposal fee would be zero. In 2004, Exelon Generation, reached a settlement with the DOE concerning the DOE's failure to begin accepting spent nuclear fuel in 1998. As a result, Quad Cities Station has been billing the DOE, and the DOE is obligated to reimburse the station for all station costs incurred due to the DOE's delay. Exelon Generation has constructed an interim spent fuel storage installation ("ISFSI") at Quad Cities Station consisting of two pads to store spent nuclear fuel in dry casks in order to free space in the storage pool. The first dry cask was placed in-service in 2005. As of December 31, 2016, reflecting2020, the difference between basefirst pad at the ISFSI is full, and actual net power coststhe second pad is in operation. The first and second pads at the ISFSI are expected to facilitate storage of casks to support operations at Quad Cities Station through the end of its operating licenses.

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Nuclear Insurance

MidAmerican Energy maintains financial protection against catastrophic loss associated with its interest in Quad Cities Station through a combination of insurance purchased by Exelon Generation, insurance purchased directly by MidAmerican Energy, and the mandatory industry-wide loss funding mechanism afforded under the Price-Anderson Amendments Act of 1988 ("Price-Anderson"), which was amended and extended by the Energy Policy Act. The general types of coverage maintained are: nuclear liability, property damage or loss and nuclear worker liability, as discussed below.

Exelon Generation purchases private market nuclear liability insurance for Quad Cities Station in the 2016 deferral period.maximum available amount of $450 million, which includes coverage for MidAmerican Energy's ownership. In April 2017, PacifiCorp revisedaccordance with Price-Anderson, excess liability protection above that amount is provided by a mandatory industry-wide Secondary Financial Protection program under which the licensees of nuclear generating facilities could be assessed for liability incurred due to a serious nuclear incident at any commercial nuclear reactor in the United States. Currently, MidAmerican Energy's aggregate maximum potential share of an assessment for Quad Cities Station is approximately $69 million per incident, payable in installments not to exceed $10 million annually.

The insurance for nuclear property damage losses covers property damage, stabilization and decontamination of the facility, disposal of the decontaminated material and premature decommissioning arising out of a covered loss. For Quad Cities Station, Exelon Generation purchases primary property insurance protection for the combined interests in Quad Cities Station, with coverage limits for nuclear damage losses up to $1.5 billion and non-nuclear damage losses up to $500 million. MidAmerican Energy also directly purchases extra expense coverage for its recommendationshare of replacement power and requested approval to refundother extra expenses in the event of a covered accidental outage at Quad Cities Station. The property and related coverages purchased directly by MidAmerican Energy and by Exelon Generation, which includes the interests of MidAmerican Energy, are underwritten by an additional $7 million to customers resulting in an interim rate reduction of $14 million. The rate change became effective on an interim basis May 1, 2017. In January 2018, the UPSC approved a stipulation that provides an additional $3 million reduction, which will be incorporated into the 2018 EBA filingindustry mutual insurance company and contain provisions for retrospective premium assessments to be made in March 2018.called upon based on the industry mutual board of directors' discretion for adverse loss experience. Currently, the maximum retrospective amounts that could be assessed against MidAmerican Energy from industry mutual policies for its obligations associated with Quad Cities Station total $7 million.


In March 2017, PacifiCorp filed its annual REC balancing account applicationThe master nuclear worker liability coverage, which is purchased by Exelon Generation for Quad Cities Station, is an industry-wide guaranteed-cost policy with the UPSC seeking to refund to customers $1an aggregate limit of $450 million for the period January 1, 2016 through December 31, 2016nuclear industry as a whole, which is in effect to cover tort claims of workers in nuclear-related industries.

United States Mine Safety

PacifiCorp's mining operations are regulated by the Federal Mine Safety and Health Administration, which administers federal mine safety and health laws and regulations, and state regulatory agencies. The Federal Mine Safety and Health Administration has the statutory authority to institute a civil action for relief, including a temporary or permanent injunction, restraining order or other appropriate order against a mine operator who fails to pay penalties or fines for violations of federal mine safety standards. Federal law requires PacifiCorp to have a written emergency response plan specific to each underground mine it operates, which is reviewed by the Federal Mine Safety and Health Administration every six months, and to have at least two mine rescue teams located within one hour of each mine. Information regarding PacifiCorp's mine safety violations and other legal matters disclosed in accordance with Section 1503(a) of the Dodd-Frank Reform Act is included in Exhibit 95 to this Form 10-K.

Interstate Natural Gas Pipeline Subsidiaries

The Pipeline Companies are regulated by the FERC, pursuant to the NGA and the Natural Gas Policy Act of 1978. Under this authority, the FERC regulates, among other items, (a) rates, charges, terms and conditions of service, (b) the construction and operation of interstate pipelines, storage and related facilities, including the extension, expansion or abandonment of such facilities and (c) the construction and operation of LNG import/export facilities. The Pipeline Companies hold certificates of public convenience and necessity and LNG facility authorizations issued by the FERC, which authorize them to construct, operate and maintain their pipeline and related facilities and services.


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FERC regulations and the Pipeline Companies' tariffs allow each of the Pipeline Companies to charge approved rates for the differenceservices set forth in base and actual RECs. The rate change became effective on an interim basis June 1, 2017.

Astheir respective tariffs. Generally, these rates are a resultfunction of the Utah Sustainable Transportationcost of providing services to customers, including prudently incurred operations and Energy Plan legislationmaintenance expenses, taxes, depreciation and amortization and a reasonable return on invested capital. Tariff rates for each of the Pipeline Companies have been developed under a rate design methodology whereby substantially all fixed costs, including a return on invested capital and income taxes, are collected through reservation charges, which are paid by firm transportation and storage customers regardless of volumes shipped. Commodity charges, which are paid only with respect to volumes actually shipped, are designed to recover the remaining, primarily variable, costs. Kern River's reservation rates have historically been approved using a "levelized" cost-of-service methodology so that was signed into law in March 2016, PacifiCorp filed an application in September 2016 seeking approval of a proposed five-year pilot program with an annual budget of $10 million authorized under the legislation to address clean-coal technology programs, commercial line extension programs, an electric vehicle incentive program and associated residential time of use rate pilot and other programs authorized in legislation. The UPSC issued orders approving PacifiCorp's application in phases in December 2016, May 2017, June 2017 and October 2017.

In November 2016, PacifiCorp filedremains constant over the levelization period. This levelized cost of service analyses,has been achieved by using a FERC-approved depreciation schedule in which depreciation increases as ordered by the UPSC, to quantify the cost shifting due to net metering. The UPSC ordered the analyses to comply with a 2014 law requiring the examination of whether the costs of net metering exceed the benefits to PacifiCorp and other customers. The filing includes a proposal for a new rate schedule for residential customer generators with a three-part rate based on the cost of serving this classcapital decreases on declining rate base. Each of customer, which will mitigatethe Pipeline Companies also hold authority to negotiate rates for their services, subject to requirements to offer cost-based rate alternatives, and to publish such negotiated rates.In addition, for services that are not subject to FERC rate jurisdiction pursuant to Section 3 of the Natural Gas Act, Cove Point charges rates that are established by contract.

The Pipeline Companies' rates are subject to change in future cost shifting. PacifiCorp proposedgeneral rate proceedings. Rates for natural gas pipelines are changed by filings under either Section 5 or Section 4 of the Natural Gas Act. Section 5 proceedings are initiated by the FERC or the pipeline's customers for a potential reduction to rates that the new rate schedule only apply to new net metering customers that submit applications after December 9, 2016. On December 9, 2016, PacifiCorp requestedFERC finds are no longer just and reasonable. In a Section 5 proceeding, the initiating party has the burden of demonstrating that the currently effective date for the start of a transitional tariff be suspended while it works with stakeholders on a collaborative process to resolve net metering rate design issues. The filing also requests an increase in the application fees for net metering. In February 2017, the UPSC ruled on motions to dismiss and requests for a show cause order for a regulatory rate review filed by various parties to the docket and denied the motions. On August 28, 2017, PacifiCorp filed a settlement stipulation in the net metering proceeding. The stipulation provides for the closurerates of the net metering program to new entrants on November 15, 2017, with a transition to a new program that provides a separate compensationpipeline are no longer just and reasonable, and of demonstrating alternative just and reasonable rates. Any rate for exported power. All net metering customers, including those with a submitted application, as of November 15, 2017, will be grandfathered into the current program until January 1, 2036. A new proceeding will be initiated to establish a methodology for the determination of the export credit for new customers. During this period, a transition program for new customers will commence November 15, 2017, for a limited number of customers. Beginning December 1, 2017, PacifiCorp began accepting applications for the new transition program for private generation customers. Residential and non-residential private generation customers in the transition program will be compensated for exported energy at 90% and 92.5% of the current average energy rates, respectively. The rates for the exported energy will be fixed through January 1, 2033 for these transition program customers. The new residential and non-residential transition program customers' compensation will be only available for the first 170 MW and 70 MW, respectively. The stipulation also includes an agreement to support a two-year extension on the state tax credit for residential solar installations. A hearing on the stipulation was held on September 18, 2017, and an order approving it was issued September 29, 2017.

Oregon

In March 2017, PacifiCorp submitted its filing for the annual TAM filing in Oregon requesting an annual increase of $18 million, or an average price increase of 1.5%, based on forecasted net power costs and loads for calendar year 2018. Consistent with Oregon Senate Bill 1547, the filing includes an update of the impact of expiring production tax credits, which accounts for $6 million of the total rate adjustment. In October 2017, the OPUC issued an order approving PacifiCorp's request with some minor adjustments to the NPC modeling. PacifiCorp submitted the final update in November 2017 which reflected a rate increase of $2 million, or an average price increase of 0.2%, effective January 2018.

Wyoming

In April 2017, PacifiCorp filed its annual ECAM, REC and RRA applications with the WPSC. The ECAM filing requests approval to refund to customers $5 million in deferred net power costs for the period January 1, 2016 through December 31, 2016, and the RRA application requests approval to refund to customers $1 million. In June 2017, the WPSC approved the ECAM, REC and RRA rates on an interim basis. In November 2017, a stipulation was filed resolving all issues in the proceeding. The stipulation results in an additional refund to customers of $1 million in 2017. The WPSC approved the stipulation at the hearing on November 28, 2017.

Washington

In August 2017, PacifiCorp submitted a compliance filing to implement the second-year rate increase approved as part of the two-year rate plan in the 2015 regulatory rate review. The compliance filing included rates based on the $8 million, or 2.3%, increase ordered by the WUTC in September 2016. The compliance filing was approved by the WUTC on September 14, 2017, with rates effective September 15, 2017. On December 1, 2017, PacifiCorp submitted a tariff filing to implement the first price change for the decoupling mechanism approved in PacifiCorp's 2015 regulatory rate review. WUTC staff disputed PacifiCorp's interpretation of the WUTC's order for the decoupling mechanism and PacifiCorp's subsequent calculations requesting additional funds be booked for return to customers. In February 2018, the WUTC granted the staff's motions and rejected PacifiCorp's tariff revision and required that PacifiCorp re-file price changes for its decoupling mechanism.

Idaho

In January 2017, a $1 million, or 0.4%, decrease in base rates became effective as a result of a Section 5 proceeding is implemented prospectively upon the issuance of a final FERC order adopting the new just and reasonable rates. Section 4 rate proceedings are initiated by the natural gas pipeline, who must demonstrate that the new proposed rates are just and reasonable. The new rates as a result of a Section 4 proceeding are typically implemented six months after the Section 4 filing and are subject to refund upon issuance of a final order by the FERC.

The FERC-regulated natural gas companies may not grant undue preference to any customer. FERC regulations require that certain information be made public for market access, through standardized internet websites.These regulations also restrict each pipeline's marketing affiliates' access to certain non-public information that could affect price or availability of service.

Interstate natural gas pipelines are also subject to regulations administered by the Office of Pipeline Safety within the Pipeline and Hazardous Materials Safety Administration, an agency of the United States Department of Transportation ("DOT"). Federal pipeline safety regulations are issued pursuant to the Natural Gas Pipeline Safety Act of 1968, as amended ("NGPSA"), which establishes safety requirements in the design, construction, operation and maintenance of interstate natural gas facilities, and requires an entity that owns or operates pipeline facilities to comply with such plans. Major amendments to the NGPSA include the Pipeline Safety Improvement Act of 2002 ("2002 Act"), the Pipeline Inspection, Protection, Enforcement and Safety Act of 2006 ("2006 Act"), the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 ("2011 Act") and the Protecting Our Infrastructure Of Pipelines And Enhancing Safety Act Of 2016 ("2016 Act").

The 2002 Act established additional safety and pipeline integrity regulations for all natural gas pipelines in high-consequence areas. The 2002 Act imposed major new requirements in the areas of operator qualifications, risk analysis and integrity management. The 2002 Act mandated more frequent periodic inspection or testing of natural gas pipelines in high-consequence areas, which are locations where the potential consequences of a natural gas pipeline accident may be significant or may do considerable harm to persons or property. Pursuant to the 2002 Act, the DOT promulgated regulations that require natural gas pipeline operators to develop comprehensive integrity management programs, to identify applicable threats to natural gas pipeline segments that could impact high-consequence areas, to assess these segments and to provide ongoing mitigation and monitoring. The regulations require recurring inspections of high-consequence area segments every seven years after the initial baseline assessment.

The 2006 Act required pipeline operators to institute human factors management plans for personnel employed in pipeline control centers. DOT regulations published pursuant to the 2006 Act required development and implementation of written control room management procedures.

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The 2011 Act was a response to natural gas pipeline incidents, most notably the San Bruno natural gas pipeline explosion that occurred in September 2010 in California. The 2011 Act increased the maximum allowable civil penalties for violations, directs operator assistance for Federal authorities conducting investigations and authorized the DOT to hire additional inspection and enforcement personnel. The 2011 Act also directed the DOT to study several topics, including the definition of high-consequence areas, the use of automatic shutoff valves in high-consequence areas, expansion of integrity management requirements beyond high-consequence areas and cast iron pipe replacement. The studies are complete, and a number of notices of proposed rulemaking have been issued. The Pipeline and Hazardous Materials Safety Administration issued the Safety of Gas Transmission Pipelines: MAOP Reconfirmation, Expansion of Assessment Requirements and Other Related Amendments final rule in October 2019. The primary change is the expansion of the pipeline integrity assessment requirements to cover moderate-consequence areas and reconfirming maximum allowable operating pressures. Pipeline operators must develop procedures to address assessment requirements and define and map locations by mid-2021 and complete 50% of the required integrity testing by 2028 and the remaining testing by 2034. The BHE Pipeline Group is assessing the impact of the rule. This is the first of three parts of the anticipated new rules. Additional final rules are expected in 2021.

The 2016 Act required the Pipeline and Hazardous Materials Safety Administration to set federal minimum safety standards for underground natural gas storage facilities and authorized emergency order authority. In February 2020, the Pipeline and Hazardous Materials Safety Administration issued a final rule regarding underground natural gas storage facilities that incorporates by reference the American Petroleum Institute's Recommended Practice 1171, "Functional Integrity of Natural Gas Storage in Depleted Hydrocarbon Reservoirs and Aquifer Reservoirs", clarifies certain aspects of the mandatory nature of the standard and defines regulatory completion dates for underground storage facility risk assessments. EGTS has 17 underground natural gas storage fields that fall under this regulation and does not expect the impact of complying with the IPUCfinal rule to update net power costs in base rates inbe significant. Northern Natural Gas has three underground natural gas storage fields that fall under this regulation and is complying with the final rule. Kern River, Carolina Gas and Cove Point do not have underground natural gas storage facilities.

The DOT and related state agencies routinely audit and inspect the pipeline facilities for compliance with their regulations. The Pipeline Companies conduct internal audits of their facilities every four years with more frequent reviews of those deemed higher risk. The Pipeline Companies also conduct preliminary audits in advance of agency audits. Compliance issues that arise during these audits or during the normal course of business are addressed on a prior rate plan stipulation.

In March 2017, PacifiCorp filed its annual ECAM applicationtimely basis. The Pipeline Companies believe their pipeline systems comply in all material respects with the IPUC requesting recoveryNGPSA and with DOT regulations issued pursuant to the NGPSA.

Northern Powergrid Distribution Companies

The Northern Powergrid Distribution Companies, as holders of $8 million for deferred costs in 2016. This filing includes recoveryelectricity distribution licenses, are subject to regulation by GEMA. GEMA regulates distribution network operators ("DNOs") within the terms of the differenceElectricity Act 1989 and the terms of DNO licenses, which are revocable with 25 years notice. Under the Electricity Act 1989, GEMA has a duty to ensure that DNOs can finance their regulated activities and DNOs have a duty to maintain an investment grade credit rating. GEMA discharges certain of its duties through its staff within Ofgem. Each of fourteen licensed DNOs distributes electricity from the national grid transmission system and distribution-connected generators to end users within its respective distribution services area.

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DNOs are subject to price controls, enforced by Ofgem, that limit the revenue that may be recovered and retained from their electricity distribution activities. The regulatory regime that has been applied to electricity distributors in actual net power costsGreat Britain encourages companies to look for efficiency gains in order to improve profits. The distribution price control formula also adjusts the revenue received by DNOs to reflect a number of factors, including, but not limited to, the base level in rates, an adderrate of inflation (as measured by the United Kingdom's Retail Prices Index) and the quality of service delivered by the licensee's distribution system. The current price control, Electricity Distribution 1 ("ED1"), has been set for recoverya period of eight years, starting April 1, 2015, although the formula has been, and may be, reviewed by the regulator following public consultation. The procedure and methodology adopted at a price control review are at the reasonable discretion of Ofgem. Ofgem's judgment of the Lake Side 2 resource, recoveryfuture allowed revenue of Deer Creek longwall minelicensees is likely to take into account, among other things:
the actual operating and capital costs of each of the licensees;
the operating and capital costs that each of the licensees would incur if it were as efficient as, in Ofgem's judgment, the more efficient licensees;
the actual value of certain costs which are judged to be beyond the control of the licensees;
the taxes that each licensee is expected to pay;
the regulatory value ascribed to the expenditures that have been incurred in the past and the efficient expenditures that are to be incurred in the forthcoming regulatory period;
the rate of return to be allowed on expenditures that make up the regulatory asset value;
the financial ratios of each of the licensees and the license requirement for each licensee to maintain investment grade status;
an allowance in respect of the repair of the pension deficits in the defined benefit pension schemes sponsored by each of the licensees; and
any under- or over-recoveries of revenues, relative to allowed revenues, in the previous price control period.

A number of incentive schemes also operate within the current price control period to encourage DNOs to provide an appropriate quality of service to end users. This includes specified payments to be made for failures to meet prescribed standards of service. The aggregate of these guaranteed standards payments is uncapped, but may be excused in certain prescribed circumstances that are generally beyond the control of the DNOs.

A new price control can be implemented by GEMA without the consent of the DNOs, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's CMA, as can certain other parties. Any appeals must be notified within 20 working days of the license modification by GEMA. If the CMA determines that the appellant has relevant standing, then the statute requires that the CMA complete its process within six months, or in some exceptional circumstances seven months. The Northern Powergrid Distribution Companies appealed Ofgem's proposals for the resetting of the formula that commenced April 1, 2015, as did one other party, and the CMA subsequently revised GEMA's decision.

The current eight-year electricity distribution price control period runs from April 1, 2015 through March 31, 2023. The current price control was the first to be set for electricity distribution in Great Britain since Ofgem completed its review of network regulation (known as the RPI-X @ 20 project). The key changes to the price control calculations, compared to those used in previous price controls are that:
the period over which new regulatory assets are depreciated is being gradually lengthened, from 20 years to 45 years, with the change being phased over eight years;
allowed revenues will be adjusted during the price control period, rather than at the next price control review, to partially reflect cost variances relative to cost allowances;
the allowed cost of debt will be updated within the price control period by reference to a long-run trailing average based on external benchmarks of utility debt costs;
allowed revenues will be adjusted in relation to some new service standard incentives, principally relating to speed and service standards for new connections to the network; and
there was scope for a mid-period review and adjustment to revenues in the latter half of the period for any changes in production tax creditsthe outputs required of licensees for certain specified reasons, although GEMA made no adjustments under this provision.

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Under the current price control, as revised by the CMA, and renewable energy credits.excluding the effects of incentive schemes and any deferred revenues from the prior price control, the opening base allowed revenue of Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc remains constant in all subsequent years within the price control period (ED1) through 2022-23, before the addition of inflation. Nominal opening base allowed revenues will increase in line with inflation. Adjustments are made annually to recognize the effect of factors such as changes in the allowed cost of debt, performance on incentive schemes and catch up of prior year under- or over- recoveries.

Ofgem also monitors DNO compliance with license conditions and enforces the remedies resulting from any breach of condition. License conditions include the prices and terms of service, financial strength of the DNO, the provision of information to Ofgem and the public, as well as maintaining transparency, non-discrimination and avoidance of cross-subsidy in the provision of such services. Ofgem also monitors and enforces certain duties of a DNO set out in the Electricity Act 1989, including the duty to develop and maintain an efficient, coordinated and economical system of electricity distribution. Under changes to the Electricity Act 1989 introduced by the Utilities Act 2000, GEMA is able to impose financial penalties on DNOs that contravene any of their license duties or certain of their duties under the Electricity Act 1989, as amended, or that are failing to achieve a satisfactory performance in relation to the individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the licensee's revenue.

AltaLink

AltaLink is regulated by the AUC, pursuant to the Electric Utilities Act (Alberta), the Public Utilities Act (Alberta), the Alberta Utilities Commission Act (Alberta) and the Hydro and Electric Energy Act (Alberta). The IPUCAUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems. The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of AltaLink's activities, including its tariffs, rates, construction, operations and financing.

The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements, capital expenditure prudency and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable, and approval of the transmission tariff rates of regulated transmission providers paid by the AESO, which is the independent transmission system operator in Alberta, Canada that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulation and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.

AltaLink's tariffs are regulated by the AUC under the provisions of the Electric Utilities Act (Alberta) in respect of rates and terms and conditions of service. The Electric Utilities Act (Alberta) and related regulations require the AUC to consider that it is in the public interest to provide consumers the benefit of unconstrained transmission access to competitive generation and the wholesale electricity market. In regulating transmission tariffs, the AUC must facilitate sufficient investment to ensure the timely upgrade, enhancement or expansion of transmission facilities, and foster a stable investment climate and a continued stream of capital investment for the transmission system.

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Under the Electric Utilities Act (Alberta), AltaLink prepares and files applications with the AUC for approval of tariffs to be paid by the AESO for the use of its transmission facilities, and the terms and conditions governing the use of those facilities. The AUC reviews and approves such tariff applications based on a cost-of-service regulatory model under a forward test year basis. Under this model, the AUC provides AltaLink with a reasonable opportunity to (i) earn a fair return on equity; and (ii) recover its forecast costs, including operating expenses, depreciation, borrowing costs and taxes (including deemed income taxes) associated with its regulated transmission business. The AUC must approve tariffs that are just, reasonable and not unduly preferential, arbitrary or unjustly discriminatory. AltaLink's transmission tariffs are not dependent on the price or volume of electricity transported through its transmission system.

The AESO is an independent system operator in Alberta, Canada that oversees the Alberta Interconnected Electric System ("AIES") and wholesale electricity market. The AESO is responsible for directing the safe, reliable and economic operation of the AIES, including long-term transmission system planning. AltaLink and the other transmission facility owners receive substantially all of their transmission tariff revenues from the AESO. The AESO, in turn, charges wholesale tariffs, approved by the ECAM applicationAUC, in a manner that promotes fair and open access to the AIES and facilitates a competitive market for the purchase and sale of electricity. The AESO monitors compliance with rates effective June 1, 2017.approved reliability standards, which are enforced by the Market Surveillance Administrator, which may impose penalties on transmission facility owners for non-compliance with the approved reliability standards.


California

In April 2017, PacifiCorp filedThe AESO determines the need and plans for the expansion and enhancement of the transmission system in Alberta in accordance with applicable law and reliability standards. The AESO's responsibilities include long-term transmission planning and management, including assessing the current and future transmission system capacity needs of market participants. When the AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application withto the CPUCAUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an overall rate increase of 1.3%application to recover $3 million of costs recordedthe AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the catastrophic events memorandum account overgeographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that certain transmission projects may be subject to a two-year period effective April 1, 2018. The catastrophic events memorandum account includes costs for implementing drought-related fire hazard mitigation measures and storm damage and recovery efforts associated with the December 2016 and January 2017 winter storms. The CPUC issued an order in February 2018 approving this request.competitive process open to qualified bidders.


In August 2017, PacifiCorp filed for a rate decrease of $1 million, or 1.1%, through its annual ECAC. The CPUC issued an order approving PacifiCorp's request in December 2017, the rate decrease was effective January 2018.

MidAmerican Energy


MidAmerican Energy, an indirect wholly owned subsidiary of BHE, is a United States regulated electric and natural gas utility company headquartered in Iowa that serves 0.8 million retail electric customers in portions of Iowa, Illinois and South Dakota and 0.8 million retail and transportation natural gas customers in portions of Iowa, South Dakota, Illinois and Nebraska. MidAmerican Energy is principally engaged in the business of generating, transmitting, distributing and selling electricity and in distributing, selling and transporting natural gas. MidAmerican Energy's service territory covers approximately 11,000 square miles. Metropolitan areas in which MidAmerican Energy distributes electricity at retail include Council Bluffs, Des Moines, Fort Dodge, Iowa City, Sioux City and Waterloo, Iowa; and the Quad Cities (Davenport and Bettendorf, Iowa and Rock Island, Moline and East Moline, Illinois). Metropolitan areas in which it distributes natural gas at retail include Cedar Rapids, Des Moines, Fort Dodge, Iowa City, Sioux City and Waterloo, Iowa; the Quad Cities; and Sioux Falls, South Dakota. MidAmerican Energy has a diverse customer base consisting of urban and rural residential customers and a variety of commercial and industrial customers. Principal industries served by MidAmerican Energy include electronic data storage; processing and sales of food products; manufacturing, processing and fabrication of primary metals, farm and other non-electrical machinery; cement and gypsum products; and government. In addition to retail sales and natural gas transportation, MidAmerican Energy sells electricity principally to markets operated by RTOs and natural gas to other utilities and market participants on a wholesale basis. MidAmerican Energy is a transmission-owning member of the MISO and participates in its capacity, energy and ancillary services markets.

MidAmerican Energy's regulated electric and natural gas operations are conducted under numerous franchise agreements, certificates, permits and licenses obtained from federal, state and local authorities. The franchise agreements, with various expiration dates, are typically for 20- to 25-year terms. Several of these franchise agreements give either party the right to seek amendment to the franchise agreement at one or two specified times during the term. MidAmerican Energy generally has an exclusive right to serve electric customers within its service territories and, in turn, has an obligation to provide electricity service to those customers. In return, the state utility commissions have established rates on a cost-of-service basis, which are designed to allow MidAmerican Energy an opportunity to recover its costs of providing services and to earn a reasonable return on its investment. In Illinois, MidAmerican Energy's regulated retail electric customers may choose their energy supplier.


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The percentages of MidAmerican Energy's operating revenue and operating income derived from the following business activities for the years ended December 31 were as follows:
202020192018
Operating revenue:
Regulated electric79 %76 %75 %
Regulated gas21 23 25 
Other— — 
100 %100 %100 %
Operating income:
Regulated electric86 %86 %85 %
Regulated gas14 13 15 
Other— — 
100 %100 %100 %

MidAmerican Energy was incorporated under the laws of the state of Iowa in 1995 and its principal executive offices are located at 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580, its telephone number is (515) 242-4300 and its internet address is www.midamericanenergy.com.

Regulated Electric Operations

Customers

The GWhs and percentages of electricity sold to MidAmerican Energy's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Iowa24,425 92 %24,073 92 %23,670 92 %
Illinois1,847 1,894 1,944 
South Dakota251 234 237 
26,523 100 %26,201 100 %25,851 100 %


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Electricity sold to MidAmerican Energy's retail and wholesale customers by class of customer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
GWhs sold:
Residential6,687 18 %6,575 18 %6,763 18 %
Commercial3,707 10 3,921 11 3,897 11 
Industrial14,645 39 14,127 39 13,587 37 
Other1,484 1,578 1,604 
Total retail26,523 71 26,201 72 25,851 70 
Wholesale11,219 29 10,000 28 11,181 30 
Total GWhs sold37,742 100 %36,201 100 %37,032 100 %
Average number of retail customers (in thousands):
Residential682 86 %675 86 %670 86 %
Commercial97 12 95 12 94 12 
Industrial— — — 
Other14 14 14 
Total795 100 %786 100 %780 100 %

Variations in weather, economic conditions and various conservation and energy efficiency measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.

There are seasonal variations in MidAmerican Energy's electricity sales that are principally related to weather and the related use of electricity for air conditioning. Additionally, electricity sales are priced higher in the summer months compared to the remaining months of the year. As a result, 40% to 50% of MidAmerican Energy's regulated electric retail revenue is reported in the months of June, July, 2014,August and September.

A degree of concentration of sales exists with certain large electric retail customers. Sales to the ten largest customers, from a variety of industries, comprised 23%, 21% and 20% of total retail electric sales in 2020, 2019 and 2018, respectively. Sales to electronic data storage customers included in the ten largest customers comprised 16%, 12% and 9% of total retail electric sales in 2020, 2019 and 2018, respectively.

The annual hourly peak demand on MidAmerican Energy's electric system usually occurs as a result of air conditioning use during the cooling season. Peak demand represents the highest demand on a given day and at a given hour. On July 8, 2020, retail customer usage of electricity caused an hourly peak demand of 5,035 MWs on MidAmerican Energy's electric distribution system, which is 60 MWs less than the record hourly peak demand of 5,095 MWs set July 19, 2019.

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Generating Facilities and Fuel Supply

MidAmerican Energy has ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding MidAmerican Energy's owned generating facilities as of December 31, 2020:
FacilityNet
Year Installed /Net CapacityOwned Capacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
WIND:
Ida GroveIda Grove, IAWind2016-2019500 500 
OrientGreenfield, IAWind2018-2019500 500 
HighlandPrimghar, IAWind2015475 475 
Rolling HillsMassena, IAWind2011443 443 
Beaver CreekOgden, IAWind2017-2018340 340 
North EnglishMontezuma, IAWind2018-2019340 340 
Palo AltoPalo Alto, IAWind2019-2020340 340 
Arbor HillGreenfield, IAWind2018-2020310 310 
PomeroyPomeroy, IAWind2007-2011 / 2018-2019286 286 
Diamond TrailLadora, IAWind2020250 250 
LundgrenOtho, IAWind2014250 250 
O'BrienPrimghar, IAWind2016250 250 
CenturyBlairsburg, IAWind2005-2008 / 2017-2018200 200 
EclipseAdair, IAWind2012200 200 
IntrepidSchaller, IAWind2004-2005 / 2017176 176 
AdairAdair, IAWind2008 / 2019-2020175 175 
PrairieMontezuma, IAWind2017-2018169 169 
Southern HillsOrient, IAWind2020163 163 
CarrollCarroll, IAWind2008 / 2019150 150 
WalnutWalnut, IAWind2008 / 2019150 150 
ViennaGladbrook, IAWind2012-2013150 150 
AdamsLennox, IAWind2015150 150 
WellsburgWellsburg, IAWind2014139 139 
LaurelLaurel, IAWind2011120 120 
MacksburgMacksburg, IAWind2014119 119 
ContrailBraddyville, IAWind2020110 110 
Morning LightAdair, IAWind2012100 100 
VictoryWestside, IAWind2006 / 2017-201899 99 
IvesterWellsburg, IAWind201890 90 
Pocahontas Prairie(3)
Pomeroy, IAWind202080 80 
Charles CityCharles City, IAWind2008 / 201875 75 
6,899 6,899 
COAL:
LouisaMuscatine, IACoal1983744 655 
Walter Scott, Jr. Unit No. 3Council Bluffs, IACoal1978702 556 
Walter Scott, Jr. Unit No. 4Council Bluffs, IACoal2007819 489 
OttumwaOttumwa, IACoal1981720 374 
George Neal Unit No. 3Sergeant Bluff, IACoal1975506 364 
George Neal Unit No. 4Salix, IACoal1979653 265 
4,144 2,703 
NATURAL GAS AND OTHER:
Greater Des MoinesPleasant Hill, IAGas2003-2004485 485 
ElectrifarmWaterloo, IAGas or Oil1975-1978187 187 
Pleasant HillPleasant Hill, IAGas or Oil1990-1994156 156 
SycamoreJohnston, IAGas or Oil1974147 147 
River HillsDes Moines, IAGas1966-1967118 118 
Riverside Unit No. 5(4)
Bettendorf, IAGas1961117 117 
CoralvilleCoralville, IAGas197066 66 
MolineMoline, ILGas197064 64 
28 portable power modulesVariousOil200056 56 
ParrCharles City, IAGas196933 33 
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FacilityNet
Year Installed /Net CapacityOwned Capacity
Generating FacilityLocationEnergy Source
Repowered(1)
(MWs)(2)
(MWs)(2)
1,429 1,429 
NUCLEAR:
Quad Cities Unit Nos. 1 and 2Cordova, ILUranium19721,815 454 
HYDROELECTRIC:
Moline Unit Nos. 1-4Moline, ILHydroelectric1941
Total Available Generating Capacity14,291 11,489 
PROJECTS UNDER CONSTRUCTION:
Various wind projects87 87 
14,378 11,576 
(1)Repowered dates are associated with component replacements on existing wind-powered generating facilities commonly referred to by the Internal Revenue Service ("IRS") as repowering. IRS rules provide for re-establishment of the PTCs for an existing wind-powered generating facility upon the replacement of a significant portion of its components. If the degree of component replacement in such projects meets IRS guidelines, PTCs are re-established for ten years at rates that depend upon the date on which construction begins.
(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates MidAmerican Energy's ownership of Facility Net Capacity.
(3)The Pocahontas Prairie was acquired in 2020 and is currently not eligible to earn federal renewable electricity PTCs.
(4)Riverside Unit No. 5 was retired in January 2021.

The following table shows the percentages of MidAmerican Energy's total energy supplied by energy source for the years ended December 31:
202020192018
Wind and other renewable(1)
54 %44 %36 %
Coal19 33 42 
Nuclear10 10 10 
Natural gas
Total energy generated85 88 90 
Energy purchased - short-term contracts and other14 10 
Energy purchased - long-term contracts (renewable)(1)
Energy purchased - long-term contracts (non-renewable)— 
100 %100 %100 %

(1)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements, (b) sold to third parties in the form of RECs or other environmental commodities, or (c) excluded from energy purchased.

MidAmerican Energy is required to have resources available for dispatch by MISO to continuously meet its customer needs and reliably operate its electric system. The percentage of MidAmerican Energy's energy supplied by energy source varies from year to year and is subject to numerous operational and economic factors such as planned and unplanned outages, fuel commodity prices, fuel transportation costs, weather, environmental considerations, transmission constraints, and wholesale market prices of electricity. MidAmerican Energy evaluates these factors continuously in order to facilitate economical dispatch of its generating facilities by MISO. When factors for one energy source are less favorable, MidAmerican Energy places more reliance on other energy sources. For example, MidAmerican Energy can generate more electricity using its low cost wind-powered generating facilities when factors associated with these facilities are favorable. When factors associated with wind resources are less favorable, MidAmerican Energy must increase its reliance on more expensive generation or purchased electricity. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction.


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Wind

MidAmerican Energy owns more wind-powered generating capacity than any other United States rate-regulated electric utility and believes wind-powered generation offers a viable, economical and environmentally prudent means of supplying electricity and complying with laws and regulations. Pursuant to ratemaking principles approved by the IUB, issued an order approving increasesfacilities accounting for 96% of MidAmerican Energy's wind-powered generating capacity in-service at December 31, 2020, are authorized to earn over their regulatory lives a fixed rate of return on equity ranging from 11.0% to 12.2% on the depreciated cost of their original construction, which excludes the cost of later replacements, in any future Iowa rate proceeding. MidAmerican Energy's wind-powered generating facilities, including those facilities where a significant portion of the equipment was replaced, commonly referred to as repowered facilities, are eligible for federal renewable electricity PTCs for 10 years from the date the facilities are placed in-service. PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold. PTCs for MidAmerican Energy's wind-powered generating facilities currently in-service began expiring in 2014, with final expiration in 2030. Since 2014, MidAmerican Energy has repowered, or plans to repower, 2,310 MWs of wind-powered generating facilities for which PTCs have expired or will expire by the end of 2022. MidAmerican Energy anticipates energy generation from the repowered facilities will increase between 19% and 30% depending upon the technology being repowered.

Of the 6,998 MWs of wind-powered generating facilities in-service as of December 31, 2020, 6,866 MWs were generating PTCs, including 1,275 MWs of repowered facilities. PTCs earned by MidAmerican Energy's wind-powered generating facilities placed in-service prior to 2013, except for repowered facilities, are included in MidAmerican Energy's Iowa energy adjustment clause, through which MidAmerican Energy is allowed to recover fluctuations in its electric retail electric base rates over approximately three yearsenergy costs. Facilities earning PTCs that currently benefit customers through the Iowa energy adjustment clause totaled 1,000 MWs (nominal ratings) as of December 31, 2020, with equal annualized increasesthe eligibility of those facilities to earn PTCs expiring by the end of 2022. MidAmerican Energy earned PTCs totaling $510 million and $378 million in revenues2020 and 2019, respectively, of $45 million, effective August 2013which 15% and again on January 1, 2015 and 2016, for a total annualized increase19%, respectively, were included in the Iowa energy adjustment clause.

Coal

All of $135 million when fully implemented. In addition to an increasethe coal-fueled generating facilities operated by MidAmerican Energy are fueled by low-sulfur, western coal from the Powder River Basin in base rates, the order approved, among other items, a revenue sharing mechanism that shares withnortheast Wyoming. MidAmerican Energy's customers 80%coal supply portfolio includes multiple suppliers and mines under short-term and multi-year agreements of revenues related to equity returns above 11%varying terms and 100% of revenues related to equity returns above 14%, with the customer portion of any sharing reducing rate base.quantities through 2023. MidAmerican Energy recordedbelieves supplies from these sources are presently adequate and available to meet MidAmerican Energy's needs. MidAmerican Energy's coal supply portfolio has substantially all of its expected 2021 requirements under fixed-price contracts. MidAmerican Energy regularly monitors the western coal market for opportunities to enhance its coal supply portfolio.

MidAmerican Energy has a regulatory liabilitymulti-year long-haul coal transportation agreement with BNSF Railway Company ("BNSF"), an affiliate company, for revenue sharing totaling $26 million in 2017 and $30 million in 2016, which reduced rate base in the respective following January. In August 2016,delivery of coal to all of the IUB issued an order approving ratemaking principles relatedMidAmerican Energy-operated coal-fueled generating facilities other than the George Neal Energy Center. Under this agreement, BNSF delivers coal directly to MidAmerican Energy's constructionWalter Scott, Jr. Energy Center and to an interchange point with Canadian Pacific Railway Company for short-haul delivery to the Louisa Energy Center. MidAmerican Energy has a multi-year long-haul coal transportation agreement with Union Pacific Railroad Company for the delivery of upcoal to 2,000 MW (nominal ratings)the George Neal Energy Center.

Nuclear

MidAmerican Energy is a 25% joint owner of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station"), a nuclear power plant, which is currently licensed by the NRC for operation until December 14, 2032. Exelon Generation Company, LLC ("Exelon Generation"), a subsidiary of Exelon Corporation, is the 75% joint owner and the operator of Quad Cities Station. Approximately one-third of the nuclear fuel assemblies in each reactor core at Quad Cities Station is replaced every 24 months. MidAmerican Energy has been advised by Exelon Generation that the following requirements for Quad Cities Station can be met under existing supplies or commitments: uranium requirements through 2025 and partial requirements through 2030; uranium conversion requirements through 2028 and partial requirements through 2031; enrichment requirements through 2027 and partial requirements through 2031; and fuel fabrication requirements through 2028. MidAmerican Energy has been advised by Exelon Generation that it does not anticipate it will have difficulty in contracting for uranium, uranium conversion, enrichment or fabrication of nuclear fuel needed to operate Quad Cities Station during these time periods. In reaction to concerns about the profitability of Quad Cities Station and Exelon Generation's ability to continue its operation, in December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Agency to purchase ZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the ZECs will provide Exelon Generation additional wind-powered generating facilities. The ratemaking principles modified the revenue sharing mechanism, effectivethrough 2027 as an incentive for continued operation of Quad Cities Station.

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        Natural Gas and Other

MidAmerican Energy uses natural gas and oil as fuel for intermediate and peak demand electric generation, igniter fuel, transmission support and standby purposes. These sources are presently in 2018, such that sharing will be triggered each year byadequate supply and available to meet MidAmerican Energy's needs.

        Regional Transmission Organizations

MidAmerican Energy sells and purchases electricity and ancillary services related to its generation and load in wholesale markets pursuant to the tariffs in those markets. MidAmerican Energy participates predominantly in the MISO energy and ancillary service markets, which provide MidAmerican Energy with wholesale opportunities over a large market area. MidAmerican Energy can enter into wholesale bilateral transactions in addition to market activity related to its assets. MidAmerican Energy is authorized to participate in the Southwest Power Pool, Inc. and PJM Interconnection, L.L.C. ("PJM") markets and can contract with several other major transmission-owning utilities in the region. MidAmerican Energy can utilize both financial swaps and physical fixed-price electricity sales and purchases contracts to reduce its exposure to electricity price volatility.

MidAmerican Energy's decisions regarding additions to or reductions of its generation portfolio may be impacted by the MISO's minimum reserve margin requirement. The MISO requires each member to maintain a minimum reserve margin of its accredited generating capacity over its peak demand obligation based on the member's load forecast filed with the MISO each year. The MISO's reserve requirement was 8.9% for the summer of 2020 and will increase to 9.4% for the summer of 2021. MidAmerican Energy's owned and contracted capacity accredited for the 2020-2021 MISO capacity auction was 5,471 MWs compared to a peak demand obligation of 4,830 MWs, or a reserve margin of 13.3%. Accredited capacity represents the amount of generation available to meet the requirements of MidAmerican Energy's retail customers and consists of MidAmerican Energy-owned generation, interruptible retail customer load, certain customer private generation that MidAmerican Energy is contractually allowed to dispatch and the net amount of capacity purchases and sales, excluding sales into the MISO annual capacity auction. Accredited capacity may vary significantly from the nominal, or design, capacity ratings, particularly for wind turbines whose output is dependent upon wind levels at any given time. Additionally, the actual equity returns aboveamount of generating capacity available at any time may be less than the accredited capacity due to regulatory restrictions, transmission constraints, fuel restrictions and generating units being temporarily out of service for inspection, maintenance, refueling, modifications or other reasons.

Transmission and Distribution

MidAmerican Energy's transmission and distribution systems included 4,600 circuit miles of transmission lines in four states, 25,000 circuit miles of distribution lines and 340 substations as of December 31, 2020. Electricity from MidAmerican Energy's generating facilities and purchased electricity is delivered to wholesale markets and its retail customers via the transmission facilities of MidAmerican Energy and others. MidAmerican Energy participates in the MISO capacity, energy and ancillary services markets as a threshold calculated annuallytransmission-owning member and, accordingly, operates its transmission assets at the direction of the MISO. The MISO manages its energy and ancillary service markets using reliability-constrained economic dispatch of the region's generation. For both the day-ahead and real-time (every five minutes) markets, the MISO analyzes generation commitments to provide market liquidity and transparent pricing while maintaining transmission system reliability by minimizing congestion and maximizing efficient energy transmission. Additionally, through its FERC-approved OATT, the MISO performs the role of transmission service provider throughout the MISO footprint and administers the long-term planning function. MISO and related costs of the participants are shared among the participants through a number of mechanisms in accordance with the order. The thresholdMISO tariff.

Regulated Natural Gas Operations

MidAmerican Energy is engaged in the weighted averagedistribution of equity returnsnatural gas to customers in its service territory and the related procurement, transportation and storage of natural gas for rate base as authorized via ratemaking principles proceedingsthe benefit of those customers. MidAmerican Energy purchases natural gas from various suppliers and contracts with interstate natural gas pipelines for transportation of the gas to MidAmerican Energy's service territory and for remaining rate base, interest ratesstorage and balancing services. MidAmerican Energy sells natural gas and delivery services to end-use customers on 30-year single A-rated utility bond yields plus 400 basis points,its distribution system; sells natural gas to other utilities, municipalities and energy marketing companies; and transports natural gas through its distribution system for end-use customers who have independently secured their supply of natural gas. During 2020, 58% of the total natural gas delivered through MidAmerican Energy's distribution system was associated with a minimum returntransportation service.

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Natural gas property consists primarily of 9.5%. Pursuantnatural gas mains and service lines, meters, and related distribution equipment, including feeder lines to communities served from natural gas pipelines owned by others. The natural gas distribution facilities of MidAmerican Energy included 24,100 miles of natural gas main and service lines as of December 31, 2020.

Customer Usage and Seasonality

The percentages of natural gas sold to MidAmerican Energy's retail customers by jurisdiction for the years ended December 31 were as follows:
202020192018
Iowa76 %76 %76 %
South Dakota13 13 13 
Illinois10 10 10 
Nebraska
100 %100 %100 %

The percentages of natural gas sold to MidAmerican Energy's retail and wholesale customers by class of customer, total Dths of natural gas sold, total Dths of transportation service and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Residential45 %45 %43 %
Commercial(1)
20 22 21 
Industrial(1)
Total retail70 71 69 
Wholesale(2)
30 29 31 
100 %100 %100 %
Total Dths of natural gas sold (in thousands)114,399125,655126,272
Total Dths of transportation service (in thousands)110,263112,143102,198
Total average number of retail customers (in thousands)774766759

(1)Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers that use natural gas principally for heating. Industrial customers are non-residential customers that use natural gas principally for their manufacturing processes.
(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

There are seasonal variations in MidAmerican Energy's regulated natural gas business that are principally due to the changeuse of natural gas for heating. Typically, 50-60% of MidAmerican Energy's regulated retail natural gas revenue is reported in revenue sharing,the months of January, February, March and December.

On January 29, 2019, MidAmerican Energy will share with customers 100%recorded its all-time highest peak-day delivery through its distribution system of the revenue in excess1,314,526 Dths. This peak-day delivery consisted of this trigger. Such revenue sharing will reduce coal68% traditional retail sales service and nuclear generation rate base, which is intended to mitigate future base rate increases.32% transportation service. MidAmerican Energy's 2020/2021 winter heating season peak-day delivery as of February 23, 2021, was 1,243,237 Dths, reached on February 14, 2021. This preliminary peak-day delivery consisted of 72% traditional retail sales service and 28% transportation service.




The 2017 Tax Reform enacted significant changes to the Internal Revenue Code, including, among other things, a reduction in the U.S. federal corporate income tax rate from 35% to 21%.
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Natural Gas Supply and Capacity

MidAmerican Energy has made filings or has beenuses several strategies designed to maintain a reliable natural gas supply and reduce the impact of volatility in discussions with eachnatural gas prices on its regulated retail natural gas customers. These strategies include the purchase of its state rate regulatory bodies proposing either a reduction in retail rates or rate base for all orgeographically diverse supply portfolio from producers and third-party energy marketing companies, the use of interstate pipeline storage services and MidAmerican Energy's LNG peaking facilities, and the use of financial derivatives to fix the price on a portion of the net benefitsanticipated natural gas requirements of MidAmerican Energy's customers. Refer to "General Regulation" in Item 1 of this Form 10-K for a discussion of the 2017 Tax ReformPGAs.

MidAmerican Energy contracts for 2018firm natural gas pipeline capacity to transport natural gas from key production areas and beyond.liquid market centers to its service territory through direct interconnects to the pipeline systems of several interstate natural gas pipeline systems, including Northern Natural Gas, an affiliate company. MidAmerican Energy has proposedmultiple pipeline interconnections into several larger markets within its distribution system. Multiple pipeline interconnections create competition among pipeline suppliers for transportation capacity to serve those markets, thus reducing costs. In addition, multiple pipeline interconnections increase delivery reliability and give MidAmerican Energy the ability to optimize delivery of the lowest cost supply from the various production areas and liquid market centers into these markets. Benefits to MidAmerican Energy's distribution system customers are shared among all jurisdictions through a consolidated PGA.

At times, the natural gas pipeline capacity available through MidAmerican Energy's firm capacity portfolio may exceed the requirements of retail customers on MidAmerican Energy's distribution system. Firm capacity in Iowa,excess of MidAmerican Energy's system needs can be released to other companies to achieve optimum use of the available capacity. Past IUB and South Dakota Public Utilities Commission ("SDPUC") rulings have allowed MidAmerican Energy to retain 30% of the respective jurisdictional revenue on the resold capacity, with the remaining 70% being returned to customers through the PGAs.

MidAmerican Energy utilizes interstate pipeline natural gas storage services to meet retail customer requirements, manage fluctuations in demand due to changes in weather and other usage factors and manage variation in seasonal natural gas pricing. MidAmerican Energy typically withdraws natural gas from storage during the heating season when customer demand is historically at its largest jurisdiction,peak and injects natural gas into storage during off-peak months when customer demand is historically lower. MidAmerican Energy also utilizes its three LNG facilities to meet peak day demands during the winter heating season. Interstate pipeline storage services and MidAmerican Energy's LNG facilities reduce customer revenue viadependence on natural gas purchases during the volatile winter heating season and can deliver a rider mechanism forsignificant portion of MidAmerican Energy's anticipated retail sales requirements on a peak winter day. For MidAmerican Energy's 2020/2021 winter heating season preliminary peak-day of February 14, 2021, supply sources used to meet deliveries to traditional retail sales service customers included 51% from purchases delivered on interstate pipelines, 33% from interstate pipeline storage services and 16% from MidAmerican Energy's LNG facilities.

MidAmerican Energy attempts to optimize the value of its regulated transportation capacity, natural gas supply and interstate pipeline storage services by engaging in wholesale transactions. IUB and SDPUC rulings have allowed MidAmerican Energy to retain 50% of the lower annual income tax expense resulting fromrespective jurisdictional margins earned on certain wholesale sales of natural gas, with the decreaseremaining 50% being returned to customers through the PGAs.

MidAmerican Energy is not aware of any factors that would cause material difficulties in federal tax rates, updated annually. Resultsmeeting its anticipated retail customer demand under normal operating conditions for the foreseeable future.


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Energy Efficiency Programs

MidAmerican Energy has provided a comprehensive set of demand- and energy-reduction programs to its Iowa electric jurisdiction will beand natural gas customers since 1990. The programs, collectively referred to as energy efficiency programs, are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. Current programs offer services to customers such as energy engineering audits and information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, MidAmerican Energy offers rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for efficient construction. Incentives are also paid to residential customers who participate in the air conditioner load control program and nonresidential customers who participate in the nonresidential load management program. In Iowa, legislation passed in 2018 provides that projected cumulative average annual costs for a natural gas energy efficiency plan cannot exceed 1.5% of expected Iowa natural gas retail revenue and, for an electric demand response plan and separately for an electric energy efficiency plan other than demand response, cannot exceed 2.0% of expected annual Iowa electric retail revenue. Although subject to Iowa revenue sharing provisions. Ifprudence reviews, state regulations allow for contemporaneous recovery of costs incurred for energy efficiency programs through state-specific energy efficiency service charges paid by all retail electric and natural gas customers. In 2020, $40 million was expensed for MidAmerican Energy's filingsenergy efficiency programs, which resulted in eachestimated first-year energy savings of its rate jurisdictions136,000 MWhs of electricity and 189,000 Dths of natural gas and an estimated peak load reduction of 345 MWs of electricity and 4,558 Dths per day of natural gas.

Human Capital

Employees

All of MidAmerican Funding's employees are approved as proposed, it is estimated that 2018 revenue will be reducedemployed by approximately $72 million, subject to change depending upon actual resultsMidAmerican Energy. As of operations.December 31, 2020, MidAmerican Energy cannot predicthad approximately 3,400 employees, of which approximately 1,400 were covered by union contracts. MidAmerican Energy has three separate contracts with locals of the timing or ultimate outcomeInternational Brotherhood of regulatory actions on its proposals.Electrical Workers ("IBEW") and the United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union. A contract with the IBEW covering substantially all of the union employees expires April 30, 2022. For more information regarding MidAmerican Funding's and MidAmerican Energy's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.


NV ENERGY (NEVADA POWER AND SIERRA PACIFIC)

General

NV Energy, (Nevadaan indirect wholly owned subsidiary of BHE, is an energy holding company headquartered in Nevada whose principal subsidiaries are Nevada Power and Sierra Pacific)

Regulatory Rate Reviews

In June 2017,Pacific. Nevada Power filed anand Sierra Pacific are indirect consolidated subsidiaries of Berkshire Hathaway. Nevada Power is a United States regulated electric regulatory rate reviewutility company serving 1.0 million retail customers primarily in the Las Vegas, North Las Vegas, Henderson and adjoining areas. Sierra Pacific is a United States regulated electric and natural gas utility company serving 0.4 million retail electric customers and 0.2 million retail and transportation natural gas customers in northern Nevada. The Nevada Utilities are principally engaged in the business of generating, transmitting, distributing and selling electricity and, in the case of Sierra Pacific, in distributing, selling and transporting natural gas. Nevada Power and Sierra Pacific have electric service territories covering approximately 4,500 square miles and 41,200 square miles, respectively. Sierra Pacific has a natural gas service territory covering approximately 900 square miles in Reno and Sparks. Principal industries served by the Nevada Utilities include gaming, recreation, warehousing, manufacturing and governmental services. Sierra Pacific also serves the mining industry. The Nevada Utilities buy and sell electricity on the wholesale market with the PUCN. other utilities, energy marketing companies, financial institutions and other market participants to balance and optimize economic benefits of electricity generation, retail customer loads and wholesale transactions.

The filing supported an annual revenue increaseNevada Utilities' electric and natural gas operations are conducted under numerous nonexclusive franchise agreements, revocable permits and licenses obtained from federal, state and local authorities. The franchise agreements, with various expiration dates, are typically for 20- to 25-year terms. The Nevada Utilities operate under certificates of $29 million, or 2%, but requested no incremental annual revenue relief. In December 2017,public convenience and necessity as regulated by the PUCN, issuedand as such the Nevada Utilities have an orderobligation to provide electricity service to those customers within their service territory. In return, the PUCN has established rates on a cost-of-service basis, which reducedare designed to allow the Nevada Utilities an opportunity to recover all prudently incurred costs of providing services and an opportunity to earn a reasonable return on their investment.
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NV Energy's monthly net income is affected by the seasonal impact of weather on electricity and natural gas sales and seasonal retail electricity prices from the Nevada Utilities'. For 2020, 76% of NV Energy annual net income was recorded in the months of June through September.

Regulated electric utility operations is Nevada Power's only segment while regulated electric utility operations and regulated natural gas operations are the two segments of Sierra Pacific.

The percentages of Sierra Pacific's operating revenue requirement by $26 million and requires operating income derived from the following business activities for the years ended December 31 were as follows:
202020192018
Operating revenue:
Electric86 %87 %88 %
Gas14 13 12 
100 %100 %100 %
Operating income:
Electric89 %88 %89 %
Gas11 12 11 
100 %100 %100 %

Nevada Power was incorporated under the laws of the state of Nevada in 1929 and its principal executive offices are located at 6226 West Sahara Avenue, Las Vegas, Nevada 89146, its telephone number is (702) 402-5000 and its internet address is www.nvenergy.com.

Sierra Pacific was incorporated under the laws of the state of Nevada in 1912 and its principal executive offices are located at 6100 Neil Road, Reno, Nevada 89511, its telephone number is (775) 834-4011 and its internet address is www.nvenergy.com.
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Regulated Electric Operations

Customers

The Nevada Utilities' sell electricity to share 50%retail customers in a single state jurisdiction. Electricity sold to the Nevada Utilities' retail and wholesale customers by class of revenuescustomer and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Nevada Power:
GWhs sold:
Residential10,477 46 %9,311 41 %9,970 43 %
Commercial4,591 20 4,657 21 4,778 20 
Industrial4,881 21 5,344 24 5,534 24 
Other195 193 214 
Total fully bundled20,144 88 19,505 87 20,496 88 
Distribution only service2,425 11 2,613 12 2,521 11 
Total retail22,569 99 22,118 99 23,017 99 
Wholesale374 527 274 
Total GWhs sold22,943 100 %22,645 100 %23,291 100 %
Average number of retail customers (in thousands):
Residential856 88 %840 88 %825 88 %
Commercial110 12 109 12 108 12 
Industrial— — — 
Total968 100 %951 100 %935 100 %
Sierra Pacific:
GWhs sold:
Residential2,672 23 %2,491 22 %2,483 23 %
Commercial2,977 26 2,973 26 2,998 27 
Industrial3,544 31 3,716 32 3,387 31 
Other15 — 16 — 16 — 
Total fully bundled9,208 80 9,196 80 8,884 81 
Distribution only service1,670 15 1,629 14 1,516 14 
Total retail10,878 95 10,825 94 10,400 95 
Wholesale548 662 558 
Total GWhs sold11,426 100 %11,487 100 %10,958 100 %
Average number of retail customers (in thousands):
Residential310 86 %304 86 %300 86 %
Commercial49 14 48 14 47 14 
Total359 100 %352 100 %347 100 %

Variations in weather, economic conditions, particularly for gaming, mining and wholesale customers and various conservation, energy efficiency and private generation measures and programs can impact customer usage. Wholesale sales are impacted by market prices for energy relative to the incremental cost to generate power.

There are seasonal variations in the Nevada Utilities' electric business that are principally related to equity returns above 9.7%. Asweather and the related use of electricity for air conditioning. Typically, 48-52% of Nevada Power's and 36-38% of Sierra Pacific's regulated electric revenue is reported in the months of June through September.

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The annual hourly peak customer demand on the Nevada Utilities' electric systems occurs as a result of air conditioning use during the order,cooling season. Peak demand represents the highest demand on a given day and at a given hour. On August 18, 2020, customer usage of electricity caused an hourly peak demand of 5,965 MWs on Nevada Power's electric system, which is 159 MWs less than the record hourly peak demand of 6,124 MWs set July 28, 2016. On July 29, 2020, customer usage of electricity caused an hourly peak demand of 1,906 MWs on Sierra Pacific's electric system, which is 46 MWs more than the previous record hourly peak demand of 1,860 MWs set July 19, 2018.

Generating Facilities and Fuel Supply

The Nevada Utilities have ownership interest in a diverse portfolio of generating facilities. The following table presents certain information regarding the Nevada Utilities' owned generating facilities as of December 31, 2020:
FacilityNet Owned
Net CapacityCapacity
Generating FacilityLocationEnergy SourceInstalled
(MWs)(1)
(MWs)(1)
Nevada Power:
NATURAL GAS:
ClarkLas Vegas, NVNatural gas1973-20081,102 1,102 
LenzieLas Vegas, NVNatural gas20061,102 1,102 
Harry AllenLas Vegas, NVNatural gas1995-2011628 628 
HigginsPrimm, NVNatural gas2004530 530 
SilverhawkLas Vegas, NVNatural gas2004520 520 
Las VegasLas Vegas, NVNatural gas1994-2003272 272 
Sun PeakLas Vegas, NVNatural gas/oil1991210 210 
4,364 4,364 
RENEWABLES:
NellisLas Vegas, NVSolar201515 15 
GoodspringsGoodsprings, NVWaste heat2010
20 20 
Total Nevada Power4,384 4,384 
Sierra Pacific:
NATURAL GAS:
TracySparks, NVNatural gas1974-2008753 753 
Ft. ChurchillYerington, NVNatural gas1968-1971226 226 
Clark MountainSparks, NVNatural gas1994132 132 
1,111 1,111 
COAL:
Valmy Unit Nos. 1 and 2Valmy, NVCoal1981-1985522 261 
Total Sierra Pacific1,633 1,372 
Total NV Energy6,017 5,756 

(1)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates Nevada Power recorded expenseor Sierra Pacific's ownership of $28 million primarily dueFacility Net Capacity.


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The following table shows the percentages of the Nevada Utilities' total energy supplied by energy source for the years ended December 31:
202020192018
Nevada Power:
Natural gas66 %65 %64 %
Coal— 
Total energy generated66 70 70 
Energy purchased - long-term contracts (renewable)(1)
15 17 16 
Energy purchased - long-term contracts (non-renewable)13 11 10 
Energy purchased - short-term contracts and other
100 %100 %100 %
Sierra Pacific:
Natural gas48 %46 %48 %
Coal11 
Total energy generated56 57 56 
Energy purchased - long-term contracts (non-renewable)24 27 29 
Energy purchased - long-term contracts (renewable)(1)
15 13 12 
Energy purchased - short-term contracts and other
100 %100 %100 %

(1)     All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to the reduction of acomply with RPS or other regulatory assetrequirements, (b) sold to return to customers revenue collected for costs not incurred. In January 2018, Nevada Power filed a petition for clarification of certain findings and directivesthird parties in the order. The new rates were effective in February 2018.form of RECs or other environmental commodities, or (c) excluded from energy purchased.


The 2017 Tax Reform enacted significant changesNevada Utilities are required to have resources available to continuously meet their customer needs and reliably operate their electric systems. The percentage of the Internal Revenue Code, including, among other things, a reductionNevada Utilities' energy supplied by energy source varies from year-to-year and is subject to numerous operational and economic factors such as planned and unplanned outages; fuel commodity prices; fuel transportation costs; weather; environmental considerations; transmission constraints; and wholesale market prices of electricity. The Nevada Utilities evaluate these factors continuously in the U.S. federal corporate income tax rate from 35%order to 21%. In February 2018,facilitate economical dispatch of their generating facilities. When factors for one energy source are less favorable, the Nevada Utilities made filingsplace more reliance on other energy sources. As long as the Nevada Utilities' purchases are deemed prudent by the PUCN, through their annual prudency review, the Nevada Utilities are permitted to recover the cost of fuel and purchased power. The Nevada Utilities also have the ability to reset quarterly the BTERs, with PUCN approval, based on the last twelve months fuel costs and purchased power and to reset quarterly DEAA.

The Nevada Utilities have adopted an approach to managing the energy supply function that has three primary elements. The first element is a set of management guidelines for procuring and optimizing the supply portfolio that is consistent with the PUCN proposingrequirements of a tax rate reduction riderload serving entity with a full requirements obligation, and with the growth of private generation serving a small but growing group of customers with partial requirements. The second element is an energy risk management and control approach that ensures clear separation of roles between the day-to-day management of risks and compliance monitoring and control and ensures clear distinction between policy setting (or planning) and execution. Lastly, the Nevada Utilities pursue a process of ongoing regulatory involvement and acknowledgment of the resource portfolio management plans.

The Nevada Utilities have entered into multiple long-term power purchase contracts (three or more years) with suppliers that generate electricity utilizing renewable resources, natural gas and coal. Nevada Power has entered into contracts with a total capacity of 3,612 MWs with contract termination dates ranging from 2022 to 2067. Included in these contracts are 3,352 MWs of capacity from renewable energy, of which 2,068 MWs of capacity are under development or construction and not currently available. Sierra Pacific has entered into contracts with a total capacity of 1,178 MWs with contract termination dates ranging from 2022 to 2046. Included in these contracts are 992 MWs of capacity from renewable energy, of which 401 MWs of capacity are under development or construction and not currently available.

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The Nevada Utilities manage certain risks relating to their supply of electricity and fuel requirements by entering into various contracts, which may be accounted for as derivatives, including forwards, futures, options, swaps and other agreements. Refer to NV Energy's "General Regulation" section in Item 1 of this Form 10-K for a discussion of energy cost recovery by jurisdiction and Nevada Power's Item 7A and Sierra Pacific's Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.

    Natural Gas

The Nevada Utilities rely on first-of-the-month indexed physical gas purchases for the lower annual income tax expense anticipatedmajority of natural gas needed to result fromoperate their generating facilities. To secure natural gas supplies for the 2017 Tax Reform for 2018generating facilities, the Nevada Utilities execute purchases pursuant to a PUCN approved four season laddering strategy. In 2020, natural gas supply net purchases averaged 320,382 and beyond. The filings support an annual rate reduction of $59 million169,522 Dths per day with the winter period contracts averaging 273,504 and $25 million189,422 Dths per day and the summer period contracts averaging 353,678 and 155,439 Dths per day for Nevada Power and Sierra Pacific, respectively. The Nevada Utilities cannot predictbelieve supplies from these sources are presently adequate and available to meet its needs.

The Nevada Utilities contract for firm natural gas pipeline capacity to transport natural gas from production areas to their service territory through direct interconnects to the timing or ultimate outcomepipeline systems of regulatory actions on its proposals.

In June 2016,several interstate natural gas pipeline systems, including Nevada Power who contracts with Kern River, an affiliated company. Sierra Pacific utilizes natural gas storage contracted from interstate pipelines to meet retail customer requirements and to manage the daily changes in demand due to changes in weather and other usage factors. The stored natural gas is typically replaced during off-peak months when the demand for natural gas is historically lower than during the heating season.

    Coal

Sierra Pacific relies on spot market solicitations for coal supplies and will regularly monitor the western coal market for opportunities to meet these needs. Sierra Pacific has a transportation services contract with Union Pacific Railroad Company to ship coal from various origins in central Utah, western Colorado and Wyoming that expires December 31, 2025. Sierra Pacific has no commitments to purchase coal for 2021 or beyond. The Navajo Generating Station was shut down in November 2019 and Nevada Power has no coal requirements going forward.

        Energy Imbalance Market

The Nevada Utilities participate in the EIM operated by the California ISO, which reduces costs to serve customers through more efficient dispatch of a larger and more diverse pool of resources, more effectively integrates renewables and enhances reliability through improved situational awareness and responsiveness. The EIM expands the real-time component of the California ISO's market technology to optimize and balance electricity supply and demand every five minutes across the EIM footprint. The EIM is voluntary and available to all balancing authorities in the western United States. EIM market participants submit bids to the California ISO market operator before each hour for each generating resource they choose to be dispatched by the market. Each bid is comprised of a dispatchable operating range, ramp rate and prices across the operating range. The California ISO market operator uses sophisticated technology to select the least-cost resources to meet demand and send simultaneous dispatch signals to every participating generator across the EIM footprint every five minutes. In addition to generation resource bids, the California ISO market operator also receives continuous real-time updates of the transmission grid network, meteorological and load forecast information that it uses to optimize dispatch instructions. Outside the EIM footprint, utilities in the western United States do not utilize comparable technology and are largely limited to transactions within the borders of their balancing authority area to balance supply and demand intra-hour using a combination of manual and automated dispatch. The EIM delivers customer benefits by leveraging automation and resource diversity to result in more efficient dispatch, more effective integration of renewables and improved situational awareness. Benefits are expected to increase further with renewable resource expansion and as more entities join the EIM bringing incremental diversity.

Transmission and Distribution

The Nevada Utilities' transmission system is part of the Western Interconnection, a regional grid in the United States. The Western Interconnection includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. The Nevada Utilities' transmission system, together with contractual rights on other transmission systems, enables the Nevada Utilities to integrate and access generation resources to meet their customer load requirements. Nevada Power's transmission and distribution systems included approximately 1,900 miles of transmission lines, 14,000 miles of distribution lines and 210 substations as of December 31, 2020. Sierra Pacific's transmission and distribution systems included approximately 4,200 miles of transmission lines, 9,500 miles of distribution lines and 200 substations as of December 31, 2020.

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ON Line is a 231-mile, 500-kV transmission line connecting Nevada Power's and Sierra Pacific's service territories. ON Line provides the ability to jointly dispatch energy throughout Nevada and provide access to renewable energy resources in parts of northern and eastern Nevada, which enhances the Nevada Utilities' ability to manage and optimize their generating facilities. ON Line provides between 600 MW northbound and 900 MW southbound of transfer capability with interconnection between the Robinson Summit substation on the Sierra Pacific system and the Harry Allen substation on the Nevada Power system. ON Line was a joint project between the Nevada Utilities and Great Basin Transmission, LLC. The Nevada Utilities own a 25% interest in ON Line and have entered into a long-term transmission use agreement with Great Basin Transmission, LLC for its 75% interest in ON Line until 2054. The Nevada Utilities share of its 25% interest in ON Line and the long-term transmission use agreement is split 75% for Nevada Power and 25% for Sierra Pacific, previously split 95% for Nevada Power and 5% for Sierra Pacific. In December 2019, the PUCN approved an order to update the split starting January 1, 2020 to 75% for Nevada Power and 25% for Sierra Pacific to more accurately reflect the benefits obtained from the transmission line. In August 2020, the FERC approved the amended agreement between the Nevada Utilities and Great Basin Transmission, LLC that reallocated the PUCN-approved, updated ownership percentage from Nevada Power to Sierra Pacific.

Future Generation, Conservation and Energy Efficiency

        Energy Supply Planning

Within the energy supply planning process, there are four key components covering different time frames:

IRPs are filed anby the Nevada Utilities for approval by the PUCN every three years and the Nevada Utilities may, as necessary, file amendments to their IRPs. IRPs are prepared in compliance with Nevada laws and regulations and cover a 20-year period. Nevada law governing the IRP process was modified in 2017 and now requires joint filings by Nevada Power and Sierra Pacific. IRPs develop a comprehensive, integrated plan that considers customer energy requirements and propose the resources to meet those requirements in a manner that is consistent with prevailing market fundamentals. The ultimate goal of the IRPs is to balance the objectives of minimizing costs and reducing volatility while reliably meeting the electric regulatory rateneeds of the Nevada Utilities' customers. Costs incurred to complete projects approved through the IRP process still remain subject to review withfor reasonableness by the PUCN. The filing requested no incremental annual revenue relief. In October 2016, Sierra Pacific
Energy Supply Plans ("ESP") are filed with the PUCN a settlement agreement resolving most, but not all, issuesfor approval and operate in the proceeding and reduced Sierra Pacific's electric revenue requirement by $3 million spread evenly to all rate classes. In December 2016, the PUCN approved the settlement agreement and established an additional six MW of net metering capacity under the grandfathered rates, which are those net metering rates that were in effect prior to January 2016; the order establishes cost-based rates and a value-based excess energy credit for customers who choose to install private generation after the six MW limitation is reached. The new rates were effective January 1, 2017. In January 2017, Sierra Pacific filed a petition for reconsideration relating to the creation of the additional six MW of net metering at the grandfathered rates. Sierra Pacific believes the effects of the PUCN decision results in additional cost shifting to non-net metering customers and reduces the stipulated rate reduction for other customer classes. In June 2017, the PUCN denied the petition for reconsideration.

In June 2016, Sierra Pacific filed a gas regulatory rate reviewconjunction with the PUCN.PUCN-approved 20-year IRP. The filing requestedESP has a slight decrease in its incremental annual revenue requirement. In October 2016, Sierra Pacificone- to three-year planning horizon and is an intermediate-term resource procurement and risk management plan that establishes the supply portfolio strategies within which intermediate-term resource requirements will be met with PUCN approval required for executing contracts of longer than three years.
Distributed Resource Plans ("DRP") are filed with the PUCN for approval and operate in conjunction with the PUCN-approved 20-year IRP. The DRP establishes a settlement agreement resolving all issuesformal process to aid in the proceedingcost-effective integration of distributed resources into the Nevada Utilities' distribution and reduced Sierra Pacific's gas revenue requirement by $2 million. In December 2016,transmission process and ultimately the NV Energy utilities' electricity grid.
Action plans are filed with the PUCN approvedfor approval and operate in conjunction with the settlement agreement.PUCN-approved 20-year IRP and PUCN-approved ESP. The action plan establishes tactical execution activities with a one-month to twelve-month focus.

In July 2020, the Nevada Utilities filed their fourth amendment to the IRP requesting approval of two new rates were effective January 1, 2017.

EEPRrenewable energy power purchase agreements, a utility-owned renewable facility, a utility-owned community scale renewable facility and EEIR

EEPR was establishedupdates to allowthe Transmission Plan. In July 2020, the Nevada Utilities also filed a joint petition requesting to defer the September 2020 filing of the Updated Distributed Resource Plans until its June 2021 Joint Integrated Resource Plan is filed. In September 2020, the PUCN issued an order granting the petition to defer the filing and ordered the Nevada Utilities to recoverconduct an informal workshop in October 2020 to provide an update of the costs of implementing energy efficiency programsdistributed resources plan and EEIR was established to offset the negative impacts on revenue associatedpresent information consistent with the successful implementation of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared bystatutory requirements. In November 2020, the Nevada Utilities filed a settlement stipulation for Phase I of the fourth amendment to the IRP, which was followed by a hearing. The settlement resolved all issues related to the load forecast, four renewable energy projects and certain transmission investments. The stipulation was approved by the PUCN in integrated resource plan proceedings. To the extent the Nevada Utilities' earned rate of return exceeds the rate of return used to set base general rates, the Nevada Utilities' are required to refund to customers EEIR revenue previously collected for that year. In March 2017, the Nevada Utilities each filed an application to reset the EEIR and EEPR and refund the EEIR revenue received in 2016, including carrying charges. In September 2017, the PUCN issued an order accepting a stipulation requiring Nevada Power to refund the 2016 revenue and reset the rates as filed effective October 1, 2017. The current EEIR liability for Nevada Power and Sierra Pacific is $10 million and $1 million, respectively, which is included in current regulatory liabilities on the Consolidated Balance Sheets as of December 31, 2017.


Chapter 704B Applications

Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one MW or more to file with the PUCN an application to purchase energy from alternative providers of a new electric resource and become distribution only service customers. On a case-by-case basis, the PUCN will assess the application and may deny or grant the application subject to conditions, including paying an impact fee, paying on-going charges and receiving approval for specific alternative energy providers and terms. The impact fee and on-going charges are assessed to alleviate the burden on other Nevada customers for the applicant's share of previously committed investments and long-term renewable contracts and are set at a level designed such that the remaining customers are not subjected to increased costs.

In May 2015, MGM Resorts International ("MGM") and Wynn Las Vegas, LLC ("Wynn"), filed applications with the PUCN to purchase energy from alternative providers of a new electric resource and become distribution only service customers of Nevada
Power. In December 2015, the PUCN granted the applications subject to conditions, including paying an impact fee, on-going charges and receiving approval for specific alternative energy providers and terms. In December 2015, the applicants filed petitions for reconsideration. In January 2016, the PUCN granted reconsideration and updated some of the terms, including removing a limitation related to energy purchased indirectly from NV Energy. In September 2016, MGM and Wynn paid impact fees of $82 million and $15 million, respectively. In October 2016, MGM and Wynn became distribution only service customers and started procuring energy from another energy supplier. In April 2017, Wynn filed a motion with the PUCN seeking relief from the January 2016 order and requested the PUCN adopt an alternative impact fee and revise on-going charges associated with retirement of assets and high cost renewable contracts. This request is still pending. In May 2017, a stipulation reached between MGM, Regulatory Operations Staff and the Bureau of Consumer Protection2020. Phase II hearing was filed requiring Nevada Power to reduce the original $82 million impact fee by $16 million and apply the credit against MGM's remaining on-going charge obligation. In June 2017, the PUCN approved the stipulation as filed.

In September 2016, Switch, Ltd. ("Switch"), a customer of the Nevada Utilities, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Nevada Power and Sierra Pacific. In December 2016, the PUCN approved a stipulation agreement that allows Switch to purchase energy from alternative providers subject to conditions, including paying an impact fee to Nevada Power. In May 2017, Switch paid impact fees of $27 million and, in June 2017, Switch became a distribution only service customer and started procuring energy from another energy supplier.

In November 2016, Caesars Enterprise Service ("Caesars"), a customer of the Nevada Utilities, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Nevada Power and Sierra Pacific. In March 2017, the PUCN approved the application allowing Caesars to purchase energy from alternative providers subject to conditions, including paying an impact fee. In March 2017, Caesars provided notice that it intends to pay the impact fee monthly for three and six years at Sierra Pacific and Nevada Power, respectively, and proceed with purchasing energy from alternative providers. In July 2017, Caesars made the required compliance filings and, in September 2017, the PUCN issued an order allowing Caesars to acquire electric energy and ancillary services from another energy supplier and become a distribution only service customer of the Nevada Utilities. In December 2017, Caesars provided notice that it intends to transition eligible meters in the Nevada Power service territory to unbundled electric servicescheduled in February 2018 at the earliest. In January 2018, Caesars became a distribution only service customer and started procuring energy from another energy supplier for its eligible meters in the Sierra Pacific service territory.2021.

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In May 2017, Peppermill Resort Spa Casino ("Peppermill"), a customer of Sierra Pacific, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Sierra Pacific. In August 2017, the PUCN approved a stipulation allowing Peppermill to purchase energy from alternative providers subject to conditions, including paying an impact fee. In September 2017, Peppermill provided notice that it intends to pay the impact fee and proceed with purchasing energy from alternative providers.



Net Metering

Nevada enacted Senate Bill 374 ("SB 374") on June 5, 2015. The legislation required the Nevada Utilities to prepare cost-of-service studies and propose new rules and rates for customers who install private, renewable generating resources. In July 2015, the Nevada Utilities made filings in compliance with SB 374 and the PUCN issued final orders December 23, 2015.

The final orders issued by the PUCN established separate rate classes for customers who install private, renewable generating facilities. The establishment of separate rate classes recognizes the unique characteristics, costs and services received by these partial requirements customers. The PUCN also established new, cost-based rates or prices for these new customer classes, including increases in the basic service charge and related reductions in energy charges. Additionally, the PUCN established a separate value for compensating customers who produce and deliver excess energy to the Nevada Utilities. The valuation considered eleven factors, including alternatives available to the Nevada Utilities. The PUCN established a gradual, five-step process for transition over four years to the new, cost-based rates.

In January 2016, the PUCN denied requests to stay the order issued December 23, 2015. The PUCN also voted to reopen the evidentiary proceeding to address the application of new net metering rules for customers who applied for net metering service before the issuance of the final order. In February 2016, the PUCN affirmed most of the provisions of the December 23, 2015 order and adopted a twelve-year transition plan for changing rates for net metering customers to cost-based rates for utility services and value-based pricing for excess energy. Subsequently, two solar industry interest groups filed petitions for judicial review of the PUCN order issued in February 2016. The petitions request that the court either modify the PUCN order or direct the PUCN to modify its decision in a manner that would maintain rates and rules of service applicable to net metering as existed prior to the December 23, 2015 order of the PUCN. Two of the three petitions filed by the solar industry interest groups have been dismissed. In September 2016, the state district court issued an order in the third petition. The court concluded that the PUCN failed to provide existing net metering customers adequate legal notice of the proceeding. The court affirmed the PUCN's decision to establish new net energy metering rates and apply those to new net metering customers. The Nevada state district court decision was appealed to the Nevada Supreme Court, which was settled and dismissed in August 2017.

In July 2016, the Nevada Utilities filed applications with the PUCN to revert back to the original net metering rates for a period of twenty years for customers who installed or had an active application for private, renewable generating facilities as of December 31, 2015. In September 2016, the PUCN issued an order accepting the stipulation and approved the applications as modified by the stipulation. In December 2016, as a part of Sierra Pacific's regulatory rate review, the PUCN issued an order establishing an additional six MWs of net metering under the grandfathered rates in the Sierra Pacific service territory. As mentioned above, Sierra Pacific filed a petition for reconsideration relating to the additional six MWs of net metering, which was denied in June 2017.

Nevada enacted Assembly Bill 405 ("AB 405") on June 15, 2017. The legislation, among other things, established net metering crediting rates for private generation customers with installed net metering systems less than 25 kilowatts. Under AB 405, private generation customers will be compensated at 95% of the rate the customer would have paid for a kilowatt-hour of electricity supplied by the Nevada Utilities for the first 80 MWs of cumulative installed capacity of all net metering systems in Nevada, 88% of the rate the customer would have paid for a kilowatt-hour of electricity supplied by the Nevada Utilities for the next 80 MWs of cumulative installed capacity in Nevada, 81% of the rate the customer would have paid for a kilowatt-hour of electricity supplied by the Nevada Utilities for the next 80 MWs of cumulative installed capacity in Nevada and 75% of the rate the customer would have paid for a kilowatt-hour of electricity supplied by the Nevada Utilities for any additional private generation capacity. In July 2017, the Nevada Utilities filed with the PUCN proposed amendments to their tariffs necessary to comply with the provisions of AB 405. The filing in July 2017 also included a proposed optional time of use rate tariff for both Nevada Power and Sierra Pacific, which has not yet been set for procedural review. In September 2017, the PUCN issued an order directing the Nevada Utilities to place all new private generation customers who have submitted applications after June 15, 2017 into a new rate class with rates equal to the rate class they would be in if they were not private generation customers. Private generation customers with installed net metering systems less than 25-kilowatts prior to June 15, 2017 may elect to migrate to the new rate class created under AB 405 or stay in their otherwise-applicable rate class. The new AB 405 rates became effective December 1, 2017.

Emissions Reduction and Capacity Replacement Plan


In compliance with Senate Bill No. 123, Nevada Power retired 255 MWs of coal-fueled generation in 2019 in addition to the 557 MWs of coal-fueled generation retired in 2017. Consistent with the Emissions Reduction and Capacity Replacement Plan ("ERCR Plan"), between 2014 and 2016, Nevada Power acquired a 272-MW536 MWs of natural gas co-generating facility in 2014, acquired a 210-MW natural gas peaking facility in 2014,generating resources, executed long-term power purchase agreements for 200 MWs of nameplate renewable energy capacity and constructed a 15-MW solar photovoltaic facility in 2015 and contracted two renewable power purchase agreements with 100-MW solar photovoltaic generating facilities in 2015. In February 2016,facility. Nevada Power solicited proposalshas the option to acquire 35 MWMWs of nameplate renewable energy capacity to be owned by Nevada Power. Nevada Power did not enter into any agreements to acquire the 35 MW of nameplate renewable energy capacity; however, it has the option to acquire the 35 MW in the future under the ERCR Plan, subject to PUCN approval.

    Energy Efficiency Programs

The Nevada Utilities have provided a comprehensive set of energy efficiency, demand response and conservation programs to their Nevada electric customers. The programs are designed to reduce energy consumption and more effectively manage when energy is used, including management of seasonal peak loads. Current programs offer services to customers such as energy audits and customer education and awareness efforts that provide information on how to improve the efficiency of their homes and businesses. To assist customers in investing in energy efficiency, the Nevada Utilities have offered rebates or incentives encouraging the purchase and installation of high-efficiency equipment such as lighting, heating and cooling equipment, weatherization, motors, process equipment and systems, as well as incentives for efficient construction. Incentives are also paid to residential customers who participate in the air conditioner load control program and nonresidential customers who participate in the nonresidential load management program. Energy efficiency program costs are recovered through annual rates set by the PUCN, and adjusted based on the Nevada Utilities' annual filing to recover current program costs and any over or under collections from the prior filing, subject to prudence review. During 2020, Nevada Power spent $33 million on energy efficiency programs, resulting in an estimated 218,913 MWhs of electric energy savings and an estimated 207 MWs of electric peak load management. During 2020, Sierra Pacific spent $10 million on energy efficiency programs, resulting in an estimated 96,933 MWhs of electric energy savings and an estimated 32 MWs of electric peak load management.

Regulated Natural Gas Operations

Sierra Pacific is engaged in the distribution of natural gas to customers in its service territory and the related procurement, transportation and storage of natural gas for the benefit of those customers. Sierra Pacific purchases natural gas from various suppliers and contracts with interstate natural gas pipelines for transportation of the natural gas from the production areas to Sierra Pacific's service territory and for storage services to manage fluctuations in system demand and seasonal pricing. Sierra Pacific sells natural gas and delivery services to end-use customers on its distribution system; sells natural gas to other utilities, municipalities and energy marketing companies; and transports natural gas through its distribution system for a number of end-use customers who have independently secured their supply of natural gas. During 2020, 10% of the total natural gas delivered through Sierra Pacific's distribution system was for transportation service.

Natural gas property consists primarily of natural gas mains and service lines, meters, and related distribution equipment, including feeder lines to communities served from natural gas pipelines owned by others. The natural gas distribution facilities of Sierra Pacific included 3,500 miles of natural gas mains and service lines as of December 31, 2020.
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Customer Usage and Seasonality

The percentages of natural gas sold to Sierra Pacific's retail and wholesale customers by class of customer, total Dths of natural gas sold, total Dths of transportation service and the average number of retail customers for the years ended December 31 were as follows:
202020192018
Residential56 %57 %55 %
Commercial(1)
28 29 28 
Industrial(1)
10 10 11 
Total retail94 96 94 
Wholesale(2)
100 %100 %100 %
Total Dths of natural gas sold (in thousands)18,622 19,846 18,334 
Total Dths of transportation service (in thousands)1,850 2,217 2,250 
Total average number of retail customers (in thousands)174 170 167 

(1)Commercial and industrial customers are classified primarily based on the nature of their business and natural gas usage. Commercial customers are non-residential customers with monthly gas usage less than 12,000 therms during five consecutive winter months. Industrial customers are non-residential customers that use natural gas in excess of 12,000 therms during one or more winter months.

(2)Wholesale sales are generally made to other utilities, municipalities and energy marketing companies for eventual resale to end-use customers.

There are seasonal variations in Sierra Pacific's regulated natural gas business that are principally due to the use of natural gas for heating. Typically, 47-56% of Sierra Pacific's regulated natural gas revenue is reported in the months of December through March.

On February 3, 2020, Sierra Pacific recorded its highest peak-day natural gas delivery of 141,416 Dths, which is 22,158 Dths less than the record peak-day delivery of 163,574 Dths set on December 9, 2013. This peak-day delivery consisted of 95% traditional retail sales service and 5% transportation service.

Fuel Supply and Capacity

The purchase of natural gas for Sierra Pacific's regulated natural gas operations is done in combination with the purchase of natural gas for Sierra Pacific's regulated electric operations. In response to energy supply challenges, Sierra Pacific has adopted an approach to managing the energy supply function that has three primary elements, as discussed earlier under Generating Facilities and Fuel Supply. Similar to Sierra Pacific's regulated electric operations, as long as Sierra Pacific's purchases of natural gas are deemed prudent by the PUCN, through its annual prudency review, Sierra Pacific is permitted to recover the cost of natural gas. Sierra Pacific also has the ability, with PUCN approval, to reset quarterly the BTERs, based on the last twelve months fuel costs, and to reset quarterly DEAA.

Human Capital

Employees

As of December 31, 2020, Nevada Power had approximately 1,400 employees, of which approximately 700 were covered by a union contract with the International Brotherhood of Electrical Workers.

As of December 31, 2020, Sierra Pacific had approximately 1,000 employees, of which approximately 500 were covered by a union contract with the International Brotherhood of Electrical Workers.

For more information regarding Nevada Power's and Sierra Pacific's human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.


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NORTHERN POWERGRID

Northern Powergrid, an indirect wholly owned subsidiary of BHE, is a holding company which owns two companies that distribute electricity in Great Britain, Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc. In addition to the Northern Powergrid Distribution Companies, Northern Powergrid also owns a meter asset rental business that leases meters to energy suppliers in the United Kingdom, an engineering contracting business that provides electrical infrastructure contracting services primarily to third parties and a hydrocarbon exploration and development business that is focused on developing integrated upstream gas projects in Europe and Australia.

The Northern Powergrid Distribution Companies serve 3.9 million end-users and operate in the north-east of England from North Northumberland through Tyne and Wear, County Durham and Yorkshire to North Lincolnshire, an area covering 10,000 square miles. The principal function of the Northern Powergrid Distribution Companies is to build, maintain and operate the electricity distribution network through which the end-user receives a supply of electricity.

The Northern Powergrid Distribution Companies receive electricity from the national grid transmission system and from generators that are directly connected to the distribution network and distribute it to end-users' premises using their networks of transformers, switchgear and distribution lines and cables. Substantially all of the end-users in the Northern Powergrid Distribution Companies' distribution service areas are directly or indirectly connected to the Northern Powergrid Distribution Companies' networks and electricity can only be delivered to these end-users through their distribution systems, thus providing the Northern Powergrid Distribution Companies with distribution volumes that are relatively stable from year to year. The Northern Powergrid Distribution Companies charge fees for the use of their distribution systems to the suppliers of electricity.

The suppliers purchase electricity from generators, sell the electricity to end-user customers and use the Northern Powergrid Distribution Companies' distribution networks pursuant to an industry standard "Distribution Connection and Use of System Agreement." During 2020, RWE Npower PLC and certain of its affiliates and British Gas Trading Limited represented 15% and 12%, respectively, of the total combined distribution revenue of the Northern Powergrid Distribution Companies. Variations in demand from end-users can affect the revenues that are received by the Northern Powergrid Distribution Companies in any year, but such variations have no effect on the total revenue that the Northern Powergrid Distribution Companies are allowed to recover in a price control period. Under- or over-recoveries against price-controlled revenues are carried forward into prices for future years.

The Northern Powergrid Distribution Companies' combined service territory features a diverse economy with no dominant sector. The mix of rural, agricultural, urban and industrial areas covers a broad customer base ranging from domestic usage through farming and retail to major industry including automotives, chemicals, mining, steelmaking and offshore marine construction. The industry within the area is concentrated around the principal centers of Newcastle, Middlesbrough, Sheffield and Leeds.

The price controlled revenue of the Northern Powergrid Distribution Companies is set out in the special conditions of the licenses of those companies. The licenses are enforced by the regulator, GEMA, through the Ofgem and limit increases to allowed revenues (or may require decreases) based upon the rate of inflation, other specified factors and other regulatory action. Changes to the price controls can be made by the regulator, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's Competition and Markets Authority ("CMA"). It has been the convention in Great Britain for regulators to conduct periodic regulatory reviews before making proposals for any changes to the price controls. The current electricity distribution price control became effective April 1, 2015 and will continue through March 31, 2023.


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GWhs and percentages of electricity distributed to the Northern Powergrid Distribution Companies' end-users and the total number of end-users as of and for the years ended December 31 were as follows:
202020192018
Northern Powergrid (Northeast) plc:
Residential5,252 40 %4,982 36 %5,125 36 %
Commercial(1)
1,411 11 1,644 12 1,782 13 
Industrial(1)
6,377 48 7,097 51 7,134 50 
Other142 156 198 
13,182 100 %13,879 100 %14,239 100 %
Northern Powergrid (Yorkshire) plc:
Residential7,694 39 %7,311 35 %7,509 36 %
Commercial(1)
2,048 11 2,391 12 2,558 12 
Industrial(1)
9,540 49 10,722 52 10,716 51 
Other217 236 268 
19,499 100 %20,660 100 %21,051 100 %
Total electricity distributed32,681 34,539 35,290 
Number of end-users (in thousands):
Northern Powergrid (Northeast) plc1,615 1,612 1,603 
Northern Powergrid (Yorkshire) plc2,319 2,314 2,301 
3,934 3,926 3,904 

(1)     The increase in industrial and decrease in commercial is largely due to the Great Britain-wide customer reclassifications which are in progress (as a result of Ofgem approved industry changes), negatively impacting commercial volumes by 100 GWhs in 2018 compared to 2017.

As of December 31, 2020, the combined electricity distribution network of the Northern Powergrid Distribution Companies included approximately 17,300 miles of overhead lines, 42,800 miles of underground cables and 770 major substations.

BHE PIPELINE GROUP (EASTERN ENERGY GAS)

BHE GT&S

BHE GT&S is an indirect wholly owned subsidiary of BHE. BHE GT&S' operations, through its ownership of Eastern Energy Gas, includes three interstate natural gas pipeline systems, one of the nation's largest underground natural gas storage systems and one liquefied natural gas export, import and storage facility. BHE GT&S' operations also include two smaller liquefied natural gas facilities, one field service company, and one gathering and processing company.

Eastern Energy Gas' principal subsidiaries are EGTS and Carolina Gas Transmission, LLC ("CGT"). EGTS's operations include natural gas transmission and storage pipelines located in Maryland, New York, Ohio, Pennsylvania, Virginia and West Virginia. EGTS also operates one of the nation's largest underground natural gas storage systems located in New York, Pennsylvania and West Virginia. CGT's operations include an interstate natural gas pipeline system located in South Carolina and southeastern Georgia. Eastern Energy Gas also owns a 50% equity interest in Iroquois Gas Transmission System L.P. ("Iroquois"). Iroquois owns and operates an interstate natural gas pipeline located in the states of New York and Connecticut.


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Eastern Energy Gas' LNG operations involve the export, import and storage of LNG at the Cove Point LNG Facility that is owned by Cove Point LNG, LP ("Cove Point"), located in Maryland, as well as the transportation of regasified LNG to the interstate pipeline grid and mid-Atlantic markets and the liquefaction of natural gas for export as LNG. Cove Point's LNG Facility has an operational peak regasification daily send-out capacity of approximately 1.8 million Dth and an aggregate LNG storage capacity of approximately 14.6 billions of cubic feet equivalent ("Bcfe"). In addition, Cove Point has a small liquefier that has the potential to produce approximately 15,000 Dth/day. The Liquefaction Facility consists of one LNG train with a nameplate outlet capacity of 5.25 million tonnes per annum ("Mtpa"). Cove Point has authorization from the Department of Energy ("DOE") to export up to 0.77 Bcfe/day (approximately 5.75 Mtpa) should the Liquefaction Facility perform better than expected. Cove Point's 36-inch diameter underground interstate natural gas pipelines are approximately 139 miles, with interconnections to Transcontinental Gas Pipeline, LLC in Fairfax County, Virginia, and with Columbia Gas Transmission, LLC and EGTS in Loudoun County, Virginia. Eastern Energy Gas operates, as the general partner, and owns a 25% limited partnership interest in the Cove Point liquefied natural gas export, import and storage facility. BHE GT&S also operates and has ownership interests in three smaller liquefied natural gas facilities in Alabama, Florida and Pennsylvania.

In total, Eastern Energy Gas operates approximately 5,400 miles of natural gas transmission, gathering and storage pipelines, of which approximately 5,300 miles are owned by Eastern Energy Gas, with a design capacity of 12.5 Bcf per day as well as approximately 100 miles of natural gas liquids pipelines operated by BHE GT&S. Eastern Energy Gas also operates 17 underground storage fields with a total operating storage design capacity of approximately 420 Bcf, of which approximately 306 Bcf relates to natural gas storage field capacity that Eastern Energy Gas owns.

BHE GT&S' pipeline system is configured with approximately 360 active receipt and delivery points. In 2020, BHE GT&S delivered over 2.0 trillion cubic feet ("Tcf") of natural gas to its customers.

BHE GT&S' natural gas transmission and storage earnings primarily result from rates established by FERC. Revenues derived from BHE GT&S' pipeline operations are primarily from reservation charges for firm transportation and storage services as provided for in their FERC-approved tariffs. Reservation charges are required to be paid regardless of volumes transported or stored. The profitability of these businesses is dependent on their ability, through the rates they are permitted to charge, to recover costs and earn a reasonable return on their capital investments. Approximately 91% of BHE GT&S' transmission capacity is subscribed including 88% under long-term contracts (two years or greater) and 3% on a year-to-year basis. BHE GT&S' storage services are 100% subscribed with long-term contracts. Additionally, BHE GT&S receives revenue from firm fee-based contractual arrangements, including negotiated rates, for certain pipeline transportation and LNG storage and terminal services. Variability in BHE GT&S' earnings results from changes in operating and maintenance expenditures, as well as changes in rates and the demand for services, which are dependent on weather, changes in commodity prices and the economy.

Except for quantities of natural gas owned and managed for operational and system balancing purposes, BHE GT&S does not own the natural gas that is transported through its system. The sale of natural gas for operational and system balancing purposes, sales from our field services company and sales of natural gas liquids accounts for the majority of the remaining operating revenue.

During 2020, BHE GT&S had two customers that each accounted for greater than 10% of its operating revenue and its ten largest customers accounted for 53% of its total operating revenue. BHE GT&S has agreements with terms through 2038 to retain the majority of its two largest customers' volumes. The loss of any of these significant customers, if not replaced, could have a material adverse effect on BHE GT&S.

Human Capital

Employees

As of December 31, 2020, Eastern Energy Gas had approximately 1,500 employees, consisting of approximately 1,100 natural gas operations employees and 400 corporate services employees. As of December 31, 2020, approximately 600 employees were covered by a union contract with the Utility Workers Union of America. For more information regarding Eastern Energy Gas' human capital disclosures, refer to Item 1. Business - General section of this Form 10-K.
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Northern Natural Gas

Northern Natural Gas, an indirect wholly owned subsidiary of BHE, owns the largest interstate natural gas pipeline system in the United States, as measured by pipeline miles, which reaches from west Texas to Michigan's Upper Peninsula. Northern Natural Gas primarily transports and stores natural gas for utilities, municipalities, gas marketing companies and industrial and commercial users. Northern Natural Gas' pipeline system consists of two commercial segments. Its traditional end-use and distribution market area in the northern part of its system, referred to as the Market Area, includes points in Iowa, Nebraska, Minnesota, Wisconsin, South Dakota, Michigan and Illinois. Its natural gas supply and delivery service area in the southern part of its system, referred to as the Field Area, includes points in Kansas, Texas, Oklahoma and New Mexico. The Market Area and Field Area are separated at a Demarcation Point ("Demarc"). Northern Natural Gas' pipeline system consists of 14,500 miles of natural gas pipelines, including 6,000 miles of mainline transmission pipelines and 8,500 miles of branch and lateral pipelines, with a Market Area design capacity of 6.3 Bcf per day, a Field Area delivery capacity of 1.7 Bcf per day to the Market Area and 1.4 Bcf per day to the West Texas area and over 79 Bcf of firm service and operational storage cycle capacity in five storage facilities. Northern Natural Gas' pipeline system is configured with approximately 2,240 active receipt and delivery points which are integrated with the facilities of LDCs. Many of Northern Natural Gas' LDC customers are part of combined utilities that also use natural gas as a fuel source for electric generation. Northern Natural Gas delivered over 1.3 Tcf of natural gas to its customers in 2020.

Northern Natural Gas' transportation rates and most of its storage rates are cost-based. These rates are designed to provide Northern Natural Gas with an opportunity to recover its costs of providing services and earn a reasonable return on its investments. In addition, Northern Natural Gas has fixed rates that are market-based for certain of its firm storage contracts with contract terms that expire in 2028.

Northern Natural Gas' operating revenue for the years ended December 31 was as follows (in millions):
202020192018
Transportation:
Market Area$633 65 %$544 64 %$518 58 %
Field Area - deliveries to Demarc137 14 106 12 102 11 
Field Area - other deliveries89 10 95 11 71 
Total transportation859 89 745 87 691 78 
Storage91 65 68 
Total transportation and storage revenue950 98 810 95 759 86 
Gas, liquids and other sales18 42 128 14 
Total operating revenue$968 100 %$852 100 %$887 100 %

Substantially all of Northern Natural Gas' Market Area transportation revenue is generated from reservation charges, with the balance from usage charges. Northern Natural Gas transports natural gas primarily to local distribution markets and end-users in the Market Area. Northern Natural Gas provides service to 84 utilities, including MidAmerican Energy, an affiliate company, which serve numerous residential, commercial and industrial customers. Most of Northern Natural Gas' transportation capacity in the Market Area is committed to customers under firm transportation contracts, where customers pay Northern Natural Gas a monthly reservation charge for the right to transport natural gas through Northern Natural Gas' system. Reservation charges are required to be paid regardless of volumes transported or stored. As of December 31, 2020, approximately 75% of Northern Natural Gas' customers' entitlement in the Market Area have terms beyond 2022 and approximately 51% beyond 2024. As of December 31, 2020, the weighted average remaining contract term for Northern Natural Gas' Market Area firm transportation contracts is over six years.

Northern Natural Gas' Field Area customers consist primarily of energy marketing companies and midstream companies, which take advantage of the price spread opportunities created between Field Area supply points and Demarc. In addition, there are a growing number of midstream customers that are delivering gas south in the Field Area to the Waha Hub market. The remaining Field Area transportation service is sold to power generators connected to Northern Natural Gas' system in Texas and New Mexico that are contracted on a long-term basis with a weighted average remaining contract term of six years, and various LDCs, energy marketing companies and midstream companies for both connected and off-system markets.


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Northern Natural Gas' storage services are provided through the operation of one underground natural gas storage field in Iowa and two underground natural gas storage facilities in Kansas. Additionally, Northern Natural Gas has two LNG storage peaking units, one in Iowa and one in Minnesota, that support its transportation service. The three underground natural gas storage facilities and two LNG storage peaking units have a total firm service and operational storage cycle capacity of over 79 Bcf and over 2.2 Bcf per day of peak delivery capability. These storage facilities provide operational flexibility for the daily balancing of Northern Natural Gas' system and provide services to customers for their winter peaking and year-round load swing requirements. Northern Natural Gas has 65.1 Bcf of firm storage contracts. Firm storage contracts at maximum tariff rates represent 54.4 Bcf, and the market-based rate contracts represent the remaining 10.7 Bcf. The average remaining contract term for firm storage contracts is five years.

Except for quantities of natural gas owned and managed for operational and system balancing purposes, Northern Natural Gas does not own the natural gas that is transported through its system. The sale of natural gas for operational and system balancing purposes accounts for the majority of the remaining operating revenue.

During 2020, Northern Natural Gas had two customers that each accounted for greater than 10% of its transportation and storage revenue and its ten largest customers accounted for 64% of its system-wide transportation and storage revenue. Northern Natural Gas has agreements with terms through 2029 and 2034 to retain the majority of its two largest customers' volumes. The loss of any of these significant customers, if not replaced, could have a material adverse effect on Northern Natural Gas.

Northern Natural Gas' extensive pipeline system, which is interconnected with many interstate and intrastate pipelines in the national grid system, has access to multiple major supply basins. Direct access is available from producers in the Anadarko, Permian and Hugoton basins, some of which have experienced increased production from shale and tight sands formations adjacent to Northern Natural Gas' pipeline. Since 2011, the pipeline has connected 2,395,000 Dths per day of supply access from the Midland and Delaware Basins within the Permian Basin area in west Texas and from the Granite Wash tight sands formations in the Texas panhandle and in Oklahoma. Additionally, Northern Natural Gas has interconnections with several interstate pipelines and several intrastate pipelines with receipt, delivery, or bi-directional capabilities. Because of Northern Natural Gas' location and multiple interconnections it is able to access natural gas from other key production areas, such as the Rocky Mountain, Williston, including the Bakken formation, and western Canadian basins. The Rocky Mountain basins are accessed through interconnects with Trailblazer Pipeline Company, Tallgrass Interstate Gas Transmission, LLC, Cheyenne Plains Gas Pipeline Company, LLC, Colorado Interstate Gas Company and Rockies Express Pipeline, LLC ("REX"). The western Canadian basins are accessed through interconnects with Northern Border Pipeline Company ("Northern Border"), Great Lakes Gas Transmission Limited Partnership ("Great Lakes") and Viking Gas Transmission Company ("Viking"). This supply diversity and access to both stable and growing production areas provides significant flexibility to Northern Natural Gas' system and customers.

Northern Natural Gas' system experiences significant seasonal swings in demand and revenue typically with approximately 60% of transportation revenue occurring during the months of November through March. This seasonality provides Northern Natural Gas with opportunities to deliver additional value-added services, such as firm and interruptible storage services. As a result of Northern Natural Gas' geographic location in the middle of the United States and its many interconnections with other pipelines, Northern Natural Gas has the opportunity to augment its steady end user and LDC revenue by capitalizing on opportunities for shippers to reach additional markets, such as Chicago, Illinois, other parts of the Midwest, and Texas, through interconnects.

Kern River

Kern River, an indirect wholly owned subsidiary of BHE, owns an interstate natural gas pipeline system that extends from supply areas in the Rocky Mountains to consuming markets in Utah, Nevada and California. Kern River operates 1,400 miles of mainline natural gas pipelines, with a design capacity of 2,166,575 Dths, or 2.2 Bcf, per day. The mainline pipeline extends from the system's point of origination near Opal, Wyoming, through the Central Rocky Mountains to Daggett, California. The mainline section consists of 1,300 miles of 36-inch diameter pipeline and 100 miles of various laterals that connect to the mainline. Except for quantities of natural gas owned for operational purposes, Kern River does not own the natural gas that is transported through its system. Kern River's transportation rates are cost-based. The rates are designed to provide Kern River with an opportunity to recover its costs of providing services and earn a reasonable return on its investments.


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Kern River's rates are based on a levelized rate design with recovery of 70% of the original investment during the initial long-term contracts ("Period One rates"). After expiration of the initial term, eligible customers have the option to elect service at rates ("Period Two rates") that are lower than Period One rates because they are designed to recover the remaining 30% of the original investment. To the extent that eligible customers do not contract for service at Period Two rates, the volumes are turned back and sold at market rates for varying terms. As of December 31, 2020, initial Period One contracts total 331,921 Dths per day. Period Two contracts total 1,054,029 Dths per day and 569,631 Dths per day of total turned back volume has an average remaining contract term of more than two years. The remaining capacity is sold on a short-term basis at market rates.

As of December 31, 2020, approximately 76% of Kern River's design capacity of 2,166,575 Dths per day is contracted pursuant to long-term firm natural gas transportation service agreements, whereby Kern River receives natural gas on behalf of customers at designated receipt points and transports the natural gas on a firm basis to designated delivery points. In return for this service, each customer pays Kern River a fixed monthly reservation fee based on each customer's maximum daily quantity, which represents nearly 86% of total operating revenue, and a commodity charge based on the actual amount of natural gas transported pursuant to its long-term firm natural gas transportation service agreements and Kern River's tariff.

These long-term firm natural gas transportation service agreements expire between April 2022 and April 2033 and have a weighted-average remaining contract term of over eight years. Kern River's customers include electric and natural gas distribution utilities, major oil and natural gas companies or affiliates of such companies, electric generating companies, energy marketing and trading companies and financial institutions. As of December 31, 2020, 73% of the firm capacity under contract has primary delivery points in California, with the flexibility to access secondary delivery points in Nevada and Utah. In 2019, Kern River provided approximately 26% of California's demand for natural gas.

During 2020, Kern River had two customers, including Nevada Power was granted approvalCompany, d/b/a NV Energy, that each accounted for greater than 10% of its revenue. The loss of these significant customers, if not replaced, could have a material adverse effect on Kern River.

Competition

The Pipeline Companies compete with other pipelines on the basis of cost, flexibility, reliability of service and overall customer service, with the customer's decision being made primarily on the basis of delivered price, which includes both the natural gas commodity cost and transportation costs. The Pipeline Companies also compete with midstream operators and gas marketers seeking to provide or arrange transportation, storage and other services to meet customer needs. Natural gas competes with alternative energy sources, including coal, nuclear energy, wind, geothermal, solar and fuel oil and the electricity generated from these alternative energy sources. Legislation and governmental regulations, weather, futures markets, production costs and other factors beyond the control of the Pipeline Companies, influence the price of the natural gas commodity. Additionally, natural gas demand could be adversely affected by laws mandating or incenting renewable power sources that produce fewer GHG emissions than natural gas.

The Pipeline Companies generate a substantial portion of their revenue from long-term firm contracts for transportation and storage services and are therefore insulated from competitive factors during the terms of the contracts. When these long-term contracts expire, the Pipeline Companies face competitive pressures from other natural gas pipeline facilities. The Pipeline Companies' ability to extend existing customer contracts, remarket expiring contracted capacity or market new capacity is dependent on competitive alternatives, the regulatory environment and the market supply and demand factors at the relevant dates these contracts are eligible to be renewed or extended. The duration of new or renegotiated contracts will be affected by current commodity and transportation prices, competitive conditions and customers' judgments concerning future market trends and volatility.

Subject to regulatory requirements, the Pipeline Companies attempt to recontract or remarket capacity at the maximum rates allowed under their tariffs, although at times the Pipeline Companies discount these rates to remain competitive. Historically, the Pipeline Companies have been able to provide competitively priced services because of access to a variety of relatively low cost supply basins, cost control measures and the relatively high level of firm entitlement that is sold on a seasonal and annual basis, which lowers the per unit cost of transportation. To date, the Pipeline Companies have avoided significant pipeline system bypasses.

BHE GT&S' natural gas transmission operations compete with domestic and Canadian pipeline companies. The combination of reliable and flexible services, access to highly liquid and attractive pricing locations, significant storage capability, availability of numerous receipt and delivery points along its pipeline system and capacity rights held on third party pipelines enable BHE GT&S to tailor its services to meet the needs of individual customers.

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Northern Natural Gas needs to compete aggressively to serve existing load and add new load. Northern Natural Gas' attractive competitive position relative to other pipelines in the upper Midwest is reinforced each winter as customers expect, and receive, reliable deliveries of natural gas for their critical markets. Northern Natural Gas provides customers access to multiple supply basins that allow customers to obtain reliable supplies at competitive prices, not subject to the natural gas grid dynamics from pipeline competition that would limit customers to a singular supply source. Northern Natural Gas has been successful in competing for a significant amount of the increased demand related to residential and commercial needs and the construction of new power plants and new fertilizer or other industrial plants.

Other than the short-term transportation associated with the Permian business, Northern Natural Gas expects the current level of Field Area contracting to Demarc to continue in the foreseeable future, as Market Area customers presently need to purchase competitively-priced supplies from the remaining 130 MWField Area to support their existing and growth demand requirements. However, the revenue received from these Field Area contracts is expected to decrease due to construction of new pipeline facilities.

Kern River is the only interstate pipeline that presently delivers natural gas directly from the Rocky Mountain gas supply region to end-users in the Southern California market. Kern River's levelized rate structure and access to upstream pipelines, storage facilities and economic Rocky Mountain gas reserves increase its competitiveness and attractiveness to end-users. Kern River believes it has an advantage relative to other interstate pipelines serving Southern California because its relatively new pipeline can be economically expanded and has required significantly less capital expenditures and ongoing maintenance than other systems.

Cove Point's gas transportation, LNG import and storage operations, as well as the Liquefaction Facility's capacity, are contracted primarily under long-term fixed reservation fee agreements. However, in the future Cove Point may compete with other independent terminal operators as well as major oil and gas companies on the basis of terminal location, services provided and price. In addition, the Liquefaction Facility may face competition on a global scale as international customers explore other options to meet their energy needs.

BHE TRANSMISSION

BHE Canada

BHE Canada, an indirect wholly owned subsidiary of BHE, primarily owns AltaLink, a regulated electric transmission-only utility company headquartered in Alberta, Canada serving approximately 85% of Alberta's population. AltaLink's high voltage transmission lines and related facilities transmit electricity from generating facilities to major load centers, cities and large industrial plants throughout its 87,000 square mile service territory, which covers a diverse geographic area including most major urban centers in central and southern Alberta. AltaLink's transmission facilities, consisting of approximately 8,200 miles of transmission lines and approximately 310 substations as of December 31, 2020, are an integral part of the Silverhawk natural gas-fueled combined cycleAlberta Interconnected Electric System ("AIES"). BHE Canada also owns MATL Canada L.P., a company headquartered in Alberta, Canada, which operates 82 miles of the 230 kV Montana Alberta Tie Line located in Canada (the entire transmission line runs from Lethbridge, Alberta, Canada to Great Falls, Montana, and connects power grids in the two jurisdictions).

The AIES is a network or grid of transmission facilities operating at high voltages ranging from 69 kVs to 500 kVs. The grid delivers electricity from generating facility.units across Alberta, Canada through approximately 16,000 miles of transmission lines. The AIES is interconnected to British Columbia's transmission system that links Alberta with the North American western interconnected system, interconnection with Saskatchewan's transmission system and interconnection with Montana's transmission system.

AltaLink is a transmission facility owner within the electricity industry in Alberta and is permitted to charge a tariff rate for the use of its transmission facilities. Such tariff rates are established on a cost-of-service regulatory model, which is designed to allow AltaLink an opportunity to recover its costs of providing services and to earn a reasonable return on its investments. Transmission tariffs are approved by the AUC and are collected from the AESO.

The electricity industry in Alberta consists of four principal segments. Generators sell wholesale power into the power pool operated by the AESO and through direct contractual arrangements. Alberta's transmission system or grid is composed of high voltage power lines and related facilities that transmit electricity from generating facilities to distribution networks and directly connected end-users. Distribution facility owners are regulated by the AUC and are responsible for arranging for, or providing, regulated rate and regulated default supply services to convey electricity from transmission systems and distribution-connected generators to end-use customers. Retailers can procure energy through the power pool, through direct contractual arrangements with energy suppliers or ownership of generation facilities and arrange for its distribution to end-use customers.

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The AESO mandate is defined in the Electric Utilities Act (Alberta) and its regulations, and requires the AESO to assess both current and future needs of Alberta's interconnected electrical system. In June 2016, NevadaSeptember 2019, the AESO released the 2019 Long-term Outlook, which is the AESO's forecast of Alberta's load and generation over the next 20 years, and is used as one input to guide the AESO in planning Alberta's transmission system. The 2019 Long-term Outlook includes a Reference Case Scenario, which is the AESO's main corporate forecast for long-term load growth and generation development in Alberta, and a set of alternative scenarios that are developed to understand future uncertainties. The Reference Case Scenario forecasts Alberta's electricity demand to grow at an annual rate of 0.9% over the next 20 years and a total of approximately 13 gigawatts of new generation capacity to be added for the same period. Other scenarios are developed based on modifying assumptions used in the Reference Case Scenario to reflect higher cogeneration development, alternative renewable policy, higher economic growth, lower economic growth, and a more diversified Alberta economy. The AESO indicates that it will continue monitoring economic, policy and industry development and if a scenario becomes more likely, the AESO may adopt it as its main forecast.

In January 2020, the AESO released the 2020 Long-term Transmission Plan. Developed based on a set of broad scenarios, the 2020 Long-term Transmission Plan seeks to optimize the use of Alberta's existing transmission system, and plan development of new transmission in a timely manner to provide for the safe, dependable and efficient delivery of electricity across Alberta. The AESO recognizes that the electricity industry is changing and therefore it continues to evolve its approach to planning. The 2020 Long-term Transmission Plan identifies 20 transmission developments proposed over the next five years, valued at approximately C$1.4 billion. These developments are estimated to increase average transmission rates by about C$0.50—C$0.70 per MW hour, starting in 2025. Approximately C$1.0 billion of the transmission developments are in AltaLink's service territory. Each of these developments will still require detailed needs analysis and regulatory approval prior to proceeding.
BHE U.S. Transmission

BHE U.S. Transmission, a wholly owned subsidiary of BHE, is engaged in various joint ventures to develop, own and operate transmission assets and is pursuing additional investment opportunities in the United States. Currently, BHE U.S. Transmission has two joint ventures with transmission assets that are operational. In May 2020, BHE U.S. Transmission acquired the general partner and limited partner interests in MATL LLP, a U.S based company with 132 line miles in the U.S. of the total 214 mile 230 kV line running from Lethbridge, Alberta, Canada to Great Falls, Montana.

BHE U.S. Transmission indirectly owns a 50% interest in ETT, along with subsidiaries of American Electric Power executedCompany, Inc. ("AEP"). ETT owns and operates electric transmission assets in the ERCOT and, as of December 31, 2020, had total assets of $3.2 billion. ETT's transmission system includes approximately 1,900 miles of transmission lines and 38 substations as of December 31, 2020.

BHE U.S. Transmission also indirectly owns a 25% interest in Prairie Wind Transmission, LLC, a joint venture with AEP and Westar Energy, Inc., to build, own and operate a 108-mile, 345-kV transmission project in Kansas. The project had total assets of $136 million as of December 31, 2020.


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BHE RENEWABLES

The subsidiaries comprising the BHE Renewables reportable segment own interests in several independent power projects in the United States and one in the Philippines. The following table presents certain information concerning these independent power projects as of December 31, 2020:
PowerFacilityNet
PurchaseNetOwned
EnergyYearAgreementPowerCapacityCapacity
Generating FacilityLocationSourceInstalledExpiration
Purchaser(1)
(MWs)(2)
(MWs)(2)
WIND:
Grande PrairieNebraskaWind20162036OPPD400 400 
Jumbo RoadTexasWind20152033AE300 300 
Santa RitaTexasWind20182025-2038KC, CODTX, MES300 300 
Walnut RidgeIllinoisWind20182028USGSA212 212 
Pinyon Pines ICaliforniaWind20122035SCE168 168 
Pinyon Pines IICaliforniaWind20122035SCE132 132 
Bishop Hill IIIllinoisWind20122032Ameren81 81 
MarshallKansasWind20162036MJMEC, KPP, KMEA & COIMO72 72 
1,665 1,665 
SOLAR:
TopazCaliforniaSolar2013-20142039PG&E550 550 
Solar Star 1CaliforniaSolar2013-20152035SCE310 310 
Solar Star 2CaliforniaSolar2013-20152035SCE276 276 
Agua CalienteArizonaSolar2012-20132039PG&E290 142 
Alamo 6TexasSolar20172042CPS110 110 
Community Solar Gardens(6)
MinnesotaSolar2016-20182041-2043(5)98 98 
PearlTexasSolar20172042CPS50 50 
1,684 1,536 
NATURAL GAS:
CordovaIllinoisNatural Gas2001NANA512 512 
Power ResourcesTexasNatural Gas1988NANA212 212 
SaranacNew YorkNatural Gas1994NANA245 196 
YumaArizonaNatural Gas19942024SDG&E50 50 
1,019 970 
GEOTHERMAL:
Imperial Valley ProjectsCaliforniaGeothermal1982-2000(3)(3)345 345 
345 345 
HYDROELECTRIC:
Casecnan Project(4)
PhilippinesHydroelectric20012021NIA150 128 
WailukuHawaiiHydroelectric19932023HELCO10 10 
160 138 
Total Available Generating Capacity4,873 4,654 

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(1)San Diego Gas & Electric Company ("SDG&E"); Pacific Gas and Electric Company ("PG&E"), Ameren Illinois Company ("Ameren"), Southern California Edison ("SCE"), the Philippine National Irrigation Administration ("NIA"); Hawaii Electric Light Company, Inc. ("HELCO"); Austin Energy ("AE"); Omaha Public Power District ("OPPD"); Kimberly-Clark Corporation ("KC"); City of Denton, TX ("CODTX"); MidAmerican Energy Services, LLC ("MES"); U.S. General Services Administration ("USGSA"); Missouri Joint Municipal Electric Commission ("MJMEC"); Kansas Power Pool ("KPP"); Kansas Municipal Energy Agency ("KMEA"); City of Independence, MO ("COIMO"); and CPS Energy ("CPS").
(2)Facility Net Capacity represents the lesser of nominal ratings or any limitations under applicable interconnection, power purchase, or other agreements for intermittent resources and the total net dependable capability available during summer conditions for all other units. An intermittent resource's nominal rating is the manufacturer's contractually specified capability (in MWs) under specified conditions. Net Owned Capacity indicates BHE Renewables' ownership of Facility Net Capacity.
(3)Approximately 12% of the Company's interests in the Imperial Valley Projects' Contract Capacity are currently sold to Southern California Edison Company under a long-term power purchase agreement expiring in 2026. Certain long-term power purchase agreement renewals for 100252 MWs have been entered into with other parties at fixed prices that expire from 2028 to 2039, of which 202 MWs mature in 2039.
(4)Under the terms of the agreement with the NIA, CalEnergy Philippines will own and operate the Casecnan project for a 20-year cooperation period which ends December 11, 2021, after which ownership and operation of the project will be transferred to the NIA at no cost on an "as-is" basis. NIA also pays CalEnergy Philippines for delivery of water pursuant to the agreement.
(5)The power purchasers are commercial, industrial and not-for-profit organizations.
(6)The community solar gardens project is consolidated in the table above for convenience as it consists of 98 distinct entities that each own an approximately 1-MW solar garden with independent but substantially similar terms and conditions.

Additionally, BHE Renewables has invested $6.2 billion in 32 wind projects sponsored by third parties, commonly referred to as tax equity investments.

The percentages of BHE Renewables' operating revenue derived from the following business activities for the years ended December 31 were as follows:
202020192018
Solar48 %48 %51 %
Wind20 21 18 
Geothermal18 19 19 
Hydro
Natural gas11 10 
Total operating revenue100 %100 %100 %

HOMESERVICES

HomeServices, a wholly-owned subsidiary of BHE, is the largest residential real estate brokerage firm in the United States. In addition to providing traditional residential real estate brokerage services, HomeServices offers other integrated real estate services, including mortgage originations and mortgage banking; title and closing services; property and casualty insurance; home warranties; relocation services; and other home-related services. HomeServices' real estate brokerage business is subject to seasonal fluctuations because more home sale transactions tend to close during the second and third quarters of the year. As a result, HomeServices' operating results and profitability are typically higher in the second and third quarters relative to the remainder of the year. HomeServices' owned brokerages currently operate in nearly 900 offices in 30 states and the District of Columbia with over 43,000 real estate agents under 46 brand names. The United States residential real estate brokerage business is subject to the general real estate market conditions, is highly competitive and consists of numerous local brokers and agents in each market seeking to represent sellers and buyers in residential real estate transactions.

HomeServices' franchise network currently includes approximately 370 franchisees primarily in the United States and internationally in over 1,600 brokerage offices with over 53,000 real estate agents under two brand names. In exchange for certain fees, HomeServices provides the right to use the Berkshire Hathaway HomeServices or Real Living brand names and other related service marks, as well as providing orientation programs, training and consultation services, advertising programs and other services.


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OTHER ENERGY BUSINESSES

Effective January 1, 2016, MidAmerican Energy Company transferred its nonregulated energy operations to MES, a subsidiary of BHE. MES is a nonregulated energy business consisting of competitive electricity and natural gas retail sales. MES' electric operations predominantly include sales to retail customers in Illinois, Ohio, Texas, Pennsylvania, Maryland and other states that allow customers to choose their energy supplier. MES' natural gas operations predominantly include sales to retail customers in Iowa and Illinois. Electricity and natural gas are purchased from producers and third-party energy marketing companies and sold directly to commercial, industrial and governmental end-users. MES does not own electricity or natural gas production assets but hedges its contracted sales obligations either with physical supply arrangements or financial products. As of December 31, 2020, MES' contracts in place for the sale of electricity totaled 16,549 GWhs with an average term of 2.7 years and for the sale of natural gas totaled 20,655,206 Dths with an average term of 1.2 years. In addition, MES manages natural gas supplies for a number of smaller commercial end-users, which includes the sale of natural gas to these customers to meet their supply requirements. Refer to Item 7A in this Form 10-K for a discussion of commodity price risk and derivative contracts.

GENERAL REGULATION

BHE's regulated subsidiaries and certain affiliates are subject to comprehensive governmental regulation, which significantly influences their operating environment, prices charged to customers, capital structure, costs and, ultimately, their ability to recover costs and earn a reasonable return on invested capital. In addition to the discussion contained herein regarding general regulation, refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion regarding certain regulatory matters.

Domestic Regulated Public Utility Subsidiaries

The Utilities are subject to comprehensive regulation by various state, federal and local agencies. The more significant aspects of this regulatory framework are described below.

State Regulation

Historically, state regulatory commissions have established retail electric and natural gas rates on a cost-of-service basis, which are designed to allow a utility the opportunity to recover what each state regulatory commission deems to be the utility's reasonable costs of providing services, including a fair opportunity to earn a reasonable return on its investments based on its cost of debt and equity. In addition to return on investment, a utility's cost of service generally reflects a representative level of prudent expenses, including cost of sales, operating expense, depreciation and amortization and income and other tax expense, reduced by wholesale electricity and other revenue. The allowed operating expenses are typically based on actual historical costs adjusted for known and measurable or forecasted changes. State regulatory commissions may adjust cost of service for various reasons, including pursuant to a review of: (a) the utility's revenue and expenses during a defined test period, (b) the utility's level of investment and (c) changes in income tax laws. State regulatory commissions typically have the authority to review and change rates on their own initiative; however, they may also initiate reviews at the request of a utility, utility customers or organizations representing groups of customers. In certain jurisdictions, the utility and such parties, however, may agree with one another not to request a review of or changes to rates for a specified period of time.

The retail electric rates of the Utilities are generally based on the cost of providing traditional bundled services, including generation, transmission and distribution services. The Utilities have established ECAMs and other cost recovery mechanisms in certain states, which help mitigate their exposure to changes in costs from those assumed in establishing base rates.

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With certain limited exceptions, the Utilities have an exclusive right to serve retail customers within their service territories and, in turn, have an obligation to provide service to those customers. In some jurisdictions, certain classes of customers may choose to purchase all or a portion of their energy from alternative energy suppliers, and in some jurisdictions retail customers can generate all or a portion of their own energy. Under Oregon law, PacifiCorp has the exclusive right and obligation to provide electricity distribution services to all residential and nonresidential customers within its allocated service territory; however, nonresidential customers have the right to choose an alternative provider of energy supply. The impact of this right on PacifiCorp's consolidated financial results has not been material. In Washington, state law does not provide for exclusive service territory allocation. PacifiCorp's service territory in Washington is surrounded by other public utilities with whom PacifiCorp has from time to time entered into service area agreements under the jurisdiction of the WUTC. Under California law, PacifiCorp has the exclusive right and obligation to provide electricity distribution services to all residential and nonresidential customers within its allocated service territory; however, cities, counties and certain other public agencies have the right to choose to generate energy supply or elect an alternative provider of energy supply through the formation of a Community Choice Aggregator ("CCA"). To date, no CCA activity has occurred in PacifiCorp's California service territory. If a CCA is formed, PacifiCorp would continue to provide CCA customers transmission, distribution, metering and billing services and the CCA would provide generation supply. In addition, PacifiCorp would likely be able to collect costs from CCA customers for the generation-related costs that PacifiCorp incurred while they were customers of PacifiCorp. PacifiCorp would remain the electricity provider of last resort for these customers. In Illinois, state law has established a competitive environment so that all Illinois customers are free to choose their retail service supplier. For customers that choose an alternative retail energy supplier, MidAmerican Energy continues to have an ongoing obligation to deliver the supplier's energy to the retail customer. MidAmerican Energy bills the retail customer for such delivery services. MidAmerican Energy also has an obligation to serve customers at regulated cost-based rates and has a continuing obligation to serve customers who have not selected a competitive electricity provider. The impact of this right on MidAmerican Energy's financial results has not been material. In Nevada, Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one MW or more to file a letter of nameplateintent and application with the PUCN to acquire electric energy and ancillary services from another energy supplier. The law requires customers wishing to choose a new supplier to receive the approval of the PUCN to meet public interest standards. In particular, departing customers must secure new energy resources that are not under contract to the Nevada Utilities, the departure must not burden the Nevada Utilities with increased costs or cause any remaining customers to pay increased costs and the departing customers must pay their portion of any deferred energy balances, all as determined by the PUCN. Also, the Utilities and the state regulatory commissions are individually evaluating how best to integrate private generation resources into their service and rate design, including considering such factors as maintaining high levels of customer safety and service reliability, minimizing adverse cost impacts and fairly allocating costs among all customers.

In Nevada, large natural gas customers using 12,000 therms per month with fuel switching capability are allowed to participate in the incentive natural gas rate tariff. Once a service agreement has been executed, a customer can compare natural gas prices under this tariff to alternative energy sources and choose its source of natural gas. In addition, natural gas customers using greater than 1,000 therms per day have the ability to secure their own natural gas supplies under the gas transportation tariff.

PacifiCorp

Rate Filings

Under Utah law, the UPSC must issue a written order within 240 days of a public utility's application for a general rate change. Absent an order, the proposed rates go into effect as filed and are not subject to refund, the UPSC may allow interim rates to take effect within 45 days of an application, subject to refund or surcharge, if an adequate prima facie showing is established in hearing that the interim rate change is justified.

The OPUC has the authority to suspend proposed new rates for a period not to exceed more than six months, with an additional three-month extension, beyond the 30-day time period when the new rates would otherwise go into effect. Absent suspension or other action from the OPUC, new rates automatically go into effect 30 days from filing by the utility. Upon suspension by the OPUC, the OPUC is authorized to allow collection of an interim rate, subject to refund, during the pendency of the OPUC's review of the rate request.

In Wyoming, the WPSC can allow interim rates to go into effect 30 days after the initial application but may require a bond to secure a refund for the amount. The WPSC may suspend the rates for final approval for a period not to exceed 10 months.

The WUTC has the authority to suspend proposed new rates, subject to hearing, for a period not to exceed 10 months beyond the 30-day time period when the new rate would otherwise go into effect.

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Under Idaho law, the IPUC can suspend a filing for an initial period not to exceed five months, and an additional extension of 60 days with a showing of good cause.

The CPUC has the authority to suspend proposed new rates, subject to hearing, for a period not to exceed 18 months. The CPUC may extend the suspension period on a case-by-case period.

Adjustment Mechanisms

In addition to recovery through base rates, PacifiCorp also achieves recovery of certain costs through various adjustment mechanisms as summarized below.
State RegulatorBase Rate Test PeriodAdjustment Mechanism
UPSC
Forecasted or historical with known and measurable changes(1)
EBA under which 100% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Wheeling revenue is also included in the mechanism. Beginning in 2021, the mechanism includes a true-up of PTCs as well.
Balancing account to provide for 100% recovery or refund of the difference between the level of REC revenues included in base rates and actual REC revenues after adjusting for a REC incentive authorized by the UPSC.
Recovery mechanism for single capital investments that in total exceed 1% of existing rate base when a general rate case has occurred within the preceding 18 months.
Effective January 1, 2021, Wildland Fire Mitigation Balancing Account to recover operating expenses and capital expenditures incurred to implement PacifiCorp's Utah Wildland Fire Protection Plan incremental to those included in base rates.
OPUCForecastedPCAM under which 90% of the difference between forecasted net variable power costs and PTCs established under the annual TAM and actual net variable power costs and PTCs is deferred and reflected in future rates. The difference between the forecasted and actual net variable power costs and PTCs must fall outside of an established asymmetrical deadband, with a negative annual power cost variance deadband of $15 million; and a positive annual power cost variance deadband of $30 million and is subject to an earnings test of +/- 1% on PacifiCorp's allowed return on equity.
Annual TAM based on forecasted net variable power costs and PTCs.
RAC to recover the revenue requirement of new renewable resources and associated transmission costs that are not reflected in general rates.
Balancing account for proceeds from the sale of RECs.
Effective January 1, 2021, Annual Wildfire Mitigation and Vegetation Management Cost Recovery Mechanism approved for three years to recover vegetation management and wildfire mitigation operations and maintenance costs and wildfire mitigation capital costs, incremental to those included in base rates. Recovery is subject to performance metrics and earnings tests. After three years, the mechanism will be assessed to determine whether continued use is warranted.
WPSC
Forecasted or historical with known and measurable changes(1)
ECAM under which 70% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Chemical costs and start-up fuel costs are also included in the mechanism.
REC and SO2 revenue adjustment mechanism to provide for recovery or refund of 100% of any difference between actual REC and SO2 revenues and the level in rates.
WUTCHistorical with known and measurable changesPCAM under which the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates after applying a $4 million deadband for positive or negative net power cost variances. For net power cost variances between $4 million and $10 million, amounts to be recovered from customers are allocated 50/50 and amounts to be credited to customers are allocated 75/25 (customers/PacifiCorp). Positive or negative net power cost variances in excess of $10 million are allocated 90/10 (customers/PacifiCorp).
Deferral mechanism of costs for up to 24 months of new base load generation resources and eligible renewable resources and related transmission that qualify under the state's emissions performance standard and are not reflected in base rates.
REC revenue tracking mechanism to provide credit of 100% of REC revenues to customers.
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Decoupling mechanism under which the difference between actual annual revenues and authorized revenues per customer is deferred and reflected in future rates, subject to an earnings test. Under the earnings test, 50% of any excess earnings over PacifiCorp's authorized return on equity is returned to customers in addition to any surcharge or surcredit related to the revenue variance. The earnings test is asymmetrical and adjustments are not made when PacifiCorp earns at or below authorized returns on equity. To trigger a rate adjustment, the deferral balance must exceed plus or minus 2.5% of the authorized revenue at the end of each deferral period by rate class. Rate adjustments must not exceed a surcharge of 5% of the actual normalized revenue by class.
IPUCHistorical with known and measurable changesECAM under which 90% of the difference between base net power costs set during a general rate case and actual net power costs is deferred and reflected in future rates. Also provides for recovery or refund of 100% of the difference between the level of REC revenues included in base rates and actual REC revenues and differences in actual PTCs compared to the amount in base rates.
CPUCForecastedPTAM for major capital additions that allows for rate adjustments outside of the context of a traditional general rate case for the revenue requirement associated with capital additions exceeding $50 million on a total-company basis. Filed as eligible capital additions are placed into service.
ECAC that allows for an annual update to actual and forecasted net power costs.
PTAM for attrition, a mechanism that allows for an annual adjustment to costs other than net power costs.
Catastrophic Events Memorandum Account for catastrophic events, allows for deferral and cost recovery of reasonable costs incurred as the result of catastrophic events, which are events for which a state or federal agency has declared a state of emergency.
Fire Risk Mitigation Memorandum Account to track costs related to wildfire mitigation activities incremental to what is in base rates and Wildfire Mitigation Plan Memorandum Account to track costs associated with the implementation of PacifiCorp's approved wildfire mitigation plan.

(1)PacifiCorp has relied on both historical test periods with known and measurable adjustments, as well as forecasted test periods.

MidAmerican Energy

Rate Filings

Under Iowa law, there are two options for temporary collection of higher rates following the filing of a request for a base rate increase. Collection can begin, subject to refund, either (1) within 10 days of filing, without IUB review, or (2) 90 days after filing, with approval by the IUB, depending upon the ratemaking principles and precedents utilized. In either case, if the IUB has not issued a final order within ten months after the filing date, the temporary rates become final and any difference between the requested rate increase and the temporary rates may then be collected subject to refund until receipt of a final order. Under Illinois law, new base rates may become effective 45 days after the filing of a request with the ICC, or earlier with ICC approval. The ICC has authority to suspend the proposed new rates, subject to hearing, for a period not to exceed approximately eleven months after filing. South Dakota law authorizes the South Dakota Public Utilities Commission to suspend new base rates for up to six months during the pendency of rate proceedings; however, a utility may implement all or a portion of the proposed new rates six months after the filing of a request for a rate increase subject to refund pending a final order in the proceeding.

Iowa law also permits rate-regulated utilities to seek ratemaking principles with the IUB prior to the construction of certain types of new generating facilities. Pursuant to this law, MidAmerican Energy has applied for and obtained IUB ratemaking principles orders for a 484-MW (MidAmerican Energy's share) coal-fueled generating facility, a 495-MW combined cycle natural gas-fueled generating facility and 6,639 MWs (nominal ratings) of wind-powered generating facilities as of December 31, 2020. These ratemaking principles established cost caps for the projects, below which such costs are deemed prudent by the IUB, and authorized a fixed rate of return on equity for the respective generating facilities over the regulatory life of the facilities in any future Iowa rate proceeding. As of December 31, 2020, the generating facilities in service totaled $8.4 billion, or 43%, of MidAmerican Energy's regulated property, plant and equipment, net and were subject to these ratemaking principles at a weighted average return on equity of 11.4% with a weighted average remaining life of 33 years.

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Ratemaking principles for several wind-powered generation projects have established mechanisms in Iowa where electric rate base may be reduced. The current revenue sharing mechanism originates from Wind XI and Wind XII ratemaking principles proceedings and reduces rate base for Iowa electric returns on equity exceeding an established benchmark. For 2018, sharing was triggered by MidAmerican Energy's actual equity return being above a threshold calculated annually in accordance with the IUB's 2016 Wind XI order. The threshold, not to exceed 11%, was the weighted average equity return of rate base with returns authorized via ratemaking principles proceedings and all other rate base. For all other rate base, the return is based on interest rates on 30-year A-rated utility bond yields plus 400 basis points, with a minimum return of 9.5%. In 2018 pursuant to this mechanism, MidAmerican Energy shared with customers 100% of the revenue in excess of the trigger. In December 2018, the IUB issued an order approving ratemaking principles related to MidAmerican Energy's Wind XII project. The ratemaking principles continued the revenue sharing mechanism for 2019 and beyond, maintaining the return on equity threshold for sharing and reducing the customer sharing percentage from 100% to 90%. A second mechanism, the retail customer benefit mechanism, reduces electric rate base for the value of higher cost retail energy displaced by covered wind-powered production and applies to the wind-powered generating facilities placed in-service in 2016 under the Wind X project and facilities constructed under the Wind XII project approved by the IUB in 2018. Rate base reductions under these mechanisms are applied to coal and other generation facilities in specified orders.

Adjustment Mechanisms

Under its current Iowa, Illinois and South Dakota electric tariffs, MidAmerican Energy is allowed to recover fluctuations in electric energy costs for its retail electric sales through fuel, or energy, cost adjustment mechanisms. The Iowa mechanism also includes PTCs associated with wind-powered generating facilities placed in-service prior to 2013, except for PTCs earned by repowered facilities. Eligibility for PTCs associated with MidAmerican Energy's earliest projects began expiring in 2014. Facilities currently earning PTCs that benefit customers through the Iowa energy adjustment clause totaled 1,000 MWs (nominal ratings) as of December 31, 2020, with the eligibility of those facilities to earn PTCs expiring by the end of 2022. Additionally, MidAmerican Energy has transmission adjustment clauses to recover certain transmission charges related to retail customers in all jurisdictions. The transmission adjustment mechanisms recover costs billed by the MISO for regional transmission service. The Illinois adjustment mechanism additionally recovers MidAmerican Energy's entire transmission revenue requirement attributable to Illinois. The adjustment mechanisms reduce the regulatory lag for the recovery of energy and transmission costs related to retail electric customers in these jurisdictions and accomplish, with limited timing differences, a pass-through of the related costs to these customers. Recoveries through these adjustment mechanisms are reflected in operating revenue, and the related costs are reflected in cost of fuel and energy, operations and maintenance expense or income tax benefit, as applicable.

Of the wind-powered generating facilities placed in-service as of December 31, 2020, 4,670 MWs (nominal ratings) have not been included in the determination of MidAmerican Energy's Iowa retail electric base rates. In accordance with the related ratemaking principles, until such time as these generation assets are reflected in base rates and ceasing thereafter, MidAmerican Energy will continue to reduce its revenue from Iowa energy adjustment clause recoveries by $12 million each calendar year.

MidAmerican Energy's cost of natural gas purchased for resale is collected for each jurisdiction through a uniform PGA, which is updated monthly to reflect changes in actual costs. Subject to prudence reviews, the PGA accomplishes a pass-through of MidAmerican Energy's cost of natural gas purchased for resale to its customers and, accordingly, has no direct effect on net income.

MidAmerican Energy's electric and natural gas energy efficiency program costs are collected through bill riders that are adjusted annually based on actual and expected costs in accordance with the energy efficiency plans filed with and approved by the respective state regulatory commission. As such, the energy efficiency program costs, which are reflected in operations and maintenance expense, and related recoveries, which are reflected in operating revenue, have no direct impact on net income.

MidAmerican Energy has income tax rider mechanisms in Iowa and Illinois that were established in response to 2017 Tax Reform, which enacted significant changes to the Internal Revenue Code, including, among other things, a reduction in the United States federal corporate income tax rate from 35% to 21%. South Dakota implemented changes to base rates in response to 2017 Tax Reform. As a result of 2017 Tax Reform, MidAmerican Energy re-measured its accumulated deferred income tax balances at the 21% rate and increased regulatory liabilities pursuant to the approved mechanisms. In December 2018, the IUB approved in final form a tax expense revision mechanism that reduces customer electric rates for the impact of the lower income tax rate on current operations, as calculated annually, and defers the amortization of excess accumulated deferred income taxes created by their re-measurement at the 21% income tax rate to a regulatory liability, the disposition of which will be determined in MidAmerican Energy's next rate case. In 2018, Iowa Senate File 2417 was signed into law, which, among other items, reduces the state of Iowa corporate tax rate from 12% to 9.8% effective in 2021, at which time, the impacts of Iowa Senate File 2417 will be included in the Iowa tax expense revision mechanism.
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NV Energy (Nevada Power and Sierra Pacific)

Rate Filings

Nevada statutes require the Nevada Utilities to file electric general rate cases at least once every three years with the PUCN. Sierra Pacific may also file natural gas general rate cases with the PUCN. The Nevada Utilities are also subject to a two-part fuel and purchased power adjustment mechanism. The Nevada Utilities make quarterly filings to reset the BTERs, based on the last 12 months of fuel and purchased power costs. The difference between actual fuel and purchased power costs and the revenue collected in the BTERs is deferred into a balancing account. The DEAA rate clears amounts deferred into the balancing account. Nevada regulations allow an electric or natural gas utility that adjusts its BTERs on a quarterly basis to request PUCN approval to make quarterly changes to its DEAA rate if the request is in the public interest. During required annual DEAA proceedings, the prudence of fuel and purchased power costs is reviewed, and if any costs are disallowed on such grounds, the disallowances will be incorporated into the next quarterly BTERs change. Also, on an annual basis, the Nevada Utilities (a) seek a determination that energy efficiency program expenditures were reasonable, (b) request that the PUCN reset base and amortization EEPR, and (c) request that the PUCN reset base and amortization EEIR.

            EEPR and EEIR

EEPR was established to allow the Nevada Utilities to recover the costs of implementing energy efficiency programs and EEIR was established to offset the negative impacts on revenue associated with the successful implementation of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared by the Nevada Utilities and approved by the PUCN in the IRP proceedings. When the Nevada Utilities' regulatory earned rate of return for a calendar year exceeds the regulatory rate of return used to set base tariff general rates, they are obligated to refund energy efficiency implementation revenue previously collected for that year.

            Net Metering

Nevada enacted Assembly Bill 405 ("AB 405") on June 15, 2017. The legislation, among other things, established net metering crediting rates for private generation customers with installed net metering systems less than 25 kilowatts. Under AB 405, private generation customers will be compensated at 95% of the rate the customer would have paid for a kilowatt-hour of electricity supplied by the Nevada Utilities for the first 80 MWs of cumulative installed capacity of all net metering systems in Nevada, 88% of the rate for the next 80 MWs, 81% of the rate for the next 80 MWs and 75% of the rate for any additional private generation capacity. As of December 31, 2020, the cumulative installed and applied-for capacity of net metering systems under AB 405 in Nevada was 300 MWs.

            Natural Disaster Protection Plan

Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law on May 22, 2019. The legislation requires the Nevada Utilities to submit a natural disaster protection plan to the PUCN. The PUCN adopted natural disaster protection plan regulations on January 29, 2020, that require the Nevada Utilities to file their natural disaster protection plan for approval on or before March 1 of every third year. The regulations also require annual updates to be filed on or before September 1 of the second and third years of the plan. The plan must include procedures, protocols and other certain information as it relates to the efforts of the Nevada Utilities to prevent or respond to a fire or other natural disaster. The expenditures incurred by the Nevada Utilities in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with the Nevada Utilities filing an application for recovery on or before March 1 of each year. The Nevada Utilities submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures on February 28, 2020.

Federal Regulation

The FERC is an independent agency with broad authority to implement provisions of the Federal Power Act, the Natural Gas Act ("NGA"), the Energy Policy Act of 2005 ("Energy Policy Act") and other federal statutes. The FERC regulates rates for wholesale sales of electricity; transmission of electricity, including pricing and regional planning for the expansion of transmission systems; electric system reliability; utility holding companies; accounting and records retention; securities issuances; construction and operation of hydroelectric facilities; and other matters. The FERC also has the enforcement authority to assess civil penalties of up to $1.3 million per day per violation of rules, regulations and orders issued under the Federal Power Act. The Utilities have implemented programs and procedures that facilitate and monitor compliance with the FERC's regulations described below. MidAmerican Energy is also subject to regulation by the NRC pursuant to the Atomic Energy Act of 1954, as amended ("Atomic Energy Act"), with respect to its ownership interest in the Quad Cities Station.
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Wholesale Electricity and Capacity

The FERC regulates the Utilities' rates charged to wholesale customers for electricityand transmission capacity and related services. Much of the Utilities' wholesale electricity sales and purchases occur under market-based pricing allowed by the FERC and are therefore subject to market volatility. The Utilities are precluded from selling at market-based rates in the PacifiCorp-East, PacifiCorp-West, Nevada Utilities, Idaho Power Company and NorthWestern Energy balancing authority areas. Wholesale electricity sales in those specific balancing authority areas are permitted at cost-based rates. PacifiCorp and the Nevada Utilities have been granted the authority to bid into the California EIM at market-based rates.

The Utilities' authority to sell electricity in wholesale electricity markets at market-based rates is subject to triennial reviews conducted by the FERC. Accordingly, the Utilities are required to submit triennial filings to the FERC that demonstrate a lack of market power over sales of wholesale electricity and electric generation capacity in their respective market areas. PacifiCorp, the Nevada Utilities and certain affiliates, representing the BHE Northwest Companies, file together for market power study purposes. The BHE Northwest Companies' most recent triennial filing was made in June 2019 and an order accepting it was issued in June 2020. MidAmerican Energy and certain affiliates file together for market power study purposes of the FERC-defined Northeast Region. The most recent triennial filing for the Northeast Region was made in June 2020 and is under review by the FERC. MidAmerican Energy and certain affiliates file together for market power study purposes of the FERC-defined Central Region. The most recent triennial filing for the Central Region was made in December 2020 and is under review by the FERC. Under the FERC's market-based rules, the Utilities must also file with the FERC a notice of change in status when there is a change in the conditions that the FERC relied upon in granting market-based rate authority.

Transmission

PacifiCorp's and the Nevada Utilities' wholesale transmission services are regulated by the FERC under cost-based regulation subject to PacifiCorp's and the Nevada Utilities' OATT. These services are offered on a non-discriminatory basis, which means that all potential customers are provided an equal opportunity to access the transmission system. PacifiCorp's and the Nevada Utilities' transmission business is managed and operated independently from its wholesale marketing business in accordance with the FERC's Standards of Conduct. PacifiCorp and the Nevada Utilities have made several required compliance filings in accordance with these rules.

In December 2011, PacifiCorp adopted a cost-based formula rate under its OATT for its transmission services. Cost-based formula rates are intended to be an effective means of recovering PacifiCorp's investments and associated costs of its transmission system without the need to file rate cases with the FERC, although the formula rate results are subject to discovery and challenges by the FERC and intervenors. A significant portion of these services are provided to PacifiCorp's energy supply management function.

MidAmerican Energy participates in the MISO as a transmission-owning member. Accordingly, the MISO is the transmission provider under its FERC-approved OATT. While the MISO is responsible for directing the operation of MidAmerican Energy's transmission system, MidAmerican Energy retains ownership of its transmission assets and, therefore, is subject to the FERC's reliability standards discussed below. MidAmerican Energy's transmission business is managed and operated independently from its wholesale marketing business in accordance with the FERC Standards of Conduct.

MidAmerican Energy constructed and owns four Multi-Value Projects ("MVPs") located in Iowa and Illinois that added approximately 250 miles of 345-kV transmission line to MidAmerican Energy's transmission system since 2012. The MISO OATT allows for broad cost allocation for MidAmerican Energy's MVPs, including similar MVPs of other MISO participants. Accordingly, a significant portion of the revenue requirement associated with MidAmerican Energy's MVP investments is shared with other MISO participants based on the MISO's cost allocation methodology, and a portion of the revenue requirement of the other participants' MVPs is allocated to MidAmerican Energy. The transmission assets and financial results of MidAmerican Energy's MVPs are excluded from the determination of its retail electric rates.

The FERC has established an extensive number of mandatory reliability standards developed by the NERC and the WECC, including planning and operations, critical infrastructure protection and regional standards. Compliance, enforcement and monitoring oversight of these standards is carried out by the FERC; the NERC; and the WECC for PacifiCorp, Nevada Power, and Sierra Pacific; and the Midwest Reliability Organization for MidAmerican Energy.


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Hydroelectric

The FERC licenses and regulates the operation of hydroelectric systems, including license compliance and dam safety programs. Most of PacifiCorp's hydroelectric generating facilities are licensed by the FERC as major systems under the Federal Power Act, and certain of these systems are licensed under the Oregon Hydroelectric Act. Under the Federal Power Act, 20 developments associated with PacifiCorp's hydroelectric generating facilities licensed with the FERC are classified as "high hazard potential," meaning it is probable in the event of a dam failure that loss of human life in the downstream population could occur. The FERC provides guidelines utilized by PacifiCorp in development of public safety programs consisting of a dam safety program and emergency action plans.

For an update regarding PacifiCorp's Klamath River hydroelectric system, refer to Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 14 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K.

Nuclear Regulatory Commission

    General

MidAmerican Energy is subject to the jurisdiction of the NRC with respect to its license and 25% ownership interest in Quad Cities Station. Exelon Generation, the operator and 75% owner of Quad Cities Station, is under contract with MidAmerican Energy to secure and keep in effect all necessary NRC licenses and authorizations.

The NRC regulates the granting of permits and licenses for the construction and operation of nuclear generating stations and regularly inspects such stations for compliance with applicable laws, regulations and license terms. Current licenses for Quad Cities Station provide for operation until December 14, 2032. The NRC review and regulatory process covers, among other things, operations, maintenance and environmental and radiological aspects of such stations. The NRC may modify, suspend or revoke licenses and impose civil penalties for failure to comply with the Atomic Energy Act, the regulations under such Act or the terms of such licenses.

Federal regulations provide that any nuclear operating facility may be required to cease operation if the NRC determines there are deficiencies in state, local or utility emergency preparedness plans relating to such facility, and the deficiencies are not corrected. Exelon Generation has advised MidAmerican Energy that an emergency preparedness plan for Quad Cities Station has been approved by the NRC. Exelon Generation has also advised MidAmerican Energy that state and local plans relating to Quad Cities Station have been approved by the Federal Emergency Management Agency.

The NRC also regulates the decommissioning of nuclear-powered generating facilities, including the planning and funding for the eventual decommissioning of the facilities. In accordance with these regulations, MidAmerican Energy submits a biennial report to the NRC providing reasonable assurance that funds will be available to pay its share of the costs of decommissioning Quad Cities Station. MidAmerican Energy has established a trust for the investment of funds collected for nuclear decommissioning of Quad Cities Station.

Under the Nuclear Waste Policy Act of 1982 ("NWPA"), the United States DOE is responsible for the selection and development of repositories for, and the permanent disposal of, spent nuclear fuel and high-level radioactive wastes. Exelon Generation, as required by the NWPA, signed a contract with the DOE under which the DOE was to receive spent nuclear fuel and high-level radioactive waste for disposal beginning not later than January 1998. The DOE did not begin receiving spent nuclear fuel on the scheduled date and remains unable to receive such fuel and waste. The costs to be incurred by the DOE for disposal activities were previously being financed by fees charged to owners and generators of the waste. In accordance with a 2013 ruling by the D.C. Circuit, the DOE, in May 2014, provided notice that, effective May 16, 2014, the spent nuclear fuel disposal fee would be zero. In 2004, Exelon Generation, reached a settlement with the DOE concerning the DOE's failure to begin accepting spent nuclear fuel in 1998. As a result, Quad Cities Station has been billing the DOE, and the DOE is obligated to reimburse the station for all station costs incurred due to the DOE's delay. Exelon Generation has constructed an interim spent fuel storage installation ("ISFSI") at Quad Cities Station consisting of two pads to store spent nuclear fuel in dry casks in order to free space in the storage pool. The first dry cask was placed in-service in 2005. As of December 31, 2020, the first pad at the ISFSI is full, and the second pad is in operation. The first and second pads at the ISFSI are expected to facilitate storage of casks to support operations at Quad Cities Station through the end of its operating licenses.

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Nuclear Insurance

MidAmerican Energy maintains financial protection against catastrophic loss associated with its interest in Quad Cities Station through a combination of insurance purchased by Exelon Generation, insurance purchased directly by MidAmerican Energy, and the mandatory industry-wide loss funding mechanism afforded under the Price-Anderson Amendments Act of 1988 ("Price-Anderson"), which was amended and extended by the Energy Policy Act. The general types of coverage maintained are: nuclear liability, property damage or loss and nuclear worker liability, as discussed below.

Exelon Generation purchases private market nuclear liability insurance for Quad Cities Station in the maximum available amount of $450 million, which includes coverage for MidAmerican Energy's ownership. In accordance with Price-Anderson, excess liability protection above that amount is provided by a mandatory industry-wide Secondary Financial Protection program under which the licensees of nuclear generating facilities could be assessed for liability incurred due to a serious nuclear incident at any commercial nuclear reactor in the United States. Currently, MidAmerican Energy's aggregate maximum potential share of an assessment for Quad Cities Station is approximately $69 million per incident, payable in installments not to exceed $10 million annually.

The insurance for nuclear property damage losses covers property damage, stabilization and decontamination of the facility, disposal of the decontaminated material and premature decommissioning arising out of a covered loss. For Quad Cities Station, Exelon Generation purchases primary property insurance protection for the combined interests in Quad Cities Station, with coverage limits for nuclear damage losses up to $1.5 billion and non-nuclear damage losses up to $500 million. MidAmerican Energy also directly purchases extra expense coverage for its share of replacement power and other extra expenses in the event of a covered accidental outage at Quad Cities Station. The property and related coverages purchased directly by MidAmerican Energy and by Exelon Generation, which includes the interests of MidAmerican Energy, are underwritten by an industry mutual insurance company and contain provisions for retrospective premium assessments to be called upon based on the industry mutual board of directors' discretion for adverse loss experience. Currently, the maximum retrospective amounts that could be assessed against MidAmerican Energy from industry mutual policies for its obligations associated with Quad Cities Station total $7 million.

The master nuclear worker liability coverage, which is purchased by Exelon Generation for Quad Cities Station, is an industry-wide guaranteed-cost policy with an aggregate limit of $450 million for the nuclear industry as a whole, which is in effect to cover tort claims of workers in nuclear-related industries.

United States Mine Safety

PacifiCorp's mining operations are regulated by the Federal Mine Safety and Health Administration, which administers federal mine safety and health laws and regulations, and state regulatory agencies. The Federal Mine Safety and Health Administration has the statutory authority to institute a civil action for relief, including a temporary or permanent injunction, restraining order or other appropriate order against a mine operator who fails to pay penalties or fines for violations of federal mine safety standards. Federal law requires PacifiCorp to have a written emergency response plan specific to each underground mine it operates, which is reviewed by the Federal Mine Safety and Health Administration every six months, and to have at least two mine rescue teams located within one hour of each mine. Information regarding PacifiCorp's mine safety violations and other legal matters disclosed in accordance with Section 1503(a) of the Dodd-Frank Reform Act is included in Exhibit 95 to this Form 10-K.

Interstate Natural Gas Pipeline Subsidiaries

The Pipeline Companies are regulated by the FERC, pursuant to the NGA and the Natural Gas Policy Act of 1978. Under this authority, the FERC regulates, among other items, (a) rates, charges, terms and conditions of service, (b) the construction and operation of interstate pipelines, storage and related facilities, including the extension, expansion or abandonment of such facilities and (c) the construction and operation of LNG import/export facilities. The Pipeline Companies hold certificates of public convenience and necessity and LNG facility authorizations issued by the FERC, which authorize them to construct, operate and maintain their pipeline and related facilities and services.


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FERC regulations and the Pipeline Companies' tariffs allow each of the Pipeline Companies to charge approved rates for the services set forth in their respective tariffs. Generally, these rates are a function of the cost of providing services to customers, including prudently incurred operations and maintenance expenses, taxes, depreciation and amortization and a reasonable return on invested capital. Tariff rates for each of the Pipeline Companies have been developed under a rate design methodology whereby substantially all fixed costs, including a return on invested capital and income taxes, are collected through reservation charges, which are paid by firm transportation and storage customers regardless of volumes shipped. Commodity charges, which are paid only with respect to volumes actually shipped, are designed to recover the remaining, primarily variable, costs. Kern River's reservation rates have historically been approved using a "levelized" cost-of-service methodology so that the rate remains constant over the levelization period. This levelized cost of service has been achieved by using a FERC-approved depreciation schedule in which depreciation increases as the cost of capital decreases on declining rate base. Each of the Pipeline Companies also hold authority to negotiate rates for their services, subject to requirements to offer cost-based rate alternatives, and to publish such negotiated rates.In addition, for services that are not subject to FERC rate jurisdiction pursuant to Section 3 of the Natural Gas Act, Cove Point charges rates that are established by contract.

The Pipeline Companies' rates are subject to change in future general rate proceedings. Rates for natural gas pipelines are changed by filings under either Section 5 or Section 4 of the Natural Gas Act. Section 5 proceedings are initiated by the FERC or the pipeline's customers for a potential reduction to rates that the FERC finds are no longer just and reasonable. In a Section 5 proceeding, the initiating party has the burden of demonstrating that the currently effective rates of the pipeline are no longer just and reasonable, and of demonstrating alternative just and reasonable rates. Any rate decrease as a result of a Section 5 proceeding is implemented prospectively upon the issuance of a final FERC order adopting the new just and reasonable rates. Section 4 rate proceedings are initiated by the natural gas pipeline, who must demonstrate that the new proposed rates are just and reasonable. The new rates as a result of a Section 4 proceeding are typically implemented six months after the Section 4 filing and are subject to refund upon issuance of a final order by the FERC.

The FERC-regulated natural gas companies may not grant undue preference to any customer. FERC regulations require that certain information be made public for market access, through standardized internet websites.These regulations also restrict each pipeline's marketing affiliates' access to certain non-public information that could affect price or availability of service.

Interstate natural gas pipelines are also subject to regulations administered by the Office of Pipeline Safety within the Pipeline and Hazardous Materials Safety Administration, an agency of the United States Department of Transportation ("DOT"). Federal pipeline safety regulations are issued pursuant to the Natural Gas Pipeline Safety Act of 1968, as amended ("NGPSA"), which establishes safety requirements in the design, construction, operation and maintenance of interstate natural gas facilities, and requires an entity that owns or operates pipeline facilities to comply with such plans. Major amendments to the NGPSA include the Pipeline Safety Improvement Act of 2002 ("2002 Act"), the Pipeline Inspection, Protection, Enforcement and Safety Act of 2006 ("2006 Act"), the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 ("2011 Act") and the Protecting Our Infrastructure Of Pipelines And Enhancing Safety Act Of 2016 ("2016 Act").

The 2002 Act established additional safety and pipeline integrity regulations for all natural gas pipelines in high-consequence areas. The 2002 Act imposed major new requirements in the areas of operator qualifications, risk analysis and integrity management. The 2002 Act mandated more frequent periodic inspection or testing of natural gas pipelines in high-consequence areas, which are locations where the potential consequences of a natural gas pipeline accident may be significant or may do considerable harm to persons or property. Pursuant to the 2002 Act, the DOT promulgated regulations that require natural gas pipeline operators to develop comprehensive integrity management programs, to identify applicable threats to natural gas pipeline segments that could impact high-consequence areas, to assess these segments and to provide ongoing mitigation and monitoring. The regulations require recurring inspections of high-consequence area segments every seven years after the initial baseline assessment.

The 2006 Act required pipeline operators to institute human factors management plans for personnel employed in pipeline control centers. DOT regulations published pursuant to the 2006 Act required development and implementation of written control room management procedures.

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The 2011 Act was a response to natural gas pipeline incidents, most notably the San Bruno natural gas pipeline explosion that occurred in September 2010 in California. The 2011 Act increased the maximum allowable civil penalties for violations, directs operator assistance for Federal authorities conducting investigations and authorized the DOT to hire additional inspection and enforcement personnel. The 2011 Act also directed the DOT to study several topics, including the definition of high-consequence areas, the use of automatic shutoff valves in high-consequence areas, expansion of integrity management requirements beyond high-consequence areas and cast iron pipe replacement. The studies are complete, and a number of notices of proposed rulemaking have been issued. The Pipeline and Hazardous Materials Safety Administration issued the Safety of Gas Transmission Pipelines: MAOP Reconfirmation, Expansion of Assessment Requirements and Other Related Amendments final rule in October 2019. The primary change is the expansion of the pipeline integrity assessment requirements to cover moderate-consequence areas and reconfirming maximum allowable operating pressures. Pipeline operators must develop procedures to address assessment requirements and define and map locations by mid-2021 and complete 50% of the required integrity testing by 2028 and the remaining testing by 2034. The BHE Pipeline Group is assessing the impact of the rule. This is the first of three parts of the anticipated new rules. Additional final rules are expected in 2021.

The 2016 Act required the Pipeline and Hazardous Materials Safety Administration to set federal minimum safety standards for underground natural gas storage facilities and authorized emergency order authority. In February 2020, the Pipeline and Hazardous Materials Safety Administration issued a final rule regarding underground natural gas storage facilities that incorporates by reference the American Petroleum Institute's Recommended Practice 1171, "Functional Integrity of Natural Gas Storage in Depleted Hydrocarbon Reservoirs and Aquifer Reservoirs", clarifies certain aspects of the mandatory nature of the standard and defines regulatory completion dates for underground storage facility risk assessments. EGTS has 17 underground natural gas storage fields that fall under this regulation and does not expect the impact of complying with the final rule to be significant. Northern Natural Gas has three underground natural gas storage fields that fall under this regulation and is complying with the final rule. Kern River, Carolina Gas and Cove Point do not have underground natural gas storage facilities.

The DOT and related state agencies routinely audit and inspect the pipeline facilities for compliance with their regulations. The Pipeline Companies conduct internal audits of their facilities every four years with more frequent reviews of those deemed higher risk. The Pipeline Companies also conduct preliminary audits in advance of agency audits. Compliance issues that arise during these audits or during the normal course of business are addressed on a timely basis. The Pipeline Companies believe their pipeline systems comply in all material respects with the NGPSA and with DOT regulations issued pursuant to the NGPSA.

Northern Powergrid Distribution Companies

The Northern Powergrid Distribution Companies, as holders of electricity distribution licenses, are subject to regulation by GEMA. GEMA regulates distribution network operators ("DNOs") within the terms of the Electricity Act 1989 and the terms of DNO licenses, which are revocable with 25 years notice. Under the Electricity Act 1989, GEMA has a duty to ensure that DNOs can finance their regulated activities and DNOs have a duty to maintain an investment grade credit rating. GEMA discharges certain of its duties through its staff within Ofgem. Each of fourteen licensed DNOs distributes electricity from the national grid transmission system and distribution-connected generators to end users within its respective distribution services area.

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DNOs are subject to price controls, enforced by Ofgem, that limit the revenue that may be recovered and retained from their electricity distribution activities. The regulatory regime that has been applied to electricity distributors in Great Britain encourages companies to look for efficiency gains in order to improve profits. The distribution price control formula also adjusts the revenue received by DNOs to reflect a number of factors, including, but not limited to, the rate of inflation (as measured by the United Kingdom's Retail Prices Index) and the quality of service delivered by the licensee's distribution system. The current price control, Electricity Distribution 1 ("ED1"), has been set for a period of eight years, starting April 1, 2015, although the formula has been, and may be, reviewed by the regulator following public consultation. The procedure and methodology adopted at a price control review are at the reasonable discretion of Ofgem. Ofgem's judgment of the future allowed revenue of licensees is likely to take into account, among other things:
the actual operating and capital costs of each of the licensees;
the operating and capital costs that each of the licensees would incur if it were as efficient as, in Ofgem's judgment, the more efficient licensees;
the actual value of certain costs which are judged to be beyond the control of the licensees;
the taxes that each licensee is expected to pay;
the regulatory value ascribed to the expenditures that have been incurred in the past and the efficient expenditures that are to be incurred in the forthcoming regulatory period;
the rate of return to be allowed on expenditures that make up the regulatory asset value;
the financial ratios of each of the licensees and the license requirement for each licensee to maintain investment grade status;
an allowance in respect of the repair of the pension deficits in the defined benefit pension schemes sponsored by each of the licensees; and
any under- or over-recoveries of revenues, relative to allowed revenues, in the previous price control period.

A number of incentive schemes also operate within the current price control period to encourage DNOs to provide an appropriate quality of service to end users. This includes specified payments to be made for failures to meet prescribed standards of service. The aggregate of these guaranteed standards payments is uncapped, but may be excused in certain prescribed circumstances that are generally beyond the control of the DNOs.

A new price control can be implemented by GEMA without the consent of the DNOs, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's CMA, as can certain other parties. Any appeals must be notified within 20 working days of the license modification by GEMA. If the CMA determines that the appellant has relevant standing, then the statute requires that the CMA complete its process within six months, or in some exceptional circumstances seven months. The Northern Powergrid Distribution Companies appealed Ofgem's proposals for the resetting of the formula that commenced April 1, 2015, as did one other party, and the CMA subsequently revised GEMA's decision.

The current eight-year electricity distribution price control period runs from April 1, 2015 through March 31, 2023. The current price control was the first to be set for electricity distribution in Great Britain since Ofgem completed its review of network regulation (known as the RPI-X @ 20 project). The key changes to the price control calculations, compared to those used in previous price controls are that:
the period over which new regulatory assets are depreciated is being gradually lengthened, from 20 years to 45 years, with the change being phased over eight years;
allowed revenues will be adjusted during the price control period, rather than at the next price control review, to partially reflect cost variances relative to cost allowances;
the allowed cost of debt will be updated within the price control period by reference to a long-run trailing average based on external benchmarks of utility debt costs;
allowed revenues will be adjusted in relation to some new service standard incentives, principally relating to speed and service standards for new connections to the network; and
there was scope for a mid-period review and adjustment to revenues in the latter half of the period for any changes in the outputs required of licensees for certain specified reasons, although GEMA made no adjustments under this provision.

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Under the current price control, as revised by the CMA, and excluding the effects of incentive schemes and any deferred revenues from the prior price control, the opening base allowed revenue of Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc remains constant in all subsequent years within the price control period (ED1) through 2022-23, before the addition of inflation. Nominal opening base allowed revenues will increase in line with inflation. Adjustments are made annually to recognize the effect of factors such as changes in the allowed cost of debt, performance on incentive schemes and catch up of prior year under- or over- recoveries.

Ofgem also monitors DNO compliance with license conditions and enforces the remedies resulting from any breach of condition. License conditions include the prices and terms of service, financial strength of the DNO, the provision of information to Ofgem and the public, as well as maintaining transparency, non-discrimination and avoidance of cross-subsidy in the provision of such services. Ofgem also monitors and enforces certain duties of a DNO set out in the Electricity Act 1989, including the duty to develop and maintain an efficient, coordinated and economical system of electricity distribution. Under changes to the Electricity Act 1989 introduced by the Utilities Act 2000, GEMA is able to impose financial penalties on DNOs that contravene any of their license duties or certain of their duties under the Electricity Act 1989, as amended, or that are failing to achieve a satisfactory performance in relation to the individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the licensee's revenue.

AltaLink

AltaLink is regulated by the AUC, pursuant to the Electric Utilities Act (Alberta), the Public Utilities Act (Alberta), the Alberta Utilities Commission Act (Alberta) and the Hydro and Electric Energy Act (Alberta). The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems. The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of AltaLink's activities, including its tariffs, rates, construction, operations and financing.

The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements, capital expenditure prudency and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable, and approval of the transmission tariff rates of regulated transmission providers paid by the AESO, which is the independent transmission system operator in Alberta, Canada that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulation and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.

AltaLink's tariffs are regulated by the AUC under the provisions of the Electric Utilities Act (Alberta) in respect of rates and terms and conditions of service. The Electric Utilities Act (Alberta) and related regulations require the AUC to consider that it is in the public interest to provide consumers the benefit of unconstrained transmission access to competitive generation and the wholesale electricity market. In regulating transmission tariffs, the AUC must facilitate sufficient investment to ensure the timely upgrade, enhancement or expansion of transmission facilities, and foster a stable investment climate and a continued stream of capital investment for the transmission system.

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Under the Electric Utilities Act (Alberta), AltaLink prepares and files applications with the AUC for approval of tariffs to be paid by the AESO for the use of its transmission facilities, and the terms and conditions governing the use of those facilities. The AUC reviews and approves such tariff applications based on a cost-of-service regulatory model under a forward test year basis. Under this model, the AUC provides AltaLink with a reasonable opportunity to (i) earn a fair return on equity; and (ii) recover its forecast costs, including operating expenses, depreciation, borrowing costs and taxes (including deemed income taxes) associated with its regulated transmission business. The AUC must approve tariffs that are just, reasonable and not unduly preferential, arbitrary or unjustly discriminatory. AltaLink's transmission tariffs are not dependent on the price or volume of electricity transported through its transmission system.

The AESO is an independent system operator in Alberta, Canada that oversees the Alberta Interconnected Electric System ("AIES") and wholesale electricity market. The AESO is responsible for directing the safe, reliable and economic operation of the AIES, including long-term transmission system planning. AltaLink and the other transmission facility owners receive substantially all of their transmission tariff revenues from the AESO. The AESO, in turn, charges wholesale tariffs, approved by the AUC, in a manner that promotes fair and open access to the AIES and facilitates a competitive market for the purchase and sale of electricity. The AESO monitors compliance with approved reliability standards, which are enforced by the Market Surveillance Administrator, which may impose penalties on transmission facility owners for non-compliance with the approved reliability standards.

The AESO determines the need and plans for the expansion and enhancement of the transmission system in Alberta in accordance with applicable law and reliability standards. The AESO's responsibilities include long-term transmission planning and management, including assessing the current and future transmission system capacity needs of market participants. When the AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application to the AUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an application to the AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the geographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that certain transmission projects may be subject to a competitive process open to qualified bidders.

Independent Power Projects

The Yuma, Cordova, Saranac, Power Resources, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Jumbo Road, Marshall, Grande Prairie, Walnut Ridge, Pinyon Pines, Santa Rita, Alamo 6 and Pearl independent power projects are Exempt Wholesale Generators ("EWG") under the Energy Policy Act, while the Community Solar Gardens, Imperial Valley and Wailuku independent power projects are currently certified as Qualifying Facilities ("QF") under the Public Utility Regulatory Policies Act of 1978. Both EWGs and QFs are generally exempt from compliance with extensive federal and state regulations that control the financial structure of an electric generating plant and the prices and terms at which electricity may be sold by the facilities.

The Yuma, Cordova, Saranac, Imperial Valley, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Marshall, Grande Prairie, Walnut Ridge and Pinyon Pines independent power projects have obtained authority from the FERC to sell their power using market-based rates. This authority to sell electricity in wholesale electricity markets at market-based rates is subject to triennial reviews conducted by the FERC. Accordingly, the respective independent power projects are required to submit triennial filings to the FERC that demonstrate a lack of market power over sales of wholesale electricity and electric generation capacity in their respective market areas. The Pinyon Pines, Solar Star, Topaz and Yuma independent power projects and power marketer CalEnergy, LLC file together for market power study purposes of the FERC-defined Southwest Region. The most recent triennial filing for the Southwest Region was made in June 2019 and an order accepting it was issued in March 2020. The Cordova and Saranac independent power projects and power marketer CalEnergy, LLC file together with MidAmerican Energy and certain affiliates for market power study purposes of the FERC-defined Northeast Region. The most recent triennial filing for the Northeast Region was made in June 2020 and is awaiting FERC action. The Bishop Hill II and Walnut Ridge independent power projects and power marketer CalEnergy, LLC file together with MidAmerican Energy and certain affiliates for market power study purposes of the FERC-defined Central Region. The most recent triennial filing for the Central Region was made in December 2020 and is awaiting FERC action. The Marshall and Grande Prairie independent power projects and power marketer CalEnergy, LLC file together for market power study purposes in the FERC-defined Southwest Power Pool Region. The most recent triennial filing for the Southwest Power Pool Region was made in December 2018 and an order accepting it was issued July 2019.


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The entire output of Jumbo Road, Santa Rita, Alamo 6, Pearl and Power Resources is within the Electric Reliability Council of Texas ("ERCOT") and market-based authority is not required for such sales solely within ERCOT as the ERCOT market is not a FERC-jurisdictional market. Similarly, Wailuku sells its output solely to the Hawaii Electric Light Company within the Hawaii electric grid, which is not a FERC-jurisdictional market and therefore, Wailuku does not require market-based rate authority.

EWGs are permitted to sell capacity and electricity only in the wholesale markets, not to end users. Additionally, utilities are required to purchase electricity produced by QFs at a price that does not exceed the purchasing utility's "avoided cost" and to sell back-up power to the QFs on a non-discriminatory basis, unless they have successfully petitioned the FERC for an exemption from this purchase requirement. Avoided cost is defined generally as the price at which the utility could purchase or produce the same amount of power from sources other than the QF on a long-term basis. The Energy Policy Act eliminated the purchase requirement for utilities with respect to new contracts under certain conditions. New QF contracts are also subject to FERC rate filing requirements, unlike QF contracts entered into prior to the Energy Policy Act. FERC regulations also permit QFs and utilities to negotiate agreements for utility purchases of power at rates other than the utilities' avoided cost.

The Philippine Congress has passed the Electric Power Industry Reform Act of 2001 ("EPIRA"), which is aimed at restructuring the Philippine power industry, privatizing the National Power Corporation ("NPC") and introducing a competitive electricity market, among other initiatives. Under the EPIRA, Power Sector Assets and Liabilities Management Corporation ("PSALM") is tasked, among others, to dispose of and privatize the assets of NPC. PSALM recently issued statements that public bidding of the administration and management of the contracted energy of the Casecnan Project's energy conversion and power purchase agreement to interested parties will be made in 2021. It is still not known what impact, if any, the implementation of this change in independent power producer administrator may have on the Casecnan Project's future operations.

Residential Real Estate Brokerage Company

HomeServices and its operating subsidiaries are regulated by the United States Consumer Financial Protection Bureau which enforces the Truth In Lending Act ("TILA"), the Equal Credit Opportunity Act ("ECOA") and the Real Estate Settlement Procedures Act ("RESPA"); by the United States Federal Trade Commission with respect to certain franchising activities; by the United States Department of Housing and Urban Development, which enforces the Fair Housing Act ("FHA"); and by state agencies where its subsidiaries operate. TILA and ECOA regulate lending practices. FHA prohibits housing-related discrimination on the basis of race, color, national origin, religion, sex, familial status, and disability. RESPA regulates real estate settlement services including real estate closing practices, lender servicing and escrow account practices and business relationships among settlement service providers and third parties to the transaction.

REGULATORY MATTERS

In addition to the discussion contained herein regarding regulatory matters, refer to "General Regulation" in Item 1 of this Form 10-K for further information regarding the general regulatory framework.

PacifiCorp

Multi-State Process

In November 2019, PacifiCorp completed negotiations with the Multi-State Process Workgroup, a working group of stakeholders consisting of utility regulatory agencies, customers, and certain others potentially affected by inter-jurisdictional allocation procedures, resulting in a new cost allocation agreement, the 2020 Protocol. The agreement establishes a common allocation method to be used in Utah, Oregon, Wyoming, Idaho and California through 2023 and a separate method for Washington during the same time period that is based on a system approach for cost allocations and provides a path forward for Washington to achieve compliance with Washington's Clean Energy Transformation Act. The agreement establishes a process for the 2020 Protocol signatories to resolve remaining outstanding cost-allocations to be implemented in a new, permanent and long-term allocation method at the end of the four years. In December 2019, PacifiCorp submitted the 2020 Protocol to the UPSC, the OPUC, the WPSC and the IPUC for approval. WUTC approval of the agreement was sought in the general rate case filing also submitted in December 2019. In 2020, PacifiCorp received approval of the 2020 Protocol from the UPSC, the OPUC, the WPSC, the IPUC and the WUTC. Approval from the CPUC will be requested in a future general rate case.


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Depreciation Rate Study

In September 2018, PacifiCorp filed applications for depreciation rate changes with the UPSC, the OPUC, the WPSC, the WUTC and the IPUC based on PacifiCorp's 2018 depreciation rate study, requesting the rates become effective January 1, 2021. Based on the proposed depreciation rates, annual depreciation expense would have increased approximately $300 million. Updates since September 2018 include the filing of PacifiCorp's 2020 decommissioning studies in which a third‑party consultant was engaged to estimate decommissioning costs associated with coal-fueled generating facilities and removal of Cholla Unit 4. Depreciation rates based on the outcomes described below were effective January 1, 2021, resulting in an estimated increase in depreciation expense of $176 million in 2021, based on historical balances.

In March 2020, PacifiCorp filed a partial settlement stipulation with the UPSC to which all but one intervening party agreed. The partial settlement adopts certain aspects of the 2018 depreciation rate study as filed for coal-fueled generating facilities and established a secondary phase to the proceeding to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities and equipment replaced as a result of PacifiCorp's wind repowering projects. In April 2020, the UPSC approved the stipulation as filed. In December 2020, the UPSC issued an order regarding the secondary phase which approved PacifiCorp's proposed accounting treatment related to the retired wind assets and supports recovery of incremental decommissioning costs reflected in the third-party study over the remaining depreciable lives of the coal-fueled generating facilities as proposed in the general rate case.

In August 2020, PacifiCorp filed an all‑party stipulation with the OPUC regarding the depreciation study with depreciation rates for coal-fueled generating facilities and associated incremental decommissioning costs reflected in the third-party study to be addressed separately in the general rate case proceeding. In December 2020, the OPUC approved the stipulation effective January 1, 2021. The OPUC's December 2020 general rate case order accepted PacifiCorp's proposed depreciable lives for the coal-fueled generating facilities but deferred a decision on rate treatment of the incremental decommissioning costs.

In April 2020, PacifiCorp filed a stipulation with the WPSC resolving all issues addressed in PacifiCorp's depreciation rate study application with ratemaking treatment of certain matters to be addressed in PacifiCorp's general rate case, including depreciation for coal-fueled generating facilities and associated incremental decommissioning costs reflected in decommissioning studies and certain matters related to the repowering of PacifiCorp's wind-powered generating facilities. The stipulation was approved by the WPSC during a hearing in August 2020 and a subsequent written order in December 2020. The general rate case hearing was rescheduled for February 2021. As a result of the hearing date change, PacifiCorp filed an application in October 2020 with the WPSC requesting authorization to defer costs associated with impacts of the depreciation study. A hearing for this deferral application is scheduled to occur in July 2021.

In July 2020, PacifiCorp filed a full settlement stipulation with the WUTC resolving all issues in the proceeding. The WUTC approved the stipulation in December 2020, excluding aspects related to certain coal-fueled generating facilities that were separately addressed in the general rate case. The general rate case settlement authorizes accelerated depreciation of certain coal-fueled generating facilities, as well as recovery of incremental decommissioning costs reflected in the third-party study over a ten-year period.

In June 2020, PacifiCorp filed a partial settlement stipulation with the IPUC to which all but one intervening party agreed. The partial settlement adopts certain aspects of the 2018 depreciation rate study as filed for coal-fueled generating facilities and proposes a secondary phase to the proceeding be established in order to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities. In August 2020, the IPUC approved the stipulation and authorized a secondary phase to the proceeding to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities.

As a result of delaying the general rate case filing in Idaho for 2021 for an anticipated effective date of January 1, 2022, PacifiCorp reached a separate agreement with parties to defer the incremental depreciation expense from the 2018 depreciation study for one year, during 2021. In October 2020, a settlement stipulation was filed with the IPUC related to the secondary phase of the depreciation study to defer the incremental decommissioning expense from the 2020 decommissioning studies for one year, during 2021, consistent with the stipulated treatment of the incremental depreciation expense from the 2018 depreciation study, as a result of delaying the general rate case filing. The IPUC approved the stipulation as filed in December 2020.


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Retirement Plan Settlement Charge

During 2018, the PacifiCorp Retirement Plan incurred a settlement charge as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018. In December 2018, PacifiCorp submitted filings with the UPSC, the OPUC, the WPSC and the WUTC seeking approval to defer the settlement charge. Also in December 2018, an advice letter was filed with the CPUC requesting a memorandum account to track the costs associated with pension and postretirement settlements and curtailments. In October 2019, the request for a memorandum account was re-filed as an application with the CPUC. In 2019, the WUTC approved the requested deferral, while the UPSC and the WPSC denied the request. In January 2020, the OPUC issued an order denying PacifiCorp's request. In April 2020, the CPUC approved the request to establish a memorandum account effective December 31, 2018.

In its December 2020 generate rate case order, the UPSC ordered PacifiCorp to initiate a proceeding by March 2021 to establish a balancing account for pension settlement losses. While the OPUC did not authorize specific treatment for pension settlement losses in its December 2020 general rate case order, it did indicate that it is receptive to PacifiCorp filing a deferral request, should a pension settlement loss be triggered in the 2021 test period for the general rate case proceeding.

COVID-19

In March and April 2020, PacifiCorp filed applications requesting authorization to defer costs associated with COVID‑19 with the UPSC, the OPUC, the WPSC, the WUTC and the IPUC. In April 2020, as ordered by the CPUC, PacifiCorp filed to establish the COVID‑19 Pandemic Protections Memorandum Account. The memorandum account was approved in September 2020, retroactive to March 4, 2020. In April 2020, the WPSC approved PacifiCorp's application to defer costs associated with COVID‑19, subject to a public notice period, and required associated benefits arising from COVID‑19 to be offset against the deferred costs. During the public notice period, one party to the proceeding filed a petition for a rehearing of the matter. The WPSC scheduled a hearing for this matter in April 2021. In July, September and October 2020, the IPUC, the UPSC and the OPUC, respectively, approved PacifiCorp's applications to defer costs associated with COVID‑19, requiring associated benefits arising from COVID‑19 to be offset against the deferred costs. In November 2020, PacifiCorp filed a revised petition consistent with the requirements set forth in the WUTC's adopted term sheet in its generic COVID-19 proceeding. In December 2020, the WUTC approved PacifiCorp's revised petition. In February 2021, PacifiCorp filed a motion to withdraw the application from the WPSC, after reaching an agreement with parties to the proceeding.

Utah

In March 2019, PacifiCorp filed its annual EBA application with the UPSC requesting recovery of $24 million, or 1.1%, of deferred net power costs from customers for the period January 1, 2018 through December 31, 2018, reflecting the difference between base and actual net power costs in the 2018 deferral period. The rate change was approved by the UPSC effective May 1, 2019 on an interim basis. Following a decision from the Utah Supreme Court in June 2019 that found the UPSC did not have authority to approve interim rates in conjunction with the EBA, the UPSC directed PacifiCorp to terminate the interim rate change pending final approval in the proceeding. The hearing on final approval was held in February 2020, and the UPSC issued an order approving full recovery of the 2018 deferred costs beginning April 1, 2020.

In May 2019, Utah House Bill 411 went into effect. The legislation, among other things, authorizes the UPSC to approve a renewable energy capacityprogram for communities seeking 100% renewable electricity. Participating cities were required to adopt a resolution with a goal to be on 100% renewable electricity by 2030 before December 31, 2019. Twenty-four communities in Nevada. Utah, including Salt Lake City, passed the resolution before December 31, 2019. Customers within a participating community may opt out of the program and maintain existing rates. Rates approved for the program may not result in any shift of costs or benefits to nonparticipating customers. The program details, including costs, are being developed with the communities for a future filing with the UPSC.

In March 2020, PacifiCorp filed its annual EBA application with the UPSC requesting recovery of $37 million, or 1.0%, of deferred power costs from customers for the period January 1, 2019 through December 2016,31, 2019, reflecting the orderdifference between base and actual net power costs in the 2019 deferral period. A hearing was approved.held in February 2021 for rates effective March 1, 2021.


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In March 2020, Utah's governor signed Utah House Bill 66, Wildland Fire Planning and Cost Recovery Amendments, which requires PacifiCorp to prepare a wildfire protection plan to be approved by the UPSC. All investments, including the cost of capital, made to implement an approved plan are recoverable in rates. The bill also provides a potential liability safe harbor if PacifiCorp is in compliance with its approved wildfire mitigation plan. In addition, the orderlegislation clarifies the standard for real property losses and eliminates the current standard of treble damages awarded for tree losses. The first wildland fire protection plan was filed with the UPSC in June 2020 and was approved by the UPSC in October 2020. As part of the 2020 general rate case, the UPSC approved a Wildland Fire Mitigation Balancing Account to track and defer costs associated with the implementation of the wildland fire protection plan that are not recovered through base rates.

In March 2020, Utah's governor signed Utah House Bill 396, Electric Vehicle Charging Infrastructure Amendments, which directs the UPSC to enable PacifiCorp to recover in rates up to $50 million of electric vehicle infrastructure. The legislation also prohibits a third‑party from generating electricity onsite to directly resell to customers through electric vehicle charging infrastructure.

In May 2020, PacifiCorp filed a general rate case with the UPSC requesting an increase in base rates of $96 million, or 4.8%, which PacifiCorp proposed to be implemented over a three-year period with 2.6% effective January 1, 2021, 1.1% effective January 1, 2022 and 1.1% effective January 1, 2023 reflecting the refunding of a portion of 2017 Tax Reform benefits in 2021 and 2022. The proposed increase reflected recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs associated with coal-fueled generating facilities, a wildland fire mitigation cost tracking mechanism to implement Utah House Bill 66, and rate design modernization proposals. The application also requested authorization to recover costs associated with the early retirement of Reid GardnerCholla Unit 4. The proposed increase reflected several rate mitigation measures that included use of the balance in the Utah Sustainable Transportation and Energy Plan ("STEP") regulatory accounts to accelerate depreciation of the undepreciated plant balance of certain coal-fueled generation units, including Cholla Unit 4, and the use of a portion of the excess deferred income taxes associated with 2017 Tax Reform to accelerate recognition of certain regulatory assets and further depreciate the Dave Johnston plant balance. In October 2020, PacifiCorp filed rebuttal testimony, modifying its request to an increase in base rates of $72 million, or 3.6%, primarily due to a reduction to the requested return on equity. In December 2020, the UPSC issued an order approving an increase in base rates of $31 million, or 1.6%, effective January 1, 2021 reflecting a reduction in PacifiCorp's requested return on equity and before considering refunds of remaining 2017 Tax Reform benefits. The UPSC approved PacifiCorp's proposed rate mitigation strategy to refund remaining 2017 Tax Reform benefits over two years, resulting in an overall net decrease of $15 million, or 0.7%, effective January 1, 2021 followed by a 1.1% increase on January 1, 2022 and another 1.1% increase on January 1, 2023. The order accepted PacifiCorp's proposal to use Utah STEP regulatory balances and excess deferred income taxes associated with 2017 Tax Reform to accelerate depreciation of Cholla Unit 4 and portions of other coal-fueled generating plant balances, as well as to accelerate recognition of certain regulatory asset balances. The order also authorized PacifiCorp to establish a deferral account for costs associated with the early retirement of Cholla Unit 4 and a Wildland Fire Mitigation Balancing Account as described under "Adjustment Mechanisms" in Item 1 of this Form 10-K. In addition, the UPSC ordered PacifiCorp to initiate a proceeding by March 2021 to establish a balancing account for pension settlement losses.

Oregon

In December 2018, PacifiCorp filed a 2019 RAC application requesting recovery of costs associated with repowering of approximately 900 MWs of company-owned and installed wind facilities expected to be completed in 2019. The associated net power cost and PTC benefits were previously included in the 2019 TAM. An all-party settlement was approved by the OPUC in September 2019, providing for a total rate increase of $24 million, or 1.8%, subject to final cost updates. The first quarterrate increase of 2017. These transactions are$9 million, or 0.7%, was effective October 1, 2019 for four repowered facilities, the second rate increase of $1 million, or 0.1%, was effective December 1, 2019 for one repowered facility and the third rate increase of $5 million, or 0.4%, was effective January 1, 2020 for two repowered facilities. A final rate increase of $5 million, or 0.4%, was effective April 1, 2020 for the two remaining repowered facilities that were placed in service by the end of March 2020. As part of the settlement, parties agreed that depreciation of the Oregon‑allocated net book value of certain undepreciated equipment replaced as a result of the applicable repowering projects would be accelerated and offset with excess deferred income taxes resulting from 2017 Tax Reform. In 2020, accelerated depreciation of $40 million and offsetting amortization of excess deferred income taxes was recognized associated with the two remaining repowered facilities included in the 2019 RAC. In October 2020, PacifiCorp filed its annual update for plants placed into service in 2019 requesting an overall rate increase of $2 million, or 0.2%, effective November 1, 2020. The rate was in effect through December 31, 2020 when new rates from the general rate case reset the RAC rates to zero.

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In October 2019, the OPUC approved the all-party settlement in the 2020 TAM, effective January 1, 2020. In December 2020, the Cedar Springs II wind facility was placed in service. In compliance with the terms of the settlement adopted by the OPUC, in December 2020, PacifiCorp filed to include the net power costs and PTCs in rates which resulted in a rate decrease of approximately $1 million, or 0.1%, effective December 11, 2020. In December 2020, PacifiCorp also filed an application with the OPUC requesting authorization to defer the revenue requirement associated with the Cedar Springs II wind resource and associated transmission through December 31, 2020, for later inclusion in rates.

In November 2019, PacifiCorp filed a 2020 RAC application requesting an annual increase in rates of $1 million, or 0.1%, associated with repowering the Glenrock III wind facility effective April 1, 2020 and an annual increase in rates of $3 million, or 0.3%, associated with repowering the Dunlap wind facility effective October 15, 2020. As part of its application, PacifiCorp proposed to offset the Oregon-allocated net book value of the replaced wind equipment in this filing with PacifiCorp's OATT revenue related deferral from 2017 through 2019. An all-party settlement was filed in January 2020 supporting the filed request and was approved by the OPUC in March 2020. Based on a final cost update for the Glenrock III wind facility, and including the net power cost and PTC benefits, a 0.02% rate decrease became effective April 1, 2020. In September 2020, PacifiCorp filed for a rate change after the repowered Dunlap wind facility was placed in service. Based on the final cost update for the Dunlap wind facility, and including the net power cost and PTC benefits, an additional rate increase of $2 million, or 0.1%, became effective September 18, 2020. As a result of the settlement, accelerated depreciation of $34 million and offsetting amortization of the OATT deferral was recognized during 2020 associated with undepreciated equipment replaced as a result of the repowering of the Glenrock III and Dunlap wind facilities.

In November 2019, PacifiCorp requested authorization to establish an automatic adjustment clause and rate schedule for the costs and revenues related to Nevada Power'sthe Oregon Corporate Activity Tax ("OCAT") that applies to tax years beginning on or after January 1, 2020. Concurrent with this filing, PacifiCorp also requested authorization to defer the OCAT expense. In January 2020, the OPUC authorized the automatic adjustment clause, rate schedule and application for deferral. PacifiCorp began recovering the estimated OCAT expense effective February 1, 2020. The recovery adjustment for 2020 is 0.41% and the rate is being applied as a percentage surcharge on customers' bills.

In February 2020, PacifiCorp filed a general rate case in Oregon requesting a net rate increase of $71 million, or 5.4%, effective January 1, 2021. The request included a separate tariff rider to recover costs associated with the early retirement of Cholla Unit 4 for an increase of $17 million annually from January 2021 through April 2025 and an annual credit to customers of $25 million for amortization of remaining deferred income tax benefits associated with 2017 Tax Reform over a three-year period beginning January 2021. The request for the increase in base rates reflected recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs and other closure costs associated with coal-fueled facilities and rate design modernization proposals. Net power costs are addressed separately in the Oregon TAM, discussed below. In June 2020, PacifiCorp filed reply testimony requesting a revised net rate increase of $67 million, or 5.0%, effective on January 1, 2021. The revised net rate increase reflected a proposal to offset the costs associated with the early retirement of Cholla Unit 4 with a portion of the deferred income tax benefits associated with 2017 Tax Reform rather than recovering these costs through a separate tariff as proposed in the initial filing. The revised net rate increase also included PacifiCorp's proposal to provide an annual credit to customers of $6 million for amortization of the remaining deferred income tax benefits associated with 2017 Tax Reform over a two-year period beginning January 2021. In August 2020, PacifiCorp filed its surrebuttal testimony requesting a revised net rate increase of $41 million, or 3.1%, effective January 1, 2021. This included a decrease in the requested return on equity, an update to depreciation rates consistent with the settled depreciation study and the proposed annual credit to customers of the remaining deferred income tax benefits associated with 2017 Tax Reform that was modified to $7 million. PacifiCorp also filed a partial stipulation that would settle all rate design and rate spread issues in the general rate case. In PacifiCorp's closing brief filed in October 2020, PacifiCorp modified the requested net rate increase to $40 million, or 3.0%, to accept the OPUC staff's adjustment correcting the ongoing advanced meter infrastructure operating costs reflected in the case. In December 2020, the OPUC approved a net rate decrease of approximately $24 million, or 1.8%, effective January 1, 2021, accepting PacifiCorp's proposed annual credit to customers of the remaining 2017 Tax Reform benefits over a two-year period. The new rates approved by the OPUC reflect a modified capital structure for ratemaking purposes and a lower return on equity than proposed by PacifiCorp. The new rates also exclude approximately $27 million in incremental decommissioning costs and other closure costs associated with coal-fueled generating facilities that will be addressed through a separate process in 2021. The order also authorizes an Annual Wildfire Mitigation and Vegetation Management Cost Recovery Mechanism for three years as described under "Adjustment Mechanisms" in Item 1 of this Form 10-K. PacifiCorp's compliance filing to reset base rates effective January 1, 2021 in response to the OPUC's order reflected a rate decrease of approximately $67 million, or 5.1%, due to the exclusion of the impacts of repowered wind facilities, new wind facilities and certain other new investments that had not been placed in service at the time of the filing. Additional compliance filings will be made to include these investments in rates concurrent when they are placed in service. In January 2021, the OPUC approved the second compliance filing to add the remainder of the Ekola Flats wind facility to rates, resulting in a rate increase of approximately $7 million, or 0.5%, effective January 12, 2021.
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In February 2020, PacifiCorp submitted its annual TAM filing in Oregon requesting a decrease of $49 million, or 3.7%, effective January 1, 2021, based on forecast net power costs and loads for the calendar year 2021. The filing includes the customer benefits of new and repowered wind resources, including an increase in PTCs. In June 2020, PacifiCorp filed reply testimony in its annual TAM with updated forecast net power costs resulting in a rate decrease of $47 million, or 3.6%, effective January 1, 2021. In August 2020, PacifiCorp filed a stipulation with the OPUC settling all issues in the proceeding. In October 2020, the OPUC approved the stipulation. In November 2020, the final cost update was filed resulting in an annual rate decrease of $41 million, or 3.1%, effective January 1, 2021.

Wyoming

In July 2019, Wyoming Senate Enrolled Act No. 74 ("SEA 74") went into effect. The legislation, among other things, requires electric utilities to make a good faith effort to sell a coal-fueled generation facility in Wyoming before it can receive recovery in rates for capital costs associated with new generation facilities built, in whole or in part, to replace the retiring coal-fueled generation facility. The electric utility is obligated to purchase the electricity from the facility through a power purchase agreement at a price that is no greater than the utility's avoided cost as determined by the WPSC. Costs associated with an approved power purchase agreement are expected to be recoverable in rates from Wyoming customers. In March 2020, the Wyoming governor signed Senate Enrolled Act No. 23, which allows a 1 MW or greater customer to purchase electricity from a coal-fueled generation facility purchased from an electric utility under SEA 74. The WPSC approved new administrative rules to implement the legislation in November 2020, which are expected to go into effect in early 2021. The overall impacts of the legislation and the new administrative rules cannot be determined at this time.

In March 2020, PacifiCorp filed a general rate case with the WPSC requesting an increase in base rates of $7 million, or 1.1%, effective January 1, 2021. The increase reflects recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs associated with coal-fueled facilities and rate design modernization proposals. The application also requests a revision to the ECAM to eliminate the sharing band and requests authorization to discontinue operations and recover costs associated with the early retirement of Cholla Unit 4. The proposed increase reflects several rate mitigation measures that include use of the remaining 2017 Tax Reform benefits to buy down plant balances, including Cholla Unit 4, and spreading the recovery of the depreciation of certain coal-fueled generation units over time periods that extend beyond the depreciable lives proposed in the depreciation rate study. In September 2020, PacifiCorp filed its rebuttal testimony that modified its requested increase in base rates from $7 million to $9 million and reflected an update to the rate mitigation measures for using the 2017 Tax Reform benefits. The WPSC determined that the rebuttal testimony filed constituted a material and substantial change to the original application and vacated the hearing that was scheduled for October 2020. The WPSC re-noticed PacifiCorp's case and rescheduled the hearings. The hearings began February 2021 and will resume March 2021. PacifiCorp has requested a rate effective date of July 1, 2021.

In March 2020, the Wyoming governor signed House of Representatives Enrolled Act No. 79, which requires the WPSC to adopt a standard to specify a percentage of an electric utility's electricity to be generated from coal‑fueled generation utilizing carbon capture technology by no later than 2030. The bill allows electric utilities to implement a surcharge not to exceed 2% of customer bills to recover costs to comply with the standard. PacifiCorp is working with the WPSC and other stakeholders on rules to implement the legislation. The overall impacts of this legislation cannot be determined at this time.

In April 2020, PacifiCorp filed its annual ECAM and RRA application with the WPSC requesting recovery of $7 million, or 1.0% of deferred net power costs from customers for the period January 1, 2019 through December 31, 2019, reflecting the difference between base and actual net power costs in the 2019 deferral period. The rate change went into effect on an interim basis June 15, 2020. This increase will be offset in part by continued rate credits associated with 2017 Tax Reform benefits and bonus depreciation for which minor adjustments are proposed to go into effect in the same timeframe. The hearing was held and the WPSC issued a bench decision in December 2020, reducing the requested recovery by $1 million.

Washington

In November 2019, PacifiCorp submitted its 2019 decoupling filing with the WUTC for the twelve months ended June 30, 2019. In January 2020, the WUTC approved PacifiCorp's 2019 decoupling filing, which resulted in a $12 million surcredit to customers effective February 1, 2020.
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In December 2019, PacifiCorp submitted its 2021 Washington general rate case requesting an overall decrease to rates of $4 million, or 1.1%, effective January 1, 2021. The case includes a proposed ten-year annual surcredit of $7 million to customers primarily associated with the amortization of excess deferred income taxes from 2017 Tax Reform. The case also includes a request for approval of a new cost allocation methodology, updated depreciation rates, incremental decommissioning costs and other closure costs associated with certain coal-fueled facilities, recovery of Energy Vision 2020 investments, and rate design modernization proposals. In April 2020, PacifiCorp submitted supplemental testimony and exhibits to incorporate the impacts of the recently completed decommissioning studies for PacifiCorp's coal-fueled generating resources and updated net power costs. The updates resulted in a revised request for an overall increase to rates of $11 million, or 3.2%. The parties subsequently reached a settlement in principle. In July 2020, the resulting all-party settlement was filed reflecting a rate decrease of $4 million or 1.2%. The settlement adjusts the current $8 million annual surcredit associated with 2017 Tax Reform that was set to expire January 1, 2021 to a five-year annual surcredit of $12 million, primarily associated with the amortization of excess deferred income taxes from 2017 Tax Reform. The settlement also includes approval of the new cost allocation methodology, updated depreciation rates, incremental decommissioning costs and other closure costs associated with certain coal-fueled facilities and rate design modernization proposals. While recovery of the Energy Vision 2020 investments is reflected in the settlement, revenue associated with those investments placed into service after May 1, 2020 will be subject to a prudency review in a separate filing in 2021 to address the cost recovery. In October 2020, PacifiCorp filed a petition for rehearing and motion to amend the settlement stipulation to reflect an increase to net power costs. In the settlement, parties had agreed to offset any increase to net power costs in the October update with the power cost adjustment mechanism deferral account balance. The October update resulted in an increase greater than the balance in the deferral account. To maintain the intent of the settlement to update net power costs and decrease rates for customers, PacifiCorp and the parties to the settlement reached an agreement to reflect this difference in the deferral account for future ratemaking. In November 2020, PacifiCorp and parties filed joint testimony supporting the amended settlement. The settlement was approved by the WUTC in December 2020.

In December 2020, PacifiCorp submitted its 2020 decoupling filing with the WUTC for the twelve months ended June 30, 2020. In January 2021, the WUTC approved PacifiCorp's 2020 decoupling filing, which resulted in a $3 million surcharge to customers over two years effective February 1, 2021.

Idaho

In April 2020, PacifiCorp filed its annual ECAM application with the IPUC requesting recovery of $21 million, or 3.0%, for deferred costs in 2019. This filing includes recovery of the difference in actual net power costs to the base level in rates, an adder for recovery of the Lake Side 2 resource, changes in PTCs, RECs, and a resource tracking mechanism to match costs with the benefits of wind repowering projects until they are reflected in base rates. This deferral is partially offset by $3 million related to amortization of excess deferred income taxes stemming from 2017 Tax Reform and net of recovery for a regulatory asset related to the prior depreciation study. In May 2020, the IPUC issued an order approving the application as filed with rates effective June 1, 2020.

In March 2020, PacifiCorp filed a notice of intent to file a general rate case with the IPUC. However, in June 2020, PacifiCorp negotiated a settlement with parties that allowed PacifiCorp to avoid filing a general rate case in 2020. The parties will support PacifiCorp's proposal to defer the incremental depreciation expense from the 2018 depreciation study during 2021, request deferred accounting treatment for unrecovered investment and closure costs when Cholla Unit 4 is retired, use a portion of the deferred income tax benefits associated with 2017 Tax Reform to accelerate the depreciation of Cholla Unit 4 and offset future rate increases, and include the Pryor Mountain wind facility and the repowering of the Foote Creek I wind facility in the resource tracking mechanism. In return, PacifiCorp will delay filing a general rate case until 2021 with rates effective January 1, 2022. In July 2020, PacifiCorp filed a settlement stipulation allowing the delay of the general rate case and the related application for an accounting order. In December 2020, the IPUC issued an order approving the application and associated stipulation as filed.

California

In April 2018, PacifiCorp filed a general rate case with the CPUC for an overall rate increase of $1 million, or 0.9%, effective January 1, 2019. A CPUC decision was issued in February 2020, resulting in a $6 million, or 5.1%, rate decrease effective February 6, 2020. The CPUC's final order also resulted in an additional rate decrease of $6 million, or 5.1%, over the next three years due to the amortization of excess deferred income taxes attributed to 2017 Tax Reform.

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California Senate Bill No. 123, resulting901 requires electric utilities to prepare and submit wildfire mitigation plans that describe the utilities' plans to prevent, combat and respond to wildfires affecting their service territories. In January 2020, the CPUC approved the resolution establishing procedural rules for the review and disposition of 2020 Wildfire Mitigation Plans. PacifiCorp submitted its 2020 Wildfire Mitigation Plan in February 2020 for which it received approval in June 2020.

In December 2019, PacifiCorp filed an application notifying the CPUC of the early retirement of the Cholla Unit 4 generating facility and requesting authorization to establish a memorandum account associated with the retirement and decommissioning of Cholla Unit 4. The memorandum account would be used to track costs associated with the unrecovered plant balance, decommissioning and other closure-related costs until PacifiCorp requests recovery in its next general rate case or other proceeding. In July 2020, the CPUC issued a decision approving the requested memorandum account with an effective date of December 27, 2019.

In August 2020, PacifiCorp filed an application with the CPUC to address California energy costs and GHG Allowance costs. The application includes a $7 million, or 6.7% decrease in energy costs, which is largely attributed to PTCs for new and repowered Energy Vision 2020 resources, and an increase of $1 million, or 0.8%, to recover costs for purchasing GHG allowances as required by the state's Cap-and-Trade Program. If this application is approved, this would result in an overall decrease of $6 million, or 5.9% effective January 1, 2021.

MidAmerican Energy

COVID-19

In May 2020, the IUB issued an order authorizing MidAmerican Energy to use a regulatory asset account to record and track increased costs and other financial impacts associated with COVID-19. As of December 31, 2020, MidAmerican Energy has $2 million in a regulatory asset for certain uncollectible customer accounts. At such time as MidAmerican Energy deems appropriate, it may initiate a proceeding with the IUB to seek recovery of such costs and other financial impacts. MidAmerican Energy cannot predict at this time the amount of such financial impacts from COVID-19 or when it will seek recovery of such costs with the IUB.

Iowa Transmission Legislation

In June 2020, Iowa enacted legislation that grants incumbent electric transmission owners the right to construct, own and maintain electric transmission lines that have been approved for construction in a federally registered planning authority's transmission plan and that connect to the incumbent electric transmission owner's facility. Also known as the Right of First Refusal, the law ensures MidAmerican Energy, as an incumbent electric transmission owner, has the legal right to construct, own and maintain transmission lines that have been approved by the MISO (or another federally registered planning authority) in MidAmerican Energy's service territory. To exercise the legal right, MidAmerican Energy must notify the IUB within 90 days of any such approval for construction that it intends to construct, own and maintain the electric transmission line. The law still requires an incumbent electric transmission owner to obtain a state franchise from the IUB to construct, erect, maintain or operate an electric transmission line and, upon issuance of a franchise, the incumbent electric transmission owner provide the IUB an estimate of the cost to construct the electric transmission line and, until the construction is complete, a quarterly report updating the estimated cost to construct the electric transmission line. Legal challenges have been brought against similar laws in other states, but courts that have ruled on such cases have upheld the states' laws. In October 2020, a lawsuit challenging the law was filed in Iowa by national transmission interests. The suit raises issues specific to Iowa law, and the State of Iowa is defending the law in the retirementsuit.

Renewable Subscription Program

In December 2020, MidAmerican Energy filed with the IUB a proposed Renewable Subscription Program tariff. If approved, the program will provide qualified industrial customers with the opportunity to meet their future energy growth above baseline levels with renewable energy from specific MidAmerican Energy wind-powered generation additions and 100 MWs of 812 MWplanned solar generation for 20 years at fixed prices based on the cost of coal-fueled generationsuch facilities. Under the program, MidAmerican Energy would own the facilities, retain PTCs and other tax benefits associated with the facilities and include all revenues and costs from the program in its Iowa-jurisdictional results of operation, but renewable attributes from the project would be specifically assigned to subscribing customers. Approval by 2019.the IUB is pending.

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IRP    NV Energy (Nevada Power and Sierra Pacific)


Regulatory Rate Reviews

In July 2016,June 2019, Sierra Pacific filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue increase of $5 million but requested an annual revenue reduction of $5 million. In September 2019, Sierra Pacific filed an all-party settlement for the electric regulatory rate review. The settlement resolves all cost of capital and revenue requirement issues and provides for an annual revenue reduction of $5 million and requires Sierra Pacific to share 50% of regulatory earnings above 9.7% with its statutorily required IRP.customers. The rate design portion of the regulatory rate review was not a part of the settlement and a hearing on rate design was held in November 2019. In August 2016,December 2019, the PUCN issued an order approving the stipulation but made some adjustments to the methodology for the weather normalization component of historical sales in rates, which resulted in an additional annual revenue reduction of $3 million. The new rates were effective January 1, 2020. In January 2020, Sierra Pacific filed a petition for rehearing challenging the PUCN's adjustments to the weather normalization methodology. In February 2020, the PUCN issued an order granting the petition for rehearing. In April 2020, the PUCN issued a final order approving a weather normalization methodology that changed the additional annual revenue reduction from $3 million to $2 million with an effective date of January 1, 2020. Customers billed under rates using the initial revenue reduction were issued credits in the fourth quarter of 2020.

In June 2020, Nevada Power filed an amendmentelectric regulatory rate review with the PUCN. The filing supported an annual revenue reduction of $96 million but requested an annual revenue reduction of $120 million. In September 2020, Nevada Power filed an all-party settlement for the electric regulatory rate review. The settlement resolved all but one issue and provided for an annual revenue reduction of $93 million and required Nevada Power to its related IRP. Asissue a part$120 million one-time bill credit, composed primarily of existing regulatory liabilities, to customers beginning in October 2020. The continuation of the filings,earning sharing mechanism was the one issue that was not addressed in the settlement. In October 2020, the PUCN held a hearing on the continuation of the earning sharing mechanism and issued an interim order accepting the settlement and requiring the one-time bill credit be issued to customers. The $120 million one-time bill credit was issued to customers in the fourth quarter of 2020. In December 2020, the PUCN issued a final order directing Nevada Power to continue the earning sharing mechanism subject to any modifications made to the earning sharing mechanism pursuant to an alternative rate-making ruling and to use the weather normalization methodology adopted for Sierra Pacific in its 2019 regulatory rate review. The new rates were effective on January 1, 2021.

In June 2020, Sierra Pacific filed a petition with the PUCN, which was later changed to an application, to adjudicate and establish the cost recovery mechanism for the One Nevada Transmission Line ("ON Line") addressing the reallocated portion of the ON Line revenue requirement. This filing was made concurrent with the Nevada Power regulatory rate review application, which addresses the ON Line reallocated revenue requirement related to Nevada Power. In December 2020, the PUCN issued a final order deferring the ON Line reallocated revenue and regulatory amortization until Sierra Pacific's next regulatory rate review.
        2017 Tax Reform

In February 2018, the Nevada Utilities sought PUCN authorization to acquire the South Point Energy Center, a 504-MW combined-cycle generating facility located in Arizona. In December 2016,made filings with the PUCN deniedproposing a tax rate reduction rider for the acquisitionlower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by the Nevada Utilities. The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing the Nevada Utilities to record the amortization of this facility. Inany excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 2017,1, 2018. Subsequently, the Nevada PowerUtilities filed a petition for reconsideration relating to the acquisitionamortization of South Point Energy Center.protected excess accumulated deferred income tax balances resulting from the 2017 Tax Reform. In February 2017,November 2018, the PUCN affirmedissued an order granting reconsideration and reaffirming the denialSeptember 2018 order. In December 2018, the Nevada Utilities filed a petition for judicial review with the district court. The district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, the Nevada Utilities filed a notice of appeal to the Nevada Supreme Court of the acquisition of South Point Energy Center.district court's order. The Nevada Utilities amendedhave agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review settlement. In December 2020, the PUCN issued a final order accepting the settlement. In January 2021, the Nevada Utilities filed their respective IRPswithdrawal and the matter was dismissed by the court.


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Price Stability Tariff

In November 2018, the Nevada Utilities made filings with the PUCN to implement the Customer Price Stability Tariff ("CPST"). The Nevada Utilities have designed the CPST to provide certain customers, namely those eligible to file an application pursuant to Chapter 704B of the Nevada Revised Statutes, with a market-based pricing option for renewable resources. The CPST provides for an energy rate that would replace the BTER and deferred energy accounting adjustment. The goal is to have an energy rate that yields an all-in effective rate that is competitive with market options available to such customers. In February 2019, the PUCN granted several intervenors the ability to participate in the proceeding. In June 2019, the Nevada Utilities withdrew their filings. In May 2020, the Nevada Utilities refiled the CPST incorporating the considerations raised by the PUCN and other intervenors and a hearing was held in September 2020. In November 2020, the PUCN issued an order approving the tariff with modified pricing and directing the Nevada Utilities to develop a methodology by which all eligible participants may have the opportunity to participate in the CPST program up to a limit with the same proportion of governmental entities' and non-governmental entities' MWh reserved for potentially interested customers as filed. In December 2020, the Nevada Utilities filed a petition for reconsideration of the pricing ordered by the PUCN.

Natural Disaster Protection Plan

The Nevada Utilities submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, intervening parties filed petitions for reconsideration. The Bureau of Consumer Protection filed a petition for judicial review with the district court in November 2017, requesting approval2020.In December 2020, the PUCN issued a second modified final order approving the natural disaster protection plan, as modified, and reopened its investigation and rulemaking on SB 329 to address rate design issues raised by intervenors. The comment period for the reopened investigation and rulemaking ended in early February 2021 and the matter is ongoing.
COVID-19

In March 2020, the PUCN issued an emergency order for the Nevada Utilities to establish regulatory asset accounts related to the costs of three long-term renewable purchase power contracts.maintaining service to customers affected by COVID-19 whose services would have been terminated or disconnected under normally-applicable terms of service. The Nevada law was modifiedUtilities may incur significant costs as a result of COVID-19, including, but not limited to, higher credit loss expenses resulting from a higher than average level of write-offs of uncollectible accounts associated with the suspension of disconnections and late payment fees to assist customers facing unprecedented economic pressures. The Nevada Utilities also expect to incur additional costs that cannot currently be predicted given the unprecedented nature of COVID-19.

Northern Powergrid Distribution Companies

GEMA, through the Ofgem, published its final determinations for the next set of price controls for transmission and gas distribution networks in 2017 under Senate Bill 146Great Britain in December 2020. These determinations do not apply to Northern Powergrid but aspects of the proposals are capable of application to Northern Powergrid's next price control, ("ED2"), which will begin in April 2023.

Regarding allowed return on capital, Ofgem determined a cost of equity of 4.55% (plus inflation calculated using the United Kingdom's consumer prices index including owner occupiers' housing costs, CPIH). When placed on a comparable footing, by adjusting for differences in the assumed equity ratio and the measure of inflation used, the determination for future filings requires Nevada Powertransmission and Sierra Pacific to file jointly.gas distribution is approximately 200 basis points lower than the current cost of equity for electricity distribution.

Kern River


In December 2016,2020, in respect of electricity distribution, GEMA published its decision on the methodology it will use to set the ED2 price control and prices from April 2023 to March 2028. This confirmed that Ofgem will apply many aspects of the proposals from the transmission and gas distribution price controls to electricity distribution. It did not cover financial aspects, including the allowed return on capital, which will be covered by a separate decision in Q1 2021, with confirmation not expected until final determinations in late 2022.


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BHE Pipeline Group

BHE GT&S

During 2018, BHE GT&S filed informational filings on FERC Form No. 501-G for EGTS and Carolina Gas. FERC terminated those proceedings without additional action. Also in 2018, BHE GT&S requested a waiver from filing the FERC Form No. 501-G filing requirement for Cove Point. The waiver request was granted.

In January 2020, pursuant to the terms of a previous settlement, Cove Point filed a general rate case for its FERC-jurisdictional services, with proposed rates to be effective March 1, 2020. Cove Point proposed an annual cost-of-service of approximately $182 million. In February 2020, the FERC approved suspending the changes in rates for five months following the proposed effective date, until August 1, 2020, subject to refund. In November 2020, Cove Point reached an agreement in principle with the active participants in the general rate case proceeding. Under the terms of the agreement in principle, Cove Point's rates effective August 1, 2020 result in an increase to annual revenues of approximately $4 million and a decrease in annual depreciation expense of approximately $1 million, compared to the rates in effect prior to August 1, 2020. The interim settlement rates were implemented November 1, 2020, and Cove Point's provision for rate refunds for August 2020 through October 2020 totaled $7 million. The agreement in principle was reflected in a stipulation and agreement filed with the FERC in January 2021, which is subject to final approval by the FERC.

        Northern Natural Gas

In October 2018, Northern Natural Gas filed an informational filing on FERC Form No. 501-G and a Statement Demonstrating Why No Rate Adjustment is Necessary. In January 2019, FERC initiated a Section 5 investigation to determine whether the rates currently charged by Northern Natural Gas are just and reasonable. As required by the FERC Section 5 order, Northern Natural Gas filed a cost and revenue study in April 2019. In July 2019, Northern Natural Gas filed a Section 4 rate case requesting increases in its transportation and storage rates. In January 2020, the FERC approved Northern Natural Gas' filing to implement its interim rates subject to refund, effective January 1, 2020. In June 2020, a settlement agreement was filed with the FERC, resolving the Section 5 investigation and Section 4 rate case and providing for increased service rates and depreciation rates. Market Area transportation reservation rates increased 28.5% and storage reservation rates increased 67.0% from the rates that were in effect in 2019. Depreciation rates are 2.3% for onshore transmission plant, 2.95% for LNG storage plant, 13.0% for intangible plant, and 2.75% for general plant. The settlement also provides for a Section 4 and Section 5 rate action moratorium through June 30, 2022, subject to certain exceptions, as well as provides for minimum annual maintenance capital spending. The settlement rates were implemented May 1, 2020, and the Company's provision for rate refunds for January 2020 through April 2020 totaled $69 million. The FERC approved the settlement in September 2020, and rate refunds to customers were processed in early October 2020.
        Kern River

In October 2018, Kern River filed an informational filing on FERC Form No. 501-G and a StipulationStatement Explaining Why No Rate Adjustment is Necessary, along with a Tax Reform Credit Rate Settlement in a companion docket. Kern River's Tax Reform Credit Rate Settlement offered an 11% rate credit against the Maximum Base Tariff Rates for firm service and Agreementany one-part rate that includes fixed costs which would result in an expected annual rate credit of Settlement$13 million. In November 2018, FERC approved Kern River's Tax Reform Credit effective November 15, 2018.
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    BHE Transmission

AltaLink

Rate Relief Application

In January 2021, driven by the pandemic and economic shutdown that has negatively impacted all Albertans, AltaLink filed an application with the FERCAUC that requested approval of tariff relief measures totaling C$350 million over the three-year period, 2021 to establish an alternative set2023. The tariff relief measures consist of rates for customers that extend service contracts associated with Kern River's original system and 2002 expansion, 2003 expansion and 2010 expansion projects. The stipulation provided a lower rate optionproposed refund to customers improvedof C$150 million of previously collected future income taxes and C$200 million of surplus accumulated depreciation. The future income tax refund will be evenly distributed over the likelihood of re-contracting expiring capacitytwo-year period, 2021 to 2022, with C$75 million included in each year. The accumulated depreciation surplus will be refunded over the three-year period, 2021 to 2023, with C$60 million included in 2021 and extended recovery of Kern River's rate base. Under2022, and C$80 million in 2023. If approved by the stipulation,AUC, these tariff relief measures will save customers havean estimated C$317 million over the optionthree-year period, 2021 to stay with previously established rates or choose the alternative lower rates. The reduction in rates was accomplished by extending the rate term to 25 years instead of the current term of 10 or 15 years, resulting in rates that are 9% to 26% lower than the previously established rates. Kern River received FERC approval of the stipulation in January 2017. The stipulation allowed regulatory depreciation on plant allocated to volumes of shippers that elected extended Period Two rates and plant allocated to capacity that has been turned back to be adjusted to 25 years, retroactive to the start of each Period Two term.2023.

ALP


General Tariff ApplicationsApplication


In November 2014, ALPAugust 2018, AltaLink filed a general tariff application ("GTA") requestingits 2019-2021 GTA with the AUC, delivering on the first three years of its commitment to approvekeep rates lower or flat at the approved 2018 revenue requirement of C$904 million for customers for the next five years. In addition, AltaLink proposed to provide a further tariff reduction over the three year period by refunding previously collected accumulated depreciation surplus of an additional C$31 million. In April 2019, AltaLink filed an update to its 2019-2021 GTA primarily to reflect its 2018 actual results and the impact of the AUC's decision on AltaLink's 2014-2015 Deferral Accounts Reconciliation Application. The application requested the approval of revised revenue requirements of C$811879 million, C$882 million and C$885 million for 20152019, 2020 and 2021, respectively.

In July 2019, AltaLink filed a 2019-2021 partial negotiated settlement application with the AUC. The application consisted of negotiated reductions that resulted in a net decrease of C$1.0 billion38 million to the three year total revenue requirement applied for 2016, primarily duein AltaLink's 2019-2021 GTA updated in April 2019. However, this was offset by AltaLink's request for an additional C$20 million of forecast transmission line clearance capital as part of an excluded matter. The 2019-2021 negotiated settlement agreement excluded certain matters related to continued investmentthe new salvage study and salvage recovery approach, additional capital spending and incremental asset retirements. AltaLink's salvage proposal is estimated to save customers C$267 million between 2019 and 2023. Excluded matters were examined by the AUC in capital projects asa hearing held in November 2019, with written arguments filed in January 2020.

In October 2019, AltaLink filed a letter with the AUC to request the continuation of the monthly interim refundable transmission tariff effective January 1, 2020, until a final tariff is approved. In October 2019, the AUC confirmed the interim refundable transmission tariff at C$74 million per month, until otherwise directed by the AESO. ALP amended the GTA in June 2015 and October 2015. In May 2016, the AUC issued its decision pertaining to the 2015-2016 GTA. ALP filed its 2015-2016 GTA compliance filing in July 2016 to comply with the AUC's decision and to provide customers with approximately C$415 million tariff relief in 2015 and 2016 through: (i) the discontinuance of construction work-in-progress ("CWIP") in rate base and the return to AFUDC accounting effective January 1, 2015, and (ii) the refund of previously collected CWIP in rate base as part of ALP's transmission tariffs during 2011-2014 less related returns. In October 2016, ALP amended its 2015-2016 GTA compliance filing made in July 2016 to reflect the impacts of the generic cost of capital decision issued in October 2016.AUC.


In December 2016,April 2020, the AUC issued its decision with respect to ALP's 2015-2016 GTAAltaLink's 2019-2021 GTA. The AUC approved the negotiated settlement agreement as filed and rendered its decision and directions on the excluded matters. The AUC declined to approve AltaLink's proposed salvage methodology at that time, but indicated it would initiate a generic proceeding to review the matter on an industry-wide basis. The AUC approved, on a placeholder basis, C$13 million of the additional C$20 million AltaLink requested for forecast transmission line clearance capital. The remaining C$7 million of capital investment was reviewed in AltaLink's subsequent compliance filing. Also, C$3 million of forecast operating expenses and C$4 million of forecast capital expenditures related to fire risk mitigation were approved, with an additional C$31 million of capital expenditures reviewed in the compliance filing. Finally, the AUC approved C$6 million of retirements for towers and fixtures.

In July 2020, the AUC approved AltaLink's compliance filing made in July 2016, as amended.establishing revised revenue requirements of C$895 million for 2019, C$894 million for 2020 and C$898 million for 2021, exclusive of the assets transferred to the PiikaniLink Limited Partnership and the KainaiLink Limited Partnership. The AUC found that ALP has either complied with or the AUC has otherwise relieved ALP from its compliance with all its directions in its decision exceptalso approved a revised monthly tariff of C$71 million for Directive 47, which dealt with the determinationSeptember 2020 to December 2020 and a monthly tariff of the refundC$74 million for previously collected CWIP in rate base2021. The 2021 revenue requirement is based on 8.5% return on equity and all related amounts. In January 2017, ALP filed its second compliance filing as directed37% deemed equity set by the AUC as placeholders.


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The AUC deferred its decision on AltaLink's proposed salvage methodology included in AltaLink's 2019-2021 GTA, pending a generic proceeding to consider the broader implications. This generic proceeding was closed and requested a technical conference to explain the technical aspects of the filing. In March 2017, the technical conference was held, and all key aspects of ALP's approach and methodologies used in its second compliance filing to comply with AUC directives were reviewed and discussed. In April 2017, ALPJuly 2020, AltaLink filed an application with the AUC an amendment to its second compliance filing.


In August 2017,for the AUC issued areview and variance of the AUC's decision with respect to ALP's second compliance filing amendment filed in April 2017. TheAltaLink's proposed salvage methodology. In September 2020, the AUC denied ALP's proposal to remove C$7 million of recapitalized AFUDC associated with canceled projectsgranted this review on the basis that the amount would more appropriately be recovered through ALP's deferral account reconciliation process. The AUC also directed the recalculation of the amount of related income taxes using typical direct assigned project schedules filed in the general tariff applications, and to adjust its funded future income tax liability only for the change in timing differences.

In September 2017, ALP filed its third compliance filing with the AUC which proposed a one-time payment to the AESO of C$7 million to settle the 2015-2016 final transmission tariffs of C$485 million for 2016 and C$723 million for 2015. In December 2017, the AUC approved ALP's third compliance filing as filed.

ALP filed its 2017-2018 GTA in February 2016. The AUC held this application in abeyance pending the release of the 2015-2016 GTA Decision. ALP subsequently updated and refiled its 2017-2018 GTA in August 2016 to reflect the findings and conclusions of the AUC in its 2015-2016 GTA decision issued in May 2016. In October 2016, ALP amended its 2017-2018 GTA to reflect the impacts of the generic cost of capital decision issued in October 2016 and other updates and revisions. The amendment requeststhere were changed circumstances that could lead the AUC to approve ALP's revenue requirement of C$891 million for 2017 and C$919 million for 2018. The 2017-2018 GTA reflected an additional C$185 million of tariff relief related to items approved inmaterially vary or rescind the 2015-2016 GTA decision.majority hearing panel's findings on AltaLink's proposed salvage methodology. In December 2016, the AUC approved ALP's request to enter into a negotiated settlement process.

In January 2017, ALP successfully reached a negotiated settlement with all parties regarding all aspects of ALP's 2017-2018 GTA and in February 2017, ALPOctober 2020, AltaLink filed with the AUC the 2017-2018 negotiated settlement application for approval. The application consists of negotiated reductions of C$16 million of operating expenses and C$40 million of transmission maintenance and information technology capital expenditures over the two years, as well as an increase to miscellaneous revenue of C$3 million. These reductions resulted in a C$24 million, or 1.3%, net decrease to the two-year total revenue requirement applied for in ALP's 2017-2018 GTA amendment filed in October 2016. In addition, ALP proposed to provide significant tariff relief through the refund of previously collected accumulated depreciation surplus of C$130 million (C$125 million net of other related impacts). The negotiated settlement agreement also provides for additional potential reductions over the two years through a 50/50 cost savings sharing mechanism.

During the second quarter 2017, ALP respondedresponses to information requests from the AUC, with respect to its 2017-2018 negotiated settlement agreement applicationwritten argument was filed in February 2017.by intervening parties and written reply argument was filed by AltaLink. In August 2017,November 2020, the AUC issued aits decision approving ALP's negotiated settlement agreementon AltaLink's review and variance application. The AUC decided to vary the original decision and approve AltaLink's proposed net salvage method and the revised transmission tariffs as filed, effective December 2020. The new salvage methodology will decrease the amount of salvage pre-collection resulting in reductions to AltaLink's revenue requirement from customers by C$24 million, C$27 million and C$31 million for the 2017-2018years 2019, 2020 and 2021, respectively. AltaLink delivered on the first three years of its commitment to customers to keep rates flat for five years by obtaining the necessary AUC approvals. AltaLink's approved 2019-2021 GTA as filed. Also,maintains customer rates below the AUC approved a C$31 million refund of accumulated depreciation surplus as opposed to the C$130 million refund proposed by ALP and three customer groups.

In November 2017, ALP filed and received AUC approval regarding its compliance filing, which includes revenue requirements2018 level of C$864904 million and C$888 million for 2017 and 2018, respectively.from 2019 to 2021.


20182022 Generic Cost of Capital Proceeding


In July 2017,December 2020, the AUC deniedinitiated the utilities' request that2022 generic cost of capital proceeding. This proceeding will consider the interim determinations of 8.5% return on equity and deemed capital structuresequity ratios for 20182022 and one or more additional test years. Due to the existing uncertainty as a result of the ongoing COVID-19 pandemic, before establishing a process schedule, the commission has requested participants to submit comments that address the following: (i) the continuation of the currently approved return on equity and deemed equity ratios for a further period of time; (ii) the appropriate test period for the proceeding; (iii) the scope of the proceeding, including whether a formula-based approach to return on equity should be made final, byutilized; (iv) the considerations to take into account when establishing the process for the proceeding; and (v) the avoidance of duplicative evidence and greater coordination and collaboration between parties.

In January 2021, AltaLink submitted a letter to the AUC stating that itdue to ongoing capital market volatility and other COVID-19 related uncertainties there are reasonable grounds for extending the currently approved 2021 return on equity and deemed equity ratio on a final basis for 2022. AltaLink further stated there is not preparedinsufficient time to finalize 2018 values in the absence of an evidentiary process and its intention to issue thecomplete a full generic cost of capital proceeding in 2021, in order to issue a decision prior to the beginning of 2022 and a formula-based approach should not be considered at this time. AltaLink suggested that a proceeding could be restarted in the third quarter of 2021, for 2018, 20192023 and 2020 by the endsubsequent years.

2021 Generic Cost of 2018 to reduce regulatory lag. The AUC also confirmed the process timelines with an oral hearing scheduled for March 2018.Capital Proceeding


In October 2017, ALP'sDecember 2018, the AUC initiated the 2021 GCOC proceeding to consider returning to a formula-based approach in determining the return on equity for a given year, starting with 2021. In April 2019, after receiving comments from interested parties, the AUC expanded the scope of the proceeding to include a traditional non-formulaic GCOC inquiry as well as the consideration of returning to a formula-based approach.

In January 2020, AltaLink filed company and expert evidence, was submitted recommending a range of 9%8.75% to 10.75%10.5% return on equity, on a recommended equity ratio of 40%. ALP also filed evidence outlining increased uncertainties in the Alberta utility regulatory environment. In January 2018, the for 2021 and 2022. The Consumers' Coalition of Alberta, the Utilities Consumer Advocate and the City of Calgary filed intervenor evidence. Theevidence recommending a range of 5.0% to 6.9% return on equity recommendedand an AltaLink common equity ratio of 35% to 37% for 2021 and 2022.

In March 2020, as a result of COVID-19, the AUC suspended the proceeding for an indefinite period. This decision was subject to review and reassessment by the intervenors ranges from 6.3%AUC every 30 to 7.75%.60 days. In May 2020, the AUC proposed a method to determine fair cost of capital parameters for 2021 given the circumstances presented by the COVID-19 pandemic. The AUC outlined four options for utilities and interested parties to consider and subsequently added a fifth option that set the 2021 return on equity at 8.3% as a balance between certainty and economic conditions.

In July 2020, AltaLink requested that the AUC continue to hold the proceeding in abeyance and revisit the issue in another 30 to 60 days. AltaLink also requested that if the AUC determined the proceeding should resume, the AUC should set a date for the filing of evidence by all parties in the first quarter of 2021 and that the proceeding should address return on equity for 2021 and 2022 only.

In August 2020, the AUC issued a letter indicating that it had decided not to resume the GCOC proceeding at that time and would continue to assess when, and under what conditions, the proceeding could resume.

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In October 2020, the AUC issued its decision and set the final approved return on equity and deemed equity ratio recommendedfor AltaLink by extending the current approved 8.5% and 37%, respectively, for the duration of 2021.

2014-2015 Deferral Accounts Reconciliation Application

In December 2018 and January 2019, the AUC issued decisions approving C$3,833 million out of the C$4,017 million capital project additions included in the application. Project costs of C$155 million were deferred to a future hearing. The AUC disallowed capital additions of approximately C$29 million including applicable AFUDC, pending receipt of additional supporting documentation for certain items.

AltaLink filed compliance filings in February and September 2019 reflecting the AUC's directives, and AUC approval was received in November 2019. However, the AUC had previously ruled that it would put in placeholder amounts for the approved costs of the assets in the 2014-2015 Deferral Accounts Reconciliation Application proceeding until the AUC-initiated proceeding to consider the issue of transmission asset utilization.

In January 2021, the AUC approved the placeholder amounts as final, noting that the transmission asset utilization proceeding was not initiated and the AUC has no immediate plans to do so.

2016-2018 Deferral Accounts Reconciliation Application

In July 2019, AltaLink filed its 2016-2018 Deferral Accounts Reconciliation Application with the AUC. The application included 116 projects with total gross capital additions, including AFUDC, of C$976 million. In December 2019, the AUC announced a series of technical meetings to address AltaLink's responses to certain information requests.

In March 2020, the AUC issued a letter indicating that it would provide further process steps after AltaLink submitted its remaining responses to information requests and the Consumers' Coalition of Alberta filed its intervener evidence. In May 2020, AltaLink provided additional responses to information requests as directed by the intervenorsAUC. In accordance with the AUC's revised process schedule, the Consumers' Coalition of Alberta filed its intervener evidence in June 2020, and AltaLink subsequently filed information requests on the intervener evidence in June 2020 and filed its rebuttal evidence in July 2020.

In August 2020, the AUC determined that a hearing was not required and issued a proceeding schedule to provide for ALP ranges from 35% to 37%.argument, reply argument and the close of record by September 2020. In September 2020, AltaLink and interveners filed written argument and reply argument.



In December 2020, the AUC issued its decision approving C$941 million out of the C$947 million capital project additions included in the application. The AUC disallowed capital additions of approximately C$6 million. As part of this proceeding, the AUC also approved the following: AltaLink's deferral accounts for taxes other than income taxes, long-term debt, and annual structure payments; placeholder treatment for project trailing costs associated with two ongoing disputes; and canceled project costs incurred in 2017 and 2018. AltaLink filed compliance filings in January 2021 reflecting the AUC's directives.

2019 Deferral AccountAccounts Reconciliation Application


In April 2017, ALPOctober 2020, AltaLink filed its application with the AUC, with respect to ALP's 2014 projects and deferral accounts and specific 2015 projects. The applicationwhich includes approximately C$2.0 billion in net capital additions. In June 2017, the AUC ruled that the scope of the deferral account proceeding would not be extended to consider the utilization of assets for which final cost approval is sought. However, the AUC will initiate a separate proceeding to address the issue of transmission asset utilization and how the corporate and property law principles applied in the Utility Asset Disposition decision may relate.

In December 2017, ALP amended its application to include the remaining capital projects completed in 2015. The amended 2014 and 2015 deferral account reconciliation application includes 110 completedten projects with total gross capital additions excluding AFUDC, of C$3.8 billion.129 million, including applicable AFUDC. In December 2020, AltaLink provided responses to AUC information requests, interveners filed written arguments and AltaLink filed reply arguments.



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Alberta Electric System Operator Tariff Decision

In September 2019, the AUC issued its decision with respect to the 2018 AESO tariff. As part of this decision, the AUC approved AltaLink's proposal to refund contributions made by distribution facility owners relative to transmission projects built and owned by transmission facility owners. The proposal would benefit distribution customers by flowing through the lower cost of capital of the transmission facility owner rather than the higher cost of capital of the distribution facility owner. As directed by the AUC, AltaLink would pay FortisAlberta the unamortized contribution balance of approximately C$375 million as of December 2017 and add the amount to AltaLink's rate base if the decision was upheld. The AUC directed the AESO to consult with AltaLink to provide a joint proposal to implement AltaLink's contribution proposal effective in January 2018. In September 2019, FortisAlberta filed a review and variance application with the AUC requesting the AUC re-evaluate its findings with respect to AltaLink's customer contribution proposal relative to distribution facility owners. In October 2019, the AUC granted FortisAlberta's request to proceed to a review and variance with the record closed in November 2019 after submissions from FortisAlberta, AltaLink, and other interested parties. FortisAlberta also filed for permission to appeal the decision with the Court of Appeal, which would not be heard until after the AUC's review proceeding.

In December 2019, the AUC reopened the record of the review and variance proceeding and, in January 2020, issued specific information requests to FortisAlberta and AltaLink to clarify the evidence previously filed. AltaLink and FortisAlberta filed responses to the AUC information requests in January 2020. In February 2020, FortisAlberta filed a motion with the AUC requesting the appointment of a review panel to convene an oral hearing.

In March 2020, as a result of COVID-19, the AUC advised that it would be immediately deferring all public hearings, consultations or information sessions until further notice and requested FortisAlberta to advise the AUC whether it wished to amend its motion. In April 2020, FortisAlberta filed its response requesting an oral hearing, to commence in 105 days.

In May 2020, the AUC denied FortisAlberta's request for an oral hearing but requested expert tax evidence on three areas of disagreement between AltaLink and FortisAlberta. AltaLink and FortisAlberta filed expert evidence in July 2020. The AUC set a further process of information requests and responses and written submissions, which were scheduled to be completed in September 2020.

In September 2020, AltaLink and FortisAlberta filed a written argument and a reply argument. In November 2020, the AUC issued its decision with respect to FortisAlberta's review and variance proceeding. In its decision, the AUC rescinded its earlier findings from the original September 2019 decision which (i) directed FortisAlberta to transfer the unamortized contribution balance of approximately C$375 million to AltaLink and (ii) ruled the new contribution policy proposed by AltaLink be applied. The AUC's decision was based on two main areas: (i) if the original decision was confirmed, FortisAlberta would incur incremental income tax, carrying costs and debt restructuring costs of at least C$117 million that would be required to be recovered from ratepayers and (ii) the AUC determined that a majority of the approximately C$40 million in savings to ratepayers, which the hearing panel relied on as the basis for their original decision, could be achieved by directing FortisAlberta to adjust the applicable amortization rate for its AESO contributions to match the service lives of the transmission assets.

In November 2020, the AUC initiated a separate proceeding to (i) examine the legal basis of the current AESO customer contribution policy as it pertains to all transmission facility owners and distribution facility owners, (ii) consider whether there is a need for a new policy, including consideration of AltaLink's proposed policy and (iii) if approved, set the date on which any new policy would commence.

In December 2020, AltaLink filed its submissions in this proceeding, stating that the current customer contribution policy is contrary to business principles as it allows a distribution facility owner to earn a return on assets that are owned, operated and maintained by a transmission facility owner who has all the risk of ownership and is also contrary to the legislative scheme in Alberta, which delineates the ownership of transmission and distribution assets. AltaLink also stated it disagrees with the AUC's decision and it intends to file an appeal.

In December 2020, AltaLink filed its application for permission to appeal the AUC's review and variance decision with the Court of Appeal. The permission to appeal application is scheduled to be heard in May 2021.
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BHE U.S. Transmission


A significant portion of ETT's revenues are based on interim rate changes that can be filed twice annually and are subject to review and possible true-up in the next filed base regulatory rate review. In December 2017, the most recent interim rate change filing was approved which set total annual revenue requirements at $332 million and a rate base of $2.5 billion.review scheduled for no later than February 1, 2023. In January 2017,2021, the PUCTPublic Utilities Commission of Texas ("PUCT") approved ETT's request to suspend thea base regulatory rate review filing scheduled for February 2017 and set ETT's annual revenue requirement to $327 million, effective March 2017.2021. Results of a base regulatory rate review would be prospective except for any deemed disallowance by the PUCT of the transmission investment since the initial base regulatory rate review in 2007. In June 2018, the PUCT approved ETT's application to reduce its transmission revenue by $28 million to reflect the lower federal income tax rate due to 2017 Tax Reform with the amortization of excess accumulated deferred federal income taxes expected to be addressed in the next base rate case.


ENVIRONMENTAL LAWS AND REGULATIONS


Each Registrant is subject to federal, state, local and foreign laws and regulations regarding climate change, RPS, air and water quality, RPS, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact each Registrant's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. Each Registrant believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. The Company has cumulative investments in wind, solar, geothermal and biomass generating facilities of approximately $34 billion and plans to spend an additional $3 billion on the construction of wind-powered generating facilities, repowering certain existing wind-powered generating facilities and funding of wind tax equity investments through 2021. Refer to "Liquidity and Capital Resources" of each respective Registrant in Item 7 of this Form 10-K for discussion of each Registrant's forecast environmental-relatedrenewable generation-related capital expenditures.


Climate Change

In December 2015, an international agreement was negotiated by 195 nations to create a universal framework for coordinated action on climate change in what is referred to as the Paris Agreement. The Paris Agreement reaffirms the goal of limiting global temperature increase well below 2 degrees Celsius, while urging efforts to limit the increase to 1.5 degrees Celsius; establishes commitments by all parties to make nationally determined contributions and pursue domestic measures aimed at achieving the commitments; commits all countries to submit emissions inventories and report regularly on their emissions and progress made in implementing and achieving their nationally determined commitments; and commits all countries to submit new commitments every five years, with the expectation that the commitments will get more aggressive. In the context of the Paris Agreement, the United States agreed to reduce GHG emissions 26% to 28% by 2025 from 2005 levels. After more than 55 countries representing more than 55% of global GHG emissions submitted their ratification documents, the Paris Agreement became effective November 4, 2016. On June 1, 2017, President Trump announced the United States would begin the process of withdrawing from the Paris Agreement. The United States completed its withdrawal from the Paris Agreement on November 4, 2020. President Biden accepted the terms of the climate agreement January 20, 2021, and the United States completed its reentry February 19, 2021.

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GHG Performance Standards

Under the Clean Air Act, the EPA may establish emissions standards that reflect the degree of emissions reductions achievable through the best technology that has been demonstrated, taking into consideration the cost of achieving those reductions and any non-air quality health and environmental impact and energy requirements. On August 3, 2015, the EPA issued final new source performance standards, establishing a standard of 1,000 pounds of carbon dioxide per MWh for large natural gas-fueled generating facilities and 1,400 pounds of carbon dioxide per MWh for new coal-fueled generating facilities with the "Best System of Emission Reduction" reflecting highly efficient supercritical pulverized coal facilities with partial carbon capture and sequestration or integrated gasification combined-cycle units that are co-fired with natural gas or pre-combustion slipstream capture of carbon dioxide. The new source performance standards were appealed to the D.C. Circuit and oral argument was scheduled for April 17, 2017. However, oral argument was deferred and the court held the case in abeyance for an indefinite period of time. On December 6, 2018, the EPA announced revisions to new source performance standards for new and reconstructed coal-fueled units. EPA proposes to revise carbon dioxide emission limits for new coal-fueled facilities to 1,900 pounds per MWh for small units and 2,000 pounds per MWh for large units. The EPA would define the best system of emission reduction for new and modified units as the most efficient demonstrated steam cycle, combined with best operating practices. On January 12, 2021, EPA finalized a rule focused solely on a significant contribution finding for purposes of regulating source categories' GHG emissions. The final rule sets no specific regulatory standards and contains no regulatory text, nor does it address what constitutes the best system of emission reduction for new, modified and reconstructed electric generating units. EPA confirms in the "significant contribution" rule that electric generating units remain a listed source category under Clean Air Act Section 111(b), reaching that conclusion through the introduction of an emissions threshold framework by which a source category is deemed to contribute significantly to dangerous air pollution due to their GHG emissions if the amount of those emissions exceeds 3% of total GHG emissions in the United States. Under this methodology, no other source category would qualify for regulation. The significant contribution rule will take effect 60 days after publication in the Federal Register but is expected to be quickly revisited by the Biden administration. Because the significant contribution rule did not alter the emission limits or technology requirements of the 2015 rule, any new fossil-fueled generating facilities will be required to meet the GHG new source performance standards.
Affordable Clean Energy Rule

In June 2014, the EPA released proposed regulations to address GHG emissions from existing fossil-fueled generating facilities, referred to as the Clean Power Plan, under Section 111(d) of the Clean Air Act. The EPA's proposal calculated state-specific emission rate targets to be achieved based on the "Best System of Emission Reduction." In August 2015, the final Clean Power Plan was released, which established the Best System of Emission Reduction as including: (a) heat rate improvements; (b) increased utilization of existing combined-cycle natural gas-fueled generating facilities; and (c) increased deployment of new and incremental non-carbon generation placed in-service after 2012. The Clean Power Plan was stayed by the United States Supreme Court in February 2016 while litigation proceeded. On October 10, 2017, the EPA issued a proposal to repeal the Clean Power Plan, which was intended to achieve an overall reduction in carbon dioxide emissions from existing fossil-fueled electric generating units of 32% below 2005 levels. On June 19, 2019, the EPA repealed the Clean Power Plan and issued the Affordable Clean Energy rule, which fully replaced the Clean Power Plan. In the Affordable Clean Energy rule, the EPA determined that the best system of emissions reduction for existing coal-fueled power plants is limited to actions that can be taken at a point source facility, specifically heat rate improvements and identified a set of candidate technologies and measures that could improve heat rates. Measures taken to meet the standards of performance must be achieved at the source itself. States have until July 2022 to submit compliance plans to the EPA. The Affordable Clean Energy rule was challenged by environmental and health groups in the D.C. Circuit. On January 19, 2021, the D.C. Circuit vacated and remanded the Affordable Clean Energy rule to the EPA, finding that the rule "rested critically on a mistaken reading of the Clean Air Act" that limited the best system of emission reduction to actions taken at a facility. Until the EPA indicates its course of action in response to this decision, the full impacts on the Registrants cannot be determined. PacifiCorp, MidAmerican Energy, Nevada Power and Sierra Pacific have historically pursued cost-effective projects, including plant efficiency improvements, increased diversification of their generating fleets to include deployment of renewable and lower carbon generating resources, and advanced customer energy efficiency programs.

New Source Performance Standards for Methane Emissions

In August 2020, the EPA finalized regulations to rescind standards for methane emissions from the oil and gas sector. The changes eliminate requirements to regulate methane emissions from the production, processing, transmission and storage of oil and gas. The rule was immediately challenged by environmental and tribal groups, as well as numerous states. In January 2021, the D.C. Circuit lifted an administrative stay and allowed the rule to take effect, finding that groups challenging the rule had not met the standard for a long-term stay. Until such time as litigation is exhausted, the relevant Registrants cannot determine whether additional action may be required.
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Regional and State Activities

Several states have promulgated or otherwise participate in state-specific or regional laws or initiatives to report or mitigate GHG emissions. These are expected to impact the relevant Registrant, and include:

In June 2013, Nevada Senate Bill 123 ("SB 123") was signed into law. Among other things, SB 123 and regulations thereunder required Nevada Power to file with the PUCN an emission reduction and capacity replacement plan by May 1, 2014. In May 2014, Nevada Power filed its emissions reduction capacity replacement plan. The plan provided for the retirement or elimination of 300 MWs of coal-fueled generating capacity by December 31, 2014, another 250 MWs of coal-fueled generating capacity by December 31, 2017, and another 250 MWs of coal generating capacity by December 31, 2019, along with replacement of such capacity with a mixture of constructed, acquired or contracted renewable and non-technology specific generating units. The plan also sets forth the expected timeline and costs associated with decommissioning coal-fueled generating units that will be retired or eliminated pursuant to the plan. The PUCN has the authority to approve or modify the emission reduction and capacity replacement plan filed by Nevada Power. The PUCN may approve variations to Nevada Power's resource plans relative to requirements under SB 123. Refer to Nevada Power's Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the ERCR Plan.

Under the authority of California's Global Warming Solutions Act, which includes a series of policies aimed at returning California GHG emissions to 1990 levels by 2020, the California Air Resources Board adopted a GHG cap-and-trade program with an effective date of January 1, 2012; compliance obligations were imposed on entities beginning in 2013. PacifiCorp is subject to the cap-and-trade program as a retail service provider in California and an importer of wholesale energy into California. In 2015, Governor Jerry Brown issued an executive order to reduce emissions to 40% below 1990 levels by 2030 and 80% by 2050. In September 2016, California Senate Bill 32 was signed into law establishing GHG emissions reduction targets of 40% below 1990 levels by 2030.

The states of California, Washington and Oregon have adopted GHG emissions performance standards for base load electricity generating resources. Under the laws in California and Oregon, the emissions performance standards provide that emissions must not exceed 1,100 pounds of carbon dioxide per MWh. In September 2018, the Washington Department of Commerce amended the emissions performance standards to provide that GHG emissions for base load electricity generating resources must not exceed 925 pounds of carbon dioxide per MWh. These GHG emissions performance standards generally prohibit electric utilities from entering into long-term financial commitments (e.g., new ownership investments, upgrades, or new or renewed contracts with a term of five or more years) unless any base load generation supplied under long-term financial commitments comply with the GHG emissions performance standards.

In September 2016, the Washington State Department of Ecology issued a final rule regulating GHG emissions from sources in Washington. The rule regulates GHG including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride beginning in 2017 with three-year compliance periods thereafter (i.e., 2017-2019, 2020-2022, etc.). Under the rule, the Washington State Department of Ecology established GHG emissions reduction pathways for all covered entities. Covered entities may use emission reduction units, which may be traded with other covered entities, to meet their compliance requirements. PacifiCorp's resources that are covered under the rule include the Chehalis generating facility, which is a natural gas combined-cycle plant located in Washington state. PacifiCorp received its baseline emission order on December 17, 2017, which specified the emission reduction requirements for the Chehalis generating facility every three years beginning in 2017. The reduction requirements average 1.7% per year. However, the Washington State Department of Ecology suspended the compliance obligations of the Clean Air Rule after a Thurston County Superior Court judge ruled the state lacks authority to mandate reductions from indirect emitters. On January 16, 2020, the Washington Supreme Court affirmed that the rule limits the applicability of emission standards to actual emitters and cannot be expanded to non-emitters. The court also found that the rule itself is severable, so that the Washington State Department of Ecology may continue to enforce the rule as it applies to emitters. The case was remanded for further proceedings. Pending further action by the lower court, the rule itself remains suspended, but entities subject to the rule are required to continue reporting emissions.

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The Regional Greenhouse Gas Initiative, a mandatory, market-based effort to cap and reduce power sector GHG emissions in eleven Eastern states, required, beginning in 2009, the reduction of carbon dioxide emissions from the power sector of 10% by 2018. Following a program review in 2012, the nine Regional Greenhouse Gas Initiative states implemented a new 2014 cap which was approximately 45% lower than the 2012-2013 cap. The cap is reduced each year by 2.5% from 2015 to 2020. In December 2017, an updated model rule was released by the Regional Greenhouse Gas Initiative states which includes an additional 30% regional cap reduction between 2020 and 2030.

Renewable Portfolio Standards

Each state's RPS described below could significantly impact the relevant Registrant's consolidated financial results. Resources that meet the qualifying electricity requirements under each RPS vary from state to state. Each state's RPS requires some form of compliance reporting and the relevant Registrant can be subject to penalties in the event of noncompliance. Each Registrant believes it is in material compliance with all applicable RPS laws and regulations.

In 1983, Iowa became the first state in the United States to adopt a RPS requiring the state utilities to own or to contract for a combined total of 105 MWs of renewable generating capacity and associated energy production. The IUB allocated the 105-MW requirement between the two utilities in Iowa based on each utility's percentage of their combined estimated Iowa retail peak demand in 1990 resulting in MidAmerican Energy being allocated a RPS requirement of 55.2 MWs. The utility must meet its RPS obligation by either owning renewable energy production facilities located in Iowa or entering into long-term contracts to purchase or wheel electricity from renewable production facilities located in the utility's service area.

Since 1997, NV Energy has been required to comply with a RPS. In November 2020, Nevada voters approved a constitution amendment that requires the state to get at least half its electricity from renewable sources by 2030. Beginning in 2022, the state must get 22% of its electricity from renewable sources. That percentage is increased incrementally over eight years up to the 50% threshold by 2030. The state's previous RPS required utilities to get 25% of their electricity from renewable sources by 2025.

Utah's Energy Resource and Carbon Emission Reduction Initiative provides that, beginning in the year 2025, 20% of adjusted retail electric sales of all Utah utilities be supplied by renewable energy, if it is cost effective. Retail electric sales will be adjusted by deducting the amount of generation from sources that produce zero or reduced carbon emissions, and for sales avoided as a result of energy efficiency and DSM programs. Qualifying renewable energy sources can be located anywhere within the WECC, and RECs can be used.

The Oregon Renewable Energy Act ("OREA") provides a comprehensive renewable energy policy and RPS for Oregon. Subject to certain exemptions and cost limitations established in the law, PacifiCorp and other qualifying electric utilities must meet minimum qualifying electricity requirements for electricity sold to retail customers of at least 5% in 2011 through 2014, 15% in 2015 through 2019, and 20% in 2020 through 2024. In March 2016, Oregon Senate Bill 1547-B ("SB 1547-B"), the Clean Electricity and Coal Transition Plan, was signed into law. SB 1547-B requires coal-fueled resources be eliminated from Oregon's allocation of electricity by January 1, 2030 and increases the current RPS target from 25% in 2025 to 50% by 2040. SB 1547-B also implements new REC banking provisions, as well as the following interim RPS targets: 27% in 2025 through 2029, 35% in 2030 through 2034, 45% in 2035 through 2039, and 50% by 2040 and subsequent years. As required by the OREA, the OPUC has approved an automatic adjustment clause to allow an electric utility, including PacifiCorp, to recover prudently incurred costs of its investments in renewable energy generating facilities and associated transmission costs.

Washington's Energy Independence Act establishes a renewable energy target for qualifying electric utilities, including PacifiCorp. The requirements are 3% of retail sales by January 1, 2012 through 2015, 9% of retail sales by January 1, 2016 through 2019 and 15% of retail sales by January 1, 2020 and each year thereafter. In April 2013, Washington State Senate Bill 5400 ("SB 5400") was signed into law. SB 5400 expands the geographic area in which eligible renewable resources may be located to beyond the Pacific Northwest, allowing renewable resources located in all states served by PacifiCorp to qualify. SB 5400 also provides PacifiCorp with additional flexibility and options to meet Washington's renewable mandates. In May 2019, the state of Washington enacted Senate Bill 5116, the Clean Energy Transformation Act. The legislation, among other things, requires Washington utilities to be carbon neutral by January 1, 2030 and institutes a planning target of 100% non-emitting generation by 2045. Electric utilities must also eliminate from rates coal-fueled resources by December 31, 2025.

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The California RPS required all California retail sellers to procure an average of 20% of retail load from renewable resources by December 31, 2013, 25% by December 31, 2016 and 33% by December 31, 2020. In October 2015, California Senate Bill No. 350 became law and increased the RPS target to 50% by December 31, 2030. The state's RPS was further expanded in September 2018, when California Senate Bill 100 ("SB 100"), the 100 Percent Clean Energy Act of 2018 was signed into law. In addition to requiring retail sellers to meet a RPS target of 60% by 2030, SB 100 enabled a longer-term planning target for 100% of total California retail sales to come from eligible renewable energy resources and zero-carbon resources by December 31, 2045. In December 2011, the CPUC adopted a decision confirming that multi-jurisdictional utilities, such as PacifiCorp, are not subject to the percentage limits within the three product content categories of RPS-eligible resources established by the legislation that have been imposed on other California retail sellers.

Clean Air Act Regulations


The Clean Air Act is a federal law administered by the EPA that provides a framework for protecting and improving the nation's air quality and controlling sources of air emissions. The implementation of new standards is generally outlined in SIPs, which are a collection of regulations, programs and policies to be followed. SIPs vary by state and are subject to public hearings and EPA approval. Some states may adopt additional or more stringent requirements than those implemented by the EPA. The major Clean Air Act programs most directly affecting the Registrants' operations are described below.


National Ambient Air Quality Standards


Under the authority of the Clean Air Act, the EPA sets minimum national ambient air quality standardsNAAQS for six principal pollutants, consisting of carbon monoxide, lead, nitrogen oxides,NOx, particulate matter, ozone and sulfur dioxide,SO2, considered harmful to public health and the environment. Areas that achieve the standards, as determined by ambient air quality monitoring, are characterized as being in attainment, while those that fail to meet the standards are designated as being nonattainment areas. Generally, sources of emissions in a nonattainment area that are determined to contribute to the nonattainment are required to reduce emissions. Most air quality standards require measurement over a defined period of time to determine the average concentration of the pollutant present. Currently, with the exceptions described in the following paragraphs, air quality monitoring data indicates that all counties where the relevant Registrant's major emission sources are located are in attainment of the current national ambient air quality standards.NAAQS.


In October 2015, theOn June 4, 2018, EPA revised the national ambient air quality standard for ground level ozone, strengthening the standard from 75 parts per billion to 70 parts per billion. It is anticipated that the EPA will make attainment/nonattainmentpublished final designations for much of the revised standards by late 2017. NonattainmentUnited States. Relevant to the Registrants, these designations include classifying Yuma County, Arizona; Clark County, Nevada; and the Northern Wasatch Front, Southern Wasatch Front and Duchesne and Uintah counties in Utah as nonattainment-marginal with the 2015 ozone standard. These areas will have until 2020 to late 2037be required to meet the standard. Given2015 standard three years from the level at whichAugust 3, 2018, effective date. All other areas relevant to the standard was set in conjunctionRegistrants were designated attainment/unclassifiable with retirements andthis same action. On January 29, 2021, the installationD.C. Circuit vacated several provisions of controls, the new standard is not expected2018 implementing rules for the 2015 ozone standards for contravening the Clean Air Act. Until the EPA takes final action consistent with this ruling, impacts to have a significant impact on the relevant Registrant. The EPA designated the entire state of Iowa as attainment/unclassifiable on November 16, 2017.

Until the 2015 standard is fully implemented, the EPA continues to implement the 2008 ozone standards. The Upper Green River Basin Area in Wyoming, including all of Sublette and portions of Lincoln and Sweetwater Counties, were proposed to be designated as nonattainment for the 2008 ozone standard. When the final designations were released in April 2012, portions of Lincoln and Sweetwater Counties and Sublette County were determined to be in marginal nonattainment. While PacifiCorp's Jim Bridger plant is located in Sweetwater County, it is not in the portion of the designated nonattainment area and has not been impacted by the 2012 designation. In December 2017, EPA Region 9 notified Nevada of its intent to designate a portion of Clark County as nonattainment under the 2015 standard and will modify the state's recommendation for this area. The EPA also intends to designate all other areas in the state not previously designated as attainment/unclassifiable. This redesignation to nonattainment could potentially impact Nevada Power's Clark, Sun Peak, Las Vegas, Lenzie, Silverhawk, Harry Allen, Higgins, and Goodsprings generating facilities. However, until such time as the 2015 standard is implemented for Clark County in a final action, any potential impacts cannot be determined. In order for the EPA to consider more current air quality data in the final designation, Nevada must submit certified quality-assured air quality monitoring data for the time period 2015-2017 to the EPA by February 28, 2018. After considering any additional information received, the EPA plans to promulgate final ozone designations in spring of 2018.

On December 20, 2017, the EPA responded to the state of Arizona's recommendation that a section of Yuma County, in which the Yuma independent power project is located, be designated as nonattainment with respect to the 2015 National Ambient Air Quality Standards for ozone, indicating its acceptance of the state's designations for areas in attainment, and requesting additional data to finalize designations of nonattainment areas by February 28, 2018. The Yuma independent power project could be impacted by the requirements of the final rule. Until such time as the designations are final, any potential impactsRegistrants cannot be determined.


In January 2010, the EPA finalized a one-hour air quality standard for nitrogen dioxide at 100 parts per billion. In February 2012, the EPA published final designations indicating that based on air quality monitoring data, all areas of the country are designated as "unclassifiable/attainment" for the 2010 nitrogen dioxide national ambient air quality standard.NAAQS. On April 6, 2018, EPA issued a decision to retain the 2010 nitrogen dioxide NAAQS without revision.


In June 2010, the EPA finalized a new national ambient air quality standardNAAQS for sulfur dioxide.SO2. Under the 2010 rule, areas must meet a one-hour standard of 75 parts per billion utilizing a three-year average. The rule utilizes source modeling in addition to the installation of ambient monitors where sulfur dioxideSO2 emissions impact populated areas. Attainment designations were due by June 2012; however, citing a lack of sufficient information to make the designations, the EPA did not issue its final designations until July 2013 and determined, at that date, that a portion of Muscatine County, Iowa was in nonattainment for the one-hour sulfur dioxideSO2 standard. MidAmerican Energy's Louisa coal-fueled generating facility is located just outside of Muscatine County, south of the violating monitor. In its final designation, the EPA indicated that it was not yet prepared to conclude that the emissions from the Louisa coal-fueled generating facility contribute to the monitored violation or to other possible violations, and that in a subsequent round of designations, the EPA will make decisions for areas and sources outside Muscatine County. MidAmerican Energy does not believe a subsequent nonattainment designation will have a material impact on the Louisa coal-fueled generating facility. Although the EPA's July 2013 designations did not impact PacifiCorp's nor the Nevada Utilities' generating facilities, the EPA's assessment of sulfur dioxideSO2 area designations will continue with the deployment of additional sulfur dioxideSO2 monitoring networks across the country. On February 25, 2019, EPA issued a decision to retain the 2010 SO2 NAAQS without revision.


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The Sierra Club filed a lawsuit against the EPA in August 2013 with respect to the one-hour sulfur dioxideSO2 standards and its failure to make certain attainment designations in a timely manner. In March 2015, the United States District Court for the Northern District of California ("Northern District of California") accepted as an enforceable order an agreement between the EPA and Sierra Club to resolve litigation concerning the deadline for completing the designations. The Northern District of California's order directed the EPA to complete designations in three phases: the first phase by July 2, 2016; the second phase by December 31, 2017; and the final phase by December 31, 2020. The first phase of the designations require the EPA to designate two groups of areas: 1) areas that have newly monitored violations of the 2010 sulfur dioxideSO2 standard; and 2) areas that contain any stationary source that, according to the EPA's data, either emitted more than 16,000 tons of sulfur dioxideSO2 in 2012 or emitted more than 2,600 tons of sulfur dioxideSO2 and had an emission rate of at least 0.45 lbs/sulfur dioxideSO2 per million British thermal unit in 2012 and, as of March 2, 2015, had not been announced for retirement. MidAmerican Energy's George Neal Unit 4 and the Ottumwa Generating Station (in which MidAmerican Energy has a majority ownership interest, but does not operate), are included as units subject to the first phase of the designations, having emitted more than 2,600 tons of sulfur dioxideSO2 and having an emission rate of at least 0.45 lbs/sulfur dioxideSO2 per million British thermal unit in 2012. States may submit to the EPA updated recommendations and supporting information for the EPA to consider in making its determinations. Iowa submitted documentation to the EPA in April 2016 supporting its recommendation that Des Moines, Wapello and Woodbury Counties be designated as being in attainment of the standard. In July 2016, the EPA's final designations were published in the Federal Register indicating portions of Muscatine County, Iowa were in nonattainment with the 2010 sulfur dioxideSO2 standard, Woodbury County, Iowa was unclassifiable, and Des Moines and Wapello Counties were unclassifiable/attainment.


On January 9, 2018, the EPA published the results for the Air Quality Designations for the 2010 Sulfur Dioxide Primary National Ambient Air Quality Standard-Round 3 in the Federal Register. The Utah county of Emery, where PacifiCorp's Hunter and Huntington generation stations are located, was classified as attainment/unclassifiable. The Wyoming counties of Campbell and Lincoln, where PacifiCorp's Wyodak and Naughton generation stations are located, were classified as attainment/unclassifiable. The eastern portion of Sweetwater County, where PacifiCorp's Jim Bridger generation station is located, was classified as attainment/unclassifiable. Converse County, where PacifiCorp's Dave Johnston generation station is located, will not be designated until December 31, 2020.


In December 2012, the EPA finalized more stringent fine particulate matter national ambient air quality standards,NAAQS, reducing the annual standard from 15 micrograms per cubic meter to 12 micrograms per cubic meter and retaining the 24-hour standard at 35 micrograms per cubic meter. The EPA did not set a separate secondary visibility standard, choosing to rely on the existing secondary 24-hour standard to protect against visibility impairment. In December 2014, the EPA issued final area designations for the 2012 fine particulate matter standard. Based on these designations, the areas in which the relevant Registrant operates generating facilities have been classified as "unclassifiable/attainment." Unless additional monitoring suggests otherwise, the relevant Registrant does not anticipate that any impacts of the revised standard will be significant. In December 2020, the EPA finalized its decision to retain, without revision, the existing primary and secondary standards for particulate matter. In June 2020, the EPA proposed a determination of attainment for the 2006 24-hour fine particulate matter for Salt Lake City and Provo serious nonattainment areas. The determination is based upon quality-assured, quality controlled and certified ambient air monitoring data showing that the area has attained the 2006 standard based on the 2017-2019 monitoring. The comment period for the proposal ended in August 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.


In December 2014, the Utah SIP for fine particulate matter was adopted by the Utah Air Quality Board. PacifiCorp's Lake Side, Lake Side 2, Gadsby Steam and Gadsby Peakers generating facilities operate within nonattainment areas for fine particulate matter; however, the SIP did not impose significant new requirements on PacifiCorp's impacted generating facilities, nor did the EPA's comments on the Utah SIP identify requirements for PacifiCorp's existing generating facilities that would have a material impact on its consolidated financial results.


As new, more stringent national ambient air quality standards are adopted, the number of counties designated as nonattainment areas is likely to increase. Businesses operating in newly designated nonattainment counties could face increased regulation and costs to monitor or reduce emissions. For instance, existing major emissions sources may have to install reasonably available control technologies to achieve certain reductions in emissions and undertake additional monitoring, recordkeeping and reporting. The construction or modification of facilities that are sources of emissions could also become more difficult in nonattainment areas. Until new requirements are promulgated and additional monitoring and modeling is conducted, the impacts on the Registrants cannot be determined.

Mercury and Air Toxics StandardsClimate Change


In March 2011,December 2015, an international agreement was negotiated by 195 nations to create a universal framework for coordinated action on climate change in what is referred to as the Paris Agreement. The Paris Agreement reaffirms the goal of limiting global temperature increase well below 2 degrees Celsius, while urging efforts to limit the increase to 1.5 degrees Celsius; establishes commitments by all parties to make nationally determined contributions and pursue domestic measures aimed at achieving the commitments; commits all countries to submit emissions inventories and report regularly on their emissions and progress made in implementing and achieving their nationally determined commitments; and commits all countries to submit new commitments every five years, with the expectation that the commitments will get more aggressive. In the context of the Paris Agreement, the United States agreed to reduce GHG emissions 26% to 28% by 2025 from 2005 levels. After more than 55 countries representing more than 55% of global GHG emissions submitted their ratification documents, the Paris Agreement became effective November 4, 2016. On June 1, 2017, President Trump announced the United States would begin the process of withdrawing from the Paris Agreement. The United States completed its withdrawal from the Paris Agreement on November 4, 2020. President Biden accepted the terms of the climate agreement January 20, 2021, and the United States completed its reentry February 19, 2021.

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GHG Performance Standards

Under the Clean Air Act, the EPA proposedmay establish emissions standards that reflect the degree of emissions reductions achievable through the best technology that has been demonstrated, taking into consideration the cost of achieving those reductions and any non-air quality health and environmental impact and energy requirements. On August 3, 2015, the EPA issued final new source performance standards, establishing a rule that requiresstandard of 1,000 pounds of carbon dioxide per MWh for large natural gas-fueled generating facilities and 1,400 pounds of carbon dioxide per MWh for new coal-fueled generating facilities with the "Best System of Emission Reduction" reflecting highly efficient supercritical pulverized coal facilities with partial carbon capture and sequestration or integrated gasification combined-cycle units that are co-fired with natural gas or pre-combustion slipstream capture of carbon dioxide. The new source performance standards were appealed to reduce mercury emissionsthe D.C. Circuit and other hazardous air pollutants throughoral argument was scheduled for April 17, 2017. However, oral argument was deferred and the establishmentcourt held the case in abeyance for an indefinite period of "Maximum Achievable Control Technology" standards. The final MATS became effective on April 16, 2012, and required thattime. On December 6, 2018, the EPA announced revisions to new source performance standards for new and existingreconstructed coal-fueled generatingunits. EPA proposes to revise carbon dioxide emission limits for new coal-fueled facilities achieve emission standardsto 1,900 pounds per MWh for mercury, acid gasessmall units and other non-mercury hazardous air pollutants. Existing sources were required to comply with2,000 pounds per MWh for large units. The EPA would define the new standards by April 16, 2015 with the potential for individual sources to obtain an extensionbest system of up to one additional year, at the discretion of the Title V permitting authority, to complete installation of controls or for transmission system reliability reasons. The relevant Registrants have completed emission reduction projects to comply with the final rule's standards for acid gasesnew and non-mercury metallic hazardous air pollutants.

MidAmerican Energy retired certain coal-fueled generatingmodified units as the least-cost alternative to complymost efficient demonstrated steam cycle, combined with best operating practices. On January 12, 2021, EPA finalized a rule focused solely on a significant contribution finding for purposes of regulating source categories' GHG emissions. The final rule sets no specific regulatory standards and contains no regulatory text, nor does it address what constitutes the MATS. Walter Scott, Jr. Energy Center Units 1best system of emission reduction for new, modified and 2 were retired in 2015, and George Neal Energy Center Units 1 and 2 were retired in April 2016. A fifth unit, Riverside Generating Station, was limited to natural gas combustion in March 2015.

Numerous lawsuits have been filedreconstructed electric generating units. EPA confirms in the D.C. Circuit challenging"significant contribution" rule that electric generating units remain a listed source category under Clean Air Act Section 111(b), reaching that conclusion through the MATS. introduction of an emissions threshold framework by which a source category is deemed to contribute significantly to dangerous air pollution due to their GHG emissions if the amount of those emissions exceeds 3% of total GHG emissions in the United States. Under this methodology, no other source category would qualify for regulation. The significant contribution rule will take effect 60 days after publication in the Federal Register but is expected to be quickly revisited by the Biden administration. Because the significant contribution rule did not alter the emission limits or technology requirements of the 2015 rule, any new fossil-fueled generating facilities will be required to meet the GHG new source performance standards.
Affordable Clean Energy Rule

In AprilJune 2014, the D.C. Circuit upheldEPA released proposed regulations to address GHG emissions from existing fossil-fueled generating facilities, referred to as the MATS requirements. In November 2014,Clean Power Plan, under Section 111(d) of the United States Supreme Court agreedClean Air Act. The EPA's proposal calculated state-specific emission rate targets to hear the MATS appealbe achieved based on the limited issue"Best System of whetherEmission Reduction." In August 2015, the EPA unreasonably refused to consider costs in determining whether it is appropriate to regulate hazardous air pollutants emitted by electric utilities. Oral argument infinal Clean Power Plan was released, which established the caseBest System of Emission Reduction as including: (a) heat rate improvements; (b) increased utilization of existing combined-cycle natural gas-fueled generating facilities; and (c) increased deployment of new and incremental non-carbon generation placed in-service after 2012. The Clean Power Plan was held before the United States Supreme Court in March 2015, and a decision was issuedstayed by the United States Supreme Court in February 2016 while litigation proceeded. On October 10, 2017, the EPA issued a proposal to repeal the Clean Power Plan, which was intended to achieve an overall reduction in carbon dioxide emissions from existing fossil-fueled electric generating units of 32% below 2005 levels. On June 2015,19, 2019, the EPA repealed the Clean Power Plan and issued the Affordable Clean Energy rule, which reversedfully replaced the Clean Power Plan. In the Affordable Clean Energy rule, the EPA determined that the best system of emissions reduction for existing coal-fueled power plants is limited to actions that can be taken at a point source facility, specifically heat rate improvements and identified a set of candidate technologies and measures that could improve heat rates. Measures taken to meet the standards of performance must be achieved at the source itself. States have until July 2022 to submit compliance plans to the EPA. The Affordable Clean Energy rule was challenged by environmental and health groups in the D.C. Circuit. On January 19, 2021, the D.C. Circuit vacated and remanded the MATS rule to the D.C. Circuit for further action. The United States Supreme Court held that the EPA had acted unreasonably when it deemed cost irrelevant to the decision to regulate generating facilities, and that cost, including costs of compliance, must be considered before deciding whether regulation is necessary and appropriate. The United States Supreme Court's decision did not vacate or stay implementation of the MATS rule. In December 2015, the D.C. Circuit issued an order remanding theAffordable Clean Energy rule to the EPA, without vacatingfinding that the rule. Asrule "rested critically on a result,mistaken reading of the Clean Air Act" that limited the best system of emission reduction to actions taken at a facility. Until the EPA indicates its course of action in response to this decision, the full impacts on the Registrants cannot be determined. PacifiCorp, MidAmerican Energy, Nevada Power and Sierra Pacific have historically pursued cost-effective projects, including plant efficiency improvements, increased diversification of their generating fleets to include deployment of renewable and lower carbon generating resources, and advanced customer energy efficiency programs.

New Source Performance Standards for Methane Emissions

In August 2020, the EPA finalized regulations to rescind standards for methane emissions from the oil and gas sector. The changes eliminate requirements to regulate methane emissions from the production, processing, transmission and storage of oil and gas. The rule was immediately challenged by environmental and tribal groups, as well as numerous states. In January 2021, the D.C. Circuit lifted an administrative stay and allowed the rule to take effect, finding that groups challenging the rule had not met the standard for a long-term stay. Until such time as litigation is exhausted, the relevant Registrants cannot determine whether additional action may be required.
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Regional and State Activities

Several states have promulgated or otherwise participate in state-specific or regional laws or initiatives to report or mitigate GHG emissions. These are expected to impact the relevant Registrant, and include:

In June 2013, Nevada Senate Bill 123 ("SB 123") was signed into law. Among other things, SB 123 and regulations thereunder required Nevada Power to file with the PUCN an emission reduction and capacity replacement plan by May 1, 2014. In May 2014, Nevada Power filed its emissions reduction capacity replacement plan. The plan provided for the retirement or elimination of 300 MWs of coal-fueled generating capacity by December 31, 2014, another 250 MWs of coal-fueled generating capacity by December 31, 2017, and another 250 MWs of coal generating capacity by December 31, 2019, along with replacement of such capacity with a mixture of constructed, acquired or contracted renewable and non-technology specific generating units. The plan also sets forth the expected timeline and costs associated with decommissioning coal-fueled generating units that will be retired or eliminated pursuant to the plan. The PUCN has the authority to approve or modify the emission reduction and capacity replacement plan filed by Nevada Power. The PUCN may approve variations to Nevada Power's resource plans relative to requirements under SB 123. Refer to Nevada Power's Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the ERCR Plan.

Under the authority of California's Global Warming Solutions Act, which includes a series of policies aimed at returning California GHG emissions to 1990 levels by 2020, the California Air Resources Board adopted a GHG cap-and-trade program with an effective date of January 1, 2012; compliance obligations were imposed on entities beginning in 2013. PacifiCorp is subject to the cap-and-trade program as a retail service provider in California and an importer of wholesale energy into California. In 2015, Governor Jerry Brown issued an executive order to reduce emissions to 40% below 1990 levels by 2030 and 80% by 2050. In September 2016, California Senate Bill 32 was signed into law establishing GHG emissions reduction targets of 40% below 1990 levels by 2030.

The states of California, Washington and Oregon have adopted GHG emissions performance standards for base load electricity generating resources. Under the laws in California and Oregon, the emissions performance standards provide that emissions must not exceed 1,100 pounds of carbon dioxide per MWh. In September 2018, the Washington Department of Commerce amended the emissions performance standards to provide that GHG emissions for base load electricity generating resources must not exceed 925 pounds of carbon dioxide per MWh. These GHG emissions performance standards generally prohibit electric utilities from entering into long-term financial commitments (e.g., new ownership investments, upgrades, or new or renewed contracts with a term of five or more years) unless any base load generation supplied under long-term financial commitments comply with the GHG emissions performance standards.

In September 2016, the Washington State Department of Ecology issued a final rule regulating GHG emissions from sources in Washington. The rule regulates GHG including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride beginning in 2017 with three-year compliance periods thereafter (i.e., 2017-2019, 2020-2022, etc.). Under the rule, the Washington State Department of Ecology established GHG emissions reduction pathways for all covered entities. Covered entities may use emission reduction units, which may be traded with other covered entities, to meet their compliance requirements. PacifiCorp's resources that are covered under the rule include the Chehalis generating facility, which is a natural gas combined-cycle plant located in Washington state. PacifiCorp received its baseline emission order on December 17, 2017, which specified the emission reduction requirements for the Chehalis generating facility every three years beginning in 2017. The reduction requirements average 1.7% per year. However, the Washington State Department of Ecology suspended the compliance obligations of the Clean Air Rule after a Thurston County Superior Court judge ruled the state lacks authority to mandate reductions from indirect emitters. On January 16, 2020, the Washington Supreme Court affirmed that the rule limits the applicability of emission standards to actual emitters and cannot be expanded to non-emitters. The court also found that the rule itself is severable, so that the Washington State Department of Ecology may continue to haveenforce the rule as it applies to emitters. The case was remanded for further proceedings. Pending further action by the lower court, the rule itself remains suspended, but entities subject to the rule are required to continue reporting emissions.

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The Regional Greenhouse Gas Initiative, a legal obligationmandatory, market-based effort to cap and reduce power sector GHG emissions in eleven Eastern states, required, beginning in 2009, the reduction of carbon dioxide emissions from the power sector of 10% by 2018. Following a program review in 2012, the nine Regional Greenhouse Gas Initiative states implemented a new 2014 cap which was approximately 45% lower than the 2012-2013 cap. The cap is reduced each year by 2.5% from 2015 to 2020. In December 2017, an updated model rule was released by the Regional Greenhouse Gas Initiative states which includes an additional 30% regional cap reduction between 2020 and 2030.

Renewable Portfolio Standards

Each state's RPS described below could significantly impact the relevant Registrant's consolidated financial results. Resources that meet the qualifying electricity requirements under the MATS ruleeach RPS vary from state to state. Each state's RPS requires some form of compliance reporting and the respective permits issuedrelevant Registrant can be subject to penalties in the event of noncompliance. Each Registrant believes it is in material compliance with all applicable RPS laws and regulations.

In 1983, Iowa became the first state in the United States to adopt a RPS requiring the state utilities to own or to contract for a combined total of 105 MWs of renewable generating capacity and associated energy production. The IUB allocated the 105-MW requirement between the two utilities in Iowa based on each utility's percentage of their combined estimated Iowa retail peak demand in 1990 resulting in MidAmerican Energy being allocated a RPS requirement of 55.2 MWs. The utility must meet its RPS obligation by either owning renewable energy production facilities located in Iowa or entering into long-term contracts to purchase or wheel electricity from renewable production facilities located in the states in which each respective Registrant operatesutility's service area.

Since 1997, NV Energy has been required to comply with a RPS. In November 2020, Nevada voters approved a constitution amendment that requires the MATS rule,state to get at least half its electricity from renewable sources by 2030. Beginning in 2022, the state must get 22% of its electricity from renewable sources. That percentage is increased incrementally over eight years up to the 50% threshold by 2030. The state's previous RPS required utilities to get 25% of their electricity from renewable sources by 2025.

Utah's Energy Resource and Carbon Emission Reduction Initiative provides that, beginning in the year 2025, 20% of adjusted retail electric sales of all Utah utilities be supplied by renewable energy, if it is cost effective. Retail electric sales will be adjusted by deducting the amount of generation from sources that produce zero or reduced carbon emissions, and for sales avoided as a result of energy efficiency and DSM programs. Qualifying renewable energy sources can be located anywhere within the WECC, and RECs can be used.

The Oregon Renewable Energy Act ("OREA") provides a comprehensive renewable energy policy and RPS for Oregon. Subject to certain exemptions and cost limitations established in the law, PacifiCorp and other qualifying electric utilities must meet minimum qualifying electricity requirements for electricity sold to retail customers of at least 5% in 2011 through 2014, 15% in 2015 through 2019, and 20% in 2020 through 2024. In March 2016, Oregon Senate Bill 1547-B ("SB 1547-B"), the Clean Electricity and Coal Transition Plan, was signed into law. SB 1547-B requires coal-fueled resources be eliminated from Oregon's allocation of electricity by January 1, 2030 and increases the current RPS target from 25% in 2025 to 50% by 2040. SB 1547-B also implements new REC banking provisions, as well as the following interim RPS targets: 27% in 2025 through 2029, 35% in 2030 through 2034, 45% in 2035 through 2039, and 50% by 2040 and subsequent years. As required by the OREA, the OPUC has approved an automatic adjustment clause to allow an electric utility, including operatingPacifiCorp, to recover prudently incurred costs of its investments in renewable energy generating facilities and associated transmission costs.

Washington's Energy Independence Act establishes a renewable energy target for qualifying electric utilities, including PacifiCorp. The requirements are 3% of retail sales by January 1, 2012 through 2015, 9% of retail sales by January 1, 2016 through 2019 and 15% of retail sales by January 1, 2020 and each year thereafter. In April 2013, Washington State Senate Bill 5400 ("SB 5400") was signed into law. SB 5400 expands the geographic area in which eligible renewable resources may be located to beyond the Pacific Northwest, allowing renewable resources located in all states served by PacifiCorp to qualify. SB 5400 also provides PacifiCorp with additional flexibility and options to meet Washington's renewable mandates. In May 2019, the state of Washington enacted Senate Bill 5116, the Clean Energy Transformation Act. The legislation, among other things, requires Washington utilities to be carbon neutral by January 1, 2030 and institutes a planning target of 100% non-emitting generation by 2045. Electric utilities must also eliminate from rates coal-fueled resources by December 31, 2025.

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The California RPS required all California retail sellers to procure an average of 20% of retail load from renewable resources by December 31, 2013, 25% by December 31, 2016 and 33% by December 31, 2020. In October 2015, California Senate Bill No. 350 became law and increased the RPS target to 50% by December 31, 2030. The state's RPS was further expanded in September 2018, when California Senate Bill 100 ("SB 100"), the 100 Percent Clean Energy Act of 2018 was signed into law. In addition to requiring retail sellers to meet a RPS target of 60% by 2030, SB 100 enabled a longer-term planning target for 100% of total California retail sales to come from eligible renewable energy resources and zero-carbon resources by December 31, 2045. In December 2011, the CPUC adopted a decision confirming that multi-jurisdictional utilities, such as PacifiCorp, are not subject to the percentage limits within the three product content categories of RPS-eligible resources established by the legislation that have been imposed on other California retail sellers.

Clean Air Act Regulations

The Clean Air Act is a federal law administered by the EPA that provides a framework for protecting and improving the nation's air quality and controlling sources of air emissions. The implementation of new standards is generally outlined in SIPs, which are a collection of regulations, programs and policies to be followed. SIPs vary by state and are subject to public hearings and EPA approval. Some states may adopt additional or more stringent requirements than those implemented by the EPA. The major Clean Air Act programs most directly affecting the Registrants' operations are described below.

National Ambient Air Quality Standards

Under the authority of the Clean Air Act, the EPA sets minimum NAAQS for six principal pollutants, consisting of carbon monoxide, lead, NOx, particulate matter, ozone and SO2, considered harmful to public health and the environment. Areas that achieve the standards, as determined by ambient air quality monitoring, are characterized as being in attainment, while those that fail to meet the standards are designated as being nonattainment areas. Generally, sources of emissions controls or otherwise complyingin a nonattainment area that are determined to contribute to the nonattainment are required to reduce emissions. Currently, with the MATS requirements.


Cross-State Air Pollution Rule

The EPA promulgated an initial rule in March 2005 to reduce emissions of nitrogen oxides and sulfur dioxide, precursors of ozone and particulate matter, from down-wind sourcesexceptions described in the easternfollowing paragraphs, air quality monitoring data indicates that all counties where the relevant Registrant's major emission sources are located are in attainment of the current NAAQS.

On June 4, 2018, EPA published final designations for much of the United States. Relevant to the Registrants, these designations include classifying Yuma County, Arizona; Clark County, Nevada; and the Northern Wasatch Front, Southern Wasatch Front and Duchesne and Uintah counties in Utah as nonattainment-marginal with the 2015 ozone standard. These areas will be required to meet the 2015 standard three years from the August 3, 2018, effective date. All other areas relevant to the Registrants were designated attainment/unclassifiable with this same action. On January 29, 2021, the D.C. Circuit vacated several provisions of the 2018 implementing rules for the 2015 ozone standards for contravening the Clean Air Act. Until the EPA takes final action consistent with this ruling, impacts to the relevant Registrants cannot be determined.

In January 2010, the EPA finalized a one-hour air quality standard for nitrogen dioxide at 100 parts per billion. In February 2012, the EPA published final designations indicating that based on air quality monitoring data, all areas of the country are designated as "unclassifiable/attainment" for the 2010 nitrogen dioxide NAAQS. On April 6, 2018, EPA issued a decision to retain the 2010 nitrogen dioxide NAAQS without revision.

In June 2010, the EPA finalized a new NAAQS for SO2. Under the 2010 rule, areas must meet a one-hour standard of 75 parts per billion utilizing a three-year average. The rule utilizes source modeling in addition to the installation of ambient monitors where SO2 emissions impact populated areas. Attainment designations were due by June 2012; however, citing a lack of sufficient information to make the designations, the EPA did not issue its final designations until July 2013 and determined, at that date, that a portion of Muscatine County, Iowa was in nonattainment for the one-hour SO2 standard. MidAmerican Energy's Louisa coal-fueled generating facility is located just outside of Muscatine County, south of the violating monitor. In its final designation, the EPA indicated that it was not yet prepared to conclude that the emissions from the Louisa coal-fueled generating facility contribute to the monitored violation or to other possible violations, and that in a subsequent round of designations, the EPA will make decisions for areas and sources outside Muscatine County. MidAmerican Energy does not believe a subsequent nonattainment designation will have a material impact on the Louisa coal-fueled generating facility. Although the EPA's July 2013 designations did not impact PacifiCorp's nor the Nevada Utilities' generating facilities, the EPA's assessment of SO2 area designations will continue with the deployment of additional SO2 monitoring networks across the country. On February 25, 2019, EPA issued a decision to retain the 2010 SO2 NAAQS without revision.

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The Sierra Club filed a lawsuit against the EPA in August 2013 with respect to the one-hour SO2 standards and its failure to make certain attainment designations in a timely manner. In March 2015, the United States including Iowa,District Court for the Northern District of California ("Northern District of California") accepted as an enforceable order an agreement between the EPA and Sierra Club to reduce emissionsresolve litigation concerning the deadline for completing the designations. The Northern District of California's order directed the EPA to complete designations in three phases: the first phase by implementing a plan based on a market-based cap-and-trade system, emissions reductions, or both. After numerous appeals,July 2, 2016; the Cross-State Air Pollution Rule ("CSAPR") was promulgated to address interstate transport of sulfur dioxidesecond phase by December 31, 2017; and nitrogen oxides emissions in 27 eastern and Midwestern states.

the final phase by December 31, 2020. The first phase of the rule was implemented January 1, 2015. In November 2015,designations require the EPA releasedto designate two groups of areas: 1) areas that have newly monitored violations of the 2010 SO2 standard; and 2) areas that contain any stationary source that, according to the EPA's data, either emitted more than 16,000 tons of SO2 in 2012 or emitted more than 2,600 tons of SO2 and had an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012 and, as of March 2, 2015, had not been announced for retirement. MidAmerican Energy's George Neal Unit 4 and the Ottumwa Generating Station (in which MidAmerican Energy has a proposed rulemajority ownership interest, but does not operate), are included as units subject to the first phase of the designations, having emitted more than 2,600 tons of SO2 and having an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012. States may submit to the EPA updated recommendations and supporting information for the EPA to consider in making its determinations. Iowa submitted documentation to the EPA in April 2016 supporting its recommendation that would further reduce nitrogen oxides emissionsDes Moines, Wapello and Woodbury Counties be designated as being in 2017. Theattainment of the standard. In July 2016, the EPA's final rule wasdesignations were published in the Federal Register indicating portions of Muscatine County, Iowa were in October 2016. The rule requires additional reductions in nitrogen oxides emissions beginning in May 2017. Onnonattainment with the 2010 SO2 standard, Woodbury County, Iowa was unclassifiable, and Des Moines and Wapello Counties were unclassifiable/attainment.

In December 23, 2016, a lawsuit was filed against2012, the EPA finalized more stringent fine particulate matter NAAQS, reducing the annual standard from 15 micrograms per cubic meter to 12 micrograms per cubic meter and retaining the 24-hour standard at 35 micrograms per cubic meter. The EPA did not set a separate secondary visibility standard, choosing to rely on the existing secondary 24-hour standard to protect against visibility impairment. In December 2014, the EPA issued final area designations for the 2012 fine particulate matter standard. Based on these designations, the areas in which the D.C. Circuit over the final CSAPR "update" rule, which is still pending.

MidAmerican Energy has installed emissions controls at its coal-fueledrelevant Registrant operates generating facilities to comply withhave been classified as "unclassifiable/attainment." Unless additional monitoring suggests otherwise, the CSAPR and may purchase emissions allowances to meet a portion of its compliance obligations. The cost of these allowances is subject to market conditions at the time of purchase and historically has not been material. MidAmerican Energy believes that the controls installed to date are consistent with the reductions to be achieved from implementation of the rule andrelevant Registrant does not anticipate that any impacts of the CSAPR updaterevised standard will be significant. In December 2020, the EPA finalized its decision to retain, without revision, the existing primary and secondary standards for particulate matter. In June 2020, the EPA proposed a determination of attainment for the 2006 24-hour fine particulate matter for Salt Lake City and Provo serious nonattainment areas. The determination is based upon quality-assured, quality controlled and certified ambient air monitoring data showing that the area has attained the 2006 standard based on the 2017-2019 monitoring. The comment period for the proposal ended in August 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.


MidAmerican Energy operates natural gas-fueledIn December 2014, the Utah SIP for fine particulate matter was adopted by the Utah Air Quality Board. PacifiCorp's Lake Side, Lake Side 2, Gadsby Steam and Gadsby Peakers generating facilities in Iowa and BHE Renewables operates natural gas-fueledoperate within nonattainment areas for fine particulate matter; however, the SIP did not impose significant new requirements on PacifiCorp's impacted generating facilities, in Texas, Illinois and New York, which are subject tonor did the CSAPR. However,EPA's comments on the provisions are not anticipated toUtah SIP identify requirements for PacifiCorp's existing generating facilities that would have a material impact on Berkshire Hathaway Energy or MidAmerican Energy. None of PacifiCorp's, Nevada Power's or Sierra Pacific's generating facilities are subject to the CSAPR. However, in a Notice of Data Availability published in the January 6, 2017, Federal Register, the EPA provided preliminary estimates of which upwind states may have linkages to downwind states experiencing ozone levels at or exceeding the 2015 ozone national ambient air quality standard of 70 parts per billion, and, using similar methodology to that in the CSAPR, indicated that Utah and Wyoming could have an obligation under the "good neighbor" provisions of the Clean Air Act to reduce nitrogen oxides emissions.its consolidated financial results.


Regional Haze

The EPA's Regional Haze Rule, finalized in 1999, requires states to develop and implement plans to improve visibility in designated federally protected areas ("Class I areas"). Some of PacifiCorp's coal-fueled generating facilities in Utah, Wyoming, Arizona and Colorado and certain of Nevada Power's and Sierra Pacific's fossil-fueled generating facilities are subject to the Clean Air Visibility Rules. In accordance with the federal requirements, states are required to submit SIPs that address emissions from sources subject to best available retrofit technology ("BART") requirements and demonstrate progress towards achieving natural visibility requirements in Class I areas by 2064.

The state of Utah issued a regional haze SIP requiring the installation of sulfur dioxide, nitrogen oxides and particulate matter controls on Hunter Units 1 and 2, and Huntington Units 1 and 2. In December 2012, the EPA approved the sulfur dioxide portion of the Utah regional haze SIP and disapproved the nitrogen oxides and particulate matter portions. Certain groups appealed the EPA's approval of the sulfur dioxide portion and oral argument was heard before the United States Court of Appeals for the Tenth Circuit ("Tenth Circuit") in March 2014. In October 2014, the Tenth Circuit upheld the EPA's approval of the sulfur dioxide portion of the SIP. The state of Utah and PacifiCorp filed petitions for administrative and judicial review of the EPA's final rule on the BART determinations for the nitrogen oxides and particulate matter portions of Utah's regional haze SIP in March 2013. In May 2014, the Tenth Circuit dismissed the petition on jurisdictional grounds. In addition, and separate from the EPA's approval process and related litigation, the Utah Division of Air Quality completed an alternative BART analysis for Hunter Units 1 and 2, and Huntington Units 1 and 2. The alternative BART analysis and revised regional haze SIP were submitted in June 2015 to the EPA for review and proposed action after a public comment period. In January 2016, the EPA published two alternative proposals to either approve the Utah SIP as written or reject the Utah SIP relating to nitrogen oxides controls and require the installation of selective catalytic reduction ("SCR") controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years. EPA's final action on the Utah regional haze SIP was effective August 4, 2016. The EPA approved in part and disapproved in part the Utah regional haze SIP and issued a federal implementation plan ("FIP") requiring the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years of the effective date of the rule. PacifiCorp and other parties filed requests with the EPA to reconsider and stay that decision, as well as filed motions for stay and petitions for review with the Tenth Circuit asking the court to overturn the EPA's actions. In July 2017, the EPA issued a letter indicating it would reconsider its decision issuing the FIP. In light of the EPA's grant of reconsideration and the EPA's position in the litigation, the Tenth Circuit held the litigation in abeyance and imposed a stay of the compliance obligations of the FIP for the number of days the stay is in effect while the EPA conducts its reconsideration process.

The state of Wyoming issued two regional haze SIPs requiring the installation of sulfur dioxide, nitrogen oxides and particulate matter controls on certain PacifiCorp coal-fueled generating facilities in Wyoming. The EPA approved the sulfur dioxide SIP in December 2012 and the EPA's approval was upheld on appeal by the Tenth Circuit in October 2014. In addition, the EPA initially proposed in June 2012 to disapprove portions of the nitrogen oxides and particulate matter SIP and instead issue a FIP. The EPA withdrew its initial proposed actions on the nitrogen oxides and particulate matter SIP and the proposed FIP, published a re-proposed rule in June 2013, and finalized its determination in January 2014, which aligns more closely with the SIP proposed by the state of Wyoming. The EPA's final action on the Wyoming SIP approved the state's plan to have PacifiCorp install low-nitrogen oxides burners at Naughton Units 1 and 2, SCR controls at Naughton Unit 3 by December 2014, SCR controls at Jim Bridger Units 1 through 4 between 2015 and 2022, and low-nitrogen oxides burners at Dave Johnston Unit 4. The EPA disapproved a portion of the Wyoming SIP and issued a FIP for Dave Johnston Unit 3, where it required the installation of SCR controls by 2019 or, in lieu of installing SCR controls, a commitment to shut down Dave Johnston Unit 3 by 2027, its currently approved depreciable life. The EPA also disapproved a portion of the Wyoming SIP and issued a FIP for the Wyodak coal-fueled generating facility ("Wyodak Facility"), requiring the installation of SCR controls within five years (i.e., by 2019). The EPA action became final on March 3, 2014. PacifiCorp filed an appeal of the EPA's final action on the Wyodak Facility in March 2014. The state of Wyoming also filed an appeal of the EPA's final action, as did the Powder River Basin Resource Council, National Parks Conservation Association and Sierra Club. In September 2014, the Tenth Circuit issued a stay of the March 2019 compliance deadline for the Wyodak Facility, pending further action by the Tenth Circuit in the appeal. A stay remains in place and the case has not yet been set for oral argument. In June 2014, the Wyoming Department of Environmental Quality issued a revised BART permit allowing Naughton Unit 3 to operate on coal through 2017 and providing for natural gas conversion of the unit in 2018; in October 2016, an application was filed with the Wyoming Department of Environmental Quality requesting a revision of the dates for the end of coal firing and the start of gas firing for Naughton Unit 3 to align with the requirements of the Wyoming SIP. The Wyoming Department of Environmental Quality approved a change to the requirements for Naughton Unit 3, extending the requirement to cease coal firing to no later than January 30, 2019, and complete the gas conversion by June 30, 2019. On March 17, 2017, Wyoming Department of Environmental Quality issued an extension to operate the unit as a coal-fueled unit through January 30, 2019. The Wyoming Department of Environmental Quality submitted a proposed revision to the Wyoming SIP, including a change to the Naughton Unit 3 compliance date, to the EPA for approval November 28, 2017.

The state of Arizona issued a regional haze SIP requiring, among other things, the installation of sulfur dioxide, nitrogen oxides and particulate matter controls on Cholla Unit 4. The EPA approved in part, and disapproved in part, the Arizona SIP and issued a FIP for the disapproved portions requiring SCR controls on Cholla Unit 4. PacifiCorp filed an appeal in the United States Court of Appeals for the Ninth Circuit ("Ninth Circuit") regarding the FIP as it relates to Cholla Unit 4, and the Arizona Department of Environmental Quality and other affected Arizona utilities filed separate appeals of the FIP as it relates to their interests. The Ninth Circuit issued an order in February 2015, holding the matter in abeyance while the parties pursued an alternate compliance approach for Cholla Unit 4. The Arizona Department of Environmental Quality's revision of the draft permit and revision to the Arizona regional haze SIP were approved by the EPA through final action published in the Federal Register on March 27, 2017, with an effective date of April 26, 2017. The final action allows Cholla Unit 4 to utilize coal until April 30, 2025 and convert to gas or otherwise cease burning coal by June 30, 2025.

The state of Colorado regional haze SIP requires SCR controls at Craig Unit 2 and Hayden Units 1 and 2, in which PacifiCorp has ownership interests. Each of those regional haze compliance projects are either already in service or currently being constructed. In addition, in February 2015, the state of Colorado finalized an amendment to its regional haze SIP relating to Craig Unit 1, in which PacifiCorp has an ownership interest, to require the installation of SCR controls by 2021. In September 2016, the owners of Craig Units 1 and 2 reached an agreement with state and federal agencies and certain environmental groups that were parties to the previous settlement requiring SCR to retire Unit 1 by December 31, 2025, in lieu of SCR installation, or alternatively to remove the unit from coal-fueled service by August 31, 2021 with an option to convert the unit to natural gas by August 31, 2023, in lieu of SCR installation. The terms of the agreement were approved by the Colorado Air Quality Board in December 2016. The terms of the agreement were incorporated into an amended Colorado regional haze SIP in 2017 and were submitted to the EPA for its review and approval.

Until the EPA takes final action in each state and decisions have been made in the pending appeals, PacifiCorp, cannot fully determine the impacts of the Regional Haze Rule on its respective generating facilities.


The Navajo Generating Station, in which Nevada Power is a joint owner with an 11.3% ownership share, is also a source that is subject to the regional haze BART requirements. In January 2013, the EPA announced a proposed FIP addressing BART and an alternative for the Navajo Generating Station that includes a flexible timeline for reducing nitrogen oxides emissions. The EPA issued a final FIP on August 8, 2014 adopting, with limited changes, the Navajo Generating Station proposal as a "better than BART" determination. Nevada Power filed the ERCR Plan in May 2014 that proposed to eliminate its ownership participation in the Navajo Generating Station in 2019, which was approved by the PUCN. In February 2017, the non-federal owners of the Navajo Generating Station announced the facility will shut down on or before December 23, 2019, unless new owners can be found. All current owners have since approved a lease extension with the Navajo Nation to allow operations to continue through 2019. As of the end of 2017, no viable offers for a new ownership structure were presented. In the event that a new owner is identified, compliance with the FIP, imposing a long-term facility-wide cap on total emissions of nitrogen oxides and alternative operating scenarios such as curtailment or other emission reductions equivalent to installation of selective catalytic reduction on two units in 2030, would be required.

Climate Change


In December 2015, an international agreement was negotiated by 195 nations to create a universal framework for coordinated action on climate change in what is referred to as the Paris Agreement. The Paris Agreement reaffirms the goal of limiting global temperature increase well below 2 degrees Celsius, while urging efforts to limit the increase to 1.5 degrees Celsius; establishes commitments by all parties to make nationally determined contributions and pursue domestic measures aimed at achieving the commitments; commits all countries to submit emissions inventories and report regularly on their emissions and progress made in implementing and achieving their nationally determined commitments; and commits all countries to submit new commitments every five years, with the expectation that the commitments will get more aggressive. In the context of the Paris Agreement, the United States agreed to reduce greenhouse gasGHG emissions 26% to 28% by 2025 from 2005 levels. After more than 55 countries representing more than 55% of global greenhouse gasGHG emissions submitted their ratification documents, the Paris Agreement became effective November 4, 2016. Under the terms of the Paris Agreement, ratifying countries are bound for a three-year period and must provide one-year's notice of their intent to withdraw. On June 1, 2017, President Trump announced the United States would withdrawbegin the process of withdrawing from the Paris Agreement. UnderThe United States completed its withdrawal from the Paris Agreement on November 4, 2020. President Biden accepted the terms of the climate agreement the withdrawal would be effective in November 2020. The cornerstone ofJanuary 20, 2021, and the United States' commitment was the Clean Power Plan which was finalized by the EPA in 2015 but has since been proposed for repeal by the EPA.States completed its reentry February 19, 2021.


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GHG Performance Standards


Under the Clean Air Act, the EPA may establish emissions standards that reflect the degree of emissions reductions achievable through the best technology that has been demonstrated, taking into consideration the cost of achieving those reductions and any non-air quality health and environmental impact and energy requirements. On August 3, 2015, the EPA issued final new source performance standards, establishing a standard of 1,000 pounds of carbon dioxide per MWh for large natural gas-fueled generating facilities and 1,400 pounds of carbon dioxide per MWh for new coal-fueled generating facilities with the "Best System of Emission Reduction" reflecting highly efficient supercritical pulverized coal facilities with partial carbon capture and sequestration or integrated gasification combined-cycle units that are co-fired with natural gas or pre-combustion slipstream capture of carbon dioxide. The new source performance standards were appealed to the D.C. Circuit and oral argument was scheduled for April 17, 2017. However, oral argument was deferred and the court held the case in abeyance for an indefinite period of time. Until such time asOn December 6, 2018, the EPA undertakes further actionannounced revisions to reconsider the new source performance standards for new and reconstructed coal-fueled units. EPA proposes to revise carbon dioxide emission limits for new coal-fueled facilities to 1,900 pounds per MWh for small units and 2,000 pounds per MWh for large units. The EPA would define the best system of emission reduction for new and modified units as the most efficient demonstrated steam cycle, combined with best operating practices. On January 12, 2021, EPA finalized a rule focused solely on a significant contribution finding for purposes of regulating source categories' GHG emissions. The final rule sets no specific regulatory standards and contains no regulatory text, nor does it address what constitutes the best system of emission reduction for new, modified and reconstructed electric generating units. EPA confirms in the "significant contribution" rule that electric generating units remain a listed source category under Clean Air Act Section 111(b), reaching that conclusion through the introduction of an emissions threshold framework by which a source category is deemed to contribute significantly to dangerous air pollution due to their GHG emissions if the amount of those emissions exceeds 3% of total GHG emissions in the United States. Under this methodology, no other source category would qualify for regulation. The significant contribution rule will take effect 60 days after publication in the Federal Register but is expected to be quickly revisited by the Biden administration. Because the significant contribution rule did not alter the emission limits or technology requirements of the court takes action,2015 rule, any new fossil-fueled generating facilities constructed by the relevant Registrants will be required to meet the GHG new source performance standards.
    

Affordable Clean Energy Rule
Clean Power Plan


In June 2014, the EPA released proposed regulations to address GHG emissions from existing fossil-fueled generating facilities, referred to as the Clean Power Plan, under Section 111(d) of the Clean Air Act. The EPA's proposal calculated state-specific emission rate targets to be achieved based on the "Best System of Emission Reduction." In August 2015, the final Clean Power Plan was released, which established the Best System of Emission Reduction as including: (a) heat rate improvements; (b) increased utilization of existing combined-cycle natural gas-fueled generating facilities; and (c) increased deployment of new and incremental non-carbon generation placed in-service after 2012. The compliance period would have begun in 2022, with three interim periods of compliance and with the final goal to be achievedClean Power Plan was stayed by 2030 and was expected to reduce carbon dioxide emissions in the power sector to 32% below 2005 levels by 2030. On February 9, 2016, the United States Supreme Court ordered that the EPA's emission guidelines for existing sources be stayed pending the disposition of the challenges to the rule in the D.C. Circuit and any action on a writ of certiorari before the U.S. Supreme Court. Oral argument was heard before the D.C. Circuit on September 27, 2016. The court has not yet issued its decision.February 2016 while litigation proceeded. On October 10, 2017, the EPA issued a proposal to repeal the Clean Power Plan, andwhich was intended to achieve an overall reduction in carbon dioxide emissions from existing fossil-fueled electric generating units of 32% below 2005 levels. On June 19, 2019, the EPA will take comments on the proposed repeal until April 26, 2018. In addition, the EPA published in the Federal Register an Advance Notice of Proposed Rulemaking on December 28, 2017, seeking public input on, without committing to, a potential replacement rule. The public comment period for the Advance Notice of Proposed Rulemaking is currently scheduled to conclude February 26, 2018. The full impacts of the EPA's recent efforts to repealrepealed the Clean Power Plan are not expectedand issued the Affordable Clean Energy rule, which fully replaced the Clean Power Plan. In the Affordable Clean Energy rule, the EPA determined that the best system of emissions reduction for existing coal-fueled power plants is limited to actions that can be taken at a point source facility, specifically heat rate improvements and identified a set of candidate technologies and measures that could improve heat rates. Measures taken to meet the standards of performance must be achieved at the source itself. States have until July 2022 to submit compliance plans to the EPA. The Affordable Clean Energy rule was challenged by environmental and health groups in the D.C. Circuit. On January 19, 2021, the D.C. Circuit vacated and remanded the Affordable Clean Energy rule to the EPA, finding that the rule "rested critically on a material impactmistaken reading of the Clean Air Act" that limited the best system of emission reduction to actions taken at a facility. Until the EPA indicates its course of action in response to this decision, the full impacts on the Registrants.Registrants cannot be determined. PacifiCorp, MidAmerican Energy, Nevada Power and Sierra Pacific have historically pursued cost-effective projects, including plant efficiency improvements, increased diversification of their generating fleets to include deployment of renewable and lower carbon generating resources, and advanced customer energy efficiency programs.

Notwithstanding the absence of comprehensive climate legislation or regulation, the Registrants have continued to invest in lower- and non-carbon generating resources and to operate in an environmentally responsible manner. In July 2015, BHE signed the American Business Act on Climate pledge, in which BHE pledged to build on the Company's combined investment of more than $15 billion in renewable energy generation under construction and in operation through 2014 by investing up to an additional $15 billion. Components of BHE's pledge, which continue to be implemented, include:
Pursue the construction of an additional 552 MW of new wind-powered generation in Iowa, increasing MidAmerican Energy's generating portfolio to more than 4,000 MW of wind, which was equivalent to an estimated 51 percent of its Iowa customers' annual retail usage in 2017. MidAmerican Energy surpassed its Climate Pledge commitments in 2016 and 2017 and is currently continuing with the construction of an additional 2,000 MW of wind-powered generation in Iowa, of which 334 MW was placed in-service in 2017. The 2,000-MW wind project is expected to be fully complete in late 2019, and by year-end 2020, MidAmerican Energy's annual renewable energy generation is expected to reach a level that is equivalent to more than 90% of its Iowa customers' annual retail usage. MidAmerican Energy owns the largest portfolio of wind-powered generating capacity in the United States among rate-regulated utilities.
Retire more than 75 percent of the Nevada Utilities' coal-fueled generating capacity in Nevada by 2019. In accordance with the ERCR plan filed in May 2014, Nevada Power retired Reid Gardner Units Nos. 1-3 in December 2014 and Reid Gardner Unit No. 4 in March 2017, which represented 300 MW and 257 MW, respectively, of coal-fueled generating capacity in Nevada. Additionally, as part of the ERCR plan filed in May 2014 and approved by the PUCN, Nevada Power anticipates eliminating its ownership participation in the Navajo Generating Station in 2019.
Add more than 1,000 MW of incremental solar and wind capacity through long-term power purchase agreements to PacifiCorp's owned 1,030 MW of wind-powered generating capacity. PacifiCorp owns the second largest portfolio of wind-powered generating capacity in the United States among rate-regulated utilities. PacifiCorp's Climate Pledge commitments were met December 2016. As of December 31, 2017, PacifiCorp's non-carbon generating capacity, owned and contracted, totaled 4,573 MW, which is capable of generating energy equivalent to 24 percent of its retail sales in 2017. In 2017, PacifiCorp announced Energy Vision 2020, which will significantly expand the amount of wind power serving customers by 2020 through a $3 billion investment in repowering its existing wind fleet with larger blades and newer technology; adding at least 1,311 megawatts of new wind resources by the end of 2020; and building transmission in Wyoming to enable additional wind generation.
Invest in transmission infrastructure in the West and Midwest to support the integration of renewable energy onto the grid.
Support and advance the development of markets in the West to optimize the electric grid, lower costs, enhance reliability and more effectively integrate renewable sources.


New federal, regional, stateSource Performance Standards for Methane Emissions

In August 2020, the EPA finalized regulations to rescind standards for methane emissions from the oil and international accords, legislation, regulation, or judicial proceedings limiting GHGgas sector. The changes eliminate requirements to regulate methane emissions could havefrom the production, processing, transmission and storage of oil and gas. The rule was immediately challenged by environmental and tribal groups, as well as numerous states. In January 2021, the D.C. Circuit lifted an administrative stay and allowed the rule to take effect, finding that groups challenging the rule had not met the standard for a material adverse impact onlong-term stay. Until such time as litigation is exhausted, the relevant Registrants the United States and the global economy. Companies and industries with higher GHG emissions, such as utilities with significant coal-fueled generating facilities, will be subject to more direct impacts and greater financial and regulatory risks. The impact is dependent on numerous factors, none of which can be meaningfully quantified at this time. These factors include, but are not limited to, the magnitude and timing of GHG emissions reduction requirements; the design of the requirements; the cost, availability and effectiveness of emissions control technology; the price, distribution method and availability of offsets and allowances used for compliance; government-imposed compliance costs; and the existence and nature of incremental cost recovery mechanisms. Examples of how new requirements may impact the Registrants include:
Additional costscannot determine whether additional action may be incurred to purchase required emissions allowances under any market-based cap-and-trade system in excess of allocations that are received at no cost. These purchases would be necessary until new technologies could be developed and deployed to reduce emissions or lower carbon generation is available;required.
Acquiring and renewing construction and operating permits for new and existing generating facilities may be costly and difficult;
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Additional costs may be incurred to purchase and deploy new generating technologies;

Costs may be incurred to retire existing coal-fueled generating facilities before the end of their otherwise useful lives or to convert them to burn fuels, such as natural gas or biomass, that result in lower emissions;
Operating costs may be higher and generating unit outputs may be lower;
Higher interest and financing costs and reduced access to capital markets may result to the extent that financial markets view climate change and GHG emissions as a greater business risk; and
The relevant Registrant's natural gas pipeline operations, electric transmission and retail sales may be impacted in response to changes in customer demand and requirements to reduce GHG emissions.

The impact of events or conditions caused by climate change, whether from natural processes or human activities, are uncertain and could vary widely, from highly localized to worldwide, and the extent to which a utility's operations may be affected is uncertain. Climate change may cause physical and financial risk through, among other things, sea level rise, changes in precipitation and extreme weather events. Consumer demand for energy may increase or decrease, based on overall changes in weather and as customers promote lower energy consumption through the continued use of energy efficiency programs or other means. Availability of resources to generate electricity, such as water for hydroelectric production and cooling purposes, may also be impacted by climate change and could influence the Registrants' existing and future electricity generating portfolio. These issues may have a direct impact on the costs of electricity production and increase the price customers pay or their demand for electricity.

Regional and State Activities


Several states have promulgated or otherwise participate in state-specific or regional laws or initiatives to report or mitigate GHG emissions. These are expected to impact the relevant Registrant, and include:


In June 2013, Nevada Senate Bill 123 ("SB 123123") was signed into law. Among other things, SB 123 and regulations thereunder requirerequired Nevada Power to file with the PUCN an emission reduction and capacity replacement plan by May 1, 2014. In May 2014, Nevada Power filed its emissions reduction capacity replacement plan. The plan provided for the retirement or elimination of 300 MWMWs of coalcoal-fueled generating capacity by December 31, 2014, another 250 MWMWs of coalcoal-fueled generating capacity by December 31, 2017, and another 250 MWMWs of coal generating capacity by December 31, 2019, along with replacement of such capacity with a mixture of constructed, acquired or contracted renewable and non-technology specific generating units. The plan also sets forth the expected timeline and costs associated with decommissioning coal-firedcoal-fueled generating units that will be retired or eliminated pursuant to the plan. The PUCN has the authority to approve or modify the emission reduction and capacity replacement plan filed by Nevada Power. Given theThe PUCN may recommend and/or approve variations to Nevada Power's resource plans relative to requirements under SB 123,123. Refer to Nevada Power's Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the specific impacts of SB 123 on Nevada Power cannot be determined.ERCR Plan.


Under the authority of California's Global Warming Solutions Act, which includes a series of policies aimed at returning California greenhouse gasGHG emissions to 1990 levels by 2020, the California Air Resources Board adopted a GHG cap-and-trade program with an effective date of January 1, 2012; compliance obligations were imposed on entities beginning in 2013. PacifiCorp is subject to the cap-and-trade program as a retail service provider in California and an importer of wholesale energy into California. In 2015, Governor Jerry Brown issued an executive order to reduce emissions to 40% below 1990 levels by 2030 and 80% by 2050. In September 2016, California Senate Bill 32 was signed into law establishing greenhouse gasGHG emissions reduction targets of 40% below 1990 levels by 2030.


The states of California, Washington and Oregon have adopted GHG emissions performance standards for base load electricity generating resources. Under the laws in California and Oregon, the emissions performance standards provide that emissions must not exceed 1,100 pounds of carbon dioxide per MWh. Effective April 2013, Washington'sIn September 2018, the Washington Department of Commerce amended the emissions performance standards to provide that GHG emissions for base load electricity generating resources must not exceed 970925 pounds of carbon dioxide per MWh. These GHG emissions performance standards generally prohibit electric utilities from entering into long-term financial commitments (e.g., new ownership investments, upgrades, or new or renewed contracts with a term of five or more years) unless any base load generation supplied under long-term financial commitments comply with the GHG emissions performance standards.


Washington and Oregon enacted legislation in May 2007 and August 2007, respectively, establishing goals for the reduction of GHG emissions in their respective states. Washington's goals seek to (a) reduce emissions to 1990 levels by 2020; (b) reduce emissions to 25% below 1990 levels by 2035; and (c) reduce emissions to 50% below 1990 levels by 2050, or 70% below Washington's forecasted emissions in 2050. Oregon's goals seek to (a) cease the growth of Oregon GHG emissions by 2010; (b) reduce GHG levels to 10% below 1990 levels by 2020; and (c) reduce GHG levels to at least 75% below 1990 levels by 2050. Each state's legislation also calls for state government to develop policy recommendations in the future to assist in the monitoring and achievement of these goals.

In September 2016, the Washington State Department of Ecology issued a final rule regulating GHG emissions from sources in Washington. The rule regulates greenhouse gasesGHG including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride beginning in 2017 with three-year compliance periods thereafter (i.e., 2017-2019, 2020-2022, etc.). Under the rule, the Washington State Department of Ecology established GHG emissions reduction pathways for all covered entities. Covered entities may use emission reduction units, which may be traded with other covered entities, to meet their compliance requirements. PacifiCorp's resources that are covered under the rule include the Chehalis generating facility, which is a natural gas combined-cycle plant located in Washington state. PacifiCorp received its baseline emission order on December 17, 2017, which specified the emission reduction requirements for the Chehalis generating facility every three years beginning in 2017. The reduction requirements average 1.7% per year. However, the Washington State Department of Ecology suspended the compliance obligations of the Clean Air Rule after a Thurston County Superior Court judge ruled the state lacks authority to mandate reductions from indirect emitters. Pending further interpretationOn January 16, 2020, the Washington Supreme Court affirmed that the rule limits the applicability of emission standards to actual emitters and cannot be expanded to non-emitters. The court also found that the court’s decision byrule itself is severable, so that the Washington State Department of Ecology may continue to enforce the rule as it applies to emitters. The case was remanded for further proceedings. Pending further action by the lower court, the rule itself remains suspended, but entities subject to the rule are required to continue reporting emissions.

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The Regional Greenhouse Gas Initiative, a mandatory, market-based effort to cap and reduce power sector GHG emissions in ten Northeastern and Mid-Atlanticeleven Eastern states, required, beginning in 2009, the reduction of carbon dioxide emissions from the power sector of 10% by 2018. In May 2011, New Jersey withdrew from participation in the Regional Greenhouse Gas Initiative. Following a program review in 2012, the nine Regional Greenhouse Gas Initiative states implemented a new 2014 cap which was approximately 45% lower than the 2012-2013 cap. The cap is reduced each year by 2.5% from 2015 to 2020. As called for in the 2012 program review, a program review was initiated for 2016 and continues through 2017 with the expectation that states will implement program changes in the fourth control period from 2018 to 2020. In December 2017, an updated model rule was released by the Regional Greenhouse Gas Initiative states which includes an additional 30% regional cap reduction between 2020 and 2030.


GHG Litigation

Each Registrant closely monitors ongoing environmental litigation applicable to its respective operations. Numerous lawsuits have been unsuccessfully pursued against the industry that attempt to link GHG emissions to public or private harm. The lower courts initially refrained from adjudicating the cases under the "political question" doctrine, because of their inherently political nature. These cases have typically been appealed to federal appellate courts and, in certain circumstances, to the United States Supreme Court. In the U.S. Supreme Court's 2011 decision in the case of American Electric Power Co., Inc., et al. v. Connecticut et al., the court addressed the question of whether federal common law nuisance claims could be maintained against certain electric power companies' for their GHG emissions and require the setting of an emissions cap for the emitters. The court held that the Clean Air Act and the EPA actions it authorizes displace any federal common law right to seek abatement of carbon dioxide emissions from fossil-fuel-fired power plants. Recent efforts by the EPA to repeal the Clean Power Plan could increase the filing of common law nuisance lawsuits against emitters of GHG. Adverse rulings in GHG-related cases could result in increased or changed regulations and could increase costs for GHG emitters, including the Registrants' generating facilities.

The GHG rules, changes to those rules, and the Registrants' compliance requirements are subject to potential outcomes from proceedings and litigation challenging the rules.


Renewable Portfolio Standards


Each state's RPS described below could significantly impact the relevant Registrant's consolidated financial results. Resources that meet the qualifying electricity requirements under each RPS vary from state to state. Each state's RPS requires some form of compliance reporting and the relevant Registrant can be subject to penalties in the event of noncompliance. Each Registrant believes it is in material compliance with all applicable RPS laws and regulations.


In 1983, Iowa became the first state in the United States to adopt a RPS requiring the state utilities to own or to contract for a combined total of 105 MWs of renewable generating capacity and associated energy production. The IUB allocated the 105-MW requirement between the two utilities in Iowa based on each utility's percentage of their combined estimated Iowa retail peak demand in 1990 resulting in MidAmerican Energy being allocated a RPS requirement of 55.2 MWs. The utility must meet its RPS obligation by either owning renewable energy production facilities located in Iowa or entering into long-term contracts to purchase or wheel electricity from renewable production facilities located in the utility's service area.

Since 1997, NV Energy has been required to comply with a RPS. Current lawIn November 2020, Nevada voters approved a constitution amendment that requires the Nevada Utilitiesstate to meet 18%get at least half its electricity from renewable sources by 2030. Beginning in 2022, the state must get 22% of its electricity from renewable sources. That percentage is increased incrementally over eight years up to the 50% threshold by 2030. The state's previous RPS required utilities to get 25% of their energy requirements withelectricity from renewable resources for 2014, 20% for 2015 through 2019, 22% for 2020 and 2024, and 25% for 2025 and thereafter. The RPS also requires 5% of the portfolio requirement come from solar resources through 2015 and increasing to 6% in 2016. Nevada law also permits energy efficiency measures to be used to satisfy a portion of the RPS through 2025, subject to certain limitations.sources by 2025.


Utah's Energy Resource and Carbon Emission Reduction Initiative provides that, beginning in the year 2025, 20% of adjusted retail electric sales of all Utah utilities be supplied by renewable energy, if it is cost effective. Retail electric sales will be adjusted by deducting the amount of generation from sources that produce zero or reduced carbon emissions, and for sales avoided as a result of energy efficiency and DSM programs. Qualifying renewable energy sources can be located anywhere within the WECC, and renewable energy creditsRECs can be used.


The Oregon Renewable Energy Act ("OREA") provides a comprehensive renewable energy policy and RPS for Oregon. Subject to certain exemptions and cost limitations established in the law, PacifiCorp and other qualifying electric utilities must meet minimum qualifying electricity requirements for electricity sold to retail customers of at least 5% in 2011 through 2014, 15% in 2015 through 2019, and 20% in 2020 through 2024. In March 2016, Oregon Senate Bill No. 1547-B ("SB 1547-B"), the Clean Electricity and Coal Transition Plan, was signed into law. Senate Bill No.SB 1547-B requires that coal-fueled resources arebe eliminated from Oregon's allocation of electricity by January 1, 2030 and increases the current RPS target from 25% in 2025 to 50% by 2040. Senate Bill No.SB 1547-B also implements new REC banking provisions, as well as the following interim RPS targets: 27% in 2025 through 2029, 35% in 2030 through 2034, 45% in 2035 through 2039, and 50% by 2040 and subsequent years. As required by the OREA, the OPUC has approved an automatic adjustment clause to allow an electric utility, including PacifiCorp, to recover prudently incurred costs of its investments in renewable energy generating facilities and associated transmission costs.


Washington's Energy Independence Act establishes a renewable energy target for qualifying electric utilities, including PacifiCorp. The requirements are 3% of retail sales by January 1, 2012 through 2015, 9% of retail sales by January 1, 2016 through 2019 and 15% of retail sales by January 1, 2020 and each year thereafter. In April 2013, Washington State Senate Bill No. 5400 ("SB 5400") was signed into law. SB 5400 expands the geographic area in which eligible renewable resources may be located to beyond the Pacific Northwest, allowing renewable resources located in all states served by PacifiCorp to qualify. SB 5400 also provides PacifiCorp with additional flexibility and options to meet Washington's renewable mandates. In May 2019, the state of Washington enacted Senate Bill 5116, the Clean Energy Transformation Act. The legislation, among other things, requires Washington utilities to be carbon neutral by January 1, 2030 and institutes a planning target of 100% non-emitting generation by 2045. Electric utilities must also eliminate from rates coal-fueled resources by December 31, 2025.



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The California RPS required all California retail sellers to procure an average of 20% of retail load from renewable resources by December 31, 2013, 25% by December 31, 2016 and 33% by December 31, 2020. In October 2015, California Senate Bill No. 350 was signed intobecame law whichand increased the current RPS requirementtarget to 40% by December 31, 2024, 45% by December 31, 2027 and 50% by December 31, 2030. The state's RPS was further expanded in September 2018, when California Senate Bill 100 ("SB 100"), the 100 Percent Clean Energy Act of 2018 was signed into law. In addition to requiring retail sellers to meet a RPS target of 60% by 2030, SB 100 enabled a longer-term planning target for 100% of total California retail sales to come from eligible renewable energy resources and zero-carbon resources by December 31, 2045. In December 2011, the CPUC adopted a decision confirming that multi-jurisdictional utilities, such as PacifiCorp, are not subject to the percentage limits within the three product content categories of RPS-eligible resources established by the legislation that have been imposed on other California retail sellers.


Clean Air Act Regulations

The Clean Air Act is a federal law administered by the EPA that provides a framework for protecting and improving the nation's air quality and controlling sources of air emissions. The implementation of new standards is generally outlined in SIPs, which are a collection of regulations, programs and policies to be followed. SIPs vary by state and are subject to public hearings and EPA approval. Some states may adopt additional or more stringent requirements than those implemented by the EPA. The major Clean Air Act programs most directly affecting the Registrants' operations are described below.

National Ambient Air Quality Standards

Under the authority of the Clean Air Act, the EPA sets minimum NAAQS for six principal pollutants, consisting of carbon monoxide, lead, NOx, particulate matter, ozone and SO2, considered harmful to public health and the environment. Areas that achieve the standards, as determined by ambient air quality monitoring, are characterized as being in attainment, while those that fail to meet the standards are designated as being nonattainment areas. Generally, sources of emissions in a nonattainment area that are determined to contribute to the nonattainment are required to reduce emissions. Currently, with the exceptions described in the following paragraphs, air quality monitoring data indicates that all counties where the relevant Registrant's major emission sources are located are in attainment of the current NAAQS.

On June 4, 2018, EPA published final designations for much of the United States. Relevant to the Registrants, these designations include classifying Yuma County, Arizona; Clark County, Nevada; and the Northern Wasatch Front, Southern Wasatch Front and Duchesne and Uintah counties in Utah as nonattainment-marginal with the 2015 ozone standard. These areas will be required to meet the 2015 standard three years from the August 3, 2018, effective date. All other areas relevant to the Registrants were designated attainment/unclassifiable with this same action. On January 29, 2021, the D.C. Circuit vacated several provisions of the 2018 implementing rules for the 2015 ozone standards for contravening the Clean Air Act. Until the EPA takes final action consistent with this ruling, impacts to the relevant Registrants cannot be determined.

In January 2010, the EPA finalized a one-hour air quality standard for nitrogen dioxide at 100 parts per billion. In February 2012, the EPA published final designations indicating that based on air quality monitoring data, all areas of the country are designated as "unclassifiable/attainment" for the 2010 nitrogen dioxide NAAQS. On April 6, 2018, EPA issued a decision to retain the 2010 nitrogen dioxide NAAQS without revision.

In June 2010, the EPA finalized a new NAAQS for SO2. Under the 2010 rule, areas must meet a one-hour standard of 75 parts per billion utilizing a three-year average. The rule utilizes source modeling in addition to the installation of ambient monitors where SO2 emissions impact populated areas. Attainment designations were due by June 2012; however, citing a lack of sufficient information to make the designations, the EPA did not issue its final designations until July 2013 and determined, at that date, that a portion of Muscatine County, Iowa was in nonattainment for the one-hour SO2 standard. MidAmerican Energy's Louisa coal-fueled generating facility is located just outside of Muscatine County, south of the violating monitor. In its final designation, the EPA indicated that it was not yet prepared to conclude that the emissions from the Louisa coal-fueled generating facility contribute to the monitored violation or to other possible violations, and that in a subsequent round of designations, the EPA will make decisions for areas and sources outside Muscatine County. MidAmerican Energy does not believe a subsequent nonattainment designation will have a material impact on the Louisa coal-fueled generating facility. Although the EPA's July 2013 designations did not impact PacifiCorp's nor the Nevada Utilities' generating facilities, the EPA's assessment of SO2 area designations will continue with the deployment of additional SO2 monitoring networks across the country. On February 25, 2019, EPA issued a decision to retain the 2010 SO2 NAAQS without revision.

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The Sierra Club filed a lawsuit against the EPA in August 2013 with respect to the one-hour SO2 standards and its failure to make certain attainment designations in a timely manner. In March 2015, the United States District Court for the Northern District of California ("Northern District of California") accepted as an enforceable order an agreement between the EPA and Sierra Club to resolve litigation concerning the deadline for completing the designations. The Northern District of California's order directed the EPA to complete designations in three phases: the first phase by July 2, 2016; the second phase by December 31, 2017; and the final phase by December 31, 2020. The first phase of the designations require the EPA to designate two groups of areas: 1) areas that have newly monitored violations of the 2010 SO2 standard; and 2) areas that contain any stationary source that, according to the EPA's data, either emitted more than 16,000 tons of SO2 in 2012 or emitted more than 2,600 tons of SO2 and had an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012 and, as of March 2, 2015, had not been announced for retirement. MidAmerican Energy's George Neal Unit 4 and the Ottumwa Generating Station (in which MidAmerican Energy has a majority ownership interest, but does not operate), are included as units subject to the first phase of the designations, having emitted more than 2,600 tons of SO2 and having an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012. States may submit to the EPA updated recommendations and supporting information for the EPA to consider in making its determinations. Iowa submitted documentation to the EPA in April 2016 supporting its recommendation that Des Moines, Wapello and Woodbury Counties be designated as being in attainment of the standard. In July 2016, the EPA's final designations were published in the Federal Register indicating portions of Muscatine County, Iowa were in nonattainment with the 2010 SO2 standard, Woodbury County, Iowa was unclassifiable, and Des Moines and Wapello Counties were unclassifiable/attainment.

In December 2012, the EPA finalized more stringent fine particulate matter NAAQS, reducing the annual standard from 15 micrograms per cubic meter to 12 micrograms per cubic meter and retaining the 24-hour standard at 35 micrograms per cubic meter. The EPA did not set a separate secondary visibility standard, choosing to rely on the existing secondary 24-hour standard to protect against visibility impairment. In December 2014, the EPA issued final area designations for the 2012 fine particulate matter standard. Based on these designations, the areas in which the relevant Registrant operates generating facilities have been classified as "unclassifiable/attainment." Unless additional monitoring suggests otherwise, the relevant Registrant does not anticipate that any impacts of the revised standard will be significant. In December 2020, the EPA finalized its decision to retain, without revision, the existing primary and secondary standards for particulate matter. In June 2020, the EPA proposed a determination of attainment for the 2006 24-hour fine particulate matter for Salt Lake City and Provo serious nonattainment areas. The determination is based upon quality-assured, quality controlled and certified ambient air monitoring data showing that the area has attained the 2006 standard based on the 2017-2019 monitoring. The comment period for the proposal ended in August 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.

In December 2014, the Utah SIP for fine particulate matter was adopted by the Utah Air Quality Board. PacifiCorp's Lake Side, Lake Side 2, Gadsby Steam and Gadsby Peakers generating facilities operate within nonattainment areas for fine particulate matter; however, the SIP did not impose significant new requirements on PacifiCorp's impacted generating facilities, nor did the EPA's comments on the Utah SIP identify requirements for PacifiCorp's existing generating facilities that would have a material impact on its consolidated financial results.

Mercury and Air Toxics Standards

In March 2011, the EPA proposed a rule that requires coal-fueled generating facilities to reduce mercury emissions and other hazardous air pollutants through the establishment of "Maximum Achievable Control Technology" standards. The final MATS became effective on April 16, 2012 and required that new and existing coal-fueled generating facilities achieve emission standards for mercury, acid gases and other non-mercury hazardous air pollutants. Existing sources were required to comply with the new standards by April 16, 2015 with the potential for individual sources to obtain an extension of up to one additional year, at the discretion of the Title V permitting authority, to complete installation of controls or for transmission system reliability reasons. The relevant Registrants have completed emission reduction projects to comply with the final rule's standards for acid gases and non-mercury metallic hazardous air pollutants.

MidAmerican Energy retired certain coal-fueled generating units as the least-cost alternative to comply with the MATS. Walter Scott, Jr. Energy Center Units 1 and 2 were retired in 2015, and George Neal Energy Center Units 1 and 2 were retired in April 2016. A fifth unit, Riverside Generating Station, was limited to natural gas combustion in March 2015.


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Numerous lawsuits have been filed in the D.C. Circuit challenging the MATS. In April 2014, the D.C. Circuit upheld the MATS requirements. In November 2014, the United States Supreme Court agreed to hear the MATS appeal on the limited issue of whether the EPA unreasonably refused to consider costs in determining whether it is appropriate to regulate hazardous air pollutants emitted by electric utilities. Oral argument in the case was held before the United States Supreme Court in March 2015, and a decision was issued by the United States Supreme Court in June 2015, which reversed and remanded the MATS rule to the D.C. Circuit for further action. The United States Supreme Court held that the EPA had acted unreasonably when it deemed cost irrelevant to the decision to regulate generating facilities, and that cost, including costs of compliance, must be considered before deciding whether regulation is necessary and appropriate. The United States Supreme Court's decision did not vacate or stay implementation of the MATS rule. In December 2015, the D.C. Circuit issued an order remanding the rule to the EPA, without vacating the rule. As a result, the relevant Registrants continue to have a legal obligation under the MATS rule and the respective permits issued by the states in which each respective Registrant operates to comply with the MATS rule, including operating all emissions controls or otherwise complying with the MATS requirements.

In December 2018, the EPA issued a proposed revised supplemental cost finding for the MATS, as well as the required risk and technology review under Clean Air Act Section 112. The EPA proposed to determine that it is not appropriate and necessary to regulate hazardous air pollutant emissions from power plants under Section 112; however, the EPA proposed to retain the emission standards and other requirements of the MATS rule, because the EPA did not propose to remove coal- and oil-fueled power plants from the list of sources regulated under Section 112. In May 2020, the EPA published its decision to repeal the appropriate and necessary findings in the MATS rule and retain the overall emission standards. The rule took effect in July 2020. A number of petitions for review were filed in the D.C. Circuit by parties challenging and supporting the EPA's decision to rescind the appropriate and necessary finding. Until litigation over the rule is exhausted, the relevant Registrants cannot fully determine the impacts of the changes to the MATS rule.

In March 2020, the D.C. Circuit issued an opinion in Chesapeake Climate Action Network v. EPA regarding consolidated challenges to the EPA's startup and shutdown provisions contained in the 2012 MATS rule. The MATS rule's provisions governing startup and shutdown require electric generating units comply with work practice standards as opposed to numerical limits during these periods. The EPA denied petitions for reconsideration of these provisions in 2016 and environmentalists challenged this denial. The D.C. Circuit vacated the reconsideration denials, remanding the petition to the EPA for further action. The court did not make a determination on the merits of the arguments concerning the EPA's legal authority to set work practice standards. The existing work practice standards and the alternate definition for when startup ends continue to be applicable. Until the EPA finalizes action to respond to the court's order, the relevant Registrants cannot fully determine the impacts of the remand.

Cross-State Air Pollution Rule

The EPA promulgated an initial rule in March 2005 to reduce emissions of NOx and SO2, precursors of ozone and particulate matter, from down-wind sources in the eastern United States, including Iowa, to reduce emissions by implementing a plan based on a market-based cap-and-trade system, emissions reductions, or both. After numerous appeals, the CSAPR was promulgated to address interstate transport of SO2 and NOx emissions in 27 eastern and Midwestern states.

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The first phase of the rule was implemented January 1, 2015. In November 2015, the EPA released a proposed rule that would further reduce NOx emissions in 2017. The final "CSAPR Update Rule" was published in the Federal Register in October 2016 and required additional reductions in NOx emissions beginning in May 2017. On December 6, 2018, EPA finalized a rule to close out the CSAPR, having determined that the CSAPR Update for the 2008 ozone NAAQS fully addressed Clean Air Act interstate transport obligations of 20 eastern states. EPA determined that 2023 is an appropriate future analytic year to evaluate remaining good neighbor obligations and that there will be no remaining nonattainment or maintenance receptors with respect to the 2008 ozone NAAQS in the eastern United States in that year. Accordingly, the 20 CSAPR Update-affected states would not contribute significantly to nonattainment in, or interfere with maintenance of, any other state with regard to the 2008 ozone NAAQS. Both the CSAPR Update and the CSAPR Close-Out rules were challenged in the D.C. Circuit Court. The D.C. Circuit ruled September 13, 2019, that because the EPA allowed upwind States to continue to significantly contribute to downwind air quality problems beyond statutory deadlines, the CSAPR Update Rule provided only a partial remedy that did not fully address interstate ozone transport, and remanded the CSAPR Update Rule back to the EPA. The D.C. Circuit Court issued an opinion October 1, 2019, finding that because the CSAPR Close-Out Rule relied on the same faulty reasoning as the CSAPR Update rule, the CSAPR Close-Out Rule must be vacated. On October 15, 2020, the EPA proposed to tighten caps on emissions of NOx from power plants in 12 states in the CSAPR trading program in response to the D.C. Circuit's decision to vacate the CSAPR Update rule. The rule is intended to fully resolve 21 upwind states' remaining good neighbor obligations under the 2008 ozone NAAQS. Additional emissions reductions are required at power plants in 12 states, including Illinois; the EPA predicts that emissions from the remaining nine states, including Iowa and Texas, will not significantly contribute to downwind states' ability to attain or maintain the ozone standard. The EPA accepted comment on the proposal through December 15, 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.

The CSAPR provisions are not anticipated to have a material impact on the Registrants. MidAmerican Energy operates natural gas-fueled generating facilities in Iowa and BHE Renewables operates natural gas-fueled generating facilities in Texas, Illinois and New York, which are subject to the CSAPR. MidAmerican Energy has installed emissions controls at its coal-fueled generating facilities to comply with the CSAPR and may purchase emissions allowances to meet a portion of its compliance obligations. The cost of these allowances is subject to market conditions at the time of purchase and historically has not been material. MidAmerican Energy believes that the controls installed to date are consistent with the reductions to be achieved from implementation of the rule. None of PacifiCorp's, Nevada Power's or Sierra Pacific's generating facilities are subject to the CSAPR. However, in a Notice of Data Availability published in the January 6, 2017, Federal Register, the EPA provided preliminary estimates of which upwind states may have linkages to downwind states experiencing ozone levels at or exceeding the 2015 ozone NAAQS of 70 parts per billion, and, using similar methodology to that in the CSAPR, indicated that Utah and Wyoming could have an obligation under the "good neighbor" provisions of the Clean Air Act to reduce NOx emissions. Until such time as a rule is finalized, the relevant Registrants cannot determine whether additional action may be required.

Regional Haze

The EPA's Regional Haze Rule, finalized in 1999, requires states to develop and implement plans to improve visibility in designated federally protected areas ("Class I areas"). Some of PacifiCorp's coal-fueled generating facilities in Utah, Wyoming, Arizona and Colorado and certain of Nevada Power's and Sierra Pacific's fossil-fueled generating facilities are subject to the Clean Air Visibility Rules. In accordance with the federal requirements, states are required to submit SIPs that address emissions from sources subject to BART requirements and demonstrate progress towards achieving natural visibility requirements in Class I areas by 2064.

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The state of Utah issued a regional haze SIP requiring the installation of SO2, NOx and particulate matter controls on Hunter Units 1 and 2, and Huntington Units 1 and 2. In December 2012, the EPA approved the SO2 portion of the Utah regional haze SIP and disapproved the NOx and particulate matter portions. Subsequently, the Utah Division of Air Quality completed an alternative BART analysis for Hunter Units 1 and 2, and Huntington Units 1 and 2. In January 2016, the EPA published two alternative proposals to either approve the Utah SIP as written or reject the Utah SIP relating to NOx controls and require the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years. EPA's final action on the Utah regional haze SIP was effective August 4, 2016. The EPA approved in part and disapproved in part the Utah regional haze SIP and issued a federal implementation plan ("FIP") requiring the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years of the effective date of the rule. PacifiCorp and other parties filed requests with the EPA to reconsider and stay that decision, as well as filed motions for stay and petitions for review with the Tenth Circuit Court of Appeals ("Tenth Circuit") asking the court to overturn the EPA's actions. In July 2017, the EPA issued a letter indicating it would reconsider its FIP decision. In light of the EPA's grant of reconsideration and the EPA's position in the litigation, the Tenth Circuit held the litigation in abeyance and imposed a stay of the compliance obligations of the FIP for the number of days the stay is in effect while the EPA conducts its reconsideration process. To support the reconsideration, PacifiCorp undertook additional air quality modeling using the Comprehensive Air Quality Model with Extensions ("CAMX") dispersion model. On January 14, 2019, the state of Utah submitted a SIP revision to the EPA, which includes the updated modeling information and additional analysis. On June 24, 2019, the Utah Air Quality Board unanimously voted to approve the Utah regional haze SIP revision, which incorporates a BART alternative into Utah's regional haze SIP. The BART alternative makes the shutdown of PacifiCorp's Carbon plant enforceable under the SIP and removes the requirement to install SCR technology on Hunter Units 1 and 2 and Huntington Units 1 and 2. The Utah Division of Air Quality submitted the SIP revision to the EPA for approval at the end of 2019. In January 2020, the EPA published its proposed approval of the Utah Regional Haze SIP Alternative, which makes the shutdown of the Carbon plant federally enforceable and adopts as BART the existing NOx controls and emission limits on the Hunter and Huntington plants. The proposed approval withdraws the FIP requirements to install SCR on Hunter Units 1 and 2 and Huntington Units 1 and 2. The EPA released the final rule approving the Utah Regional Haze SIP Alternative on October 28, 2020. With the approval, the EPA also finalized its withdrawal of the FIP requirements for the Hunter and Huntington plants. The Utah Regional Haze SIP Alternative took effect December 28, 2020. On January 11, 2021, the Tenth Circuit dismissed the Utah regional haze petitions on the basis of the final rule approved Utah's revised SIP and withdrawing the EPA's FIP. On January 19, 2021, Heal Utah, National Parks Conservation Association, Sierra Club and Utah Physicians for a Healthy Environment filed a petition for review of the Utah Regional Haze SIP Alternative in the Tenth Circuit.
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The state of Wyoming issued two regional haze SIPs requiring the installation of SO2, NOx and particulate matter controls on certain PacifiCorp coal-fueled generating facilities in Wyoming. The EPA approved the SO2 SIP in December 2012 and the EPA's approval was upheld on appeal by the Tenth Circuit in October 2014. In addition, the EPA initially proposed in June 2012 to disapprove portions of the NOx and particulate matter SIP and instead issue a FIP. The EPA withdrew its initial proposed actions on the NOx and particulate matter SIP and the proposed FIP, published a re-proposed rule in June 2013, and finalized its determination in January 2014, which aligns more closely with the SIP proposed by the state of Wyoming. The EPA's final action on the Wyoming SIP approved the state's plan to have PacifiCorp install low-NOx burners at Naughton Units 1 and 2, SCR controls at Naughton Unit 3 by December 2014, SCR controls at Jim Bridger Units 1 through 4 between 2015 and 2022, and low-NOx burners at Dave Johnston Unit 4. The EPA disapproved a portion of the Wyoming SIP and issued a FIP for Dave Johnston Unit 3, where it required the installation of SCR controls by 2019 or, in lieu of installing SCR controls, a commitment to shut down Dave Johnston Unit 3 by 2027, its currently approved depreciable life. The EPA also disapproved a portion of the Wyoming SIP and issued a FIP for the Wyodak coal-fueled generating facility, requiring the installation of SCR controls within five years (i.e., by 2019). The EPA action became final on March 3, 2014. PacifiCorp filed an appeal of the EPA's final action on Wyodak in March 2014. The state of Wyoming also filed an appeal of the EPA's final action, as did the Powder River Basin Resource Council, National Parks Conservation Association and Sierra Club. In September 2014, the Tenth Circuit issued a stay of the March 2019 compliance deadline for Wyodak, pending further action by the Tenth Circuit in the appeal. The EPA, U.S. Department of Justice, state of Wyoming and PacifiCorp executed a settlement agreement December 16, 2020, removing the requirement to install SCR in lieu of monthly and annual NOx emissions limits. The settlement agreement is subject to a comment period which runs through March 5, 2021. Litigation in the Tenth Circuit remains stayed pending finalization of the settlement agreement. In June 2014, the Wyoming Department of Environmental Quality issued a revised BART permit allowing Naughton Unit 3 to operate on coal through 2017 and providing for natural gas conversion of the unit in 2018. In 2017, the department approved an extension of the compliance date for Naughton Unit 3 to align with the requirements of the Wyoming SIP extending the requirement to cease coal firing to no later than January 30, 2019. The EPA issued final approval of the Wyoming SIP, including the Naughton Unit 3 gas conversion on March 21, 2019. PacifiCorp removed the unit from coal-fueled service on January 30, 2019, and its 2019 IRP Action Plan incorporates completion of the gas conversion, including all required regulatory notices and filings, by the end of 2020. On February 5, 2019, PacifiCorp submitted a reasonable progress reassessment permit application and reasonable progress determination for Jim Bridger Units 1 and 2, seeking a rescission of the December 2017 permit requiring the installation of SCR, to be replaced with permit imposing plant-wide emission limits to achieve better modeled visibility, fewer overall environmental impacts and lower costs of compliance. In May 2020, the Wyoming Air Quality Division issued a permit approving PacifiCorp's monthly and annual NOx and SO2 emission limits on the four Jim Bridger units and submitted a regional haze SIP revision to the EPA. The revised SIP grants approval of PacifiCorp's Jim Bridger reasonable progress reassessment application and incorporates PacifiCorp's proposed emission limits in lieu of the requirement to install SCR systems on Jim Bridger Units 1 and 2. The EPA is reviewing the SIP revisions.

The state of Arizona issued a regional haze SIP requiring, among other things, the installation of SO2, NOx and particulate matter controls on Cholla Unit 4. The EPA approved in part, and disapproved in part, the Arizona SIP and issued a FIP for the disapproved portions requiring SCR controls on Cholla Unit 4. PacifiCorp filed an appeal in the United States Court of Appeals for the Ninth Circuit ("Ninth Circuit") regarding the FIP as it relates to Cholla Unit 4, and the Arizona Department of Environmental Quality and other affected Arizona utilities filed separate appeals of the FIP as it relates to their interests. The Ninth Circuit issued an order in February 2015, holding the matter in abeyance while the parties pursued an alternate compliance approach for Cholla Unit 4. The Arizona Department of Environmental Quality's revision of the draft permit and revision to the Arizona regional haze SIP were approved by the EPA through final action published in the Federal Register on March 27, 2017, with an effective date of April 26, 2017. The final action allows Cholla Unit 4 to utilize coal until April 30, 2025 and convert to gas or otherwise cease burning coal by June 30, 2025. Retirement of Cholla Unit 4 was completed in December 2020.

The state of Colorado regional haze SIP requires SCR controls at Craig Unit 2 and Hayden Units 1 and 2, in which PacifiCorp has ownership interests. Each of those regional haze compliance projects are either already in service or currently being constructed. In addition, in February 2015, the state of Colorado finalized an amendment to its regional haze SIP relating to Craig Unit 1, in which PacifiCorp has an ownership interest, to require the installation of SCR controls by 2021. In September 2016, the owners of Craig Units 1 and 2 reached an agreement with state and federal agencies and certain environmental groups that were parties to the previous settlement requiring SCR to retire Unit 1 by December 31, 2025, in lieu of SCR installation, or alternatively to remove the unit from coal-fueled service by August 31, 2021 with an option to convert the unit to natural gas by August 31, 2023, in lieu of SCR installation. The terms of the agreement were approved by the Colorado Air Quality Board in December 2016, incorporated into an amended Colorado regional haze SIP in 2017 and approved by the EPA in August 2018. PacifiCorp identified a December 31, 2025, retirement date for Craig Unit 1 in its 2017 and 2019 IRPs.

Until the EPA takes final action in each state and decisions have been made in the pending appeals, PacifiCorp cannot fully determine the impacts of the Regional Haze Rule on its respective generating facilities.
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Water Quality Standards


The federal Water Pollution Control Act ("Clean Water Act") establishes the framework for maintaining and improving water quality in the United States through a program that regulates, among other things, discharges to and withdrawals from waterways. The Clean Water Act requires that cooling water intake structures reflect the "best technology available for minimizing adverse environmental impact" to aquatic organisms. After significant litigation, the EPA released a proposed rule under §316(b) of the Clean Water Act to regulate cooling water intakes at existing facilities. The final rule was released in May 2014, and became effective in October 2014. Under the final rule, existing facilities that withdraw at least 25% of their water exclusively for cooling purposes and have a design intake flow of greater than two million gallons per day are required to reduce fish impingement (i.e., when fish and other aquatic organisms are trapped against screens when water is drawn into a facility's cooling system) by choosing one of seven options. Facilities that withdraw at least 125 million gallons of water per day from waters of the United States must also conduct studies to help their permitting authority determine what site-specific controls, if any, would be required to reduce entrainment of aquatic organisms (i.e., when organisms are drawn into the facility). PacifiCorp and MidAmerican Energy are assessing the options for compliance at their generating facilities impacted by the final rule and will complete impingement and entrainment studies. PacifiCorp's Dave Johnston generating facility and all of MidAmerican Energy's coal-fueled generating facilities, except Louisa, Ottumwa and Walter Scott, Jr. Unit 4, which have water cooling towers, withdraw more than 125 million gallons per day of water from waters of the United States for once-through cooling applications. PacifiCorp's Jim Bridger, Naughton, Gadsby, Hunter and Huntington generating facilities currently utilize closed cycle cooling towers but are designed to withdraw more than two million gallons of water per day. The standards are required to be met as soon as possible after the effective date of the final rule, but no later than eight years thereafter. The costs of compliance with the cooling water intake structure rule cannot be fully determined until the prescribed studies are conducted and the respective state environmental agencies review the studies to determine whether additional mitigation technologies should be applied. In the event thatIf PacifiCorp's or MidAmerican Energy's existing intake structures require modification, the costs are not anticipated to be significant to the consolidated financial statements. Nevada Power and Sierra Pacific do not utilize once-through cooling water intake or discharge structures at any of their generating facilities. All of the Nevada Power and Sierra Pacific generating stations are designed to have either minimal or zero discharge; therefore, they are not impacted by the §316(b) final rule.


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In November 2015, the EPA published final effluent limitation guidelines and standards for the steam electric power generating sector which, among other things, regulate the discharge of bottom ash transport water, fly ash transport water, combustion residual leachate and non-chemical metal cleaning wastes. These guidelines, which had not been revised since 1982, were revised in response to the EPA's concerns that the addition of controls for air emissions has changed the effluent discharged from coal- and natural gas-fueled generating facilities. Under the originally-promulgatedoriginally promulgated guidelines, permitting authorities were required to include the new limits in each impacted facility's discharge permit upon renewal with the new limits to be met as soon as possible, beginning November 1, 2018 and fully implemented by December 31, 2023. On April 5, 2017, a request for reconsideration and administrative stay of the guidelines was filed with the EPA. The EPA granted the request for reconsideration on April 12, 2017, imposed an immediate administrative stay of compliance dates in the rule that had not passed judicial review and requested the court stay the pending litigation over the rule until September 12, 2017. On June 6, 2017, the EPA proposed to extend many of the compliance deadlines that would otherwise occur in 2018 and on September 18, 2017, the EPA issued a final rule extending certain compliance dates for flue gas desulfurization wastewater and bottom ash transport water limits until November 1, 2020. In a separate action, on April 12, 2019, the Fifth Circuit Court of Appeals vacated two aspects of the final effluent limitation guidelines, concerning discharge limits for (1) legacy wastewater from ash transport or treatment systems and (2) combustion residual leachate from landfills or settling ponds. The Fifth Circuit found that EPA's own data did not support the agency's conclusion that impoundments were the best technology available for these two waste streams. EPA must now complete a new effluent limitation guideline for these discharge limits. On November 22, 2019, the EPA proposed updates to the 2015 rule, specifically addressing flue gas desulfurization wastewater and bottom ash transport water. The rule was finalized in October 2020 and took effect December 14, 2020. EPA revised selenium limits on flue gas desulfurization wastewater and the zero-discharge requirements on bottom ash transport water associated with blowdown of ash handling systems and adjusted compliance dates to allow time to procure and install necessary technology. The rule does not address the wastestreams at issue in the Fifth Circuit Court of Appeal's April 2019 decision. While most of the issues raised by this rule are already being addressed through the coal combustion residualsCCR rule and are not expected to impose significant additional requirements on the facilities, the impact of the rule cannot be fully determined until the reconsideration action is complete and any judicial review is conducted.



In April 2014, the EPA and the United States Army Corps of Engineers ("Corps of Engineers") issued a joint proposal to address "waters of the United States" to clarify protection under the Clean Water Act for streams and wetlands. The proposed rule comes as a result of United States Supreme Court decisions in 2001 and 2006 that created confusion regarding jurisdictional waters that were subject to permitting under either nationwide or individual permitting requirements. The final rule was released in May 2015 but is currently under appeal in multiple courts and a nationwide stay on the implementation of the rule was issued in October 2015. On January 13, 2017, the U.S.United States Supreme Court granted a petition to address jurisdictional challenges to the rule. The EPA plans to undertake a two-step process, with the first step to repeal the 2015 rule and the second step to carry out a notice-and-comment rulemaking in which a substantive re-evaluation of the definition of the "waters of the United States" will be undertaken. On July 27, 2017, the EPA and the Corps of Engineers issued a proposal to repeal the final rule and recodify the pre-existing rules pending issuance of a new rule, and on November 16, 2017, the agencies proposed to extend the implementation day of the "waters of the United States" rule to 2020; neither of the proposals has been finalized.which was finalized September 12, 2019. On January 22, 2018, the U.S.United States Supreme Court issued its decision related to the jurisdictional challenges to the rule, holding that federal district courts, rather than federal appeals courts, have proper jurisdiction to hear challenges to the rule and instructed the Sixth Circuit Court of Appeals to dismiss the petitions for review for lack of jurisdiction, clearing the way for imposition of the rule in certain states barring final action by the EPA to formalize the extension of the compliance deadline. Depending on the outcome of final action byOn December 11, 2018, the EPA and additional legal action,the Corps of Engineers proposed a varietyrevised definition of projects"waters of the United States" that otherwise would have qualified for streamlinedis intended to further clarify jurisdictional questions, eliminate case-by-case determinations and narrow Clean Water Act jurisdiction to align with Justice Scalia's 2006 opinion in Rapanos v. United States. On January 23, 2020, the EPA and the Corps of Engineers signed the final rule narrowing the federal government's permitting processesauthority under nationwide or regional general permitsthe Clean Water Act. The new Navigable Waters Protection Rule, which took effect 60 days after it was published in the Federal Register, redefines what waters qualify as navigable waters of the U.S. and are under Clean Water Act jurisdiction. Under the new rule, the Clean Water Act will be requiredconsidered to undergo more lengthycover territorial seas and costly individual permit procedures based on an extensiontraditional navigable waters; tributaries that flow into jurisdictional waters; wetlands that are directly adjacent to jurisdictional waters; and lakes, ponds and impoundments of jurisdictional waters. The agency and corps originally proposed six categories, but in the final version they collapsed ditches and impoundments into other categories. There are also 12 categories of waters that will be deemed jurisdictional. However, untilthe agencies highlighted as being excluded from coverage, including groundwater, ephemeral streams and pools, prior converted cropland and waste treatment systems. Until the rule is fully litigated and finalized, the Registrants cannot predict the impact on overall compliance obligations.


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In April 2020, the United States Supreme Court established a new test for Clean Water Act jurisdiction in County of Maui, Hawaii v. Hawaii Wildlife Fund, finding that the statute can cover discharges of contaminated groundwater in certain circumstances. The United States Supreme Court outlined a seven-factor test to determine whether discharges conveyed through groundwater to surface water are "functionally equivalent" to direct discharges, finding that the time it takes for pollutants to travel through groundwater and the distance traveled are the two most important factors in the test. The United States Supreme Court remanded County of Maui, Hawaii to the Ninth Circuit Court of Appeals for further adjudication, which subsequently remanded the case to the district court to determine whether additional discovery is needed before applying the new seven-factor test. The EPA finalized guidance January 14, 2021, implementing County of Maui. The EPA utilized the United States Supreme Court's seven factors, plus an additional factor for the design and performance of the system or facility from which the pollutant is reached, to determine whether pollutants that reach surface waters after traveling through groundwater are a "functional equivalent" to a direct discharge that require a permit. Until the functional equivalent test and guidance are applied by the courts, the Registrants cannot determine the impact of this case on their operations.

In April 2020, the U.S. District Court of the District of Montana vacated nationwide permit 12, which provides an expedited route for projects like oil and gas pipelines and utility lines to achieve compliance with the Clean Water Act, finding that include constructionthe Corps of Engineers, which implements the nationwide permit program, failed to conduct necessary programmatic consultation of nationwide permit 12 under the Endangered Species Act. The district court's vacatur, which was subsequently limited just to the Keystone XL pipeline project, the subject of the initial lawsuit, is on appeal to the Ninth Circuit Court of Appeals. On January 13, 2021, the Corps of Engineers finalized a rule modifying its nationwide permit program for certain activities affecting waters of the United States. The final rule restructures the nationwide permit program for utility lines by splitting the existing nationwide permit 12 into three separate nationwide permits – one for oil and demolitiongas, including pipelines; one for electrical and telecommunications; and one for water/sewer and other utilities. The Corps of Engineers included a biological assessment for the final rule but did not conduct a formal Endangered Species Act consultation in connection with reissuance of the nationwide permits. The Corps of Engineers reissued and revised 12 of 52 and added four new nationwide permits, which will face more complex permitting issues, higher costs or increased requirementsbe effective for compensatory mitigation.a period of five years. The remaining nationwide permits are scheduled for renewal in advance of expiration in 2022. Until the nationwide permit challenges are fully litigated, the Registrants cannot determine the impact of this case on their operations.


Coal Combustion Byproduct Disposal


In May 2010, the EPA released a proposed rule to regulate the management and disposal of coal combustion byproducts under the RCRA. The final rule was released by the EPA on December 19, 2014, was published in the Federal Register on April 17, 2015 and was effective on October 19, 2015. The final rule regulates coal combustion byproducts as non-hazardous waste under RCRA Subtitle D and establishes minimum nationwide standards for the disposal of coal combustion residuals.CCR. Under the final rule, surface impoundments and landfills utilized for coal combustion byproducts may need to be closed unless they can meet the more stringent regulatory requirements. The final rule requires regulated entities to post annual groundwater monitoring and corrective action reports. The first of these reports will bewas posted to the respective Registrant's coal combustion rule compliance data and information websites byin March 2, 2018. Based on the results in those reports, additional action may be required under the rule.


At the time the rule was published in April 2015, PacifiCorp operated 18 surface impoundments and seven landfills that contained coal combustion byproducts. Prior to the effective date of the rule in October 2015, nine surface impoundments and three landfills were either closed or repurposed to no longer receive coal combustion byproducts and hence are not subject to the final rule. As PacifiCorp proceeded to implement the final coal combustion rule, it was determined that two surface impoundments located at the Dave Johnston Generating Stationgenerating facility were hydraulically connected and effectively constitute a single impoundment. In November 2017, a new surface impoundment was placed into service at the Naughton Generating Station. At the time the rule was published in April 2015, MidAmerican Energy owned or operated nine surface impoundments and four landfills that contain coal combustion byproducts. Prior to the effective date of the rule in October 2015, MidAmerican Energy closed or repurposed six surface impoundments to no longer receive coal combustion byproducts. Five of these surface impoundments were closed on or before December 21, 2017 and the sixth is undergoing closure. At the time the rule was published in April 2015, the Nevada Utilities operated ten evaporative surface impoundments and two landfills that contained coal combustion byproducts. Prior to the effective date of the rule in October 2015, the Nevada Utilities closed four of the surface impoundments, four impoundments discontinued receipt of coal combustion byproducts making them inactive and two surface impoundments remain active and subject to the final rule. The two landfills remain active and subject to the final rule. Refer to Note 13 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 10 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K for discussion of the impacts on asset retirement obligations as a result of the final rule.



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Multiple parties filed challenges over various aspects of the final rule in the D.C. Circuit in 2015, resulting in settlement of some of the issues and subsequent regulatory action by the EPA, including subjecting inactive surface impoundments to regulation. On September 13, 2017, EPA Administrator Pruitt issued a letter to parties petitioning for administrative reconsideration of certain aspects of the coal combustion byproducts rule concluding it was appropriate and in the public interest to reconsider the provisions of the final rule addressed in the petitions. On September 27, 2017, the D.C. Circuit issued an order to the EPA requiring the agency to identify provisions of the rule that the agency intended to reconsider. The EPA submitted its list of potential issues to be reconsidered on November 15, 2017 and oralOral argument was held by the D.C. Circuit on November 20, 2017 over certain portions of the 2015 rule that had not been settled or otherwise remanded. On August 21, 2018, the D.C. Circuit issued its opinion in Utility Solid Waste Activities Group v. EPA, finding it was arbitrary and capricious for EPA to allow unlined ash ponds to continue operating until some unknown point in the future when groundwater contamination could be detected. The D.C. Circuit vacated the closure section of the CCR rule and remanded the issue of unlined ponds to EPA for reconsideration with specific instructions to consider harm to the environment, not just to human health. The D.C. Circuit also held EPA's decision to not regulate legacy ponds was arbitrary and capricious. While the D.C. Circuit's decision was pending, the EPA, on March 15, 2018, issued a proposal to address provisions of the final CCR rule that were remanded back to the agency on June 14, 2016, by the D.C. Circuit. The proposal included provisions that establish alternative performance standards for owners and operators of CCR units located in states that have approved permit programs or are otherwise subject to oversight through a permit program administered by the EPA. The EPA finalized the first phase of the CCR rule amendments on July 30, 2018, with an effective date of August 28, 2018 (the "Phase 1, Part 1 rule"). In addition to adopting alternative performance standards and revising groundwater performance standards for certain constituents, EPA extended the deadline by which facilities must initiate closure of unlined ash ponds exceeding a groundwater protection standard and impoundments that do not meet the rule's aquifer location restrictions to October 31, 2020. Following submittal of competing motions from environmental groups and the EPA to stay or remand this deadline extension, on March 13, 2019, the D.C. Circuit granted EPA's request to remand the rule and left the October 31, 2020 deadline in place while the agency undertakes a new rulemaking establishing a new deadline for initiating closure. On August 14, 2019, the EPA released its "Phase 2" proposal, which contains targeted amendments to the CCR rule in response to court remands and EPA settlement agreements, as well as issues raised in a rulemaking petition. The Phase 2 proposal modifies the definition of "beneficial use" by replacing a mass-based threshold with new location-based criteria for triggering the need to conduct an environmental demonstration; establishes a definition of "CCR storage pile" to address the temporary storage of CCR on the ground, depending on whether the material is destined for disposal or beneficial use; makes certain changes to the rule's annual groundwater monitoring and corrective action reports to make it easier for the public to see and understand the data contained within the reports; modifies the requirements related to facilities' publicly available CCR rule websites to make the information more readily available; and establishes a risk-based groundwater monitoring protection standard for boron in the event the EPA decides to add boron to Appendix IV in the CCR rule. The courtEPA accepted comments on the Phase 2 proposal through October 15, 2019. On December 22, 2020, the EPA released a notice of data availability relating to the Phase 2 proposal to revise the CCR rule's definition of beneficial use and provisions governing piles of CCR on- and off-site prior to beneficial use. The new information presented by the notice includes data and information the EPA received during the comment period on the Phase 2 proposal. The EPA accepted comment on the notice of data availability through February 22, 2021. The EPA has not yet issuedannounced an anticipated timeline for completing the Phase 2 rule. In February 2020, the EPA proposed a decisionfederal CCR permit program as required by the WIIN Act of 2016. The proposal would require permits for all CCR units in states that do not have an EPA-approved CCR program. The proposal would establish individual, general and permit-by-rule permits; a tiered schedule for applications to prioritize permits for high-hazard potential CCR units; and postpone timelines for permit applications for all other CCR units. The EPA has not announced an anticipated timeline for completing the federal CCR permit rule. In October 2020, the EPA released an advanced notice of proposed rulemaking on legacy CCR surface impoundments, seeking comment on and information related to issues relevant to development of regulations for legacy impoundments. Issues identified by the EPA include the definition of a legacy impoundment, information on the issues presenteduniverse of legacy impoundments, the types of regulatory requirements that should apply to legacy impoundments, and the EPA's regulatory authority to regulate legacy impoundments under RCRA subtitle D. The EPA accepted comment on the advanced notice through February 12, 2021. Until the proposals are finalized and fully litigated, the Registrants cannot determine whether additional action may be required.
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In August 2020, the EPA finalized its Holistic Approach to Closure: Part A rule ("Part A rule"). This proposal addressed the D.C. Circuit's revocation of the provisions that allow unlined impoundments to continue receiving ash. The Part A rule was finalized in August 2020 and establishes a new deadline of April 11, 2021, by which all unlined surface impoundments (including clay lined impoundments that do not otherwise meet the definition of "lined") must initiate closure. The Part A rule also identifies two extensions to that date: (1) a site-specific extension to develop alternate disposal capacity and initiate closure by October 15, 2023; and (2) a site-specific extension for facilities that agree to shut down the coal-fueled unit and complete ash pond closure activities by October 17, 2028. In addition to these closure deadline provisions, the Part A rule also finalized changes to the CCR rule's annual groundwater monitoring and corrective action reports and modified requirements related to CCR rule compliance websites initially proposed in the oral arguments. Phase 2 rule. PacifiCorp developed a demonstration for the development of alternative capacity for the Jim Bridger Plant FGD Pond 2 and a demonstration for closure of the Naughton Plant and ash pond and submitted them to the EPA in November 2020. Approval of these demonstrations is anticipated in first quarter 2021. No other Registrants used the provisions of the Part A rule. In December 2020, the EPA finalized its Holistic Approach to Closure: Part B rule ("Part B rule"), which establishes procedures for owners and operators of unlined ash ponds to demonstrate that the liner systems or underlying soils for these units perform as well as the liner criteria in the CCR rule. Additional provisions included in the proposed rule but not finalized, including the use of CCR in closure activities and allowing for the completion of groundwater corrective action during the post-closure care period, will be addressed in future rulemakings. As finalized, none of the relevant Registrants anticipate exercising the provisions of the Part B rule.

Separately, on August 10, 2017, the EPA issued proposed permitting guidance on how states' coal combustion residualsCCR permit programs should comply with the requirements of the final rule as authorized under the December 2016 Water Infrastructure Improvements for the Nation Act. UtilizingUsing that guidance, the state of Oklahoma submitted an application to theapplied for EPA for approval of its state program and, on January 16,June 28, 2018, the EPA's approval of the application was published in the Federal Register. Environmental groups, including Waterkeeper Alliance and the Sierra Club, filed suit in the D.C. Circuit on September 26, 2018, alleging that the EPA proposedunlawfully approved Oklahoma's permit program. This suit also incorporates claims first identified in a July 26, 2018 notice of intent to approvesue that alleged the application.EPA failed to perform nondiscretionary duties related to the development and publication of minimum guidelines for public participation in the approval of state permit programs for CCR. To date, none of the states in which the Registrants operate has submitted an applicationapplied for EPA approval of state permitting authority. The state of Utah adopted the federal final rule in September 2016, which required two landfillsPacifiCorp to submit permit applications for two of its landfills by March 2017. It is anticipated that the state of Utah will submit an applicationapply for EPA approval of its coal combustion residualsCCR permit program prior to the end of 2018.2021. In 2019, the state of Wyoming proposed to adopt state rules which incorporate the final federal rule by reference. It is anticipated that Wyoming will finalize its rule and seek the EPA's approval to implement a state permit program in 2021.


Notwithstanding the status of the final coal combustion residualsCCR rule, citizens' suits have been filed against regulated entities seeking judicial relief for contamination alleged to have been caused by releases of coal combustion byproducts. Some of these cases have been successful in imposing liability upon companies if coal combustion byproducts contaminate groundwater that is ultimately released or connected to surface water. In addition, actions have been filed against regulated entities seeking to require that surface impoundments containing coal combustion residualsCCR be subject to closure by removal rather than being allowed to effectuate closure in place as provided under the final rule. The Registrants are not a party to these lawsuits and until they are resolved, the Registrants cannot predict the impact on overall compliance obligations.


On January 20, 2021, President Biden issued an executive order on climate change which also required review of actions taken over the preceding four years that were harmful to "public health, environment, unsupported by the best available science, or otherwise not in the national best interest." The order included a non-exhaustive list of regulatory actions to be reviewed by the issuing agencies, including New Source Performance Standards for the power sector and the oil and gas sector, rescission of the Clean Power Plan, particulate matter and ozone NAAQS, steam electric effluent limitation guidelines, waters of the United States, reissuance of nationwide permits, and the phase one, part one and holistic approach to closure: parts A and B under the CCR rule. In addition, the Biden administration issued a regulatory freeze memorandum that prohibits submission of rules and guidance documents to the Federal Register without direct review, requires immediate withdrawal of rules and guidance documents submitted to the Federal Register but not yet published, and, for rules and guidance documents published but not yet having taken effect, consideration of a 60-day delay and possible additional comment period. Until the issuing agency completes its review and takes final action consistent with these directives, the relevant Registrant cannot determine whether additional action under any of these rules will be necessary.


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Other


Other laws, regulations and agencies to which the relevant Registrants are subject include, but are not limited to:
The federal Comprehensive Environmental Response, Compensation and Liability Act and similar state laws may require any current or former owners or operators of a disposal site, as well as transporters or generators of hazardous substances sent to such disposal site, to share in environmental remediation costs. Certain Registrants have been identified as potentially responsible parties in connection with certain disposal sites. The relevant Registrants have completed several cleanup actions and are participating in ongoing investigations and remedial actions. Costs associated with these actions are not expected to be material and are expected to be found prudent and included in rates.
The Nuclear Waste Policy Act of 1982, under which the United States Department of EnergyDOE is responsible for the selection and development of repositories for, and the permanent disposal of, spent nuclear fuel and high-level radioactive wastes. Refer to Note 1314 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 1211 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K for additional information regarding MidAmerican Energy's nuclear decommissioning obligations.
The federal Surface Mining Control and Reclamation Act of 1977 and similar state statutes establish operational, reclamation and closure standards that must be met during and upon completion of PacifiCorp's mining activities.
The FERC evaluates hydroelectric systems to ensure environmental impacts are minimized, including the issuance of environmental impact statements for licensed projects both initially and upon relicensing. The FERC monitors the hydroelectric facilities for compliance with the license terms and conditions, which include environmental provisions. Refer to Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 1314 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K for information regarding the relicensing of PacifiCorp's Klamath River hydroelectric system.



The Registrants expect they will be allowed to recover their respective prudently incurred costs to comply with the environmental laws and regulations discussed above. The Registrants' planning efforts take into consideration the complexity of balancing factors such as: (a) pending environmental regulations and requirements to reduce emissions, address waste disposal, ensure water quality and protect wildlife; (b) avoidance of excessive reliance on any one generation technology; (c) costs and trade-offs of various resource options including energy efficiency, demand response programs and renewable generation; (d) state-specific energy policies, resource preferences and economic development efforts; (e) additional transmission investment to reduce power costs and increase efficiency and reliability of the integrated transmission system; and (f) keeping rates affordable. Due to the number of generating units impacted by environmental regulations, deferring installation of compliance-related projects is often not feasible or cost effective and places the Registrants at risk of not having access to necessary capital, material, and labor while attempting to perform major equipment installations in a compressed timeframe concurrent with other utilities across the country. Therefore, the Registrants have established installation schedules with permitting agencies that coordinate compliance timeframes with construction and tie-in of major environmental compliance projects as units are scheduled off-line for planned maintenance outages; these coordinated efforts help reduce costs associated with replacement power and maintain system reliability.



Item 1A.    Risk Factors


Each Registrant is subject to numerous risks and uncertainties, including, but not limited to, those described below. Careful consideration of these risks, together with all of the other information included in this Form 10-K and the other public information filed by the relevant Registrant, should be made before making an investment decision. Additional risks and uncertainties not presently known or which each Registrant currently deems immaterial may also impair its business operations. Unless stated otherwise, the risks described below generally relate to each Registrant.


Corporate and Financial Structure Risks


BHE is a holding company and depends on distributions from subsidiaries, including joint ventures, to meet its obligations.


BHE is a holding company with no material assets other than the ownership interests in its subsidiaries and joint ventures, collectively referred to as its subsidiaries. Accordingly, cash flows and the ability to meet BHE's obligations are largely dependent upon the earnings of its subsidiaries and the payment of such earnings to BHE in the form of dividends or other distributions. BHE's subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay amounts due pursuant to BHE's senior debt, junior subordinated debt or its other obligations, or to make funds available, whether by dividends or other payments, for the payment of amounts due pursuant to BHE's senior debt, junior subordinated
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debt or its other obligations, and do not guarantee the payment of any of its obligations. Distributions from subsidiaries may also be limited by:
their respective earnings, capital requirements, and required debt and preferred stock payments;
the satisfaction of certain terms contained in financing, ring-fencing or organizational documents; and
regulatory restrictions that limit the ability of BHE's regulated utility subsidiaries to distribute profits.


BHE is substantially leveraged, the terms of its existing senior and junior subordinated debt do not restrict the incurrence of additional debt by BHE or its subsidiaries, and BHE's senior debt is structurally subordinated to the debt of its subsidiaries, and each of such factors could adversely affect BHE's consolidated financial results.


A significant portion of BHE's capital structure is comprised of debt, and BHE expects to incur additional debt in the future to fund items such as, among others, acquisitions, capital investments and the development and construction of new or expanded facilities. As of December 31, 2017,2020, BHE had the following outstanding obligations:
senior unsecured debt of $6.5$13.4 billion;
junior subordinated debentures of $100 million;
short-term borrowings of $3.3 billion;
guarantees and letters of credit in respect of subsidiary and equity method investments aggregating $332 million;$1.3 billion; and
commitments, subject to satisfaction of certain specified conditions, to provide equity contributions in support of renewable tax equity investments totaling $265$563 million.


BHE's consolidated subsidiaries also have significant amounts of outstanding debt, which totaled $29.8$38.6 billion as of December 31, 2017.2020. These amounts exclude (a) trade debt, (b) preferred stock obligations, (c) letters of credit in respect of subsidiary debt, and (d) BHE's share of the outstanding debt of its own or its subsidiaries' equity method investments.


Given BHE's substantial leverage, it may not have sufficient cash to service its debt, which could limit its ability to finance future acquisitions, develop and construct additional projects, or operate successfully under difficult conditions, including those brought on by adverse national and global economies, unfavorable financial markets or growth conditions where its capital needs may exceed its ability to fund them. BHE's leverage could also impair its credit quality or the credit quality of its subsidiaries, making it more difficult to finance operations or issue future debt on favorable terms, and could result in a downgrade in debt ratings by credit rating agencies.



The terms of BHE's and its subsidiaries' debt do not limit itsBHE's ability or the ability of its subsidiaries to incur additional debt or issue preferred stock. Accordingly, BHE or its subsidiaries could enter into acquisitions, new financings, refinancings, recapitalizations, capital leases or other highly leveraged transactions that could significantly increase BHE's or its subsidiaries' total amount of outstanding debt. The interest payments needed to service this increased level of debt could adversely affect BHE's consolidatedor its subsidiaries' financial results. Many of BHE's subsidiaries' debt agreements contain covenants, or may in the future contain covenants, that restrict or limit, among other things, such subsidiaries' ability to create liens, sell assets, make certain distributions, incur additional debt or miss contractual deadlines or requirements, and BHE's ability to comply with these covenants may be affected by events beyond its control. Further, if an event of default accelerates a repayment obligation and such acceleration results in an event of default under some or all of BHE's other debt, BHE may not have sufficient funds to repay all of the accelerated debt simultaneously, and the other risks described under "Corporate and Financial Structure Risks" may be magnified as well.


Because BHE is a holding company, the claims of its senior debt holders are structurally subordinated with respect to the assets and earnings of its subsidiaries. Therefore, the rights of its creditors to participate in the assets of any subsidiary in the event of a liquidation or reorganization are subject to the prior claims of the subsidiary's creditors and preferred shareholders, if any. In addition, pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties, MidAmerican Energy's electric utility properties in the state of Iowa, Nevada Power's and Sierra Pacific's properties in the state of Nevada, AltaLink's transmission properties, the equity interest of MidAmerican Funding's subsidiary and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of solar and wind generation projects, are directly or indirectly pledged to secure their financings and, therefore, may be unavailable as potential sources of repayment of BHE's debt.


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A downgrade in BHE's credit ratings or the credit ratings of its subsidiaries, including the Subsidiary Registrants, could negatively affect BHE's or its subsidiaries' access to capital, increase the cost of borrowing or raise energy transaction credit support requirements.


BHE's senior unsecured debt and its subsidiaries' long-term debt, including the Subsidiary Registrants, are rated by various rating agencies. BHE cannot give assurance that its senior unsecured debt rating or any of its subsidiaries' long-term debt ratings will not be reduced in the future. Although none of the Registrants' outstanding debt has rating-downgrade triggers that would accelerate a repayment obligation, a credit rating downgrade would increase any such Registrant's borrowing costs and commitment fees on its revolving credit agreements and other financing arrangements, perhaps significantly. In addition, such Registrant would likely be required to pay a higher interest rate in future financings, and the potential pool of investors and funding sources would likely decrease. Further, access to the commercial paper market the principal source of short-term borrowings for each Registrant, could be significantly limited, resulting in higher interest costs.


Similarly, any downgrade or other event negatively affecting the credit ratings of BHE's subsidiaries could make their costs of borrowing higher or access to funding sources more limited, which in turn could cause BHE to provide liquidity in the form of capital contributions or loans to such subsidiaries, thus reducing its and its subsidiaries' liquidity and borrowing capacity.


Most of the Registrants' large wholesale customers, suppliers and counterparties require such Registrant to have sufficient creditworthiness in order to enter into transactions, particularly in the wholesale energy markets. If the credit ratings of a Registrant were to decline, especially below investment grade, the relevant Registrant's financing costs and borrowings would likely increase because certain counterparties may require collateral in the form of cash, a letter of credit or some other form of security for existing transactions and as a condition to entering into future transactions with such Registrant. Amounts maycould be material and maycould adversely affect such Registrant's liquidity and cash flows.


BHE's majority shareholder, Berkshire Hathaway, could exercise control over BHE in a manner that would benefit Berkshire Hathaway to the detriment of BHE's creditors and BHE could exercise control over the Subsidiary Registrants in a manner that would benefit BHE to the detriment of the Subsidiary Registrants' creditors and PacifiCorp's PacifiCorp'spreferred stockholders.


Berkshire Hathaway is majority owner of BHE and has control over all decisions requiring shareholder approval. In circumstances involving a conflict of interest between Berkshire Hathaway and BHE's creditors, Berkshire Hathaway could exercise its control in a manner that would benefit Berkshire Hathaway to the detriment of BHE's creditors.


BHE indirectly owns all of the common stock of PacifiCorp, Nevada Power and Sierra Pacific and the membership interest in Eastern Energy Gas. BHE is also the sole member of MidAmerican Funding and, accordingly, indirectly owns all of MidAmerican Energy's common stock. As a result, BHE has control over all decisions requiring shareholder approval, including the election of directors. In circumstances involving a conflict of interest between BHE and the creditors of the Subsidiary Registrants, BHE could exercise its control in a manner that would benefit BHE to the detriment of the Subsidiary Registrants' creditors.



Business Risks


Much of BHE's growth has been achieved through acquisitions, and any such acquisition may not be successful.


Much of BHE's growth has been achieved through acquisitions. Future acquisitions may range from buying individual assets to the purchase of entire businesses. BHE will continue to investigate and pursue opportunities for future acquisitions that it believes, but cannot assure, you, may increase value and expand or complement existing businesses. BHE may participate in bidding or other negotiations at any time for such acquisition opportunities which may or may not be successful.


Any acquisition entails numerous risks, including, among others:
the failure to complete the transaction for various reasons, such as the inability to obtain the required regulatory approvals, materially adverse developments in the potential acquiree's business or financial condition or successful intervening offers by third parties;
the failure of the combined business to realize the expected benefits;
the risk that federal, state or foreign regulators or courts could require regulatory commitments or other actions in respect of acquired assets, potentially including programs, contributions, investments, divestitures and market mitigation measures;
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the risk of unexpected or unidentified issues not discovered in the diligence process; and
the need for substantial additional capital and financial investments.


An acquisition could cause an interruption of, or a loss of momentum in, the activities of one or more of BHE's subsidiaries. In addition, the final orders of regulatory authorities approving acquisitions may be subject to appeal by third parties. The diversion of BHE management's attention and any delays or difficulties encountered in connection with the approval and integration of the acquired operations could adversely affect BHE's combined businesses and financial results and could impair its ability to realize the anticipated benefits of the acquisition.


BHE cannot assure you that future acquisitions, if any, or any integration efforts will be successful, or that BHE's ability to repay its obligations will not be adversely affected by any future acquisitions.


The Registrants are subject to operating uncertainties and events beyond each respective Registrant's control that impact the costs to operate, maintain, repair and replace utility and interstate natural gas pipeline systems, which could adversely affect each respective Registrant's consolidated financial results.


The operation of complex utility systems or interstate natural gas pipeline and storage systems that are spread over large geographic areas involves many operating uncertainties and events beyond each respective Registrant's control. These potential events include the breakdown or failure of the Registrants' thermal, nuclear, hydroelectric, solar, wind and other electricity generating facilities and related equipment, compressors, pipelines, transmission and distribution lines or other equipment or processes, which could lead to catastrophic events; unscheduled outages; strikes, lockouts or other labor-related actions; shortages of qualified labor; transmission and distribution system constraints; failure to obtain, renew or maintain rights-of-way, easements and leases on United States federal, Native American, First Nations or tribal lands; terrorist activities or military or other actions, including cyber attacks; fuel shortages or interruptions; unavailability of critical equipment, materials and supplies; low water flows and other weather-related impacts; performance below expected levels of output, capacity or efficiency; operator error; third partythird-party excavation errors; unexpected degradation of pipeline systems; design, construction or manufacturing defects; and catastrophic events such as severe storms, floods, fires, earthquakes, explosions, landslides, an electromagnetic pulse, mining incidents, litigation, wars, terrorism, pandemics (including potentially in relation to COVID-19) and embargoes. A catastrophic event might result in injury or loss of life, extensive property damage or environmental or natural resource damages. For example, in the event of an uncontrolled release of water at one of PacifiCorp's high hazard potential hydroelectric dams, it is probable that loss of human life, disruption of lifeline facilities and property damage could occur in the downstream population and civil or other penalties could be imposed by the FERC. The extent of that liability would be determined by the applicable state law where any such damage occurred. Any of these events or other operational events could significantly reduce or eliminate the relevant Registrant's revenue or significantly increase its expenses, thereby reducing the availability of distributions to BHE. For example, if the relevant Registrant cannot operate its electricity or natural gas facilities at full capacity due to damage caused by a catastrophic event, its revenue could decrease and its expenses could increase due to the need to obtain energy from more expensive sources.

Further, the Registrants self-insure many risks, and current and future insurance coverage may not be sufficient to replace lost revenue or cover repair and replacement costs.costs or other damages. The scope, cost and availability of each Registrant's insurance coverage may change, including the portion that is self-insured. Any reduction of each Registrant's revenue or increase in its expenses resulting from the risks described above, could adversely affect the relevant Registrant's consolidated financial results.


The Registrants are subject to increasing risk from catastrophic wildfires and may be unable to obtain enough insurance coverage at a reasonable cost or at all to adequately protect the Registrants from liability, which could materially affect the Registrants financial results and liquidity.

The risk of catastrophic and severe wildfires has increased in the western United States giving rise to large damage claims against utilities for fire-related losses. Catastrophic and severe wildfires can occur in PacifiCorp, Nevada Power and Sierra Pacific's ("Western Domestic Utilities") service territory even when the Western Domestic Utilities effectively implement their wildfire mitigation plans and prudently manage their systems.

In California, for example, where PacifiCorp operates, "inverse condemnation" currently exposes utilities to potential liability for property damages where the utility's electrical equipment was a substantial cause of the wildfire. California courts have held that utilities can be held liable under inverse condemnation without being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover attorney's fees. As a result of inverse condemnation being applied to utilities and wildfire damages, recent losses recorded by insurance companies, and the risk of an increase in the frequency, duration and size of wildfires, insurance for wildfire liabilities may not be available or may be available only at rates that are prohibitively expensive. In addition, even if insurance for wildfire liabilities is available, it may not be available in amounts
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necessary to cover potential losses. Uninsured losses and increases in the cost of insurance may be challenged when PacifiCorp seeks cost recovery and may not be recoverable in customer rates.

The Western Domestic Utilities monitor weather conditions with specific thresholds for designated high fire consequence areas to help ensure the safe and reliable operation of their systems during periods of elevated wildfire ignition risk. Should weather conditions become extreme, the Western Domestic Utilities may de-energize certain sections of their distribution and transmission facilities as a last resort to minimize risk to the public. These "public safety power shutoffs" could be subject to increased scrutiny by regulators and policy makers. And, although "public safety power shutoffs" are intended to minimize risk of wildfire ignition, de-energization may cause other damages for which the Western Domestic Utilities could be held liable.

Damage claims against PacifiCorp for the 2020 Wildfires (as defined below) may materially affect PacifiCorp's financial condition and results of operations.

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and California (the "2020 Wildfires"). The 2020 Wildfires spread over certain parts of PacifiCorp's service territory and surrounding areas in Oregon and California and are 100% contained. Investigations into the cause and origin of each wildfire are complex and ongoing. Although those investigations are not complete, several civil actions (including a putative class action) have been filed in Oregon and California on behalf of citizens and businesses who suffered damages from fires allegedly involving PacifiCorp's equipment. It is possible that additional lawsuits against PacifiCorp may be filed in Oregon or California with respect to the 2020 Wildfires. If PacifiCorp is found liable for damages related to the 2020 Wildfires and is unable to, or believes that it will be unable to, recover those damages through insurance or customer rates, or access the bank and capital markets on reasonable terms, PacifiCorp's financial results could be adversely affected. Refer to PacifiCorp's Note 14 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the 2020 Wildfires.

Each Registrant's business could be adversely affected by COVID-19 or other pathogens, or similar crises.

Each Registrant's business could be adversely affected by the worldwide outbreak of COVID-19 generally and more specifically in the markets in which we operate, including, without limitation, if each Registrant's utility customers experience decreases in demand for their products and services or otherwise reduce their consumption of electricity or natural gas that the respective Registrant supplies, or if such Registrant experiences material payment defaults by its customers. For example, if the tourism industry in Nevada experiences a significant and extended decrease as a result of changes in customer behavior, demand for electricity sold by Nevada Power and Sierra Pacific could decrease. In addition, each Registrant's results and financial condition may be adversely affected by federal, state or local legislation related to COVID-19 (or other similar laws, regulations, orders or other governmental or regulatory actions) that would impose a moratorium on terminating electric or natural gas utility services, including related assessment of late fees, due to non-payment or other circumstances. Certain Registrants have already temporarily implemented certain of these measures, either voluntarily or in accordance with requirements of the respective Registrant's public utility commissions. These requirements will likely remain for the duration of the COVID-19 pandemic. Additionally, HomeServices' residential real estate brokerage business could experience a decline (which could be significant) in residential property transactions if potential customers elect to defer purchases in reaction to any substantial outbreak, or fear of such outbreak, of COVID-19 or other pathogen, or due to general economic uncertainty such as high unemployment levels, in some or all of the real estate markets in which HomeServices operates. The government and regulators could impose other requirements on each Registrant's business that could have an adverse impact on such Registrant's financial results.

Further, the recent outbreak of COVID-19, or another pathogen, could disrupt supply chains (including supply chains for energy generation, steel or transmission wire) relating to the markets each Registrant serves, which could adversely impact such Registrant's ability to generate or supply power. In addition, such disruptions to the supply chain could delay certain construction and other capital expenditure projects, including construction and repowering of the Registrants' renewable generation projects. Such disruptions could adversely affect the impacted Registrant's future financial results.

Such declines in demand, any inability to generate or supply power or delays in capital projects could also significantly reduce cash flows at BHE's subsidiaries, thereby reducing the availability of distributions to BHE, which could adversely affect its financial results.


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Each Registrant is subject to extensive federal, state, local and foreign legislation and regulation, including numerous environmental, health, safety, reliability, data privacy and other laws and regulations that affect its operations and costs. These laws and regulations are complex, dynamic and subject to new interpretations or change. In addition, new laws and regulations, including initiatives regarding deregulation and restructuring of the utility industry, are continually being proposed and enacted that impose new or revised requirements or standards on each Registrant.


Each Registrant is required to comply with numerous federal, state, local and foreign laws and regulations as described in "General Regulation" and "Environmental Laws and Regulations" in Item 1 of this Form 10-K that have broad application to each Registrant and limits the respective Registrant's ability to independently make and implement management decisions regarding, among other items, acquiring businesses; constructing, acquiring, disposing or disposingretiring of operating assets; operating and maintaining generating facilities and transmission and distribution system assets; complying with pipeline safety and integrity and environmental requirements; setting rates charged to customers; establishing capital structures and issuing debt or equity securities; transacting between subsidiaries and affiliates; and paying dividends or similar distributions. These laws and regulations, which are followed in developing the Registrants' safety and compliance programs and procedures, are implemented and enforced by federal, state and local regulatory agencies, such as the Occupational Safety and Health Administration, the FERC, the EPA, the DOT, the NRC, the Federal Mine Safety and Health Administration and various state regulatory commissions in the United States, and foreign regulatory agencies, such as GEMA, which discharges certain of its powers through its staff within Ofgem, in Great Britain and the AUC in Alberta, Canada.


Compliance with applicable laws and regulations generally requires each Registrant to obtain and comply with a wide variety of licenses, permits, inspections, audits and other approvals. Further, compliance with laws and regulations can require significant capital and operating expenditures, including expenditures for new equipment, inspection, cleanup costs, removal and remediation costs and damages arising out of contaminated properties. Compliance activities pursuant to existing or new laws and regulations could be prohibitively expensive or otherwise uneconomical. As a result, each Registrant could be required to shut down some facilities or materially alter its operations. Further, each Registrant may not be able to obtain or maintain all required environmental or other regulatory approvals and permits for its operating assets or development projects. Delays in, or active opposition by third parties to, obtaining any required environmental or regulatory authorizations or failure to comply with the terms and conditions of the authorizations may increase costs or prevent or delay each Registrant from operating its facilities, developing or favorably locating new facilities or expanding existing facilities. If any Registrant fails to comply with any environmental or other regulatory requirements, such Registrant may be subject to penalties and fines or other sanctions, including changes to the way its electricity generating facilities are operated that may adversely impact generation or how the Pipeline Companies are permitted to operate their systems that may adversely impact throughput. The costs of complying with laws and regulations could adversely affect each Registrant's consolidated financial results. Not being able to operate existing facilities or develop new generating facilities to meet customer electricity needs could require such Registrant to increase its purchases of electricity on the wholesale market, which could increase market and price risks and adversely affect such Registrant's consolidated financial results.


Existing laws and regulations, while comprehensive, are subject to changes and revisions from ongoing policy initiatives by legislators and regulators and to interpretations that may ultimately be resolved by the courts. For example, changes in laws and regulations could result in, but are not limited to, increased competition and decreased revenues within each Registrant's service territories, such as the defeated Nevada Energy Choice Initiative; new environmental requirements, including the implementation of or changes to the Affordable Clean Power Plan,Energy rule, RPS and GHG emissions reduction goals; the issuance of new or stricter air quality standards; the implementation of energy efficiency mandates; the issuance of regulations governing the management and disposal of coal combustion byproducts; changes in forecasting requirements; changes to each Registrant's service territories as a result of condemnation or takeover by municipalities or other governmental entities, particularly where it lacks the exclusive right to serve its customers; the inability of each Registrant to recover its costs on a timely basis, if at all; new pipeline safety requirements; or a negative impact on each Registrant's current transportation and cost recovery arrangements. In addition to changes in existing legislation and regulation, new laws and regulations are likely to be enacted from time to time that impose additional or new requirements or standards on each Registrant. Adverse rulings in GHG-related cases could result in increased or changed regulations and could increase costs for GHG emitters, including the Registrants' generating facilities. The GHG rules, changes to those rules, and the Registrants' compliance requirements are subject to potential outcomes from proceedings and litigation challenging the rules.



New federal, regional, state and international accords, legislation, regulation, or judicial proceedings limiting GHG emissions could have a material adverse impact on the Registrants, the United States and the global economy. Companies and industries with higher GHG emissions, such as utilities with significant coal-fueled generating facilities, will be subject to more direct impacts and greater financial and regulatory risks. The impact is dependent on numerous factors, none of which can be meaningfully quantified at this time. These factors include, but are not limited to, the magnitude and timing of GHG emissions reduction requirements; the design of the requirements; the cost, availability and effectiveness of emissions control technology;
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the price, distribution method and availability of offsets and allowances used for compliance; government-imposed compliance costs; and the existence and nature of incremental cost recovery mechanisms. Examples of how new requirements may impact the Registrants include:
Additional costs may be incurred to purchase required emissions allowances under any market-based cap-and-trade system in excess of allocations that are received at no cost. These purchases would be necessary until new technologies could be developed and deployed to reduce emissions or lower carbon generation is available;
Acquiring and renewing construction and operating permits for new and existing generating facilities may be costly and difficult;
Additional costs may be incurred to purchase and deploy new generating technologies;
Costs may be incurred to retire existing coal-fueled generating facilities before the end of their otherwise useful lives or to convert them to burn fuels, such as natural gas or biomass, that result in lower emissions;
Operating costs may be higher and generating unit outputs may be lower;
Higher interest and financing costs and reduced access to capital markets may result to the extent that financial markets view climate change and GHG emissions as a greater business risk; and
The relevant Registrant's natural gas pipeline operations, electric transmission and retail sales may be impacted in response to changes in customer demand and requirements to reduce GHG emissions.

The impact of events or conditions caused by climate change, whether from natural processes or human activities, are uncertain and could vary widely, from highly localized to worldwide, and the extent to which a utility's operations may be affected is uncertain. Climate change may cause physical and financial risk through, among other things, sea level rise, changes in precipitation and extreme weather events. Consumer demand for energy may increase or decrease, based on overall changes in weather and as customers promote lower energy consumption through the continued use of energy efficiency programs or other means. Availability of resources to generate electricity, such as water for hydroelectric production and cooling purposes, may also be impacted by climate change and could influence the Registrants' existing and future electricity generating portfolio. These issues may have a direct impact on the costs of electricity production and increase the price customers pay or their demand for electricity.

Implementing actions required under, and otherwise complying with, new federal and state laws and regulations and changes in existing ones are among the most challenging aspects of managing utility operations. The Registrants cannot accurately predict the type or scope of future laws and regulations that may be enacted, changes in existing ones or new interpretations by agency orders or court decisions, nor can each Registrant determine their impact on it at this time; however, any one of these could adversely affect each Registrant's consolidated financial results through higher capital expenditures and operating costs, and early closure of generating facilities or lower tax benefits or restrict or otherwise cause an adverse change in how each Registrant operates its business. To the extent that each Registrant is not allowed by its regulators to recover or cannot otherwise recover the costs to comply with new laws and regulations or changes in existing ones, the costs of complying with such additional requirements could have a material adverse effect on the relevant Registrant's consolidated financial results. Additionally, even if such costs are recoverable in rates, if they are substantial and result in rates increasing to levels that substantially reduce customer demand, this could have a material adverse effect on the relevant Registrant's consolidated financial results. The Registrants have made their best estimate regarding the impact of the 2017 Tax Reform and the probability and timing of settlements of net regulatory liabilities established pursuant to the 2017 Tax Reform. However, the amount and timing of the settlements may change based on decisions and actions by each Registrant's regulators, which could have an effect on the relevant Registrant's consolidated financial results.


Recovery of costs and certain activities by each Registrant is subject to regulatory review and approval, and the inability to recover costs or undertake certain activities may adversely affect each Registrant's consolidated financial results.


State Regulatory Rate Review Proceedings


The Utilities establish rates for their regulated retail service through state regulatory proceedings. These proceedings typically involve multiple parties, including government bodies and officials, consumer advocacy groups and various consumers of energy, who have differing concerns but generally have the common objective of limiting rate increases or requesting rate decreases while also requiring the Utilities to ensure system reliability. Decisions are subject to judicial appeal, potentially leading to further uncertainty associated with the approval proceedings.


States set retail rates based in part upon the state regulatory commission's acceptance of an allocated share of total utility costs. When states adopt different methods to calculate interjurisdictional cost allocations, some costs may not be incorporated into rates of any state or other jurisdiction. Ratemaking is also generally done on the basis of estimates of normalized costs, so if a given year's realized costs are higher than normalized costs, rates may not be sufficient to cover those costs. In some cases, actual costs are lower than the normalized or estimated costs recovered through rates and from time-to-time may result in a state
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regulator requiring refunds to customers. Each state regulatory commission generally sets rates based on a test year established in accordance with that commission's policies. The test year data adopted by each state regulatory commission may create a lag between the incurrence of a cost and its recovery in rates. Each state regulatory commission also decides the allowed levels of expense, investment and capital structure that it deems are just and reasonableprudently incurred in providing the service and may disallow recovery in rates for any costs that it believes do not meet such standard. Additionally, each state regulatory commission establishes the allowed rate of return the Utilities will be given an opportunity to earn on their sources of capital. While rate regulation is premised on providing a fair opportunity to earn a reasonable rate of return on invested capital, the state regulatory commissions do not guarantee that each Registrant will be able to realize the allowed rate of return.return or recover all of its costs even if it believes such costs to be prudently incurred.


Energy cost increasesSome state regulatory commissions have authorized recovery of certain costs above the level assumed in establishing base rates through adjustment mechanisms, which may be subject to customer sharing. Any significant increase in fuel costs for electricity generation or purchased electricity costs could have a negative impact on the Utilities, despite efforts to minimize this impact through the use of hedging contracts and sharingadjustment mechanisms or through future general regulatory rate reviews. Any of these consequences could adversely affect each Registrant's consolidated financial results.



FERC Jurisdiction


The FERC authorizes cost-based rates associated with transmission services provided by the Utilities' transmission facilities. Under the Federal Power Act, the Utilities, or MISO as it relates to MidAmerican Energy, may voluntarily file, or may be obligated to file, for changes, including general rate changes, to their system-wide transmission service rates. General rate changes implemented may be subject to refund. The FERC also has responsibility for approving both cost- and market-based rates under which the Utilities sell electricity atin the wholesale market, has jurisdiction over most of PacifiCorp's hydroelectric generating facilities and has broad jurisdiction over energy markets. The FERC may impose price limitations, bidding rules and other mechanisms to address some of the volatility of these markets or could revoke or restrict the ability of the Utilities to sell electricity at market-based rates, which could adversely affect each Registrant's consolidated financial results. The FERC also maintains rules concerning standards of conduct, affiliate restrictions, interlocking directorates and cross-subsidization. As a transmission owning member of MISO, MidAmerican Energy is also subject to MISO-directed modifications of market rules, which are subject to FERC approval and operational procedures. As participants in EIM, PacifiCorp, Nevada Power and Sierra Pacific are also subject to applicable California ISO rules, which are subject to FERC approval and operational procedures. The FERC may also impose substantial civil penalties for any non-compliance with the Federal Power Act and the FERC's rules and orders.


The NERC has standards in place to ensure the reliability of the electric generation system and transmission grid. The Utilities are subject to the NERC's regulations and periodic audits to ensure compliance with those regulations. The NERC may carry out enforcement actions for non-compliance and administer significant financial penalties, subject to the FERC's review.


The FERC has jurisdiction over, among other things, the construction, abandonment, modification and operation of natural gas pipelines and related facilities used in the transportation, storage and sale of natural gas in interstate commerce, including all rates, charges and terms and conditions of service. The FERC also has market transparency authority and has adopted additional reporting and internet posting requirements for natural gas pipelines and buyers and sellers of natural gas.


Rates for the interstate natural gas transmission and storage operations at the Pipeline Companies, which include reservation, commodity, surcharges, fuel and gas lost and unaccounted for charges, are authorized by the FERC. In accordance with the FERC's rate-making principles, the Pipeline Companies' current maximum tariff rates are designed to recover prudently incurred costs included in their pipeline system's regulatory cost of service that are associated with the construction, operation and maintenance of their pipeline system and to afford the Pipeline Companies an opportunity to earn a reasonable rate of return. Nevertheless, the rates the FERC authorizes the Pipeline Companies to charge their customers may not be sufficient to recover the costs incurred to provide services in any given period. Moreover, from time to time, the FERC may change, alter or refine its policies or methodologies for establishing pipeline rates and terms and conditions of service. In addition, the FERC has the authority under Section 5 of the Natural Gas Act of 1938 ("NGA") to investigate whether a pipeline may be earning more than its allowed rate of return and, when appropriate, to institute proceedings against such pipeline to prospectively reduce rates. Any such proceedings, if instituted, could result in significantly adverse rate decreases.


Under FERC policy, interstate pipelines and their customers may execute contracts at negotiated rates, which may be above or below the maximum tariff rate for that service or the pipeline may agree to provide a discounted rate, which would be a rate between the maximum and minimum tariff rates. In a rate proceeding, rates in these contracts are generally not subject to adjustment. It is possible that the cost to perform services under negotiated or discounted rate contracts will exceed the cost used in the determination of the negotiated or discounted rates, which could result either in losses or lower rates of return for providing such services. Under certain circumstances, FERC policy allows interstate natural gas pipelines to design new
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maximum tariff rates to recover such costs in regulatory rate reviews. However, with respect to discounts granted to affiliates, the interstate natural gas pipeline must demonstrate that the discounted rate was necessary in order to meet competition.


GEMA Jurisdiction


The Northern Powergrid Distribution Companies, as Distribution Network Operators ("DNOs") and holders of electricity distribution licenses, are subject to regulation by GEMA. Most of the revenue of a DNO is controlled by a distribution price control formula set out in the electricity distribution license. The price control formula does not directly constrain profits from year to year,year-to-year, but is a control on revenue that operates independentlyindependent of a significant portion of the DNO's actual costs. A resetting of the formula does not require the consent of the DNO, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's Competition and Markets Authority. GEMA is able to impose financial penalties on DNOs that contravene any of their electricity distribution license duties or certain of their duties under British law, or fail to achieve satisfactory performance of individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the DNO's revenue. During the term of any price control, additional costs have a direct impact on the financial results of the Northern Powergrid Distribution Companies.



AUC Jurisdiction


The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including ALP,AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems.


The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of ALP'sAltaLink's activities, including its tariffs, rates, construction, operations and financing. The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable and approval of the transmission tariff rates of regulated transmission providers by the AESO, which is the independent transmission system operator in Alberta that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulationregulations and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.


In addition, AUC approval is required in connection with new energy and regulated utility initiatives in Alberta, amendments to existing approvals and financing proposals by designated utilities.

The AESO determines the need and plans for the expansion and enhancement of a congestion free transmission system in Alberta in accordance with applicable law and reliability standards. The AESO's responsibilities include long-term transmission planning and management, including assessing and planning for the current and future transmission system capacity needs of AESO market participants. When AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application to the AUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an application to the AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the geographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that transmission projects may be subject to a competitive process open to qualifying bidders. In either case, there can be no assurance that any jurisdictional market participant that BHE may own, including AltaLink, will be selected by the AESO to build, own and operate transmission facilities, even if BHE's market participant operates in the relevant geographic area, or that BHE's market participant will be successful in any such competitive process in which it may participate.


Physical or cyber attacks, both threatened and actual, could impact each Registrant's operations and could adversely affect its consolidated financial results.


Each Registrant relies on information technology in virtually all aspects of its business. Like those of many large businesses, certain of the Registrant's technology systems have been subject to computer viruses, malicious codes, unauthorized access, phishing efforts, denial-of-service attacks and other cyber attacks and each Registrant expects to be subject to similar attacks in the future as such attacks become more sophisticated and frequent. A significant disruption or failure of its information technology systems by physical or cyber attack could result in service interruptions, safety failures, security violations,events, regulatory compliance failures, an inability to protect sensitive corporate and customer information and assets against intruders,unauthorized users, and other operational difficulties. Attacks perpetrated against each Registrant's information systems could result in loss of assets and critical information and expose it to remediation costs and reputational damage.


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Although the Registrants have taken steps intended to mitigate these risks, a significant disruption or cyber intrusion could lead to misappropriation of assets or data corruption.adversely affect each Registrant's financial results. Cyber attacks could further adversely affect each Registrant's ability to operate facilities, information technology and business systems, or compromise sensitive customer and employee information. In addition, physical or cyber attacks against key suppliers or service providers could have a similar effect on each Registrant. Additionally, if each Registrant is unable to acquire, develop, implement, adopt or implementprotect rights around new technology, it may suffer a competitive disadvantage, which could also have an adverse effect on its results of operations, financial condition or liquidity. Any of these items could adversely affect each Registrant's results of operations, financial condition or liquidity.disadvantage.


Each Registrant is actively pursuing, developing and constructing new or expanded facilities, the completion and expected costs of which are subject to significant risk, and each Registrant has significant funding needs related to its planned capital expenditures.


Each Registrant actively pursues, develops and constructs new or expanded facilities. Each Registrant expects to incur significant annual capital expenditures over the next several years. Such expenditures may include construction and other costs for new electricity generating facilities, electric transmission or distribution projects, environmental control and compliance systems, natural gas storage facilities, new or expanded pipeline systems, and continued maintenance and upgrades of existing assets.


Development and construction of major facilities are subject to substantial risks, including fluctuations in the price and availability of commodities, manufactured goods, equipment, and the imposition of tariffs thereon when sourced by foreign providers, labor, siting and permitting and changes in environmental and operational compliance matters, load forecasts and other items over a multi-year construction period, as well as counterparty risk and the economic viability of the Registrants' suppliers, customers and contractors. Certain of the Registrants' construction projects are substantially dependent upon a single supplier or contractor and replacement of such supplier or contractor may be difficult and cannot be assured. These risks may result in the inability to timely complete a project or higher than expected costs to complete an asset and place it in-service and, in extreme cases, the loss of the power purchase agreements or other long-term off-take contracts underlying such projects. Such costs may not be recoverable in the regulated rates or market or contract prices each Registrant is able to charge its customers. Delays in construction of renewable projects may result in delayed in-service dates which may result in the loss of anticipated revenue or income tax benefits. It is also possible that additional generation needs may be obtained through power purchase agreements, which could increase long-term purchase obligations and force reliance on the operating performance of a third party. The inability to successfully and timely complete a project, avoid unexpected costs or recover any such costs could adversely affect such Registrant's consolidated financial results.


Furthermore, each Registrant depends upon both internal and external sources of liquidity to provide working capital and to fund capital requirements. If BHE does not provide needed funding to its subsidiaries and the subsidiaries are unable to obtain funding from external sources, they may need to postpone or cancel planned capital expenditures.


A significant sustained decrease in demand for electricity or natural gas in the markets served by each Registrant would decrease its operating revenue, could impact its planned capital expenditures and could adversely affect its consolidated financial results.


A significant sustained decrease in demand for electricity or natural gas in the markets served by each Registrant would decrease its operating revenue, could impact its planned capital expenditures and could adversely affect its consolidated financial results. Factors that could lead to a decrease in market demand include, among others:
a depression, recession or other adverse economic condition that results in a lower level of economic activity or reduced spending by consumers on electricity or natural gas;
an increase in the market price of electricity or natural gas or a decrease in the price of other competing forms of energy;
shifts in competitively priced natural gas supply sources away from the sources connected to the Pipeline Companies' systems, including shale gas sources;
efforts by customers, legislators and regulators to reduce the consumption of electricity generated or distributed by each Registrant through various existing laws and regulations, as well as, deregulation, conservation, energy efficiency and private generation measures and programs;
laws mandating or encouraging renewable energy sources, which may decrease the demand for electricity and natural gas or change the market prices of these commodities;
higher fuel taxes or other governmental or regulatory actions that increase, directly or indirectly, the cost of natural gas or other fuel sources for electricity generation or that limit the use of natural gas or the generation of electricity from fossil fuels;
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a shift to more energy-efficient or alternative fuel machinery or an improvement in fuel economy, whether as a result of technological advances by manufacturers, legislation mandating higher fuel economy or lower emissions, price differentials, incentives or otherwise;
a reduction in the state or federal subsidies or tax incentives that are provided to agricultural, industrial or other customers, or a significant sustained change in prices for commodities such as ethanol or corn for ethanol manufacturers; and
sustained mild weather that reduces heating or cooling needs.


Each Registrant's operating results may fluctuate on a seasonal and quarterly basis and may be adversely affected by weather.


In most parts of the United States and other markets in which each Registrant operates, demand for electricity peaks during the summer months when irrigation and cooling needs are higher. Market prices for electricity also generally peak at that time. In other areas, including the western portion of PacifiCorp's service territory, demand for electricity peaks during the winter when heating needs are higher. In addition, demand for natural gas and other fuels generally peaks during the winter. This is especially true in MidAmerican Energy's and Sierra Pacific's retail natural gas businesses. Further, extreme weather conditions, such as heat waves, winter storms or floods could cause these seasonal fluctuations to be more pronounced. Periods of low rainfall or snowpack may negatively impact electricity generation at PacifiCorp's hydroelectric generating facilities, which may result in greater purchases of electricity from the wholesale market or from other sources at market prices. Additionally, PacifiCorp and MidAmerican Energy have added substantial wind-powered generating capacity, and BHE's unregulated subsidiaries are adding solar and wind-powered generating capacity, each of which is also a climate-dependent resource.


As a result, the overall financial results of each Registrant may fluctuate substantially on a seasonal and quarterly basis. Each Registrant has historically provided less service, and consequently earned less income, when weather conditions are mild. Unusually mild weather in the future may adversely affect each Registrant's consolidated financial results through lower revenue or margins. Conversely, unusually extreme weather conditions could increase each Registrant's costs to provide services and could adversely affect its consolidated financial results. The extent of fluctuation in each Registrant's consolidated financial results may change depending on a number of factors related to its regulatory environment and contractual agreements, including its ability to recover energy costs, the existence of revenue sharing provisions as it relates to MidAmerican Energy and Nevada Power, and terms of its wholesale sale contracts.


Each Registrant is subject to market risk associated with the wholesale energy markets, which could adversely affect its consolidated financial results.


In general, each Registrant's primary market risk is adverse fluctuations in the market price of wholesale electricity and fuel, including natural gas, coal and fuel oil, which is compounded by volumetric changes affecting the availability of or demand for electricity and fuel. The market price of wholesale electricity may be influenced by several factors, such as the adequacy or type of generating capacity, scheduled and unscheduled outages of generating facilities, prices and availability of fuel sources for generation, disruptions or constraints to transmission and distribution facilities, weather conditions, demand for electricity, economic growth and changes in technology. Volumetric changes are caused by fluctuations in generation or changes in customer needs that can be due to the weather, electricity and fuel prices, the economy, regulations or customer behavior. For example, the Utilities purchase electricity and fuel in the open market as part of their normal operating businesses. If market prices rise, especially in a time when larger than expected volumes must be purchased at market prices, the Utilities may incur significantly greater expense than anticipated. Likewise, if electricity market prices decline in a period when the Utilities are a net seller of electricity in the wholesale market, the Utilities could earn less revenue. Although the Utilities have energy cost adjustment mechanisms,ECAMs, the risks associated with changes in market prices may not be fully mitigated due to customer sharing bands as it relates to PacifiCorp and other factors.


Potential terrorist activities and the impact of military or other actions, could adversely affect each Registrant's consolidated financial results.


The ongoing threat of terrorism and the impact of military or other actions by nations or politically, ethnically or religiously motivated organizations regionally or globally may create increased political, economic, social and financial market instability, which could subject each Registrant's operations to increased risks. Additionally, the United States government has issued warnings that energy assets, specifically pipeline, nuclear generation, transmission and other electric utility infrastructure, are potential targets for terrorist attacks. Political, economic, social or financial market instability or damage to or interference with the operating assets of the Registrants, customers or suppliers may result in business interruptions, lost revenue, higher commodity prices, disruption in fuel supplies, lower energy consumption and unstable markets, particularly with respect to
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electricity and natural gas, and increased security, repair or other costs, any of which may materially adversely affect each Registrant in ways that cannot be predicted at this time. Any of these risks could materially affect its consolidated financial results. Furthermore, instability in the financial markets as a result of terrorism or war could also materially adversely affect each Registrant's ability to raise capital.



Certain Registrants are subject to the unique risks associated with nuclear generation.


The ownership and operation of nuclear power plants, such as MidAmerican Energy's 25% ownership interest in Quad Cities Station, involves certain risks. These risks include, among other items, mechanical or structural problems, inadequacy or lapses in maintenance protocols, the impairment of reactor operation and safety systems due to human error, the costs of storage, handling and disposal of nuclear materials, compliance with and changes in regulation of nuclear power plants, limitations on the amounts and types of insurance coverage commercially available, and uncertainties with respect to the technological and financial aspects of decommissioning nuclear facilities at the end of their useful lives. Additionally, Exelon Generation, the 75% owner and operator of the facility, may respond to the occurrence of any of these or other risks in a manner that negatively impacts MidAmerican Energy, including closure of Quad Cities Station prior to the expiration of its operating license. The prolonged unavailability, or early closure, of Quad Cities Station due to operational or economic factors could have a materially adverse effect on the relevant Registrant's financial results, particularly when the cost to produce power at the plant is significantly less than market wholesale prices. The following are among the more significant of these risks:
Operational Risk - Operations at any nuclear power plant could degrade to the point where the plant would have to be shut down. If such degradations were to occur, the process of identifying and correcting the causes of the operational downgrade to return the plant to operation could require significant time and expense, resulting in both lost revenue and increased fuel and purchased electricity costs to meet supply commitments. Rather than incurring substantial costs to restart the plant, the plant could be shut down. Furthermore, a shut-down or failure at any other nuclear power plant could cause regulators to require a shut-down or reduced availability at Quad Cities Station.
In addition, issues relating to the disposal of nuclear waste material, including the availability, unavailability and expense of a permanent repository for spent nuclear fuel could adversely impact operations as well as the cost and ability to decommission nuclear power plants, including Quad Cities Station, in the future.


Regulatory Risk - The NRC may modify, suspend or revoke licenses and impose civil penalties for failure to comply with applicable Atomic Energy Act regulations or the terms of the licenses of nuclear facilities. Unless extended, the NRC operating licenses for Quad Cities Station will expire in 2032. Changes in regulations by the NRC could require a substantial increase in capital expenditures or result in increased operating or decommissioning costs.

Nuclear Accident and Catastrophic Risks - Accidents and other unforeseen catastrophic events have occurred at nuclear facilities other than Quad Cities Station, both in the United States and elsewhere, such as at the Fukushima Daiichi nuclear power plant in Japan as a result of the earthquake and tsunami in March 2011. The consequences of an accident or catastrophic event can be severe and include loss of life and property damage. Any resulting liability from a nuclear accident or catastrophic event could exceed the relevant Registrant's resources, including insurance coverage.


Certain of BHE's subsidiaries are subject to the risk that customers will not renew their contracts or that BHE's subsidiaries will be unable to obtain new customers for expanded capacity, each of which could adversely affect its consolidated financial results.


If BHE's subsidiaries are unable to renew, remarket, or find replacements for their customer agreements on favorable terms, BHE's subsidiaries' sales volumes and operating revenue would be exposed to reduction and increased volatility. For example, without the benefit of long-term transportation agreements, BHE cannot assure that the Pipeline Companies will be able to transport natural gas at efficient capacity levels. Substantially all of the Pipeline Companies' revenues are generated under transportation, storage and storageLNG contracts that periodically must be renegotiated and extended or replaced, and the Pipeline Companies are dependent upon relatively few customers for a substantial portion of their revenue. Similarly, without long-term power purchase agreements, BHE cannot assure that its unregulated power generators will be able to operate profitably. Failure to maintain existing long-term agreements or secure new long-term agreements, or being required to discount rates significantly upon renewal or replacement, could adversely affect BHE's consolidated financial results. The replacement of any existing long-term agreements depends on market conditions and other factors that may be beyond BHE's subsidiaries' control.



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Each Registrant is subject to counterparty risk, which could adversely affect its consolidated financial results.


Each Registrant is subject to counterparty credit risk related to contractual payment obligations with wholesale suppliers and customers. Adverse economic conditions or other events affecting counterparties with whom each Registrant conducts business could impair the ability of these counterparties to meet their payment obligations. Each Registrant depends on these counterparties to remit payments on a timely basis. Each Registrant continues to monitor the creditworthiness of its wholesale suppliers and customers in an attempt to reduce the impact of any potential counterparty default. If strategies used to minimize these risk exposures are ineffective or if any Registrant's wholesale suppliers' or customers' financial condition deteriorates or they otherwise become unable to pay, it could have a significant adverse impact on each Registrant's liquidity and its consolidated financial results.


Each Registrant is subject to counterparty performance risk related to performance of contractual obligations by wholesale suppliers, customers and contractors. Each Registrant relies on wholesale suppliers to deliver commodities, primarily natural gas, coal and electricity, in accordance with short- and long-term contracts. Failure or delay by suppliers to provide these commodities pursuant to existing contracts could disrupt the delivery of electricity and require the Utilities to incur additional expenses to meet customer needs. In addition, when these contracts terminate, the Utilities may be unable to purchase the commodities on terms equivalent to the terms of current contracts.


Each Registrant relies on wholesale customers to take delivery of the energy they have committed to purchase. Failure of customers to take delivery may require the relevant Registrant to find other customers to take the energy at lower prices than the original customers committed to pay. If each Registrant's wholesale customers are unable to fulfill their obligations, there may be a significant adverse impact on its consolidated financial results.


The Northern Powergrid Distribution Companies' customers are concentrated in a small number of electricity supply businesses with RWE Npower PLC and British Gas Trading Limited accounting for approximately 21%15% and 15%12%, respectively, of distribution revenue in 2017.2020. AltaLink's primary source of operating revenue is the AESO. Generally, a single customer purchases the energy from BHE's independent power projects in the United States and the Philippines pursuant to long-term power purchase agreements. For example, certain of BHE Renewables' solar and wind independent power projects sell all of their electrical production to either Pacific Gas and Electric Company or Southern California Edison Company, respectively. Any material payment or other performance failure by the counterparties in these arrangements could have a significant adverse impact on BHE's consolidated financial results.


BHE owns investments and projects in foreign countries that are exposed to risks related to fluctuations in foreign currency exchange rates and increased economic, regulatory and political risks.


BHE's business operations and investments outside the United States increase its risk related to fluctuations in foreign currency exchange rates, primarily the British pound and the Canadian dollar. BHE's principal reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from its foreign operations changes with the fluctuations of the currency in which they transact. BHE indirectly owns a hydroelectric power plant in the Philippines and may acquire significant energy-related investments and projects outside of the United States. BHE may selectively reduce some foreign currency exchange rate risk by, among other things, requiring contracted amounts be settled in, or indexed to, United States dollars or a currency freely convertible into United States dollars, or hedging through foreign currency derivatives. These efforts, however, may not be effective and could negatively affect BHE's consolidated financial results.


In addition to any disruption in the global financial markets, the economic, regulatory and political conditions in some of the countries where BHE has operations or is pursuing investment opportunities may present increased risks related to, among others, inflation, foreign currency exchange rate fluctuations, currency repatriation restrictions, nationalization, renegotiation, privatization, availability of financing on suitable terms, customer creditworthiness, construction delays, business interruption, political instability, civil unrest, guerilla activity, terrorism, pandemics (including potentially in relation to COVID-19), expropriation, trade sanctions, contract nullification and changes in law, regulations or tax policy. BHE may not choose to or be capable of either fully insuring against or effectively hedging these risks.



Poor performance of plan and fund investments and other factors impacting the pension and other postretirement benefit plans and nuclear decommissioning and mine reclamation trust funds could unfavorably impact each Registrant's cash flows, liquidity and liquidity.financial results.


Costs of providing each Registrant's defined benefit pension and other postretirement benefit plans and costs associated with the joint trustee plan to which PacifiCorp contributes depend upon a number of factors, including the rates of return on plan assets,
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the level and nature of benefits provided, discount rates, mortality assumptions, the interest rates used to measure required minimum funding levels, the funded status of the plans, changes in benefit design, tax deductibility and funding limits, changes in laws and government regulation and each Registrant's required or voluntary contributions made to the plans. Furthermore, the timing of recognition of unrecognized gains and losses associated with the Registrants' defined benefit pension plans is subject to volatility due to events that may give rise to settlement accounting. Settlement events resulting from lump sum distributions offered by certain of the Registrants' defined benefit pension plans are influenced by the interest rates used to discount a participant's lump sum distribution. When the applicable interest rates are low, lump sum distributions in a given year tend to increase resulting in a higher likelihood of triggering settlement accounting.

Certain of the Registrant's pension and other postretirement benefit plans are in underfunded positions. Even if sustained growth in the investments over future periods increases the value of these plans' assets, eachEach Registrant will likelymay be required to make cash contributions to fund these plans in the future. Additionally, each Registrant's plans have investments in domestic and foreign equity and debt securities and other investments that are subject to loss. Losses from investments could add to the volatility, size and timing of future contributions.


Furthermore, the funded status of the UMWA 1974 Pension Plan multiemployer plan to which PacifiCorp's subsidiary previously contributed is considered critical and declining. PacifiCorp's subsidiary involuntarily withdrew from the UMWA 1974 Pension Plan in June 2015 when the UMWA employees ceased performing work for the subsidiary. PacifiCorp has recorded its best estimate of the withdrawal obligation. If participating employers withdraw from a multiemployer plan, the unfunded obligations of the plan may be borne by the remaining participating employers, including any employers that withdrew during the three years prior to a mass withdrawal.


In addition, MidAmerican Energy is required to fund over time the projected costs of decommissioning Quad Cities Station, a nuclear power plant, and Bridger Coal Company, a joint venture of PacifiCorp's subsidiary, Pacific Minerals, Inc., is required to fund projected mine reclamation costs. FundsThe funds that MidAmerican Energy has invested in a nuclear decommissioning trust and a subsidiary of PacifiCorp has invested in a mine reclamation trust are invested in debt and equity securities and poor performance of these investments will reduce the amount of funds available for their intended purpose, which could require MidAmerican Energy or PacifiCorpPacifiCorp's subsidiary to make additional cash contributions. As contributions to the trust are being made over the operating life of the respective facility, reductions in the expected operating life of the facility could also require MidAmerican Energy and PacifiCorp's subsidiary to make additional contributions to the related trust. Such cash funding obligations, which are also impacted by the other factors described above, could have a material impact on MidAmerican Energy's or PacifiCorp's liquidity by reducing their available cash.


Inflation and changes in commodity prices and fuel transportation costs may adversely affect each Registrant's consolidated financial results.


Inflation and increases in commodity prices and fuel transportation costs may affect each Registrant by increasing both operating and capital costs. As a result of existing rate agreements, contractual arrangements or competitive price pressures, each Registrant may not be able to pass the costs of inflation on to its customers. If each Registrant is unable to manage cost increases or pass them on to its customers, its consolidated financial results could be adversely affected.


Cyclical fluctuations and competition in the residential real estate brokerage and mortgage businesses could adversely affect HomeServices.


The residential real estate brokerage and mortgage industries tend to experience cycles of greater and lesser activity and profitability and are typically affected by changes in economic conditions, which are beyond HomeServices' control. Any of the following, among others, are examples of items that could have a material adverse effect on HomeServices' businesses by causing a general decline in the number of home sales, sale prices or the number of home financings which, in turn, would adversely affect its financial results:
rising interest rates or unemployment rates, including a sustained high unemployment rate in the United States;
periods of economic slowdown or recession in the markets served;served or the adverse effects on market actions as a result of the actual or potential spread of COVID-19;
decreasing home affordability;
lack of available mortgage credit for potential homebuyers, such as the reduced availability of credit, which may continue into future periods;
inadequate home inventory levels;
nontraditional sources of new competition; and
changes in applicable tax law.

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Disruptions in the financial markets could affect each Registrant's ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on each Registrant.


Disruptions in the financial markets could affect each Registrant's ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on each Registrant. Significant dislocations and liquidity disruptions in the United States, Great Britain, Canada and global credit markets, such as those that occurred in 2008 and 2009, may materially impact liquidity in the bank and debt capital markets, making financing terms less attractive for borrowers that are able to find financing and, in other cases, may cause certain types of debt financing, or any financing, to be unavailable. Additionally, economic uncertainty in the United States or globally may adversely affect the United States' credit markets and could negatively impact each Registrant's ability to access funds on favorable terms or at all. If eacha Registrant is unable to access the bank and debt markets to meet liquidity and capital expenditure needs, it may adversely affect the timing and amount of its capital expenditures, acquisition financing and its consolidated financial results.


Potential changes in accounting standards may impact each Registrant's consolidated financial results and disclosures in the future, which may change the way analysts measure each Registrant's business or financial performance.


The Financial Accounting Standards Board ("FASB") and the SEC continuously make changes to accounting standards and disclosure and other financial reporting requirements. New or revised accounting standards and requirements issued by the FASB or the SEC or new accounting orders issued by the FERC could significantly impact each Registrant's consolidated financial results and disclosures. For example, beginning in 2018 all changes in the fair values of equity securities (whether realized or unrealized) will beare recognized as gains or losses in the relevant Registrant's consolidated financial statements. Accordingly, periodic changes in such Registrant's reported net income will likely be subject to significant variability.


Each Registrant is involved in a variety of legal proceedings, the outcomes of which are uncertain and could adversely affect its consolidated financial results.


Each Registrant is, and in the future may become, a party to a variety of legal proceedings. Litigation is subject to many uncertainties, and the Registrants cannot predict the outcome of individual matters with certainty. It is possible that the final resolution of some of the matters in which each Registrant is involved could result in additional material payments substantially in excess of established reservesliabilities or in terms that could require each Registrant to change business practices and procedures or divest ownership of assets. Further, litigation could result in the imposition of financial penalties or injunctions and adverse regulatory consequences, any of which could limit each Registrant's ability to take certain desired actions or the denial of needed permits, licenses or regulatory authority to conduct its business, including the siting or permitting of facilities. Any of these outcomes could have a material adverse effect on such Registrant's consolidated financial results.


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Item 1B.Unresolved Staff Comments



Item 1B.Unresolved Staff Comments

Not applicable.



Item 2.Properties


Each Registrant's energy properties consist of the physical assets necessary to support its applicable electricity and natural gas businesses. Properties of the relevant Registrant's electricity businesses include electric generation, transmission and distribution facilities, as well as coal mining assets that support certain of PacifiCorp's electric generating facilities. Properties of the relevant Registrant's natural gas businesses include natural gas distribution facilities, interstate pipelines, storage facilities, liquefied natural gas facilities, compressor stations and meter stations. The transmission and distribution assets are primarily within each Registrant's service territories. In addition to these physical assets, the Registrants have rights-of-way, mineral rights and water rights that enable each Registrant to utilize its facilities. It is the opinion of each Registrant's management that the principal depreciable properties owned by it are in good operating condition and are well maintained. Pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties, MidAmerican Energy's electric utility properties in the state of Iowa, Nevada Power's and Sierra Pacific's properties in the state of Nevada, ALP'sAltaLink's transmission properties and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of generation projects are pledged or encumbered to support or otherwise provide the security for the related subsidiary debt. For additional information regarding each Registrant's energy properties, refer to Item 1 of this Form 10-K and Notes 4, 5 and 2122 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K, Notes 43 and 54 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of Nevada Power in Item 8 of this Form 10-K, and Notes 3 and 4 of the Notes to Consolidated Financial Statements of Sierra Pacific in Item 8 of this Form 10-K and Notes 4 and 5 of the Notes to Consolidated Financial Statements of Eastern Energy Gas in Item 8 of this Form 10-K.


The following table summarizes Berkshire Hathaway Energy's operating electric generating facilities that are in operation as of December 31, 2017:2020:
Facility NetNet Owned
EnergyCapacityCapacity
SourceEntityLocation by Significance(MWs)(MWs)
Natural gasPacifiCorp, MidAmerican Energy, NV Energy and BHE RenewablesNevada, Utah, Iowa, Illinois, Washington, Wyoming, Oregon, Texas, New York and Arizona11,17110,892
WindPacifiCorp, MidAmerican Energy and BHE RenewablesIowa, Wyoming, Texas, Nebraska, Washington, California, Illinois, Oregon, Kansas and Montana10,30210,302
CoalPacifiCorp, MidAmerican Energy and NV EnergyWyoming, Iowa, Utah, Nevada, Colorado and Montana13,2498,198
SolarBHE Renewables and NV EnergyCalifornia, Texas, Arizona, Minnesota and Nevada1,6991,551
HydroelectricPacifiCorp, MidAmerican Energy and BHE RenewablesWashington, Oregon, The Philippines, Idaho, California, Utah, Hawaii, Montana, Illinois and Wyoming1,2991,277
NuclearMidAmerican EnergyIllinois1,815454
GeothermalPacifiCorp and BHE RenewablesCalifornia and Utah377377
Total39,91233,051
      Facility Net Net Owned
Energy     Capacity Capacity
Source Entity Location by Significance (MW) (MW)
         
Natural gas PacifiCorp, MidAmerican Energy, NV Energy and BHE Renewables Nevada, Utah, Iowa, Illinois, Washington, Oregon, Texas, New York and Arizona 10,919 10,640
         
Coal PacifiCorp, MidAmerican Energy and NV Energy Wyoming, Iowa, Utah, Arizona, Nevada, Colorado and Montana 16,232 9,158
         
Wind PacifiCorp, MidAmerican Energy and BHE Renewables Iowa, Wyoming, Nebraska, Washington, California, Texas, Oregon, Illinois and Kansas 6,533 6,524
         
Solar BHE Renewables and NV Energy California, Texas, Arizona, Minnesota and Nevada 1,675 1,527
         
Hydroelectric 
PacifiCorp, MidAmerican Energy
 and BHE Renewables
 Washington, Oregon, The Philippines, Idaho, California, Utah, Hawaii, Montana, Illinois and Wyoming 1,299 1,277
         
Nuclear MidAmerican Energy Illinois 1,820 455
         
Geothermal PacifiCorp and BHE Renewables California and Utah 370 370
         
    Total 38,848 29,951


Additionally, as of December 31, 2020 the Company has electric generating facilities that are under construction in Iowa, IllinoisWyoming and Minnesota as of December 31, 2017Montana having total Facility Net Capacity and Net Owned Capacity of 1,902 MW.603 MWs.



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The right to construct and operate each Registrant's electric transmission and distribution facilities and interstate natural gas pipelines across certain property was obtained in most circumstances through negotiations and, where necessary, through prescription, eminent domain or similar rights. PacifiCorp, MidAmerican Energy, Nevada Power, Sierra Pacific, BHE GT&S, Northern Natural Gas and Kern River in the United States; Northern Powergrid (Northeast) Limitedplc and Northern Powergrid (Yorkshire) plc in Great Britain; and ALPAltaLink in Alberta, Canada continue to have the power of eminent domain or similar rights in each of the jurisdictions in which they operate their respective facilities, but the United States and Canadian utilities do not have the power of eminent domain with respect to governmental, Native American or Canadian First Nations' tribal lands. Although the main Kern River pipeline crosses the Moapa Indian Reservation, all facilities in the Moapa Indian Reservation are located within a utility corridor that is reserved to the United States Department of Interior, Bureau of Land Management.


With respect to real property, each of the electric transmission and distribution facilities and interstate natural gas pipelines fall into two basic categories: (1) parcels that are owned in fee, such as certain of the electric generating facilities, electric substations, natural gas compressor stations, natural gas meter stations and office sites; and (2) parcels where the interest derives from leases, easements (including prescriptive easements), rights-of-way, permits or licenses from landowners or governmental authorities permitting the use of such land for the construction, operation and maintenance of the electric transmission and distribution facilities and interstate natural gas pipelines. Each Registrant believes it has satisfactory title or interest to all of the real property making up their respective facilities in all material respects.


Item 3.Legal Proceedings


Each Registrant is partyPacifiCorp

On September 30, 2020, a putative class action complaint against PacifiCorp was filed, captioned Jeanyne James et. al. vs. PacifiCorp, Case No. 20cv33885, Circuit Court, Multnomah County, Oregon. The complaint was filed on behalf of certain named Oregon residents and businesses and all Oregon citizens and entities whose real or personal property was harmed by wildfires in Oregon beginning on or after September 7, 2020. The complaint alleges that PacifiCorp's assets contributed to the Oregon wildfires occurring on or after September 7, 2020 and that PacifiCorp acted with gross negligence, among other things. The complaint was amended November 2, 2020 to seek the following damages: (i) damages for real and personal property and other economic losses in excess of $600 million; (ii) double the amount of property and economic damages based on alleged gross negligence; (iii) treble damages for specific costs associated with loss of timber, trees and shrubbery; (iv) double the damages for the costs of litigation and reforestation; and (v) prejudgment interest. The plaintiffs demand a variety of legal actions arising outtrial by jury and have reserved their right to amend the complaint to allege claims for punitive damages. Other individual lawsuits alleging similar claims have been filed in Oregon related to the 2020 wildfires. Investigations as to the cause and origin of the normal coursewildfires are ongoing.

For more information regarding certain legal proceedings affecting PacifiCorp, refer to Note 14 of business. Plaintiffs occasionally seek punitive or exemplary damages. Each Registrant does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Each Registrant is also involvedthe Notes to Consolidated Financial Statements of PacifiCorp in other kindsPart II, Item 8 of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts.this Form 10-K.


Item 4.Mine Safety Disclosures

Item 4.Mine Safety Disclosures

Information regarding Berkshire Hathaway Energy's and PacifiCorp's mine safety violations and other legal matters disclosed in accordance with Section 1503(a) of the Dodd-Frank Reform Act is included in Exhibit 95 to this Form 10-K.



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PART II


Item 5.Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Item 5.Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

BERKSHIRE HATHAWAY ENERGY


BHE's common stock is beneficially owned by Berkshire Hathaway, Mr. Walter Scott, Jr., a member of BHE's Board of Directors (along with his family members and related or affiliated entities) and Mr. Gregory E. Abel, BHE's Executive Chairman, and has not been registered with the SEC pursuant to the Securities Act of 1933, as amended, listed on a stock exchange or otherwise publicly held or traded. BHE has not declared or paid any cash dividends to its common shareholders since Berkshire Hathaway acquired an equity ownership interest in BHE in March 2000 and does not presently anticipate that it will declare any dividends on its common stock in the foreseeable future.

For a discussion of restrictions that limit BHE's and its subsidiaries' ability to pay dividends on their common stock, refer to Note 17 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K.


PACIFICORP


All common stock of PacifiCorp is held by its parent company, PPW Holdings LLC, which is a direct, wholly owned subsidiary of BHE. PacifiCorp declared and paid dividends to PPW Holdings LLC of $600$— million in 20172020 and $875$175 million in 2016.2019.


For a discussion of regulatory restrictions that limit PacifiCorp's ability to pay dividends on common stock, refer to "Limitations" in PacifiCorp's Item 7 in this Form 10-K and to Note 15 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K.

MIDAMERICAN FUNDING AND MIDAMERICAN ENERGY


All common stock of MidAmerican Energy is held by its parent company, MHC, which is a direct, wholly owned subsidiary of MidAmerican Funding. MidAmerican Funding is an Iowa limited liability company whose membership interest is held solely by BHE. Neither MidAmerican Funding ornor MidAmerican Energy declared or paid any cash distributions or dividends to its sole member or shareholder in 20172020 and 2016.2019.


For a discussion of regulatory restrictions that limit MidAmerican Energy's ability to pay dividends on common stock, refer to "Debt Authorizations and Related Matters" in MidAmerican Energy's Item 7 in this Form 10-K and to Note 9 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K.

NEVADA POWER


All common stock of Nevada Power is held by its parent company, NV Energy, which is an indirect, wholly owned subsidiary of BHE. Nevada Power declared and paid dividends to NV Energy of $548$155 million in 20172020 and $469$371 million in 2016.2019.


SIERRA PACIFIC


All common stock of Sierra Pacific is held by its parent company, NV Energy, which is an indirect, wholly owned subsidiary of BHE. Sierra Pacific declared and paid dividends to NV Energy of $45$20 million in 20172020 and $51$46 million in 2016.2019.



EASTERN ENERGY GAS

Eastern Energy Gas is a Virginia limited liability corporation whose membership interest is held solely by its parent company, BHE GT&S, which is an indirect, wholly owned subsidiary of BHE. Eastern Energy Gas did not declare or pay cash distributions to BHE GT&S in 2020. Eastern Energy Gas declared and paid cash distributions to DEI of $4.3 billion in 2020 and $457 million in 2019.
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Item 6.Selected Financial Data
Item 6.Selected Financial Data
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries


Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations
Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries


Item 7A.Quantitative and Qualitative Disclosures About Market Risk
Item 7A.Quantitative and Qualitative Disclosures About Market Risk
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries



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Item 8.Financial Statements and Supplementary Data
Item 8.Financial Statements and Supplementary Data
Berkshire Hathaway Energy Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
PacifiCorp and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Shareholders' Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
MidAmerican Energy Company
Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations
Statements of Comprehensive Income
Statements of Changes in Shareholder's Equity
Statements of Cash Flows
Notes to Financial Statements
MidAmerican Funding, LLC and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Member's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Nevada Power Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Shareholder's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Sierra Pacific Power Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Shareholder's Equity
Statements of Cash Flows
Notes to Financial Statements
Eastern Energy Gas Holdings, LLC and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

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Berkshire Hathaway Energy Company and its subsidiaries
Consolidated Financial Section

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Item 6.Selected Financial Data



Item 6.Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.


Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of the Company during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with Item 6 of this Form 10-K and with the Company's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. The Company's actual results in the future could differ significantly from the historical results.


The reportable segment financial information includes all necessary adjustments and eliminations needed to conform to the Company's significant accounting policies. The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, corporate functions and intersegment eliminations.


Results of Operations


Overview


Net income and operating revenue for the Company's reportable segments for the years ended December 31 isare summarized as follows (in millions):

20202019Change20192018Change
Operating revenue:Operating revenue:
PacifiCorpPacifiCorp$5,341 $5,068 $273 %$5,068 $5,026 $42 %
MidAmerican FundingMidAmerican Funding2,728 2,927 (199)(7)2,927 3,053 (126)(4)
NV EnergyNV Energy2,854 3,037 (183)(6)3,037 3,039 (2)— 
Northern PowergridNorthern Powergrid1,022 1,013 1,013 1,020 (7)(1)
BHE Pipeline GroupBHE Pipeline Group1,578 1,131 447 40 1,131 1,203 (72)(6)
BHE TransmissionBHE Transmission659 707 (48)(7)707 710 (3)— 
BHE RenewablesBHE Renewables936 932 — 932 908 24 
HomeServicesHomeServices5,396 4,473 923 21 4,473 4,214 259 
BHE and OtherBHE and Other438 556 (118)(21)556 614 (58)(9)
Total operating revenueTotal operating revenue$20,952 $19,844 $1,108 %$19,844 $19,787 $57 — %
2017 2016 Change 2016 2015 Change
Net income attributable to BHE shareholders:               Net income attributable to BHE shareholders:
PacifiCorp$769
 $764
 $5
 1 % $764
 $697
 $67
 10 %PacifiCorp$741 $773 $(32)(4)%$773 $739 $34 %
MidAmerican Funding574
 532
 42
 8
 532
 442
 90
 20
MidAmerican Funding818 781 37 781 669 112 17 
NV Energy346
 359
 (13) (4) 359
 379
 (20) (5)NV Energy410 365 45 12 365 317 48 15 
Northern Powergrid251
 342
 (91) (27) 342
 422
 (80) (19)Northern Powergrid201 256 (55)(21)256 239 17 
BHE Pipeline Group277
 249
 28
 11
 249
 243
 6
 2
BHE Pipeline Group528 422 106 25 422 387 35 
BHE Transmission224
 214
 10
 5
 214
 186
 28
 15BHE Transmission231 229 229 210 19 
BHE Renewables(1)
864
 179
 685
 *
 179
 124
 55
 44
BHE Renewables(1)
521 431 90 21 431 329 102 31 
HomeServices149
 127
 22
 17
 127
 104
 23
 22
HomeServices375 160 215 *160 145 15 10 
BHE and Other(584) (224) (360) *
 (224) (227) 3
 1
BHE and Other3,118 (467)3,585 *(467)(467)— — 
Total net income attributable to BHE shareholders$2,870
 $2,542
 $328
 13
 $2,542
 $2,370
 $172
 7
Total net income attributable to BHE shareholders$6,943 $2,950 $3,993 *$2,950 $2,568 $382 15 %


(1)Includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

*    Not meaningfulmeaningful.

104
(1)Includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.



Net income attributable to BHE shareholders increased $328$3,993 million for 20172020 compared to 2016,2019. Included in these results was a pre-tax unrealized gain of $4,774 million ($3,470 million after-tax) compared to a pre-tax unrealized loss in 2019 of $313 million ($227 million after-tax) on the Company's investment in BYD Company Limited. Excluding the impact of this item, adjusted net income attributable to BHE shareholders in 2020 was $3,473 million, an increase of $296 million, or 9%, compared to adjusted net income attributable to BHE shareholders in 2019 of $3,177 million.

The increase in net income attributable to BHE shareholders for 2020 compared to 2019 was primarily due to:

$50 million higher net income at the Utilities with favorable performance at all four utilities (actual retail customer sales volumes increased 74 GWhs, or 0.1%), including $193 million of higher PTCs recognized, offset by a $516comparative increase in wildfire and other storm restoration costs, primarily at PacifiCorp;
$106 million higher net income at BHE Pipeline Group, primarily due to $73 million of incremental net income from the GT&S Transaction and a favorable rate case settlement at Northern Natural Gas;
$55 million lower net income at Northern Powergrid, mainly due to a deferred income tax charge in 2020 from a change in the United Kingdom corporate income tax rate;
$90 million higher net income at BHE Renewables, primarily due to increased income tax benefits from renewable wind tax equity investments, largely from projects reaching commercial operation, offset by lower earnings from geothermal and natural gas facilities;
$215 million higher net income at HomeServices, primarily due to higher earnings from mortgage services (71% increase in funded mortgage volume) and brokerage services (13% increase in closed transaction volume) largely attributable to the favorable interest rate environment; and
$3,585 higher net income at BHE and Other due to the $3,697 million change in the after-tax unrealized position of the Company's investment in BYD Company Limited offset by higher BHE corporate interest expense and unfavorable comparative consolidated state income tax benefits.
Net income attributable to BHE shareholders increased $382 million for 2019 compared to 2018. Included in these results were pre-tax unrealized losses on the Company's investment in BYD Company Limited ($313 million, $227 million after-tax, in 2019 and $526 million, $383 million after-tax, in 2018) and a $134 million income tax benefit in 2018 related to the accrued repatriation tax on undistributed foreign earnings as a result of 2017 Tax Reform, partially offset by a charge of $263 million from tender offers for certain long-term debt completed in December 2017.Reform. Excluding the impacts of these items, adjusted net income attributable to BHE shareholders in 2019 was $2,617$3,177 million, an increase of $75$360 million, or 13%, compared to 2016.adjusted net income attributable to BHE shareholders in 2018 of $2,817 million.



The increase in net income attributable to BHE shareholders for 2019 compared to 2018 was primarily due to the following with such explanations excluding the impacts of DSM and energy efficiency programs having no impact on net income:to:


PacifiCorp's$194 million higher net income at the Utilities with favorable performance at all four utilities (actual retail customer sales volumes increased $5 million,74 GWhs, or 0.1%), including $6$49 million of income from 2017 Tax Reform. Excluding the impact of 2017 Tax Reform, adjustedhigher PTCs recognized;
$35 million higher net income was $763 million, a decrease of $1 million compared to 2016,at BHE Pipeline Group, primarily due to higher depreciationtransportation revenue; and amortization of $26
$102 million from additional plant placed in-service, lower AFUDC of $11 million, lower production tax credits of $11 million and higher property and other taxes of $7 million, partially offset by higher gross margins of $72 million. Gross margins increased due to higher retail customer volumes, lower natural gas-fueled generation, higher wholesale revenue and higher wheeling revenue, partially offset by higher purchased electricity costs, lower average retail rates and higher coal costs. Retail customer volumes increased 1.7% due to favorable impacts of weather across the service territory, higher commercial usage and an increase in the average number of residential and commercial customers primarily in Utah and Oregon, partially offset by lower residential usage in Utah and Oregon and lower irrigation usage.
MidAmerican Funding's net income increased $42 million, including after-tax charges of $17 million related to the tender offer of a portion of MidAmerican Funding's 6.927% Senior Bonds due 2029 and $10 million for 2017 Tax Reform. Excluding the impacts of these items, adjusted net income was $601 million, an increase of $69 million compared to 2016,at BHE Renewables, primarily due to a higher income tax benefitimproved earnings from higher production tax credits of $38 million, the effects of ratemaking and lower pre-tax income, and higher electric gross margins of $76 million, partially offset by higher maintenance expense of $52 million due to additional wind-powered generating facilities and the timing of fossil-fueled generation maintenance, higher depreciation and amortization of $21 million due to wind-powered generation and other plant placed in-service and accruals for Iowa regulatory arrangements, partially offset by a December 2016 reduction in depreciation rates, and higher property and other taxes of $7 million. Electric gross marginsrenewable wind projects, including increased due to higher recoveries through bill riders, higher retail customer volumes, higher wholesale revenue and higher transmission revenue, partially offset by higher coal and purchased power costs. Retail customer volumes increased 2.4% due to industrial growth net of lower residential and commercial volumes from milder temperatures.
NV Energy's net income decreased $13 million, including a charge of $19 million from 2017 Tax Reform. Excluding the impact of 2017 Tax Reform, adjusted net income was $365 million, an increase of $6 million compared to 2016, primarily due to higher electric gross margins of $20 million and lower interest expense of $17 million from lower deferred charges and lower rates on outstanding debt balances, partially offset by $28 million of charges related to the Nevada Power regulatory rate order. Electric gross margins increased due to higher retail customer volumes, partially offset by a decrease in wholesale revenues. Retail customer volumes increased 1.5% due to customer usage patterns, higher customer demand from the impacts of weather and an increase in the average number of customers.
Northern Powergrid's net income decreased $91 million due to higher income tax expense of $35 million primarily due to $39 million of benefits from the resolution of income tax return claims in 2016 and $17 million of deferred income tax benefits reflected in 2016 due to a 1% reduction in the United Kingdom corporate income tax rate, higher pension expense of $24 million, including the impact of settlement losses recognized in 2017 due to higher lump sum payments, lower distribution revenue of $23 million and the stronger United States dollar of $11 million. These decreases were partially offset by $19 million of asset provisions recognized in 2016 at the CE Gas business. Distribution revenue decreased due to lower units distributed, the recovery in 2016 of the December 2013 customer rebate and unfavorable movements in regulatory provisions, partially offset by higher tariff rates.
BHE Pipeline Group's net income increased $28 million, including $7 million of income from 2017 Tax Reform. Excluding the impact of 2017 Tax Reform, adjusted net income was $270 million, an increase of $21 million compared to 2016, primarily due to a reduction in expenses and regulatory liabilities related to the impact of an alternative rate structure approved by the FERC at Kern River and higher transportation and storage revenues at Northern Natural Gas, partially offset by lower transportation revenue at Kern River and higher operating expense at Northern Natural Gas.
BHE Transmission's net income increased $10 million from higher earnings at AltaLink of $18 million, partially offset by lower earnings at BHE U.S. Transmission of $8 million. Earnings at AltaLink increased primarily due to additional assets placed in-service, lower impairments of nonregulated natural gas-fueled generation assets of $21 million and the weaker United States dollar of $3 million, partially offset by more favorable regulatory decisions in 2016. BHE U.S. Transmission's earnings decreased primarily due to lower equity earnings at Electric Transmission Texas, LLC from the impacts of a regulatory rate order in March 2017.
BHE Renewables' net income increased $685 million, including $628 million of income from 2017 Tax Reform primarily resulting from reductions in deferred income tax liabilities. Excluding the impact of 2017 Tax Reform, adjusted net income was $236 million, an increase of $57 million compared to 2016, primarily due to additionalrenewable wind and solar capacity placed in-service, higher generation at the Solar Star projects due to transformer related forced outages in 2016 and higher production at the Casecnan project due to higher rainfall.

HomeServices' net income increased $22 million, including $31 million of income from 2017 Tax Reform. Excluding the impact of 2017 Tax Reform, adjusted net income was $118 million, a decrease of $9 million compared to 2016, primarily due to lower earnings at acquired and existing brokerage businesses, partially offset by higher earnings at existing franchise businesses.
BHE and Other net loss increased $360 million, including after-tax charges of $246 million related to the tender offer of a portion of BHE's senior bonds and $127 million for 2017 Tax Reform. Excluding the impacts of these items, the adjusted net loss was $211 million, an improvement of $13 million compared to 2016. The $127 million of net loss from 2017 Tax Reform included an accrual for the deemed repatriation of undistributed foreign earnings and profits totaling $419 million, partially offset by $292 million of benefits from reductions in deferred income tax liabilities primarily related to the unrealized gain on the investment in BYD Company Limited.
Net income attributable to BHE shareholders increased $172 million for 2016 compared to 2015 due to the following:
PacifiCorp's net income increased $67 million due to higher gross margins of $86 million, lower operations and maintenance expenses of $18 million, and higher production tax credits of $8 million, partially offset by higher depreciation and amortization of $13 million, lower AFUDC of $9 million and higher property taxes of $5 million. Gross margins increased primarily due to lower purchased electricity costs, higher retail rates, lower coal-fueled generation and lower natural gas costs, partially offset by lower wholesale electricity revenue from lower volumes and prices. Retail customer volumes decreased by 0.6% due to lower commercial customer usage in Utah and lower industrial customer usage primarily in Utah and Oregon, partially offset by an increase in the average number of residential customers in Utah and Oregon and commercial customers in Utah and the impacts of weather on residential customer volumes.
MidAmerican Funding's net income increased $90 million due to higher electric gross margins of $172 million, higher production tax credits of $39 million and lower fossil-fueled generation operations and maintenance of $35 million, partially offset by higher depreciation and amortization of $72 million from wind-powered generation and other plant placed in-service and an accrual related to an Iowa regulatory revenue sharing arrangement, a pre-tax gain of $13 million in 2015 on the sale of a generating facility lease, higher interest expense of $12 million and higher income taxes from the effects of ratemaking and higher pre-tax income. Electric gross margins reflect higher retail sales volumes, higher retail rates in Iowa, lower energy costs, higher wholesale revenue and higher transmission revenue.
NV Energy's net income decreased $20 million due to higher operating expense of $27 million, higher depreciation and amortization of $11 million due to higher plant in-service and lower electric gross margins of $2 million, partially offset by lower interest expense of $12 million. Operating expense increased due to benefits from changes in contingent liabilities in 2015 and regulatory disallowances in 2016. Electric gross margins decreased primarily due to lower transmission and wholesale revenue and lower customer usage offset by higher customer growth.
Northern Powergrid's net income decreased $80 million due to the stronger United States dollar of $47 million, lower distribution revenues mainly due to the recovery in 2015 of the December 2013 customer rebate and unfavorable movements in regulatory provisions, higher depreciation of $25 million from additional assets placed in service, higher write-offs of hydrocarbon well exploration costs of $15 million and higher interest expense of $7 million. These adverse variances were partially offset by higher smart meter revenue, lower operating expenses and lower income tax expense primarily due to the resolution of income tax return claims from prior years partially offset by decreased deferred income tax benefits due to a 1% reduction in the United Kingdom corporate income tax rate in 2016 compared to a 2% reduction in 2015.
BHE Pipeline Group's net income increased $6 million due to higher storage revenues, lower operating expenses and lower interest expense due to the early redemption in December 2015 of the 6.667% Senior Notes at Kern River, partially offset by lower transportation revenues and higher depreciation expense.
BHE Transmission's net income increased $28 million from higher earnings at AltaLink of $22 million and at BHE U.S. Transmission of $6 million. Earnings at AltaLink increased primarily due to additional assets placed in-service and favorable regulatory decisions, partially offset by a $26 million pre-tax impairment related to nonregulated natural gas-fueled generation assets and the stronger United States dollar of $5 million. BHE U.S. Transmission's earnings improved primarily from higher equity earnings at Electric Transmission Texas, LLC from continued investment and additional plant placed in-service.
BHE Renewables' net income increased $55 million due to three tax equity investments largely from projects reaching commercial operations in 2016 and higher production at wind projects, including additional capacity placed in-service in 2016 at two projects, partially offset by lower solar revenues mainly due to forced outages and higher depreciation expense due to additional wind and solar capacity placed in-service.

HomeServices' net income increased $23 million due to a 9% increase in closed brokerage units, primarily due to acquired brokerage businesses, a 2% increase in average home sales pricesoperation, and higher earnings at existing mortgagefrom geothermal and franchise businesses.natural gas facilities.
BHE and Other net loss improved $3 million due to lower interest expense, an increase in consolidated deferred state income tax benefits and higher investment returns, partially offset by higher United States income taxes on foreign earnings.
105



Reportable Segment Results

Operating revenue and operating income for the Company's reportable segments for the years ended December 31 are summarized as follows (in millions):
 2017 2016 Change 2016 2015 Change
Operating revenue:               
PacifiCorp$5,237
 $5,201
 $36
 1 % $5,201
 $5,232
 $(31) (1)%
MidAmerican Funding2,846
 2,631
 215
 8
 2,631
 2,515
 116
 5
NV Energy3,015
 2,895
 120
 4
 2,895
 3,351
 (456) (14)
Northern Powergrid949
 995
 (46) (5) 995
 1,140
 (145) (13)
BHE Pipeline Group993
 978
 15
 2
 978
 1,016
 (38) (4)
BHE Transmission699
 502
 197
 39
 502
 592
 (90) (15)
BHE Renewables838
 743
 95
 13
 743
 728
 15
 2
HomeServices3,443
 2,801
 642
 23
 2,801
 2,526
 275
 11
BHE and Other594
 676
 (82) (12) 676
 780
 (104) (13)
Total operating revenue$18,614
 $17,422
 $1,192
 7
 $17,422
 $17,880
 $(458) (3)
                
Operating income:               
PacifiCorp$1,462
 $1,427
 $35
 2 % $1,427
 $1,344
 $83
 6 %
MidAmerican Funding562
 566
 (4) (1) 566
 451
 115
 25
NV Energy765
 770
 (5) (1) 770
 812
 (42) (5)
Northern Powergrid436
 494
 (58) (12) 494
 593
 (99) (17)
BHE Pipeline Group475
 455
 20
 4
 455
 464
 (9) (2)
BHE Transmission322
 92
 230
 * 92
 260
 (168) (65)
BHE Renewables316
 256
 60
 23
 256
 255
 1
 
HomeServices214
 212
 2
 1
 212
 184
 28
 15
BHE and Other(38) (21) (17) (81) (21) (35) 14
 40
Total operating income$4,514
 $4,251
 $263
 6
 $4,251
 $4,328
 $(77) (2)

* Not meaningful


PacifiCorp


Operating revenue increased $36$273 million for 20172020 compared to 20162019 due to higher retail revenue of $250 million and higher wholesale and other revenue of $50$23 million. Retail revenue increased primarily due to $234 million from the amortization of certain existing regulatory balances to offset the accelerated depreciation of certain property, plant and equipment and the accelerated amortization of certain regulatory asset balances in relation to Utah and Oregon general rate case orders issued in December 2020. The increase in retail revenue was also due to price impacts of $49 million from changes in sales mix, partially offset by lower retail revenuecustomer volumes of $14$34 million. WholesaleThe increase in wholesale and other revenue increasedwas mainly due to higher wholesale sales volumes and short-term market prices and higher wheeling revenue. Retail revenue decreased due$34 million from the amortization of certain existing regulatory balances in Oregon to lower average ratesoffset the accelerated depreciation of $64 million and lower DSM program revenue (offset in operating expense) of $55 million, primarily driven by the establishment of the Utah Sustainable Transportation and Energy Plan program,certain retired wind equipment, partially offset by higher customer volumes of $105 million.lower wholesale volumes. Retail customer volumes increased 1.7%decreased 1.4% primarily due to the impacts of weather across the service territory,COVID-19, which resulted in lower industrial and commercial customer usage and higher commercialresidential customer usage, andpartially offset by an increase in the average number of residential and commercial customers and the favorable impact of weather.

Net income decreased $32 million for 2020 compared to 2019, primarily due to an increase in Utahoperations and Oregon,maintenance expense due to higher costs associated with wildfires and the Klamath Hydroelectric Settlement Agreement of $169 million, higher interest expense of $25 million from higher long-term debt balances, higher pension and other postretirement costs of $13 million, lower interest income from lower average interest rates and higher property taxes of $10 million, partially offset by lower residential usagetax expense from higher PTCs recognized of $62 million from repowered and new wind-powered generating facilities, higher utility margin of $47 million and higher allowances for equity and borrowed funds used during construction of $38 million. Utility margin increased primarily due to lower coal-fueled and natural gas-fueled generation costs, lower purchased power costs and price impacts from changes in Utah and Oregonsales mix, partially offset by lower net deferrals of incurred net power costs in accordance with established adjustment mechanisms and lower irrigation usage.retail customer volumes.


Operating incomerevenue increased $35$42 million for 20172019 compared to 20162018 due to higher gross marginsretail revenue of $72$40 million excludingand higher wholesale and other revenue of $2 million. Retail revenue increased primarily due to higher customer volumes of $31 million and higher average retail rates of $9 million. Retail customer volumes increased 0.4% primarily due to an increase in the average number of residential and commercial customers and the favorable impact of a decrease in DSM programweather, partially offset by lower customer usage. Wholesale and other revenue (offset in operating expense)increased primarily due to higher wholesale average market prices, largely offset by lower wholesale volumes.

Net income increased $34 million for 2019 compared to 2018, primarily due to higher allowances for equity and borrowed funds used during construction of $55 million, lower pension and post retirement expense of $11 million and higher utility margin of $4 million, partially offset by higher depreciation and amortization expense of $26$25 million from additional plant placed in-service, lower PTCs of $21 million from expirations, higher interest expense of $17 million and higher propertyoperations and other taxesmaintenance expense of $7 million. Gross margins increased$10 million, primarily due to costs associated with the early retirement of a coal-fueled generation unit totaling $24 million offset by a decrease in wildfire suppression costs of $9 million. Utility margin increased primarily due to lower coal-fueled generation costs, higher wholesale average market prices, higher retail revenue primarily due to favorable customer volumes lower natural gas-fueled generation, higher wholesale revenue and higher wheeling revenue,net deferrals of incurred net power costs in accordance with established adjustment mechanisms, partially offset by lower wholesale volumes, higher purchased electricity costs, higher natural gas-fueled generation costs and lower average retail rates and higher coal costs.net wheeling revenue.



106


MidAmerican Funding

Operating revenue decreased $31$199 million for 20162020 compared to 20152019, primarily due to lower natural gas operating revenue of $77 million, lower electric operating revenue of $70 million, lower electric and natural gas energy efficiency program revenue of $38 million (offset in operations and maintenance expense) and lower other revenue of $14 million, primarily from nonregulated utility construction services. Natural gas operating revenue decreased primarily due to lower volumes and a lower average per-unit cost of natural gas sold resulting in lower purchased gas adjustment recoveries of $68 million (offset in cost of sales) and a 10.2% decrease in retail customer volumes, primarily due to the unfavorable impact of weather. Electric operating revenue decreased due to lower wholesale and other revenue of $88 million, partially offset by higher retail revenue of $57$18 million. WholesaleElectric wholesale and other revenue decreased mainly due to lower average wholesale per-unit prices of $115 million, partially offset by higher wholesale volumes of $65 million and lower average wholesale prices of $25$28 million. The increase inElectric retail revenue wasincreased primarily due to higher customer usage of $38 million, partially offset by price impacts of $18 million from changes in sales mix. Electric retail rates. Retail customer volumes decreased by 0.6%increased 1.2% due to increased usage for certain industrial customers, partially offset by the impacts of COVID-19, which resulted in lower commercial customer usage in Utah and lower industrial customer usage primarily in Utah and Oregon, partially offset by an increase in the average number of residential customers in Utah and Oregon and commercial customers in Utah and the impacts of weather onhigher residential customer volumes.usage.


OperatingNet income increased $83$37 million for 20162020 compared to 20152019, primarily due to higher marginsincome tax benefit of $86$197 million from higher PTCs recognized of $132 million and lower operations and maintenance expensesthe favorable impacts of $18 million,ratemaking, partially offset by higher depreciation and amortization expense of $13$77 million due to additional assets placed in-service (offset by $23 million of lower Iowa revenue sharing accruals), lower allowances for equity and borrowed funds used during construction of $45 million, higher interest expense of $20 million and higher property taxes of $5 million. Marginslower electric and natural gas utility margins. PTCs recognized increased due to higher wind-powered generation driven primarily by repowering and new wind projects placed in-service. Electric utility margin decreased due to lower energy costs of $117 million,wholesale revenue and the price impacts from changes in sales mix, partially offset by lower operating revenue of $31 million. Energygeneration costs from higher wind generation and higher retail customer volumes. Natural gas utility margin decreased primarily due to lower purchased electricity costs,retail customer volumes primarily due to the unfavorable impact of weather.

Operating revenue decreased $126 million for 2019 compared to 2018, primarily due to lower coal-fueled generationelectric and natural gas energy efficiency program revenue of $76 million (offset in operations and maintenance expense) and lower natural gas costs,operating revenue of $66 million, partially offset by higher gas-fueled generationother operating revenue of $13 million, primarily from nonregulated utility construction services, and higher coal costs. Operations and maintenance expenses decreased primarily due to lower plant maintenance costs associated with reduced generation and lower labor and benefit costs due to lower headcount, partially offset by a Washington rate case decision disallowing returns on recent selective catalytic reduction projects.

MidAmerican Funding

Operating revenue increased $215 million for 2017 compared to 2016 due to higher electric operating revenue of $123 million, higher natural gas operating revenue of $82 million and higher other revenue of $9$3 million. Electric operating revenue increased due to higher retail revenue of $88$77 million, and higherpartially offset by lower wholesale and other revenue of $35$74 million. Electric retail revenue increased $73due to higher customer usage of $76 million fromand higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax expense), primarily the energy adjustment clause, partially offset by lower average rates of $54 million due to sales mix and $19 million from the unfavorable impact of weather. Electric retail customer volumes increased 1.4% as an increase in industrial volumes of 4.0% was largely offset by lower residential volumes from the unfavorable impact of weather and lower customer usage. Electric wholesale and other revenue decreased due to 10.6% lower sales volumes and $35 million from lower average per-unit prices. Natural gas operating revenue decreased from lower recoveries through the purchased gas adjustment clause due to a lower average per-unit cost of natural gas sold totaling $69 million (offset in cost of sales), partially offset by an increase in retail sales volumes of 2.0% from the favorable impact of weather in 2019.

Net income increased $112 million for 2019 compared to 2018, primarily due to higher income tax benefit of $115 million, largely due to higher PTCs of $70 million and the favorable impacts of ratemaking, higher electric utility margin, higher allowances for equity and borrowed funds of $32 million and higher investment earnings, partially offset by higher interest expense of $55 million and higher depreciation and amortization expense of $30 million due to additional assets placed in-service offset by $46 million of lower Iowa revenue sharing accruals. Electric utility margin increased due to lower generation costs from higher wind generation, higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax expense) and $39higher retail customer volumes.


107


NV Energy

Operating revenue decreased $183 million for 2020 compared to 2019, primarily due to lower electric operating revenue. Electric operating revenue decreased primarily due to lower fully-bundled energy rates (offset in cost of sales) of $164 million and a $120 million one-time bill credit given to customers in the fourth quarter of 2020 resulting from usagea regulatory rate review decision (offset in operations and growthmaintenance and rate factors, including higher industrial sales volumes,income tax expenses), partially offset by $24 millionhigher retail customer volumes, price impacts from the impact of milder temperatureschanges in 2017.sales mix and a favorable regulatory decision. Electric retail customer volumes, including distribution only service customers, increased 2.4%1.5%, primarily due to the favorable impact of weather, largely offset by the impacts of COVID-19, which resulted in lower industrial, distribution only service and commercial customer usage and higher residential customer usage.

Net income increased $45 million for 2020 compared to 2019, primarily due to higher electric utility margin of $100 million, lower pension and post-retirement costs of $9 million and lower income tax expense mainly from industrial growth,the favorable impacts of ratemaking, partially offset by an increase in operations and maintenance expense, mainly from higher earnings sharing accruals at the unfavorable impactNevada Utilities, and higher depreciation and amortization expense of temperatures.$20 million, mainly from higher plant placed in-service. Electric wholesale and other revenueutility margin increased primarily due to higher transmissionretail customer volumes, price impacts from changes in sales mix and a favorable regulatory decision.

Operating revenue decreased $2 million for 2019 compared to 2018, primarily due to lower electric operating revenue of $13$17 million, partially offset by higher natural gas operating revenue of $15 million. Electric operating revenue decreased due to lower retail revenue of $32 million, partially offset by higher wholesale and other revenue of $15 million. Electric retail revenue decreased primarily due to lower retail customer volumes of $12$50 million and a decrease from a tax rate reduction rider effective April 2018 of $17 million, partially offset by higher wholesale pricesfully-bundled energy rates (offset in cost of $8sales) of $31 million and an increase in the average number of customers of $9 million. Electric retail customer volumes decreased 1.4% primarily due to the impacts of weather, net of increased distribution only service customer volumes. Natural gas operating revenue increased due to a higher average per-unit cost of gas sold of $67 millionprice (offset in cost of sales), of $13 million and higher DSM program revenuevolumes from the impacts of $3 million (offset in operating expense), 2.4% higher wholesale sales volumes and 0.1% higher retail sales volumes.weather.


OperatingNet income decreased $4increased $48 million for 20172019 compared to 20162018, primarily due to higherlower operations and maintenance expense, largely due to lower political activity expenses and lower earnings sharing accruals of $52$23 million for additional wind-powered generating facilitiesat Nevada Power, partially offset by lower electric utility margin of $58 million and the timing of fossil-fueled generation maintenance, higher depreciation and amortization of $21 millionexpense. Electric utility margin decreased due to lower retail customer volumes and higher property and other taxes of $7 million,lower average retail rates from a tax rate reduction rider, partially offset by higher electric gross margins of $76 million, excluding the impact of an increase in electric DSM program revenue of $22 million (offset in operating expense), and higher natural gas gross margins of $5 million, excluding the impact of an increase in gas DSM program revenue of $3 million (offset in operating expense). Electric gross margins were higher due to higher recoveries through bill riders, higher retail sales volumes, higher wholesale revenue and higher transmission revenue, partially offset by higher coal-fueled generation and purchased power costs. The increase in depreciation and amortization reflects $38 million related to wind generation and other plant placed in-service and higher accruals for Iowa regulatory arrangements of $14 million, partially offset by a reduction of $31 million from lower depreciation rates implemented in December 2016.

Operating revenue increased $116 million for 2016 compared to 2015 due to higher electric operating revenue of $148 million, partially offset by lower natural gas operating revenue of $24 million and lower other operating revenue of $8 million. Electric operating revenue increased due to higher retail revenue of $112 million and higher wholesale and other revenue of $36 million. Retail revenue increased $47 million from higher electric rates in Iowa effective January 1, 2016, $33 million from non-weather-related usage factors, including higher industrial sales volumes and $30 million from warmer cooling season temperatures, net of warmer winter temperatures in 2016. Electric retail customer volumes increased 3.8% from the favorable impact of temperatures and industrial growth. Electric wholesale and other revenue increased primarily due to higher wholesale prices of $25 million and higher transmission revenue of $17 million related to Multi-Value Projects, which are expected to increase as projects are constructed, partially offset by lower wholesale volumes of $6 million. Natural gas operating revenue decreased due to a lower average per-unit cost of gas sold of $42 million, which is offset in cost of sales, and 0.5% lower retail sales volumes, primarily from warmer winter temperatures in 2016, partially offset by 10.1% higher wholesale volumes. Other operating revenue decreased primarily due to the completion of major projects of a nonregulated utility construction subsidiary in 2015.


Operating income increased $115 million for 2016 compared to 2015 due to the higher electric operating revenue, lower energy costs of $24 million reflecting lower coal-fueled generation in part due to greater wind-powered generation, higher purchased power volumes and higher natural gas-fueled generation, lower fossil-fueled generation maintenance of $24 million from planned outages in 2015 and lower generation operations costs of $7 million, partially offset by higher depreciation and amortization of $70 million from wind-powered generation and other plant placed in-service and an accrual related to an Iowa regulatory revenue sharing arrangement, higher other generation maintenance of $13 million primarily from the addition of wind turbines and higher operating expense recovered through bill riders of $14 million.

NV Energy

Operating revenue increased $120 million for 2017 compared to 2016 due to higher electric operating revenue of $134 million, partially offset by lower natural gas operating revenue of $11 million. Electric operating revenue increased due to higher retail revenue of $127 million and higher transmission revenue of $9 million. Electric retail revenue increased due to $198 million from higher rates primarily from energy costs (offset in cost of sales), $40 million from higher distribution only service revenue and impact fees received due to customers purchasing energy from alternative providers and becoming distribution only service customers, $18 million from an increase in the average number of customers and $10 million higher customer usage mainly from the favorable impacts of weather, partially offset by $114 million from lower commercialwholesale and industrial revenue, mainly from customers purchasing energy from alternative providers, and $23 million of lower energy efficiency program revenue (offset in operating expense). Electric retail customer volumes, including distribution only service customers, increased 1.5% compared to 2016. Natural gas operating revenue decreased due to lower energy rates, partially offset by higher customer usage.transmission revenue.


Operating income decreased $5 million for 2017 compared to 2016 due to $25 million of operating expenses related to Nevada Power's regulatory rate review, partially offset by higher electric gross margins of $20 million, excluding the impact of a decrease in energy efficiency program revenue (offset in operating expense) of $23 million. Electric gross margins were higher due to increased electric operating revenue of $157 million, excluding the impact of decreased energy efficiency program revenues, partially offset by increased energy costs of $137 million. Energy costs increased due to lower net deferred power costs of $85 million, a higher average cost of fuel for generation of $44 million and higher purchased power costs.

Operating revenue decreased $456 million for 2016 compared to 2015 due to lower electric operating revenue of $427 million, lower natural gas operating revenue of $27 million, primarily due to lower energy rates partially offset by higher customer usage, and lower other operating revenue of $2 million. Electric operating revenue decreased due to lower retail revenue of $414 million and lower wholesale, transmission and other revenue of $13 million. Retail revenue decreased primarily due to $431 million from lower retail rates primarily from lower energy costs which are passed on to customers through deferred energy adjustment mechanisms and $28 million from lower customer usage, partially offset by $38 million from higher customer growth, $11 million from higher customer usage primarily due to the impacts of weather and $4 million of higher energy efficiency rate revenue (offset in operating expense). Electric retail customer volumes were flat compared to 2015.

Operating income decreased $42 million for 2016 compared to 2015 due to higher operating expense of $27 million, primarily due to benefits from changes in contingent liabilities in 2015, regulatory disallowances in 2016 and higher energy efficiency program costs (offset in operating revenue), higher depreciation and amortization of $11 million due to higher plant in-service and lower electric margins of $2 million. Electric margins were lower due to the lower electric operating revenue offset by lower energy costs of $425 million. Energy costs decreased due to lower net deferred power costs of $413 million and a lower average cost of fuel for generation of $69 million, partially offset by higher purchased power costs of $57 million.

Northern Powergrid


Operating revenue increased $9 million for 2020 compared to 2019, primarily due to higher distribution revenue of $10 million from increased tariff rates of $40 million, partially offset by 5.4% lower units distributed of $30 million largely due to the impacts of COVID-19. Net income decreased $55 million for 2020 compared to 2019, primarily due to write-offs of gas exploration costs of $44 million, higher income tax expense of $37 million and higher distribution-related operating and depreciation expenses of $18 million, partially offset by the higher distribution revenue, lower overall pension expense of $22 million, including lower pension settlement losses recognized in 2020 compared to 2019, and lower interest expense of $9 million. The increase in income tax expense is due to a change in the United Kingdom corporate income tax rate that resulted in a deferred income tax charge of $35 million.

Operating revenue decreased $46$7 million for 20172019 compared to 20162018, primarily due to the stronger United States dollar of $48$45 million and lower distribution revenuesdistributed units of $23$21 million, partially offset by higher distribution tariff rates of $39 million and higher smart meter revenue of $25 million. Distribution revenue decreased$15 million due to a larger number of units installed. Net income increased $17 million for 2019 compared to 2018, primarily due to lower units distributedoverall pension expense of $23 million, largely resulting from lower pension settlement losses recognized in 2019 compared to 2018, and the higher distribution revenues, partially offset by higher distribution-related operating and depreciation expenses of $13 million and the recovery in 2016 of the December 2013 customer rebatestronger United States dollar of $10 million.


108


BHE Pipeline Group

Operating revenue increased $447 million for 2020 compared to 2019 due to $331 million of incremental revenue from the GT&S Transaction, a favorable rate case settlement at Northern Natural Gas of $101 million and unfavorable movements on regulatory provisionshigher transportation revenue of $7$43 million, partially offset by lower gas sales at Northern Natural Gas of $23 million related to system balancing activities (largely offset in cost of sales). Net income increased $106 million for 2020 compared to 2019, primarily due to $73 million of incremental net income from the GT&S Transaction, the higher transportation revenue, and a favorable after-tax, rate case settlement at Northern Natural Gas of $32 million, partially offset by higher tariffproperty and other tax expense of $17 million, including a non-recurring property tax refund in 2019, higher depreciation and amortization expense of $13 million due to increased spending on capital projects and lower interest income of $9 million.

Operating revenue decreased $72 million for 2019 compared to 2018 due to lower gas sales of $89 million at Northern Natural Gas related to system balancing activities (largely offset in cost of sales), partially offset by higher transportation revenue of $19 million. Transportation revenue increased from generally higher volumes and rates, partially offset by the impact of period two rates of $5 million. Operating$26 million (largely offset in depreciation and amortization expense) and $11 million from refunds related to 2017 Tax Reform at Kern River. Net income decreased $58increased $35 million for 20172019 compared to 20162018, primarily due to the higher transportation revenue, excluding the impact of period two rates, lower property and other tax expense of $9 million due to a non-recurring property tax refund in 2019 and favorable margin of $9 million on system balancing activities, partially offset by higher depreciation and amortization expense, net of the impact of lower depreciation rates at Kern River, due to increased spending on capital projects.

BHE Transmission

Operating revenue decreased $48 million for 2020 compared to 2019, primarily due to a regulatory decision received in November 2020 at AltaLink and the stronger United States dollar of $7 million. Net income increased $2 million for 2020 compared to 2019, primarily due to lower non-regulated interest expense at BHE Canada and higher net income at BHE U.S. Transmission of $6 million mainly due to improved equity earnings from ETT, partially offset by the impacts of regulatory decisions received in 2020 and 2019 at AltaLink.

Operating revenue decreased $3 million for 2019 compared to 2018, mainly due to the stronger United States dollar of $26$17 million, higher pension expense of $24largely offset by favorable regulatory decisions received in 2019 at AltaLink. Net income increased $19 million mainlyfor 2019 compared to 2018, primarily due to the 2017 settlement loss recognized due to higher lump sum payments,favorable regulatory decisions received in 2019 and the lower distribution revenue,unfavorable impacts of a regulatory rate order received in 2018 at AltaLink and higher equity earnings at ETT, partially offset by write-offs of hydrocarbon well exploration costs in 2016 totaling $19 million.


Operating revenue decreased $145 million for 2016 compared to 2015 due to the stronger United States dollar impact of $127$5 million.

BHE Renewables

Operating revenue increased $4 million for 2020 compared to 2019, primarily due to higher natural gas, solar and hydro revenues of $21 million due to favorable generation, partially offset by an unfavorable change in the valuation of a power purchase agreement of $14 million and lower distributiongeothermal revenues of $4 million from lower pricing. Net income increased $90 million for 2020 compared to 2019, primarily due to favorable wind tax equity investment earnings of $129 million, partially offset by lower geothermal earnings of $22 million, due to higher operations and maintenance expense and lower pricing, and lower natural gas earnings of $17 million, due to lower margins. Wind tax equity investment earnings improved due to $147 million of earnings from projects reaching commercial operation, partially offset by lower commitment fee income of $15 million and lower earnings from existing tax equity investments of $6 million.


109


Operating revenue increased $24 million for 2019 compared to 2018, primarily due to higher wind revenues of $32 million and higher natural gas and geothermal revenues of $32 million due to higher generation and pricing from market opportunities, partially offset by lower hydro revenues of $28 million due to lower rainfall and lower contracting revenuesolar revenues of $5$11 million partially offset by higher smart meter revenue of $18 million. Distribution revenue decreased due to the recovery in 2015 of the December 2013 customer rebate of $22 million, lower units distributed and unfavorable movements on regulatory provisions of $8 million, partially offset by higher tariff rates. Operating income decreased $99 million for 2016 compared to 2015 mainly due to the stronger United States dollar of $61 million, the lower distribution revenue, higher depreciation expense of $25 million from additional distribution and smart meter assets placed in-service and higher write-offs of hydrocarbon well exploration costs of $15 million, partially offset by the higher smart meter revenue and lower pension costs.

BHE Pipeline Group

Operating revenueinsolation. Wind revenues increased $15 million for 2017 compared to 2016 primarily due to higher transportation revenues of $33 million and higher gas sales of $19 million related to system and operational balancing activities (largely offset in cost of sales) at Northern Natural Gas, partially offset by lower transportation revenues of $40 million at Kern River. Operating income increased $20 million for 2017 compared to 2016 primarily due to the higher transportation revenues at Northern Natural Gas and a reduction in expenses and regulatory liabilities related to the impact of an alternative rate structure approved by the FERC at Kern River, partially offset by higher operating expenses at Northern Natural Gas.

Operating revenue decreased $38 million for 2016 compared to 2015 due to lower gas sales of $25 million at Northern Natural Gas related to system and operational balancing activities, which are largely offset in cost of sales, and a $20 million reduction in transportation revenues, partially offset by a $7 million increase in storage revenues at Northern Natural Gas. Operating income decreased $9 million for 2016 compared to 2015 due to the lower transportation revenues and higher depreciation expense, partially offset by the higher storage revenues and lower operating expenses.

BHE Transmission

Operating revenue increased $197 million for 2017 compared to 2016 primarily due to a one-time reduction of $200 million from the 2015-2016 GTA decision received in May 2016 at AltaLink, a weaker United States dollar of $19 millionnew projects and $15 million from additional assets placed in service, partially offset by more favorable regulatory decisions in 2016. Operating income increased $230 million for 2017 compared to 2016 primarily due to the higher operating revenue from the 2015-2016 GTA decision that required AltaLink to refund $200 million to customers in 2016 through reduced monthly billings for the change from receiving cash during construction for the return on construction work-in-progress in rate base to recording allowance for borrowed and equity funds used during construction related to construction expenditures during the 2011 to 2014 time period. This amount is offset with higher capitalized interest and allowance for equity funds. Operating income was also favorably impacted by lower operating expense primarily due to reduced impairments of nonregulated natural gas-fueled generation assets of $21 million and a weaker United States dollar of $11 million.

Operating revenue decreased $90 million for 2016 compared to 2015 due to a one-time reduction of $200 million from the 2015-2016 GTA decision received in May 2016 at AltaLink, AltaLink's change to the flow through method of recognizing income tax expense of $45 million, which is offset in income tax expense, and the stronger United States dollar of $20 million, partially offset by $175 million from additional assets placed in-service and recovery of higher costs. Operating income decreased $168 million for 2016 compared to 2015 due to the lower operating revenues at AltaLink, a $26 million impairment related to nonregulated natural gas-fueled generation assets and the stronger United States dollar of $5 million.

BHE Renewables

Operating revenue increased $95 million for 2017 compared to 2016 due to additional wind and solar capacity placed in-service of $57 million, higher generation at the Solar Star projects of $31 million due to transformer related forced outages in 2016 and higher production at the Casecnan project of $24 million due to higher rainfall, partially offset by lower generation of $11 million at the existing wind projects due to a lower wind resource and lower generation at the Topaz project of $6 million due to a scheduled maintenance outage. Operating income increased $60 million for 2017 compared to 2016 due to the increase in operating revenue, partially offset by higher depreciation and amortization of $21 million and higher operating expense of $18 million, each primarily due to additional wind and solar capacity placed in-service. Operating expense also increased from the scope and timing of maintenance at certain geothermal plants. The higher depreciation and amortization is offset by a reduction of $8 million from the extension of the useful life of certain wind-generating facilities from 25 years to 30 years effective January 2017.


Operating revenue increased $15 million for 2016 compared to 2015 due to higher wind generation at the Pinyon Pines and Jumbo Road projects of $21 million, additional wind capacity placed in-service of $14 million, a favorable change in the valuation of a power purchase agreement derivative of $6 million and higher hydro generation of $6$11 million, partially offset by lower geothermal generation of $18$12 million at existing projects. Net income increased $102 million for 2019 compared to 2018, primarily due to higher wind earnings of $74 million and higher geothermal earnings of $53 million, largely due to higher generation and margins from market opportunities and lower operations and maintenance expense, partially offset by lower hydro earnings of $20 million, primarily due to lower rainfall and a declining financial asset balance, and lower solar earnings of $5 million primarily due to lower insolation. Wind earnings were favorable primarily due to improved tax equity investment earnings of $49 million, earnings from new projects of $35 million and a favorable change in the valuation of a power purchase agreement of $11 million, partially offset by lower revenues on existing projects of $12 million, primarily from lower generation, and $8 million of $14unfavorable changes in the valuation of interest rate swap derivatives. Tax equity investment earnings were favorable due to $57 million of earnings from projects reaching commercial operation and $7 million of higher commitment fee income, partially offset by $13 million of lower earnings from existing projects mainly due to forced outages. Operating income increased $1 million for 2016 compared to 2015 due to the higher operating revenue being offsetlower generation caused by higher depreciation expense of $14 million from additional wind and solar capacity placed in-service.turbine blade repairs.


HomeServices


Operating revenue increased $642$923 million for 20172020 compared to 20162019, primarily due to higher brokerage revenue of $440 million from a 13% increase in closed transaction volume and higher mortgage revenue of $423 million from a 71% increase in funded mortgage volume due to an increase in refinance activity from the favorable interest rate environment. Net income increased $215 million for 2020 compared to 2019, primarily due to higher earnings at mortgage services of $138 million and higher earnings at brokerage services largely attributable to the favorable interest rate environment.

Operating revenue increased $259 million for 2019 compared to 2018, primarily due to an increase from acquired businesses totaling $542of $221 million and higher mortgage revenue at existing businesses of $103 million from a 4%32% increase in average home sales prices forfunded mortgage volume due to an increase in refinance activity, partially offset by lower brokerage revenue at existing brokerage businesses. Operatingbusinesses of $74 million mainly due to a 1% decrease in closed transaction volume. Net income increased $2$15 million for 20172019 compared to 20162018, primarily due to higher earnings from franchise businesses, partially offset by lower earnings from brokerage businesses mainly due to higher operating expenses at existing businesses.

Operating revenue increased $275mortgage businesses of $33 million for 2016 compared to 2015 due to an increase in refinance activity and net income from acquired businesses totaling $169of $9 million, a 2% increase in closed brokerage units and a 2% increase in average home sales prices forpartially offset by $36 million of lower earnings at existing brokerage businesses primarily from lower closed volume and $34 million of higher mortgage revenue. Operating income increased $28 million for 2016 compared to 2015 due to the higher mortgage revenue and from higher earnings from brokerage businesses mainly due to higher net revenues, partially offset by higher operating expenses.margins.


BHE and Other


Operating revenue decreased $82$118 million for 20172020 compared to 20162019, primarily due to lower electricity and natural gas volumes and lower electricity prices at MidAmerican Energy Services, LLC. Operating lossNet income increased $17$3,585 million for 20172020 compared to 20162019, primarily due to lower margins at MidAmerican Energy Services, LLC.the change in the after-tax unrealized position of the Company's investment in BYD Company Limited of $3,697 million, partially offset by higher BHE corporate interest expense and unfavorable comparative consolidated state income tax benefits.


Operating revenue decreased $104$58 million for 20162019 compared to 20152018, primarily due to lower electricity volumes and natural gas pricesvolumes at MidAmerican Energy Services, LLC. OperatingNet loss improved $14 millionremained the same for 20162019 compared to 2015 primarily due to higher margins at MidAmerican Energy Services, LLC.

Consolidated Other Income and Expense Items

Interest Expense

Interest expense for2018 as the years ended December 31 is summarized as follows (in millions):
 2017 2016 Change 2016 2015 Change
            
Subsidiary debt$1,399
 $1,378
 $21
 2 % $1,378
 $1,392
 $(14) (1)%
BHE senior debt and other423
 411
 12
 3
 411
 408
 3
 1
BHE junior subordinated debentures19
 65
 (46) (71) 65
 104
 (39) (38)
Total interest expense$1,841
 $1,854
 $(13) (1) $1,854
 $1,904
 $(50) (3)

Interest expense decreased $13change in the after-tax unrealized position of the Company's investment in BYD Company Limited of $156 million for 2017 compared to 2016 due to repayments of BHE junior subordinated debentures of $944 million in 2017 and $2.0 billion in 2016, scheduled maturities and principal payments and early redemptions of subsidiary debt, partiallywas offset by debt issuances at MidAmerican Funding, Northern Powergrid, AltaLink and BHE Renewables and higher short-term borrowings at BHE.

Interest expense decreased $50a $134 million for 2016 compared to 2015 due to repayments of BHE junior subordinated debentures of $2.0 billionincome tax benefit recognized in 2016, scheduled maturities and principal payments and by the impact of foreign currency exchange rate movements of $23 million, partially offset by debt issuances at MidAmerican Funding, NV Energy, Northern Powergrid, AltaLink and BHE Renewables.


Capitalized Interest

Capitalized interest decreased $94 million for 2017 compared to 2016 primarily due to $96 million recorded in the second quarter of 2016 from the 2015-2016 GTA decision received in May 2016 at AltaLink, which is offset in operating revenue, and lower construction work-in-progress balances at BHE Renewables, partially offset by higher construction work-in-progress balances at MidAmerican Energy.

Capitalized interest increased $65 million for 2016 compared to 2015 primarily due to $96 million recorded in the second quarter of 2016 from the 2015-2016 GTA decision received in May 2016 at AltaLink, which is offset in operating revenue, partially offset by lower construction work-in-progress balances at AltaLink and PacifiCorp.

Allowance for Equity Funds
Allowance for equity funds decreased $82 million for 2017 compared to 2016 primarily due to $104 million recorded in the second quarter of 2016 from the 2015-2016 GTA decision received in May 2016 at AltaLink, which is offset in operating revenue, partially offset by higher construction work-in-progress balances at MidAmerican Energy.

Allowance for equity funds increased $67 million for 2016 compared to 2015 primarily due to $104 million recorded in the second quarter of 2016 from the 2015-2016 GTA decision received in May 2016 at AltaLink, which is offset in operating revenue, partially offset by lower construction work-in-progress balances at AltaLink and PacifiCorp.

Interest and Dividend Income
Interest and dividend income decreased $9 million for 2017 compared to 2016 primarily due to a lower financial asset balance at the Casecnan project and lower dividends from BYD Company Limited.

Interest and dividend income increased $13 million for 2016 compared to 2015 primarily due to a dividend from BYD Company Limited.

Other, net

Other, net decreased$434 million for 2017 compared to 2016 primarily due to charges of $439 million from tender offers2018 related to certain long-term debt completed in December 2017.

Income Tax (Benefit) Expense

Income tax expense decreased $957 million for 2017 compared to 2016 and the effective tax rate was (22)% for 2017 and 14% for 2016. The effective tax rate decreased primarily due to the net impacts of 2017 Tax Reform of $731 million, higher production tax credits of $97 million and the favorable impacts of rate making of $33 million, partially offset by benefits from the resolution of income tax return claims in 2016 of $39 million and deferred income tax benefits of $16 million reflected in 2016 due to a 1% reduction in the United Kingdom corporate income tax rate.

The 2017 Tax Reform most notably lowered the U.S. federal corporate income tax rate from 35% to 21% effective January 1, 2018, and created a one-timeaccrued repatriation tax on undistributed foreign earnings and profits. The $731 million of lower income tax expense was comprised of benefits from reductions in deferred income tax liabilities of $1,150 million, partially offset by an accrual for the deemed repatriation of undistributed foreign earnings and profits totaling $419 million.

Income tax expense decreased $47 million for 2016 compared to 2015 and the effective tax rate was 14% for 2016 and 16% for 2015. The effective tax rate decreased due to higher production tax credits of $107 million, the resolution of income tax return claims from prior years of $28 million and favorable impacts of rate making of $24 million, partially offset by unfavorable United States income taxes on foreign earnings of $46 million and lower deferred income tax benefits of $23 million due toas a 1% reduction in the United Kingdom corporate income tax rate in 2016 compared to a 2% reduction in 2015.

Federal renewable electricity production tax credits are earned as energy from qualifying wind-powered generating facilities is produced and sold based on a per kilowatt rate as prescribed pursuant to the applicable federal income tax law and are eligible for the credit for 10 years from the date the qualifying generating facilities are placed in-service. A credit of $0.024 per kilowatt hour was applied to 2017 production and a credit of $0.023 per kilowatt hour was applied to 2016 and 2015 production, respectively, which resulted in production tax credits of $495 million in 2017, $398 million in 2016 and $291 million in 2015.


Equity (Loss) Income

Equity (loss) income for the years ended December 31 is summarized as follows (in millions):
 2017 2016 Change 2016 2015 Change
Equity (loss) income:               
ETT$(62) $95
 $(157) * $95
 $81
 $14
 17%
Tax equity investments(120) (10) (110) * (10) (1) (9) *
Agua Caliente24
 25
 (1) (4)% 25
 24
 1
 4
HomeServices6
 6
 
 
 6
 6
 
 
Other1
 7
 (6) (86) 7
 5
 2
 40
Total equity (loss) income$(151) $123
 $(274) * $123
 $115
 $8
 7

* Not meaningful

Equity (loss) income decreased $274 million for 2017 compared to 2016 primarily due to the impactsresult of 2017 Tax Reform, which decreased equity income by $228 million mainly due to equity earnings charges recognized totaling $154 million for amounts to be returned to the customers of equity investments in regulated entities. These investments include pass-through entities for income tax purposes and the lower equity income is entirely offset by lower income taxhigher BHE corporate interest expense as a result of benefits from reductions in deferred income tax liabilities. Equity income also decreased due to lower pre-tax equity earnings from tax equity investments mainly due to unfavorable operating results and lower equity earnings at Electric Transmission Texas, LLC primarily due to the impacts of new retail rates effective March 2017.

Equitynet income increased $8 million for 2016 compared to 2015 primarily due to higher equity earnings of $14 million at Electric Transmission Texas,MidAmerican Energy Services, LLC from continued investment and additional plant placed in-service, partially offsetdriven by a pre-tax loss of $9 million from tax equity investments at BHE Renewables.unrealized mark-to-market losses on contracts.


Net Income Attributable to Noncontrolling Interests
110


Net income attributable to noncontrolling interests increased $12 million for 2017 compared to 2016 mainly due to higher earnings at HomeServices' franchise business.


Liquidity and Capital Resources


Each of BHE's direct and indirect subsidiaries is organized as a legal entity separate and apart from BHE and its other subsidiaries. It should not be assumed that the assets of any subsidiary will be available to satisfy BHE's obligations or the obligations of its other subsidiaries. However, unrestricted cash or other assets that are available for distribution may, subject to applicable law, regulatory commitments and the terms of financing and ring-fencing arrangements for such parties, be advanced, loaned, paid as dividends or otherwise distributed or contributed to BHE or affiliates thereof. The Company's long-term debt may include provisions that allow BHE or its subsidiaries to redeem such debt in whole or in part at any time. These provisions generally include make-whole premiums. Refer to Note 1718 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding the limitation of distributions from BHE's subsidiaries.



As of December 31, 2017,2020, the Company's total net liquidity was as follows (in millions):
MidAmericanNVNorthernBHE
 BHEPacifiCorpFundingEnergyPowergridCanadaOtherTotal
 
Cash and cash equivalents$623 $13 $39 $64 $78 $87 $386 $1,290 
   
Credit facilities(1)
3,500 1,200 1,509 650 228 923 3,020 11,030 
Less: 
Short-term debt— (93)— (45)(23)(225)(1,900)(2,286)
Tax-exempt bond support and letters of credit— (218)(370)— — (2)—��(590)
Net credit facilities3,500 889 1,139 605 205 696 1,120 8,154 
Total net liquidity$4,123 $902 $1,178 $669 $283 $783 $1,506 $9,444 
Credit facilities:      
Maturity dates202220222021, 2022202220232021, 20242021, 2022 
     MidAmerican NV Northern      
 BHE PacifiCorp Funding Energy Powergrid AltaLink Other Total
                
Cash and cash equivalents$346
 $14
 $172
 $62
 $55
 $44
 $242
 $935
  
              
Credit facilities(1)
3,600
 1,000
 909
 650
 203
 1,054
 1,635
 9,051
Less:               
Short-term debt(3,331) (80) 
 
 
 (345) (732) (4,488)
Tax-exempt bond support and letters of credit(7) (130) (370) (80) 
 (7) 
 (594)
Net credit facilities262
 790
 539
 570
 203
 702
 903
 3,969
                
Total net liquidity$608
 $804
 $711
 $632
 $258
 $746
 $1,145
 $4,904
Credit facilities: 
  
  
    
    
  
Maturity dates2018, 2020
 2020
 2018, 2020
 2020
 2020
 2018, 2019, 2022
 2018, 2022
  


(1)    Includes amounts borrowed on a short-term loanthe drawn uncommitted credit facilities totaling $600$23 million at BHE that was repaid in full in January 2018.Northern Powergrid.


Refer to Note 89 of the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding the Company's credit facilities, letters of credit, equity commitments and other related items.


Operating Activities


Net cash flows from operating activities for the years ended December 31, 20172020 and 20162019 were $6.07 billion$6,224 million and $6.06 billion,$6,206 million, respectively. The increase was primarily due to an increase in income tax receipts and improved operating results, partially offset by changes in working capital and the payment for the USA Power litigation in 2016, partially offset by a reduction in income tax receipts.capital.


Net cash flows from operating activities for the years ended December 31, 20162019 and 20152018 were $6.1$6.2 billion and $7.0$6.8 billion, respectively. The changedecrease was primarily due to lowerchanges in working capital, partially offset by an increase in income tax receipts of $618 million and payment for the USA Power litigation of $123 million.receipts.


The timing of the Company's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

The 2017 Tax Reform reduces the federal corporate tax rate from 35% to 21% effective January 1, 2018, creates a one-time repatriation tax of foreign earnings and profits to be paid over the next eight years, eliminates bonus depreciation on qualifying regulated utility assets acquired after September 27, 2017 and extends and modifies the additional first-year bonus depreciation for non-regulated property. BHE's regulated subsidiaries anticipate passing the benefits of lower tax expense to customers through regulatory mechanisms. The 2017 Tax Reform and the related regulatory outcomes will result in lower revenue, income taxes and cash flow in future years. BHE does not expect the 2017 Tax Reform and related regulatory treatment to have a material adverse impact on its cash flows, subject to actual regulatory outcomes, which will be determined based on rulings by regulatory commissions expected in 2018.


In December 2015, the Protecting Americans from Tax Hikes Act of 2015 ("PATH") was signed into law, extending bonus depreciation for qualifying property acquired and placed in-service before January 1, 2020 (bonus depreciation rates were set at 50% in 2015-2017, 40% in 2018, and 30% in 2019), with an additional year for certain longer lived assets. Production tax credits were extended and phased-out for wind power and other forms of non-solar renewable energy projects that begin construction before the end of 2019. Production tax credits are maintained at full value through 2016, at 80% of the published rate in 2017, at 60% of the published rate in 2018, and 40% of the published rate in 2019. Investment tax credits were extended and phased-down for solar projects that are under construction before the end of 2021 (investment tax credit rates are 30% through 2019, 26% in 2020 and 22% in 2021; they revert to the statutory rate of 10% thereafter). The Company's cash flows from operations are expected to benefit from PATH due to bonus depreciation on qualifying assets through 2019 and from the 2017 Tax Reform for non-regulated property through 2026, production tax credits through 2029 and investment tax credits earned on qualifying wind and solar projects through 2021, respectively. As a result of 2017 Tax Reform, bonus depreciation on qualifying assets acquired after September 27, 2017 is eliminated for regulated utility property and is extended and modified for non-regulated property. The Company believes property acquired on or before September 27, 2017 will remain subject to PATH.


Investing Activities


Net cash flows from investing activities for the years ended December 31, 20172020 and 20162019 were $(6.1)$(13.2) billion and $(5.7)$(9.0) billion,, respectively. The change was primarily due to higher cash paid for acquisitions and higher funding of $1.0 billion,tax equity investments, partially offset by lower capital expenditures of $519 million$599 million. Refer to "Future Uses of Cash" for further discussion of capital expenditures.
111


Net cash flows from investing activities for the years ended December 31, 2019 and lower2018 were $(9.0) billion and $(7.0) billion, respectively. The change was primarily due to higher capital expenditures of $1.1 billion and higher funding of tax equity investments. Refer to "Future Uses of Cash" for further discussion of capital expenditures.


NetNatural Gas Transmission and Storage Business Acquisition

On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of DEI and Dominion Questar, exclusive of the Questar Pipeline Group (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, flowsafter post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments.

On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from investing activitiesDominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in the first half of 2021, for the years ended December 31, 2016 and 2015 were $(5.7) billion and $(6.2) billion, respectively. The change was primarily due to lower capital expenditures of $785 million, partially offset by higher funding of tax equity investments.

Acquisitions

In 2017, the Company completed various acquisitions totaling $1.1 billion, net ofa cash acquired. The purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for each acquisition was allocated tocash and indebtedness as of the assets acquired and liabilities assumed, which primarily related to residential real estate brokerage businesses, development and construction costs for the 110-megawatt Alamo 6closing, and the 50-megawatt Pearl solar projects, andassumption of approximately $430 million of existing indebtedness for borrowed money. Under the remaining 25% interest inQ-Pipe Purchase Agreement, BHE delivered the Silverhawk natural gas-fueled generation facility at Nevada Power. As a resultQ-Pipe Cash Consideration of the various acquisitions, the Company acquired assets of $1.1approximately $1.3 billion assumed liabilities of $487 million and recognized goodwill of $508 million.to Dominion Questar on November 2, 2020.

In 2016 and 2015, the Company completed various acquisitions totaling $66 million and $164 million, net of cash acquired, respectively. The purchase price for each acquisition was allocated to the assets acquired and liabilities assumed. The assets acquired consisted of property, plant and equipment, development and construction costs for renewable projects, other working capital items, goodwill of $50 million and $33 million, respectively, and other identifiable intangible assets. The liabilities assumed totaled $54 million and $84 million, respectively.



Financing Activities


Net cash flows from financing activities for the year ended December 31, 20172020 were $274 million.$7.1 billion. Sources of cash totaled $4.1$11.7 billion and consisted of net proceeds from short-termBHE senior debt issuances of $2.4$5.2 billion, proceeds from preferred stock issuances of $3.8 billion and proceeds from subsidiary debt issuances totaling $1.7$2.7 billion. Uses of cash totaled $3.9$4.5 billion and consisted mainly of $2.3 billion for repayments of BHE senior debt and junior subordinated debentures, $1.0$2.8 billion for repayments of subsidiary debt, net repayments of short term debt of $939 million and tender offer premiums paid$350 million for repayments of $435 million.BHE senior debt.


Net cash flows from financing activities for the year ended December 31, 20162019 were $(690) million.$3.1 billion. Sources of cash totaled $3.2$5.4 billion and consisted mainly of proceeds from subsidiary debt issuances totaling $2.3$4.7 billion and net proceeds from short-term debt of $880$684 million. Uses of cash totaled $3.9$2.3 billion and consisted mainly of $1.8$1.9 billion for repayments of subsidiary debt and repaymentsrepurchases of BHE subordinated debt totaling $2 billion.common stock of $293 million.


Net cash flows from financing activities for the year ended December 31, 20152018 were $(255) million.$(174) million. Sources of cash totaled $2.5$5.6 billion and consisted of proceeds from BHE senior debt issuances of $3.2 billion and proceeds from subsidiary debt.debt issuances totaling $2.4 billion. Uses of cash totaled $2.7$5.8 billion and consisted mainly of $1.4$2.4 billion for repayments of subsidiary debt, net repayments of short term debt of $1.9 billion, $1.0 billion for repayments of BHE subordinatedsenior debt totaling $850 million and net repaymentsthe purchase of short-term debtredeemable noncontrolling interest of $421$131 million.



Debt Repurchases

The Company may from time to time seek to acquire its outstanding debt securities through cash purchases in the open market, privately negotiated transactions or otherwise. Any debt securities repurchased by the Company may be reissued or resold by the Company from time to time and will depend on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors. The amounts involved may be material.


Preferred Stock Issuance

On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration.

Common Stock Transactions

For the years ended December 31, 2020, 2019 and 2018, BHE repurchased 180,358 shares of its common stock for $126 million, 447,712 shares of its common stock for $293 million and 177,381 shares of its common stock for $107 million, respectively.
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Future Uses of Cash


The Company has available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, the issuance of equity and other sources. These sources are expected to provide funds required for current operations, capital expenditures, acquisitions, investments, debt retirements and other capital requirements. The availability and terms under which BHE and each subsidiary has access to external financing depends on a variety of factors, including regulatory approvals, its credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry and project finance markets, among other items.


Capital Expenditures


The Company has significant future capital requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Expenditures for certain assets may ultimately include acquisitions of existing assets.


The Company's historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, by reportable segment for the years ended December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
PacifiCorp$1,257 $2,175 $2,540 $1,717 $1,911 $2,550 
MidAmerican Funding2,332 2,810 1,836 2,101 1,924 2,036 
NV Energy503 657 675 742 1,001 980 
Northern Powergrid566 602 682 715 584 567 
BHE Pipeline Group427 687 659 1,011 949 939 
BHE Transmission270 247 372 279 294 237 
BHE Renewables817 122 95 96 91 84 
HomeServices47 54 36 46 40 38 
BHE and Other(1)
22 10 (130)79 59 53 
Total$6,241 $7,364 $6,765 $6,786 $6,853 $7,484 
 Historical Forecast
 2015 2016 2017 2018 2019 2020
            
PacifiCorp$916
 $903
 $769
 $1,212
 $2,100
 $1,802
MidAmerican Funding1,448
 1,637
 1,776
 2,396
 1,711
 897
NV Energy571
 529
 456
 524
 557
 448
Northern Powergrid674
 579
 579
 700
 621
 478
BHE Pipeline Group240
 226
 286
 435
 344
 234
BHE Transmission966
 466
 334
 243
 221
 292
BHE Renewables1,034
 719
 323
 869
 86
 87
HomeServices16
 20
 37
 48
 29
 29
BHE and Other10
 11
 11
 16
 13
 12
Total$5,875
 $5,090
 $4,571
 $6,443
 $5,682
 $4,279
(1)BHE and Other includes intersegment eliminations.


HistoricalForecast
201820192020202120222023
Wind generation$2,775 $2,828 $2,125 $1,115 $780 $1,101 
Electric distribution1,385 1,537 1,719 1,726 1,540 1,510 
Electric transmission608 1,070 958 993 1,665 1,734 
Natural gas transmission and storage451717640872832865
Solar generation305161504401,037 
Other992 1,207 1,307 1,930 1,596 1,237 
Total$6,241 $7,364 $6,765 $6,786 $6,853 $7,484 

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 Historical Forecast
 2015 2016 2017 2018 2019 2020
            
Wind generation$1,177
 $1,712
 $1,291
 $2,662
 $2,219
 $1,192
Solar generation786
 69
 129
 36
 42
 18
Electric transmission936
 448
 343
 248
 365
 551
Environmental134
 70
 91
 104
 29
 53
Other growth394
 414
 560
 741
 609
 258
Operating2,448
 2,377
 2,157
 2,652
 2,418
 2,207
Total$5,875
 $5,090
 $4,571
 $6,443
 $5,682
 $4,279



The Company's historical and forecast capital expenditures consisted mainly of the following:
Wind generation includesexpenditures include the following:
Construction of wind-powered generating facilities at MidAmerican Energy totaling $657 million for 2017, $943 million for 2016 and $931 million for 2015. MidAmerican Energy placed in-service 334 MW (nominal ratings) during 2017, 600 MW (nominal ratings) during 2016 and 608 MW (nominal ratings) during 2015. In August 2016, the IUB issued an order approving ratemaking principles related to MidAmerican Energy's construction of up to 2,000 MW (nominal ratings) of additional wind-powered generating facilities, including the additions in 2017 and facilities expected to be placed in-service in 2018 and 2019. MidAmerican Energy expects to spend $1,132 million in 2018, $1,038 million in 2019 and $329 million in 2020 for these additional wind-powered generating facilities. The ratemaking principles establish a cost cap of $3.6 billion, including AFUDC, and a fixed rate of return on equity of 11.0% over the proposed 40-year useful lives of those facilities in any future Iowa rate proceeding. The cost cap ensures that as long as total costs are below the cap, the investment will be deemed prudent in any future Iowa rate proceeding. Additionally, the ratemaking principles modify the revenue sharing mechanism currently in effect. The revised sharing mechanism will be effective in 2018 and will be triggered each year by actual equity returns exceeding a weighted average return on equity for MidAmerican Energy calculated annually. Pursuant to the change in revenue sharing, MidAmerican Energy will share 100% of the revenue in excess of this trigger with customers. Such revenue sharing will reduce coal and nuclear generation rate base, which is intended to mitigate future base rate increases. MidAmerican Energy expects all of these wind-powered generating facilities to qualify for 100% of the federal production tax credits available.
Construction of wind-powered generating facilities at PacifiCorp totaling $5 million for 2017 and $31 million for 2016. The new wind-powered generating facilities are expected to be placed in-service in 2020. Planned spending for the new wind-powered generating facilities totals $200 million in 2018, $421 million in 2019 and $588 million in 2020, plus approximately $300 million for an assumed vendor supplied financing transaction to be paid in 2020 that is not included in the table above. The energy production from the new wind-powered generating facilities is expected to qualify for 100% of the federal production tax credits available.
Construction of wind-powered generating facilities at BHE Renewables totaling $109 million for 2017, $602 million for 2016 and $246 million for 2015. BHE Renewables placed in-service 472 MW during 2016 and 300 MW during 2015. BHE Renewables anticipates costs will total an additional $734 million in 2018 for development and construction of up to 512 MW of wind-powered generating facilities.
Repowering certain existing wind-powered generating facilities at PacifiCorp and MidAmerican Energy totaling $520 million for 2017 and $147 million for 2016.
Construction of wind-powered generating facilities at MidAmerican Energy totaling $848 million for 2020, $1,486 million for 2019 and $1,261 million for 2018. MidAmerican Energy placed in-service 729 MWs (nominal ratings) during 2020, including the acquisition of an existing 80-MW wind farm, 1,019 MWs (nominal ratings) during 2019 and 817 MWs (nominal ratings) during 2018. Wind XI, a 2,000-MW project, was completed in January 2020. Wind XII, a 592-MW project, was placed in-service in 2019 and 2020. MidAmerican Energy had three other wind-powered generation projects under construction in 2020 that totaled 319 MWs, including facilities placed in-service in 2020 and the remainder expected to be placed in-service in early 2021. MidAmerican Energy expects all of these wind-powered generating facilities to qualify for 100% of PTCs available. PTCs from these projects are excluded from MidAmerican Energy's Iowa energy adjustment clause until these generation assets are reflected in base rates.
MidAmerican Energy is currently planning to construct 483 MWs of additional wind-powered generating facilities, for which the related projects are at varying stages of development. Planned spending for those projects totals $461 million for 2021, $16 million for 2022 and $421 million for 2023.
Repowering certain existing wind-powered generating facilities at MidAmerican Energy totaling $37 million for 2020, $369 million for 2019 and $422 million for 2018. The repowering projects entail the replacement of significant components of older turbines. Planned spending for the repowered generating facilities totals $596 million in 2018, $758 million in 2019 and $276 million in 2020. The energy production from such repowered facilities is expected to qualify for 100% of the federal production tax credits available for ten years following each facility's return to service.
Solar generation includes the following:
Construction of the community solar gardens project in Minnesota totaling $121 million for 2017, $56 million for 2016 and $3 million for 2015. BHE Renewables expects to spend an additional $26 million in 2018 to complete the project, which will be comprised of 28 locations with a nominal facilities capacity of 98 MW.
Final construction costs for the Solar Star and Topaz Projects totaling $738 million for 2015. Both projects declared the commercial operation date in accordance with the respective power purchase agreements and achieved completion under the respective engineering, procurement and construction agreements and financing documents in 2015.
Electric transmission includes PacifiCorp's costs associated with main grid reinforcement and the Energy Gateway Transmission Expansion Program, MidAmerican Energy's MVPs approved by the MISO for the construction of approximately 250 miles of 345 kV transmission line located in Iowa and Illinois and ALP's directly assigned projects from the AESO, .
Environmental includes the installation of new or the replacement of existing emissions control equipment at certainsignificant components of older turbines. Planned spending for the repowered generating facilities totals $409 million in 2021 and $673 million in 2022. Of the 1,079 MWs of current repowering projects not in-service as of December 31, 2020, 80 MWs are currently expected to qualify for 100% of the federal PTCs available for ten years following each facility's return to service, 592 MWs are expected to qualify for 80% of such credits and 407 MWs are expected to qualify for 60% of such credits.
Construction of wind-powered generating facilities at the Utilities, including installation or upgradePacifiCorp totaling $1,148 million for 2020, $338 million for 2019 and $9 million for 2018 and includes 674 MWs of selective catalytic reduction control systemsnew wind-powered generating facilities that were placed in-service in 2020 and low nitrogen oxide burners516 MWs expected to reduce nitrogen oxides, particulate matter control systems, sulfur dioxide emissions control systems and mercury emissions control systems, as well as expendituresbe placed in-service in 2021. Planned spending for the managementnew wind-powered generating facilities totals $43 million in 2021 and $533 million in 2023. The energy production from the new wind-powered generating facilities is expected to qualify for 100% of coal combustion residuals.the federal PTCs available for ten years once the equipment is placed in-service.

Repowering certain existing wind-powered generating facilities at PacifiCorp totaling $125 million for 2020, $585 million for 2019 and $332 million for 2018. The repowering projects entail the replacement of significant components of older turbines. Certain repowering projects were placed in service in 2019 and 2020 and the remaining repowering projects are expected to be placed in-service in 2021. Planned spending for the repowered generating facilities totals $42 million in 2021, $19 million in 2022 and $64 million in 2023. The energy production from such repowered facilities is expected to qualify for 100% of the federal PTCs available for ten years following each facility's return to service.

Construction of wind-powered generating facilities at BHE Renewables totaling $15 million for 2019 and $717 million for 2018. BHE Renewables placed in-service 512 MWs during 2018.
OtherElectric distribution includes both growth includes projects to deliver power and services to new markets,operating expenditures. Growth expenditures include new customer connections and enhancements to existing customer connections.
Operating includesexpenditures include ongoing distribution systems infrastructure needed at the Utilities and Northern Powergrid, wildfire mitigation, damage restoration and storm damage repairs and investments in routine expenditures for distribution needed to serve existing and expected demand.
Electric transmission includes both growth and operating expenditures. Growth expenditures include PacifiCorp's costs for the 140-mile 500-kV Aeolus-Bridger/Anticline transmission line, which is a major segment of PacifiCorp's Energy Gateway Transmission expansion program placed in-service in November 2020, the Nevada Utilities' Greenlink Nevada transmission expansion program and AltaLink's directly assigned projects from the AESO. Operating expenditures include system reinforcement and investments in routine expenditures for transmission needed to serve existing and expected demand.
Natural gas transmission and storage includes both growth and operating expenditures. Growth expenditures includes, among other items, the Northern Natural Gas New Lisbon Expansion and Twin Cities Area Expansion projects. Operating expenditures include, among other items, asset modernization and pipeline integrity projects.
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Solar generation transmission, distributionincludes growth expenditures, including MidAmerican Energy's current plan to construct 767 MWs of small- and utility-scale solar generation, for which the related projects are in varying stages of development. Nevada Power's solar generation investment includes expenditures for a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage, known as the Dry Lake generating facility. Commercial operation at Dry Lake is expected by the end of 2023.
Other capital expenditures includes both growth and operating expenditures, including routine expenditures for generation and other infrastructure needed to serve existing and expected demand.demand, natural gas distribution, technology, and environmental spending relating to emissions control equipment and the management of CCR.


Contractual Obligations
The Company has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes the Company's material contractual cash obligations as of December 31, 20172020 (in millions):
Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
BHE senior debt$450 $900 $1,650 $10,551 $13,551 
BHE junior subordinated debentures— — — 100 100 
Subsidiary debt1,389 4,148 3,585 26,986 36,108 
Interest payments on long-term debt(1)
2,063 3,919 3,511 23,094 32,587 
Short-term debt2,286 — — — 2,286 
Operating and finance lease liabilities167 249 156 509 1,081 
Interest payments on operating and finance lease liabilities(1)
67 106 80 365 618 
Fuel, capacity and transmission contract commitments(1)
2,122 2,866 2,332 12,985 20,305 
Construction commitments(1)
783 520 — 1,307 
Easements(1)
72 148 146 2,229 2,595 
Other(1)
472 749 492 1,464 3,177 
Total contractual cash obligations$9,871 $13,605 $11,952 $78,287 $113,715 
  Payments Due By Periods
    2019- 2021- 2023 and  
  2018 2020 2022 After Total
           
BHE senior debt $1,000
 $350
 $
 $5,146
 $6,496
BHE junior subordinated debentures 
 
 
 100
 100
Subsidiary debt 2,431
 3,427
 2,724
 20,198
 28,780
Interest payments on long-term debt(1)
 1,769
 3,040
 2,760
 16,457
 24,026
Short-term debt 4,488
 
 
 
 4,488
Fuel, capacity and transmission contract commitments(1)
 2,098
 3,072
 2,265
 10,044
 17,479
Construction commitments(1)
 1,120
 62
 
 
 1,182
Operating leases and easements(1)
 180
 298
 232
 1,297
 2,007
Other(1)
 290
 572
 571
 1,189
 2,622
Total contractual cash obligations $13,376
 $10,821
 $8,552
 $54,431
 $87,180


(1)Not reflected on the Consolidated Balance Sheets.
(1)Not reflected on the Consolidated Balance Sheets.


The Company has other types of commitments that arise primarily from unused lines of credit, letters of credit or relate to construction and other development costs (Liquidity(refer to Liquidity and Capital Resources included within this Item 7 and Note 8)9), uncertain tax positions (Note 11)(refer to Note 12) and asset retirement obligations (Note 13)AROs (refer to Note 14), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information.


Additionally, the Company has invested in projects sponsored by third parties, commonly referred to as tax equity investments. Under the terms of these tax equity investments, the Company has entered into equity capital contribution agreements with the project sponsors that require contributions. The Company has made contributions of $403$2,736 million, $584$1,619 million and $170$698 million in 2017, 20162020, 2019 and 2015,2018, respectively, and has commitments as of December 31, 2017,2020, subject to satisfaction of certain specified conditions, to provide equity contributions of $265$563 million in 20182021 pursuant to these equity capital contribution agreements as the various projects achieve commercial operation. Once a project achieves commercial operation, the Company enters into a partnership agreement with the project sponsor that directs and allocates the operating profits and tax benefits from the project.


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Regulatory Matters


The Company is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further discussioninformation regarding the Company's general regulatory framework and current regulatory matters.



COVID-19

In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by the Company. While COVID-19 has impacted the Company's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. Most jurisdictions in which the Company operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity or natural gas may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by the Utilities and Northern Powergrid related to customer collection activity and suspension of disconnections for non-payment, the Utilities and Northern Powergrid have seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for the deferral or recovery of certain costs incurred in responding to COVID-19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion. Residential property transactions may also decline in the future at HomeServices due to the varying phases of state recovery plans and associated duration of restrictions on business openings, other measures and general economic uncertainty.

Several of the Company's businesses have been deemed essential and their employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain the electric generation, transmission and distribution systems and the natural gas transportation and distribution systems. In response to the effects of COVID-19, the Company has implemented various business continuity plans to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID-19.

Quad Cities Generating Station Operating Status


Exelon Generation Company, LLC ("Exelon Generation"), the operator of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station") of which MidAmerican Energy has a 25% ownership interest, announced on June 2, 2016, its intention to shut down Quad Cities Station on June 1, 2018, as a result of Illinois not passing adequate legislation and Quad Cities Station not clearing the 2019-2020 PJM Interconnection, L.L.C. capacity auction. MidAmerican Energy expressed to Exelon Generation its desire for the continued operation of the facility through the end of its operating license in 2032 and worked with Exelon Generation on solutions to that end.2018. In December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Agency to purchase zero emission creditsZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the zero emission creditsZECs will provide Exelon Generation additional revenue through 2027 as an incentive for continued operation of Quad Cities Station. For the nuclear assets already in rate base, MidAmerican Energy's customers will not be charged for the subsidy, and MidAmerican Energy will not receive additional revenue from the subsidy.


On February 14, 2017, two lawsuits were filed with the United States District Court for the Northern District of IllinoisThe PJM Interconnection, L.L.C. ("Northern District of Illinois"PJM") against the Illinois Power Agency alleging that the state’s zero emission credit program violates certain provisions of the U.S. Constitution. Both complaints argue that the Illinois zero emission credit program will distort the FERC’s energy and capacity market auction system of setting wholesale prices. As majority owner and operator of Quad Cities Station, Exelon Generation intervened and filed motions to dismiss in both lawsuits. On July 14, 2017, the Northern District of Illinois granted the motions to dismiss. On July 17, 2017, the plaintiffs filed appeals with the United States Court of Appeals for the Seventh Circuit. Parties have filed briefs and presented oral argument. MidAmerican Energy cannot predict the outcome of these lawsuits.

On January 9, 2017, the Electric Power Supply Association filed two requests with the FERC seeking to expandincludes a Minimum Offer Price Rule ("MOPR") provisions. If a generation resource is subjected to applya MOPR, its offer price in the market is adjusted to effectively remove the revenues it receives through a government-provided financial support program, resulting in a higher offer that may not clear the capacity market. Prior to December 19, 2019, the PJM MOPR applied only to certain new gas-fired resources. An expanded PJM MOPR to include existing resources receiving zero emission credit compensation. If successful, an expanded MOPR could resultwould require exclusion of ZEC compensation when bidding into future capacity auctions, resulting in an increased risk of Quad Cities Station not clearing in future capacity auctions and Exelon Generation no longer receiving capacity revenues in future auctions.

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On December 19, 2019, the FERC issued an order requiring the PJM to broadly apply the MOPR to all new and existing resources, including nuclear. This greatly expands the breadth and scope of the PJM's MOPR, which is effective as of the PJM's next capacity auction. While the FERC included some limited exemptions in its order, no exemptions were available to state-supported nuclear resources, such as Quad Cities Station. The FERC provided no new mechanism for accommodating state-supported resources other than the facility.existing Fixed Resource Requirement ("FRR") mechanism under which an entire utility zone would be removed from PJM's capacity auction along with sufficient resources to support the load in such zone. In response to the FERC's order, the PJM submitted a compliance filing on March 18, 2020, wherein the PJM proposes tariff language reflecting the FERC's directives and a schedule for resuming capacity auctions. On April 16, 2020, the FERC issued an order largely denying requests for rehearing of the FERC's December 2019 order but granting a few clarifications that required an additional PJM compliance filing, which it submitted on June 1, 2020. On October 15, 2020, the FERC issued an order denying requests for rehearing of its April 16, 2020 order and accepting the PJM's two compliance filings, subject to a further compliance filing to revise minor aspects of the proposed MOPR methodology. As majority ownerpart of that order, the FERC also accepted the PJM's proposal to condense the schedule of activities leading up to the next capacity auction but did not specify when that schedule would commence given that a key element of the MOPR level computation remains pending before the FERC in another proceeding. In November 2020, the PJM announced that the next capacity auction will be conducted in May 2021.

On May 21, 2020, the FERC issued an order involving reforms to the PJM's day-ahead and operatorreal-time reserves markets that need to be reflected in the calculation of MOPR levels. In approving reforms to the PJM's reserves markets, the FERC also directed the PJM to develop a new methodology for estimating revenues that resources will receive for sales of energy and related services, which will then be used in calculating a number of parameters and assumptions used in the capacity market, including MOPR levels. The PJM submitted its new revenue projection methodology on August 5, 2020. On review of this compliance filing, the FERC is expected to address how these additional reforms will impact MOPR levels, the timeline for implementing the new revenue projection methodology, and the timing for commencing the capacity auction schedule.

Exelon Generation is currently working with PJM and other stakeholders to pursue the FRR option as an alternative to the next PJM capacity auction. If Illinois implements the FRR option, Quad Cities Station could be removed from PJM's capacity auction and instead supply capacity and be compensated under the FRR program. If Illinois cannot implement an FRR program in its PJM zones, then the MOPR will apply to Quad Cities Station, resulting in higher offers for its units that may not clear the capacity market. Implementing the FRR program in Illinois will require both legislative and regulatory changes. MidAmerican Energy cannot predict whether or when such legislative and regulatory changes can be implemented or their potential impact on the continued operation of Quad Cities Station, Exelon Generation has filed protests at the FERC in response to each filing. The timing of the FERC’s decision with respect to both proceedings is currently unknown and the outcome of these matters is currently uncertain.Station.


Environmental Laws and Regulations


The Company is subject to federal, state, local and foreign laws and regulations regarding climate change, RPS, air and water quality, RPS, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. In addition to imposing continuing compliance obligations and capital expenditure requirements, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. The Company believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion regarding environmental laws and regulations and "Liquidity and Capital Resources" for discussion of the Company's forecast environmental-related capital expenditures.regulations.


Collateral and Contingent Features


Debt of BHE and debt and preferred securities of certain of its subsidiaries are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of the rated company's ability to, in general, meet the obligations of its issued debt or preferred securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.


BHE and its subsidiaries have no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. The Company's unsecured revolving credit facilities do not require the maintenance of a minimum credit rating level in order to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.



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In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017,2020, the applicable entities' credit ratings from the three recognized credit rating agencies were investment grade. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2017,2020, the Company would have been required to post $440$307 million of additional collateral. The Company's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. Refer to Note 14 of Notes to Consolidated Financial Statements for a discussion of the Company's collateral requirements specific to its derivative contracts.


Inflation


Historically, overall inflation and changing prices in the economies where BHE's subsidiaries operate have not had a significant impact on the Company's consolidated financial results. In the United States and Canada, the Regulated Businesses operate under cost-of-service based rate structures administered by various state and provincial commissions and the FERC. Under these rate structures, the Regulated Businesses are allowed to include prudent costs in their rates, including the impact of inflation. The price control formula used by the Northern Powergrid Distribution Companies incorporates the rate of inflation in determining rates charged to customers. BHE's subsidiaries attempt to minimize the potential impact of inflation on their operations through the use of fuel, energy and other cost adjustment clauses and bill riders, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.


Off-Balance Sheet Arrangements


The Company has certain investments that are accounted for under the equity method in accordance with GAAP. Accordingly, an amount is recorded on the Company's Consolidated Balance Sheets as an equity investment and is increased or decreased for the Company's pro-rata share of earnings or losses, respectively, less any dividends from such investments. Certain equity investments are presented on the Consolidated Balance Sheets net of investment tax credits.


As of December 31, 2017,2020, the Company's investments that are accounted for under the equity method had short- and long-term debt of $2.5$2.7 billion, unused revolving credit facilities of $365$173 million and letters of credit outstanding of $88 million. As of December 31, 2017,2020, the Company's pro-rata share of such short- and long-term debt was $1.2$1.3 billion, unused revolving credit facilities was $151$87 million and outstanding letters of credit was $43 million. The entire amount of the Company's pro-rata share of the outstanding short- and long-term debt and unused revolving credit facilities is non-recourse to the Company. The entire amount of the Company's pro-rata share of the outstanding letters of credit is recourse to the Company. Although the Company is generally not required to support debt service obligations of its equity investees, default with respect to this non-recourse short- and long-term debt could result in a loss of invested equity.


New Accounting Pronouncements

For a discussion of new accounting pronouncements affecting the Company, refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Critical Accounting Estimates


Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by the Company's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with the Company's Summary of Significant Accounting Policies included in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.



Accounting for the Effects of Certain Types of Regulation


The Regulated Businesses prepare their financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, the Regulated Businesses defer the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.


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The Company continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit the Regulated Businesses' ability to recover their costs. The Company believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal, state and provincial levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").AOCI. Total regulatory assets were $3.0$3.4 billion and total regulatory liabilities were $7.5$7.5 billion as of December 31, 2017.2020. Refer to Note 67 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Regulated Businesses' regulatory assets and liabilities.


Derivatives

The Company is exposed to the impact of market fluctuations in commodity prices, interest rates and foreign currency exchange rates. The Company is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk primarily through BHE's ownership of the Utilities as they have an obligation to serve retail customer load in their regulated service territories. The Company also provides nonregulated retail electricity and natural gas services in competitive markets. The Utilities' load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold, and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate short- and long-term debt, future debt issuances and mortgage commitments. Additionally, BHE is exposed to foreign currency exchange rate risk from its business operations and investments in Great Britain and Canada. Each of BHE's business platforms has established a risk management process that is designed to identify, assess, manage, mitigate, monitor and report each of the various types of risk involved in its business. The Company employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price, interest rate, and foreign currency exchange rate risk. The Company manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, the Company may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, forward sale commitments, or mortgage interest rate lock commitments, to mitigate the Company's exposure to interest rate risk. The Company does not hedge all of its commodity price, interest rate and foreign currency exchange rate risks, thereby exposing the unhedged portion to changes in market prices. Refer to Notes 14 and 15 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's derivative contracts.


Measurement Principles

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which the Company transacts. When quoted prices for identical contracts are not available, the Company uses forward price curves. Forward price curves represent the Company's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. The Company bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by the Company. Market price quotations are generally readily obtainable for the applicable term of the Company's outstanding derivative contracts; therefore, the Company's forward price curves reflect observable market quotes. As of December 31, 2017, the Company had a net derivative liability of $120 million related to contracts valued using either quoted prices or forward price curves based upon observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, the Company uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The assumptions used in these models are important because any changes in assumptions could have a significant impact on the estimated fair value of the contracts. As of December 31, 2017, the Company had a net derivative asset of $103 million related to contracts where the Company uses internal models with significant unobservable inputs.

Classification and Recognition Methodology

The majority of the Company's commodity derivative contracts are probable of inclusion in the rates of its rate-regulated subsidiaries, and changes in the estimated fair value of derivative contracts are generally recorded as net regulatory assets or liabilities. Accordingly, amounts are generally not recognized in earnings until the contracts are settled and the forecasted transaction has occurred. As of December 31, 2017, the Company had $119 million recorded as net regulatory assets related to derivative contracts on the Consolidated Balance Sheets.

Impairment of Goodwill and Long-Lived Assets


The Company's Consolidated Balance Sheet as of December 31, 20172020 includes goodwill of acquired businesses of $9.7$11.5 billion. The Company evaluates goodwill for impairment at least annually and completed its annual review as of October 31. Additionally, no indicators of impairment were identified as of December 31, 2017. 2020. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. The Company uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings;earnings or rate base; and an appropriate discount rate. Estimated future cash flows are impacted by, among other factors, growth rates, changes in regulations and rates, ability to renew contracts and estimates of future commodity prices. In estimating future cash flows, the Company incorporates current market information, as well as historical factors. Refer to Note 2122 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's goodwill.


The Company evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2017,2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.


The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what the Company would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, load growth, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect the Company's results of operations.


Pension and Other Postretirement Benefits


Certain of the Company's subsidiaries sponsor defined benefit pension and other postretirement benefit plans that cover the majority of employees. The Company recognizes the funded status of the defined benefit pension and other postretirement benefit plans on the Consolidated Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2017,2020, the Company recognized a net liability totaling $63$138 million for the funded status of the defined benefit pension and other postretirement benefit plans. As of December 31, 2017,2020, amounts not yet recognized as a component of net periodic benefit cost that were included in net regulatory assets totaled $606$604 million and in AOCI totaled $530 million.$655 million.



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The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rates, expected long-term rate of return on plan assets and healthcare cost trend rates. These key assumptions are reviewed annually and modified as appropriate. The Company believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 1213 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for disclosures about the defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2017.2020.


The Company chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.


In establishing its assumption as to the expected long-term rate of return on plan assets, the Company utilizes the expected asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. The Company regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.


The Company chooses a healthcare cost trend rate that reflects the near and long-term expectations of increases in medical costs and corresponds to the expected benefit payment periods. The healthcare cost trend rate is assumed to gradually decline to 5.00% by 2025, at which point the rate of increase is assumed to remain constant. Refer to Note 1213 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for healthcare cost trend rate sensitivity disclosures.


The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Consolidated Financial Statements would be as follows (dollars in millions):
Domestic Plans
Other PostretirementUnited Kingdom
Pension PlansBenefit PlansPension Plan
+0.5%-0.5%+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020
Benefit Obligations:
Discount rate$(164)$184 $(38)$41 $(187)$219 
Effect on 2020 Periodic Cost:
Discount rate$(2)$$$(1)$(20)$22 
Expected rate of return on plan assets(12)12 (4)(11)11 
 Domestic Plans  
     Other Postretirement United Kingdom
 Pension Plans Benefit Plans Pension Plan
 +0.5% -0.5% +0.5% -0.5% +0.5% -0.5%
            
Effect on December 31, 2017           
Benefit Obligations:           
Discount rate$(155) $170
 $(31) $34
 $(197) $222
            
Effect on 2017 Periodic Cost:           
Discount rate$(2) $
 $1
 $
 $(18) $19
Expected rate of return on plan assets(12) 12
 (3) 3
 (10) 10


A variety of factors affect the funded status of the plans, including asset returns, discount rates, mortality assumptions, plan changes and the Company's funding policy for each plan.



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Income Taxes


In determining the Company's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the Company's various regulatory jurisdictions.commissions. The Company's income tax returns are subject to continuous examinations by federal, state, local and foreign income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of the Company's federal, state, local and foreign income tax examinations is uncertain, the Company believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on the Company's consolidated financial results. Refer to Note 1112 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's income taxes.


It is probable the Company's regulated businesses will pass income tax benefits and expense related to the federal tax rate change from 35% to 21%, as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to their customers in certain state and provincial jurisdictions.customers. As of December 31, 2017,2020, these amounts were recognized as a net regulatory liability of $4.0$3.3 billion and will be included in regulated rates when the temporary differences reverse.


The 2017 Tax Reform creates a one-time repatriation taxCompany has not established deferred income taxes on the Company's undistributed foreign corporations' post-1986 accumulated earnings and profits. Therefore, the cumulativeits undistributed foreign earnings were deemed repatriatedthat have been determined by management to the United States as of December 31, 2017. The Company currently does not believe the deemed repatriation has altered the Company's existing assertion that undistributed earnings will be reinvested indefinitely; however, the Company periodically evaluates its capital requirementsrequirements. If circumstances change in the future and that conclusion could change. As a resultportion of the 2017 Tax Reform, futureCompany's undistributed foreign earnings arewere repatriated, the dividends may be subject to taxation in the United States but the tax is not expected to be subject to tax in the United States.material.


Revenue Recognition - Unbilled Revenue


Revenue from energy business customersrecognized is recognizedequal to what the Company has the right to invoice as electricity or natural gas is delivered or services are provided.it corresponds directly with the value to the customer of the Company's performance to date and includes billed and unbilled amounts. The determination of customer billingsinvoices is based on a systematic reading of meters, fixed reservation charges based on contractual quantities and rates or, in the case of the Great Britain distribution businesses, when information is received from the national settlement system. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $665$750 million as of December 31, 2017.2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Unbilled revenue is reversed in the following month and billed revenue is recorded based on the subsequent meter readings.


Item 7A.Quantitative and Qualitative Disclosures About Market Risk

Item 7A.Quantitative and Qualitative Disclosures About Market Risk

The Company's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. The Company's significant market risks are primarily associated with commodity prices, interest rates, equity prices, foreign currency exchange rates and the extension of credit to counterparties with which the Company transacts. The following discussion addresses the significant market risks associated with the Company's business activities. Each of the Company's business platforms has established guidelines for credit risk management. Refer to Notes 2 and 14 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's contracts accounted for as derivatives.




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Commodity Price Risk


The Company is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk primarily through BHE's ownership of the Utilities as they have an obligation to serve retail customer load in their regulated service territories. The Company also provides nonregulated retail electricity and natural gas services in competitive markets. The Utilities' load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage and transmission and transportation constraints. The Company does not engage in a material amount of proprietary trading activities. To mitigatemanage a portion of its commodity price risk, the Company uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. The Company does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. The Company's exposure to commodity price risk is generally limited by its ability to include commodity costs in regulated rates, which is subject to regulatory lag that occurs between the time the costs are incurred and when the costs are included in regulated rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.


The table that follows summarizes the Company's price risk on commodity contracts accounted for as derivatives, excluding collateral netting of $76$35 million and $74$79 million,, respectively, as of December 31, 20172020 and 2016,2019, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices with the contracted or expected volumes. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).
Fair Value -Estimated Fair Value after
Net AssetHypothetical Change in Price
(Liability)10% increase10% decrease
As of December 31, 2020:
Not designated as hedging contracts$103 $143 $63 
Designated as hedging contracts(4)10 (18)
Total commodity derivative contracts$99 $153 $45 
As of December 31, 2019:
Not designated as hedging contracts$16 $57 $(24)
Designated as hedging contracts(21)(1)(41)
Total commodity derivative contracts$(5)$56 $(65)
 Fair Value - Estimated Fair Value after
 Net Asset Hypothetical Change in Price
 (Liability) 10% increase 10% decrease
As of December 31, 2017:     
Not designated as hedging contracts$(32) $(18) $(46)
Designated as hedging contracts(1) 35
 (37)
Total commodity derivative contracts$(33) $17
 $(83)
      
As of December 31, 2016     
Not designated as hedging contracts$(71) $(37) $(105)
Designated as hedging contracts(16) 19
 (51)
Total commodity derivative contracts$(87) $(18) $(156)


The settled cost of certain of the Company's commodity derivative contracts not designated as hedging contracts is included in regulated rates and, therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose the Company to earnings volatility. Consolidated financial results would be negatively impacted if the costs of wholesale electricity, wholesale natural gas or fuel are higher than what is included in regulated rates, including the impacts of adjustment mechanisms. As of December 31, 20172020 and 2016,2019, a net regulatory liability of $14 million and regulatory asset of $119$77 million, and $148 million, respectively, was recorded related to the net derivative liabilityasset of $32$103 million and $71$16 million,, respectively. The difference between the net regulatory asset and the net derivative liabilityasset relates primarily to a power purchase agreement derivative at BHE Renewables. For the Company's commodity derivative contracts designated as hedging contracts, net unrealized gains and losses associated with interim price movements on commodity derivative contracts, to the extent the hedge is considered effective, generally do not expose the Company to earnings volatility.



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Interest Rate Risk


The Company is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt, future debt issuances and mortgage commitments. The Company manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, the Company's fixed-rate long-term debt does not expose the Company to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if the Company were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of the Company's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 8, 9, 10, 11, and 15 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of the Company's short-short and long-term debt.


As of December 31, 20172020 and 2016,2019, the Company had short- and long-term variable-rate obligations totaling $6.4$4.4 billion and $4.2$4.8 billion,, respectively, that expose the Company to the risk of increased interest expense in the event of increases in short-term interest rates. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on the Company's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 20172020 and 2016.2019.


The Company may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, forward sale commitments or mortgage interest rate lock commitments, to mitigate the Company's exposure to interest rate risk. Changes in fair value of agreements designated as cash flow hedges are reported in accumulated other comprehensive incomeAOCI to the extent the hedge is effective until the forecasted transaction occurs. Changes in fair value of agreements not designated as hedging contracts are recognized in earnings. As of December 31, 20172020 and 2016,2019, the Company had variable-to-fixed interest rate swaps with notional amounts of $679$1,083 million and $714$380 million, respectively, and £136£121 million and £0£141 million, respectively, to protect the Company against an increase in interest rates. Additionally, as of December 31, 20172020 and 2016,2019, the Company had mortgage commitments, net, with notional amounts of $422$1,636 million and $309$913 million, respectively, to protect the Company against an increase in interest rates. The fair value of the Company's interest rate derivative contracts was a net derivative assetliability of $16$3 million and $10 million, respectively, as of December 31, 20172020 and 2016.a net derivative liability of $5 million as of December 31, 2019. A hypothetical 20 basis point increase and a 20 basis point decrease in interest rates would not have a material impact on the Company.


Equity Price Risk


Market prices for equity securities are subject to fluctuation and consequently the amount realized in the subsequent sale of an investment may significantly differ from the reported market value. Fluctuation in the market price of a security may result from perceived changes in the underlying economic characteristics of the investee, the relative price of alternative investments and general market conditions.


As of December 31, 20172020 and 2016,2019, the Company's investment in BYD Company Limited common stock represented approximately 81%91% and 75%69%, respectively, of the total fair value of the Company's equity securities. The majority of the Company's remaining equity securities are held in a trust related to certain trust funds in whichthe decommissioning of nuclear generation assets and the realized and unrealized gains and losses are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates. The following table summarizes the Company's investment in BYD Company Limited as of December 31, 20172020 and 20162019 and the effects of a hypothetical 30% increase and a 30% decrease in market price as of those dates. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).
EstimatedHypothetical
HypotheticalFair Value afterPercentage Increase
FairPriceHypothetical(Decrease) in BHE
ValueChangeChange in PricesShareholders' Equity
As of December 31, 2020$5,897 30% increase$7,666 %
30% decrease4,128 (2)
As of December 31, 2019$1,122 30% increase$1,459 %
30% decrease785 (1)
123

     Estimated Hypothetical
   Hypothetical Fair Value after Percentage Increase
 Fair Price Hypothetical (Decrease) in BHE
 Value Change Change in Prices Shareholders' Equity
        
As of December 31, 2017$1,961
 30% increase $2,549
 1 %
   30% decrease 1,373
 (1)
        
As of December 31, 2016$1,185
 30% increase $1,541
 1 %
   30% decrease 830
 (1)



Foreign Currency Exchange Rate Risk


BHE's business operations and investments outside of the United States increase its risk related to fluctuations in foreign currency exchange rates primarily in relation to the British pound and the Canadian dollar. BHE's reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from BHE's foreign operations changes with the fluctuations of the currency in which they transact.


Northern Powergrid's functional currency is the British pound. As of December 31, 2017,2020, a 10% devaluation in the British pound to the United States dollar would result in the Company's Consolidated Balance Sheet being negatively impacted by a $409$487 million cumulative translation adjustment in AOCI. A 10% devaluation in the average currency exchange rate would have resulted in lower reported earnings for Northern Powergrid of $25$20 million in 2017.2020.


AltaLink'sBHE Canada's functional currency is the Canadian dollar. As of December 31, 2017,2020, a 10% devaluation in the Canadian dollar to the United States dollar would result in the Company's Consolidated Balance Sheet being negatively impacted by a $312$361 million cumulative translation adjustment in AOCI. A 10% devaluation in the average currency exchange rate would have resulted in lower reported earnings for AltaLinkBHE Canada of $17 million in 2017.2020.


As of December 31, 2020, the Company had foreign currency exchange rate swaps with €250 million in aggregate notional amounts to mitigate its Euro denominated debt foreign currency exchange rate risk. A hypothetical 10% decrease in market interest rates would not have resulted in a material decrease in fair value of the foreign currency exchange rate swaps as of December 31, 2020.

Credit Risk


Domestic Regulated Operations


The Utilities are exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent the Utilities' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, the Utilities analyze the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, the Utilities enter into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, the Utilities exercise rights under these arrangements, including calling on the counterparty's credit support arrangement.


As of December 31, 2017,2020, PacifiCorp's aggregate credit exposure fromwith wholesale activities totaled $127 million, based on settlementenergy supply and mark-to-market exposures, net of collateral. As of December 31, 2017, $125 million, or 98.5%, of PacifiCorp's credit exposure was withmarketing counterparties included counterparties having investmentnon-investment grade, internally rated credit ratings by either Moody's Investor Service or Standard & Poor's Rating Services. Asratings. Substantially all of December 31, 2017, three counterparties comprised $91 million, or 72%, of the aggregate credit exposure. The threethese non-investment grade, internally rated counterparties are rated investment grade by Moody's Investor Serviceassociated with long-duration solar and Standard & Poor's Rating Services,wind power purchase agreements from facilities that have not yet achieved commercial operation and for which PacifiCorp ishas no obligation should the facilities not aware of any factors that would likely result in a downgrade of the counterparties' credit ratings to below investment grade over the remaining term of transactions outstanding as of December 31, 2017.achieve commercial operation.


Substantially all of MidAmerican Energy's electric wholesale sales revenue results from participation in RTOs, including the MISO and the PJM. MidAmerican Energy's share of historical losses from defaults by other RTO market participants has not been material. Additionally, as of December 31, 2017,2020, MidAmerican Energy's aggregate direct credit exposure from electric wholesale marketing counterparties was not material.


As of December 31, 2017,2020, NV Energy's aggregate credit exposure from energy related transactions, based on settlement and mark-to-market exposures, net of collateral, was not material.


BHE GT&S primary customers include electric and natural gas distribution utilities and LNG export, import and storage customers. Northern Natural Gas' primary customers include utilities in the upper Midwest. Kern River's primary customers are electric and natural gas distribution utilities, major oil and natural gas companies or affiliates of such companies, electric generating companies, energy marketing and trading companies and financial institutions. As a general policy, collateral is not required for receivables from creditworthy customers. Customers' financial condition and creditworthiness, as defined by the tariff, are regularly evaluated and historical losses have been minimal. In order to provide protection against credit risk, and as permitted by the separate terms of each of BHE GT&S, Northern Natural Gas' and Kern River's tariffs, the companies have required customers that lack creditworthiness to provide cash deposits, letters of credit or other security until they meet the creditworthiness requirements of the respective tariff.

124



Northern Powergrid


The Northern Powergrid Distribution Companies charge fees for the use of their distribution systems to supply companies. The supply companies purchase electricity from generators and traders, sell the electricity to end-use customers and use the Northern Powergrid Distribution Companies' distribution networks pursuant to the multilateral "Distribution Connection and Use of System Agreement." The Northern Powergrid Distribution Companies' customers are concentrated in a small number of electricity supply businesses. During 2017,2020, RWE Npower PLC and certain of its affiliates and British Gas Trading Limited represented approximately 21%15% and 15%12%, respectively, of the total combined distribution revenue of the Northern Powergrid Distribution Companies. The industry operates in accordance with a framework which sets credit limits for each supply business based on its credit rating or payment history and requires them to provide credit cover if their value at risk (measured as being equivalent to 45 days usage) exceeds the credit limit. Acceptable credit typically is provided in the form of a parent company guarantee, letter of credit or an escrow account. Ofgem has indicated that, provided the Northern Powergrid Distribution Companies have implemented credit control, billing and collection in line with best practice guidelines and can demonstrate compliance with the guidelines or are able to satisfactorily explain departure from the guidelines, any bad debt losses arising from supplier default will be recovered through an increase in future allowed income. Losses incurred to date have not been material.


AltaLinkBHE Canada


AltaLink's primary source of operating revenue is the AESO, an entity rated AA- by Standard and Poor's. Because of the dependence on a single customer, any material failure of the customer to fulfill its obligations would significantly impair AltaLink's ability to meet its existing and future obligations. Total operating revenue for AltaLink was $699$653 million for the year ended December 31, 2017.2020.


BHE Renewables


BHE Renewables owns independent power projects in the United States and the Philippines that generally have separate project financing agreements. These projects source of operating revenue is derived primarily from long-term power purchase agreements with single customers, primarily utilities, which expire between 20172019 and 2040.2043. Because of the dependence generally from a single customer at each project, any material failure of the customer to fulfill its obligations would significantly impair that project's ability to meet its existing and future obligations. Total operating revenue for BHE Renewables was $838$936 million for the year ended December 31, 2017.2020.


Other Energy Business


MidAmerican Energy Services, LLC ("MES")MES is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with financial institutions and other market participants. Credit risk may be concentrated to the extent that MES' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, MES analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, MES enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, MES exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.


As of December 31, 2017,2020, MES' aggregate credit exposure from energy related transactions, based on settlement and mark-to-market exposures, net of collateral, was not material.



125


Item 8.Financial Statements and Supplementary Data
Item 8.Financial Statements and Supplementary Data




126


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM




To the Board of Directors and the Shareholders of
Berkshire Hathaway Energy Company
Des Moines, Iowa


Opinion on the Financial Statements


We have audited the accompanying consolidated balance sheets of Berkshire Hathaway Energy Company and subsidiaries (the "Company") as of December 31, 20172020 and 2016,2019, the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2017, and2020, the related notes and the schedules listed in the Index at Item 15(a)(ii)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 20172020 and 2016,2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2020, in conformity with accounting principles generally accepted in the United States of America.


Change in Accounting Principle

In 2019, the Company has changed its method of accounting for leases due to adoption of ASU 2016-02 "Leases".

Basis for Opinion


These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’sCompany's internal control over financial reporting. Accordingly, we express no such opinion.


Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.



Critical Audit Matters



The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing a separate opinion on the critical audit matters or on the accounts or disclosures to which they relate.
/s/Deloitte & Touche LLP



127


Regulatory Matters - Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 7 to the financial statements

Critical Audit Matter Description

The Company, through its regulated businesses, is subject to rate regulation by the Federal Energy Regulatory Commission as well as certain other regulatory commissions (collectively the "Commissions"), which have jurisdiction with respect to the rates of the Company's regulated businesses in the respective service territories where the Company operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense and income tax expense (benefit).

Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow the Company an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While the Company has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit the Company's ability to recover their costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated the Company's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected the Company's filings with the Commissions and the filings with the Commissions by intervenors that may impact the Company's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.
128


Goodwill — NV Energy and Northern Powergrid Reporting Units — Refer to Notes 2 and 22 to the financial statements

Critical Audit Matter Description

The Company's evaluation of goodwill for impairment involves the comparison of the estimated fair value of the reporting unit to the carrying value. The Company used a variety of methods to estimate the reporting unit's fair value, principally discounted projected future net cash flows. The cash flow model requires management to make significant estimates and assumptions related to forecasts of future cash flows, discount rates, and multiples of earnings or rate base. Changes in these assumptions could have a significant impact on either the fair value, the amount of any goodwill impairment charge, or both. The Company's goodwill balance was $11,506 million as of December 31, 2020, of which $2,369 million was allocated to the NV Energy reporting unit ("NV Energy") and $1,000 million was allocated to the Northern Powergrid reporting unit ("Northern Powergrid"). The fair value of NV Energy and Northern Powergrid exceeded their carrying value as of the measurement date and, therefore, no impairment was recognized.

Given the significant judgments made by management to estimate the fair value of the NV Energy and Northern Powergrid reporting units and the difference between their fair value and carrying value, performing audit procedures to evaluate the reasonableness of management's estimates and assumptions related to selection of the forecasts of future cash flows, discount rate, and multiples of earnings or rate base, required a high degree of auditor judgment and an increased extent of effort, including the need to involve our fair value specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the forecasts of future cash flows, discount rate, and multiples of earnings or rate base used by management to estimate the fair value of the NV Energy and Northern Powergrid reporting units included the following, among others:
We evaluated management's ability to accurately forecast future cash flows by comparing actual results to management's historical forecasts.
We evaluated the reasonableness of management's future cash flow forecasts by comparing the forecasts to historical cash flows.
We evaluated the impact of changes in management's forecasts from the October 31, 2020, annual measurement date to December 31, 2020.
With the assistance of our fair value specialists, we evaluated the reasonableness of the valuation methodology, the discount rate, and the multiples of earnings or rate base by:
Testing the source information underlying the determination of the discount rate and the mathematical accuracy of the calculation.
Developing a range of independent estimates and comparing those to the discount rate and multiples of earnings or rate base selected by management.

California and Oregon 2020 Wildfires – Contingencies – See Note 16 to the financial statements

Critical Audit Matter Description

The Company has loss contingencies related to the California and Oregon 2020 wildfires (the "2020 wildfires"). The Company has recorded estimated liabilities, net of expected insurance recoveries, of $136 million as of December 31, 2020, which represents its best estimate of probable losses, net of expected insurance recoveries, as a result of the 2020 wildfires.

We identified wildfire-related contingencies and the related disclosure as a critical audit matter because of the significant judgments made by management to estimate the losses. This required the application of a high degree of judgment and extensive effort when performing audit procedures to evaluate the reasonableness of management's estimate of the losses and disclosure related to wildfire-related loss contingencies.

129


How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's judgments regarding its estimate of losses for wildfire-related contingencies and the related disclosure included the following, among others:
We evaluated management's judgments related to whether a loss was probable and reasonably estimable, reasonably possible, or remote for each individual wildfire by inquiring of management and the Company's external and internal legal counsel regarding the amounts of probable and reasonably estimable, reasonably possible, and remote losses, including the potential impact of information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire, and external information for any evidence that might contradict management's assertions.
We evaluated the estimation methodology for determining the amount of probable loss through inquiries with management and its external and internal legal counsel.
We tested the significant assumptions used in determining the estimate, including, but not limited to, information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire.
We read legal letters from the Company's external and internal legal counsel regarding information regarding ongoing litigation related to the 2020 wildfires and evaluated whether the information therein was consistent with the information obtained in our procedures.
We evaluated whether the Company's disclosures were appropriate and consistent with the information obtained in our procedures.

/s/    Deloitte & Touche LLP

Des Moines, Iowa
February 23, 201826, 2021


We have served as the Company's auditor since 1991.





130


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)

As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$1,290 $1,040 
Restricted cash and cash equivalents140 212 
Trade receivables, net2,107 1,910 
Inventories1,168 873 
Mortgage loans held for sale2,001 1,039 
Other current assets2,741 839 
Total current assets9,447 5,913 
  
Property, plant and equipment, net86,128 73,305 
Goodwill11,506 9,722 
Regulatory assets3,157 2,766 
Investments and restricted cash and cash equivalents and investments14,320 6,255 
Other assets2,758 2,090 
  
Total assets$127,316 $100,051 
 As of December 31,
 2017 2016
ASSETS
Current assets:   
Cash and cash equivalents$935
 $721
Restricted cash and short-term investments327
 211
Trade receivables, net2,014
 1,751
Income taxes receivable334
 
Inventories888
 925
Mortgage loans held for sale465
 359
Other current assets815
 706
Total current assets5,778
 4,673
    
Property, plant and equipment, net65,871
 62,509
Goodwill9,678
 9,010
Regulatory assets2,761
 4,307
Investments and restricted cash and investments4,872
 3,945
Other assets1,248
 996
    
Total assets$90,208
 $85,440


The accompanying notes are an integral part of these consolidated financial statements.

131


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)

As of December 31,
20202019
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable$1,867 $1,839 
Accrued interest555 493 
Accrued property, income and other taxes582 537 
Accrued employee expenses383 285 
Short-term debt2,286 3,214 
Current portion of long-term debt1,839 2,539 
Other current liabilities1,626 1,350 
Total current liabilities9,138 10,257 
  
BHE senior debt12,997 8,231 
BHE junior subordinated debentures100 100 
Subsidiary debt34,930 28,483 
Regulatory liabilities7,221 7,100 
Deferred income taxes11,775 9,653 
Other long-term liabilities4,178 3,649 
Total liabilities80,339 67,473 
  
Commitments and contingencies (Note 16)00
  
Equity:  
BHE shareholders' equity:  
Preferred stock - 100 shares authorized, $0.01 par value, 4 shares issued and outstanding3,750 
Common stock - 115 shares authorized, 0 par value, 76 and 77 shares issued and outstanding
Additional paid-in capital6,377 6,389 
Long-term income tax receivable(658)(530)
Retained earnings35,093 28,296 
Accumulated other comprehensive loss, net(1,552)(1,706)
Total BHE shareholders' equity43,010 32,449 
Noncontrolling interests3,967 129 
Total equity46,977 32,578 
  
Total liabilities and equity$127,316 $100,051 
 As of December 31,
 2017 2016
LIABILITIES AND EQUITY
Current liabilities:   
Accounts payable$1,519
 $1,317
Accrued interest488
 454
Accrued property, income and other taxes354
 389
Accrued employee expenses274
 261
Short-term debt4,488
 1,869
Current portion of long-term debt3,431
 1,006
Other current liabilities1,049
 1,017
Total current liabilities11,603
 6,313
    
BHE senior debt5,452
 7,418
BHE junior subordinated debentures100
 944
Subsidiary debt26,210
 26,748
Regulatory liabilities7,309
 2,933
Deferred income taxes8,242
 13,879
Other long-term liabilities2,984
 2,742
Total liabilities61,900
 60,977
    
Commitments and contingencies (Note 16)
 
    
Equity:   
BHE shareholders' equity:   
Common stock - 115 shares authorized, no par value, 77 shares issued and outstanding
 
Additional paid-in capital6,368
 6,390
Retained earnings22,206
 19,448
Accumulated other comprehensive loss, net(398) (1,511)
Total BHE shareholders' equity28,176
 24,327
Noncontrolling interests132
 136
Total equity28,308
 24,463
    
Total liabilities and equity$90,208
 $85,440


The accompanying notes are an integral part of these consolidated financial statements.

132


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating revenue:
Energy$15,556 $15,371 $15,573 
Real estate5,396 4,473 4,214 
Total operating revenue20,952 19,844 19,787 
 
Operating expenses: 
Energy: 
Cost of sales4,187 4,586 4,769 
Operations and maintenance3,545 3,318 3,440 
Depreciation and amortization3,410 2,965 2,933 
Property and other taxes634 574 573 
Real estate4,885 4,251 4,000 
Total operating expenses16,661 15,694 15,715 
  
Operating income4,291 4,150 4,072 
 
Other income (expense): 
Interest expense(2,021)(1,912)(1,838)
Capitalized interest80 77 61 
Allowance for equity funds165 173 104 
Interest and dividend income71 117 113 
Gains (losses) on marketable securities, net4,797 (288)(538)
Other, net88 97 (9)
Total other income (expense)3,180 (1,736)(2,107)
  
Income before income tax expense (benefit) and equity (loss) income7,471 2,414 1,965 
Income tax expense (benefit)308 (598)(583)
Equity (loss) income(149)(44)43 
Net income7,014 2,968 2,591 
Net income attributable to noncontrolling interests71 18 23 
Net income attributable to BHE shareholders6,943 2,950 2,568 
Preferred dividends26 
Earnings on common shares$6,917 $2,950 $2,568 
 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Energy$15,171
 $14,621
 $15,354
Real estate3,443
 2,801
 2,526
Total operating revenue18,614
 17,422
 17,880
      
Operating costs and expenses:     
Energy:     
Cost of sales4,518
 4,315
 5,079
Operating expense3,773
 3,707
 3,732
Depreciation and amortization2,580
 2,560
 2,399
Real estate3,229
 2,589
 2,342
Total operating costs and expenses14,100
 13,171
 13,552
    
  
Operating income4,514
 4,251
 4,328
      
Other income (expense):     
Interest expense(1,841) (1,854) (1,904)
Capitalized interest45
 139
 74
Allowance for equity funds76
 158
 91
Interest and dividend income111
 120
 107
Other, net(398) 36
 39
Total other income (expense)(2,007) (1,401) (1,593)
      
Income before income tax (benefit) expense and equity (loss) income2,507
 2,850
 2,735
Income tax (benefit) expense(554) 403
 450
Equity (loss) income(151) 123
 115
Net income2,910
 2,570
 2,400
Net income attributable to noncontrolling interests40
 28
 30
Net income attributable to BHE shareholders$2,870
 $2,542
 $2,370


The accompanying notes are an integral part of these consolidated financial statements.



133


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

Years Ended December 31,
202020192018
Net income$7,014 $2,968 $2,591 
 
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax of $(19), $(15) and $8(65)(59)25 
Foreign currency translation adjustment233 327 (494)
Unrealized (losses) gains on cash flow hedges, net of tax of $(3), $(8) and $1(15)(29)
Total other comprehensive income (loss), net of tax153 239 (462)
    
Comprehensive income7,167 3,207 2,129 
Comprehensive income attributable to noncontrolling interests71 18 23 
Comprehensive income attributable to BHE shareholders$7,096 $3,189 $2,106 
 Years Ended December 31,
 2017 2016 2015
      
Net income$2,910
 $2,570
 $2,400
      
Other comprehensive income (loss), net of tax:     
Unrecognized amounts on retirement benefits, net of tax of
$9, $11 and $17
64
 (9) 52
Foreign currency translation adjustment546
 (583) (680)
Unrealized gains (losses) on available-for-sale securities, net of tax of
 $270, $(19) and $129
500
 (30) 225
Unrealized gains (losses) on cash flow hedges, net of tax of
 $(7), $13 and $(7)
3
 19
 (11)
Total other comprehensive income (loss), net of tax1,113
 (603) (414)
      
Comprehensive income4,023
 1,967
 1,986
Comprehensive income attributable to noncontrolling interests40
 28
 30
Comprehensive income attributable to BHE shareholders$3,983
 $1,939
 $1,956


The accompanying notes are an integral part of these consolidated financial statements.



134


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)

BHE Shareholders' Equity
Long-termAccumulated
AdditionalIncomeOther
PreferredCommonPaid-inTaxRetainedComprehensiveNoncontrollingTotal
StockStockCapitalReceivableEarningsLoss, NetInterestsEquity
Balance, December 31, 2017$$$6,368 $— $22,206 $(398)$132 $28,308 
Adoption of ASU 2016-01— — — — 1,085 (1,085)— — 
Net income— — 2,568 20 2,588 
Other comprehensive loss— — (462)(462)
Reclassification of long-term income tax receivable— — — (609)— — — (609)
Long-term income tax receivable adjustments— — 152 (135)— — 17 
Common stock purchases— (6)(101)(107)
Distributions— (23)(23)
Other equity transactions— 11 
Balance, December 31, 20186,371 (457)25,624 (1,945)130 29,723 
Net income— — 2,950 18 2,968 
Other comprehensive income— — 239 239 
Long-term income tax
receivable adjustments
— — 33 (73)— — (40)
Common stock purchases— (15)(278)(293)
Distributions— (22)(22)
Other equity transactions— 
Balance, December 31, 20196,389 (530)28,296 (1,706)129 32,578 
Net income— — 6,943 70 7,013 
Other comprehensive income— — 153 153 
Long-term income tax
receivable adjustments
— — (128)— — (128)
Issuance of preferred stock3,750 — — — — — — 3,750 
Preferred stock dividend— — — — (26)— — (26)
Common stock purchases(6)(120)(126)
Distributions— (121)(121)
Purchase of noncontrolling interest— — (5)��� — — (28)(33)
BHE GT&S acquisition - noncontrolling interest— — — — — — 3,916 3,916 
Other equity transactions— (1)
Balance, December 31, 2020$3,750 $$6,377 $(658)$35,093 $(1,552)$3,967 $46,977 
 BHE Shareholders' Equity    
         Accumulated    
     Additional   Other    
 Common Paid-in Retained Comprehensive Noncontrolling Total
 Shares Stock Capital Earnings Loss, Net Interests Equity
              
Balance, December 31, 201477
 $
 $6,423
 $14,513
 $(494) $131
 $20,573
Adoption of ASC 853
 
 
 56
 
 11
 67
Net income
 
 
 2,370
 
 18
 2,388
Other comprehensive loss
 
 
 
 (414) 
 (414)
Distributions
 
 
 
 
 (21) (21)
Common stock purchases
 
 (3) (33) 
 
 (36)
Other equity transactions
 
 (17) 
 
 (5) (22)
Balance, December 31, 201577
 
 6,403
 16,906
 (908) 134
 22,535
Net income
 
 
 2,542
 
 14
 2,556
Other comprehensive loss
 
 
 
 (603) 
 (603)
Distributions
 
 
 
 
 (20) (20)
Other equity transactions
 
 (13) 
 
 8
 (5)
Balance, December 31, 201677
 
 6,390
 19,448
 (1,511) 136
 24,463
Net income
 
 
 2,870
 
 22
 2,892
Other comprehensive income
 
 
 
 1,113
 
 1,113
Distributions
 
 
 
 
 (22) (22)
Common stock purchases
 
 (1) (18) 
 
 (19)
Common stock exchange
 
 (6) (94) 
 
 (100)
Other equity transactions
 
 (15) 
 
 (4) (19)
Balance, December 31, 201777
 $
 $6,368
 $22,206
 $(398) $132
 $28,308


The accompanying notes are an integral part of these consolidated financial statements.



135


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,Years Ended December 31,
2017 2016 2015202020192018
Cash flows from operating activities:     Cash flows from operating activities:
Net income$2,910
 $2,570
 $2,400
Net income$7,014 $2,968 $2,591 
Adjustments to reconcile net income to net cash flows from operating activities:     Adjustments to reconcile net income to net cash flows from operating activities:
Loss (gain) on other items, net455
 62
 (8)
(Gains) losses on marketable securities, net(Gains) losses on marketable securities, net(4,797)288 538 
Losses on other items, netLosses on other items, net54 43 56 
Depreciation and amortization2,646
 2,591
 2,428
Depreciation and amortization3,455 3,011 2,984 
Allowance for equity funds(76) (158) (91)Allowance for equity funds(165)(173)(104)
Equity loss (income), net of distributions260
 (67) (38)
Equity loss, net of distributionsEquity loss, net of distributions248 93 45 
Changes in regulatory assets and liabilities31
 (34) 356
Changes in regulatory assets and liabilities(415)153 196 
Deferred income taxes and amortization of investment tax credits19
 1,090
 1,265
Deferred income taxes and amortization of investment tax credits1,880 290 
Other, net(2) (142) 19
Other, net(77)23 67 
Changes in other operating assets and liabilities, net of effects from acquisitions:     Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets(86) (158) (9)Trade receivables and other assets(1,318)(372)72 
Derivative collateral, net(22) 32
 (14)Derivative collateral, net43 (25)27 
Pension and other postretirement benefit plans(91) (79) (11)Pension and other postretirement benefit plans(65)(51)(54)
Accrued property, income and other taxes(28) 377
 877
Accrued property, income and other taxes, netAccrued property, income and other taxes, net(134)(16)199 
Accounts payable and other liabilities50
 (28) (194)Accounts payable and other liabilities501 (26)145 
Net cash flows from operating activities6,066
 6,056
 6,980
Net cash flows from operating activities6,224 6,206 6,770 
     
Cash flows from investing activities:     Cash flows from investing activities:
Capital expenditures(4,571) (5,090) (5,875)Capital expenditures(6,765)(7,364)(6,241)
Acquisitions, net of cash acquired(1,113) (66) (164)Acquisitions, net of cash acquired(2,397)(27)(106)
Increase in restricted cash and investments(81) (36) (28)
Purchases of available-for-sale securities(190) (141) (144)
Proceeds from sales of available-for-sale securities202
 191
 142
Purchases of marketable securitiesPurchases of marketable securities(370)(262)(329)
Proceeds from sales of marketable securitiesProceeds from sales of marketable securities325 238 287 
Equity method investments(368) (570) (202)Equity method investments(2,724)(1,617)(683)
Other, net(12) (34) 41
Other, net(1,234)69 83 
Net cash flows from investing activities(6,133) (5,746) (6,230)Net cash flows from investing activities(13,165)(8,963)(6,989)
     
Cash flows from financing activities:     Cash flows from financing activities:
Repayments of BHE senior debt and junior subordinated debentures(2,323) (2,000) (850)
Proceeds from BHE senior debtProceeds from BHE senior debt5,212 3,166 
Repayments of BHE senior debtRepayments of BHE senior debt(350)(1,045)
Proceeds from issuance of preferred stockProceeds from issuance of preferred stock3,750 
Common stock purchases(19) 
 (36)Common stock purchases(126)(293)(107)
Proceeds from subsidiary debt1,763
 2,327
 2,479
Proceeds from subsidiary debt2,688 4,699 2,352 
Repayments of subsidiary debt(1,000) (1,831) (1,354)Repayments of subsidiary debt(2,841)(1,914)(2,422)
Net proceeds from (repayments of) short-term debt2,361
 879
 (421)
Tender offer premium paid(435) 
 
Net (repayments of) proceeds from short-term debtNet (repayments of) proceeds from short-term debt(939)684 (1,946)
Purchase of noncontrolling interestPurchase of noncontrolling interest(33)(131)
Other, net(73) (65) (73)Other, net(258)(52)(41)
Net cash flows from financing activities274
 (690) (255)Net cash flows from financing activities7,103 3,124 (174)
     
Effect of exchange rate changes7
 (7) (4)Effect of exchange rate changes15 18 (7)
     
Net change in cash and cash equivalents214
 (387) 491
Cash and cash equivalents at beginning of period721
 1,108
 617
Cash and cash equivalents at end of period$935
 $721
 $1,108
Net change in cash and cash equivalents and restricted cash and cash equivalentsNet change in cash and cash equivalents and restricted cash and cash equivalents177 385 (400)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of periodCash and cash equivalents and restricted cash and cash equivalents at beginning of period1,268 883 1,283 
Cash and cash equivalents and restricted cash and cash equivalents at end of periodCash and cash equivalents and restricted cash and cash equivalents at end of period$1,445 $1,268 $883 


The accompanying notes are an integral part of these consolidated financial statements.

136


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(1)
Organization and Operations

(1)Organization and Operations

Berkshire Hathaway Energy Company ("BHE") is a holding company that owns a highly diversified portfolio of locally managed businesses principally engaged in the energy industry (collectively with its subsidiaries, the "Company") and is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").


The Company's operations are organized as eight8 business segments: PacifiCorp and its subsidiaries ("PacifiCorp"), MidAmerican Funding, LLC and its subsidiaries ("MidAmerican Funding") (which primarily consists of MidAmerican Energy Company ("MidAmerican Energy")), NV Energy, Inc. and its subsidiaries ("NV Energy") (which primarily consists of Nevada Power Company and its subsidiaries ("Nevada Power") and Sierra Pacific Power Company ("Sierra Pacific")), Northern Powergrid Holdings Company ("Northern Powergrid") (which primarily consists of Northern Powergrid (Northeast) Limitedplc and Northern Powergrid (Yorkshire) plc), BHE Pipeline Group, LLC and its subsidiaries (which primarily consists of BHE GT&S, LLC ("BHE GT&S"), Northern Natural Gas Company ("Northern Natural Gas") and Kern River Gas Transmission Company ("Kern River")), BHE Transmission (which consists of BHE Canada Holdings Corporation ("AltaLink"BHE Canada") (which primarily consists of AltaLink, L.P. ("ALP"AltaLink")) and BHE U.S. Transmission, LLC), BHE Renewables (which primarily consists of BHE Renewables, LLC and CalEnergy Philippines) and HomeServices of America, Inc. (collectively withand its subsidiaries "HomeServices"("HomeServices"). The Company, through these locally managed and operated businesses, owns four4 utility companies in the United States serving customers in 11 states, two2 electricity distribution companies in Great Britain, two5 interstate natural gas pipeline companies and interests in a liquefied natural gas ("LNG") export, import and storage facility in the United States, an electric transmission business in Canada, interests in electric transmission businesses in the United States, a renewable energy business primarily investing in wind, solar, wind, geothermal and hydroelectric projects, the second largest residential real estate brokerage firm in the United States and one1 of the largest residential real estate brokerage franchise networks in the United States.


(2)Summary of Significant Accounting Policies


Basis of Consolidation and Presentation


The Consolidated Financial Statements include the accounts of BHE and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. The Consolidated Statements of Operations include the revenue and expenses of any acquired entities from the date of acquisition. The Company consolidates variable interest entities ("VIE") in which it possesses both (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE. Intercompany accounts and transactions have been eliminated.


Use of Estimates in Preparation of Financial Statements


The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; impairment of goodwill; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; fair value of assets acquired and liabilities assumed in business combinations; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.


Accounting for the Effects of Certain Types of Regulation


PacifiCorp, MidAmerican Energy, Nevada Power, Sierra Pacific, BHE GT&S, Northern Natural Gas, Kern River and ALPAltaLink (the "Regulated Businesses") prepare their financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, the Regulated Businesses defer the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.



137


The Company continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit the Regulated Businesses' ability to recover their costs. The Company believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal, state and provincial levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").


Fair Value Measurements


As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Alternative valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.


Cash Equivalents and Restricted Cash and Cash Equivalents and Investments


Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. Restricted amounts are included in other current assetsrestricted cash and cash equivalents and investments and restricted cash and cash equivalents and investments on the Consolidated Balance Sheets.


Investments


    Fixed Maturity Securities

The Company's management determines the appropriate classification of investments in debt and equityfixed maturity securities at the acquisition date and reevaluates the classification at each balance sheet date. Investments and restricted cash and cash equivalents and investments that management does not intend to use or is restricted from using in current operations are presented as noncurrent on the Consolidated Balance Sheets.


Available-for-sale securitiesinvestments are carried at fair value with realized gains and losses, as determined on a specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of tax. Realized and unrealized gains and losses on fixed maturity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates. Trading securitiesinvestments are carried at fair value with realized and unrealized gains and losseschanges in fair value recognized in earnings. Held-to-maturity securitiesinvestments are carried at amortized cost, reflecting the ability and intent to hold the securities to maturity.

The Company utilizesdifference between the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when an investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, the Company records the investment atoriginal cost and subsequently increases or decreases the carryingmaturity value of a fixed maturity security is amortized to earnings using the investment by the Company's share of the net earnings or losses and other comprehensive income (loss) ("OCI") of the investee. The Company records dividends or other equity distributions as reductions in the carrying value of the investment. Certain equity investments are presented on the Consolidated Balance Sheets net of related investment tax credits.interest method.



InvestmentsInvestment gains and losses arise when investments are sold (as determined on a specific identification basis) or are other-than-temporarily impaired.impaired with respect to securities classified as available-for-sale. If a decline inthe value of ana fixed maturity investment declines to below amortized cost and the decline is deemed other than temporary, the amortized cost of the investment is written downreduced to fair value, with a corresponding charge to earnings. Factors considered in judging whether an impairment is other than temporary include: the financial condition, business prospects and creditworthiness of the issuer; the relative amount of the decline; the Company's ability and intent to hold the investment until the fair value recovers; and the length of time that fair value has been less than cost. Impairment losses on equity securities are charged to earnings. With respect to an investment in a debt security, anyAny resulting impairment loss is recognized in earnings if the Company intends to sell, or expects to be required to sell, the debt security before its amortized cost is recovered. If the Company does not expect to ultimately recover the amortized cost basis even if it does not intend to sell the security, the credit loss component is recognized in earnings and any difference between fair value and the amortized cost basis, net of the credit loss, is reflected in OCI.other comprehensive income (loss) ("OCI"). For regulated fixed maturity investments, any impairment charge is offset by the establishment of a regulatory asset to the extent recovery in regulated rates is probable.


138


    Equity Securities

Investments in equity securities are carried at fair value with changes in fair value recognized in earnings as a component of gains (losses) on marketable securities, net. Prior to January 1, 2018, substantially all of the Company's equity security investments were classified as available-for-sale with changes in fair value recognized in OCI, net of income taxes. All changes in fair value of equity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates.

    Equity Method Investments

The Company utilizes the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when the investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, the Company records the investment at cost and subsequently increases or decreases the carrying value of the investment by the Company's share of the net earnings or losses and OCI of the investee. The Company records dividends or other equity distributions as reductions in the carrying value of the investment. Certain equity investments are presented on the Consolidated Balance Sheets net of related investment tax credits.

Allowance for Doubtful AccountsCredit Losses


Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for doubtful accounts.credit losses. The allowance for doubtful accountscredit losses is based on the Company's assessment of the collectibilitycollectability of amounts owed to the Company by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, the Company primarily utilizes credit loss history. However, the Company may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. As of December 31, 20172020 and 2016,2019, the allowance for doubtful accountscredit losses totaled $40$77 million and $33$44 million,, respectively, and is included in trade receivables, net on the Consolidated Balance Sheets.


Derivatives


The Company employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price, interest rate, and foreign currency exchange rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements. Cash collateral received from or paid to counterparties to secure derivative contract assets or liabilities in excess of amounts offset is included in other current assets on the Consolidated Balance Sheets.


Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or cost of sales on the Consolidated Statements of Operations.


For the Company's derivatives not designated as hedging contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities. For the Company's derivatives not designated as hedging contracts and for which changes in fair value are not recorded as regulatory assets and liabilities, unrealized gains and losses are recognized on the Consolidated Statements of Operations as operating revenue for sales contracts; cost of sales and operating expense for purchase contracts and electricity, natural gas and fuel swap contracts; and other, net for interest rate swap derivatives.


For the Company's derivatives designated as hedging contracts, the Company formally assesses, at inception and thereafter, whether the hedging contract is highly effective in offsetting changes in the hedged item. The Company formally documents hedging activity by transaction type and risk management strategy.


139


Changes in the estimated fair value of a derivative contract designated and qualified as a cash flow hedge, to the extent effective, are included on the Consolidated Statements of Changes in Equity as AOCI, net of tax, until the contract settles and the hedged item is recognized in earnings. The Company discontinues hedge accounting prospectively when it has determined that a derivative contract no longer qualifies as an effective hedge, or when it is no longer probable that the hedged forecasted transaction will occur. When hedge accounting is discontinued because the derivative contract no longer qualifies as an effective hedge, future changes in the estimated fair value of the derivative contract are charged to earnings. Gains and losses related to discontinued hedges that were previously recorded in AOCI will remain in AOCI until the contract settles and the hedged item is recognized in earnings, unless it becomes probable that the hedged forecasted transaction will not occur at which time associated deferred amounts in AOCI are immediately recognized in earnings.



Inventories


Inventories consist mainly of fuel, which includes coal stocks, stored gas and fuel oil, totaling $352$382 million and $402$257 million as of December 31, 20172020 and 2016,2019, respectively, and materials and supplies totaling $536$786 million and $523$616 million as of December 31, 20172020 and 2016,2019, respectively. The cost of materials and supplies, coal stocks and fuel oil is determined primarily using the average cost method. The cost of stored gas is determined using either the last-in-first-out ("LIFO") method or the lower of average cost or market. With respect to inventories carried at LIFO cost, the replacement cost would be $22$10 million higher and $27$2 million higher lower as of December 31, 20172020 and 2016,2019, respectively.


Property, Plant and Equipment, Net


General


Additions to property, plant and equipment are recorded at cost. The Company capitalizes all construction-related material,materials, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include capitalized interest, including debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable to the Regulated Businesses. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. Additionally, MidAmerican Energy has regulatory arrangements in Iowa in which the carrying cost of certain utility plant has been reduced for amounts associated with electric returns on equity exceeding specified thresholds.
Depreciation and amortization are generally computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by the Company's various regulatory authorities. Depreciation studies are completed by the Regulated Businesses to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.


Generally when the Company retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.


Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, is capitalized by the Regulated Businesses as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC") and the Alberta Utilities Commission ("AUC"). After construction is completed, the Company is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.


140


Asset Retirement Obligations


The Company recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. The Company's AROs are primarily related to the decommissioning of nuclear generating facilities and obligations associated with its other generating facilities and offshore natural gas pipelines. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. For the Regulated Businesses, the difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.



Impairment


The Company evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. The impacts of regulation are considered when evaluating the carrying value of regulated assets.


Leases

The Company has non-cancelable operating leases primarily for office space, office equipment, generating facilities, land and rail cars and finance leases consisting primarily of transmission assets, generating facilities and vehicles. These leases generally require the Company to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. The Company does not include options in its lease calculations unless there is a triggering event indicating the Company is reasonably certain to exercise the option. The Company's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Leases will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

The Company's leases of generating facilities generally are for the long-term purchase of electric energy, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

The Company's operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Goodwill


Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations. The Company evaluates goodwill for impairment at least annually and completed its annual review as of October 31. When evaluating goodwill for impairment, the Company estimates the fair value of theits reporting unit.units. If the carrying amount of a reporting unit, including goodwill, exceeds the estimated fair value, then the identifiable assets, including identifiable intangible assets, and liabilities of the reporting unit are estimated at fair value as of the current testing date. The excess of the estimated fair value of the reporting unit over the current estimated fair value of net assets establishes the implied value of goodwill. The excess of the recorded goodwill over the implied goodwill value is charged to earnings as an impairment loss. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. The Company uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings;earnings or rate base; and an appropriate discount rate. In estimating future cash flows, the Company incorporates current market information, as well as historical factors. As such, the determination of fair value incorporates significant unobservable inputs. During 2017, 20162020, 2019 and 2015,2018, the Company did not record any material goodwill impairments.

141


The Company records goodwill adjustments for (a) the tax benefit associated with the excess of tax-deductible goodwill over the reported amount of goodwill and (b) changes to the purchase price allocation prior to the end of the measurement period, which is not to exceed one year from the acquisition date.


Revenue Recognition


    Customer Revenue

The Company uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The Company records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations. In the event one of the parties to a contract has performed before the other, the Company would recognize a contract asset or contract liability depending on the relationship between the Company's performance and the customer's payment.

Energy BusinessesProducts and Services


RevenueA majority of the Company's energy revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, business customers is recognized as electricity ortransmission, distribution and natural gas and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. The Company's energy revenue that is nonregulated primarily relates to the Company's renewable energy business.

Revenue recognized is equal to what the Company has the right to invoice as it corresponds directly with the value to the customer of the Company's performance to date and includes billed and unbilled amounts. As of December 31, 20172020 and 2016, unbilled revenue was $665 million and $643 million, respectively, and is included in2019, trade receivables, net on the Consolidated Balance Sheets.Sheets relate substantially to Customer Revenue, including unbilled revenue of $750 million and $638 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy businessesproducts and services are established by regulators or contractual arrangements.arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

        Real Estate Services

The Company records sales,Company's HomeServices reportable segment consists of separate brokerage, mortgage and franchise businesses. Rates charged for brokerage, mortgage and excise taxes collected directly from customersfranchise real estate services are established through contractual arrangements that establish the transaction price and remitted directlythe allocation of the price amongst the separate performance obligations.

The full-service residential real estate brokerage business has performance obligations to deliver integrated real estate services including brokerage services, title and closing services, property and casualty insurance, home warranties, relocation services, and other home-related services to customers. All performance obligations related to the taxing authorities onfull-service residential real estate brokerage business are satisfied in less than one year at the point in time when a net basis on the Consolidated Statements of Operations.

Real Estate Commission Revenue, Mortgage Revenue and Franchise Royalty Fees

real estate transaction is closed or when services are provided. Commission revenue from real estate brokerage transactions and related amounts due to agents are recognized when a real estate transaction is closed. Title and escrow closing fee revenue from real estate transactions and related amounts due to the title insurer are recognized at closing. Payments for amounts billed are generally due from the customer at closing.

The franchise business operates a network that has performance obligations to provide the right to use certain brand names and other related service marks as well as to provide orientation programs, training and consultation services, advertising programs and other services to its franchisees. The performance obligations related to the franchise business are satisfied over time or when the services are provided. Franchise royalty fees are sales-based variable consideration and are based on a percentage of commissions earned by franchisees on real estate sales, which are recognized when the sale closes. Meetings and training revenue, referral fees, late fees, service fees and franchise termination fees are earned when services have been completed. Payments for amounts billed are generally due from the franchisee within 30 days of billing.


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    Other Revenue

Energy Products and Services

Other revenue consists primarily of revenue related to power purchase agreements not considered Customer Revenue as they are recognized in accordance with ASC 815, "Derivatives and Hedging" and ASC 842, "Leases" and certain non-tariff-based revenue approved by the regulator that is not considered Customer Revenue within ASC 606, "Revenue from Contracts with Customers."

        Real Estate Service

Mortgage and other revenue consists primarily of revenue related to the mortgage business. Mortgage fee revenue consists of amounts earned related to application and underwriting fees, and fees on canceled loans. Fees associated with the origination and acquisition of mortgage loans are recognized as earned. Franchise royalty feesThese amounts are based on a percentage of commissions earned by franchisees on real estate sales andnot considered Customer Revenue as they are recognized when the sale closes.in accordance with ASC 815, "Derivatives and Hedging," ASC 825, "Financial Instruments" and ASC 860, "Transfers and Servicing."


Unamortized Debt Premiums, Discounts and Debt Issuance Costs


Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.



Foreign Currency


The accounts of foreign-based subsidiaries are measured in most instances using the local currency of the subsidiary as the functional currency. Revenue and expenses of these businesses are translated into United States dollars at the average exchange rate for the period. Assets and liabilities are translated at the exchange rate as of the end of the reporting period. Gains or losses from translating the financial statements of foreign-based operations are included in equity as a component of AOCI. Gains or losses arising from transactions denominated in a currency other than the functional currency of the entity that is party to the transaction are included in earnings.


Income Taxes


Berkshire Hathaway includes the Company in its consolidated United States federal income tax return. The Company's provision for income taxes has been computed on a stand-alone basis. Berkshire Hathaway includes the Company in its consolidated United States federal and Iowa state income tax returns and the majority of the Company's United States federal income tax is remitted to or received from Berkshire Hathaway. The Company records the deferred income tax assets associated with the state of Iowa net operating loss carryforward as a long-term income tax receivable from Berkshire Hathaway as a component of BHE's shareholders' equity due to the long-term related-party nature of the income tax receivable.


Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using estimatedenacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of OCI are charged or credited directly to OCI. On December 22, 2017, the Tax Cuts and Jobs Act ("2017 Tax Reform") was signed into law which, among other items, reduces the federal corporate tax rate from 35% to 21%. Changes in deferred income tax assets and liabilities that are associated with income tax benefits and expense for the federal tax rate change from 35% to 21%, certain property-related basis differences and other various differences that the Company's regulated businesses deems probable to be passed on to their customers in most state and provincial jurisdictions are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory jurisdictions.commissions.


The 2017 Tax Reform also creates a one-time repatriation taxCompany has not established deferred income taxes on the Company's undistributed foreign corporations' post-1986 accumulated earnings and profits. Therefore, the cumulativeits undistributed foreign earnings were deemed repatriatedthat have been determined by management to the United States as of December 31, 2017. The Company currently does not believe the deemed repatriation has altered the Company's existing assertion that undistributed earnings will be reinvested indefinitely; however, the Company periodically evaluates its capital requirementsrequirements. If circumstances change in the future and that conclusion could change. As a resultportion of the 2017 Tax Reform, futureCompany's undistributed foreign earnings arewere repatriated, the dividends may be subject to taxation in the United States but the tax is not expected to be subject to tax in the United States.material.


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In determining the Company's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the Company's various regulatory jurisdictions.commissions. The Company's income tax returns are subject to continuous examinations by federal, state, local and foreign income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of the Company's federal, state, local and foreign income tax examinations is uncertain, the Company believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on the Company's consolidated financial results. The Company's unrecognized tax benefits are primarily included in accrued property, income and other taxes and other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.



New Accounting Pronouncements(3)    Business Acquisitions


In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, which amends FASB Accounting Standards Codification ("ASC") Topic 220, "Income Statement - Reporting Comprehensive Income." The amendments in this guidance require a reclassification from accumulated other comprehensive income to retained earnings for the stranded tax effects that were created from the enactmentBHE GT&S Acquisition

Transaction Description

On November 1, 2020, BHE completed its acquisition of substantially all of the 2017 Tax Reform.natural gas transmission and storage business of Dominion Energy, Inc. ("DEI") and Dominion Energy Questar Corporation ("Dominion Questar"), exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "Questar Pipeline Group") (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, after post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments, for 100% of the equity interests of Eastern Gas Transmission and Storage, Inc. ("EGTS") (formerly known as Dominion Energy Transmission, Inc.) and Carolina Gas Transmission, LLC (formerly known as Dominion Energy Carolina Gas Transmission, LLC); 50% of the equity interests of Iroquois Gas Transmission System L.P. ("Iroquois"); and a 25% economic interest in Cove Point LNG, LP ("Cove Point") (formerly known as Dominion Energy Cove Point LNG, LP), consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE became the operator of Cove Point after the GT&S Transaction. The reclassification isGT&S Transaction received clearance under the difference betweenHart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR Approval") in October 2020, and approval by the historical income tax ratesDepartment of Energy with respect to a change in control of Cove Point and the enacted rateFederal Communications Commission with respect to the transfer of certain licenses earlier in 2020.

On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the items previously recordedQuestar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in accumulatedthe first half of 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. DEI is also a party to the Q-Pipe Purchase Agreement, as guarantor for certain provisions regarding the Purchase Price Repayment Amount (as defined below) and other comprehensive income. This guidancematters.

Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration of approximately $1.3 billion, which is effectiveincluded in other current assets on the Consolidated Balance Sheet as of December 31, 2020, to Dominion Questar on November 2, 2020. If the Q-Pipe Transaction does not close, Dominion Questar has agreed to repay all or (depending on the repayment date) substantially all of the Q-Pipe Cash Consideration (the "Purchase Price Repayment Amount") to BHE on or prior to December 31, 2021. If HSR Approval has not been obtained by June 30, 2021, upon BHE's written request, Dominion Questar will seek alternative buyers for interim and annual reporting periods beginningall or a material portion of the Questar Pipeline Group (an "Alternative Transaction"). The Purchase Price Repayment Amount may be paid in cash or in shares of common stock, no par value, of DEI, or a combination thereof, subject to certain limitations as to stock repayments set forth in the Q-Pipe Purchase Agreement; provided any payment on or after December 15, 2018,2021 must be paid in cash only.

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The assets acquired in the GT&S Transaction include (i) approximately 5,400 miles of operated natural gas transmission, gathering and storage pipelines with early adoption permitted,approximately 12.5 billion cubic feet ("Bcf") per day of design capacity; (ii) 420 Bcf of operated natural gas storage design capacity, of which 306 Bcf is owned by BHE GT&S; and (iii) a liquefied natural gas ("LNG") export, import and storage facility with LNG storage capacity of approximately 14.6 Bcfe.

On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration.

Included in BHE's Consolidated Statement of Operations within the BHE Pipeline Group reportable segment for the year ended December 31, 2020, is requiredoperating revenue and net income attributable to be adopted retrospectivelyBHE shareholders of $331 million and $73 million, respectively, as a result of including BHE GT&S from November 1, 2020. Additionally, BHE incurred $9 million of direct transaction costs associated with the GT&S Transaction that are included in operating expense on the Consolidated Statement of Operations for the year ended December 31, 2020.

Preliminary Allocation of Purchase Price

BHE GT&S' assets acquired and liabilities assumed were measured at estimated fair value at closing. The majority of BHE GT&S' operations are subject to each period(s) in which the effectrate-setting authority of the changeFERC and are accounted for pursuant to GAAP, including the authoritative guidance for regulated operations. The rate-setting and cost-recovery provisions provide for revenues derived from costs, including a return on investment of assets and liabilities included in the 2017 Tax Reform is recognized. Considering the significant components of the Company's accumulated other comprehensive income relate to (a) unrecognized amounts on retirement benefits of foreign pension plans and (b) unrealized gains on available-for-sale securities, which were reclassified as required by ASU No. 2016-01 that was adopted on January 1, 2018, the adoption of ASU No. 2018-02 will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In August 2017, the FASB issued ASU No. 2017-12, which amends FASB ASC Topic 815, "Derivatives and Hedging." The amendments in this guidance update the hedge accounting model to enable entities to better portray the economics of their risk management activities in the financial statements, expands an entity's ability to hedge non-financial and financial risk components and reduces complexity in fair value hedges of interest rate risk. In addition, it eliminatesbase. As such, the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in fair value of a hedging instrumentBHE GT&S' assets acquired and liabilities assumed subject to be presented inthese rate-setting provisions are assumed to approximate their carrying values and, therefore, no fair value adjustments have been reflected related to these amounts.

The fair value of BHE GT&S' assets acquired and liabilities assumed not subject to the samerate-setting provisions discussed above was determined using an income statement line as the hedged item and also eases certain documentation and assessment requirements. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach by means of a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of adopting this guidance on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In March 2017, the FASB issued ASU No. 2017-07, which amends FASB ASC Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. The Company adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. The Company adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. The Company adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements.


In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. In January 2018, the FASB issued ASU No. 2018-01 that provides for an optional transition practical expedient allowing companies to not have to evaluate existing land easements if they were not previously accounted for under ASC Topic 840, "Leases." This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. The Company plans to adopt this guidance effective January 1, 2019income approach is based on significant estimates and is currently evaluatingassumptions, including Level 3 inputs, which are judgmental in nature. The estimates and assumptions include the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In January 2016, the FASB issued ASU No. 2016-01, which amends FASB ASC Subtopic 825-10, "Financial Instruments - Overall." The amendments in this guidance address certain aspects of recognition, measurement, presentation and disclosure of financial instruments including a requirement that all investments in equity securities that do not qualify for equity method accounting or result in consolidation of the investee be measured at fair value with changes in fair value recognized in net income. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted, and is required to be adopted prospectively by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The Company adopted this guidance effective January 1, 2018 with a cumulative-effect increase to retained earnings of $1,085 million and a corresponding decrease to AOCI.

In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016 and 2017, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. The Company adopted this guidance effective January 1, 2018 under the modified retrospective method and the adoption will not have an impact on its Consolidated Financial Statements but will increase the disclosures included within Notes to Consolidated Financial Statements. Theprojected timing and amount of revenue recognized after adoptionfuture cash flows, discount rates reflecting the risk inherent in the future cash flows and future market prices. Additionally, the fair value of long-term debt assumed was determined based on quoted market prices, which is considered a Level 2 fair value measurement.

The fair value of certain contracts and property, plant and equipment related to non-regulated operations, certain regulatory assets and other items included in rate base, an equity method investment and deferred income tax amounts are provisional and are subject to revision for up to 12 months following the acquisition date until the related valuations are completed. These items may be adjusted through regulatory assets or liabilities, to the extent recoverable in rates, or goodwill provided additional information is obtained about the facts and circumstances that existed as of the new guidance willacquisition date. Such information includes, but is not be different than before as a majority of revenue is recognized when the Company has the right to invoice as it corresponds directly with the valuelimited to, the customerreceipt of further information regarding the fair value of the Company's performancecontracts and property, plant and equipment related to date. non-regulated operations, the equity method investment and any associated deferred income tax amounts as well as the evolution of the rate-making process for regulated operations.


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The Company's current plan is to quantitatively disaggregate revenue infollowing table summarizes the required financial statement footnote by regulated energy, nonregulated energy and real estate, with further disaggregationpreliminary fair values of regulated energy by customer class and line of business and real estate by line of business.

(3)    Business Acquisitions

In 2017, the Company completed various acquisitions totaling $1.1 billion, net of cash acquired. The purchase price for each acquisition was allocated to the assets acquired and liabilities assumed which primarily related to residential real estate brokerage businesses, development and construction costs for the 110-megawatt Alamo 6 and the 50-megawatt Pearl solar projects, and the remaining 25% interest in the Silverhawk natural gas-fueled generation facility at Nevada Power. As a resultas of the various acquisitions,acquisition date (in millions):
Fair Value
Current assets, including cash and cash equivalents of $104$569 
Property, plant and equipment9,254 
Goodwill1,732 
Regulatory assets108 
Deferred income taxes275 
Other long-term assets1,424 
Total assets13,362 
Current liabilities, including current portion of long-term debt of $1,2001,567 
Long-term debt, less current portion4,415 
Regulatory liabilities661 
Other long-term liabilities289 
Total liabilities6,932 
Noncontrolling interest3,916 
Net assets acquired$2,514 

Goodwill

The excess of the Company acquired assets of $1.1 billion, assumed liabilities of $487 million and recognized goodwill of $508 million.

In 2016 and 2015, the Company completed various acquisitions totaling $66 million and $164 million, net of cash acquired, respectively. The purchase price for each acquisition was allocated topaid over the estimated fair values of the identifiable assets acquired and liabilities assumed. The assets acquired consisted of property, plant and equipment, development and construction costs for renewable projects, other working capital items, goodwill of $50 million and $33 million, respectively, and other identifiable intangible assets. The liabilities assumed totaled $54 million$1.7 billion and $84 million, respectively.

is reflected as goodwill in the BHE Pipeline Group reportable segment. The goodwill reflects the value paid primarily for the long-term opportunity to improve operating results through the efficient management of operating expenses and the deployment of capital. Goodwill is not amortized, but rather is reviewed annually for impairment or more frequently if indicators of impairment exist. For income tax purposes, the GT&S Acquisition is treated as a deemed asset acquisition resulting from tax elections being made, therefore all tax goodwill is deductible. Due to book and tax basis differences of certain items, book and tax goodwill will differ. The amount of tax goodwill is approximately $0.9 billion and will be amortized over 15 years.

Pro Forma Financial Information

The following unaudited pro forma financial information reflects the consolidated results of operations of BHE and the amortization of the purchase price adjustments assuming the acquisition had taken place on January 1, 2019, excluding non-recurring transaction costs incurred by BHE during 2020 (in millions):
20202019
Operating revenue$22,581 $21,979 
Net income attributable to BHE shareholders$6,800 $3,271 


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(4)Property, Plant and Equipment, Net


Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable
Life20202019
Regulated assets:
Utility generation, transmission and distribution systems5-80 years$86,730 $81,127 
Interstate natural gas pipeline assets3-80 years16,667 8,165 
103,397 89,292 
Accumulated depreciation and amortization(30,662)(26,353)
Regulated assets, net72,735 62,939 
Nonregulated assets:
Independent power plants5-30 years7,012 6,983 
Other assets3-40 years5,659 1,834 
12,671 8,817 
Accumulated depreciation and amortization(2,586)(2,183)
Nonregulated assets, net10,085 6,634 
Net operating assets82,820 69,573 
Construction work-in-progress3,308 3,732 
Property, plant and equipment, net$86,128 $73,305 
 Depreciable    
 Life 2017 2016
Regulated assets:     
Utility generation, transmission and distribution systems5-80 years $74,660
 $71,536
Interstate natural gas pipeline assets3-80 years 7,176
 6,942
   81,836
 78,478
Accumulated depreciation and amortization  (24,478) (23,603)
Regulated assets, net  57,358
 54,875
      
Nonregulated assets:     
Independent power plants5-30 years 6,010
 5,594
Other assets3-30 years 1,489
 1,002
   7,499
 6,596
Accumulated depreciation and amortization  (1,542) (1,060)
Nonregulated assets, net  5,957
 5,536
      
Net operating assets  63,315
 60,411
Construction work-in-progress  2,556
 2,098
Property, plant and equipment, net  $65,871
 $62,509


Construction work-in-progress includes $2.2$3.2 billion and $1.8$3.6 billion as of December 31, 20172020 and 2016,2019, respectively, related to the construction of regulated assets.


During the fourth quarter of 2016, MidAmerican Energy revised its electric and gas depreciation rates based on the results of a new depreciation study, the most significant impact of which was longer estimated useful lives for certain wind-powered generating facilities. The effect of this change was to reduce depreciation and amortization expense by $3 million in 2016 and $34 million annually based on depreciable plant balances at the time of the change.

(5)Jointly Owned Utility Facilities


(5)
Jointly Owned Utility Facilities


Under joint facility ownership agreements, the Domestic Regulated Businesses, as tenants in common, have undivided interests in jointly owned generation, transmission, distribution and pipeline common facilities. The Company accounts for its proportionate share of each facility and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include the Company's share of the expenses of these facilities.



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The amounts shown in the table below represent the Company's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 20172020 (dollars in millions):
AccumulatedConstruction
CompanyFacility InDepreciation andWork-in-
ShareServiceAmortizationProgress
PacifiCorp:
Jim Bridger Nos. 1-467 %$1,485 $714 $15 
Hunter No. 194 486 203 
Hunter No. 260 305 127 
Wyodak80 476 254 
Colstrip Nos. 3 and 410 255 145 
Hermiston50 184 93 
Craig Nos. 1 and 219 368 305 
Hayden No. 125 75 42 
Hayden No. 213 44 25 
Transmission and distribution facilitiesVarious857 263 100 
Total PacifiCorp4,535 2,171 126 
MidAmerican Energy:
Louisa No. 188 %853 483 
Quad Cities Nos. 1 and 2(1)
25 731 437 10 
Walter Scott, Jr. No. 379 939 498 
Walter Scott, Jr. No. 4(2)
60 267 130 
George Neal No. 441 318 179 
Ottumwa No. 152 669 247 
George Neal No. 372 524 262 
Transmission facilitiesVarious261 101 
Total MidAmerican Energy4,562 2,337 32 
NV Energy:
Navajo11 %10 
Valmy50 390 291 
Transmission facilitiesVarious70 31 
On Line Transmission Line25 160 27 
Total NV Energy630 353 
BHE Pipeline Group:
Ellisburg Pool39 %28 10 
Ellisburg Station50 25 
Harrison50 53 16 
Leidy50 133 44 
Oakford50 200 64 
Common FacilitiesVarious277 165 
Total BHE Pipeline Group716 306 11 
Total$10,443 $5,167 $172 
(1)Includes amounts related to nuclear fuel.
(2)Facility in-service and accumulated depreciation and amortization amounts are net of credits applied under Iowa revenue sharing arrangements totaling $509 million and $112 million, respectively.

148
     Accumulated Construction
 Company Facility In Depreciation and Work-in-
 Share Service Amortization Progress
PacifiCorp:       
Jim Bridger Nos. 1-467% $1,442
 $616
 $12
Hunter No. 194
 474
 172
 7
Hunter No. 260
 297
 106
 1
Wyodak80
 469
 216
 1
Colstrip Nos. 3 and 410
 247
 131
 4
Hermiston50
 180
 81
 1
Craig Nos. 1 and 219
 365
 231
 3
Hayden No. 125
 74
 34
 
Hayden No. 213
 43
 21
 
Foote Creek79
 40
 26
 
Transmission and distribution facilitiesVarious 794
 238
 67
Total PacifiCorp  4,425
 1,872
 96
MidAmerican Energy:       
Louisa No. 188% 807
 432
 8
Quad Cities Nos. 1 and 2(1)
25
 698
 387
 20
Walter Scott, Jr. No. 379
 617
 316
 8
Walter Scott, Jr. No. 4(2)
60
 456
 112
 1
George Neal No. 441
 307
 159
 1
Ottumwa No. 152
 567
 206
 40
George Neal No. 372
 425
 183
 7
Transmission facilitiesVarious 249
 87
 1
Total MidAmerican Energy  4,126
 1,882
 86
NV Energy:       
Navajo11% 220
 152
 
Valmy50
 388
 233
 1
Transmission facilitiesVarious 206
 45
 
Total NV Energy  814
 430
 1
BHE Pipeline Group - common facilities
Various 286
 169
 
Total  $9,651
 $4,353
 $183



(1)Includes amounts related to nuclear fuel.
(2)
Facility in-service and accumulated depreciation and amortization amounts are net of credits applied under Iowa revenue sharing arrangements totaling $319 million and $81 million, respectively.

(6)    Leases
(6)
The following table summarizes the Company's leases recorded on the Consolidated Balance Sheet (in millions):
As of
December 31, 2020December 31, 2019
Right-of-use assets:
Operating leases$517 $525 
Finance leases501 504 
Total right-of-use assets$1,018 $1,029 
Lease liabilities:
Operating leases$569 $577 
Finance leases514 519 
Total lease liabilities$1,083 $1,096 

The following table summarizes the Company's lease costs (in millions):
Years Ended
December 31, 2020December 31, 2019
Variable$592 $623 
Operating151 170 
Finance:
Amortization18 16 
Interest40 41 
Short-term20 
Total lease costs$821 $857 
Weighted-average remaining lease term (years):
Operating leases7.47.6
Finance leases27.528.8
Weighted-average discount rate:
Operating leases4.5 %5.2 %
Finance leases8.5 %8.6 %

The following table summarizes the Company's supplemental cash flow information relating to leases (in millions):
Years Ended
December 31, 2020December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$(152)$(153)
Operating cash flows from finance leases(40)(42)
Financing cash flows from finance leases(24)(19)
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases$83 $82 
Finance leases19 14 

149


The Company has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$152 $81 $233 
2022125 74 199 
202393 63 156 
202466 63 129 
202550 62 112 
Thereafter199 673 872 
Total undiscounted lease payments685 1,016 1,701 
Less - amounts representing interest(116)(502)(618)
Lease liabilities$569 $514 $1,083 

(7)Regulatory Matters


Regulatory Assets


Regulatory assets represent costs that are expected to be recovered in future regulated rates. The Company's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Employee benefit plans(1)
15 years$722 $667 
Asset retirement obligations13 years640 445 
Asset disposition costsVarious347 391 
Deferred income taxes(2)
Various283 223 
Demand side management10 years197 
Deferred net power costs1 year139 110 
Deferred operating costs11 years124 134 
OtherVarious988 902 
Total regulatory assets$3,440 $2,881 
Reflected as:
Current assets$283 $115 
Noncurrent assets3,157 2,766 
Total regulatory assets$3,440 $2,881 
 Weighted    
 Average    
 Remaining Life 2017 2016
      
Employee benefit plans(1)
16 years
 $675
 $816
Asset disposition costsVarious 387
 281
Asset retirement obligations13 years
 334
 301
Abandoned projects3 years
 156
 159
Deferred operating costs13 years
 147
 97
Deferred income taxes(2)
Various 143
 1,754
Unrealized loss on regulated derivative contracts4 years
 122
 154
Unamortized contract values6 years
 89
 98
Deferred net power costs2 years
 58
 38
OtherVarious 839
 759
Total regulatory assets  $2,950
 $4,457
      
Reflected as:     
Current assets  $189
 $150
Noncurrent assets  2,761
 4,307
Total regulatory assets  $2,950
 $4,457
(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.

(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.

(2)Amounts primarily represent income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

(2)Amounts primarily represent income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

The Company had regulatory assets not earning a return on investment of $1.1$1.6 billion and $2.8$1.4 billion as of December 31, 20172020 and 2016,2019, respectively.



150


Regulatory Liabilities


Regulatory liabilities represent income to be recognized or amounts to be returned to customers in future periods. The Company's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Deferred income taxes(1)
Various$3,600 $3,611 
Cost of removal(2)
26 years2,435 2,370 
Asset retirement obligations31 years305 241 
Levelized depreciation29 years281 304 
OtherVarious854 785 
Total regulatory liabilities$7,475 $7,311 
Reflected as:
Current liabilities$254 $211 
Noncurrent liabilities7,221 7,100 
Total regulatory liabilities$7,475 $7,311 
 Weighted    
 Average    
 Remaining Life 2017 2016
      
Deferred income taxes(1)
Various $4,143
 $25
Cost of removal(2)
27 years
 2,349
 2,242
Levelized depreciation22 years
 332
 244
Asset retirement obligations35 years
 177
 122
Impact fees6 years
 89
 90
Employee benefit plans(3)
11 years
 69
 25
Deferred net power costs2 years
 8
 64
Unrealized gain on regulated derivative contracts1 year
 3
 6
OtherVarious 341
 302
Total regulatory liabilities  $7,511
 $3,120
      
Reflected as:     
Current liabilities  $202
 $187
Noncurrent liabilities  7,309
 2,933
Total regulatory liabilities  $7,511
 $3,120


(1)(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse. See Note 11 for further discussion of 2017 Tax Reform impacts.
(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing regulated property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.
(3)Represents amounts not yet recognized as a component of net periodic benefit cost that are to be returned to customers in future periods when recognized.

ALP General Tariff Application ("GTA")

In November 2014, ALP filed a GTA requesting the Alberta Utilities Commission ("AUC") to approve revenue requirements of C$811 million for 2015 and C$1.0 billion for 2016, primarily due to continued investment in capital projects as directed by the Alberta Electric System Operator. ALP amended the GTA in June 2015 to propose transmission tariff relief measures for customers and modifications to its capital structure. ALP also amendedwill be included in regulated rates when the temporary differences reverse.
(2)Amounts represent estimated costs, as accrued through depreciation rates and updated the GTAexclusive of ARO liabilities, of removing regulated property, plant and equipment in October 2015, reducing the requested revenue requirements to C$672 million for 2015 and C$704 million for 2016. In May 2016, the AUC issued its decision pertaining to the 2015-2016 GTA. ALP filed its 2015-2016 GTA compliance filing in July 2016 to complyaccordance with the AUC's decision.

The compliance filing requested the AUC to approve revenue requirements of C$599 million for 2015 and C$685 million for 2016. The decreased revenue requirements requested in the compliance filing, as compared to the 2015-2016 GTA filing updated in October 2015, were primarily due to the AUC approval of ALP's proposed immediate tariff relief of C$415 million for customers for 2015 and 2016, through (i) the discontinuance of construction work-in-progress ("CWIP") inaccepted regulatory practices. Amounts are deducted from rate base and the return to allowance for funds used during construction ("AFUDC") accounting effective January 1, 2015, resulting inor otherwise accrue a C$82 million reduction of revenue requirement and the refund of C$277 million previously collected as CWIP in rate base as part of ALP's transmission tariffs during 2011-2014 less related returns of C$12 million and (ii) a change to the flow through method for calculating income taxes for 2016, resulting in further tariff relief of C$68 million.carrying cost.



Operating revenue for the year ended December 31, 2016, included a one-time reduction of $200 million from the 2015-2016 GTA decision received in May 2016 at ALP. The 2015-2016 GTA decision required ALP to refund $200 million to customers in 2016 through reduced monthly billings for the change from receiving cash during construction for the return on CWIP in rate base to recording allowance for borrowed and equity funds used during construction related to construction expenditures during the 2011 to 2014 time period. This amount is offset with higher capitalized interest and allowance for equity funds in the Consolidated Statements of Operations. In addition, the decision required ALP to change to the flow through method of recognizing income tax expense effective January 1, 2016. This change reduced operating revenue by $45 million for the year ended December 31, 2016, with offsetting impacts to income tax expense in the Consolidated Statements of Operations.
151



(7)(8)Investments and Restricted Cash and Cash Equivalents and Investments


Investments and restricted cash and cash equivalents and investments consists of the following as of December 31 (in millions):
20202019
Investments:
BYD Company Limited common stock$5,897 $1,122 
Rabbi trusts440 410 
Other263 187 
Total investments6,600 1,719 
  
Equity method investments:
BHE Renewables tax equity investments5,626 3,130 
Electric Transmission Texas, LLC594 555 
Iroquois Gas Transmission System, L.P.580 
JAX LNG, LLC75 
Bridger Coal Company74 81 
Other118 181 
Total equity method investments7,067 3,947 
Restricted cash and cash equivalents and investments:  
Quad Cities Station nuclear decommissioning trust funds676 599 
Other restricted cash and cash equivalents155 230 
Total restricted cash and cash equivalents and investments831 829 
  
Total investments and restricted cash and cash equivalents and investments$14,498 $6,495 
Reflected as:
Other current assets$178 $240 
Noncurrent assets14,320 6,255 
Total investments and restricted cash and cash equivalents and investments$14,498 $6,495 
 2017 2016
Investments:   
BYD Company Limited common stock$1,961
 $1,185
Rabbi trusts441
 403
Other124
 106
Total investments2,526
 1,694
    
Equity method investments:   
Tax equity investments1,025
 741
Electric Transmission Texas, LLC524
 672
Bridger Coal Company137
 165
Other148
 142
Total equity method investments1,834
 1,720
    
Restricted cash and investments:   
Quad Cities Station nuclear decommissioning trust funds515
 460
Other348
 282
Total restricted cash and investments863
 742
    
Total investments and restricted cash and investments$5,223
 $4,156
    
Reflected as:   
Current assets$351
 $211
Noncurrent assets4,872
 3,945
Total investments and restricted cash and investments$5,223
 $4,156


Investments


BHE's investment in BYD Company Limited common stock is accounted for as an available-for-salea marketable security with changes in fair value recognized in AOCI. Upon adoption of ASU No. 2016-01 effective January 1, 2018, all changes in fair value (whether realized or unrealized) will be recognized as gains or losses in the Consolidated Statements of Operations with a cumulative-effect increase to retained earnings as of the date of adoption totaling $1,085 million. The fair value of BHE's investment in BYD Company Limited common stock reflects a pre-tax unrealized gain of $1,729 million and $953 million as of December 31, 2017 and 2016, respectively.net income.

Rabbi trusts primarily hold corporate-owned life insurance on certain current and former key executives and directors. The Rabbi trusts were established to hold investments used to fund the obligations of various nonqualified executive and director compensation plans and to pay the costs of the trusts. The amount represents the cash surrender value of all of the policies included in the Rabbi trusts, net of amounts borrowed against the cash surrender value.



Gains (losses) on marketable securities, net recognized during the period consists of the following (in millions):
Years Ended December 31,
20202019
Unrealized gains (losses) recognized on marketable securities still held at the reporting date$4,791 $(290)
Net gains recognized on marketable securities sold during the period
Gains (losses) on marketable securities, net$4,797 $(288)

152


AltaLink

AltaLink is regulated by the AUC, pursuant to the Electric Utilities Act (Alberta), the Public Utilities Act (Alberta), the Alberta Utilities Commission Act (Alberta) and the Hydro and Electric Energy Act (Alberta). The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems. The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of AltaLink's activities, including its tariffs, rates, construction, operations and financing.

The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements, capital expenditure prudency and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable, and approval of the transmission tariff rates of regulated transmission providers paid by the AESO, which is the independent transmission system operator in Alberta, Canada that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulation and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.

AltaLink's tariffs are regulated by the AUC under the provisions of the Electric Utilities Act (Alberta) in respect of rates and terms and conditions of service. The Electric Utilities Act (Alberta) and related regulations require the AUC to consider that it is in the public interest to provide consumers the benefit of unconstrained transmission access to competitive generation and the wholesale electricity market. In regulating transmission tariffs, the AUC must facilitate sufficient investment to ensure the timely upgrade, enhancement or expansion of transmission facilities, and foster a stable investment climate and a continued stream of capital investment for the transmission system.

51


Under the Electric Utilities Act (Alberta), AltaLink prepares and files applications with the AUC for approval of tariffs to be paid by the AESO for the use of its transmission facilities, and the terms and conditions governing the use of those facilities. The AUC reviews and approves such tariff applications based on a cost-of-service regulatory model under a forward test year basis. Under this model, the AUC provides AltaLink with a reasonable opportunity to (i) earn a fair return on equity; and (ii) recover its forecast costs, including operating expenses, depreciation, borrowing costs and taxes (including deemed income taxes) associated with its regulated transmission business. The AUC must approve tariffs that are just, reasonable and not unduly preferential, arbitrary or unjustly discriminatory. AltaLink's transmission tariffs are not dependent on the price or volume of electricity transported through its transmission system.

The AESO is an independent system operator in Alberta, Canada that oversees the Alberta Interconnected Electric System ("AIES") and wholesale electricity market. The AESO is responsible for directing the safe, reliable and economic operation of the AIES, including long-term transmission system planning. AltaLink and the other transmission facility owners receive substantially all of their transmission tariff revenues from the AESO. The AESO, in turn, charges wholesale tariffs, approved by the AUC, in a manner that promotes fair and open access to the AIES and facilitates a competitive market for the purchase and sale of electricity. The AESO monitors compliance with approved reliability standards, which are enforced by the Market Surveillance Administrator, which may impose penalties on transmission facility owners for non-compliance with the approved reliability standards.

The AESO determines the need and plans for the expansion and enhancement of the transmission system in Alberta in accordance with applicable law and reliability standards. The AESO's responsibilities include long-term transmission planning and management, including assessing the current and future transmission system capacity needs of market participants. When the AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application to the AUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an application to the AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the geographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that certain transmission projects may be subject to a competitive process open to qualified bidders.

Independent Power Projects

The Yuma, Cordova, Saranac, Power Resources, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Jumbo Road, Marshall, Grande Prairie, Walnut Ridge, Pinyon Pines, Santa Rita, Alamo 6 and Pearl independent power projects are Exempt Wholesale Generators ("EWG") under the Energy Policy Act, while the Community Solar Gardens, Imperial Valley and Wailuku independent power projects are currently certified as Qualifying Facilities ("QF") under the Public Utility Regulatory Policies Act of 1978. Both EWGs and QFs are generally exempt from compliance with extensive federal and state regulations that control the financial structure of an electric generating plant and the prices and terms at which electricity may be sold by the facilities.

The Yuma, Cordova, Saranac, Imperial Valley, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Marshall, Grande Prairie, Walnut Ridge and Pinyon Pines independent power projects have obtained authority from the FERC to sell their power using market-based rates. This authority to sell electricity in wholesale electricity markets at market-based rates is subject to triennial reviews conducted by the FERC. Accordingly, the respective independent power projects are required to submit triennial filings to the FERC that demonstrate a lack of market power over sales of wholesale electricity and electric generation capacity in their respective market areas. The Pinyon Pines, Solar Star, Topaz and Yuma independent power projects and power marketer CalEnergy, LLC file together for market power study purposes of the FERC-defined Southwest Region. The most recent triennial filing for the Southwest Region was made in June 2019 and an order accepting it was issued in March 2020. The Cordova and Saranac independent power projects and power marketer CalEnergy, LLC file together with MidAmerican Energy and certain affiliates for market power study purposes of the FERC-defined Northeast Region. The most recent triennial filing for the Northeast Region was made in June 2020 and is awaiting FERC action. The Bishop Hill II and Walnut Ridge independent power projects and power marketer CalEnergy, LLC file together with MidAmerican Energy and certain affiliates for market power study purposes of the FERC-defined Central Region. The most recent triennial filing for the Central Region was made in December 2020 and is awaiting FERC action. The Marshall and Grande Prairie independent power projects and power marketer CalEnergy, LLC file together for market power study purposes in the FERC-defined Southwest Power Pool Region. The most recent triennial filing for the Southwest Power Pool Region was made in December 2018 and an order accepting it was issued July 2019.


52


The entire output of Jumbo Road, Santa Rita, Alamo 6, Pearl and Power Resources is within the Electric Reliability Council of Texas ("ERCOT") and market-based authority is not required for such sales solely within ERCOT as the ERCOT market is not a FERC-jurisdictional market. Similarly, Wailuku sells its output solely to the Hawaii Electric Light Company within the Hawaii electric grid, which is not a FERC-jurisdictional market and therefore, Wailuku does not require market-based rate authority.

EWGs are permitted to sell capacity and electricity only in the wholesale markets, not to end users. Additionally, utilities are required to purchase electricity produced by QFs at a price that does not exceed the purchasing utility's "avoided cost" and to sell back-up power to the QFs on a non-discriminatory basis, unless they have successfully petitioned the FERC for an exemption from this purchase requirement. Avoided cost is defined generally as the price at which the utility could purchase or produce the same amount of power from sources other than the QF on a long-term basis. The Energy Policy Act eliminated the purchase requirement for utilities with respect to new contracts under certain conditions. New QF contracts are also subject to FERC rate filing requirements, unlike QF contracts entered into prior to the Energy Policy Act. FERC regulations also permit QFs and utilities to negotiate agreements for utility purchases of power at rates other than the utilities' avoided cost.

The Philippine Congress has passed the Electric Power Industry Reform Act of 2001 ("EPIRA"), which is aimed at restructuring the Philippine power industry, privatizing the National Power Corporation ("NPC") and introducing a competitive electricity market, among other initiatives. Under the EPIRA, Power Sector Assets and Liabilities Management Corporation ("PSALM") is tasked, among others, to dispose of and privatize the assets of NPC. PSALM recently issued statements that public bidding of the administration and management of the contracted energy of the Casecnan Project's energy conversion and power purchase agreement to interested parties will be made in 2021. It is still not known what impact, if any, the implementation of this change in independent power producer administrator may have on the Casecnan Project's future operations.

Residential Real Estate Brokerage Company

HomeServices and its operating subsidiaries are regulated by the United States Consumer Financial Protection Bureau which enforces the Truth In Lending Act ("TILA"), the Equal Credit Opportunity Act ("ECOA") and the Real Estate Settlement Procedures Act ("RESPA"); by the United States Federal Trade Commission with respect to certain franchising activities; by the United States Department of Housing and Urban Development, which enforces the Fair Housing Act ("FHA"); and by state agencies where its subsidiaries operate. TILA and ECOA regulate lending practices. FHA prohibits housing-related discrimination on the basis of race, color, national origin, religion, sex, familial status, and disability. RESPA regulates real estate settlement services including real estate closing practices, lender servicing and escrow account practices and business relationships among settlement service providers and third parties to the transaction.

REGULATORY MATTERS

In addition to the discussion contained herein regarding regulatory matters, refer to "General Regulation" in Item 1 of this Form 10-K for further information regarding the general regulatory framework.

PacifiCorp

Multi-State Process

In November 2019, PacifiCorp completed negotiations with the Multi-State Process Workgroup, a working group of stakeholders consisting of utility regulatory agencies, customers, and certain others potentially affected by inter-jurisdictional allocation procedures, resulting in a new cost allocation agreement, the 2020 Protocol. The agreement establishes a common allocation method to be used in Utah, Oregon, Wyoming, Idaho and California through 2023 and a separate method for Washington during the same time period that is based on a system approach for cost allocations and provides a path forward for Washington to achieve compliance with Washington's Clean Energy Transformation Act. The agreement establishes a process for the 2020 Protocol signatories to resolve remaining outstanding cost-allocations to be implemented in a new, permanent and long-term allocation method at the end of the four years. In December 2019, PacifiCorp submitted the 2020 Protocol to the UPSC, the OPUC, the WPSC and the IPUC for approval. WUTC approval of the agreement was sought in the general rate case filing also submitted in December 2019. In 2020, PacifiCorp received approval of the 2020 Protocol from the UPSC, the OPUC, the WPSC, the IPUC and the WUTC. Approval from the CPUC will be requested in a future general rate case.


53


Depreciation Rate Study

In September 2018, PacifiCorp filed applications for depreciation rate changes with the UPSC, the OPUC, the WPSC, the WUTC and the IPUC based on PacifiCorp's 2018 depreciation rate study, requesting the rates become effective January 1, 2021. Based on the proposed depreciation rates, annual depreciation expense would have increased approximately $300 million. Updates since September 2018 include the filing of PacifiCorp's 2020 decommissioning studies in which a third‑party consultant was engaged to estimate decommissioning costs associated with coal-fueled generating facilities and removal of Cholla Unit 4. Depreciation rates based on the outcomes described below were effective January 1, 2021, resulting in an estimated increase in depreciation expense of $176 million in 2021, based on historical balances.

In March 2020, PacifiCorp filed a partial settlement stipulation with the UPSC to which all but one intervening party agreed. The partial settlement adopts certain aspects of the 2018 depreciation rate study as filed for coal-fueled generating facilities and established a secondary phase to the proceeding to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities and equipment replaced as a result of PacifiCorp's wind repowering projects. In April 2020, the UPSC approved the stipulation as filed. In December 2020, the UPSC issued an order regarding the secondary phase which approved PacifiCorp's proposed accounting treatment related to the retired wind assets and supports recovery of incremental decommissioning costs reflected in the third-party study over the remaining depreciable lives of the coal-fueled generating facilities as proposed in the general rate case.

In August 2020, PacifiCorp filed an all‑party stipulation with the OPUC regarding the depreciation study with depreciation rates for coal-fueled generating facilities and associated incremental decommissioning costs reflected in the third-party study to be addressed separately in the general rate case proceeding. In December 2020, the OPUC approved the stipulation effective January 1, 2021. The OPUC's December 2020 general rate case order accepted PacifiCorp's proposed depreciable lives for the coal-fueled generating facilities but deferred a decision on rate treatment of the incremental decommissioning costs.

In April 2020, PacifiCorp filed a stipulation with the WPSC resolving all issues addressed in PacifiCorp's depreciation rate study application with ratemaking treatment of certain matters to be addressed in PacifiCorp's general rate case, including depreciation for coal-fueled generating facilities and associated incremental decommissioning costs reflected in decommissioning studies and certain matters related to the repowering of PacifiCorp's wind-powered generating facilities. The stipulation was approved by the WPSC during a hearing in August 2020 and a subsequent written order in December 2020. The general rate case hearing was rescheduled for February 2021. As a result of the hearing date change, PacifiCorp filed an application in October 2020 with the WPSC requesting authorization to defer costs associated with impacts of the depreciation study. A hearing for this deferral application is scheduled to occur in July 2021.

In July 2020, PacifiCorp filed a full settlement stipulation with the WUTC resolving all issues in the proceeding. The WUTC approved the stipulation in December 2020, excluding aspects related to certain coal-fueled generating facilities that were separately addressed in the general rate case. The general rate case settlement authorizes accelerated depreciation of certain coal-fueled generating facilities, as well as recovery of incremental decommissioning costs reflected in the third-party study over a ten-year period.

In June 2020, PacifiCorp filed a partial settlement stipulation with the IPUC to which all but one intervening party agreed. The partial settlement adopts certain aspects of the 2018 depreciation rate study as filed for coal-fueled generating facilities and proposes a secondary phase to the proceeding be established in order to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities. In August 2020, the IPUC approved the stipulation and authorized a secondary phase to the proceeding to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities.

As a result of delaying the general rate case filing in Idaho for 2021 for an anticipated effective date of January 1, 2022, PacifiCorp reached a separate agreement with parties to defer the incremental depreciation expense from the 2018 depreciation study for one year, during 2021. In October 2020, a settlement stipulation was filed with the IPUC related to the secondary phase of the depreciation study to defer the incremental decommissioning expense from the 2020 decommissioning studies for one year, during 2021, consistent with the stipulated treatment of the incremental depreciation expense from the 2018 depreciation study, as a result of delaying the general rate case filing. The IPUC approved the stipulation as filed in December 2020.


54


Retirement Plan Settlement Charge

During 2018, the PacifiCorp Retirement Plan incurred a settlement charge as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018. In December 2018, PacifiCorp submitted filings with the UPSC, the OPUC, the WPSC and the WUTC seeking approval to defer the settlement charge. Also in December 2018, an advice letter was filed with the CPUC requesting a memorandum account to track the costs associated with pension and postretirement settlements and curtailments. In October 2019, the request for a memorandum account was re-filed as an application with the CPUC. In 2019, the WUTC approved the requested deferral, while the UPSC and the WPSC denied the request. In January 2020, the OPUC issued an order denying PacifiCorp's request. In April 2020, the CPUC approved the request to establish a memorandum account effective December 31, 2018.

In its December 2020 generate rate case order, the UPSC ordered PacifiCorp to initiate a proceeding by March 2021 to establish a balancing account for pension settlement losses. While the OPUC did not authorize specific treatment for pension settlement losses in its December 2020 general rate case order, it did indicate that it is receptive to PacifiCorp filing a deferral request, should a pension settlement loss be triggered in the 2021 test period for the general rate case proceeding.

COVID-19

In March and April 2020, PacifiCorp filed applications requesting authorization to defer costs associated with COVID‑19 with the UPSC, the OPUC, the WPSC, the WUTC and the IPUC. In April 2020, as ordered by the CPUC, PacifiCorp filed to establish the COVID‑19 Pandemic Protections Memorandum Account. The memorandum account was approved in September 2020, retroactive to March 4, 2020. In April 2020, the WPSC approved PacifiCorp's application to defer costs associated with COVID‑19, subject to a public notice period, and required associated benefits arising from COVID‑19 to be offset against the deferred costs. During the public notice period, one party to the proceeding filed a petition for a rehearing of the matter. The WPSC scheduled a hearing for this matter in April 2021. In July, September and October 2020, the IPUC, the UPSC and the OPUC, respectively, approved PacifiCorp's applications to defer costs associated with COVID‑19, requiring associated benefits arising from COVID‑19 to be offset against the deferred costs. In November 2020, PacifiCorp filed a revised petition consistent with the requirements set forth in the WUTC's adopted term sheet in its generic COVID-19 proceeding. In December 2020, the WUTC approved PacifiCorp's revised petition. In February 2021, PacifiCorp filed a motion to withdraw the application from the WPSC, after reaching an agreement with parties to the proceeding.

Utah

In March 2019, PacifiCorp filed its annual EBA application with the UPSC requesting recovery of $24 million, or 1.1%, of deferred net power costs from customers for the period January 1, 2018 through December 31, 2018, reflecting the difference between base and actual net power costs in the 2018 deferral period. The rate change was approved by the UPSC effective May 1, 2019 on an interim basis. Following a decision from the Utah Supreme Court in June 2019 that found the UPSC did not have authority to approve interim rates in conjunction with the EBA, the UPSC directed PacifiCorp to terminate the interim rate change pending final approval in the proceeding. The hearing on final approval was held in February 2020, and the UPSC issued an order approving full recovery of the 2018 deferred costs beginning April 1, 2020.

In May 2019, Utah House Bill 411 went into effect. The legislation, among other things, authorizes the UPSC to approve a renewable energy program for communities seeking 100% renewable electricity. Participating cities were required to adopt a resolution with a goal to be on 100% renewable electricity by 2030 before December 31, 2019. Twenty-four communities in Utah, including Salt Lake City, passed the resolution before December 31, 2019. Customers within a participating community may opt out of the program and maintain existing rates. Rates approved for the program may not result in any shift of costs or benefits to nonparticipating customers. The program details, including costs, are being developed with the communities for a future filing with the UPSC.

In March 2020, PacifiCorp filed its annual EBA application with the UPSC requesting recovery of $37 million, or 1.0%, of deferred power costs from customers for the period January 1, 2019 through December 31, 2019, reflecting the difference between base and actual net power costs in the 2019 deferral period. A hearing was held in February 2021 for rates effective March 1, 2021.


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In March 2020, Utah's governor signed Utah House Bill 66, Wildland Fire Planning and Cost Recovery Amendments, which requires PacifiCorp to prepare a wildfire protection plan to be approved by the UPSC. All investments, including the cost of capital, made to implement an approved plan are recoverable in rates. The bill also provides a potential liability safe harbor if PacifiCorp is in compliance with its approved wildfire mitigation plan. In addition, the legislation clarifies the standard for real property losses and eliminates the current standard of treble damages awarded for tree losses. The first wildland fire protection plan was filed with the UPSC in June 2020 and was approved by the UPSC in October 2020. As part of the 2020 general rate case, the UPSC approved a Wildland Fire Mitigation Balancing Account to track and defer costs associated with the implementation of the wildland fire protection plan that are not recovered through base rates.

In March 2020, Utah's governor signed Utah House Bill 396, Electric Vehicle Charging Infrastructure Amendments, which directs the UPSC to enable PacifiCorp to recover in rates up to $50 million of electric vehicle infrastructure. The legislation also prohibits a third‑party from generating electricity onsite to directly resell to customers through electric vehicle charging infrastructure.

In May 2020, PacifiCorp filed a general rate case with the UPSC requesting an increase in base rates of $96 million, or 4.8%, which PacifiCorp proposed to be implemented over a three-year period with 2.6% effective January 1, 2021, 1.1% effective January 1, 2022 and 1.1% effective January 1, 2023 reflecting the refunding of a portion of 2017 Tax Reform benefits in 2021 and 2022. The proposed increase reflected recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs associated with coal-fueled generating facilities, a wildland fire mitigation cost tracking mechanism to implement Utah House Bill 66, and rate design modernization proposals. The application also requested authorization to recover costs associated with the early retirement of Cholla Unit 4. The proposed increase reflected several rate mitigation measures that included use of the balance in the Utah Sustainable Transportation and Energy Plan ("STEP") regulatory accounts to accelerate depreciation of the undepreciated plant balance of certain coal-fueled generation units, including Cholla Unit 4, and the use of a portion of the excess deferred income taxes associated with 2017 Tax Reform to accelerate recognition of certain regulatory assets and further depreciate the Dave Johnston plant balance. In October 2020, PacifiCorp filed rebuttal testimony, modifying its request to an increase in base rates of $72 million, or 3.6%, primarily due to a reduction to the requested return on equity. In December 2020, the UPSC issued an order approving an increase in base rates of $31 million, or 1.6%, effective January 1, 2021 reflecting a reduction in PacifiCorp's requested return on equity and before considering refunds of remaining 2017 Tax Reform benefits. The UPSC approved PacifiCorp's proposed rate mitigation strategy to refund remaining 2017 Tax Reform benefits over two years, resulting in an overall net decrease of $15 million, or 0.7%, effective January 1, 2021 followed by a 1.1% increase on January 1, 2022 and another 1.1% increase on January 1, 2023. The order accepted PacifiCorp's proposal to use Utah STEP regulatory balances and excess deferred income taxes associated with 2017 Tax Reform to accelerate depreciation of Cholla Unit 4 and portions of other coal-fueled generating plant balances, as well as to accelerate recognition of certain regulatory asset balances. The order also authorized PacifiCorp to establish a deferral account for costs associated with the early retirement of Cholla Unit 4 and a Wildland Fire Mitigation Balancing Account as described under "Adjustment Mechanisms" in Item 1 of this Form 10-K. In addition, the UPSC ordered PacifiCorp to initiate a proceeding by March 2021 to establish a balancing account for pension settlement losses.

Oregon

In December 2018, PacifiCorp filed a 2019 RAC application requesting recovery of costs associated with repowering of approximately 900 MWs of company-owned and installed wind facilities expected to be completed in 2019. The associated net power cost and PTC benefits were previously included in the 2019 TAM. An all-party settlement was approved by the OPUC in September 2019, providing for a total rate increase of $24 million, or 1.8%, subject to final cost updates. The first rate increase of $9 million, or 0.7%, was effective October 1, 2019 for four repowered facilities, the second rate increase of $1 million, or 0.1%, was effective December 1, 2019 for one repowered facility and the third rate increase of $5 million, or 0.4%, was effective January 1, 2020 for two repowered facilities. A final rate increase of $5 million, or 0.4%, was effective April 1, 2020 for the two remaining repowered facilities that were placed in service by the end of March 2020. As part of the settlement, parties agreed that depreciation of the Oregon‑allocated net book value of certain undepreciated equipment replaced as a result of the applicable repowering projects would be accelerated and offset with excess deferred income taxes resulting from 2017 Tax Reform. In 2020, accelerated depreciation of $40 million and offsetting amortization of excess deferred income taxes was recognized associated with the two remaining repowered facilities included in the 2019 RAC. In October 2020, PacifiCorp filed its annual update for plants placed into service in 2019 requesting an overall rate increase of $2 million, or 0.2%, effective November 1, 2020. The rate was in effect through December 31, 2020 when new rates from the general rate case reset the RAC rates to zero.

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In October 2019, the OPUC approved the all-party settlement in the 2020 TAM, effective January 1, 2020. In December 2020, the Cedar Springs II wind facility was placed in service. In compliance with the terms of the settlement adopted by the OPUC, in December 2020, PacifiCorp filed to include the net power costs and PTCs in rates which resulted in a rate decrease of approximately $1 million, or 0.1%, effective December 11, 2020. In December 2020, PacifiCorp also filed an application with the OPUC requesting authorization to defer the revenue requirement associated with the Cedar Springs II wind resource and associated transmission through December 31, 2020, for later inclusion in rates.

In November 2019, PacifiCorp filed a 2020 RAC application requesting an annual increase in rates of $1 million, or 0.1%, associated with repowering the Glenrock III wind facility effective April 1, 2020 and an annual increase in rates of $3 million, or 0.3%, associated with repowering the Dunlap wind facility effective October 15, 2020. As part of its application, PacifiCorp proposed to offset the Oregon-allocated net book value of the replaced wind equipment in this filing with PacifiCorp's OATT revenue related deferral from 2017 through 2019. An all-party settlement was filed in January 2020 supporting the filed request and was approved by the OPUC in March 2020. Based on a final cost update for the Glenrock III wind facility, and including the net power cost and PTC benefits, a 0.02% rate decrease became effective April 1, 2020. In September 2020, PacifiCorp filed for a rate change after the repowered Dunlap wind facility was placed in service. Based on the final cost update for the Dunlap wind facility, and including the net power cost and PTC benefits, an additional rate increase of $2 million, or 0.1%, became effective September 18, 2020. As a result of the settlement, accelerated depreciation of $34 million and offsetting amortization of the OATT deferral was recognized during 2020 associated with undepreciated equipment replaced as a result of the repowering of the Glenrock III and Dunlap wind facilities.

In November 2019, PacifiCorp requested authorization to establish an automatic adjustment clause and rate schedule for the costs and revenues related to the Oregon Corporate Activity Tax ("OCAT") that applies to tax years beginning on or after January 1, 2020. Concurrent with this filing, PacifiCorp also requested authorization to defer the OCAT expense. In January 2020, the OPUC authorized the automatic adjustment clause, rate schedule and application for deferral. PacifiCorp began recovering the estimated OCAT expense effective February 1, 2020. The recovery adjustment for 2020 is 0.41% and the rate is being applied as a percentage surcharge on customers' bills.

In February 2020, PacifiCorp filed a general rate case in Oregon requesting a net rate increase of $71 million, or 5.4%, effective January 1, 2021. The request included a separate tariff rider to recover costs associated with the early retirement of Cholla Unit 4 for an increase of $17 million annually from January 2021 through April 2025 and an annual credit to customers of $25 million for amortization of remaining deferred income tax benefits associated with 2017 Tax Reform over a three-year period beginning January 2021. The request for the increase in base rates reflected recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs and other closure costs associated with coal-fueled facilities and rate design modernization proposals. Net power costs are addressed separately in the Oregon TAM, discussed below. In June 2020, PacifiCorp filed reply testimony requesting a revised net rate increase of $67 million, or 5.0%, effective on January 1, 2021. The revised net rate increase reflected a proposal to offset the costs associated with the early retirement of Cholla Unit 4 with a portion of the deferred income tax benefits associated with 2017 Tax Reform rather than recovering these costs through a separate tariff as proposed in the initial filing. The revised net rate increase also included PacifiCorp's proposal to provide an annual credit to customers of $6 million for amortization of the remaining deferred income tax benefits associated with 2017 Tax Reform over a two-year period beginning January 2021. In August 2020, PacifiCorp filed its surrebuttal testimony requesting a revised net rate increase of $41 million, or 3.1%, effective January 1, 2021. This included a decrease in the requested return on equity, an update to depreciation rates consistent with the settled depreciation study and the proposed annual credit to customers of the remaining deferred income tax benefits associated with 2017 Tax Reform that was modified to $7 million. PacifiCorp also filed a partial stipulation that would settle all rate design and rate spread issues in the general rate case. In PacifiCorp's closing brief filed in October 2020, PacifiCorp modified the requested net rate increase to $40 million, or 3.0%, to accept the OPUC staff's adjustment correcting the ongoing advanced meter infrastructure operating costs reflected in the case. In December 2020, the OPUC approved a net rate decrease of approximately $24 million, or 1.8%, effective January 1, 2021, accepting PacifiCorp's proposed annual credit to customers of the remaining 2017 Tax Reform benefits over a two-year period. The new rates approved by the OPUC reflect a modified capital structure for ratemaking purposes and a lower return on equity than proposed by PacifiCorp. The new rates also exclude approximately $27 million in incremental decommissioning costs and other closure costs associated with coal-fueled generating facilities that will be addressed through a separate process in 2021. The order also authorizes an Annual Wildfire Mitigation and Vegetation Management Cost Recovery Mechanism for three years as described under "Adjustment Mechanisms" in Item 1 of this Form 10-K. PacifiCorp's compliance filing to reset base rates effective January 1, 2021 in response to the OPUC's order reflected a rate decrease of approximately $67 million, or 5.1%, due to the exclusion of the impacts of repowered wind facilities, new wind facilities and certain other new investments that had not been placed in service at the time of the filing. Additional compliance filings will be made to include these investments in rates concurrent when they are placed in service. In January 2021, the OPUC approved the second compliance filing to add the remainder of the Ekola Flats wind facility to rates, resulting in a rate increase of approximately $7 million, or 0.5%, effective January 12, 2021.
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In February 2020, PacifiCorp submitted its annual TAM filing in Oregon requesting a decrease of $49 million, or 3.7%, effective January 1, 2021, based on forecast net power costs and loads for the calendar year 2021. The filing includes the customer benefits of new and repowered wind resources, including an increase in PTCs. In June 2020, PacifiCorp filed reply testimony in its annual TAM with updated forecast net power costs resulting in a rate decrease of $47 million, or 3.6%, effective January 1, 2021. In August 2020, PacifiCorp filed a stipulation with the OPUC settling all issues in the proceeding. In October 2020, the OPUC approved the stipulation. In November 2020, the final cost update was filed resulting in an annual rate decrease of $41 million, or 3.1%, effective January 1, 2021.

Wyoming

In July 2019, Wyoming Senate Enrolled Act No. 74 ("SEA 74") went into effect. The legislation, among other things, requires electric utilities to make a good faith effort to sell a coal-fueled generation facility in Wyoming before it can receive recovery in rates for capital costs associated with new generation facilities built, in whole or in part, to replace the retiring coal-fueled generation facility. The electric utility is obligated to purchase the electricity from the facility through a power purchase agreement at a price that is no greater than the utility's avoided cost as determined by the WPSC. Costs associated with an approved power purchase agreement are expected to be recoverable in rates from Wyoming customers. In March 2020, the Wyoming governor signed Senate Enrolled Act No. 23, which allows a 1 MW or greater customer to purchase electricity from a coal-fueled generation facility purchased from an electric utility under SEA 74. The WPSC approved new administrative rules to implement the legislation in November 2020, which are expected to go into effect in early 2021. The overall impacts of the legislation and the new administrative rules cannot be determined at this time.

In March 2020, PacifiCorp filed a general rate case with the WPSC requesting an increase in base rates of $7 million, or 1.1%, effective January 1, 2021. The increase reflects recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs associated with coal-fueled facilities and rate design modernization proposals. The application also requests a revision to the ECAM to eliminate the sharing band and requests authorization to discontinue operations and recover costs associated with the early retirement of Cholla Unit 4. The proposed increase reflects several rate mitigation measures that include use of the remaining 2017 Tax Reform benefits to buy down plant balances, including Cholla Unit 4, and spreading the recovery of the depreciation of certain coal-fueled generation units over time periods that extend beyond the depreciable lives proposed in the depreciation rate study. In September 2020, PacifiCorp filed its rebuttal testimony that modified its requested increase in base rates from $7 million to $9 million and reflected an update to the rate mitigation measures for using the 2017 Tax Reform benefits. The WPSC determined that the rebuttal testimony filed constituted a material and substantial change to the original application and vacated the hearing that was scheduled for October 2020. The WPSC re-noticed PacifiCorp's case and rescheduled the hearings. The hearings began February 2021 and will resume March 2021. PacifiCorp has requested a rate effective date of July 1, 2021.

In March 2020, the Wyoming governor signed House of Representatives Enrolled Act No. 79, which requires the WPSC to adopt a standard to specify a percentage of an electric utility's electricity to be generated from coal‑fueled generation utilizing carbon capture technology by no later than 2030. The bill allows electric utilities to implement a surcharge not to exceed 2% of customer bills to recover costs to comply with the standard. PacifiCorp is working with the WPSC and other stakeholders on rules to implement the legislation. The overall impacts of this legislation cannot be determined at this time.

In April 2020, PacifiCorp filed its annual ECAM and RRA application with the WPSC requesting recovery of $7 million, or 1.0% of deferred net power costs from customers for the period January 1, 2019 through December 31, 2019, reflecting the difference between base and actual net power costs in the 2019 deferral period. The rate change went into effect on an interim basis June 15, 2020. This increase will be offset in part by continued rate credits associated with 2017 Tax Reform benefits and bonus depreciation for which minor adjustments are proposed to go into effect in the same timeframe. The hearing was held and the WPSC issued a bench decision in December 2020, reducing the requested recovery by $1 million.

Washington

In November 2019, PacifiCorp submitted its 2019 decoupling filing with the WUTC for the twelve months ended June 30, 2019. In January 2020, the WUTC approved PacifiCorp's 2019 decoupling filing, which resulted in a $12 million surcredit to customers effective February 1, 2020.
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In December 2019, PacifiCorp submitted its 2021 Washington general rate case requesting an overall decrease to rates of $4 million, or 1.1%, effective January 1, 2021. The case includes a proposed ten-year annual surcredit of $7 million to customers primarily associated with the amortization of excess deferred income taxes from 2017 Tax Reform. The case also includes a request for approval of a new cost allocation methodology, updated depreciation rates, incremental decommissioning costs and other closure costs associated with certain coal-fueled facilities, recovery of Energy Vision 2020 investments, and rate design modernization proposals. In April 2020, PacifiCorp submitted supplemental testimony and exhibits to incorporate the impacts of the recently completed decommissioning studies for PacifiCorp's coal-fueled generating resources and updated net power costs. The updates resulted in a revised request for an overall increase to rates of $11 million, or 3.2%. The parties subsequently reached a settlement in principle. In July 2020, the resulting all-party settlement was filed reflecting a rate decrease of $4 million or 1.2%. The settlement adjusts the current $8 million annual surcredit associated with 2017 Tax Reform that was set to expire January 1, 2021 to a five-year annual surcredit of $12 million, primarily associated with the amortization of excess deferred income taxes from 2017 Tax Reform. The settlement also includes approval of the new cost allocation methodology, updated depreciation rates, incremental decommissioning costs and other closure costs associated with certain coal-fueled facilities and rate design modernization proposals. While recovery of the Energy Vision 2020 investments is reflected in the settlement, revenue associated with those investments placed into service after May 1, 2020 will be subject to a prudency review in a separate filing in 2021 to address the cost recovery. In October 2020, PacifiCorp filed a petition for rehearing and motion to amend the settlement stipulation to reflect an increase to net power costs. In the settlement, parties had agreed to offset any increase to net power costs in the October update with the power cost adjustment mechanism deferral account balance. The October update resulted in an increase greater than the balance in the deferral account. To maintain the intent of the settlement to update net power costs and decrease rates for customers, PacifiCorp and the parties to the settlement reached an agreement to reflect this difference in the deferral account for future ratemaking. In November 2020, PacifiCorp and parties filed joint testimony supporting the amended settlement. The settlement was approved by the WUTC in December 2020.

In December 2020, PacifiCorp submitted its 2020 decoupling filing with the WUTC for the twelve months ended June 30, 2020. In January 2021, the WUTC approved PacifiCorp's 2020 decoupling filing, which resulted in a $3 million surcharge to customers over two years effective February 1, 2021.

Idaho

In April 2020, PacifiCorp filed its annual ECAM application with the IPUC requesting recovery of $21 million, or 3.0%, for deferred costs in 2019. This filing includes recovery of the difference in actual net power costs to the base level in rates, an adder for recovery of the Lake Side 2 resource, changes in PTCs, RECs, and a resource tracking mechanism to match costs with the benefits of wind repowering projects until they are reflected in base rates. This deferral is partially offset by $3 million related to amortization of excess deferred income taxes stemming from 2017 Tax Reform and net of recovery for a regulatory asset related to the prior depreciation study. In May 2020, the IPUC issued an order approving the application as filed with rates effective June 1, 2020.

In March 2020, PacifiCorp filed a notice of intent to file a general rate case with the IPUC. However, in June 2020, PacifiCorp negotiated a settlement with parties that allowed PacifiCorp to avoid filing a general rate case in 2020. The parties will support PacifiCorp's proposal to defer the incremental depreciation expense from the 2018 depreciation study during 2021, request deferred accounting treatment for unrecovered investment and closure costs when Cholla Unit 4 is retired, use a portion of the deferred income tax benefits associated with 2017 Tax Reform to accelerate the depreciation of Cholla Unit 4 and offset future rate increases, and include the Pryor Mountain wind facility and the repowering of the Foote Creek I wind facility in the resource tracking mechanism. In return, PacifiCorp will delay filing a general rate case until 2021 with rates effective January 1, 2022. In July 2020, PacifiCorp filed a settlement stipulation allowing the delay of the general rate case and the related application for an accounting order. In December 2020, the IPUC issued an order approving the application and associated stipulation as filed.

California

In April 2018, PacifiCorp filed a general rate case with the CPUC for an overall rate increase of $1 million, or 0.9%, effective January 1, 2019. A CPUC decision was issued in February 2020, resulting in a $6 million, or 5.1%, rate decrease effective February 6, 2020. The CPUC's final order also resulted in an additional rate decrease of $6 million, or 5.1%, over the next three years due to the amortization of excess deferred income taxes attributed to 2017 Tax Reform.

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California Senate Bill 901 requires electric utilities to prepare and submit wildfire mitigation plans that describe the utilities' plans to prevent, combat and respond to wildfires affecting their service territories. In January 2020, the CPUC approved the resolution establishing procedural rules for the review and disposition of 2020 Wildfire Mitigation Plans. PacifiCorp submitted its 2020 Wildfire Mitigation Plan in February 2020 for which it received approval in June 2020.

In December 2019, PacifiCorp filed an application notifying the CPUC of the early retirement of the Cholla Unit 4 generating facility and requesting authorization to establish a memorandum account associated with the retirement and decommissioning of Cholla Unit 4. The memorandum account would be used to track costs associated with the unrecovered plant balance, decommissioning and other closure-related costs until PacifiCorp requests recovery in its next general rate case or other proceeding. In July 2020, the CPUC issued a decision approving the requested memorandum account with an effective date of December 27, 2019.

In August 2020, PacifiCorp filed an application with the CPUC to address California energy costs and GHG Allowance costs. The application includes a $7 million, or 6.7% decrease in energy costs, which is largely attributed to PTCs for new and repowered Energy Vision 2020 resources, and an increase of $1 million, or 0.8%, to recover costs for purchasing GHG allowances as required by the state's Cap-and-Trade Program. If this application is approved, this would result in an overall decrease of $6 million, or 5.9% effective January 1, 2021.

MidAmerican Energy

COVID-19

In May 2020, the IUB issued an order authorizing MidAmerican Energy to use a regulatory asset account to record and track increased costs and other financial impacts associated with COVID-19. As of December 31, 2020, MidAmerican Energy has $2 million in a regulatory asset for certain uncollectible customer accounts. At such time as MidAmerican Energy deems appropriate, it may initiate a proceeding with the IUB to seek recovery of such costs and other financial impacts. MidAmerican Energy cannot predict at this time the amount of such financial impacts from COVID-19 or when it will seek recovery of such costs with the IUB.

Iowa Transmission Legislation

In June 2020, Iowa enacted legislation that grants incumbent electric transmission owners the right to construct, own and maintain electric transmission lines that have been approved for construction in a federally registered planning authority's transmission plan and that connect to the incumbent electric transmission owner's facility. Also known as the Right of First Refusal, the law ensures MidAmerican Energy, as an incumbent electric transmission owner, has the legal right to construct, own and maintain transmission lines that have been approved by the MISO (or another federally registered planning authority) in MidAmerican Energy's service territory. To exercise the legal right, MidAmerican Energy must notify the IUB within 90 days of any such approval for construction that it intends to construct, own and maintain the electric transmission line. The law still requires an incumbent electric transmission owner to obtain a state franchise from the IUB to construct, erect, maintain or operate an electric transmission line and, upon issuance of a franchise, the incumbent electric transmission owner provide the IUB an estimate of the cost to construct the electric transmission line and, until the construction is complete, a quarterly report updating the estimated cost to construct the electric transmission line. Legal challenges have been brought against similar laws in other states, but courts that have ruled on such cases have upheld the states' laws. In October 2020, a lawsuit challenging the law was filed in Iowa by national transmission interests. The suit raises issues specific to Iowa law, and the State of Iowa is defending the law in the suit.

Renewable Subscription Program

In December 2020, MidAmerican Energy filed with the IUB a proposed Renewable Subscription Program tariff. If approved, the program will provide qualified industrial customers with the opportunity to meet their future energy growth above baseline levels with renewable energy from specific MidAmerican Energy wind-powered generation additions and 100 MWs of planned solar generation for 20 years at fixed prices based on the cost of such facilities. Under the program, MidAmerican Energy would own the facilities, retain PTCs and other tax benefits associated with the facilities and include all revenues and costs from the program in its Iowa-jurisdictional results of operation, but renewable attributes from the project would be specifically assigned to subscribing customers. Approval by the IUB is pending.
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    NV Energy (Nevada Power and Sierra Pacific)

Regulatory Rate Reviews

In June 2019, Sierra Pacific filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue increase of $5 million but requested an annual revenue reduction of $5 million. In September 2019, Sierra Pacific filed an all-party settlement for the electric regulatory rate review. The settlement resolves all cost of capital and revenue requirement issues and provides for an annual revenue reduction of $5 million and requires Sierra Pacific to share 50% of regulatory earnings above 9.7% with its customers. The rate design portion of the regulatory rate review was not a part of the settlement and a hearing on rate design was held in November 2019. In December 2019, the PUCN issued an order approving the stipulation but made some adjustments to the methodology for the weather normalization component of historical sales in rates, which resulted in an additional annual revenue reduction of $3 million. The new rates were effective January 1, 2020. In January 2020, Sierra Pacific filed a petition for rehearing challenging the PUCN's adjustments to the weather normalization methodology. In February 2020, the PUCN issued an order granting the petition for rehearing. In April 2020, the PUCN issued a final order approving a weather normalization methodology that changed the additional annual revenue reduction from $3 million to $2 million with an effective date of January 1, 2020. Customers billed under rates using the initial revenue reduction were issued credits in the fourth quarter of 2020.

In June 2020, Nevada Power filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue reduction of $96 million but requested an annual revenue reduction of $120 million. In September 2020, Nevada Power filed an all-party settlement for the electric regulatory rate review. The settlement resolved all but one issue and provided for an annual revenue reduction of $93 million and required Nevada Power to issue a $120 million one-time bill credit, composed primarily of existing regulatory liabilities, to customers beginning in October 2020. The continuation of the earning sharing mechanism was the one issue that was not addressed in the settlement. In October 2020, the PUCN held a hearing on the continuation of the earning sharing mechanism and issued an interim order accepting the settlement and requiring the one-time bill credit be issued to customers. The $120 million one-time bill credit was issued to customers in the fourth quarter of 2020. In December 2020, the PUCN issued a final order directing Nevada Power to continue the earning sharing mechanism subject to any modifications made to the earning sharing mechanism pursuant to an alternative rate-making ruling and to use the weather normalization methodology adopted for Sierra Pacific in its 2019 regulatory rate review. The new rates were effective on January 1, 2021.

In June 2020, Sierra Pacific filed a petition with the PUCN, which was later changed to an application, to adjudicate and establish the cost recovery mechanism for the One Nevada Transmission Line ("ON Line") addressing the reallocated portion of the ON Line revenue requirement. This filing was made concurrent with the Nevada Power regulatory rate review application, which addresses the ON Line reallocated revenue requirement related to Nevada Power. In December 2020, the PUCN issued a final order deferring the ON Line reallocated revenue and regulatory amortization until Sierra Pacific's next regulatory rate review.
        2017 Tax Reform

In February 2018, the Nevada Utilities made filings with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by the Nevada Utilities. The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing the Nevada Utilities to record the amortization of any excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 1, 2018. Subsequently, the Nevada Utilities filed a petition for reconsideration relating to the amortization of protected excess accumulated deferred income tax balances resulting from the 2017 Tax Reform. In November 2018, the PUCN issued an order granting reconsideration and reaffirming the September 2018 order. In December 2018, the Nevada Utilities filed a petition for judicial review with the district court. The district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, the Nevada Utilities filed a notice of appeal to the Nevada Supreme Court of the district court's order. The Nevada Utilities have agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review settlement. In December 2020, the PUCN issued a final order accepting the settlement. In January 2021, the Nevada Utilities filed their withdrawal and the matter was dismissed by the court.


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Price Stability Tariff

In November 2018, the Nevada Utilities made filings with the PUCN to implement the Customer Price Stability Tariff ("CPST"). The Nevada Utilities have designed the CPST to provide certain customers, namely those eligible to file an application pursuant to Chapter 704B of the Nevada Revised Statutes, with a market-based pricing option for renewable resources. The CPST provides for an energy rate that would replace the BTER and deferred energy accounting adjustment. The goal is to have an energy rate that yields an all-in effective rate that is competitive with market options available to such customers. In February 2019, the PUCN granted several intervenors the ability to participate in the proceeding. In June 2019, the Nevada Utilities withdrew their filings. In May 2020, the Nevada Utilities refiled the CPST incorporating the considerations raised by the PUCN and other intervenors and a hearing was held in September 2020. In November 2020, the PUCN issued an order approving the tariff with modified pricing and directing the Nevada Utilities to develop a methodology by which all eligible participants may have the opportunity to participate in the CPST program up to a limit with the same proportion of governmental entities' and non-governmental entities' MWh reserved for potentially interested customers as filed. In December 2020, the Nevada Utilities filed a petition for reconsideration of the pricing ordered by the PUCN.

Natural Disaster Protection Plan

The Nevada Utilities submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, intervening parties filed petitions for reconsideration. The Bureau of Consumer Protection filed a petition for judicial review with the district court in November 2020.In December 2020, the PUCN issued a second modified final order approving the natural disaster protection plan, as modified, and reopened its investigation and rulemaking on SB 329 to address rate design issues raised by intervenors. The comment period for the reopened investigation and rulemaking ended in early February 2021 and the matter is ongoing.
COVID-19

In March 2020, the PUCN issued an emergency order for the Nevada Utilities to establish regulatory asset accounts related to the costs of maintaining service to customers affected by COVID-19 whose services would have been terminated or disconnected under normally-applicable terms of service. The Nevada Utilities may incur significant costs as a result of COVID-19, including, but not limited to, higher credit loss expenses resulting from a higher than average level of write-offs of uncollectible accounts associated with the suspension of disconnections and late payment fees to assist customers facing unprecedented economic pressures. The Nevada Utilities also expect to incur additional costs that cannot currently be predicted given the unprecedented nature of COVID-19.

Northern Powergrid Distribution Companies

GEMA, through the Ofgem, published its final determinations for the next set of price controls for transmission and gas distribution networks in Great Britain in December 2020. These determinations do not apply to Northern Powergrid but aspects of the proposals are capable of application to Northern Powergrid's next price control, ("ED2"), which will begin in April 2023.

Regarding allowed return on capital, Ofgem determined a cost of equity of 4.55% (plus inflation calculated using the United Kingdom's consumer prices index including owner occupiers' housing costs, CPIH). When placed on a comparable footing, by adjusting for differences in the assumed equity ratio and the measure of inflation used, the determination for transmission and gas distribution is approximately 200 basis points lower than the current cost of equity for electricity distribution.

In December 2020, in respect of electricity distribution, GEMA published its decision on the methodology it will use to set the ED2 price control and prices from April 2023 to March 2028. This confirmed that Ofgem will apply many aspects of the proposals from the transmission and gas distribution price controls to electricity distribution. It did not cover financial aspects, including the allowed return on capital, which will be covered by a separate decision in Q1 2021, with confirmation not expected until final determinations in late 2022.


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BHE Pipeline Group

BHE GT&S

During 2018, BHE GT&S filed informational filings on FERC Form No. 501-G for EGTS and Carolina Gas. FERC terminated those proceedings without additional action. Also in 2018, BHE GT&S requested a waiver from filing the FERC Form No. 501-G filing requirement for Cove Point. The waiver request was granted.

In January 2020, pursuant to the terms of a previous settlement, Cove Point filed a general rate case for its FERC-jurisdictional services, with proposed rates to be effective March 1, 2020. Cove Point proposed an annual cost-of-service of approximately $182 million. In February 2020, the FERC approved suspending the changes in rates for five months following the proposed effective date, until August 1, 2020, subject to refund. In November 2020, Cove Point reached an agreement in principle with the active participants in the general rate case proceeding. Under the terms of the agreement in principle, Cove Point's rates effective August 1, 2020 result in an increase to annual revenues of approximately $4 million and a decrease in annual depreciation expense of approximately $1 million, compared to the rates in effect prior to August 1, 2020. The interim settlement rates were implemented November 1, 2020, and Cove Point's provision for rate refunds for August 2020 through October 2020 totaled $7 million. The agreement in principle was reflected in a stipulation and agreement filed with the FERC in January 2021, which is subject to final approval by the FERC.

        Northern Natural Gas

In October 2018, Northern Natural Gas filed an informational filing on FERC Form No. 501-G and a Statement Demonstrating Why No Rate Adjustment is Necessary. In January 2019, FERC initiated a Section 5 investigation to determine whether the rates currently charged by Northern Natural Gas are just and reasonable. As required by the FERC Section 5 order, Northern Natural Gas filed a cost and revenue study in April 2019. In July 2019, Northern Natural Gas filed a Section 4 rate case requesting increases in its transportation and storage rates. In January 2020, the FERC approved Northern Natural Gas' filing to implement its interim rates subject to refund, effective January 1, 2020. In June 2020, a settlement agreement was filed with the FERC, resolving the Section 5 investigation and Section 4 rate case and providing for increased service rates and depreciation rates. Market Area transportation reservation rates increased 28.5% and storage reservation rates increased 67.0% from the rates that were in effect in 2019. Depreciation rates are 2.3% for onshore transmission plant, 2.95% for LNG storage plant, 13.0% for intangible plant, and 2.75% for general plant. The settlement also provides for a Section 4 and Section 5 rate action moratorium through June 30, 2022, subject to certain exceptions, as well as provides for minimum annual maintenance capital spending. The settlement rates were implemented May 1, 2020, and the Company's provision for rate refunds for January 2020 through April 2020 totaled $69 million. The FERC approved the settlement in September 2020, and rate refunds to customers were processed in early October 2020.
        Kern River

In October 2018, Kern River filed an informational filing on FERC Form No. 501-G and a Statement Explaining Why No Rate Adjustment is Necessary, along with a Tax Reform Credit Rate Settlement in a companion docket. Kern River's Tax Reform Credit Rate Settlement offered an 11% rate credit against the Maximum Base Tariff Rates for firm service and any one-part rate that includes fixed costs which would result in an expected annual rate credit of $13 million. In November 2018, FERC approved Kern River's Tax Reform Credit effective November 15, 2018.
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    BHE Transmission

AltaLink

Rate Relief Application

In January 2021, driven by the pandemic and economic shutdown that has negatively impacted all Albertans, AltaLink filed an application with the AUC that requested approval of tariff relief measures totaling C$350 million over the three-year period, 2021 to 2023. The tariff relief measures consist of a proposed refund to customers of C$150 million of previously collected future income taxes and C$200 million of surplus accumulated depreciation. The future income tax refund will be evenly distributed over the two-year period, 2021 to 2022, with C$75 million included in each year. The accumulated depreciation surplus will be refunded over the three-year period, 2021 to 2023, with C$60 million included in 2021 and 2022, and C$80 million in 2023. If approved by the AUC, these tariff relief measures will save customers an estimated C$317 million over the three-year period, 2021 to 2023.

General Tariff Application

In August 2018, AltaLink filed its 2019-2021 GTA with the AUC, delivering on the first three years of its commitment to keep rates lower or flat at the approved 2018 revenue requirement of C$904 million for customers for the next five years. In addition, AltaLink proposed to provide a further tariff reduction over the three year period by refunding previously collected accumulated depreciation surplus of an additional C$31 million. In April 2019, AltaLink filed an update to its 2019-2021 GTA primarily to reflect its 2018 actual results and the impact of the AUC's decision on AltaLink's 2014-2015 Deferral Accounts Reconciliation Application. The application requested the approval of revised revenue requirements of C$879 million, C$882 million and C$885 million for 2019, 2020 and 2021, respectively.

In July 2019, AltaLink filed a 2019-2021 partial negotiated settlement application with the AUC. The application consisted of negotiated reductions that resulted in a net decrease of C$38 million to the three year total revenue requirement applied for in AltaLink's 2019-2021 GTA updated in April 2019. However, this was offset by AltaLink's request for an additional C$20 million of forecast transmission line clearance capital as part of an excluded matter. The 2019-2021 negotiated settlement agreement excluded certain matters related to the new salvage study and salvage recovery approach, additional capital spending and incremental asset retirements. AltaLink's salvage proposal is estimated to save customers C$267 million between 2019 and 2023. Excluded matters were examined by the AUC in a hearing held in November 2019, with written arguments filed in January 2020.

In October 2019, AltaLink filed a letter with the AUC to request the continuation of the monthly interim refundable transmission tariff effective January 1, 2020, until a final tariff is approved. In October 2019, the AUC confirmed the interim refundable transmission tariff at C$74 million per month, until otherwise directed by the AUC.

In April 2020, the AUC issued its decision with respect to AltaLink's 2019-2021 GTA. The AUC approved the negotiated settlement agreement as filed and rendered its decision and directions on the excluded matters. The AUC declined to approve AltaLink's proposed salvage methodology at that time, but indicated it would initiate a generic proceeding to review the matter on an industry-wide basis. The AUC approved, on a placeholder basis, C$13 million of the additional C$20 million AltaLink requested for forecast transmission line clearance capital. The remaining C$7 million of capital investment was reviewed in AltaLink's subsequent compliance filing. Also, C$3 million of forecast operating expenses and C$4 million of forecast capital expenditures related to fire risk mitigation were approved, with an additional C$31 million of capital expenditures reviewed in the compliance filing. Finally, the AUC approved C$6 million of retirements for towers and fixtures.

In July 2020, the AUC approved AltaLink's compliance filing establishing revised revenue requirements of C$895 million for 2019, C$894 million for 2020 and C$898 million for 2021, exclusive of the assets transferred to the PiikaniLink Limited Partnership and the KainaiLink Limited Partnership. The AUC also approved a revised monthly tariff of C$71 million for September 2020 to December 2020 and a monthly tariff of C$74 million for 2021. The 2021 revenue requirement is based on 8.5% return on equity and 37% deemed equity set by the AUC as placeholders.


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The AUC deferred its decision on AltaLink's proposed salvage methodology included in AltaLink's 2019-2021 GTA, pending a generic proceeding to consider the broader implications. This generic proceeding was closed and in July 2020, AltaLink filed an application with the AUC for the review and variance of the AUC's decision with respect to AltaLink's proposed salvage methodology. In September 2020, the AUC granted this review on the basis that there were changed circumstances that could lead the AUC to materially vary or rescind the majority hearing panel's findings on AltaLink's proposed salvage methodology. In October 2020, AltaLink filed responses to information requests from the AUC, written argument was filed by intervening parties and written reply argument was filed by AltaLink. In November 2020, the AUC issued its decision on AltaLink's review and variance application. The AUC decided to vary the original decision and approve AltaLink's proposed net salvage method and the revised transmission tariffs as filed, effective December 2020. The new salvage methodology will decrease the amount of salvage pre-collection resulting in reductions to AltaLink's revenue requirement from customers by C$24 million, C$27 million and C$31 million for the years 2019, 2020 and 2021, respectively. AltaLink delivered on the first three years of its commitment to customers to keep rates flat for five years by obtaining the necessary AUC approvals. AltaLink's approved 2019-2021 GTA maintains customer rates below the 2018 level of C$904 million from 2019 to 2021.

2022 Generic Cost of Capital Proceeding

In December 2020, the AUC initiated the 2022 generic cost of capital proceeding. This proceeding will consider the return on equity and deemed equity ratios for 2022 and one or more additional test years. Due to the existing uncertainty as a result of the ongoing COVID-19 pandemic, before establishing a process schedule, the commission has requested participants to submit comments that address the following: (i) the continuation of the currently approved return on equity and deemed equity ratios for a further period of time; (ii) the appropriate test period for the proceeding; (iii) the scope of the proceeding, including whether a formula-based approach to return on equity should be utilized; (iv) the considerations to take into account when establishing the process for the proceeding; and (v) the avoidance of duplicative evidence and greater coordination and collaboration between parties.

In January 2021, AltaLink submitted a letter to the AUC stating that due to ongoing capital market volatility and other COVID-19 related uncertainties there are reasonable grounds for extending the currently approved 2021 return on equity and deemed equity ratio on a final basis for 2022. AltaLink further stated there is insufficient time to complete a full generic cost of capital proceeding in 2021, in order to issue a decision prior to the beginning of 2022 and a formula-based approach should not be considered at this time. AltaLink suggested that a proceeding could be restarted in the third quarter of 2021, for 2023 and subsequent years.

2021 Generic Cost of Capital Proceeding

In December 2018, the AUC initiated the 2021 GCOC proceeding to consider returning to a formula-based approach in determining the return on equity for a given year, starting with 2021. In April 2019, after receiving comments from interested parties, the AUC expanded the scope of the proceeding to include a traditional non-formulaic GCOC inquiry as well as the consideration of returning to a formula-based approach.

In January 2020, AltaLink filed company and expert evidence, recommending a range of 8.75% to 10.5% return on equity, on a recommended equity ratio of 40% for 2021 and 2022. The Consumers' Coalition of Alberta, the Utilities Consumer Advocate and the City of Calgary filed intervenor evidence recommending a range of 5.0% to 6.9% return on equity and an AltaLink common equity ratio of 35% to 37% for 2021 and 2022.

In March 2020, as a result of COVID-19, the AUC suspended the proceeding for an indefinite period. This decision was subject to review and reassessment by the AUC every 30 to 60 days. In May 2020, the AUC proposed a method to determine fair cost of capital parameters for 2021 given the circumstances presented by the COVID-19 pandemic. The AUC outlined four options for utilities and interested parties to consider and subsequently added a fifth option that set the 2021 return on equity at 8.3% as a balance between certainty and economic conditions.

In July 2020, AltaLink requested that the AUC continue to hold the proceeding in abeyance and revisit the issue in another 30 to 60 days. AltaLink also requested that if the AUC determined the proceeding should resume, the AUC should set a date for the filing of evidence by all parties in the first quarter of 2021 and that the proceeding should address return on equity for 2021 and 2022 only.

In August 2020, the AUC issued a letter indicating that it had decided not to resume the GCOC proceeding at that time and would continue to assess when, and under what conditions, the proceeding could resume.

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In October 2020, the AUC issued its decision and set the final approved return on equity and deemed equity ratio for AltaLink by extending the current approved 8.5% and 37%, respectively, for the duration of 2021.

2014-2015 Deferral Accounts Reconciliation Application

In December 2018 and January 2019, the AUC issued decisions approving C$3,833 million out of the C$4,017 million capital project additions included in the application. Project costs of C$155 million were deferred to a future hearing. The AUC disallowed capital additions of approximately C$29 million including applicable AFUDC, pending receipt of additional supporting documentation for certain items.

AltaLink filed compliance filings in February and September 2019 reflecting the AUC's directives, and AUC approval was received in November 2019. However, the AUC had previously ruled that it would put in placeholder amounts for the approved costs of the assets in the 2014-2015 Deferral Accounts Reconciliation Application proceeding until the AUC-initiated proceeding to consider the issue of transmission asset utilization.

In January 2021, the AUC approved the placeholder amounts as final, noting that the transmission asset utilization proceeding was not initiated and the AUC has no immediate plans to do so.

2016-2018 Deferral Accounts Reconciliation Application

In July 2019, AltaLink filed its 2016-2018 Deferral Accounts Reconciliation Application with the AUC. The application included 116 projects with total gross capital additions, including AFUDC, of C$976 million. In December 2019, the AUC announced a series of technical meetings to address AltaLink's responses to certain information requests.

In March 2020, the AUC issued a letter indicating that it would provide further process steps after AltaLink submitted its remaining responses to information requests and the Consumers' Coalition of Alberta filed its intervener evidence. In May 2020, AltaLink provided additional responses to information requests as directed by the AUC. In accordance with the AUC's revised process schedule, the Consumers' Coalition of Alberta filed its intervener evidence in June 2020, and AltaLink subsequently filed information requests on the intervener evidence in June 2020 and filed its rebuttal evidence in July 2020.

In August 2020, the AUC determined that a hearing was not required and issued a proceeding schedule to provide for argument, reply argument and the close of record by September 2020. In September 2020, AltaLink and interveners filed written argument and reply argument.

In December 2020, the AUC issued its decision approving C$941 million out of the C$947 million capital project additions included in the application. The AUC disallowed capital additions of approximately C$6 million. As part of this proceeding, the AUC also approved the following: AltaLink's deferral accounts for taxes other than income taxes, long-term debt, and annual structure payments; placeholder treatment for project trailing costs associated with two ongoing disputes; and canceled project costs incurred in 2017 and 2018. AltaLink filed compliance filings in January 2021 reflecting the AUC's directives.

2019 Deferral Accounts Reconciliation Application

In October 2020, AltaLink filed its application with the AUC, which includes ten projects with total gross capital additions of C$129 million, including applicable AFUDC. In December 2020, AltaLink provided responses to AUC information requests, interveners filed written arguments and AltaLink filed reply arguments.


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Alberta Electric System Operator Tariff Decision

In September 2019, the AUC issued its decision with respect to the 2018 AESO tariff. As part of this decision, the AUC approved AltaLink's proposal to refund contributions made by distribution facility owners relative to transmission projects built and owned by transmission facility owners. The proposal would benefit distribution customers by flowing through the lower cost of capital of the transmission facility owner rather than the higher cost of capital of the distribution facility owner. As directed by the AUC, AltaLink would pay FortisAlberta the unamortized contribution balance of approximately C$375 million as of December 2017 and add the amount to AltaLink's rate base if the decision was upheld. The AUC directed the AESO to consult with AltaLink to provide a joint proposal to implement AltaLink's contribution proposal effective in January 2018. In September 2019, FortisAlberta filed a review and variance application with the AUC requesting the AUC re-evaluate its findings with respect to AltaLink's customer contribution proposal relative to distribution facility owners. In October 2019, the AUC granted FortisAlberta's request to proceed to a review and variance with the record closed in November 2019 after submissions from FortisAlberta, AltaLink, and other interested parties. FortisAlberta also filed for permission to appeal the decision with the Court of Appeal, which would not be heard until after the AUC's review proceeding.

In December 2019, the AUC reopened the record of the review and variance proceeding and, in January 2020, issued specific information requests to FortisAlberta and AltaLink to clarify the evidence previously filed. AltaLink and FortisAlberta filed responses to the AUC information requests in January 2020. In February 2020, FortisAlberta filed a motion with the AUC requesting the appointment of a review panel to convene an oral hearing.

In March 2020, as a result of COVID-19, the AUC advised that it would be immediately deferring all public hearings, consultations or information sessions until further notice and requested FortisAlberta to advise the AUC whether it wished to amend its motion. In April 2020, FortisAlberta filed its response requesting an oral hearing, to commence in 105 days.

In May 2020, the AUC denied FortisAlberta's request for an oral hearing but requested expert tax evidence on three areas of disagreement between AltaLink and FortisAlberta. AltaLink and FortisAlberta filed expert evidence in July 2020. The AUC set a further process of information requests and responses and written submissions, which were scheduled to be completed in September 2020.

In September 2020, AltaLink and FortisAlberta filed a written argument and a reply argument. In November 2020, the AUC issued its decision with respect to FortisAlberta's review and variance proceeding. In its decision, the AUC rescinded its earlier findings from the original September 2019 decision which (i) directed FortisAlberta to transfer the unamortized contribution balance of approximately C$375 million to AltaLink and (ii) ruled the new contribution policy proposed by AltaLink be applied. The AUC's decision was based on two main areas: (i) if the original decision was confirmed, FortisAlberta would incur incremental income tax, carrying costs and debt restructuring costs of at least C$117 million that would be required to be recovered from ratepayers and (ii) the AUC determined that a majority of the approximately C$40 million in savings to ratepayers, which the hearing panel relied on as the basis for their original decision, could be achieved by directing FortisAlberta to adjust the applicable amortization rate for its AESO contributions to match the service lives of the transmission assets.

In November 2020, the AUC initiated a separate proceeding to (i) examine the legal basis of the current AESO customer contribution policy as it pertains to all transmission facility owners and distribution facility owners, (ii) consider whether there is a need for a new policy, including consideration of AltaLink's proposed policy and (iii) if approved, set the date on which any new policy would commence.

In December 2020, AltaLink filed its submissions in this proceeding, stating that the current customer contribution policy is contrary to business principles as it allows a distribution facility owner to earn a return on assets that are owned, operated and maintained by a transmission facility owner who has all the risk of ownership and is also contrary to the legislative scheme in Alberta, which delineates the ownership of transmission and distribution assets. AltaLink also stated it disagrees with the AUC's decision and it intends to file an appeal.

In December 2020, AltaLink filed its application for permission to appeal the AUC's review and variance decision with the Court of Appeal. The permission to appeal application is scheduled to be heard in May 2021.
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BHE U.S. Transmission

A significant portion of ETT's revenues are based on interim rate changes that can be filed twice annually and are subject to review and possible true-up in the next filed base regulatory rate review scheduled for no later than February 1, 2023. In January 2021, the Public Utilities Commission of Texas ("PUCT") approved ETT's request to suspend a base regulatory rate review filing scheduled for February 2021. Results of a base regulatory rate review would be prospective except for any deemed disallowance by the PUCT of the transmission investment since the initial base regulatory rate review in 2007. In June 2018, the PUCT approved ETT's application to reduce its transmission revenue by $28 million to reflect the lower federal income tax rate due to 2017 Tax Reform with the amortization of excess accumulated deferred federal income taxes expected to be addressed in the next base rate case.

ENVIRONMENTAL LAWS AND REGULATIONS

Each Registrant is subject to federal, state, local and foreign laws and regulations regarding climate change, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact each Registrant's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. Each Registrant believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. The Company has cumulative investments in wind, solar, geothermal and biomass generating facilities of approximately $34 billion and plans to spend an additional $3 billion on the construction of wind-powered generating facilities, repowering certain existing wind-powered generating facilities and funding of wind tax equity investments through 2021. Refer to "Liquidity and Capital Resources" of each respective Registrant in Item 7 of this Form 10-K for discussion of each Registrant's renewable generation-related capital expenditures.

Climate Change

In December 2015, an international agreement was negotiated by 195 nations to create a universal framework for coordinated action on climate change in what is referred to as the Paris Agreement. The Paris Agreement reaffirms the goal of limiting global temperature increase well below 2 degrees Celsius, while urging efforts to limit the increase to 1.5 degrees Celsius; establishes commitments by all parties to make nationally determined contributions and pursue domestic measures aimed at achieving the commitments; commits all countries to submit emissions inventories and report regularly on their emissions and progress made in implementing and achieving their nationally determined commitments; and commits all countries to submit new commitments every five years, with the expectation that the commitments will get more aggressive. In the context of the Paris Agreement, the United States agreed to reduce GHG emissions 26% to 28% by 2025 from 2005 levels. After more than 55 countries representing more than 55% of global GHG emissions submitted their ratification documents, the Paris Agreement became effective November 4, 2016. On June 1, 2017, President Trump announced the United States would begin the process of withdrawing from the Paris Agreement. The United States completed its withdrawal from the Paris Agreement on November 4, 2020. President Biden accepted the terms of the climate agreement January 20, 2021, and the United States completed its reentry February 19, 2021.

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GHG Performance Standards

Under the Clean Air Act, the EPA may establish emissions standards that reflect the degree of emissions reductions achievable through the best technology that has been demonstrated, taking into consideration the cost of achieving those reductions and any non-air quality health and environmental impact and energy requirements. On August 3, 2015, the EPA issued final new source performance standards, establishing a standard of 1,000 pounds of carbon dioxide per MWh for large natural gas-fueled generating facilities and 1,400 pounds of carbon dioxide per MWh for new coal-fueled generating facilities with the "Best System of Emission Reduction" reflecting highly efficient supercritical pulverized coal facilities with partial carbon capture and sequestration or integrated gasification combined-cycle units that are co-fired with natural gas or pre-combustion slipstream capture of carbon dioxide. The new source performance standards were appealed to the D.C. Circuit and oral argument was scheduled for April 17, 2017. However, oral argument was deferred and the court held the case in abeyance for an indefinite period of time. On December 6, 2018, the EPA announced revisions to new source performance standards for new and reconstructed coal-fueled units. EPA proposes to revise carbon dioxide emission limits for new coal-fueled facilities to 1,900 pounds per MWh for small units and 2,000 pounds per MWh for large units. The EPA would define the best system of emission reduction for new and modified units as the most efficient demonstrated steam cycle, combined with best operating practices. On January 12, 2021, EPA finalized a rule focused solely on a significant contribution finding for purposes of regulating source categories' GHG emissions. The final rule sets no specific regulatory standards and contains no regulatory text, nor does it address what constitutes the best system of emission reduction for new, modified and reconstructed electric generating units. EPA confirms in the "significant contribution" rule that electric generating units remain a listed source category under Clean Air Act Section 111(b), reaching that conclusion through the introduction of an emissions threshold framework by which a source category is deemed to contribute significantly to dangerous air pollution due to their GHG emissions if the amount of those emissions exceeds 3% of total GHG emissions in the United States. Under this methodology, no other source category would qualify for regulation. The significant contribution rule will take effect 60 days after publication in the Federal Register but is expected to be quickly revisited by the Biden administration. Because the significant contribution rule did not alter the emission limits or technology requirements of the 2015 rule, any new fossil-fueled generating facilities will be required to meet the GHG new source performance standards.
Affordable Clean Energy Rule

In June 2014, the EPA released proposed regulations to address GHG emissions from existing fossil-fueled generating facilities, referred to as the Clean Power Plan, under Section 111(d) of the Clean Air Act. The EPA's proposal calculated state-specific emission rate targets to be achieved based on the "Best System of Emission Reduction." In August 2015, the final Clean Power Plan was released, which established the Best System of Emission Reduction as including: (a) heat rate improvements; (b) increased utilization of existing combined-cycle natural gas-fueled generating facilities; and (c) increased deployment of new and incremental non-carbon generation placed in-service after 2012. The Clean Power Plan was stayed by the United States Supreme Court in February 2016 while litigation proceeded. On October 10, 2017, the EPA issued a proposal to repeal the Clean Power Plan, which was intended to achieve an overall reduction in carbon dioxide emissions from existing fossil-fueled electric generating units of 32% below 2005 levels. On June 19, 2019, the EPA repealed the Clean Power Plan and issued the Affordable Clean Energy rule, which fully replaced the Clean Power Plan. In the Affordable Clean Energy rule, the EPA determined that the best system of emissions reduction for existing coal-fueled power plants is limited to actions that can be taken at a point source facility, specifically heat rate improvements and identified a set of candidate technologies and measures that could improve heat rates. Measures taken to meet the standards of performance must be achieved at the source itself. States have until July 2022 to submit compliance plans to the EPA. The Affordable Clean Energy rule was challenged by environmental and health groups in the D.C. Circuit. On January 19, 2021, the D.C. Circuit vacated and remanded the Affordable Clean Energy rule to the EPA, finding that the rule "rested critically on a mistaken reading of the Clean Air Act" that limited the best system of emission reduction to actions taken at a facility. Until the EPA indicates its course of action in response to this decision, the full impacts on the Registrants cannot be determined. PacifiCorp, MidAmerican Energy, Nevada Power and Sierra Pacific have historically pursued cost-effective projects, including plant efficiency improvements, increased diversification of their generating fleets to include deployment of renewable and lower carbon generating resources, and advanced customer energy efficiency programs.

New Source Performance Standards for Methane Emissions

In August 2020, the EPA finalized regulations to rescind standards for methane emissions from the oil and gas sector. The changes eliminate requirements to regulate methane emissions from the production, processing, transmission and storage of oil and gas. The rule was immediately challenged by environmental and tribal groups, as well as numerous states. In January 2021, the D.C. Circuit lifted an administrative stay and allowed the rule to take effect, finding that groups challenging the rule had not met the standard for a long-term stay. Until such time as litigation is exhausted, the relevant Registrants cannot determine whether additional action may be required.
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Regional and State Activities

Several states have promulgated or otherwise participate in state-specific or regional laws or initiatives to report or mitigate GHG emissions. These are expected to impact the relevant Registrant, and include:

In June 2013, Nevada Senate Bill 123 ("SB 123") was signed into law. Among other things, SB 123 and regulations thereunder required Nevada Power to file with the PUCN an emission reduction and capacity replacement plan by May 1, 2014. In May 2014, Nevada Power filed its emissions reduction capacity replacement plan. The plan provided for the retirement or elimination of 300 MWs of coal-fueled generating capacity by December 31, 2014, another 250 MWs of coal-fueled generating capacity by December 31, 2017, and another 250 MWs of coal generating capacity by December 31, 2019, along with replacement of such capacity with a mixture of constructed, acquired or contracted renewable and non-technology specific generating units. The plan also sets forth the expected timeline and costs associated with decommissioning coal-fueled generating units that will be retired or eliminated pursuant to the plan. The PUCN has the authority to approve or modify the emission reduction and capacity replacement plan filed by Nevada Power. The PUCN may approve variations to Nevada Power's resource plans relative to requirements under SB 123. Refer to Nevada Power's Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the ERCR Plan.

Under the authority of California's Global Warming Solutions Act, which includes a series of policies aimed at returning California GHG emissions to 1990 levels by 2020, the California Air Resources Board adopted a GHG cap-and-trade program with an effective date of January 1, 2012; compliance obligations were imposed on entities beginning in 2013. PacifiCorp is subject to the cap-and-trade program as a retail service provider in California and an importer of wholesale energy into California. In 2015, Governor Jerry Brown issued an executive order to reduce emissions to 40% below 1990 levels by 2030 and 80% by 2050. In September 2016, California Senate Bill 32 was signed into law establishing GHG emissions reduction targets of 40% below 1990 levels by 2030.

The states of California, Washington and Oregon have adopted GHG emissions performance standards for base load electricity generating resources. Under the laws in California and Oregon, the emissions performance standards provide that emissions must not exceed 1,100 pounds of carbon dioxide per MWh. In September 2018, the Washington Department of Commerce amended the emissions performance standards to provide that GHG emissions for base load electricity generating resources must not exceed 925 pounds of carbon dioxide per MWh. These GHG emissions performance standards generally prohibit electric utilities from entering into long-term financial commitments (e.g., new ownership investments, upgrades, or new or renewed contracts with a term of five or more years) unless any base load generation supplied under long-term financial commitments comply with the GHG emissions performance standards.

In September 2016, the Washington State Department of Ecology issued a final rule regulating GHG emissions from sources in Washington. The rule regulates GHG including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride beginning in 2017 with three-year compliance periods thereafter (i.e., 2017-2019, 2020-2022, etc.). Under the rule, the Washington State Department of Ecology established GHG emissions reduction pathways for all covered entities. Covered entities may use emission reduction units, which may be traded with other covered entities, to meet their compliance requirements. PacifiCorp's resources that are covered under the rule include the Chehalis generating facility, which is a natural gas combined-cycle plant located in Washington state. PacifiCorp received its baseline emission order on December 17, 2017, which specified the emission reduction requirements for the Chehalis generating facility every three years beginning in 2017. The reduction requirements average 1.7% per year. However, the Washington State Department of Ecology suspended the compliance obligations of the Clean Air Rule after a Thurston County Superior Court judge ruled the state lacks authority to mandate reductions from indirect emitters. On January 16, 2020, the Washington Supreme Court affirmed that the rule limits the applicability of emission standards to actual emitters and cannot be expanded to non-emitters. The court also found that the rule itself is severable, so that the Washington State Department of Ecology may continue to enforce the rule as it applies to emitters. The case was remanded for further proceedings. Pending further action by the lower court, the rule itself remains suspended, but entities subject to the rule are required to continue reporting emissions.

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The Regional Greenhouse Gas Initiative, a mandatory, market-based effort to cap and reduce power sector GHG emissions in eleven Eastern states, required, beginning in 2009, the reduction of carbon dioxide emissions from the power sector of 10% by 2018. Following a program review in 2012, the nine Regional Greenhouse Gas Initiative states implemented a new 2014 cap which was approximately 45% lower than the 2012-2013 cap. The cap is reduced each year by 2.5% from 2015 to 2020. In December 2017, an updated model rule was released by the Regional Greenhouse Gas Initiative states which includes an additional 30% regional cap reduction between 2020 and 2030.

Renewable Portfolio Standards

Each state's RPS described below could significantly impact the relevant Registrant's consolidated financial results. Resources that meet the qualifying electricity requirements under each RPS vary from state to state. Each state's RPS requires some form of compliance reporting and the relevant Registrant can be subject to penalties in the event of noncompliance. Each Registrant believes it is in material compliance with all applicable RPS laws and regulations.

In 1983, Iowa became the first state in the United States to adopt a RPS requiring the state utilities to own or to contract for a combined total of 105 MWs of renewable generating capacity and associated energy production. The IUB allocated the 105-MW requirement between the two utilities in Iowa based on each utility's percentage of their combined estimated Iowa retail peak demand in 1990 resulting in MidAmerican Energy being allocated a RPS requirement of 55.2 MWs. The utility must meet its RPS obligation by either owning renewable energy production facilities located in Iowa or entering into long-term contracts to purchase or wheel electricity from renewable production facilities located in the utility's service area.

Since 1997, NV Energy has been required to comply with a RPS. In November 2020, Nevada voters approved a constitution amendment that requires the state to get at least half its electricity from renewable sources by 2030. Beginning in 2022, the state must get 22% of its electricity from renewable sources. That percentage is increased incrementally over eight years up to the 50% threshold by 2030. The state's previous RPS required utilities to get 25% of their electricity from renewable sources by 2025.

Utah's Energy Resource and Carbon Emission Reduction Initiative provides that, beginning in the year 2025, 20% of adjusted retail electric sales of all Utah utilities be supplied by renewable energy, if it is cost effective. Retail electric sales will be adjusted by deducting the amount of generation from sources that produce zero or reduced carbon emissions, and for sales avoided as a result of energy efficiency and DSM programs. Qualifying renewable energy sources can be located anywhere within the WECC, and RECs can be used.

The Oregon Renewable Energy Act ("OREA") provides a comprehensive renewable energy policy and RPS for Oregon. Subject to certain exemptions and cost limitations established in the law, PacifiCorp and other qualifying electric utilities must meet minimum qualifying electricity requirements for electricity sold to retail customers of at least 5% in 2011 through 2014, 15% in 2015 through 2019, and 20% in 2020 through 2024. In March 2016, Oregon Senate Bill 1547-B ("SB 1547-B"), the Clean Electricity and Coal Transition Plan, was signed into law. SB 1547-B requires coal-fueled resources be eliminated from Oregon's allocation of electricity by January 1, 2030 and increases the current RPS target from 25% in 2025 to 50% by 2040. SB 1547-B also implements new REC banking provisions, as well as the following interim RPS targets: 27% in 2025 through 2029, 35% in 2030 through 2034, 45% in 2035 through 2039, and 50% by 2040 and subsequent years. As required by the OREA, the OPUC has approved an automatic adjustment clause to allow an electric utility, including PacifiCorp, to recover prudently incurred costs of its investments in renewable energy generating facilities and associated transmission costs.

Washington's Energy Independence Act establishes a renewable energy target for qualifying electric utilities, including PacifiCorp. The requirements are 3% of retail sales by January 1, 2012 through 2015, 9% of retail sales by January 1, 2016 through 2019 and 15% of retail sales by January 1, 2020 and each year thereafter. In April 2013, Washington State Senate Bill 5400 ("SB 5400") was signed into law. SB 5400 expands the geographic area in which eligible renewable resources may be located to beyond the Pacific Northwest, allowing renewable resources located in all states served by PacifiCorp to qualify. SB 5400 also provides PacifiCorp with additional flexibility and options to meet Washington's renewable mandates. In May 2019, the state of Washington enacted Senate Bill 5116, the Clean Energy Transformation Act. The legislation, among other things, requires Washington utilities to be carbon neutral by January 1, 2030 and institutes a planning target of 100% non-emitting generation by 2045. Electric utilities must also eliminate from rates coal-fueled resources by December 31, 2025.

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The California RPS required all California retail sellers to procure an average of 20% of retail load from renewable resources by December 31, 2013, 25% by December 31, 2016 and 33% by December 31, 2020. In October 2015, California Senate Bill No. 350 became law and increased the RPS target to 50% by December 31, 2030. The state's RPS was further expanded in September 2018, when California Senate Bill 100 ("SB 100"), the 100 Percent Clean Energy Act of 2018 was signed into law. In addition to requiring retail sellers to meet a RPS target of 60% by 2030, SB 100 enabled a longer-term planning target for 100% of total California retail sales to come from eligible renewable energy resources and zero-carbon resources by December 31, 2045. In December 2011, the CPUC adopted a decision confirming that multi-jurisdictional utilities, such as PacifiCorp, are not subject to the percentage limits within the three product content categories of RPS-eligible resources established by the legislation that have been imposed on other California retail sellers.

Clean Air Act Regulations

The Clean Air Act is a federal law administered by the EPA that provides a framework for protecting and improving the nation's air quality and controlling sources of air emissions. The implementation of new standards is generally outlined in SIPs, which are a collection of regulations, programs and policies to be followed. SIPs vary by state and are subject to public hearings and EPA approval. Some states may adopt additional or more stringent requirements than those implemented by the EPA. The major Clean Air Act programs most directly affecting the Registrants' operations are described below.

National Ambient Air Quality Standards

Under the authority of the Clean Air Act, the EPA sets minimum NAAQS for six principal pollutants, consisting of carbon monoxide, lead, NOx, particulate matter, ozone and SO2, considered harmful to public health and the environment. Areas that achieve the standards, as determined by ambient air quality monitoring, are characterized as being in attainment, while those that fail to meet the standards are designated as being nonattainment areas. Generally, sources of emissions in a nonattainment area that are determined to contribute to the nonattainment are required to reduce emissions. Currently, with the exceptions described in the following paragraphs, air quality monitoring data indicates that all counties where the relevant Registrant's major emission sources are located are in attainment of the current NAAQS.

On June 4, 2018, EPA published final designations for much of the United States. Relevant to the Registrants, these designations include classifying Yuma County, Arizona; Clark County, Nevada; and the Northern Wasatch Front, Southern Wasatch Front and Duchesne and Uintah counties in Utah as nonattainment-marginal with the 2015 ozone standard. These areas will be required to meet the 2015 standard three years from the August 3, 2018, effective date. All other areas relevant to the Registrants were designated attainment/unclassifiable with this same action. On January 29, 2021, the D.C. Circuit vacated several provisions of the 2018 implementing rules for the 2015 ozone standards for contravening the Clean Air Act. Until the EPA takes final action consistent with this ruling, impacts to the relevant Registrants cannot be determined.

In January 2010, the EPA finalized a one-hour air quality standard for nitrogen dioxide at 100 parts per billion. In February 2012, the EPA published final designations indicating that based on air quality monitoring data, all areas of the country are designated as "unclassifiable/attainment" for the 2010 nitrogen dioxide NAAQS. On April 6, 2018, EPA issued a decision to retain the 2010 nitrogen dioxide NAAQS without revision.

In June 2010, the EPA finalized a new NAAQS for SO2. Under the 2010 rule, areas must meet a one-hour standard of 75 parts per billion utilizing a three-year average. The rule utilizes source modeling in addition to the installation of ambient monitors where SO2 emissions impact populated areas. Attainment designations were due by June 2012; however, citing a lack of sufficient information to make the designations, the EPA did not issue its final designations until July 2013 and determined, at that date, that a portion of Muscatine County, Iowa was in nonattainment for the one-hour SO2 standard. MidAmerican Energy's Louisa coal-fueled generating facility is located just outside of Muscatine County, south of the violating monitor. In its final designation, the EPA indicated that it was not yet prepared to conclude that the emissions from the Louisa coal-fueled generating facility contribute to the monitored violation or to other possible violations, and that in a subsequent round of designations, the EPA will make decisions for areas and sources outside Muscatine County. MidAmerican Energy does not believe a subsequent nonattainment designation will have a material impact on the Louisa coal-fueled generating facility. Although the EPA's July 2013 designations did not impact PacifiCorp's nor the Nevada Utilities' generating facilities, the EPA's assessment of SO2 area designations will continue with the deployment of additional SO2 monitoring networks across the country. On February 25, 2019, EPA issued a decision to retain the 2010 SO2 NAAQS without revision.

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The Sierra Club filed a lawsuit against the EPA in August 2013 with respect to the one-hour SO2 standards and its failure to make certain attainment designations in a timely manner. In March 2015, the United States District Court for the Northern District of California ("Northern District of California") accepted as an enforceable order an agreement between the EPA and Sierra Club to resolve litigation concerning the deadline for completing the designations. The Northern District of California's order directed the EPA to complete designations in three phases: the first phase by July 2, 2016; the second phase by December 31, 2017; and the final phase by December 31, 2020. The first phase of the designations require the EPA to designate two groups of areas: 1) areas that have newly monitored violations of the 2010 SO2 standard; and 2) areas that contain any stationary source that, according to the EPA's data, either emitted more than 16,000 tons of SO2 in 2012 or emitted more than 2,600 tons of SO2 and had an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012 and, as of March 2, 2015, had not been announced for retirement. MidAmerican Energy's George Neal Unit 4 and the Ottumwa Generating Station (in which MidAmerican Energy has a majority ownership interest, but does not operate), are included as units subject to the first phase of the designations, having emitted more than 2,600 tons of SO2 and having an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012. States may submit to the EPA updated recommendations and supporting information for the EPA to consider in making its determinations. Iowa submitted documentation to the EPA in April 2016 supporting its recommendation that Des Moines, Wapello and Woodbury Counties be designated as being in attainment of the standard. In July 2016, the EPA's final designations were published in the Federal Register indicating portions of Muscatine County, Iowa were in nonattainment with the 2010 SO2 standard, Woodbury County, Iowa was unclassifiable, and Des Moines and Wapello Counties were unclassifiable/attainment.

In December 2012, the EPA finalized more stringent fine particulate matter NAAQS, reducing the annual standard from 15 micrograms per cubic meter to 12 micrograms per cubic meter and retaining the 24-hour standard at 35 micrograms per cubic meter. The EPA did not set a separate secondary visibility standard, choosing to rely on the existing secondary 24-hour standard to protect against visibility impairment. In December 2014, the EPA issued final area designations for the 2012 fine particulate matter standard. Based on these designations, the areas in which the relevant Registrant operates generating facilities have been classified as "unclassifiable/attainment." Unless additional monitoring suggests otherwise, the relevant Registrant does not anticipate that any impacts of the revised standard will be significant. In December 2020, the EPA finalized its decision to retain, without revision, the existing primary and secondary standards for particulate matter. In June 2020, the EPA proposed a determination of attainment for the 2006 24-hour fine particulate matter for Salt Lake City and Provo serious nonattainment areas. The determination is based upon quality-assured, quality controlled and certified ambient air monitoring data showing that the area has attained the 2006 standard based on the 2017-2019 monitoring. The comment period for the proposal ended in August 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.

In December 2014, the Utah SIP for fine particulate matter was adopted by the Utah Air Quality Board. PacifiCorp's Lake Side, Lake Side 2, Gadsby Steam and Gadsby Peakers generating facilities operate within nonattainment areas for fine particulate matter; however, the SIP did not impose significant new requirements on PacifiCorp's impacted generating facilities, nor did the EPA's comments on the Utah SIP identify requirements for PacifiCorp's existing generating facilities that would have a material impact on its consolidated financial results.

Mercury and Air Toxics Standards

In March 2011, the EPA proposed a rule that requires coal-fueled generating facilities to reduce mercury emissions and other hazardous air pollutants through the establishment of "Maximum Achievable Control Technology" standards. The final MATS became effective on April 16, 2012 and required that new and existing coal-fueled generating facilities achieve emission standards for mercury, acid gases and other non-mercury hazardous air pollutants. Existing sources were required to comply with the new standards by April 16, 2015 with the potential for individual sources to obtain an extension of up to one additional year, at the discretion of the Title V permitting authority, to complete installation of controls or for transmission system reliability reasons. The relevant Registrants have completed emission reduction projects to comply with the final rule's standards for acid gases and non-mercury metallic hazardous air pollutants.

MidAmerican Energy retired certain coal-fueled generating units as the least-cost alternative to comply with the MATS. Walter Scott, Jr. Energy Center Units 1 and 2 were retired in 2015, and George Neal Energy Center Units 1 and 2 were retired in April 2016. A fifth unit, Riverside Generating Station, was limited to natural gas combustion in March 2015.


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Numerous lawsuits have been filed in the D.C. Circuit challenging the MATS. In April 2014, the D.C. Circuit upheld the MATS requirements. In November 2014, the United States Supreme Court agreed to hear the MATS appeal on the limited issue of whether the EPA unreasonably refused to consider costs in determining whether it is appropriate to regulate hazardous air pollutants emitted by electric utilities. Oral argument in the case was held before the United States Supreme Court in March 2015, and a decision was issued by the United States Supreme Court in June 2015, which reversed and remanded the MATS rule to the D.C. Circuit for further action. The United States Supreme Court held that the EPA had acted unreasonably when it deemed cost irrelevant to the decision to regulate generating facilities, and that cost, including costs of compliance, must be considered before deciding whether regulation is necessary and appropriate. The United States Supreme Court's decision did not vacate or stay implementation of the MATS rule. In December 2015, the D.C. Circuit issued an order remanding the rule to the EPA, without vacating the rule. As a result, the relevant Registrants continue to have a legal obligation under the MATS rule and the respective permits issued by the states in which each respective Registrant operates to comply with the MATS rule, including operating all emissions controls or otherwise complying with the MATS requirements.

In December 2018, the EPA issued a proposed revised supplemental cost finding for the MATS, as well as the required risk and technology review under Clean Air Act Section 112. The EPA proposed to determine that it is not appropriate and necessary to regulate hazardous air pollutant emissions from power plants under Section 112; however, the EPA proposed to retain the emission standards and other requirements of the MATS rule, because the EPA did not propose to remove coal- and oil-fueled power plants from the list of sources regulated under Section 112. In May 2020, the EPA published its decision to repeal the appropriate and necessary findings in the MATS rule and retain the overall emission standards. The rule took effect in July 2020. A number of petitions for review were filed in the D.C. Circuit by parties challenging and supporting the EPA's decision to rescind the appropriate and necessary finding. Until litigation over the rule is exhausted, the relevant Registrants cannot fully determine the impacts of the changes to the MATS rule.

In March 2020, the D.C. Circuit issued an opinion in Chesapeake Climate Action Network v. EPA regarding consolidated challenges to the EPA's startup and shutdown provisions contained in the 2012 MATS rule. The MATS rule's provisions governing startup and shutdown require electric generating units comply with work practice standards as opposed to numerical limits during these periods. The EPA denied petitions for reconsideration of these provisions in 2016 and environmentalists challenged this denial. The D.C. Circuit vacated the reconsideration denials, remanding the petition to the EPA for further action. The court did not make a determination on the merits of the arguments concerning the EPA's legal authority to set work practice standards. The existing work practice standards and the alternate definition for when startup ends continue to be applicable. Until the EPA finalizes action to respond to the court's order, the relevant Registrants cannot fully determine the impacts of the remand.

Cross-State Air Pollution Rule

The EPA promulgated an initial rule in March 2005 to reduce emissions of NOx and SO2, precursors of ozone and particulate matter, from down-wind sources in the eastern United States, including Iowa, to reduce emissions by implementing a plan based on a market-based cap-and-trade system, emissions reductions, or both. After numerous appeals, the CSAPR was promulgated to address interstate transport of SO2 and NOx emissions in 27 eastern and Midwestern states.

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The first phase of the rule was implemented January 1, 2015. In November 2015, the EPA released a proposed rule that would further reduce NOx emissions in 2017. The final "CSAPR Update Rule" was published in the Federal Register in October 2016 and required additional reductions in NOx emissions beginning in May 2017. On December 6, 2018, EPA finalized a rule to close out the CSAPR, having determined that the CSAPR Update for the 2008 ozone NAAQS fully addressed Clean Air Act interstate transport obligations of 20 eastern states. EPA determined that 2023 is an appropriate future analytic year to evaluate remaining good neighbor obligations and that there will be no remaining nonattainment or maintenance receptors with respect to the 2008 ozone NAAQS in the eastern United States in that year. Accordingly, the 20 CSAPR Update-affected states would not contribute significantly to nonattainment in, or interfere with maintenance of, any other state with regard to the 2008 ozone NAAQS. Both the CSAPR Update and the CSAPR Close-Out rules were challenged in the D.C. Circuit Court. The D.C. Circuit ruled September 13, 2019, that because the EPA allowed upwind States to continue to significantly contribute to downwind air quality problems beyond statutory deadlines, the CSAPR Update Rule provided only a partial remedy that did not fully address interstate ozone transport, and remanded the CSAPR Update Rule back to the EPA. The D.C. Circuit Court issued an opinion October 1, 2019, finding that because the CSAPR Close-Out Rule relied on the same faulty reasoning as the CSAPR Update rule, the CSAPR Close-Out Rule must be vacated. On October 15, 2020, the EPA proposed to tighten caps on emissions of NOx from power plants in 12 states in the CSAPR trading program in response to the D.C. Circuit's decision to vacate the CSAPR Update rule. The rule is intended to fully resolve 21 upwind states' remaining good neighbor obligations under the 2008 ozone NAAQS. Additional emissions reductions are required at power plants in 12 states, including Illinois; the EPA predicts that emissions from the remaining nine states, including Iowa and Texas, will not significantly contribute to downwind states' ability to attain or maintain the ozone standard. The EPA accepted comment on the proposal through December 15, 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.

The CSAPR provisions are not anticipated to have a material impact on the Registrants. MidAmerican Energy operates natural gas-fueled generating facilities in Iowa and BHE Renewables operates natural gas-fueled generating facilities in Texas, Illinois and New York, which are subject to the CSAPR. MidAmerican Energy has installed emissions controls at its coal-fueled generating facilities to comply with the CSAPR and may purchase emissions allowances to meet a portion of its compliance obligations. The cost of these allowances is subject to market conditions at the time of purchase and historically has not been material. MidAmerican Energy believes that the controls installed to date are consistent with the reductions to be achieved from implementation of the rule. None of PacifiCorp's, Nevada Power's or Sierra Pacific's generating facilities are subject to the CSAPR. However, in a Notice of Data Availability published in the January 6, 2017, Federal Register, the EPA provided preliminary estimates of which upwind states may have linkages to downwind states experiencing ozone levels at or exceeding the 2015 ozone NAAQS of 70 parts per billion, and, using similar methodology to that in the CSAPR, indicated that Utah and Wyoming could have an obligation under the "good neighbor" provisions of the Clean Air Act to reduce NOx emissions. Until such time as a rule is finalized, the relevant Registrants cannot determine whether additional action may be required.

Regional Haze

The EPA's Regional Haze Rule, finalized in 1999, requires states to develop and implement plans to improve visibility in designated federally protected areas ("Class I areas"). Some of PacifiCorp's coal-fueled generating facilities in Utah, Wyoming, Arizona and Colorado and certain of Nevada Power's and Sierra Pacific's fossil-fueled generating facilities are subject to the Clean Air Visibility Rules. In accordance with the federal requirements, states are required to submit SIPs that address emissions from sources subject to BART requirements and demonstrate progress towards achieving natural visibility requirements in Class I areas by 2064.

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The state of Utah issued a regional haze SIP requiring the installation of SO2, NOx and particulate matter controls on Hunter Units 1 and 2, and Huntington Units 1 and 2. In December 2012, the EPA approved the SO2 portion of the Utah regional haze SIP and disapproved the NOx and particulate matter portions. Subsequently, the Utah Division of Air Quality completed an alternative BART analysis for Hunter Units 1 and 2, and Huntington Units 1 and 2. In January 2016, the EPA published two alternative proposals to either approve the Utah SIP as written or reject the Utah SIP relating to NOx controls and require the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years. EPA's final action on the Utah regional haze SIP was effective August 4, 2016. The EPA approved in part and disapproved in part the Utah regional haze SIP and issued a federal implementation plan ("FIP") requiring the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years of the effective date of the rule. PacifiCorp and other parties filed requests with the EPA to reconsider and stay that decision, as well as filed motions for stay and petitions for review with the Tenth Circuit Court of Appeals ("Tenth Circuit") asking the court to overturn the EPA's actions. In July 2017, the EPA issued a letter indicating it would reconsider its FIP decision. In light of the EPA's grant of reconsideration and the EPA's position in the litigation, the Tenth Circuit held the litigation in abeyance and imposed a stay of the compliance obligations of the FIP for the number of days the stay is in effect while the EPA conducts its reconsideration process. To support the reconsideration, PacifiCorp undertook additional air quality modeling using the Comprehensive Air Quality Model with Extensions ("CAMX") dispersion model. On January 14, 2019, the state of Utah submitted a SIP revision to the EPA, which includes the updated modeling information and additional analysis. On June 24, 2019, the Utah Air Quality Board unanimously voted to approve the Utah regional haze SIP revision, which incorporates a BART alternative into Utah's regional haze SIP. The BART alternative makes the shutdown of PacifiCorp's Carbon plant enforceable under the SIP and removes the requirement to install SCR technology on Hunter Units 1 and 2 and Huntington Units 1 and 2. The Utah Division of Air Quality submitted the SIP revision to the EPA for approval at the end of 2019. In January 2020, the EPA published its proposed approval of the Utah Regional Haze SIP Alternative, which makes the shutdown of the Carbon plant federally enforceable and adopts as BART the existing NOx controls and emission limits on the Hunter and Huntington plants. The proposed approval withdraws the FIP requirements to install SCR on Hunter Units 1 and 2 and Huntington Units 1 and 2. The EPA released the final rule approving the Utah Regional Haze SIP Alternative on October 28, 2020. With the approval, the EPA also finalized its withdrawal of the FIP requirements for the Hunter and Huntington plants. The Utah Regional Haze SIP Alternative took effect December 28, 2020. On January 11, 2021, the Tenth Circuit dismissed the Utah regional haze petitions on the basis of the final rule approved Utah's revised SIP and withdrawing the EPA's FIP. On January 19, 2021, Heal Utah, National Parks Conservation Association, Sierra Club and Utah Physicians for a Healthy Environment filed a petition for review of the Utah Regional Haze SIP Alternative in the Tenth Circuit.
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The state of Wyoming issued two regional haze SIPs requiring the installation of SO2, NOx and particulate matter controls on certain PacifiCorp coal-fueled generating facilities in Wyoming. The EPA approved the SO2 SIP in December 2012 and the EPA's approval was upheld on appeal by the Tenth Circuit in October 2014. In addition, the EPA initially proposed in June 2012 to disapprove portions of the NOx and particulate matter SIP and instead issue a FIP. The EPA withdrew its initial proposed actions on the NOx and particulate matter SIP and the proposed FIP, published a re-proposed rule in June 2013, and finalized its determination in January 2014, which aligns more closely with the SIP proposed by the state of Wyoming. The EPA's final action on the Wyoming SIP approved the state's plan to have PacifiCorp install low-NOx burners at Naughton Units 1 and 2, SCR controls at Naughton Unit 3 by December 2014, SCR controls at Jim Bridger Units 1 through 4 between 2015 and 2022, and low-NOx burners at Dave Johnston Unit 4. The EPA disapproved a portion of the Wyoming SIP and issued a FIP for Dave Johnston Unit 3, where it required the installation of SCR controls by 2019 or, in lieu of installing SCR controls, a commitment to shut down Dave Johnston Unit 3 by 2027, its currently approved depreciable life. The EPA also disapproved a portion of the Wyoming SIP and issued a FIP for the Wyodak coal-fueled generating facility, requiring the installation of SCR controls within five years (i.e., by 2019). The EPA action became final on March 3, 2014. PacifiCorp filed an appeal of the EPA's final action on Wyodak in March 2014. The state of Wyoming also filed an appeal of the EPA's final action, as did the Powder River Basin Resource Council, National Parks Conservation Association and Sierra Club. In September 2014, the Tenth Circuit issued a stay of the March 2019 compliance deadline for Wyodak, pending further action by the Tenth Circuit in the appeal. The EPA, U.S. Department of Justice, state of Wyoming and PacifiCorp executed a settlement agreement December 16, 2020, removing the requirement to install SCR in lieu of monthly and annual NOx emissions limits. The settlement agreement is subject to a comment period which runs through March 5, 2021. Litigation in the Tenth Circuit remains stayed pending finalization of the settlement agreement. In June 2014, the Wyoming Department of Environmental Quality issued a revised BART permit allowing Naughton Unit 3 to operate on coal through 2017 and providing for natural gas conversion of the unit in 2018. In 2017, the department approved an extension of the compliance date for Naughton Unit 3 to align with the requirements of the Wyoming SIP extending the requirement to cease coal firing to no later than January 30, 2019. The EPA issued final approval of the Wyoming SIP, including the Naughton Unit 3 gas conversion on March 21, 2019. PacifiCorp removed the unit from coal-fueled service on January 30, 2019, and its 2019 IRP Action Plan incorporates completion of the gas conversion, including all required regulatory notices and filings, by the end of 2020. On February 5, 2019, PacifiCorp submitted a reasonable progress reassessment permit application and reasonable progress determination for Jim Bridger Units 1 and 2, seeking a rescission of the December 2017 permit requiring the installation of SCR, to be replaced with permit imposing plant-wide emission limits to achieve better modeled visibility, fewer overall environmental impacts and lower costs of compliance. In May 2020, the Wyoming Air Quality Division issued a permit approving PacifiCorp's monthly and annual NOx and SO2 emission limits on the four Jim Bridger units and submitted a regional haze SIP revision to the EPA. The revised SIP grants approval of PacifiCorp's Jim Bridger reasonable progress reassessment application and incorporates PacifiCorp's proposed emission limits in lieu of the requirement to install SCR systems on Jim Bridger Units 1 and 2. The EPA is reviewing the SIP revisions.

The state of Arizona issued a regional haze SIP requiring, among other things, the installation of SO2, NOx and particulate matter controls on Cholla Unit 4. The EPA approved in part, and disapproved in part, the Arizona SIP and issued a FIP for the disapproved portions requiring SCR controls on Cholla Unit 4. PacifiCorp filed an appeal in the United States Court of Appeals for the Ninth Circuit ("Ninth Circuit") regarding the FIP as it relates to Cholla Unit 4, and the Arizona Department of Environmental Quality and other affected Arizona utilities filed separate appeals of the FIP as it relates to their interests. The Ninth Circuit issued an order in February 2015, holding the matter in abeyance while the parties pursued an alternate compliance approach for Cholla Unit 4. The Arizona Department of Environmental Quality's revision of the draft permit and revision to the Arizona regional haze SIP were approved by the EPA through final action published in the Federal Register on March 27, 2017, with an effective date of April 26, 2017. The final action allows Cholla Unit 4 to utilize coal until April 30, 2025 and convert to gas or otherwise cease burning coal by June 30, 2025. Retirement of Cholla Unit 4 was completed in December 2020.

The state of Colorado regional haze SIP requires SCR controls at Craig Unit 2 and Hayden Units 1 and 2, in which PacifiCorp has ownership interests. Each of those regional haze compliance projects are either already in service or currently being constructed. In addition, in February 2015, the state of Colorado finalized an amendment to its regional haze SIP relating to Craig Unit 1, in which PacifiCorp has an ownership interest, to require the installation of SCR controls by 2021. In September 2016, the owners of Craig Units 1 and 2 reached an agreement with state and federal agencies and certain environmental groups that were parties to the previous settlement requiring SCR to retire Unit 1 by December 31, 2025, in lieu of SCR installation, or alternatively to remove the unit from coal-fueled service by August 31, 2021 with an option to convert the unit to natural gas by August 31, 2023, in lieu of SCR installation. The terms of the agreement were approved by the Colorado Air Quality Board in December 2016, incorporated into an amended Colorado regional haze SIP in 2017 and approved by the EPA in August 2018. PacifiCorp identified a December 31, 2025, retirement date for Craig Unit 1 in its 2017 and 2019 IRPs.

Until the EPA takes final action in each state and decisions have been made in the pending appeals, PacifiCorp cannot fully determine the impacts of the Regional Haze Rule on its respective generating facilities.
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Water Quality Standards

The federal Water Pollution Control Act ("Clean Water Act") establishes the framework for maintaining and improving water quality in the United States through a program that regulates, among other things, discharges to and withdrawals from waterways. The Clean Water Act requires that cooling water intake structures reflect the "best technology available for minimizing adverse environmental impact" to aquatic organisms. After significant litigation, the EPA released a proposed rule under §316(b) of the Clean Water Act to regulate cooling water intakes at existing facilities. The final rule was released in May 2014, and became effective in October 2014. Under the final rule, existing facilities that withdraw at least 25% of their water exclusively for cooling purposes and have a design intake flow of greater than two million gallons per day are required to reduce fish impingement (i.e., when fish and other aquatic organisms are trapped against screens when water is drawn into a facility's cooling system) by choosing one of seven options. Facilities that withdraw at least 125 million gallons of water per day from waters of the United States must also conduct studies to help their permitting authority determine what site-specific controls, if any, would be required to reduce entrainment of aquatic organisms (i.e., when organisms are drawn into the facility). PacifiCorp and MidAmerican Energy are assessing the options for compliance at their generating facilities impacted by the final rule and will complete impingement and entrainment studies. PacifiCorp's Dave Johnston generating facility and all of MidAmerican Energy's coal-fueled generating facilities, except Louisa, Ottumwa and Walter Scott, Jr. Unit 4, which have water cooling towers, withdraw more than 125 million gallons per day of water from waters of the United States for once-through cooling applications. PacifiCorp's Jim Bridger, Naughton, Gadsby, Hunter and Huntington generating facilities currently utilize closed cycle cooling towers but are designed to withdraw more than two million gallons of water per day. The standards are required to be met as soon as possible after the effective date of the final rule, but no later than eight years thereafter. The costs of compliance with the cooling water intake structure rule cannot be fully determined until the prescribed studies are conducted and the respective state environmental agencies review the studies to determine whether additional mitigation technologies should be applied. If PacifiCorp's or MidAmerican Energy's existing intake structures require modification, the costs are not anticipated to be significant to the consolidated financial statements. Nevada Power and Sierra Pacific do not utilize once-through cooling water intake or discharge structures at any of their generating facilities. All of the Nevada Power and Sierra Pacific generating stations are designed to have either minimal or zero discharge; therefore, they are not impacted by the §316(b) final rule.

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In November 2015, the EPA published final effluent limitation guidelines and standards for the steam electric power generating sector which, among other things, regulate the discharge of bottom ash transport water, fly ash transport water, combustion residual leachate and non-chemical metal cleaning wastes. These guidelines, which had not been revised since 1982, were revised in response to the EPA's concerns that the addition of controls for air emissions has changed the effluent discharged from coal- and natural gas-fueled generating facilities. Under the originally promulgated guidelines, permitting authorities were required to include the new limits in each impacted facility's discharge permit upon renewal with the new limits to be met as soon as possible, beginning November 1, 2018 and fully implemented by December 31, 2023. On April 5, 2017, a request for reconsideration and administrative stay of the guidelines was filed with the EPA. The EPA granted the request for reconsideration on April 12, 2017, imposed an immediate administrative stay of compliance dates in the rule that had not passed judicial review and requested the court stay the pending litigation over the rule until September 12, 2017. On June 6, 2017, the EPA proposed to extend many of the compliance deadlines that would otherwise occur in 2018 and on September 18, 2017, the EPA issued a final rule extending certain compliance dates for flue gas desulfurization wastewater and bottom ash transport water limits until November 1, 2020. In a separate action, on April 12, 2019, the Fifth Circuit Court of Appeals vacated two aspects of the final effluent limitation guidelines, concerning discharge limits for (1) legacy wastewater from ash transport or treatment systems and (2) combustion residual leachate from landfills or settling ponds. The Fifth Circuit found that EPA's own data did not support the agency's conclusion that impoundments were the best technology available for these two waste streams. EPA must now complete a new effluent limitation guideline for these discharge limits. On November 22, 2019, the EPA proposed updates to the 2015 rule, specifically addressing flue gas desulfurization wastewater and bottom ash transport water. The rule was finalized in October 2020 and took effect December 14, 2020. EPA revised selenium limits on flue gas desulfurization wastewater and the zero-discharge requirements on bottom ash transport water associated with blowdown of ash handling systems and adjusted compliance dates to allow time to procure and install necessary technology. The rule does not address the wastestreams at issue in the Fifth Circuit Court of Appeal's April 2019 decision. While most of the issues raised by this rule are already being addressed through the CCR rule and are not expected to impose significant additional requirements on the facilities, the impact of the rule cannot be fully determined until any judicial review is conducted.

In April 2014, the EPA and the United States Army Corps of Engineers ("Corps of Engineers") issued a joint proposal to address "waters of the United States" to clarify protection under the Clean Water Act for streams and wetlands. The proposed rule comes as a result of United States Supreme Court decisions in 2001 and 2006 that created confusion regarding jurisdictional waters that were subject to permitting under either nationwide or individual permitting requirements. The final rule was released in May 2015 but is currently under appeal in multiple courts and a nationwide stay on the implementation of the rule was issued in October 2015. On January 13, 2017, the United States Supreme Court granted a petition to address jurisdictional challenges to the rule. The EPA plans to undertake a two-step process, with the first step to repeal the 2015 rule and the second step to carry out a notice-and-comment rulemaking in which a substantive re-evaluation of the definition of the "waters of the United States" will be undertaken. On July 27, 2017, the EPA and the Corps of Engineers issued a proposal to repeal the final rule and recodify the pre-existing rules pending issuance of a new rule, which was finalized September 12, 2019. On January 22, 2018, the United States Supreme Court issued its decision related to the jurisdictional challenges to the rule, holding that federal district courts, rather than federal appeals courts, have proper jurisdiction to hear challenges to the rule and instructed the Sixth Circuit Court of Appeals to dismiss the petitions for review for lack of jurisdiction, clearing the way for imposition of the rule in certain states barring final action by the EPA to formalize the extension of the compliance deadline. On December 11, 2018, the EPA and the Corps of Engineers proposed a revised definition of "waters of the United States" that is intended to further clarify jurisdictional questions, eliminate case-by-case determinations and narrow Clean Water Act jurisdiction to align with Justice Scalia's 2006 opinion in Rapanos v. United States. On January 23, 2020, the EPA and the Corps of Engineers signed the final rule narrowing the federal government's permitting authority under the Clean Water Act. The new Navigable Waters Protection Rule, which took effect 60 days after it was published in the Federal Register, redefines what waters qualify as navigable waters of the U.S. and are under Clean Water Act jurisdiction. Under the new rule, the Clean Water Act will be considered to cover territorial seas and traditional navigable waters; tributaries that flow into jurisdictional waters; wetlands that are directly adjacent to jurisdictional waters; and lakes, ponds and impoundments of jurisdictional waters. The agency and corps originally proposed six categories, but in the final version they collapsed ditches and impoundments into other categories. There are also 12 categories of waters that the agencies highlighted as being excluded from coverage, including groundwater, ephemeral streams and pools, prior converted cropland and waste treatment systems. Until the rule is fully litigated and finalized, the Registrants cannot predict the impact on overall compliance obligations.


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In April 2020, the United States Supreme Court established a new test for Clean Water Act jurisdiction in County of Maui, Hawaii v. Hawaii Wildlife Fund, finding that the statute can cover discharges of contaminated groundwater in certain circumstances. The United States Supreme Court outlined a seven-factor test to determine whether discharges conveyed through groundwater to surface water are "functionally equivalent" to direct discharges, finding that the time it takes for pollutants to travel through groundwater and the distance traveled are the two most important factors in the test. The United States Supreme Court remanded County of Maui, Hawaii to the Ninth Circuit Court of Appeals for further adjudication, which subsequently remanded the case to the district court to determine whether additional discovery is needed before applying the new seven-factor test. The EPA finalized guidance January 14, 2021, implementing County of Maui. The EPA utilized the United States Supreme Court's seven factors, plus an additional factor for the design and performance of the system or facility from which the pollutant is reached, to determine whether pollutants that reach surface waters after traveling through groundwater are a "functional equivalent" to a direct discharge that require a permit. Until the functional equivalent test and guidance are applied by the courts, the Registrants cannot determine the impact of this case on their operations.

In April 2020, the U.S. District Court of the District of Montana vacated nationwide permit 12, which provides an expedited route for projects like oil and gas pipelines and utility lines to achieve compliance with the Clean Water Act, finding that the Corps of Engineers, which implements the nationwide permit program, failed to conduct necessary programmatic consultation of nationwide permit 12 under the Endangered Species Act. The district court's vacatur, which was subsequently limited just to the Keystone XL pipeline project, the subject of the initial lawsuit, is on appeal to the Ninth Circuit Court of Appeals. On January 13, 2021, the Corps of Engineers finalized a rule modifying its nationwide permit program for certain activities affecting waters of the United States. The final rule restructures the nationwide permit program for utility lines by splitting the existing nationwide permit 12 into three separate nationwide permits – one for oil and gas, including pipelines; one for electrical and telecommunications; and one for water/sewer and other utilities. The Corps of Engineers included a biological assessment for the final rule but did not conduct a formal Endangered Species Act consultation in connection with reissuance of the nationwide permits. The Corps of Engineers reissued and revised 12 of 52 and added four new nationwide permits, which will be effective for a period of five years. The remaining nationwide permits are scheduled for renewal in advance of expiration in 2022. Until the nationwide permit challenges are fully litigated, the Registrants cannot determine the impact of this case on their operations.

Coal Combustion Byproduct Disposal

In May 2010, the EPA released a proposed rule to regulate the management and disposal of coal combustion byproducts under the RCRA. The final rule was released by the EPA on December 19, 2014, was published in the Federal Register on April 17, 2015 and was effective on October 19, 2015. The final rule regulates coal combustion byproducts as non-hazardous waste under RCRA Subtitle D and establishes minimum nationwide standards for the disposal of CCR. Under the final rule, surface impoundments and landfills utilized for coal combustion byproducts may need to be closed unless they can meet the more stringent regulatory requirements. The final rule requires regulated entities to post annual groundwater monitoring and corrective action reports. The first of these reports was posted to the respective Registrant's coal combustion rule compliance data and information websites in March 2018. Based on the results in those reports, additional action may be required under the rule.

At the time the rule was published in April 2015, PacifiCorp operated 18 surface impoundments and seven landfills that contained coal combustion byproducts. Prior to the effective date of the rule in October 2015, nine surface impoundments and three landfills were either closed or repurposed to no longer receive coal combustion byproducts and hence are not subject to the final rule. As PacifiCorp proceeded to implement the final coal combustion rule, it was determined that two surface impoundments located at the Dave Johnston generating facility were hydraulically connected and effectively constitute a single impoundment. In November 2017, a new surface impoundment was placed into service at the Naughton Generating Station. At the time the rule was published in April 2015, MidAmerican Energy owned or operated nine surface impoundments and four landfills that contain coal combustion byproducts. Prior to the effective date of the rule in October 2015, MidAmerican Energy closed or repurposed six surface impoundments to no longer receive coal combustion byproducts. Five of these surface impoundments were closed on or before December 21, 2017 and the sixth is undergoing closure. At the time the rule was published in April 2015, the Nevada Utilities operated ten evaporative surface impoundments and two landfills that contained coal combustion byproducts. Prior to the effective date of the rule in October 2015, the Nevada Utilities closed four of the surface impoundments, four impoundments discontinued receipt of coal combustion byproducts making them inactive and two surface impoundments remain active and subject to the final rule. The two landfills remain active and subject to the final rule.

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Multiple parties filed challenges over various aspects of the final rule in the D.C. Circuit in 2015, resulting in settlement of some of the issues and subsequent regulatory action by the EPA, including subjecting inactive surface impoundments to regulation. Oral argument was held by the D.C. Circuit on November 20, 2017 over certain portions of the 2015 rule that had not been settled or otherwise remanded. On August 21, 2018, the D.C. Circuit issued its opinion in Utility Solid Waste Activities Group v. EPA, finding it was arbitrary and capricious for EPA to allow unlined ash ponds to continue operating until some unknown point in the future when groundwater contamination could be detected. The D.C. Circuit vacated the closure section of the CCR rule and remanded the issue of unlined ponds to EPA for reconsideration with specific instructions to consider harm to the environment, not just to human health. The D.C. Circuit also held EPA's decision to not regulate legacy ponds was arbitrary and capricious. While the D.C. Circuit's decision was pending, the EPA, on March 15, 2018, issued a proposal to address provisions of the final CCR rule that were remanded back to the agency on June 14, 2016, by the D.C. Circuit. The proposal included provisions that establish alternative performance standards for owners and operators of CCR units located in states that have approved permit programs or are otherwise subject to oversight through a permit program administered by the EPA. The EPA finalized the first phase of the CCR rule amendments on July 30, 2018, with an effective date of August 28, 2018 (the "Phase 1, Part 1 rule"). In addition to adopting alternative performance standards and revising groundwater performance standards for certain constituents, EPA extended the deadline by which facilities must initiate closure of unlined ash ponds exceeding a groundwater protection standard and impoundments that do not meet the rule's aquifer location restrictions to October 31, 2020. Following submittal of competing motions from environmental groups and the EPA to stay or remand this deadline extension, on March 13, 2019, the D.C. Circuit granted EPA's request to remand the rule and left the October 31, 2020 deadline in place while the agency undertakes a new rulemaking establishing a new deadline for initiating closure. On August 14, 2019, the EPA released its "Phase 2" proposal, which contains targeted amendments to the CCR rule in response to court remands and EPA settlement agreements, as well as issues raised in a rulemaking petition. The Phase 2 proposal modifies the definition of "beneficial use" by replacing a mass-based threshold with new location-based criteria for triggering the need to conduct an environmental demonstration; establishes a definition of "CCR storage pile" to address the temporary storage of CCR on the ground, depending on whether the material is destined for disposal or beneficial use; makes certain changes to the rule's annual groundwater monitoring and corrective action reports to make it easier for the public to see and understand the data contained within the reports; modifies the requirements related to facilities' publicly available CCR rule websites to make the information more readily available; and establishes a risk-based groundwater monitoring protection standard for boron in the event the EPA decides to add boron to Appendix IV in the CCR rule. The EPA accepted comments on the Phase 2 proposal through October 15, 2019. On December 22, 2020, the EPA released a notice of data availability relating to the Phase 2 proposal to revise the CCR rule's definition of beneficial use and provisions governing piles of CCR on- and off-site prior to beneficial use. The new information presented by the notice includes data and information the EPA received during the comment period on the Phase 2 proposal. The EPA accepted comment on the notice of data availability through February 22, 2021. The EPA has not announced an anticipated timeline for completing the Phase 2 rule. In February 2020, the EPA proposed a federal CCR permit program as required by the WIIN Act of 2016. The proposal would require permits for all CCR units in states that do not have an EPA-approved CCR program. The proposal would establish individual, general and permit-by-rule permits; a tiered schedule for applications to prioritize permits for high-hazard potential CCR units; and postpone timelines for permit applications for all other CCR units. The EPA has not announced an anticipated timeline for completing the federal CCR permit rule. In October 2020, the EPA released an advanced notice of proposed rulemaking on legacy CCR surface impoundments, seeking comment on and information related to issues relevant to development of regulations for legacy impoundments. Issues identified by the EPA include the definition of a legacy impoundment, information on the universe of legacy impoundments, the types of regulatory requirements that should apply to legacy impoundments, and the EPA's regulatory authority to regulate legacy impoundments under RCRA subtitle D. The EPA accepted comment on the advanced notice through February 12, 2021. Until the proposals are finalized and fully litigated, the Registrants cannot determine whether additional action may be required.
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In August 2020, the EPA finalized its Holistic Approach to Closure: Part A rule ("Part A rule"). This proposal addressed the D.C. Circuit's revocation of the provisions that allow unlined impoundments to continue receiving ash. The Part A rule was finalized in August 2020 and establishes a new deadline of April 11, 2021, by which all unlined surface impoundments (including clay lined impoundments that do not otherwise meet the definition of "lined") must initiate closure. The Part A rule also identifies two extensions to that date: (1) a site-specific extension to develop alternate disposal capacity and initiate closure by October 15, 2023; and (2) a site-specific extension for facilities that agree to shut down the coal-fueled unit and complete ash pond closure activities by October 17, 2028. In addition to these closure deadline provisions, the Part A rule also finalized changes to the CCR rule's annual groundwater monitoring and corrective action reports and modified requirements related to CCR rule compliance websites initially proposed in the Phase 2 rule. PacifiCorp developed a demonstration for the development of alternative capacity for the Jim Bridger Plant FGD Pond 2 and a demonstration for closure of the Naughton Plant and ash pond and submitted them to the EPA in November 2020. Approval of these demonstrations is anticipated in first quarter 2021. No other Registrants used the provisions of the Part A rule. In December 2020, the EPA finalized its Holistic Approach to Closure: Part B rule ("Part B rule"), which establishes procedures for owners and operators of unlined ash ponds to demonstrate that the liner systems or underlying soils for these units perform as well as the liner criteria in the CCR rule. Additional provisions included in the proposed rule but not finalized, including the use of CCR in closure activities and allowing for the completion of groundwater corrective action during the post-closure care period, will be addressed in future rulemakings. As finalized, none of the relevant Registrants anticipate exercising the provisions of the Part B rule.

Separately, on August 10, 2017, the EPA issued proposed permitting guidance on how states' CCR permit programs should comply with the requirements of the final rule as authorized under the December 2016 Water Infrastructure Improvements for the Nation Act. Using that guidance, the state of Oklahoma applied for EPA approval of its state program and, on June 28, 2018, the EPA's approval of the application was published in the Federal Register. Environmental groups, including Waterkeeper Alliance and the Sierra Club, filed suit in the D.C. Circuit on September 26, 2018, alleging that the EPA unlawfully approved Oklahoma's permit program. This suit also incorporates claims first identified in a July 26, 2018 notice of intent to sue that alleged the EPA failed to perform nondiscretionary duties related to the development and publication of minimum guidelines for public participation in the approval of state permit programs for CCR. To date, none of the states in which the Registrants operate has applied for EPA approval of state permitting authority. The state of Utah adopted the federal final rule in September 2016, which required PacifiCorp to submit permit applications for two of its landfills by March 2017. It is anticipated that the state of Utah will apply for EPA approval of its CCR permit program prior to the end of 2021. In 2019, the state of Wyoming proposed to adopt state rules which incorporate the final federal rule by reference. It is anticipated that Wyoming will finalize its rule and seek the EPA's approval to implement a state permit program in 2021.

Notwithstanding the status of the final CCR rule, citizens' suits have been filed against regulated entities seeking judicial relief for contamination alleged to have been caused by releases of coal combustion byproducts. Some of these cases have been successful in imposing liability upon companies if coal combustion byproducts contaminate groundwater that is ultimately released or connected to surface water. In addition, actions have been filed against regulated entities seeking to require that surface impoundments containing CCR be subject to closure by removal rather than being allowed to effectuate closure in place as provided under the final rule. The Registrants are not a party to these lawsuits and until they are resolved, the Registrants cannot predict the impact on overall compliance obligations.

On January 20, 2021, President Biden issued an executive order on climate change which also required review of actions taken over the preceding four years that were harmful to "public health, environment, unsupported by the best available science, or otherwise not in the national best interest." The order included a non-exhaustive list of regulatory actions to be reviewed by the issuing agencies, including New Source Performance Standards for the power sector and the oil and gas sector, rescission of the Clean Power Plan, particulate matter and ozone NAAQS, steam electric effluent limitation guidelines, waters of the United States, reissuance of nationwide permits, and the phase one, part one and holistic approach to closure: parts A and B under the CCR rule. In addition, the Biden administration issued a regulatory freeze memorandum that prohibits submission of rules and guidance documents to the Federal Register without direct review, requires immediate withdrawal of rules and guidance documents submitted to the Federal Register but not yet published, and, for rules and guidance documents published but not yet having taken effect, consideration of a 60-day delay and possible additional comment period. Until the issuing agency completes its review and takes final action consistent with these directives, the relevant Registrant cannot determine whether additional action under any of these rules will be necessary.


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Other

Other laws, regulations and agencies to which the relevant Registrants are subject include, but are not limited to:
The federal Comprehensive Environmental Response, Compensation and Liability Act and similar state laws may require any current or former owners or operators of a disposal site, as well as transporters or generators of hazardous substances sent to such disposal site, to share in environmental remediation costs. Certain Registrants have been identified as potentially responsible parties in connection with certain disposal sites. The relevant Registrants have completed several cleanup actions and are participating in ongoing investigations and remedial actions. Costs associated with these actions are not expected to be material and are expected to be found prudent and included in rates.
The Nuclear Waste Policy Act of 1982, under which the United States DOE is responsible for the selection and development of repositories for, and the permanent disposal of, spent nuclear fuel and high-level radioactive wastes. Refer to Note 14 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 11 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K for additional information regarding MidAmerican Energy's nuclear decommissioning obligations.
The federal Surface Mining Control and Reclamation Act of 1977 and similar state statutes establish operational, reclamation and closure standards that must be met during and upon completion of PacifiCorp's mining activities.
The FERC evaluates hydroelectric systems to ensure environmental impacts are minimized, including the issuance of environmental impact statements for licensed projects both initially and upon relicensing. The FERC monitors the hydroelectric facilities for compliance with the license terms and conditions, which include environmental provisions. Refer to Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 14 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K for information regarding the relicensing of PacifiCorp's Klamath River hydroelectric system.

The Registrants expect they will be allowed to recover their respective prudently incurred costs to comply with the environmental laws and regulations discussed above. The Registrants' planning efforts take into consideration the complexity of balancing factors such as: (a) pending environmental regulations and requirements to reduce emissions, address waste disposal, ensure water quality and protect wildlife; (b) avoidance of excessive reliance on any one generation technology; (c) costs and trade-offs of various resource options including energy efficiency, demand response programs and renewable generation; (d) state-specific energy policies, resource preferences and economic development efforts; (e) additional transmission investment to reduce power costs and increase efficiency and reliability of the integrated transmission system; and (f) keeping rates affordable. Due to the number of generating units impacted by environmental regulations, deferring installation of compliance-related projects is often not feasible or cost effective and places the Registrants at risk of not having access to necessary capital, material, and labor while attempting to perform major equipment installations in a compressed timeframe concurrent with other utilities across the country. Therefore, the Registrants have established installation schedules with permitting agencies that coordinate compliance timeframes with construction and tie-in of major environmental compliance projects as units are scheduled off-line for planned maintenance outages; these coordinated efforts help reduce costs associated with replacement power and maintain system reliability.

Item 1A.    Risk Factors

Each Registrant is subject to numerous risks and uncertainties, including, but not limited to, those described below. Careful consideration of these risks, together with all of the other information included in this Form 10-K and the other public information filed by the relevant Registrant, should be made before making an investment decision. Additional risks and uncertainties not presently known or which each Registrant currently deems immaterial may also impair its business operations. Unless stated otherwise, the risks described below generally relate to each Registrant.

Corporate and Financial Structure Risks

BHE is a holding company and depends on distributions from subsidiaries, including joint ventures, to meet its obligations.

BHE is a holding company with no material assets other than the ownership interests in its subsidiaries and joint ventures, collectively referred to as its subsidiaries. Accordingly, cash flows and the ability to meet BHE's obligations are largely dependent upon the earnings of its subsidiaries and the payment of such earnings to BHE in the form of dividends or other distributions. BHE's subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay amounts due pursuant to BHE's senior debt, junior subordinated debt or its other obligations, or to make funds available, whether by dividends or other payments, for the payment of amounts due pursuant to BHE's senior debt, junior subordinated
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debt or its other obligations, and do not guarantee the payment of any of its obligations. Distributions from subsidiaries may also be limited by:
their respective earnings, capital requirements, and required debt and preferred stock payments;
the satisfaction of certain terms contained in financing, ring-fencing or organizational documents; and
regulatory restrictions that limit the ability of BHE's regulated utility subsidiaries to distribute profits.

BHE is substantially leveraged, the terms of its existing senior and junior subordinated debt do not restrict the incurrence of additional debt by BHE or its subsidiaries, and BHE's senior debt is structurally subordinated to the debt of its subsidiaries, and each of such factors could adversely affect BHE's consolidated financial results.

A significant portion of BHE's capital structure is comprised of debt, and BHE expects to incur additional debt in the future to fund items such as, among others, acquisitions, capital investments and the development and construction of new or expanded facilities. As of December 31, 2020, BHE had the following outstanding obligations:
senior unsecured debt of $13.4 billion;
junior subordinated debentures of $100 million;
guarantees and letters of credit in respect of subsidiary and equity method investments aggregating $1.3 billion; and
commitments, subject to satisfaction of certain specified conditions, to provide equity contributions in support of renewable tax equity investments totaling $563 million.

BHE's consolidated subsidiaries also have significant amounts of outstanding debt, which totaled $38.6 billion as of December 31, 2020. These amounts exclude (a) trade debt, (b) preferred stock obligations, (c) letters of credit in respect of subsidiary debt, and (d) BHE's share of the outstanding debt of its own or its subsidiaries' equity method investments.

Given BHE's substantial leverage, it may not have sufficient cash to service its debt, which could limit its ability to finance future acquisitions, develop and construct additional projects, or operate successfully under difficult conditions, including those brought on by adverse national and global economies, unfavorable financial markets or growth conditions where its capital needs may exceed its ability to fund them. BHE's leverage could also impair its credit quality or the credit quality of its subsidiaries, making it more difficult to finance operations or issue future debt on favorable terms, and could result in a downgrade in debt ratings by credit rating agencies.

The terms of BHE's and its subsidiaries' debt do not limit BHE's ability or the ability of its subsidiaries to incur additional debt or issue preferred stock. Accordingly, BHE or its subsidiaries could enter into acquisitions, new financings, refinancings, recapitalizations, leases or other highly leveraged transactions that could significantly increase BHE's or its subsidiaries' total amount of outstanding debt. The interest payments needed to service this increased level of debt could adversely affect BHE's or its subsidiaries' financial results. Many of BHE's subsidiaries' debt agreements contain covenants, or may in the future contain covenants, that restrict or limit, among other things, such subsidiaries' ability to create liens, sell assets, make certain distributions, incur additional debt or miss contractual deadlines or requirements, and BHE's ability to comply with these covenants may be affected by events beyond its control. Further, if an event of default accelerates a repayment obligation and such acceleration results in an event of default under some or all of BHE's other debt, BHE may not have sufficient funds to repay all of the accelerated debt simultaneously, and the other risks described under "Corporate and Financial Structure Risks" may be magnified as well.

Because BHE is a holding company, the claims of its senior debt holders are structurally subordinated with respect to the assets and earnings of its subsidiaries. Therefore, the rights of its creditors to participate in the assets of any subsidiary in the event of a liquidation or reorganization are subject to the prior claims of the subsidiary's creditors and preferred shareholders, if any. In addition, pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties, MidAmerican Energy's electric utility properties in the state of Iowa, Nevada Power's and Sierra Pacific's properties in the state of Nevada, AltaLink's transmission properties, the equity interest of MidAmerican Funding's subsidiary and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of solar and wind generation projects, are directly or indirectly pledged to secure their financings and, therefore, may be unavailable as potential sources of repayment of BHE's debt.

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A downgrade in BHE's credit ratings or the credit ratings of its subsidiaries, including the Subsidiary Registrants, could negatively affect BHE's or its subsidiaries' access to capital, increase the cost of borrowing or raise energy transaction credit support requirements.

BHE's senior unsecured debt and its subsidiaries' long-term debt, including the Subsidiary Registrants, are rated by various rating agencies. BHE cannot give assurance that its senior unsecured debt rating or any of its subsidiaries' long-term debt ratings will not be reduced in the future. Although none of the Registrants' outstanding debt has rating-downgrade triggers that would accelerate a repayment obligation, a credit rating downgrade would increase any such Registrant's borrowing costs and commitment fees on its revolving credit agreements and other financing arrangements, perhaps significantly. In addition, such Registrant would likely be required to pay a higher interest rate in future financings, and the potential pool of investors and funding sources would likely decrease. Further, access to the commercial paper market could be significantly limited, resulting in higher interest costs.

Similarly, any downgrade or other event negatively affecting the credit ratings of BHE's subsidiaries could make their costs of borrowing higher or access to funding sources more limited, which in turn could cause BHE to provide liquidity in the form of capital contributions or loans to such subsidiaries, thus reducing its and its subsidiaries' liquidity and borrowing capacity.

Most of the Registrants' large wholesale customers, suppliers and counterparties require such Registrant to have sufficient creditworthiness in order to enter into transactions, particularly in the wholesale energy markets. If the credit ratings of a Registrant were to decline, especially below investment grade, the relevant Registrant's financing costs and borrowings would likely increase because certain counterparties may require collateral in the form of cash, a letter of credit or some other form of security for existing transactions and as a condition to entering into future transactions with such Registrant. Amounts could be material and could adversely affect such Registrant's liquidity and cash flows.

BHE's majority shareholder, Berkshire Hathaway, could exercise control over BHE in a manner that would benefit Berkshire Hathaway to the detriment of BHE's creditors and BHE could exercise control over the Subsidiary Registrants in a manner that would benefit BHE to the detriment of the Subsidiary Registrants' creditors and PacifiCorp'spreferred stockholders.

Berkshire Hathaway is majority owner of BHE and has control over all decisions requiring shareholder approval. In circumstances involving a conflict of interest between Berkshire Hathaway and BHE's creditors, Berkshire Hathaway could exercise its control in a manner that would benefit Berkshire Hathaway to the detriment of BHE's creditors.

BHE indirectly owns all of the common stock of PacifiCorp, Nevada Power and Sierra Pacific and the membership interest in Eastern Energy Gas. BHE is also the sole member of MidAmerican Funding and, accordingly, indirectly owns all of MidAmerican Energy's common stock. As a result, BHE has control over all decisions requiring shareholder approval, including the election of directors. In circumstances involving a conflict of interest between BHE and the creditors of the Subsidiary Registrants, BHE could exercise its control in a manner that would benefit BHE to the detriment of the Subsidiary Registrants' creditors.

Business Risks

Much of BHE's growth has been achieved through acquisitions, and any such acquisition may not be successful.

Much of BHE's growth has been achieved through acquisitions. Future acquisitions may range from buying individual assets to the purchase of entire businesses. BHE will continue to investigate and pursue opportunities for future acquisitions that it believes, but cannot assure, may increase value and expand or complement existing businesses. BHE may participate in bidding or other negotiations at any time for such acquisition opportunities which may or may not be successful.

Any acquisition entails numerous risks, including, among others:
the failure to complete the transaction for various reasons, such as the inability to obtain the required regulatory approvals, materially adverse developments in the potential acquiree's business or financial condition or successful intervening offers by third parties;
the failure of the combined business to realize the expected benefits;
the risk that federal, state or foreign regulators or courts could require regulatory commitments or other actions in respect of acquired assets, potentially including programs, contributions, investments, divestitures and market mitigation measures;
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the risk of unexpected or unidentified issues not discovered in the diligence process; and
the need for substantial additional capital and financial investments.

An acquisition could cause an interruption of, or a loss of momentum in, the activities of one or more of BHE's subsidiaries. In addition, the final orders of regulatory authorities approving acquisitions may be subject to appeal by third parties. The diversion of BHE management's attention and any delays or difficulties encountered in connection with the approval and integration of the acquired operations could adversely affect BHE's combined businesses and financial results and could impair its ability to realize the anticipated benefits of the acquisition.

BHE cannot assure that future acquisitions, if any, or any integration efforts will be successful, or that BHE's ability to repay its obligations will not be adversely affected by any future acquisitions.

The Registrants are subject to operating uncertainties and events beyond each respective Registrant's control that impact the costs to operate, maintain, repair and replace utility and interstate natural gas pipeline systems, which could adversely affect each respective Registrant's financial results.

The operation of complex utility systems or interstate natural gas pipeline and storage systems that are spread over large geographic areas involves many operating uncertainties and events beyond each respective Registrant's control. These potential events include the breakdown or failure of the Registrants' thermal, nuclear, hydroelectric, solar, wind and other electricity generating facilities and related equipment, compressors, pipelines, transmission and distribution lines or other equipment or processes, which could lead to catastrophic events; unscheduled outages; strikes, lockouts or other labor-related actions; shortages of qualified labor; transmission and distribution system constraints; failure to obtain, renew or maintain rights-of-way, easements and leases on United States federal, Native American, First Nations or tribal lands; terrorist activities or military or other actions, including cyber attacks; fuel shortages or interruptions; unavailability of critical equipment, materials and supplies; low water flows and other weather-related impacts; performance below expected levels of output, capacity or efficiency; operator error; third-party excavation errors; unexpected degradation of pipeline systems; design, construction or manufacturing defects; and catastrophic events such as severe storms, floods, fires, earthquakes, explosions, landslides, an electromagnetic pulse, mining incidents, litigation, wars, terrorism, pandemics (including potentially in relation to COVID-19) and embargoes. A catastrophic event might result in injury or loss of life, extensive property damage or environmental or natural resource damages. For example, in the event of an uncontrolled release of water at one of PacifiCorp's high hazard potential hydroelectric dams, it is probable that loss of human life, disruption of lifeline facilities and property damage could occur in the downstream population and civil or other penalties could be imposed by the FERC. The extent of that liability would be determined by the applicable state law where any such damage occurred. Any of these events or other operational events could significantly reduce or eliminate the relevant Registrant's revenue or significantly increase its expenses, thereby reducing the availability of distributions to BHE. For example, if the relevant Registrant cannot operate its electricity or natural gas facilities at full capacity due to damage caused by a catastrophic event, its revenue could decrease and its expenses could increase due to the need to obtain energy from more expensive sources.

Further, the Registrants self-insure many risks, and current and future insurance coverage may not be sufficient to replace lost revenue or cover repair and replacement costs or other damages. The scope, cost and availability of each Registrant's insurance coverage may change, including the portion that is self-insured. Any reduction of each Registrant's revenue or increase in its expenses resulting from the risks described above, could adversely affect the relevant Registrant's financial results.

The Registrants are subject to increasing risk from catastrophic wildfires and may be unable to obtain enough insurance coverage at a reasonable cost or at all to adequately protect the Registrants from liability, which could materially affect the Registrants financial results and liquidity.

The risk of catastrophic and severe wildfires has increased in the western United States giving rise to large damage claims against utilities for fire-related losses. Catastrophic and severe wildfires can occur in PacifiCorp, Nevada Power and Sierra Pacific's ("Western Domestic Utilities") service territory even when the Western Domestic Utilities effectively implement their wildfire mitigation plans and prudently manage their systems.

In California, for example, where PacifiCorp operates, "inverse condemnation" currently exposes utilities to potential liability for property damages where the utility's electrical equipment was a substantial cause of the wildfire. California courts have held that utilities can be held liable under inverse condemnation without being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover attorney's fees. As a result of inverse condemnation being applied to utilities and wildfire damages, recent losses recorded by insurance companies, and the risk of an increase in the frequency, duration and size of wildfires, insurance for wildfire liabilities may not be available or may be available only at rates that are prohibitively expensive. In addition, even if insurance for wildfire liabilities is available, it may not be available in amounts
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necessary to cover potential losses. Uninsured losses and increases in the cost of insurance may be challenged when PacifiCorp seeks cost recovery and may not be recoverable in customer rates.

The Western Domestic Utilities monitor weather conditions with specific thresholds for designated high fire consequence areas to help ensure the safe and reliable operation of their systems during periods of elevated wildfire ignition risk. Should weather conditions become extreme, the Western Domestic Utilities may de-energize certain sections of their distribution and transmission facilities as a last resort to minimize risk to the public. These "public safety power shutoffs" could be subject to increased scrutiny by regulators and policy makers. And, although "public safety power shutoffs" are intended to minimize risk of wildfire ignition, de-energization may cause other damages for which the Western Domestic Utilities could be held liable.

Damage claims against PacifiCorp for the 2020 Wildfires (as defined below) may materially affect PacifiCorp's financial condition and results of operations.

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and California (the "2020 Wildfires"). The 2020 Wildfires spread over certain parts of PacifiCorp's service territory and surrounding areas in Oregon and California and are 100% contained. Investigations into the cause and origin of each wildfire are complex and ongoing. Although those investigations are not complete, several civil actions (including a putative class action) have been filed in Oregon and California on behalf of citizens and businesses who suffered damages from fires allegedly involving PacifiCorp's equipment. It is possible that additional lawsuits against PacifiCorp may be filed in Oregon or California with respect to the 2020 Wildfires. If PacifiCorp is found liable for damages related to the 2020 Wildfires and is unable to, or believes that it will be unable to, recover those damages through insurance or customer rates, or access the bank and capital markets on reasonable terms, PacifiCorp's financial results could be adversely affected. Refer to PacifiCorp's Note 14 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the 2020 Wildfires.

Each Registrant's business could be adversely affected by COVID-19 or other pathogens, or similar crises.

Each Registrant's business could be adversely affected by the worldwide outbreak of COVID-19 generally and more specifically in the markets in which we operate, including, without limitation, if each Registrant's utility customers experience decreases in demand for their products and services or otherwise reduce their consumption of electricity or natural gas that the respective Registrant supplies, or if such Registrant experiences material payment defaults by its customers. For example, if the tourism industry in Nevada experiences a significant and extended decrease as a result of changes in customer behavior, demand for electricity sold by Nevada Power and Sierra Pacific could decrease. In addition, each Registrant's results and financial condition may be adversely affected by federal, state or local legislation related to COVID-19 (or other similar laws, regulations, orders or other governmental or regulatory actions) that would impose a moratorium on terminating electric or natural gas utility services, including related assessment of late fees, due to non-payment or other circumstances. Certain Registrants have already temporarily implemented certain of these measures, either voluntarily or in accordance with requirements of the respective Registrant's public utility commissions. These requirements will likely remain for the duration of the COVID-19 pandemic. Additionally, HomeServices' residential real estate brokerage business could experience a decline (which could be significant) in residential property transactions if potential customers elect to defer purchases in reaction to any substantial outbreak, or fear of such outbreak, of COVID-19 or other pathogen, or due to general economic uncertainty such as high unemployment levels, in some or all of the real estate markets in which HomeServices operates. The government and regulators could impose other requirements on each Registrant's business that could have an adverse impact on such Registrant's financial results.

Further, the recent outbreak of COVID-19, or another pathogen, could disrupt supply chains (including supply chains for energy generation, steel or transmission wire) relating to the markets each Registrant serves, which could adversely impact such Registrant's ability to generate or supply power. In addition, such disruptions to the supply chain could delay certain construction and other capital expenditure projects, including construction and repowering of the Registrants' renewable generation projects. Such disruptions could adversely affect the impacted Registrant's future financial results.

Such declines in demand, any inability to generate or supply power or delays in capital projects could also significantly reduce cash flows at BHE's subsidiaries, thereby reducing the availability of distributions to BHE, which could adversely affect its financial results.


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Each Registrant is subject to extensive federal, state, local and foreign legislation and regulation, including numerous environmental, health, safety, reliability, data privacy and other laws and regulations that affect its operations and costs. These laws and regulations are complex, dynamic and subject to new interpretations or change. In addition, new laws and regulations, including initiatives regarding deregulation and restructuring of the utility industry, are continually being proposed and enacted that impose new or revised requirements or standards on each Registrant.

Each Registrant is required to comply with numerous federal, state, local and foreign laws and regulations as described in "General Regulation" and "Environmental Laws and Regulations" in Item 1 of this Form 10-K that have broad application to each Registrant and limits the respective Registrant's ability to independently make and implement management decisions regarding, among other items, acquiring businesses; constructing, acquiring, disposing or retiring of operating assets; operating and maintaining generating facilities and transmission and distribution system assets; complying with pipeline safety and integrity and environmental requirements; setting rates charged to customers; establishing capital structures and issuing debt or equity securities; transacting between subsidiaries and affiliates; and paying dividends or similar distributions. These laws and regulations, which are followed in developing the Registrants' safety and compliance programs and procedures, are implemented and enforced by federal, state and local regulatory agencies, such as the Occupational Safety and Health Administration, the FERC, the EPA, the DOT, the NRC, the Federal Mine Safety and Health Administration and various state regulatory commissions in the United States, and foreign regulatory agencies, such as GEMA, which discharges certain of its powers through its staff within Ofgem, in Great Britain and the AUC in Alberta, Canada.

Compliance with applicable laws and regulations generally requires each Registrant to obtain and comply with a wide variety of licenses, permits, inspections, audits and other approvals. Further, compliance with laws and regulations can require significant capital and operating expenditures, including expenditures for new equipment, inspection, cleanup costs, removal and remediation costs and damages arising out of contaminated properties. Compliance activities pursuant to existing or new laws and regulations could be prohibitively expensive or otherwise uneconomical. As a result, each Registrant could be required to shut down some facilities or materially alter its operations. Further, each Registrant may not be able to obtain or maintain all required environmental or other regulatory approvals and permits for its operating assets or development projects. Delays in, or active opposition by third parties to, obtaining any required environmental or regulatory authorizations or failure to comply with the terms and conditions of the authorizations may increase costs or prevent or delay each Registrant from operating its facilities, developing or favorably locating new facilities or expanding existing facilities. If any Registrant fails to comply with any environmental or other regulatory requirements, such Registrant may be subject to penalties and fines or other sanctions, including changes to the way its electricity generating facilities are operated that may adversely impact generation or how the Pipeline Companies are permitted to operate their systems that may adversely impact throughput. The costs of complying with laws and regulations could adversely affect each Registrant's financial results. Not being able to operate existing facilities or develop new generating facilities to meet customer electricity needs could require such Registrant to increase its purchases of electricity on the wholesale market, which could increase market and price risks and adversely affect such Registrant's financial results.

Existing laws and regulations, while comprehensive, are subject to changes and revisions from ongoing policy initiatives by legislators and regulators and to interpretations that may ultimately be resolved by the courts. For example, changes in laws and regulations could result in, but are not limited to, increased competition and decreased revenues within each Registrant's service territories, such as the defeated Nevada Energy Choice Initiative; new environmental requirements, including the implementation of or changes to the Affordable Clean Energy rule, RPS and GHG emissions reduction goals; the issuance of new or stricter air quality standards; the implementation of energy efficiency mandates; the issuance of regulations governing the management and disposal of coal combustion byproducts; changes in forecasting requirements; changes to each Registrant's service territories as a result of condemnation or takeover by municipalities or other governmental entities, particularly where it lacks the exclusive right to serve its customers; the inability of each Registrant to recover its costs on a timely basis, if at all; new pipeline safety requirements; or a negative impact on each Registrant's current cost recovery arrangements. In addition to changes in existing legislation and regulation, new laws and regulations are likely to be enacted from time to time that impose additional or new requirements or standards on each Registrant. Adverse rulings in GHG-related cases could result in increased or changed regulations and could increase costs for GHG emitters, including the Registrants' generating facilities. The GHG rules, changes to those rules, and the Registrants' compliance requirements are subject to potential outcomes from proceedings and litigation challenging the rules.

New federal, regional, state and international accords, legislation, regulation, or judicial proceedings limiting GHG emissions could have a material adverse impact on the Registrants, the United States and the global economy. Companies and industries with higher GHG emissions, such as utilities with significant coal-fueled generating facilities, will be subject to more direct impacts and greater financial and regulatory risks. The impact is dependent on numerous factors, none of which can be meaningfully quantified at this time. These factors include, but are not limited to, the magnitude and timing of GHG emissions reduction requirements; the design of the requirements; the cost, availability and effectiveness of emissions control technology;
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the price, distribution method and availability of offsets and allowances used for compliance; government-imposed compliance costs; and the existence and nature of incremental cost recovery mechanisms. Examples of how new requirements may impact the Registrants include:
Additional costs may be incurred to purchase required emissions allowances under any market-based cap-and-trade system in excess of allocations that are received at no cost. These purchases would be necessary until new technologies could be developed and deployed to reduce emissions or lower carbon generation is available;
Acquiring and renewing construction and operating permits for new and existing generating facilities may be costly and difficult;
Additional costs may be incurred to purchase and deploy new generating technologies;
Costs may be incurred to retire existing coal-fueled generating facilities before the end of their otherwise useful lives or to convert them to burn fuels, such as natural gas or biomass, that result in lower emissions;
Operating costs may be higher and generating unit outputs may be lower;
Higher interest and financing costs and reduced access to capital markets may result to the extent that financial markets view climate change and GHG emissions as a greater business risk; and
The relevant Registrant's natural gas pipeline operations, electric transmission and retail sales may be impacted in response to changes in customer demand and requirements to reduce GHG emissions.

The impact of events or conditions caused by climate change, whether from natural processes or human activities, are uncertain and could vary widely, from highly localized to worldwide, and the extent to which a utility's operations may be affected is uncertain. Climate change may cause physical and financial risk through, among other things, sea level rise, changes in precipitation and extreme weather events. Consumer demand for energy may increase or decrease, based on overall changes in weather and as customers promote lower energy consumption through the continued use of energy efficiency programs or other means. Availability of resources to generate electricity, such as water for hydroelectric production and cooling purposes, may also be impacted by climate change and could influence the Registrants' existing and future electricity generating portfolio. These issues may have a direct impact on the costs of electricity production and increase the price customers pay or their demand for electricity.

Implementing actions required under, and otherwise complying with, new federal and state laws and regulations and changes in existing ones are among the most challenging aspects of managing utility operations. The Registrants cannot accurately predict the type or scope of future laws and regulations that may be enacted, changes in existing ones or new interpretations by agency orders or court decisions, nor can each Registrant determine their impact on it at this time; however, any one of these could adversely affect each Registrant's financial results through higher capital expenditures and operating costs, early closure of generating facilities or lower tax benefits or restrict or otherwise cause an adverse change in how each Registrant operates its business. To the extent that each Registrant is not allowed by its regulators to recover or cannot otherwise recover the costs to comply with new laws and regulations or changes in existing ones, the costs of complying with such additional requirements could have a material adverse effect on the relevant Registrant's financial results. Additionally, even if such costs are recoverable in rates, if they are substantial and result in rates increasing to levels that substantially reduce customer demand, this could have a material adverse effect on the relevant Registrant's financial results.

Recovery of costs and certain activities by each Registrant is subject to regulatory review and approval, and the inability to recover costs or undertake certain activities may adversely affect each Registrant's financial results.

State Regulatory Rate Review Proceedings

The Utilities establish rates for their regulated retail service through state regulatory proceedings. These proceedings typically involve multiple parties, including government bodies and officials, consumer advocacy groups and various consumers of energy, who have differing concerns but generally have the common objective of limiting rate increases or requesting rate decreases while also requiring the Utilities to ensure system reliability. Decisions are subject to judicial appeal, potentially leading to further uncertainty associated with the approval proceedings.

States set retail rates based in part upon the state regulatory commission's acceptance of an allocated share of total utility costs. When states adopt different methods to calculate interjurisdictional cost allocations, some costs may not be incorporated into rates of any state or other jurisdiction. Ratemaking is also generally done on the basis of estimates of normalized costs, so if a given year's realized costs are higher than normalized costs, rates may not be sufficient to cover those costs. In some cases, actual costs are lower than the normalized or estimated costs recovered through rates and from time-to-time may result in a state
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regulator requiring refunds to customers. Each state regulatory commission generally sets rates based on a test year established in accordance with that commission's policies. The test year data adopted by each state regulatory commission may create a lag between the incurrence of a cost and its recovery in rates. Each state regulatory commission also decides the allowed levels of expense, investment and capital structure that it deems are prudently incurred in providing the service and may disallow recovery in rates for any costs that it believes do not meet such standard. Additionally, each state regulatory commission establishes the allowed rate of return the Utilities will be given an opportunity to earn on their sources of capital. While rate regulation is premised on providing a fair opportunity to earn a reasonable rate of return on invested capital, the state regulatory commissions do not guarantee that each Registrant will be able to realize the allowed rate of return or recover all of its costs even if it believes such costs to be prudently incurred.

Some state regulatory commissions have authorized recovery of certain costs above the level assumed in establishing base rates through adjustment mechanisms, which may be subject to customer sharing. Any significant increase in fuel costs for electricity generation or purchased electricity costs could have a negative impact on the Utilities, despite efforts to minimize this impact through the use of hedging contracts and adjustment mechanisms or through future general regulatory rate reviews. Any of these consequences could adversely affect each Registrant's financial results.

FERC Jurisdiction

The FERC authorizes cost-based rates associated with transmission services provided by the Utilities' transmission facilities. Under the Federal Power Act, the Utilities, or MISO as it relates to MidAmerican Energy, may voluntarily file, or may be obligated to file, for changes, including general rate changes, to their system-wide transmission service rates. General rate changes implemented may be subject to refund. The FERC also has responsibility for approving both cost- and market-based rates under which the Utilities sell electricity in the wholesale market, has jurisdiction over most of PacifiCorp's hydroelectric generating facilities and has broad jurisdiction over energy markets. The FERC may impose price limitations, bidding rules and other mechanisms to address some of the volatility of these markets or could revoke or restrict the ability of the Utilities to sell electricity at market-based rates, which could adversely affect each Registrant's financial results. The FERC also maintains rules concerning standards of conduct, affiliate restrictions, interlocking directorates and cross-subsidization. As a transmission owning member of MISO, MidAmerican Energy is also subject to MISO-directed modifications of market rules, which are subject to FERC approval and operational procedures. As participants in EIM, PacifiCorp, Nevada Power and Sierra Pacific are also subject to applicable California ISO rules, which are subject to FERC approval and operational procedures. The FERC may also impose substantial civil penalties for any non-compliance with the Federal Power Act and the FERC's rules and orders.

The NERC has standards in place to ensure the reliability of the electric generation system and transmission grid. The Utilities are subject to the NERC's regulations and periodic audits to ensure compliance with those regulations. The NERC may carry out enforcement actions for non-compliance and administer significant financial penalties, subject to the FERC's review.

The FERC has jurisdiction over, among other things, the construction, abandonment, modification and operation of natural gas pipelines and related facilities used in the transportation, storage and sale of natural gas in interstate commerce, including all rates, charges and terms and conditions of service. The FERC also has market transparency authority and has adopted additional reporting and internet posting requirements for natural gas pipelines and buyers and sellers of natural gas.

Rates for the interstate natural gas transmission and storage operations at the Pipeline Companies, which include reservation, commodity, surcharges, fuel and gas lost and unaccounted for charges, are authorized by the FERC. In accordance with the FERC's rate-making principles, the Pipeline Companies' current maximum tariff rates are designed to recover prudently incurred costs included in their pipeline system's regulatory cost of service that are associated with the construction, operation and maintenance of their pipeline system and to afford the Pipeline Companies an opportunity to earn a reasonable rate of return. Nevertheless, the rates the FERC authorizes the Pipeline Companies to charge their customers may not be sufficient to recover the costs incurred to provide services in any given period. Moreover, from time to time, the FERC may change, alter or refine its policies or methodologies for establishing pipeline rates and terms and conditions of service. In addition, the FERC has the authority under Section 5 of the Natural Gas Act of 1938 ("NGA") to investigate whether a pipeline may be earning more than its allowed rate of return and, when appropriate, to institute proceedings against such pipeline to prospectively reduce rates. Any such proceedings, if instituted, could result in significantly adverse rate decreases.

Under FERC policy, interstate pipelines and their customers may execute contracts at negotiated rates, which may be above or below the maximum tariff rate for that service or the pipeline may agree to provide a discounted rate, which would be a rate between the maximum and minimum tariff rates. In a rate proceeding, rates in these contracts are generally not subject to adjustment. It is possible that the cost to perform services under negotiated or discounted rate contracts will exceed the cost used in the determination of the negotiated or discounted rates, which could result either in losses or lower rates of return for providing such services. Under certain circumstances, FERC policy allows interstate natural gas pipelines to design new
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maximum tariff rates to recover such costs in regulatory rate reviews. However, with respect to discounts granted to affiliates, the interstate natural gas pipeline must demonstrate that the discounted rate was necessary in order to meet competition.

GEMA Jurisdiction

The Northern Powergrid Distribution Companies, as Distribution Network Operators ("DNOs") and holders of electricity distribution licenses, are subject to regulation by GEMA. Most of the revenue of a DNO is controlled by a distribution price control formula set out in the electricity distribution license. The price control formula does not directly constrain profits from year-to-year, but is a control on revenue that operates independent of a significant portion of the DNO's actual costs. A resetting of the formula does not require the consent of the DNO, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's Competition and Markets Authority. GEMA is able to impose financial penalties on DNOs that contravene any of their electricity distribution license duties or certain of their duties under British law, or fail to achieve satisfactory performance of individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the DNO's revenue. During the term of any price control, additional costs have a direct impact on the financial results of the Northern Powergrid Distribution Companies.

AUC Jurisdiction

The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems.

The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of AltaLink's activities, including its tariffs, rates, construction, operations and financing. The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable and approval of the transmission tariff rates of regulated transmission providers by the AESO, which is the independent transmission system operator in Alberta that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulations and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.

In addition, AUC approval is required in connection with new energy and regulated utility initiatives in Alberta, amendments to existing approvals and financing proposals by designated utilities.

Physical or cyber attacks, both threatened and actual, could impact each Registrant's operations and could adversely affect its financial results.

Each Registrant relies on technology in virtually all aspects of its business. Like those of many large businesses, certain of the Registrant's technology systems have been subject to computer viruses, malicious codes, unauthorized access, phishing efforts, denial-of-service attacks and other cyber attacks and each Registrant expects to be subject to similar attacks in the future as such attacks become more sophisticated and frequent. A significant disruption or failure of its technology systems by physical or cyber attack could result in service interruptions, safety failures, security events, regulatory compliance failures, an inability to protect information and assets against unauthorized users, and other operational difficulties. Attacks perpetrated against each Registrant's systems could result in loss of assets and critical information and expose it to remediation costs and reputational damage.

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Although the Registrants have taken steps intended to mitigate these risks, a significant disruption or cyber intrusion could adversely affect each Registrant's financial results. Cyber attacks could further adversely affect each Registrant's ability to operate facilities, information technology and business systems, or compromise sensitive customer and employee information. In addition, physical or cyber attacks against key suppliers or service providers could have a similar effect on each Registrant. Additionally, if each Registrant is unable to acquire, develop, implement, adopt or protect rights around new technology, it may suffer a competitive disadvantage.

Each Registrant is actively pursuing, developing and constructing new or expanded facilities, the completion and expected costs of which are subject to significant risk, and each Registrant has significant funding needs related to its planned capital expenditures.

Each Registrant actively pursues, develops and constructs new or expanded facilities. Each Registrant expects to incur significant annual capital expenditures over the next several years. Such expenditures may include construction and other costs for new electricity generating facilities, electric transmission or distribution projects, environmental control and compliance systems, natural gas storage facilities, new or expanded pipeline systems, and continued maintenance and upgrades of existing assets.

Development and construction of major facilities are subject to substantial risks, including fluctuations in the price and availability of commodities, manufactured goods, equipment, and the imposition of tariffs thereon when sourced by foreign providers, labor, siting and permitting and changes in environmental and operational compliance matters, load forecasts and other items over a multi-year construction period, as well as counterparty risk and the economic viability of the Registrants' suppliers, customers and contractors. Certain of the Registrants' construction projects are substantially dependent upon a single supplier or contractor and replacement of such supplier or contractor may be difficult and cannot be assured. These risks may result in the inability to timely complete a project or higher than expected costs to complete an asset and place it in-service and, in extreme cases, the loss of the power purchase agreements or other long-term off-take contracts underlying such projects. Such costs may not be recoverable in the regulated rates or market or contract prices each Registrant is able to charge its customers. Delays in construction of renewable projects may result in delayed in-service dates which may result in the loss of anticipated revenue or income tax benefits. It is also possible that additional generation needs may be obtained through power purchase agreements, which could increase long-term purchase obligations and force reliance on the operating performance of a third party. The inability to successfully and timely complete a project, avoid unexpected costs or recover any such costs could adversely affect such Registrant's financial results.

Furthermore, each Registrant depends upon both internal and external sources of liquidity to provide working capital and to fund capital requirements. If BHE does not provide needed funding to its subsidiaries and the subsidiaries are unable to obtain funding from external sources, they may need to postpone or cancel planned capital expenditures.

A significant sustained decrease in demand for electricity or natural gas in the markets served by each Registrant would decrease its operating revenue, could impact its planned capital expenditures and could adversely affect its financial results.

A significant sustained decrease in demand for electricity or natural gas in the markets served by each Registrant would decrease its operating revenue, could impact its planned capital expenditures and could adversely affect its financial results. Factors that could lead to a decrease in market demand include, among others:
a depression, recession or other adverse economic condition that results in a lower level of economic activity or reduced spending by consumers on electricity or natural gas;
an increase in the market price of electricity or natural gas or a decrease in the price of other competing forms of energy;
shifts in competitively priced natural gas supply sources away from the sources connected to the Pipeline Companies' systems, including shale gas sources;
efforts by customers, legislators and regulators to reduce the consumption of electricity generated or distributed by each Registrant through various existing laws and regulations, as well as, deregulation, conservation, energy efficiency and private generation measures and programs;
laws mandating or encouraging renewable energy sources, which may decrease the demand for electricity and natural gas or change the market prices of these commodities;
higher fuel taxes or other governmental or regulatory actions that increase, directly or indirectly, the cost of natural gas or other fuel sources for electricity generation or that limit the use of natural gas or the generation of electricity from fossil fuels;
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a shift to more energy-efficient or alternative fuel machinery or an improvement in fuel economy, whether as a result of technological advances by manufacturers, legislation mandating higher fuel economy or lower emissions, price differentials, incentives or otherwise;
a reduction in the state or federal subsidies or tax incentives that are provided to agricultural, industrial or other customers, or a significant sustained change in prices for commodities such as ethanol or corn for ethanol manufacturers; and
sustained mild weather that reduces heating or cooling needs.

Each Registrant's operating results may fluctuate on a seasonal and quarterly basis and may be adversely affected by weather.

In most parts of the United States and other markets in which each Registrant operates, demand for electricity peaks during the summer months when irrigation and cooling needs are higher. Market prices for electricity also generally peak at that time. In other areas, including the western portion of PacifiCorp's service territory, demand for electricity peaks during the winter when heating needs are higher. In addition, demand for natural gas and other fuels generally peaks during the winter. This is especially true in MidAmerican Energy's and Sierra Pacific's retail natural gas businesses. Further, extreme weather conditions, such as heat waves, winter storms or floods could cause these seasonal fluctuations to be more pronounced. Periods of low rainfall or snowpack may negatively impact electricity generation at PacifiCorp's hydroelectric generating facilities, which may result in greater purchases of electricity from the wholesale market or from other sources at market prices. Additionally, PacifiCorp and MidAmerican Energy have added substantial wind-powered generating capacity, and BHE's unregulated subsidiaries are adding solar and wind-powered generating capacity, each of which is also a climate-dependent resource.

As a result, the overall financial results of each Registrant may fluctuate substantially on a seasonal and quarterly basis. Each Registrant has historically provided less service, and consequently earned less income, when weather conditions are mild. Unusually mild weather in the future may adversely affect each Registrant's financial results through lower revenue or margins. Conversely, unusually extreme weather conditions could increase each Registrant's costs to provide services and could adversely affect its financial results. The extent of fluctuation in each Registrant's financial results may change depending on a number of factors related to its regulatory environment and contractual agreements, including its ability to recover energy costs, the existence of revenue sharing provisions as it relates to MidAmerican Energy and Nevada Power, and terms of its wholesale sale contracts.

Each Registrant is subject to market risk associated with the wholesale energy markets, which could adversely affect its financial results.

In general, each Registrant's primary market risk is adverse fluctuations in the market price of wholesale electricity and fuel, including natural gas, coal and fuel oil, which is compounded by volumetric changes affecting the availability of or demand for electricity and fuel. The market price of wholesale electricity may be influenced by several factors, such as the adequacy or type of generating capacity, scheduled and unscheduled outages of generating facilities, prices and availability of fuel sources for generation, disruptions or constraints to transmission and distribution facilities, weather conditions, demand for electricity, economic growth and changes in technology. Volumetric changes are caused by fluctuations in generation or changes in customer needs that can be due to the weather, electricity and fuel prices, the economy, regulations or customer behavior. For example, the Utilities purchase electricity and fuel in the open market as part of their normal operating businesses. If market prices rise, especially in a time when larger than expected volumes must be purchased at market prices, the Utilities may incur significantly greater expense than anticipated. Likewise, if electricity market prices decline in a period when the Utilities are a net seller of electricity in the wholesale market, the Utilities could earn less revenue. Although the Utilities have ECAMs, the risks associated with changes in market prices may not be fully mitigated due to customer sharing bands as it relates to PacifiCorp and other factors.

Potential terrorist activities and the impact of military or other actions, could adversely affect each Registrant's financial results.

The ongoing threat of terrorism and the impact of military or other actions by nations or politically, ethnically or religiously motivated organizations regionally or globally may create increased political, economic, social and financial market instability, which could subject each Registrant's operations to increased risks. Additionally, the United States government has issued warnings that energy assets, specifically pipeline, nuclear generation, transmission and other electric utility infrastructure, are potential targets for terrorist attacks. Political, economic, social or financial market instability or damage to or interference with the operating assets of the Registrants, customers or suppliers may result in business interruptions, lost revenue, higher commodity prices, disruption in fuel supplies, lower energy consumption and unstable markets, particularly with respect to
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electricity and natural gas, and increased security, repair or other costs, any of which may materially adversely affect each Registrant in ways that cannot be predicted at this time. Any of these risks could materially affect its consolidated financial results. Furthermore, instability in the financial markets as a result of terrorism or war could also materially adversely affect each Registrant's ability to raise capital.

Certain Registrants are subject to the unique risks associated with nuclear generation.

The ownership and operation of nuclear power plants, such as MidAmerican Energy's 25% ownership interest in Quad Cities Station, involves certain risks. These risks include, among other items, mechanical or structural problems, inadequacy or lapses in maintenance protocols, the impairment of reactor operation and safety systems due to human error, the costs of storage, handling and disposal of nuclear materials, compliance with and changes in regulation of nuclear power plants, limitations on the amounts and types of insurance coverage commercially available, and uncertainties with respect to the technological and financial aspects of decommissioning nuclear facilities at the end of their useful lives. Additionally, Exelon Generation, the 75% owner and operator of the facility, may respond to the occurrence of any of these or other risks in a manner that negatively impacts MidAmerican Energy, including closure of Quad Cities Station prior to the expiration of its operating license. The prolonged unavailability, or early closure, of Quad Cities Station due to operational or economic factors could have a materially adverse effect on the relevant Registrant's financial results, particularly when the cost to produce power at the plant is significantly less than market wholesale prices. The following are among the more significant of these risks:
Operational Risk - Operations at any nuclear power plant could degrade to the point where the plant would have to be shut down. If such degradations were to occur, the process of identifying and correcting the causes of the operational downgrade to return the plant to operation could require significant time and expense, resulting in both lost revenue and increased fuel and purchased electricity costs to meet supply commitments. Rather than incurring substantial costs to restart the plant, the plant could be shut down. Furthermore, a shut-down or failure at any other nuclear power plant could cause regulators to require a shut-down or reduced availability at Quad Cities Station.
In addition, issues relating to the disposal of nuclear waste material, including the availability, unavailability and expense of a permanent repository for spent nuclear fuel could adversely impact operations as well as the cost and ability to decommission nuclear power plants, including Quad Cities Station, in the future.

Regulatory Risk - The NRC may modify, suspend or revoke licenses and impose civil penalties for failure to comply with applicable Atomic Energy Act regulations or the terms of the licenses of nuclear facilities. Unless extended, the NRC operating licenses for Quad Cities Station will expire in 2032. Changes in regulations by the NRC could require a substantial increase in capital expenditures or result in increased operating or decommissioning costs.

Nuclear Accident and Catastrophic Risks - Accidents and other unforeseen catastrophic events have occurred at nuclear facilities other than Quad Cities Station, both in the United States and elsewhere, such as at the Fukushima Daiichi nuclear power plant in Japan as a result of the earthquake and tsunami in March 2011. The consequences of an accident or catastrophic event can be severe and include loss of life and property damage. Any resulting liability from a nuclear accident or catastrophic event could exceed the relevant Registrant's resources, including insurance coverage.

Certain of BHE's subsidiaries are subject to the risk that customers will not renew their contracts or that BHE's subsidiaries will be unable to obtain new customers for expanded capacity, each of which could adversely affect its financial results.

If BHE's subsidiaries are unable to renew, remarket, or find replacements for their customer agreements on favorable terms, BHE's subsidiaries' sales volumes and operating revenue would be exposed to reduction and increased volatility. For example, without the benefit of long-term transportation agreements, BHE cannot assure that the Pipeline Companies will be able to transport natural gas at efficient capacity levels. Substantially all of the Pipeline Companies' revenues are generated under transportation, storage and LNG contracts that periodically must be renegotiated and extended or replaced, and the Pipeline Companies are dependent upon relatively few customers for a substantial portion of their revenue. Similarly, without long-term power purchase agreements, BHE cannot assure that its unregulated power generators will be able to operate profitably. Failure to maintain existing long-term agreements or secure new long-term agreements, or being required to discount rates significantly upon renewal or replacement, could adversely affect BHE's consolidated financial results. The replacement of any existing long-term agreements depends on market conditions and other factors that may be beyond BHE's subsidiaries' control.

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Each Registrant is subject to counterparty risk, which could adversely affect its financial results.

Each Registrant is subject to counterparty credit risk related to contractual payment obligations with wholesale suppliers and customers. Adverse economic conditions or other events affecting counterparties with whom each Registrant conducts business could impair the ability of these counterparties to meet their payment obligations. Each Registrant depends on these counterparties to remit payments on a timely basis. Each Registrant continues to monitor the creditworthiness of its wholesale suppliers and customers in an attempt to reduce the impact of any potential counterparty default. If strategies used to minimize these risk exposures are ineffective or if any Registrant's wholesale suppliers' or customers' financial condition deteriorates or they otherwise become unable to pay, it could have a significant adverse impact on each Registrant's liquidity and its financial results.

Each Registrant is subject to counterparty performance risk related to performance of contractual obligations by wholesale suppliers, customers and contractors. Each Registrant relies on wholesale suppliers to deliver commodities, primarily natural gas, coal and electricity, in accordance with short- and long-term contracts. Failure or delay by suppliers to provide these commodities pursuant to existing contracts could disrupt the delivery of electricity and require the Utilities to incur additional expenses to meet customer needs. In addition, when these contracts terminate, the Utilities may be unable to purchase the commodities on terms equivalent to the terms of current contracts.

Each Registrant relies on wholesale customers to take delivery of the energy they have committed to purchase. Failure of customers to take delivery may require the relevant Registrant to find other customers to take the energy at lower prices than the original customers committed to pay. If each Registrant's wholesale customers are unable to fulfill their obligations, there may be a significant adverse impact on its financial results.

The Northern Powergrid Distribution Companies' customers are concentrated in a small number of electricity supply businesses with RWE Npower PLC and British Gas Trading Limited accounting for approximately 15% and 12%, respectively, of distribution revenue in 2020. AltaLink's primary source of operating revenue is the AESO. Generally, a single customer purchases the energy from BHE's independent power projects in the United States and the Philippines pursuant to long-term power purchase agreements. For example, certain of BHE Renewables' solar and wind independent power projects sell all of their electrical production to either Pacific Gas and Electric Company or Southern California Edison Company, respectively. Any material payment or other performance failure by the counterparties in these arrangements could have a significant adverse impact on BHE's consolidated financial results.

BHE owns investments and projects in foreign countries that are exposed to risks related to fluctuations in foreign currency exchange rates and increased economic, regulatory and political risks.

BHE's business operations and investments outside the United States increase its risk related to fluctuations in foreign currency exchange rates, primarily the British pound and the Canadian dollar. BHE's principal reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from its foreign operations changes with the fluctuations of the currency in which they transact. BHE indirectly owns a hydroelectric power plant in the Philippines and may acquire significant energy-related investments and projects outside of the United States. BHE may selectively reduce some foreign currency exchange rate risk by, among other things, requiring contracted amounts be settled in, or indexed to, United States dollars or a currency freely convertible into United States dollars, or hedging through foreign currency derivatives. These efforts, however, may not be effective and could negatively affect BHE's consolidated financial results.

In addition to any disruption in the global financial markets, the economic, regulatory and political conditions in some of the countries where BHE has operations or is pursuing investment opportunities may present increased risks related to, among others, inflation, foreign currency exchange rate fluctuations, currency repatriation restrictions, nationalization, renegotiation, privatization, availability of financing on suitable terms, customer creditworthiness, construction delays, business interruption, political instability, civil unrest, guerilla activity, terrorism, pandemics (including potentially in relation to COVID-19), expropriation, trade sanctions, contract nullification and changes in law, regulations or tax policy. BHE may not choose to or be capable of either fully insuring against or effectively hedging these risks.

Poor performance of plan and fund investments and other factors impacting the pension and other postretirement benefit plans and nuclear decommissioning and mine reclamation trust funds could unfavorably impact each Registrant's cash flows, liquidity and financial results.

Costs of providing each Registrant's defined benefit pension and other postretirement benefit plans and costs associated with the joint trustee plan to which PacifiCorp contributes depend upon a number of factors, including the rates of return on plan assets,
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the level and nature of benefits provided, discount rates, mortality assumptions, the interest rates used to measure required minimum funding levels, the funded status of the plans, changes in benefit design, tax deductibility and funding limits, changes in laws and government regulation and each Registrant's required or voluntary contributions made to the plans. Furthermore, the timing of recognition of unrecognized gains and losses associated with the Registrants' defined benefit pension plans is subject to volatility due to events that may give rise to settlement accounting. Settlement events resulting from lump sum distributions offered by certain of the Registrants' defined benefit pension plans are influenced by the interest rates used to discount a participant's lump sum distribution. When the applicable interest rates are low, lump sum distributions in a given year tend to increase resulting in a higher likelihood of triggering settlement accounting.

Certain of the Registrant's pension and other postretirement benefit plans are in underfunded positions. Each Registrant may be required to make cash contributions to fund these plans in the future. Additionally, each Registrant's plans have investments in domestic and foreign equity and debt securities and other investments that are subject to loss. Losses from investments could add to the volatility, size and timing of future contributions.

Furthermore, the funded status of the UMWA 1974 Pension Plan multiemployer plan to which PacifiCorp's subsidiary previously contributed is considered critical and declining. PacifiCorp's subsidiary involuntarily withdrew from the UMWA 1974 Pension Plan in June 2015 when the UMWA employees ceased performing work for the subsidiary. PacifiCorp has recorded its best estimate of the withdrawal obligation.

In addition, MidAmerican Energy is required to fund over time the projected costs of decommissioning Quad Cities Station, a nuclear power plant, and Bridger Coal Company, a joint venture of PacifiCorp's subsidiary, Pacific Minerals, Inc., is required to fund projected mine reclamation costs. The funds that MidAmerican Energy has invested in a nuclear decommissioning trust and a subsidiary of PacifiCorp has invested in a mine reclamation trust are invested in debt and equity securities and poor performance of these investments will reduce the amount of funds available for their intended purpose, which could require MidAmerican Energy or PacifiCorp's subsidiary to make additional cash contributions. As contributions to the trust are being made over the operating life of the respective facility, reductions in the expected operating life of the facility could also require MidAmerican Energy and PacifiCorp's subsidiary to make additional contributions to the related trust. Such cash funding obligations, which are also impacted by the other factors described above, could have a material impact on MidAmerican Energy's or PacifiCorp's liquidity by reducing their available cash.

Inflation and changes in commodity prices and fuel transportation costs may adversely affect each Registrant's financial results.

Inflation and increases in commodity prices and fuel transportation costs may affect each Registrant by increasing both operating and capital costs. As a result of existing rate agreements, contractual arrangements or competitive price pressures, each Registrant may not be able to pass the costs of inflation on to its customers. If each Registrant is unable to manage cost increases or pass them on to its customers, its financial results could be adversely affected.

Cyclical fluctuations and competition in the residential real estate brokerage and mortgage businesses could adversely affect HomeServices.

The residential real estate brokerage and mortgage industries tend to experience cycles of greater and lesser activity and profitability and are typically affected by changes in economic conditions, which are beyond HomeServices' control. Any of the following, among others, are examples of items that could have a material adverse effect on HomeServices' businesses by causing a general decline in the number of home sales, sale prices or the number of home financings which, in turn, would adversely affect its financial results:
rising interest rates or unemployment rates, including a sustained high unemployment rate in the United States;
periods of economic slowdown or recession in the markets served or the adverse effects on market actions as a result of the actual or potential spread of COVID-19;
decreasing home affordability;
lack of available mortgage credit for potential homebuyers, such as the reduced availability of credit, which may continue into future periods;
inadequate home inventory levels;
sources of new competition; and
changes in applicable tax law.
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Disruptions in the financial markets could affect each Registrant's ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on each Registrant.

Disruptions in the financial markets could affect each Registrant's ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on each Registrant. Significant dislocations and liquidity disruptions in the United States, Great Britain, Canada and global credit markets, such as those that occurred in 2008 and 2009, may materially impact liquidity in the bank and debt capital markets, making financing terms less attractive for borrowers that are able to find financing and, in other cases, may cause certain types of debt financing, or any financing, to be unavailable. Additionally, economic uncertainty in the United States or globally may adversely affect the United States' credit markets and could negatively impact each Registrant's ability to access funds on favorable terms or at all. If a Registrant is unable to access the bank and debt markets to meet liquidity and capital expenditure needs, it may adversely affect the timing and amount of its capital expenditures, acquisition financing and its financial results.

Potential changes in accounting standards may impact each Registrant's financial results and disclosures in the future, which may change the way analysts measure each Registrant's business or financial performance.

The Financial Accounting Standards Board ("FASB") and the SEC continuously make changes to accounting standards and disclosure and other financial reporting requirements. New or revised accounting standards and requirements issued by the FASB or the SEC or new accounting orders issued by the FERC could significantly impact each Registrant's financial results and disclosures. For example, beginning in 2018 all changes in the fair values of equity securities (whether realized or unrealized) are recognized as gains or losses in the relevant Registrant's financial statements. Accordingly, periodic changes in such Registrant's reported net income will likely be subject to significant variability.

Each Registrant is involved in a variety of legal proceedings, the outcomes of which are uncertain and could adversely affect its financial results.

Each Registrant is, and in the future may become, a party to a variety of legal proceedings. Litigation is subject to many uncertainties, and the Registrants cannot predict the outcome of individual matters with certainty. It is possible that the final resolution of some of the matters in which each Registrant is involved could result in additional material payments substantially in excess of established liabilities or in terms that could require each Registrant to change business practices and procedures or divest ownership of assets. Further, litigation could result in the imposition of financial penalties or injunctions and adverse regulatory consequences, any of which could limit each Registrant's ability to take certain desired actions or the denial of needed permits, licenses or regulatory authority to conduct its business, including the siting or permitting of facilities. Any of these outcomes could have a material adverse effect on such Registrant's financial results.

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Item 1B.Unresolved Staff Comments

Not applicable.

Item 2.Properties

Each Registrant's energy properties consist of the physical assets necessary to support its electricity and natural gas businesses. Properties of the relevant Registrant's electricity businesses include electric generation, transmission and distribution facilities, as well as coal mining assets that support certain of PacifiCorp's electric generating facilities. Properties of the relevant Registrant's natural gas businesses include natural gas distribution facilities, interstate pipelines, storage facilities, liquefied natural gas facilities, compressor stations and meter stations. The transmission and distribution assets are primarily within each Registrant's service territories. In addition to these physical assets, the Registrants have rights-of-way, mineral rights and water rights that enable each Registrant to utilize its facilities. It is the opinion of each Registrant's management that the principal depreciable properties owned by it are in good operating condition and are well maintained. Pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties, MidAmerican Energy's electric utility properties in the state of Iowa, Nevada Power's and Sierra Pacific's properties in the state of Nevada, AltaLink's transmission properties and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of generation projects are pledged or encumbered to support or otherwise provide the security for the related subsidiary debt. For additional information regarding each Registrant's energy properties, refer to Item 1 of this Form 10-K and Notes 4, 5 and 22 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of Nevada Power in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of Sierra Pacific in Item 8 of this Form 10-K and Notes 4 and 5 of the Notes to Consolidated Financial Statements of Eastern Energy Gas in Item 8 of this Form 10-K.

The following table summarizes Berkshire Hathaway Energy's operating electric generating facilities as of December 31, 2020:
Facility NetNet Owned
EnergyCapacityCapacity
SourceEntityLocation by Significance(MWs)(MWs)
Natural gasPacifiCorp, MidAmerican Energy, NV Energy and BHE RenewablesNevada, Utah, Iowa, Illinois, Washington, Wyoming, Oregon, Texas, New York and Arizona11,17110,892
WindPacifiCorp, MidAmerican Energy and BHE RenewablesIowa, Wyoming, Texas, Nebraska, Washington, California, Illinois, Oregon, Kansas and Montana10,30210,302
CoalPacifiCorp, MidAmerican Energy and NV EnergyWyoming, Iowa, Utah, Nevada, Colorado and Montana13,2498,198
SolarBHE Renewables and NV EnergyCalifornia, Texas, Arizona, Minnesota and Nevada1,6991,551
HydroelectricPacifiCorp, MidAmerican Energy and BHE RenewablesWashington, Oregon, The Philippines, Idaho, California, Utah, Hawaii, Montana, Illinois and Wyoming1,2991,277
NuclearMidAmerican EnergyIllinois1,815454
GeothermalPacifiCorp and BHE RenewablesCalifornia and Utah377377
Total39,91233,051

Additionally, as of December 31, 2020 the Company has electric generating facilities that are under construction in Iowa, Wyoming and Montana having total Facility Net Capacity and Net Owned Capacity of 603 MWs.

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The right to construct and operate each Registrant's electric transmission and distribution facilities and interstate natural gas pipelines across certain property was obtained in most circumstances through negotiations and, where necessary, through prescription, eminent domain or similar rights. PacifiCorp, MidAmerican Energy, Nevada Power, Sierra Pacific, BHE GT&S, Northern Natural Gas and Kern River in the United States; Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc in Great Britain; and AltaLink in Alberta, Canada continue to have the power of eminent domain or similar rights in each of the jurisdictions in which they operate their respective facilities, but the United States and Canadian utilities do not have the power of eminent domain with respect to governmental, Native American or Canadian First Nations' tribal lands. Although the main Kern River pipeline crosses the Moapa Indian Reservation, all facilities in the Moapa Indian Reservation are located within a utility corridor that is reserved to the United States Department of Interior, Bureau of Land Management.

With respect to real property, each of the electric transmission and distribution facilities and interstate natural gas pipelines fall into two basic categories: (1) parcels that are owned in fee, such as certain of the electric generating facilities, electric substations, natural gas compressor stations, natural gas meter stations and office sites; and (2) parcels where the interest derives from leases, easements (including prescriptive easements), rights-of-way, permits or licenses from landowners or governmental authorities permitting the use of such land for the construction, operation and maintenance of the electric transmission and distribution facilities and interstate natural gas pipelines. Each Registrant believes it has satisfactory title or interest to all of the real property making up their respective facilities in all material respects.

Item 3.Legal Proceedings

PacifiCorp

On September 30, 2020, a putative class action complaint against PacifiCorp was filed, captioned Jeanyne James et. al. vs. PacifiCorp, Case No. 20cv33885, Circuit Court, Multnomah County, Oregon. The complaint was filed on behalf of certain named Oregon residents and businesses and all Oregon citizens and entities whose real or personal property was harmed by wildfires in Oregon beginning on or after September 7, 2020. The complaint alleges that PacifiCorp's assets contributed to the Oregon wildfires occurring on or after September 7, 2020 and that PacifiCorp acted with gross negligence, among other things. The complaint was amended November 2, 2020 to seek the following damages: (i) damages for real and personal property and other economic losses in excess of $600 million; (ii) double the amount of property and economic damages based on alleged gross negligence; (iii) treble damages for specific costs associated with loss of timber, trees and shrubbery; (iv) double the damages for the costs of litigation and reforestation; and (v) prejudgment interest. The plaintiffs demand a trial by jury and have reserved their right to amend the complaint to allege claims for punitive damages. Other individual lawsuits alleging similar claims have been filed in Oregon related to the 2020 wildfires. Investigations as to the cause and origin of the wildfires are ongoing.

For more information regarding certain legal proceedings affecting PacifiCorp, refer to Note 14 of the Notes to Consolidated Financial Statements of PacifiCorp in Part II, Item 8 of this Form 10-K.

Item 4.Mine Safety Disclosures

Information regarding Berkshire Hathaway Energy's and PacifiCorp's mine safety violations and other legal matters disclosed in accordance with Section 1503(a) of the Dodd-Frank Reform Act is included in Exhibit 95 to this Form 10-K.

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PART II

Item 5.Market for Registrant's Common Equity, Method InvestmentsRelated Stockholder Matters and Issuer Purchases of Equity Securities


BERKSHIRE HATHAWAY ENERGY

BHE's common stock is beneficially owned by Berkshire Hathaway, Mr. Walter Scott, Jr., a member of BHE's Board of Directors (along with his family members and related or affiliated entities) and Mr. Gregory E. Abel, BHE's Chairman, and has not been registered with the SEC pursuant to the Securities Act of 1933, as amended, listed on a stock exchange or otherwise publicly held or traded. BHE has not declared or paid any cash dividends to its common shareholders since Berkshire Hathaway acquired an equity ownership interest in BHE in March 2000 and does not presently anticipate that it will declare any dividends on its common stock in the foreseeable future.

PACIFICORP

All common stock of PacifiCorp is held by its parent company, PPW Holdings LLC, which is a direct, wholly owned subsidiary of BHE. PacifiCorp declared and paid dividends to PPW Holdings LLC of $— million in 2020 and $175 million in 2019.

MIDAMERICAN FUNDING AND MIDAMERICAN ENERGY

All common stock of MidAmerican Energy is held by its parent company, MHC, which is a direct, wholly owned subsidiary of MidAmerican Funding. MidAmerican Funding is an Iowa limited liability company whose membership interest is held solely by BHE. Neither MidAmerican Funding nor MidAmerican Energy declared or paid any cash distributions or dividends to its sole member or shareholder in 2020 and 2019.

NEVADA POWER

All common stock of Nevada Power is held by its parent company, NV Energy, which is an indirect, wholly owned subsidiary of BHE. Nevada Power declared and paid dividends to NV Energy of $155 million in 2020 and $371 million in 2019.

SIERRA PACIFIC

All common stock of Sierra Pacific is held by its parent company, NV Energy, which is an indirect, wholly owned subsidiary of BHE. Sierra Pacific declared and paid dividends to NV Energy of $20 million in 2020 and $46 million in 2019.

EASTERN ENERGY GAS

Eastern Energy Gas is a Virginia limited liability corporation whose membership interest is held solely by its parent company, BHE GT&S, which is an indirect, wholly owned subsidiary of BHE. Eastern Energy Gas did not declare or pay cash distributions to BHE GT&S in 2020. Eastern Energy Gas declared and paid cash distributions to DEI of $4.3 billion in 2020 and $457 million in 2019.
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Item 6.Selected Financial Data
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries

Item 7A.Quantitative and Qualitative Disclosures About Market Risk
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries

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Item 8.Financial Statements and Supplementary Data
Berkshire Hathaway Energy Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
PacifiCorp and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Shareholders' Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
MidAmerican Energy Company
Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations
Statements of Changes in Shareholder's Equity
Statements of Cash Flows
Notes to Financial Statements
MidAmerican Funding, LLC and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Member's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Nevada Power Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Shareholder's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Sierra Pacific Power Company
Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations
Statements of Changes in Shareholder's Equity
Statements of Cash Flows
Notes to Financial Statements
Eastern Energy Gas Holdings, LLC and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
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Berkshire Hathaway Energy Company and its subsidiaries
Consolidated Financial Section
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Item 6.Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of the Company during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with the Company's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. The Company's actual results in the future could differ significantly from the historical results.

The reportable segment financial information includes all necessary adjustments and eliminations needed to conform to the Company's significant accounting policies. The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, corporate functions and intersegment eliminations.

Results of Operations

Overview

Net income and operating revenue for the Company's reportable segments for the years ended December 31 are summarized as follows (in millions):

20202019Change20192018Change
Operating revenue:
PacifiCorp$5,341 $5,068 $273 %$5,068 $5,026 $42 %
MidAmerican Funding2,728 2,927 (199)(7)2,927 3,053 (126)(4)
NV Energy2,854 3,037 (183)(6)3,037 3,039 (2)— 
Northern Powergrid1,022 1,013 1,013 1,020 (7)(1)
BHE Pipeline Group1,578 1,131 447 40 1,131 1,203 (72)(6)
BHE Transmission659 707 (48)(7)707 710 (3)— 
BHE Renewables936 932 — 932 908 24 
HomeServices5,396 4,473 923 21 4,473 4,214 259 
BHE and Other438 556 (118)(21)556 614 (58)(9)
Total operating revenue$20,952 $19,844 $1,108 %$19,844 $19,787 $57 — %
Net income attributable to BHE shareholders:
PacifiCorp$741 $773 $(32)(4)%$773 $739 $34 %
MidAmerican Funding818 781 37 781 669 112 17 
NV Energy410 365 45 12 365 317 48 15 
Northern Powergrid201 256 (55)(21)256 239 17 
BHE Pipeline Group528 422 106 25 422 387 35 
BHE Transmission231 229 229 210 19 
BHE Renewables(1)
521 431 90 21 431 329 102 31 
HomeServices375 160 215 *160 145 15 10 
BHE and Other3,118 (467)3,585 *(467)(467)— — 
Total net income attributable to BHE shareholders$6,943 $2,950 $3,993 *$2,950 $2,568 $382 15 %

(1)Includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

*    Not meaningful.
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Net income attributable to BHE shareholders increased $3,993 million for 2020 compared to 2019. Included in these results was a pre-tax unrealized gain of $4,774 million ($3,470 million after-tax) compared to a pre-tax unrealized loss in 2019 of $313 million ($227 million after-tax) on the Company's investment in BYD Company Limited. Excluding the impact of this item, adjusted net income attributable to BHE shareholders in 2020 was $3,473 million, an increase of $296 million, or 9%, compared to adjusted net income attributable to BHE shareholders in 2019 of $3,177 million.

The increase in net income attributable to BHE shareholders for 2020 compared to 2019 was primarily due to:

$50 million higher net income at the Utilities with favorable performance at all four utilities (actual retail customer sales volumes increased 74 GWhs, or 0.1%), including $193 million of higher PTCs recognized, offset by a comparative increase in wildfire and other storm restoration costs, primarily at PacifiCorp;
$106 million higher net income at BHE Pipeline Group, primarily due to $73 million of incremental net income from the GT&S Transaction and a favorable rate case settlement at Northern Natural Gas;
$55 million lower net income at Northern Powergrid, mainly due to a deferred income tax charge in 2020 from a change in the United Kingdom corporate income tax rate;
$90 million higher net income at BHE Renewables, primarily due to increased income tax benefits from renewable wind tax equity investments, largely from projects reaching commercial operation, offset by lower earnings from geothermal and natural gas facilities;
$215 million higher net income at HomeServices, primarily due to higher earnings from mortgage services (71% increase in funded mortgage volume) and brokerage services (13% increase in closed transaction volume) largely attributable to the favorable interest rate environment; and
$3,585 higher net income at BHE and Other due to the $3,697 million change in the after-tax unrealized position of the Company's investment in BYD Company Limited offset by higher BHE corporate interest expense and unfavorable comparative consolidated state income tax benefits.
Net income attributable to BHE shareholders increased $382 million for 2019 compared to 2018. Included in these results were pre-tax unrealized losses on the Company's investment in BYD Company Limited ($313 million, $227 million after-tax, in 2019 and $526 million, $383 million after-tax, in 2018) and a $134 million income tax benefit in 2018 related to the accrued repatriation tax on undistributed foreign earnings as a result of 2017 Tax Reform. Excluding the impacts of these items, adjusted net income attributable to BHE shareholders in 2019 was $3,177 million, an increase of $360 million, or 13%, compared to adjusted net income attributable to BHE shareholders in 2018 of $2,817 million.

The increase in net income attributable to BHE shareholders for 2019 compared to 2018 was primarily due to:

$194 million higher net income at the Utilities with favorable performance at all four utilities (actual retail customer sales volumes increased 74 GWhs, or 0.1%), including $49 million of higher PTCs recognized;
$35 million higher net income at BHE Pipeline Group, primarily due to higher transportation revenue; and
$102 million higher net income at BHE Renewables, primarily due to improved earnings from renewable wind projects, including increased income tax benefits from renewable wind tax equity investments largely from projects reaching commercial operation, and higher earnings from geothermal and natural gas facilities.
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Reportable Segment Results

PacifiCorp

Operating revenue increased $273 million for 2020 compared to 2019 due to higher retail revenue of $250 million and higher wholesale and other revenue of $23 million. Retail revenue increased primarily due to $234 million from the amortization of certain existing regulatory balances to offset the accelerated depreciation of certain property, plant and equipment and the accelerated amortization of certain regulatory asset balances in relation to Utah and Oregon general rate case orders issued in December 2020. The increase in retail revenue was also due to price impacts of $49 million from changes in sales mix, partially offset by lower customer volumes of $34 million. The increase in wholesale and other revenue was mainly due to $34 million from the amortization of certain existing regulatory balances in Oregon to offset the accelerated depreciation of certain retired wind equipment, partially offset by lower wholesale volumes. Retail customer volumes decreased 1.4% primarily due to the impacts of COVID-19, which resulted in lower industrial and commercial customer usage and higher residential customer usage, partially offset by an increase in the average number of residential and commercial customers and the favorable impact of weather.

Net income decreased $32 million for 2020 compared to 2019, primarily due to an increase in operations and maintenance expense due to higher costs associated with wildfires and the Klamath Hydroelectric Settlement Agreement of $169 million, higher interest expense of $25 million from higher long-term debt balances, higher pension and other postretirement costs of $13 million, lower interest income from lower average interest rates and higher property taxes of $10 million, partially offset by lower tax expense from higher PTCs recognized of $62 million from repowered and new wind-powered generating facilities, higher utility margin of $47 million and higher allowances for equity and borrowed funds used during construction of $38 million. Utility margin increased primarily due to lower coal-fueled and natural gas-fueled generation costs, lower purchased power costs and price impacts from changes in sales mix, partially offset by lower net deferrals of incurred net power costs in accordance with established adjustment mechanisms and lower retail customer volumes.

Operating revenue increased $42 million for 2019 compared to 2018 due to higher retail revenue of $40 million and higher wholesale and other revenue of $2 million. Retail revenue increased primarily due to higher customer volumes of $31 million and higher average retail rates of $9 million. Retail customer volumes increased 0.4% primarily due to an increase in the average number of residential and commercial customers and the favorable impact of weather, partially offset by lower customer usage. Wholesale and other revenue increased primarily due to higher wholesale average market prices, largely offset by lower wholesale volumes.

Net income increased $34 million for 2019 compared to 2018, primarily due to higher allowances for equity and borrowed funds used during construction of $55 million, lower pension and post retirement expense of $11 million and higher utility margin of $4 million, partially offset by higher depreciation and amortization expense of $25 million from additional plant placed in-service, lower PTCs of $21 million from expirations, higher interest expense of $17 million and higher operations and maintenance expense of $10 million, primarily due to costs associated with the early retirement of a coal-fueled generation unit totaling $24 million offset by a decrease in wildfire suppression costs of $9 million. Utility margin increased primarily due to lower coal-fueled generation costs, higher wholesale average market prices, higher retail revenue primarily due to favorable customer volumes and higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms, partially offset by lower wholesale volumes, higher purchased electricity costs, higher natural gas-fueled generation costs and lower net wheeling revenue.


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MidAmerican Funding

Operating revenue decreased $199 million for 2020 compared to 2019, primarily due to lower natural gas operating revenue of $77 million, lower electric operating revenue of $70 million, lower electric and natural gas energy efficiency program revenue of $38 million (offset in operations and maintenance expense) and lower other revenue of $14 million, primarily from nonregulated utility construction services. Natural gas operating revenue decreased primarily due to lower volumes and a lower average per-unit cost of natural gas sold resulting in lower purchased gas adjustment recoveries of $68 million (offset in cost of sales) and a 10.2% decrease in retail customer volumes, primarily due to the unfavorable impact of weather. Electric operating revenue decreased due to lower wholesale and other revenue of $88 million, partially offset by higher retail revenue of $18 million. Electric wholesale and other revenue decreased mainly due to lower average wholesale per-unit prices of $115 million, partially offset by higher wholesale volumes of $28 million. Electric retail revenue increased primarily due to higher customer usage of $38 million, partially offset by price impacts of $18 million from changes in sales mix. Electric retail customer volumes increased 1.2% due to increased usage for certain industrial customers, partially offset by the impacts of COVID-19, which resulted in lower commercial and industrial customer usage and higher residential customer usage.

Net income increased $37 million for 2020 compared to 2019, primarily due to higher income tax benefit of $197 million from higher PTCs recognized of $132 million and the favorable impacts of ratemaking, partially offset by higher depreciation and amortization expense of $77 million due to additional assets placed in-service (offset by $23 million of lower Iowa revenue sharing accruals), lower allowances for equity and borrowed funds used during construction of $45 million, higher interest expense of $20 million and lower electric and natural gas utility margins. PTCs recognized increased due to higher wind-powered generation driven primarily by repowering and new wind projects placed in-service. Electric utility margin decreased due to lower wholesale revenue and the price impacts from changes in sales mix, partially offset by lower generation costs from higher wind generation and higher retail customer volumes. Natural gas utility margin decreased primarily due to lower retail customer volumes primarily due to the unfavorable impact of weather.

Operating revenue decreased $126 million for 2019 compared to 2018, primarily due to lower electric and natural gas energy efficiency program revenue of $76 million (offset in operations and maintenance expense) and lower natural gas operating revenue of $66 million, partially offset by higher other operating revenue of $13 million, primarily from nonregulated utility construction services, and higher electric operating revenue of $3 million. Electric operating revenue increased due to higher retail revenue of $77 million, partially offset by lower wholesale and other revenue of $74 million. Electric retail revenue increased due to higher customer usage of $76 million and higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax expense), primarily the energy adjustment clause, partially offset by lower average rates of $54 million due to sales mix and $19 million from the unfavorable impact of weather. Electric retail customer volumes increased 1.4% as an increase in industrial volumes of 4.0% was largely offset by lower residential volumes from the unfavorable impact of weather and lower customer usage. Electric wholesale and other revenue decreased due to 10.6% lower sales volumes and $35 million from lower average per-unit prices. Natural gas operating revenue decreased from lower recoveries through the purchased gas adjustment clause due to a lower average per-unit cost of natural gas sold totaling $69 million (offset in cost of sales), partially offset by an increase in retail sales volumes of 2.0% from the favorable impact of weather in 2019.

Net income increased $112 million for 2019 compared to 2018, primarily due to higher income tax benefit of $115 million, largely due to higher PTCs of $70 million and the favorable impacts of ratemaking, higher electric utility margin, higher allowances for equity and borrowed funds of $32 million and higher investment earnings, partially offset by higher interest expense of $55 million and higher depreciation and amortization expense of $30 million due to additional assets placed in-service offset by $46 million of lower Iowa revenue sharing accruals. Electric utility margin increased due to lower generation costs from higher wind generation, higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax expense) and higher retail customer volumes.


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NV Energy

Operating revenue decreased $183 million for 2020 compared to 2019, primarily due to lower electric operating revenue. Electric operating revenue decreased primarily due to lower fully-bundled energy rates (offset in cost of sales) of $164 million and a $120 million one-time bill credit given to customers in the fourth quarter of 2020 resulting from a regulatory rate review decision (offset in operations and maintenance and income tax expenses), partially offset by higher retail customer volumes, price impacts from changes in sales mix and a favorable regulatory decision. Electric retail customer volumes, including distribution only service customers, increased 1.5%, primarily due to the favorable impact of weather, largely offset by the impacts of COVID-19, which resulted in lower industrial, distribution only service and commercial customer usage and higher residential customer usage.

Net income increased $45 million for 2020 compared to 2019, primarily due to higher electric utility margin of $100 million, lower pension and post-retirement costs of $9 million and lower income tax expense mainly from the favorable impacts of ratemaking, partially offset by an increase in operations and maintenance expense, mainly from higher earnings sharing accruals at the Nevada Utilities, and higher depreciation and amortization expense of $20 million, mainly from higher plant placed in-service. Electric utility margin increased primarily due to higher retail customer volumes, price impacts from changes in sales mix and a favorable regulatory decision.

Operating revenue decreased $2 million for 2019 compared to 2018, primarily due to lower electric operating revenue of $17 million, partially offset by higher natural gas operating revenue of $15 million. Electric operating revenue decreased due to lower retail revenue of $32 million, partially offset by higher wholesale and other revenue of $15 million. Electric retail revenue decreased primarily due to lower retail customer volumes of $50 million and a decrease from a tax rate reduction rider effective April 2018 of $17 million, partially offset by higher fully-bundled energy rates (offset in cost of sales) of $31 million and an increase in the average number of customers of $9 million. Electric retail customer volumes decreased 1.4% primarily due to the impacts of weather, net of increased distribution only service customer volumes. Natural gas operating revenue increased due to a higher average per-unit price (offset in cost of sales) of $13 million and higher volumes from the impacts of weather.

Net income increased $48 million for 2019 compared to 2018, primarily due to lower operations and maintenance expense, largely due to lower political activity expenses and lower earnings sharing accruals of $23 million at Nevada Power, partially offset by lower electric utility margin of $58 million and higher depreciation and amortization expense. Electric utility margin decreased due to lower retail customer volumes and lower average retail rates from a tax rate reduction rider, partially offset by an increase in the average number of customers and higher wholesale and transmission revenue.

Northern Powergrid

Operating revenue increased $9 million for 2020 compared to 2019, primarily due to higher distribution revenue of $10 million from increased tariff rates of $40 million, partially offset by 5.4% lower units distributed of $30 million largely due to the impacts of COVID-19. Net income decreased $55 million for 2020 compared to 2019, primarily due to write-offs of gas exploration costs of $44 million, higher income tax expense of $37 million and higher distribution-related operating and depreciation expenses of $18 million, partially offset by the higher distribution revenue, lower overall pension expense of $22 million, including lower pension settlement losses recognized in 2020 compared to 2019, and lower interest expense of $9 million. The increase in income tax expense is due to a change in the United Kingdom corporate income tax rate that resulted in a deferred income tax charge of $35 million.

Operating revenue decreased $7 million for 2019 compared to 2018, primarily due to the stronger United States dollar of $45 million and lower distributed units of $21 million, partially offset by higher distribution tariff rates of $39 million and higher smart meter revenue of $15 million due to a larger number of units installed. Net income increased $17 million for 2019 compared to 2018, primarily due to lower overall pension expense of $23 million, largely resulting from lower pension settlement losses recognized in 2019 compared to 2018, and the higher distribution revenues, partially offset by higher distribution-related operating and depreciation expenses of $13 million and the stronger United States dollar of $10 million.


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BHE Pipeline Group

Operating revenue increased $447 million for 2020 compared to 2019 due to $331 million of incremental revenue from the GT&S Transaction, a favorable rate case settlement at Northern Natural Gas of $101 million and higher transportation revenue of $43 million, partially offset by lower gas sales at Northern Natural Gas of $23 million related to system balancing activities (largely offset in cost of sales). Net income increased $106 million for 2020 compared to 2019, primarily due to $73 million of incremental net income from the GT&S Transaction, the higher transportation revenue, and a favorable after-tax, rate case settlement at Northern Natural Gas of $32 million, partially offset by higher property and other tax expense of $17 million, including a non-recurring property tax refund in 2019, higher depreciation and amortization expense of $13 million due to increased spending on capital projects and lower interest income of $9 million.

Operating revenue decreased $72 million for 2019 compared to 2018 due to lower gas sales of $89 million at Northern Natural Gas related to system balancing activities (largely offset in cost of sales), partially offset by higher transportation revenue of $19 million. Transportation revenue increased from generally higher volumes and rates, partially offset by the impact of period two rates of $26 million (largely offset in depreciation and amortization expense) and $11 million from refunds related to 2017 Tax Reform at Kern River. Net income increased $35 million for 2019 compared to 2018, primarily due to the higher transportation revenue, excluding the impact of period two rates, lower property and other tax expense of $9 million due to a non-recurring property tax refund in 2019 and favorable margin of $9 million on system balancing activities, partially offset by higher depreciation and amortization expense, net of the impact of lower depreciation rates at Kern River, due to increased spending on capital projects.

BHE Transmission

Operating revenue decreased $48 million for 2020 compared to 2019, primarily due to a regulatory decision received in November 2020 at AltaLink and the stronger United States dollar of $7 million. Net income increased $2 million for 2020 compared to 2019, primarily due to lower non-regulated interest expense at BHE Canada and higher net income at BHE U.S. Transmission of $6 million mainly due to improved equity earnings from ETT, partially offset by the impacts of regulatory decisions received in 2020 and 2019 at AltaLink.

Operating revenue decreased $3 million for 2019 compared to 2018, mainly due to the stronger United States dollar of $17 million, largely offset by favorable regulatory decisions received in 2019 at AltaLink. Net income increased $19 million for 2019 compared to 2018, primarily due to favorable regulatory decisions received in 2019 and the unfavorable impacts of a regulatory rate order received in 2018 at AltaLink and higher equity earnings at ETT, partially offset by the stronger United States dollar impact of $5 million.

BHE Renewables

Operating revenue increased $4 million for 2020 compared to 2019, primarily due to higher natural gas, solar and hydro revenues of $21 million due to favorable generation, partially offset by an unfavorable change in the valuation of a power purchase agreement of $14 million and lower geothermal revenues of $4 million from lower pricing. Net income increased $90 million for 2020 compared to 2019, primarily due to favorable wind tax equity investment earnings of $129 million, partially offset by lower geothermal earnings of $22 million, due to higher operations and maintenance expense and lower pricing, and lower natural gas earnings of $17 million, due to lower margins. Wind tax equity investment earnings improved due to $147 million of earnings from projects reaching commercial operation, partially offset by lower commitment fee income of $15 million and lower earnings from existing tax equity investments of $6 million.


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Operating revenue increased $24 million for 2019 compared to 2018, primarily due to higher wind revenues of $32 million and higher natural gas and geothermal revenues of $32 million due to higher generation and pricing from market opportunities, partially offset by lower hydro revenues of $28 million due to lower rainfall and lower solar revenues of $11 million due to lower insolation. Wind revenues increased primarily due to $33 million from new projects and a favorable change in the valuation of a power purchase agreement of $11 million, partially offset by lower generation of $12 million at existing projects. Net income increased $102 million for 2019 compared to 2018, primarily due to higher wind earnings of $74 million and higher geothermal earnings of $53 million, largely due to higher generation and margins from market opportunities and lower operations and maintenance expense, partially offset by lower hydro earnings of $20 million, primarily due to lower rainfall and a declining financial asset balance, and lower solar earnings of $5 million primarily due to lower insolation. Wind earnings were favorable primarily due to improved tax equity investment earnings of $49 million, earnings from new projects of $35 million and a favorable change in the valuation of a power purchase agreement of $11 million, partially offset by lower revenues on existing projects of $12 million, primarily from lower generation, and $8 million of unfavorable changes in the valuation of interest rate swap derivatives. Tax equity investment earnings were favorable due to $57 million of earnings from projects reaching commercial operation and $7 million of higher commitment fee income, partially offset by $13 million of lower earnings from existing projects mainly due to lower generation caused by turbine blade repairs.

HomeServices

Operating revenue increased $923 million for 2020 compared to 2019, primarily due to higher brokerage revenue of $440 million from a 13% increase in closed transaction volume and higher mortgage revenue of $423 million from a 71% increase in funded mortgage volume due to an increase in refinance activity from the favorable interest rate environment. Net income increased $215 million for 2020 compared to 2019, primarily due to higher earnings at mortgage services of $138 million and higher earnings at brokerage services largely attributable to the favorable interest rate environment.

Operating revenue increased $259 million for 2019 compared to 2018, primarily due to an increase from acquired businesses of $221 million and higher mortgage revenue at existing businesses of $103 million from a 32% increase in funded mortgage volume due to an increase in refinance activity, partially offset by lower brokerage revenue at existing businesses of $74 million mainly due to a 1% decrease in closed transaction volume. Net income increased $15 million for 2019 compared to 2018, primarily due to higher earnings at existing mortgage businesses of $33 million due to an increase in refinance activity and net income from acquired businesses of $9 million, partially offset by $36 million of lower earnings at existing brokerage businesses primarily from lower closed volume and margins.

BHE and Other

Operating revenue decreased $118 million for 2020 compared to 2019, primarily due to lower electricity and natural gas volumes at MidAmerican Energy Services, LLC. Net income increased $3,585 million for 2020 compared to 2019, primarily due to the change in the after-tax unrealized position of the Company's investment in BYD Company Limited of $3,697 million, partially offset by higher BHE corporate interest expense and unfavorable comparative consolidated state income tax benefits.

Operating revenue decreased $58 million for 2019 compared to 2018, primarily due to lower electricity and natural gas volumes at MidAmerican Energy Services, LLC. Net loss remained the same for 2019 compared to 2018 as the change in the after-tax unrealized position of the Company's investment in BYD Company Limited of $156 million was offset by a $134 million income tax benefit recognized in 2018 related to the accrued repatriation tax on undistributed foreign earnings as a result of 2017 Tax Reform, higher BHE corporate interest expense and lower net income of $14 million at MidAmerican Energy Services, LLC driven by unrealized mark-to-market losses on contracts.

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Liquidity and Capital Resources

Each of BHE's direct and indirect subsidiaries is organized as a legal entity separate and apart from BHE and its other subsidiaries. It should not be assumed that the assets of any subsidiary will be available to satisfy BHE's obligations or the obligations of its other subsidiaries. However, unrestricted cash or other assets that are available for distribution may, subject to applicable law, regulatory commitments and the terms of financing and ring-fencing arrangements for such parties, be advanced, loaned, paid as dividends or otherwise distributed or contributed to BHE or affiliates thereof. The Company's long-term debt may include provisions that allow BHE or its subsidiaries to redeem such debt in whole or in part at any time. These provisions generally include make-whole premiums. Refer to Note 18 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding the limitation of distributions from BHE's subsidiaries.

As of December 31, 2020, the Company's total net liquidity was as follows (in millions):
MidAmericanNVNorthernBHE
 BHEPacifiCorpFundingEnergyPowergridCanadaOtherTotal
 
Cash and cash equivalents$623 $13 $39 $64 $78 $87 $386 $1,290 
   
Credit facilities(1)
3,500 1,200 1,509 650 228 923 3,020 11,030 
Less: 
Short-term debt— (93)— (45)(23)(225)(1,900)(2,286)
Tax-exempt bond support and letters of credit— (218)(370)— — (2)—��(590)
Net credit facilities3,500 889 1,139 605 205 696 1,120 8,154 
Total net liquidity$4,123 $902 $1,178 $669 $283 $783 $1,506 $9,444 
Credit facilities:      
Maturity dates202220222021, 2022202220232021, 20242021, 2022 

(1)    Includes the drawn uncommitted credit facilities totaling $23 million at Northern Powergrid.

Refer to Note 9 of the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding the Company's credit facilities, letters of credit, equity commitments and other related items.

Operating Activities

Net cash flows from operating activities for the years ended December 31, 2020 and 2019 were $6,224 million and $6,206 million, respectively. The increase was primarily due to an increase in income tax receipts and improved operating results, partially offset by changes in working capital.

Net cash flows from operating activities for the years ended December 31, 2019 and 2018 were $6.2 billion and $6.8 billion, respectively. The decrease was primarily due to changes in working capital, partially offset by an increase in income tax receipts.

The timing of the Company's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2020 and 2019 were $(13.2) billion and $(9.0) billion, respectively. The change was primarily due to higher cash paid for acquisitions and higher funding of tax equity investments, partially offset by lower capital expenditures of $599 million. Refer to "Future Uses of Cash" for further discussion of capital expenditures.
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Net cash flows from investing activities for the years ended December 31, 2019 and 2018 were $(9.0) billion and $(7.0) billion, respectively. The change was primarily due to higher capital expenditures of $1.1 billion and higher funding of tax equity investments. Refer to "Future Uses of Cash" for further discussion of capital expenditures.

Natural Gas Transmission and Storage Business Acquisition

On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of DEI and Dominion Questar, exclusive of the Questar Pipeline Group (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, after post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments.

On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in the first half of 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration of approximately $1.3 billion to Dominion Questar on November 2, 2020.

Financing Activities

Net cash flows from financing activities for the year ended December 31, 2020 were $7.1 billion. Sources of cash totaled $11.7 billion and consisted of proceeds from BHE senior debt issuances of $5.2 billion, proceeds from preferred stock issuances of $3.8 billion and proceeds from subsidiary debt issuances totaling $2.7 billion. Uses of cash totaled $4.5 billion and consisted mainly of $2.8 billion for repayments of subsidiary debt, net repayments of short term debt of $939 million and $350 million for repayments of BHE senior debt.

Net cash flows from financing activities for the year ended December 31, 2019 were $3.1 billion. Sources of cash totaled $5.4 billion and consisted of proceeds from subsidiary debt issuances totaling $4.7 billion and net proceeds from short-term debt of $684 million. Uses of cash totaled $2.3 billion and consisted mainly of $1.9 billion for repayments of subsidiary debt and repurchases of common stock of $293 million.

Net cash flows from financing activities for the year ended December 31, 2018 were $(174) million. Sources of cash totaled $5.6 billion and consisted of proceeds from BHE senior debt issuances of $3.2 billion and proceeds from subsidiary debt issuances totaling $2.4 billion. Uses of cash totaled $5.8 billion and consisted mainly of $2.4 billion for repayments of subsidiary debt, net repayments of short term debt of $1.9 billion, $1.0 billion for repayments of BHE senior debt and the purchase of redeemable noncontrolling interest of $131 million.

Debt Repurchases

The Company may from time to time seek to acquire its outstanding debt securities through cash purchases in the open market, privately negotiated transactions or otherwise. Any debt securities repurchased by the Company may be reissued or resold by the Company from time to time and will depend on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors. The amounts involved may be material.

Preferred Stock Issuance

On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration.

Common Stock Transactions

For the years ended December 31, 2020, 2019 and 2018, BHE repurchased 180,358 shares of its common stock for $126 million, 447,712 shares of its common stock for $293 million and 177,381 shares of its common stock for $107 million, respectively.
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Future Uses of Cash

The Company has available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, the issuance of equity and other sources. These sources are expected to provide funds required for current operations, capital expenditures, acquisitions, investments, debt retirements and other capital requirements. The availability and terms under which BHE and each subsidiary has access to external financing depends on a variety of factors, including regulatory approvals, its credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry and project finance markets, among other items.

Capital Expenditures

The Company has significant future capital requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Expenditures for certain assets may ultimately include acquisitions of existing assets.

The Company's historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, by reportable segment for the years ended December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
PacifiCorp$1,257 $2,175 $2,540 $1,717 $1,911 $2,550 
MidAmerican Funding2,332 2,810 1,836 2,101 1,924 2,036 
NV Energy503 657 675 742 1,001 980 
Northern Powergrid566 602 682 715 584 567 
BHE Pipeline Group427 687 659 1,011 949 939 
BHE Transmission270 247 372 279 294 237 
BHE Renewables817 122 95 96 91 84 
HomeServices47 54 36 46 40 38 
BHE and Other(1)
22 10 (130)79 59 53 
Total$6,241 $7,364 $6,765 $6,786 $6,853 $7,484 
(1)BHE and Other includes intersegment eliminations.

HistoricalForecast
201820192020202120222023
Wind generation$2,775 $2,828 $2,125 $1,115 $780 $1,101 
Electric distribution1,385 1,537 1,719 1,726 1,540 1,510 
Electric transmission608 1,070 958 993 1,665 1,734 
Natural gas transmission and storage451717640872832865
Solar generation305161504401,037 
Other992 1,207 1,307 1,930 1,596 1,237 
Total$6,241 $7,364 $6,765 $6,786 $6,853 $7,484 

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The Company's historical and forecast capital expenditures consisted mainly of the following:
Wind generation expenditures include the following:
Construction of wind-powered generating facilities at MidAmerican Energy totaling $848 million for 2020, $1,486 million for 2019 and $1,261 million for 2018. MidAmerican Energy placed in-service 729 MWs (nominal ratings) during 2020, including the acquisition of an existing 80-MW wind farm, 1,019 MWs (nominal ratings) during 2019 and 817 MWs (nominal ratings) during 2018. Wind XI, a 2,000-MW project, was completed in January 2020. Wind XII, a 592-MW project, was placed in-service in 2019 and 2020. MidAmerican Energy had three other wind-powered generation projects under construction in 2020 that totaled 319 MWs, including facilities placed in-service in 2020 and the remainder expected to be placed in-service in early 2021. MidAmerican Energy expects all of these wind-powered generating facilities to qualify for 100% of PTCs available. PTCs from these projects are excluded from MidAmerican Energy's Iowa energy adjustment clause until these generation assets are reflected in base rates.
MidAmerican Energy is currently planning to construct 483 MWs of additional wind-powered generating facilities, for which the related projects are at varying stages of development. Planned spending for those projects totals $461 million for 2021, $16 million for 2022 and $421 million for 2023.
Repowering certain existing wind-powered generating facilities at MidAmerican Energy totaling $37 million for 2020, $369 million for 2019 and $422 million for 2018. The repowering projects entail the replacement of significant components of older turbines. Planned spending for the repowered generating facilities totals $409 million in 2021 and $673 million in 2022. Of the 1,079 MWs of current repowering projects not in-service as of December 31, 2020, 80 MWs are currently expected to qualify for 100% of the federal PTCs available for ten years following each facility's return to service, 592 MWs are expected to qualify for 80% of such credits and 407 MWs are expected to qualify for 60% of such credits.
Construction of wind-powered generating facilities at PacifiCorp totaling $1,148 million for 2020, $338 million for 2019 and $9 million for 2018 and includes 674 MWs of new wind-powered generating facilities that were placed in-service in 2020 and 516 MWs expected to be placed in-service in 2021. Planned spending for the new wind-powered generating facilities totals $43 million in 2021 and $533 million in 2023. The energy production from the new wind-powered generating facilities is expected to qualify for 100% of the federal PTCs available for ten years once the equipment is placed in-service.
Repowering certain existing wind-powered generating facilities at PacifiCorp totaling $125 million for 2020, $585 million for 2019 and $332 million for 2018. The repowering projects entail the replacement of significant components of older turbines. Certain repowering projects were placed in service in 2019 and 2020 and the remaining repowering projects are expected to be placed in-service in 2021. Planned spending for the repowered generating facilities totals $42 million in 2021, $19 million in 2022 and $64 million in 2023. The energy production from such repowered facilities is expected to qualify for 100% of the federal PTCs available for ten years following each facility's return to service.
Construction of wind-powered generating facilities at BHE Renewables totaling $15 million for 2019 and $717 million for 2018. BHE Renewables placed in-service 512 MWs during 2018.
Electric distribution includes both growth and operating expenditures. Growth expenditures include new customer connections and enhancements to existing customer connections. Operating expenditures include ongoing distribution systems infrastructure needed at the Utilities and Northern Powergrid, wildfire mitigation, damage restoration and storm damage repairs and investments in routine expenditures for distribution needed to serve existing and expected demand.
Electric transmission includes both growth and operating expenditures. Growth expenditures include PacifiCorp's costs for the 140-mile 500-kV Aeolus-Bridger/Anticline transmission line, which is a major segment of PacifiCorp's Energy Gateway Transmission expansion program placed in-service in November 2020, the Nevada Utilities' Greenlink Nevada transmission expansion program and AltaLink's directly assigned projects from the AESO. Operating expenditures include system reinforcement and investments in routine expenditures for transmission needed to serve existing and expected demand.
Natural gas transmission and storage includes both growth and operating expenditures. Growth expenditures includes, among other items, the Northern Natural Gas New Lisbon Expansion and Twin Cities Area Expansion projects. Operating expenditures include, among other items, asset modernization and pipeline integrity projects.
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Solar generation includes growth expenditures, including MidAmerican Energy's current plan to construct 767 MWs of small- and utility-scale solar generation, for which the related projects are in varying stages of development. Nevada Power's solar generation investment includes expenditures for a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage, known as the Dry Lake generating facility. Commercial operation at Dry Lake is expected by the end of 2023.
Other capital expenditures includes both growth and operating expenditures, including routine expenditures for generation and other infrastructure needed to serve existing and expected demand, natural gas distribution, technology, and environmental spending relating to emissions control equipment and the management of CCR.

Contractual Obligations
The Company has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes the Company's material contractual cash obligations as of December 31, 2020 (in millions):
Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
BHE senior debt$450 $900 $1,650 $10,551 $13,551 
BHE junior subordinated debentures— — — 100 100 
Subsidiary debt1,389 4,148 3,585 26,986 36,108 
Interest payments on long-term debt(1)
2,063 3,919 3,511 23,094 32,587 
Short-term debt2,286 — — — 2,286 
Operating and finance lease liabilities167 249 156 509 1,081 
Interest payments on operating and finance lease liabilities(1)
67 106 80 365 618 
Fuel, capacity and transmission contract commitments(1)
2,122 2,866 2,332 12,985 20,305 
Construction commitments(1)
783 520 — 1,307 
Easements(1)
72 148 146 2,229 2,595 
Other(1)
472 749 492 1,464 3,177 
Total contractual cash obligations$9,871 $13,605 $11,952 $78,287 $113,715 

(1)Not reflected on the Consolidated Balance Sheets.

The Company has other types of commitments that arise primarily from unused lines of credit, letters of credit or relate to construction and other development costs (refer to Liquidity and Capital Resources included within this Item 7 and Note 9), uncertain tax positions (refer to Note 12) and AROs (refer to Note 14), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information.

Additionally, the Company has invested in projects sponsored by third parties, commonly referred to as tax equity investments. Under the terms of these tax equity investments, the Company has entered into equity capital contribution agreements with the project sponsors that require contributions. The Company has made contributions of $403$2,736 million, $584$1,619 million and $170$698 million in 2017, 20162020, 2019 and 2015,2018, respectively, and has commitments as of December 31, 2020, subject to satisfaction of certain specified conditions, to provide equity contributions of $563 million in 2021 pursuant to these equity capital contribution agreements as the various projects achieve commercial operation. Once a project achieves commercial operation, the Company enters into a partnership agreement with the project sponsor that directs and allocates the operating profits and tax benefits from the project.


BHE,
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Regulatory Matters

The Company is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further information regarding the Company's general regulatory framework and current regulatory matters.

COVID-19

In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by the Company. While COVID-19 has impacted the Company's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. Most jurisdictions in which the Company operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity or natural gas may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by the Utilities and Northern Powergrid related to customer collection activity and suspension of disconnections for non-payment, the Utilities and Northern Powergrid have seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for the deferral or recovery of certain costs incurred in responding to COVID-19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion. Residential property transactions may also decline in the future at HomeServices due to the varying phases of state recovery plans and associated duration of restrictions on business openings, other measures and general economic uncertainty.

Several of the Company's businesses have been deemed essential and their employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain the electric generation, transmission and distribution systems and the natural gas transportation and distribution systems. In response to the effects of COVID-19, the Company has implemented various business continuity plans to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID-19.

Quad Cities Generating Station Operating Status

Exelon Generation Company, LLC ("Exelon Generation"), the operator of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station") of which MidAmerican Energy has a 25% ownership interest, announced on June 2, 2016, its intention to shut down Quad Cities Station on June 1, 2018. In December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Agency to purchase ZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the ZECs will provide Exelon Generation additional revenue through 2027 as an incentive for continued operation of Quad Cities Station. MidAmerican Energy will not receive additional revenue from the subsidy.

The PJM Interconnection, L.L.C. ("PJM") capacity market includes a Minimum Offer Price Rule ("MOPR"). If a generation resource is subjected to a MOPR, its offer price in the market is adjusted to effectively remove the revenues it receives through a subsidiary, owns 50%government-provided financial support program, resulting in a higher offer that may not clear the capacity market. Prior to December 19, 2019, the PJM MOPR applied only to certain new gas-fired resources. An expanded PJM MOPR to include existing resources would require exclusion of Electric Transmission Texas, LLC,ZEC compensation when bidding into future capacity auctions, resulting in an increased risk of Quad Cities Station not receiving capacity revenues in future auctions.

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On December 19, 2019, the FERC issued an order requiring the PJM to broadly apply the MOPR to all new and existing resources, including nuclear. This greatly expands the breadth and scope of the PJM's MOPR, which ownsis effective as of the PJM's next capacity auction. While the FERC included some limited exemptions in its order, no exemptions were available to state-supported nuclear resources, such as Quad Cities Station. The FERC provided no new mechanism for accommodating state-supported resources other than the existing Fixed Resource Requirement ("FRR") mechanism under which an entire utility zone would be removed from PJM's capacity auction along with sufficient resources to support the load in such zone. In response to the FERC's order, the PJM submitted a compliance filing on March 18, 2020, wherein the PJM proposes tariff language reflecting the FERC's directives and operates electric transmission assetsa schedule for resuming capacity auctions. On April 16, 2020, the FERC issued an order largely denying requests for rehearing of the FERC's December 2019 order but granting a few clarifications that required an additional PJM compliance filing, which it submitted on June 1, 2020. On October 15, 2020, the FERC issued an order denying requests for rehearing of its April 16, 2020 order and accepting the PJM's two compliance filings, subject to a further compliance filing to revise minor aspects of the proposed MOPR methodology. As part of that order, the FERC also accepted the PJM's proposal to condense the schedule of activities leading up to the next capacity auction but did not specify when that schedule would commence given that a key element of the MOPR level computation remains pending before the FERC in another proceeding. In November 2020, the PJM announced that the next capacity auction will be conducted in May 2021.

On May 21, 2020, the FERC issued an order involving reforms to the PJM's day-ahead and real-time reserves markets that need to be reflected in the Electric Reliability Councilcalculation of Texas footprint. BHE, through a subsidiary, owns 66.67% of Bridger Coal Company ("Bridger Coal"), which is a coal mining joint venture that supplies coalMOPR levels. In approving reforms to the Jim Bridger Nos. 1-4 generating facility. Bridger CoalPJM's reserves markets, the FERC also directed the PJM to develop a new methodology for estimating revenues that resources will receive for sales of energy and related services, which will then be used in calculating a number of parameters and assumptions used in the capacity market, including MOPR levels. The PJM submitted its new revenue projection methodology on August 5, 2020. On review of this compliance filing, the FERC is beingexpected to address how these additional reforms will impact MOPR levels, the timeline for implementing the new revenue projection methodology, and the timing for commencing the capacity auction schedule.

Exelon Generation is currently working with PJM and other stakeholders to pursue the FRR option as an alternative to the next PJM capacity auction. If Illinois implements the FRR option, Quad Cities Station could be removed from PJM's capacity auction and instead supply capacity and be compensated under the FRR program. If Illinois cannot implement an FRR program in its PJM zones, then the MOPR will apply to Quad Cities Station, resulting in higher offers for its units that may not clear the capacity market. Implementing the FRR program in Illinois will require both legislative and regulatory changes. MidAmerican Energy cannot predict whether or when such legislative and regulatory changes can be implemented or their potential impact on the continued operation of Quad Cities Station.

Environmental Laws and Regulations

The Company is subject to federal, state, local and foreign laws and regulations regarding climate change, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. In addition to imposing continuing compliance obligations and capital expenditure requirements, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. The Company believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion regarding environmental laws and regulations.

Collateral and Contingent Features

Debt of BHE and debt and preferred securities of certain of its subsidiaries are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of the rated company's ability to, in general, meet the obligations of its issued debt or preferred securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.

BHE and its subsidiaries have no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. The Company's unsecured revolving credit facilities do not require the maintenance of a minimum credit rating level in order to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.

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In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2020, the applicable entities' credit ratings from the recognized credit rating agencies were investment grade. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2020, the Company would have been required to post $307 million of additional collateral. The Company's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors.

Inflation

Historically, overall inflation and changing prices in the economies where BHE's subsidiaries operate have not had a significant impact on the Company's consolidated financial results. In the United States and Canada, the Regulated Businesses operate under cost-of-service based rate structures administered by various state and provincial commissions and the FERC. Under these rate structures, the Regulated Businesses are allowed to include prudent costs in their rates, including the impact of inflation. The price control formula used by the Northern Powergrid Distribution Companies incorporates the rate of inflation in determining rates charged to customers. BHE's subsidiaries attempt to minimize the potential impact of inflation on their operations through the use of fuel, energy and other cost adjustment clauses and bill riders, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.

Off-Balance Sheet Arrangements

The Company has certain investments that are accounted for under the equity method in accordance with GAAP. Accordingly, an amount is recorded on the Company's Consolidated Balance Sheets as an equity investment and is increased or decreased for the Company's pro-rata share of earnings or losses, respectively, less any dividends from such investments. Certain equity investments are presented on the Consolidated Balance Sheets net of investment tax credits.

As of December 31, 2020, the Company's investments that are accounted for under the equity method had short- and long-term debt of $2.7 billion, unused revolving credit facilities of $173 million and letters of credit outstanding of $88 million. As of December 31, 2020, the Company's pro-rata share of such short- and long-term debt was $1.3 billion, unused revolving credit facilities was $87 million and outstanding letters of credit was $43 million. The entire amount of the Company's pro-rata share of the outstanding short- and long-term debt and unused revolving credit facilities is non-recourse to the Company. The entire amount of the Company's pro-rata share of the outstanding letters of credit is recourse to the Company. Although the Company is generally not required to support debt service obligations of its equity investees, default with respect to this non-recourse short- and long-term debt could result in a loss of invested equity.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by the Company's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with the Company's Summary of Significant Accounting Policies included in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

The Regulated Businesses prepare their financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, the Regulated Businesses defer the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

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The Company continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit the Regulated Businesses' ability to recover their costs. The Company believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal, state and provincial levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as AOCI. Total regulatory assets were $3.4 billion and total regulatory liabilities were $7.5 billion as of December 31, 2020. Refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Regulated Businesses' regulatory assets and liabilities.

Impairment of Goodwill and Long-Lived Assets

The Company's Consolidated Balance Sheet as of December 31, 2020 includes goodwill of acquired businesses of $11.5 billion. The Company evaluates goodwill for impairment at least annually and completed its annual review as of October 31. Additionally, no indicators of impairment were identified as of December 31, 2020. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. The Company uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings or rate base; and an appropriate discount rate. Estimated future cash flows are impacted by, among other factors, growth rates, changes in regulations and rates, ability to renew contracts and estimates of future commodity prices. In estimating future cash flows, the Company incorporates current market information, as well as historical factors. Refer to Note 22 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's goodwill.

The Company evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.

The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what the Company would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, load growth, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect the Company's results of operations.

Pension and Other Postretirement Benefits

Certain of the Company's subsidiaries sponsor defined benefit pension and other postretirement benefit plans that cover the majority of employees. The Company recognizes the funded status of the defined benefit pension and other postretirement benefit plans on the Consolidated Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2020, the Company recognized a net liability totaling $138 million for the funded status of the defined benefit pension and other postretirement benefit plans. As of December 31, 2020, amounts not yet recognized as a component of net periodic benefit cost that were included in net regulatory assets totaled $604 million and in AOCI totaled $655 million.


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The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rates, expected long-term rate of return on plan assets and healthcare cost trend rates. These key assumptions are reviewed annually and modified as appropriate. The Company believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for disclosures about the defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2020.

The Company chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.

In establishing its assumption as to the expected long-term rate of return on plan assets, the Company utilizes the expected asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. The Company regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.

The Company chooses a healthcare cost trend rate that reflects the near and long-term expectations of increases in medical costs and corresponds to the expected benefit payment periods. The healthcare cost trend rate is assumed to gradually decline to 5.00% by 2025, at which point the rate of increase is assumed to remain constant. Refer to Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for healthcare cost trend rate sensitivity disclosures.

The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Consolidated Financial Statements would be as follows (dollars in millions):
Domestic Plans
Other PostretirementUnited Kingdom
Pension PlansBenefit PlansPension Plan
+0.5%-0.5%+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020
Benefit Obligations:
Discount rate$(164)$184 $(38)$41 $(187)$219 
Effect on 2020 Periodic Cost:
Discount rate$(2)$$$(1)$(20)$22 
Expected rate of return on plan assets(12)12 (4)(11)11 

A variety of factors affect the funded status of the plans, including asset returns, discount rates, mortality assumptions, plan changes and the Company's funding policy for each plan.

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Income Taxes

In determining the Company's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the Company's various regulatory commissions. The Company's income tax returns are subject to continuous examinations by federal, state, local and foreign income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of the Company's federal, state, local and foreign income tax examinations is uncertain, the Company believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on the Company's consolidated financial results. Refer to Note 12 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's income taxes.

It is probable the Company's regulated businesses will pass income tax benefits and expense related to the federal tax rate change from 35% to 21% as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to their customers. As of December 31, 2020, these amounts were recognized as a net regulatory liability of $3.3 billion and will be included in regulated rates when the temporary differences reverse.

The Company has not established deferred income taxes on its undistributed foreign earnings that have been determined by management to be reinvested indefinitely; however, the Company periodically evaluates its capital requirements. If circumstances change in the future and a portion of the Company's undistributed foreign earnings were repatriated, the dividends may be subject to taxation in the United States but the tax is not expected to be material.

Revenue Recognition - Unbilled Revenue

Revenue recognized is equal to what the Company has the right to invoice as it corresponds directly with the value to the customer of the Company's performance to date and includes billed and unbilled amounts. The determination of customer invoices is based on a systematic reading of meters, fixed reservation charges based on contractual quantities and rates or, in the case of the Great Britain distribution businesses, when information is received from the national settlement system. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $750 million as of December 31, 2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Unbilled revenue is reversed in the following month and billed revenue is recorded based on the subsequent meter readings.

Item 7A.Quantitative and Qualitative Disclosures About Market Risk

The Company's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. The Company's significant market risks are primarily associated with commodity prices, interest rates, equity prices, foreign currency exchange rates and the extension of credit to counterparties with which the Company transacts. The following discussion addresses the significant market risks associated with the Company's business activities. Each of the Company's business platforms has established guidelines for credit risk management.


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Commodity Price Risk

The Company is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk primarily through BHE's ownership of the Utilities as they have an obligation to serve retail customer load in their regulated service territories. The Company also provides nonregulated retail electricity and natural gas services in competitive markets. The Utilities' load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage and transmission and transportation constraints. The Company does not engage in a material amount of proprietary trading activities. To manage a portion of its commodity price risk, the Company uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. The Company does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. The Company's exposure to commodity price risk is generally limited by its ability to include commodity costs in regulated rates, which is subject to regulatory lag that occurs between the time the costs are incurred and when the costs are included in regulated rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.

The table that follows summarizes the Company's price risk on commodity contracts accounted for as derivatives, excluding collateral netting of $35 million and $79 million, respectively, as of December 31, 2020 and 2019, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices with the contracted or expected volumes. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).
Fair Value -Estimated Fair Value after
Net AssetHypothetical Change in Price
(Liability)10% increase10% decrease
As of December 31, 2020:
Not designated as hedging contracts$103 $143 $63 
Designated as hedging contracts(4)10 (18)
Total commodity derivative contracts$99 $153 $45 
As of December 31, 2019:
Not designated as hedging contracts$16 $57 $(24)
Designated as hedging contracts(21)(1)(41)
Total commodity derivative contracts$(5)$56 $(65)

The settled cost of certain of the Company's commodity derivative contracts not designated as hedging contracts is included in regulated rates and, therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose the Company to earnings volatility. Consolidated financial results would be negatively impacted if the costs of wholesale electricity, wholesale natural gas or fuel are higher than what is included in regulated rates, including the impacts of adjustment mechanisms. As of December 31, 2020 and 2019, a net regulatory liability of $14 million and regulatory asset of $77 million, respectively, was recorded related to the net derivative asset of $103 million and $16 million, respectively. The difference between the net regulatory asset and the net derivative asset relates primarily to a power purchase agreement derivative at BHE Renewables. For the Company's commodity derivative contracts designated as hedging contracts, net unrealized gains and losses associated with interim price movements on commodity derivative contracts, to the extent the hedge is considered effective, generally do not expose the Company to earnings volatility.

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Interest Rate Risk

The Company is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt, future debt issuances and mortgage commitments. The Company manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, the Company's fixed-rate long-term debt does not expose the Company to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if the Company were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of the Company's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 9, 10, 11, and 15 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of the Company's short and long-term debt.

As of December 31, 2020 and 2019, the Company had short- and long-term variable-rate obligations totaling $4.4 billion and $4.8 billion, respectively, that expose the Company to the risk of increased interest expense in the event of increases in short-term interest rates. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on the Company's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 2020 and 2019.

The Company may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, forward sale commitments or mortgage interest rate lock commitments, to mitigate the Company's exposure to interest rate risk. Changes in fair value of agreements designated as cash flow hedges are reported in AOCI to the extent the hedge is effective until the forecasted transaction occurs. Changes in fair value of agreements not designated as hedging contracts are recognized in earnings. As of December 31, 2020 and 2019, the Company had variable-to-fixed interest rate swaps with notional amounts of $1,083 million and $380 million, respectively, and £121 million and £141 million, respectively, to protect the Company against an increase in interest rates. Additionally, as of December 31, 2020 and 2019, the Company had mortgage commitments, net, with notional amounts of $1,636 million and $913 million, respectively, to protect the Company against an increase in interest rates. The fair value of the Company's interest rate derivative contracts was a net derivative liability of $3 million as of December 31, 2020 and a net derivative liability of $5 million as of December 31, 2019. A hypothetical 20 basis point increase and a 20 basis point decrease in interest rates would not have a material impact on the Company.

Equity Price Risk

Market prices for equity securities are subject to fluctuation and consequently the amount realized in the subsequent sale of an investment may significantly differ from the reported market value. Fluctuation in the market price of a security may result from perceived changes in the underlying economic characteristics of the investee, the relative price of alternative investments and general market conditions.

As of December 31, 2020 and 2019, the Company's investment in BYD Company Limited common stock represented approximately 91% and 69%, respectively, of the total fair value of the Company's equity securities. The majority of the Company's remaining equity securities are held in a trust related to the decommissioning of nuclear generation assets and the realized and unrealized gains and losses are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates. The following table summarizes the Company's investment in BYD Company Limited as of December 31, 2020 and 2019 and the effects of a hypothetical 30% increase and a 30% decrease in market price as of those dates. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).
EstimatedHypothetical
HypotheticalFair Value afterPercentage Increase
FairPriceHypothetical(Decrease) in BHE
ValueChangeChange in PricesShareholders' Equity
As of December 31, 2020$5,897 30% increase$7,666 %
30% decrease4,128 (2)
As of December 31, 2019$1,122 30% increase$1,459 %
30% decrease785 (1)
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Foreign Currency Exchange Rate Risk

BHE's business operations and investments outside of the United States increase its risk related to fluctuations in foreign currency exchange rates primarily in relation to the British pound and the Canadian dollar. BHE's reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from BHE's foreign operations changes with the fluctuations of the currency in which they transact.

Northern Powergrid's functional currency is the British pound. As of December 31, 2020, a 10% devaluation in the British pound to the United States dollar would result in the Company's Consolidated Balance Sheet being negatively impacted by a $487 million cumulative translation adjustment in AOCI. A 10% devaluation in the average currency exchange rate would have resulted in lower reported earnings for Northern Powergrid of $20 million in 2020.

BHE Canada's functional currency is the Canadian dollar. As of December 31, 2020, a 10% devaluation in the Canadian dollar to the United States dollar would result in the Company's Consolidated Balance Sheet being negatively impacted by a $361 million cumulative translation adjustment in AOCI. A 10% devaluation in the average currency exchange rate would have resulted in lower reported earnings for BHE Canada of $17 million in 2020.

As of December 31, 2020, the Company had foreign currency exchange rate swaps with €250 million in aggregate notional amounts to mitigate its Euro denominated debt foreign currency exchange rate risk. A hypothetical 10% decrease in market interest rates would not have resulted in a material decrease in fair value of the foreign currency exchange rate swaps as of December 31, 2020.

Credit Risk

Domestic Regulated Operations

The Utilities are exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent the Utilities' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, the Utilities analyze the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, the Utilities enter into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, the Utilities exercise rights under these arrangements, including calling on the counterparty's credit support arrangement.

As of December 31, 2020, PacifiCorp's aggregate credit exposure with wholesale energy supply and marketing counterparties included counterparties having non-investment grade, internally rated credit ratings. Substantially all of these non-investment grade, internally rated counterparties are associated with long-duration solar and wind power purchase agreements from facilities that have not yet achieved commercial operation and for which PacifiCorp has no obligation should the facilities not achieve commercial operation.

Substantially all of MidAmerican Energy's electric wholesale sales revenue results from participation in RTOs, including the MISO and the PJM. MidAmerican Energy's share of historical losses from defaults by other RTO market participants has not been material. Additionally, as of December 31, 2020, MidAmerican Energy's aggregate direct credit exposure from electric wholesale marketing counterparties was not material.

As of December 31, 2020, NV Energy's aggregate credit exposure from energy related transactions, based on settlement and mark-to-market exposures, net of collateral, was not material.

BHE GT&S primary customers include electric and natural gas distribution utilities and LNG export, import and storage customers. Northern Natural Gas' primary customers include utilities in the upper Midwest. Kern River's primary customers are electric and natural gas distribution utilities, major oil and natural gas companies or affiliates of such companies, electric generating companies, energy marketing and trading companies and financial institutions. As a general policy, collateral is not required for receivables from creditworthy customers. Customers' financial condition and creditworthiness, as defined by the tariff, are regularly evaluated and historical losses have been minimal. In order to provide protection against credit risk, and as permitted by the separate terms of each of BHE GT&S, Northern Natural Gas' and Kern River's tariffs, the companies have required customers that lack creditworthiness to provide cash deposits, letters of credit or other security until they meet the creditworthiness requirements of the respective tariff.
124


Northern Powergrid

The Northern Powergrid Distribution Companies charge fees for the use of their distribution systems to supply companies. The supply companies purchase electricity from generators and traders, sell the electricity to end-use customers and use the Northern Powergrid Distribution Companies' distribution networks pursuant to the multilateral "Distribution Connection and Use of System Agreement." The Northern Powergrid Distribution Companies' customers are concentrated in a small number of electricity supply businesses. During 2020, RWE Npower PLC and certain of its affiliates and British Gas Trading Limited represented approximately 15% and 12%, respectively, of the total combined distribution revenue of the Northern Powergrid Distribution Companies. The industry operates in accordance with a framework which sets credit limits for each supply business based on its credit rating or payment history and requires them to provide credit cover if their value at risk (measured as being equivalent to 45 days usage) exceeds the credit limit. Acceptable credit typically is provided in the form of a parent company guarantee, letter of credit or an escrow account. Ofgem has indicated that, provided the Northern Powergrid Distribution Companies have implemented credit control, billing and collection in line with best practice guidelines and can demonstrate compliance with the guidelines or are able to satisfactorily explain departure from the guidelines, any bad debt losses arising from supplier default will be recovered through an increase in future allowed income. Losses incurred to date have not been material.

BHE Canada

AltaLink's primary source of operating revenue is the AESO, an entity rated AA- by Standard and Poor's. Because of the dependence on a single customer, any material failure of the customer to fulfill its obligations would significantly impair AltaLink's ability to meet its existing and future obligations. Total operating revenue for AltaLink was $653 million for the year ended December 31, 2020.

BHE Renewables

BHE Renewables owns independent power projects in the United States and the Philippines that generally have separate project financing agreements. These projects source of operating revenue is derived primarily from long-term power purchase agreements with single customers, primarily utilities, which expire between 2019 and 2043. Because of the dependence generally from a single customer at each project, any material failure of the customer to fulfill its obligations would significantly impair that project's ability to meet its existing and future obligations. Total operating revenue for BHE Renewables was $936 million for the year ended December 31, 2020.

Other Energy Business

MES is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with financial institutions and other market participants. Credit risk may be concentrated to the extent that MES' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, MES analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, MES enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, MES exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

As of December 31, 2020, MES' aggregate credit exposure from energy related transactions, based on settlement and mark-to-market exposures, net of collateral, was not material.

125


Item 8.Financial Statements and Supplementary Data

126


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Board of Directors and the Shareholders of
Berkshire Hathaway Energy Company
Des Moines, Iowa

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Berkshire Hathaway Energy Company and subsidiaries (the "Company") as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2020, the related notes and the schedules listed in the Index at Item 15(a)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

Change in Accounting Principle

In 2019, the Company has changed its method of accounting for leases due to adoption of ASU 2016-02 "Leases".

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing a separate opinion on the critical audit matters or on the accounts or disclosures to which they relate.


127


Regulatory Matters - Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 7 to the financial statements

Critical Audit Matter Description

The Company, through its regulated businesses, is subject to rate regulation by the Federal Energy Regulatory Commission as well as certain other regulatory commissions (collectively the "Commissions"), which have jurisdiction with respect to the rates of the Company's regulated businesses in the respective service territories where the Company operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense and income tax expense (benefit).

Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow the Company an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While the Company has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit the Company's ability to recover their costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated the Company's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected the Company's filings with the Commissions and the filings with the Commissions by intervenors that may impact the Company's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.
128


Goodwill — NV Energy and Northern Powergrid Reporting Units — Refer to Notes 2 and 22 to the financial statements

Critical Audit Matter Description

The Company's evaluation of goodwill for impairment involves the comparison of the estimated fair value of the reporting unit to the carrying value. The Company used a variety of methods to estimate the reporting unit's fair value, principally discounted projected future net cash flows. The cash flow model requires management to make significant estimates and assumptions related to forecasts of future cash flows, discount rates, and multiples of earnings or rate base. Changes in these assumptions could have a significant impact on either the fair value, the amount of any goodwill impairment charge, or both. The Company's goodwill balance was $11,506 million as of December 31, 2020, of which $2,369 million was allocated to the NV Energy reporting unit ("NV Energy") and $1,000 million was allocated to the Northern Powergrid reporting unit ("Northern Powergrid"). The fair value of NV Energy and Northern Powergrid exceeded their carrying value as of the measurement date and, therefore, no impairment was recognized.

Given the significant judgments made by management to estimate the fair value of the NV Energy and Northern Powergrid reporting units and the difference between their fair value and carrying value, performing audit procedures to evaluate the reasonableness of management's estimates and assumptions related to selection of the forecasts of future cash flows, discount rate, and multiples of earnings or rate base, required a high degree of auditor judgment and an increased extent of effort, including the need to involve our fair value specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the forecasts of future cash flows, discount rate, and multiples of earnings or rate base used by management to estimate the fair value of the NV Energy and Northern Powergrid reporting units included the following, among others:
We evaluated management's ability to accurately forecast future cash flows by comparing actual results to management's historical forecasts.
We evaluated the reasonableness of management's future cash flow forecasts by comparing the forecasts to historical cash flows.
We evaluated the impact of changes in management's forecasts from the October 31, 2020, annual measurement date to December 31, 2020.
With the assistance of our fair value specialists, we evaluated the reasonableness of the valuation methodology, the discount rate, and the multiples of earnings or rate base by:
Testing the source information underlying the determination of the discount rate and the mathematical accuracy of the calculation.
Developing a range of independent estimates and comparing those to the discount rate and multiples of earnings or rate base selected by management.

California and Oregon 2020 Wildfires – Contingencies – See Note 16 to the financial statements

Critical Audit Matter Description

The Company has loss contingencies related to the California and Oregon 2020 wildfires (the "2020 wildfires"). The Company has recorded estimated liabilities, net of expected insurance recoveries, of $136 million as of December 31, 2020, which represents its best estimate of probable losses, net of expected insurance recoveries, as a result of the 2020 wildfires.

We identified wildfire-related contingencies and the related disclosure as a critical audit matter because of the significant judgments made by management to estimate the losses. This required the application of a high degree of judgment and extensive effort when performing audit procedures to evaluate the reasonableness of management's estimate of the losses and disclosure related to wildfire-related loss contingencies.

129


How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's judgments regarding its estimate of losses for wildfire-related contingencies and the related disclosure included the following, among others:
We evaluated management's judgments related to whether a loss was probable and reasonably estimable, reasonably possible, or remote for each individual wildfire by inquiring of management and the Company's external and internal legal counsel regarding the amounts of probable and reasonably estimable, reasonably possible, and remote losses, including the potential impact of information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire, and external information for any evidence that might contradict management's assertions.
We evaluated the estimation methodology for determining the amount of probable loss through inquiries with management and its external and internal legal counsel.
We tested the significant assumptions used in determining the estimate, including, but not limited to, information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire.
We read legal letters from the Company's external and internal legal counsel regarding information regarding ongoing litigation related to the 2020 wildfires and evaluated whether the information therein was consistent with the information obtained in our procedures.
We evaluated whether the Company's disclosures were appropriate and consistent with the information obtained in our procedures.

/s/    Deloitte & Touche LLP

Des Moines, Iowa
February 26, 2021

We have served as the Company's auditor since 1991.


130


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$1,290 $1,040 
Restricted cash and cash equivalents140 212 
Trade receivables, net2,107 1,910 
Inventories1,168 873 
Mortgage loans held for sale2,001 1,039 
Other current assets2,741 839 
Total current assets9,447 5,913 
  
Property, plant and equipment, net86,128 73,305 
Goodwill11,506 9,722 
Regulatory assets3,157 2,766 
Investments and restricted cash and cash equivalents and investments14,320 6,255 
Other assets2,758 2,090 
  
Total assets$127,316 $100,051 

The accompanying notes are an integral part of these consolidated financial statements.
131


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)
As of December 31,
20202019
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable$1,867 $1,839 
Accrued interest555 493 
Accrued property, income and other taxes582 537 
Accrued employee expenses383 285 
Short-term debt2,286 3,214 
Current portion of long-term debt1,839 2,539 
Other current liabilities1,626 1,350 
Total current liabilities9,138 10,257 
  
BHE senior debt12,997 8,231 
BHE junior subordinated debentures100 100 
Subsidiary debt34,930 28,483 
Regulatory liabilities7,221 7,100 
Deferred income taxes11,775 9,653 
Other long-term liabilities4,178 3,649 
Total liabilities80,339 67,473 
  
Commitments and contingencies (Note 16)00
  
Equity:  
BHE shareholders' equity:  
Preferred stock - 100 shares authorized, $0.01 par value, 4 shares issued and outstanding3,750 
Common stock - 115 shares authorized, 0 par value, 76 and 77 shares issued and outstanding
Additional paid-in capital6,377 6,389 
Long-term income tax receivable(658)(530)
Retained earnings35,093 28,296 
Accumulated other comprehensive loss, net(1,552)(1,706)
Total BHE shareholders' equity43,010 32,449 
Noncontrolling interests3,967 129 
Total equity46,977 32,578 
  
Total liabilities and equity$127,316 $100,051 

The accompanying notes are an integral part of these consolidated financial statements.
132


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)
Years Ended December 31,
202020192018
Operating revenue:
Energy$15,556 $15,371 $15,573 
Real estate5,396 4,473 4,214 
Total operating revenue20,952 19,844 19,787 
 
Operating expenses: 
Energy: 
Cost of sales4,187 4,586 4,769 
Operations and maintenance3,545 3,318 3,440 
Depreciation and amortization3,410 2,965 2,933 
Property and other taxes634 574 573 
Real estate4,885 4,251 4,000 
Total operating expenses16,661 15,694 15,715 
  
Operating income4,291 4,150 4,072 
 
Other income (expense): 
Interest expense(2,021)(1,912)(1,838)
Capitalized interest80 77 61 
Allowance for equity funds165 173 104 
Interest and dividend income71 117 113 
Gains (losses) on marketable securities, net4,797 (288)(538)
Other, net88 97 (9)
Total other income (expense)3,180 (1,736)(2,107)
  
Income before income tax expense (benefit) and equity (loss) income7,471 2,414 1,965 
Income tax expense (benefit)308 (598)(583)
Equity (loss) income(149)(44)43 
Net income7,014 2,968 2,591 
Net income attributable to noncontrolling interests71 18 23 
Net income attributable to BHE shareholders6,943 2,950 2,568 
Preferred dividends26 
Earnings on common shares$6,917 $2,950 $2,568 

The accompanying notes are an integral part of these consolidated financial statements.

133


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)
Years Ended December 31,
202020192018
Net income$7,014 $2,968 $2,591 
 
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax of $(19), $(15) and $8(65)(59)25 
Foreign currency translation adjustment233 327 (494)
Unrealized (losses) gains on cash flow hedges, net of tax of $(3), $(8) and $1(15)(29)
Total other comprehensive income (loss), net of tax153 239 (462)
    
Comprehensive income7,167 3,207 2,129 
Comprehensive income attributable to noncontrolling interests71 18 23 
Comprehensive income attributable to BHE shareholders$7,096 $3,189 $2,106 

The accompanying notes are an integral part of these consolidated financial statements.

134


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)
BHE Shareholders' Equity
Long-termAccumulated
AdditionalIncomeOther
PreferredCommonPaid-inTaxRetainedComprehensiveNoncontrollingTotal
StockStockCapitalReceivableEarningsLoss, NetInterestsEquity
Balance, December 31, 2017$$$6,368 $— $22,206 $(398)$132 $28,308 
Adoption of ASU 2016-01— — — — 1,085 (1,085)— — 
Net income— — 2,568 20 2,588 
Other comprehensive loss— — (462)(462)
Reclassification of long-term income tax receivable— — — (609)— — — (609)
Long-term income tax receivable adjustments— — 152 (135)— — 17 
Common stock purchases— (6)(101)(107)
Distributions— (23)(23)
Other equity transactions— 11 
Balance, December 31, 20186,371 (457)25,624 (1,945)130 29,723 
Net income— — 2,950 18 2,968 
Other comprehensive income— — 239 239 
Long-term income tax
receivable adjustments
— — 33 (73)— — (40)
Common stock purchases— (15)(278)(293)
Distributions— (22)(22)
Other equity transactions— 
Balance, December 31, 20196,389 (530)28,296 (1,706)129 32,578 
Net income— — 6,943 70 7,013 
Other comprehensive income— — 153 153 
Long-term income tax
receivable adjustments
— — (128)— — (128)
Issuance of preferred stock3,750 — — — — — — 3,750 
Preferred stock dividend— — — — (26)— — (26)
Common stock purchases(6)(120)(126)
Distributions— (121)(121)
Purchase of noncontrolling interest— — (5)��� — — (28)(33)
BHE GT&S acquisition - noncontrolling interest— — — — — — 3,916 3,916 
Other equity transactions— (1)
Balance, December 31, 2020$3,750 $$6,377 $(658)$35,093 $(1,552)$3,967 $46,977 

The accompanying notes are an integral part of these consolidated financial statements.

135


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$7,014 $2,968 $2,591 
Adjustments to reconcile net income to net cash flows from operating activities:
(Gains) losses on marketable securities, net(4,797)288 538 
Losses on other items, net54 43 56 
Depreciation and amortization3,455 3,011 2,984 
Allowance for equity funds(165)(173)(104)
Equity loss, net of distributions248 93 45 
Changes in regulatory assets and liabilities(415)153 196 
Deferred income taxes and amortization of investment tax credits1,880 290 
Other, net(77)23 67 
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets(1,318)(372)72 
Derivative collateral, net43 (25)27 
Pension and other postretirement benefit plans(65)(51)(54)
Accrued property, income and other taxes, net(134)(16)199 
Accounts payable and other liabilities501 (26)145 
Net cash flows from operating activities6,224 6,206 6,770 
Cash flows from investing activities:
Capital expenditures(6,765)(7,364)(6,241)
Acquisitions, net of cash acquired(2,397)(27)(106)
Purchases of marketable securities(370)(262)(329)
Proceeds from sales of marketable securities325 238 287 
Equity method investments(2,724)(1,617)(683)
Other, net(1,234)69 83 
Net cash flows from investing activities(13,165)(8,963)(6,989)
Cash flows from financing activities:
Proceeds from BHE senior debt5,212 3,166 
Repayments of BHE senior debt(350)(1,045)
Proceeds from issuance of preferred stock3,750 
Common stock purchases(126)(293)(107)
Proceeds from subsidiary debt2,688 4,699 2,352 
Repayments of subsidiary debt(2,841)(1,914)(2,422)
Net (repayments of) proceeds from short-term debt(939)684 (1,946)
Purchase of noncontrolling interest(33)(131)
Other, net(258)(52)(41)
Net cash flows from financing activities7,103 3,124 (174)
Effect of exchange rate changes15 18 (7)
Net change in cash and cash equivalents and restricted cash and cash equivalents177 385 (400)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period1,268 883 1,283 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$1,445 $1,268 $883 

The accompanying notes are an integral part of these consolidated financial statements.
136


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)Organization and Operations

Berkshire Hathaway Energy Company ("BHE") is a holding company that owns a highly diversified portfolio of locally managed businesses principally engaged in the energy industry (collectively with its subsidiaries, the "Company") and is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").

The Company's operations are organized as 8 business segments: PacifiCorp and its subsidiaries ("PacifiCorp"), MidAmerican Funding, LLC and its subsidiaries ("MidAmerican Funding") (which primarily consists of MidAmerican Energy Company ("MidAmerican Energy")), NV Energy, Inc. and its subsidiaries ("NV Energy") (which primarily consists of Nevada Power Company and its subsidiaries ("Nevada Power") and Sierra Pacific Power Company ("Sierra Pacific")), Northern Powergrid Holdings Company ("Northern Powergrid") (which primarily consists of Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc), BHE Pipeline Group, LLC and its subsidiaries (which primarily consists of BHE GT&S, LLC ("BHE GT&S"), Northern Natural Gas Company ("Northern Natural Gas") and Kern River Gas Transmission Company ("Kern River")), BHE Transmission (which consists of BHE Canada Holdings Corporation ("BHE Canada") (which primarily consists of AltaLink, L.P. ("AltaLink")) and BHE U.S. Transmission, LLC), BHE Renewables (which primarily consists of BHE Renewables, LLC and CalEnergy Philippines) and HomeServices of America, Inc. and its subsidiaries ("HomeServices"). The Company, through these locally managed and operated businesses, owns 4 utility companies in the United States serving customers in 11 states, 2 electricity distribution companies in Great Britain, 5 interstate natural gas pipeline companies and interests in a liquefied natural gas ("LNG") export, import and storage facility in the United States, an electric transmission business in Canada, interests in electric transmission businesses in the United States, a renewable energy business primarily investing in wind, solar, geothermal and hydroelectric projects, the largest residential real estate brokerage firm in the United States and 1 of the largest residential real estate brokerage franchise networks in the United States.

(2)Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of BHE and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. The Consolidated Statements of Operations include the revenue and expenses of any acquired entities from the date of acquisition. The Company consolidates variable interest entities ("VIE") in which it possesses both (i) the power to direct the activities that most significantly impact Bridger Coal'sthe entity's economic performance and (ii) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE. Intercompany accounts and transactions have been eliminated.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are sharednot limited to, the effects of regulation; impairment of goodwill; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; fair value of assets acquired and liabilities assumed in business combinations; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

PacifiCorp, MidAmerican Energy, Nevada Power, Sierra Pacific, BHE GT&S, Northern Natural Gas, Kern River and AltaLink (the "Regulated Businesses") prepare their financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, the Regulated Businesses defer the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

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The Company continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit the Regulated Businesses' ability to recover their costs. The Company believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal, state and provincial levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").

Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Alternative valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Cash Equivalents and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. Restricted amounts are included in restricted cash and cash equivalents and investments and restricted cash and cash equivalents and investments on the Consolidated Balance Sheets.

Investments

    Fixed Maturity Securities

The Company's management determines the appropriate classification of investments in fixed maturity securities at the acquisition date and reevaluates the classification at each balance sheet date. Investments and restricted cash and cash equivalents and investments that management does not intend to use or is restricted from using in current operations are presented as noncurrent on the Consolidated Balance Sheets.

Available-for-sale investments are carried at fair value with realized gains and losses, as determined on a specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of tax. Realized and unrealized gains and losses on fixed maturity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates. Trading investments are carried at fair value with changes in fair value recognized in earnings. Held-to-maturity investments are carried at amortized cost, reflecting the ability and intent to hold the securities to maturity. The difference between the original cost and maturity value of a fixed maturity security is amortized to earnings using the interest method.

Investment gains and losses arise when investments are sold (as determined on a specific identification basis) or are other-than-temporarily impaired with respect to securities classified as available-for-sale. If the value of a fixed maturity investment declines to below amortized cost and the decline is deemed other than temporary, the amortized cost of the investment is reduced to fair value, with a corresponding charge to earnings. Any resulting impairment loss is recognized in earnings if the Company intends to sell, or expects to be required to sell, the debt security before its amortized cost is recovered. If the Company does not expect to ultimately recover the amortized cost basis even if it does not intend to sell the security, the credit loss component is recognized in earnings and any difference between fair value and the amortized cost basis, net of the credit loss, is reflected in other comprehensive income (loss) ("OCI"). For regulated fixed maturity investments, any impairment charge is offset by the establishment of a regulatory asset to the extent recovery in regulated rates is probable.

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    Equity Securities

Investments in equity securities are carried at fair value with changes in fair value recognized in earnings as a component of gains (losses) on marketable securities, net. Prior to January 1, 2018, substantially all of the Company's equity security investments were classified as available-for-sale with changes in fair value recognized in OCI, net of income taxes. All changes in fair value of equity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates.

    Equity Method Investments

The Company utilizes the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when the investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, the Company records the investment at cost and subsequently increases or decreases the carrying value of the investment by the Company's share of the net earnings or losses and OCI of the investee. The Company records dividends or other equity distributions as reductions in the carrying value of the investment. Certain equity investments are presented on the Consolidated Balance Sheets net of related investment tax credits.

Allowance for Credit Losses

Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for credit losses. The allowance for credit losses is based on the Company's assessment of the collectability of amounts owed to the Company by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, the Company primarily utilizes credit loss history. However, the Company may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. As of December 31, 2020 and 2019, the allowance for credit losses totaled $77 million and $44 million, respectively, and is included in trade receivables, net on the Consolidated Balance Sheets.

Derivatives

The Company employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price, interest rate, and foreign currency exchange rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements. Cash collateral received from or paid to counterparties to secure derivative contract assets or liabilities in excess of amounts offset is included in other current assets on the Consolidated Balance Sheets.

Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or cost of sales on the Consolidated Statements of Operations.

For the Company's derivatives not designated as hedging contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities. For the Company's derivatives not designated as hedging contracts and for which changes in fair value are not recorded as regulatory assets and liabilities, unrealized gains and losses are recognized on the Consolidated Statements of Operations as operating revenue for sales contracts; cost of sales and operating expense for purchase contracts and electricity, natural gas and fuel swap contracts; and other, net for interest rate swap derivatives.

For the Company's derivatives designated as hedging contracts, the Company formally assesses, at inception and thereafter, whether the hedging contract is highly effective in offsetting changes in the hedged item. The Company formally documents hedging activity by transaction type and risk management strategy.

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Changes in the estimated fair value of a derivative contract designated and qualified as a cash flow hedge, to the extent effective, are included on the Consolidated Statements of Changes in Equity as AOCI, net of tax, until the contract settles and the hedged item is recognized in earnings. The Company discontinues hedge accounting prospectively when it has determined that a derivative contract no longer qualifies as an effective hedge, or when it is no longer probable that the hedged forecasted transaction will occur. When hedge accounting is discontinued because the derivative contract no longer qualifies as an effective hedge, future changes in the estimated fair value of the derivative contract are charged to earnings. Gains and losses related to discontinued hedges that were previously recorded in AOCI will remain in AOCI until the contract settles and the hedged item is recognized in earnings, unless it becomes probable that the hedged forecasted transaction will not occur at which time associated deferred amounts in AOCI are immediately recognized in earnings.

Inventories

Inventories consist mainly of fuel, which includes coal stocks, stored gas and fuel oil, totaling $382 million and $257 million as of December 31, 2020 and 2019, respectively, and materials and supplies totaling $786 million and $616 million as of December 31, 2020 and 2019, respectively. The cost of materials and supplies, coal stocks and fuel oil is determined primarily using the average cost method. The cost of stored gas is determined using either the last-in-first-out ("LIFO") method or the lower of average cost or market. With respect to inventories carried at LIFO cost, the replacement cost would be $10 million higher and $2 million lower as of December 31, 2020 and 2019, respectively.

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. The Company capitalizes all construction-related materials, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include capitalized interest, including debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable to the Regulated Businesses. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. Additionally, MidAmerican Energy has regulatory arrangements in Iowa in which the carrying cost of certain utility plant has been reduced for amounts associated with electric returns on equity exceeding specified thresholds.
Depreciation and amortization are generally computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by the Company's various regulatory authorities. Depreciation studies are completed by the Regulated Businesses to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.

Generally when the Company retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.

Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, is capitalized by the Regulated Businesses as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC") and the Alberta Utilities Commission ("AUC"). After construction is completed, the Company is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.

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Asset Retirement Obligations

The Company recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. The Company's AROs are primarily related to the decommissioning of nuclear generating facilities and obligations associated with its other generating facilities and offshore natural gas pipelines. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. For the Regulated Businesses, the difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.

Impairment

The Company evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. The impacts of regulation are considered when evaluating the carrying value of regulated assets.

Leases

The Company has non-cancelable operating leases primarily for office space, office equipment, generating facilities, land and rail cars and finance leases consisting primarily of transmission assets, generating facilities and vehicles. These leases generally require the Company to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the joint venture partner. See Note 11corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for discussionvarying periods and escalation clauses for adjusting rent to reflect changes in price indices. The Company does not include options in its lease calculations unless there is a triggering event indicating the Company is reasonably certain to exercise the option. The Company's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of 2017 Tax Reform impactsone year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Leases will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

The Company's leases of generating facilities generally are for the long-term purchase of electric energy, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

The Company's operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Goodwill

Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations. The Company evaluates goodwill for impairment at least annually and completed its annual review as of October 31. When evaluating goodwill for impairment, the Company estimates the fair value of its reporting units. If the carrying amount of a reporting unit, including goodwill, exceeds the estimated fair value, then the excess is charged to earnings as an impairment loss. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. The Company uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings or rate base; and an appropriate discount rate. In estimating future cash flows, the Company incorporates current market information, as well as historical factors. As such, the determination of fair value incorporates significant unobservable inputs. During 2020, 2019 and 2018, the Company did not record any material goodwill impairments.
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The Company records goodwill adjustments for (a) the tax benefit associated with the excess of tax-deductible goodwill over the reported amount of goodwill and (b) changes to the purchase price allocation prior to the end of the measurement period, which is not to exceed one year from the acquisition date.

Revenue Recognition

    Customer Revenue

The Company uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The Company records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations. In the event one of the parties to a contract has performed before the other, the Company would recognize a contract asset or contract liability depending on the relationship between the Company's performance and the customer's payment.

        Energy Products and Services

A majority of the Company's energy revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission, distribution and natural gas and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. The Company's energy revenue that is nonregulated primarily relates to the Company's renewable energy business.

Revenue recognized is equal to what the Company has the right to invoice as it corresponds directly with the value to the customer of the Company's performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $750 million and $638 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

        Real Estate Services

The Company's HomeServices reportable segment consists of separate brokerage, mortgage and franchise businesses. Rates charged for brokerage, mortgage and franchise real estate services are established through contractual arrangements that establish the transaction price and the allocation of the price amongst the separate performance obligations.

The full-service residential real estate brokerage business has performance obligations to deliver integrated real estate services including brokerage services, title and closing services, property and casualty insurance, home warranties, relocation services, and other home-related services to customers. All performance obligations related to the full-service residential real estate brokerage business are satisfied in less than one year at the point in time when a real estate transaction is closed or when services are provided. Commission revenue from real estate brokerage transactions and related amounts due to agents are recognized when a real estate transaction is closed. Title and escrow closing fee revenue from real estate transactions and related amounts due to the title insurer are recognized at closing. Payments for amounts billed are generally due from the customer at closing.

The franchise business operates a network that has performance obligations to provide the right to use certain brand names and other related service marks as well as to provide orientation programs, training and consultation services, advertising programs and other services to its franchisees. The performance obligations related to the franchise business are satisfied over time or when the services are provided. Franchise royalty fees are sales-based variable consideration and are based on a percentage of commissions earned by franchisees on real estate sales, which are recognized when the sale closes. Meetings and training revenue, referral fees, late fees, service fees and franchise termination fees are earned when services have been completed. Payments for amounts billed are generally due from the franchisee within 30 days of billing.


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    Other Revenue

Energy Products and Services

Other revenue consists primarily of revenue related to power purchase agreements not considered Customer Revenue as they are recognized in accordance with ASC 815, "Derivatives and Hedging" and ASC 842, "Leases" and certain non-tariff-based revenue approved by the regulator that is not considered Customer Revenue within ASC 606, "Revenue from Contracts with Customers."

        Real Estate Service

Mortgage and other revenue consists primarily of revenue related to the mortgage business. Mortgage fee revenue consists of amounts earned related to application and underwriting fees, and fees on canceled loans. Fees associated with the origination of mortgage loans are recognized as earned. These amounts are not considered Customer Revenue as they are recognized in accordance with ASC 815, "Derivatives and Hedging," ASC 825, "Financial Instruments" and ASC 860, "Transfers and Servicing."

Unamortized Debt Premiums, Discounts and Debt Issuance Costs

Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.

Foreign Currency

The accounts of foreign-based subsidiaries are measured in most instances using the local currency of the subsidiary as the functional currency. Revenue and expenses of these businesses are translated into United States dollars at the average exchange rate for the period. Assets and liabilities are translated at the exchange rate as of the end of the reporting period. Gains or losses from translating the financial statements of foreign-based operations are included in equity earnings recordedas a component of AOCI. Gains or losses arising from transactions denominated in a currency other than the functional currency of the entity that is party to the transaction are included in earnings.

Income Taxes

The Company's provision for income taxes has been computed on a stand-alone basis. Berkshire Hathaway includes the Company in its consolidated United States federal and Iowa state income tax returns and the majority of the Company's United States federal income tax is remitted to or received from Berkshire Hathaway. The Company records the deferred income tax assets associated with the state of Iowa net operating loss carryforward as a long-term income tax receivable from Berkshire Hathaway as a component of BHE's shareholders' equity due to the long-term related-party nature of the income tax receivable.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using enacted income tax rates expected to be in effect for the year endingin which the differences are expected to reverse. Changes in deferred income tax assets and liabilities associated with components of OCI are charged or credited directly to OCI. Changes in deferred income tax assets and liabilities associated with income tax benefits and expense for certain property-related basis differences and other various differences that the Company's regulated businesses deems probable to be passed on to their customers are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory commissions.

The Company has not established deferred income taxes on its undistributed foreign earnings that have been determined by management to be reinvested indefinitely; however, the Company periodically evaluates its capital requirements. If circumstances change in the future and a portion of the Company's undistributed foreign earnings were repatriated, the dividends may be subject to taxation in the United States but the tax is not expected to be material.

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In determining the Company's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the Company's various regulatory commissions. The Company's income tax returns are subject to continuous examinations by federal, state, local and foreign income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of the Company's federal, state, local and foreign income tax examinations is uncertain, the Company believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on the Company's consolidated financial results. The Company's unrecognized tax benefits are primarily included in accrued property, income and other taxes and other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

(3)    Business Acquisitions

BHE GT&S Acquisition

Transaction Description

On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy, Inc. ("DEI") and Dominion Energy Questar Corporation ("Dominion Questar"), exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "Questar Pipeline Group") (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, after post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments, for 100% of the equity interests of Eastern Gas Transmission and Storage, Inc. ("EGTS") (formerly known as Dominion Energy Transmission, Inc.) and Carolina Gas Transmission, LLC (formerly known as Dominion Energy Carolina Gas Transmission, LLC); 50% of the equity interests of Iroquois Gas Transmission System L.P. ("Iroquois"); and a 25% economic interest in Cove Point LNG, LP ("Cove Point") (formerly known as Dominion Energy Cove Point LNG, LP), consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE became the operator of Cove Point after the GT&S Transaction. The GT&S Transaction received clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR Approval") in October 2020, and approval by the Department of Energy with respect to a change in control of Cove Point and the Federal Communications Commission with respect to the transfer of certain licenses earlier in 2020.

On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in the first half of 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. DEI is also a party to the Q-Pipe Purchase Agreement, as guarantor for certain provisions regarding the Purchase Price Repayment Amount (as defined below) and other matters.

Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration of approximately $1.3 billion, which is included in other current assets on the Consolidated Balance Sheet as of December 31, 2017.2020, to Dominion Questar on November 2, 2020. If the Q-Pipe Transaction does not close, Dominion Questar has agreed to repay all or (depending on the repayment date) substantially all of the Q-Pipe Cash Consideration (the "Purchase Price Repayment Amount") to BHE on or prior to December 31, 2021. If HSR Approval has not been obtained by June 30, 2021, upon BHE's written request, Dominion Questar will seek alternative buyers for all or a material portion of the Questar Pipeline Group (an "Alternative Transaction"). The Purchase Price Repayment Amount may be paid in cash or in shares of common stock, no par value, of DEI, or a combination thereof, subject to certain limitations as to stock repayments set forth in the Q-Pipe Purchase Agreement; provided any payment on or after December 15, 2021 must be paid in cash only.


Restricted
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The assets acquired in the GT&S Transaction include (i) approximately 5,400 miles of operated natural gas transmission, gathering and storage pipelines with approximately 12.5 billion cubic feet ("Bcf") per day of design capacity; (ii) 420 Bcf of operated natural gas storage design capacity, of which 306 Bcf is owned by BHE GT&S; and (iii) a liquefied natural gas ("LNG") export, import and storage facility with LNG storage capacity of approximately 14.6 Bcfe.

On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and Investmentsthe Q-Pipe Cash Consideration.


MidAmerican Energy has established a trustIncluded in BHE's Consolidated Statement of Operations within the BHE Pipeline Group reportable segment for the year ended December 31, 2020, is operating revenue and net income attributable to BHE shareholders of $331 million and $73 million, respectively, as a result of including BHE GT&S from November 1, 2020. Additionally, BHE incurred $9 million of direct transaction costs associated with the GT&S Transaction that are included in operating expense on the Consolidated Statement of Operations for the year ended December 31, 2020.

Preliminary Allocation of Purchase Price

BHE GT&S' assets acquired and liabilities assumed were measured at estimated fair value at closing. The majority of BHE GT&S' operations are subject to the rate-setting authority of the FERC and are accounted for pursuant to GAAP, including the authoritative guidance for regulated operations. The rate-setting and cost-recovery provisions provide for revenues derived from costs, including a return on investment of funds for decommissioningassets and liabilities included in rate base. As such, the Quad Cities Nuclear Station Units 1fair value of BHE GT&S' assets acquired and liabilities assumed subject to these rate-setting provisions are assumed to approximate their carrying values and, therefore, no fair value adjustments have been reflected related to these amounts.

The fair value of BHE GT&S' assets acquired and liabilities assumed not subject to the rate-setting provisions discussed above was determined using an income and cost approach. The income approach is based on significant estimates and assumptions, including Level 3 inputs, which are judgmental in nature. The estimates and assumptions include the projected timing and amount of future cash flows, discount rates reflecting the risk inherent in the future cash flows and future market prices. Additionally, the fair value of long-term debt assumed was determined based on quoted market prices, which is considered a Level 2 ("Quad Cities Station"). These investmentsfair value measurement.

The fair value of certain contracts and property, plant and equipment related to non-regulated operations, certain regulatory assets and other items included in debtrate base, an equity method investment and equity securitiesdeferred income tax amounts are classified as available-for-saleprovisional and are reported atsubject to revision for up to 12 months following the acquisition date until the related valuations are completed. These items may be adjusted through regulatory assets or liabilities, to the extent recoverable in rates, or goodwill provided additional information is obtained about the facts and circumstances that existed as of the acquisition date. Such information includes, but is not limited to, the receipt of further information regarding the fair value. Funds are invested invalue of the trust in accordance with applicable federalcontracts and stateproperty, plant and equipment related to non-regulated operations, the equity method investment guidelines and are restrictedany associated deferred income tax amounts as well as the evolution of the rate-making process for use as reimbursement for costs of decommissioning the Quad Cities Station, which are currently licensed for operation until December 2032.regulated operations.



(8)Short-Term Debt and Credit Facilities
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The following table summarizes BHE'sthe preliminary fair values of the assets acquired and its subsidiaries' availability under their credit facilitiesliabilities assumed as of the acquisition date (in millions):
Fair Value
Current assets, including cash and cash equivalents of $104$569 
Property, plant and equipment9,254 
Goodwill1,732 
Regulatory assets108 
Deferred income taxes275 
Other long-term assets1,424 
Total assets13,362 
Current liabilities, including current portion of long-term debt of $1,2001,567 
Long-term debt, less current portion4,415 
Regulatory liabilities661 
Other long-term liabilities289 
Total liabilities6,932 
Noncontrolling interest3,916 
Net assets acquired$2,514 

Goodwill

The excess of the purchase price paid over the estimated fair values of the identifiable assets acquired and liabilities assumed totaled $1.7 billion and is reflected as goodwill in the BHE Pipeline Group reportable segment. The goodwill reflects the value paid primarily for the long-term opportunity to improve operating results through the efficient management of operating expenses and the deployment of capital. Goodwill is not amortized, but rather is reviewed annually for impairment or more frequently if indicators of impairment exist. For income tax purposes, the GT&S Acquisition is treated as a deemed asset acquisition resulting from tax elections being made, therefore all tax goodwill is deductible. Due to book and tax basis differences of certain items, book and tax goodwill will differ. The amount of tax goodwill is approximately $0.9 billion and will be amortized over 15 years.

Pro Forma Financial Information

The following unaudited pro forma financial information reflects the consolidated results of operations of BHE and the amortization of the purchase price adjustments assuming the acquisition had taken place on January 1, 2019, excluding non-recurring transaction costs incurred by BHE during 2020 (in millions):
20202019
Operating revenue$22,581 $21,979 
Net income attributable to BHE shareholders$6,800 $3,271 


146


(4)Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable
Life20202019
Regulated assets:
Utility generation, transmission and distribution systems5-80 years$86,730 $81,127 
Interstate natural gas pipeline assets3-80 years16,667 8,165 
103,397 89,292 
Accumulated depreciation and amortization(30,662)(26,353)
Regulated assets, net72,735 62,939 
Nonregulated assets:
Independent power plants5-30 years7,012 6,983 
Other assets3-40 years5,659 1,834 
12,671 8,817 
Accumulated depreciation and amortization(2,586)(2,183)
Nonregulated assets, net10,085 6,634 
Net operating assets82,820 69,573 
Construction work-in-progress3,308 3,732 
Property, plant and equipment, net$86,128 $73,305 
     MidAmerican NV Northern      
 BHE PacifiCorp Funding Energy Powergrid AltaLink Other 
Total(1)
2017:               
Credit facilities(2)
$3,600
 $1,000
 $909
 $650
 $203
 $1,054
 $1,635
 $9,051
Less:               
Short-term debt(3,331) (80) 
 
 
 (345) (732) (4,488)
Tax-exempt bond support and letters of credit(7) (130) (370) (80) 
 (7) 
 (594)
Net credit facilities$262
 $790
 $539
 $570
 $203
 $702
 $903
 $3,969
                
2016:               
Credit facilities$2,000
 $1,000
 $609
 $650
 $185
 $986
 $915
 $6,345
Less:               
Short-term debt(834) (270) (99) 
 
 (289) (377) (1,869)
Tax-exempt bond support and letters of credit(7) (142) (220) (80) 
 (8) 
 (457)
Net credit facilities$1,159
 $588
 $290
 $570
 $185
 $689
 $538
 $4,019


(1)The table does not include unused credit facilities and letters of credit for investments that are accounted for under the equity method.

(2)Includes amounts borrowed on a short-term loan totaling $600 million at BHE that was repaid in full in January 2018.
As of December 31, 2017, the Company was in compliance with the covenants of its credit facilitiesConstruction work-in-progress includes $3.2 billion and letter of credit arrangements.


BHE

BHE has a $2.0$3.6 billion unsecured credit facility expiring in June 2020 with a one-year extension option subject to lender consent and a $1.0 billion unsecured credit facility expiring in May 2018. These credit facilities, which are for general corporate purposes and also support BHE's commercial paper program and provide for the issuance of letters of credit, have variable interest rates based on the Eurodollar rate or a base rate, at BHE's option, plus a spread that varies based on BHE's credit ratings for its senior unsecured long-term debt securities.

As of December 31, 2017 and 2016, the weighted average interest rate on commercial paper borrowings outstanding was 1.74% and 0.88%, respectively. These credit facilities require that BHE's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.70 to 1.0 as of the last day of each quarter.

As of December 31, 2017 and 2016, BHE had $96 million and $123 million, respectively, of letters of credit outstanding, of which $7 million as of December 31, 20172020 and 2016 were issued under the credit facilities. These letters of credit primarily support power purchase agreements and debt service requirements at certain subsidiaries of BHE Renewables, LLC expiring through December 2018 and have provisions that automatically extend the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior2019, respectively, related to the expiration date.construction of regulated assets.


As
(5)Jointly Owned Utility Facilities

Under joint facility ownership agreements, the Domestic Regulated Businesses, as tenants in common, have undivided interests in jointly owned generation, transmission, distribution and pipeline common facilities. The Company accounts for its proportionate share of each facility and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include the Company's share of the expenses of these facilities.


147


The amounts shown in the table below represent the Company's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2017, BHE had a $6002020 (dollars in millions):
AccumulatedConstruction
CompanyFacility InDepreciation andWork-in-
ShareServiceAmortizationProgress
PacifiCorp:
Jim Bridger Nos. 1-467 %$1,485 $714 $15 
Hunter No. 194 486 203 
Hunter No. 260 305 127 
Wyodak80 476 254 
Colstrip Nos. 3 and 410 255 145 
Hermiston50 184 93 
Craig Nos. 1 and 219 368 305 
Hayden No. 125 75 42 
Hayden No. 213 44 25 
Transmission and distribution facilitiesVarious857 263 100 
Total PacifiCorp4,535 2,171 126 
MidAmerican Energy:
Louisa No. 188 %853 483 
Quad Cities Nos. 1 and 2(1)
25 731 437 10 
Walter Scott, Jr. No. 379 939 498 
Walter Scott, Jr. No. 4(2)
60 267 130 
George Neal No. 441 318 179 
Ottumwa No. 152 669 247 
George Neal No. 372 524 262 
Transmission facilitiesVarious261 101 
Total MidAmerican Energy4,562 2,337 32 
NV Energy:
Navajo11 %10 
Valmy50 390 291 
Transmission facilitiesVarious70 31 
On Line Transmission Line25 160 27 
Total NV Energy630 353 
BHE Pipeline Group:
Ellisburg Pool39 %28 10 
Ellisburg Station50 25 
Harrison50 53 16 
Leidy50 133 44 
Oakford50 200 64 
Common FacilitiesVarious277 165 
Total BHE Pipeline Group716 306 11 
Total$10,443 $5,167 $172 
(1)Includes amounts related to nuclear fuel.
(2)Facility in-service and accumulated depreciation and amortization amounts are net of credits applied under Iowa revenue sharing arrangements totaling $509 million term loan outstanding expiring in June 2018. and $112 million, respectively.

148


(6)    Leases

The term loan had a variable interest rate basedfollowing table summarizes the Company's leases recorded on the Eurodollar rate, plus a fixed spread, or a base rate, at BHE's option. In January 2018, BHE repaidConsolidated Balance Sheet (in millions):
As of
December 31, 2020December 31, 2019
Right-of-use assets:
Operating leases$517 $525 
Finance leases501 504 
Total right-of-use assets$1,018 $1,029 
Lease liabilities:
Operating leases$569 $577 
Finance leases514 519 
Total lease liabilities$1,083 $1,096 

The following table summarizes the term loan at par plus accrued interest. AsCompany's lease costs (in millions):
Years Ended
December 31, 2020December 31, 2019
Variable$592 $623 
Operating151 170 
Finance:
Amortization18 16 
Interest40 41 
Short-term20 
Total lease costs$821 $857 
Weighted-average remaining lease term (years):
Operating leases7.47.6
Finance leases27.528.8
Weighted-average discount rate:
Operating leases4.5 %5.2 %
Finance leases8.5 %8.6 %

The following table summarizes the Company's supplemental cash flow information relating to leases (in millions):
Years Ended
December 31, 2020December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$(152)$(153)
Operating cash flows from finance leases(40)(42)
Financing cash flows from finance leases(24)(19)
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases$83 $82 
Finance leases19 14 

149


The Company has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$152 $81 $233 
2022125 74 199 
202393 63 156 
202466 63 129 
202550 62 112 
Thereafter199 673 872 
Total undiscounted lease payments685 1,016 1,701 
Less - amounts representing interest(116)(502)(618)
Lease liabilities$569 $514 $1,083 

(7)Regulatory Matters

Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future regulated rates. The Company's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 2017,(in millions):
Weighted
Average
Remaining Life20202019
Employee benefit plans(1)
15 years$722 $667 
Asset retirement obligations13 years640 445 
Asset disposition costsVarious347 391 
Deferred income taxes(2)
Various283 223 
Demand side management10 years197 
Deferred net power costs1 year139 110 
Deferred operating costs11 years124 134 
OtherVarious988 902 
Total regulatory assets$3,440 $2,881 
Reflected as:
Current assets$283 $115 
Noncurrent assets3,157 2,766 
Total regulatory assets$3,440 $2,881 
(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.
(2)Amounts primarily represent income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the interest ratetemporary differences reverse.

The Company had regulatory assets not earning a return on the outstanding term loan was 2.27%.

PacifiCorp

PacifiCorp has a $600 million unsecured credit facility expiring in June 2020 with two one-year extension options subject to lender consentinvestment of $1.6 billion and a $400 million unsecured credit facility expiring in June 2020 with a one-year extension option subject to lender consent. These credit facilities, which support PacifiCorp's commercial paper program, certain series of its tax-exempt bond obligations and provide for the issuance of letters of credit, have variable interest rates based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities.

As$1.4 billion as of December 31, 20172020 and 2016,2019, respectively.

150


Regulatory Liabilities

Regulatory liabilities represent income to be recognized or amounts to be returned to customers in future periods. The Company's regulatory liabilities reflected on the weighted average interest rate on commercial paper borrowings outstanding was 1.83% and 0.96%, respectively. These credit facilities require that PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 asConsolidated Balance Sheets consist of the last day of each quarter.

Asfollowing as of December 31 2017(in millions):
Weighted
Average
Remaining Life20202019
Deferred income taxes(1)
Various$3,600 $3,611 
Cost of removal(2)
26 years2,435 2,370 
Asset retirement obligations31 years305 241 
Levelized depreciation29 years281 304 
OtherVarious854 785 
Total regulatory liabilities$7,475 $7,311 
Reflected as:
Current liabilities$254 $211 
Noncurrent liabilities7,221 7,100 
Total regulatory liabilities$7,475 $7,311 

(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to certain property-related basis differences and 2016, PacifiCorp had $230 millionother various differences that were previously passed on to customers and $269 million, respectively,will be included in regulated rates when the temporary differences reverse.
(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of fully available lettersARO liabilities, of credit issued under committed arrangements. Asremoving regulated property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.

151


(8)Investments and Restricted Cash and Cash Equivalents and Investments

Investments and restricted cash and cash equivalents and investments consists of the following as of December 31 2017(in millions):
20202019
Investments:
BYD Company Limited common stock$5,897 $1,122 
Rabbi trusts440 410 
Other263 187 
Total investments6,600 1,719 
  
Equity method investments:
BHE Renewables tax equity investments5,626 3,130 
Electric Transmission Texas, LLC594 555 
Iroquois Gas Transmission System, L.P.580 
JAX LNG, LLC75 
Bridger Coal Company74 81 
Other118 181 
Total equity method investments7,067 3,947 
Restricted cash and cash equivalents and investments:  
Quad Cities Station nuclear decommissioning trust funds676 599 
Other restricted cash and cash equivalents155 230 
Total restricted cash and cash equivalents and investments831 829 
  
Total investments and restricted cash and cash equivalents and investments$14,498 $6,495 
Reflected as:
Other current assets$178 $240 
Noncurrent assets14,320 6,255 
Total investments and restricted cash and cash equivalents and investments$14,498 $6,495 

Investments

BHE's investment in BYD Company Limited common stock is accounted for as a marketable security with changes in fair value recognized in net income.

Rabbi trusts primarily hold corporate-owned life insurance on certain current and 2016, $216 millionformer key executives and $255 million, respectively,directors. The Rabbi trusts were established to hold investments used to fund the obligations of these letters of credit support PacifiCorp's variable-rate tax-exempt bond obligationsvarious nonqualified executive and expire through March 2019director compensation plans and $14 million support certain transactions required by third parties and have provisions that automatically extendto pay the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior to the expiration date.

MidAmerican Funding

MidAmerican Energy has a $900 million unsecured credit facility expiring in June 2020 with two one-year extension options subject to lender consent. The credit facility, which supports MidAmerican Energy's commercial paper program and its variable-rate tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread that varies based on MidAmerican Energy's credit ratings for senior unsecured long-term debt securities.

As of December 31, 2016, the weighted average interest rate on commercial paper borrowings outstanding was 0.73%. The credit facility requires that MidAmerican Energy's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 ascosts of the last daytrusts. The amount represents the cash surrender value of each quarter.


NV Energy

Nevada Power has a $400 million secured credit facility expiring in June 2020 and Sierra Pacific has a $250 million secured credit facility expiring in June 2020 each with two one-year extension options subject to lender consent. These credit facilities, which are for general corporate purposes and provide for the issuance of letters of credit, have a variable interest rate based on the Eurodollar rate or a base rate, at eachall of the Nevada Utilities' option, plus a spread that varies basedpolicies included in the Rabbi trusts, net of amounts borrowed against the cash surrender value.

Gains (losses) on eachmarketable securities, net recognized during the period consists of the Nevada Utilities' credit ratings for its senior secured long‑term debt securities. Amounts due under each credit facility are collateralized by each of the Nevada Utilities' general and refunding mortgage bonds. These credit facilities require that each of the Nevada Utilities' ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.following (in millions):

Years Ended December 31,
20202019
Unrealized gains (losses) recognized on marketable securities still held at the reporting date$4,791 $(290)
Net gains recognized on marketable securities sold during the period
Gains (losses) on marketable securities, net$4,797 $(288)
Northern Powergrid

152

Northern Powergrid has a £150 million unsecured credit facility expiring in April 2020. The credit facility has a variable interest rate based on sterling London Interbank Offered Rate ("LIBOR") plus a spread that varies based on its credit ratings. The credit facility requires that the ratio of consolidated senior total net debt, including current maturities, to regulated asset value not exceed 0.8 to 1.0 at Northern Powergrid and 0.65 to 1.0 at Northern Powergrid (Northeast) Limited and Northern Powergrid (Yorkshire) plc as of June 30 and December 31. Northern Powergrid's interest coverage ratio shall not be less than 2.5 to 1.0.


AltaLink


ALPAltaLink is regulated by the AUC, pursuant to the Electric Utilities Act (Alberta), the Public Utilities Act (Alberta), the Alberta Utilities Commission Act (Alberta) and the Hydro and Electric Energy Act (Alberta). The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems. The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of AltaLink's activities, including its tariffs, rates, construction, operations and financing.

The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements, capital expenditure prudency and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable, and approval of the transmission tariff rates of regulated transmission providers paid by the AESO, which is the independent transmission system operator in Alberta, Canada that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulation and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.

AltaLink's tariffs are regulated by the AUC under the provisions of the Electric Utilities Act (Alberta) in respect of rates and terms and conditions of service. The Electric Utilities Act (Alberta) and related regulations require the AUC to consider that it is in the public interest to provide consumers the benefit of unconstrained transmission access to competitive generation and the wholesale electricity market. In regulating transmission tariffs, the AUC must facilitate sufficient investment to ensure the timely upgrade, enhancement or expansion of transmission facilities, and foster a stable investment climate and a continued stream of capital investment for the transmission system.

51


Under the Electric Utilities Act (Alberta), AltaLink prepares and files applications with the AUC for approval of tariffs to be paid by the AESO for the use of its transmission facilities, and the terms and conditions governing the use of those facilities. The AUC reviews and approves such tariff applications based on a cost-of-service regulatory model under a forward test year basis. Under this model, the AUC provides AltaLink with a reasonable opportunity to (i) earn a fair return on equity; and (ii) recover its forecast costs, including operating expenses, depreciation, borrowing costs and taxes (including deemed income taxes) associated with its regulated transmission business. The AUC must approve tariffs that are just, reasonable and not unduly preferential, arbitrary or unjustly discriminatory. AltaLink's transmission tariffs are not dependent on the price or volume of electricity transported through its transmission system.

The AESO is an independent system operator in Alberta, Canada that oversees the Alberta Interconnected Electric System ("AIES") and wholesale electricity market. The AESO is responsible for directing the safe, reliable and economic operation of the AIES, including long-term transmission system planning. AltaLink and the other transmission facility owners receive substantially all of their transmission tariff revenues from the AESO. The AESO, in turn, charges wholesale tariffs, approved by the AUC, in a manner that promotes fair and open access to the AIES and facilitates a competitive market for the purchase and sale of electricity. The AESO monitors compliance with approved reliability standards, which are enforced by the Market Surveillance Administrator, which may impose penalties on transmission facility owners for non-compliance with the approved reliability standards.

The AESO determines the need and plans for the expansion and enhancement of the transmission system in Alberta in accordance with applicable law and reliability standards. The AESO's responsibilities include long-term transmission planning and management, including assessing the current and future transmission system capacity needs of market participants. When the AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application to the AUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an application to the AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the geographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that certain transmission projects may be subject to a competitive process open to qualified bidders.

Independent Power Projects

The Yuma, Cordova, Saranac, Power Resources, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Jumbo Road, Marshall, Grande Prairie, Walnut Ridge, Pinyon Pines, Santa Rita, Alamo 6 and Pearl independent power projects are Exempt Wholesale Generators ("EWG") under the Energy Policy Act, while the Community Solar Gardens, Imperial Valley and Wailuku independent power projects are currently certified as Qualifying Facilities ("QF") under the Public Utility Regulatory Policies Act of 1978. Both EWGs and QFs are generally exempt from compliance with extensive federal and state regulations that control the financial structure of an electric generating plant and the prices and terms at which electricity may be sold by the facilities.

The Yuma, Cordova, Saranac, Imperial Valley, Topaz, Agua Caliente, Solar Star, Bishop Hill II, Marshall, Grande Prairie, Walnut Ridge and Pinyon Pines independent power projects have obtained authority from the FERC to sell their power using market-based rates. This authority to sell electricity in wholesale electricity markets at market-based rates is subject to triennial reviews conducted by the FERC. Accordingly, the respective independent power projects are required to submit triennial filings to the FERC that demonstrate a lack of market power over sales of wholesale electricity and electric generation capacity in their respective market areas. The Pinyon Pines, Solar Star, Topaz and Yuma independent power projects and power marketer CalEnergy, LLC file together for market power study purposes of the FERC-defined Southwest Region. The most recent triennial filing for the Southwest Region was made in June 2019 and an order accepting it was issued in March 2020. The Cordova and Saranac independent power projects and power marketer CalEnergy, LLC file together with MidAmerican Energy and certain affiliates for market power study purposes of the FERC-defined Northeast Region. The most recent triennial filing for the Northeast Region was made in June 2020 and is awaiting FERC action. The Bishop Hill II and Walnut Ridge independent power projects and power marketer CalEnergy, LLC file together with MidAmerican Energy and certain affiliates for market power study purposes of the FERC-defined Central Region. The most recent triennial filing for the Central Region was made in December 2020 and is awaiting FERC action. The Marshall and Grande Prairie independent power projects and power marketer CalEnergy, LLC file together for market power study purposes in the FERC-defined Southwest Power Pool Region. The most recent triennial filing for the Southwest Power Pool Region was made in December 2018 and an order accepting it was issued July 2019.


52


The entire output of Jumbo Road, Santa Rita, Alamo 6, Pearl and Power Resources is within the Electric Reliability Council of Texas ("ERCOT") and market-based authority is not required for such sales solely within ERCOT as the ERCOT market is not a FERC-jurisdictional market. Similarly, Wailuku sells its output solely to the Hawaii Electric Light Company within the Hawaii electric grid, which is not a FERC-jurisdictional market and therefore, Wailuku does not require market-based rate authority.

EWGs are permitted to sell capacity and electricity only in the wholesale markets, not to end users. Additionally, utilities are required to purchase electricity produced by QFs at a price that does not exceed the purchasing utility's "avoided cost" and to sell back-up power to the QFs on a non-discriminatory basis, unless they have successfully petitioned the FERC for an exemption from this purchase requirement. Avoided cost is defined generally as the price at which the utility could purchase or produce the same amount of power from sources other than the QF on a long-term basis. The Energy Policy Act eliminated the purchase requirement for utilities with respect to new contracts under certain conditions. New QF contracts are also subject to FERC rate filing requirements, unlike QF contracts entered into prior to the Energy Policy Act. FERC regulations also permit QFs and utilities to negotiate agreements for utility purchases of power at rates other than the utilities' avoided cost.

The Philippine Congress has passed the Electric Power Industry Reform Act of 2001 ("EPIRA"), which is aimed at restructuring the Philippine power industry, privatizing the National Power Corporation ("NPC") and introducing a competitive electricity market, among other initiatives. Under the EPIRA, Power Sector Assets and Liabilities Management Corporation ("PSALM") is tasked, among others, to dispose of and privatize the assets of NPC. PSALM recently issued statements that public bidding of the administration and management of the contracted energy of the Casecnan Project's energy conversion and power purchase agreement to interested parties will be made in 2021. It is still not known what impact, if any, the implementation of this change in independent power producer administrator may have on the Casecnan Project's future operations.

Residential Real Estate Brokerage Company

HomeServices and its operating subsidiaries are regulated by the United States Consumer Financial Protection Bureau which enforces the Truth In Lending Act ("TILA"), the Equal Credit Opportunity Act ("ECOA") and the Real Estate Settlement Procedures Act ("RESPA"); by the United States Federal Trade Commission with respect to certain franchising activities; by the United States Department of Housing and Urban Development, which enforces the Fair Housing Act ("FHA"); and by state agencies where its subsidiaries operate. TILA and ECOA regulate lending practices. FHA prohibits housing-related discrimination on the basis of race, color, national origin, religion, sex, familial status, and disability. RESPA regulates real estate settlement services including real estate closing practices, lender servicing and escrow account practices and business relationships among settlement service providers and third parties to the transaction.

REGULATORY MATTERS

In addition to the discussion contained herein regarding regulatory matters, refer to "General Regulation" in Item 1 of this Form 10-K for further information regarding the general regulatory framework.

PacifiCorp

Multi-State Process

In November 2019, PacifiCorp completed negotiations with the Multi-State Process Workgroup, a working group of stakeholders consisting of utility regulatory agencies, customers, and certain others potentially affected by inter-jurisdictional allocation procedures, resulting in a new cost allocation agreement, the 2020 Protocol. The agreement establishes a common allocation method to be used in Utah, Oregon, Wyoming, Idaho and California through 2023 and a separate method for Washington during the same time period that is based on a system approach for cost allocations and provides a path forward for Washington to achieve compliance with Washington's Clean Energy Transformation Act. The agreement establishes a process for the 2020 Protocol signatories to resolve remaining outstanding cost-allocations to be implemented in a new, permanent and long-term allocation method at the end of the four years. In December 2019, PacifiCorp submitted the 2020 Protocol to the UPSC, the OPUC, the WPSC and the IPUC for approval. WUTC approval of the agreement was sought in the general rate case filing also submitted in December 2019. In 2020, PacifiCorp received approval of the 2020 Protocol from the UPSC, the OPUC, the WPSC, the IPUC and the WUTC. Approval from the CPUC will be requested in a future general rate case.


53


Depreciation Rate Study

In September 2018, PacifiCorp filed applications for depreciation rate changes with the UPSC, the OPUC, the WPSC, the WUTC and the IPUC based on PacifiCorp's 2018 depreciation rate study, requesting the rates become effective January 1, 2021. Based on the proposed depreciation rates, annual depreciation expense would have increased approximately $300 million. Updates since September 2018 include the filing of PacifiCorp's 2020 decommissioning studies in which a third‑party consultant was engaged to estimate decommissioning costs associated with coal-fueled generating facilities and removal of Cholla Unit 4. Depreciation rates based on the outcomes described below were effective January 1, 2021, resulting in an estimated increase in depreciation expense of $176 million in 2021, based on historical balances.

In March 2020, PacifiCorp filed a partial settlement stipulation with the UPSC to which all but one intervening party agreed. The partial settlement adopts certain aspects of the 2018 depreciation rate study as filed for coal-fueled generating facilities and established a secondary phase to the proceeding to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities and equipment replaced as a result of PacifiCorp's wind repowering projects. In April 2020, the UPSC approved the stipulation as filed. In December 2020, the UPSC issued an order regarding the secondary phase which approved PacifiCorp's proposed accounting treatment related to the retired wind assets and supports recovery of incremental decommissioning costs reflected in the third-party study over the remaining depreciable lives of the coal-fueled generating facilities as proposed in the general rate case.

In August 2020, PacifiCorp filed an all‑party stipulation with the OPUC regarding the depreciation study with depreciation rates for coal-fueled generating facilities and associated incremental decommissioning costs reflected in the third-party study to be addressed separately in the general rate case proceeding. In December 2020, the OPUC approved the stipulation effective January 1, 2021. The OPUC's December 2020 general rate case order accepted PacifiCorp's proposed depreciable lives for the coal-fueled generating facilities but deferred a decision on rate treatment of the incremental decommissioning costs.

In April 2020, PacifiCorp filed a stipulation with the WPSC resolving all issues addressed in PacifiCorp's depreciation rate study application with ratemaking treatment of certain matters to be addressed in PacifiCorp's general rate case, including depreciation for coal-fueled generating facilities and associated incremental decommissioning costs reflected in decommissioning studies and certain matters related to the repowering of PacifiCorp's wind-powered generating facilities. The stipulation was approved by the WPSC during a hearing in August 2020 and a subsequent written order in December 2020. The general rate case hearing was rescheduled for February 2021. As a result of the hearing date change, PacifiCorp filed an application in October 2020 with the WPSC requesting authorization to defer costs associated with impacts of the depreciation study. A hearing for this deferral application is scheduled to occur in July 2021.

In July 2020, PacifiCorp filed a full settlement stipulation with the WUTC resolving all issues in the proceeding. The WUTC approved the stipulation in December 2020, excluding aspects related to certain coal-fueled generating facilities that were separately addressed in the general rate case. The general rate case settlement authorizes accelerated depreciation of certain coal-fueled generating facilities, as well as recovery of incremental decommissioning costs reflected in the third-party study over a ten-year period.

In June 2020, PacifiCorp filed a partial settlement stipulation with the IPUC to which all but one intervening party agreed. The partial settlement adopts certain aspects of the 2018 depreciation rate study as filed for coal-fueled generating facilities and proposes a secondary phase to the proceeding be established in order to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities. In August 2020, the IPUC approved the stipulation and authorized a secondary phase to the proceeding to address decommissioning costs for PacifiCorp's coal‑fueled generating facilities.

As a result of delaying the general rate case filing in Idaho for 2021 for an anticipated effective date of January 1, 2022, PacifiCorp reached a separate agreement with parties to defer the incremental depreciation expense from the 2018 depreciation study for one year, during 2021. In October 2020, a settlement stipulation was filed with the IPUC related to the secondary phase of the depreciation study to defer the incremental decommissioning expense from the 2020 decommissioning studies for one year, during 2021, consistent with the stipulated treatment of the incremental depreciation expense from the 2018 depreciation study, as a result of delaying the general rate case filing. The IPUC approved the stipulation as filed in December 2020.


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Retirement Plan Settlement Charge

During 2018, the PacifiCorp Retirement Plan incurred a settlement charge as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018. In December 2018, PacifiCorp submitted filings with the UPSC, the OPUC, the WPSC and the WUTC seeking approval to defer the settlement charge. Also in December 2018, an advice letter was filed with the CPUC requesting a memorandum account to track the costs associated with pension and postretirement settlements and curtailments. In October 2019, the request for a memorandum account was re-filed as an application with the CPUC. In 2019, the WUTC approved the requested deferral, while the UPSC and the WPSC denied the request. In January 2020, the OPUC issued an order denying PacifiCorp's request. In April 2020, the CPUC approved the request to establish a memorandum account effective December 31, 2018.

In its December 2020 generate rate case order, the UPSC ordered PacifiCorp to initiate a proceeding by March 2021 to establish a balancing account for pension settlement losses. While the OPUC did not authorize specific treatment for pension settlement losses in its December 2020 general rate case order, it did indicate that it is receptive to PacifiCorp filing a deferral request, should a pension settlement loss be triggered in the 2021 test period for the general rate case proceeding.

COVID-19

In March and April 2020, PacifiCorp filed applications requesting authorization to defer costs associated with COVID‑19 with the UPSC, the OPUC, the WPSC, the WUTC and the IPUC. In April 2020, as ordered by the CPUC, PacifiCorp filed to establish the COVID‑19 Pandemic Protections Memorandum Account. The memorandum account was approved in September 2020, retroactive to March 4, 2020. In April 2020, the WPSC approved PacifiCorp's application to defer costs associated with COVID‑19, subject to a public notice period, and required associated benefits arising from COVID‑19 to be offset against the deferred costs. During the public notice period, one party to the proceeding filed a petition for a rehearing of the matter. The WPSC scheduled a hearing for this matter in April 2021. In July, September and October 2020, the IPUC, the UPSC and the OPUC, respectively, approved PacifiCorp's applications to defer costs associated with COVID‑19, requiring associated benefits arising from COVID‑19 to be offset against the deferred costs. In November 2020, PacifiCorp filed a revised petition consistent with the requirements set forth in the WUTC's adopted term sheet in its generic COVID-19 proceeding. In December 2020, the WUTC approved PacifiCorp's revised petition. In February 2021, PacifiCorp filed a motion to withdraw the application from the WPSC, after reaching an agreement with parties to the proceeding.

Utah

In March 2019, PacifiCorp filed its annual EBA application with the UPSC requesting recovery of $24 million, or 1.1%, of deferred net power costs from customers for the period January 1, 2018 through December 31, 2018, reflecting the difference between base and actual net power costs in the 2018 deferral period. The rate change was approved by the UPSC effective May 1, 2019 on an interim basis. Following a decision from the Utah Supreme Court in June 2019 that found the UPSC did not have authority to approve interim rates in conjunction with the EBA, the UPSC directed PacifiCorp to terminate the interim rate change pending final approval in the proceeding. The hearing on final approval was held in February 2020, and the UPSC issued an order approving full recovery of the 2018 deferred costs beginning April 1, 2020.

In May 2019, Utah House Bill 411 went into effect. The legislation, among other things, authorizes the UPSC to approve a renewable energy program for communities seeking 100% renewable electricity. Participating cities were required to adopt a resolution with a goal to be on 100% renewable electricity by 2030 before December 31, 2019. Twenty-four communities in Utah, including Salt Lake City, passed the resolution before December 31, 2019. Customers within a participating community may opt out of the program and maintain existing rates. Rates approved for the program may not result in any shift of costs or benefits to nonparticipating customers. The program details, including costs, are being developed with the communities for a future filing with the UPSC.

In March 2020, PacifiCorp filed its annual EBA application with the UPSC requesting recovery of $37 million, or 1.0%, of deferred power costs from customers for the period January 1, 2019 through December 31, 2019, reflecting the difference between base and actual net power costs in the 2019 deferral period. A hearing was held in February 2021 for rates effective March 1, 2021.


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In March 2020, Utah's governor signed Utah House Bill 66, Wildland Fire Planning and Cost Recovery Amendments, which requires PacifiCorp to prepare a wildfire protection plan to be approved by the UPSC. All investments, including the cost of capital, made to implement an approved plan are recoverable in rates. The bill also provides a potential liability safe harbor if PacifiCorp is in compliance with its approved wildfire mitigation plan. In addition, the legislation clarifies the standard for real property losses and eliminates the current standard of treble damages awarded for tree losses. The first wildland fire protection plan was filed with the UPSC in June 2020 and was approved by the UPSC in October 2020. As part of the 2020 general rate case, the UPSC approved a Wildland Fire Mitigation Balancing Account to track and defer costs associated with the implementation of the wildland fire protection plan that are not recovered through base rates.

In March 2020, Utah's governor signed Utah House Bill 396, Electric Vehicle Charging Infrastructure Amendments, which directs the UPSC to enable PacifiCorp to recover in rates up to $50 million of electric vehicle infrastructure. The legislation also prohibits a third‑party from generating electricity onsite to directly resell to customers through electric vehicle charging infrastructure.

In May 2020, PacifiCorp filed a general rate case with the UPSC requesting an increase in base rates of $96 million, or 4.8%, which PacifiCorp proposed to be implemented over a three-year period with 2.6% effective January 1, 2021, 1.1% effective January 1, 2022 and 1.1% effective January 1, 2023 reflecting the refunding of a portion of 2017 Tax Reform benefits in 2021 and 2022. The proposed increase reflected recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs associated with coal-fueled generating facilities, a wildland fire mitigation cost tracking mechanism to implement Utah House Bill 66, and rate design modernization proposals. The application also requested authorization to recover costs associated with the early retirement of Cholla Unit 4. The proposed increase reflected several rate mitigation measures that included use of the balance in the Utah Sustainable Transportation and Energy Plan ("STEP") regulatory accounts to accelerate depreciation of the undepreciated plant balance of certain coal-fueled generation units, including Cholla Unit 4, and the use of a portion of the excess deferred income taxes associated with 2017 Tax Reform to accelerate recognition of certain regulatory assets and further depreciate the Dave Johnston plant balance. In October 2020, PacifiCorp filed rebuttal testimony, modifying its request to an increase in base rates of $72 million, or 3.6%, primarily due to a reduction to the requested return on equity. In December 2020, the UPSC issued an order approving an increase in base rates of $31 million, or 1.6%, effective January 1, 2021 reflecting a reduction in PacifiCorp's requested return on equity and before considering refunds of remaining 2017 Tax Reform benefits. The UPSC approved PacifiCorp's proposed rate mitigation strategy to refund remaining 2017 Tax Reform benefits over two years, resulting in an overall net decrease of $15 million, or 0.7%, effective January 1, 2021 followed by a 1.1% increase on January 1, 2022 and another 1.1% increase on January 1, 2023. The order accepted PacifiCorp's proposal to use Utah STEP regulatory balances and excess deferred income taxes associated with 2017 Tax Reform to accelerate depreciation of Cholla Unit 4 and portions of other coal-fueled generating plant balances, as well as to accelerate recognition of certain regulatory asset balances. The order also authorized PacifiCorp to establish a deferral account for costs associated with the early retirement of Cholla Unit 4 and a Wildland Fire Mitigation Balancing Account as described under "Adjustment Mechanisms" in Item 1 of this Form 10-K. In addition, the UPSC ordered PacifiCorp to initiate a proceeding by March 2021 to establish a balancing account for pension settlement losses.

Oregon

In December 2018, PacifiCorp filed a 2019 RAC application requesting recovery of costs associated with repowering of approximately 900 MWs of company-owned and installed wind facilities expected to be completed in 2019. The associated net power cost and PTC benefits were previously included in the 2019 TAM. An all-party settlement was approved by the OPUC in September 2019, providing for a total rate increase of $24 million, or 1.8%, subject to final cost updates. The first rate increase of $9 million, or 0.7%, was effective October 1, 2019 for four repowered facilities, the second rate increase of $1 million, or 0.1%, was effective December 1, 2019 for one repowered facility and the third rate increase of $5 million, or 0.4%, was effective January 1, 2020 for two repowered facilities. A final rate increase of $5 million, or 0.4%, was effective April 1, 2020 for the two remaining repowered facilities that were placed in service by the end of March 2020. As part of the settlement, parties agreed that depreciation of the Oregon‑allocated net book value of certain undepreciated equipment replaced as a result of the applicable repowering projects would be accelerated and offset with excess deferred income taxes resulting from 2017 Tax Reform. In 2020, accelerated depreciation of $40 million and offsetting amortization of excess deferred income taxes was recognized associated with the two remaining repowered facilities included in the 2019 RAC. In October 2020, PacifiCorp filed its annual update for plants placed into service in 2019 requesting an overall rate increase of $2 million, or 0.2%, effective November 1, 2020. The rate was in effect through December 31, 2020 when new rates from the general rate case reset the RAC rates to zero.

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In October 2019, the OPUC approved the all-party settlement in the 2020 TAM, effective January 1, 2020. In December 2020, the Cedar Springs II wind facility was placed in service. In compliance with the terms of the settlement adopted by the OPUC, in December 2020, PacifiCorp filed to include the net power costs and PTCs in rates which resulted in a rate decrease of approximately $1 million, or 0.1%, effective December 11, 2020. In December 2020, PacifiCorp also filed an application with the OPUC requesting authorization to defer the revenue requirement associated with the Cedar Springs II wind resource and associated transmission through December 31, 2020, for later inclusion in rates.

In November 2019, PacifiCorp filed a 2020 RAC application requesting an annual increase in rates of $1 million, or 0.1%, associated with repowering the Glenrock III wind facility effective April 1, 2020 and an annual increase in rates of $3 million, or 0.3%, associated with repowering the Dunlap wind facility effective October 15, 2020. As part of its application, PacifiCorp proposed to offset the Oregon-allocated net book value of the replaced wind equipment in this filing with PacifiCorp's OATT revenue related deferral from 2017 through 2019. An all-party settlement was filed in January 2020 supporting the filed request and was approved by the OPUC in March 2020. Based on a final cost update for the Glenrock III wind facility, and including the net power cost and PTC benefits, a 0.02% rate decrease became effective April 1, 2020. In September 2020, PacifiCorp filed for a rate change after the repowered Dunlap wind facility was placed in service. Based on the final cost update for the Dunlap wind facility, and including the net power cost and PTC benefits, an additional rate increase of $2 million, or 0.1%, became effective September 18, 2020. As a result of the settlement, accelerated depreciation of $34 million and offsetting amortization of the OATT deferral was recognized during 2020 associated with undepreciated equipment replaced as a result of the repowering of the Glenrock III and Dunlap wind facilities.

In November 2019, PacifiCorp requested authorization to establish an automatic adjustment clause and rate schedule for the costs and revenues related to the Oregon Corporate Activity Tax ("OCAT") that applies to tax years beginning on or after January 1, 2020. Concurrent with this filing, PacifiCorp also requested authorization to defer the OCAT expense. In January 2020, the OPUC authorized the automatic adjustment clause, rate schedule and application for deferral. PacifiCorp began recovering the estimated OCAT expense effective February 1, 2020. The recovery adjustment for 2020 is 0.41% and the rate is being applied as a percentage surcharge on customers' bills.

In February 2020, PacifiCorp filed a general rate case in Oregon requesting a net rate increase of $71 million, or 5.4%, effective January 1, 2021. The request included a separate tariff rider to recover costs associated with the early retirement of Cholla Unit 4 for an increase of $17 million annually from January 2021 through April 2025 and an annual credit to customers of $25 million for amortization of remaining deferred income tax benefits associated with 2017 Tax Reform over a three-year period beginning January 2021. The request for the increase in base rates reflected recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs and other closure costs associated with coal-fueled facilities and rate design modernization proposals. Net power costs are addressed separately in the Oregon TAM, discussed below. In June 2020, PacifiCorp filed reply testimony requesting a revised net rate increase of $67 million, or 5.0%, effective on January 1, 2021. The revised net rate increase reflected a proposal to offset the costs associated with the early retirement of Cholla Unit 4 with a portion of the deferred income tax benefits associated with 2017 Tax Reform rather than recovering these costs through a separate tariff as proposed in the initial filing. The revised net rate increase also included PacifiCorp's proposal to provide an annual credit to customers of $6 million for amortization of the remaining deferred income tax benefits associated with 2017 Tax Reform over a two-year period beginning January 2021. In August 2020, PacifiCorp filed its surrebuttal testimony requesting a revised net rate increase of $41 million, or 3.1%, effective January 1, 2021. This included a decrease in the requested return on equity, an update to depreciation rates consistent with the settled depreciation study and the proposed annual credit to customers of the remaining deferred income tax benefits associated with 2017 Tax Reform that was modified to $7 million. PacifiCorp also filed a partial stipulation that would settle all rate design and rate spread issues in the general rate case. In PacifiCorp's closing brief filed in October 2020, PacifiCorp modified the requested net rate increase to $40 million, or 3.0%, to accept the OPUC staff's adjustment correcting the ongoing advanced meter infrastructure operating costs reflected in the case. In December 2020, the OPUC approved a net rate decrease of approximately $24 million, or 1.8%, effective January 1, 2021, accepting PacifiCorp's proposed annual credit to customers of the remaining 2017 Tax Reform benefits over a two-year period. The new rates approved by the OPUC reflect a modified capital structure for ratemaking purposes and a lower return on equity than proposed by PacifiCorp. The new rates also exclude approximately $27 million in incremental decommissioning costs and other closure costs associated with coal-fueled generating facilities that will be addressed through a separate process in 2021. The order also authorizes an Annual Wildfire Mitigation and Vegetation Management Cost Recovery Mechanism for three years as described under "Adjustment Mechanisms" in Item 1 of this Form 10-K. PacifiCorp's compliance filing to reset base rates effective January 1, 2021 in response to the OPUC's order reflected a rate decrease of approximately $67 million, or 5.1%, due to the exclusion of the impacts of repowered wind facilities, new wind facilities and certain other new investments that had not been placed in service at the time of the filing. Additional compliance filings will be made to include these investments in rates concurrent when they are placed in service. In January 2021, the OPUC approved the second compliance filing to add the remainder of the Ekola Flats wind facility to rates, resulting in a rate increase of approximately $7 million, or 0.5%, effective January 12, 2021.
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In February 2020, PacifiCorp submitted its annual TAM filing in Oregon requesting a decrease of $49 million, or 3.7%, effective January 1, 2021, based on forecast net power costs and loads for the calendar year 2021. The filing includes the customer benefits of new and repowered wind resources, including an increase in PTCs. In June 2020, PacifiCorp filed reply testimony in its annual TAM with updated forecast net power costs resulting in a rate decrease of $47 million, or 3.6%, effective January 1, 2021. In August 2020, PacifiCorp filed a stipulation with the OPUC settling all issues in the proceeding. In October 2020, the OPUC approved the stipulation. In November 2020, the final cost update was filed resulting in an annual rate decrease of $41 million, or 3.1%, effective January 1, 2021.

Wyoming

In July 2019, Wyoming Senate Enrolled Act No. 74 ("SEA 74") went into effect. The legislation, among other things, requires electric utilities to make a good faith effort to sell a coal-fueled generation facility in Wyoming before it can receive recovery in rates for capital costs associated with new generation facilities built, in whole or in part, to replace the retiring coal-fueled generation facility. The electric utility is obligated to purchase the electricity from the facility through a power purchase agreement at a price that is no greater than the utility's avoided cost as determined by the WPSC. Costs associated with an approved power purchase agreement are expected to be recoverable in rates from Wyoming customers. In March 2020, the Wyoming governor signed Senate Enrolled Act No. 23, which allows a 1 MW or greater customer to purchase electricity from a coal-fueled generation facility purchased from an electric utility under SEA 74. The WPSC approved new administrative rules to implement the legislation in November 2020, which are expected to go into effect in early 2021. The overall impacts of the legislation and the new administrative rules cannot be determined at this time.

In March 2020, PacifiCorp filed a general rate case with the WPSC requesting an increase in base rates of $7 million, or 1.1%, effective January 1, 2021. The increase reflects recovery of Energy Vision 2020 investments, updated depreciation rates, incremental decommissioning costs associated with coal-fueled facilities and rate design modernization proposals. The application also requests a revision to the ECAM to eliminate the sharing band and requests authorization to discontinue operations and recover costs associated with the early retirement of Cholla Unit 4. The proposed increase reflects several rate mitigation measures that include use of the remaining 2017 Tax Reform benefits to buy down plant balances, including Cholla Unit 4, and spreading the recovery of the depreciation of certain coal-fueled generation units over time periods that extend beyond the depreciable lives proposed in the depreciation rate study. In September 2020, PacifiCorp filed its rebuttal testimony that modified its requested increase in base rates from $7 million to $9 million and reflected an update to the rate mitigation measures for using the 2017 Tax Reform benefits. The WPSC determined that the rebuttal testimony filed constituted a material and substantial change to the original application and vacated the hearing that was scheduled for October 2020. The WPSC re-noticed PacifiCorp's case and rescheduled the hearings. The hearings began February 2021 and will resume March 2021. PacifiCorp has requested a rate effective date of July 1, 2021.

In March 2020, the Wyoming governor signed House of Representatives Enrolled Act No. 79, which requires the WPSC to adopt a standard to specify a percentage of an electric utility's electricity to be generated from coal‑fueled generation utilizing carbon capture technology by no later than 2030. The bill allows electric utilities to implement a surcharge not to exceed 2% of customer bills to recover costs to comply with the standard. PacifiCorp is working with the WPSC and other stakeholders on rules to implement the legislation. The overall impacts of this legislation cannot be determined at this time.

In April 2020, PacifiCorp filed its annual ECAM and RRA application with the WPSC requesting recovery of $7 million, or 1.0% of deferred net power costs from customers for the period January 1, 2019 through December 31, 2019, reflecting the difference between base and actual net power costs in the 2019 deferral period. The rate change went into effect on an interim basis June 15, 2020. This increase will be offset in part by continued rate credits associated with 2017 Tax Reform benefits and bonus depreciation for which minor adjustments are proposed to go into effect in the same timeframe. The hearing was held and the WPSC issued a bench decision in December 2020, reducing the requested recovery by $1 million.

Washington

In November 2019, PacifiCorp submitted its 2019 decoupling filing with the WUTC for the twelve months ended June 30, 2019. In January 2020, the WUTC approved PacifiCorp's 2019 decoupling filing, which resulted in a $12 million surcredit to customers effective February 1, 2020.
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In December 2019, PacifiCorp submitted its 2021 Washington general rate case requesting an overall decrease to rates of $4 million, or 1.1%, effective January 1, 2021. The case includes a proposed ten-year annual surcredit of $7 million to customers primarily associated with the amortization of excess deferred income taxes from 2017 Tax Reform. The case also includes a request for approval of a new cost allocation methodology, updated depreciation rates, incremental decommissioning costs and other closure costs associated with certain coal-fueled facilities, recovery of Energy Vision 2020 investments, and rate design modernization proposals. In April 2020, PacifiCorp submitted supplemental testimony and exhibits to incorporate the impacts of the recently completed decommissioning studies for PacifiCorp's coal-fueled generating resources and updated net power costs. The updates resulted in a revised request for an overall increase to rates of $11 million, or 3.2%. The parties subsequently reached a settlement in principle. In July 2020, the resulting all-party settlement was filed reflecting a rate decrease of $4 million or 1.2%. The settlement adjusts the current $8 million annual surcredit associated with 2017 Tax Reform that was set to expire January 1, 2021 to a five-year annual surcredit of $12 million, primarily associated with the amortization of excess deferred income taxes from 2017 Tax Reform. The settlement also includes approval of the new cost allocation methodology, updated depreciation rates, incremental decommissioning costs and other closure costs associated with certain coal-fueled facilities and rate design modernization proposals. While recovery of the Energy Vision 2020 investments is reflected in the settlement, revenue associated with those investments placed into service after May 1, 2020 will be subject to a prudency review in a separate filing in 2021 to address the cost recovery. In October 2020, PacifiCorp filed a petition for rehearing and motion to amend the settlement stipulation to reflect an increase to net power costs. In the settlement, parties had agreed to offset any increase to net power costs in the October update with the power cost adjustment mechanism deferral account balance. The October update resulted in an increase greater than the balance in the deferral account. To maintain the intent of the settlement to update net power costs and decrease rates for customers, PacifiCorp and the parties to the settlement reached an agreement to reflect this difference in the deferral account for future ratemaking. In November 2020, PacifiCorp and parties filed joint testimony supporting the amended settlement. The settlement was approved by the WUTC in December 2020.

In December 2020, PacifiCorp submitted its 2020 decoupling filing with the WUTC for the twelve months ended June 30, 2020. In January 2021, the WUTC approved PacifiCorp's 2020 decoupling filing, which resulted in a $3 million surcharge to customers over two years effective February 1, 2021.

Idaho

In April 2020, PacifiCorp filed its annual ECAM application with the IPUC requesting recovery of $21 million, or 3.0%, for deferred costs in 2019. This filing includes recovery of the difference in actual net power costs to the base level in rates, an adder for recovery of the Lake Side 2 resource, changes in PTCs, RECs, and a resource tracking mechanism to match costs with the benefits of wind repowering projects until they are reflected in base rates. This deferral is partially offset by $3 million related to amortization of excess deferred income taxes stemming from 2017 Tax Reform and net of recovery for a regulatory asset related to the prior depreciation study. In May 2020, the IPUC issued an order approving the application as filed with rates effective June 1, 2020.

In March 2020, PacifiCorp filed a notice of intent to file a general rate case with the IPUC. However, in June 2020, PacifiCorp negotiated a settlement with parties that allowed PacifiCorp to avoid filing a general rate case in 2020. The parties will support PacifiCorp's proposal to defer the incremental depreciation expense from the 2018 depreciation study during 2021, request deferred accounting treatment for unrecovered investment and closure costs when Cholla Unit 4 is retired, use a portion of the deferred income tax benefits associated with 2017 Tax Reform to accelerate the depreciation of Cholla Unit 4 and offset future rate increases, and include the Pryor Mountain wind facility and the repowering of the Foote Creek I wind facility in the resource tracking mechanism. In return, PacifiCorp will delay filing a general rate case until 2021 with rates effective January 1, 2022. In July 2020, PacifiCorp filed a settlement stipulation allowing the delay of the general rate case and the related application for an accounting order. In December 2020, the IPUC issued an order approving the application and associated stipulation as filed.

California

In April 2018, PacifiCorp filed a general rate case with the CPUC for an overall rate increase of $1 million, or 0.9%, effective January 1, 2019. A CPUC decision was issued in February 2020, resulting in a $6 million, or 5.1%, rate decrease effective February 6, 2020. The CPUC's final order also resulted in an additional rate decrease of $6 million, or 5.1%, over the next three years due to the amortization of excess deferred income taxes attributed to 2017 Tax Reform.

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California Senate Bill 901 requires electric utilities to prepare and submit wildfire mitigation plans that describe the utilities' plans to prevent, combat and respond to wildfires affecting their service territories. In January 2020, the CPUC approved the resolution establishing procedural rules for the review and disposition of 2020 Wildfire Mitigation Plans. PacifiCorp submitted its 2020 Wildfire Mitigation Plan in February 2020 for which it received approval in June 2020.

In December 2019, PacifiCorp filed an application notifying the CPUC of the early retirement of the Cholla Unit 4 generating facility and requesting authorization to establish a memorandum account associated with the retirement and decommissioning of Cholla Unit 4. The memorandum account would be used to track costs associated with the unrecovered plant balance, decommissioning and other closure-related costs until PacifiCorp requests recovery in its next general rate case or other proceeding. In July 2020, the CPUC issued a decision approving the requested memorandum account with an effective date of December 27, 2019.

In August 2020, PacifiCorp filed an application with the CPUC to address California energy costs and GHG Allowance costs. The application includes a $7 million, or 6.7% decrease in energy costs, which is largely attributed to PTCs for new and repowered Energy Vision 2020 resources, and an increase of $1 million, or 0.8%, to recover costs for purchasing GHG allowances as required by the state's Cap-and-Trade Program. If this application is approved, this would result in an overall decrease of $6 million, or 5.9% effective January 1, 2021.

MidAmerican Energy

COVID-19

In May 2020, the IUB issued an order authorizing MidAmerican Energy to use a regulatory asset account to record and track increased costs and other financial impacts associated with COVID-19. As of December 31, 2020, MidAmerican Energy has $2 million in a regulatory asset for certain uncollectible customer accounts. At such time as MidAmerican Energy deems appropriate, it may initiate a proceeding with the IUB to seek recovery of such costs and other financial impacts. MidAmerican Energy cannot predict at this time the amount of such financial impacts from COVID-19 or when it will seek recovery of such costs with the IUB.

Iowa Transmission Legislation

In June 2020, Iowa enacted legislation that grants incumbent electric transmission owners the right to construct, own and maintain electric transmission lines that have been approved for construction in a federally registered planning authority's transmission plan and that connect to the incumbent electric transmission owner's facility. Also known as the Right of First Refusal, the law ensures MidAmerican Energy, as an incumbent electric transmission owner, has the legal right to construct, own and maintain transmission lines that have been approved by the MISO (or another federally registered planning authority) in MidAmerican Energy's service territory. To exercise the legal right, MidAmerican Energy must notify the IUB within 90 days of any such approval for construction that it intends to construct, own and maintain the electric transmission line. The law still requires an incumbent electric transmission owner to obtain a state franchise from the IUB to construct, erect, maintain or operate an electric transmission line and, upon issuance of a franchise, the incumbent electric transmission owner provide the IUB an estimate of the cost to construct the electric transmission line and, until the construction is complete, a quarterly report updating the estimated cost to construct the electric transmission line. Legal challenges have been brought against similar laws in other states, but courts that have ruled on such cases have upheld the states' laws. In October 2020, a lawsuit challenging the law was filed in Iowa by national transmission interests. The suit raises issues specific to Iowa law, and the State of Iowa is defending the law in the suit.

Renewable Subscription Program

In December 2020, MidAmerican Energy filed with the IUB a proposed Renewable Subscription Program tariff. If approved, the program will provide qualified industrial customers with the opportunity to meet their future energy growth above baseline levels with renewable energy from specific MidAmerican Energy wind-powered generation additions and 100 MWs of planned solar generation for 20 years at fixed prices based on the cost of such facilities. Under the program, MidAmerican Energy would own the facilities, retain PTCs and other tax benefits associated with the facilities and include all revenues and costs from the program in its Iowa-jurisdictional results of operation, but renewable attributes from the project would be specifically assigned to subscribing customers. Approval by the IUB is pending.
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    NV Energy (Nevada Power and Sierra Pacific)

Regulatory Rate Reviews

In June 2019, Sierra Pacific filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue increase of $5 million but requested an annual revenue reduction of $5 million. In September 2019, Sierra Pacific filed an all-party settlement for the electric regulatory rate review. The settlement resolves all cost of capital and revenue requirement issues and provides for an annual revenue reduction of $5 million and requires Sierra Pacific to share 50% of regulatory earnings above 9.7% with its customers. The rate design portion of the regulatory rate review was not a part of the settlement and a hearing on rate design was held in November 2019. In December 2019, the PUCN issued an order approving the stipulation but made some adjustments to the methodology for the weather normalization component of historical sales in rates, which resulted in an additional annual revenue reduction of $3 million. The new rates were effective January 1, 2020. In January 2020, Sierra Pacific filed a petition for rehearing challenging the PUCN's adjustments to the weather normalization methodology. In February 2020, the PUCN issued an order granting the petition for rehearing. In April 2020, the PUCN issued a final order approving a weather normalization methodology that changed the additional annual revenue reduction from $3 million to $2 million with an effective date of January 1, 2020. Customers billed under rates using the initial revenue reduction were issued credits in the fourth quarter of 2020.

In June 2020, Nevada Power filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue reduction of $96 million but requested an annual revenue reduction of $120 million. In September 2020, Nevada Power filed an all-party settlement for the electric regulatory rate review. The settlement resolved all but one issue and provided for an annual revenue reduction of $93 million and required Nevada Power to issue a $120 million one-time bill credit, composed primarily of existing regulatory liabilities, to customers beginning in October 2020. The continuation of the earning sharing mechanism was the one issue that was not addressed in the settlement. In October 2020, the PUCN held a hearing on the continuation of the earning sharing mechanism and issued an interim order accepting the settlement and requiring the one-time bill credit be issued to customers. The $120 million one-time bill credit was issued to customers in the fourth quarter of 2020. In December 2020, the PUCN issued a final order directing Nevada Power to continue the earning sharing mechanism subject to any modifications made to the earning sharing mechanism pursuant to an alternative rate-making ruling and to use the weather normalization methodology adopted for Sierra Pacific in its 2019 regulatory rate review. The new rates were effective on January 1, 2021.

In June 2020, Sierra Pacific filed a petition with the PUCN, which was later changed to an application, to adjudicate and establish the cost recovery mechanism for the One Nevada Transmission Line ("ON Line") addressing the reallocated portion of the ON Line revenue requirement. This filing was made concurrent with the Nevada Power regulatory rate review application, which addresses the ON Line reallocated revenue requirement related to Nevada Power. In December 2020, the PUCN issued a final order deferring the ON Line reallocated revenue and regulatory amortization until Sierra Pacific's next regulatory rate review.
        2017 Tax Reform

In February 2018, the Nevada Utilities made filings with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by the Nevada Utilities. The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing the Nevada Utilities to record the amortization of any excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 1, 2018. Subsequently, the Nevada Utilities filed a petition for reconsideration relating to the amortization of protected excess accumulated deferred income tax balances resulting from the 2017 Tax Reform. In November 2018, the PUCN issued an order granting reconsideration and reaffirming the September 2018 order. In December 2018, the Nevada Utilities filed a petition for judicial review with the district court. The district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, the Nevada Utilities filed a notice of appeal to the Nevada Supreme Court of the district court's order. The Nevada Utilities have agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review settlement. In December 2020, the PUCN issued a final order accepting the settlement. In January 2021, the Nevada Utilities filed their withdrawal and the matter was dismissed by the court.


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Price Stability Tariff

In November 2018, the Nevada Utilities made filings with the PUCN to implement the Customer Price Stability Tariff ("CPST"). The Nevada Utilities have designed the CPST to provide certain customers, namely those eligible to file an application pursuant to Chapter 704B of the Nevada Revised Statutes, with a market-based pricing option for renewable resources. The CPST provides for an energy rate that would replace the BTER and deferred energy accounting adjustment. The goal is to have an energy rate that yields an all-in effective rate that is competitive with market options available to such customers. In February 2019, the PUCN granted several intervenors the ability to participate in the proceeding. In June 2019, the Nevada Utilities withdrew their filings. In May 2020, the Nevada Utilities refiled the CPST incorporating the considerations raised by the PUCN and other intervenors and a hearing was held in September 2020. In November 2020, the PUCN issued an order approving the tariff with modified pricing and directing the Nevada Utilities to develop a methodology by which all eligible participants may have the opportunity to participate in the CPST program up to a limit with the same proportion of governmental entities' and non-governmental entities' MWh reserved for potentially interested customers as filed. In December 2020, the Nevada Utilities filed a petition for reconsideration of the pricing ordered by the PUCN.

Natural Disaster Protection Plan

The Nevada Utilities submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, intervening parties filed petitions for reconsideration. The Bureau of Consumer Protection filed a petition for judicial review with the district court in November 2020.In December 2020, the PUCN issued a second modified final order approving the natural disaster protection plan, as modified, and reopened its investigation and rulemaking on SB 329 to address rate design issues raised by intervenors. The comment period for the reopened investigation and rulemaking ended in early February 2021 and the matter is ongoing.
COVID-19

In March 2020, the PUCN issued an emergency order for the Nevada Utilities to establish regulatory asset accounts related to the costs of maintaining service to customers affected by COVID-19 whose services would have been terminated or disconnected under normally-applicable terms of service. The Nevada Utilities may incur significant costs as a result of COVID-19, including, but not limited to, higher credit loss expenses resulting from a higher than average level of write-offs of uncollectible accounts associated with the suspension of disconnections and late payment fees to assist customers facing unprecedented economic pressures. The Nevada Utilities also expect to incur additional costs that cannot currently be predicted given the unprecedented nature of COVID-19.

Northern Powergrid Distribution Companies

GEMA, through the Ofgem, published its final determinations for the next set of price controls for transmission and gas distribution networks in Great Britain in December 2020. These determinations do not apply to Northern Powergrid but aspects of the proposals are capable of application to Northern Powergrid's next price control, ("ED2"), which will begin in April 2023.

Regarding allowed return on capital, Ofgem determined a cost of equity of 4.55% (plus inflation calculated using the United Kingdom's consumer prices index including owner occupiers' housing costs, CPIH). When placed on a comparable footing, by adjusting for differences in the assumed equity ratio and the measure of inflation used, the determination for transmission and gas distribution is approximately 200 basis points lower than the current cost of equity for electricity distribution.

In December 2020, in respect of electricity distribution, GEMA published its decision on the methodology it will use to set the ED2 price control and prices from April 2023 to March 2028. This confirmed that Ofgem will apply many aspects of the proposals from the transmission and gas distribution price controls to electricity distribution. It did not cover financial aspects, including the allowed return on capital, which will be covered by a separate decision in Q1 2021, with confirmation not expected until final determinations in late 2022.


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BHE Pipeline Group

BHE GT&S

During 2018, BHE GT&S filed informational filings on FERC Form No. 501-G for EGTS and Carolina Gas. FERC terminated those proceedings without additional action. Also in 2018, BHE GT&S requested a waiver from filing the FERC Form No. 501-G filing requirement for Cove Point. The waiver request was granted.

In January 2020, pursuant to the terms of a previous settlement, Cove Point filed a general rate case for its FERC-jurisdictional services, with proposed rates to be effective March 1, 2020. Cove Point proposed an annual cost-of-service of approximately $182 million. In February 2020, the FERC approved suspending the changes in rates for five months following the proposed effective date, until August 1, 2020, subject to refund. In November 2020, Cove Point reached an agreement in principle with the active participants in the general rate case proceeding. Under the terms of the agreement in principle, Cove Point's rates effective August 1, 2020 result in an increase to annual revenues of approximately $4 million and a decrease in annual depreciation expense of approximately $1 million, compared to the rates in effect prior to August 1, 2020. The interim settlement rates were implemented November 1, 2020, and Cove Point's provision for rate refunds for August 2020 through October 2020 totaled $7 million. The agreement in principle was reflected in a stipulation and agreement filed with the FERC in January 2021, which is subject to final approval by the FERC.

        Northern Natural Gas

In October 2018, Northern Natural Gas filed an informational filing on FERC Form No. 501-G and a Statement Demonstrating Why No Rate Adjustment is Necessary. In January 2019, FERC initiated a Section 5 investigation to determine whether the rates currently charged by Northern Natural Gas are just and reasonable. As required by the FERC Section 5 order, Northern Natural Gas filed a cost and revenue study in April 2019. In July 2019, Northern Natural Gas filed a Section 4 rate case requesting increases in its transportation and storage rates. In January 2020, the FERC approved Northern Natural Gas' filing to implement its interim rates subject to refund, effective January 1, 2020. In June 2020, a settlement agreement was filed with the FERC, resolving the Section 5 investigation and Section 4 rate case and providing for increased service rates and depreciation rates. Market Area transportation reservation rates increased 28.5% and storage reservation rates increased 67.0% from the rates that were in effect in 2019. Depreciation rates are 2.3% for onshore transmission plant, 2.95% for LNG storage plant, 13.0% for intangible plant, and 2.75% for general plant. The settlement also provides for a Section 4 and Section 5 rate action moratorium through June 30, 2022, subject to certain exceptions, as well as provides for minimum annual maintenance capital spending. The settlement rates were implemented May 1, 2020, and the Company's provision for rate refunds for January 2020 through April 2020 totaled $69 million. The FERC approved the settlement in September 2020, and rate refunds to customers were processed in early October 2020.
        Kern River

In October 2018, Kern River filed an informational filing on FERC Form No. 501-G and a Statement Explaining Why No Rate Adjustment is Necessary, along with a Tax Reform Credit Rate Settlement in a companion docket. Kern River's Tax Reform Credit Rate Settlement offered an 11% rate credit against the Maximum Base Tariff Rates for firm service and any one-part rate that includes fixed costs which would result in an expected annual rate credit of $13 million. In November 2018, FERC approved Kern River's Tax Reform Credit effective November 15, 2018.
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    BHE Transmission

AltaLink

Rate Relief Application

In January 2021, driven by the pandemic and economic shutdown that has negatively impacted all Albertans, AltaLink filed an application with the AUC that requested approval of tariff relief measures totaling C$350 million over the three-year period, 2021 to 2023. The tariff relief measures consist of a proposed refund to customers of C$150 million of previously collected future income taxes and C$200 million of surplus accumulated depreciation. The future income tax refund will be evenly distributed over the two-year period, 2021 to 2022, with C$75 million included in each year. The accumulated depreciation surplus will be refunded over the three-year period, 2021 to 2023, with C$60 million included in 2021 and 2022, and C$80 million in 2023. If approved by the AUC, these tariff relief measures will save customers an estimated C$317 million over the three-year period, 2021 to 2023.

General Tariff Application

In August 2018, AltaLink filed its 2019-2021 GTA with the AUC, delivering on the first three years of its commitment to keep rates lower or flat at the approved 2018 revenue requirement of C$904 million for customers for the next five years. In addition, AltaLink proposed to provide a further tariff reduction over the three year period by refunding previously collected accumulated depreciation surplus of an additional C$31 million. In April 2019, AltaLink filed an update to its 2019-2021 GTA primarily to reflect its 2018 actual results and the impact of the AUC's decision on AltaLink's 2014-2015 Deferral Accounts Reconciliation Application. The application requested the approval of revised revenue requirements of C$879 million, C$882 million and C$885 million for 2019, 2020 and 2021, respectively.

In July 2019, AltaLink filed a 2019-2021 partial negotiated settlement application with the AUC. The application consisted of negotiated reductions that resulted in a net decrease of C$38 million to the three year total revenue requirement applied for in AltaLink's 2019-2021 GTA updated in April 2019. However, this was offset by AltaLink's request for an additional C$20 million of forecast transmission line clearance capital as part of an excluded matter. The 2019-2021 negotiated settlement agreement excluded certain matters related to the new salvage study and salvage recovery approach, additional capital spending and incremental asset retirements. AltaLink's salvage proposal is estimated to save customers C$267 million between 2019 and 2023. Excluded matters were examined by the AUC in a hearing held in November 2019, with written arguments filed in January 2020.

In October 2019, AltaLink filed a letter with the AUC to request the continuation of the monthly interim refundable transmission tariff effective January 1, 2020, until a final tariff is approved. In October 2019, the AUC confirmed the interim refundable transmission tariff at C$74 million per month, until otherwise directed by the AUC.

In April 2020, the AUC issued its decision with respect to AltaLink's 2019-2021 GTA. The AUC approved the negotiated settlement agreement as filed and rendered its decision and directions on the excluded matters. The AUC declined to approve AltaLink's proposed salvage methodology at that time, but indicated it would initiate a generic proceeding to review the matter on an industry-wide basis. The AUC approved, on a placeholder basis, C$13 million of the additional C$20 million AltaLink requested for forecast transmission line clearance capital. The remaining C$7 million of capital investment was reviewed in AltaLink's subsequent compliance filing. Also, C$3 million of forecast operating expenses and C$4 million of forecast capital expenditures related to fire risk mitigation were approved, with an additional C$31 million of capital expenditures reviewed in the compliance filing. Finally, the AUC approved C$6 million of retirements for towers and fixtures.

In July 2020, the AUC approved AltaLink's compliance filing establishing revised revenue requirements of C$895 million for 2019, C$894 million for 2020 and C$898 million for 2021, exclusive of the assets transferred to the PiikaniLink Limited Partnership and the KainaiLink Limited Partnership. The AUC also approved a revised monthly tariff of C$71 million for September 2020 to December 2020 and a monthly tariff of C$74 million for 2021. The 2021 revenue requirement is based on 8.5% return on equity and 37% deemed equity set by the AUC as placeholders.


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The AUC deferred its decision on AltaLink's proposed salvage methodology included in AltaLink's 2019-2021 GTA, pending a generic proceeding to consider the broader implications. This generic proceeding was closed and in July 2020, AltaLink filed an application with the AUC for the review and variance of the AUC's decision with respect to AltaLink's proposed salvage methodology. In September 2020, the AUC granted this review on the basis that there were changed circumstances that could lead the AUC to materially vary or rescind the majority hearing panel's findings on AltaLink's proposed salvage methodology. In October 2020, AltaLink filed responses to information requests from the AUC, written argument was filed by intervening parties and written reply argument was filed by AltaLink. In November 2020, the AUC issued its decision on AltaLink's review and variance application. The AUC decided to vary the original decision and approve AltaLink's proposed net salvage method and the revised transmission tariffs as filed, effective December 2020. The new salvage methodology will decrease the amount of salvage pre-collection resulting in reductions to AltaLink's revenue requirement from customers by C$24 million, C$27 million and C$31 million for the years 2019, 2020 and 2021, respectively. AltaLink delivered on the first three years of its commitment to customers to keep rates flat for five years by obtaining the necessary AUC approvals. AltaLink's approved 2019-2021 GTA maintains customer rates below the 2018 level of C$904 million from 2019 to 2021.

2022 Generic Cost of Capital Proceeding

In December 2020, the AUC initiated the 2022 generic cost of capital proceeding. This proceeding will consider the return on equity and deemed equity ratios for 2022 and one or more additional test years. Due to the existing uncertainty as a result of the ongoing COVID-19 pandemic, before establishing a process schedule, the commission has requested participants to submit comments that address the following: (i) the continuation of the currently approved return on equity and deemed equity ratios for a further period of time; (ii) the appropriate test period for the proceeding; (iii) the scope of the proceeding, including whether a formula-based approach to return on equity should be utilized; (iv) the considerations to take into account when establishing the process for the proceeding; and (v) the avoidance of duplicative evidence and greater coordination and collaboration between parties.

In January 2021, AltaLink submitted a letter to the AUC stating that due to ongoing capital market volatility and other COVID-19 related uncertainties there are reasonable grounds for extending the currently approved 2021 return on equity and deemed equity ratio on a final basis for 2022. AltaLink further stated there is insufficient time to complete a full generic cost of capital proceeding in 2021, in order to issue a decision prior to the beginning of 2022 and a formula-based approach should not be considered at this time. AltaLink suggested that a proceeding could be restarted in the third quarter of 2021, for 2023 and subsequent years.

2021 Generic Cost of Capital Proceeding

In December 2018, the AUC initiated the 2021 GCOC proceeding to consider returning to a formula-based approach in determining the return on equity for a given year, starting with 2021. In April 2019, after receiving comments from interested parties, the AUC expanded the scope of the proceeding to include a traditional non-formulaic GCOC inquiry as well as the consideration of returning to a formula-based approach.

In January 2020, AltaLink filed company and expert evidence, recommending a range of 8.75% to 10.5% return on equity, on a recommended equity ratio of 40% for 2021 and 2022. The Consumers' Coalition of Alberta, the Utilities Consumer Advocate and the City of Calgary filed intervenor evidence recommending a range of 5.0% to 6.9% return on equity and an AltaLink common equity ratio of 35% to 37% for 2021 and 2022.

In March 2020, as a result of COVID-19, the AUC suspended the proceeding for an indefinite period. This decision was subject to review and reassessment by the AUC every 30 to 60 days. In May 2020, the AUC proposed a method to determine fair cost of capital parameters for 2021 given the circumstances presented by the COVID-19 pandemic. The AUC outlined four options for utilities and interested parties to consider and subsequently added a fifth option that set the 2021 return on equity at 8.3% as a balance between certainty and economic conditions.

In July 2020, AltaLink requested that the AUC continue to hold the proceeding in abeyance and revisit the issue in another 30 to 60 days. AltaLink also requested that if the AUC determined the proceeding should resume, the AUC should set a date for the filing of evidence by all parties in the first quarter of 2021 and that the proceeding should address return on equity for 2021 and 2022 only.

In August 2020, the AUC issued a letter indicating that it had decided not to resume the GCOC proceeding at that time and would continue to assess when, and under what conditions, the proceeding could resume.

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In October 2020, the AUC issued its decision and set the final approved return on equity and deemed equity ratio for AltaLink by extending the current approved 8.5% and 37%, respectively, for the duration of 2021.

2014-2015 Deferral Accounts Reconciliation Application

In December 2018 and January 2019, the AUC issued decisions approving C$3,833 million out of the C$4,017 million capital project additions included in the application. Project costs of C$155 million were deferred to a future hearing. The AUC disallowed capital additions of approximately C$29 million including applicable AFUDC, pending receipt of additional supporting documentation for certain items.

AltaLink filed compliance filings in February and September 2019 reflecting the AUC's directives, and AUC approval was received in November 2019. However, the AUC had previously ruled that it would put in placeholder amounts for the approved costs of the assets in the 2014-2015 Deferral Accounts Reconciliation Application proceeding until the AUC-initiated proceeding to consider the issue of transmission asset utilization.

In January 2021, the AUC approved the placeholder amounts as final, noting that the transmission asset utilization proceeding was not initiated and the AUC has no immediate plans to do so.

2016-2018 Deferral Accounts Reconciliation Application

In July 2019, AltaLink filed its 2016-2018 Deferral Accounts Reconciliation Application with the AUC. The application included 116 projects with total gross capital additions, including AFUDC, of C$976 million. In December 2019, the AUC announced a series of technical meetings to address AltaLink's responses to certain information requests.

In March 2020, the AUC issued a letter indicating that it would provide further process steps after AltaLink submitted its remaining responses to information requests and the Consumers' Coalition of Alberta filed its intervener evidence. In May 2020, AltaLink provided additional responses to information requests as directed by the AUC. In accordance with the AUC's revised process schedule, the Consumers' Coalition of Alberta filed its intervener evidence in June 2020, and AltaLink subsequently filed information requests on the intervener evidence in June 2020 and filed its rebuttal evidence in July 2020.

In August 2020, the AUC determined that a hearing was not required and issued a proceeding schedule to provide for argument, reply argument and the close of record by September 2020. In September 2020, AltaLink and interveners filed written argument and reply argument.

In December 2020, the AUC issued its decision approving C$941 million out of the C$947 million capital project additions included in the application. The AUC disallowed capital additions of approximately C$6 million. As part of this proceeding, the AUC also approved the following: AltaLink's deferral accounts for taxes other than income taxes, long-term debt, and annual structure payments; placeholder treatment for project trailing costs associated with two ongoing disputes; and canceled project costs incurred in 2017 and 2018. AltaLink filed compliance filings in January 2021 reflecting the AUC's directives.

2019 Deferral Accounts Reconciliation Application

In October 2020, AltaLink filed its application with the AUC, which includes ten projects with total gross capital additions of C$129 million, including applicable AFUDC. In December 2020, AltaLink provided responses to AUC information requests, interveners filed written arguments and AltaLink filed reply arguments.


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Alberta Electric System Operator Tariff Decision

In September 2019, the AUC issued its decision with respect to the 2018 AESO tariff. As part of this decision, the AUC approved AltaLink's proposal to refund contributions made by distribution facility owners relative to transmission projects built and owned by transmission facility owners. The proposal would benefit distribution customers by flowing through the lower cost of capital of the transmission facility owner rather than the higher cost of capital of the distribution facility owner. As directed by the AUC, AltaLink would pay FortisAlberta the unamortized contribution balance of approximately C$375 million as of December 2017 and add the amount to AltaLink's rate base if the decision was upheld. The AUC directed the AESO to consult with AltaLink to provide a joint proposal to implement AltaLink's contribution proposal effective in January 2018. In September 2019, FortisAlberta filed a review and variance application with the AUC requesting the AUC re-evaluate its findings with respect to AltaLink's customer contribution proposal relative to distribution facility owners. In October 2019, the AUC granted FortisAlberta's request to proceed to a review and variance with the record closed in November 2019 after submissions from FortisAlberta, AltaLink, and other interested parties. FortisAlberta also filed for permission to appeal the decision with the Court of Appeal, which would not be heard until after the AUC's review proceeding.

In December 2019, the AUC reopened the record of the review and variance proceeding and, in January 2020, issued specific information requests to FortisAlberta and AltaLink to clarify the evidence previously filed. AltaLink and FortisAlberta filed responses to the AUC information requests in January 2020. In February 2020, FortisAlberta filed a motion with the AUC requesting the appointment of a review panel to convene an oral hearing.

In March 2020, as a result of COVID-19, the AUC advised that it would be immediately deferring all public hearings, consultations or information sessions until further notice and requested FortisAlberta to advise the AUC whether it wished to amend its motion. In April 2020, FortisAlberta filed its response requesting an oral hearing, to commence in 105 days.

In May 2020, the AUC denied FortisAlberta's request for an oral hearing but requested expert tax evidence on three areas of disagreement between AltaLink and FortisAlberta. AltaLink and FortisAlberta filed expert evidence in July 2020. The AUC set a further process of information requests and responses and written submissions, which were scheduled to be completed in September 2020.

In September 2020, AltaLink and FortisAlberta filed a written argument and a reply argument. In November 2020, the AUC issued its decision with respect to FortisAlberta's review and variance proceeding. In its decision, the AUC rescinded its earlier findings from the original September 2019 decision which (i) directed FortisAlberta to transfer the unamortized contribution balance of approximately C$375 million to AltaLink and (ii) ruled the new contribution policy proposed by AltaLink be applied. The AUC's decision was based on two main areas: (i) if the original decision was confirmed, FortisAlberta would incur incremental income tax, carrying costs and debt restructuring costs of at least C$117 million that would be required to be recovered from ratepayers and (ii) the AUC determined that a majority of the approximately C$40 million in savings to ratepayers, which the hearing panel relied on as the basis for their original decision, could be achieved by directing FortisAlberta to adjust the applicable amortization rate for its AESO contributions to match the service lives of the transmission assets.

In November 2020, the AUC initiated a separate proceeding to (i) examine the legal basis of the current AESO customer contribution policy as it pertains to all transmission facility owners and distribution facility owners, (ii) consider whether there is a need for a new policy, including consideration of AltaLink's proposed policy and (iii) if approved, set the date on which any new policy would commence.

In December 2020, AltaLink filed its submissions in this proceeding, stating that the current customer contribution policy is contrary to business principles as it allows a distribution facility owner to earn a return on assets that are owned, operated and maintained by a transmission facility owner who has all the risk of ownership and is also contrary to the legislative scheme in Alberta, which delineates the ownership of transmission and distribution assets. AltaLink also stated it disagrees with the AUC's decision and it intends to file an appeal.

In December 2020, AltaLink filed its application for permission to appeal the AUC's review and variance decision with the Court of Appeal. The permission to appeal application is scheduled to be heard in May 2021.
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BHE U.S. Transmission

A significant portion of ETT's revenues are based on interim rate changes that can be filed twice annually and are subject to review and possible true-up in the next filed base regulatory rate review scheduled for no later than February 1, 2023. In January 2021, the Public Utilities Commission of Texas ("PUCT") approved ETT's request to suspend a base regulatory rate review filing scheduled for February 2021. Results of a base regulatory rate review would be prospective except for any deemed disallowance by the PUCT of the transmission investment since the initial base regulatory rate review in 2007. In June 2018, the PUCT approved ETT's application to reduce its transmission revenue by $28 million to reflect the lower federal income tax rate due to 2017 Tax Reform with the amortization of excess accumulated deferred federal income taxes expected to be addressed in the next base rate case.

ENVIRONMENTAL LAWS AND REGULATIONS

Each Registrant is subject to federal, state, local and foreign laws and regulations regarding climate change, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact each Registrant's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. Each Registrant believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. The Company has cumulative investments in wind, solar, geothermal and biomass generating facilities of approximately $34 billion and plans to spend an additional $3 billion on the construction of wind-powered generating facilities, repowering certain existing wind-powered generating facilities and funding of wind tax equity investments through 2021. Refer to "Liquidity and Capital Resources" of each respective Registrant in Item 7 of this Form 10-K for discussion of each Registrant's renewable generation-related capital expenditures.

Climate Change

In December 2015, an international agreement was negotiated by 195 nations to create a universal framework for coordinated action on climate change in what is referred to as the Paris Agreement. The Paris Agreement reaffirms the goal of limiting global temperature increase well below 2 degrees Celsius, while urging efforts to limit the increase to 1.5 degrees Celsius; establishes commitments by all parties to make nationally determined contributions and pursue domestic measures aimed at achieving the commitments; commits all countries to submit emissions inventories and report regularly on their emissions and progress made in implementing and achieving their nationally determined commitments; and commits all countries to submit new commitments every five years, with the expectation that the commitments will get more aggressive. In the context of the Paris Agreement, the United States agreed to reduce GHG emissions 26% to 28% by 2025 from 2005 levels. After more than 55 countries representing more than 55% of global GHG emissions submitted their ratification documents, the Paris Agreement became effective November 4, 2016. On June 1, 2017, President Trump announced the United States would begin the process of withdrawing from the Paris Agreement. The United States completed its withdrawal from the Paris Agreement on November 4, 2020. President Biden accepted the terms of the climate agreement January 20, 2021, and the United States completed its reentry February 19, 2021.

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GHG Performance Standards

Under the Clean Air Act, the EPA may establish emissions standards that reflect the degree of emissions reductions achievable through the best technology that has been demonstrated, taking into consideration the cost of achieving those reductions and any non-air quality health and environmental impact and energy requirements. On August 3, 2015, the EPA issued final new source performance standards, establishing a standard of 1,000 pounds of carbon dioxide per MWh for large natural gas-fueled generating facilities and 1,400 pounds of carbon dioxide per MWh for new coal-fueled generating facilities with the "Best System of Emission Reduction" reflecting highly efficient supercritical pulverized coal facilities with partial carbon capture and sequestration or integrated gasification combined-cycle units that are co-fired with natural gas or pre-combustion slipstream capture of carbon dioxide. The new source performance standards were appealed to the D.C. Circuit and oral argument was scheduled for April 17, 2017. However, oral argument was deferred and the court held the case in abeyance for an indefinite period of time. On December 6, 2018, the EPA announced revisions to new source performance standards for new and reconstructed coal-fueled units. EPA proposes to revise carbon dioxide emission limits for new coal-fueled facilities to 1,900 pounds per MWh for small units and 2,000 pounds per MWh for large units. The EPA would define the best system of emission reduction for new and modified units as the most efficient demonstrated steam cycle, combined with best operating practices. On January 12, 2021, EPA finalized a rule focused solely on a significant contribution finding for purposes of regulating source categories' GHG emissions. The final rule sets no specific regulatory standards and contains no regulatory text, nor does it address what constitutes the best system of emission reduction for new, modified and reconstructed electric generating units. EPA confirms in the "significant contribution" rule that electric generating units remain a listed source category under Clean Air Act Section 111(b), reaching that conclusion through the introduction of an emissions threshold framework by which a source category is deemed to contribute significantly to dangerous air pollution due to their GHG emissions if the amount of those emissions exceeds 3% of total GHG emissions in the United States. Under this methodology, no other source category would qualify for regulation. The significant contribution rule will take effect 60 days after publication in the Federal Register but is expected to be quickly revisited by the Biden administration. Because the significant contribution rule did not alter the emission limits or technology requirements of the 2015 rule, any new fossil-fueled generating facilities will be required to meet the GHG new source performance standards.
Affordable Clean Energy Rule

In June 2014, the EPA released proposed regulations to address GHG emissions from existing fossil-fueled generating facilities, referred to as the Clean Power Plan, under Section 111(d) of the Clean Air Act. The EPA's proposal calculated state-specific emission rate targets to be achieved based on the "Best System of Emission Reduction." In August 2015, the final Clean Power Plan was released, which established the Best System of Emission Reduction as including: (a) heat rate improvements; (b) increased utilization of existing combined-cycle natural gas-fueled generating facilities; and (c) increased deployment of new and incremental non-carbon generation placed in-service after 2012. The Clean Power Plan was stayed by the United States Supreme Court in February 2016 while litigation proceeded. On October 10, 2017, the EPA issued a proposal to repeal the Clean Power Plan, which was intended to achieve an overall reduction in carbon dioxide emissions from existing fossil-fueled electric generating units of 32% below 2005 levels. On June 19, 2019, the EPA repealed the Clean Power Plan and issued the Affordable Clean Energy rule, which fully replaced the Clean Power Plan. In the Affordable Clean Energy rule, the EPA determined that the best system of emissions reduction for existing coal-fueled power plants is limited to actions that can be taken at a point source facility, specifically heat rate improvements and identified a set of candidate technologies and measures that could improve heat rates. Measures taken to meet the standards of performance must be achieved at the source itself. States have until July 2022 to submit compliance plans to the EPA. The Affordable Clean Energy rule was challenged by environmental and health groups in the D.C. Circuit. On January 19, 2021, the D.C. Circuit vacated and remanded the Affordable Clean Energy rule to the EPA, finding that the rule "rested critically on a mistaken reading of the Clean Air Act" that limited the best system of emission reduction to actions taken at a facility. Until the EPA indicates its course of action in response to this decision, the full impacts on the Registrants cannot be determined. PacifiCorp, MidAmerican Energy, Nevada Power and Sierra Pacific have historically pursued cost-effective projects, including plant efficiency improvements, increased diversification of their generating fleets to include deployment of renewable and lower carbon generating resources, and advanced customer energy efficiency programs.

New Source Performance Standards for Methane Emissions

In August 2020, the EPA finalized regulations to rescind standards for methane emissions from the oil and gas sector. The changes eliminate requirements to regulate methane emissions from the production, processing, transmission and storage of oil and gas. The rule was immediately challenged by environmental and tribal groups, as well as numerous states. In January 2021, the D.C. Circuit lifted an administrative stay and allowed the rule to take effect, finding that groups challenging the rule had not met the standard for a long-term stay. Until such time as litigation is exhausted, the relevant Registrants cannot determine whether additional action may be required.
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Regional and State Activities

Several states have promulgated or otherwise participate in state-specific or regional laws or initiatives to report or mitigate GHG emissions. These are expected to impact the relevant Registrant, and include:

In June 2013, Nevada Senate Bill 123 ("SB 123") was signed into law. Among other things, SB 123 and regulations thereunder required Nevada Power to file with the PUCN an emission reduction and capacity replacement plan by May 1, 2014. In May 2014, Nevada Power filed its emissions reduction capacity replacement plan. The plan provided for the retirement or elimination of 300 MWs of coal-fueled generating capacity by December 31, 2014, another 250 MWs of coal-fueled generating capacity by December 31, 2017, and another 250 MWs of coal generating capacity by December 31, 2019, along with replacement of such capacity with a mixture of constructed, acquired or contracted renewable and non-technology specific generating units. The plan also sets forth the expected timeline and costs associated with decommissioning coal-fueled generating units that will be retired or eliminated pursuant to the plan. The PUCN has the authority to approve or modify the emission reduction and capacity replacement plan filed by Nevada Power. The PUCN may approve variations to Nevada Power's resource plans relative to requirements under SB 123. Refer to Nevada Power's Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the ERCR Plan.

Under the authority of California's Global Warming Solutions Act, which includes a series of policies aimed at returning California GHG emissions to 1990 levels by 2020, the California Air Resources Board adopted a GHG cap-and-trade program with an effective date of January 1, 2012; compliance obligations were imposed on entities beginning in 2013. PacifiCorp is subject to the cap-and-trade program as a retail service provider in California and an importer of wholesale energy into California. In 2015, Governor Jerry Brown issued an executive order to reduce emissions to 40% below 1990 levels by 2030 and 80% by 2050. In September 2016, California Senate Bill 32 was signed into law establishing GHG emissions reduction targets of 40% below 1990 levels by 2030.

The states of California, Washington and Oregon have adopted GHG emissions performance standards for base load electricity generating resources. Under the laws in California and Oregon, the emissions performance standards provide that emissions must not exceed 1,100 pounds of carbon dioxide per MWh. In September 2018, the Washington Department of Commerce amended the emissions performance standards to provide that GHG emissions for base load electricity generating resources must not exceed 925 pounds of carbon dioxide per MWh. These GHG emissions performance standards generally prohibit electric utilities from entering into long-term financial commitments (e.g., new ownership investments, upgrades, or new or renewed contracts with a term of five or more years) unless any base load generation supplied under long-term financial commitments comply with the GHG emissions performance standards.

In September 2016, the Washington State Department of Ecology issued a final rule regulating GHG emissions from sources in Washington. The rule regulates GHG including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride beginning in 2017 with three-year compliance periods thereafter (i.e., 2017-2019, 2020-2022, etc.). Under the rule, the Washington State Department of Ecology established GHG emissions reduction pathways for all covered entities. Covered entities may use emission reduction units, which may be traded with other covered entities, to meet their compliance requirements. PacifiCorp's resources that are covered under the rule include the Chehalis generating facility, which is a natural gas combined-cycle plant located in Washington state. PacifiCorp received its baseline emission order on December 17, 2017, which specified the emission reduction requirements for the Chehalis generating facility every three years beginning in 2017. The reduction requirements average 1.7% per year. However, the Washington State Department of Ecology suspended the compliance obligations of the Clean Air Rule after a Thurston County Superior Court judge ruled the state lacks authority to mandate reductions from indirect emitters. On January 16, 2020, the Washington Supreme Court affirmed that the rule limits the applicability of emission standards to actual emitters and cannot be expanded to non-emitters. The court also found that the rule itself is severable, so that the Washington State Department of Ecology may continue to enforce the rule as it applies to emitters. The case was remanded for further proceedings. Pending further action by the lower court, the rule itself remains suspended, but entities subject to the rule are required to continue reporting emissions.

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The Regional Greenhouse Gas Initiative, a mandatory, market-based effort to cap and reduce power sector GHG emissions in eleven Eastern states, required, beginning in 2009, the reduction of carbon dioxide emissions from the power sector of 10% by 2018. Following a program review in 2012, the nine Regional Greenhouse Gas Initiative states implemented a new 2014 cap which was approximately 45% lower than the 2012-2013 cap. The cap is reduced each year by 2.5% from 2015 to 2020. In December 2017, an updated model rule was released by the Regional Greenhouse Gas Initiative states which includes an additional 30% regional cap reduction between 2020 and 2030.

Renewable Portfolio Standards

Each state's RPS described below could significantly impact the relevant Registrant's consolidated financial results. Resources that meet the qualifying electricity requirements under each RPS vary from state to state. Each state's RPS requires some form of compliance reporting and the relevant Registrant can be subject to penalties in the event of noncompliance. Each Registrant believes it is in material compliance with all applicable RPS laws and regulations.

In 1983, Iowa became the first state in the United States to adopt a RPS requiring the state utilities to own or to contract for a combined total of 105 MWs of renewable generating capacity and associated energy production. The IUB allocated the 105-MW requirement between the two utilities in Iowa based on each utility's percentage of their combined estimated Iowa retail peak demand in 1990 resulting in MidAmerican Energy being allocated a RPS requirement of 55.2 MWs. The utility must meet its RPS obligation by either owning renewable energy production facilities located in Iowa or entering into long-term contracts to purchase or wheel electricity from renewable production facilities located in the utility's service area.

Since 1997, NV Energy has been required to comply with a RPS. In November 2020, Nevada voters approved a constitution amendment that requires the state to get at least half its electricity from renewable sources by 2030. Beginning in 2022, the state must get 22% of its electricity from renewable sources. That percentage is increased incrementally over eight years up to the 50% threshold by 2030. The state's previous RPS required utilities to get 25% of their electricity from renewable sources by 2025.

Utah's Energy Resource and Carbon Emission Reduction Initiative provides that, beginning in the year 2025, 20% of adjusted retail electric sales of all Utah utilities be supplied by renewable energy, if it is cost effective. Retail electric sales will be adjusted by deducting the amount of generation from sources that produce zero or reduced carbon emissions, and for sales avoided as a result of energy efficiency and DSM programs. Qualifying renewable energy sources can be located anywhere within the WECC, and RECs can be used.

The Oregon Renewable Energy Act ("OREA") provides a comprehensive renewable energy policy and RPS for Oregon. Subject to certain exemptions and cost limitations established in the law, PacifiCorp and other qualifying electric utilities must meet minimum qualifying electricity requirements for electricity sold to retail customers of at least 5% in 2011 through 2014, 15% in 2015 through 2019, and 20% in 2020 through 2024. In March 2016, Oregon Senate Bill 1547-B ("SB 1547-B"), the Clean Electricity and Coal Transition Plan, was signed into law. SB 1547-B requires coal-fueled resources be eliminated from Oregon's allocation of electricity by January 1, 2030 and increases the current RPS target from 25% in 2025 to 50% by 2040. SB 1547-B also implements new REC banking provisions, as well as the following interim RPS targets: 27% in 2025 through 2029, 35% in 2030 through 2034, 45% in 2035 through 2039, and 50% by 2040 and subsequent years. As required by the OREA, the OPUC has approved an automatic adjustment clause to allow an electric utility, including PacifiCorp, to recover prudently incurred costs of its investments in renewable energy generating facilities and associated transmission costs.

Washington's Energy Independence Act establishes a renewable energy target for qualifying electric utilities, including PacifiCorp. The requirements are 3% of retail sales by January 1, 2012 through 2015, 9% of retail sales by January 1, 2016 through 2019 and 15% of retail sales by January 1, 2020 and each year thereafter. In April 2013, Washington State Senate Bill 5400 ("SB 5400") was signed into law. SB 5400 expands the geographic area in which eligible renewable resources may be located to beyond the Pacific Northwest, allowing renewable resources located in all states served by PacifiCorp to qualify. SB 5400 also provides PacifiCorp with additional flexibility and options to meet Washington's renewable mandates. In May 2019, the state of Washington enacted Senate Bill 5116, the Clean Energy Transformation Act. The legislation, among other things, requires Washington utilities to be carbon neutral by January 1, 2030 and institutes a planning target of 100% non-emitting generation by 2045. Electric utilities must also eliminate from rates coal-fueled resources by December 31, 2025.

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The California RPS required all California retail sellers to procure an average of 20% of retail load from renewable resources by December 31, 2013, 25% by December 31, 2016 and 33% by December 31, 2020. In October 2015, California Senate Bill No. 350 became law and increased the RPS target to 50% by December 31, 2030. The state's RPS was further expanded in September 2018, when California Senate Bill 100 ("SB 100"), the 100 Percent Clean Energy Act of 2018 was signed into law. In addition to requiring retail sellers to meet a RPS target of 60% by 2030, SB 100 enabled a longer-term planning target for 100% of total California retail sales to come from eligible renewable energy resources and zero-carbon resources by December 31, 2045. In December 2011, the CPUC adopted a decision confirming that multi-jurisdictional utilities, such as PacifiCorp, are not subject to the percentage limits within the three product content categories of RPS-eligible resources established by the legislation that have been imposed on other California retail sellers.

Clean Air Act Regulations

The Clean Air Act is a federal law administered by the EPA that provides a framework for protecting and improving the nation's air quality and controlling sources of air emissions. The implementation of new standards is generally outlined in SIPs, which are a collection of regulations, programs and policies to be followed. SIPs vary by state and are subject to public hearings and EPA approval. Some states may adopt additional or more stringent requirements than those implemented by the EPA. The major Clean Air Act programs most directly affecting the Registrants' operations are described below.

National Ambient Air Quality Standards

Under the authority of the Clean Air Act, the EPA sets minimum NAAQS for six principal pollutants, consisting of carbon monoxide, lead, NOx, particulate matter, ozone and SO2, considered harmful to public health and the environment. Areas that achieve the standards, as determined by ambient air quality monitoring, are characterized as being in attainment, while those that fail to meet the standards are designated as being nonattainment areas. Generally, sources of emissions in a nonattainment area that are determined to contribute to the nonattainment are required to reduce emissions. Currently, with the exceptions described in the following paragraphs, air quality monitoring data indicates that all counties where the relevant Registrant's major emission sources are located are in attainment of the current NAAQS.

On June 4, 2018, EPA published final designations for much of the United States. Relevant to the Registrants, these designations include classifying Yuma County, Arizona; Clark County, Nevada; and the Northern Wasatch Front, Southern Wasatch Front and Duchesne and Uintah counties in Utah as nonattainment-marginal with the 2015 ozone standard. These areas will be required to meet the 2015 standard three years from the August 3, 2018, effective date. All other areas relevant to the Registrants were designated attainment/unclassifiable with this same action. On January 29, 2021, the D.C. Circuit vacated several provisions of the 2018 implementing rules for the 2015 ozone standards for contravening the Clean Air Act. Until the EPA takes final action consistent with this ruling, impacts to the relevant Registrants cannot be determined.

In January 2010, the EPA finalized a one-hour air quality standard for nitrogen dioxide at 100 parts per billion. In February 2012, the EPA published final designations indicating that based on air quality monitoring data, all areas of the country are designated as "unclassifiable/attainment" for the 2010 nitrogen dioxide NAAQS. On April 6, 2018, EPA issued a decision to retain the 2010 nitrogen dioxide NAAQS without revision.

In June 2010, the EPA finalized a new NAAQS for SO2. Under the 2010 rule, areas must meet a one-hour standard of 75 parts per billion utilizing a three-year average. The rule utilizes source modeling in addition to the installation of ambient monitors where SO2 emissions impact populated areas. Attainment designations were due by June 2012; however, citing a lack of sufficient information to make the designations, the EPA did not issue its final designations until July 2013 and determined, at that date, that a portion of Muscatine County, Iowa was in nonattainment for the one-hour SO2 standard. MidAmerican Energy's Louisa coal-fueled generating facility is located just outside of Muscatine County, south of the violating monitor. In its final designation, the EPA indicated that it was not yet prepared to conclude that the emissions from the Louisa coal-fueled generating facility contribute to the monitored violation or to other possible violations, and that in a subsequent round of designations, the EPA will make decisions for areas and sources outside Muscatine County. MidAmerican Energy does not believe a subsequent nonattainment designation will have a material impact on the Louisa coal-fueled generating facility. Although the EPA's July 2013 designations did not impact PacifiCorp's nor the Nevada Utilities' generating facilities, the EPA's assessment of SO2 area designations will continue with the deployment of additional SO2 monitoring networks across the country. On February 25, 2019, EPA issued a decision to retain the 2010 SO2 NAAQS without revision.

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The Sierra Club filed a lawsuit against the EPA in August 2013 with respect to the one-hour SO2 standards and its failure to make certain attainment designations in a timely manner. In March 2015, the United States District Court for the Northern District of California ("Northern District of California") accepted as an enforceable order an agreement between the EPA and Sierra Club to resolve litigation concerning the deadline for completing the designations. The Northern District of California's order directed the EPA to complete designations in three phases: the first phase by July 2, 2016; the second phase by December 31, 2017; and the final phase by December 31, 2020. The first phase of the designations require the EPA to designate two groups of areas: 1) areas that have newly monitored violations of the 2010 SO2 standard; and 2) areas that contain any stationary source that, according to the EPA's data, either emitted more than 16,000 tons of SO2 in 2012 or emitted more than 2,600 tons of SO2 and had an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012 and, as of March 2, 2015, had not been announced for retirement. MidAmerican Energy's George Neal Unit 4 and the Ottumwa Generating Station (in which MidAmerican Energy has a majority ownership interest, but does not operate), are included as units subject to the first phase of the designations, having emitted more than 2,600 tons of SO2 and having an emission rate of at least 0.45 lbs/SO2 per million British thermal unit in 2012. States may submit to the EPA updated recommendations and supporting information for the EPA to consider in making its determinations. Iowa submitted documentation to the EPA in April 2016 supporting its recommendation that Des Moines, Wapello and Woodbury Counties be designated as being in attainment of the standard. In July 2016, the EPA's final designations were published in the Federal Register indicating portions of Muscatine County, Iowa were in nonattainment with the 2010 SO2 standard, Woodbury County, Iowa was unclassifiable, and Des Moines and Wapello Counties were unclassifiable/attainment.

In December 2012, the EPA finalized more stringent fine particulate matter NAAQS, reducing the annual standard from 15 micrograms per cubic meter to 12 micrograms per cubic meter and retaining the 24-hour standard at 35 micrograms per cubic meter. The EPA did not set a separate secondary visibility standard, choosing to rely on the existing secondary 24-hour standard to protect against visibility impairment. In December 2014, the EPA issued final area designations for the 2012 fine particulate matter standard. Based on these designations, the areas in which the relevant Registrant operates generating facilities have been classified as "unclassifiable/attainment." Unless additional monitoring suggests otherwise, the relevant Registrant does not anticipate that any impacts of the revised standard will be significant. In December 2020, the EPA finalized its decision to retain, without revision, the existing primary and secondary standards for particulate matter. In June 2020, the EPA proposed a determination of attainment for the 2006 24-hour fine particulate matter for Salt Lake City and Provo serious nonattainment areas. The determination is based upon quality-assured, quality controlled and certified ambient air monitoring data showing that the area has attained the 2006 standard based on the 2017-2019 monitoring. The comment period for the proposal ended in August 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.

In December 2014, the Utah SIP for fine particulate matter was adopted by the Utah Air Quality Board. PacifiCorp's Lake Side, Lake Side 2, Gadsby Steam and Gadsby Peakers generating facilities operate within nonattainment areas for fine particulate matter; however, the SIP did not impose significant new requirements on PacifiCorp's impacted generating facilities, nor did the EPA's comments on the Utah SIP identify requirements for PacifiCorp's existing generating facilities that would have a material impact on its consolidated financial results.

Mercury and Air Toxics Standards

In March 2011, the EPA proposed a rule that requires coal-fueled generating facilities to reduce mercury emissions and other hazardous air pollutants through the establishment of "Maximum Achievable Control Technology" standards. The final MATS became effective on April 16, 2012 and required that new and existing coal-fueled generating facilities achieve emission standards for mercury, acid gases and other non-mercury hazardous air pollutants. Existing sources were required to comply with the new standards by April 16, 2015 with the potential for individual sources to obtain an extension of up to one additional year, at the discretion of the Title V permitting authority, to complete installation of controls or for transmission system reliability reasons. The relevant Registrants have completed emission reduction projects to comply with the final rule's standards for acid gases and non-mercury metallic hazardous air pollutants.

MidAmerican Energy retired certain coal-fueled generating units as the least-cost alternative to comply with the MATS. Walter Scott, Jr. Energy Center Units 1 and 2 were retired in 2015, and George Neal Energy Center Units 1 and 2 were retired in April 2016. A fifth unit, Riverside Generating Station, was limited to natural gas combustion in March 2015.


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Numerous lawsuits have been filed in the D.C. Circuit challenging the MATS. In April 2014, the D.C. Circuit upheld the MATS requirements. In November 2014, the United States Supreme Court agreed to hear the MATS appeal on the limited issue of whether the EPA unreasonably refused to consider costs in determining whether it is appropriate to regulate hazardous air pollutants emitted by electric utilities. Oral argument in the case was held before the United States Supreme Court in March 2015, and a decision was issued by the United States Supreme Court in June 2015, which reversed and remanded the MATS rule to the D.C. Circuit for further action. The United States Supreme Court held that the EPA had acted unreasonably when it deemed cost irrelevant to the decision to regulate generating facilities, and that cost, including costs of compliance, must be considered before deciding whether regulation is necessary and appropriate. The United States Supreme Court's decision did not vacate or stay implementation of the MATS rule. In December 2015, the D.C. Circuit issued an order remanding the rule to the EPA, without vacating the rule. As a result, the relevant Registrants continue to have a legal obligation under the MATS rule and the respective permits issued by the states in which each respective Registrant operates to comply with the MATS rule, including operating all emissions controls or otherwise complying with the MATS requirements.

In December 2018, the EPA issued a proposed revised supplemental cost finding for the MATS, as well as the required risk and technology review under Clean Air Act Section 112. The EPA proposed to determine that it is not appropriate and necessary to regulate hazardous air pollutant emissions from power plants under Section 112; however, the EPA proposed to retain the emission standards and other requirements of the MATS rule, because the EPA did not propose to remove coal- and oil-fueled power plants from the list of sources regulated under Section 112. In May 2020, the EPA published its decision to repeal the appropriate and necessary findings in the MATS rule and retain the overall emission standards. The rule took effect in July 2020. A number of petitions for review were filed in the D.C. Circuit by parties challenging and supporting the EPA's decision to rescind the appropriate and necessary finding. Until litigation over the rule is exhausted, the relevant Registrants cannot fully determine the impacts of the changes to the MATS rule.

In March 2020, the D.C. Circuit issued an opinion in Chesapeake Climate Action Network v. EPA regarding consolidated challenges to the EPA's startup and shutdown provisions contained in the 2012 MATS rule. The MATS rule's provisions governing startup and shutdown require electric generating units comply with work practice standards as opposed to numerical limits during these periods. The EPA denied petitions for reconsideration of these provisions in 2016 and environmentalists challenged this denial. The D.C. Circuit vacated the reconsideration denials, remanding the petition to the EPA for further action. The court did not make a determination on the merits of the arguments concerning the EPA's legal authority to set work practice standards. The existing work practice standards and the alternate definition for when startup ends continue to be applicable. Until the EPA finalizes action to respond to the court's order, the relevant Registrants cannot fully determine the impacts of the remand.

Cross-State Air Pollution Rule

The EPA promulgated an initial rule in March 2005 to reduce emissions of NOx and SO2, precursors of ozone and particulate matter, from down-wind sources in the eastern United States, including Iowa, to reduce emissions by implementing a plan based on a market-based cap-and-trade system, emissions reductions, or both. After numerous appeals, the CSAPR was promulgated to address interstate transport of SO2 and NOx emissions in 27 eastern and Midwestern states.

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The first phase of the rule was implemented January 1, 2015. In November 2015, the EPA released a proposed rule that would further reduce NOx emissions in 2017. The final "CSAPR Update Rule" was published in the Federal Register in October 2016 and required additional reductions in NOx emissions beginning in May 2017. On December 6, 2018, EPA finalized a rule to close out the CSAPR, having determined that the CSAPR Update for the 2008 ozone NAAQS fully addressed Clean Air Act interstate transport obligations of 20 eastern states. EPA determined that 2023 is an appropriate future analytic year to evaluate remaining good neighbor obligations and that there will be no remaining nonattainment or maintenance receptors with respect to the 2008 ozone NAAQS in the eastern United States in that year. Accordingly, the 20 CSAPR Update-affected states would not contribute significantly to nonattainment in, or interfere with maintenance of, any other state with regard to the 2008 ozone NAAQS. Both the CSAPR Update and the CSAPR Close-Out rules were challenged in the D.C. Circuit Court. The D.C. Circuit ruled September 13, 2019, that because the EPA allowed upwind States to continue to significantly contribute to downwind air quality problems beyond statutory deadlines, the CSAPR Update Rule provided only a partial remedy that did not fully address interstate ozone transport, and remanded the CSAPR Update Rule back to the EPA. The D.C. Circuit Court issued an opinion October 1, 2019, finding that because the CSAPR Close-Out Rule relied on the same faulty reasoning as the CSAPR Update rule, the CSAPR Close-Out Rule must be vacated. On October 15, 2020, the EPA proposed to tighten caps on emissions of NOx from power plants in 12 states in the CSAPR trading program in response to the D.C. Circuit's decision to vacate the CSAPR Update rule. The rule is intended to fully resolve 21 upwind states' remaining good neighbor obligations under the 2008 ozone NAAQS. Additional emissions reductions are required at power plants in 12 states, including Illinois; the EPA predicts that emissions from the remaining nine states, including Iowa and Texas, will not significantly contribute to downwind states' ability to attain or maintain the ozone standard. The EPA accepted comment on the proposal through December 15, 2020. Until the rule is finalized, the relevant Registrants cannot determine the impact on their operations.

The CSAPR provisions are not anticipated to have a material impact on the Registrants. MidAmerican Energy operates natural gas-fueled generating facilities in Iowa and BHE Renewables operates natural gas-fueled generating facilities in Texas, Illinois and New York, which are subject to the CSAPR. MidAmerican Energy has installed emissions controls at its coal-fueled generating facilities to comply with the CSAPR and may purchase emissions allowances to meet a portion of its compliance obligations. The cost of these allowances is subject to market conditions at the time of purchase and historically has not been material. MidAmerican Energy believes that the controls installed to date are consistent with the reductions to be achieved from implementation of the rule. None of PacifiCorp's, Nevada Power's or Sierra Pacific's generating facilities are subject to the CSAPR. However, in a Notice of Data Availability published in the January 6, 2017, Federal Register, the EPA provided preliminary estimates of which upwind states may have linkages to downwind states experiencing ozone levels at or exceeding the 2015 ozone NAAQS of 70 parts per billion, and, using similar methodology to that in the CSAPR, indicated that Utah and Wyoming could have an obligation under the "good neighbor" provisions of the Clean Air Act to reduce NOx emissions. Until such time as a rule is finalized, the relevant Registrants cannot determine whether additional action may be required.

Regional Haze

The EPA's Regional Haze Rule, finalized in 1999, requires states to develop and implement plans to improve visibility in designated federally protected areas ("Class I areas"). Some of PacifiCorp's coal-fueled generating facilities in Utah, Wyoming, Arizona and Colorado and certain of Nevada Power's and Sierra Pacific's fossil-fueled generating facilities are subject to the Clean Air Visibility Rules. In accordance with the federal requirements, states are required to submit SIPs that address emissions from sources subject to BART requirements and demonstrate progress towards achieving natural visibility requirements in Class I areas by 2064.

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The state of Utah issued a regional haze SIP requiring the installation of SO2, NOx and particulate matter controls on Hunter Units 1 and 2, and Huntington Units 1 and 2. In December 2012, the EPA approved the SO2 portion of the Utah regional haze SIP and disapproved the NOx and particulate matter portions. Subsequently, the Utah Division of Air Quality completed an alternative BART analysis for Hunter Units 1 and 2, and Huntington Units 1 and 2. In January 2016, the EPA published two alternative proposals to either approve the Utah SIP as written or reject the Utah SIP relating to NOx controls and require the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years. EPA's final action on the Utah regional haze SIP was effective August 4, 2016. The EPA approved in part and disapproved in part the Utah regional haze SIP and issued a federal implementation plan ("FIP") requiring the installation of SCR controls at Hunter Units 1 and 2 and Huntington Units 1 and 2 within five years of the effective date of the rule. PacifiCorp and other parties filed requests with the EPA to reconsider and stay that decision, as well as filed motions for stay and petitions for review with the Tenth Circuit Court of Appeals ("Tenth Circuit") asking the court to overturn the EPA's actions. In July 2017, the EPA issued a letter indicating it would reconsider its FIP decision. In light of the EPA's grant of reconsideration and the EPA's position in the litigation, the Tenth Circuit held the litigation in abeyance and imposed a stay of the compliance obligations of the FIP for the number of days the stay is in effect while the EPA conducts its reconsideration process. To support the reconsideration, PacifiCorp undertook additional air quality modeling using the Comprehensive Air Quality Model with Extensions ("CAMX") dispersion model. On January 14, 2019, the state of Utah submitted a SIP revision to the EPA, which includes the updated modeling information and additional analysis. On June 24, 2019, the Utah Air Quality Board unanimously voted to approve the Utah regional haze SIP revision, which incorporates a BART alternative into Utah's regional haze SIP. The BART alternative makes the shutdown of PacifiCorp's Carbon plant enforceable under the SIP and removes the requirement to install SCR technology on Hunter Units 1 and 2 and Huntington Units 1 and 2. The Utah Division of Air Quality submitted the SIP revision to the EPA for approval at the end of 2019. In January 2020, the EPA published its proposed approval of the Utah Regional Haze SIP Alternative, which makes the shutdown of the Carbon plant federally enforceable and adopts as BART the existing NOx controls and emission limits on the Hunter and Huntington plants. The proposed approval withdraws the FIP requirements to install SCR on Hunter Units 1 and 2 and Huntington Units 1 and 2. The EPA released the final rule approving the Utah Regional Haze SIP Alternative on October 28, 2020. With the approval, the EPA also finalized its withdrawal of the FIP requirements for the Hunter and Huntington plants. The Utah Regional Haze SIP Alternative took effect December 28, 2020. On January 11, 2021, the Tenth Circuit dismissed the Utah regional haze petitions on the basis of the final rule approved Utah's revised SIP and withdrawing the EPA's FIP. On January 19, 2021, Heal Utah, National Parks Conservation Association, Sierra Club and Utah Physicians for a Healthy Environment filed a petition for review of the Utah Regional Haze SIP Alternative in the Tenth Circuit.
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The state of Wyoming issued two regional haze SIPs requiring the installation of SO2, NOx and particulate matter controls on certain PacifiCorp coal-fueled generating facilities in Wyoming. The EPA approved the SO2 SIP in December 2012 and the EPA's approval was upheld on appeal by the Tenth Circuit in October 2014. In addition, the EPA initially proposed in June 2012 to disapprove portions of the NOx and particulate matter SIP and instead issue a FIP. The EPA withdrew its initial proposed actions on the NOx and particulate matter SIP and the proposed FIP, published a re-proposed rule in June 2013, and finalized its determination in January 2014, which aligns more closely with the SIP proposed by the state of Wyoming. The EPA's final action on the Wyoming SIP approved the state's plan to have PacifiCorp install low-NOx burners at Naughton Units 1 and 2, SCR controls at Naughton Unit 3 by December 2014, SCR controls at Jim Bridger Units 1 through 4 between 2015 and 2022, and low-NOx burners at Dave Johnston Unit 4. The EPA disapproved a portion of the Wyoming SIP and issued a FIP for Dave Johnston Unit 3, where it required the installation of SCR controls by 2019 or, in lieu of installing SCR controls, a commitment to shut down Dave Johnston Unit 3 by 2027, its currently approved depreciable life. The EPA also disapproved a portion of the Wyoming SIP and issued a FIP for the Wyodak coal-fueled generating facility, requiring the installation of SCR controls within five years (i.e., by 2019). The EPA action became final on March 3, 2014. PacifiCorp filed an appeal of the EPA's final action on Wyodak in March 2014. The state of Wyoming also filed an appeal of the EPA's final action, as did the Powder River Basin Resource Council, National Parks Conservation Association and Sierra Club. In September 2014, the Tenth Circuit issued a stay of the March 2019 compliance deadline for Wyodak, pending further action by the Tenth Circuit in the appeal. The EPA, U.S. Department of Justice, state of Wyoming and PacifiCorp executed a settlement agreement December 16, 2020, removing the requirement to install SCR in lieu of monthly and annual NOx emissions limits. The settlement agreement is subject to a comment period which runs through March 5, 2021. Litigation in the Tenth Circuit remains stayed pending finalization of the settlement agreement. In June 2014, the Wyoming Department of Environmental Quality issued a revised BART permit allowing Naughton Unit 3 to operate on coal through 2017 and providing for natural gas conversion of the unit in 2018. In 2017, the department approved an extension of the compliance date for Naughton Unit 3 to align with the requirements of the Wyoming SIP extending the requirement to cease coal firing to no later than January 30, 2019. The EPA issued final approval of the Wyoming SIP, including the Naughton Unit 3 gas conversion on March 21, 2019. PacifiCorp removed the unit from coal-fueled service on January 30, 2019, and its 2019 IRP Action Plan incorporates completion of the gas conversion, including all required regulatory notices and filings, by the end of 2020. On February 5, 2019, PacifiCorp submitted a reasonable progress reassessment permit application and reasonable progress determination for Jim Bridger Units 1 and 2, seeking a rescission of the December 2017 permit requiring the installation of SCR, to be replaced with permit imposing plant-wide emission limits to achieve better modeled visibility, fewer overall environmental impacts and lower costs of compliance. In May 2020, the Wyoming Air Quality Division issued a permit approving PacifiCorp's monthly and annual NOx and SO2 emission limits on the four Jim Bridger units and submitted a regional haze SIP revision to the EPA. The revised SIP grants approval of PacifiCorp's Jim Bridger reasonable progress reassessment application and incorporates PacifiCorp's proposed emission limits in lieu of the requirement to install SCR systems on Jim Bridger Units 1 and 2. The EPA is reviewing the SIP revisions.

The state of Arizona issued a regional haze SIP requiring, among other things, the installation of SO2, NOx and particulate matter controls on Cholla Unit 4. The EPA approved in part, and disapproved in part, the Arizona SIP and issued a FIP for the disapproved portions requiring SCR controls on Cholla Unit 4. PacifiCorp filed an appeal in the United States Court of Appeals for the Ninth Circuit ("Ninth Circuit") regarding the FIP as it relates to Cholla Unit 4, and the Arizona Department of Environmental Quality and other affected Arizona utilities filed separate appeals of the FIP as it relates to their interests. The Ninth Circuit issued an order in February 2015, holding the matter in abeyance while the parties pursued an alternate compliance approach for Cholla Unit 4. The Arizona Department of Environmental Quality's revision of the draft permit and revision to the Arizona regional haze SIP were approved by the EPA through final action published in the Federal Register on March 27, 2017, with an effective date of April 26, 2017. The final action allows Cholla Unit 4 to utilize coal until April 30, 2025 and convert to gas or otherwise cease burning coal by June 30, 2025. Retirement of Cholla Unit 4 was completed in December 2020.

The state of Colorado regional haze SIP requires SCR controls at Craig Unit 2 and Hayden Units 1 and 2, in which PacifiCorp has ownership interests. Each of those regional haze compliance projects are either already in service or currently being constructed. In addition, in February 2015, the state of Colorado finalized an amendment to its regional haze SIP relating to Craig Unit 1, in which PacifiCorp has an ownership interest, to require the installation of SCR controls by 2021. In September 2016, the owners of Craig Units 1 and 2 reached an agreement with state and federal agencies and certain environmental groups that were parties to the previous settlement requiring SCR to retire Unit 1 by December 31, 2025, in lieu of SCR installation, or alternatively to remove the unit from coal-fueled service by August 31, 2021 with an option to convert the unit to natural gas by August 31, 2023, in lieu of SCR installation. The terms of the agreement were approved by the Colorado Air Quality Board in December 2016, incorporated into an amended Colorado regional haze SIP in 2017 and approved by the EPA in August 2018. PacifiCorp identified a December 31, 2025, retirement date for Craig Unit 1 in its 2017 and 2019 IRPs.

Until the EPA takes final action in each state and decisions have been made in the pending appeals, PacifiCorp cannot fully determine the impacts of the Regional Haze Rule on its respective generating facilities.
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Water Quality Standards

The federal Water Pollution Control Act ("Clean Water Act") establishes the framework for maintaining and improving water quality in the United States through a program that regulates, among other things, discharges to and withdrawals from waterways. The Clean Water Act requires that cooling water intake structures reflect the "best technology available for minimizing adverse environmental impact" to aquatic organisms. After significant litigation, the EPA released a proposed rule under §316(b) of the Clean Water Act to regulate cooling water intakes at existing facilities. The final rule was released in May 2014, and became effective in October 2014. Under the final rule, existing facilities that withdraw at least 25% of their water exclusively for cooling purposes and have a design intake flow of greater than two million gallons per day are required to reduce fish impingement (i.e., when fish and other aquatic organisms are trapped against screens when water is drawn into a facility's cooling system) by choosing one of seven options. Facilities that withdraw at least 125 million gallons of water per day from waters of the United States must also conduct studies to help their permitting authority determine what site-specific controls, if any, would be required to reduce entrainment of aquatic organisms (i.e., when organisms are drawn into the facility). PacifiCorp and MidAmerican Energy are assessing the options for compliance at their generating facilities impacted by the final rule and will complete impingement and entrainment studies. PacifiCorp's Dave Johnston generating facility and all of MidAmerican Energy's coal-fueled generating facilities, except Louisa, Ottumwa and Walter Scott, Jr. Unit 4, which have water cooling towers, withdraw more than 125 million gallons per day of water from waters of the United States for once-through cooling applications. PacifiCorp's Jim Bridger, Naughton, Gadsby, Hunter and Huntington generating facilities currently utilize closed cycle cooling towers but are designed to withdraw more than two million gallons of water per day. The standards are required to be met as soon as possible after the effective date of the final rule, but no later than eight years thereafter. The costs of compliance with the cooling water intake structure rule cannot be fully determined until the prescribed studies are conducted and the respective state environmental agencies review the studies to determine whether additional mitigation technologies should be applied. If PacifiCorp's or MidAmerican Energy's existing intake structures require modification, the costs are not anticipated to be significant to the consolidated financial statements. Nevada Power and Sierra Pacific do not utilize once-through cooling water intake or discharge structures at any of their generating facilities. All of the Nevada Power and Sierra Pacific generating stations are designed to have either minimal or zero discharge; therefore, they are not impacted by the §316(b) final rule.

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In November 2015, the EPA published final effluent limitation guidelines and standards for the steam electric power generating sector which, among other things, regulate the discharge of bottom ash transport water, fly ash transport water, combustion residual leachate and non-chemical metal cleaning wastes. These guidelines, which had not been revised since 1982, were revised in response to the EPA's concerns that the addition of controls for air emissions has changed the effluent discharged from coal- and natural gas-fueled generating facilities. Under the originally promulgated guidelines, permitting authorities were required to include the new limits in each impacted facility's discharge permit upon renewal with the new limits to be met as soon as possible, beginning November 1, 2018 and fully implemented by December 31, 2023. On April 5, 2017, a request for reconsideration and administrative stay of the guidelines was filed with the EPA. The EPA granted the request for reconsideration on April 12, 2017, imposed an immediate administrative stay of compliance dates in the rule that had not passed judicial review and requested the court stay the pending litigation over the rule until September 12, 2017. On June 6, 2017, the EPA proposed to extend many of the compliance deadlines that would otherwise occur in 2018 and on September 18, 2017, the EPA issued a final rule extending certain compliance dates for flue gas desulfurization wastewater and bottom ash transport water limits until November 1, 2020. In a separate action, on April 12, 2019, the Fifth Circuit Court of Appeals vacated two aspects of the final effluent limitation guidelines, concerning discharge limits for (1) legacy wastewater from ash transport or treatment systems and (2) combustion residual leachate from landfills or settling ponds. The Fifth Circuit found that EPA's own data did not support the agency's conclusion that impoundments were the best technology available for these two waste streams. EPA must now complete a new effluent limitation guideline for these discharge limits. On November 22, 2019, the EPA proposed updates to the 2015 rule, specifically addressing flue gas desulfurization wastewater and bottom ash transport water. The rule was finalized in October 2020 and took effect December 14, 2020. EPA revised selenium limits on flue gas desulfurization wastewater and the zero-discharge requirements on bottom ash transport water associated with blowdown of ash handling systems and adjusted compliance dates to allow time to procure and install necessary technology. The rule does not address the wastestreams at issue in the Fifth Circuit Court of Appeal's April 2019 decision. While most of the issues raised by this rule are already being addressed through the CCR rule and are not expected to impose significant additional requirements on the facilities, the impact of the rule cannot be fully determined until any judicial review is conducted.

In April 2014, the EPA and the United States Army Corps of Engineers ("Corps of Engineers") issued a joint proposal to address "waters of the United States" to clarify protection under the Clean Water Act for streams and wetlands. The proposed rule comes as a result of United States Supreme Court decisions in 2001 and 2006 that created confusion regarding jurisdictional waters that were subject to permitting under either nationwide or individual permitting requirements. The final rule was released in May 2015 but is currently under appeal in multiple courts and a nationwide stay on the implementation of the rule was issued in October 2015. On January 13, 2017, the United States Supreme Court granted a petition to address jurisdictional challenges to the rule. The EPA plans to undertake a two-step process, with the first step to repeal the 2015 rule and the second step to carry out a notice-and-comment rulemaking in which a substantive re-evaluation of the definition of the "waters of the United States" will be undertaken. On July 27, 2017, the EPA and the Corps of Engineers issued a proposal to repeal the final rule and recodify the pre-existing rules pending issuance of a new rule, which was finalized September 12, 2019. On January 22, 2018, the United States Supreme Court issued its decision related to the jurisdictional challenges to the rule, holding that federal district courts, rather than federal appeals courts, have proper jurisdiction to hear challenges to the rule and instructed the Sixth Circuit Court of Appeals to dismiss the petitions for review for lack of jurisdiction, clearing the way for imposition of the rule in certain states barring final action by the EPA to formalize the extension of the compliance deadline. On December 11, 2018, the EPA and the Corps of Engineers proposed a revised definition of "waters of the United States" that is intended to further clarify jurisdictional questions, eliminate case-by-case determinations and narrow Clean Water Act jurisdiction to align with Justice Scalia's 2006 opinion in Rapanos v. United States. On January 23, 2020, the EPA and the Corps of Engineers signed the final rule narrowing the federal government's permitting authority under the Clean Water Act. The new Navigable Waters Protection Rule, which took effect 60 days after it was published in the Federal Register, redefines what waters qualify as navigable waters of the U.S. and are under Clean Water Act jurisdiction. Under the new rule, the Clean Water Act will be considered to cover territorial seas and traditional navigable waters; tributaries that flow into jurisdictional waters; wetlands that are directly adjacent to jurisdictional waters; and lakes, ponds and impoundments of jurisdictional waters. The agency and corps originally proposed six categories, but in the final version they collapsed ditches and impoundments into other categories. There are also 12 categories of waters that the agencies highlighted as being excluded from coverage, including groundwater, ephemeral streams and pools, prior converted cropland and waste treatment systems. Until the rule is fully litigated and finalized, the Registrants cannot predict the impact on overall compliance obligations.


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In April 2020, the United States Supreme Court established a new test for Clean Water Act jurisdiction in County of Maui, Hawaii v. Hawaii Wildlife Fund, finding that the statute can cover discharges of contaminated groundwater in certain circumstances. The United States Supreme Court outlined a seven-factor test to determine whether discharges conveyed through groundwater to surface water are "functionally equivalent" to direct discharges, finding that the time it takes for pollutants to travel through groundwater and the distance traveled are the two most important factors in the test. The United States Supreme Court remanded County of Maui, Hawaii to the Ninth Circuit Court of Appeals for further adjudication, which subsequently remanded the case to the district court to determine whether additional discovery is needed before applying the new seven-factor test. The EPA finalized guidance January 14, 2021, implementing County of Maui. The EPA utilized the United States Supreme Court's seven factors, plus an additional factor for the design and performance of the system or facility from which the pollutant is reached, to determine whether pollutants that reach surface waters after traveling through groundwater are a "functional equivalent" to a direct discharge that require a permit. Until the functional equivalent test and guidance are applied by the courts, the Registrants cannot determine the impact of this case on their operations.

In April 2020, the U.S. District Court of the District of Montana vacated nationwide permit 12, which provides an expedited route for projects like oil and gas pipelines and utility lines to achieve compliance with the Clean Water Act, finding that the Corps of Engineers, which implements the nationwide permit program, failed to conduct necessary programmatic consultation of nationwide permit 12 under the Endangered Species Act. The district court's vacatur, which was subsequently limited just to the Keystone XL pipeline project, the subject of the initial lawsuit, is on appeal to the Ninth Circuit Court of Appeals. On January 13, 2021, the Corps of Engineers finalized a rule modifying its nationwide permit program for certain activities affecting waters of the United States. The final rule restructures the nationwide permit program for utility lines by splitting the existing nationwide permit 12 into three separate nationwide permits – one for oil and gas, including pipelines; one for electrical and telecommunications; and one for water/sewer and other utilities. The Corps of Engineers included a biological assessment for the final rule but did not conduct a formal Endangered Species Act consultation in connection with reissuance of the nationwide permits. The Corps of Engineers reissued and revised 12 of 52 and added four new nationwide permits, which will be effective for a period of five years. The remaining nationwide permits are scheduled for renewal in advance of expiration in 2022. Until the nationwide permit challenges are fully litigated, the Registrants cannot determine the impact of this case on their operations.

Coal Combustion Byproduct Disposal

In May 2010, the EPA released a proposed rule to regulate the management and disposal of coal combustion byproducts under the RCRA. The final rule was released by the EPA on December 19, 2014, was published in the Federal Register on April 17, 2015 and was effective on October 19, 2015. The final rule regulates coal combustion byproducts as non-hazardous waste under RCRA Subtitle D and establishes minimum nationwide standards for the disposal of CCR. Under the final rule, surface impoundments and landfills utilized for coal combustion byproducts may need to be closed unless they can meet the more stringent regulatory requirements. The final rule requires regulated entities to post annual groundwater monitoring and corrective action reports. The first of these reports was posted to the respective Registrant's coal combustion rule compliance data and information websites in March 2018. Based on the results in those reports, additional action may be required under the rule.

At the time the rule was published in April 2015, PacifiCorp operated 18 surface impoundments and seven landfills that contained coal combustion byproducts. Prior to the effective date of the rule in October 2015, nine surface impoundments and three landfills were either closed or repurposed to no longer receive coal combustion byproducts and hence are not subject to the final rule. As PacifiCorp proceeded to implement the final coal combustion rule, it was determined that two surface impoundments located at the Dave Johnston generating facility were hydraulically connected and effectively constitute a single impoundment. In November 2017, a new surface impoundment was placed into service at the Naughton Generating Station. At the time the rule was published in April 2015, MidAmerican Energy owned or operated nine surface impoundments and four landfills that contain coal combustion byproducts. Prior to the effective date of the rule in October 2015, MidAmerican Energy closed or repurposed six surface impoundments to no longer receive coal combustion byproducts. Five of these surface impoundments were closed on or before December 21, 2017 and the sixth is undergoing closure. At the time the rule was published in April 2015, the Nevada Utilities operated ten evaporative surface impoundments and two landfills that contained coal combustion byproducts. Prior to the effective date of the rule in October 2015, the Nevada Utilities closed four of the surface impoundments, four impoundments discontinued receipt of coal combustion byproducts making them inactive and two surface impoundments remain active and subject to the final rule. The two landfills remain active and subject to the final rule.

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Multiple parties filed challenges over various aspects of the final rule in the D.C. Circuit in 2015, resulting in settlement of some of the issues and subsequent regulatory action by the EPA, including subjecting inactive surface impoundments to regulation. Oral argument was held by the D.C. Circuit on November 20, 2017 over certain portions of the 2015 rule that had not been settled or otherwise remanded. On August 21, 2018, the D.C. Circuit issued its opinion in Utility Solid Waste Activities Group v. EPA, finding it was arbitrary and capricious for EPA to allow unlined ash ponds to continue operating until some unknown point in the future when groundwater contamination could be detected. The D.C. Circuit vacated the closure section of the CCR rule and remanded the issue of unlined ponds to EPA for reconsideration with specific instructions to consider harm to the environment, not just to human health. The D.C. Circuit also held EPA's decision to not regulate legacy ponds was arbitrary and capricious. While the D.C. Circuit's decision was pending, the EPA, on March 15, 2018, issued a proposal to address provisions of the final CCR rule that were remanded back to the agency on June 14, 2016, by the D.C. Circuit. The proposal included provisions that establish alternative performance standards for owners and operators of CCR units located in states that have approved permit programs or are otherwise subject to oversight through a permit program administered by the EPA. The EPA finalized the first phase of the CCR rule amendments on July 30, 2018, with an effective date of August 28, 2018 (the "Phase 1, Part 1 rule"). In addition to adopting alternative performance standards and revising groundwater performance standards for certain constituents, EPA extended the deadline by which facilities must initiate closure of unlined ash ponds exceeding a groundwater protection standard and impoundments that do not meet the rule's aquifer location restrictions to October 31, 2020. Following submittal of competing motions from environmental groups and the EPA to stay or remand this deadline extension, on March 13, 2019, the D.C. Circuit granted EPA's request to remand the rule and left the October 31, 2020 deadline in place while the agency undertakes a new rulemaking establishing a new deadline for initiating closure. On August 14, 2019, the EPA released its "Phase 2" proposal, which contains targeted amendments to the CCR rule in response to court remands and EPA settlement agreements, as well as issues raised in a rulemaking petition. The Phase 2 proposal modifies the definition of "beneficial use" by replacing a mass-based threshold with new location-based criteria for triggering the need to conduct an environmental demonstration; establishes a definition of "CCR storage pile" to address the temporary storage of CCR on the ground, depending on whether the material is destined for disposal or beneficial use; makes certain changes to the rule's annual groundwater monitoring and corrective action reports to make it easier for the public to see and understand the data contained within the reports; modifies the requirements related to facilities' publicly available CCR rule websites to make the information more readily available; and establishes a risk-based groundwater monitoring protection standard for boron in the event the EPA decides to add boron to Appendix IV in the CCR rule. The EPA accepted comments on the Phase 2 proposal through October 15, 2019. On December 22, 2020, the EPA released a notice of data availability relating to the Phase 2 proposal to revise the CCR rule's definition of beneficial use and provisions governing piles of CCR on- and off-site prior to beneficial use. The new information presented by the notice includes data and information the EPA received during the comment period on the Phase 2 proposal. The EPA accepted comment on the notice of data availability through February 22, 2021. The EPA has not announced an anticipated timeline for completing the Phase 2 rule. In February 2020, the EPA proposed a federal CCR permit program as required by the WIIN Act of 2016. The proposal would require permits for all CCR units in states that do not have an EPA-approved CCR program. The proposal would establish individual, general and permit-by-rule permits; a tiered schedule for applications to prioritize permits for high-hazard potential CCR units; and postpone timelines for permit applications for all other CCR units. The EPA has not announced an anticipated timeline for completing the federal CCR permit rule. In October 2020, the EPA released an advanced notice of proposed rulemaking on legacy CCR surface impoundments, seeking comment on and information related to issues relevant to development of regulations for legacy impoundments. Issues identified by the EPA include the definition of a legacy impoundment, information on the universe of legacy impoundments, the types of regulatory requirements that should apply to legacy impoundments, and the EPA's regulatory authority to regulate legacy impoundments under RCRA subtitle D. The EPA accepted comment on the advanced notice through February 12, 2021. Until the proposals are finalized and fully litigated, the Registrants cannot determine whether additional action may be required.
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In August 2020, the EPA finalized its Holistic Approach to Closure: Part A rule ("Part A rule"). This proposal addressed the D.C. Circuit's revocation of the provisions that allow unlined impoundments to continue receiving ash. The Part A rule was finalized in August 2020 and establishes a new deadline of April 11, 2021, by which all unlined surface impoundments (including clay lined impoundments that do not otherwise meet the definition of "lined") must initiate closure. The Part A rule also identifies two extensions to that date: (1) a site-specific extension to develop alternate disposal capacity and initiate closure by October 15, 2023; and (2) a site-specific extension for facilities that agree to shut down the coal-fueled unit and complete ash pond closure activities by October 17, 2028. In addition to these closure deadline provisions, the Part A rule also finalized changes to the CCR rule's annual groundwater monitoring and corrective action reports and modified requirements related to CCR rule compliance websites initially proposed in the Phase 2 rule. PacifiCorp developed a demonstration for the development of alternative capacity for the Jim Bridger Plant FGD Pond 2 and a demonstration for closure of the Naughton Plant and ash pond and submitted them to the EPA in November 2020. Approval of these demonstrations is anticipated in first quarter 2021. No other Registrants used the provisions of the Part A rule. In December 2020, the EPA finalized its Holistic Approach to Closure: Part B rule ("Part B rule"), which establishes procedures for owners and operators of unlined ash ponds to demonstrate that the liner systems or underlying soils for these units perform as well as the liner criteria in the CCR rule. Additional provisions included in the proposed rule but not finalized, including the use of CCR in closure activities and allowing for the completion of groundwater corrective action during the post-closure care period, will be addressed in future rulemakings. As finalized, none of the relevant Registrants anticipate exercising the provisions of the Part B rule.

Separately, on August 10, 2017, the EPA issued proposed permitting guidance on how states' CCR permit programs should comply with the requirements of the final rule as authorized under the December 2016 Water Infrastructure Improvements for the Nation Act. Using that guidance, the state of Oklahoma applied for EPA approval of its state program and, on June 28, 2018, the EPA's approval of the application was published in the Federal Register. Environmental groups, including Waterkeeper Alliance and the Sierra Club, filed suit in the D.C. Circuit on September 26, 2018, alleging that the EPA unlawfully approved Oklahoma's permit program. This suit also incorporates claims first identified in a July 26, 2018 notice of intent to sue that alleged the EPA failed to perform nondiscretionary duties related to the development and publication of minimum guidelines for public participation in the approval of state permit programs for CCR. To date, none of the states in which the Registrants operate has applied for EPA approval of state permitting authority. The state of Utah adopted the federal final rule in September 2016, which required PacifiCorp to submit permit applications for two of its landfills by March 2017. It is anticipated that the state of Utah will apply for EPA approval of its CCR permit program prior to the end of 2021. In 2019, the state of Wyoming proposed to adopt state rules which incorporate the final federal rule by reference. It is anticipated that Wyoming will finalize its rule and seek the EPA's approval to implement a state permit program in 2021.

Notwithstanding the status of the final CCR rule, citizens' suits have been filed against regulated entities seeking judicial relief for contamination alleged to have been caused by releases of coal combustion byproducts. Some of these cases have been successful in imposing liability upon companies if coal combustion byproducts contaminate groundwater that is ultimately released or connected to surface water. In addition, actions have been filed against regulated entities seeking to require that surface impoundments containing CCR be subject to closure by removal rather than being allowed to effectuate closure in place as provided under the final rule. The Registrants are not a party to these lawsuits and until they are resolved, the Registrants cannot predict the impact on overall compliance obligations.

On January 20, 2021, President Biden issued an executive order on climate change which also required review of actions taken over the preceding four years that were harmful to "public health, environment, unsupported by the best available science, or otherwise not in the national best interest." The order included a non-exhaustive list of regulatory actions to be reviewed by the issuing agencies, including New Source Performance Standards for the power sector and the oil and gas sector, rescission of the Clean Power Plan, particulate matter and ozone NAAQS, steam electric effluent limitation guidelines, waters of the United States, reissuance of nationwide permits, and the phase one, part one and holistic approach to closure: parts A and B under the CCR rule. In addition, the Biden administration issued a regulatory freeze memorandum that prohibits submission of rules and guidance documents to the Federal Register without direct review, requires immediate withdrawal of rules and guidance documents submitted to the Federal Register but not yet published, and, for rules and guidance documents published but not yet having taken effect, consideration of a 60-day delay and possible additional comment period. Until the issuing agency completes its review and takes final action consistent with these directives, the relevant Registrant cannot determine whether additional action under any of these rules will be necessary.


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Other

Other laws, regulations and agencies to which the relevant Registrants are subject include, but are not limited to:
The federal Comprehensive Environmental Response, Compensation and Liability Act and similar state laws may require any current or former owners or operators of a disposal site, as well as transporters or generators of hazardous substances sent to such disposal site, to share in environmental remediation costs. Certain Registrants have been identified as potentially responsible parties in connection with certain disposal sites. The relevant Registrants have completed several cleanup actions and are participating in ongoing investigations and remedial actions. Costs associated with these actions are not expected to be material and are expected to be found prudent and included in rates.
The Nuclear Waste Policy Act of 1982, under which the United States DOE is responsible for the selection and development of repositories for, and the permanent disposal of, spent nuclear fuel and high-level radioactive wastes. Refer to Note 14 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 11 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K for additional information regarding MidAmerican Energy's nuclear decommissioning obligations.
The federal Surface Mining Control and Reclamation Act of 1977 and similar state statutes establish operational, reclamation and closure standards that must be met during and upon completion of PacifiCorp's mining activities.
The FERC evaluates hydroelectric systems to ensure environmental impacts are minimized, including the issuance of environmental impact statements for licensed projects both initially and upon relicensing. The FERC monitors the hydroelectric facilities for compliance with the license terms and conditions, which include environmental provisions. Refer to Note 16 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K and Note 14 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K for information regarding the relicensing of PacifiCorp's Klamath River hydroelectric system.

The Registrants expect they will be allowed to recover their respective prudently incurred costs to comply with the environmental laws and regulations discussed above. The Registrants' planning efforts take into consideration the complexity of balancing factors such as: (a) pending environmental regulations and requirements to reduce emissions, address waste disposal, ensure water quality and protect wildlife; (b) avoidance of excessive reliance on any one generation technology; (c) costs and trade-offs of various resource options including energy efficiency, demand response programs and renewable generation; (d) state-specific energy policies, resource preferences and economic development efforts; (e) additional transmission investment to reduce power costs and increase efficiency and reliability of the integrated transmission system; and (f) keeping rates affordable. Due to the number of generating units impacted by environmental regulations, deferring installation of compliance-related projects is often not feasible or cost effective and places the Registrants at risk of not having access to necessary capital, material, and labor while attempting to perform major equipment installations in a compressed timeframe concurrent with other utilities across the country. Therefore, the Registrants have established installation schedules with permitting agencies that coordinate compliance timeframes with construction and tie-in of major environmental compliance projects as units are scheduled off-line for planned maintenance outages; these coordinated efforts help reduce costs associated with replacement power and maintain system reliability.

Item 1A.    Risk Factors

Each Registrant is subject to numerous risks and uncertainties, including, but not limited to, those described below. Careful consideration of these risks, together with all of the other information included in this Form 10-K and the other public information filed by the relevant Registrant, should be made before making an investment decision. Additional risks and uncertainties not presently known or which each Registrant currently deems immaterial may also impair its business operations. Unless stated otherwise, the risks described below generally relate to each Registrant.

Corporate and Financial Structure Risks

BHE is a holding company and depends on distributions from subsidiaries, including joint ventures, to meet its obligations.

BHE is a holding company with no material assets other than the ownership interests in its subsidiaries and joint ventures, collectively referred to as its subsidiaries. Accordingly, cash flows and the ability to meet BHE's obligations are largely dependent upon the earnings of its subsidiaries and the payment of such earnings to BHE in the form of dividends or other distributions. BHE's subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay amounts due pursuant to BHE's senior debt, junior subordinated debt or its other obligations, or to make funds available, whether by dividends or other payments, for the payment of amounts due pursuant to BHE's senior debt, junior subordinated
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debt or its other obligations, and do not guarantee the payment of any of its obligations. Distributions from subsidiaries may also be limited by:
their respective earnings, capital requirements, and required debt and preferred stock payments;
the satisfaction of certain terms contained in financing, ring-fencing or organizational documents; and
regulatory restrictions that limit the ability of BHE's regulated utility subsidiaries to distribute profits.

BHE is substantially leveraged, the terms of its existing senior and junior subordinated debt do not restrict the incurrence of additional debt by BHE or its subsidiaries, and BHE's senior debt is structurally subordinated to the debt of its subsidiaries, and each of such factors could adversely affect BHE's consolidated financial results.

A significant portion of BHE's capital structure is comprised of debt, and BHE expects to incur additional debt in the future to fund items such as, among others, acquisitions, capital investments and the development and construction of new or expanded facilities. As of December 31, 2020, BHE had the following outstanding obligations:
senior unsecured debt of $13.4 billion;
junior subordinated debentures of $100 million;
guarantees and letters of credit in respect of subsidiary and equity method investments aggregating $1.3 billion; and
commitments, subject to satisfaction of certain specified conditions, to provide equity contributions in support of renewable tax equity investments totaling $563 million.

BHE's consolidated subsidiaries also have significant amounts of outstanding debt, which totaled $38.6 billion as of December 31, 2020. These amounts exclude (a) trade debt, (b) preferred stock obligations, (c) letters of credit in respect of subsidiary debt, and (d) BHE's share of the outstanding debt of its own or its subsidiaries' equity method investments.

Given BHE's substantial leverage, it may not have sufficient cash to service its debt, which could limit its ability to finance future acquisitions, develop and construct additional projects, or operate successfully under difficult conditions, including those brought on by adverse national and global economies, unfavorable financial markets or growth conditions where its capital needs may exceed its ability to fund them. BHE's leverage could also impair its credit quality or the credit quality of its subsidiaries, making it more difficult to finance operations or issue future debt on favorable terms, and could result in a downgrade in debt ratings by credit rating agencies.

The terms of BHE's and its subsidiaries' debt do not limit BHE's ability or the ability of its subsidiaries to incur additional debt or issue preferred stock. Accordingly, BHE or its subsidiaries could enter into acquisitions, new financings, refinancings, recapitalizations, leases or other highly leveraged transactions that could significantly increase BHE's or its subsidiaries' total amount of outstanding debt. The interest payments needed to service this increased level of debt could adversely affect BHE's or its subsidiaries' financial results. Many of BHE's subsidiaries' debt agreements contain covenants, or may in the future contain covenants, that restrict or limit, among other things, such subsidiaries' ability to create liens, sell assets, make certain distributions, incur additional debt or miss contractual deadlines or requirements, and BHE's ability to comply with these covenants may be affected by events beyond its control. Further, if an event of default accelerates a repayment obligation and such acceleration results in an event of default under some or all of BHE's other debt, BHE may not have sufficient funds to repay all of the accelerated debt simultaneously, and the other risks described under "Corporate and Financial Structure Risks" may be magnified as well.

Because BHE is a holding company, the claims of its senior debt holders are structurally subordinated with respect to the assets and earnings of its subsidiaries. Therefore, the rights of its creditors to participate in the assets of any subsidiary in the event of a liquidation or reorganization are subject to the prior claims of the subsidiary's creditors and preferred shareholders, if any. In addition, pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties, MidAmerican Energy's electric utility properties in the state of Iowa, Nevada Power's and Sierra Pacific's properties in the state of Nevada, AltaLink's transmission properties, the equity interest of MidAmerican Funding's subsidiary and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of solar and wind generation projects, are directly or indirectly pledged to secure their financings and, therefore, may be unavailable as potential sources of repayment of BHE's debt.

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A downgrade in BHE's credit ratings or the credit ratings of its subsidiaries, including the Subsidiary Registrants, could negatively affect BHE's or its subsidiaries' access to capital, increase the cost of borrowing or raise energy transaction credit support requirements.

BHE's senior unsecured debt and its subsidiaries' long-term debt, including the Subsidiary Registrants, are rated by various rating agencies. BHE cannot give assurance that its senior unsecured debt rating or any of its subsidiaries' long-term debt ratings will not be reduced in the future. Although none of the Registrants' outstanding debt has rating-downgrade triggers that would accelerate a repayment obligation, a credit rating downgrade would increase any such Registrant's borrowing costs and commitment fees on its revolving credit agreements and other financing arrangements, perhaps significantly. In addition, such Registrant would likely be required to pay a higher interest rate in future financings, and the potential pool of investors and funding sources would likely decrease. Further, access to the commercial paper market could be significantly limited, resulting in higher interest costs.

Similarly, any downgrade or other event negatively affecting the credit ratings of BHE's subsidiaries could make their costs of borrowing higher or access to funding sources more limited, which in turn could cause BHE to provide liquidity in the form of capital contributions or loans to such subsidiaries, thus reducing its and its subsidiaries' liquidity and borrowing capacity.

Most of the Registrants' large wholesale customers, suppliers and counterparties require such Registrant to have sufficient creditworthiness in order to enter into transactions, particularly in the wholesale energy markets. If the credit ratings of a Registrant were to decline, especially below investment grade, the relevant Registrant's financing costs and borrowings would likely increase because certain counterparties may require collateral in the form of cash, a letter of credit or some other form of security for existing transactions and as a condition to entering into future transactions with such Registrant. Amounts could be material and could adversely affect such Registrant's liquidity and cash flows.

BHE's majority shareholder, Berkshire Hathaway, could exercise control over BHE in a manner that would benefit Berkshire Hathaway to the detriment of BHE's creditors and BHE could exercise control over the Subsidiary Registrants in a manner that would benefit BHE to the detriment of the Subsidiary Registrants' creditors and PacifiCorp'spreferred stockholders.

Berkshire Hathaway is majority owner of BHE and has control over all decisions requiring shareholder approval. In circumstances involving a conflict of interest between Berkshire Hathaway and BHE's creditors, Berkshire Hathaway could exercise its control in a manner that would benefit Berkshire Hathaway to the detriment of BHE's creditors.

BHE indirectly owns all of the common stock of PacifiCorp, Nevada Power and Sierra Pacific and the membership interest in Eastern Energy Gas. BHE is also the sole member of MidAmerican Funding and, accordingly, indirectly owns all of MidAmerican Energy's common stock. As a result, BHE has control over all decisions requiring shareholder approval, including the election of directors. In circumstances involving a conflict of interest between BHE and the creditors of the Subsidiary Registrants, BHE could exercise its control in a manner that would benefit BHE to the detriment of the Subsidiary Registrants' creditors.

Business Risks

Much of BHE's growth has been achieved through acquisitions, and any such acquisition may not be successful.

Much of BHE's growth has been achieved through acquisitions. Future acquisitions may range from buying individual assets to the purchase of entire businesses. BHE will continue to investigate and pursue opportunities for future acquisitions that it believes, but cannot assure, may increase value and expand or complement existing businesses. BHE may participate in bidding or other negotiations at any time for such acquisition opportunities which may or may not be successful.

Any acquisition entails numerous risks, including, among others:
the failure to complete the transaction for various reasons, such as the inability to obtain the required regulatory approvals, materially adverse developments in the potential acquiree's business or financial condition or successful intervening offers by third parties;
the failure of the combined business to realize the expected benefits;
the risk that federal, state or foreign regulators or courts could require regulatory commitments or other actions in respect of acquired assets, potentially including programs, contributions, investments, divestitures and market mitigation measures;
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the risk of unexpected or unidentified issues not discovered in the diligence process; and
the need for substantial additional capital and financial investments.

An acquisition could cause an interruption of, or a loss of momentum in, the activities of one or more of BHE's subsidiaries. In addition, the final orders of regulatory authorities approving acquisitions may be subject to appeal by third parties. The diversion of BHE management's attention and any delays or difficulties encountered in connection with the approval and integration of the acquired operations could adversely affect BHE's combined businesses and financial results and could impair its ability to realize the anticipated benefits of the acquisition.

BHE cannot assure that future acquisitions, if any, or any integration efforts will be successful, or that BHE's ability to repay its obligations will not be adversely affected by any future acquisitions.

The Registrants are subject to operating uncertainties and events beyond each respective Registrant's control that impact the costs to operate, maintain, repair and replace utility and interstate natural gas pipeline systems, which could adversely affect each respective Registrant's financial results.

The operation of complex utility systems or interstate natural gas pipeline and storage systems that are spread over large geographic areas involves many operating uncertainties and events beyond each respective Registrant's control. These potential events include the breakdown or failure of the Registrants' thermal, nuclear, hydroelectric, solar, wind and other electricity generating facilities and related equipment, compressors, pipelines, transmission and distribution lines or other equipment or processes, which could lead to catastrophic events; unscheduled outages; strikes, lockouts or other labor-related actions; shortages of qualified labor; transmission and distribution system constraints; failure to obtain, renew or maintain rights-of-way, easements and leases on United States federal, Native American, First Nations or tribal lands; terrorist activities or military or other actions, including cyber attacks; fuel shortages or interruptions; unavailability of critical equipment, materials and supplies; low water flows and other weather-related impacts; performance below expected levels of output, capacity or efficiency; operator error; third-party excavation errors; unexpected degradation of pipeline systems; design, construction or manufacturing defects; and catastrophic events such as severe storms, floods, fires, earthquakes, explosions, landslides, an electromagnetic pulse, mining incidents, litigation, wars, terrorism, pandemics (including potentially in relation to COVID-19) and embargoes. A catastrophic event might result in injury or loss of life, extensive property damage or environmental or natural resource damages. For example, in the event of an uncontrolled release of water at one of PacifiCorp's high hazard potential hydroelectric dams, it is probable that loss of human life, disruption of lifeline facilities and property damage could occur in the downstream population and civil or other penalties could be imposed by the FERC. The extent of that liability would be determined by the applicable state law where any such damage occurred. Any of these events or other operational events could significantly reduce or eliminate the relevant Registrant's revenue or significantly increase its expenses, thereby reducing the availability of distributions to BHE. For example, if the relevant Registrant cannot operate its electricity or natural gas facilities at full capacity due to damage caused by a catastrophic event, its revenue could decrease and its expenses could increase due to the need to obtain energy from more expensive sources.

Further, the Registrants self-insure many risks, and current and future insurance coverage may not be sufficient to replace lost revenue or cover repair and replacement costs or other damages. The scope, cost and availability of each Registrant's insurance coverage may change, including the portion that is self-insured. Any reduction of each Registrant's revenue or increase in its expenses resulting from the risks described above, could adversely affect the relevant Registrant's financial results.

The Registrants are subject to increasing risk from catastrophic wildfires and may be unable to obtain enough insurance coverage at a reasonable cost or at all to adequately protect the Registrants from liability, which could materially affect the Registrants financial results and liquidity.

The risk of catastrophic and severe wildfires has increased in the western United States giving rise to large damage claims against utilities for fire-related losses. Catastrophic and severe wildfires can occur in PacifiCorp, Nevada Power and Sierra Pacific's ("Western Domestic Utilities") service territory even when the Western Domestic Utilities effectively implement their wildfire mitigation plans and prudently manage their systems.

In California, for example, where PacifiCorp operates, "inverse condemnation" currently exposes utilities to potential liability for property damages where the utility's electrical equipment was a substantial cause of the wildfire. California courts have held that utilities can be held liable under inverse condemnation without being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover attorney's fees. As a result of inverse condemnation being applied to utilities and wildfire damages, recent losses recorded by insurance companies, and the risk of an increase in the frequency, duration and size of wildfires, insurance for wildfire liabilities may not be available or may be available only at rates that are prohibitively expensive. In addition, even if insurance for wildfire liabilities is available, it may not be available in amounts
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necessary to cover potential losses. Uninsured losses and increases in the cost of insurance may be challenged when PacifiCorp seeks cost recovery and may not be recoverable in customer rates.

The Western Domestic Utilities monitor weather conditions with specific thresholds for designated high fire consequence areas to help ensure the safe and reliable operation of their systems during periods of elevated wildfire ignition risk. Should weather conditions become extreme, the Western Domestic Utilities may de-energize certain sections of their distribution and transmission facilities as a last resort to minimize risk to the public. These "public safety power shutoffs" could be subject to increased scrutiny by regulators and policy makers. And, although "public safety power shutoffs" are intended to minimize risk of wildfire ignition, de-energization may cause other damages for which the Western Domestic Utilities could be held liable.

Damage claims against PacifiCorp for the 2020 Wildfires (as defined below) may materially affect PacifiCorp's financial condition and results of operations.

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and California (the "2020 Wildfires"). The 2020 Wildfires spread over certain parts of PacifiCorp's service territory and surrounding areas in Oregon and California and are 100% contained. Investigations into the cause and origin of each wildfire are complex and ongoing. Although those investigations are not complete, several civil actions (including a putative class action) have been filed in Oregon and California on behalf of citizens and businesses who suffered damages from fires allegedly involving PacifiCorp's equipment. It is possible that additional lawsuits against PacifiCorp may be filed in Oregon or California with respect to the 2020 Wildfires. If PacifiCorp is found liable for damages related to the 2020 Wildfires and is unable to, or believes that it will be unable to, recover those damages through insurance or customer rates, or access the bank and capital markets on reasonable terms, PacifiCorp's financial results could be adversely affected. Refer to PacifiCorp's Note 14 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on the 2020 Wildfires.

Each Registrant's business could be adversely affected by COVID-19 or other pathogens, or similar crises.

Each Registrant's business could be adversely affected by the worldwide outbreak of COVID-19 generally and more specifically in the markets in which we operate, including, without limitation, if each Registrant's utility customers experience decreases in demand for their products and services or otherwise reduce their consumption of electricity or natural gas that the respective Registrant supplies, or if such Registrant experiences material payment defaults by its customers. For example, if the tourism industry in Nevada experiences a significant and extended decrease as a result of changes in customer behavior, demand for electricity sold by Nevada Power and Sierra Pacific could decrease. In addition, each Registrant's results and financial condition may be adversely affected by federal, state or local legislation related to COVID-19 (or other similar laws, regulations, orders or other governmental or regulatory actions) that would impose a moratorium on terminating electric or natural gas utility services, including related assessment of late fees, due to non-payment or other circumstances. Certain Registrants have already temporarily implemented certain of these measures, either voluntarily or in accordance with requirements of the respective Registrant's public utility commissions. These requirements will likely remain for the duration of the COVID-19 pandemic. Additionally, HomeServices' residential real estate brokerage business could experience a decline (which could be significant) in residential property transactions if potential customers elect to defer purchases in reaction to any substantial outbreak, or fear of such outbreak, of COVID-19 or other pathogen, or due to general economic uncertainty such as high unemployment levels, in some or all of the real estate markets in which HomeServices operates. The government and regulators could impose other requirements on each Registrant's business that could have an adverse impact on such Registrant's financial results.

Further, the recent outbreak of COVID-19, or another pathogen, could disrupt supply chains (including supply chains for energy generation, steel or transmission wire) relating to the markets each Registrant serves, which could adversely impact such Registrant's ability to generate or supply power. In addition, such disruptions to the supply chain could delay certain construction and other capital expenditure projects, including construction and repowering of the Registrants' renewable generation projects. Such disruptions could adversely affect the impacted Registrant's future financial results.

Such declines in demand, any inability to generate or supply power or delays in capital projects could also significantly reduce cash flows at BHE's subsidiaries, thereby reducing the availability of distributions to BHE, which could adversely affect its financial results.


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Each Registrant is subject to extensive federal, state, local and foreign legislation and regulation, including numerous environmental, health, safety, reliability, data privacy and other laws and regulations that affect its operations and costs. These laws and regulations are complex, dynamic and subject to new interpretations or change. In addition, new laws and regulations, including initiatives regarding deregulation and restructuring of the utility industry, are continually being proposed and enacted that impose new or revised requirements or standards on each Registrant.

Each Registrant is required to comply with numerous federal, state, local and foreign laws and regulations as described in "General Regulation" and "Environmental Laws and Regulations" in Item 1 of this Form 10-K that have broad application to each Registrant and limits the respective Registrant's ability to independently make and implement management decisions regarding, among other items, acquiring businesses; constructing, acquiring, disposing or retiring of operating assets; operating and maintaining generating facilities and transmission and distribution system assets; complying with pipeline safety and integrity and environmental requirements; setting rates charged to customers; establishing capital structures and issuing debt or equity securities; transacting between subsidiaries and affiliates; and paying dividends or similar distributions. These laws and regulations, which are followed in developing the Registrants' safety and compliance programs and procedures, are implemented and enforced by federal, state and local regulatory agencies, such as the Occupational Safety and Health Administration, the FERC, the EPA, the DOT, the NRC, the Federal Mine Safety and Health Administration and various state regulatory commissions in the United States, and foreign regulatory agencies, such as GEMA, which discharges certain of its powers through its staff within Ofgem, in Great Britain and the AUC in Alberta, Canada.

Compliance with applicable laws and regulations generally requires each Registrant to obtain and comply with a wide variety of licenses, permits, inspections, audits and other approvals. Further, compliance with laws and regulations can require significant capital and operating expenditures, including expenditures for new equipment, inspection, cleanup costs, removal and remediation costs and damages arising out of contaminated properties. Compliance activities pursuant to existing or new laws and regulations could be prohibitively expensive or otherwise uneconomical. As a result, each Registrant could be required to shut down some facilities or materially alter its operations. Further, each Registrant may not be able to obtain or maintain all required environmental or other regulatory approvals and permits for its operating assets or development projects. Delays in, or active opposition by third parties to, obtaining any required environmental or regulatory authorizations or failure to comply with the terms and conditions of the authorizations may increase costs or prevent or delay each Registrant from operating its facilities, developing or favorably locating new facilities or expanding existing facilities. If any Registrant fails to comply with any environmental or other regulatory requirements, such Registrant may be subject to penalties and fines or other sanctions, including changes to the way its electricity generating facilities are operated that may adversely impact generation or how the Pipeline Companies are permitted to operate their systems that may adversely impact throughput. The costs of complying with laws and regulations could adversely affect each Registrant's financial results. Not being able to operate existing facilities or develop new generating facilities to meet customer electricity needs could require such Registrant to increase its purchases of electricity on the wholesale market, which could increase market and price risks and adversely affect such Registrant's financial results.

Existing laws and regulations, while comprehensive, are subject to changes and revisions from ongoing policy initiatives by legislators and regulators and to interpretations that may ultimately be resolved by the courts. For example, changes in laws and regulations could result in, but are not limited to, increased competition and decreased revenues within each Registrant's service territories, such as the defeated Nevada Energy Choice Initiative; new environmental requirements, including the implementation of or changes to the Affordable Clean Energy rule, RPS and GHG emissions reduction goals; the issuance of new or stricter air quality standards; the implementation of energy efficiency mandates; the issuance of regulations governing the management and disposal of coal combustion byproducts; changes in forecasting requirements; changes to each Registrant's service territories as a result of condemnation or takeover by municipalities or other governmental entities, particularly where it lacks the exclusive right to serve its customers; the inability of each Registrant to recover its costs on a timely basis, if at all; new pipeline safety requirements; or a negative impact on each Registrant's current cost recovery arrangements. In addition to changes in existing legislation and regulation, new laws and regulations are likely to be enacted from time to time that impose additional or new requirements or standards on each Registrant. Adverse rulings in GHG-related cases could result in increased or changed regulations and could increase costs for GHG emitters, including the Registrants' generating facilities. The GHG rules, changes to those rules, and the Registrants' compliance requirements are subject to potential outcomes from proceedings and litigation challenging the rules.

New federal, regional, state and international accords, legislation, regulation, or judicial proceedings limiting GHG emissions could have a material adverse impact on the Registrants, the United States and the global economy. Companies and industries with higher GHG emissions, such as utilities with significant coal-fueled generating facilities, will be subject to more direct impacts and greater financial and regulatory risks. The impact is dependent on numerous factors, none of which can be meaningfully quantified at this time. These factors include, but are not limited to, the magnitude and timing of GHG emissions reduction requirements; the design of the requirements; the cost, availability and effectiveness of emissions control technology;
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the price, distribution method and availability of offsets and allowances used for compliance; government-imposed compliance costs; and the existence and nature of incremental cost recovery mechanisms. Examples of how new requirements may impact the Registrants include:
Additional costs may be incurred to purchase required emissions allowances under any market-based cap-and-trade system in excess of allocations that are received at no cost. These purchases would be necessary until new technologies could be developed and deployed to reduce emissions or lower carbon generation is available;
Acquiring and renewing construction and operating permits for new and existing generating facilities may be costly and difficult;
Additional costs may be incurred to purchase and deploy new generating technologies;
Costs may be incurred to retire existing coal-fueled generating facilities before the end of their otherwise useful lives or to convert them to burn fuels, such as natural gas or biomass, that result in lower emissions;
Operating costs may be higher and generating unit outputs may be lower;
Higher interest and financing costs and reduced access to capital markets may result to the extent that financial markets view climate change and GHG emissions as a greater business risk; and
The relevant Registrant's natural gas pipeline operations, electric transmission and retail sales may be impacted in response to changes in customer demand and requirements to reduce GHG emissions.

The impact of events or conditions caused by climate change, whether from natural processes or human activities, are uncertain and could vary widely, from highly localized to worldwide, and the extent to which a utility's operations may be affected is uncertain. Climate change may cause physical and financial risk through, among other things, sea level rise, changes in precipitation and extreme weather events. Consumer demand for energy may increase or decrease, based on overall changes in weather and as customers promote lower energy consumption through the continued use of energy efficiency programs or other means. Availability of resources to generate electricity, such as water for hydroelectric production and cooling purposes, may also be impacted by climate change and could influence the Registrants' existing and future electricity generating portfolio. These issues may have a direct impact on the costs of electricity production and increase the price customers pay or their demand for electricity.

Implementing actions required under, and otherwise complying with, new federal and state laws and regulations and changes in existing ones are among the most challenging aspects of managing utility operations. The Registrants cannot accurately predict the type or scope of future laws and regulations that may be enacted, changes in existing ones or new interpretations by agency orders or court decisions, nor can each Registrant determine their impact on it at this time; however, any one of these could adversely affect each Registrant's financial results through higher capital expenditures and operating costs, early closure of generating facilities or lower tax benefits or restrict or otherwise cause an adverse change in how each Registrant operates its business. To the extent that each Registrant is not allowed by its regulators to recover or cannot otherwise recover the costs to comply with new laws and regulations or changes in existing ones, the costs of complying with such additional requirements could have a material adverse effect on the relevant Registrant's financial results. Additionally, even if such costs are recoverable in rates, if they are substantial and result in rates increasing to levels that substantially reduce customer demand, this could have a material adverse effect on the relevant Registrant's financial results.

Recovery of costs and certain activities by each Registrant is subject to regulatory review and approval, and the inability to recover costs or undertake certain activities may adversely affect each Registrant's financial results.

State Regulatory Rate Review Proceedings

The Utilities establish rates for their regulated retail service through state regulatory proceedings. These proceedings typically involve multiple parties, including government bodies and officials, consumer advocacy groups and various consumers of energy, who have differing concerns but generally have the common objective of limiting rate increases or requesting rate decreases while also requiring the Utilities to ensure system reliability. Decisions are subject to judicial appeal, potentially leading to further uncertainty associated with the approval proceedings.

States set retail rates based in part upon the state regulatory commission's acceptance of an allocated share of total utility costs. When states adopt different methods to calculate interjurisdictional cost allocations, some costs may not be incorporated into rates of any state or other jurisdiction. Ratemaking is also generally done on the basis of estimates of normalized costs, so if a given year's realized costs are higher than normalized costs, rates may not be sufficient to cover those costs. In some cases, actual costs are lower than the normalized or estimated costs recovered through rates and from time-to-time may result in a state
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regulator requiring refunds to customers. Each state regulatory commission generally sets rates based on a test year established in accordance with that commission's policies. The test year data adopted by each state regulatory commission may create a lag between the incurrence of a cost and its recovery in rates. Each state regulatory commission also decides the allowed levels of expense, investment and capital structure that it deems are prudently incurred in providing the service and may disallow recovery in rates for any costs that it believes do not meet such standard. Additionally, each state regulatory commission establishes the allowed rate of return the Utilities will be given an opportunity to earn on their sources of capital. While rate regulation is premised on providing a fair opportunity to earn a reasonable rate of return on invested capital, the state regulatory commissions do not guarantee that each Registrant will be able to realize the allowed rate of return or recover all of its costs even if it believes such costs to be prudently incurred.

Some state regulatory commissions have authorized recovery of certain costs above the level assumed in establishing base rates through adjustment mechanisms, which may be subject to customer sharing. Any significant increase in fuel costs for electricity generation or purchased electricity costs could have a negative impact on the Utilities, despite efforts to minimize this impact through the use of hedging contracts and adjustment mechanisms or through future general regulatory rate reviews. Any of these consequences could adversely affect each Registrant's financial results.

FERC Jurisdiction

The FERC authorizes cost-based rates associated with transmission services provided by the Utilities' transmission facilities. Under the Federal Power Act, the Utilities, or MISO as it relates to MidAmerican Energy, may voluntarily file, or may be obligated to file, for changes, including general rate changes, to their system-wide transmission service rates. General rate changes implemented may be subject to refund. The FERC also has responsibility for approving both cost- and market-based rates under which the Utilities sell electricity in the wholesale market, has jurisdiction over most of PacifiCorp's hydroelectric generating facilities and has broad jurisdiction over energy markets. The FERC may impose price limitations, bidding rules and other mechanisms to address some of the volatility of these markets or could revoke or restrict the ability of the Utilities to sell electricity at market-based rates, which could adversely affect each Registrant's financial results. The FERC also maintains rules concerning standards of conduct, affiliate restrictions, interlocking directorates and cross-subsidization. As a transmission owning member of MISO, MidAmerican Energy is also subject to MISO-directed modifications of market rules, which are subject to FERC approval and operational procedures. As participants in EIM, PacifiCorp, Nevada Power and Sierra Pacific are also subject to applicable California ISO rules, which are subject to FERC approval and operational procedures. The FERC may also impose substantial civil penalties for any non-compliance with the Federal Power Act and the FERC's rules and orders.

The NERC has standards in place to ensure the reliability of the electric generation system and transmission grid. The Utilities are subject to the NERC's regulations and periodic audits to ensure compliance with those regulations. The NERC may carry out enforcement actions for non-compliance and administer significant financial penalties, subject to the FERC's review.

The FERC has jurisdiction over, among other things, the construction, abandonment, modification and operation of natural gas pipelines and related facilities used in the transportation, storage and sale of natural gas in interstate commerce, including all rates, charges and terms and conditions of service. The FERC also has market transparency authority and has adopted additional reporting and internet posting requirements for natural gas pipelines and buyers and sellers of natural gas.

Rates for the interstate natural gas transmission and storage operations at the Pipeline Companies, which include reservation, commodity, surcharges, fuel and gas lost and unaccounted for charges, are authorized by the FERC. In accordance with the FERC's rate-making principles, the Pipeline Companies' current maximum tariff rates are designed to recover prudently incurred costs included in their pipeline system's regulatory cost of service that are associated with the construction, operation and maintenance of their pipeline system and to afford the Pipeline Companies an opportunity to earn a reasonable rate of return. Nevertheless, the rates the FERC authorizes the Pipeline Companies to charge their customers may not be sufficient to recover the costs incurred to provide services in any given period. Moreover, from time to time, the FERC may change, alter or refine its policies or methodologies for establishing pipeline rates and terms and conditions of service. In addition, the FERC has the authority under Section 5 of the Natural Gas Act of 1938 ("NGA") to investigate whether a pipeline may be earning more than its allowed rate of return and, when appropriate, to institute proceedings against such pipeline to prospectively reduce rates. Any such proceedings, if instituted, could result in significantly adverse rate decreases.

Under FERC policy, interstate pipelines and their customers may execute contracts at negotiated rates, which may be above or below the maximum tariff rate for that service or the pipeline may agree to provide a discounted rate, which would be a rate between the maximum and minimum tariff rates. In a rate proceeding, rates in these contracts are generally not subject to adjustment. It is possible that the cost to perform services under negotiated or discounted rate contracts will exceed the cost used in the determination of the negotiated or discounted rates, which could result either in losses or lower rates of return for providing such services. Under certain circumstances, FERC policy allows interstate natural gas pipelines to design new
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maximum tariff rates to recover such costs in regulatory rate reviews. However, with respect to discounts granted to affiliates, the interstate natural gas pipeline must demonstrate that the discounted rate was necessary in order to meet competition.

GEMA Jurisdiction

The Northern Powergrid Distribution Companies, as Distribution Network Operators ("DNOs") and holders of electricity distribution licenses, are subject to regulation by GEMA. Most of the revenue of a DNO is controlled by a distribution price control formula set out in the electricity distribution license. The price control formula does not directly constrain profits from year-to-year, but is a control on revenue that operates independent of a significant portion of the DNO's actual costs. A resetting of the formula does not require the consent of the DNO, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom's Competition and Markets Authority. GEMA is able to impose financial penalties on DNOs that contravene any of their electricity distribution license duties or certain of their duties under British law, or fail to achieve satisfactory performance of individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the DNO's revenue. During the term of any price control, additional costs have a direct impact on the financial results of the Northern Powergrid Distribution Companies.

AUC Jurisdiction

The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of new transmission projects in Alberta. The AUC also investigates and rules on regulated rate disputes and system access problems.

The AUC regulates and oversees Alberta's electricity transmission sector with broad authority that may impact many of AltaLink's activities, including its tariffs, rates, construction, operations and financing. The AUC has various core functions in regulating the Alberta electricity transmission sector, including the following:
regulating and adjudicating issues related to the operation of electric utilities within Alberta;
processing and approving general tariff applications relating to revenue requirements and rates of return including deemed capital structure for regulated utilities while ensuring that utility rates are just and reasonable and approval of the transmission tariff rates of regulated transmission providers by the AESO, which is the independent transmission system operator in Alberta that controls the operation of AltaLink's transmission system;
approving the need for new electricity transmission facilities and permits to build and licenses to operate electricity transmission facilities;
reviewing operations and accounts from electric utilities and conducting on-site inspections to ensure compliance with industry regulations and standards;
adjudicating enforcement issues including the imposition of administrative penalties that arise when market participants violate the rules of the AESO; and
collecting, storing, analyzing, appraising and disseminating information to effectively fulfill its duties as an industry regulator.

In addition, AUC approval is required in connection with new energy and regulated utility initiatives in Alberta, amendments to existing approvals and financing proposals by designated utilities.

Physical or cyber attacks, both threatened and actual, could impact each Registrant's operations and could adversely affect its financial results.

Each Registrant relies on technology in virtually all aspects of its business. Like those of many large businesses, certain of the Registrant's technology systems have been subject to computer viruses, malicious codes, unauthorized access, phishing efforts, denial-of-service attacks and other cyber attacks and each Registrant expects to be subject to similar attacks in the future as such attacks become more sophisticated and frequent. A significant disruption or failure of its technology systems by physical or cyber attack could result in service interruptions, safety failures, security events, regulatory compliance failures, an inability to protect information and assets against unauthorized users, and other operational difficulties. Attacks perpetrated against each Registrant's systems could result in loss of assets and critical information and expose it to remediation costs and reputational damage.

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Although the Registrants have taken steps intended to mitigate these risks, a significant disruption or cyber intrusion could adversely affect each Registrant's financial results. Cyber attacks could further adversely affect each Registrant's ability to operate facilities, information technology and business systems, or compromise sensitive customer and employee information. In addition, physical or cyber attacks against key suppliers or service providers could have a similar effect on each Registrant. Additionally, if each Registrant is unable to acquire, develop, implement, adopt or protect rights around new technology, it may suffer a competitive disadvantage.

Each Registrant is actively pursuing, developing and constructing new or expanded facilities, the completion and expected costs of which are subject to significant risk, and each Registrant has significant funding needs related to its planned capital expenditures.

Each Registrant actively pursues, develops and constructs new or expanded facilities. Each Registrant expects to incur significant annual capital expenditures over the next several years. Such expenditures may include construction and other costs for new electricity generating facilities, electric transmission or distribution projects, environmental control and compliance systems, natural gas storage facilities, new or expanded pipeline systems, and continued maintenance and upgrades of existing assets.

Development and construction of major facilities are subject to substantial risks, including fluctuations in the price and availability of commodities, manufactured goods, equipment, and the imposition of tariffs thereon when sourced by foreign providers, labor, siting and permitting and changes in environmental and operational compliance matters, load forecasts and other items over a multi-year construction period, as well as counterparty risk and the economic viability of the Registrants' suppliers, customers and contractors. Certain of the Registrants' construction projects are substantially dependent upon a single supplier or contractor and replacement of such supplier or contractor may be difficult and cannot be assured. These risks may result in the inability to timely complete a project or higher than expected costs to complete an asset and place it in-service and, in extreme cases, the loss of the power purchase agreements or other long-term off-take contracts underlying such projects. Such costs may not be recoverable in the regulated rates or market or contract prices each Registrant is able to charge its customers. Delays in construction of renewable projects may result in delayed in-service dates which may result in the loss of anticipated revenue or income tax benefits. It is also possible that additional generation needs may be obtained through power purchase agreements, which could increase long-term purchase obligations and force reliance on the operating performance of a third party. The inability to successfully and timely complete a project, avoid unexpected costs or recover any such costs could adversely affect such Registrant's financial results.

Furthermore, each Registrant depends upon both internal and external sources of liquidity to provide working capital and to fund capital requirements. If BHE does not provide needed funding to its subsidiaries and the subsidiaries are unable to obtain funding from external sources, they may need to postpone or cancel planned capital expenditures.

A significant sustained decrease in demand for electricity or natural gas in the markets served by each Registrant would decrease its operating revenue, could impact its planned capital expenditures and could adversely affect its financial results.

A significant sustained decrease in demand for electricity or natural gas in the markets served by each Registrant would decrease its operating revenue, could impact its planned capital expenditures and could adversely affect its financial results. Factors that could lead to a decrease in market demand include, among others:
a depression, recession or other adverse economic condition that results in a lower level of economic activity or reduced spending by consumers on electricity or natural gas;
an increase in the market price of electricity or natural gas or a decrease in the price of other competing forms of energy;
shifts in competitively priced natural gas supply sources away from the sources connected to the Pipeline Companies' systems, including shale gas sources;
efforts by customers, legislators and regulators to reduce the consumption of electricity generated or distributed by each Registrant through various existing laws and regulations, as well as, deregulation, conservation, energy efficiency and private generation measures and programs;
laws mandating or encouraging renewable energy sources, which may decrease the demand for electricity and natural gas or change the market prices of these commodities;
higher fuel taxes or other governmental or regulatory actions that increase, directly or indirectly, the cost of natural gas or other fuel sources for electricity generation or that limit the use of natural gas or the generation of electricity from fossil fuels;
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a shift to more energy-efficient or alternative fuel machinery or an improvement in fuel economy, whether as a result of technological advances by manufacturers, legislation mandating higher fuel economy or lower emissions, price differentials, incentives or otherwise;
a reduction in the state or federal subsidies or tax incentives that are provided to agricultural, industrial or other customers, or a significant sustained change in prices for commodities such as ethanol or corn for ethanol manufacturers; and
sustained mild weather that reduces heating or cooling needs.

Each Registrant's operating results may fluctuate on a seasonal and quarterly basis and may be adversely affected by weather.

In most parts of the United States and other markets in which each Registrant operates, demand for electricity peaks during the summer months when irrigation and cooling needs are higher. Market prices for electricity also generally peak at that time. In other areas, including the western portion of PacifiCorp's service territory, demand for electricity peaks during the winter when heating needs are higher. In addition, demand for natural gas and other fuels generally peaks during the winter. This is especially true in MidAmerican Energy's and Sierra Pacific's retail natural gas businesses. Further, extreme weather conditions, such as heat waves, winter storms or floods could cause these seasonal fluctuations to be more pronounced. Periods of low rainfall or snowpack may negatively impact electricity generation at PacifiCorp's hydroelectric generating facilities, which may result in greater purchases of electricity from the wholesale market or from other sources at market prices. Additionally, PacifiCorp and MidAmerican Energy have added substantial wind-powered generating capacity, and BHE's unregulated subsidiaries are adding solar and wind-powered generating capacity, each of which is also a climate-dependent resource.

As a result, the overall financial results of each Registrant may fluctuate substantially on a seasonal and quarterly basis. Each Registrant has historically provided less service, and consequently earned less income, when weather conditions are mild. Unusually mild weather in the future may adversely affect each Registrant's financial results through lower revenue or margins. Conversely, unusually extreme weather conditions could increase each Registrant's costs to provide services and could adversely affect its financial results. The extent of fluctuation in each Registrant's financial results may change depending on a number of factors related to its regulatory environment and contractual agreements, including its ability to recover energy costs, the existence of revenue sharing provisions as it relates to MidAmerican Energy and Nevada Power, and terms of its wholesale sale contracts.

Each Registrant is subject to market risk associated with the wholesale energy markets, which could adversely affect its financial results.

In general, each Registrant's primary market risk is adverse fluctuations in the market price of wholesale electricity and fuel, including natural gas, coal and fuel oil, which is compounded by volumetric changes affecting the availability of or demand for electricity and fuel. The market price of wholesale electricity may be influenced by several factors, such as the adequacy or type of generating capacity, scheduled and unscheduled outages of generating facilities, prices and availability of fuel sources for generation, disruptions or constraints to transmission and distribution facilities, weather conditions, demand for electricity, economic growth and changes in technology. Volumetric changes are caused by fluctuations in generation or changes in customer needs that can be due to the weather, electricity and fuel prices, the economy, regulations or customer behavior. For example, the Utilities purchase electricity and fuel in the open market as part of their normal operating businesses. If market prices rise, especially in a time when larger than expected volumes must be purchased at market prices, the Utilities may incur significantly greater expense than anticipated. Likewise, if electricity market prices decline in a period when the Utilities are a net seller of electricity in the wholesale market, the Utilities could earn less revenue. Although the Utilities have ECAMs, the risks associated with changes in market prices may not be fully mitigated due to customer sharing bands as it relates to PacifiCorp and other factors.

Potential terrorist activities and the impact of military or other actions, could adversely affect each Registrant's financial results.

The ongoing threat of terrorism and the impact of military or other actions by nations or politically, ethnically or religiously motivated organizations regionally or globally may create increased political, economic, social and financial market instability, which could subject each Registrant's operations to increased risks. Additionally, the United States government has issued warnings that energy assets, specifically pipeline, nuclear generation, transmission and other electric utility infrastructure, are potential targets for terrorist attacks. Political, economic, social or financial market instability or damage to or interference with the operating assets of the Registrants, customers or suppliers may result in business interruptions, lost revenue, higher commodity prices, disruption in fuel supplies, lower energy consumption and unstable markets, particularly with respect to
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electricity and natural gas, and increased security, repair or other costs, any of which may materially adversely affect each Registrant in ways that cannot be predicted at this time. Any of these risks could materially affect its consolidated financial results. Furthermore, instability in the financial markets as a result of terrorism or war could also materially adversely affect each Registrant's ability to raise capital.

Certain Registrants are subject to the unique risks associated with nuclear generation.

The ownership and operation of nuclear power plants, such as MidAmerican Energy's 25% ownership interest in Quad Cities Station, involves certain risks. These risks include, among other items, mechanical or structural problems, inadequacy or lapses in maintenance protocols, the impairment of reactor operation and safety systems due to human error, the costs of storage, handling and disposal of nuclear materials, compliance with and changes in regulation of nuclear power plants, limitations on the amounts and types of insurance coverage commercially available, and uncertainties with respect to the technological and financial aspects of decommissioning nuclear facilities at the end of their useful lives. Additionally, Exelon Generation, the 75% owner and operator of the facility, may respond to the occurrence of any of these or other risks in a manner that negatively impacts MidAmerican Energy, including closure of Quad Cities Station prior to the expiration of its operating license. The prolonged unavailability, or early closure, of Quad Cities Station due to operational or economic factors could have a materially adverse effect on the relevant Registrant's financial results, particularly when the cost to produce power at the plant is significantly less than market wholesale prices. The following are among the more significant of these risks:
Operational Risk - Operations at any nuclear power plant could degrade to the point where the plant would have to be shut down. If such degradations were to occur, the process of identifying and correcting the causes of the operational downgrade to return the plant to operation could require significant time and expense, resulting in both lost revenue and increased fuel and purchased electricity costs to meet supply commitments. Rather than incurring substantial costs to restart the plant, the plant could be shut down. Furthermore, a shut-down or failure at any other nuclear power plant could cause regulators to require a shut-down or reduced availability at Quad Cities Station.
In addition, issues relating to the disposal of nuclear waste material, including the availability, unavailability and expense of a permanent repository for spent nuclear fuel could adversely impact operations as well as the cost and ability to decommission nuclear power plants, including Quad Cities Station, in the future.

Regulatory Risk - The NRC may modify, suspend or revoke licenses and impose civil penalties for failure to comply with applicable Atomic Energy Act regulations or the terms of the licenses of nuclear facilities. Unless extended, the NRC operating licenses for Quad Cities Station will expire in 2032. Changes in regulations by the NRC could require a substantial increase in capital expenditures or result in increased operating or decommissioning costs.

Nuclear Accident and Catastrophic Risks - Accidents and other unforeseen catastrophic events have occurred at nuclear facilities other than Quad Cities Station, both in the United States and elsewhere, such as at the Fukushima Daiichi nuclear power plant in Japan as a result of the earthquake and tsunami in March 2011. The consequences of an accident or catastrophic event can be severe and include loss of life and property damage. Any resulting liability from a nuclear accident or catastrophic event could exceed the relevant Registrant's resources, including insurance coverage.

Certain of BHE's subsidiaries are subject to the risk that customers will not renew their contracts or that BHE's subsidiaries will be unable to obtain new customers for expanded capacity, each of which could adversely affect its financial results.

If BHE's subsidiaries are unable to renew, remarket, or find replacements for their customer agreements on favorable terms, BHE's subsidiaries' sales volumes and operating revenue would be exposed to reduction and increased volatility. For example, without the benefit of long-term transportation agreements, BHE cannot assure that the Pipeline Companies will be able to transport natural gas at efficient capacity levels. Substantially all of the Pipeline Companies' revenues are generated under transportation, storage and LNG contracts that periodically must be renegotiated and extended or replaced, and the Pipeline Companies are dependent upon relatively few customers for a substantial portion of their revenue. Similarly, without long-term power purchase agreements, BHE cannot assure that its unregulated power generators will be able to operate profitably. Failure to maintain existing long-term agreements or secure new long-term agreements, or being required to discount rates significantly upon renewal or replacement, could adversely affect BHE's consolidated financial results. The replacement of any existing long-term agreements depends on market conditions and other factors that may be beyond BHE's subsidiaries' control.

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Each Registrant is subject to counterparty risk, which could adversely affect its financial results.

Each Registrant is subject to counterparty credit risk related to contractual payment obligations with wholesale suppliers and customers. Adverse economic conditions or other events affecting counterparties with whom each Registrant conducts business could impair the ability of these counterparties to meet their payment obligations. Each Registrant depends on these counterparties to remit payments on a timely basis. Each Registrant continues to monitor the creditworthiness of its wholesale suppliers and customers in an attempt to reduce the impact of any potential counterparty default. If strategies used to minimize these risk exposures are ineffective or if any Registrant's wholesale suppliers' or customers' financial condition deteriorates or they otherwise become unable to pay, it could have a significant adverse impact on each Registrant's liquidity and its financial results.

Each Registrant is subject to counterparty performance risk related to performance of contractual obligations by wholesale suppliers, customers and contractors. Each Registrant relies on wholesale suppliers to deliver commodities, primarily natural gas, coal and electricity, in accordance with short- and long-term contracts. Failure or delay by suppliers to provide these commodities pursuant to existing contracts could disrupt the delivery of electricity and require the Utilities to incur additional expenses to meet customer needs. In addition, when these contracts terminate, the Utilities may be unable to purchase the commodities on terms equivalent to the terms of current contracts.

Each Registrant relies on wholesale customers to take delivery of the energy they have committed to purchase. Failure of customers to take delivery may require the relevant Registrant to find other customers to take the energy at lower prices than the original customers committed to pay. If each Registrant's wholesale customers are unable to fulfill their obligations, there may be a significant adverse impact on its financial results.

The Northern Powergrid Distribution Companies' customers are concentrated in a small number of electricity supply businesses with RWE Npower PLC and British Gas Trading Limited accounting for approximately 15% and 12%, respectively, of distribution revenue in 2020. AltaLink's primary source of operating revenue is the AESO. Generally, a single customer purchases the energy from BHE's independent power projects in the United States and the Philippines pursuant to long-term power purchase agreements. For example, certain of BHE Renewables' solar and wind independent power projects sell all of their electrical production to either Pacific Gas and Electric Company or Southern California Edison Company, respectively. Any material payment or other performance failure by the counterparties in these arrangements could have a significant adverse impact on BHE's consolidated financial results.

BHE owns investments and projects in foreign countries that are exposed to risks related to fluctuations in foreign currency exchange rates and increased economic, regulatory and political risks.

BHE's business operations and investments outside the United States increase its risk related to fluctuations in foreign currency exchange rates, primarily the British pound and the Canadian dollar. BHE's principal reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from its foreign operations changes with the fluctuations of the currency in which they transact. BHE indirectly owns a hydroelectric power plant in the Philippines and may acquire significant energy-related investments and projects outside of the United States. BHE may selectively reduce some foreign currency exchange rate risk by, among other things, requiring contracted amounts be settled in, or indexed to, United States dollars or a currency freely convertible into United States dollars, or hedging through foreign currency derivatives. These efforts, however, may not be effective and could negatively affect BHE's consolidated financial results.

In addition to any disruption in the global financial markets, the economic, regulatory and political conditions in some of the countries where BHE has operations or is pursuing investment opportunities may present increased risks related to, among others, inflation, foreign currency exchange rate fluctuations, currency repatriation restrictions, nationalization, renegotiation, privatization, availability of financing on suitable terms, customer creditworthiness, construction delays, business interruption, political instability, civil unrest, guerilla activity, terrorism, pandemics (including potentially in relation to COVID-19), expropriation, trade sanctions, contract nullification and changes in law, regulations or tax policy. BHE may not choose to or be capable of either fully insuring against or effectively hedging these risks.

Poor performance of plan and fund investments and other factors impacting the pension and other postretirement benefit plans and nuclear decommissioning and mine reclamation trust funds could unfavorably impact each Registrant's cash flows, liquidity and financial results.

Costs of providing each Registrant's defined benefit pension and other postretirement benefit plans and costs associated with the joint trustee plan to which PacifiCorp contributes depend upon a number of factors, including the rates of return on plan assets,
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the level and nature of benefits provided, discount rates, mortality assumptions, the interest rates used to measure required minimum funding levels, the funded status of the plans, changes in benefit design, tax deductibility and funding limits, changes in laws and government regulation and each Registrant's required or voluntary contributions made to the plans. Furthermore, the timing of recognition of unrecognized gains and losses associated with the Registrants' defined benefit pension plans is subject to volatility due to events that may give rise to settlement accounting. Settlement events resulting from lump sum distributions offered by certain of the Registrants' defined benefit pension plans are influenced by the interest rates used to discount a participant's lump sum distribution. When the applicable interest rates are low, lump sum distributions in a given year tend to increase resulting in a higher likelihood of triggering settlement accounting.

Certain of the Registrant's pension and other postretirement benefit plans are in underfunded positions. Each Registrant may be required to make cash contributions to fund these plans in the future. Additionally, each Registrant's plans have investments in domestic and foreign equity and debt securities and other investments that are subject to loss. Losses from investments could add to the volatility, size and timing of future contributions.

Furthermore, the funded status of the UMWA 1974 Pension Plan multiemployer plan to which PacifiCorp's subsidiary previously contributed is considered critical and declining. PacifiCorp's subsidiary involuntarily withdrew from the UMWA 1974 Pension Plan in June 2015 when the UMWA employees ceased performing work for the subsidiary. PacifiCorp has recorded its best estimate of the withdrawal obligation.

In addition, MidAmerican Energy is required to fund over time the projected costs of decommissioning Quad Cities Station, a nuclear power plant, and Bridger Coal Company, a joint venture of PacifiCorp's subsidiary, Pacific Minerals, Inc., is required to fund projected mine reclamation costs. The funds that MidAmerican Energy has invested in a nuclear decommissioning trust and a subsidiary of PacifiCorp has invested in a mine reclamation trust are invested in debt and equity securities and poor performance of these investments will reduce the amount of funds available for their intended purpose, which could require MidAmerican Energy or PacifiCorp's subsidiary to make additional cash contributions. As contributions to the trust are being made over the operating life of the respective facility, reductions in the expected operating life of the facility could also require MidAmerican Energy and PacifiCorp's subsidiary to make additional contributions to the related trust. Such cash funding obligations, which are also impacted by the other factors described above, could have a material impact on MidAmerican Energy's or PacifiCorp's liquidity by reducing their available cash.

Inflation and changes in commodity prices and fuel transportation costs may adversely affect each Registrant's financial results.

Inflation and increases in commodity prices and fuel transportation costs may affect each Registrant by increasing both operating and capital costs. As a result of existing rate agreements, contractual arrangements or competitive price pressures, each Registrant may not be able to pass the costs of inflation on to its customers. If each Registrant is unable to manage cost increases or pass them on to its customers, its financial results could be adversely affected.

Cyclical fluctuations and competition in the residential real estate brokerage and mortgage businesses could adversely affect HomeServices.

The residential real estate brokerage and mortgage industries tend to experience cycles of greater and lesser activity and profitability and are typically affected by changes in economic conditions, which are beyond HomeServices' control. Any of the following, among others, are examples of items that could have a material adverse effect on HomeServices' businesses by causing a general decline in the number of home sales, sale prices or the number of home financings which, in turn, would adversely affect its financial results:
rising interest rates or unemployment rates, including a sustained high unemployment rate in the United States;
periods of economic slowdown or recession in the markets served or the adverse effects on market actions as a result of the actual or potential spread of COVID-19;
decreasing home affordability;
lack of available mortgage credit for potential homebuyers, such as the reduced availability of credit, which may continue into future periods;
inadequate home inventory levels;
sources of new competition; and
changes in applicable tax law.
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Disruptions in the financial markets could affect each Registrant's ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on each Registrant.

Disruptions in the financial markets could affect each Registrant's ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on each Registrant. Significant dislocations and liquidity disruptions in the United States, Great Britain, Canada and global credit markets, such as those that occurred in 2008 and 2009, may materially impact liquidity in the bank and debt capital markets, making financing terms less attractive for borrowers that are able to find financing and, in other cases, may cause certain types of debt financing, or any financing, to be unavailable. Additionally, economic uncertainty in the United States or globally may adversely affect the United States' credit markets and could negatively impact each Registrant's ability to access funds on favorable terms or at all. If a Registrant is unable to access the bank and debt markets to meet liquidity and capital expenditure needs, it may adversely affect the timing and amount of its capital expenditures, acquisition financing and its financial results.

Potential changes in accounting standards may impact each Registrant's financial results and disclosures in the future, which may change the way analysts measure each Registrant's business or financial performance.

The Financial Accounting Standards Board ("FASB") and the SEC continuously make changes to accounting standards and disclosure and other financial reporting requirements. New or revised accounting standards and requirements issued by the FASB or the SEC or new accounting orders issued by the FERC could significantly impact each Registrant's financial results and disclosures. For example, beginning in 2018 all changes in the fair values of equity securities (whether realized or unrealized) are recognized as gains or losses in the relevant Registrant's financial statements. Accordingly, periodic changes in such Registrant's reported net income will likely be subject to significant variability.

Each Registrant is involved in a variety of legal proceedings, the outcomes of which are uncertain and could adversely affect its financial results.

Each Registrant is, and in the future may become, a party to a variety of legal proceedings. Litigation is subject to many uncertainties, and the Registrants cannot predict the outcome of individual matters with certainty. It is possible that the final resolution of some of the matters in which each Registrant is involved could result in additional material payments substantially in excess of established liabilities or in terms that could require each Registrant to change business practices and procedures or divest ownership of assets. Further, litigation could result in the imposition of financial penalties or injunctions and adverse regulatory consequences, any of which could limit each Registrant's ability to take certain desired actions or the denial of needed permits, licenses or regulatory authority to conduct its business, including the siting or permitting of facilities. Any of these outcomes could have a material adverse effect on such Registrant's financial results.

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Item 1B.Unresolved Staff Comments

Not applicable.

Item 2.Properties

Each Registrant's energy properties consist of the physical assets necessary to support its electricity and natural gas businesses. Properties of the relevant Registrant's electricity businesses include electric generation, transmission and distribution facilities, as well as coal mining assets that support certain of PacifiCorp's electric generating facilities. Properties of the relevant Registrant's natural gas businesses include natural gas distribution facilities, interstate pipelines, storage facilities, liquefied natural gas facilities, compressor stations and meter stations. The transmission and distribution assets are primarily within each Registrant's service territories. In addition to these physical assets, the Registrants have rights-of-way, mineral rights and water rights that enable each Registrant to utilize its facilities. It is the opinion of each Registrant's management that the principal depreciable properties owned by it are in good operating condition and are well maintained. Pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties, MidAmerican Energy's electric utility properties in the state of Iowa, Nevada Power's and Sierra Pacific's properties in the state of Nevada, AltaLink's transmission properties and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of generation projects are pledged or encumbered to support or otherwise provide the security for the related subsidiary debt. For additional information regarding each Registrant's energy properties, refer to Item 1 of this Form 10-K and Notes 4, 5 and 22 of the Notes to Consolidated Financial Statements of Berkshire Hathaway Energy in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Financial Statements of MidAmerican Energy in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of Nevada Power in Item 8 of this Form 10-K, Notes 3 and 4 of the Notes to Consolidated Financial Statements of Sierra Pacific in Item 8 of this Form 10-K and Notes 4 and 5 of the Notes to Consolidated Financial Statements of Eastern Energy Gas in Item 8 of this Form 10-K.

The following table summarizes Berkshire Hathaway Energy's operating electric generating facilities as of December 31, 2020:
Facility NetNet Owned
EnergyCapacityCapacity
SourceEntityLocation by Significance(MWs)(MWs)
Natural gasPacifiCorp, MidAmerican Energy, NV Energy and BHE RenewablesNevada, Utah, Iowa, Illinois, Washington, Wyoming, Oregon, Texas, New York and Arizona11,17110,892
WindPacifiCorp, MidAmerican Energy and BHE RenewablesIowa, Wyoming, Texas, Nebraska, Washington, California, Illinois, Oregon, Kansas and Montana10,30210,302
CoalPacifiCorp, MidAmerican Energy and NV EnergyWyoming, Iowa, Utah, Nevada, Colorado and Montana13,2498,198
SolarBHE Renewables and NV EnergyCalifornia, Texas, Arizona, Minnesota and Nevada1,6991,551
HydroelectricPacifiCorp, MidAmerican Energy and BHE RenewablesWashington, Oregon, The Philippines, Idaho, California, Utah, Hawaii, Montana, Illinois and Wyoming1,2991,277
NuclearMidAmerican EnergyIllinois1,815454
GeothermalPacifiCorp and BHE RenewablesCalifornia and Utah377377
Total39,91233,051

Additionally, as of December 31, 2020 the Company has electric generating facilities that are under construction in Iowa, Wyoming and Montana having total Facility Net Capacity and Net Owned Capacity of 603 MWs.

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The right to construct and operate each Registrant's electric transmission and distribution facilities and interstate natural gas pipelines across certain property was obtained in most circumstances through negotiations and, where necessary, through prescription, eminent domain or similar rights. PacifiCorp, MidAmerican Energy, Nevada Power, Sierra Pacific, BHE GT&S, Northern Natural Gas and Kern River in the United States; Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc in Great Britain; and AltaLink in Alberta, Canada continue to have the power of eminent domain or similar rights in each of the jurisdictions in which they operate their respective facilities, but the United States and Canadian utilities do not have the power of eminent domain with respect to governmental, Native American or Canadian First Nations' tribal lands. Although the main Kern River pipeline crosses the Moapa Indian Reservation, all facilities in the Moapa Indian Reservation are located within a utility corridor that is reserved to the United States Department of Interior, Bureau of Land Management.

With respect to real property, each of the electric transmission and distribution facilities and interstate natural gas pipelines fall into two basic categories: (1) parcels that are owned in fee, such as certain of the electric generating facilities, electric substations, natural gas compressor stations, natural gas meter stations and office sites; and (2) parcels where the interest derives from leases, easements (including prescriptive easements), rights-of-way, permits or licenses from landowners or governmental authorities permitting the use of such land for the construction, operation and maintenance of the electric transmission and distribution facilities and interstate natural gas pipelines. Each Registrant believes it has satisfactory title or interest to all of the real property making up their respective facilities in all material respects.

Item 3.Legal Proceedings

PacifiCorp

On September 30, 2020, a putative class action complaint against PacifiCorp was filed, captioned Jeanyne James et. al. vs. PacifiCorp, Case No. 20cv33885, Circuit Court, Multnomah County, Oregon. The complaint was filed on behalf of certain named Oregon residents and businesses and all Oregon citizens and entities whose real or personal property was harmed by wildfires in Oregon beginning on or after September 7, 2020. The complaint alleges that PacifiCorp's assets contributed to the Oregon wildfires occurring on or after September 7, 2020 and that PacifiCorp acted with gross negligence, among other things. The complaint was amended November 2, 2020 to seek the following damages: (i) damages for real and personal property and other economic losses in excess of $600 million; (ii) double the amount of property and economic damages based on alleged gross negligence; (iii) treble damages for specific costs associated with loss of timber, trees and shrubbery; (iv) double the damages for the costs of litigation and reforestation; and (v) prejudgment interest. The plaintiffs demand a trial by jury and have reserved their right to amend the complaint to allege claims for punitive damages. Other individual lawsuits alleging similar claims have been filed in Oregon related to the 2020 wildfires. Investigations as to the cause and origin of the wildfires are ongoing.

For more information regarding certain legal proceedings affecting PacifiCorp, refer to Note 14 of the Notes to Consolidated Financial Statements of PacifiCorp in Part II, Item 8 of this Form 10-K.

Item 4.Mine Safety Disclosures

Information regarding Berkshire Hathaway Energy's and PacifiCorp's mine safety violations and other legal matters disclosed in accordance with Section 1503(a) of the Dodd-Frank Reform Act is included in Exhibit 95 to this Form 10-K.

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PART II

Item 5.Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

BERKSHIRE HATHAWAY ENERGY

BHE's common stock is beneficially owned by Berkshire Hathaway, Mr. Walter Scott, Jr., a member of BHE's Board of Directors (along with his family members and related or affiliated entities) and Mr. Gregory E. Abel, BHE's Chairman, and has not been registered with the SEC pursuant to the Securities Act of 1933, as amended, listed on a stock exchange or otherwise publicly held or traded. BHE has not declared or paid any cash dividends to its common shareholders since Berkshire Hathaway acquired an equity ownership interest in BHE in March 2000 and does not presently anticipate that it will declare any dividends on its common stock in the foreseeable future.

PACIFICORP

All common stock of PacifiCorp is held by its parent company, PPW Holdings LLC, which is a direct, wholly owned subsidiary of BHE. PacifiCorp declared and paid dividends to PPW Holdings LLC of $— million in 2020 and $175 million in 2019.

MIDAMERICAN FUNDING AND MIDAMERICAN ENERGY

All common stock of MidAmerican Energy is held by its parent company, MHC, which is a direct, wholly owned subsidiary of MidAmerican Funding. MidAmerican Funding is an Iowa limited liability company whose membership interest is held solely by BHE. Neither MidAmerican Funding nor MidAmerican Energy declared or paid any cash distributions or dividends to its sole member or shareholder in 2020 and 2019.

NEVADA POWER

All common stock of Nevada Power is held by its parent company, NV Energy, which is an indirect, wholly owned subsidiary of BHE. Nevada Power declared and paid dividends to NV Energy of $155 million in 2020 and $371 million in 2019.

SIERRA PACIFIC

All common stock of Sierra Pacific is held by its parent company, NV Energy, which is an indirect, wholly owned subsidiary of BHE. Sierra Pacific declared and paid dividends to NV Energy of $20 million in 2020 and $46 million in 2019.

EASTERN ENERGY GAS

Eastern Energy Gas is a Virginia limited liability corporation whose membership interest is held solely by its parent company, BHE GT&S, which is an indirect, wholly owned subsidiary of BHE. Eastern Energy Gas did not declare or pay cash distributions to BHE GT&S in 2020. Eastern Energy Gas declared and paid cash distributions to DEI of $4.3 billion in 2020 and $457 million in 2019.
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Item 6.Selected Financial Data
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries

Item 7A.Quantitative and Qualitative Disclosures About Market Risk
Berkshire Hathaway Energy Company and its subsidiaries
PacifiCorp and its subsidiaries
MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Nevada Power Company and its subsidiaries
Sierra Pacific Power Company
Eastern Energy Gas Holdings, LLC and its subsidiaries

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Item 8.Financial Statements and Supplementary Data
Berkshire Hathaway Energy Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
PacifiCorp and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Shareholders' Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
MidAmerican Energy Company
Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations
Statements of Changes in Shareholder's Equity
Statements of Cash Flows
Notes to Financial Statements
MidAmerican Funding, LLC and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Member's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Nevada Power Company and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Shareholder's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Sierra Pacific Power Company
Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations
Statements of Changes in Shareholder's Equity
Statements of Cash Flows
Notes to Financial Statements
Eastern Energy Gas Holdings, LLC and its subsidiaries
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
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Berkshire Hathaway Energy Company and its subsidiaries
Consolidated Financial Section
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Item 6.Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of the Company during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with the Company's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. The Company's actual results in the future could differ significantly from the historical results.

The reportable segment financial information includes all necessary adjustments and eliminations needed to conform to the Company's significant accounting policies. The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, corporate functions and intersegment eliminations.

Results of Operations

Overview

Net income and operating revenue for the Company's reportable segments for the years ended December 31 are summarized as follows (in millions):

20202019Change20192018Change
Operating revenue:
PacifiCorp$5,341 $5,068 $273 %$5,068 $5,026 $42 %
MidAmerican Funding2,728 2,927 (199)(7)2,927 3,053 (126)(4)
NV Energy2,854 3,037 (183)(6)3,037 3,039 (2)— 
Northern Powergrid1,022 1,013 1,013 1,020 (7)(1)
BHE Pipeline Group1,578 1,131 447 40 1,131 1,203 (72)(6)
BHE Transmission659 707 (48)(7)707 710 (3)— 
BHE Renewables936 932 — 932 908 24 
HomeServices5,396 4,473 923 21 4,473 4,214 259 
BHE and Other438 556 (118)(21)556 614 (58)(9)
Total operating revenue$20,952 $19,844 $1,108 %$19,844 $19,787 $57 — %
Net income attributable to BHE shareholders:
PacifiCorp$741 $773 $(32)(4)%$773 $739 $34 %
MidAmerican Funding818 781 37 781 669 112 17 
NV Energy410 365 45 12 365 317 48 15 
Northern Powergrid201 256 (55)(21)256 239 17 
BHE Pipeline Group528 422 106 25 422 387 35 
BHE Transmission231 229 229 210 19 
BHE Renewables(1)
521 431 90 21 431 329 102 31 
HomeServices375 160 215 *160 145 15 10 
BHE and Other3,118 (467)3,585 *(467)(467)— — 
Total net income attributable to BHE shareholders$6,943 $2,950 $3,993 *$2,950 $2,568 $382 15 %

(1)Includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

*    Not meaningful.
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Net income attributable to BHE shareholders increased $3,993 million for 2020 compared to 2019. Included in these results was a pre-tax unrealized gain of $4,774 million ($3,470 million after-tax) compared to a pre-tax unrealized loss in 2019 of $313 million ($227 million after-tax) on the Company's investment in BYD Company Limited. Excluding the impact of this item, adjusted net income attributable to BHE shareholders in 2020 was $3,473 million, an increase of $296 million, or 9%, compared to adjusted net income attributable to BHE shareholders in 2019 of $3,177 million.

The increase in net income attributable to BHE shareholders for 2020 compared to 2019 was primarily due to:

$50 million higher net income at the Utilities with favorable performance at all four utilities (actual retail customer sales volumes increased 74 GWhs, or 0.1%), including $193 million of higher PTCs recognized, offset by a comparative increase in wildfire and other storm restoration costs, primarily at PacifiCorp;
$106 million higher net income at BHE Pipeline Group, primarily due to $73 million of incremental net income from the GT&S Transaction and a favorable rate case settlement at Northern Natural Gas;
$55 million lower net income at Northern Powergrid, mainly due to a deferred income tax charge in 2020 from a change in the United Kingdom corporate income tax rate;
$90 million higher net income at BHE Renewables, primarily due to increased income tax benefits from renewable wind tax equity investments, largely from projects reaching commercial operation, offset by lower earnings from geothermal and natural gas facilities;
$215 million higher net income at HomeServices, primarily due to higher earnings from mortgage services (71% increase in funded mortgage volume) and brokerage services (13% increase in closed transaction volume) largely attributable to the favorable interest rate environment; and
$3,585 higher net income at BHE and Other due to the $3,697 million change in the after-tax unrealized position of the Company's investment in BYD Company Limited offset by higher BHE corporate interest expense and unfavorable comparative consolidated state income tax benefits.
Net income attributable to BHE shareholders increased $382 million for 2019 compared to 2018. Included in these results were pre-tax unrealized losses on the Company's investment in BYD Company Limited ($313 million, $227 million after-tax, in 2019 and $526 million, $383 million after-tax, in 2018) and a $134 million income tax benefit in 2018 related to the accrued repatriation tax on undistributed foreign earnings as a result of 2017 Tax Reform. Excluding the impacts of these items, adjusted net income attributable to BHE shareholders in 2019 was $3,177 million, an increase of $360 million, or 13%, compared to adjusted net income attributable to BHE shareholders in 2018 of $2,817 million.

The increase in net income attributable to BHE shareholders for 2019 compared to 2018 was primarily due to:

$194 million higher net income at the Utilities with favorable performance at all four utilities (actual retail customer sales volumes increased 74 GWhs, or 0.1%), including $49 million of higher PTCs recognized;
$35 million higher net income at BHE Pipeline Group, primarily due to higher transportation revenue; and
$102 million higher net income at BHE Renewables, primarily due to improved earnings from renewable wind projects, including increased income tax benefits from renewable wind tax equity investments largely from projects reaching commercial operation, and higher earnings from geothermal and natural gas facilities.
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Reportable Segment Results

PacifiCorp

Operating revenue increased $273 million for 2020 compared to 2019 due to higher retail revenue of $250 million and higher wholesale and other revenue of $23 million. Retail revenue increased primarily due to $234 million from the amortization of certain existing regulatory balances to offset the accelerated depreciation of certain property, plant and equipment and the accelerated amortization of certain regulatory asset balances in relation to Utah and Oregon general rate case orders issued in December 2020. The increase in retail revenue was also due to price impacts of $49 million from changes in sales mix, partially offset by lower customer volumes of $34 million. The increase in wholesale and other revenue was mainly due to $34 million from the amortization of certain existing regulatory balances in Oregon to offset the accelerated depreciation of certain retired wind equipment, partially offset by lower wholesale volumes. Retail customer volumes decreased 1.4% primarily due to the impacts of COVID-19, which resulted in lower industrial and commercial customer usage and higher residential customer usage, partially offset by an increase in the average number of residential and commercial customers and the favorable impact of weather.

Net income decreased $32 million for 2020 compared to 2019, primarily due to an increase in operations and maintenance expense due to higher costs associated with wildfires and the Klamath Hydroelectric Settlement Agreement of $169 million, higher interest expense of $25 million from higher long-term debt balances, higher pension and other postretirement costs of $13 million, lower interest income from lower average interest rates and higher property taxes of $10 million, partially offset by lower tax expense from higher PTCs recognized of $62 million from repowered and new wind-powered generating facilities, higher utility margin of $47 million and higher allowances for equity and borrowed funds used during construction of $38 million. Utility margin increased primarily due to lower coal-fueled and natural gas-fueled generation costs, lower purchased power costs and price impacts from changes in sales mix, partially offset by lower net deferrals of incurred net power costs in accordance with established adjustment mechanisms and lower retail customer volumes.

Operating revenue increased $42 million for 2019 compared to 2018 due to higher retail revenue of $40 million and higher wholesale and other revenue of $2 million. Retail revenue increased primarily due to higher customer volumes of $31 million and higher average retail rates of $9 million. Retail customer volumes increased 0.4% primarily due to an increase in the average number of residential and commercial customers and the favorable impact of weather, partially offset by lower customer usage. Wholesale and other revenue increased primarily due to higher wholesale average market prices, largely offset by lower wholesale volumes.

Net income increased $34 million for 2019 compared to 2018, primarily due to higher allowances for equity and borrowed funds used during construction of $55 million, lower pension and post retirement expense of $11 million and higher utility margin of $4 million, partially offset by higher depreciation and amortization expense of $25 million from additional plant placed in-service, lower PTCs of $21 million from expirations, higher interest expense of $17 million and higher operations and maintenance expense of $10 million, primarily due to costs associated with the early retirement of a coal-fueled generation unit totaling $24 million offset by a decrease in wildfire suppression costs of $9 million. Utility margin increased primarily due to lower coal-fueled generation costs, higher wholesale average market prices, higher retail revenue primarily due to favorable customer volumes and higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms, partially offset by lower wholesale volumes, higher purchased electricity costs, higher natural gas-fueled generation costs and lower net wheeling revenue.


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MidAmerican Funding

Operating revenue decreased $199 million for 2020 compared to 2019, primarily due to lower natural gas operating revenue of $77 million, lower electric operating revenue of $70 million, lower electric and natural gas energy efficiency program revenue of $38 million (offset in operations and maintenance expense) and lower other revenue of $14 million, primarily from nonregulated utility construction services. Natural gas operating revenue decreased primarily due to lower volumes and a lower average per-unit cost of natural gas sold resulting in lower purchased gas adjustment recoveries of $68 million (offset in cost of sales) and a 10.2% decrease in retail customer volumes, primarily due to the unfavorable impact of weather. Electric operating revenue decreased due to lower wholesale and other revenue of $88 million, partially offset by higher retail revenue of $18 million. Electric wholesale and other revenue decreased mainly due to lower average wholesale per-unit prices of $115 million, partially offset by higher wholesale volumes of $28 million. Electric retail revenue increased primarily due to higher customer usage of $38 million, partially offset by price impacts of $18 million from changes in sales mix. Electric retail customer volumes increased 1.2% due to increased usage for certain industrial customers, partially offset by the impacts of COVID-19, which resulted in lower commercial and industrial customer usage and higher residential customer usage.

Net income increased $37 million for 2020 compared to 2019, primarily due to higher income tax benefit of $197 million from higher PTCs recognized of $132 million and the favorable impacts of ratemaking, partially offset by higher depreciation and amortization expense of $77 million due to additional assets placed in-service (offset by $23 million of lower Iowa revenue sharing accruals), lower allowances for equity and borrowed funds used during construction of $45 million, higher interest expense of $20 million and lower electric and natural gas utility margins. PTCs recognized increased due to higher wind-powered generation driven primarily by repowering and new wind projects placed in-service. Electric utility margin decreased due to lower wholesale revenue and the price impacts from changes in sales mix, partially offset by lower generation costs from higher wind generation and higher retail customer volumes. Natural gas utility margin decreased primarily due to lower retail customer volumes primarily due to the unfavorable impact of weather.

Operating revenue decreased $126 million for 2019 compared to 2018, primarily due to lower electric and natural gas energy efficiency program revenue of $76 million (offset in operations and maintenance expense) and lower natural gas operating revenue of $66 million, partially offset by higher other operating revenue of $13 million, primarily from nonregulated utility construction services, and higher electric operating revenue of $3 million. Electric operating revenue increased due to higher retail revenue of $77 million, partially offset by lower wholesale and other revenue of $74 million. Electric retail revenue increased due to higher customer usage of $76 million and higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax expense), primarily the energy adjustment clause, partially offset by lower average rates of $54 million due to sales mix and $19 million from the unfavorable impact of weather. Electric retail customer volumes increased 1.4% as an increase in industrial volumes of 4.0% was largely offset by lower residential volumes from the unfavorable impact of weather and lower customer usage. Electric wholesale and other revenue decreased due to 10.6% lower sales volumes and $35 million from lower average per-unit prices. Natural gas operating revenue decreased from lower recoveries through the purchased gas adjustment clause due to a lower average per-unit cost of natural gas sold totaling $69 million (offset in cost of sales), partially offset by an increase in retail sales volumes of 2.0% from the favorable impact of weather in 2019.

Net income increased $112 million for 2019 compared to 2018, primarily due to higher income tax benefit of $115 million, largely due to higher PTCs of $70 million and the favorable impacts of ratemaking, higher electric utility margin, higher allowances for equity and borrowed funds of $32 million and higher investment earnings, partially offset by higher interest expense of $55 million and higher depreciation and amortization expense of $30 million due to additional assets placed in-service offset by $46 million of lower Iowa revenue sharing accruals. Electric utility margin increased due to lower generation costs from higher wind generation, higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax expense) and higher retail customer volumes.


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NV Energy

Operating revenue decreased $183 million for 2020 compared to 2019, primarily due to lower electric operating revenue. Electric operating revenue decreased primarily due to lower fully-bundled energy rates (offset in cost of sales) of $164 million and a $120 million one-time bill credit given to customers in the fourth quarter of 2020 resulting from a regulatory rate review decision (offset in operations and maintenance and income tax expenses), partially offset by higher retail customer volumes, price impacts from changes in sales mix and a favorable regulatory decision. Electric retail customer volumes, including distribution only service customers, increased 1.5%, primarily due to the favorable impact of weather, largely offset by the impacts of COVID-19, which resulted in lower industrial, distribution only service and commercial customer usage and higher residential customer usage.

Net income increased $45 million for 2020 compared to 2019, primarily due to higher electric utility margin of $100 million, lower pension and post-retirement costs of $9 million and lower income tax expense mainly from the favorable impacts of ratemaking, partially offset by an increase in operations and maintenance expense, mainly from higher earnings sharing accruals at the Nevada Utilities, and higher depreciation and amortization expense of $20 million, mainly from higher plant placed in-service. Electric utility margin increased primarily due to higher retail customer volumes, price impacts from changes in sales mix and a favorable regulatory decision.

Operating revenue decreased $2 million for 2019 compared to 2018, primarily due to lower electric operating revenue of $17 million, partially offset by higher natural gas operating revenue of $15 million. Electric operating revenue decreased due to lower retail revenue of $32 million, partially offset by higher wholesale and other revenue of $15 million. Electric retail revenue decreased primarily due to lower retail customer volumes of $50 million and a decrease from a tax rate reduction rider effective April 2018 of $17 million, partially offset by higher fully-bundled energy rates (offset in cost of sales) of $31 million and an increase in the average number of customers of $9 million. Electric retail customer volumes decreased 1.4% primarily due to the impacts of weather, net of increased distribution only service customer volumes. Natural gas operating revenue increased due to a higher average per-unit price (offset in cost of sales) of $13 million and higher volumes from the impacts of weather.

Net income increased $48 million for 2019 compared to 2018, primarily due to lower operations and maintenance expense, largely due to lower political activity expenses and lower earnings sharing accruals of $23 million at Nevada Power, partially offset by lower electric utility margin of $58 million and higher depreciation and amortization expense. Electric utility margin decreased due to lower retail customer volumes and lower average retail rates from a tax rate reduction rider, partially offset by an increase in the average number of customers and higher wholesale and transmission revenue.

Northern Powergrid

Operating revenue increased $9 million for 2020 compared to 2019, primarily due to higher distribution revenue of $10 million from increased tariff rates of $40 million, partially offset by 5.4% lower units distributed of $30 million largely due to the impacts of COVID-19. Net income decreased $55 million for 2020 compared to 2019, primarily due to write-offs of gas exploration costs of $44 million, higher income tax expense of $37 million and higher distribution-related operating and depreciation expenses of $18 million, partially offset by the higher distribution revenue, lower overall pension expense of $22 million, including lower pension settlement losses recognized in 2020 compared to 2019, and lower interest expense of $9 million. The increase in income tax expense is due to a change in the United Kingdom corporate income tax rate that resulted in a deferred income tax charge of $35 million.

Operating revenue decreased $7 million for 2019 compared to 2018, primarily due to the stronger United States dollar of $45 million and lower distributed units of $21 million, partially offset by higher distribution tariff rates of $39 million and higher smart meter revenue of $15 million due to a larger number of units installed. Net income increased $17 million for 2019 compared to 2018, primarily due to lower overall pension expense of $23 million, largely resulting from lower pension settlement losses recognized in 2019 compared to 2018, and the higher distribution revenues, partially offset by higher distribution-related operating and depreciation expenses of $13 million and the stronger United States dollar of $10 million.


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BHE Pipeline Group

Operating revenue increased $447 million for 2020 compared to 2019 due to $331 million of incremental revenue from the GT&S Transaction, a favorable rate case settlement at Northern Natural Gas of $101 million and higher transportation revenue of $43 million, partially offset by lower gas sales at Northern Natural Gas of $23 million related to system balancing activities (largely offset in cost of sales). Net income increased $106 million for 2020 compared to 2019, primarily due to $73 million of incremental net income from the GT&S Transaction, the higher transportation revenue, and a favorable after-tax, rate case settlement at Northern Natural Gas of $32 million, partially offset by higher property and other tax expense of $17 million, including a non-recurring property tax refund in 2019, higher depreciation and amortization expense of $13 million due to increased spending on capital projects and lower interest income of $9 million.

Operating revenue decreased $72 million for 2019 compared to 2018 due to lower gas sales of $89 million at Northern Natural Gas related to system balancing activities (largely offset in cost of sales), partially offset by higher transportation revenue of $19 million. Transportation revenue increased from generally higher volumes and rates, partially offset by the impact of period two rates of $26 million (largely offset in depreciation and amortization expense) and $11 million from refunds related to 2017 Tax Reform at Kern River. Net income increased $35 million for 2019 compared to 2018, primarily due to the higher transportation revenue, excluding the impact of period two rates, lower property and other tax expense of $9 million due to a non-recurring property tax refund in 2019 and favorable margin of $9 million on system balancing activities, partially offset by higher depreciation and amortization expense, net of the impact of lower depreciation rates at Kern River, due to increased spending on capital projects.

BHE Transmission

Operating revenue decreased $48 million for 2020 compared to 2019, primarily due to a regulatory decision received in November 2020 at AltaLink and the stronger United States dollar of $7 million. Net income increased $2 million for 2020 compared to 2019, primarily due to lower non-regulated interest expense at BHE Canada and higher net income at BHE U.S. Transmission of $6 million mainly due to improved equity earnings from ETT, partially offset by the impacts of regulatory decisions received in 2020 and 2019 at AltaLink.

Operating revenue decreased $3 million for 2019 compared to 2018, mainly due to the stronger United States dollar of $17 million, largely offset by favorable regulatory decisions received in 2019 at AltaLink. Net income increased $19 million for 2019 compared to 2018, primarily due to favorable regulatory decisions received in 2019 and the unfavorable impacts of a regulatory rate order received in 2018 at AltaLink and higher equity earnings at ETT, partially offset by the stronger United States dollar impact of $5 million.

BHE Renewables

Operating revenue increased $4 million for 2020 compared to 2019, primarily due to higher natural gas, solar and hydro revenues of $21 million due to favorable generation, partially offset by an unfavorable change in the valuation of a power purchase agreement of $14 million and lower geothermal revenues of $4 million from lower pricing. Net income increased $90 million for 2020 compared to 2019, primarily due to favorable wind tax equity investment earnings of $129 million, partially offset by lower geothermal earnings of $22 million, due to higher operations and maintenance expense and lower pricing, and lower natural gas earnings of $17 million, due to lower margins. Wind tax equity investment earnings improved due to $147 million of earnings from projects reaching commercial operation, partially offset by lower commitment fee income of $15 million and lower earnings from existing tax equity investments of $6 million.


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Operating revenue increased $24 million for 2019 compared to 2018, primarily due to higher wind revenues of $32 million and higher natural gas and geothermal revenues of $32 million due to higher generation and pricing from market opportunities, partially offset by lower hydro revenues of $28 million due to lower rainfall and lower solar revenues of $11 million due to lower insolation. Wind revenues increased primarily due to $33 million from new projects and a favorable change in the valuation of a power purchase agreement of $11 million, partially offset by lower generation of $12 million at existing projects. Net income increased $102 million for 2019 compared to 2018, primarily due to higher wind earnings of $74 million and higher geothermal earnings of $53 million, largely due to higher generation and margins from market opportunities and lower operations and maintenance expense, partially offset by lower hydro earnings of $20 million, primarily due to lower rainfall and a declining financial asset balance, and lower solar earnings of $5 million primarily due to lower insolation. Wind earnings were favorable primarily due to improved tax equity investment earnings of $49 million, earnings from new projects of $35 million and a favorable change in the valuation of a power purchase agreement of $11 million, partially offset by lower revenues on existing projects of $12 million, primarily from lower generation, and $8 million of unfavorable changes in the valuation of interest rate swap derivatives. Tax equity investment earnings were favorable due to $57 million of earnings from projects reaching commercial operation and $7 million of higher commitment fee income, partially offset by $13 million of lower earnings from existing projects mainly due to lower generation caused by turbine blade repairs.

HomeServices

Operating revenue increased $923 million for 2020 compared to 2019, primarily due to higher brokerage revenue of $440 million from a 13% increase in closed transaction volume and higher mortgage revenue of $423 million from a 71% increase in funded mortgage volume due to an increase in refinance activity from the favorable interest rate environment. Net income increased $215 million for 2020 compared to 2019, primarily due to higher earnings at mortgage services of $138 million and higher earnings at brokerage services largely attributable to the favorable interest rate environment.

Operating revenue increased $259 million for 2019 compared to 2018, primarily due to an increase from acquired businesses of $221 million and higher mortgage revenue at existing businesses of $103 million from a 32% increase in funded mortgage volume due to an increase in refinance activity, partially offset by lower brokerage revenue at existing businesses of $74 million mainly due to a 1% decrease in closed transaction volume. Net income increased $15 million for 2019 compared to 2018, primarily due to higher earnings at existing mortgage businesses of $33 million due to an increase in refinance activity and net income from acquired businesses of $9 million, partially offset by $36 million of lower earnings at existing brokerage businesses primarily from lower closed volume and margins.

BHE and Other

Operating revenue decreased $118 million for 2020 compared to 2019, primarily due to lower electricity and natural gas volumes at MidAmerican Energy Services, LLC. Net income increased $3,585 million for 2020 compared to 2019, primarily due to the change in the after-tax unrealized position of the Company's investment in BYD Company Limited of $3,697 million, partially offset by higher BHE corporate interest expense and unfavorable comparative consolidated state income tax benefits.

Operating revenue decreased $58 million for 2019 compared to 2018, primarily due to lower electricity and natural gas volumes at MidAmerican Energy Services, LLC. Net loss remained the same for 2019 compared to 2018 as the change in the after-tax unrealized position of the Company's investment in BYD Company Limited of $156 million was offset by a $134 million income tax benefit recognized in 2018 related to the accrued repatriation tax on undistributed foreign earnings as a result of 2017 Tax Reform, higher BHE corporate interest expense and lower net income of $14 million at MidAmerican Energy Services, LLC driven by unrealized mark-to-market losses on contracts.

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Liquidity and Capital Resources

Each of BHE's direct and indirect subsidiaries is organized as a legal entity separate and apart from BHE and its other subsidiaries. It should not be assumed that the assets of any subsidiary will be available to satisfy BHE's obligations or the obligations of its other subsidiaries. However, unrestricted cash or other assets that are available for distribution may, subject to applicable law, regulatory commitments and the terms of financing and ring-fencing arrangements for such parties, be advanced, loaned, paid as dividends or otherwise distributed or contributed to BHE or affiliates thereof. The Company's long-term debt may include provisions that allow BHE or its subsidiaries to redeem such debt in whole or in part at any time. These provisions generally include make-whole premiums. Refer to Note 18 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding the limitation of distributions from BHE's subsidiaries.

As of December 31, 2020, the Company's total net liquidity was as follows (in millions):
MidAmericanNVNorthernBHE
 BHEPacifiCorpFundingEnergyPowergridCanadaOtherTotal
 
Cash and cash equivalents$623 $13 $39 $64 $78 $87 $386 $1,290 
   
Credit facilities(1)
3,500 1,200 1,509 650 228 923 3,020 11,030 
Less: 
Short-term debt— (93)— (45)(23)(225)(1,900)(2,286)
Tax-exempt bond support and letters of credit— (218)(370)— — (2)—��(590)
Net credit facilities3,500 889 1,139 605 205 696 1,120 8,154 
Total net liquidity$4,123 $902 $1,178 $669 $283 $783 $1,506 $9,444 
Credit facilities:      
Maturity dates202220222021, 2022202220232021, 20242021, 2022 

(1)    Includes the drawn uncommitted credit facilities totaling $23 million at Northern Powergrid.

Refer to Note 9 of the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding the Company's credit facilities, letters of credit, equity commitments and other related items.

Operating Activities

Net cash flows from operating activities for the years ended December 31, 2020 and 2019 were $6,224 million and $6,206 million, respectively. The increase was primarily due to an increase in income tax receipts and improved operating results, partially offset by changes in working capital.

Net cash flows from operating activities for the years ended December 31, 2019 and 2018 were $6.2 billion and $6.8 billion, respectively. The decrease was primarily due to changes in working capital, partially offset by an increase in income tax receipts.

The timing of the Company's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2020 and 2019 were $(13.2) billion and $(9.0) billion, respectively. The change was primarily due to higher cash paid for acquisitions and higher funding of tax equity investments, partially offset by lower capital expenditures of $599 million. Refer to "Future Uses of Cash" for further discussion of capital expenditures.
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Net cash flows from investing activities for the years ended December 31, 2019 and 2018 were $(9.0) billion and $(7.0) billion, respectively. The change was primarily due to higher capital expenditures of $1.1 billion and higher funding of tax equity investments. Refer to "Future Uses of Cash" for further discussion of capital expenditures.

Natural Gas Transmission and Storage Business Acquisition

On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of DEI and Dominion Questar, exclusive of the Questar Pipeline Group (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, after post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments.

On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in the first half of 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration of approximately $1.3 billion to Dominion Questar on November 2, 2020.

Financing Activities

Net cash flows from financing activities for the year ended December 31, 2020 were $7.1 billion. Sources of cash totaled $11.7 billion and consisted of proceeds from BHE senior debt issuances of $5.2 billion, proceeds from preferred stock issuances of $3.8 billion and proceeds from subsidiary debt issuances totaling $2.7 billion. Uses of cash totaled $4.5 billion and consisted mainly of $2.8 billion for repayments of subsidiary debt, net repayments of short term debt of $939 million and $350 million for repayments of BHE senior debt.

Net cash flows from financing activities for the year ended December 31, 2019 were $3.1 billion. Sources of cash totaled $5.4 billion and consisted of proceeds from subsidiary debt issuances totaling $4.7 billion and net proceeds from short-term debt of $684 million. Uses of cash totaled $2.3 billion and consisted mainly of $1.9 billion for repayments of subsidiary debt and repurchases of common stock of $293 million.

Net cash flows from financing activities for the year ended December 31, 2018 were $(174) million. Sources of cash totaled $5.6 billion and consisted of proceeds from BHE senior debt issuances of $3.2 billion and proceeds from subsidiary debt issuances totaling $2.4 billion. Uses of cash totaled $5.8 billion and consisted mainly of $2.4 billion for repayments of subsidiary debt, net repayments of short term debt of $1.9 billion, $1.0 billion for repayments of BHE senior debt and the purchase of redeemable noncontrolling interest of $131 million.

Debt Repurchases

The Company may from time to time seek to acquire its outstanding debt securities through cash purchases in the open market, privately negotiated transactions or otherwise. Any debt securities repurchased by the Company may be reissued or resold by the Company from time to time and will depend on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors. The amounts involved may be material.

Preferred Stock Issuance

On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration.

Common Stock Transactions

For the years ended December 31, 2020, 2019 and 2018, BHE repurchased 180,358 shares of its common stock for $126 million, 447,712 shares of its common stock for $293 million and 177,381 shares of its common stock for $107 million, respectively.
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Future Uses of Cash

The Company has available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, the issuance of equity and other sources. These sources are expected to provide funds required for current operations, capital expenditures, acquisitions, investments, debt retirements and other capital requirements. The availability and terms under which BHE and each subsidiary has access to external financing depends on a variety of factors, including regulatory approvals, its credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry and project finance markets, among other items.

Capital Expenditures

The Company has significant future capital requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Expenditures for certain assets may ultimately include acquisitions of existing assets.

The Company's historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, by reportable segment for the years ended December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
PacifiCorp$1,257 $2,175 $2,540 $1,717 $1,911 $2,550 
MidAmerican Funding2,332 2,810 1,836 2,101 1,924 2,036 
NV Energy503 657 675 742 1,001 980 
Northern Powergrid566 602 682 715 584 567 
BHE Pipeline Group427 687 659 1,011 949 939 
BHE Transmission270 247 372 279 294 237 
BHE Renewables817 122 95 96 91 84 
HomeServices47 54 36 46 40 38 
BHE and Other(1)
22 10 (130)79 59 53 
Total$6,241 $7,364 $6,765 $6,786 $6,853 $7,484 
(1)BHE and Other includes intersegment eliminations.

HistoricalForecast
201820192020202120222023
Wind generation$2,775 $2,828 $2,125 $1,115 $780 $1,101 
Electric distribution1,385 1,537 1,719 1,726 1,540 1,510 
Electric transmission608 1,070 958 993 1,665 1,734 
Natural gas transmission and storage451717640872832865
Solar generation305161504401,037 
Other992 1,207 1,307 1,930 1,596 1,237 
Total$6,241 $7,364 $6,765 $6,786 $6,853 $7,484 

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The Company's historical and forecast capital expenditures consisted mainly of the following:
Wind generation expenditures include the following:
Construction of wind-powered generating facilities at MidAmerican Energy totaling $848 million for 2020, $1,486 million for 2019 and $1,261 million for 2018. MidAmerican Energy placed in-service 729 MWs (nominal ratings) during 2020, including the acquisition of an existing 80-MW wind farm, 1,019 MWs (nominal ratings) during 2019 and 817 MWs (nominal ratings) during 2018. Wind XI, a 2,000-MW project, was completed in January 2020. Wind XII, a 592-MW project, was placed in-service in 2019 and 2020. MidAmerican Energy had three other wind-powered generation projects under construction in 2020 that totaled 319 MWs, including facilities placed in-service in 2020 and the remainder expected to be placed in-service in early 2021. MidAmerican Energy expects all of these wind-powered generating facilities to qualify for 100% of PTCs available. PTCs from these projects are excluded from MidAmerican Energy's Iowa energy adjustment clause until these generation assets are reflected in base rates.
MidAmerican Energy is currently planning to construct 483 MWs of additional wind-powered generating facilities, for which the related projects are at varying stages of development. Planned spending for those projects totals $461 million for 2021, $16 million for 2022 and $421 million for 2023.
Repowering certain existing wind-powered generating facilities at MidAmerican Energy totaling $37 million for 2020, $369 million for 2019 and $422 million for 2018. The repowering projects entail the replacement of significant components of older turbines. Planned spending for the repowered generating facilities totals $409 million in 2021 and $673 million in 2022. Of the 1,079 MWs of current repowering projects not in-service as of December 31, 2020, 80 MWs are currently expected to qualify for 100% of the federal PTCs available for ten years following each facility's return to service, 592 MWs are expected to qualify for 80% of such credits and 407 MWs are expected to qualify for 60% of such credits.
Construction of wind-powered generating facilities at PacifiCorp totaling $1,148 million for 2020, $338 million for 2019 and $9 million for 2018 and includes 674 MWs of new wind-powered generating facilities that were placed in-service in 2020 and 516 MWs expected to be placed in-service in 2021. Planned spending for the new wind-powered generating facilities totals $43 million in 2021 and $533 million in 2023. The energy production from the new wind-powered generating facilities is expected to qualify for 100% of the federal PTCs available for ten years once the equipment is placed in-service.
Repowering certain existing wind-powered generating facilities at PacifiCorp totaling $125 million for 2020, $585 million for 2019 and $332 million for 2018. The repowering projects entail the replacement of significant components of older turbines. Certain repowering projects were placed in service in 2019 and 2020 and the remaining repowering projects are expected to be placed in-service in 2021. Planned spending for the repowered generating facilities totals $42 million in 2021, $19 million in 2022 and $64 million in 2023. The energy production from such repowered facilities is expected to qualify for 100% of the federal PTCs available for ten years following each facility's return to service.
Construction of wind-powered generating facilities at BHE Renewables totaling $15 million for 2019 and $717 million for 2018. BHE Renewables placed in-service 512 MWs during 2018.
Electric distribution includes both growth and operating expenditures. Growth expenditures include new customer connections and enhancements to existing customer connections. Operating expenditures include ongoing distribution systems infrastructure needed at the Utilities and Northern Powergrid, wildfire mitigation, damage restoration and storm damage repairs and investments in routine expenditures for distribution needed to serve existing and expected demand.
Electric transmission includes both growth and operating expenditures. Growth expenditures include PacifiCorp's costs for the 140-mile 500-kV Aeolus-Bridger/Anticline transmission line, which is a major segment of PacifiCorp's Energy Gateway Transmission expansion program placed in-service in November 2020, the Nevada Utilities' Greenlink Nevada transmission expansion program and AltaLink's directly assigned projects from the AESO. Operating expenditures include system reinforcement and investments in routine expenditures for transmission needed to serve existing and expected demand.
Natural gas transmission and storage includes both growth and operating expenditures. Growth expenditures includes, among other items, the Northern Natural Gas New Lisbon Expansion and Twin Cities Area Expansion projects. Operating expenditures include, among other items, asset modernization and pipeline integrity projects.
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Solar generation includes growth expenditures, including MidAmerican Energy's current plan to construct 767 MWs of small- and utility-scale solar generation, for which the related projects are in varying stages of development. Nevada Power's solar generation investment includes expenditures for a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage, known as the Dry Lake generating facility. Commercial operation at Dry Lake is expected by the end of 2023.
Other capital expenditures includes both growth and operating expenditures, including routine expenditures for generation and other infrastructure needed to serve existing and expected demand, natural gas distribution, technology, and environmental spending relating to emissions control equipment and the management of CCR.

Contractual Obligations
The Company has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes the Company's material contractual cash obligations as of December 31, 2020 (in millions):
Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
BHE senior debt$450 $900 $1,650 $10,551 $13,551 
BHE junior subordinated debentures— — — 100 100 
Subsidiary debt1,389 4,148 3,585 26,986 36,108 
Interest payments on long-term debt(1)
2,063 3,919 3,511 23,094 32,587 
Short-term debt2,286 — — — 2,286 
Operating and finance lease liabilities167 249 156 509 1,081 
Interest payments on operating and finance lease liabilities(1)
67 106 80 365 618 
Fuel, capacity and transmission contract commitments(1)
2,122 2,866 2,332 12,985 20,305 
Construction commitments(1)
783 520 — 1,307 
Easements(1)
72 148 146 2,229 2,595 
Other(1)
472 749 492 1,464 3,177 
Total contractual cash obligations$9,871 $13,605 $11,952 $78,287 $113,715 

(1)Not reflected on the Consolidated Balance Sheets.

The Company has other types of commitments that arise primarily from unused lines of credit, letters of credit or relate to construction and other development costs (refer to Liquidity and Capital Resources included within this Item 7 and Note 9), uncertain tax positions (refer to Note 12) and AROs (refer to Note 14), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information.

Additionally, the Company has invested in projects sponsored by third parties, commonly referred to as tax equity investments. Under the terms of these tax equity investments, the Company has entered into equity capital contribution agreements with the project sponsors that require contributions. The Company has made contributions of $2,736 million, $1,619 million and $698 million in 2020, 2019 and 2018, respectively, and has commitments as of December 31, 2020, subject to satisfaction of certain specified conditions, to provide equity contributions of $563 million in 2021 pursuant to these equity capital contribution agreements as the various projects achieve commercial operation. Once a project achieves commercial operation, the Company enters into a partnership agreement with the project sponsor that directs and allocates the operating profits and tax benefits from the project.

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Regulatory Matters

The Company is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further information regarding the Company's general regulatory framework and current regulatory matters.

COVID-19

In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by the Company. While COVID-19 has impacted the Company's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. Most jurisdictions in which the Company operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity or natural gas may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by the Utilities and Northern Powergrid related to customer collection activity and suspension of disconnections for non-payment, the Utilities and Northern Powergrid have seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for the deferral or recovery of certain costs incurred in responding to COVID-19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion. Residential property transactions may also decline in the future at HomeServices due to the varying phases of state recovery plans and associated duration of restrictions on business openings, other measures and general economic uncertainty.

Several of the Company's businesses have been deemed essential and their employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain the electric generation, transmission and distribution systems and the natural gas transportation and distribution systems. In response to the effects of COVID-19, the Company has implemented various business continuity plans to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID-19.

Quad Cities Generating Station Operating Status

Exelon Generation Company, LLC ("Exelon Generation"), the operator of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station") of which MidAmerican Energy has a 25% ownership interest, announced on June 2, 2016, its intention to shut down Quad Cities Station on June 1, 2018. In December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Agency to purchase ZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the ZECs will provide Exelon Generation additional revenue through 2027 as an incentive for continued operation of Quad Cities Station. MidAmerican Energy will not receive additional revenue from the subsidy.

The PJM Interconnection, L.L.C. ("PJM") capacity market includes a Minimum Offer Price Rule ("MOPR"). If a generation resource is subjected to a MOPR, its offer price in the market is adjusted to effectively remove the revenues it receives through a government-provided financial support program, resulting in a higher offer that may not clear the capacity market. Prior to December 19, 2019, the PJM MOPR applied only to certain new gas-fired resources. An expanded PJM MOPR to include existing resources would require exclusion of ZEC compensation when bidding into future capacity auctions, resulting in an increased risk of Quad Cities Station not receiving capacity revenues in future auctions.

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On December 19, 2019, the FERC issued an order requiring the PJM to broadly apply the MOPR to all new and existing resources, including nuclear. This greatly expands the breadth and scope of the PJM's MOPR, which is effective as of the PJM's next capacity auction. While the FERC included some limited exemptions in its order, no exemptions were available to state-supported nuclear resources, such as Quad Cities Station. The FERC provided no new mechanism for accommodating state-supported resources other than the existing Fixed Resource Requirement ("FRR") mechanism under which an entire utility zone would be removed from PJM's capacity auction along with sufficient resources to support the load in such zone. In response to the FERC's order, the PJM submitted a compliance filing on March 18, 2020, wherein the PJM proposes tariff language reflecting the FERC's directives and a schedule for resuming capacity auctions. On April 16, 2020, the FERC issued an order largely denying requests for rehearing of the FERC's December 2019 order but granting a few clarifications that required an additional PJM compliance filing, which it submitted on June 1, 2020. On October 15, 2020, the FERC issued an order denying requests for rehearing of its April 16, 2020 order and accepting the PJM's two compliance filings, subject to a further compliance filing to revise minor aspects of the proposed MOPR methodology. As part of that order, the FERC also accepted the PJM's proposal to condense the schedule of activities leading up to the next capacity auction but did not specify when that schedule would commence given that a key element of the MOPR level computation remains pending before the FERC in another proceeding. In November 2020, the PJM announced that the next capacity auction will be conducted in May 2021.

On May 21, 2020, the FERC issued an order involving reforms to the PJM's day-ahead and real-time reserves markets that need to be reflected in the calculation of MOPR levels. In approving reforms to the PJM's reserves markets, the FERC also directed the PJM to develop a new methodology for estimating revenues that resources will receive for sales of energy and related services, which will then be used in calculating a number of parameters and assumptions used in the capacity market, including MOPR levels. The PJM submitted its new revenue projection methodology on August 5, 2020. On review of this compliance filing, the FERC is expected to address how these additional reforms will impact MOPR levels, the timeline for implementing the new revenue projection methodology, and the timing for commencing the capacity auction schedule.

Exelon Generation is currently working with PJM and other stakeholders to pursue the FRR option as an alternative to the next PJM capacity auction. If Illinois implements the FRR option, Quad Cities Station could be removed from PJM's capacity auction and instead supply capacity and be compensated under the FRR program. If Illinois cannot implement an FRR program in its PJM zones, then the MOPR will apply to Quad Cities Station, resulting in higher offers for its units that may not clear the capacity market. Implementing the FRR program in Illinois will require both legislative and regulatory changes. MidAmerican Energy cannot predict whether or when such legislative and regulatory changes can be implemented or their potential impact on the continued operation of Quad Cities Station.

Environmental Laws and Regulations

The Company is subject to federal, state, local and foreign laws and regulations regarding climate change, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. In addition to imposing continuing compliance obligations and capital expenditure requirements, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. The Company believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion regarding environmental laws and regulations.

Collateral and Contingent Features

Debt of BHE and debt and preferred securities of certain of its subsidiaries are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of the rated company's ability to, in general, meet the obligations of its issued debt or preferred securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.

BHE and its subsidiaries have no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. The Company's unsecured revolving credit facilities do not require the maintenance of a minimum credit rating level in order to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.

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In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2020, the applicable entities' credit ratings from the recognized credit rating agencies were investment grade. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2020, the Company would have been required to post $307 million of additional collateral. The Company's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors.

Inflation

Historically, overall inflation and changing prices in the economies where BHE's subsidiaries operate have not had a significant impact on the Company's consolidated financial results. In the United States and Canada, the Regulated Businesses operate under cost-of-service based rate structures administered by various state and provincial commissions and the FERC. Under these rate structures, the Regulated Businesses are allowed to include prudent costs in their rates, including the impact of inflation. The price control formula used by the Northern Powergrid Distribution Companies incorporates the rate of inflation in determining rates charged to customers. BHE's subsidiaries attempt to minimize the potential impact of inflation on their operations through the use of fuel, energy and other cost adjustment clauses and bill riders, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.

Off-Balance Sheet Arrangements

The Company has certain investments that are accounted for under the equity method in accordance with GAAP. Accordingly, an amount is recorded on the Company's Consolidated Balance Sheets as an equity investment and is increased or decreased for the Company's pro-rata share of earnings or losses, respectively, less any dividends from such investments. Certain equity investments are presented on the Consolidated Balance Sheets net of investment tax credits.

As of December 31, 2020, the Company's investments that are accounted for under the equity method had short- and long-term debt of $2.7 billion, unused revolving credit facilities of $173 million and letters of credit outstanding of $88 million. As of December 31, 2020, the Company's pro-rata share of such short- and long-term debt was $1.3 billion, unused revolving credit facilities was $87 million and outstanding letters of credit was $43 million. The entire amount of the Company's pro-rata share of the outstanding short- and long-term debt and unused revolving credit facilities is non-recourse to the Company. The entire amount of the Company's pro-rata share of the outstanding letters of credit is recourse to the Company. Although the Company is generally not required to support debt service obligations of its equity investees, default with respect to this non-recourse short- and long-term debt could result in a loss of invested equity.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by the Company's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with the Company's Summary of Significant Accounting Policies included in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

The Regulated Businesses prepare their financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, the Regulated Businesses defer the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

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The Company continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit the Regulated Businesses' ability to recover their costs. The Company believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal, state and provincial levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as AOCI. Total regulatory assets were $3.4 billion and total regulatory liabilities were $7.5 billion as of December 31, 2020. Refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Regulated Businesses' regulatory assets and liabilities.

Impairment of Goodwill and Long-Lived Assets

The Company's Consolidated Balance Sheet as of December 31, 2020 includes goodwill of acquired businesses of $11.5 billion. The Company evaluates goodwill for impairment at least annually and completed its annual review as of October 31. Additionally, no indicators of impairment were identified as of December 31, 2020. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. The Company uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings or rate base; and an appropriate discount rate. Estimated future cash flows are impacted by, among other factors, growth rates, changes in regulations and rates, ability to renew contracts and estimates of future commodity prices. In estimating future cash flows, the Company incorporates current market information, as well as historical factors. Refer to Note 22 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's goodwill.

The Company evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.

The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what the Company would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, load growth, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect the Company's results of operations.

Pension and Other Postretirement Benefits

Certain of the Company's subsidiaries sponsor defined benefit pension and other postretirement benefit plans that cover the majority of employees. The Company recognizes the funded status of the defined benefit pension and other postretirement benefit plans on the Consolidated Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2020, the Company recognized a net liability totaling $138 million for the funded status of the defined benefit pension and other postretirement benefit plans. As of December 31, 2020, amounts not yet recognized as a component of net periodic benefit cost that were included in net regulatory assets totaled $604 million and in AOCI totaled $655 million.


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The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rates, expected long-term rate of return on plan assets and healthcare cost trend rates. These key assumptions are reviewed annually and modified as appropriate. The Company believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for disclosures about the defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2020.

The Company chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.

In establishing its assumption as to the expected long-term rate of return on plan assets, the Company utilizes the expected asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. The Company regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.

The Company chooses a healthcare cost trend rate that reflects the near and long-term expectations of increases in medical costs and corresponds to the expected benefit payment periods. The healthcare cost trend rate is assumed to gradually decline to 5.00% by 2025, at which point the rate of increase is assumed to remain constant. Refer to Note 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for healthcare cost trend rate sensitivity disclosures.

The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Consolidated Financial Statements would be as follows (dollars in millions):
Domestic Plans
Other PostretirementUnited Kingdom
Pension PlansBenefit PlansPension Plan
+0.5%-0.5%+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020
Benefit Obligations:
Discount rate$(164)$184 $(38)$41 $(187)$219 
Effect on 2020 Periodic Cost:
Discount rate$(2)$$$(1)$(20)$22 
Expected rate of return on plan assets(12)12 (4)(11)11 

A variety of factors affect the funded status of the plans, including asset returns, discount rates, mortality assumptions, plan changes and the Company's funding policy for each plan.

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Income Taxes

In determining the Company's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the Company's various regulatory commissions. The Company's income tax returns are subject to continuous examinations by federal, state, local and foreign income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of the Company's federal, state, local and foreign income tax examinations is uncertain, the Company believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on the Company's consolidated financial results. Refer to Note 12 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding the Company's income taxes.

It is probable the Company's regulated businesses will pass income tax benefits and expense related to the federal tax rate change from 35% to 21% as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to their customers. As of December 31, 2020, these amounts were recognized as a net regulatory liability of $3.3 billion and will be included in regulated rates when the temporary differences reverse.

The Company has not established deferred income taxes on its undistributed foreign earnings that have been determined by management to be reinvested indefinitely; however, the Company periodically evaluates its capital requirements. If circumstances change in the future and a portion of the Company's undistributed foreign earnings were repatriated, the dividends may be subject to taxation in the United States but the tax is not expected to be material.

Revenue Recognition - Unbilled Revenue

Revenue recognized is equal to what the Company has the right to invoice as it corresponds directly with the value to the customer of the Company's performance to date and includes billed and unbilled amounts. The determination of customer invoices is based on a systematic reading of meters, fixed reservation charges based on contractual quantities and rates or, in the case of the Great Britain distribution businesses, when information is received from the national settlement system. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $750 million as of December 31, 2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Unbilled revenue is reversed in the following month and billed revenue is recorded based on the subsequent meter readings.

Item 7A.Quantitative and Qualitative Disclosures About Market Risk

The Company's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. The Company's significant market risks are primarily associated with commodity prices, interest rates, equity prices, foreign currency exchange rates and the extension of credit to counterparties with which the Company transacts. The following discussion addresses the significant market risks associated with the Company's business activities. Each of the Company's business platforms has established guidelines for credit risk management.


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Commodity Price Risk

The Company is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk primarily through BHE's ownership of the Utilities as they have an obligation to serve retail customer load in their regulated service territories. The Company also provides nonregulated retail electricity and natural gas services in competitive markets. The Utilities' load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage and transmission and transportation constraints. The Company does not engage in a material amount of proprietary trading activities. To manage a portion of its commodity price risk, the Company uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. The Company does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. The Company's exposure to commodity price risk is generally limited by its ability to include commodity costs in regulated rates, which is subject to regulatory lag that occurs between the time the costs are incurred and when the costs are included in regulated rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.

The table that follows summarizes the Company's price risk on commodity contracts accounted for as derivatives, excluding collateral netting of $35 million and $79 million, respectively, as of December 31, 2020 and 2019, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices with the contracted or expected volumes. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).
Fair Value -Estimated Fair Value after
Net AssetHypothetical Change in Price
(Liability)10% increase10% decrease
As of December 31, 2020:
Not designated as hedging contracts$103 $143 $63 
Designated as hedging contracts(4)10 (18)
Total commodity derivative contracts$99 $153 $45 
As of December 31, 2019:
Not designated as hedging contracts$16 $57 $(24)
Designated as hedging contracts(21)(1)(41)
Total commodity derivative contracts$(5)$56 $(65)

The settled cost of certain of the Company's commodity derivative contracts not designated as hedging contracts is included in regulated rates and, therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose the Company to earnings volatility. Consolidated financial results would be negatively impacted if the costs of wholesale electricity, wholesale natural gas or fuel are higher than what is included in regulated rates, including the impacts of adjustment mechanisms. As of December 31, 2020 and 2019, a net regulatory liability of $14 million and regulatory asset of $77 million, respectively, was recorded related to the net derivative asset of $103 million and $16 million, respectively. The difference between the net regulatory asset and the net derivative asset relates primarily to a power purchase agreement derivative at BHE Renewables. For the Company's commodity derivative contracts designated as hedging contracts, net unrealized gains and losses associated with interim price movements on commodity derivative contracts, to the extent the hedge is considered effective, generally do not expose the Company to earnings volatility.

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Interest Rate Risk

The Company is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt, future debt issuances and mortgage commitments. The Company manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, the Company's fixed-rate long-term debt does not expose the Company to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if the Company were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of the Company's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 9, 10, 11, and 15 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of the Company's short and long-term debt.

As of December 31, 2020 and 2019, the Company had short- and long-term variable-rate obligations totaling $4.4 billion and $4.8 billion, respectively, that expose the Company to the risk of increased interest expense in the event of increases in short-term interest rates. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on the Company's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 2020 and 2019.

The Company may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, forward sale commitments or mortgage interest rate lock commitments, to mitigate the Company's exposure to interest rate risk. Changes in fair value of agreements designated as cash flow hedges are reported in AOCI to the extent the hedge is effective until the forecasted transaction occurs. Changes in fair value of agreements not designated as hedging contracts are recognized in earnings. As of December 31, 2020 and 2019, the Company had variable-to-fixed interest rate swaps with notional amounts of $1,083 million and $380 million, respectively, and £121 million and £141 million, respectively, to protect the Company against an increase in interest rates. Additionally, as of December 31, 2020 and 2019, the Company had mortgage commitments, net, with notional amounts of $1,636 million and $913 million, respectively, to protect the Company against an increase in interest rates. The fair value of the Company's interest rate derivative contracts was a net derivative liability of $3 million as of December 31, 2020 and a net derivative liability of $5 million as of December 31, 2019. A hypothetical 20 basis point increase and a 20 basis point decrease in interest rates would not have a material impact on the Company.

Equity Price Risk

Market prices for equity securities are subject to fluctuation and consequently the amount realized in the subsequent sale of an investment may significantly differ from the reported market value. Fluctuation in the market price of a security may result from perceived changes in the underlying economic characteristics of the investee, the relative price of alternative investments and general market conditions.

As of December 31, 2020 and 2019, the Company's investment in BYD Company Limited common stock represented approximately 91% and 69%, respectively, of the total fair value of the Company's equity securities. The majority of the Company's remaining equity securities are held in a trust related to the decommissioning of nuclear generation assets and the realized and unrealized gains and losses are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates. The following table summarizes the Company's investment in BYD Company Limited as of December 31, 2020 and 2019 and the effects of a hypothetical 30% increase and a 30% decrease in market price as of those dates. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).
EstimatedHypothetical
HypotheticalFair Value afterPercentage Increase
FairPriceHypothetical(Decrease) in BHE
ValueChangeChange in PricesShareholders' Equity
As of December 31, 2020$5,897 30% increase$7,666 %
30% decrease4,128 (2)
As of December 31, 2019$1,122 30% increase$1,459 %
30% decrease785 (1)
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Foreign Currency Exchange Rate Risk

BHE's business operations and investments outside of the United States increase its risk related to fluctuations in foreign currency exchange rates primarily in relation to the British pound and the Canadian dollar. BHE's reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from BHE's foreign operations changes with the fluctuations of the currency in which they transact.

Northern Powergrid's functional currency is the British pound. As of December 31, 2020, a 10% devaluation in the British pound to the United States dollar would result in the Company's Consolidated Balance Sheet being negatively impacted by a $487 million cumulative translation adjustment in AOCI. A 10% devaluation in the average currency exchange rate would have resulted in lower reported earnings for Northern Powergrid of $20 million in 2020.

BHE Canada's functional currency is the Canadian dollar. As of December 31, 2020, a 10% devaluation in the Canadian dollar to the United States dollar would result in the Company's Consolidated Balance Sheet being negatively impacted by a $361 million cumulative translation adjustment in AOCI. A 10% devaluation in the average currency exchange rate would have resulted in lower reported earnings for BHE Canada of $17 million in 2020.

As of December 31, 2020, the Company had foreign currency exchange rate swaps with €250 million in aggregate notional amounts to mitigate its Euro denominated debt foreign currency exchange rate risk. A hypothetical 10% decrease in market interest rates would not have resulted in a material decrease in fair value of the foreign currency exchange rate swaps as of December 31, 2020.

Credit Risk

Domestic Regulated Operations

The Utilities are exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent the Utilities' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, the Utilities analyze the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, the Utilities enter into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, the Utilities exercise rights under these arrangements, including calling on the counterparty's credit support arrangement.

As of December 31, 2020, PacifiCorp's aggregate credit exposure with wholesale energy supply and marketing counterparties included counterparties having non-investment grade, internally rated credit ratings. Substantially all of these non-investment grade, internally rated counterparties are associated with long-duration solar and wind power purchase agreements from facilities that have not yet achieved commercial operation and for which PacifiCorp has no obligation should the facilities not achieve commercial operation.

Substantially all of MidAmerican Energy's electric wholesale sales revenue results from participation in RTOs, including the MISO and the PJM. MidAmerican Energy's share of historical losses from defaults by other RTO market participants has not been material. Additionally, as of December 31, 2020, MidAmerican Energy's aggregate direct credit exposure from electric wholesale marketing counterparties was not material.

As of December 31, 2020, NV Energy's aggregate credit exposure from energy related transactions, based on settlement and mark-to-market exposures, net of collateral, was not material.

BHE GT&S primary customers include electric and natural gas distribution utilities and LNG export, import and storage customers. Northern Natural Gas' primary customers include utilities in the upper Midwest. Kern River's primary customers are electric and natural gas distribution utilities, major oil and natural gas companies or affiliates of such companies, electric generating companies, energy marketing and trading companies and financial institutions. As a general policy, collateral is not required for receivables from creditworthy customers. Customers' financial condition and creditworthiness, as defined by the tariff, are regularly evaluated and historical losses have been minimal. In order to provide protection against credit risk, and as permitted by the separate terms of each of BHE GT&S, Northern Natural Gas' and Kern River's tariffs, the companies have required customers that lack creditworthiness to provide cash deposits, letters of credit or other security until they meet the creditworthiness requirements of the respective tariff.
124


Northern Powergrid

The Northern Powergrid Distribution Companies charge fees for the use of their distribution systems to supply companies. The supply companies purchase electricity from generators and traders, sell the electricity to end-use customers and use the Northern Powergrid Distribution Companies' distribution networks pursuant to the multilateral "Distribution Connection and Use of System Agreement." The Northern Powergrid Distribution Companies' customers are concentrated in a small number of electricity supply businesses. During 2020, RWE Npower PLC and certain of its affiliates and British Gas Trading Limited represented approximately 15% and 12%, respectively, of the total combined distribution revenue of the Northern Powergrid Distribution Companies. The industry operates in accordance with a framework which sets credit limits for each supply business based on its credit rating or payment history and requires them to provide credit cover if their value at risk (measured as being equivalent to 45 days usage) exceeds the credit limit. Acceptable credit typically is provided in the form of a parent company guarantee, letter of credit or an escrow account. Ofgem has indicated that, provided the Northern Powergrid Distribution Companies have implemented credit control, billing and collection in line with best practice guidelines and can demonstrate compliance with the guidelines or are able to satisfactorily explain departure from the guidelines, any bad debt losses arising from supplier default will be recovered through an increase in future allowed income. Losses incurred to date have not been material.

BHE Canada

AltaLink's primary source of operating revenue is the AESO, an entity rated AA- by Standard and Poor's. Because of the dependence on a single customer, any material failure of the customer to fulfill its obligations would significantly impair AltaLink's ability to meet its existing and future obligations. Total operating revenue for AltaLink was $653 million for the year ended December 31, 2020.

BHE Renewables

BHE Renewables owns independent power projects in the United States and the Philippines that generally have separate project financing agreements. These projects source of operating revenue is derived primarily from long-term power purchase agreements with single customers, primarily utilities, which expire between 2019 and 2043. Because of the dependence generally from a single customer at each project, any material failure of the customer to fulfill its obligations would significantly impair that project's ability to meet its existing and future obligations. Total operating revenue for BHE Renewables was $936 million for the year ended December 31, 2020.

Other Energy Business

MES is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with financial institutions and other market participants. Credit risk may be concentrated to the extent that MES' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, MES analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, MES enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, MES exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

As of December 31, 2020, MES' aggregate credit exposure from energy related transactions, based on settlement and mark-to-market exposures, net of collateral, was not material.

125


Item 8.Financial Statements and Supplementary Data

126


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Board of Directors and the Shareholders of
Berkshire Hathaway Energy Company
Des Moines, Iowa

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Berkshire Hathaway Energy Company and subsidiaries (the "Company") as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2020, the related notes and the schedules listed in the Index at Item 15(a)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

Change in Accounting Principle

In 2019, the Company has changed its method of accounting for leases due to adoption of ASU 2016-02 "Leases".

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing a separate opinion on the critical audit matters or on the accounts or disclosures to which they relate.


127


Regulatory Matters - Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 7 to the financial statements

Critical Audit Matter Description

The Company, through its regulated businesses, is subject to rate regulation by the Federal Energy Regulatory Commission as well as certain other regulatory commissions (collectively the "Commissions"), which have jurisdiction with respect to the rates of the Company's regulated businesses in the respective service territories where the Company operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense and income tax expense (benefit).

Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow the Company an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While the Company has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit the Company's ability to recover their costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated the Company's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected the Company's filings with the Commissions and the filings with the Commissions by intervenors that may impact the Company's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.
128


Goodwill — NV Energy and Northern Powergrid Reporting Units — Refer to Notes 2 and 22 to the financial statements

Critical Audit Matter Description

The Company's evaluation of goodwill for impairment involves the comparison of the estimated fair value of the reporting unit to the carrying value. The Company used a variety of methods to estimate the reporting unit's fair value, principally discounted projected future net cash flows. The cash flow model requires management to make significant estimates and assumptions related to forecasts of future cash flows, discount rates, and multiples of earnings or rate base. Changes in these assumptions could have a significant impact on either the fair value, the amount of any goodwill impairment charge, or both. The Company's goodwill balance was $11,506 million as of December 31, 2020, of which $2,369 million was allocated to the NV Energy reporting unit ("NV Energy") and $1,000 million was allocated to the Northern Powergrid reporting unit ("Northern Powergrid"). The fair value of NV Energy and Northern Powergrid exceeded their carrying value as of the measurement date and, therefore, no impairment was recognized.

Given the significant judgments made by management to estimate the fair value of the NV Energy and Northern Powergrid reporting units and the difference between their fair value and carrying value, performing audit procedures to evaluate the reasonableness of management's estimates and assumptions related to selection of the forecasts of future cash flows, discount rate, and multiples of earnings or rate base, required a high degree of auditor judgment and an increased extent of effort, including the need to involve our fair value specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the forecasts of future cash flows, discount rate, and multiples of earnings or rate base used by management to estimate the fair value of the NV Energy and Northern Powergrid reporting units included the following, among others:
We evaluated management's ability to accurately forecast future cash flows by comparing actual results to management's historical forecasts.
We evaluated the reasonableness of management's future cash flow forecasts by comparing the forecasts to historical cash flows.
We evaluated the impact of changes in management's forecasts from the October 31, 2020, annual measurement date to December 31, 2020.
With the assistance of our fair value specialists, we evaluated the reasonableness of the valuation methodology, the discount rate, and the multiples of earnings or rate base by:
Testing the source information underlying the determination of the discount rate and the mathematical accuracy of the calculation.
Developing a range of independent estimates and comparing those to the discount rate and multiples of earnings or rate base selected by management.

California and Oregon 2020 Wildfires – Contingencies – See Note 16 to the financial statements

Critical Audit Matter Description

The Company has loss contingencies related to the California and Oregon 2020 wildfires (the "2020 wildfires"). The Company has recorded estimated liabilities, net of expected insurance recoveries, of $136 million as of December 31, 2020, which represents its best estimate of probable losses, net of expected insurance recoveries, as a result of the 2020 wildfires.

We identified wildfire-related contingencies and the related disclosure as a critical audit matter because of the significant judgments made by management to estimate the losses. This required the application of a high degree of judgment and extensive effort when performing audit procedures to evaluate the reasonableness of management's estimate of the losses and disclosure related to wildfire-related loss contingencies.

129


How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's judgments regarding its estimate of losses for wildfire-related contingencies and the related disclosure included the following, among others:
We evaluated management's judgments related to whether a loss was probable and reasonably estimable, reasonably possible, or remote for each individual wildfire by inquiring of management and the Company's external and internal legal counsel regarding the amounts of probable and reasonably estimable, reasonably possible, and remote losses, including the potential impact of information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire, and external information for any evidence that might contradict management's assertions.
We evaluated the estimation methodology for determining the amount of probable loss through inquiries with management and its external and internal legal counsel.
We tested the significant assumptions used in determining the estimate, including, but not limited to, information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire.
We read legal letters from the Company's external and internal legal counsel regarding information regarding ongoing litigation related to the 2020 wildfires and evaluated whether the information therein was consistent with the information obtained in our procedures.
We evaluated whether the Company's disclosures were appropriate and consistent with the information obtained in our procedures.

/s/    Deloitte & Touche LLP

Des Moines, Iowa
February 26, 2021

We have served as the Company's auditor since 1991.


130


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$1,290 $1,040 
Restricted cash and cash equivalents140 212 
Trade receivables, net2,107 1,910 
Inventories1,168 873 
Mortgage loans held for sale2,001 1,039 
Other current assets2,741 839 
Total current assets9,447 5,913 
  
Property, plant and equipment, net86,128 73,305 
Goodwill11,506 9,722 
Regulatory assets3,157 2,766 
Investments and restricted cash and cash equivalents and investments14,320 6,255 
Other assets2,758 2,090 
  
Total assets$127,316 $100,051 

The accompanying notes are an integral part of these consolidated financial statements.
131


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)
As of December 31,
20202019
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable$1,867 $1,839 
Accrued interest555 493 
Accrued property, income and other taxes582 537 
Accrued employee expenses383 285 
Short-term debt2,286 3,214 
Current portion of long-term debt1,839 2,539 
Other current liabilities1,626 1,350 
Total current liabilities9,138 10,257 
  
BHE senior debt12,997 8,231 
BHE junior subordinated debentures100 100 
Subsidiary debt34,930 28,483 
Regulatory liabilities7,221 7,100 
Deferred income taxes11,775 9,653 
Other long-term liabilities4,178 3,649 
Total liabilities80,339 67,473 
  
Commitments and contingencies (Note 16)00
  
Equity:  
BHE shareholders' equity:  
Preferred stock - 100 shares authorized, $0.01 par value, 4 shares issued and outstanding3,750 
Common stock - 115 shares authorized, 0 par value, 76 and 77 shares issued and outstanding
Additional paid-in capital6,377 6,389 
Long-term income tax receivable(658)(530)
Retained earnings35,093 28,296 
Accumulated other comprehensive loss, net(1,552)(1,706)
Total BHE shareholders' equity43,010 32,449 
Noncontrolling interests3,967 129 
Total equity46,977 32,578 
  
Total liabilities and equity$127,316 $100,051 

The accompanying notes are an integral part of these consolidated financial statements.
132


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)
Years Ended December 31,
202020192018
Operating revenue:
Energy$15,556 $15,371 $15,573 
Real estate5,396 4,473 4,214 
Total operating revenue20,952 19,844 19,787 
 
Operating expenses: 
Energy: 
Cost of sales4,187 4,586 4,769 
Operations and maintenance3,545 3,318 3,440 
Depreciation and amortization3,410 2,965 2,933 
Property and other taxes634 574 573 
Real estate4,885 4,251 4,000 
Total operating expenses16,661 15,694 15,715 
  
Operating income4,291 4,150 4,072 
 
Other income (expense): 
Interest expense(2,021)(1,912)(1,838)
Capitalized interest80 77 61 
Allowance for equity funds165 173 104 
Interest and dividend income71 117 113 
Gains (losses) on marketable securities, net4,797 (288)(538)
Other, net88 97 (9)
Total other income (expense)3,180 (1,736)(2,107)
  
Income before income tax expense (benefit) and equity (loss) income7,471 2,414 1,965 
Income tax expense (benefit)308 (598)(583)
Equity (loss) income(149)(44)43 
Net income7,014 2,968 2,591 
Net income attributable to noncontrolling interests71 18 23 
Net income attributable to BHE shareholders6,943 2,950 2,568 
Preferred dividends26 
Earnings on common shares$6,917 $2,950 $2,568 

The accompanying notes are an integral part of these consolidated financial statements.

133


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)
Years Ended December 31,
202020192018
Net income$7,014 $2,968 $2,591 
 
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax of $(19), $(15) and $8(65)(59)25 
Foreign currency translation adjustment233 327 (494)
Unrealized (losses) gains on cash flow hedges, net of tax of $(3), $(8) and $1(15)(29)
Total other comprehensive income (loss), net of tax153 239 (462)
    
Comprehensive income7,167 3,207 2,129 
Comprehensive income attributable to noncontrolling interests71 18 23 
Comprehensive income attributable to BHE shareholders$7,096 $3,189 $2,106 

The accompanying notes are an integral part of these consolidated financial statements.

134


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)
BHE Shareholders' Equity
Long-termAccumulated
AdditionalIncomeOther
PreferredCommonPaid-inTaxRetainedComprehensiveNoncontrollingTotal
StockStockCapitalReceivableEarningsLoss, NetInterestsEquity
Balance, December 31, 2017$$$6,368 $— $22,206 $(398)$132 $28,308 
Adoption of ASU 2016-01— — — — 1,085 (1,085)— — 
Net income— — 2,568 20 2,588 
Other comprehensive loss— — (462)(462)
Reclassification of long-term income tax receivable— — — (609)— — — (609)
Long-term income tax receivable adjustments— — 152 (135)— — 17 
Common stock purchases— (6)(101)(107)
Distributions— (23)(23)
Other equity transactions— 11 
Balance, December 31, 20186,371 (457)25,624 (1,945)130 29,723 
Net income— — 2,950 18 2,968 
Other comprehensive income— — 239 239 
Long-term income tax
receivable adjustments
— — 33 (73)— — (40)
Common stock purchases— (15)(278)(293)
Distributions— (22)(22)
Other equity transactions— 
Balance, December 31, 20196,389 (530)28,296 (1,706)129 32,578 
Net income— — 6,943 70 7,013 
Other comprehensive income— — 153 153 
Long-term income tax
receivable adjustments
— — (128)— — (128)
Issuance of preferred stock3,750 — — — — — — 3,750 
Preferred stock dividend— — — — (26)— — (26)
Common stock purchases(6)(120)(126)
Distributions— (121)(121)
Purchase of noncontrolling interest— — (5)��� — — (28)(33)
BHE GT&S acquisition - noncontrolling interest— — — — — — 3,916 3,916 
Other equity transactions— (1)
Balance, December 31, 2020$3,750 $$6,377 $(658)$35,093 $(1,552)$3,967 $46,977 

The accompanying notes are an integral part of these consolidated financial statements.

135


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$7,014 $2,968 $2,591 
Adjustments to reconcile net income to net cash flows from operating activities:
(Gains) losses on marketable securities, net(4,797)288 538 
Losses on other items, net54 43 56 
Depreciation and amortization3,455 3,011 2,984 
Allowance for equity funds(165)(173)(104)
Equity loss, net of distributions248 93 45 
Changes in regulatory assets and liabilities(415)153 196 
Deferred income taxes and amortization of investment tax credits1,880 290 
Other, net(77)23 67 
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets(1,318)(372)72 
Derivative collateral, net43 (25)27 
Pension and other postretirement benefit plans(65)(51)(54)
Accrued property, income and other taxes, net(134)(16)199 
Accounts payable and other liabilities501 (26)145 
Net cash flows from operating activities6,224 6,206 6,770 
Cash flows from investing activities:
Capital expenditures(6,765)(7,364)(6,241)
Acquisitions, net of cash acquired(2,397)(27)(106)
Purchases of marketable securities(370)(262)(329)
Proceeds from sales of marketable securities325 238 287 
Equity method investments(2,724)(1,617)(683)
Other, net(1,234)69 83 
Net cash flows from investing activities(13,165)(8,963)(6,989)
Cash flows from financing activities:
Proceeds from BHE senior debt5,212 3,166 
Repayments of BHE senior debt(350)(1,045)
Proceeds from issuance of preferred stock3,750 
Common stock purchases(126)(293)(107)
Proceeds from subsidiary debt2,688 4,699 2,352 
Repayments of subsidiary debt(2,841)(1,914)(2,422)
Net (repayments of) proceeds from short-term debt(939)684 (1,946)
Purchase of noncontrolling interest(33)(131)
Other, net(258)(52)(41)
Net cash flows from financing activities7,103 3,124 (174)
Effect of exchange rate changes15 18 (7)
Net change in cash and cash equivalents and restricted cash and cash equivalents177 385 (400)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period1,268 883 1,283 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$1,445 $1,268 $883 

The accompanying notes are an integral part of these consolidated financial statements.
136


BERKSHIRE HATHAWAY ENERGY COMPANY AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)Organization and Operations

Berkshire Hathaway Energy Company ("BHE") is a holding company that owns a highly diversified portfolio of locally managed businesses principally engaged in the energy industry (collectively with its subsidiaries, the "Company") and is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").

The Company's operations are organized as 8 business segments: PacifiCorp and its subsidiaries ("PacifiCorp"), MidAmerican Funding, LLC and its subsidiaries ("MidAmerican Funding") (which primarily consists of MidAmerican Energy Company ("MidAmerican Energy")), NV Energy, Inc. and its subsidiaries ("NV Energy") (which primarily consists of Nevada Power Company and its subsidiaries ("Nevada Power") and Sierra Pacific Power Company ("Sierra Pacific")), Northern Powergrid Holdings Company ("Northern Powergrid") (which primarily consists of Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc), BHE Pipeline Group, LLC and its subsidiaries (which primarily consists of BHE GT&S, LLC ("BHE GT&S"), Northern Natural Gas Company ("Northern Natural Gas") and Kern River Gas Transmission Company ("Kern River")), BHE Transmission (which consists of BHE Canada Holdings Corporation ("BHE Canada") (which primarily consists of AltaLink, L.P. ("AltaLink")) and BHE U.S. Transmission, LLC), BHE Renewables (which primarily consists of BHE Renewables, LLC and CalEnergy Philippines) and HomeServices of America, Inc. and its subsidiaries ("HomeServices"). The Company, through these locally managed and operated businesses, owns 4 utility companies in the United States serving customers in 11 states, 2 electricity distribution companies in Great Britain, 5 interstate natural gas pipeline companies and interests in a liquefied natural gas ("LNG") export, import and storage facility in the United States, an electric transmission business in Canada, interests in electric transmission businesses in the United States, a renewable energy business primarily investing in wind, solar, geothermal and hydroelectric projects, the largest residential real estate brokerage firm in the United States and 1 of the largest residential real estate brokerage franchise networks in the United States.

(2)Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of BHE and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. The Consolidated Statements of Operations include the revenue and expenses of any acquired entities from the date of acquisition. The Company consolidates variable interest entities ("VIE") in which it possesses both (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE. Intercompany accounts and transactions have been eliminated.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; impairment of goodwill; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; fair value of assets acquired and liabilities assumed in business combinations; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

PacifiCorp, MidAmerican Energy, Nevada Power, Sierra Pacific, BHE GT&S, Northern Natural Gas, Kern River and AltaLink (the "Regulated Businesses") prepare their financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, the Regulated Businesses defer the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

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The Company continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit the Regulated Businesses' ability to recover their costs. The Company believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal, state and provincial levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").

Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Alternative valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Cash Equivalents and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. Restricted amounts are included in restricted cash and cash equivalents and investments and restricted cash and cash equivalents and investments on the Consolidated Balance Sheets.

Investments

    Fixed Maturity Securities

The Company's management determines the appropriate classification of investments in fixed maturity securities at the acquisition date and reevaluates the classification at each balance sheet date. Investments and restricted cash and cash equivalents and investments that management does not intend to use or is restricted from using in current operations are presented as noncurrent on the Consolidated Balance Sheets.

Available-for-sale investments are carried at fair value with realized gains and losses, as determined on a specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of tax. Realized and unrealized gains and losses on fixed maturity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates. Trading investments are carried at fair value with changes in fair value recognized in earnings. Held-to-maturity investments are carried at amortized cost, reflecting the ability and intent to hold the securities to maturity. The difference between the original cost and maturity value of a fixed maturity security is amortized to earnings using the interest method.

Investment gains and losses arise when investments are sold (as determined on a specific identification basis) or are other-than-temporarily impaired with respect to securities classified as available-for-sale. If the value of a fixed maturity investment declines to below amortized cost and the decline is deemed other than temporary, the amortized cost of the investment is reduced to fair value, with a corresponding charge to earnings. Any resulting impairment loss is recognized in earnings if the Company intends to sell, or expects to be required to sell, the debt security before its amortized cost is recovered. If the Company does not expect to ultimately recover the amortized cost basis even if it does not intend to sell the security, the credit loss component is recognized in earnings and any difference between fair value and the amortized cost basis, net of the credit loss, is reflected in other comprehensive income (loss) ("OCI"). For regulated fixed maturity investments, any impairment charge is offset by the establishment of a regulatory asset to the extent recovery in regulated rates is probable.

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    Equity Securities

Investments in equity securities are carried at fair value with changes in fair value recognized in earnings as a component of gains (losses) on marketable securities, net. Prior to January 1, 2018, substantially all of the Company's equity security investments were classified as available-for-sale with changes in fair value recognized in OCI, net of income taxes. All changes in fair value of equity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since the Company expects to recover costs for these activities through regulated rates.

    Equity Method Investments

The Company utilizes the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when the investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, the Company records the investment at cost and subsequently increases or decreases the carrying value of the investment by the Company's share of the net earnings or losses and OCI of the investee. The Company records dividends or other equity distributions as reductions in the carrying value of the investment. Certain equity investments are presented on the Consolidated Balance Sheets net of related investment tax credits.

Allowance for Credit Losses

Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for credit losses. The allowance for credit losses is based on the Company's assessment of the collectability of amounts owed to the Company by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, the Company primarily utilizes credit loss history. However, the Company may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. As of December 31, 2020 and 2019, the allowance for credit losses totaled $77 million and $44 million, respectively, and is included in trade receivables, net on the Consolidated Balance Sheets.

Derivatives

The Company employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price, interest rate, and foreign currency exchange rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements. Cash collateral received from or paid to counterparties to secure derivative contract assets or liabilities in excess of amounts offset is included in other current assets on the Consolidated Balance Sheets.

Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or cost of sales on the Consolidated Statements of Operations.

For the Company's derivatives not designated as hedging contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities. For the Company's derivatives not designated as hedging contracts and for which changes in fair value are not recorded as regulatory assets and liabilities, unrealized gains and losses are recognized on the Consolidated Statements of Operations as operating revenue for sales contracts; cost of sales and operating expense for purchase contracts and electricity, natural gas and fuel swap contracts; and other, net for interest rate swap derivatives.

For the Company's derivatives designated as hedging contracts, the Company formally assesses, at inception and thereafter, whether the hedging contract is highly effective in offsetting changes in the hedged item. The Company formally documents hedging activity by transaction type and risk management strategy.

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Changes in the estimated fair value of a derivative contract designated and qualified as a cash flow hedge, to the extent effective, are included on the Consolidated Statements of Changes in Equity as AOCI, net of tax, until the contract settles and the hedged item is recognized in earnings. The Company discontinues hedge accounting prospectively when it has determined that a derivative contract no longer qualifies as an effective hedge, or when it is no longer probable that the hedged forecasted transaction will occur. When hedge accounting is discontinued because the derivative contract no longer qualifies as an effective hedge, future changes in the estimated fair value of the derivative contract are charged to earnings. Gains and losses related to discontinued hedges that were previously recorded in AOCI will remain in AOCI until the contract settles and the hedged item is recognized in earnings, unless it becomes probable that the hedged forecasted transaction will not occur at which time associated deferred amounts in AOCI are immediately recognized in earnings.

Inventories

Inventories consist mainly of fuel, which includes coal stocks, stored gas and fuel oil, totaling $382 million and $257 million as of December 31, 2020 and 2019, respectively, and materials and supplies totaling $786 million and $616 million as of December 31, 2020 and 2019, respectively. The cost of materials and supplies, coal stocks and fuel oil is determined primarily using the average cost method. The cost of stored gas is determined using either the last-in-first-out ("LIFO") method or the lower of average cost or market. With respect to inventories carried at LIFO cost, the replacement cost would be $10 million higher and $2 million lower as of December 31, 2020 and 2019, respectively.

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. The Company capitalizes all construction-related materials, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include capitalized interest, including debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable to the Regulated Businesses. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. Additionally, MidAmerican Energy has regulatory arrangements in Iowa in which the carrying cost of certain utility plant has been reduced for amounts associated with electric returns on equity exceeding specified thresholds.
Depreciation and amortization are generally computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by the Company's various regulatory authorities. Depreciation studies are completed by the Regulated Businesses to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.

Generally when the Company retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.

Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, is capitalized by the Regulated Businesses as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC") and the Alberta Utilities Commission ("AUC"). After construction is completed, the Company is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.

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Asset Retirement Obligations

The Company recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. The Company's AROs are primarily related to the decommissioning of nuclear generating facilities and obligations associated with its other generating facilities and offshore natural gas pipelines. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. For the Regulated Businesses, the difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.

Impairment

The Company evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. The impacts of regulation are considered when evaluating the carrying value of regulated assets.

Leases

The Company has non-cancelable operating leases primarily for office space, office equipment, generating facilities, land and rail cars and finance leases consisting primarily of transmission assets, generating facilities and vehicles. These leases generally require the Company to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. The Company does not include options in its lease calculations unless there is a triggering event indicating the Company is reasonably certain to exercise the option. The Company's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Leases will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

The Company's leases of generating facilities generally are for the long-term purchase of electric energy, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

The Company's operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Goodwill

Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations. The Company evaluates goodwill for impairment at least annually and completed its annual review as of October 31. When evaluating goodwill for impairment, the Company estimates the fair value of its reporting units. If the carrying amount of a reporting unit, including goodwill, exceeds the estimated fair value, then the excess is charged to earnings as an impairment loss. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. The Company uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings or rate base; and an appropriate discount rate. In estimating future cash flows, the Company incorporates current market information, as well as historical factors. As such, the determination of fair value incorporates significant unobservable inputs. During 2020, 2019 and 2018, the Company did not record any material goodwill impairments.
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The Company records goodwill adjustments for (a) the tax benefit associated with the excess of tax-deductible goodwill over the reported amount of goodwill and (b) changes to the purchase price allocation prior to the end of the measurement period, which is not to exceed one year from the acquisition date.

Revenue Recognition

    Customer Revenue

The Company uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The Company records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations. In the event one of the parties to a contract has performed before the other, the Company would recognize a contract asset or contract liability depending on the relationship between the Company's performance and the customer's payment.

        Energy Products and Services

A majority of the Company's energy revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission, distribution and natural gas and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. The Company's energy revenue that is nonregulated primarily relates to the Company's renewable energy business.

Revenue recognized is equal to what the Company has the right to invoice as it corresponds directly with the value to the customer of the Company's performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $750 million and $638 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

        Real Estate Services

The Company's HomeServices reportable segment consists of separate brokerage, mortgage and franchise businesses. Rates charged for brokerage, mortgage and franchise real estate services are established through contractual arrangements that establish the transaction price and the allocation of the price amongst the separate performance obligations.

The full-service residential real estate brokerage business has performance obligations to deliver integrated real estate services including brokerage services, title and closing services, property and casualty insurance, home warranties, relocation services, and other home-related services to customers. All performance obligations related to the full-service residential real estate brokerage business are satisfied in less than one year at the point in time when a real estate transaction is closed or when services are provided. Commission revenue from real estate brokerage transactions and related amounts due to agents are recognized when a real estate transaction is closed. Title and escrow closing fee revenue from real estate transactions and related amounts due to the title insurer are recognized at closing. Payments for amounts billed are generally due from the customer at closing.

The franchise business operates a network that has performance obligations to provide the right to use certain brand names and other related service marks as well as to provide orientation programs, training and consultation services, advertising programs and other services to its franchisees. The performance obligations related to the franchise business are satisfied over time or when the services are provided. Franchise royalty fees are sales-based variable consideration and are based on a percentage of commissions earned by franchisees on real estate sales, which are recognized when the sale closes. Meetings and training revenue, referral fees, late fees, service fees and franchise termination fees are earned when services have been completed. Payments for amounts billed are generally due from the franchisee within 30 days of billing.


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    Other Revenue

Energy Products and Services

Other revenue consists primarily of revenue related to power purchase agreements not considered Customer Revenue as they are recognized in accordance with ASC 815, "Derivatives and Hedging" and ASC 842, "Leases" and certain non-tariff-based revenue approved by the regulator that is not considered Customer Revenue within ASC 606, "Revenue from Contracts with Customers."

        Real Estate Service

Mortgage and other revenue consists primarily of revenue related to the mortgage business. Mortgage fee revenue consists of amounts earned related to application and underwriting fees, and fees on canceled loans. Fees associated with the origination of mortgage loans are recognized as earned. These amounts are not considered Customer Revenue as they are recognized in accordance with ASC 815, "Derivatives and Hedging," ASC 825, "Financial Instruments" and ASC 860, "Transfers and Servicing."

Unamortized Debt Premiums, Discounts and Debt Issuance Costs

Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.

Foreign Currency

The accounts of foreign-based subsidiaries are measured in most instances using the local currency of the subsidiary as the functional currency. Revenue and expenses of these businesses are translated into United States dollars at the average exchange rate for the period. Assets and liabilities are translated at the exchange rate as of the end of the reporting period. Gains or losses from translating the financial statements of foreign-based operations are included in equity as a component of AOCI. Gains or losses arising from transactions denominated in a currency other than the functional currency of the entity that is party to the transaction are included in earnings.

Income Taxes

The Company's provision for income taxes has been computed on a stand-alone basis. Berkshire Hathaway includes the Company in its consolidated United States federal and Iowa state income tax returns and the majority of the Company's United States federal income tax is remitted to or received from Berkshire Hathaway. The Company records the deferred income tax assets associated with the state of Iowa net operating loss carryforward as a long-term income tax receivable from Berkshire Hathaway as a component of BHE's shareholders' equity due to the long-term related-party nature of the income tax receivable.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using enacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities associated with components of OCI are charged or credited directly to OCI. Changes in deferred income tax assets and liabilities associated with income tax benefits and expense for certain property-related basis differences and other various differences that the Company's regulated businesses deems probable to be passed on to their customers are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory commissions.

The Company has not established deferred income taxes on its undistributed foreign earnings that have been determined by management to be reinvested indefinitely; however, the Company periodically evaluates its capital requirements. If circumstances change in the future and a portion of the Company's undistributed foreign earnings were repatriated, the dividends may be subject to taxation in the United States but the tax is not expected to be material.

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In determining the Company's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the Company's various regulatory commissions. The Company's income tax returns are subject to continuous examinations by federal, state, local and foreign income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. The Company recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of the Company's federal, state, local and foreign income tax examinations is uncertain, the Company believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on the Company's consolidated financial results. The Company's unrecognized tax benefits are primarily included in accrued property, income and other taxes and other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

(3)    Business Acquisitions

BHE GT&S Acquisition

Transaction Description

On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy, Inc. ("DEI") and Dominion Energy Questar Corporation ("Dominion Questar"), exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "Questar Pipeline Group") (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, after post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments, for 100% of the equity interests of Eastern Gas Transmission and Storage, Inc. ("EGTS") (formerly known as Dominion Energy Transmission, Inc.) and Carolina Gas Transmission, LLC (formerly known as Dominion Energy Carolina Gas Transmission, LLC); 50% of the equity interests of Iroquois Gas Transmission System L.P. ("Iroquois"); and a 25% economic interest in Cove Point LNG, LP ("Cove Point") (formerly known as Dominion Energy Cove Point LNG, LP), consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE became the operator of Cove Point after the GT&S Transaction. The GT&S Transaction received clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR Approval") in October 2020, and approval by the Department of Energy with respect to a change in control of Cove Point and the Federal Communications Commission with respect to the transfer of certain licenses earlier in 2020.

On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in the first half of 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. DEI is also a party to the Q-Pipe Purchase Agreement, as guarantor for certain provisions regarding the Purchase Price Repayment Amount (as defined below) and other matters.

Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration of approximately $1.3 billion, which is included in other current assets on the Consolidated Balance Sheet as of December 31, 2020, to Dominion Questar on November 2, 2020. If the Q-Pipe Transaction does not close, Dominion Questar has agreed to repay all or (depending on the repayment date) substantially all of the Q-Pipe Cash Consideration (the "Purchase Price Repayment Amount") to BHE on or prior to December 31, 2021. If HSR Approval has not been obtained by June 30, 2021, upon BHE's written request, Dominion Questar will seek alternative buyers for all or a material portion of the Questar Pipeline Group (an "Alternative Transaction"). The Purchase Price Repayment Amount may be paid in cash or in shares of common stock, no par value, of DEI, or a combination thereof, subject to certain limitations as to stock repayments set forth in the Q-Pipe Purchase Agreement; provided any payment on or after December 15, 2021 must be paid in cash only.

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The assets acquired in the GT&S Transaction include (i) approximately 5,400 miles of operated natural gas transmission, gathering and storage pipelines with approximately 12.5 billion cubic feet ("Bcf") per day of design capacity; (ii) 420 Bcf of operated natural gas storage design capacity, of which 306 Bcf is owned by BHE GT&S; and (iii) a liquefied natural gas ("LNG") export, import and storage facility with LNG storage capacity of approximately 14.6 Bcfe.

On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration.

Included in BHE's Consolidated Statement of Operations within the BHE Pipeline Group reportable segment for the year ended December 31, 2020, is operating revenue and net income attributable to BHE shareholders of $331 million and $73 million, respectively, as a result of including BHE GT&S from November 1, 2020. Additionally, BHE incurred $9 million of direct transaction costs associated with the GT&S Transaction that are included in operating expense on the Consolidated Statement of Operations for the year ended December 31, 2020.

Preliminary Allocation of Purchase Price

BHE GT&S' assets acquired and liabilities assumed were measured at estimated fair value at closing. The majority of BHE GT&S' operations are subject to the rate-setting authority of the FERC and are accounted for pursuant to GAAP, including the authoritative guidance for regulated operations. The rate-setting and cost-recovery provisions provide for revenues derived from costs, including a return on investment of assets and liabilities included in rate base. As such, the fair value of BHE GT&S' assets acquired and liabilities assumed subject to these rate-setting provisions are assumed to approximate their carrying values and, therefore, no fair value adjustments have been reflected related to these amounts.

The fair value of BHE GT&S' assets acquired and liabilities assumed not subject to the rate-setting provisions discussed above was determined using an income and cost approach. The income approach is based on significant estimates and assumptions, including Level 3 inputs, which are judgmental in nature. The estimates and assumptions include the projected timing and amount of future cash flows, discount rates reflecting the risk inherent in the future cash flows and future market prices. Additionally, the fair value of long-term debt assumed was determined based on quoted market prices, which is considered a Level 2 fair value measurement.

The fair value of certain contracts and property, plant and equipment related to non-regulated operations, certain regulatory assets and other items included in rate base, an equity method investment and deferred income tax amounts are provisional and are subject to revision for up to 12 months following the acquisition date until the related valuations are completed. These items may be adjusted through regulatory assets or liabilities, to the extent recoverable in rates, or goodwill provided additional information is obtained about the facts and circumstances that existed as of the acquisition date. Such information includes, but is not limited to, the receipt of further information regarding the fair value of the contracts and property, plant and equipment related to non-regulated operations, the equity method investment and any associated deferred income tax amounts as well as the evolution of the rate-making process for regulated operations.


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The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed as of the acquisition date (in millions):
Fair Value
Current assets, including cash and cash equivalents of $104$569 
Property, plant and equipment9,254 
Goodwill1,732 
Regulatory assets108 
Deferred income taxes275 
Other long-term assets1,424 
Total assets13,362 
Current liabilities, including current portion of long-term debt of $1,2001,567 
Long-term debt, less current portion4,415 
Regulatory liabilities661 
Other long-term liabilities289 
Total liabilities6,932 
Noncontrolling interest3,916 
Net assets acquired$2,514 

Goodwill

The excess of the purchase price paid over the estimated fair values of the identifiable assets acquired and liabilities assumed totaled $1.7 billion and is reflected as goodwill in the BHE Pipeline Group reportable segment. The goodwill reflects the value paid primarily for the long-term opportunity to improve operating results through the efficient management of operating expenses and the deployment of capital. Goodwill is not amortized, but rather is reviewed annually for impairment or more frequently if indicators of impairment exist. For income tax purposes, the GT&S Acquisition is treated as a deemed asset acquisition resulting from tax elections being made, therefore all tax goodwill is deductible. Due to book and tax basis differences of certain items, book and tax goodwill will differ. The amount of tax goodwill is approximately $0.9 billion and will be amortized over 15 years.

Pro Forma Financial Information

The following unaudited pro forma financial information reflects the consolidated results of operations of BHE and the amortization of the purchase price adjustments assuming the acquisition had taken place on January 1, 2019, excluding non-recurring transaction costs incurred by BHE during 2020 (in millions):
20202019
Operating revenue$22,581 $21,979 
Net income attributable to BHE shareholders$6,800 $3,271 


146


(4)Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable
Life20202019
Regulated assets:
Utility generation, transmission and distribution systems5-80 years$86,730 $81,127 
Interstate natural gas pipeline assets3-80 years16,667 8,165 
103,397 89,292 
Accumulated depreciation and amortization(30,662)(26,353)
Regulated assets, net72,735 62,939 
Nonregulated assets:
Independent power plants5-30 years7,012 6,983 
Other assets3-40 years5,659 1,834 
12,671 8,817 
Accumulated depreciation and amortization(2,586)(2,183)
Nonregulated assets, net10,085 6,634 
Net operating assets82,820 69,573 
Construction work-in-progress3,308 3,732 
Property, plant and equipment, net$86,128 $73,305 

Construction work-in-progress includes $3.2 billion and $3.6 billion as of December 31, 2020 and 2019, respectively, related to the construction of regulated assets.

(5)Jointly Owned Utility Facilities

Under joint facility ownership agreements, the Domestic Regulated Businesses, as tenants in common, have undivided interests in jointly owned generation, transmission, distribution and pipeline common facilities. The Company accounts for its proportionate share of each facility and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include the Company's share of the expenses of these facilities.


147


The amounts shown in the table below represent the Company's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2020 (dollars in millions):
AccumulatedConstruction
CompanyFacility InDepreciation andWork-in-
ShareServiceAmortizationProgress
PacifiCorp:
Jim Bridger Nos. 1-467 %$1,485 $714 $15 
Hunter No. 194 486 203 
Hunter No. 260 305 127 
Wyodak80 476 254 
Colstrip Nos. 3 and 410 255 145 
Hermiston50 184 93 
Craig Nos. 1 and 219 368 305 
Hayden No. 125 75 42 
Hayden No. 213 44 25 
Transmission and distribution facilitiesVarious857 263 100 
Total PacifiCorp4,535 2,171 126 
MidAmerican Energy:
Louisa No. 188 %853 483 
Quad Cities Nos. 1 and 2(1)
25 731 437 10 
Walter Scott, Jr. No. 379 939 498 
Walter Scott, Jr. No. 4(2)
60 267 130 
George Neal No. 441 318 179 
Ottumwa No. 152 669 247 
George Neal No. 372 524 262 
Transmission facilitiesVarious261 101 
Total MidAmerican Energy4,562 2,337 32 
NV Energy:
Navajo11 %10 
Valmy50 390 291 
Transmission facilitiesVarious70 31 
On Line Transmission Line25 160 27 
Total NV Energy630 353 
BHE Pipeline Group:
Ellisburg Pool39 %28 10 
Ellisburg Station50 25 
Harrison50 53 16 
Leidy50 133 44 
Oakford50 200 64 
Common FacilitiesVarious277 165 
Total BHE Pipeline Group716 306 11 
Total$10,443 $5,167 $172 
(1)Includes amounts related to nuclear fuel.
(2)Facility in-service and accumulated depreciation and amortization amounts are net of credits applied under Iowa revenue sharing arrangements totaling $509 million and $112 million, respectively.

148


(6)    Leases

The following table summarizes the Company's leases recorded on the Consolidated Balance Sheet (in millions):
As of
December 31, 2020December 31, 2019
Right-of-use assets:
Operating leases$517 $525 
Finance leases501 504 
Total right-of-use assets$1,018 $1,029 
Lease liabilities:
Operating leases$569 $577 
Finance leases514 519 
Total lease liabilities$1,083 $1,096 

The following table summarizes the Company's lease costs (in millions):
Years Ended
December 31, 2020December 31, 2019
Variable$592 $623 
Operating151 170 
Finance:
Amortization18 16 
Interest40 41 
Short-term20 
Total lease costs$821 $857 
Weighted-average remaining lease term (years):
Operating leases7.47.6
Finance leases27.528.8
Weighted-average discount rate:
Operating leases4.5 %5.2 %
Finance leases8.5 %8.6 %

The following table summarizes the Company's supplemental cash flow information relating to leases (in millions):
Years Ended
December 31, 2020December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$(152)$(153)
Operating cash flows from finance leases(40)(42)
Financing cash flows from finance leases(24)(19)
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases$83 $82 
Finance leases19 14 

149


The Company has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$152 $81 $233 
2022125 74 199 
202393 63 156 
202466 63 129 
202550 62 112 
Thereafter199 673 872 
Total undiscounted lease payments685 1,016 1,701 
Less - amounts representing interest(116)(502)(618)
Lease liabilities$569 $514 $1,083 

(7)Regulatory Matters

Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future regulated rates. The Company's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Employee benefit plans(1)
15 years$722 $667 
Asset retirement obligations13 years640 445 
Asset disposition costsVarious347 391 
Deferred income taxes(2)
Various283 223 
Demand side management10 years197 
Deferred net power costs1 year139 110 
Deferred operating costs11 years124 134 
OtherVarious988 902 
Total regulatory assets$3,440 $2,881 
Reflected as:
Current assets$283 $115 
Noncurrent assets3,157 2,766 
Total regulatory assets$3,440 $2,881 
(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.
(2)Amounts primarily represent income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

The Company had regulatory assets not earning a return on investment of $1.6 billion and $1.4 billion as of December 31, 2020 and 2019, respectively.

150


Regulatory Liabilities

Regulatory liabilities represent income to be recognized or amounts to be returned to customers in future periods. The Company's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Deferred income taxes(1)
Various$3,600 $3,611 
Cost of removal(2)
26 years2,435 2,370 
Asset retirement obligations31 years305 241 
Levelized depreciation29 years281 304 
OtherVarious854 785 
Total regulatory liabilities$7,475 $7,311 
Reflected as:
Current liabilities$254 $211 
Noncurrent liabilities7,221 7,100 
Total regulatory liabilities$7,475 $7,311 

(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.
(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing regulated property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.

151


(8)Investments and Restricted Cash and Cash Equivalents and Investments

Investments and restricted cash and cash equivalents and investments consists of the following as of December 31 (in millions):
20202019
Investments:
BYD Company Limited common stock$5,897 $1,122 
Rabbi trusts440 410 
Other263 187 
Total investments6,600 1,719 
  
Equity method investments:
BHE Renewables tax equity investments5,626 3,130 
Electric Transmission Texas, LLC594 555 
Iroquois Gas Transmission System, L.P.580 
JAX LNG, LLC75 
Bridger Coal Company74 81 
Other118 181 
Total equity method investments7,067 3,947 
Restricted cash and cash equivalents and investments:  
Quad Cities Station nuclear decommissioning trust funds676 599 
Other restricted cash and cash equivalents155 230 
Total restricted cash and cash equivalents and investments831 829 
  
Total investments and restricted cash and cash equivalents and investments$14,498 $6,495 
Reflected as:
Other current assets$178 $240 
Noncurrent assets14,320 6,255 
Total investments and restricted cash and cash equivalents and investments$14,498 $6,495 

Investments

BHE's investment in BYD Company Limited common stock is accounted for as a marketable security with changes in fair value recognized in net income.

Rabbi trusts primarily hold corporate-owned life insurance on certain current and former key executives and directors. The Rabbi trusts were established to hold investments used to fund the obligations of various nonqualified executive and director compensation plans and to pay the costs of the trusts. The amount represents the cash surrender value of all of the policies included in the Rabbi trusts, net of amounts borrowed against the cash surrender value.

Gains (losses) on marketable securities, net recognized during the period consists of the following (in millions):
Years Ended December 31,
20202019
Unrealized gains (losses) recognized on marketable securities still held at the reporting date$4,791 $(290)
Net gains recognized on marketable securities sold during the period
Gains (losses) on marketable securities, net$4,797 $(288)

152


Equity Method Investments

The Company has invested in projects sponsored by third parties, commonly referred to as tax equity investments. Under the terms of these tax equity investments, the Company has entered into equity capital contribution agreements with the project sponsors that require contributions. The Company has made contributions of $2,736 million, $1,619 million and $698 million in 2020, 2019 and 2018, respectively, and has commitments as of December 31, 2020, subject to satisfaction of certain specified conditions, to provide equity contributions of $563 million in 2021 pursuant to these equity capital contribution agreements as the various projects achieve commercial operation. Once a project achieves commercial operation, the Company enters into a partnership agreement with the project sponsor that directs and allocates the operating profits and tax benefits from the project.

BHE, through a subsidiary, owns 50% of Electric Transmission Texas, LLC, which owns and operates electric transmission assets in the Electric Reliability Council of Texas footprint. BHE, through a subsidiary, owns 50% of Iroquois, which owns and operates an interstate natural gas pipeline located in the states of New York and Connecticut and 50% of JAX LNG, LLC, which is an LNG supplier in Florida serving the growing marine and truck LNG markets. BHE, through a subsidiary, owns 66.67% of Bridger Coal Company ("Bridger Coal"), which is a coal mining joint venture that supplies coal to the Jim Bridger Nos. 1-4 generating facility. Bridger Coal is being accounted for under the equity method of accounting as the power to direct the activities that most significantly impact Bridger Coal's economic performance are shared with the joint venture partner.

Restricted Investments

MidAmerican Energy has established a trust for the investment of funds for decommissioning the Quad Cities Nuclear Station Units 1 and 2 ("Quad Cities Station"). These investments in debt and equity securities are reported at fair value. Funds are invested in the trust in accordance with applicable federal and state investment guidelines and are restricted for use as reimbursement for costs of decommissioning the Quad Cities Station, which are currently licensed for operation until December 2032.

(9)Short-term Debt and Credit Facilities

The following table summarizes BHE's and its subsidiaries' availability under their credit facilities as of December 31 (in millions):
MidAmericanNVNorthernBHE
BHEPacifiCorpFundingEnergyPowergridCanadaOther
Total(1)
2020:
Credit facilities(2)
$3,500 $1,200 $1,509 $650 $228 $923 $3,020 $11,030 
Less: 
Short-term debt(93)(45)(23)(225)(1,900)(2,286)
Tax-exempt bond support and letters of credit(218)(370)(2)(590)
Net credit facilities$3,500 $889 $1,139 $605 $205 $696 $1,120 $8,154 
2019:
Credit facilities$3,500 $1,200 $1,309 $650 $199 $674 $1,880 $9,412 
Less: 
Short-term debt(1,590)(130)(211)(1,283)(3,214)
Tax-exempt bond support and letters of credit(256)(370)(3)(629)
Net credit facilities$1,910 $814 $939 $650 $199 $460 $597 $5,569 
(1)The table does not include unused credit facilities and letters of credit for investments that are accounted for under the equity method.
(2)Includes the drawn uncommitted credit facilities totaling $23 million at Northern Powergrid.

As of December 31, 2020, the Company was in compliance with the covenants of its credit facilities and letter of credit arrangements.

153


BHE

BHE has a $3.5 billion unsecured credit facility expiring in June 2022 with one remaining one-year extension option subject to lender consent. This credit facility, which is for general corporate purposes, supports BHE's commercial paper program and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at BHE's option, plus a spread that varies based on BHE's credit ratings for its senior unsecured long-term debt securities.

As of December 31, 2019, the weighted average interest rate on commercial paper borrowings outstanding was 1.91%. This credit facility requires that BHE's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.70 to 1.0 as of the last day of each quarter.

As of December 31, 2020 and 2019, BHE had $105 million and $107 million, respectively, of letters of credit outstanding. These letters of credit primarily support power purchase agreements and debt service requirements at certain subsidiaries of BHE Renewables, LLC expiring through April 2022 and have provisions that automatically extend the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior to the expiration date.

PacifiCorp

PacifiCorp has a $600 million unsecured credit facility expiring in June 2022 and a $600 million unsecured credit facility expiring in June 2022 with one remaining one-year extension option subject to lender consent. These credit facilities, which support PacifiCorp's commercial paper program, certain series of its tax-exempt bond obligations and provide for the issuance of letters of credit, have variable interest rates based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities.

As of December 31, 2020 and 2019, the weighted average interest rate on commercial paper borrowings outstanding was 0.16% and 2.05%, respectively. These credit facilities require that PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.

As of December 31, 2020 and 2019, PacifiCorp had $11 million and $13 million, respectively, of fully available letters of credit issued under committed arrangements in support of certain transactions required by third parties and generally have provisions that automatically extend the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior to the expiration date.

MidAmerican Funding

MidAmerican Energy has a $900 million unsecured credit facility expiring in June 2022. The credit facility, which supports MidAmerican Energy's commercial paper program and its variable-rate tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread that varies based on MidAmerican Energy's credit ratings for senior unsecured long-term debt securities. MidAmerican Energy has a $600 million unsecured credit facility, which expires in May 2021, with an option to extend for up to three months, and has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread. As of December 31, 2019, MidAmerican Energy had a $400 million unsecured credit facility expiring August 2020, which it terminated in May 2020.

MidAmerican Energy had no commercial paper borrowings outstanding as of December 31, 2020 and 2019. The credit facility requires that MidAmerican Energy's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.

NV Energy

Nevada Power has a $400 million secured credit facility expiring in June 2022 and Sierra Pacific has a $250 million secured credit facility expiring in June 2022. These credit facilities, which are for general corporate purposes and provide for the issuance of letters of credit, have a variable interest rate based on the Eurodollar rate or a base rate, at each of the Nevada Utilities' option, plus a spread that varies based on each of the Nevada Utilities' credit ratings for its senior secured long‑term debt securities. Amounts due under each credit facility are collateralized by each of the Nevada Utilities' general and refunding mortgage bonds. These credit facilities require that each of the Nevada Utilities' ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.
154


Northern Powergrid

Northern Powergrid has a £150 million unsecured credit facility and in October 2020, it exercised the option to extend the credit facility expiry date by one year to October 2023. The credit facility has a variable interest rate based on sterling London Interbank Offered Rate ("LIBOR") plus a spread that varies based on its credit ratings. The credit facility requires that the ratio of consolidated senior total net debt, including current maturities, to regulated asset value not exceed 0.8 to 1.0 at Northern Powergrid and 0.65 to 1.0 at Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc as of June 30 and December 31. Northern Powergrid's interest coverage ratio shall not be less than 2.5 to 1.0.

AltaLink

AltaLink has a C$750500 million secured revolving term credit facility expiring in December 20192024 with a recurring one-year extension option subject to lender consent. The credit facility, which provides support for borrowings under the unsecured commercial paper program and may also be used for general corporate purposes, has a variable interest rate based on the Canadian bank prime lending rate or a spread above the Bankers' Acceptance rate, at ALP'sAltaLink's option, based on ALP'sAltaLink's credit ratings for its senior secured long-term debt securities. In addition, ALPAltaLink has a C$75 million secured revolving term credit facility expiring in December 20192024 with a recurring one-year extension option subject to lender consent. The credit facility, which may be used for general corporate purposes and letters of credit, has a variable interest rate based on the Canadian bank prime lending rate, United States base rate, a spread above the United States LIBOR loan rate or a spread above the Bankers' Acceptance rate, at ALP'sAltaLink's option, based on ALP'sAltaLink's credit ratings for its senior secured long-term debt securities. At

On April 27, 2020, AltaLink added a C$100 million revolving term credit facility to its bank credit facilities with a maturity date of April 27, 2021. The credit facility, which may be used for general corporate purposes, has a variable interest rate based on the renewalCanadian bank prime lending rate or a spread above the Bankers' Acceptance rate, at AltaLink's option, based on AltaLink's credit ratings for its senior secured long-term debt securities. On an annual basis, with the consent of the lenders, the AltaLink can request that the maturity date ALP hasof the optioncredit facility be extended for a further 365 days. AltaLink entered into this credit facility in order to convert these facilitiesprovide additional liquidity during the COVID-19 pandemic and to one-year term facilities.provide support for certain regulatory decisions.


As of December 31, 20172020 and 2016, ALP2019, AltaLink had $121$113 million and $26$192 million outstanding under these facilities at a weighted average interest rate of 1.42%0.36% and 0.99%2.16%, respectively. The credit facilities require the consolidated indebtedness to total capitalization not exceed 0.75 to 1.0 measured as of the last day of each quarter.


AltaLink Investments, L.P. has a C$300 million unsecured revolving term credit facility expiring in December 2022 and a C$200 million unsecured revolving credit facility expiring in December 2018 each2024 with a recurring one-year extension option subject to lender consent. The credit facilities,facility, which may be used for general corporate purposes and letters of credit to a maximum of C$10 million, havehas a variable interest rate based on the Canadian bank prime lending rate, United States base rate, a spread above the United States LIBOR loan rate or a spread above the Bankers' Acceptance rate, at AltaLink Investments, L.P.'s option, based on AltaLink Investments, L.P.'s credit ratings for its senior unsecured long-term debt securities. 


On April 27, 2020, AltaLink Investments, L.P. added a C$200 million revolving term credit facility to its bank credit facilities with a maturity date of April 27, 2021. The credit facility, which may be used for general corporate purposes and letters of credit to a maximum of C$10 million, has a variable interest rate based on the Canadian bank prime lending rate, United States base rate, a spread above the United States LIBOR loan rate or a spread above the Bankers' Acceptance rate, at AltaLink Investments, L.P.'s option, based on AltaLink Investments, L.P.'s credit ratings for its senior unsecured long-term debt securities. On an annual basis, with the consent of the lenders, AltaLink Investments, L.P. can request that the maturity date of the credit facility be extended for a further 365 days.

As of December 31, 20172020 and 2016,2019, AltaLink Investments, L.P. had $224$112 million and $263$19 million outstanding under these facilitiesthis facility at a weighted average interest rate of 2.40%1.47% and 1.74%3.08%, respectively. The credit facilities require the consolidated total debt to capitalization to not exceed 0.8 to 1.0 and earnings before interest, taxes, depreciation and amortization to interest expense for the four fiscal quarters ended to not be less than 2.25 to 1.0 measured as of the last day of each quarter.



155


HomeServices


HomeServices has a $600 million unsecured credit facility expiring in September 2022. The credit facility, which is for general corporate purposes and provides for the issuance of letters of credit, has a variable interest rate based on the LIBOR or a base rate, at HomeServices' option, plus a spread that varies based on HomeServices' total net leverage ratio as of the last day of each quarter. As of December 31, 20172020 and 2016,2019, HomeServices had $292$100 million and $50$318 million, respectively, outstanding under its credit facility with a weighted average interest rate of 2.75%1.15% and 1.77%3.29%, respectively.



Through its subsidiaries, HomeServices maintains mortgage lines of credit totaling $1.0$2.4 billion and $565 million$1.3 billion as of December 31, 20172020 and 2016,2019, respectively, used for mortgage banking activities that expire beginning in January 20182021 through December 2018 or are due on demand.September 2021. The mortgage lines of credit have variable rates based on LIBOR plus a spread. Collateral for these credit facilities is comprised of residential property being financed and is equal to the loans funded with the facilities. As of December 31, 20172020 and 2016,2019, HomeServices had $440 million$1.8 billion and $327$965 million, respectively, outstanding under these mortgage lines of credit at a weighted average interest rate of 3.60%2.03% and 2.77%3.51%, respectively.


BHE Renewables Letters of Credit


In connection with their bond offerings, Topaz and Solar Star entered into separate letter of credit and reimbursement facilities totaling $435 million and $627 million as of December 31, 2017 and 2016. Letters of credit issued under the letter of credit facilities will be used to (a) provide security under the power purchase agreement and large generator interconnection agreements, (b) fund the debt service reserve requirement and the operation and maintenance debt service reserve requirement and (c) provide security for remediation and mitigation liabilities. As of December 31, 20172020 and 2016, $357 million and $599 million, respectively, of letters of credit had been issued under these facilities.

As of December 31, 2017and 2016,2019, certain other renewable projects collectively have letters of credit outstanding of $118$305 million and $106$373 million, respectively, primarily in support of the power purchase agreements and large generator interconnection agreements associated with the projects.


(9)
BHE Debt


156


(10)BHE Debt

Senior Debt


BHE senior debt represents unsecured senior obligations of BHE that are redeemable in whole or in part at any time generally with make-whole premiums. BHE senior debt consists of the following, including fair value adjustments and unamortized premiums, discounts and debt issuance costs, as of December 31 (in millions):
Par Value20202019
2.40% Senior Notes, due 2020349 
2.375% Senior Notes, due 2021450 448 448 
2.80% Senior Notes, due 2023400 398 398 
3.75% Senior Notes, due 2023500 498 498 
3.50% Senior Notes, due 2025400 398 398 
4.05% Senior Notes, due 20251,250 1,246 
3.25% Senior Notes, due 2028600 594 594 
8.48% Senior Notes, due 2028256 257 259 
3.70% Senior Notes, due 20301,100 1,096 
1.65% Senior Notes, due 2031500 497 
6.125% Senior Bonds, due 20361,670 1,661 1,661 
5.95% Senior Bonds, due 2037550 548 548 
6.50% Senior Bonds, due 2037225 223 223 
5.15% Senior Notes, due 2043750 740 740 
4.50% Senior Notes, due 2045750 738 738 
3.80% Senior Notes, due 2048750 738 737 
4.45% Senior Notes, due 20491,000 990 990 
4.25% Senior Notes, due 2050900 889 
2.85% Senior Notes, due 20511,500 1,488 
Total BHE Senior Debt$13,551 $13,447 $8,581 
Reflected as:
Current liabilities$450 $350 
Noncurrent liabilities12,997 8,231 
Total BHE Senior Debt$13,447 $8,581 
 Par Value 2017 2016
      
1.10% Senior Notes, due 2017$
 $
 $400
5.75% Senior Notes, due 2018650
 650
 649
2.00% Senior Notes, due 2018350
 350
 349
2.40% Senior Notes, due 2020350
 349
 349
3.75% Senior Notes, due 2023500
 498
 497
3.50% Senior Notes, due 2025400
 398
 397
8.48% Senior Notes, due 2028301
 302
 477
6.125% Senior Bonds, due 20361,670
 1,660
 1,690
5.95% Senior Bonds, due 2037550
 547
 547
6.50% Senior Bonds, due 2037225
 222
 987
5.15% Senior Notes, due 2043750
 739
 739
4.50% Senior Notes, due 2045750
 737
 737
Total BHE Senior Debt$6,496
 $6,452
 $7,818
      
Reflected as:     
Current liabilities  $1,000
 $400
Noncurrent liabilities  5,452
 7,418
Total BHE Senior Debt  $6,452
 $7,818


In January 2018, BHE issued $450 million of its 2.375% Senior Notes due 2021, $400 million of its 2.800% Senior Notes due 2023, $600 million of its 3.250% Senior Notes due 2028 and $750 million of its 3.800% Senior Notes due 2048. The net proceeds were used to refinance a portion of the Company's short-term indebtedness and for general corporate purposes.

In December 2017, BHE completed a cash tender offer for a portion of its 8.48% Senior Notes due 2028, 6.50% Senior Notes due 2037 and 6.125% Senior Notes due 2036. The total pre-tax costs of the tender offer of $410 million were recorded in other, net on the Consolidated Statement of Operations.

Junior Subordinated Debentures


BHE junior subordinated debentures consists of the following as of December 31 (in millions):
Par Value20202019
Junior subordinated debentures, due 2057100 100 100 
Total BHE junior subordinated debentures - noncurrent
$100 $100 $100 
 Par Value 2017 2016
      
Junior subordinated debentures, due 2044$
 $
 $944
Junior subordinated debentures, due 2057100
 100
 
Total BHE junior subordinated debentures - noncurrent
$100
 $100
 $944


During 2017, BHE repaid at par value a total of $944 million, plus accrued interest, of its junior subordinated debentures due December 2044. Interest expense to Berkshire Hathaway for the years ended December 31, 2017, 2016 and 2015 was $16 million, $65 million and $104 million, respectively.

In June 2017, BHE issued $100 million of its 5.00% junior subordinated debentures due June 2057 in exchange for 181,819 shares of BHE no par value common stock held by a minority shareholder. The junior subordinated debentures are redeemable at BHE's option at any time from and after June 15, 2037, at par plus accrued and unpaid interest. Interest expense to the minority shareholder was $5 million for each of the yearyears ended December 31, 2017 was $3 million.2020 and 2019.


157
(10)


(11)Subsidiary Debt


BHE's direct and indirect subsidiaries are organized as legal entities separate and apart from BHE and its other subsidiaries. Pursuant to separate financing agreements, substantially all of PacifiCorp's electric utility properties; the equity interest of MidAmerican Funding's subsidiary; MidAmerican Energy's electric utility properties in the state of Iowa; substantially all of Nevada Power's and Sierra Pacific's properties in the state of NevadaNevada; AltaLink's transmission properties; and substantially all of the assets of the subsidiaries of BHE Renewables that are direct or indirect owners of solar and wind generation projects are pledged or encumbered to support or otherwise provide the security for their related subsidiary debt. It should not be assumed that the assets of any subsidiary will be available to satisfy BHE's obligations or the obligations of its other subsidiaries. However, unrestricted cash or other assets which are available for distribution may, subject to applicable law, regulatory commitments and the terms of financing and ring-fencing arrangements for such parties, be advanced, loaned, paid as dividends or otherwise distributed or contributed to BHE or affiliates thereof. The long-term debt of BHE's subsidiaries may include provisions that allow BHE's subsidiaries to redeem such debt in whole or in part at any time. These provisions generally include make-whole premiums.


Distributions at these separate legal entities are limited by various covenants including, among others, leverage ratios, interest coverage ratios and debt service coverage ratios. As of December 31, 2017,2020, all subsidiaries were in compliance with their long-term debt covenants.



Long-term debt of subsidiaries consists of the following, including fair value adjustments and unamortized premiums, discounts and debt issuance costs, as of December 31 (in millions):
Par Value20202019
PacifiCorp$8,667 $8,612 $7,658 
MidAmerican Funding7,515 7,431 7,427 
NV Energy3,701 3,673 3,821 
Northern Powergrid3,285 3,259 3,221 
BHE Pipeline Group5,705 6,165 1,247 
BHE Transmission3,897 3,877 3,879 
BHE Renewables3,152 3,116 3,206 
HomeServices186 186 213 
Total subsidiary debt$36,108 $36,319 $30,672 
Reflected as:
Current liabilities$1,389 $2,189 
Noncurrent liabilities34,930 28,483 
Total subsidiary debt$36,319 $30,672 

158

 Par Value 2017 2016
      
PacifiCorp$7,061
 $7,025
 $7,079
MidAmerican Funding5,319
 5,259
 4,592
NV Energy4,577
 4,581
 4,582
Northern Powergrid2,792
 2,805
 2,379
BHE Pipeline Group800
 796
 990
BHE Transmission4,348
 4,334
 4,058
BHE Renewables3,636
 3,594
 3,674
HomeServices247
 247
 
Total subsidiary debt$28,780
 $28,641
 $27,354
      
Reflected as:     
Current liabilities  $2,431
 $606
Noncurrent liabilities  26,210
 26,748
Total subsidiary debt  $28,641
 $27,354


PacifiCorp


PacifiCorp's long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs as of December 31 (dollars in millions):
Par Value20202019
First mortgage bonds:
2.95% to 8.53%, due through 2025$2,149 $2,145 $2,144 
2.70% to 6.71%, due 2026 to 2030900 895 497 
5.25% to 7.70%, due 2031 to 2035800 796 795 
5.75% to 6.35%, due 2036 to 20392,500 2,485 2,484 
4.10%, due 2042300 297 297 
3.30% to 4.15%, due 2049 to 20511,800 1,776 1,186 
Variable-rate series, tax-exempt bond obligations (2020-0.14% to 0.16%; 2019-1.60% to 1.80%):
Due 202038 
Due 202525 25 24 
Due 2024 to 2025(1)
193 193 193 
Total PacifiCorp$8,667 $8,612 $7,658 
 Par Value 2017 2016
First mortgage bonds:     
2.95% to 8.53%, due through 2022$1,875
 $1,872
 $1,872
2.95% to 8.23%, due 2023 to 20261,224
 1,218
 1,217
7.70% due 2031300
 298
 298
5.25% to 6.25%, due 2034 to 20372,050
 2,040
 2,039
4.10% to 6.35%, due 2038 to 20421,250
 1,236
 1,235
Variable-rate series, tax-exempt bond obligations (2017-1.60% to 1.87%; 2016-0.69% to 0.86%):     
Due 2018 to 202079
 79
 91
Due 2018 to 2025(1)
70
 70
 108
Due 2024(1)(2)
143
 142
 142
Due 2024 to 2025(2)
50
 50
 50
Capital lease obligations - 8.75% to 14.61%, due through 203520
 20
 27
Total PacifiCorp$7,061
 $7,025
 $7,079


(1)Supported by $216 million and $255 million of fully available letters of credit issued under committed bank arrangements as of December 31, 2017 and 2016, respectively.
(2)Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.

(1)Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.

The issuance of PacifiCorp's first mortgage bonds is limited by available property, earnings tests and other provisions of PacifiCorp's mortgage. Approximately $27$30 billion of PacifiCorp's eligible property (based on original cost) was subject to the lien of the mortgage as of December 31, 2017.2020.



159


MidAmerican Funding


MidAmerican Funding's long-term debt consists of the following, including fair value adjustments and unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
MidAmerican Funding:
6.927% Senior Bonds, due 2029$239 $221 $219 
MidAmerican Energy:
Tax-exempt bond obligations -
Variable-rate tax-exempt bond obligation series: (weighted average interest rate - 2020-0.14%, 2019-1.66%), due 2023-2047370 368 368 
First Mortgage Bonds:
3.70%, due 2023250 249 249 
3.50%, due 2024500 501 501 
3.10%, due 2027375 373 373 
3.65%, due 2029850 862 864 
4.80%, due 2043350 346 346 
4.40%, due 2044400 395 395 
4.25%, due 2046450 445 445 
3.95%, due 2047475 470 470 
3.65%, due 2048700 689 688 
4.25%, due 2049900 873 872 
3.15%, due 2050600 592 591 
Notes:
6.75% Series, due 2031400 397 396 
5.75% Series, due 2035300 298 298 
5.80% Series, due 2036350 348 348 
Transmission upgrade obligation, 4.45% and 3.42% due through 2035 and 2036, respectively
Total MidAmerican Energy7,276 7,210 7,208 
Total MidAmerican Funding$7,515 $7,431 $7,427 
 Par Value 2017 2016
MidAmerican Funding:     
6.927% Senior Bonds, due 2029$239
 $216
 $291
      
MidAmerican Energy:     
Tax-exempt bond obligations -     
Variable-rate tax-exempt bond obligation series: (2017-1.91%, 2016-0.76%), due 2023-2047370
 368
 219
First Mortgage Bonds:     
2.40%, due 2019500
 499
 499
3.70%, due 2023250
 248
 248
3.50%, due 2024500
 501
 501
3.10%, due 2027375
 372
 
4.80%, due 2043350
 346
 345
4.40%, due 2044400
 394
 394
4.25%, due 2046450
 445
 445
3.95%, due 2047475
 470
 
Notes:     
5.95% Series, due 2017
 
 250
5.30% Series, due 2018350
 350
 350
6.75% Series, due 2031400
 396
 396
5.75% Series, due 2035300
 298
 298
5.80% Series, due 2036350
 348
 347
Transmission upgrade obligation, 4.45% and 3.42% due through 2035 and 2036, respectively
8
 6
 7
Capital lease obligations - 4.16%, due through 20202
 2
 2
Total MidAmerican Energy5,080
 5,043
 4,301
Total MidAmerican Funding$5,319
 $5,259
 $4,592

In February 2018, MidAmerican Energy issued $700 million of its 3.65% First Mortgage Bonds due August 2048.

In December 2017, MidAmerican Funding completed a cash tender offer for a portion of its 6.927% Senior Bonds. The total pre-tax costs of the tender offer of $29 million were recorded in other, net on the Consolidated Statement of Operations.


Pursuant to MidAmerican Energy's mortgage dated September 9, 2013, as amended by the First Supplemental Indenture dated as of September 19, 2013, MidAmerican Energy's first mortgage bonds, currently and from time to time outstanding, are secured by a first mortgage lien on substantially all of its electric generating, transmission and distribution property within the state of Iowa, subject to certain exceptions and permitted encumbrances. As of December 31, 2017,2020, MidAmerican Energy's eligible property subject to the lien of the mortgage totaled approximately $16$22 billion based on original cost. Additionally, MidAmerican Energy's senior notes outstanding are equally and ratably secured with the first mortgage bonds as required by the indentures under which the senior notes were issued.


MidAmerican Energy's variable-rate tax-exempt obligations bear interest at rates that are periodically established through remarketing of the bonds in the short-term tax-exempt market. MidAmerican Energy, at its option, may change the mode of interest calculation for these bonds by selecting from among several floating or fixed rate alternatives. The interest rates shown in the table above are the weighted average interest rates as of December 31, 20172020 and 2016.2019. MidAmerican Energy maintains revolving credit facility agreements to provide liquidity for holders of these issues and $180 million of the variable rate, tax-exempt bonds are secured by an equal amount of first mortgage bonds pursuant to MidAmerican Energy's mortgage dated September 9, 2013, as supplemented and amended.




160


NV Energy


NV Energy's long-term debt consists of the following, including fair value adjustments and unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
NV Energy:
6.250% Senior Notes, due 2020$$$321 
Nevada Power:
General and refunding mortgage securities:
2.750% Series BB, due 2020575 
3.700% Series CC, due 2029500 496 496 
2.400% Series DD, due 2030425 422 
6.650% Series N, due 2036367 361 360 
6.750% Series R, due 2037349 347 348 
5.375% Series X, due 2040250 249 249 
5.450% Series Y, due 2041250 244 245 
3.125% Series EE, due 2050300 297 
Tax-exempt refunding revenue bond obligations:
Fixed-rate series:
1.875% Pollution Control Bonds Series 2017A, due 2032(1)
40 39 39 
1.650% Pollution Control Bonds Series 2017, due 2036(1)
40 39 39 
1.650% Pollution Control Bonds Series 2017B, due 2039(1)
13 13 13 
Total Nevada Power2,534 2,507 2,364 
Sierra Pacific:
General and refunding mortgage securities:
3.375% Series T, due 2023250 249 249 
2.600% Series U, due 2026400 397 396 
6.750% Series P, due 2037252 256 256 
Tax-exempt refunding revenue bond obligations:
Fixed-rate series:
1.850% Pollution Control Series 2016B, due 2029(2)
30 29 29 
3.000% Gas and Water Series 2016B, due 2036(3)
60 61 62 
0.625% Water Facilities Series 2016C, due 2036(4)
30 30 
2.050% Water Facilities Series 2016D, due 2036(2)(5)
25 25 25 
2.050% Water Facilities Series 2016E, due 2036(2)(5)
25 25 25 
2.050% Water Facilities Series 2016F, due 2036(2)
75 74 74 
1.850% Water Facilities Series 2016G, due 2036(2)
20 20 20 
Total Sierra Pacific1,167 1,166 1,136 
Total NV Energy$3,701 $3,673 $3,821 
 Par Value 2017 2016
NV Energy -     
6.250% Senior Notes, due 2020$315
 $337
 $363
      
Nevada Power:     
General and refunding mortgage securities:     
6.500% Series O, due 2018324
 324
 324
6.500% Series S, due 2018499
 499
 498
7.125% Series V, due 2019500
 499
 499
6.650% Series N, due 2036367
 359
 357
6.750% Series R, due 2037349
 348
 345
5.375% Series X, due 2040250
 248
 247
5.450% Series Y, due 2041250
 244
 236
Tax-exempt refunding revenue bond obligations:     
Fixed-rate series:     
1.800% Pollution Control Bonds Series 2017A, due 2032(1)
40
 40
 
1.600% Pollution Control Bonds Series 2017, due 2036(1)
40
 39
 
1.600% Pollution Control Bonds Series 2017B, due 2039(1)
13
 13
 
Variable-rate series - 1.890% to 1.928%     
Pollution Control Bonds Series 2006A, due 2032
 
 38
Pollution Control Bonds Series 2006, due 2036
 
 37
Capital and financial lease obligations - 2.750% to 11.600%, due through 2054475
 475
 485
Total Nevada Power3,107
 3,088
 3,066
      
Sierra Pacific:     
General and refunding mortgage securities:     
3.375% Series T, due 2023250
 249
 248
2.600% Series U, due 2026400
 396
 395
6.750% Series P, due 2037252
 256
 255
Tax-exempt refunding revenue bond obligations:     
Fixed-rate series:     
1.250% Pollution Control Series 2016A, due 2029(2)
20
 20
 20
1.500% Gas Facilities Series 2016A, due 2031(2)
59
 58
 58
3.000% Gas and Water Series 2016B, due 2036(3)
60
 63
 64
Variable-rate series (2017 - 1.690% to 1.840%, 2016 - 0.788% to 0.800%):     
Water Facilities Series 2016C, due 203630
 30
 29
Water Facilities Series 2016D, due 203625
 25
 25
Water Facilities Series 2016E, due 203625
 25
 25
Capital and financial lease obligations (2017 - 2.700% to 10.396%, 2016 - 2.700% to 10.130%), due through 205434
 34
 34
Total Sierra Pacific1,155
 1,156
 1,153
Total NV Energy$4,577
 $4,581
 $4,582


(1)    Bonds were purchased by Nevada Power in May 2020 and re-offered at a fixed interest rate. Subject to mandatory purchase by Nevada Power in May 2020March 2023 at which date the interest rate may be adjusted from time to time.adjusted.
(2)    Subject to mandatory purchase by Sierra Pacific in June 2019April 2022 at which date the interest rate may be adjusted from time to time.adjusted.
(3)    Subject to mandatory purchase by Sierra Pacific in June 2022 at which date the interest rate may be adjusted from timeadjusted.
(4)    Bond was purchased by Sierra Pacific during 2019 and re-offered at a fixed rate in September 2020 for a two-year term subject to time.mandatory purchase by Sierra Pacific in April 2022.

(5)    Bonds were purchased by Sierra Pacific during 2019 and re-offered at a fixed interest rate.


161


The issuance of General and Refunding Mortgage Securities by the Nevada Utilities are subject to PUCN approval and are limited by available property and other provisions of the mortgage indentures for each of Nevada Power and Sierra Pacific. As of December 31, 2017,2020, approximately $8.4$9.1 billion of Nevada Power's and $3.9$4.3 billion of Sierra Pacific's (based on original cost) property was subject to the liens of the mortgages.


Northern Powergrid


Northern Powergrid and its subsidiaries' long-term debt consists of the following, including fair value adjustments and unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value(1)
20202019
8.875% Bonds, due 2020$$$135 
9.25% Bonds, due 2020265 
4.133% European Investment Bank loans, due 2022206 206 252 
7.25% Bonds, due 2022274 277 270 
2.50% Bonds, due 2025205 203 197 
2.073% European Investment Bank loan, due 202568 70 68 
2.564% European Investment Bank loans, due 2027342 340 330 
7.25% Bonds, due 2028254 257 250 
4.375% Bonds, due 2032205 202 196 
5.125% Bonds, due 2035274 270 262 
5.125% Bonds, due 2035205 203 197 
2.750% Bonds, due 2049205 202 196 
2.250% Bonds, due 2059410 402 389 
1.875% Bonds, due 2062410 403 
Variable-rate loan, due 2026(2)
186 183 214 
Variable-rate loan, due 2026(3)
41 41 
Total Northern Powergrid$3,285 $3,259 $3,221 

(1)The par values for these debt instruments are denominated in sterling.
(2)Amortizes semiannually and the Company has entered into an interest rate swap that fixes the interest rate on 89% of the outstanding debt. The variable interest rate as of December 31, 2020 was 2.03% (including 2.0% margin) and the fixed interest rate was 3.07% (including 2.0% margin), resulting in a blended rate of 2.96%.
(3)Amortizes semiannually and is 100% variable based on LIBOR. The variable interest rate as of December 31, 2020 was 2.02% (including 2.0% margin).

162


 
Par Value(1)
 2017 2016
      
8.875% Bonds, due 2020$135
 $144
 $136
9.25% Bonds, due 2020270
 279
 259
3.901% to 4.586% European Investment Bank loans, due 2018 to 2022366
 366
 333
7.25% Bonds, due 2022270
 279
 257
2.50% Bonds due 2025203
 200
 182
2.073% European Investment Bank loan, due 202568
 69
 62
2.564% European Investment Bank loans, due 2027338
 336
 308
7.25% Bonds, due 2028250
 256
 234
4.375% Bonds, due 2032203
 199
 182
5.125% Bonds, due 2035270
 267
 243
5.125% Bonds, due 2035203
 200
 183
Variable-rate bond, due 2026(2)
216
 210
 
Total Northern Powergrid$2,792
 $2,805
 $2,379

(1)The par values for these debt instruments are denominated in sterling.
(2)Amortizes semiannually and the Company has entered into an interest rate swap that fixes the interest rate on 85% of the outstanding debt. The variable interest rate as of December 31, 2017 was 2.27% while the fixed interest rate was 2.82%.

BHE Pipeline Group


BHE Pipeline Group's long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
Eastern Energy Gas:
Variable-rate Senior Notes, due 2021(1)
$500 $500 $
2.875% Senior Notes, due 2023250 249 
3.55% Senior Notes, due 2023400 399 
2.50% Senior Notes, due 2024600 596 
3.60% Senior Notes, due 2024450 448 
3.32% Senior Notes, due 2026 (€250)(2)
305 304 
3.00% Senior Notes, due 2029600 594 
3.80% Senior Notes, due 2031150 150 
4.80% Senior Notes, due 2043400 395 
4.60% Senior Notes, due 2044500 493 
3.90% Senior Notes, due 2049300 297 
Total Eastern Energy Gas4,455 4,425 
Purchase price adjustment493 
Total Eastern Energy Gas, net of purchase accounting adjustment4,455 4,918 
Northern Natural Gas:
4.25% Senior Notes, due 2021200 200 200 
5.80% Senior Bonds, due 2037150 149 149 
4.10% Senior Bonds, due 2042250 248 248 
4.30% Senior Bonds, due 2049650 650 650 
Total Northern Natural Gas1,250 1,247 1,247 
Total BHE Pipeline Group$5,705 $6,165 $1,247 
 Par Value 2017 2016
Northern Natural Gas:     
5.75% Senior Notes, due 2018$200
 $200
 $199
4.25% Senior Notes, due 2021200
 199
 199
5.8% Senior Bonds, due 2037150
 149
 149
4.1% Senior Bonds, due 2042250
 248
 248
Total Northern Natural Gas800
 796
 795
      
Kern River:     
4.893% Senior Notes, due 2018
 
 195
      
Total BHE Pipeline Group$800
 $796
 $990


(1)    The senior notes have variable interest rates based on LIBOR plus an applicable margin. Eastern Energy Gas has entered into an interest rate swap that fixes the interest rate on 100% of the notes. The fixed interest rates as of December 31, 2020 and 2019 were 3.46% including a 0.60% margin.
In April 2017, Kern River redeemed(2)    The senior notes are denominated in Euros with an outstanding principal balance of €250 million and a fixed interest rate of 1.45%. Eastern Energy Gas has entered into cross currency swaps that fix USD payments for 100% of the remaining amount of its 4.893% Senior Notes due April 2018 at a redemption price determined in accordancenotes. The fixed USD outstanding principal when combined with the terms of the indenture. The total pre-tax costs of the early redemption of $5swaps is $280 million, were recorded in other, net on the Consolidated Statement of Operations.with fixed interest rates at both December 31, 2020 and 2019 that averaged 3.32%.



163


BHE Transmission


BHE Transmission's long-term debt consists of the following, including fair value adjustments and unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value(1)
20202019
AltaLink Investments, L.P.:
Series 13-1 Senior Bonds, 3.265%, due 2020$$$154 
Series 15-1 Senior Bonds, 2.244%, due 2022157 157 154 
Total AltaLink Investments, L.P.157 157 308 
AltaLink, L.P.:
Series 2013-2 Notes, 3.621%, due 202096 
Series 2012-2 Notes, 2.978%, due 2022216 216 212 
Series 2013-4 Notes, 3.668%, due 2023393 392 384 
Series 2014-1 Notes, 3.399%, due 2024275 275 269 
Series 2016-1 Notes, 2.747%, due 2026275 274 269 
Series 2020-1 Notes, 1.509%, due 2030177 175 
Series 2006-1 Notes, 5.249%, due 2036118 118 115 
Series 2010-1 Notes, 5.381%, due 204098 98 96 
Series 2010-2 Notes, 4.872%, due 2040118 117 115 
Series 2011-1 Notes, 4.462%, due 2041216 215 211 
Series 2012-1 Notes, 3.990%, due 2042413 407 398 
Series 2013-3 Notes, 4.922%, due 2043275 274 268 
Series 2014-3 Notes, 4.054%, due 2044232 230 226 
Series 2015-1 Notes, 4.090%, due 2045275 273 268 
Series 2016-2 Notes, 3.717%, due 2046354 351 345 
Series 2013-1 Notes, 4.446%, due 2053196 196 192 
Series 2014-2 Notes, 4.274%, due 2064102 102 100 
Total AltaLink, L.P.3,733 3,713 3,564 
Other:
Construction Loan, 5.620%, due 2024
Total BHE Transmission$3,897 $3,877 $3,879 

(1)The par values for these debt instruments are denominated in Canadian dollars.

164


 
Par Value(1)
 2017 2016
AltaLink Investments, L.P.:     
Series 12-1 Senior Bonds, 3.674%, due 2019$159
 $162
 $153
Series 13-1 Senior Bonds, 3.265%, due 2020159
 161
 152
Series 15-1 Senior Bonds, 2.244%, due 2022159
 158
 148
Total AltaLink Investments, L.P.477
 481
 453
      
AltaLink, L.P.:     
Series 2008-1 Notes, 5.243%, due 2018159
 159
 148
Series 2013-2 Notes, 3.621%, due 2020100
 99
 93
Series 2012-2 Notes, 2.978%, due 2022219
 218
 204
Series 2013-4 Notes, 3.668%, due 2023398
 397
 371
Series 2014-1 Notes, 3.399%, due 2024278
 278
 260
Series 2016-1 Notes, 2.747%, due 2026278
 277
 259
Series 2006-1 Notes, 5.249%, due 2036119
 119
 111
Series 2010-1 Notes, 5.381%, due 2040100
 99
 93
Series 2010-2 Notes, 4.872%, due 2040119
 119
 111
Series 2011-1 Notes, 4.462%, due 2041219
 218
 204
Series 2012-1 Notes, 3.990%, due 2042418
 412
 385
Series 2013-3 Notes, 4.922%, due 2043278
 278
 260
Series 2014-3 Notes, 4.054%, due 2044235
 233
 218
Series 2015-1 Notes, 4.090%, due 2045278
 277
 259
Series 2016-2 Notes, 3.717%, due 2046358
 356
 333
Series 2013-1 Notes, 4.446%, due 2053199
 198
 186
Series 2014-2 Notes, 4.274%, due 2064103
 103
 97
Total AltaLink, L.P.3,858
 3,840
 3,592
      
Other:     
Construction Loan, 5.660%, due 202013
 13
 13
      
Total BHE Transmission$4,348
 $4,334
 $4,058

(1)The par values for these debt instruments are denominated in Canadian dollars.


BHE Renewables


BHE Renewables' long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
Fixed-rate(1):
Bishop Hill Holdings Senior Notes, 5.125%, due 2032$70 $69 $77 
Solar Star Funding Senior Notes, 3.950%, due 2035271 269 280 
Solar Star Funding Senior Notes, 5.375%, due 2035861 853 886 
Grande Prairie Wind Senior Notes, 3.860%, due 2037330 327 355 
Topaz Solar Farms Senior Notes, 5.750%, due 2039638 631 672 
Topaz Solar Farms Senior Notes, 4.875%, due 2039182 180 193 
Alamo 6 Senior Notes, 4.170%, due 2042208 205 213 
Other13 
Variable-rate(1):
TX Jumbo Road Term Loan, due 2025(2)
140 138 158 
Marshall Wind Term Loan, due 2026(2)
70 69 75 
Pinyon Pines I and II Term Loans, due 2034(2)
373 367 284 
Total BHE Renewables$3,152 $3,116 $3,206 
 Par Value 2017 2016
Fixed-rate(1):
     
CE Generation Bonds, 7.416%, due 2018$
 $
 $67
Salton Sea Funding Corporation Bonds, 7.475%, due 2018
 
 31
Cordova Funding Corporation Bonds, 8.48% to 9.07%, due 2019
 
 97
Bishop Hill Holdings Senior Notes, 5.125%, due 203294
 93
 99
Solar Star Funding Senior Notes, 3.950%, due 2035314
 310
 311
Solar Star Funding Senior Notes, 5.375%, due 2035975
 965
 966
Grande Prairie Wind Senior Notes, 3.860%, due 2037408
 404
 414
Topaz Solar Farms Senior Notes, 5.750%, due 2039755
 745
 780
Topaz Solar Farms Senior Notes, 4.875%, due 2039219
 217
 229
Alamo 6 Senior Notes, 4.170%, due 2042232
 229
 
Other19
 19
 22
Variable-rate(1):
     
Pinyon Pines I and II Term Loans, due 2019(2)
334
 333
 355
Wailuku Special Purpose Revenue Bonds, 0.90%, due 2021
 
 7
TX Jumbo Road Term Loan, due 2025(2)
198
 193
 206
Marshall Wind Term Loan, due 2026(2)
88
 86
 90
Total BHE Renewables$3,636
 $3,594
 $3,674


(1)Amortizes quarterly or semiannually.
(1)Amortizes quarterly or semiannually.
(2)
(2)The term loans have variable interest rates based on LIBOR plus a margin that varies during the terms of the agreements. The Company has entered into interest rate swaps that fix the interest rate on 75% of the Pinyon Pines outstanding debt and 100% of the TX Jumbo Road and Marshall Wind outstanding debt. The variable interest rate as of December 31, 2017 and 2016 was 3.32% and 2.62%, respectively, while the fixed interest rates as of December 31, 2017 and 2016 ranged from 3.21% to 3.63%.

In December 2017, Wailuku River Hydroelectric Limited Partnership redeemed the remaining amount of its variable rate Special Purpose Revenue Bonds due December 2021 at a redemption price determined in accordance with the terms of the indenture.

In July 2017, Cordova Funding Corporation redeemedagreements. The Company has entered into interest rate swaps that fix the remaining amount of its 8.48% to 9.07% Series A Senior Secured Bonds due December 2019, CE Generation, LLC redeemed the remaining amount of its 7.416% Senior Secured Bonds due December 2018, and Salton Sea Funding Corporation redeemed the remaining amount of its 7.475% Senior Secured Series F Bonds due November 2018, each at redemption prices determined in accordance with the termsinterest rate on 100% of the respective indentures.

Pinyon Pines, TX Jumbo Road and Marshall Wind outstanding debt. The total pre-tax costsfixed interest rates as of December 31, 2020 and 2019 ranged from 3.21% to 5.41%. As of December 31, 2019, Pinyon Pines I and II had entered into interest rate swaps that fixed the interest rate on 75% of the early redemptionsPinyon Pines outstanding debt through December 31, 2019 and 50% of $15 million were recorded in other, net on the Consolidated StatementPinyon Pines outstanding debt thereafter. The variable interest rate as of Operations.December 31, 2019 was 3.69%.


HomeServices


HomeServices' long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
Variable-rate:
Variable-rate term loan (2020 - 1.394%, 2019 - 3.299%), due 2022(1)
$186 $186 $213 

(1)Term loan amortizes quarterly and variable-rate resets monthly.


165

 Par Value 2017 2016
Variable-rate(1):
     
Variable-rate term loan, 2017 - 2.819%, due 2022$247
 $247
 $


(1)Amortizes quarterly.




Annual Repayments of Long-Term Debt


The annual repayments of BHE and subsidiary debt for the years beginning January 1, 20182021 and thereafter, excluding fair value adjustments and unamortized premiums, discounts and debt issuance costs, are as follows (in millions):
2026 and
20212022202320242025ThereafterTotal
BHE senior notes$450 $$900 $$1,650 $10,551 $13,551 
BHE junior subordinated debentures100 100 
PacifiCorp420 605 449 591 302 6,300 8,667 
MidAmerican Funding315 535 13 6,652 7,515 
NV Energy250 3,451 3,701 
Northern Powergrid40 521 42 44 319 2,319 3,285 
BHE Pipeline Group700 650 1,050 3,305 5,705 
BHE Transmission374 394 280 2,849 3,897 
BHE Renewables196 195 200 210 241 2,110 3,152 
HomeServices33 153 186 
Totals$1,839 $1,848 $3,200 $2,710 $2,525 $37,637 $49,759 

           2023 and  
 2018 2019 2020 2021 2022 Thereafter Total
              
BHE senior notes$1,000
 $
 $350
 $
 $
 $5,146
 $6,496
BHE junior subordinated debentures
 
 
 
 
 100
 100
PacifiCorp588
 351
 39
 425
 606
 5,052
 7,061
MidAmerican Funding350
 501
 2
 
 
 4,466
 5,319
NV Energy844
 520
 336
 27
 28
 2,822
 4,577
Northern Powergrid66
 78
 483
 26
 501
 1,638
 2,792
BHE Pipeline Group200
 
 
 200
 
 400
 800
BHE Transmission160
 160
 269
 
 378
 3,381
 4,348
BHE Renewables209
 473
 168
 175
 172
 2,439
 3,636
HomeServices14
 20
 27
 33
 153
 
 247
Totals$3,431
 $2,103
 $1,674
 $886
 $1,838
 $25,444
 $35,376

(11)(12)Income Taxes

Tax Cuts and Jobs Act


The 2017 Tax Reform impacts many areas ofCompany's provision for income taxes has been computed on a stand-alone basis. Berkshire Hathaway includes the Company in its consolidated United States federal and Iowa state income tax law. The most material items includereturns and the reductionmajority of the Company's United States federal income tax is remitted to or received from Berkshire Hathaway. As of December 31, 2020, the Company had a current income tax receivable from Berkshire Hathaway for federal income tax of $13 million and a long-term income tax receivable from Berkshire Hathaway, reflected as a component of BHE's shareholders' equity, of $658 million for Iowa state income tax. As of December 31, 2019, the Company had a current income tax payable to Berkshire Hathaway for federal income tax of $76 million and a long-term income tax receivable from Berkshire Hathaway, reflected as a component of BHE's shareholders' equity, of $530 million for Iowa state income tax. Additionally, for the years ended December 31, 2020 and 2019 the Company generated $138 million and $79 million, respectively, of state of Iowa net operating losses which were carried forward and increased the long-term income tax receivable from Berkshire Hathaway.

The BHE GT&S acquisition on November 1, 2020 was treated as a deemed asset acquisition for federal and state income tax purposes due to Berkshire Hathaway and DEI making tax elections under Internal Revenue Code ("IRC") §338(h)(10) for all C-corporations acquired, the intent on making or having in place IRC §754 elections for any partnership interests purchased, and due to all single member LLCs acquired being treated as disregarded entities for income tax purposes. All deferred taxes at BHE GT&S were reset to reflect book and tax basis differences as of November 1, 2020. The primary deferred tax items recorded by the Company include long-term debt, pension and other postretirement liabilities, and intangible assets. Since the BHE GT&S acquisition is deemed an asset acquisition for federal and state income tax purposes, all of the approximately $0.9 billion of tax goodwill is amortizable over 15 years. At the acquisition date there is no deferred tax liability recorded for the difference between book goodwill of approximately $1.7 billion versus the tax goodwill of approximately $0.9 billion, due to the inability to record a deferred tax liability when book goodwill exceeds tax goodwill.

Iowa Senate File 2417

In May 2018, Iowa Senate File 2417 was signed into law, which, among other items, reduces the state of Iowa corporate tax rate from 35%12% to 21% effective January 1, 2018, the one-time repatriation9.8% and eliminates corporate federal deductibility, both for tax of foreign earnings and profits and limitations on bonus depreciation for utility property.years starting in 2021. GAAP requires the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted.


166


As a result of the 2017 Tax Reform,Iowa Senate File 2417, the Company reduced deferred income tax liabilities $7,115$61 million and decreased deferred income tax expense by $2 million. As it is probable the change in deferred taxes for the Company's regulated businesses will be passed back to customers through regulatory mechanisms, the Company increased net regulatory liabilities by $5,950$59 million. The reduction inIn connection with Iowa Senate File 2417, the Company determined it was more appropriate to present the deferred income tax liabilities also resulted inassets of $609 million associated with the state of Iowa net operating loss carryforward as a long-term income tax receivable from Berkshire Hathaway as a component of BHE's shareholders' equity. As the Company does not currently expect to receive the majority of the income tax amounts from Berkshire Hathaway related to the state of Iowa prior to the 2021 effective date, the Company remeasured the long-term income tax receivable with Berkshire Hathaway at the enactment date and recorded a decrease in deferredto the long-term income tax expensereceivable from Berkshire Hathaway of $1,150 million, mostly driven by the Company's non-regulated businesses, primarily BHE Renewables, BHE's investment in BYD Company Limited and HomeServices.

As a result of the 2017 Tax Reform, BHE's consolidated net income increased by $516 million primarily due to benefits from reductions in deferred income tax liabilities of $1,150 million, partially offset by an accrual for the deemed repatriation of undistributed foreign earnings and profits totaling $419 million and equity earnings charges totaling $228 million mainly for amounts to be returned$115 million. Subsequent to the customersremeasurement date, the Company amended the tax sharing agreement with Berkshire Hathaway and received $90 million in 2019 related to previously used state of equity investments in regulated entities.Iowa net operating loss carryforwards.

In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. The Company has recorded the impacts of the 2017 Tax Reform and believes all the impacts to be complete with the exception of the repatriation tax on foreign earnings and interpretations of the bonus depreciation rules. The Company has determined the amounts recorded and the interpretations relating to these two items to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. The Company believes the estimates for the repatriation tax to be reasonable, however, additional time is required to validate the inputs to the foreign earnings and profits calculation, the basis on which the repatriation tax is determined, and additional guidance is required to determine state income tax implications. The Company also believes its interpretations for bonus depreciation to be reasonable, however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.



Income tax (benefit) expense consists of the following for the years ended December 31 (in millions):
202020192018
Current:
Federal$(1,537)$(956)$(686)
State(121)(13)(9)
Foreign86 81 104 
(1,572)(888)(591)
Deferred:
Federal1,438 431 165 
State424 (127)(131)
Foreign21 (8)(20)
1,883 296 14 
Investment tax credits(3)(6)(6)
Total$308 $(598)$(583)
 2017 2016 2015
Current:     
Federal$(653) $(743) $(929)
State(3) 1
 29
Foreign83
 55
 84
 (573) (687) (816)
Deferred:     
Federal(76) 1,164
 1,310
State100
 (59) (53)
Foreign2
 (7) 17
 26
 1,098
 1,274
      
Investment tax credits(7) (8) (8)
Total$(554) $403
 $450


A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense (benefit) expense is as follows for the years ended December 31:
202020192018
Federal statutory income tax rate21 %21 %21 %
Income tax credits(16)(32)(30)
Effects of ratemaking(3)(6)(8)
State income tax, net of federal income tax benefit(5)(6)
Effects of tax rate change and repatriation tax(4)
Income tax effect of foreign income(2)(3)
Equity income
Other, net(1)(1)(1)
Effective income tax rate%(25)%(30)%
 2017 2016 2015
      
Federal statutory income tax rate35 % 35 % 35 %
Income tax credits(20) (14) (11)
State income tax, net of federal income tax benefit3
 (1) (1)
Effects of tax rate change and repatriation tax(31) 
 
Income tax effect of foreign income(5) (6) (7)
Equity income(2) 2
 2
Other, net(2) (2) (2)
Effective income tax rate(22)% 14 % 16 %


Effects of 2017 Tax Reform have been included in state income tax, net of federal income tax benefit, effects of tax rate change and repatriation tax and equity income.

Income tax credits relate primarily to production tax credits ("PTC") from wind-powered generating facilities owned by MidAmerican Energy, PacifiCorp and BHE Renewables. Federal renewable electricity production tax creditsPTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service.


Income tax effect ofon foreign income includes, among other items, a deferred income tax benefitscharge of $16$35 million in 2016 and $39 million in 20152020 related to the enactment of reductions in the United Kingdom corporate income tax rate. In September 2016, theKingdom's corporate income tax rate that was reducedscheduled to decrease from 18%19% to 17% effective April 1, 2020. In November 2015,2020; however, the corporate income tax rate was reduced from 20% tomaintained at 19% effective April 1, 2017, with a further reduction to 18% effective April 1,through amended legislation enacted in July 2020.


Berkshire Hathaway includes the Company in its United States federal income tax return. As of December 31, 2017, the Company had current income taxes receivable from Berkshire Hathaway of $334 million. As of December 31, 2016, the Company had current income taxes payable to Berkshire Hathaway of $27 million.

167



The net deferred income tax liability consists of the following as of December 31 (in millions):
20202019
Deferred income tax assets:
Regulatory liabilities$1,420 $1,610 
Federal, state and foreign carryforwards677 575 
AROs304 306 
Other777 590 
Total deferred income tax assets3,178 3,081 
Valuation allowances(204)(143)
Total deferred income tax assets, net2,974 2,938 
Deferred income tax liabilities:
Property-related items(10,816)(10,439)
Investments(2,821)(1,137)
Regulatory assets(785)(631)
Other(327)(384)
Total deferred income tax liabilities(14,749)(12,591)
Net deferred income tax liability$(11,775)$(9,653)
 2017 2016
Deferred income tax assets:   
Regulatory liabilities$1,707
 $909
Federal, state and foreign carryforwards1,118
 987
AROs223
 326
Employee benefits45
 209
Derivative contracts2
 29
Other448
 707
Total deferred income tax assets3,543
 3,167
Valuation allowances(126) (64)
Total deferred income tax assets, net3,417
 3,103
    
Deferred income tax liabilities:   
Property-related items(9,950) (14,237)
Investments(843) (962)
Regulatory assets(651) (1,449)
Other(215) (334)
Total deferred income tax liabilities(11,659) (16,982)
Net deferred income tax liability$(8,242) $(13,879)


The following table provides the Company's net operating loss and tax credit carryforwards and expiration dates as of December 31, 20172020 (in millions):
FederalStateForeignTotal
Net operating loss carryforwards(1)
$302 $7,190 $704 $8,196 
Deferred income taxes on net operating loss carryforwards63 409 162 634 
Expiration dates2021 - indefinite2021 - indefinite2021 - 2039
Tax credits$15 $28 $$43 
Expiration dates2023 - 20262021 - indefinite
 Federal State Foreign Total
Net operating loss carryforwards(1)
$172
 $10,813
 $605
 $11,590
Deferred income taxes on net operating loss carryforwards$37
 $858
 $163
 $1,058
Expiration dates2023-2025 2018-2037 2035-2037 

        
Tax credits$31
 $29
 $
 $60
Expiration dates2023- indefinite 2018- indefinite 
 


(1)The federal net operating loss carryforwards relate principally to net operating loss carryforwards of subsidiaries that are tax residents in both the United States and the United Kingdom. The federal net operating loss carryforwards were generated prior to Berkshire Hathaway Inc.'s ownership and will begin to expire in 2021.
(1)The federal net operating loss carryforwards relate principally to net operating loss carryforwards of subsidiaries that are tax residents in both the United States and the United Kingdom. The federal net operating loss carryforwards were generated prior to Berkshire Hathaway Inc.'s ownership and will begin to expire in 2023.


The United States Internal Revenue Service has closed or effectively settled its examination of the Company's income tax returns through December 31, 2009. State tax agencies have closed their examinations of, or the2013. The statute of limitations has expired for the Company's income tax returns through December 31, 2005, for California and Utah, through December 31, 2007 for Kansas and Minnesota, through December 31, 2008 for Illinois,have expired through December 31, 2009, for Idaho,Utah, through December 31, 2011, for California, Michigan, Minnesota, Montana, Nebraska, Oregon and OregonWisconsin, and through December 31, 20132016, except for Iowa.the impact of any federal audit adjustments, for Connecticut, Idaho, Illinois, Iowa, Kansas and New York. The closure of examinations, or the expiration of the statute of limitations, for state filings may not preclude the state from adjusting the state net operating loss carryforward utilized in a year for which the examinationstatute of limitations is not closed.




168


A reconciliation of the beginning and ending balances of the Company's net unrecognized tax benefits is as follows for the years ended December 31 (in millions):
20202019
Beginning balance$145 $185 
Additions based on tax positions related to the current year
Additions for tax positions of prior years13 
Reductions for tax positions of prior years(1)(37)
Statute of limitations(4)(9)
Settlements(5)
Interest and penalties(5)
Ending balance$153 $145 
 2017 2016
    
Beginning balance$128
 $198
Additions based on tax positions related to the current year6
 7
Additions for tax positions of prior years70
 6
Reductions for tax positions of prior years(18) (11)
Statute of limitations(4) (1)
Settlements(1) (67)
Interest and penalties
 (4)
Ending balance$181
 $128


As of December 31, 20172020 and 2016,2019, the Company had unrecognized tax benefits totaling $158$141 million and $104$139 million,, respectively, that if recognized, would have an impact on the effective tax rate. The remaining unrecognized tax benefits relate to tax positions for which ultimate deductibility is highly certain but for which there is uncertainty as to the timing of such deductibility. Recognition of these tax benefits, other than applicable interest and penalties, would not affect the Company's effective income tax rate.


(12)(13)Employee Benefit Plans


Defined Benefit Plans


Domestic Operations


PacifiCorp, MidAmerican Energy and NV Energy sponsor defined benefit pension plans that cover a majority of all employees of BHE and its domestic energy subsidiaries. These pension plans include noncontributory defined benefit pension plans, supplemental executive retirement plans ("SERP") and a restoration plan for certain executives of NV Energy.plans. PacifiCorp, MidAmerican Energy and NV Energy also provide certain postretirement healthcare and life insurance benefits through various plans to eligible retirees.


On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of DEI and Dominion Questar, exclusive of the Questar Pipeline Group (the "GT&S Transaction"). Defined benefit pension and postretirement benefits provided to the employees of BHE GT&S, which were part of the GT&S Transaction completed on November 1, 2020, are administered in the respective plans sponsored by MidAmerican Energy. Initial pension and postretirement plan liabilities of $81 million and $37 million, respectively, resulted from the GT&S Transaction.

Net Periodic Benefit Cost


For purposes of calculating the expected return on plan assets, a market-related value is used. The market-related value of plan assets is generally calculated by spreading the difference between expected and actual investment returns over a five-year period beginning after the first year in which they occur.


Net periodic benefit cost for the plans included the following components for the years ended December 31 (in millions):
PensionOther Postretirement
202020192018202020192018
Service cost$17 $16 $21 $$$
Interest cost93 111 105 21 27 24 
Expected return on plan assets(140)(154)(164)(34)(40)(41)
Settlement21 
Net amortization32 31 28 (4)(6)(13)
Net periodic benefit cost (credit)$$$11 $(10)$(11)$(21)
169


 Pension Other Postretirement
 2017 2016 2015 2017 2016 2015
            
Service cost$24
 $29
 $33
 $9
 $9
 $11
Interest cost116
 126
 121
 29
 31
 31
Expected return on plan assets(160) (160) (169) (40) (41) (45)
Net amortization25
 46
 53
 (14) (12) (11)
Net periodic benefit cost (credit)$5
 $41
 $38
 $(16) $(13) $(14)


Funded Status


The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, beginning of year$2,656 $2,396 $742 $664 
Employer contributions13 12 
Participant contributions
Actual return on plan assets373 456 40 122 
Settlement(22)
Benefits paid(218)(186)(49)(55)
Plan assets at fair value, end of year$2,824 $2,656 $744 $742 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Plan assets at fair value, beginning of year$2,525
 $2,489
 $666
 $662
Employer contributions64
 78
 5
 2
Participant contributions
 
 10
 10
Actual return on plan assets390
 163
 106
 41
Settlement(15) (11) 
 
Benefits paid(203) (194) (51) (49)
Plan assets at fair value, end of year$2,761
 $2,525
 $736
 $666


The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Benefit obligation, beginning of year$2,878 $2,718 $673 $672 
Service cost17 16 
Interest cost93 111 21 27 
Participant contributions
Actuarial loss226 242 61 12 
Amendment(1)
Settlement(22)
Acquisition81 37 
Benefits paid(218)(186)(49)(55)
Benefit obligation, end of year$3,077 $2,878 $758 $673 
Accumulated benefit obligation, end of year$2,999 $2,867 


170

 Pension Other Postretirement
 2017 2016 2017 2016
        
Benefit obligation, beginning of year$2,952
 $2,934
 $734
 $740
Service cost24
 29
 9
 9
Interest cost116
 126
 29
 31
Participant contributions
 
 10
 10
Actuarial loss (gain)132
 67
 (10) (7)
Amendment
 1
 
 
Settlement(15) (11) 
 
Benefits paid(203) (194) (51) (49)
Benefit obligation, end of year$3,006
 $2,952
 $721
 $734
Accumulated benefit obligation, end of year$2,988
 $2,929
    


The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, end of year$2,824 $2,656 $744 $742 
Benefit obligation, end of year3,077 2,878 758 673 
Funded status$(253)$(222)$(14)$69 
Amounts recognized on the Consolidated Balance Sheets:
Other assets$43 $73 $20 $76 
Other current liabilities(13)(13)
Other long-term liabilities(283)(282)(34)(7)
Amounts recognized$(253)$(222)$(14)$69 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Plan assets at fair value, end of year$2,761
 $2,525
 $736
 $666
Benefit obligation, end of year3,006
 2,952
 721
 734
Funded status$(245) $(427) $15
 $(68)
        
Amounts recognized on the Consolidated Balance Sheets:       
Other assets$66
 $26
 $32
 $19
Other current liabilities(14) (15) 
 
Other long-term liabilities(297) (438) (17) (87)
Amounts recognized$(245) $(427) $15
 $(68)



The SERPs and restoration plan have no plan assets; however, the Company has Rabbi trusts that hold corporate-owned life insurance and other investments to provide funding for the future cash requirements of the SERPs and restoration plan. The cash surrender value of all of the policies included in the Rabbi trusts, net of amounts borrowed against the cash surrender value, plus the fair market value of other Rabbi trust investments, was $272$303 million and $242$252 million as of December 31, 20172020 and 2016,2019, respectively. These assets are not included in the plan assets in the above table, but are reflected in noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets.


The fair value of plan assets, projected benefit obligation and accumulated benefit obligation for (1) pension and other postretirement benefit plans with a projected benefit obligation in excess of the fair value of plan assets and (2) pension plans with an accumulated benefit obligation in excess of the fair value of plan assets as of December 31 are as follows (in millions):
PensionOther Postretirement
2020201920202019
Fair value of plan assets$1,782 $1,939 $417 $439 
Projected benefit obligation$2,069 $2,227 $451 $446 
Fair value of plan assets$1,064 $1,939 
Accumulated benefit obligation$1,341 $2,222 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Fair value of plan assets$2,016
 $1,841
 $126
 $413
        
Projected benefit obligation$2,327
 $2,294
 $143
 $500
        
Accumulated benefit obligation$2,316
 $2,278
    


Unrecognized Amounts


The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
PensionOther Postretirement
2020201920202019
Net loss (gain)$612 $653 $34 $(23)
Prior service credit(1)(2)(9)(14)
Regulatory deferrals
Total$613��$652 $28 $(31)

171


 Pension Other Postretirement
 2017 2016 2017 2016
        
Net loss$649
 $775
 $14
 $88
Prior service credit(3) (7) (37) (52)
Regulatory deferrals(4) (7) 7
 7
Total$642
 $761
 $(16) $43

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 20172020 and 20162019 is as follows (in millions):
Accumulated
Other
RegulatoryRegulatoryComprehensive
AssetLiabilityLossTotal
Pension
Balance, December 31, 2018$730 $$16 $746 
Net (gain) loss arising during the year(38)(33)10 (61)
Net prior service credit arising during the year(2)(2)
Net amortization(31)(31)
Total(69)(33)(94)
Balance, December 31, 2019661 (33)24 652 
Net (gain) loss arising during the year(30)13 10 (7)
Net amortization(31)(1)(32)
Total(61)13 (39)
Balance, December 31, 2020$600 $(20)$33 $613 

Accumulated
Other
RegulatoryRegulatoryComprehensive
AssetLiabilityLossTotal
Other Postretirement
Balance, December 31, 2018$44 $(10)$$35 
Net gain arising during the year(45)(23)(4)(72)
Net amortization— 
Total(40)(22)(4)(66)
Balance, December 31, 2019(32)(3)(31)
Net loss arising during the year36 12 55 
Net amortization(3)— 
Total43 59 
Balance, December 31, 2020$47 $(23)$$28 

172


     Accumulated  
     Other  
 Regulatory Regulatory Comprehensive  
 Asset Liability Loss Total
Pension       
Balance, December 31, 2015$729
 $(1) $13
 $741
Net loss (gain) arising during the year76
 (11) 
 65
Net prior service cost arising during the year1
 
 
 1
Net amortization(45) (1) 
 (46)
Total32
 (12) 
 20
Balance, December 31, 2016761
 (13) 13
 761
Net (gain) loss arising during the year(68) (29) 3
 (94)
Net amortization(28) (1) 4
 (25)
Total(96) (30) 7
 (119)
Balance, December 31, 2017$665
 $(43) $20
 $642


 Regulatory Regulatory  
 Asset Liability Total
Other Postretirement     
Balance, December 31, 2015$49
 $(12) $37
Net gain arising during the year(5) (1) (6)
Net amortization11
 1
 12
Total6
 
 6
Balance, December 31, 201655
 (12) 43
Net gain arising during the year(52) (21) (73)
Net amortization7
 7
 14
Total(45) (14) (59)
Balance, December 31, 2017$10
 $(26) $(16)

The net loss, prior service credit and regulatory deferrals that will be amortized in 2018 into net periodic benefit cost are estimated to be as follows (in millions):
 Net Prior Service Regulatory  
 Loss Credit Deferrals Total
        
Pension$32
 $(1) $(3) $28
Other postretirement1
 (15) 1
 (13)
Total$33
 $(16) $(2) $15

Plan Assumptions


Weighted-average assumptions used to determine benefit obligations and net periodic benefit cost were as follows:

PensionOther Postretirement
202020192018202020192018
Benefit obligations as of December 31:
Discount rate2.60 %3.32 %4.25 %2.59 %3.24 %4.21 %
Rate of compensation increase2.75 %2.75 %2.75 %NANANA
Interest crediting rates for cash balance plan
2018NANA3.38 %NANANA
2019NA3.22 %3.54 %NANANA
20202.44 %2.94 %3.54 %NANANA
20212.25 %2.94 %3.56 %NANANA
20222.25 %3.02 %3.56 %NANANA
20232.65 %3.02 %3.56 %NANANA
Net periodic benefit cost for the years ended December 31:
Discount rate3.32 %4.25 %3.60 %3.24 %4.21 %3.57 %
Expected return on plan assets5.94 %6.48 %6.36 %5.42 %6.39 %6.44 %
Rate of compensation increase2.75 %2.75 %2.75 %NANANA
Interest crediting rate for cash balance plan2.44 %3.22 %3.38 %NANANA
 Pension Other Postretirement
 2017 2016 2015 2017 2016 2015
            
Benefit obligations as of December 31:           
Discount rate3.60% 4.06% 4.43% 3.57% 4.01% 4.33%
Rate of compensation increase2.75% 2.75% 2.75% NA
 NA
 NA
            
Net periodic benefit cost for the years ended December 31:           
Discount rate4.06% 4.43% 4.00% 4.01% 4.33% 3.93%
Expected return on plan assets6.55% 6.78% 6.88% 6.73% 7.03% 7.00%
Rate of compensation increase2.75% 2.75% 2.75% NA
 NA
 NA


In establishing its assumption as to the expected return on plan assets, the Company utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.
20202019
Assumed healthcare cost trend rates as of December 31:
Healthcare cost trend rate assumed for next year6.30 %6.50 %
Rate that the cost trend rate gradually declines to5.00 %5.00 %
Year that the rate reaches the rate it is assumed to remain at20252025
 2017 2016
Assumed healthcare cost trend rates as of December 31:   
Healthcare cost trend rate assumed for next year7.10% 7.40%
Rate that the cost trend rate gradually declines to5.00% 5.00%
Year that the rate reaches the rate it is assumed to remain at2025 2025



A one percentage-point change in assumed healthcare cost trend rates would have the following effects (in millions):
 One Percentage-Point
 Increase Decrease
Increase (decrease) in:   
Total service and interest cost for the year ended December 31, 2017$
 $
Other postretirement benefit obligation as of December 31, 20174
 (4)

Contributions and Benefit Payments


Employer contributions to the pension and other postretirement benefit plans are expected to be $39$13 million and $3$14 million, respectively, during 2018.2021. Funding to the established pension trusts is based upon the actuarially determined costs of the plans and the requirements of the Internal Revenue Code,IRC, the Employee Retirement Income Security Act of 1974 and the Pension Protection Act of 2006, as amended. The Company considers contributing additional amounts from time to time in order to achieve certain funding levels specified under the Pension Protection Act of 2006, as amended. The Company's funding policy forCompany evaluates a variety of factors, including funded status, income tax laws and regulatory requirements, in determining contributions to its other postretirement benefit plans is to generally contribute an amount equal to the net periodic benefit cost.plans.



173


The expected benefit payments to participants in the Company's pension and other postretirement benefit plans for 20182021 through 20222025 and for the five years thereafter are summarized below (in millions):
Projected Benefit
Payments
Other
PensionPostretirement
2021$236 $53 
2022219 54 
2023220 54 
2024211 54 
2025206 52 
2026-2030926 238 
 Projected Benefit
 Payments
   Other
 Pension Postretirement
    
2018$226
 $54
2019224
 55
2020224
 57
2021222
 55
2022214
 54
2023-2027979
 243


Plan Assets


Investment Policy and Asset Allocations


The Company's investment policy for its pension and other postretirement benefit plans is to balance risk and return through a diversified portfolio of debt securities, equity securities and other alternative investments. Maturities for debt securities are managed to targets consistent with prudent risk tolerances. The plans retain outside investment advisors to manage plan investments within the parameters outlined by each plan's Pension and Employee Benefits Plans Administrativethe Berkshire Hathaway Energy Company Investment Committee. The investment portfolio is managed in line with the investment policy with sufficient liquidity to meet near-term benefit payments.



The target allocations (percentage of plan assets) for the Company's pension and other postretirement benefit plan assets are as follows as of December 31, 2017:
2020:
Other
PensionPostretirement
%%
PacifiCorp:
Debt securities(1)
25-3575-83
Equity securities(1)
53-6816-24
Limited partnership interests7-121-3
MidAmerican Energy:Other
PensionPostretirement
%%
PacifiCorp:
Debt securities(1)
33-3850-8033-3760-70
Equity securities(1)
49-6061-65
Limited partnership interests7-121-3
Other0-10-1
MidAmerican Energy:
Debt securities(1)
20-5025-4530-40
Equity securities(1)
60-8045-80
Real estate funds2-80-5
Other0-30-50-5
NV Energy:
Debt securities(1)
53-7740
Equity securities(1)
23-4760

(1)NV Energy:For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.
Debt securities(1)
60-7560-70
Equity securities(1)
25-4030-40



(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.

174


Fair Value Measurements


The following table presents the fair value of plan assets, by major category, for the Company's defined benefit pension plans (in millions):
Input Levels for Fair Value Measurements(1)
Level 1Level 2Total
As of December 31, 2020:
Cash equivalents$$79 $79 
Debt securities:
United States government obligations52 52 
Corporate obligations748 748 
Municipal obligations69 69 
Equity securities:
United States companies224 224 
Total assets in the fair value hierarchy$276 $896 1,172 
Investment funds(2) measured at net asset value
1,521 
Limited partnership interests(3) measured at net asset value
88 
Real estate funds measured at net asset value43 
Total assets measured at fair value$2,824 
As of December 31, 2019:
Cash equivalents$27 $36 $63 
Debt securities:
United States government obligations210 210 
International government obligations
Corporate obligations376 376 
Municipal obligations28 28 
Agency, asset and mortgage-backed obligations115 115 
Equity securities:
United States companies547 548 
International companies136 136 
Investment funds(2)
125 125 
Total assets in the fair value hierarchy$1,045 $561 1,606 
Investment funds(2) measured at net asset value
915 
Limited partnership interests(3) measured at net asset value
93 
Real estate funds measured at net asset value42 
Total assets measured at fair value$2,656 

(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 69% and 31%, respectively, for 2020 and 62% and 38%, respectively, for 2019. Additionally, these funds are invested in United States and international securities of approximately 79% and 21%, respectively, for 2020 and 66% and 34%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.
175

 
Input Levels for Fair Value Measurements(1)
  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Cash equivalents$10
 $76
 $
 $86
Debt securities:       
United States government obligations218
 
 
 218
Corporate obligations
 350
 
 350
Municipal obligations
 16
 
 16
Agency, asset and mortgage-backed obligations
 110
 
 110
Equity securities:       
United States companies622
 
 
 622
International companies136
 
 
 136
Investment funds(2)
83
 20
 
 103
Total assets in the fair value hierarchy$1,069
 $572
 $
 1,641
Investment funds(2) measured at net asset value
      1,019
Limited partnership interests(3) measured at net asset value
      63
Real estate funds measured at net asset value      38
Total assets measured at fair value      $2,761
        
As of December 31, 2016:       
Cash equivalents$4
 $54
 $
 $58
Debt securities:       
United States government obligations161
 
 
 161
International government obligations
 2
 
 2
Corporate obligations
 295
 
 295
Municipal obligations
 20
 
 20
Agency, asset and mortgage-backed obligations
 112
 
 112
Equity securities:       
United States companies583
 
 
 583
International companies117
 
 
 117
Investment funds(2)
146
 
 
 146
Total assets in the fair value hierarchy$1,011
 $483
 $
 1,494
Investment funds(2) measured at net asset value
      920
Limited partnership interests(3) measured at net asset value
      61
Real estate funds measured at net asset value      50
Total assets measured at fair value      $2,525


(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 62% and 38%, respectively, for both 2017 and 2016. Additionally, these funds are invested in United States and international securities of approximately 68% and 32%, respectively, for 2017 and 60% and 40%, respectively, for 2016.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

The following table presents the fair value of plan assets, by major category, for the Company's defined benefit other postretirement plans (in millions):
Input Levels for Fair Value Measurements(1)
Level 1Level 2Total
As of December 31, 2020:
Cash equivalents$20 $$22 
Debt securities:
United States government obligations15 15 
Corporate obligations102 102 
Municipal obligations82 82 
Agency, asset and mortgage-backed obligations47 47 
Equity securities:
United States companies
Investment funds(2)
299 299 
Total assets in the fair value hierarchy$340 $233 573 
Investment funds(2) measured at net asset value
167 
Limited partnership interests(3) measured at net asset value
Total assets measured at fair value$744 
As of December 31, 2019:
Cash equivalents$17 $$18 
Debt securities:
United States government obligations23 23 
Corporate obligations44 44 
Municipal obligations57 57 
Agency, asset and mortgage-backed obligations33 33 
Equity securities:
United States companies151 151 
International companies
Investment funds(2)
236 236 
Total assets in the fair value hierarchy$433 $135 568 
Investment funds(2) measured at net asset value
169 
Limited partnership interests(3) measured at net asset value
Total assets measured at fair value$742 
 
Input Levels for Fair Value Measurements(1)
  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Cash equivalents$11
 $3
 $
 $14
Debt securities:       
United States government obligations20
 
 ��
 20
Corporate obligations
 36
 
 36
Municipal obligations
 46
 
 46
Agency, asset and mortgage-backed obligations
 29
 
 29
Equity securities:       
United States companies185
 
 
 185
International companies8
 
 
 8
Investment funds219
 1
 
 220
Total assets in the fair value hierarchy$443
 $115
 $
 558
Investment funds measured at net asset value      174
Limited partnership interests measured at net asset value      4
Total assets measured at fair value      $736
        
As of December 31, 2016:       
Cash equivalents$18
 $2
 $
 $20
Debt securities:       
United States government obligations19
 
 
 19
Corporate obligations
 29
 
 29
Municipal obligations
 39
 
 39
Agency, asset and mortgage-backed obligations
 25
 
 25
Equity securities:       
United States companies217
 
 
 217
International companies5
 
 
 5
Investment funds(2)
152
 
 
 152
Total assets in the fair value hierarchy$411
 $95
 $
 506
Investment funds(2) measured at net asset value
      156
Limited partnership interests(3) measured at net asset value
      4
Total assets measured at fair value      $666


(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 68% and 32%, respectively, for 2017 and 63% and 37%, respectively, for 2016. Additionally, these funds are invested in United States and international securities of approximately 73% and 27%, respectively, for 2017 and 72% and 28%, respectively, for 2016.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 40% and 60%, respectively, for 2020 and 58% and 42%, respectively, for 2019. Additionally, these funds are invested in United States and international securities of approximately 79% and 21%, respectively, for 2020 and 75% and 25%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

For level 1 investments, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. For level 2 investments, the fair value is determined using pricing models based on observable market inputs. Shares of mutual funds not registered under the Securities Act of 1933, private equity limited partnership interests, common and commingled trust funds and investment entities are reported at fair value based on the net asset value per unit, which is used for expedience purposes. A fund's net asset value is based on the fair value of the underlying assets held by the fund less its liabilities.



176


Foreign Operations


Certain wholly-owned subsidiaries of Northern Powergrid participate in the Northern Powergrid group of the United Kingdom industry-wide Electricity Supply Pension Scheme (the "UK Plan"), which provides pension and other related defined benefits, based on final pensionable pay, to the majority of the employees of Northern Powergrid. The UK Plan is closed to employees hired after July 23, 1997. Employees hired after that date are covered by a defined contribution plan sponsored by a wholly-owned subsidiary of Northern Powergrid.


Net Periodic Benefit Cost


For purposes of calculating the expected return on pension plan assets, a market-related value is used. The market-related value of plan assets is calculated by spreadingincluding the difference between expected and actual investment returns over a five-year period beginning after the first year in which they occur.


Net periodic benefit cost for the UK Plan included the following components for the years ended December 31 (in millions):
2017 2016 2015

202020192018
     
Service cost$23
 $20
 $24
Service cost$16 $16 $19 
Interest cost58
 72
 79
Interest cost40 49 56 
Expected return on plan assets(100) (110) (116)Expected return on plan assets(101)(100)(101)
Settlement31
 
 
Settlement17 26 44 
Net amortization63
 44
 62
Net amortization43 46 45 
Net periodic benefit cost$75
 $26
 $49
Net periodic benefit cost$15 $37 $63 
    
Funded Status


The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):
20202019
Plan assets at fair value, beginning of year$2,151 $1,989 
Employer contributions56 56 
Participant contributions
Actual return on plan assets181 194 
Settlement(63)(99)
Benefits paid(67)(71)
Foreign currency exchange rate changes75 81 
Plan assets at fair value, end of year$2,334 $2,151 


177

 2017 2016
    
Plan assets at fair value, beginning of year$2,169
 $2,276
Employer contributions58
 55
Participant contributions1
 1
Actual return on plan assets145
 349
Settlement(144) 
Benefits paid(68) (115)
Foreign currency exchange rate changes207
 (397)
Plan assets at fair value, end of year$2,368
 $2,169



The following table is a reconciliation of the benefit obligation for the years ended December 31 (in millions):
20202019
Benefit obligation, beginning of year$2,019 $1,833 
Service cost16 16 
Interest cost40 49 
Participant contributions
Actuarial loss188 175 
Settlement(63)(99)
Benefits paid(67)(71)
Foreign currency exchange rate changes71 115 
Benefit obligation, end of year$2,205 $2,019 
Accumulated benefit obligation, end of year$1,963 $1,786 
 2017 2016
    
Benefit obligation, beginning of year$2,125
 $2,142
Service cost23
 20
Interest cost58
 72
Participant contributions1
 1
Actuarial loss (gain)(4) 387
Settlement(131) 
Benefits paid(68) (115)
Foreign currency exchange rate changes197
 (382)
Benefit obligation, end of year$2,201
 $2,125
Accumulated benefit obligation, end of year$1,933
 $1,858


The funded status of the UK Plan and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):
20202019
Plan assets at fair value, end of year$2,334 $2,151 
Benefit obligation, end of year2,205 2,019 
Funded status$129 $132 
Amounts recognized on the Consolidated Balance Sheets:
Other assets$129 $132 
 2017 2016
    
Plan assets at fair value, end of year$2,368
 $2,169
Benefit obligation, end of year2,201
 2,125
Funded status$167
 $44
    
Amounts recognized on the Consolidated Balance Sheets:   
Other assets$167
 $44


Unrecognized Amounts


The portion of the funded status of the UK Plan not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
20202019
Net loss$612 $543 
Prior service cost
Total$618 $549 
 2017 2016
    
Net loss$510
 $590


A reconciliation of the amounts not yet recognized as components of net periodic benefit cost, which are included in accumulated other comprehensive loss on the Consolidated Balance Sheets, for the years ended December 31 is as follows (in millions):
20202019
Balance, beginning of year$549 $480 
Net loss arising during the year108 81 
Settlement(17)(26)
Net amortization(43)(46)
Foreign currency exchange rate changes21 60 
Total69 69 
Balance, end of year$618 $549 
178


 2017 2016
    
Balance, beginning of year$590
 $592
Net (gain) loss arising during the year(50) 148
Settlement(17) 
Net amortization(63) (44)
Foreign currency exchange rate changes50
 (106)
Total(80) (2)
Balance, end of year$510
 $590

The net loss that will be amortized from accumulated other comprehensive loss in 2018 into net periodic benefit cost is estimated to be $60 million.

Plan Assumptions

Assumptions used to determine benefit obligations and net periodic benefit cost were as follows:
2017 2016 2015202020192018
     
Benefit obligations as of December 31:     Benefit obligations as of December 31:
Discount rate2.60% 2.70% 3.70%Discount rate1.40 %2.10 %2.90 %
Rate of compensation increase3.45% 3.00% 2.90%Rate of compensation increase3.05 %3.30 %3.55 %
Rate of future price inflation2.95% 3.00% 2.90%Rate of future price inflation2.55 %2.80 %3.05 %
     
Net periodic benefit cost for the years ended December 31:     Net periodic benefit cost for the years ended December 31:
Discount rate2.70% 3.70% 3.60%Discount rate2.10 %2.90 %2.60 %
Expected return on plan assets5.00% 5.60% 5.60%Expected return on plan assets5.00 %5.10 %4.90 %
Rate of compensation increase3.00% 2.90% 2.80%Rate of compensation increase3.30 %3.55 %3.45 %
Rate of future price inflation3.00% 2.90% 2.80%Rate of future price inflation2.80 %3.05 %2.95 %
    
Contributions and Benefit Payments


Employer contributions to the UK Plan are expected to be £45£50 million during 2018.2021. The expected benefit payments to participants in the UK Plan for 20182021 through 20222025 and for the five years thereafter, excluding lump sum settlement elections and using the foreign currency exchange rate as of December 31, 2017,2020, are summarized below (in millions):
2018$72
201974
202075
202177
202279
2023-2027427
2021$74 
202275 
202377 
202479 
202581 
2026-2030431 
    
Plan Assets


Investment Policy and Asset Allocations


The investment policy for the UK Plan is to balance risk and return through a diversified portfolio of debt securities, equity securities, real estate and other asset classes. Maturities for debt securities are managed to targets consistent with prudent risk tolerances. The UK Plan retains outside investment advisors to manage plan investments within the parameters set by the trustees of the UK Plan in consultation with Northern Powergrid. The investment portfolio is managed in line with the investment policy with sufficient liquidity to meet near-term benefit payments. The return on assets assumption is based on a weighted-average of the expected historical performance for the types of assets in which the UK Plan invests.


The target allocations (percentage of plan assets) for the UK Plan assets are as follows as of December 31, 2017:
2020:
%
Debt securities(1)
50-5560-70
Equity securities(1)
35-4010-20
Real estate funds and other5-1515-25

(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds have been allocated based on the underlying investments in debt and equity securities.



(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds have been allocated based on the underlying investments in debt and equity securities.


179


Fair Value Measurements


The following table presents the fair value of the UK Plan assets, by major category (in millions):
Input Levels for Fair Value Measurements(1)
Level 1Level 2Level 3Total
As of December 31, 2020:
Cash equivalents$$49 $$54 
Debt securities:
United Kingdom government obligations1,102 1,102 
Equity securities:
Investment funds(2)
833 833 
Real estate funds237 237 
Total$1,107 $882 $237 2,226 
Investment funds(2) measured at net asset value
108 
Total assets measured at fair value$2,334 
As of December 31, 2019:
Cash equivalents$$24 $$27 
Debt securities:
United Kingdom government obligations960 960 
Equity securities:
Investment funds(2)
818 818 
Real estate funds243 243 
Total$963 $842 $243 2,048 
Investment funds(2) measured at net asset value
103 
Total assets measured at fair value$2,151 
 
Input Levels for Fair Value Measurements(1)
  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Cash equivalents$4
 $30
 $
 $34
Debt securities:       
United Kingdom government obligations870
 
 
 870
Equity securities:       
Investment funds(2)

 1,027
 
 1,027
Real estate funds
 
 230
 230
Total$874
 $1,057
 $230
 2,161
Investment funds(2) measured at net asset value
      207
Total assets measured at fair value      $2,368
        
As of December 31, 2016:       
Cash equivalents$4
 $83
 $
 $87
Debt securities:       
United Kingdom government obligations718
 
 
 718
Equity securities:       
Investment funds(2)

 1,095
 
 1,095
Real estate funds
 
 105
 105
Total$722
 $1,178
 $105
 2,005
Investment funds(2) measured at net asset value
      164
Total assets measured at fair value      $2,169


(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 21% and 79%, respectively, for 2017 and 44% and 56%, respectively, for 2016.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 40% and 60%, respectively, for 2020 and 38% and 62%, respectively, for 2019.

The fair value of the UK Plan's assets are determined similar to the plan assets of the domestic plans as previously discussed.


The following table reconciles the beginning and ending balances of the UK Plan assets measured at fair valueusing significant Level 3 inputs for the years ended December 31 (in millions):
Real Estate Funds
202020192018
Beginning balance$243 $239 $230 
Actual return on plan assets still held at period end(13)(5)23 
Foreign currency exchange rate changes(14)
Ending balance$237 $243 $239 

180

 Real Estate Funds
 2017 2016 2015
     
Beginning balance$105
 $204
 $199
Actual return on plan assets still held at period end6
 10
 18
Purchases (sales)104
 (80) 
Foreign currency exchange rate changes15
 (29) (13)
Ending balance$230
 $105
 $204



Defined Contribution Plans


The Company sponsors various defined contribution plans covering substantially all employees. The Company's contributions vary depending on the plan, but matching contributions are based on each participant's level of contribution, and certain participants receive contributions based on eligible pre-tax annual compensation. Contributions cannot exceed the maximum allowable for tax purposes. The Company's contributions to these plans were $103$127 million,, $102 $115 million and $90$112 million for the years ended December 31, 2017, 20162020, 2019 and 2015,2018, respectively.


(13)
Asset Retirement Obligations

(14)Asset Retirement Obligations

The Company estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.


The Company does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain generation, transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Consolidated Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. These accruals totaled $2.3 billion and $2.2$2.4 billion as of December 31, 20172020 and 2016, respectively.2019.


The following table presents the Company's ARO liabilities by asset type as of December 31 (in millions):
20202019
Fossil fuel facilities$529 $623 
Quad Cities Station376 358 
Wind generating facilities273 211 
Offshore pipeline facilities16 15 
Solar generating facilities24 21 
Other123 44 
Total asset retirement obligations$1,341 $1,272 
Quad Cities Station nuclear decommissioning trust funds$676 $599 
 2017 2016
    
Fossil fuel facilities$380
 $404
Quad Cities Station342
 343
Wind generating facilities138
 124
Offshore pipeline facilities32
 33
Solar generating facilities19
 12
Other43
 38
Total asset retirement obligations$954
 $954
    
Quad Cities Station nuclear decommissioning trust funds$515
 $460


The following table reconciles the beginning and ending balances of the Company's ARO liabilities for the years ended December 31 (in millions):
20202019
Beginning balance$1,272 $985 
Change in estimated costs46 257 
Acquisitions122 
Additions51 43 
Retirements(201)(61)
Accretion51 48 
Ending balance$1,341 $1,272 
Reflected as:
Other current liabilities$184 $167 
Other long-term liabilities1,157 1,105 
Total ARO liability$1,341 $1,272 

181

 2017 2016
    
Beginning balance$954
 $921
Change in estimated costs(18) 33
Additions21
 25
Retirements(45) (63)
Accretion42
 38
Ending balance$954
 $954
    
Reflected as:   
Other current liabilities$60
 $98
Other long-term liabilities894
 856
Total ARO liability$954
 $954



The Nuclear Regulatory Commission regulates the decommissioning of nuclear power plants, which includes the planning and funding for the decommissioning. In accordance with these regulations, MidAmerican Energy submits a biennial report to the Nuclear Regulatory Commission providing reasonable assurance that funds will be available to pay for its share of the Quad Cities Station decommissioning.


Certain of the Company's decommissioning and reclamation obligations relate to jointly owned facilities and mine sites, and as such, each subsidiary is committed to pay a proportionate share of the decommissioning or reclamation costs. In the event of a default by any of the other joint participants, the respective subsidiary may be obligated to absorb, directly or by paying additional sums to the entity, a proportionate share of the defaulting party's liability. The Company's estimated share of the decommissioning and reclamation obligations are primarily recorded as ARO liabilities.


The changesFollowing groundwater testing at its coal combustion residuals ("CCR") surface impoundments, MidAmerican Energy discontinued sending CCR to surface impoundments and initiated analysis of additional actions to be taken. As a result of that analysis, MidAmerican Energy is removing all CCR material located below the water table and capping the material in estimated costssuch facilities, which is a more extensive closure activity than previously assumed. In 2019, MidAmerican Energy increased the AROs for 2017 and 2016 were primarily due to new decommissioning studies conductedits fossil-fueled generating facilities by the operator of the Quad Cities Station that changed the estimated amount and timing of cash flows.

(14)Risk Management and Hedging Activities

The Company is exposed$237 million related to the impactcost of market fluctuations in commodity prices, interest rates and foreign currency exchange rates. The Company is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk primarily through BHE's ownership of PacifiCorp, MidAmerican Energy, Nevada Power and Sierra Pacific (collectively, the "Utilities") as they have an obligation to serve retail customer load in their regulated service territories. The Company also provides nonregulated retail electricity and natural gas services in competitive markets. The Utilities' load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage and transmission and transportation constraints. Interest rate risk exists on variable-rate short- and long-term debt, future debt issuances and mortgage commitments. Additionally, the Company is exposed to foreign currency exchange rate risk from its business operations and investments in Great Britain and Canada. The Company does not engage in a material amount of proprietary trading activities.

Each of the Company's business platforms has established a risk management process that is designed to identify, assess, manage, mitigate, monitor and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, the Company uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. The Company manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, the Company may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, forward sale commitments or mortgage interest rate lock commitments, to mitigate the Company's exposure to interest rate risk. The Company does not hedge all of its commodity price, interest rate and foreign currency exchange rate risks, thereby exposing the unhedged portion to changes in market prices.

There have been no significant changes in the Company's accounting policies related to derivatives. Refer to Notes 2, 6 and 15 for additional information on derivative contracts.


The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of the Company's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basisthis closure activity. Closure activity on the Consolidated Balance Sheets (in millions):six existing surface impoundments is estimated to extend through 2023.

 Other   Other Other  
 Current Other Current Long-term  
 Assets Assets Liabilities Liabilities Total
As of December 31, 2017:         
Not designated as hedging contracts:         
Commodity assets(1)
$29
 $92
 $6
 $4
 $131
Commodity liabilities(1)
(6) 
 (64) (93) (163)
Interest rate assets16
 
 
 
 16
Interest rate liabilities
 
 (1) (7) (8)
Total39
 92
 (59) (96) (24)
          
Designated as hedging contracts:         
Commodity assets4
 9
 2
 1
 16
Commodity liabilities(3) (7) (3) (4) (17)
Interest rate assets
 8
 
 
 8
Interest rate liabilities
 
 
 
 
Total1
 10
 (1) (3) 7
          
Total derivatives40
 102
 (60) (99) (17)
Cash collateral receivable
 
 18
 58
 76
Total derivatives - net basis$40
 $102
 $(42) $(41) $59

As of December 31, 2016:         
Not designated as hedging contracts:         
Commodity assets(1)
$42
 $86
 $5
 $2
 $135
Commodity liabilities(1)
(10) 
 (46) (150) (206)
Interest rate assets15
 
 
 
 15
Interest rate liabilities
 
 (4) (6) (10)
Total47
 86
 (45) (154) (66)
          
Designated as hedging contracts:         
Commodity assets1
 
 2
 3
 6
Commodity liabilities
 
 (14) (8) (22)
Interest rate assets
 8
 
 
 8
Interest rate liabilities
 
 (3) 
 (3)
Total1
 8
 (15) (5) (11)
          
Total derivatives48
 94
 (60) (159) (77)
Cash collateral receivable
 
 13
 61
 74
Total derivatives - net basis$48
 $94
 $(47) $(98) $(3)


(1)
The Company's commodity derivatives not designated as hedging contracts are generally included in regulated rates, and as of December 31, 2017 and 2016, a net regulatory asset of $119 million and $148 million, respectively, was recorded related to the net derivative liability of $32 million and $71 million, respectively. The difference between the net regulatory asset and the net derivative liability relates primarily to a power purchase agreement derivative at BHE Renewables.

Not Designated as Hedging Contracts

The following table reconciles the beginning and ending balances of the Company's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings for the years ended December 31 (in millions):
 Commodity Derivatives
 2017 2016 2015
      
Beginning balance$148
 $250
 $223
Changes in fair value recognized in net regulatory assets53
 (30) 128
Net gains (losses) reclassified to operating revenue10
 (5) 1
Net losses reclassified to cost of sales(92) (67) (102)
Ending balance$119
 $148
 $250

Designated as Hedging Contracts

The Company uses commodity derivative contracts accounted for as cash flow hedges to hedge electricity and natural gas commodity prices for delivery to nonregulated customers and other transactions. Certain commodity derivative contracts have settled and the fair value at the date of settlement remains in AOCI and is recognized in earnings when the forecasted transactions impact earnings. The following table reconciles the beginning and ending balances of the Company's AOCI (pre-tax) and summarizes pre-tax gains and losses on commodity derivative contracts designated and qualifying as cash flow hedges recognized in OCI, as well as amounts reclassified to earnings for the years ended December 31 (in millions):
 Commodity Derivatives
 2017 2016 2015
      
Beginning balance$16
 $46
 $32
Changes in fair value recognized in OCI15
 26
 52
Net gains reclassified to operating revenue1
 1
 9
Net losses reclassified to cost of sales(32) (57) (47)
Ending balance$
 $16
 $46

Realized gains and losses on hedges and hedge ineffectiveness are recognized in income as operating revenue, cost of sales, operating expense or interest expense depending upon the nature of the item being hedged. For the years ended December 31, 2017, 2016 and 2015, hedge ineffectiveness was insignificant. As of December 31, 2017, the Company had cash flow hedges with expiration dates extending through June 2026.


Derivative Contract Volumes

The following table summarizes the net notional amounts of outstanding derivative contracts with fixed price terms that comprise the mark-to-market values as of December 31 (in millions):
 Unit of    
 Measure 2017 2016
Electricity purchasesMegawatt hours 4
 5
Natural gas purchasesDecatherms 310
 271
Fuel purchasesGallons 
 11
Interest rate swapsUS$ 679
 714
Interest rate swaps£ 136
 
Mortgage commitments, netUS$ (422) (309)

Credit Risk

The Utilities are exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent the Utilities' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, the Utilities analyze the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, the Utilities enter into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, the Utilities exercise rights under these arrangements, including calling on the counterparty's credit support arrangement.

Collateral and Contingent Features

In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017, the applicable credit ratings from the three recognized credit rating agencies were investment grade.

The aggregate fair value of the Company's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $145 million and $190 million as of December 31, 2017 and 2016, respectively, for which the Company had posted collateral of $74 million and $69 million, respectively, in the form of cash deposits. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggered as of December 31, 2017 and 2016, the Company would have been required to post $56 million and $110 million, respectively, of additional collateral. The Company's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors.


(15)Fair Value Measurements


The carrying value of the Company's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. The Company has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:


Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.
Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).
Level 3 - Unobservable inputs reflect the Company's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. The Company develops these inputs based on the best information available, including its own data.

182


The following table presents the Company's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):
Input Levels for Fair Value Measurements
Level 1Level 2Level 3
Other(1)
Total
As of December 31, 2020:
Assets:
Commodity derivatives$$73 $135 $(21)$188 
Foreign currency exchange rate derivatives— 20 — — 20 
Interest rate derivatives62 — 62 
Mortgage loans held for sale2,001 — 2,001 
Money market mutual funds(2)
873 — 873 
Debt securities:
United States government obligations200 — 200 
International government obligations— 
Corporate obligations73 — 73 
Municipal obligations— 
Agency, asset and mortgage-backed obligations— 
Equity securities:
United States companies381 — 381 
International companies5,906 — 5,906 
Investment funds201 — 201 
$7,562 $2,180 $197 $(21)$9,918 
Liabilities:
Commodity derivatives$(1)$(90)$(19)$56 $(54)
Foreign currency exchange rate derivatives— (2)— — (2)
Interest rate derivatives(5)(60)— (65)
$(6)$(152)$(19)$56 $(121)

183


Input Levels for Fair Value Measurements    
Level 1 Level 2 Level 3 
Other(1)
 Total
As of December 31, 2017:         
As of December 31, 2019:As of December 31, 2019:
Assets:         Assets:
Commodity derivatives$1
 $42
 $104
 $(29) $118
Commodity derivatives$$45 $108 $(24)$129 
Interest rate derivatives
 15
 9
 
 24
Interest rate derivatives14 — 16 
Mortgage loans held for sale
 465
 
 
 465
Mortgage loans held for sale1,039 — 1,039 
Money market mutual funds(2)
685
 
 
 
 685
Money market mutual funds(2)
824 — 824 
Debt securities:         Debt securities:
United States government obligations176
 
 
 
 176
United States government obligations189 — 189 
International government obligations
 5
 
 
 5
International government obligations— 
Corporate obligations
 36
 
 
 36
Corporate obligations58 — 58 
Municipal obligations
 2
 
 
 2
Municipal obligations— 
Agency, asset and mortgage-backed obligationsAgency, asset and mortgage-backed obligations— 
Equity securities:         Equity securities:
United States companies288
 
 
 
 288
United States companies336 — 336 
International companies1,968
 
 
 
 1,968
International companies1,131 — 1,131 
Investment funds178
 
 
 
 178
Investment funds169 — 169 
$3,296
 $565
 $113
 $(29) $3,945
$2,649 $1,150 $122 $(24)$3,897 
Liabilities:         Liabilities:
Commodity derivatives$(3) $(167) $(10) $105
 $(75)Commodity derivatives$(4)$(143)$(11)$103 $(55)
Interest rate derivatives
 (8) 
 
 (8)Interest rate derivatives(2)(19)— (21)
$(3) $(175) $(10) $105
 $(83)$(6)$(162)$(11)$103 $(76)



(1)Represents netting under master netting arrangements and a net cash collateral receivable of $35 million and $79 million as of December 31, 2020 and 2019, respectively.
(2)Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
As of December 31, 2016:         
Assets:         
Commodity derivatives$5
 $49
 $87
 $(22) $119
Interest rate derivatives
 16
 7
 
 23
Mortgage loans held for sale
 359
 
 
 359
Money market mutual funds(2)
586
 
 
 
 586
Debt securities:         
United States government obligations161
 
 
 
 161
International government obligations
 3
 
 
 3
Corporate obligations
 36
 
 
 36
Municipal obligations
 2
 
 
 2
Agency, asset and mortgage-backed obligations
 2
 
 
 2
Equity securities:         
United States companies250
 
 
 
 250
International companies1,190
 
 
 
 1,190
Investment funds147
 
 
 
 147
 $2,339
 $467
 $94
 $(22) $2,878
Liabilities:         
Commodity derivatives$(2) $(199) $(27) $96
 $(132)
Interest rate derivatives(1) (11) (1) 
 (13)
 $(3) $(210) $(28) $96
 $(145)

(1)
Represents netting under master netting arrangements and a net cash collateral receivable of $76 million and $74 million as of December 31, 2017 and 2016, respectively.
(2)Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.


Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which the Company transacts. When quoted prices for identical contracts are not available, the Company uses forward price curves. Forward price curves represent the Company's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. The Company bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by the Company. Market price quotations are generally readily obtainable for the applicable term of the Company's outstanding derivative contracts; therefore, the Company's forward price curves reflect observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, the Company uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 14 for further discussion regarding the Company's risk management and hedging activities.


The Company's mortgage loans held for sale are valued based on independent quoted market prices, where available, or the prices of other mortgage whole loans with similar characteristics. As necessary, these prices are adjusted for typical securitization activities, including servicing value, portfolio composition, market conditions and liquidity.


The Company's investments in money market mutual funds and debt and equity securities are stated at fair value and are primarily accounted for as available-for-sale securities.value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics.

184


The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs for the years ended December 31 (in millions):
Commodity DerivativesInterest Rate Derivatives
202020192018202020192018
Beginning balance$97 $99 $94 $14 $10 $
Changes included in earnings(10)10 772 479 181 
Changes in fair value recognized in OCI(1)
Changes in fair value recognized in net regulatory assets(17)(26)
Purchases
Settlements41 (4)(724)(475)(180)
Ending balance$116 $97 $99 $62 $14 $10 
 Commodity Derivatives Interest Rate Derivatives Auction Rate Securities
 2017 2016 2015 2017 2016 2015 2017 2016 2015
                  
Beginning balance$60
 $47
 $51
 $6
 $4
 $
 $
 $44
 $45
Changes included in earnings23
 8
 19
 147
 121
 87
 
 5
 
Changes in fair value recognized in OCI(3) (2) (7) 
 
 
 
 8
 (1)
Changes in fair value recognized in net regulatory assets(1) (11) (19) 
 
 
 
 
 
Purchases1
 1
 1
 4
 
 
 
 
 
Redemptions
 
 
 
 
 
 
 (57) 
Settlements14
 17
 2
 (148) (119) (86) 
 
 
Transfers from Level 2
 
 
 
 
 3
 
 
 
Ending balance$94
 $60
 $47
 $9
 $6
 $4
 $
 $
 $44


The Company's long-term debt is carried at cost, including fair value adjustments and unamortized premiums, discounts and debt issuance costs as applicable, on the Consolidated Financial Statements. The fair value of the Company's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of the Company's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of the Company's long-term debt as of December 31 (in millions):
20202019
CarryingFairCarryingFair
ValueValueValueValue
Long-term debt$49,866 $60,633 $39,353 $46,004 

 2017 2016
 Carrying Fair Carrying Fair
 Value Value Value Value
        
Long-term debt$35,193
 $40,522
 $36,116
 $40,718

(16)Commitments and Contingencies


Commitments


The Company has the following firm commitments that are not reflected on the Consolidated Balance Sheet. Minimum payments as of December 31, 20172020 are as follows (in millions):
2026 and
20212022202320242025ThereafterTotal
Contract type:
Fuel, capacity and transmission contract commitments$2,122 $1,559 $1,307 $1,285 $1,047 $12,985 $20,305 
Construction commitments783 372 148 1,307 
Easements72 74 74 73 73 2,229 2,595 
Maintenance, service and other contracts413 366 313 257 210 1,435 2,994 
$3,390 $2,371 $1,842 $1,615 $1,330 $16,653 $27,201 
            2023 and  
  2018 2019 2020 2021 2022 Thereafter Total
Contract type:              
Fuel, capacity and transmission contract commitments $2,098
 $1,637
 $1,435
 $1,210
 $1,055
 $10,044
 $17,479
Construction commitments 1,120
 57
 5
 
 
 
 1,182
Operating leases and easements 180
 157
 141
 121
 111
 1,297
 2,007
Maintenance, service and other contracts 246
 249
 238
 231
 253
 1,055
 2,272
  $3,644
 $2,100
 $1,819
 $1,562
 $1,419
 $12,396
 $22,940



Fuel, Capacity and Transmission Contract Commitments


The Utilities have fuel supply and related transportation and lime contracts for their coal- and natural gas-fueled generating facilities. The Utilities expect to supplement these contracts with additional contracts and spot market purchases to fulfill their future fossil fuel needs. The Utilities acquire a portion of their electricity through long-term purchases and exchange agreements. The Utilities have several power purchase agreements with renewable generating facilities that are not included in the table above as the payments are based on the amount of energy generated and there are no minimum payments. The Utilities also have contracts for the right to transmit electricity over other entities' transmission lines to facilitate delivery to their customers.

185


MidAmerican Energy has long-term rail transportation contracts with BNSF Railway Company ("BNSF"), an affiliate company, and Union Pacific Railroad Company for the transportation of coal to all of the MidAmerican Energy-operated coal-fueled generating facilities. For the years ended December 31, 2017, 20162020, 2019 and 2015, $1092018, $90 million, $137$123 million and $185$111 million, respectively, were incurred for coal transportation services, the majority of which was related to the BNSF agreement.


Construction Commitments


The Company's firm construction commitments reflected in the table above include the following major construction projects:
MidAmerican Energy's construction of wind-powered generating facilities and the last of the four Multi-Value Projects approved by the Midcontinent Independent System Operator, Inc. for high voltage transmission lines in Iowa and Illinois in 2018.
ALP's investments in directly assigned transmission projects from the AESO.
PacifiCorp's costs associated with certain generating plant, transmission and distribution projects.

MidAmerican Energy's firm construction commitments primarily consisting of contracts for the repowering and construction of wind-powered generating facilities.
Operating LeasesNevada Power's firm construction commitment consisting of costs associated with the planned Dry Lake generating facility, a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage that will be developed in Clark County, Nevada and certain other generating plant projects.
AltaLink's investments in directly assigned transmission projects from the AESO.

Easements


The Company has non-cancelable operating leases primarily for office equipment, office space, certain operating facilities, land and rail cars. These leases generally require the Company to pay for insurance, taxes and maintenance applicable to the leased property. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. The Company also has non-cancelable easements for land on which certain of its assets, primarily wind-powered generating facilities, are located. Rent expense on non-cancelable operating leases and easements totaled $156 million for both 2017 and 2016 and $146 million for 2015.


Maintenance, Service and Other Contracts


The Company has entered into service agreements related to its nonregulated solar and wind-powered projects with third parties to operate and maintain the projects under fixed-fee operating and maintenance agreements. Additionally, thethe Company has various non-cancelable maintenance, service and other contracts primarily related to turbine and equipment maintenance and various other service agreements.


Legal Matters


The Company is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. The Company does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.


California and Oregon 2020 Wildfires

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and Northern California (the "2020 Wildfires"). The wildfires spread across certain parts of PacifiCorp's service territory and surrounding areas across multiples counties in Oregon and California, including Siskiyou County, California; Jackson County, Oregon; Douglas County, Oregon; Marion County, Oregon; Lincoln County, Oregon; and Klamath County, Oregon burning over 500,000 acres in aggregate. Third party reports for these wildfires indicate over 2,000 structures, including residences, destroyed; several structures damaged; multiple individuals injured; and several fatalities. Fire suppression costs estimated by various agencies total approximately $150 million. Investigations into the cause and origin of each wildfire are complex and ongoing and are being conducted by various entities, including the United States Forest Service, the California Public Utilities Commission, the Oregon Department of Forestry, the Oregon Department of Justice, PacifiCorp and various experts engaged by PacifiCorp.

NaN lawsuits have been filed in Oregon and California, including a putative class action complaint in Oregon, on behalf of citizens and businesses who suffered damages from fires allegedly caused by PacifiCorp. The final determinations of liability, however, will only be made following comprehensive investigations and litigation processes.


186


In California, under inverse condemnation, courts have held that investor-owned utilities can be liable for real and personal property damages without the utility being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover reasonable attorney fees and costs. In both Oregon and California, PacifiCorp has equipment in areas accessed through special use permits, easements or similar agreements that may contain provisions requiring it to pay for damages caused by its equipment regardless of fault. Even if inverse condemnation or other provisions do not apply, PacifiCorp could nevertheless be found liable for all damages proximately caused by negligence, including property and natural resource damage; fire suppression costs; personal injury and loss of life damages; and interest.

PacifiCorp has accrued $136 million as its best estimate of the potential losses net of expected insurance recoveries associated with the 2020 Wildfires that are considered probable of being incurred. These accruals include estimated losses for fire suppression costs, property damage, personal injury damages and loss of life damages. It is reasonably possible that PacifiCorp will incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred due to the number of properties and parties involved and the lack of specific claims for all potential claimants. To the extent losses beyond the amounts accrued are incurred, additional insurance coverage is expected to be available to cover at least a portion of the losses.

Environmental Laws and Regulations


The Company is subject to federal, state, local and foreign laws and regulations regarding climate change, renewable portfolio standards, air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact the Company's current and future operations. The Company believes it is in material compliance with all applicable laws and regulations.



Hydroelectric Relicensing


PacifiCorp's Klamath hydroelectric systemPacifiCorp is currently operating under annual licenses witha party to the FERC. In February 2010, PacifiCorp, the United States Department of the Interior, the United States Department of Commerce, the state of California, the state of Oregon and various other governmental and non-governmental settlement parties signed the2016 amended Klamath Hydroelectric Settlement Agreement ("KHSA").

Congress failed, which is intended to pass legislation neededresolve disputes surrounding PacifiCorp's efforts to implementrelicense the original KHSA. On April 6, 2016,Klamath Hydroelectric Project. The KHSA establishes a process for PacifiCorp, the states of California and Oregon and the United States Departments of the Interior and CommerceCalifornia ("States") and other stakeholders executed an amendment to the KHSA. Consistentassess whether dam removal can occur consistent with the termssettlement's terms. For PacifiCorp, the key elements of the amended KHSA, on September 23, 2016, PacifiCorpsettlement include: (1) a contribution from PacifiCorp's Oregon and California customers capped at $200 million plus $250 million in California bond funds; (2) complete indemnification from harms associated with dam removal; (3) transfer of the Federal Energy Regulatory Commission ("FERC") license to a third-party dam removal entity, the Klamath River Renewal Corporation ("KRRC"), who would conduct dam removal; and (4) ability for PacifiCorp to operate the facilities for the benefit of customers until dam removal commences.

In September 2016, the KRRC and PacifiCorp filed a private, independent nonprofit 501(c)(3) organization formed by signatories of the amended KSHA, jointly filed anjoint application with the FERC to transfer the license for the four mainstem Klamath River hydroelectric generating facilitiesdams from PacifiCorp to the KRRC. Also on September 23, 2016, the KRRC filed an application with theThe FERC to surrender the license and decommission the facilities. The KRRC's license surrender application included a request for the FERC to refrain from acting on the surrender application until after theapproved partial transfer of the Klamath license in a July 2020 order, subject to the KRRC is effective.

condition that PacifiCorp remains co-licensee. Under the amended KHSA, PacifiCorp did not agree to remain co-licensee during the surrender and removal process given concerns about liability protections for PacifiCorp and its customers are protected from uncapped dam removal costscustomers. In November 2020, PacifiCorp entered a memorandum of agreement (the "MOA") with the KRRC, the Karuk Tribe, the Yurok Tribe and liabilities.the States to continue implementation of the KHSA. The agreement required the States, PacifiCorp and KRRC must indemnifyto file a new license transfer application by January 16, 2021 to remove PacifiCorp from liabilities associated with dam removal. The amended KHSA also limits PacifiCorp's contribution to facilities removal costs to no more than $200 million,the license for the Klamath Hydroelectric Project and add the States and KRRC as co-licensees for the purposes of which up to $184 million would be collected from PacifiCorp's Oregon customerssurrender. On January 13, 2021, the new license transfer application was filed with the remainder to be collected from PacifiCorp's California customers. California voters approved a water bond measureFERC, notifying it that PacifiCorp and the KRRC are not accepting co-licensee status under FERC's July 2020 order, and instead are seeking the license transfer outcome described in November 2014 from which the state of California's contribution towards facilities removal costs are being drawn.new license transfer application. In accordance with this bond measure,addition, the MOA provides for additional contingency funding of up$45 million, equally split between PacifiCorp and the States, and for PacifiCorp and the States to $250 million for facilities removal costs was includedequally share in any additional cost overruns in the California state budget in 2016, with the funding effective for at least five years. If facilitiesunlikely event that dam removal costs exceed the combined$450 million in funding that will be available from PacifiCorp's Oregon and California customers andto ensure dam removal is complete. The MOA also requires PacifiCorp to cover the state of California, sufficient funds would need to be provided by the KRRC or an entity other than PacifiCorp for removal to proceed.costs associated with certain pre-existing environmental conditions.

If certain conditions in the amended KHSA are not satisfied and the license does not transfer to the KRRC, PacifiCorp will resume relicensing with the FERC.


As of December 31, 2017,2020, PacifiCorp's assets included $55$21 million of costs associated with the Klamath hydroelectric system's mainstem dams and the associated relicensing and settlement costs, which are being depreciated and amortized in accordance with state regulatory approvals in Utah, Wyoming and Idaho through either December 31, 2019, or December 31, 2022, depending upon the state jurisdiction.2022.


Hydroelectric Commitments


Certain of PacifiCorp's hydroelectric licenses contain requirements for PacifiCorp to make certain capital and operating expenditures related to its hydroelectric facilities. PacifiCorp estimates it is obligatedfacilities, which are estimated to make capital expenditures ofbe approximately $239$182 million over the next 10 years related to these licenses.ten years.

187


Guarantees


The Company has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on the Company's consolidated financial results.


(17)
BHE Shareholders' Equity

(17)    Revenue from Contracts with Customers

Energy Products and Services

The following table summarizes the Company's energy products and services revenue by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 22 (in millions):
For the Year Ended December 31, 2020
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,932 $1,924 $2,566 $$$$$(1)$9,421 
Retail Gas505 114 619 
Wholesale107 199 45 17 (2)366 
Transmission and
distribution
96 60 95 887 641 1,779 
Interstate pipeline1,397 (139)1,258 
Other108 110 
Total Regulated5,243 2,688 2,822 887 1,414 641 (142)13,553 
Nonregulated16 26 134 18 817 515 1,528 
Total Customer Revenue5,243 2,704 2,824 913 1,548 659 817 373 15,081 
Other revenue(1)
98 24 30 109 30 119 65 475 
Total$5,341 $2,728 $2,854 $1,022 $1,578 $659 $936 $438 $15,556 
For the Year Ended December 31, 2019
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,789 $1,938 $2,740 $$$$$(2)$9,465 
Retail Gas570 116 686 
Wholesale99 309 51 (2)457 
Transmission and
distribution
98 57 98 876 690 1,819 
Interstate pipeline1,122 (118)1,004 
Other
Total Regulated4,986 2,874 3,007 876 1,122 690 (122)13,433 
Nonregulated30 36 17 744 577 1,404 
Total Customer Revenue4,986 2,904 3,007 912 1,122 707 744 455 14,837 
Other revenue(1)
82 23 30 101 188 101 534 
Total$5,068 $2,927 $3,037 $1,013 $1,131 $707 $932 $556 $15,371 
188


For the Year Ended December 31, 2018
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,732 $1,915 $2,773 $$$$$(1)$9,419 
Retail Gas636 101 737 
Wholesale55 411 39 (4)501 
Transmission and
distribution
103 56 96 892 700 (1)1,846 
Interstate pipeline1,232 (125)1,107 
Other
Total Regulated4,890 3,018 3,011 892 1,232 700 (131)13,612 
Nonregulated14 39 10 673 624 1,360 
Total Customer Revenue4,890 3,032 3,011 931 1,232 710 673 493 14,972 
Other revenue(1)
136 21 28 89 (29)235 121 601 
Total$5,026 $3,053 $3,039 $1,020 $1,203 $710 $908 $614 $15,573 
(1)Includes net payments to counterparties for the financial settlement of certain derivative contracts at BHE Pipeline Group.

Real Estate Services

The following table summarizes the Company's real estate services revenue by line of business (in millions):
HomeServices
Years Ended December 31,
202020192018
Customer Revenue:
Brokerage$4,520 $4,028 $3,882 
Franchise76 68 67 
Total Customer Revenue4,596 4,096 3,949 
Mortgage and other revenue800 377 265 
Total$5,396 $4,473 $4,214 

Remaining Performance Obligations

The following table summarizes the Company's revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of December 31, 2020, by reportable segment (in millions):
Performance obligations expected to be satisfied
Less than 12 monthsMore than 12 monthsTotal
BHE Pipeline Group$2,563 $22,088 $24,651 
BHE Transmission647 647 
Total$3,210 $22,088 $25,298 

189


(18)BHE Shareholders' Equity

Preferred Stock

In October 2020, BHE issued 3,750,000 shares of its Perpetual Preferred Stock (the "4% Perpetual Preferred Stock") for $3.75 billion to certain subsidiaries of Berkshire Hathaway Inc. The 4% Perpetual Preferred Stock has a liquidation preference of $1,000 per share and currently pays a 4.00% dividend per share on the liquidation preference. Dividends shall accrue and accumulate daily, be cumulative, compound semi-annually and, if declared, be payable in cash semi-annually in arrears on May 15 and November 15 of each year. If dividends are not declared and paid, any accumulating dividends shall continue to accumulate and compound. BHE may not make any dividends on shares of any other class or series of its capital stock (other than for dividends on shares of common stock payable in shares of common stock, unless the holders of the then outstanding 4% Perpetual Preferred Stock shall first receive, or simultaneously receive, a dividend in an amount at least equivalent to the amount accumulated and not previously paid. BHE may not declare or pay any dividends on shares of the 4% Perpetual Preferred Stock if such declaration or payment would constitute an event of default on BHE's senior indebtedness (as defined). BHE may, at its option, redeem the 4% Perpetual Preferred Stock in whole or in part at any time at a price per share equal to the liquidation preference.

Common Stock


On March 14, 2000, and as amended on December 7, 2005, BHE's shareholders entered into a Shareholder Agreement that provides specific rights to certain shareholders. One of these rights allows certain shareholders the ability to put their common shares back to BHE at the then currentthen-current fair value dependent on certain circumstances controlled by BHE.

On June 19, 2017, BHE issued $100 million of its 5.00% junior subordinated debentures due June 2057 in exchange for 181,819 shares of its common stock from certain family interests of Mr. Walter Scott, Jr. On February 17, 2017, BHE repurchased from certain family interests of Mr. Walter Scott, Jr. 35,000 shares of its common stock for $19 million. On February 17, 2015, BHE repurchased from certain family interests of Mr. Walter Scott, Jr. 75,000 shares of its common stock for $36 million.



Restricted Net Assets


BHE has maximum debt-to-total capitalization percentage restrictions imposed by its senior unsecured credit facilities expiring in May 2018 and June 20202022 which, in certain circumstances, limit BHE's ability to make cash dividends or distributions. As a result of this restriction, BHE has restricted net assets of $16.9$14.7 billion as of December 31, 2017.2020.


Certain of BHE's subsidiaries have restrictions on their ability to dividend, loan or advance funds to BHE due to specific legal or regulatory restrictions, including, but not limited to, maximum debt-to-total capitalization percentages and commitments made to state commissions or federal agencies in connection with past acquisitions.commissions. As a result of these restrictions, BHE's subsidiaries had restricted net assets of $19.4$18.1 billion as of December 31, 2017.2020.


(18)(19)Components of Accumulated Other Comprehensive Loss, Net


The following table shows the change in accumulated other comprehensive loss attributable to BHE shareholders by each component of other comprehensive income (loss), net of applicable income taxes, for the year ended December 31 (in millions):
UnrecognizedForeignUnrealizedUnrealizedAOCI
Amounts onCurrencyGains onGains (Losses)Attributable
RetirementTranslationMarketableon Cash FlowTo BHE
BenefitsAdjustmentSecuritiesHedgesShareholders, Net
Balance, December 31, 2017$(383)$(1,129)$1,085 $29 $(398)
Adoption of ASU 2016-01— — (1,085)— (1,085)
Other comprehensive income (loss)25 (494)(462)
Balance, December 31, 2018(358)(1,623)36 (1,945)
Other comprehensive (loss) income(59)327 (29)239 
Balance, December 31, 2019(417)(1,296)(1,706)
Other comprehensive (loss) income(65)233 (15)153 
Balance, December 31, 2020$(482)$(1,063)$$(8)$(1,553)
          Accumulated
      Unrealized   Other
  Unrecognized Foreign Gains on Unrealized Comprehensive
  Amounts on Currency Available- Gains on Loss Attributable
  Retirement Translation For-Sale Cash Flow To BHE
  Benefits Adjustment Securities Hedges Shareholders, Net
           
Balance, December 31, 2014 $(490) $(412) $390
 $18
 $(494)
Other comprehensive income (loss) 52
 (680) 225
 (11) (414)
Balance, December 31, 2015 (438) (1,092) 615
 7
 (908)
Other comprehensive income (loss) (9) (583) (30) 19
 (603)
Balance, December 31, 2016 (447) (1,675) 585
 26
 (1,511)
Other comprehensive income (loss) 64
 546
 500
 3
 1,113
Balance, December 31, 2017 $(383) $(1,129) $1,085
 $29
 $(398)


Reclassifications from AOCI to net income for the years ended December 31, 2017, 20162020, 2019 and 20152018 were insignificant. For information regarding cash flow hedge reclassifications from AOCI to net income in their entirety, refer to Note 14. Additionally, refer to the "Foreign Operations" discussion in Note 1213 for information about unrecognized amounts on retirement benefits reclassifications from AOCI that do not impact net income in their entirety.

190
(19)
Noncontrolling Interests


(20)Variable Interest Entities and Noncontrolling Interests

The primary beneficiary of a VIE is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE.

As part of the GT&S Transaction, BHE acquired an indirect 25% economic interest in Cove Point, consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE concluded that Cove Point is a VIE due to the limited partners lacking the characteristics of a controlling financial interest. BHE is the primary beneficiary of Cove Point as it has the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to it.

Included in noncontrolling interests on the Consolidated Balance Sheets are (i) Dominion Energy's 50% interest in Cove Point and Brookfield Super-Core Infrastructure Partner's 25% interest in Cove Point and (ii) preferred securities of subsidiaries of $58$58 million as of December 31, 20172020 and 2016,2019, consisting of $56 million of 8.061% cumulative preferred securities of Northern Electric plc.,plc, a subsidiary of Northern Powergrid, which are redeemable in the event of the revocation of Northern Electric plc.'splc's electricity distribution license by the Secretary of State, and $2 million of nonredeemable preferred stock of PacifiCorp.



(20)
(21)Supplemental Cash Flow Disclosures


Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20202019
Cash and cash equivalents$1,290 $1,040 
Restricted cash and cash equivalents140 212 
Investments and restricted cash and cash equivalents and investments15 16 
Total cash and cash equivalents and restricted cash and cash equivalents$1,445 $1,268 

The summary of supplemental cash flow disclosures as of and for the years ending December 31 is as follows (in millions):
202020192018
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$1,855 $1,723 $1,713 
Income taxes received, net(1)
$1,361 $850 $780 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$801 $888 $823 

(1)Includes $1,504 million, $942 million and $884 million of income taxes received from Berkshire Hathaway in 2020, 2019 and 2018, respectively.

191
 2017 2016 2015
Supplemental disclosure of cash flow information:     
Interest paid, net of amounts capitalized$1,715
 $1,673
 $1,764
Income taxes received, net(1)
$540
 $1,016
 $1,666
      
Supplemental disclosure of non-cash investing and financing transactions:     
Accruals related to property, plant and equipment additions$653
 $547
 $718
Common stock exchanged for junior subordinated debentures$100
 $
 $



(1)Includes $636 million, $1.1 billion and $1.8 billion of income taxes received from Berkshire Hathaway in 2017, 2016 and 2015, respectively.


(21)(22)Segment Information


The Company's reportable segments with foreign operations include Northern Powergrid, whose business is principally in the United Kingdom, BHE Transmission, whose business includes operations in Canada, and BHE Renewables, whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the Company's reportable segments is shown below (in millions):
Years Ended December 31,
202020192018
Operating revenue:
PacifiCorp$5,341 $5,068 $5,026 
MidAmerican Funding2,728 2,927 3,053 
NV Energy2,854 3,037 3,039 
Northern Powergrid1,022 1,013 1,020 
BHE Pipeline Group1,578 1,131 1,203 
BHE Transmission659 707 710 
BHE Renewables936 932 908 
HomeServices5,396 4,473 4,214 
BHE and Other(1)
438 556 614 
Total operating revenue$20,952 $19,844 $19,787 
   
Depreciation and amortization:   
PacifiCorp$1,209 $954 $979 
MidAmerican Funding716 638 609 
NV Energy502 482 456 
Northern Powergrid266 254 250 
BHE Pipeline Group231 115 126 
BHE Transmission201 240 247 
BHE Renewables284 282 268 
HomeServices45 47 51 
BHE and Other(1)
(1)(2)
Total depreciation and amortization$3,455 $3,011 $2,984 
   
Operating income:   
PacifiCorp$924 $1,072 $1,051 
MidAmerican Funding454 549 550 
NV Energy649 655 607 
Northern Powergrid421 472 486 
BHE Pipeline Group779 572 525 
BHE Transmission316 323 313 
BHE Renewables291 336 325 
HomeServices511 222 214 
BHE and Other(1)
(54)(51)
Total operating income4,291 4,150 4,072 
Interest expense(2,021)(1,912)(1,838)
Capitalized interest80 77 61 
Allowance for equity funds165 173 104 
Interest and dividend income71 117 113 
Gains (losses) on marketable securities, net4,797 (288)(538)
Other, net88 97 (9)
Total income before income tax expense (benefit) and equity (loss) income$7,471 $2,414 $1,965 
192


Years Ended December 31,
Years Ended December 31,202020192018
2017 2016 2015
Operating revenue:     
Interest expense:Interest expense:
PacifiCorp$5,237
 $5,201
 $5,232
PacifiCorp$426 $401 $384 
MidAmerican Funding2,846
 2,631
 2,515
MidAmerican Funding322 302 247 
NV Energy3,015
 2,895
 3,351
NV Energy227 229 224 
Northern Powergrid949
 995
 1,140
Northern Powergrid130 139 141 
BHE Pipeline Group993
 978
 1,016
BHE Pipeline Group74 52 43 
BHE Transmission699
 502
 592
BHE Transmission148 157 167 
BHE Renewables838
 743
 728
BHE Renewables166 174 201 
HomeServices3,443
 2,801
 2,526
HomeServices11 25 23 
BHE and Other(1)
594
 676
 780
BHE and Other(1)
517 433 408 
Total operating revenue$18,614
 $17,422
 $17,880
Total interest expenseTotal interest expense$2,021 $1,912 $1,838 
     
Depreciation and amortization:     
Income tax expense (benefit):Income tax expense (benefit):
PacifiCorpPacifiCorp$(75)$61 $
MidAmerican FundingMidAmerican Funding(574)(377)(262)
NV EnergyNV Energy61 98 100 
Northern PowergridNorthern Powergrid96 59 61 
BHE Pipeline GroupBHE Pipeline Group162 138 119 
BHE TransmissionBHE Transmission13 11 
BHE Renewables(2)
BHE Renewables(2)
(602)(325)(158)
HomeServicesHomeServices138 51 52 
BHE and Other(1)
BHE and Other(1)
1,089 (314)(507)
Total income tax expense (benefit)Total income tax expense (benefit)$308 $(598)$(583)
Net income attributable to BHE shareholders:Net income attributable to BHE shareholders:
PacifiCorpPacifiCorp$741 $773 $739 
MidAmerican FundingMidAmerican Funding818 781 669 
NV EnergyNV Energy410 365 317 
Northern PowergridNorthern Powergrid201 256 239 
BHE Pipeline GroupBHE Pipeline Group528 422 387 
BHE TransmissionBHE Transmission231 229 210 
BHE Renewables(2)
BHE Renewables(2)
521 431 329 
HomeServicesHomeServices375 160 145 
BHE and OtherBHE and Other3,118 (467)(467)
Total net income attributable to BHE shareholdersTotal net income attributable to BHE shareholders$6,943 $2,950 $2,568 
Capital expenditures:Capital expenditures:
PacifiCorp$796
 $783
 $780
PacifiCorp$2,540 $2,175 $1,257 
MidAmerican Funding500
 479
 407
MidAmerican Funding1,836 2,810 2,332 
NV Energy422
 421
 410
NV Energy675 657 503 
Northern Powergrid214
 200
 202
Northern Powergrid682 602 566 
BHE Pipeline Group159
 206
 204
BHE Pipeline Group659 687 427 
BHE Transmission239
 241
 185
BHE Transmission372 247 270 
BHE Renewables251
 230
 216
BHE Renewables95 122 817 
HomeServices66
 31
 29
HomeServices36 54 47 
BHE and Other(1)
(1) 
 (5)
Total depreciation and amortization$2,646
 $2,591
 $2,428
     
Operating income:     
PacifiCorp$1,462
 $1,427
 $1,344
MidAmerican Funding562
 566
 451
NV Energy765
 770
 812
Northern Powergrid436
 494
 593
BHE Pipeline Group475
 455
 464
BHE Transmission322
 92
 260
BHE Renewables316
 256
 255
HomeServices214
 212
 184
BHE and Other(1)
(38) (21) (35)
Total operating income4,514
 4,251
 4,328
Interest expense(1,841) (1,854) (1,904)
Capitalized interest45
 139
 74
Allowance for equity funds76
 158
 91
Interest and dividend income111
 120
 107
Other, net(398) 36
 39
Total income before income tax (benefit) expense and equity (loss) income$2,507
 $2,850
 $2,735
BHE and OtherBHE and Other(130)10 22 
Total capital expendituresTotal capital expenditures$6,765 $7,364 $6,241 
193


As of December 31,
Years Ended December 31,202020192018
2017 2016 2015
Interest expense:     
PacifiCorp$381
 $381
 $383
MidAmerican Funding237
 218
 206
NV Energy233
 250
 262
Northern Powergrid133
 136
 145
BHE Pipeline Group43
 50
 66
BHE Transmission169
 153
 146
BHE Renewables204
 198
 193
HomeServices7
 2
 3
BHE and Other(1)
434
 466
 500
Total interest expense$1,841
 $1,854
 $1,904
     
Income tax (benefit) expense:     
PacifiCorp$362
 $341
 $328
MidAmerican Funding(202) (139) (150)
NV Energy221
 200
 207
Northern Powergrid57
 22
 35
BHE Pipeline Group170
 163
 158
BHE Transmission(124) 26
 63
BHE Renewables(2)
(795) (32) 41
HomeServices49
 81
 72
BHE and Other(1)
(292) (259) (304)
Total income tax (benefit) expense$(554) $403
 $450
     
Capital expenditures:     
Property, plant and equipment, net:Property, plant and equipment, net:
PacifiCorp$769
 $903
 $916
PacifiCorp$22,430 $20,973 $19,570 
MidAmerican Funding1,776
 1,637
 1,448
MidAmerican Funding19,279 18,377 16,169 
NV Energy456
 529
 571
NV Energy9,865 9,613 9,367 
Northern Powergrid579
 579
 674
Northern Powergrid7,230 6,606 6,007 
BHE Pipeline Group286
 226
 240
BHE Pipeline Group15,097 5,482 4,904 
BHE Transmission334
 466
 966
BHE Transmission6,445 6,157 5,824 
BHE Renewables323
 719
 1,034
BHE Renewables5,645 5,976 6,155 
HomeServices37
 20
 16
HomeServices159 161 141 
BHE and Other11
 11
 10
BHE and Other(22)(40)(50)
Total capital expenditures$4,571
 $5,090
 $5,875
Total property, plant and equipment, netTotal property, plant and equipment, net$86,128 $73,305 $68,087 
Total assets:Total assets:
PacifiCorpPacifiCorp$26,862 $24,861 $23,478 
MidAmerican FundingMidAmerican Funding23,530 22,664 20,029 
NV EnergyNV Energy14,501 14,128 14,119 
Northern PowergridNorthern Powergrid8,782 8,385 7,427 
BHE Pipeline GroupBHE Pipeline Group19,541 6,100 5,511 
BHE TransmissionBHE Transmission9,208 8,776 8,424 
BHE RenewablesBHE Renewables12,004 9,961 8,666 
HomeServicesHomeServices4,955 3,846 2,797 
BHE and OtherBHE and Other7,933 1,330 1,738 
Total assetsTotal assets$127,316 $100,051 $92,189 
Years Ended December 31,
202020192018
Operating revenue by country:Operating revenue by country:
United StatesUnited States$19,254 $18,108 $18,014 
United KingdomUnited Kingdom1,022 1,011 1,017 
CanadaCanada653 706 710 
Philippines and otherPhilippines and other23 19 46 
Total operating revenue by countryTotal operating revenue by country$20,952 $19,844 $19,787 
Income before income tax expense (benefit) and equity (loss) income by country:Income before income tax expense (benefit) and equity (loss) income by country:
United StatesUnited States$6,954 $1,866 $1,425 
United KingdomUnited Kingdom338 326 307 
CanadaCanada173 178 155 
Philippines and otherPhilippines and other44 78 
Total income before income tax expense (benefit) and equity (loss) income by country:Total income before income tax expense (benefit) and equity (loss) income by country:$7,471 $2,414 $1,965 
194


 As of December 31,
 2017 2016 2015
Property, plant and equipment, net:     
PacifiCorp$19,203
 $19,162
 $19,039
MidAmerican Funding14,221
 12,835
 11,737
NV Energy9,770
 9,825
 9,767
Northern Powergrid6,075
 5,148
 5,790
BHE Pipeline Group4,587
 4,423
 4,345
BHE Transmission6,330
 5,810
 5,301
BHE Renewables5,637
 5,302
 4,805
HomeServices117
 78
 70
BHE and Other(69) (74) (85)
Total property, plant and equipment, net$65,871
 $62,509
 $60,769
      
Total assets:     
PacifiCorp$23,086
 $23,563
 $23,550
MidAmerican Funding18,444
 17,571
 16,315
NV Energy13,903
 14,320
 14,656
Northern Powergrid7,565
 6,433
 7,317
BHE Pipeline Group5,134
 5,144
 4,953
BHE Transmission9,009
 8,378
 7,553
BHE Renewables7,687
 7,010
 5,892
HomeServices2,722
 1,776
 1,705
BHE and Other2,658
 1,245
 1,677
Total assets$90,208
 $85,440
 $83,618
      
 Years Ended December 31,
 2017 2016 2015
Operating revenue by country:     
United States$16,916
 $15,895
 $16,121
United Kingdom948
 995
 1,140
Canada699
 506
 600
Philippines and other51
 26
 19
Total operating revenue by country$18,614
 $17,422
 $17,880
      
Income before income tax (benefit) expense and equity (loss) income by country:    
United States$1,927
 $2,264
 $2,034
United Kingdom313
 382
 472
Canada167
 135
 165
Philippines and other100
 69
 64
Total income before income tax (benefit) expense and equity (loss) income by country:$2,507
 $2,850
 $2,735
As of December 31,
202020192018
Property, plant and equipment, net by country:
United States$72,583 $60,634 $56,362 
United Kingdom7,134 6,504 5,895 
Canada6,401 6,157 5,817 
Philippines and other10 10 13 
Total property, plant and equipment, net by country$86,128 $73,305 $68,087 


(1)The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate to other corporate entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.
 As of December 31,
 2017 2016 2015
Property, plant and equipment, net by country:     
United States$53,579
 $51,671
 $49,680
United Kingdom5,953
 5,020
 5,757
Canada6,323
 5,803
 5,298
Philippines and other16
 15
 34
Total property, plant and equipment, net by country$65,871
 $62,509
 $60,769


(1)The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate to other corporate entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.

(2)Income tax (benefit) expense includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

(2)Income tax expense (benefit) includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

The following table shows the change in the carrying amount of goodwill by reportable segment for the years ended December 31, 20172020 and 20162019 (in millions):
BHEBHE
MidAmericanNVNorthernPipelineBHEBHEHome-and
PacifiCorpFundingEnergyPowergridGroupTransmissionRenewablesServicesOtherTotal
December 31, 2018$1,129 $2,102 $2,369 $952 $73 $1,448 $95 $1,427 $$9,595 
Acquisitions29 29 
Foreign currency translation26 72 98 
December 31, 20191,129 2,102 2,369 978 73 1,520 95 1,456 9,722 
Acquisitions1,730 1,731 
Foreign currency translation22 31 53 
December 31, 2020$1,129 $2,102 $2,369 $1,000 $1,803 $1,551 $95 $1,457 $$11,506 

195
         BHE       BHE  
   MidAmerican NV Northern Pipeline BHE BHE Home- and  
 PacifiCorp Funding Energy Powergrid Group Transmission Renewables Services Other Total
                    
December 31, 2015$1,129
 $2,102
 $2,369
 $1,056
 $101
 $1,428
 $95
 $794
 $2
 $9,076
Acquisitions
 
 
 
 
 4
 
 46
 
 50
Foreign currency translation
 
 
 (126) 
 42
 
 
 (2) (86)
Other
 
 
 
 (26) (4) 
 
 
 (30)
December 31, 20161,129
 2,102
 2,369
 930
 75
 1,470
 95
 840
 
 9,010
Acquisitions
 
 
 
 
 
 
 508
 
 508
Foreign currency translation
 
 
 61
 
 101
 
 
 
 162
Other
 
 
 
 (2) 
 
 
 
 (2)
December 31, 2017$1,129
 $2,102
 $2,369
 $991
 $73
 $1,571
 $95
 $1,348
 $
 $9,678




PacifiCorp and its subsidiaries
Consolidated Financial Section


Item 6.Selected Financial Data


The following table sets forth PacifiCorp's selected consolidated historical financial data, which should be read in conjunction with the information in
196


Item 7 of this Form 10-K and with PacifiCorp's historical Consolidated6.    Selected Financial Statements and notes thereto inData

Information required by Item 8 of this6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K. The selected consolidated historical financial data has been derived from PacifiCorp's audited historical Consolidated

Item 7.    Management's Discussion and Analysis of Financial StatementsCondition and notes thereto (in millions).Results of Operations


 Years Ended December 31,
 2017 2016 2015 2014 2013
          
Consolidated Statement of Operations Data:         
Operating revenue$5,237
 $5,201
 $5,232
 $5,252
 $5,147
Operating income1,462
 1,426
 1,340
 1,300
 1,264
Net income768
 763
 695
 698
 682

 As of December 31,
 2017 2016 2015 2014 2013
          
Consolidated Balance Sheet Data:         
Total assets(1)(2)
$21,920
 $22,394
 $22,367
 $22,205
 $21,559
Short-term debt80
 270
 20
 20
 
Current portion of long-term debt and         
capital lease obligations588
 58
 68
 134
 238
Long-term debt and capital lease obligations,         
excluding current portion(2)
6,437
 7,021
 7,078
 6,885
 6,605
Total shareholders' equity7,555
 7,390
 7,503
 7,756
 7,787

(1)In December 2015, PacifiCorp retrospectively adopted Accounting Standards Update No. 2015-17, which resulted in the reclassification of current deferred income tax assets in the amounts of $28 million and $66 million, as of December 31, 2014 and 2013, respectively, as reductions in noncurrent deferred income tax liabilities.

(2)In December 2015, PacifiCorp retrospectively adopted Accounting Standards Update No. 2015-03, which resulted in the reclassification of certain deferred debt issuance costs previously recognized within other assets in the amounts of $34 million, as of December 31, 2014 and 2013, respectively, as reductions in long-term debt.


Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of PacifiCorp during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with Item 6 of this Form 10-K and with PacifiCorp's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. PacifiCorp's actual results in the future could differ significantly from the historical results.


Results of Operations


Overview


Net income for the year ended December 31, 2017,2020, was $768 million, an increase of $5 million, or 1%, compared to 2016, which includes $6 million of income from the Tax Cuts and Jobs Act enacted on December 22, 2017 (the "2017 Tax Reform"). Excluding the impact of 2017 Tax Reform, adjusted net income for the year ended December 31, 2017, was $762$739 million, a decrease of $1$32 million, or 4%, compared to 2016. Net income decreased2019, primarily due to costs associated with the 2020 Wildfires and the Klamath Hydroelectric Project of $169 million, higher depreciation and amortizationnet interest expense of $26$36 million from additional plant placed in-service,higher long-term debt and lower AFUDC of $11 million,cash balances, higher propertypension and other taxespostretirement costs of $7$13 million, and higher operations and maintenance expensesproperty taxes of $3$10 million, excluding the impact of DSM program expense of $55 million (offset in operating revenue), partially offset by lower income tax expense of $99 million (excluding $37 million fully offset primarily in depreciation expense) primarily driven by higher gross margins of $72 million, excluding the impact of DSM program revenue (offset in operations and maintenance expense) of $55 million. Gross margins increasedPTCs substantially due to repowered wind-powered generating facilities and lower pre-tax income, higher utility margin of $47 million (excluding $231 million fully offset in depreciation, operating, other income/expense and income tax expense as a result of regulatory adjustments as ordered by the UPSC, the OPUC and the IPUC), higher allowances for equity and borrowed funds used during construction of $38 million, and prior year costs associated with the early retirement of a coal-fueled generation unit totaling $24 million. Utility margin increased primarily due to lower coal-fueled generation volumes, lower purchased electricity prices, higher average retail customer volumes,rates, and lower natural gas-fueled generation higher wholesale revenue from higher volumes and short-term market prices, and higher wheeling revenues,costs, partially offset by lower net deferrals of incurred net power costs in accordance with established adjustment mechanisms, lower retail customer volumes and higher purchased electricity costs, lower average retail rates, and higher coal costs.volumes. Retail customer volumes increased 1.7%decreased 1.4% primarily due to impacts of weather across the service territory,COVID-19, which resulted in lower industrial and commercial customer usage and higher commercialresidential customer usage, andpartially offset by an increase in the average number of residential and commercial customers primarily in Utah and Oregon, partially offset by lower residential customers' usage in Utah and Oregon, and lower irrigation usage.the favorable impact of weather. Energy generated decreased 2%4% for 20172020 compared to 20162019 primarily due to lower natural gas-fueled and wind-powercoal-fueled generation, partially offset by higher coal-fueled,wind and hydroelectrichydroelectric-powered generation. Wholesale electricity sales volumes increased 9%decreased 4% and purchased electricity volumes increased 23%9%.


Net income for the year ended December 31, 20162019, was $763$771 million, an increase of $68$33 million, or 10%4%, compared to 2015. Net income increased2018, primarily due to higher marginsallowances for funds used during construction of $86$55 million, lower pension and post retirement expense of $11 million primarily due to a prior year pension settlement charge of $22 million, partially offset by higher non-service cost components of pension and other postretirement expenses of $11 million, and lower operations and maintenance expenseshigher utility margin of $18$4 million, partially offset by higher depreciation and amortization expense of $13$25 million from additional plant placed in-service, excluding a $49 million decrease in accelerated depreciation expense (offset in income tax expense) associated with Oregon's share of certain retired wind equipment in the current year and Utah's share of certain thermal plant units in the prior year, lower AFUDCPTCs of $9$21 million from expirations, higher interest expense of $17 million, and higher property taxesoperations and maintenance expense of $5$10 million, primarily due to costs associated with the early retirement of Cholla Unit 4 of $24 million, increase in vegetation management costs of $11 million, partially offset by a decrease in expenses primarily due to lower wildfire costs of $9 million. MarginsUtility margin increased primarily due to lower coal-fueled generation volumes, higher retail revenue, and higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms, partially offset by higher purchased electricity costs, and higher retail revenue, lower coal-fuelednatural gas-fueled generation costs. Retail volumes increased 0.4% primarily due to the increase in the average number of residential and lower natural gas costs,commercial customers and the favorable impact of weather on residential customer volumes in all states except Utah, partially offset by lower wholesalecommercial usage primarily in Utah and Washington. Energy generated decreased 3% for 2019 compared to 2018 primarily due to lower coal-fueled, wind and hydroelectric-powered generation, partially offset by higher natural gas-fueled generation. Wholesale electricity sales volumes decreased 34% and purchased electricity volumes decreased 5%.

197


Non-GAAP Financial Measure

Management utilizes various key financial measures that are prepared in accordance with GAAP, as well as non-GAAP financial measures such as, utility margin, to help evaluate results of operations. Utility margin is calculated as operating revenue less cost of fuel and energy, which are captions presented on the Consolidated Statements of Operations.

PacifiCorp's cost of fuel and energy is generally recovered from its retail customers through regulatory recovery mechanisms and, as a result, changes in PacifiCorp's expenses included in regulatory recovery mechanisms result in comparable changes to revenue. As such, management believes utility margin more appropriately and concisely explains profitability rather than a discussion of revenue and cost of fuel and energy separately. Management believes the presentation of utility margin provides meaningful and valuable insight into the information management considers important to running the business and a measure of comparability to others in the industry.
Utility margin is not a measure calculated in accordance with GAAP and should be viewed as a supplement to, and not a substitute for, operating income, which is the most directly comparable financial measure prepared in accordance with GAAP. The following table provides a reconciliation of utility margin to operating income for the years ended December 31 (in millions):
20202019Change20192018Change
Utility margin:
Operating revenue$5,341 $5,068 $273 %$5,068 $5,026 $42 %
Cost of fuel and energy1,790 1,795 (5)— 1,795 1,757 38 
Utility margin3,551 3,273 278 3,273 3,269 — 
Operations and maintenance1,209 1,048 161 15 1,048 1,038 10 
Depreciation and amortization1,209 954 255 27 954 979 (25)(3)
Property and other taxes209 199 10 199 201 (2)(1)
Operating income$924 $1,072 $(148)(14)%$1,072 $1,051 $21 %

198


Utility Margin

A comparison of key operating results related to utility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue5,341 $5,068 $273 %$5,068 $5,026 $42 %
Cost of fuel and energy1,790 1,795 (5)— 1,795 1,757 38 
Utility margin$3,551 $3,273 $278 %$3,273 $3,269 $— %
Sales (GWhs):
Residential17,150 16,668 482 %16,668 16,227 441 %
Commercial(1)
17,727 18,151 (424)(2)18,151 18,078 73 — 
Industrial, irrigation and other(1)
19,683 20,524 (841)(4)20,524 20,810 (286)(1)
Total retail54,560 55,343 (783)(1)55,343 55,115 228 — 
Wholesale5,249 5,480 (231)(4)5,480 8,309 (2,829)(34)
Total sales59,809 60,823 (1,014)(2)%60,823 63,424 (2,601)(4)%
Average number of retail customers
(in thousands)1,967 1,933 34 %1,933 1,900 33 %
Average revenue per MWh:
Retail$90.59 $84.80 $5.79 %$84.80 $84.43 $0.37 — %
Wholesale$35.56 $35.21 $0.35 %$35.21 $22.56 $12.65 56 %
Heating degree days10,155 11,143 (988)(9)%11,143 9,810 1,333 14 %
Cooling degree days2,111 1,773 338 19 %1,773 1,983 (210)(11)%
Sources of energy (GWhs)(1):
Coal30,636 34,510 (3,874)(11)%34,510 36,481 (1,971)(5)%
Natural gas12,045 12,058 (13)— 12,058 10,555 1,503 14 
Hydroelectric(2)
3,044 2,842 202 2,842 3,263 (421)(13)
Wind and other(2)
3,948 2,385 1,563 66 2,385 3,205 (820)(26)
Total energy generated49,673 51,795 (2,122)(4)51,795 53,504 (1,709)(3)
Energy purchased14,054 12,906 1,148 12,906 13,579 (673)(5)
Total63,727 64,701 (974)(2)%64,701 67,083 (2,382)(4)%
Average cost of energy per MWh:
Energy generated(3)
$18.74 $19.36 $(0.62)(3)%$19.36 $18.91 $0.45 %
Energy purchased$47.60 $54.20 $(6.60)(12)%$54.20 $48.23 $5.97 12 %

(1)    GWh amounts are net of energy used by the related generating facilities.
(2)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of RECs or other environmental commodities.
(3)    The average cost per MWh of energy generated includes only the cost of fuel associated with the generating facilities.

199


Year Ended December 31, 2020 Compared to Year Ended December 31, 2019

Utility margin increased $278 million for 2020 compared to 2019 primarily due to:
$249 million increase in retail revenue, was primarilyincluding $234 million fully offset in depreciation expense and income tax expense due to accelerated depreciation of certain coal-fueled units in Utah and Oregon and recognition of certain Utah regulatory balances and higher average retail rates.prices, partially offset by lower retail customer volumes. Retail customer volumes decreased 0.6%1.4% primarily due to impacts of COVID-19, which resulted in lower industrial and commercial customer usage in Utah and lower industrialhigher residential customer usage, in Utah and Oregon, partially offset by an increase in the average number of residential customers in Utah and Oregon, an increase in the average number of commercial customers in Utah and the impactsfavorable impact of weather on residential customer volumes. Energy generated decreased 5% for 2016 compared to 2015weather;
$49 million of lower coal-fueled generation costs primarily due to lower coal-fueled generation,volumes of $78 million, partially offset by $37 million of accelerated recognition of certain Utah regulatory balances associated with the 2015 Utah mine disposition and certain Cholla Unit 4 related closure costs in Oregon and Idaho (offset in income tax expense) and higher prices of $9 million;
$34 million of higher other revenue due to recognition of prior OATT revenue related deferrals in Oregon used to accelerate the depreciation of certain retired wind equipment as a result of the 2020 Oregon RAC settlement (offset in depreciation expense);
$31 million of lower purchased electricity costs, primarily due to lower average market prices, partially offset by higher hydroelectric,volumes; and
$24 million of lower natural gas-fueled generation costs primarily due to lower average prices and wind-powered generation. Wholesale electricity sales volumes decreased 25%lower volumes.
The increases above were partially offset by:
$106 million primarily from lower deferrals and purchased electricity volumes decreased 2%.higher amortization of previous deferrals of incurred net power costs in accordance with established adjustment mechanisms.


Operating revenueOperations and energy costs are the key drivers of PacifiCorp's results of operations as they encompass retail and wholesale electricity revenue and the directmaintenance increased $161 million, or 15%, for 2020 compared to 2019 primarily due to costs associated with providing electricitythe 2020 Wildfires of $136 million, net of expected insurance recoveries, and costs associated with the Klamath Hydroelectric Project of $33 million, higher vegetation management and wildfire mitigation costs of $26 million and increased bad debt expense of $5 million, partially offset by prior year costs associated with the early retirement of Cholla Unit 4 of $24 million and lower employee related expenses of $7 million as a result of COVID-19.
Depreciation and amortization increased $255 million, or 27%, for 2020 compared to customers. PacifiCorp believes that2019 primarily due to current year accelerated depreciation of $376 million as a discussionresult of gross margin, representing operatingregulatory adjustments ordered by the UPSC, the OPUC and the IPUC (fully offset in retail revenue, less energyother revenue, and income tax expense), including accelerated depreciation of certain coal-fueled units and Oregon's share of certain retired wind equipment as a result the 2020 Oregon RAC settlement, partially offset by prior year accelerated depreciation of $120 million (offset in income tax expense) on Oregon's share of certain retired wind equipment due to repowering as a result of the 2019 Oregon RAC settlement.

Property and other taxes increased $10 million, or 5%, for 2020 compared to 2019 primarily due to higher property taxes in Oregon and Utah.

Interest expense increased $25 million, or 6%, for 2020 compared to 2019 primarily due to higher average long-term debt balances, partially offset by a lower weighted average long-term debt interest rate.

Allowance for borrowed and equity funds increased $38 million, or 35%, for 2020 compared to 2019 primarily due to higher qualified construction work-in-progress balances.

Interest and dividend income decreased$11 million, or 52%, for 2020 compared to 2019 primarily due to lower average interest rates in the current year.

Other, net decreased $22 million, or 69% for 2020 compared to 2019 primarily due to higher pension and post retirement costs is therefore meaningful.of $13 million and costs associated with the recognition of Utah's share of the post retirement settlement loss associated with the 2015 Utah mine disposition (offset in income tax expense).

A comparison of PacifiCorp's key operating results is as follows for the years ended December 31:


200


  2017 2016 Change 2016 2015 Change
                 
Gross margin (in millions):                
Operating revenue $5,237
 $5,201
 $36
 1 % $5,201
 $5,232
 $(31) (1)%
Energy costs 1,770
 1,751
 19
 1
 1,751
 1,868
 (117) (6)
Gross margin $3,467
 $3,450
 $17
 
 $3,450
 $3,364
 $86
 3
                 
Sales (GWh):                
Residential 16,625
 16,058
 567
 4 % 16,058
 15,566
 492
 3 %
Commercial(1)
 17,726
 16,857
 869
 5
 16,857
 17,262
 (405) (2)
Industrial, irrigation and other(1)
 20,899
 21,403
 (504) (2) 21,403
 21,813
 (410) (2)
Total retail 55,250
 54,318
 932
 2
 54,318
 54,641
 (323) (1)
Wholesale 7,218
 6,641
 577
 9
 6,641
 8,889
 (2,248) (25)
Total sales 62,468
 60,959
 1,509
 2
 60,959
 63,530
 (2,571) (4)
                 
Average number of retail customers                
(in thousands) 1,867
 1,841
 26
 1 % 1,841
 1,813
 28
 2 %
                 
Average revenue per MWh:                
Retail $87.78
 $89.55
 $(1.77) (2)% $89.55
 $87.99
 $1.56
 2 %
Wholesale $28.56
 $26.46
 $2.10
 8 % $26.46
 $29.92
 $(3.46) (12)%
                 
Sources of energy (GWh)(2):
                
Coal 37,362
 36,578
 784
 2 % 36,578
 41,298
 (4,720) (11)%
Natural gas 7,447
 9,884
 (2,437) (25) 9,884
 9,222
 662
 7
Hydroelectric(3)
 4,731
 3,843
 888
 23
 3,843
 2,914
 929
 32
Wind and other(3)
 2,890
 3,253
 (363) (11) 3,253
 2,892
 361
 12
Total energy generated 52,430
 53,558
 (1,128) (2) 53,558
 56,326
 (2,768) (5)
Energy purchased 14,076
 11,429
 2,647
 23
 11,429
 11,646
 (217) (2)
Total 66,506
 64,987
 1,519
 2
 64,987
 67,972
 (2,985) (4)
                 
Average cost of energy per MWh:                
Energy generated(4)
 $19.14
 $19.27
 $(0.13) (1)% $19.27
 $19.38
 $(0.11) (1)%
Energy purchased $43.25
 $44.64
 $(1.39) (3)% $44.64
 $49.92
 $(5.28) (11)%
Income tax (benefit) expense decreased $136 million to a benefit of $75 million for 2020 compared to an expense of $61 million for 2019. The effective tax rate was (11)% and 7% for 2020 and 2019, respectively. The effective tax rate decreased primarily as a result of higher amortization of excess deferred income taxes in 2020 and higher PTCs. In 2020, $118 million of excess deferred income taxes was amortized pursuant to regulatory orders from Utah, Oregon and Idaho, whereby portions of excess deferred income taxes were used to accelerate depreciation of certain coal-fueled units and Oregon's share of certain retired wind equipment or offset other regulatory balances for these jurisdictions. In 2019, $91 million of Oregon's allocated excess deferred income taxes was amortized pursuant to the 2019 Oregon RAC proceeding, whereby a portion of Oregon's allocated excess deferred income taxes was used to accelerate depreciation for Oregon's share of certain retired wind equipment due to repowering.

(1)In the current year, one customer was reclassified from "Industrial, irrigation and other" into "Commercial" resulting in an increase of 61 GWh to "Commercial."
(2)GWh amounts are net of energy used by the related generating facilities.
(3)All or some of the renewable energy attributes associated with generation from these generating facilities may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of RECs or other environmental commodities.
(4)The average cost per MWh of energy generated includes only the cost of fuel associated with the generating facilities.




Year Ended December 31, 20172019 Compared to Year Ended December 31, 20162018


GrossUtility marginincreased $17$4 million for 20172019 compared to 20162018 primarily due to:
$10554 million of lower coal-fueled generation costs primarily due to lower average volumes;
$40 million of higher retail revenuesrevenue primarily from higher retail customer volumes. Retail volumes increased 0.4% primarily due to increased customer volumes of 1.7% due to impacts of weather across the service territory, higher commercial usage, an increase in the average number of residential and commercial customers and the favorable impact of weather on residential customer volumes in all states except Utah, partially offset by lower commercial usage primarily in Utah and Oregon, partially offset by lower residential usage in Utah and Oregon and lower irrigation usage;Washington;
$5411 million of higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms; and
$40 million of lower natural gas costs primarily due to lower volumes and prices in 2017;
$305 million of higher wholesale revenue due tofrom higher volumes and short-termaverage market prices;
$20 million ofprices, offset by lower coal costs due to prior year charges related to damaged longwall mining equipment; and
$12 million of higher wheeling revenue, primarily due to increased volumes and short-term prices.volumes.
The increases above were partially offset by:
$9945 million of higher purchased electricity costs due to higher average market prices, offset by lower volumes;
$64 million of lower average retail rates, primarily due to product mix;
$55 million of lower DSM program revenue (offset in operations and maintenance expense), primarily driven by the recently implemented Utah Sustainable Transportation and Energy Plan ("STEP") program; and
$3145 million of higher coalnatural gas-fueled generation costs due to higher average volumes and prices.prices; and

$11 million of higher wheeling costs and lower wheeling revenues.

Operations and maintenance decreased $52 increased $10 million, or 5%1%, for 20172019 compared to 20162018 primarily due to costs associated with the early retirement of Cholla Unit 4 in December 2020 of $24 million and an $11 million increase in vegetation management costs, partially offset by a $9 million decrease in fire suppression costs, a $7 million decrease in materials and supply expense primarily due to usage, and reduced labor and benefits expense primarily due to higher capitalized labor related to construction projects.

Depreciation and amortization decreased $25 million, or 3%, for 2019 compared to 2018 primarily due to a decrease in DSM program expenseaccelerated depreciation (offset in revenues)income tax expense) resulting from $174 million of $55 million drivenaccelerated depreciation in the prior year for Utah's share of certain thermal plant units pursuant to a 2017 Tax Reform settlement approved by the establishmentUPSC compared to $120 million of accelerated depreciation in the Utah STEP program and lower pension expensecurrent year for Oregon's share of certain retired wind equipment due to a current year plan change. These decreases wererepowering as ordered in the Oregon RAC proceeding, partially offset by higher injury and damage expenses, primarily due to prior year accrual for insurance proceeds and current year settlements, and higher labor costs for storm damage restoration.plant-in-service.


Depreciation and amortization Interest expense increased $26$17 million, or 3%4%, for 20172019 compared to 20162018 primarily due to higher plant-in-service.average long-term debt balances.


Taxes, other than income taxes increased $7 million, or 4%, for 2017 compared to 2016 primarily due to higher assessed property values.

Allowance for borrowed and equity fundsdecreased $11 increased $55 million, or 26%104%, for 20172019 compared to 20162018 primarily due to a true-uphigher qualified construction work-in-progress balances.

Interest and dividend income increased $6 million, or 40%, for 2019 compared to 2018 primarily due to higher average cash and cash equivalents balances.

Other, net increased $24 million, or 300% for 2019 compared to 2018 primarily due to the prior year pension settlement charge of AFUDC rates.$22 million and higher cash surrender value of company owned life insurance policies of $5 million, partially offset by higher non-service cost components of pension and other postretirement expense of $11 million.


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Income tax expense increased $20$56 million or 6%, for 20172019 compared to 20162018 and the effective tax rate was 32%7% and 31%1% for 20172019 and 2016,2018, respectively. The effective tax rate increased primarily due to lower production tax credits associated with PacifiCorp's wind-powered generating facilities as a result of lower amortization of excess deferred income taxes in 2019 and expiring PTCs, slightly offset by the expirationeffects of the 10-year production tax credit periods for certain wind-powered generating facilities, of which 243 MW and 100 MW of net owned capacity expired in 2017 and 2016, respectively.

Year Ended December 31, 2016 Compared to Year Ended December 31, 2015

Gross margin increased $86 million, or 3%, for 2016 compared to 2015 primarily due to:
$71ratemaking. In 2019, $91 million of lower purchased electricity costs primarilyOregon's allocated excess deferred income taxes was amortized pursuant to the 2019 Oregon RAC proceeding, whereby a portion of Oregon's allocated excess deferred income taxes was used to accelerate depreciation for Oregon's share of certain retired wind equipment due to lower average market prices;
$57repowering. In 2018, $127 million of higher retail revenues primarily due to higher retail rates;
$37 million of lower coal costs primarily due to decreased generation of $95 million, partially offset by higher average unit costs of $31 million and charges related to damaged longwall mining equipment of $20 million; and
$22 million of lower natural gas costs due to lower market prices, partially offset by increased generation.
The increases above were partially offset by:
$90 million of lower wholesale electricity revenue due to lower volumes and prices.

Operations and maintenance decreased $18 million, or 2%, for 2016 compared to 2015 primarily due to lower plant maintenance costs associated with reduced generation and lower labor and benefit costs due to lower headcount, partially offset by a Washington rate case decision disallowing returns on recent selective catalytic reduction projects.

Depreciation and amortization increased $13 million, or 2%, for 2016 compared to 2015 primarily due to higher plant in-service.

Taxes, other thanUtah's allocated excess deferred income taxes increased $5 million, or 3%, for 2016 comparedwas amortized pursuant to 2015 duea 2017 Tax Reform settlement approved by the UPSC, whereby a portion of Utah's allocated excess deferred incomes taxes was used to higher property taxes primarily from higher assessed property values.accelerate depreciation on Utah's share of certain coal-fueled units.


Allowance for borrowed and equity funds decreased $9 million, or 18%, for 2016 compared to 2015 primarily due to lower qualified construction work-in-progress balances.

Income tax expense increased $12 million, or 4%, for 2016 compared to 2015 and the effective tax rate was 31% and 32% for 2016 and 2015, respectively. The decrease in the effective tax rate is due to higher production tax credits associated with PacifiCorp's wind-powered generating facilities.

Liquidity and Capital Resources


As of December 31, 2017,2020, PacifiCorp's total net liquidity was as follows (in millions):

Cash and cash equivalents $14
   
Credit facilities(1)
 1,000
Less:  
Short-term debt (80)
Tax-exempt bond support (130)
Net credit facilities 790
   
Total net liquidity $804
   
Credit facilities:  
Maturity dates 2020

(1)Cash and cash equivalents$13 
Refer to Note 6 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding PacifiCorp'sCredit facilities(1)
1,200 
Less:
Short-term debt(93)
Tax-exempt bond support(218)
Net credit facilities.facilities889 
Total net liquidity$902 
Credit facilities:
Maturity dates2022

(1)Refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding PacifiCorp's credit facilities.
Operating Activities


Net cash flows from operating activities for the years ended December 31, 20172020 and 20162019 were $1.6 billion and $1.6$1.5 billion, respectively. Positive variance from a prior year paymentThe increase is primarily due to lower purchased power prices, lower cash paid for USA Power litigation, higher receiptsincome taxes and lower operating expense payments due to timing, partially offset by lower collections from wholesale and retail customers and lowerhigher fuel expense payments offset by current year higher cash payments for purchased power, income taxes and pension contributions.due to timing.


Net cash flows from operating activities for the years ended December 31, 20162019 and 20152018 were $1.6$1.5 billion and $1.7$1.8 billion, respectively. The change wasdecrease is primarily due to higher cash paidpayments for income taxes, paymentpurchased power, timing of payments for USA Power litigationoperating expenses and lower receipts from wholesale electricity sales, partially offset by lower purchased electricity payments, lower fuel payments, higher receipts from retail customers and lower cash collateral posted for derivative contracts.customers.



PacifiCorp's income tax cash flows benefited in 2017, 2016, and 2015 from 50% bonus depreciation on qualifying assets placed in service and from production tax credits earned on qualifying projects. In December 2017, the 2017 Tax Reform was enacted which, among other items, reduces the federal corporate tax rate from 35% to 21% effective January 1, 2018 and eliminates bonus depreciation on qualifying regulated utility assets acquired after September 27, 2017, but did not impact production tax credits. PacifiCorp will be proposing to reduce customer rates for a portion of the lower annual income tax expense resulting from the decrease in federal tax rates, and deferring the remainder to offset other costs as approved by the regulatory bodies. PacifiCorp expects lower revenue and income taxes as well as lower bonus depreciation benefits as a result of the 2017 Tax Reform and related regulatory treatment. PacifiCorp does not expect the 2017 Tax Reform and related regulatory treatment to have a material adverse impact on its cash flows, subject to actual regulatory outcomes. Refer to Regulatory Matters in Item 1 of this Form 10-K for further discussion of regulatory matters associated with the 2017 Tax Reform. The timing of PacifiCorp's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.


Investing Activities


Net cash flows from investing activities for the years ended December 31, 20172020 and 20162019 were $(729) million$(2.5) billion and $(869) million,$(2.2) billion, respectively. The changeincrease in net cash outflows from investing activities is mainly reflects a current year decreasedue to an increase in capital expenditures of $134 million.$365 million, partially offset by proceeds from the settlement of notes receivable of $25 million associated with the sale of certain Utah mining assets in 2015. Refer to "Future Uses of Cash" for discussion of capital expenditures.


Net cash flows from investing activities for the years ended December 31, 20162019 and 20152018 were $(869) million$(2.2) billion and $(918) million,$(1.3) billion, respectively. The change primarily reflects, a current yearincrease in net distributioncash outflows from investing activities is mainly due to an affiliate of $26 million, a prior year service territory acquisition of $23 million, and a decreaseincrease in capital expenditures of $13 million, partially offset by a prior year equipment sale to an affiliate of $13$918 million.



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Financing Activities


Short-term Debt and Credit Facilities


Regulatory authorities limit PacifiCorp to $1.5 billion of short-term debt. As of December 31, 2017,2020, PacifiCorp had $80$93 million of short-term debt outstanding at a weighted average interest rate of 1.83%, and as0.16%. As of December 31, 2016,2019, PacifiCorp had $270$130 million of short-term debt outstanding at a weighted average interest rate of 0.96%2.05%. For further discussion, refer to Note 67 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.


Long-term Debt


In April 2020, PacifiCorp currently has regulatory authority fromissued $400 million of its 2.70% First Mortgage Bonds due 2030 and $600 million of its 3.30% First Mortgage Bonds due 2051. PacifiCorp used the OPUCnet proceeds to fund capital expenditures, primarily for renewable resources and the IPUC to issue an additional $1.325 billion of long-term debt. PacifiCorp must make a notice filing with the WUTC prior to any future issuance. PacifiCorp currently has an effective shelf registration statement with the SEC to issue up to $1.325 billion additional first mortgage bonds through January 2019.associated transmission projects, and for general corporate purposes.


PacifiCorp made repayments on long-term debt excluding repayments for lease obligations, totaling $52$38 million and $66$350 million during the years ended December 31, 20172020 and 2016,2019, respectively.

As of December 31, 2017, PacifiCorp had $216 million of letters of credit providing credit enhancement and liquidity support for variable-rate tax-exempt bond obligations totaling $213 million plus interest. These letters of credit were fully available as of December 31, 2017 and expire periodically through March 2019.


PacifiCorp's Mortgage and Deed of Trust creates a lien on most of PacifiCorp's electric utility property, allowing the issuance of bonds based on a percentage of utility property additions, bond credits arising from retirement of previously outstanding bonds or deposits of cash. The amount of bonds that PacifiCorp may issue generally is also subject to a net earnings test. As of December 31, 2017,2020, PacifiCorp estimated it would be able to issue up to $10.1$10.8 billion of new first mortgage bonds under the most restrictive issuance test in the mortgage. Any issuances are subject to market conditions and amounts may be further limited by regulatory authorizations or commitments or by covenants and tests contained in other financing agreements. PacifiCorp also has the ability to release property from the lien of the mortgage on the basis of property additions, bond credits or deposits of cash.


    Credit Facilities

In 2020, PacifiCorp's credit facility support for outstanding variable rate tax-exempt bond obligations decreased by $38 million due to maturities.

In 2019, PacifiCorp completed a re-offering of variable rate tax-exempt bond obligations totaling $168 million, involving the cancellation, at PacifiCorp's request, of $170 million of letters of credit support by the issuing banks. As a result, PacifiCorp's credit facility support for outstanding variable rate tax-exempt bond obligations increased by $168 million.

    Debt Authorizations

PacifiCorp currently has regulatory authority from the OPUC and the IPUC to issue an additional $3 billion of long-term debt. PacifiCorp must make a notice filing with the WUTC prior to any future issuance. PacifiCorp currently has an effective shelf registration statement with the SEC to issue an indeterminate amount of first mortgage bonds through September 2023.

Preferred Stock


As of December 31, 20172020 and 2016,2019, PacifiCorp had non-redeemable preferred stock outstanding with an aggregate stated value of $2 million.



Common Shareholder's Equity


In February 2018, PacifiCorp declared a dividend of $250 million payable to PPW Holdings LLC in March 2018.

In 20172020 and 2016,2019, PacifiCorp declared and paid dividends of $600$— million and $875$175 million, respectively, to PPW Holdings LLC.


Capitalization


PacifiCorp manages its capitalization and liquidity position to maintain a prudent capital structure with an objective of retaining strong investment grade credit ratings, which is expected to facilitate continuing access to flexible borrowing arrangements at favorable costs and rates. This objective, subject to periodic review and revision, attempts to balance the interests of all shareholders, customers and creditors and provide a competitive cost of capital and predictable capital market access.


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Under existing or prospective authoritative accounting guidance, such as guidance pertaining to consolidations and leases, it is possible that new purchase power and gas agreements, transmission arrangements or amendments to existing arrangements may be accounted for as capital lease obligations or debt on PacifiCorp's financial statements. While PacifiCorp has successfully amended covenants in financing arrangements that may be impacted, it may be more difficult for PacifiCorp to comply with its capitalization targets or regulatory commitments concerning minimum levels of common equity as a percentage of capitalization. This may lead PacifiCorp to seek amendments or waivers under financing agreements and from regulators, delay or reduce dividends or spending programs, seek additional new equity contributions from its indirect parent company, BHE, or take other actions.


Future Uses of Cash


PacifiCorp has available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, capital contributions and other sources. These sources are expected to provide funds required for current operations, capital expenditures, debt retirements and other capital requirements. The availability and terms under which PacifiCorp has access to external financing depends on a variety of factors, including PacifiCorp's credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry.


Capital Expenditures


PacifiCorp has significant future capital requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital.


Historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ended December 31 are as follows (in millions):

HistoricalForecast
201820192020202120222023
Wind generation$352 $933 $1,277 $101 $40 $632 
Electric distribution404 413 613 537 428 374 
Electric transmission230 612 405 461 961 1,173 
Other271 217 245 618 482 371 
Total$1,257 $2,175 $2,540 $1,717 $1,911 $2,550 

 Historical Forecast
 2015 2016 2017 2018 2019 2020
            
Transmission system investment$137
 $94
 $115
 $135
 $305
 $438
Environmental114
 58
 27
 19
 16
 21
Wind investment
 110
 11
 547
 974
 741
Operating and other665
 641
 616
 511
 805
 602
Total$916
 $903
 $769
 $1,212
 $2,100
 $1,802


PacifiCorp's 2019 IRP identified a significant increase in renewable resource generation and associated transmission. PacifiCorp has included an estimate of the 2019 IRP resources in its forecast capital expenditures for 2021 through 2023. These estimates are likely to change as a result of the RFP process. PacifiCorp's historical and forecast capital expenditures include the following:


Wind generation includes both growth projects and operating expenditures. Growth projects include:
Construction of wind-powered generating facilities at PacifiCorp totaled $1,148 million for 2020 and $338 million for 2019 and includes 674 MWs of new wind-powered generating facilities that were placed in-service in 2020 and 516 MWs expected to be placed in-service in 2021. The energy production for these new facilities is expected to qualify for 100% of the federal PTCs available for ten years once the equipment is placed in-service. PacifiCorp's 2019 IRP identified 1,920 MWs of new wind-powered generating resources that are expected to come online in 2024. PacifiCorp anticipates that the additional new wind-powered generation will be a mixture of owned and contracted resources. Planned spending for the wind-powered generating facilities totals $43 million in 2021 and $533 million in 2023.
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Repowering existing wind-powered generating facilities at PacifiCorp totaled $125 million in 2020 and $585 million in 2019. Certain repowering projects were placed in-service in 2019 and 2020 with the remaining repowering projects expected to be placed in-service in 2021. The energy production from such repowered facilities is expected to qualify for 100% of the federal renewable electricity PTCs available for ten years following each facility's return to service. Planned spending for certain existing and new wind-powered generating facilities totals $42 million in 2021, $19 million in 2022 and $64 million in 2023.
Electric distribution includes both growth projects and operating expenditures. Operating expenditures includes planned spend on wildfire mitigation, wildfire damage restoration and storm damage repairs. Expenditures for these items totaled $187 million in 2020, and planned spending totals $156 million in 2021, $115 million in 2022 and $108 million in 2023. Remaining investments relate to expenditures for new connections and distribution.
Electric transmission includes both growth projects and operating expenditures. Transmission system investment through 2020 primarily reflects main grid reinforcement costs and costs for the 140-mile 500 kV500-kV Aeolus-Bridger/Anticline transmission line, a major segment of PacifiCorp's Energy Gateway Transmission Expansion Programexpansion program, placed in-service in November 2020. Transmission system investment going forward primarily reflects investment in additional Energy Gateway Transmission segments expected to be placed in-service in 2020.in-service. Planned spending for the Aeolus-Bridger/Anticline lineadditional Energy Gateway Transmission segments totals $40$177 million in 2018, $2202021, $674 million in 20192022, and $346$873 million in 2020.2023.

EnvironmentalOther includes the installation of new or the replacement of existing emissions control equipment at certain generating facilities, including installation or upgrade of selective catalytic reduction control systems and low nitrogen oxide burners to reduce nitrogen oxides, mercury emissions control systems, as well as expenditures for the management of coal combustion residuals and effluent limitation.

2016 and 2017 wind investment includes costs for new wind plant constructionboth growth projects and repowering of certain existing wind plants. The repowering projects entail the replacement of significant components of older turbines. Planned spendingoperating expenditures. Expenditures for the repowering totals $347 million in 2018, $553 million in 2019 and $153information technology totaled $75 million in 2020, and for the new wind-powered generating facilitiesplanned spending totals $200$140 million in 2018, $4212021, $151 million in 20192022 and $588$129 million in 2020, plus approximately $300 million for an assumed vendor supplied financing transaction to be paid in 2020 that is not included in the table above. The repowering projects are expected to be placed in-service at various dates in 2019 and 2020. The new wind-powered generating facilities are also expected to be placed in-service in 2020. The energy production from the repowered and new wind-powered generating facilities is expected to qualify for 100% of the federal renewable electricity production tax credit available for 10 years once the equipment is placed in-service.

2023. Remaining investments relate to operating projects that consist of routine expenditures for generation transmission, distribution and other infrastructure needed to serve existing and expected demand, including upgrades to customer meters in Oregon, California, Utah, and Idaho.demand.

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Obligations and Commitments



Contractual Obligations


PacifiCorp has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes PacifiCorp's material contractual cash obligations as of December 31, 20172020 (in millions):

Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
Long-term debt, including interest:
Fixed-rate obligations$814 $1,785 $1,330 $10,556 $14,485 
Variable-rate obligations(1)
— — 218 — 218 
Short-term debt, including interest93 — — — 93 
Operating and finance lease liabilities12 28 
Interest payments on operating and finance lease liabilities15 
Easements14 27 26 278 345 
Asset retirement obligations13 15 30 442 500 
Power purchase agreements - commercially operable(2):
Electricity commodity contracts179 307 270 1,298 2,054 
Electricity capacity contracts30 61 67 617 775 
Electricity mixed contracts14 28 27 113 182 
Power purchase agreements - non-commercially operable(2)
25 50 54 456 585 
Transmission104 187 123 409 823 
Fuel purchase agreements(2):
Natural gas supply and transportation97 56 53 173 379 
Coal supply and transportation539 738 404 438 2,119 
Other purchase obligations190 109 71 214 584 
Other long-term liabilities(3)
26 14 14 55 109 
Total contractual cash obligations$2,148 $3,386 $2,693 $15,067 $23,294 

(1)Consists of principal and interest for tax-exempt bond obligations with interest rates scheduled to reset periodically prior to maturity. Future variable interest rates are assumed to equal December 31, 2020 rates. Refer to "Interest Rate Risk" in Item 7A of this Form 10-K for additional discussion related to variable-rate liabilities.
(2)Commodity contracts are agreements for the delivery of energy. Capacity contracts are agreements that provide rights to energy output, generally of a specified generating facility. Forecasted or other applicable estimated prices were used to determine total dollar value of the commitments. PacifiCorp has several contracts for purchases of electricity from facilities that have not yet achieved commercial operation. To the extent any of these facilities do not achieve commercial operation, PacifiCorp has no obligation to the counterparty.
(3)Includes environmental and hydroelectric relicensing commitments recorded in the Consolidated Balance Sheets that are contractually or legally binding. Excludes regulatory liabilities and employee benefit plan obligations that are not legally or contractually fixed as to timing and amount. Deferred income taxes are excluded since cash payments are based primarily on taxable income for each year. Uncertain tax positions are also excluded because the amounts and timing of cash payments are not certain.

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 Payments Due By Periods
 2018 2019-2020 2021-2022 2023 and Thereafter Total
          
Long-term debt, including interest:         
Fixed-rate obligations$855
 $974
 $1,609
 $8,006
 $11,444
Variable-rate obligations(1)
91
 47
 8
 226
 372
Short-term debt, including interest80
 
 
 
 80
Capital leases, including interest4
 7
 8
 18
 37
Operating leases and easements7
 14
 13
 97
 131
Asset retirement obligations25
 31
 40
 335
 431
Power purchase agreements - commercially operable(2):
         
Electricity commodity contracts231
 242
 223
 871
 1,567
Electricity capacity contracts37
 70
 60
 655
 822
Electricity mixed contracts8
 14
 12
 48
 82
Power purchase agreements - non-commercially operable(2)
9
 44
 53
 451
 557
Transmission112
 162
 88
 428
 790
Fuel purchase agreements(2):
         
Natural gas supply and transportation40
 56
 53
 233
 382
Coal supply and transportation655
 1,154
 737
 1,035
 3,581
Other purchase obligations121
 88
 39
 80
 328
Other long-term liabilities(3)
15
 18
 13
 65
 111
Total contractual cash obligations$2,290
 $2,921
 $2,956
 $12,548
 $20,715



(1)Consists of principal and interest for tax-exempt bond obligations with interest rates scheduled to reset periodically prior to maturity. Future variable interest rates are assumed to equal December 31, 2017 rates. Refer to "Interest Rate Risk" in Item 7A of this Form 10-K for additional discussion related to variable-rate liabilities.
(2)Commodity contracts are agreements for the delivery of energy. Capacity contracts are agreements that provide rights to energy output, generally of a specified generating facility. Forecasted or other applicable estimated prices were used to determine total dollar value of the commitments. PacifiCorp has several contracts for purchases of electricity from facilities that have not yet achieved commercial operation. To the extent any of these facilities do not achieve commercial operation, PacifiCorp has no obligation to the counterparty.
(3)Includes environmental and hydroelectric relicensing commitments recorded in the Consolidated Balance Sheets that are contractually or legally binding. Excludes regulatory liabilities and employee benefit plan obligations that are not legally or contractually fixed as to timing and amount. Deferred income taxes are excluded since cash payments are based primarily on taxable income for each year. Uncertain tax positions are also excluded because the amounts and timing of cash payments are not certain.

COVID-19

In March 2020, COVID‑19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by PacifiCorp. While COVID-19 has impacted PacifiCorp's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. The states in which PacifiCorp operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by PacifiCorp related to customer collection activity and suspension of disconnections for non-payment, PacifiCorp has seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for the deferral or recovery of certain costs incurred in responding to COVID‑19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion.

PacifiCorp's business has been deemed essential and its employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain its electric generation, transmission and distribution system. In response to the effects of COVID‑19, PacifiCorp has implemented its business continuity plan to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID‑19.

Regulatory Matters


PacifiCorp is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further discussioninformation regarding PacifiCorp's general regulatory framework and current regulatory matters.



Environmental Laws and Regulations


PacifiCorp is subject to federal, state local and foreignlocal laws and regulations regarding climate change, wildfire prevention and mitigation, RPS, air and water quality, RPS, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. PacifiCorp believes it is in material compliance with all applicable laws and regulations, although many are subject to interpretation that may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and PacifiCorp is unable to predict the impact of the changing laws and regulations on its operations and financial results.


Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations and "Liquidity and Capital Resources" for PacifiCorp's forecast environmental-related capital expenditures.regulations.


Collateral and Contingent Features


Debt and preferred securities of PacifiCorp are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of PacifiCorp's ability to, in general, meet the obligations of its issued debt or preferred securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time. As of December 31, 2017,2020, PacifiCorp's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt from the three recognized credit rating agencies were investment grade.


PacifiCorp has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt and a change in ratings is not an event of default under the applicable debt instruments. PacifiCorp's unsecured revolving credit facilities do not require the maintenance of a minimum credit rating level to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.
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Certain authorizations or exemptions by regulatory commissions for the issuance of securities are valid as long as PacifiCorp maintains investment grade ratings on senior secured debt. A downgrade below that level would necessitate new regulatory applications and approvals.


In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance" if there is a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2017,2020, PacifiCorp would have been required to post $233$161 million of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. Refer to Note 1112 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for a discussion of PacifiCorp's collateral requirements specific to PacifiCorp's derivative contracts.


Limitations

In addition to PacifiCorp's capital structure objectives, its debt capacity is also governed by its contractual and regulatory commitments.

PacifiCorp's revolving credit and other financing agreements contain customary covenants and default provisions, including a covenant not to exceed a specified debt-to-capitalization ratio of 0.65 to 1.0 as of the last day of each fiscal quarter. Management believes that PacifiCorp could have borrowed an additional $6.9 billion as of December 31, 2017 without exceeding this threshold. Any additional borrowings would be subject to market conditions, and amounts may be further limited by regulatory authorizations or by covenants and tests contained in other financing agreements.


The state regulatory orders that authorized BHE's acquisition of PacifiCorp contain restrictions on PacifiCorp's ability to pay dividends to the extent that they would reduce PacifiCorp's common equity below specified percentages of defined capitalization. As of December 31, 2017, the most restrictive of these commitments prohibits PacifiCorp from making any distribution to PPW Holdings LLC or BHE without prior state regulatory approval to the extent that it would reduce PacifiCorp's common stock equity below 44% of its total capitalization, excluding short-term debt and current maturities of long-term debt. The terms of this commitment treat 50% of PacifiCorp's remaining balance of preferred stock in existence prior to the acquisition of PacifiCorp by BHE as common equity. As of December 31, 2017, PacifiCorp's actual common stock equity percentage, as calculated under this measure, was 54%, and management believes that PacifiCorp could have declared a dividend of $2.5 billion under this commitment.

These commitments also restrict PacifiCorp from making any distributions to either PPW Holdings LLC or BHE if PacifiCorp's senior unsecured debt is rated BBB- or lower by Standard & Poor's Rating Services or Fitch Ratings or Baa3 or lower by Moody's Investor Service, as indicated by two of the three rating services. As of December 31, 2017, PacifiCorp met the minimum required senior unsecured debt ratings for making distributions.

Inflation


Historically, overall inflation and changing prices in the economies where PacifiCorp operates have not had a significant impact on PacifiCorp's consolidated financial results. PacifiCorp operates under a cost-of-service based rate structure administered by various state commissions and the FERC. Under this rate structure, PacifiCorp is allowed to include prudent costs in its rates, including the impact of inflation. PacifiCorp attempts to minimize the potential impact of inflation on its operations through the use of energy and other cost adjustment clauses and billtariff riders, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.


Off-Balance Sheet Arrangements


PacifiCorp from time to time enters into arrangements in the normal course of business to facilitate commercial transactions with third parties that involve guarantees or similar arrangements. PacifiCorp currently has indemnification obligations in connection with the sale or transfer of certain assets. In addition, PacifiCorp evaluates potential obligations that arise out of variable interests in unconsolidated entities, determined in accordance with authoritative accounting guidance. PacifiCorp believes that the likelihood that it would be required to perform or otherwise incur any significant losses associated with any of these obligations is remote. Refer to Notes 1011 and 1719 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for more information on these obligations and arrangements.


New Accounting Pronouncements

For a discussion of new accounting pronouncements affecting PacifiCorp, refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Critical Accounting Estimates


Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by PacifiCorp's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with PacifiCorp's Summary of Significant Accounting Policies included in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.


Accounting for the Effects of Certain Types of Regulation


PacifiCorp prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, PacifiCorp defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in rates occur.



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PacifiCorp continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit PacifiCorp's ability to recover its costs. PacifiCorp believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future rates, the related regulatory assets and liabilities will be written offrecognized in net income, returned to net incomecustomers or re-established as accumulated other comprehensive income (loss).AOCI. Total regulatory assets were $1.061$1.4 billion and total regulatory liabilities were $3.071$2.8 billion as of December 31, 2017.2020. Refer to Note 56 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's regulatory assets and liabilities.


Derivatives


PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. PacifiCorp does not engage in a material amount of proprietary trading activities.

PacifiCorp has established a risk management process that is designed to identify, assess, monitor, report, manage and mitigatereport each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, PacifiCorp employs a number of differentuses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to manageeffectively secure future supply or sell future production generally at fixed prices. PacifiCorp manages its commodity priceinterest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and at times,by monitoring market changes in interest rates. Additionally, PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. PacifiCorp does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices and interest rates.prices. As of December 31, 2017,2020, PacifiCorp had no derivative contracts outstanding related to interest rate risk. Refer to Notes 1112 and 1213 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's derivative contracts.


Measurement Principles


Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by accounting principles generally accepted in the United States of America. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first sixthree years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. As of December 31, 2017,2020, PacifiCorp had a net derivative liability of $104$17 million related to contracts valued using either quoted prices or forward price curves based upon observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first sixthree years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The assumptions used in these models are critical because any changes in assumptions could have a significant impact on the estimated fair value of the contracts. As of December 31, 2017,2020, PacifiCorp had a net derivative asset of $-$— million related to contracts where PacifiCorp uses internal models with significant unobservable inputs.


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Classification and Recognition Methodology


PacifiCorp's derivative contracts are probable of inclusion in rates and changes in the estimated fair value of derivative contracts are generally recorded as regulatory assets. Accordingly, amounts are generally not recognized in earnings until the contracts are settled and the forecasted transaction has occurred. As of December 31, 2017,2020, PacifiCorp had $101$17 million recorded as a regulatory asset related to derivative contracts on the Consolidated Balance Sheets.



Pension and Other Postretirement Benefits


PacifiCorp sponsors defined benefit pension and other postretirement benefit plans that cover the majority of its employees. In addition, PacifiCorp contributes to a joint trustee pension plan for benefits offered to certain bargaining units.as described in Note 10. PacifiCorp recognizes the funded status of itsthese defined benefit pension and other postretirement benefit plans on the Consolidated Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2017,2020, PacifiCorp recognized a net liability totaling $139$118 million for the funded status of its defined benefit pension and other postretirement benefit plans. As of December 31, 2017,2020, amounts not yet recognized as a component of net periodic benefit cost that were included in net regulatory assets and accumulated other comprehensive loss totaled $407$422 million and $20$25 million, respectively.


The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rate and expected long-term rate of return on plan assets. These key assumptions are reviewed annually and modified as appropriate. PacifiCorp believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 910 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for disclosures about PacifiCorp's defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2017.2020.


PacifiCorp chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.


In establishing its assumption as to the expected long-term rate of return on plan assets, PacifiCorp evaluates the investment allocation between return-seeking investment and fixed income securities based on the funded status of the plan and utilizes the asset allocation and return assumptions for each asset class based on forward-looking views of the financial markets and historical performance. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. PacifiCorp regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.


The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Consolidated Financial Statements would be as follows (in millions):

Other Postretirement
Pension PlansBenefit Plan
+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020 Benefit Obligations:
Discount rate$(63)$69 $(15)$17 
Effect on 2020 Periodic Cost:
Discount rate$— $— $$(1)
Expected rate of return on plan assets(5)(2)
   Other Postretirement
 Pension Plans Benefit Plan
 +0.5% -0.5% +0.5% -0.5%
        
Effect on December 31, 2017 Benefit Obligations:       
Discount rate$(65) $71
 $(14) $16
        
Effect on 2017 Periodic Cost:       
Discount rate$
 $(1) $1
 $
Expected rate of return on plan assets(5) 5
 (1) 1


A variety of factors affect the funded status of the plans, including asset returns, discount rates, mortality assumptions, plan changes and PacifiCorp's funding policy for each plan.



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Income Taxes


In determining PacifiCorp's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by PacifiCorp's various regulatory jurisdictions.commissions. PacifiCorp's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. PacifiCorp recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of PacifiCorp's federal, state and local income tax examinations is uncertain, PacifiCorp believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on PacifiCorp's consolidated financial results. PacifiCorp's unrecognized tax benefits are primarily included in other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Note 89 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's income taxes.


It is probable that PacifiCorp will pass income tax benefits and expense related to the federal tax rate change from 35% to 21%, as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to its customers.their customers in certain state jurisdictions. As of December 31, 2017,2020, these amounts were recognized as a net regulatory liability of $1.96$1.5 billion and will be included in regulated rates when the temporary differences reverse.


Revenue Recognition - Unbilled Revenue


Revenue is recognized as electricity is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $255$254 million as of December 31, 2017.2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Estimates are reversed in the following month and actual revenue is recorded based on subsequent meter readings.


Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

PacifiCorp's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. PacifiCorp's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which PacifiCorp transacts. The following discussion addresses the significant market risks associated with PacifiCorp's business activities. PacifiCorp has established guidelines for credit risk management. Refer to Notes 2 and 1112 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's contracts accounted for as derivatives.

Risk Management


PacifiCorp has a risk management committee that is responsible for the oversight of market and credit risk relating to the commodity transactions of PacifiCorp. To limit PacifiCorp's exposure to market and credit risk, the risk management committee recommends, and executive management establishes, policies, limits and approved products, which are reviewed frequently to respond to changing market conditions.


Risk is an inherent part of PacifiCorp's business and activities. PacifiCorp has established a risk management process that is designed to identify, assess, monitor, report, manage and mitigatereport each of the various types of risk involved in PacifiCorp's business. The risk management policy governs energy transactions and is designed for hedging PacifiCorp's existing energy and asset exposures, and to a limited extent, the policy permits arbitrage and trading activities to take advantage of market inefficiencies. The policy also governs the types of transactions authorized for use and establishes guidelines for credit risk management and management information systems required to effectively monitor such transactions. PacifiCorp's risk management policy provides for the use of only those contracts that have a similar volume or price relationship to its portfolio of assets, liabilities or anticipated transactions.




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Commodity Price Risk


PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as PacifiCorp has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. PacifiCorp does not engage in a material amount of proprietary trading activities. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. PacifiCorp's exposure to commodity price risk is generally limited by its ability to include commodity costs in rates, which is subject to regulatory lag that occurs between the time the costs are incurred and when the costs are included in rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.


PacifiCorp measures the market risk in its electricity and natural gas portfolio daily, utilizing a historical Value-at-Risk ("VaR") approach and other measurements of net position. PacifiCorp also monitors its portfolio exposure to market risk in comparison to established thresholds and measures its open positions subject to price risk in terms of quantity at each delivery location for each forward time period. VaR computations for the electricity and natural gas commodity portfolio are based on a historical simulation technique, utilizing historical price changes over a specified (holding) period to simulate potential forward energy market price curve movements to estimate the potential unfavorable impact of such price changes on the portfolio positions. The quantification of market risk using VaR provides a consistent measure of risk across PacifiCorp's continually changing portfolio. VaR represents an estimate of possible changes at a given level of confidence in fair value that would be measured on its portfolio assuming hypothetical movements in forward market prices and is not necessarily indicative of actual results that may occur.


PacifiCorp's VaR computations utilize several key assumptions. The calculation includes short-term commodity contracts, the expected resource and demand obligations from PacifiCorp's long-term contracts, the expected generation levels from PacifiCorp's generation assets and the expected retail and wholesale load levels. The portfolio reflects flexibility contained in contracts and assets, which accommodate the normal variability in PacifiCorp's demand obligations and generation availability. These contracts and assets are valued to reflect the variability PacifiCorp experiences as a load-serving entity. Contracts or assets that contain flexible elements are often referred to as having embedded options or option characteristics. These options provide for energy volume changes that are sensitive to market price changes. Therefore, changes in the option values affect the energy position of the portfolio with respect to market prices, and this effect is calculated daily. When measuring portfolio exposure through VaR, these position changes that result from the option sensitivity are held constant through the historical simulation. PacifiCorp's VaR methodology is based on a 36-month forward position, 95% confidence interval and one-day holding period.


As of December 31, 2017,2020, PacifiCorp's estimated potential one-day unfavorable impact on fair value of the electricity and natural gas commodity portfolio over the next 36 months was $10$14 million, as measured by the VaR computations described above. The minimum, average and maximum daily VaR (one-day holding periods) were as follows for the year ended December 31 (in millions):

2020
Minimum VaR (measured)$
Average VaR (calculated)10 
Maximum VaR (measured)19 
 2017
Minimum VaR (measured)$6
Average VaR (calculated)8
Maximum VaR (measured)14


PacifiCorp maintained compliance with its VaR limit procedures during the year ended December 31, 2017.2020. Changes in markets inconsistent with historical trends or assumptions used could cause actual results to exceed estimated VaR levels.




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Fair Value of Derivatives


The table that follows summarizes PacifiCorp's price risk on commodity contracts accounted for as derivatives, excluding collateral netting of $74$24 million and $69$47 million as of December 31, 20172020 and 2016,2019, respectively, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices by the expected volumes for these contracts as of that date. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions):

Fair Value -Estimated Fair Value after
 Net AssetHypothetical Change in Price
(Liability)10% increase10% decrease
As of December 31, 2020:
Total commodity derivative contracts$(17)$$(39)
As of December 31, 2019
Total commodity derivative contracts$(63)$(44)$(82)
 Fair Value - Estimated Fair Value after
  Net Asset Hypothetical Change in Price
 (Liability) 10% increase 10% decrease
As of December 31, 2017:     
Total commodity derivative contracts$(104) $(102) $(106)
      
As of December 31, 2016     
Total commodity derivative contracts$(77) $(59) $(95)


PacifiCorp's commodity derivative contracts are generally recoverable from customers in rates; therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose PacifiCorp to earnings volatility. As of December 31, 20172020 and 2016,2019, a regulatory asset of $101$17 million and $73$62 million, respectively, was recorded related to the net derivative liability of $104$17 million and $77$63 million, respectively. Consolidated financial results would be negatively impacted if the costs of wholesale electricity, natural gas or fuel are higher or the level of wholesale electricity sales are lower than what is included in rates, including the impacts of adjustment mechanisms.


Interest Rate Risk


PacifiCorp is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, PacifiCorp's fixed-rate long-term debt does not expose PacifiCorp to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if PacifiCorp were to reacquire all or a portion of these instruments prior to their maturity. PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. The nature and amount of PacifiCorp's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 6, 7, 8 and 1213 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of PacifiCorp's short- and long-term debt.


As of December 31, 20172020 and 2016,2019, PacifiCorp had short- and long-term variable-rate obligations totaling $442$310 million and $662$385 million, respectively that expose PacifiCorp to the risk of increased interest expense in the event of increases in short-term interest rates. The market risk related to PacifiCorp's variable-rate debt as of December 31, 20172020 is not hedged. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on PacifiCorp's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 20172020 and 2016.2019.



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Credit Risk


PacifiCorp is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent PacifiCorp's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, PacifiCorp analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, PacifiCorp enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, PacifiCorp exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.



As of December 31, 2017,2020, PacifiCorp's aggregate credit exposure fromwith wholesale activities totaled $127 million, based on settlementenergy supply and mark-to-market exposures, net of collateral. As of December 31, 2017, $125 million, or 98.5%, of PacifiCorp's credit exposure was withmarketing counterparties included counterparties having investmentnon-investment grade, internally rated credit ratings by either Moody's Investor Service or Standard & Poor's Rating Services. Asratings. Substantially all of December 31, 2017, three counterparties comprised $91 million, or 72%, of the aggregate credit exposure. The threethese non-investment grade, internally rated counterparties are rated investment grade by Moody's Investor Serviceassociated with long-duration solar and Standard & Poor's Rating Services,wind power purchase agreements from facilities that have not yet achieved commercial operation and for which PacifiCorp ishas no obligation should the facilities not aware of any factors that would likely result in a downgrade of the counterparties' credit ratings to below investment grade over the remaining term of transactions outstanding as of December 31, 2017.achieve commercial operation.



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Item 8.Financial Statements and Supplementary Data
Item 8.Financial Statements and Supplementary Data




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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of
PacifiCorp
Portland, Oregon
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of PacifiCorp and subsidiaries ("PacifiCorp") as of December 31, 20172020 and 2016,2019, the related consolidated statements of operations, comprehensive income, changes in shareholders' equity, and cash flows for each of the three years in the period ended December 31, 2017,2020, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the CompanyPacifiCorp as of December 31, 20172020 and 2016,2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2020, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Company'sPacifiCorp's management. Our responsibility is to express an opinion on the Company'sPacifiCorp's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the CompanyPacifiCorp in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The CompanyPacifiCorp is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’sPacifiCorp's internal control over financial reporting. Accordingly, we express no such opinion.


Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.



Critical Audit Matters

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Regulatory Matters - Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 6 to the financial statements

Critical Audit Matter Description

PacifiCorp is subject to rate regulation by state public service commissions as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to rates in the respective service territories where PacifiCorp operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense; and income tax expense (benefit).
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Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow PacifiCorp an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While PacifiCorp has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit PacifiCorp's ability to recover its costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated PacifiCorp's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected PacifiCorp's filings with the Commissions and the filings with the Commissions by intervenors that may impact PacifiCorp's future rates, for any evidence that might contradict management's assertions.

We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

California and Oregon 2020 Wildfires – Contingencies – See Note 14 to the financial statements

Critical Audit Matter Description

PacifiCorp has loss contingencies related to the California and Oregon 2020 wildfires (the "2020 wildfires"). PacifiCorp has recorded estimated liabilities, net of expected insurance recoveries, of $136 million as of December 31, 2020, which represents its best estimate of probable losses, net of expected insurance recoveries, as a result of the 2020 wildfires.

We identified wildfire-related contingencies and the related disclosure as a critical audit matter because of the significant judgments made by management to estimate the losses. This required the application of a high degree of judgment and extensive effort when performing audit procedures to evaluate the reasonableness of management's estimate of the losses and disclosure related to wildfire-related loss contingencies.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's judgments regarding its estimate of losses for wildfire-related contingencies and the related disclosure included the following, among others:
We evaluated management's judgments related to whether a loss was probable and reasonably estimable, reasonably possible, or remote for each individual wildfire by inquiring of management and PacifiCorp's external and internal legal counsel regarding the amounts of probable and reasonably estimable, reasonably possible, and remote losses, including the potential impact of information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire, and external information for any evidence that might contradict management's assertions.
We evaluated the estimation methodology for determining the amount of probable loss through inquiries with management and its external and internal legal counsel.
217


We tested the significant assumptions used in determining the estimate, including, but not limited to, information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire.
We read legal letters from PacifiCorp's external and internal legal counsel regarding information regarding ongoing litigation related to the 2020 wildfires and evaluated whether the information therein was consistent with the information obtained in our procedures.
We evaluated whether PacifiCorp's disclosures were appropriate and consistent with the information obtained in our procedures.

/s/ Deloitte & Touche LLP


Portland, Oregon
February 23, 201826, 2021


We have served as PacifiCorp's auditor since 2006.



218


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)

As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$13 $30 
Trade receivables, net703 644 
Other receivables, net48 70 
Inventories482 394 
Regulatory assets116 63 
Prepaid expenses79 61 
Other current assets82 28 
Total current assets1,523 1,290 
Property, plant and equipment, net22,430 20,973 
Regulatory assets1,279 1,060 
Other assets470 374 
Total assets$25,702 $23,697 
 As of December 31,
 2017 2016
    
ASSETS
    
Current assets:   
Cash and cash equivalents$14
 $17
Accounts receivable, net684
 728
Income taxes receivable59
 17
Inventories433
 443
Regulatory assets31
 53
Prepaid Expenses73
 64
Other current assets21
 32
Total current assets1,315
 1,354
    
Property, plant and equipment, net19,203
 19,162
Regulatory assets1,030
 1,490
Other assets372
 388
    
Total assets$21,920
 $22,394


The accompanying notes are an integral part of these consolidated financial statements.





219



PACIFICORP AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)

As of December 31,
20202019
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
Accounts payable$772 $679 
Accrued interest127 116 
Accrued property, income and other taxes80 96 
Accrued employee expenses84 75 
Short-term debt93 130 
Current portion of long-term debt420 38 
Regulatory liabilities115 56 
Other current liabilities174 170 
Total current liabilities1,865 1,360 
Long-term debt8,192 7,620 
Regulatory liabilities2,727 2,913 
Deferred income taxes2,627 2,563 
Other long-term liabilities1,118 804 
Total liabilities16,529 15,260 
Commitments and contingencies (Note 14)00
Shareholders' equity:
Preferred stock
Common stock - 750 shares authorized, 0 par value, 357 shares issued and outstanding
Additional paid-in capital4,479 4,479 
Retained earnings4,711 3,972 
Accumulated other comprehensive loss, net(19)(16)
Total shareholders' equity9,173 8,437 
Total liabilities and shareholders' equity$25,702 $23,697 
 As of December 31,
 2017 2016
    
LIABILITIES AND SHAREHOLDERS' EQUITY
    
Current liabilities:   
Accounts payable$453
 $408
Accrued employee expenses70
 67
Accrued interest115
 115
Accrued property and other taxes66
 63
Short-term debt80
 270
Current portion of long-term debt and capital lease obligations588
 58
Regulatory liabilities75
 54
Other current liabilities170
 164
Total current liabilities1,617
 1,199
    
Long-term debt and capital lease obligations6,437
 7,021
Regulatory liabilities2,996
 978
Deferred income taxes2,582
 4,880
Other long-term liabilities733
 926
Total liabilities14,365
 15,004
    
Commitments and contingencies (Note 13)
 
    
Shareholders' equity:   
Preferred stock2
 2
Common stock - 750 shares authorized, no par value, 357 shares issued and outstanding
 
Additional paid-in capital4,479
 4,479
Retained earnings3,089
 2,921
Accumulated other comprehensive loss, net(15) (12)
Total shareholders' equity7,555
 7,390
    
Total liabilities and shareholders' equity$21,920
 $22,394


The accompanying notes are an integral part of these consolidated financial statements.



220


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating revenue$5,341 $5,068 $5,026 
Operating expenses:
Cost of fuel and energy1,790 1,795 1,757 
Operations and maintenance1,209 1,048 1,038 
Depreciation and amortization1,209 954 979 
Property and other taxes209 199 201 
Total operating expenses4,417 3,996 3,975 
Operating income924 1,072 1,051 
Other income (expense):
Interest expense(426)(401)(384)
Allowance for borrowed funds48 36 18 
Allowance for equity funds98 72 35 
Interest and dividend income10 21 15 
Other, net10 32 
Total other expense(260)(240)(308)
Income before income tax expense664 832 743 
Income tax (benefit) expense(75)61 
Net income$739 $771 $738 
 Years Ended December 31,
 2017 2016 2015
      
Operating revenue$5,237
 $5,201
 $5,232
      
Operating costs and expenses:     
Energy costs1,770
 1,751
 1,868
Operations and maintenance1,012
 1,064
 1,082
Depreciation and amortization796
 770
 757
Taxes, other than income taxes197
 190
 185
Total operating costs and expenses3,775
 3,775
 3,892
      
Operating income1,462
 1,426
 1,340
      
Other income (expense):     
Interest expense(381) (380) (379)
Allowance for borrowed funds11
 15
 18
Allowance for equity funds20
 27
 33
Other, net16
 15
 11
Total other income (expense)(334) (323) (317)
      
Income before income tax expense1,128
 1,103
 1,023
Income tax expense360
 340
 328
Net income$768
 $763
 $695


The accompanying notes are an integral part of these consolidated financial statements.



221


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

Years Ended December 31,
202020192018
Net income$739 $771 $738 
Other comprehensive (loss) income, net of tax —
Unrecognized amounts on retirement benefits, net of tax of $(1), $(1) and $1(3)(3)
Comprehensive income$736 $768 $740 
 Years Ended December 31,
 2017 2016 2015
      
Net income$768
 $763
 $695
      
Other comprehensive (loss) income, net of tax —     
Unrecognized amounts on retirement benefits, net of tax of $3, $- and $1(3) (1) 2
      
Comprehensive income$765
 $762
 $697


The accompanying notes are an integral part of these consolidated financial statements.



222


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
(Amounts in millions)

Accumulated
AdditionalOtherTotal
PreferredCommonPaid-inRetainedComprehensiveShareholders'
StockStockCapitalEarningsLoss, NetEquity
Balance, December 31, 2017$$$4,479 $3,089 $(15)$7,555 
Net income— — 738 738 
Other comprehensive income— — 
Common stock dividends declared— — (450)(450)
Balance, December 31, 20184,479 3,377 (13)7,845 
Net income— — 771 771 
Other comprehensive loss— — (1)(3)(4)
Common stock dividends declared— — (175)(175)
Balance, December 31, 20194,479 3,972 (16)8,437 
Net income— — 739 739 
Other comprehensive loss— — (3)(3)
Balance, December 31, 2020$$$4,479 $4,711 $(19)$9,173 
         Accumulated  
     Additional   Other Total
 Preferred Common Paid-in Retained Comprehensive Shareholders'
 Stock Stock Capital Earnings Loss, Net Equity
Balance, December 31, 2014$2
 $
 $4,479
 $3,288
 $(13) $7,756
Net income
 
 
 695
 
 695
Other comprehensive income
 
 
 
 2
 2
Common stock dividends declared
 
 
 (950) 
 (950)
Balance, December 31, 20152
 
 4,479
 3,033
 (11) 7,503
Net income
 
 
 763
 
 763
Other comprehensive loss
 
 
 
 (1) (1)
Common stock dividends declared
 
 
 (875) 
 (875)
Balance, December 31, 20162
 
 4,479
 2,921
 (12) 7,390
Net income
 
 
 768
 
 768
Other comprehensive loss
 
 
 
 (3) (3)
Common stock dividends declared
 
 
 (600) 
 (600)
Balance, December 31, 2017$2
 $
 $4,479
 $3,089
 $(15) $7,555


The accompanying notes are an integral part of these consolidated financial statements.



223


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)

Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$739 $771 $738 
Adjustments to reconcile net income to net cash flows from operating
activities:
Depreciation and amortization1,209 954 979 
Allowance for equity funds(98)(72)(35)
Changes in regulatory assets and liabilities(229)(55)87 
Deferred income taxes and amortization of investment tax credits(124)(131)(199)
Other, net20 
Changes in other operating assets and liabilities:
Trade receivables, other receivables and other assets(154)26 31 
Inventories(88)23 16 
Prepaid expenses(15)(12)31 
Derivative collateral, net23 12 15 
Accrued property, income and other taxes, net(53)22 60 
Accounts payable and other liabilities372 (11)83 
Net cash flows from operating activities1,583 1,547 1,811 
Cash flows from investing activities:
Capital expenditures(2,540)(2,175)(1,257)
Other, net30 11 
Net cash flows from investing activities(2,510)(2,164)(1,252)
Cash flows from financing activities:
Proceeds from long-term debt987 989 593 
Repayments of long-term debt(38)(350)(586)
(Repayments of) net proceeds from short-term debt(37)100 (50)
Dividends paid(175)(450)
Other, net(2)(3)(3)
Net cash flows from financing activities910 561 (496)
Net change in cash and cash equivalents and restricted cash and cash equivalents(17)(56)63 
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period36 92 29 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$19 $36 $92 
 Years Ended December 31,
 2017 2016 2015
Cash flows from operating activities:     
Net income$768
 $763
 $695
Adjustments to reconcile net income to net cash flows from operating     
activities:
 
 
Depreciation and amortization796
 770
 757
Allowance for equity funds(20) (27) (33)
Deferred income taxes and amortization of investment tax credits70
 139
 172
Changes in regulatory assets and liabilities18
 122
 63
Other, net9
 4
 6
Changes in other operating assets and liabilities:     
Accounts receivable and other assets48
 (20) 6
Derivative collateral, net(6) 6
 (47)
Inventories10
 (21) (7)
Prepaid expenses(8) (5) (1)
Income taxes(49) 
 116
Accounts payable and other liabilities(61) (163) 7
Net cash flows from operating activities1,575
 1,568
 1,734
      
Cash flows from investing activities:     
Capital expenditures(769) (903) (916)
Other, net40
 34
 (2)
Net cash flows from investing activities(729) (869) (918)
      
Cash flows from financing activities:     
Proceeds from long-term debt
 
 248
Repayments of long-term debt and capital lease obligations(58) (68) (124)
Net (repayments) proceeds from short-term debt(190) 250
 
Common stock dividends(600) (875) (950)
Other, net(1) (1) (1)
Net cash flows from financing activities(849) (694) (827)
      
Net change in cash and cash equivalents(3) 5
 (11)
Cash and cash equivalents at beginning of period17
 12
 23
Cash and cash equivalents at end of period$14
 $17
 $12


The accompanying notes are an integral part of these consolidated financial statements.



224


PACIFICORP AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(1)Organization and Operations


PacifiCorp, which includes PacifiCorp and its subsidiaries, is a United States regulated electric utility company serving retail customers, including residential, commercial, industrial, irrigation and other customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp owns, or has interests in, a number of thermal, hydroelectric, wind-powered and geothermal generating facilities, as well as electric transmission and distribution assets. PacifiCorp also buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants. PacifiCorp is subject to comprehensive state and federal regulation. PacifiCorp's subsidiaries support its electric utility operations by providing coal mining services. PacifiCorp is an indirect subsidiary of Berkshire Hathaway Energy Company ("BHE"), a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").


(2)Summary of Significant Accounting Policies


Basis of Consolidation and Presentation


The Consolidated Financial Statements include the accounts of PacifiCorp and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated.


Use of Estimates in Preparation of Financial Statements


The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies.loss contingencies, including those related to the Oregon and Northern California 2020 wildfires (the "2020 Wildfires") described in Note 14. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.


Accounting for the Effects of Certain Types of Regulation


PacifiCorp prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, PacifiCorp defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in rates occur.


PacifiCorp continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit PacifiCorp's ability to recover its costs. PacifiCorp believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future rates, the related regulatory assets and liabilities will be written offrecognized in net income, returned to net incomecustomers or re-established as accumulated other comprehensive income (loss) ("AOCI").


225


Fair Value Measurements


As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.


Cash Equivalents and Restricted Cash and Cash Equivalents and Investments


Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds representing escrow accounts for disputes, vendor retention, custodial and nuclear decommissioning funds. Restricted amounts are included in other current assets and other assets on the Consolidated Balance Sheets.


Investments


Available-for-sale securities are carried at fair value with realized gains and losses, as determined on a specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of tax. As of December 31, 20172020 and 2016,2019, PacifiCorp had no0 unrealized gains and losses on available-for-sale securities. Trading securities are carried at fair value with realized and unrealized gains and losses recognized in earnings.


    Equity Method Investments

PacifiCorp utilizes the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when an investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, PacifiCorp records the investment at cost and subsequently increases or decreases the carrying value of the investment by PacifiCorp's proportionate share of the net earnings or losses and other comprehensive income (loss) ("OCI") of the investee. PacifiCorp records dividends or other equity distributions as reductions in the carrying value of the investment.


Allowance for Doubtful AccountsCredit Losses


Accounts receivableTrade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination, and are stated at the outstanding principal amount, net of an estimated allowance for doubtful accounts.credit losses. The allowance for doubtful accountscredit losses is based on PacifiCorp's assessment of the collectibilitycollectability of amounts owed to PacifiCorp by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, PacifiCorp primarily utilizes credit loss history. However, PacifiCorp may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. The change in the balance of the allowance for doubtful accounts,credit losses, which is included in accounts receivable,trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31 (in millions):

202020192018
Beginning balance$$$10 
Charged to operating costs and expenses, net18 13 12 
Write-offs, net(9)(13)(14)
Ending balance$17 $$


226

 2017 2016 2015
      
Beginning balance$7
 $7
 $7
Charged to operating costs and expenses, net15
 12
 10
Write-offs, net(12) (12) (10)
Ending balance$10
 $7
 $7


Derivatives


PacifiCorp employs a number of different derivative contracts, which may include forwards, options, swaps and other agreements, to manage price risk for electricity, natural gas and other commodities and interest rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements.


Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or energy costs on the Consolidated Statements of Operations.


For PacifiCorp's derivative contracts, the settled amount is generally included in rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in rates are recorded as regulatory liabilities or assets. For a derivative contract not probable of inclusion in rates, changes in the fair value are recognized in earnings.



Inventories


Inventories consist mainly of materials, and supplies totaling $235 million and $228 million as of December 31, 2017, and 2016, respectively, and fuel stocks totaling $198 million and $215 million as of December 31, 2017, and 2016, respectively. Inventories are stated at the lower of average cost or net realizable value.


Property, Plant and Equipment, Net


General


Additions to property, plant and equipment are recorded at cost. PacifiCorp capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs, which include debt and equity allowance for funds used during construction ("AFUDC"). The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed.


Depreciation and amortization are generally computed on the straight-line method based on composite asset class lives prescribed by PacifiCorp's various regulatory authorities or over the assets' estimated useful lives. Depreciation studies are completed periodically to determine the appropriate composite asset class lives, net salvage and depreciation rates. These studies are reviewed and rates are ultimately approved by the various regulatory authorities. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.


Generally when PacifiCorp retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.


Debt and equity AFUDC, which representrepresents the estimated costs of debt and equity funds necessary to finance the construction of property, plant and equipment, is capitalized as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC"). After construction is completed, PacifiCorp is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.


227


Asset Retirement Obligations


PacifiCorp recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. PacifiCorp's AROs are primarily associated with its generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.


Impairment


The CompanyPacifiCorp evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. TheAs substantially all property, plant and equipment supports PacifiCorp's regulated businesses the impacts of regulation are considered when evaluating the carrying value of regulated assets.



Leases

PacifiCorp has non-cancelable operating leases primarily for land, office space, office equipment, and generating facilities and finance leases consisting primarily of office buildings, natural gas pipeline facilities, and generating facilities. These leases generally require PacifiCorp to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. PacifiCorp does not include options in its lease calculations unless there is a triggering event indicating PacifiCorp is reasonably certain to exercise the option. PacifiCorp's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Right-of-use assets will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

PacifiCorp's leases of generating facilities generally are in the form of long-term purchases of electricity, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

PacifiCorp's operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Revenue Recognition


Revenue is recognized as electricity is deliveredPacifiCorp uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services are provided. Revenue recognized includes billed and unbilled amounts. As of December 31, 2017 and 2016, unbilled revenue was $255 million and $275 million, respectively, and is included in accounts receivable, net onan amount that reflects the Consolidated Balance Sheets. Rates charged are established by regulatorsconsideration to which PacifiCorp expects to be entitled in exchange for those goods or contractual arrangements.

The determination of sales to individual customers is based on the reading of the customer's meter, which is performed on a systematic basis throughout the month. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. The estimate is reversed in the following month and actual revenue is recorded based on subsequent meter readings.

The monthly unbilled revenues of PacifiCorp are determined by the estimation of unbilled energy provided during the period, the assignment of unbilled energy provided to customer classes and the average rate per customer class. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes.

services. PacifiCorp records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.


Substantially all of PacifiCorp's Customer Revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission and distribution and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. Other revenue consists primarily of revenue recognized in accordance with ASC 815, "Derivatives and Hedging."
228


Revenue recognized is equal to what PacifiCorp has the right to invoice as it corresponds directly with the value to the customer of PacifiCorp's performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $254 million and $245 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

Unamortized Debt Premiums, Discounts and Debt Issuance Costs

Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.

Income Taxes


Berkshire Hathaway includes PacifiCorp in its consolidated United States federal income tax return. Consistent with established regulatory practice, PacifiCorp's provision for income taxes has been computed on a stand-alone basis.


Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using estimatedenacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of OCI are charged or credited directly to OCI. On December 22, 2017, the Tax Cuts and Jobs Act ("2017 Tax Reform") was signed into law which, among other items, reduces the federal corporate tax rate from 35% to 21%. Changes in deferred income tax assets and liabilities that are associated with income tax benefits and expense for the federal tax rate change from 35% to 21%, certain property-related basis differences and other various differences that PacifiCorp deems probable to be passed on to its customers in most state jurisdictions are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse.reverse or as otherwise approved by PacifiCorp's various regulatory commissions. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized.


Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory jurisdictions.commissions. Investment tax credits are included in other long-term liabilities on the Consolidated Balance Sheets and were $16$12 million and $18$11 million as of December 31, 20172020 and 2016,2019, respectively.


In determining PacifiCorp's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by PacifiCorp's various regulatory jurisdictions.commissions. PacifiCorp's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. PacifiCorp recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of PacifiCorp's federal, state and local income tax examinations is uncertain, PacifiCorp believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on PacifiCorp's consolidated financial results. PacifiCorp's unrecognized tax benefits are primarily included in other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.


Segment Information


PacifiCorp currently has one segment, which includes its regulated electric utility operations.


New Accounting Pronouncements


In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. PacifiCorp adopted this guidance on January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.
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In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, "Statement of Cash Flows - Overall." The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. PacifiCorp adopted this guidance on January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. PacifiCorp adopted this guidance January 1, 2018 and the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. PacifiCorp plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In January 2016, the FASB issued ASU No. 2016-01, which amends FASB ASC Subtopic 825-10, "Financial Instruments - Overall." The amendments in this guidance address certain aspects of recognition, measurement, presentation and disclosure of financial instruments including a requirement that all investments in equity securities that do not qualify for equity method accounting or result in consolidation of the investee be measured at fair value with changes in fair value recognized in net income. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted, and is required to be adopted prospectively by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. PacifiCorp adopted this guidance on January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016 and 2017, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. PacifiCorp adopted this guidance on January 1, 2018 under the modified retrospective method and the adoption will not have an impact on its Consolidated Financial Statements but will increase the disclosures included within Notes to Consolidated Financial Statements. The timing and amount of revenue recognized after adoption of the new guidance will not be different than before as a majority of revenue is recognized when PacifiCorp has the right to invoice as it corresponds directly with the value to the customer of PacifiCorp's performance to date. PacifiCorp plans to quantitatively disaggregate revenue in the required financial statement footnote by customer class.

(3)Property, Plant and Equipment, Net


Property, plant and equipment, net consists of the following as of December 31 (in millions):

Depreciable Life20202019
Utility Plant:
Generation14 - 67 years$12,861 $12,509 
Transmission58 - 75 years7,632 6,482 
Distribution20 - 70 years7,660 7,307 
Intangible plant(1)
5 - 75 years1,054 1,016 
Other5 - 60 years1,510 1,449 
Utility plant in service30,717 28,763 
Accumulated depreciation and amortization(9,838)(9,803)
Utility plant in service, net20,879 18,960 
Other non-regulated, net of accumulated depreciation and amortization14 - 95 years10 
Plant, net20,888 18,970 
Construction work-in-progress1,542 2,003 
Property, plant and equipment, net$22,430 $20,973 

 Depreciable Life 2017 2016
Utility Plant:     
Generation14 - 67 years $12,490
 $12,371
Transmission58 - 75 years 6,226
 6,055
Distribution20 - 70 years 6,792
 6,590
Intangible plant(1)
5 - 62 years 937
 884
Other5 - 60 years 1,435
 1,384
Utility plant in service  27,880
 27,284
Accumulated depreciation and amortization  (9,366) (8,790)
Utility plant in service, net  18,514
 18,494
Other non-regulated, net of accumulated depreciation and amortization45 years 11
 11
Plant, net  18,525
 18,505
Construction work-in-progress  678
 657
Property, plant and equipment, net  $19,203
 $19,162
(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.


The average depreciation and amortization rate applied to depreciable property, plant and equipment was 2.9%4.1%, 3.3% and 3.5% for the years ended December 31, 2020, 2019 and 2018, respectively, including the impacts of accelerated depreciation totaling $376 million, $125 million and $174 million in 2020, 2019 and 2018, respectively, for Utah's share of certain thermal plant units in 2020 and 2018, including Cholla Unit No. 4 in 2020 for which operations ceased in December 2020; Oregon's and Idaho's shares of Cholla Unit No. 4 in 2020; and Oregon's share of certain retired wind equipment associated with wind repowering projects in 2020 and 2019. As discussed in Notes 6 and 9, existing regulatory liabilities primarily associated with the Utah Sustainability and Transportation Plan ("STEP") and 2017 2016Tax Reform benefits were utilized to accelerate depreciation of these assets.

PacifiCorp filed a depreciation study in 2018 with each of its state public utility commissions except the California Public Utilities Commission. In 2020, PacifiCorp reached settlement stipulations with parties to the depreciation study in each state in which the study was filed and 2015,received commission orders to implement revised depreciation rates effective January 1, 2021. In December 2020, PacifiCorp filed applicable revised depreciation rates with the FERC under PacifiCorp's open access transmission tariff, which were accepted by the FERC effective January 1, 2021. The revised depreciation rates will result in an estimated increase in depreciation expense of $176 million in 2021 on a total company basis based on historical property, plant and equipment balances and including depreciation of certain coal-fueled generating units in Oregon and Washington over accelerated periods. These accelerated depreciable lives for the coal-fueled units are mainly due to state legislation requiring these costs to be excluded from customers' rates before 2026 and 2030 for Washington and Oregon, respectively.


Unallocated Acquisition Adjustments


PacifiCorp has unallocated acquisition adjustments that represent the excess of costs of the acquired interests in property, plant and equipment purchased from the entity that first devoteddedicated the assets to utility service over their net book value in those assets. These unallocated acquisition adjustments included in other property, plant and equipment had an original cost of $156 million as of December 31, 20172020 and 2016, respectively,2019, and accumulated depreciation of $122$140 million and $117$132 million as of December 31, 20172020 and 2016,2019, respectively.




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(4)Jointly Owned Utility Facilities


Under joint facility ownership agreements with other utilities, PacifiCorp, as a tenant in common, has undivided interests in jointly owned generation, transmission and distribution facilities. PacifiCorp accounts for its proportionate share of each facility, and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include PacifiCorp's share of the expenses of these facilities.


The amounts shown in the table below represent PacifiCorp's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 20172020 (dollars in millions):
FacilityAccumulatedConstruction
PacifiCorpinDepreciation andWork-in-
ShareServiceAmortizationProgress
Jim Bridger Nos. 1 - 467 %$1,485 $714 $15 
Hunter No. 194 486 203 
Hunter No. 260 305 127 
Wyodak80 476 254 
Colstrip Nos. 3 and 410 255 145 
Hermiston50 184 93 
Craig Nos. 1 and 219 368 305 
Hayden No. 125 75 42 
Hayden No. 213 44 25 
Transmission and distribution facilitiesVarious857 263 100 
Total$4,535 $2,171 $126 

(5)    Leases

The following table summarizes PacifiCorp's leases recorded on the Consolidated Balance Sheets as of December 31 (in millions):
20202019
Right-of-use assets:
Operating leases$11 $12 
Finance leases17 19 
Total right-of-use assets$28 $31 
Lease liabilities:
Operating leases$11 $12 
Finance leases17 19 
Total lease liabilities$28 $31 

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   Facility Accumulated Construction
 PacifiCorp in Depreciation and Work-in-
 Share Service Amortization Progress
        
Jim Bridger Nos. 1 - 467% $1,442
 $616
 $12
Hunter No. 194
 474
 172
 7
Hunter No. 260
 297
 106
 1
Wyodak80
 469
 216
 1
Colstrip Nos. 3 and 410
 247
 131
 4
Hermiston50
 180
 81
 1
Craig Nos. 1 and 219
 365
 231
 3
Hayden No. 125
 74
 34
 
Hayden No. 213
 43
 21
 
Foote Creek79
 40
 26
 
Transmission and distribution facilitiesVarious 794
 238
 67
Total  $4,425
 $1,872
 $96
The following table summarizes PacifiCorp's lease costs for the years ended December 31 (in millions):


20202019
Variable$60 $77 
Operating
Finance:
Amortization
Interest
Short-term
Total lease costs$68 $85 
Weighted-average remaining lease term (years):
Operating leases13.914.0
Finance leases8.49.1
Weighted-average discount rate:
Operating leases3.8 %3.7 %
Finance leases10.5 %10.6 %
(5)
Cash payments associated with operating and finance lease liabilities approximated lease cost for the years ended December 31, 2020 and 2019.

PacifiCorp has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$$$10 
2022
2023
2024
2025
Thereafter12 18 
Total undiscounted lease payments15 28 43 
Less - amounts representing interest(4)(11)(15)
Lease liabilities$11 $17 $28 

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(6)Regulatory Matters


Regulatory Assets


Regulatory assets represent costs that are expected to be recovered in future rates. PacifiCorp's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining
Life20202019
Employee benefit plans(1)
20 years$432 $422 
Utah mine disposition(2)
Various117 125 
Unamortized contract values3 years42 60 
Deferred net power costs1 year78 106 
Unrealized loss on derivative contracts2 years17 62 
Asset retirement obligation24 years252 140 
Demand side management (DSM)(3)
10 years196 
OtherVarious261 200 
Total regulatory assets$1,395 $1,123 
Reflected as:
Current assets$116 $63 
Noncurrent assets1,279 1,060 
Total regulatory assets$1,395 $1,123 
 Weighted    
 Average    
 Remaining    
 Life 2017 2016
      
Deferred income taxes(1)
N/A $
 $421
Employee benefit plans(2)
20 years 418
 525
Utah mine disposition(3)
Various 156
 166
Unamortized contract values6 years 89
 98
Deferred net power costs1 year 21
 33
Unrealized loss on derivative contracts4 years 101
 73
Asset retirement obligation22 years 100
 82
OtherVarious 176
 145
Total regulatory assets  $1,061
 $1,543
      
Reflected as:     
Current assets  $31
 $53
Noncurrent assets  1,030
 1,490
Total regulatory assets  $1,061
 $1,543


(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in rates when recognized.
(1)Amount primarily represents income tax benefits and expense related to certain property-related basis differences and other various items that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.


(2)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in rates when recognized.

(2)Amounts represent regulatory assets established as a result of the Utah mine disposition in 2015 for the United Mine Workers of America ("UMWA") 1974 Pension Plan withdrawal and closure costs incurred to date considered probable of recovery.
(3)Amounts represent regulatory assets established as a result of the Utah mine disposition in 2015 for the net property, plant and equipment not considered probable of disallowance and for the portion of losses associated with the assets held for sale, UMWA 1974 Pension Plan withdrawal and closure costs incurred to date considered probable of recovery.


(3)At December 31, 2019, DSM regulatory assets were substantially offset by amounts billed to Utah retail customers under the related Utah STEP program. In accordance with the Utah general rate case order issued in December 2020, $185 million of amounts billed to Utah customers under the Utah STEP program were used to accelerate depreciation of certain coal-fueled generation units as discussed in Note 3.

PacifiCorp had regulatory assets not earning a return on investment of $589$707 million and $1.019 billion$609 million as of December 31, 20172020 and 2016,2019, respectively.



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Regulatory Liabilities


Regulatory liabilities represent income to be recognized or amounts to be returned to customers in future periods. PacifiCorp's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining
Life20202019
Cost of removal(1)
26 years$1,125 $1,019 
Deferred income taxes(2)
Various1,463 1,653 
OtherVarious254 297 
Total regulatory liabilities$2,842 $2,969 
Reflected as:
Current liabilities$115 $56 
Noncurrent liabilities2,727 2,913 
Total regulatory liabilities$2,842 $2,969 
 Weighted    
 Average    
 Remaining    
 Life 2017 2016
      
Cost of removal(1)
26 years $955
 $917
Deferred income taxes(2)
Various 1,960
 9
OtherVarious 156
 106
Total regulatory liabilities  $3,071
 $1,032
      
Reflected as:     
Current liabilities  $75
 $54
Noncurrent liabilities  2,996
 978
Total regulatory liabilities  $3,071
 $1,032


(1)Amounts represent estimated costs, as accrued through depreciation rates, of removing property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.
(1)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.


(2)
(2)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse. See Note 8 for further discussion of 2017 Tax Reform.

Utah Mine Disposition

In December 2014, PacifiCorp filed an advice letter with the California Public Utility Commission ("CPUC") to request approval to sell certain Utah mining assets and to establish memorandum accounts to track the costs associated with the Utah Mine Disposition for future recovery. In July 2015, the CPUC Energy Division issued a letter requiring PacifiCorp to file a formal application for approval of the sale of certain Utah mining assets. Accordingly, in September 2015, PacifiCorp filed an application with the CPUC. On February 6, 2017, a joint motion was filed with the CPUC seeking approval of a settlement agreement reached by PacifiCorp and all other parties. The agreement states, among other things, that the decision to sell certain Utah mining assets is in the public interest. Parties also reserve their rights to additional testimony, briefs, and hearings to the extentfederal tax rate change from 35% to 21% that are probable of being passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the CPUC determines that additional California Environmental Quality Act proceedings are necessary. A CPUC decision on the joint motion and settlement agreement is expected in 2018.temporary differences reverse.



(6)
(7)Short-term Debt and Other Financing AgreementsCredit Facilities


The following table summarizes PacifiCorp's availability under its credit facilities as of December 31 (in millions):

2020:
Credit facilities$1,200 
Less:
Short-term debt(93)
Tax-exempt bond support(218)
Net credit facilities$889 
2019:
Credit facilities$1,200 
Less:
Short-term debt(130)
Tax-exempt bond support(256)
Net credit facilities$814 

2017:  
Credit facilities $1,000
Less:  
Short-term debt (80)
Tax-exempt bond support (130)
Net credit facilities $790
   
2016:  
Credit facilities $1,000
Less:  
Short-term debt (270)
Tax-exempt bond support (142)
Net credit facilities $588
As of December 31, 2020, PacifiCorp was in compliance with the covenants of its credit facilities and letter of credit arrangements.


PacifiCorp has a $600 million unsecured credit facility expiring in June 2020 with two one-year extension options subject to lender consent2022 and a $400$600 million unsecured credit facility expiring in June 20202022 with aone remaining one-year extension option subject to lender consent. These credit facilities, which support PacifiCorp's commercial paper program, certain series of its tax-exempt bond obligations and provide for the issuance of letters of credit, have variable interest rates based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities.


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As of December 31, 20172020 and 2016,2019, the weighted average interest rate on commercial paper borrowings outstanding was 1.83%0.16% and 0.96%2.05%, respectively. These credit facilities require that PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.


As of December 31, 20172020 and 2016,2019, PacifiCorp had $230$11 million and $269$13 million, respectively, of fully available letters of credit issued under committed arrangements. As of December 31, 20172020 and 2016, $2162019, $11 million and $255$13 million, respectively, of these letters of credit, support PacifiCorp's variable-rate tax-exempt bond obligations and expire through March 2019 and $14 million support certain transactions required by third parties and generally have provisions that automatically extend the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior to the expiration date.



(7)
(8)Long-term Debt and Capital Lease Obligations


PacifiCorp's long-term debt and capital lease obligations werewas as follows as of December 31 (dollars in millions):

20202019
AverageAverage
PrincipalCarryingInterestCarryingInterest
AmountValueRateValueRate
First mortgage bonds:
2.95% to 8.53%, due through 2025$2,149 $2,145 4.00 %$2,144 4.00 %
2.70% to 6.71%, due 2026 to 2030900 895 3.50 497 4.14 
5.25% to 7.70%, due 2031 to 2035800 796 6.33 795 6.33 
5.75% to 6.35%, due 2036 to 20392,500 2,485 6.06 2,484 6.06 
4.10% due 2042300 297 4.10 297 4.10 
3.30% to 4.15%, due 2049 to 20511,800 1,776 3.86 1,186 4.14 
Variable-rate series, tax-exempt bond obligations (2020-0.14% to 0.16%; 2019-1.60% to 1.80%):
Due 2020038 1.78 
Due 202525 25 0.14 24 1.75 
Due 2024 to 2025(1)
193 193 0.15 193 1.70 
Total long-term debt$8,667 $8,612 $7,658 

 2017 2016
     Average   Average
 Principal Carrying Interest Carrying Interest
 Amount Value Rate Value Rate
          
First mortgage bonds:         
2.95% to 8.53%, due 2018 to 2022$1,875
 $1,872
 4.80% $1,872
 4.80%
2.95% to 8.23%, due 2023 to 20261,224
 1,218
 4.10
 1,217
 4.10
7.70% due 2031300
 298
 7.70
 298
 7.70
5.25% to 6.25%, due 2034 to 20372,050
 2,040
 5.90
 2,039
 5.90
4.10% to 6.35%, due 2038 to 20421,250
 1,236
 5.60
 1,235
 5.60
Variable-rate series, tax-exempt bond obligations (2017-1.60% to 1.87%; 2016-0.69% to 0.86%):         
Due 2018 to 202079
 79
 1.77
 91
 0.85
Due 2018 to 2025(1)
70
 70
 1.81
 108
 0.74
Due 2024(1)(2)
143
 142
 1.73
 142
 0.70
Due 2024 to 2025(2)
50
 50
 1.72
 50
 0.80
Total long-term debt7,041
 7,005
   7,052
  
Capital lease obligations:         
8.75% to 14.61%, due through 203520
 20
 11.46
 27
 11.09
Total long-term debt and capital lease         
obligations$7,061
 $7,025
   $7,079
  
Reflected as:
20202019
Current portion of long-term debt$420 $38 
Long-term debt8,192 7,620 
Total long-term debt$8,612 $7,658 

Reflected as:   
 2017 2016
    
Current portion of long-term debt and capital lease obligations$588
 $58
Long-term debt and capital lease obligations6,437
 7,021
Total long-term debt and capital lease obligations$7,025
 $7,079
(1)Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.

1)Supported by $216 million and $255 million of fully available letters of credit issued under committed bank arrangements as of December 31, 2017 and 2016, respectively.
2)Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.
PacifiCorp's long-term debt generally includes provisions that allow PacifiCorp to redeem the first mortgage bonds in whole or in part at any time through the payment of a make-whole premium. Variable-rate tax-exempt bond obligations are generally redeemable at par value.


PacifiCorp currently has regulatory authority from the OPUCOregon Public Utility Commission and the IPUCIdaho Public Utilities Commission to issue an additional $1.325$3.0 billion of long-term debt. PacifiCorp must make a notice filing with the Washington Utilities and Transportation Commission prior to any future issuance. PacifiCorp currently has an effective shelf registration statement filed with the United States Securities and Exchange Commission to issue up to $1.325 billion additionalan indeterminate amount of first mortgage bonds through January 2019.September 2023.


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The issuance of PacifiCorp's first mortgage bonds is limited by available property, earnings tests and other provisions of PacifiCorp's mortgage. Approximately $27$30 billion of PacifiCorp's eligible property (based on original cost) was subject to the lien of the mortgage as of December 31, 2017.2020.


PacifiCorp has entered into long-term agreements that qualify as capital leases and expire at various dates through March 2035 for transportation services, a power purchase agreement and real estate. The transportation services agreements included as capital leases are for the right to use pipeline facilities to provide natural gas to two of PacifiCorp's generating facilities. Net capital lease assets of $20 million and $27 million as of December 31, 2017 and 2016, respectively, were included in property, plant and equipment, net in the Consolidated Balance Sheets.


As of December 31, 2017,2020, the annual principal maturities of long-term debt and total capital lease obligations for 20182021 and thereafter are as follows (in millions):

Long-term
Debt
2021$420 
2022605 
2023449 
2024591 
2025302 
Thereafter6,300 
Total8,667 
Unamortized discount and debt issuance costs(55)
Total$8,612 

 Long-term Capital Lease  
 Debt Obligations Total
      
2018$586
 $4
 $590
2019350
 4
 354
202038
 3
 41
2021420
 6
 426
2022605
 2
 607
Thereafter5,042
 18
 5,060
Total7,041
 37
 7,078
Unamortized discount and debt issuance costs(36) 
 (36)
Amounts representing interest


 (17) (17)
Total$7,005
 $20
 $7,025

(8)(9)Income Taxes

Tax Cuts and Jobs Act

The 2017 Tax Reform impacts many areas of income tax law. The most material items include the reduction of the federal corporate tax rate from 35% to 21% effective January 1, 2018 and limitations on bonus depreciation for utility property. GAAP requires the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. As a result of the 2017 Tax Reform, PacifiCorp reduced deferred income tax liabilities $2,361 million. As it is probable the change in deferred taxes will be passed back to customers through regulatory mechanisms, PacifiCorp increased net regulatory liabilities by $2,358 million.

In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. PacifiCorp has recorded the impacts of the 2017 Tax Reform and believes all the impacts to be complete with the exception of interpretations of the bonus depreciation rules. PacifiCorp has determined the amounts recorded and the interpretations relating to this item to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. PacifiCorp believes its interpretations for bonus depreciation to be reasonable, however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.




Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
2020 20192018
Current:
Federal$19 $158 $164 
State30 34 40 
Total49 192 204 
Deferred:
Federal(124)(132)(187)
State(9)
Total(123)(128)(196)
Investment tax credits(1)(3)(3)
Total income tax (benefit) expense$(75)$61 $
 2017 2016 2015
      
Current:     
Federal$249
 $169
 $130
State41
 32
 26
Total290
 201
 156
      
Deferred:     
Federal59
 123
 148
State15
 21
 29
Total74
 144
 177
      
Investment tax credits(4) (5) (5)
Total income tax expense$360
 $340
 $328


A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
202020192018
Federal statutory income tax rate21 %21 %21 %
State income taxes, net of federal income tax benefit
Effects of ratemaking(22)(13)(17)
Federal income tax credits(13)(3)(7)
Other(1)
Effective income tax rate(11)%%%
 2017 2016 2015
      
Federal statutory income tax rate35 % 35 % 35 %
State income taxes, net of federal income tax benefit3
 3
 3
Federal income tax credits(5) (6) (6)
Other(1) (1) 
Effective income tax rate32 % 31 % 32 %


Income tax credits relate primarily to production tax credits ("PTC") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity production tax creditsPTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10ten years from the date the qualifying generating facilities are placed in-service.

236


Effects of ratemaking is primarily attributable to use of excess deferred income taxes of $118 million, $91 million and $127 million for 2020, 2019 and 2018, respectively, to accelerate depreciation of certain retired wind equipment and coal-fueled generating units and to amortize certain regulatory asset balances in accordance with regulatory orders issued in Utah, Oregon, and Idaho.

The net deferred income tax liability consists of the following as of December 31 (in millions):
2020 2019
Deferred income tax assets:
Regulatory liabilities$700 $731 
Employee benefits93 83 
Derivative contracts and unamortized contract values17 33 
State carryforwards73 70 
Loss contingencies63 
Asset retirement obligations65 61 
Other66 65 
1,077 1,046 
Deferred income tax liabilities:
Property, plant and equipment(3,311)(3,312)
Regulatory assets(343)(276)
Other(50)(21)
(3,704)(3,609)
Net deferred income tax liability$(2,627)$(2,563)
 2017 2016
    
Deferred income tax assets:   
Regulatory liabilities$756
 $393
Employee benefits84
 202
Derivative contracts and unamortized contract values48
 67
State carryforwards83
 69
Asset retirement obligations50
 78
Other50
 94
 1,071
 903
Deferred income tax liabilities:   
Property, plant and equipment(3,381) (5,161)
Regulatory assets(261) (586)
Other(11) (36)
 (3,653) (5,783)
Net deferred income tax liability$(2,582) $(4,880)




The following table provides PacifiCorp's net operating loss and tax credit carryforwards and expiration dates as of December 31, 20172020 (in millions):
State
Net operating loss carryforwards$1,138 
Deferred income taxes on net operating loss carryforwards$53 
Expiration dates2023 - 2032
Tax credit carryforwards$20 
Expiration dates2021 - indefinite
  State
   
Net operating loss carryforwards $1,356
Deferred income taxes on net operating loss carryforwards $63
Expiration dates 2018 - 2032
   
Tax credit carryforwards $20
Expiration dates 2018 - indefinite


The United States Internal Revenue Service has closed or effectively settled its examination of PacifiCorp's income tax returns through December 31, 2009.2013. The statute of limitations for PacifiCorp's state income tax returns have expired through December 31, 2009,2011, with the exception of California and Utah, for which the statute has expired through December 31, 2009. In addition, Idaho's statute of limitations havehas expired through MarchDecember 31, 2006.2016, except for the impact of any federal audit adjustments. The statute of limitations expiring for state filings may not preclude the state from adjusting the state net operating loss carryforward utilized in a year for which the examinationstatute of limitations is not closed.

As of December 31, 2017 and 2016, PacifiCorp had unrecognized tax benefits totaling $10 million and $12 million, respectively, related to tax positions for which ultimate deductibility is highly certain but for which there is uncertainty as to the timing of such deductibility. Recognition of these tax benefits, other than applicable interest and penalties, would not affect PacifiCorp's effective income tax rate.
237



(10)    Employee Benefit Plans
(9)
Employee Benefit Plans


PacifiCorp sponsors defined benefit pension and other postretirement benefit plans that cover the majoritycertain of its employees, as well as a defined contribution 401(k) employee savings plan ("401(k) Plan"). In addition, PacifiCorp contributes to a joint trustee pension plan and a subsidiary previously contributed to a multiemployer pension plan for benefits offered to certain bargaining units.


Pension and Other PostretirementDefined Benefit Plans


PacifiCorp's pension plans include non-contributory defined benefit pension plans, collectively the PacifiCorp Retirement Plan ("Retirement Plan"), and the Supplemental Executive Retirement Plan ("SERP"). The Retirement Plan is closed to all non-union employees hired after January 1, 2008. All non-union Retirement Plan participants hired prior to January 1, 2008 that did not elect to receive equivalent fixed contributions to the 401(k) Plan effective January 1, 2009 earned benefits based on a cash balance formula through December 31, 2016. Effective January 1, 2017, non-union employee participants with a cash balance benefit in the Retirement Plan are no longer eligible to receive pay credits in their cash balance formula. In general for union employees, benefits under the Retirement Plan were frozen at various dates from December 31, 2007 through December 31, 2011 as they are now being provided with enhanced 401(k) Plan benefits. However, certain limited union Retirement Plan participants continue to earn benefits under the Retirement Plan based on the employee's years of service and a final average pay formula. The SERP was closed to new participants as of March 21, 2006 and froze future accruals for active participants as of December 31, 2014.


During 2018, the Retirement Plan incurred a settlement charge of $22 million as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018.

PacifiCorp's other postretirement benefit plan provides healthcare and life insurance benefits to eligible retirees.



Net Periodic Benefit Cost


For purposes of calculating the expected return on plan assets, a market-related value is used. The market-related value of plan assets is calculated by spreading the difference between expected and actual investment returns over a five-year period beginning after the first year in which they occur.


Net periodic benefit cost for the plans included the following components for the years ended December 31 (in millions):

PensionOther Postretirement
202020192018202020192018
Service cost$$$$$$
Interest cost36 44 43 12 11 
Expected return on plan assets(56)(67)(72)(14)(21)(21)
Settlement22 
Net amortization18 11 13 (6)
Net periodic benefit (credit) cost$(2)$(12)$$$(7)$(14)


238

 Pension Other Postretirement
 2017 2016 2015 2017 2016 2015
            
Service cost$
 $4
 $4
 $2
 $2
 $3
Interest cost49
 54
 53
 14
 15
 16
Expected return on plan assets(72) (75) (77) (21) (21) (23)
Net amortization14
 34
 42
 (6) (5) (4)
Net periodic benefit cost (credit)$(9) $17
 $22
 $(11) $(9) $(8)



Funded Status


The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, beginning of year$1,036 $942 $334 $297 
Employer contributions(1)
Participant contributions
Actual return on plan assets124 181 15 55 
Benefits paid(101)(91)(26)(24)
Plan assets at fair value, end of year$1,064 $1,036 $327 $334 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Plan assets at fair value, beginning of year$999
 $1,043
 $302
 $305
Employer contributions54
 5
 1
 1
Participant contributions
 
 7
 6
Actual return on plan assets166
 51
 49
 17
Benefits paid(108) (100) (27) (27)
Plan assets at fair value, end of year$1,111
 $999
 $332
 $302

(1)Amounts represent employer contributions to the SERP.
The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Benefit obligation, beginning of year$1,167 $1,105 $304 $298 
Service cost
Interest cost36 44 12 
Participant contributions
Actuarial loss100 109 14 11 
Benefits paid(101)(91)(26)(24)
Benefit obligation, end of year$1,202 $1,167 $307 $304 
Accumulated benefit obligation, end of year$1,202 $1,167 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Benefit obligation, beginning of year$1,276
 $1,289
 $358
 $362
Service cost
 4
 2
 2
Interest cost49
 54
 14
 15
Participant contributions
 
 7
 6
Actuarial (gain) loss34
 29
 (23) 
Benefits paid(108) (100) (27) (27)
Benefit obligation, end of year$1,251
 $1,276
 $331
 $358
Accumulated benefit obligation, end of year$1,251
 $1,276
    



The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, end of year$1,064 $1,036 $327 $334 
Less - Benefit obligation, end of year1,202 1,167 307 304 
Funded status$(138)$(131)$20 $30 
Amounts recognized on the Consolidated Balance Sheets:
Other assets$$$20 $30 
Accrued employee expenses(4)(4)
Other long-term liabilities(142)(134)
Amounts recognized$(138)$(131)$20 $30 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Plan assets at fair value, end of year$1,111
 $999
 $332
 $302
Less - Benefit obligation, end of year1,251
 1,276
 331
 358
Funded status$(140) $(277) $1
 $(56)
        
Amounts recognized on the Consolidated Balance Sheets:       
Other assets$5
 $
 $1
 $
Other current liabilities(4) (5) 
 
Other long-term liabilities(141) (272) 
 (56)
Amounts recognized$(140) $(277) $1
 $(56)


The SERP has no plan assets; however, PacifiCorp has a Rabbi trust that holds corporate-owned life insurance and other investments to provide funding for the future cash requirements of the SERP. The cash surrender value of all of the policies included in the Rabbi trust, net of amounts borrowed against the cash surrender value, plus the fair market value of other Rabbi trust investments, was $60$61 million and $55$57 million as of December 31, 20172020 and 2016,2019, respectively. These assets are not included in the plan assets in the above table, but are reflected in cash and cash equivalents, totaling $9 million and $- millionnoncurrent other assets as of December 31, 20172020 and 2016, respectively, and noncurrent other assets, totaling $51 million and 55 million as of December 31, 2017 and 2016,2019, respectively, on the Consolidated Balance Sheets.


The projected benefit obligation and the accumulated benefit obligation for the pension plan were both in excess of the fair value of the plan assets as of December 31, 2020.
239


Unrecognized Amounts


The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
PensionOther Postretirement
2020201920202019
Net loss (gain)$455 $442 $(13)$(26)
Regulatory deferrals
Total$457 $443 $(10)$(20)
 Pension Other Postretirement
 2017 2016 2017 2016
        
Net loss (gain)$442
 $518
 $(12) $39
Prior service credit
 
 (6) (13)
Regulatory deferrals(4) (7) 7
 8
Total$438
 $511
 $(11) $34


A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 20172020 and 20162019 is as follows (in millions):
Accumulated
Other
RegulatoryComprehensive
AssetLossTotal
Pension
Balance, December 31, 2018$443 $17 $460 
Net (gain) loss arising during the year(11)(6)
Net amortization(10)(1)(11)
Total(21)(17)
Balance, December 31, 2019422 21 443 
Net loss arising during the year27 32 
Net amortization(17)(1)(18)
Total10 14 
Balance, December 31, 2020$432 $25 $457 
   Accumulated  
   Other  
 Regulatory Comprehensive  
 Asset Loss Total
Pension     
Balance, December 31, 2015$473
 $19
 $492
Net loss arising during the year51
 2
 53
Net amortization(33) (1) (34)
Total18
 1
 19
Balance, December 31, 2016491
 20
 511
Net (gain) loss arising during the year(60) 1
 (59)
Net amortization(13) (1) (14)
Total(73) 
 (73)
Balance, December 31, 2017$418
 $20
 $438
Regulatory
Asset (Liability)
Other Postretirement
Balance, December 31, 2018$
Net gain arising during the year(25)
Net amortization
Total(25)
Balance, December 31, 2019(20)
Net loss arising during the year13 
Net amortization(3)
Total10 
Balance, December 31, 2020$(10)


240
 Regulatory
 Asset (Liability)
Other Postretirement 
Balance, December 31, 2015$26
Net loss arising during the year3
Net amortization5
Total8
Balance, December 31, 201634
Net gain arising during the year(51)
Net amortization6
Total(45)
Balance, December 31, 2017$(11)

The net loss, prior service credit and regulatory deferrals that will be amortized in 2018 into net periodic benefit cost are estimated to be as follows (in millions):


  Net Prior Service Regulatory  
  Loss Credit Deferrals Total
         
Pension $16
 $
 $(2) $14
Other postretirement 
 (6) 1
 (5)
Total $16
 $(6) $(1) $9

Plan Assumptions


AssumptionsWeighted-average assumptions used to determine benefit obligations and net periodic benefit cost were as follows:
PensionOther Postretirement
202020192018202020192018
Benefit obligations as of December 31:
Discount rate2.50 %3.25 %4.25 %2.50 %3.20 %4.25 %
Rate of compensation increaseN/AN/AN/AN/AN/AN/A
Interest crediting rates for cash balance plan (1)(2)(3)
0.82 %2.27 %3.40 %N/AN/AN/A
Net periodic benefit cost for the years ended December 31:
Discount rate3.25 %4.25 %3.60 %3.20 %4.25 %3.60 %
Expected return on plan assets6.50 7.00 7.00 4.92 6.86 6.86 
 Pension Other Postretirement
 2017 2016 2015 2017 2016 2015
            
Benefit obligations as of December 31:           
Discount rate3.60% 4.05% 4.40%��3.60% 4.05% 4.35%
Rate of compensation increaseN/A
 N/A
 2.75
 N/A
 N/A
 N/A
            
Net periodic benefit cost for the years ended December 31:          
Discount rate4.05% 4.40% 4.00% 4.05% 4.35% 3.99%
Expected return on plan assets7.25
 7.50
 7.50
 7.25
 7.50
 7.08
Rate of compensation increaseN/A
 2.75
 2.75
 N/A
 N/A
 N/A


(1)2020 Cash Balance Interest Crediting Rate assumption is 0.82% for 2021-2022 and 2.00% for 2023 and all future years for nonunion participants and 1.42% for 2021-2022 and 2.40% for 2023+ for union participants.
(2)2019 Cash Balance Interest Crediting Rate assumption was 2.27% for 2020-2021 and 2.10% for 2022 and all future years for nonunion participants and 2.16% for 2020-2021 and 2.70% for 2022+ for union participants.
(3)2018 Cash Balance Interest Crediting Rate assumption was 3.40% for 2019 and all future years for nonunion participants and 3.15% for 2019-2020 and 3.25% for 2021+ for union participants.
In establishing its assumption as to the expected return on plan assets, PacifiCorp utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.


As a result of a plan amendment effective on January 1, 2017, the benefit obligation for the Retirement Plan is no longer affected by future increases in compensation. As a result of a labor settlement reached with UMWA in December 2014, the benefit obligation for the other postretirement plan is no longer affected by healthcare cost trends.



Contributions and Benefit Payments


Employer contributions to the pension and other postretirement benefit plans are expected to be $4 million and $-$1 million, respectively, during 2018.2021. Funding to PacifiCorp's Retirement Plan trust is based upon the actuarially determined costs of the plan and the requirements of the Internal Revenue Code, the Employee Retirement Income Security Act of 1974 ("ERISA") and the Pension Protection Act of 2006, as amended ("PPA"). PacifiCorp considers contributing additional amounts from time to time in order to achieve certain funding levels specified under the PPA. PacifiCorp's fundingPacifiCorp evaluates a variety of factors, including funded status, income tax laws and regulatory requirements, in determining contributions to its other postretirement benefit plan is subject to tax deductibility and subordination limits and other considerations.plan.


The expected benefit payments to participants in PacifiCorp's pension and other postretirement benefit plans for 20182021 through 20222025 and for the five years thereafter are summarized below (in millions):
Projected Benefit Payments
PensionOther Postretirement
2021$115 $24 
202299 23 
202394 22 
202487 22 
202582 20 
2026-2030341 90 

241

 Projected Benefit Payments
 Pension Other Postretirement
    
2018$108
 $25
2019107
 25
2020103
 26
202199
 23
202294
 23
2023-2027393
 100


Plan Assets


Investment Policy and Asset Allocations


PacifiCorp's investment policy for its pension and other postretirement benefit plans is to balance risk and return through a diversified portfolio of debt securities, equity securities and other alternative investments. Maturities for debt securities are managed to targets consistent with prudent risk tolerances. The plans retain outside investment advisors to manage plan investments within the parameters outlined by the PacifiCorp PensionBerkshire Hathaway Energy Company Investment Committee. The investment portfolio is managed in line with the investment policy with sufficient liquidity to meet near-term benefit payments.


In 2020, the assets of the PacifiCorp Master Retirement Trust were transferred into the BHE Master Retirement Trust.

The target allocations (percentage of plan assets) for PacifiCorp's pension and other postretirement benefit plan assets are as follows as of December 31, 2017:
2020:
Pension(1)
Other Postretirement(1)
%%
Debt securities(2)
25 - 3575 - 83
Equity securities(2)
53 - 6816 - 24
Limited partnership interests7 - 121 - 3
Pension(1)
Other Postretirement(1)
%%
Debt securities(2)
33 - 3833 - 37
Equity securities(2)
49 - 6061 - 65
Limited partnership interests7 - 121 - 3
Other0 - 10 - 1

(1)PacifiCorp's Retirement Plan trust includes a separate account that is used to fund benefits for the other postretirement benefit plan. In addition to this separate account, the assets for the other postretirement benefit plan are held in Voluntary Employees' Beneficiary Association ("VEBA") trusts, each of which has its own investment allocation strategies. Target allocations for the other postretirement benefit plan include the separate account of the Retirement Plan trust and the VEBA trusts.
(2)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.



(1)The trust in which the PacifiCorp Retirement Plan is invested includes a separate account that is used to fund benefits for the other postretirement benefit plan. In addition to this separate account, the assets for the other postretirement benefit plan are held in Voluntary Employees' Beneficiary Association ("VEBA") trusts, each of which has its own investment allocation strategies. Target allocations for the other postretirement benefit plan include the separate account of the Retirement Plan trust and the VEBA trusts.
(2)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.
242


Fair Value Measurements
The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit pension plan (in millions):
Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
As of December 31, 2020:
Cash equivalents$$32 $$32 
Debt securities:
United States government obligations14 14 
Corporate obligations231 231 
Municipal obligations21 21 
Equity securities:
United States companies91 91 
Total assets in the fair value hierarchy$105 $284 $389 
Investment funds(2) measured at net asset value
587 
Limited partnership interests(3) measured at net asset value
88 
Investments at fair value$1,064 
As of December 31, 2019:
Cash equivalents$$24 $$24 
Debt securities:
United States government obligations21 21 
Corporate obligations94 94 
Municipal obligations10 10 
Agency, asset and mortgage-backed obligations42 42 
Equity securities:
United States companies355 355 
International companies15 15 
Investment funds(2)
55 55 
Total assets in the fair value hierarchy$446 $170 $616 
Investment funds(2) measured at net asset value
327 
Limited partnership interests(3) measured at net asset value
93 
Investments at fair value$1,036 

(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.
(2)Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 78% and 22%, respectively, for 2020 and 55% and 45%, respectively, for 2019, and are invested in United States and international securities of approximately 74% and 26%, respectively, for 2020 and 51% and 49%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate.
243

  Input Levels for Fair Value Measurements  
  
Level 1(1)
 
Level 2(1)
 
Level 3(1)
 Total
As of December 31, 2017:        
Cash equivalents $
 $43
 $
 $43
Debt securities:        
United States government obligations 45
 
 
 45
Corporate obligations 
 60
 
 60
Municipal obligations 
 9
 
 9
Agency, asset and mortgage-backed obligations 
 37
 
 37
Equity securities:        
United States companies 416
 
 
 416
International companies 22
 
 
 22
Total assets in the fair value hierarchy $483
 $149
 $
 632
Investment funds(2) measured at net asset value
       416
Limited partnership interests(3) measured at net asset value
       63
Investments at fair value       $1,111
         
As of December 31, 2016:        
Cash equivalents $
 $10
 $
 $10
Debt securities:        
United States government obligations 25
 
 
 25
Corporate obligations 
 36
 
 36
Municipal obligations 
 6
 
 6
Agency, asset and mortgage-backed obligations 
 37
 
 37
Equity securities:        
United States companies 389
 
 
 389
International companies 15
 
 
 15
Investment funds(2)
 83
 
 
 83
Total assets in the fair value hierarchy $512
 $89
 $
 601
Investment funds(2) measured at net asset value
       337
Limited partnership interests(3) measured at net asset value
       61
Investments at fair value       $999


(1)Refer to Note 12 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 60% and 40% respectively, for 2017 and 54% and 46%, respectively, for 2016, and are invested in United States and international securities of approximately 57% and 43%, respectively, for 2017 and 39% and 61%, respectively, for 2016.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit other postretirement plan (in millions):
Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
As of December 31, 2020:
Cash and cash equivalents$$$$
Debt securities:
United States government obligations11 11 
Corporate obligations86 86 
Municipal obligations16 16 
Agency, asset and mortgage-backed obligations44 44 
Equity securities:
United States companies
Total assets in the fair value hierarchy23 147 170 
Investment funds(2) measured at net asset value
153 
Limited partnership interests(3) measured at net asset value
Investments at fair value$327 
As of December 31, 2019:
Cash and cash equivalents$$$$
Debt securities:
United States government obligations12 12 
Corporate obligations26 26 
Municipal obligations
Agency, asset and mortgage-backed obligations22 22 
Equity securities:
United States companies74 74 
International companies
Investment funds(2)
44 44 
Total assets in the fair value hierarchy142 51 193 
Investment funds(2) measured at net asset value
136 
Limited partnership interests(3) measured at net asset value
Investments at fair value$334 
  Input Levels for Fair Value Measurements  
  
Level 1(1)
 
Level 2(1)
 
Level 3(1)
 Total
As of December 31, 2017:        
Cash and cash equivalents $4
 $3
 $
 $7
Debt securities:        
United States government obligations 11
 
 
 11
Corporate obligations 
 16
 
 16
Municipal obligations 
 2
 
 2
Agency, asset and mortgage-backed obligations 
 16
 
 16
Equity securities:        
United States companies 98
 
 
 98
International companies 6
 
 
 6
Investment funds(2)
 32
 
 
 32
Total assets in the fair value hierarchy $151
 $37
 $
 188
Investment funds(2) measured at net asset value
       140
Limited partnership interests(3) measured at net asset value
       4
Investments at fair value       $332
         
As of December 31, 2016:        
Cash and cash equivalents $4
 $1
 $
 $5
Debt securities:        
United States government obligations 11
 
 
 11
Corporate obligations 
 13
 
 13
Municipal obligations 
 2
 
 2
Agency, asset and mortgage-backed obligations 
 13
 
 13
Equity securities:        
United States companies 93
 
 
 93
International companies 4
 
 
 4
Investment funds(2)
 32
 
 
 32
Total assets in the fair value hierarchy $144
 $29
 $
 173
Investment funds(2) measured at net asset value
       125
Limited partnership interests(3) measured at net asset value
       4
Investments at fair value       $302


(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.
(1)Refer to Note 12 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 63% and 37%, respectively, for 2017 and 62% and 38%, respectively, for 2016, and are invested in United States and international securities of approximately 77% and 23%, respectively, for 2017 and 71% and 29%, respectively, for 2016.
(2)Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 38% and 62%, respectively, for 2020 and 56% and 44%, respectively, for 2019, and are invested in United States and international securities of approximately 93% and 7%, respectively, for 2020 and 79% and 21%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.
For level 1 investments, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. For level 2 investments, the fair value is determined using pricing models based on observable market inputs. Shares of mutual funds not registered under the Securities Act of 1933, private equity limited partnership interests, common and commingled trust funds and investment entities are reported at fair value based on the net asset value per unit, which is used for expedience purposes. A fund's net asset value is based on the fair value of the underlying assets held by the fund less its liabilities.



244


Multiemployer and Joint Trustee Pension PlansHydroelectric Relicensing


PacifiCorp contributesis a party to the PacifiCorp/IBEW Local 57 Retirement Trust Fund2016 amended Klamath Hydroelectric Settlement Agreement ("Local 57 Trust Fund"KHSA"), which is intended to resolve disputes surrounding PacifiCorp's efforts to relicense the Klamath Hydroelectric Project. The KHSA establishes a process for PacifiCorp, the states of Oregon and California ("States") (plan number 001)and other stakeholders to assess whether dam removal can occur consistent with the settlement's terms. For PacifiCorp, the key elements of the settlement include: (1) a contribution from PacifiCorp's Oregon and California customers capped at $200 million plus $250 million in California bond funds; (2) complete indemnification from harms associated with dam removal; (3) transfer of the Federal Energy Regulatory Commission ("FERC") license to a third-party dam removal entity, the Klamath River Renewal Corporation ("KRRC"), who would conduct dam removal; and (4) ability for PacifiCorp to operate the facilities for the benefit of customers until dam removal commences.

In September 2016, the KRRC and PacifiCorp filed a joint application with the FERC to transfer the license for the four mainstem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in a July 2020 order, subject to the condition that PacifiCorp remains co-licensee. Under the amended KHSA, PacifiCorp did not agree to remain co-licensee during the surrender and removal process given concerns about liability protections for PacifiCorp and its subsidiary, customers. In November 2020, PacifiCorp entered a memorandum of agreement (the "MOA") with the KRRC, the Karuk Tribe, the Yurok Tribe and the States to continue implementation of the KHSA. The agreement required the States, PacifiCorp and KRRC to file a new license transfer application by January 16, 2021 to remove PacifiCorp from the license for the Klamath Hydroelectric Project and add the States and KRRC as co-licensees for the purposes of surrender. On January 13, 2021, the new license transfer application was filed with the FERC, notifying it that PacifiCorp and the KRRC are not accepting co-licensee status under FERC's July 2020 order, and instead are seeking the license transfer outcome described in the new license transfer application. In addition, the MOA provides for additional contingency funding of $45 million, equally split between PacifiCorp and the States, and for PacifiCorp and the States to equally share in any additional cost overruns in the unlikely event that dam removal costs exceed the $450 million in funding to ensure dam removal is complete. The MOA also requires PacifiCorp to cover the costs associated with certain pre-existing environmental conditions.

As of December 31, 2020, PacifiCorp's assets included $21 million of costs associated with the Klamath hydroelectric system's mainstem dams and the associated relicensing and settlement costs, which are being depreciated and amortized in accordance with state regulatory approvals in Utah, Wyoming and Idaho through December 31, 2022.

    Hydroelectric Commitments

Certain of PacifiCorp's hydroelectric licenses contain requirements for PacifiCorp to make certain capital and operating expenditures related to its hydroelectric facilities, which are estimated to be approximately $182 million over the next ten years.
187


Guarantees

The Company has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on the Company's consolidated financial results.

(17)    Revenue from Contracts with Customers

Energy West Mining Company, previously contributedProducts and Services

The following table summarizes the Company's energy products and services revenue by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the UMWA 1974 Pension Plan (plan number 002). ContributionsCompany's reportable segment information included in Note 22 (in millions):
For the Year Ended December 31, 2020
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,932 $1,924 $2,566 $$$$$(1)$9,421 
Retail Gas505 114 619 
Wholesale107 199 45 17 (2)366 
Transmission and
distribution
96 60 95 887 641 1,779 
Interstate pipeline1,397 (139)1,258 
Other108 110 
Total Regulated5,243 2,688 2,822 887 1,414 641 (142)13,553 
Nonregulated16 26 134 18 817 515 1,528 
Total Customer Revenue5,243 2,704 2,824 913 1,548 659 817 373 15,081 
Other revenue(1)
98 24 30 109 30 119 65 475 
Total$5,341 $2,728 $2,854 $1,022 $1,578 $659 $936 $438 $15,556 
For the Year Ended December 31, 2019
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,789 $1,938 $2,740 $$$$$(2)$9,465 
Retail Gas570 116 686 
Wholesale99 309 51 (2)457 
Transmission and
distribution
98 57 98 876 690 1,819 
Interstate pipeline1,122 (118)1,004 
Other
Total Regulated4,986 2,874 3,007 876 1,122 690 (122)13,433 
Nonregulated30 36 17 744 577 1,404 
Total Customer Revenue4,986 2,904 3,007 912 1,122 707 744 455 14,837 
Other revenue(1)
82 23 30 101 188 101 534 
Total$5,068 $2,927 $3,037 $1,013 $1,131 $707 $932 $556 $15,371 
188


For the Year Ended December 31, 2018
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,732 $1,915 $2,773 $$$$$(1)$9,419 
Retail Gas636 101 737 
Wholesale55 411 39 (4)501 
Transmission and
distribution
103 56 96 892 700 (1)1,846 
Interstate pipeline1,232 (125)1,107 
Other
Total Regulated4,890 3,018 3,011 892 1,232 700 (131)13,612 
Nonregulated14 39 10 673 624 1,360 
Total Customer Revenue4,890 3,032 3,011 931 1,232 710 673 493 14,972 
Other revenue(1)
136 21 28 89 (29)235 121 601 
Total$5,026 $3,053 $3,039 $1,020 $1,203 $710 $908 $614 $15,573 
(1)Includes net payments to these pension plans are basedcounterparties for the financial settlement of certain derivative contracts at BHE Pipeline Group.

Real Estate Services

The following table summarizes the Company's real estate services revenue by line of business (in millions):
HomeServices
Years Ended December 31,
202020192018
Customer Revenue:
Brokerage$4,520 $4,028 $3,882 
Franchise76 68 67 
Total Customer Revenue4,596 4,096 3,949 
Mortgage and other revenue800 377 265 
Total$5,396 $4,473 $4,214 

Remaining Performance Obligations

The following table summarizes the Company's revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of December 31, 2020, by reportable segment (in millions):
Performance obligations expected to be satisfied
Less than 12 monthsMore than 12 monthsTotal
BHE Pipeline Group$2,563 $22,088 $24,651 
BHE Transmission647 647 
Total$3,210 $22,088 $25,298 

189


(18)BHE Shareholders' Equity

Preferred Stock

In October 2020, BHE issued 3,750,000 shares of its Perpetual Preferred Stock (the "4% Perpetual Preferred Stock") for $3.75 billion to certain subsidiaries of Berkshire Hathaway Inc. The 4% Perpetual Preferred Stock has a liquidation preference of $1,000 per share and currently pays a 4.00% dividend per share on the termsliquidation preference. Dividends shall accrue and accumulate daily, be cumulative, compound semi-annually and, if declared, be payable in cash semi-annually in arrears on May 15 and November 15 of collective bargaining agreements.each year. If dividends are not declared and paid, any accumulating dividends shall continue to accumulate and compound. BHE may not make any dividends on shares of any other class or series of its capital stock (other than for dividends on shares of common stock payable in shares of common stock, unless the holders of the then outstanding 4% Perpetual Preferred Stock shall first receive, or simultaneously receive, a dividend in an amount at least equivalent to the amount accumulated and not previously paid. BHE may not declare or pay any dividends on shares of the 4% Perpetual Preferred Stock if such declaration or payment would constitute an event of default on BHE's senior indebtedness (as defined). BHE may, at its option, redeem the 4% Perpetual Preferred Stock in whole or in part at any time at a price per share equal to the liquidation preference.


Common Stock

On March 14, 2000, and as amended on December 7, 2005, BHE's shareholders entered into a Shareholder Agreement that provides specific rights to certain shareholders. One of these rights allows certain shareholders the ability to put their common shares to BHE at the then-current fair value dependent on certain circumstances controlled by BHE.

Restricted Net Assets

BHE has maximum debt-to-total capitalization percentage restrictions imposed by its senior unsecured credit facilities expiring in June 2022 which, in certain circumstances, limit BHE's ability to make cash dividends or distributions. As a result of the Utah Mine Disposition and UMWA labor settlement, PacifiCorp's subsidiary, Energy West Mining Company, triggered involuntary withdrawal from the UMWA 1974 Pension Plan in June 2015 when the UMWA employees ceased performing work for the subsidiary. PacifiCorp recorded its estimatethis restriction, BHE has restricted net assets of the withdrawal obligation in$14.7 billion as of December 2014 when withdrawal was considered probable and deferred the portion31, 2020.

Certain of the obligation considered probable of recoveryBHE's subsidiaries have restrictions on their ability to a regulatory asset. PacifiCorp has subsequently revised its estimatedividend, loan or advance funds to BHE due to changes in factsspecific legal or regulatory restrictions, including, but not limited to, maximum debt-to-total capitalization percentages and circumstances for a withdrawal occurring by July 2015.commitments made to state commissions. As communicated in a letter received in August 2016, the plan trustees have determined a withdrawal liability of $115 million. Energy West Mining Company began making installment payments in November 2016 and has the option to elect a lump sum payment to settle the withdrawal obligation. The ultimate amount paid by Energy West Mining Company to settle the obligation is dependent on a variety of factors, including the results of ongoing negotiations with the plan trustees.

The Local 57 Trust Fund is a joint trustee plan such that the board of trustees is represented by an equal number of trustees from PacifiCorp and the union. The Local 57 Trust Fund was established pursuant to the provisions of the Taft-Hartley Act and although formed with the ability for other employers to participate in the plan, there are no other employers that participate in this plan.

The risk of participating in multiemployer pension plans generally differs from single-employer plans in that assets are pooled such that contributions by one employer may be used to provide benefits to employees of other participating employers and plan assets cannot revert back to employers. If an employer ceases participation in the plan, the employer may be obligated to pay a withdrawal liability based on the participants' unfunded, vested benefits in the plan. This occurred as a result of Energy West Mining Company's withdrawal from the UMWA 1974 Pension Plan. If participating employers withdraw from a multiemployer plan, the unfunded obligationsthese restrictions, BHE's subsidiaries had restricted net assets of the plan may be borne by the remaining participating employers, including any employers that withdrew during the three years prior to a mass withdrawal.$18.1 billion as of December 31, 2020.


(19)Components of Accumulated Other Comprehensive Loss, Net

The following table presents PacifiCorp's and Energy West Mining Company's participationshows the change in individually significant joint trustee and multiemployer pension plansaccumulated other comprehensive loss attributable to BHE shareholders by each component of other comprehensive income (loss), net of applicable income taxes, for the year ended December 31 (in millions):
UnrecognizedForeignUnrealizedUnrealizedAOCI
Amounts onCurrencyGains onGains (Losses)Attributable
RetirementTranslationMarketableon Cash FlowTo BHE
BenefitsAdjustmentSecuritiesHedgesShareholders, Net
Balance, December 31, 2017$(383)$(1,129)$1,085 $29 $(398)
Adoption of ASU 2016-01— — (1,085)— (1,085)
Other comprehensive income (loss)25 (494)(462)
Balance, December 31, 2018(358)(1,623)36 (1,945)
Other comprehensive (loss) income(59)327 (29)239 
Balance, December 31, 2019(417)(1,296)(1,706)
Other comprehensive (loss) income(65)233 (15)153 
Balance, December 31, 2020$(482)$(1,063)$$(8)$(1,553)

Reclassifications from AOCI to net income for the years ended December 31, (dollars2020, 2019 and 2018 were insignificant. Additionally, refer to the "Foreign Operations" discussion in Note 13 for information about unrecognized amounts on retirement benefits reclassifications from AOCI that do not impact net income in their entirety.
190


(20)Variable Interest Entities and Noncontrolling Interests

The primary beneficiary of a VIE is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE.

As part of the GT&S Transaction, BHE acquired an indirect 25% economic interest in Cove Point, consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE concluded that Cove Point is a VIE due to the limited partners lacking the characteristics of a controlling financial interest. BHE is the primary beneficiary of Cove Point as it has the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to it.

Included in noncontrolling interests on the Consolidated Balance Sheets are (i) Dominion Energy's 50% interest in Cove Point and Brookfield Super-Core Infrastructure Partner's 25% interest in Cove Point and (ii) preferred securities of subsidiaries of $58 million as of December 31, 2020 and 2019, consisting of $56 million of 8.061% cumulative preferred securities of Northern Electric plc, a subsidiary of Northern Powergrid, which are redeemable in the event of the revocation of Northern Electric plc's electricity distribution license by the Secretary of State, and $2 million of nonredeemable preferred stock of PacifiCorp.

(21)Supplemental Cash Flow Disclosures

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):

As of December 31,
20202019
Cash and cash equivalents$1,290 $1,040 
Restricted cash and cash equivalents140 212 
Investments and restricted cash and cash equivalents and investments15 16 
Total cash and cash equivalents and restricted cash and cash equivalents$1,445 $1,268 
    PPA zone status or            
    plan funded status percentage for            
    plan years beginning July 1,     
Contributions(1)
  
Plan name Employer Identification Number 2017 2016 2015 Funding improvement plan 
Surcharge imposed under PPA(1)
 2017 2016 2015 
Year contributions to plan exceeded more than 5% of total contributions(2)
UMWA 1974 Pension Plan 52-1050282 Critical and Declining Critical and Declining Critical and Declining Implemented Yes $
 $
 $1
 None
Local 57 Trust Fund 87-0640888 At least 80% At least 80% At least 80% None None $7
 $8
 $8
 2015, 2014, 2013

(1)PacifiCorp's and Energy West Mining Company's minimum contributions to the plans are based on the amount of wages paid to employees covered by the Local 57 Trust Fund collective bargaining agreements and the number of mining hours worked for the UMWA 1974 Pension Plan, respectively, subject to ERISA minimum funding requirements. As a result of the plan's critical status, Energy West Mining Company was required to begin paying a surcharge for hours worked on and after December 1, 2014.

(2)For the UMWA 1974 Pension Plan, information is for plan years beginning July 1, 2015, 2014 and 2013. Information for the plan year beginning July 1, 2016 is not yet available. For the Local 57 Trust Fund, information is for plan years beginning July 1, 2015, 2014 and 2013. Information for the plan year beginning July 1, 2016 is not yet available.


The current collective bargaining agreements governing the Local 57 Trust Fund expire in 2020.


Defined Contribution Plan

PacifiCorp's 401(k) plan covers substantially all employees. PacifiCorp's matching contributions are based on each participant's levelsummary of contribution and,supplemental cash flow disclosures as of January 1, 2017, all participants receive contributions based on eligible pre-tax annual compensation. Contributions cannot exceedand for the maximum allowable for tax purposes. PacifiCorp's contributionsyears ending December 31 is as follows (in millions):
202020192018
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$1,855 $1,723 $1,713 
Income taxes received, net(1)
$1,361 $850 $780 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$801 $888 $823 

(1)Includes $1,504 million, $942 million and $884 million of income taxes received from Berkshire Hathaway in 2020, 2019 and 2018, respectively.

191


(22)Segment Information

The Company's reportable segments with foreign operations include Northern Powergrid, whose business is principally in the United Kingdom, BHE Transmission, whose business includes operations in Canada, and BHE Renewables, whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the 401(k) plan were $39 million, $34 millionCompany's reportable segments is shown below (in millions):
Years Ended December 31,
202020192018
Operating revenue:
PacifiCorp$5,341 $5,068 $5,026 
MidAmerican Funding2,728 2,927 3,053 
NV Energy2,854 3,037 3,039 
Northern Powergrid1,022 1,013 1,020 
BHE Pipeline Group1,578 1,131 1,203 
BHE Transmission659 707 710 
BHE Renewables936 932 908 
HomeServices5,396 4,473 4,214 
BHE and Other(1)
438 556 614 
Total operating revenue$20,952 $19,844 $19,787 
   
Depreciation and amortization:   
PacifiCorp$1,209 $954 $979 
MidAmerican Funding716 638 609 
NV Energy502 482 456 
Northern Powergrid266 254 250 
BHE Pipeline Group231 115 126 
BHE Transmission201 240 247 
BHE Renewables284 282 268 
HomeServices45 47 51 
BHE and Other(1)
(1)(2)
Total depreciation and amortization$3,455 $3,011 $2,984 
   
Operating income:   
PacifiCorp$924 $1,072 $1,051 
MidAmerican Funding454 549 550 
NV Energy649 655 607 
Northern Powergrid421 472 486 
BHE Pipeline Group779 572 525 
BHE Transmission316 323 313 
BHE Renewables291 336 325 
HomeServices511 222 214 
BHE and Other(1)
(54)(51)
Total operating income4,291 4,150 4,072 
Interest expense(2,021)(1,912)(1,838)
Capitalized interest80 77 61 
Allowance for equity funds165 173 104 
Interest and dividend income71 117 113 
Gains (losses) on marketable securities, net4,797 (288)(538)
Other, net88 97 (9)
Total income before income tax expense (benefit) and equity (loss) income$7,471 $2,414 $1,965 
192


Years Ended December 31,
202020192018
Interest expense:
PacifiCorp$426 $401 $384 
MidAmerican Funding322 302 247 
NV Energy227 229 224 
Northern Powergrid130 139 141 
BHE Pipeline Group74 52 43 
BHE Transmission148 157 167 
BHE Renewables166 174 201 
HomeServices11 25 23 
BHE and Other(1)
517 433 408 
Total interest expense$2,021 $1,912 $1,838 
Income tax expense (benefit):
PacifiCorp$(75)$61 $
MidAmerican Funding(574)(377)(262)
NV Energy61 98 100 
Northern Powergrid96 59 61 
BHE Pipeline Group162 138 119 
BHE Transmission13 11 
BHE Renewables(2)
(602)(325)(158)
HomeServices138 51 52 
BHE and Other(1)
1,089 (314)(507)
Total income tax expense (benefit)$308 $(598)$(583)
Net income attributable to BHE shareholders:
PacifiCorp$741 $773 $739 
MidAmerican Funding818 781 669 
NV Energy410 365 317 
Northern Powergrid201 256 239 
BHE Pipeline Group528 422 387 
BHE Transmission231 229 210 
BHE Renewables(2)
521 431 329 
HomeServices375 160 145 
BHE and Other3,118 (467)(467)
Total net income attributable to BHE shareholders$6,943 $2,950 $2,568 
Capital expenditures:
PacifiCorp$2,540 $2,175 $1,257 
MidAmerican Funding1,836 2,810 2,332 
NV Energy675 657 503 
Northern Powergrid682 602 566 
BHE Pipeline Group659 687 427 
BHE Transmission372 247 270 
BHE Renewables95 122 817 
HomeServices36 54 47 
BHE and Other(130)10 22 
Total capital expenditures$6,765 $7,364 $6,241 
193


As of December 31,
202020192018
Property, plant and equipment, net:
PacifiCorp$22,430 $20,973 $19,570 
MidAmerican Funding19,279 18,377 16,169 
NV Energy9,865 9,613 9,367 
Northern Powergrid7,230 6,606 6,007 
BHE Pipeline Group15,097 5,482 4,904 
BHE Transmission6,445 6,157 5,824 
BHE Renewables5,645 5,976 6,155 
HomeServices159 161 141 
BHE and Other(22)(40)(50)
Total property, plant and equipment, net$86,128 $73,305 $68,087 
Total assets:
PacifiCorp$26,862 $24,861 $23,478 
MidAmerican Funding23,530 22,664 20,029 
NV Energy14,501 14,128 14,119 
Northern Powergrid8,782 8,385 7,427 
BHE Pipeline Group19,541 6,100 5,511 
BHE Transmission9,208 8,776 8,424 
BHE Renewables12,004 9,961 8,666 
HomeServices4,955 3,846 2,797 
BHE and Other7,933 1,330 1,738 
Total assets$127,316 $100,051 $92,189 
Years Ended December 31,
202020192018
Operating revenue by country:
United States$19,254 $18,108 $18,014 
United Kingdom1,022 1,011 1,017 
Canada653 706 710 
Philippines and other23 19 46 
Total operating revenue by country$20,952 $19,844 $19,787 
Income before income tax expense (benefit) and equity (loss) income by country:
United States$6,954 $1,866 $1,425 
United Kingdom338 326 307 
Canada173 178 155 
Philippines and other44 78 
Total income before income tax expense (benefit) and equity (loss) income by country:$7,471 $2,414 $1,965 
194


As of December 31,
202020192018
Property, plant and equipment, net by country:
United States$72,583 $60,634 $56,362 
United Kingdom7,134 6,504 5,895 
Canada6,401 6,157 5,817 
Philippines and other10 10 13 
Total property, plant and equipment, net by country$86,128 $73,305 $68,087 

(1)The differences between the reportable segment amounts and $35 millionthe consolidated amounts, described as BHE and Other, relate to other corporate entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.

(2)Income tax expense (benefit) includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

The following table shows the change in the carrying amount of goodwill by reportable segment for the years ended December 31, 2017, 20162020 and 2015, respectively.2019 (in millions):

BHEBHE
MidAmericanNVNorthernPipelineBHEBHEHome-and
PacifiCorpFundingEnergyPowergridGroupTransmissionRenewablesServicesOtherTotal
December 31, 2018$1,129 $2,102 $2,369 $952 $73 $1,448 $95 $1,427 $$9,595 
Acquisitions29 29 
Foreign currency translation26 72 98 
December 31, 20191,129 2,102 2,369 978 73 1,520 95 1,456 9,722 
Acquisitions1,730 1,731 
Foreign currency translation22 31 53 
December 31, 2020$1,129 $2,102 $2,369 $1,000 $1,803 $1,551 $95 $1,457 $$11,506 

(10)Asset Retirement Obligations
195



PacifiCorp estimatesand its ARO liabilities based upon detailed engineering calculationssubsidiaries
Consolidated Financial Section

196


Item 6.    Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of PacifiCorp during the periods included herein. Explanations include management's best estimate of the amountimpact of weather, customer growth, usage trends and timingother factors. This discussion should be read in conjunction with Item 6 of this Form 10-K and with PacifiCorp's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. PacifiCorp's actual results in the future could differ significantly from the historical results.

Results of Operations

Overview

Net income for the year ended December 31, 2020, was $739 million, a decrease of $32 million, or 4%, compared to 2019, primarily due to costs associated with the 2020 Wildfires and the Klamath Hydroelectric Project of $169 million, higher net interest expense of $36 million from higher long-term debt and lower cash spendingbalances, higher pension and other postretirement costs of $13 million, and higher property taxes of $10 million, partially offset by lower income tax expense of $99 million (excluding $37 million fully offset primarily in depreciation expense) primarily driven by higher PTCs substantially due to repowered wind-powered generating facilities and lower pre-tax income, higher utility margin of $47 million (excluding $231 million fully offset in depreciation, operating, other income/expense and income tax expense as a result of regulatory adjustments as ordered by the UPSC, the OPUC and the IPUC), higher allowances for equity and borrowed funds used during construction of $38 million, and prior year costs associated with the early retirement of a third partycoal-fueled generation unit totaling $24 million. Utility margin increased primarily due to performlower coal-fueled generation volumes, lower purchased electricity prices, higher average retail rates, and lower natural gas-fueled generation costs, partially offset by lower net deferrals of incurred net power costs in accordance with established adjustment mechanisms, lower retail customer volumes and higher purchased electricity volumes. Retail customer volumes decreased 1.4% primarily due to impacts of COVID-19, which resulted in lower industrial and commercial customer usage and higher residential customer usage, partially offset by an increase in the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for aaverage number of reasons, including changesresidential and commercial customers and the favorable impact of weather. Energy generated decreased 4% for 2020 compared to 2019 primarily due to lower coal-fueled generation, partially offset by higher wind and hydroelectric-powered generation. Wholesale electricity sales volumes decreased 4% and purchased electricity volumes increased 9%.

Net income for the year ended December 31, 2019, was $771 million, an increase of $33 million, or 4%, compared to 2018, primarily due to higher allowances for funds used during construction of $55 million, lower pension and post retirement expense of $11 million primarily due to a prior year pension settlement charge of $22 million, partially offset by higher non-service cost components of pension and other postretirement expenses of $11 million, and higher utility margin of $4 million, partially offset by higher depreciation and amortization expense of $25 million from additional plant placed in-service, excluding a $49 million decrease in laws and regulations, plan revisions, inflation and changesaccelerated depreciation expense (offset in income tax expense) associated with Oregon's share of certain retired wind equipment in the amountcurrent year and timingUtah's share of certain thermal plant units in the expected work.

PacifiCorp does not recognize liabilities for AROs for whichprior year, lower PTCs of $21 million from expirations, higher interest expense of $17 million, and higher operations and maintenance expense of $10 million, primarily due to costs associated with the fair value cannot be reasonably estimated. Dueearly retirement of Cholla Unit 4 of $24 million, increase in vegetation management costs of $11 million, partially offset by a decrease in expenses primarily due to lower wildfire costs of $9 million. Utility margin increased primarily due to lower coal-fueled generation volumes, higher retail revenue, and higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms, partially offset by higher purchased electricity costs, and higher natural gas-fueled generation costs. Retail volumes increased 0.4% primarily due to the indeterminate removal date,increase in the fair valueaverage number of residential and commercial customers and the associated liabilitiesfavorable impact of weather on certain transmission, distributionresidential customer volumes in all states except Utah, partially offset by lower commercial usage primarily in Utah and other assets cannot currently be estimated,Washington. Energy generated decreased 3% for 2019 compared to 2018 primarily due to lower coal-fueled, wind and no amountshydroelectric-powered generation, partially offset by higher natural gas-fueled generation. Wholesale electricity sales volumes decreased 34% and purchased electricity volumes decreased 5%.

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Non-GAAP Financial Measure

Management utilizes various key financial measures that are recognizedprepared in accordance with GAAP, as well as non-GAAP financial measures such as, utility margin, to help evaluate results of operations. Utility margin is calculated as operating revenue less cost of fuel and energy, which are captions presented on the Consolidated Financial Statements other than thoseof Operations.

PacifiCorp's cost of fuel and energy is generally recovered from its retail customers through regulatory recovery mechanisms and, as a result, changes in PacifiCorp's expenses included in theregulatory recovery mechanisms result in comparable changes to revenue. As such, management believes utility margin more appropriately and concisely explains profitability rather than a discussion of revenue and cost of removal regulatory liability established via approved depreciation ratesfuel and energy separately. Management believes the presentation of utility margin provides meaningful and valuable insight into the information management considers important to running the business and a measure of comparability to others in the industry.
Utility margin is not a measure calculated in accordance with accepted regulatory practices. Cost of removal regulatory liabilities totaled $955 millionGAAP and $917 millionshould be viewed as of December 31, 2017a supplement to, and 2016, respectively.

not a substitute for, operating income, which is the most directly comparable financial measure prepared in accordance with GAAP. The following table reconciles the beginning and ending balancesprovides a reconciliation of PacifiCorp's ARO liabilitiesutility margin to operating income for the years ended December 31 (in millions):

20202019Change20192018Change
Utility margin:
Operating revenue$5,341 $5,068 $273 %$5,068 $5,026 $42 %
Cost of fuel and energy1,790 1,795 (5)— 1,795 1,757 38 
Utility margin3,551 3,273 278 3,273 3,269 — 
Operations and maintenance1,209 1,048 161 15 1,048 1,038 10 
Depreciation and amortization1,209 954 255 27 954 979 (25)(3)
Property and other taxes209 199 10 199 201 (2)(1)
Operating income$924 $1,072 $(148)(14)%$1,072 $1,051 $21 %

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 2017 2016
    
Beginning balance$215
 $224
Change in estimated costs(8) 2
Additions6
 
Retirements(6) (19)
Accretion8
 8
Ending balance$215
 $215
    
Reflected as:   
Other current liabilities$25
 $21
Other long-term liabilities190
 194
 $215
 $215
Utility Margin


CertainA comparison of PacifiCorp's decommissioningkey operating results related to utility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue5,341 $5,068 $273 %$5,068 $5,026 $42 %
Cost of fuel and energy1,790 1,795 (5)— 1,795 1,757 38 
Utility margin$3,551 $3,273 $278 %$3,273 $3,269 $— %
Sales (GWhs):
Residential17,150 16,668 482 %16,668 16,227 441 %
Commercial(1)
17,727 18,151 (424)(2)18,151 18,078 73 — 
Industrial, irrigation and other(1)
19,683 20,524 (841)(4)20,524 20,810 (286)(1)
Total retail54,560 55,343 (783)(1)55,343 55,115 228 — 
Wholesale5,249 5,480 (231)(4)5,480 8,309 (2,829)(34)
Total sales59,809 60,823 (1,014)(2)%60,823 63,424 (2,601)(4)%
Average number of retail customers
(in thousands)1,967 1,933 34 %1,933 1,900 33 %
Average revenue per MWh:
Retail$90.59 $84.80 $5.79 %$84.80 $84.43 $0.37 — %
Wholesale$35.56 $35.21 $0.35 %$35.21 $22.56 $12.65 56 %
Heating degree days10,155 11,143 (988)(9)%11,143 9,810 1,333 14 %
Cooling degree days2,111 1,773 338 19 %1,773 1,983 (210)(11)%
Sources of energy (GWhs)(1):
Coal30,636 34,510 (3,874)(11)%34,510 36,481 (1,971)(5)%
Natural gas12,045 12,058 (13)— 12,058 10,555 1,503 14 
Hydroelectric(2)
3,044 2,842 202 2,842 3,263 (421)(13)
Wind and other(2)
3,948 2,385 1,563 66 2,385 3,205 (820)(26)
Total energy generated49,673 51,795 (2,122)(4)51,795 53,504 (1,709)(3)
Energy purchased14,054 12,906 1,148 12,906 13,579 (673)(5)
Total63,727 64,701 (974)(2)%64,701 67,083 (2,382)(4)%
Average cost of energy per MWh:
Energy generated(3)
$18.74 $19.36 $(0.62)(3)%$19.36 $18.91 $0.45 %
Energy purchased$47.60 $54.20 $(6.60)(12)%$54.20 $48.23 $5.97 12 %

(1)    GWh amounts are net of energy used by the related generating facilities.
(2)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of RECs or other environmental commodities.
(3)    The average cost per MWh of energy generated includes only the cost of fuel associated with the generating facilities.

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Year Ended December 31, 2020 Compared to Year Ended December 31, 2019

Utility margin increased $278 million for 2020 compared to 2019 primarily due to:
$249 million increase in retail revenue, including $234 million fully offset in depreciation expense and reclamation obligations relateincome tax expense due to jointly owned facilitiesaccelerated depreciation of certain coal-fueled units in Utah and Oregon and recognition of certain Utah regulatory balances and higher average retail prices, partially offset by lower retail customer volumes. Retail customer volumes decreased 1.4% primarily due to impacts of COVID-19, which resulted in lower industrial and commercial customer usage and higher residential customer usage, partially offset by an increase in the average number of residential and commercial customers and the favorable impact of weather;
$49 million of lower coal-fueled generation costs primarily due to lower volumes of $78 million, partially offset by $37 million of accelerated recognition of certain Utah regulatory balances associated with the 2015 Utah mine sites. PacifiCorp is committeddisposition and certain Cholla Unit 4 related closure costs in Oregon and Idaho (offset in income tax expense) and higher prices of $9 million;
$34 million of higher other revenue due to payrecognition of prior OATT revenue related deferrals in Oregon used to accelerate the depreciation of certain retired wind equipment as a proportionateresult of the 2020 Oregon RAC settlement (offset in depreciation expense);
$31 million of lower purchased electricity costs, primarily due to lower average market prices, partially offset by higher volumes; and
$24 million of lower natural gas-fueled generation costs primarily due to lower average prices and lower volumes.
The increases above were partially offset by:
$106 million primarily from lower deferrals and higher amortization of previous deferrals of incurred net power costs in accordance with established adjustment mechanisms.
Operations and maintenance increased $161 million, or 15%, for 2020 compared to 2019 primarily due to costs associated with the 2020 Wildfires of $136 million, net of expected insurance recoveries, and costs associated with the Klamath Hydroelectric Project of $33 million, higher vegetation management and wildfire mitigation costs of $26 million and increased bad debt expense of $5 million, partially offset by prior year costs associated with the early retirement of Cholla Unit 4 of $24 million and lower employee related expenses of $7 million as a result of COVID-19.
Depreciation and amortization increased $255 million, or 27%, for 2020 compared to 2019 primarily due to current year accelerated depreciation of $376 million as a result of regulatory adjustments ordered by the UPSC, the OPUC and the IPUC (fully offset in retail revenue, other revenue, and income tax expense), including accelerated depreciation of certain coal-fueled units and Oregon's share of certain retired wind equipment as a result the 2020 Oregon RAC settlement, partially offset by prior year accelerated depreciation of $120 million (offset in income tax expense) on Oregon's share of certain retired wind equipment due to repowering as a result of the 2019 Oregon RAC settlement.

Property and other taxes increased $10 million, or 5%, for 2020 compared to 2019 primarily due to higher property taxes in Oregon and Utah.

Interest expense increased $25 million, or 6%, for 2020 compared to 2019 primarily due to higher average long-term debt balances, partially offset by a lower weighted average long-term debt interest rate.

Allowance for borrowed and equity funds increased $38 million, or 35%, for 2020 compared to 2019 primarily due to higher qualified construction work-in-progress balances.

Interest and dividend income decreased$11 million, or 52%, for 2020 compared to 2019 primarily due to lower average interest rates in the current year.

Other, net decreased $22 million, or 69% for 2020 compared to 2019 primarily due to higher pension and post retirement costs of $13 million and costs associated with the recognition of Utah's share of the decommissioningpost retirement settlement loss associated with the 2015 Utah mine disposition (offset in income tax expense).

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Income tax (benefit) expense decreased $136 million to a benefit of $75 million for 2020 compared to an expense of $61 million for 2019. The effective tax rate was (11)% and 7% for 2020 and 2019, respectively. The effective tax rate decreased primarily as a result of higher amortization of excess deferred income taxes in 2020 and higher PTCs. In 2020, $118 million of excess deferred income taxes was amortized pursuant to regulatory orders from Utah, Oregon and Idaho, whereby portions of excess deferred income taxes were used to accelerate depreciation of certain coal-fueled units and Oregon's share of certain retired wind equipment or reclamation costs.offset other regulatory balances for these jurisdictions. In 2019, $91 million of Oregon's allocated excess deferred income taxes was amortized pursuant to the 2019 Oregon RAC proceeding, whereby a portion of Oregon's allocated excess deferred income taxes was used to accelerate depreciation for Oregon's share of certain retired wind equipment due to repowering.

Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

Utility margin increased $4 million for 2019 compared to 2018 primarily due to:
$54 million of lower coal-fueled generation costs primarily due to lower average volumes;
$40 million of higher retail revenue primarily from higher retail customer volumes. Retail volumes increased 0.4% primarily due to an increase in the average number of residential and commercial customers and the favorable impact of weather on residential customer volumes in all states except Utah, partially offset by lower commercial usage primarily in Utah and Washington;
$11 million of higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms; and
$5 million of higher wholesale revenue from higher average market prices, offset by lower volumes.
The increases above were partially offset by:
$45 million of higher purchased electricity costs due to higher average market prices, offset by lower volumes;
$45 million of higher natural gas-fueled generation costs due to higher average volumes and prices; and
$11 million of higher wheeling costs and lower wheeling revenues.

Operations and maintenance increased $10 million, or 1%, for 2019 compared to 2018 primarily due to costs associated with the early retirement of Cholla Unit 4 in December 2020 of $24 million and an $11 million increase in vegetation management costs, partially offset by a $9 million decrease in fire suppression costs, a $7 million decrease in materials and supply expense primarily due to usage, and reduced labor and benefits expense primarily due to higher capitalized labor related to construction projects.

Depreciation and amortization decreased $25 million, or 3%, for 2019 compared to 2018 primarily due to a decrease in accelerated depreciation (offset in income tax expense) resulting from $174 million of accelerated depreciation in the prior year for Utah's share of certain thermal plant units pursuant to a 2017 Tax Reform settlement approved by the UPSC compared to $120 million of accelerated depreciation in the current year for Oregon's share of certain retired wind equipment due to repowering as ordered in the Oregon RAC proceeding, partially offset by higher plant-in-service.

Interest expense increased $17 million, or 4%, for 2019 compared to 2018 primarily due to higher average long-term debt balances.

Allowance for borrowed and equity funds increased $55 million, or 104%, for 2019 compared to 2018 primarily due to higher qualified construction work-in-progress balances.

Interest and dividend income increased $6 million, or 40%, for 2019 compared to 2018 primarily due to higher average cash and cash equivalents balances.

Other, net increased $24 million, or 300% for 2019 compared to 2018 primarily due to the prior year pension settlement charge of $22 million and higher cash surrender value of company owned life insurance policies of $5 million, partially offset by higher non-service cost components of pension and other postretirement expense of $11 million.

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Income tax expense increased $56 million for 2019 compared to 2018 and the effective tax rate was 7% and 1% for 2019 and 2018, respectively. The effective tax rate increased primarily as a result of lower amortization of excess deferred income taxes in 2019 and expiring PTCs, slightly offset by the effects of ratemaking. In 2019, $91 million of Oregon's allocated excess deferred income taxes was amortized pursuant to the 2019 Oregon RAC proceeding, whereby a portion of Oregon's allocated excess deferred income taxes was used to accelerate depreciation for Oregon's share of certain retired wind equipment due to repowering. In 2018, $127 million of Utah's allocated excess deferred income taxes was amortized pursuant to a 2017 Tax Reform settlement approved by the UPSC, whereby a portion of Utah's allocated excess deferred incomes taxes was used to accelerate depreciation on Utah's share of certain coal-fueled units.

Liquidity and Capital Resources

As of December 31, 2020, PacifiCorp's total net liquidity was as follows (in millions):
Cash and cash equivalents$13 
Credit facilities(1)
1,200 
Less:
Short-term debt(93)
Tax-exempt bond support(218)
Net credit facilities889 
Total net liquidity$902 
Credit facilities:
Maturity dates2022

(1)Refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding PacifiCorp's credit facilities.
Operating Activities

Net cash flows from operating activities for the years ended December 31, 2020 and 2019 were $1.6 billion and $1.5 billion, respectively. The increase is primarily due to lower purchased power prices, lower cash paid for income taxes and lower operating expense payments due to timing, partially offset by lower collections from wholesale and retail customers and higher fuel expense payments due to timing.

Net cash flows from operating activities for the years ended December 31, 2019 and 2018 were $1.5 billion and $1.8 billion, respectively. The decrease is primarily due to higher payments for purchased power, timing of payments for operating expenses and lower receipts from retail customers.

The timing of PacifiCorp's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2020 and 2019 were $(2.5) billion and $(2.2) billion, respectively. The increase in net cash outflows from investing activities is mainly due to an increase in capital expenditures of $365 million, partially offset by proceeds from the settlement of notes receivable of $25 million associated with the sale of certain Utah mining assets in 2015. Refer to "Future Uses of Cash" for discussion of capital expenditures.

Net cash flows from investing activities for the years ended December 31, 2019 and 2018 were $(2.2) billion and $(1.3) billion, respectively. The increase in net cash outflows from investing activities is mainly due to an increase in capital expenditures of $918 million.


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Financing Activities

Short-term Debt

Regulatory authorities limit PacifiCorp to $1.5 billion of short-term debt. As of December 31, 2020, PacifiCorp had $93 million of short-term debt outstanding at a weighted average interest rate of 0.16%. As of December 31, 2019, PacifiCorp had $130 million of short-term debt outstanding at a weighted average interest rate of 2.05%. For further discussion, refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

    Long-term Debt

In April 2020, PacifiCorp issued $400 million of its 2.70% First Mortgage Bonds due 2030 and $600 million of its 3.30% First Mortgage Bonds due 2051. PacifiCorp used the net proceeds to fund capital expenditures, primarily for renewable resources and associated transmission projects, and for general corporate purposes.

PacifiCorp made repayments on long-term debt totaling $38 million and $350 million during the years ended December 31, 2020 and 2019, respectively.

PacifiCorp's Mortgage and Deed of Trust creates a lien on most of PacifiCorp's electric utility property, allowing the issuance of bonds based on a percentage of utility property additions, bond credits arising from retirement of previously outstanding bonds or deposits of cash. The amount of bonds that PacifiCorp may issue generally is also subject to a net earnings test. As of December 31, 2020, PacifiCorp estimated it would be able to issue up to $10.8 billion of new first mortgage bonds under the most restrictive issuance test in the mortgage. Any issuances are subject to market conditions and amounts may be further limited by regulatory authorizations or commitments or by covenants and tests contained in other financing agreements. PacifiCorp also has the ability to release property from the lien of the mortgage on the basis of property additions, bond credits or deposits of cash.

    Credit Facilities

In 2020, PacifiCorp's credit facility support for outstanding variable rate tax-exempt bond obligations decreased by $38 million due to maturities.

In 2019, PacifiCorp completed a re-offering of variable rate tax-exempt bond obligations totaling $168 million, involving the cancellation, at PacifiCorp's request, of $170 million of letters of credit support by the issuing banks. As a result, PacifiCorp's credit facility support for outstanding variable rate tax-exempt bond obligations increased by $168 million.

    Debt Authorizations

PacifiCorp currently has regulatory authority from the OPUC and the IPUC to issue an additional $3 billion of long-term debt. PacifiCorp must make a notice filing with the WUTC prior to any future issuance. PacifiCorp currently has an effective shelf registration statement with the SEC to issue an indeterminate amount of first mortgage bonds through September 2023.

Preferred Stock

As of December 31, 2020 and 2019, PacifiCorp had non-redeemable preferred stock outstanding with an aggregate stated value of $2 million.

    Common Shareholder's Equity

In 2020 and 2019, PacifiCorp declared and paid dividends of $— million and $175 million, respectively, to PPW Holdings LLC.

    Capitalization

PacifiCorp manages its capitalization and liquidity position to maintain a prudent capital structure with an objective of retaining strong investment grade credit ratings, which is expected to facilitate continuing access to flexible borrowing arrangements at favorable costs and rates. This objective, subject to periodic review and revision, attempts to balance the interests of all shareholders, customers and creditors and provide a competitive cost of capital and predictable capital market access.

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Under existing or prospective authoritative accounting guidance, such as guidance pertaining to consolidations and leases, it is possible that new purchase power and gas agreements, transmission arrangements or amendments to existing arrangements may be accounted for as lease obligations on PacifiCorp's financial statements. While PacifiCorp has successfully amended covenants in financing arrangements that may be impacted, it may be more difficult for PacifiCorp to comply with its capitalization targets or regulatory commitments concerning minimum levels of common equity as a percentage of capitalization. This may lead PacifiCorp to seek amendments or waivers under financing agreements and from regulators, delay or reduce dividends or spending programs, seek additional new equity contributions from its indirect parent company, BHE, or take other actions.

Future Uses of Cash

PacifiCorp has available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, capital contributions and other sources. These sources are expected to provide funds required for current operations, capital expenditures, debt retirements and other capital requirements. The availability and terms under which PacifiCorp has access to external financing depends on a variety of factors, including PacifiCorp's credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry.

Capital Expenditures

PacifiCorp has significant future capital requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital.

Historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ended December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
Wind generation$352 $933 $1,277 $101 $40 $632 
Electric distribution404 413 613 537 428 374 
Electric transmission230 612 405 461 961 1,173 
Other271 217 245 618 482 371 
Total$1,257 $2,175 $2,540 $1,717 $1,911 $2,550 

PacifiCorp's 2019 IRP identified a significant increase in renewable resource generation and associated transmission. PacifiCorp has included an estimate of the 2019 IRP resources in its forecast capital expenditures for 2021 through 2023. These estimates are likely to change as a result of the RFP process. PacifiCorp's historical and forecast capital expenditures include the following:

Wind generation includes both growth projects and operating expenditures. Growth projects include:
Construction of wind-powered generating facilities at PacifiCorp totaled $1,148 million for 2020 and $338 million for 2019 and includes 674 MWs of new wind-powered generating facilities that were placed in-service in 2020 and 516 MWs expected to be placed in-service in 2021. The energy production for these new facilities is expected to qualify for 100% of the federal PTCs available for ten years once the equipment is placed in-service. PacifiCorp's 2019 IRP identified 1,920 MWs of new wind-powered generating resources that are expected to come online in 2024. PacifiCorp anticipates that the additional new wind-powered generation will be a mixture of owned and contracted resources. Planned spending for the wind-powered generating facilities totals $43 million in 2021 and $533 million in 2023.
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Repowering existing wind-powered generating facilities at PacifiCorp totaled $125 million in 2020 and $585 million in 2019. Certain repowering projects were placed in-service in 2019 and 2020 with the remaining repowering projects expected to be placed in-service in 2021. The energy production from such repowered facilities is expected to qualify for 100% of the federal renewable electricity PTCs available for ten years following each facility's return to service. Planned spending for certain existing and new wind-powered generating facilities totals $42 million in 2021, $19 million in 2022 and $64 million in 2023.
Electric distribution includes both growth projects and operating expenditures. Operating expenditures includes planned spend on wildfire mitigation, wildfire damage restoration and storm damage repairs. Expenditures for these items totaled $187 million in 2020, and planned spending totals $156 million in 2021, $115 million in 2022 and $108 million in 2023. Remaining investments relate to expenditures for new connections and distribution.
Electric transmission includes both growth projects and operating expenditures. Transmission investment through 2020 primarily reflects costs for the 140-mile 500-kV Aeolus-Bridger/Anticline transmission line, a major segment of PacifiCorp's Energy Gateway Transmission expansion program, placed in-service in November 2020. Transmission system investment going forward primarily reflects investment in additional Energy Gateway Transmission segments expected to be placed in-service. Planned spending for the additional Energy Gateway Transmission segments totals $177 million in 2021, $674 million in 2022, and $873 million in 2023.
Other includes both growth projects and operating expenditures. Expenditures for information technology totaled $75 million in 2020, and planned spending totals $140 million in 2021, $151 million in 2022 and $129 million in 2023. Remaining investments relate to operating projects that consist of routine expenditures for generation and other infrastructure needed to serve existing and expected demand.
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Contractual Obligations

PacifiCorp has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes PacifiCorp's material contractual cash obligations as of December 31, 2020 (in millions):
Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
Long-term debt, including interest:
Fixed-rate obligations$814 $1,785 $1,330 $10,556 $14,485 
Variable-rate obligations(1)
— — 218 — 218 
Short-term debt, including interest93 — — — 93 
Operating and finance lease liabilities12 28 
Interest payments on operating and finance lease liabilities15 
Easements14 27 26 278 345 
Asset retirement obligations13 15 30 442 500 
Power purchase agreements - commercially operable(2):
Electricity commodity contracts179 307 270 1,298 2,054 
Electricity capacity contracts30 61 67 617 775 
Electricity mixed contracts14 28 27 113 182 
Power purchase agreements - non-commercially operable(2)
25 50 54 456 585 
Transmission104 187 123 409 823 
Fuel purchase agreements(2):
Natural gas supply and transportation97 56 53 173 379 
Coal supply and transportation539 738 404 438 2,119 
Other purchase obligations190 109 71 214 584 
Other long-term liabilities(3)
26 14 14 55 109 
Total contractual cash obligations$2,148 $3,386 $2,693 $15,067 $23,294 

(1)Consists of principal and interest for tax-exempt bond obligations with interest rates scheduled to reset periodically prior to maturity. Future variable interest rates are assumed to equal December 31, 2020 rates. Refer to "Interest Rate Risk" in Item 7A of this Form 10-K for additional discussion related to variable-rate liabilities.
(2)Commodity contracts are agreements for the delivery of energy. Capacity contracts are agreements that provide rights to energy output, generally of a specified generating facility. Forecasted or other applicable estimated prices were used to determine total dollar value of the commitments. PacifiCorp has several contracts for purchases of electricity from facilities that have not yet achieved commercial operation. To the extent any of these facilities do not achieve commercial operation, PacifiCorp has no obligation to the counterparty.
(3)Includes environmental and hydroelectric relicensing commitments recorded in the Consolidated Balance Sheets that are contractually or legally binding. Excludes regulatory liabilities and employee benefit plan obligations that are not legally or contractually fixed as to timing and amount. Deferred income taxes are excluded since cash payments are based primarily on taxable income for each year. Uncertain tax positions are also excluded because the amounts and timing of cash payments are not certain.

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COVID-19

In March 2020, COVID‑19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by PacifiCorp. While COVID-19 has impacted PacifiCorp's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. The states in which PacifiCorp operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by PacifiCorp related to customer collection activity and suspension of disconnections for non-payment, PacifiCorp has seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for the deferral or recovery of certain costs incurred in responding to COVID‑19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion.

PacifiCorp's business has been deemed essential and its employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain its electric generation, transmission and distribution system. In response to the effects of COVID‑19, PacifiCorp has implemented its business continuity plan to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID‑19.

Regulatory Matters

PacifiCorp is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further information regarding PacifiCorp's general regulatory framework and current regulatory matters.

Environmental Laws and Regulations

PacifiCorp is subject to federal, state and local laws and regulations regarding climate change, wildfire prevention and mitigation, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. PacifiCorp believes it is in material compliance with all applicable laws and regulations, although many are subject to interpretation that may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and PacifiCorp is unable to predict the impact of the changing laws and regulations on its operations and financial results.

Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations.

Collateral and Contingent Features

Debt and preferred securities of PacifiCorp are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of PacifiCorp's ability to, in general, meet the obligations of its issued debt or preferred securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time. As of December 31, 2020, PacifiCorp's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt from the recognized credit rating agencies were investment grade.

PacifiCorp has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt and a change in ratings is not an event of default under the applicable debt instruments. PacifiCorp's unsecured revolving credit facilities do not require the maintenance of a defaultminimum credit rating level to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.
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Certain authorizations or exemptions by regulatory commissions for the issuance of securities are valid as long as PacifiCorp maintains investment grade ratings on senior secured debt. A downgrade below that level would necessitate new regulatory applications and approvals.

In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance" if there is a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2020, PacifiCorp would have been required to post $161 million of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. Refer to Note 12 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for a discussion of PacifiCorp's collateral requirements specific to PacifiCorp's derivative contracts.

Inflation

Historically, overall inflation and changing prices in the economies where PacifiCorp operates have not had a significant impact on PacifiCorp's consolidated financial results. PacifiCorp operates under a cost-of-service based rate structure administered by various state commissions and the FERC. Under this rate structure, PacifiCorp is allowed to include prudent costs in its rates, including the impact of inflation. PacifiCorp attempts to minimize the potential impact of inflation on its operations through the use of energy and other cost adjustment clauses and tariff riders, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.

Off-Balance Sheet Arrangements

PacifiCorp from time to time enters into arrangements in the normal course of business to facilitate commercial transactions with third parties that involve guarantees or similar arrangements. PacifiCorp currently has indemnification obligations in connection with the sale or transfer of certain assets. In addition, PacifiCorp evaluates potential obligations that arise out of variable interests in unconsolidated entities, determined in accordance with authoritative accounting guidance. PacifiCorp believes that the likelihood that it would be required to perform or otherwise incur any significant losses associated with any of these obligations is remote. Refer to Notes 11 and 19 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for more information on these obligations and arrangements.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the other joint participants, PacifiCorp may be obligatedfuture. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to absorb, directly orvarying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by paying additional sums toPacifiCorp's methods, judgments and assumptions used in the entity, a proportionate sharepreparation of the defaulting party's liability.Consolidated Financial Statements and should be read in conjunction with PacifiCorp's estimated shareSummary of Significant Accounting Policies included in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

PacifiCorp prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, PacifiCorp defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in rates occur.

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PacifiCorp continually evaluates the applicability of the decommissioningguidance for regulated operations and reclamation obligationswhether its regulatory assets and liabilities are primarily recordedprobable of inclusion in future rates by considering factors such as AROa change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit PacifiCorp's ability to recover its costs. PacifiCorp believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as AOCI. Total regulatory assets were $1.4 billion and total regulatory liabilities were $2.8 billion as of December 31, 2020. Refer to Note 6 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's regulatory assets and liabilities.



(11)Risk Management and Hedging ActivitiesDerivatives


PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. PacifiCorp does not engage in a material amount of proprietary trading activities.


PacifiCorp has established a risk management process that is designed to identify, assess, manage mitigate, monitor and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. No interest rate derivatives were in place during the periods presented. PacifiCorp does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices. As of December 31, 2020, PacifiCorp had no derivative contracts outstanding related to interest rate risk. Refer to Notes 12 and 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's derivative contracts.


There have been no significantMeasurement Principles

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by accounting principles generally accepted in the United States of America. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first three years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. As of December 31, 2020, PacifiCorp had a net derivative liability of $17 million related to contracts valued using either quoted prices or forward price curves based upon observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first three years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The assumptions used in these models are critical because any changes in PacifiCorp's accounting policiesassumptions could have a significant impact on the estimated fair value of the contracts. As of December 31, 2020, PacifiCorp had a net derivative asset of $— million related to derivatives.contracts where PacifiCorp uses internal models with significant unobservable inputs.

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Classification and Recognition Methodology

PacifiCorp's derivative contracts are probable of inclusion in rates and changes in the estimated fair value of derivative contracts are generally recorded as regulatory assets. Accordingly, amounts are generally not recognized in earnings until the contracts are settled and the forecasted transaction has occurred. As of December 31, 2020, PacifiCorp had $17 million recorded as a regulatory asset related to derivative contracts on the Consolidated Balance Sheets.

Pension and Other Postretirement Benefits

PacifiCorp sponsors defined benefit pension and other postretirement benefit plans as described in Note 10. PacifiCorp recognizes the funded status of these defined benefit pension and other postretirement benefit plans on the Consolidated Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2020, PacifiCorp recognized a net liability totaling $118 million for the funded status of its defined benefit pension and other postretirement benefit plans. As of December 31, 2020, amounts not yet recognized as a component of net periodic benefit cost that were included in net regulatory assets and accumulated other comprehensive loss totaled $422 million and $25 million, respectively.

The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rate and expected long-term rate of return on plan assets. These key assumptions are reviewed annually and modified as appropriate. PacifiCorp believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 10 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for disclosures about PacifiCorp's defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2020.

PacifiCorp chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.

In establishing its assumption as to the expected long-term rate of return on plan assets, PacifiCorp evaluates the investment allocation between return-seeking investment and fixed income securities based on the funded status of the plan and utilizes the asset allocation and return assumptions for each asset class based on forward-looking views of the financial markets and historical performance. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. PacifiCorp regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.

The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Consolidated Financial Statements would be as follows (in millions):
Other Postretirement
Pension PlansBenefit Plan
+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020 Benefit Obligations:
Discount rate$(63)$69 $(15)$17 
Effect on 2020 Periodic Cost:
Discount rate$— $— $$(1)
Expected rate of return on plan assets(5)(2)

A variety of factors affect the funded status of the plans, including asset returns, discount rates, mortality assumptions, plan changes and PacifiCorp's funding policy for each plan.

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Income Taxes

In determining PacifiCorp's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by PacifiCorp's various regulatory commissions. PacifiCorp's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. PacifiCorp recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of PacifiCorp's federal, state and local income tax examinations is uncertain, PacifiCorp believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on PacifiCorp's consolidated financial results. PacifiCorp's unrecognized tax benefits are primarily included in other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Note 9 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's income taxes.

It is probable that PacifiCorp will pass income tax benefits and expense related to the federal tax rate change from 35% to 21% as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to their customers in certain state jurisdictions. As of December 31, 2020, these amounts were recognized as a net regulatory liability of $1.5 billion and will be included in regulated rates when the temporary differences reverse.

Revenue Recognition - Unbilled Revenue

Revenue is recognized as electricity is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $254 million as of December 31, 2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Estimates are reversed in the following month and actual revenue is recorded based on subsequent meter readings.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

PacifiCorp's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. PacifiCorp's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which PacifiCorp transacts. The following discussion addresses the significant market risks associated with PacifiCorp's business activities. PacifiCorp has established guidelines for credit risk management. Refer to Notes 2 and 12 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information on derivative contracts.regarding PacifiCorp's contracts accounted for as derivatives.


PacifiCorp has a risk management committee that is responsible for the oversight of market and credit risk relating to the commodity transactions of PacifiCorp. To limit PacifiCorp's exposure to market and credit risk, the risk management committee recommends, and executive management establishes, policies, limits and approved products, which are reviewed frequently to respond to changing market conditions.

Risk is an inherent part of PacifiCorp's business and activities. PacifiCorp has established a risk management process that is designed to identify, manage and report each of the various types of risk involved in PacifiCorp's business. The following table, which reflects master netting arrangementsrisk management policy governs energy transactions and excludesis designed for hedging PacifiCorp's existing energy and asset exposures, and to a limited extent, the policy permits arbitrage and trading activities to take advantage of market inefficiencies. The policy also governs the types of transactions authorized for use and establishes guidelines for credit risk management and management information systems required to effectively monitor such transactions. PacifiCorp's risk management policy provides for the use of only those contracts that have been designateda similar volume or price relationship to its portfolio of assets, liabilities or anticipated transactions.


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Commodity Price Risk

PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as normal underPacifiCorp has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. PacifiCorp does not engage in a material amount of proprietary trading activities. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. PacifiCorp's exposure to commodity price risk is generally limited by its ability to include commodity costs in rates, which is subject to regulatory lag that occurs between the time the costs are incurred and when the costs are included in rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.

PacifiCorp measures the market risk in its electricity and natural gas portfolio daily, utilizing a historical Value-at-Risk ("VaR") approach and other measurements of net position. PacifiCorp also monitors its portfolio exposure to market risk in comparison to established thresholds and measures its open positions subject to price risk in terms of quantity at each delivery location for each forward time period. VaR computations for the electricity and natural gas commodity portfolio are based on a historical simulation technique, utilizing historical price changes over a specified (holding) period to simulate potential forward energy market price curve movements to estimate the potential unfavorable impact of such price changes on the portfolio positions. The quantification of market risk using VaR provides a consistent measure of risk across PacifiCorp's continually changing portfolio. VaR represents an estimate of possible changes at a given level of confidence in fair value that would be measured on its portfolio assuming hypothetical movements in forward market prices and is not necessarily indicative of actual results that may occur.

PacifiCorp's VaR computations utilize several key assumptions. The calculation includes short-term commodity contracts, the expected resource and demand obligations from PacifiCorp's long-term contracts, the expected generation levels from PacifiCorp's generation assets and the expected retail and wholesale load levels. The portfolio reflects flexibility contained in contracts and assets, which accommodate the normal purchasesvariability in PacifiCorp's demand obligations and generation availability. These contracts and assets are valued to reflect the variability PacifiCorp experiences as a load-serving entity. Contracts or normal sales exception afforded by GAAP, summarizesassets that contain flexible elements are often referred to as having embedded options or option characteristics. These options provide for energy volume changes that are sensitive to market price changes. Therefore, changes in the option values affect the energy position of the portfolio with respect to market prices, and this effect is calculated daily. When measuring portfolio exposure through VaR, these position changes that result from the option sensitivity are held constant through the historical simulation. PacifiCorp's VaR methodology is based on a 36-month forward position, 95% confidence interval and one-day holding period.

As of December 31, 2020, PacifiCorp's estimated potential one-day unfavorable impact on fair value of PacifiCorp's derivative contracts, on a gross basis,the electricity and reconciles those amounts tonatural gas commodity portfolio over the amounts presented on a net basis onnext 36 months was $14 million, as measured by the Consolidated Balance Sheets (in millions):

 Other   Other Other  
 Current Other Current Long-term  
 Assets Assets Liabilities Liabilities Total
          
As of December 31, 2017:         
Not designated as hedging contracts(1):
         
Commodity assets$11
 $1
 $1
 $
 $13
Commodity liabilities(3) 
 (32) (82) (117)
Total8
 1
 (31) (82) (104)
          
Total derivatives8
 1
 (31) (82) (104)
Cash collateral receivable
 
 17
 57
 74
Total derivatives - net basis$8
 $1
 $(14) $(25) $(30)
          
As of December 31, 2016:         
Not designated as hedging contracts(1):
         
Commodity assets$24
 $2
 $1
 $
 $27
Commodity liabilities(6) 
 (14) (84) (104)
Total18
 2
 (13) (84) (77)
          
Total derivatives18
 2
 (13) (84) (77)
Cash collateral receivable
 
 10
 59
 69
Total derivatives - net basis$18
 $2
 $(3) $(25) $(8)

(1)PacifiCorp's commodity derivatives are generally included in rates and as of December 31, 2017 and 2016, a regulatory asset of $101 million and $73 million, respectively, was recorded related to the net derivative liability of $104 million and $77 million, respectively.

VaR computations described above. The following table reconciles the beginningminimum, average and ending balances of PacifiCorp's regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in regulatory assets,maximum daily VaR (one-day holding periods) were as well as amounts reclassified to earningsfollows for the yearsyear ended December 31 (in millions):
2020
Minimum VaR (measured)$
Average VaR (calculated)10 
Maximum VaR (measured)19 

PacifiCorp maintained compliance with its VaR limit procedures during the year ended December 31, 2020. Changes in markets inconsistent with historical trends or assumptions used could cause actual results to exceed estimated VaR levels.


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 2017 2016 2015
      
Beginning balance$73
 $133
 $85
Changes in fair value recognized in regulatory assets47
 (27) 82
Net gains reclassified to operating revenue9
 10
 40
Net losses reclassified to energy costs(28) (43) (74)
Ending balance$101
 $73
 $133
Fair Value of Derivatives

Derivative Contract Volumes


The following table that follows summarizes the net notional amountsPacifiCorp's price risk on commodity contracts accounted for as derivatives, excluding collateral netting of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values$24 million and $47 million as of December 31, (in2020 and 2019, respectively, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices by the expected volumes for these contracts as of that date. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions):
Fair Value -Estimated Fair Value after
 Net AssetHypothetical Change in Price
(Liability)10% increase10% decrease
As of December 31, 2020:
Total commodity derivative contracts$(17)$$(39)
As of December 31, 2019
Total commodity derivative contracts$(63)$(44)$(82)

PacifiCorp's commodity derivative contracts are generally recoverable from customers in rates; therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose PacifiCorp to earnings volatility. As of December 31, 2020 and 2019, a regulatory asset of $17 million and $62 million, respectively, was recorded related to the net derivative liability of $17 million and $63 million, respectively. Consolidated financial results would be negatively impacted if the costs of wholesale electricity, natural gas or fuel are higher or the level of wholesale electricity sales are lower than what is included in rates, including the impacts of adjustment mechanisms.

Interest Rate Risk

PacifiCorp is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, PacifiCorp's fixed-rate long-term debt does not expose PacifiCorp to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if PacifiCorp were to reacquire all or a portion of these instruments prior to their maturity. PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. The nature and amount of PacifiCorp's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 7, 8 and 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of PacifiCorp's short- and long-term debt.

As of December 31, 2020 and 2019, PacifiCorp had short- and long-term variable-rate obligations totaling $310 million and $385 million, respectively that expose PacifiCorp to the risk of increased interest expense in the event of increases in short-term interest rates. The market risk related to PacifiCorp's variable-rate debt as of December 31, 2020 is not hedged. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on PacifiCorp's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 2020 and 2019.


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 Unit of    
 Measure 2017 2016
      
Electricity (sales)Megawatt hours (9) (3)
Natural gas purchasesDecatherms 113
 84
Fuel oil purchasesGallons 
 11


Credit Risk


PacifiCorp is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent PacifiCorp's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, PacifiCorp analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, PacifiCorp enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, PacifiCorp exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.


Collateral and Contingent Features

In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance" in the event of a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017,2020, PacifiCorp's aggregate credit ratingsexposure with wholesale energy supply and marketing counterparties included counterparties having non-investment grade, internally rated credit ratings. Substantially all of these non-investment grade, internally rated counterparties are associated with long-duration solar and wind power purchase agreements from facilities that have not yet achieved commercial operation and for which PacifiCorp has no obligation should the facilities not achieve commercial operation.

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Item 8.Financial Statements and Supplementary Data

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of PacifiCorp
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of PacifiCorp and subsidiaries ("PacifiCorp") as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, changes in shareholders' equity, and cash flows for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of PacifiCorp as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of PacifiCorp's management. Our responsibility is to express an opinion on PacifiCorp's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to PacifiCorp in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. PacifiCorp is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of PacifiCorp's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the three recognized credit rating agenciescurrent-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Regulatory Matters - Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 6 to the financial statements

Critical Audit Matter Description

PacifiCorp is subject to rate regulation by state public service commissions as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to rates in the respective service territories where PacifiCorp operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense; and income tax expense (benefit).
216


Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow PacifiCorp an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, grade.and the timing and amount of assets to be recovered by rates. While PacifiCorp has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit PacifiCorp's ability to recover its costs.


The aggregate fair valueWe identified the impact of PacifiCorp's derivative contractsrate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated PacifiCorp's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability positionsbalances for completeness.
For regulatory matters in process, we inspected PacifiCorp's filings with specific credit-risk-related contingent features totaled $110 millionthe Commissions and $97the filings with the Commissions by intervenors that may impact PacifiCorp's future rates, for any evidence that might contradict management's assertions.

We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

California and Oregon 2020 Wildfires – Contingencies – See Note 14 to the financial statements

Critical Audit Matter Description

PacifiCorp has loss contingencies related to the California and Oregon 2020 wildfires (the "2020 wildfires"). PacifiCorp has recorded estimated liabilities, net of expected insurance recoveries, of $136 million as of December 31, 20172020, which represents its best estimate of probable losses, net of expected insurance recoveries, as a result of the 2020 wildfires.

We identified wildfire-related contingencies and 2016, respectively, for which PacifiCorp had posted collateral of $74 million and $69 million, respectively, in the form of cash deposits. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggeredrelated disclosure as of December 31, 2017 and 2016, PacifiCorp would have been required to post $34 million and $22 million, respectively, of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation or other factors.


(12)
Fair Value Measurements

The carrying value of PacifiCorp's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair valuea critical audit matter because of the short-term maturitysignificant judgments made by management to estimate the losses. This required the application of a high degree of judgment and extensive effort when performing audit procedures to evaluate the reasonableness of management's estimate of the losses and disclosure related to wildfire-related loss contingencies.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's judgments regarding its estimate of losses for wildfire-related contingencies and the related disclosure included the following, among others:
We evaluated management's judgments related to whether a loss was probable and reasonably estimable, reasonably possible, or remote for each individual wildfire by inquiring of management and PacifiCorp's external and internal legal counsel regarding the amounts of probable and reasonably estimable, reasonably possible, and remote losses, including the potential impact of information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire, and external information for any evidence that might contradict management's assertions.
We evaluated the estimation methodology for determining the amount of probable loss through inquiries with management and its external and internal legal counsel.
217


We tested the significant assumptions used in determining the estimate, including, but not limited to, information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire.
We read legal letters from PacifiCorp's external and internal legal counsel regarding information regarding ongoing litigation related to the 2020 wildfires and evaluated whether the information therein was consistent with the information obtained in our procedures.
We evaluated whether PacifiCorp's disclosures were appropriate and consistent with the information obtained in our procedures.

/s/ Deloitte & Touche LLP

Portland, Oregon
February 26, 2021

We have served as PacifiCorp's auditor since 2006.

218


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$13 $30 
Trade receivables, net703 644 
Other receivables, net48 70 
Inventories482 394 
Regulatory assets116 63 
Prepaid expenses79 61 
Other current assets82 28 
Total current assets1,523 1,290 
Property, plant and equipment, net22,430 20,973 
Regulatory assets1,279 1,060 
Other assets470 374 
Total assets$25,702 $23,697 

The accompanying notes are an integral part of these instruments. consolidated financial statements.


219



PACIFICORP AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)
As of December 31,
20202019
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
Accounts payable$772 $679 
Accrued interest127 116 
Accrued property, income and other taxes80 96 
Accrued employee expenses84 75 
Short-term debt93 130 
Current portion of long-term debt420 38 
Regulatory liabilities115 56 
Other current liabilities174 170 
Total current liabilities1,865 1,360 
Long-term debt8,192 7,620 
Regulatory liabilities2,727 2,913 
Deferred income taxes2,627 2,563 
Other long-term liabilities1,118 804 
Total liabilities16,529 15,260 
Commitments and contingencies (Note 14)00
Shareholders' equity:
Preferred stock
Common stock - 750 shares authorized, 0 par value, 357 shares issued and outstanding
Additional paid-in capital4,479 4,479 
Retained earnings4,711 3,972 
Accumulated other comprehensive loss, net(19)(16)
Total shareholders' equity9,173 8,437 
Total liabilities and shareholders' equity$25,702 $23,697 

The accompanying notes are an integral part of these consolidated financial statements.

220


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)
Years Ended December 31,
202020192018
Operating revenue$5,341 $5,068 $5,026 
Operating expenses:
Cost of fuel and energy1,790 1,795 1,757 
Operations and maintenance1,209 1,048 1,038 
Depreciation and amortization1,209 954 979 
Property and other taxes209 199 201 
Total operating expenses4,417 3,996 3,975 
Operating income924 1,072 1,051 
Other income (expense):
Interest expense(426)(401)(384)
Allowance for borrowed funds48 36 18 
Allowance for equity funds98 72 35 
Interest and dividend income10 21 15 
Other, net10 32 
Total other expense(260)(240)(308)
Income before income tax expense664 832 743 
Income tax (benefit) expense(75)61 
Net income$739 $771 $738 

The accompanying notes are an integral part of these consolidated financial statements.

221


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)
Years Ended December 31,
202020192018
Net income$739 $771 $738 
Other comprehensive (loss) income, net of tax —
Unrecognized amounts on retirement benefits, net of tax of $(1), $(1) and $1(3)(3)
Comprehensive income$736 $768 $740 

The accompanying notes are an integral part of these consolidated financial statements.

222


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
(Amounts in millions)
Accumulated
AdditionalOtherTotal
PreferredCommonPaid-inRetainedComprehensiveShareholders'
StockStockCapitalEarningsLoss, NetEquity
Balance, December 31, 2017$$$4,479 $3,089 $(15)$7,555 
Net income— — 738 738 
Other comprehensive income— — 
Common stock dividends declared— — (450)(450)
Balance, December 31, 20184,479 3,377 (13)7,845 
Net income— — 771 771 
Other comprehensive loss— — (1)(3)(4)
Common stock dividends declared— — (175)(175)
Balance, December 31, 20194,479 3,972 (16)8,437 
Net income— — 739 739 
Other comprehensive loss— — (3)(3)
Balance, December 31, 2020$$$4,479 $4,711 $(19)$9,173 

The accompanying notes are an integral part of these consolidated financial statements.

223


PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$739 $771 $738 
Adjustments to reconcile net income to net cash flows from operating
activities:
Depreciation and amortization1,209 954 979 
Allowance for equity funds(98)(72)(35)
Changes in regulatory assets and liabilities(229)(55)87 
Deferred income taxes and amortization of investment tax credits(124)(131)(199)
Other, net20 
Changes in other operating assets and liabilities:
Trade receivables, other receivables and other assets(154)26 31 
Inventories(88)23 16 
Prepaid expenses(15)(12)31 
Derivative collateral, net23 12 15 
Accrued property, income and other taxes, net(53)22 60 
Accounts payable and other liabilities372 (11)83 
Net cash flows from operating activities1,583 1,547 1,811 
Cash flows from investing activities:
Capital expenditures(2,540)(2,175)(1,257)
Other, net30 11 
Net cash flows from investing activities(2,510)(2,164)(1,252)
Cash flows from financing activities:
Proceeds from long-term debt987 989 593 
Repayments of long-term debt(38)(350)(586)
(Repayments of) net proceeds from short-term debt(37)100 (50)
Dividends paid(175)(450)
Other, net(2)(3)(3)
Net cash flows from financing activities910 561 (496)
Net change in cash and cash equivalents and restricted cash and cash equivalents(17)(56)63 
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period36 92 29 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$19 $36 $92 

The accompanying notes are an integral part of these consolidated financial statements.

224


PACIFICORP AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)Organization and Operations

PacifiCorp, which includes PacifiCorp and its subsidiaries, is a United States regulated electric utility company serving retail customers, including residential, commercial, industrial, irrigation and other customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp owns, or has variousinterests in, a number of thermal, hydroelectric, wind-powered and geothermal generating facilities, as well as electric transmission and distribution assets. PacifiCorp also buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants. PacifiCorp is subject to comprehensive state and federal regulation. PacifiCorp's subsidiaries support its electric utility operations by providing coal mining services. PacifiCorp is an indirect subsidiary of Berkshire Hathaway Energy Company ("BHE"), a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").

(2)Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of PacifiCorp and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for loss contingencies, including those related to the Oregon and Northern California 2020 wildfires (the "2020 Wildfires") described in Note 14. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

PacifiCorp prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, PacifiCorp defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future rates. Regulatory assets and liabilities are measuredestablished to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in rates occur.

PacifiCorp continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit PacifiCorp's ability to recover its costs. PacifiCorp believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").

225


Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Cash Equivalents and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds representing escrow accounts for disputes, vendor retention, custodial and nuclear decommissioning funds. Restricted amounts are included in other current assets and other assets on the Consolidated Balance Sheets.

Investments

Available-for-sale securities are carried at fair value with realized gains and losses, as determined on the Consolidated Financial Statements using inputs from the three levelsa specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of thetax. As of December 31, 2020 and 2019, PacifiCorp had 0 unrealized gains and losses on available-for-sale securities. Trading securities are carried at fair value hierarchy. A financial asset or liability classification withinwith realized and unrealized gains and losses recognized in earnings.

    Equity Method Investments

PacifiCorp utilizes the hierarchy is determined based on the lowest level input that is significantequity method of accounting with respect to the fair value measurement. The three levels are as follows:

Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that PacifiCorp hasinvestments when it possesses the ability to accessexercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when an investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, PacifiCorp records the investment at cost and subsequently increases or decreases the carrying value of the investment by PacifiCorp's proportionate share of the net earnings or losses and other comprehensive income (loss) ("OCI") of the investee. PacifiCorp records dividends or other equity distributions as reductions in the carrying value of the investment.

Allowance for Credit Losses

Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination, and are stated at the measurement date.

Level 2 - Inputs include quoted pricesoutstanding principal amount, net of an estimated allowance for similar assets or liabilities in active markets, quoted pricescredit losses. The allowance for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3 - Unobservable inputs reflect PacifiCorp's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. PacifiCorp develops these inputscredit losses is based on PacifiCorp's assessment of the best information available, includingcollectability of amounts owed to PacifiCorp by its own data.

customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, PacifiCorp primarily utilizes credit loss history. However, PacifiCorp may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. The following table presents PacifiCorp's assets and liabilities recognizedchange in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, and measured at fair value on a recurring basisis summarized as follows for the years ended December 31 (in millions):

202020192018
Beginning balance$$$10 
Charged to operating costs and expenses, net18 13 12 
Write-offs, net(9)(13)(14)
Ending balance$17 $$


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 Input Levels for Fair Value Measurements    
 Level 1 Level 2 Level 3 
Other(1)
 Total
As of December 31, 2017:         
Assets:         
Commodity derivatives$
 $13
 $
 $(4) $9
Money market mutual funds(2)
21
 
 
 
 21
Investment funds21
 
 
 
 21
 $42
 $13
 $
 $(4) $51
          
Liabilities - Commodity derivatives$
 $(117) $
 $78
 $(39)
          
As of December 31, 2016:         
Assets:         
Commodity derivatives$
 $27
 $
 $(7) $20
Money market mutual funds (2)
13
 
 
 
 13
Investment funds17
 
 
 
 17
 $30
 $27
 $
 $(7) $50
          
Liabilities - Commodity derivatives$
 $(104) $
 $76
 $(28)
Derivatives

(1)Represents netting under master netting arrangements and a net cash collateral receivable of $74 million and $69 million as of December 31, 2017 and 2016, respectively.
(2)Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.


PacifiCorp employs a number of different derivative contracts, which may include forwards, options, swaps and other agreements, to manage price risk for electricity, natural gas and other commodities and interest rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements.

Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or energy costs on the Consolidated Statements of Operations.

For PacifiCorp's derivative contracts, the settled amount is generally included in rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in rates are recorded as regulatory liabilities or assets. For a derivative contract not probable of inclusion in rates, changes in the fair value are recognized in earnings.

Inventories

Inventories consist mainly of materials, supplies and fuel stocks and are stated at the lower of average cost or net realizable value.

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. PacifiCorp capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs, which include debt and equity allowance for funds used during construction ("AFUDC"). The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed.

Depreciation and amortization are generally computed on the straight-line method based on composite asset class lives prescribed by PacifiCorp's various regulatory authorities or over the assets' estimated useful lives. Depreciation studies are completed periodically to determine the appropriate composite asset class lives, net salvage and depreciation rates. These studies are reviewed and rates are ultimately approved by the various regulatory authorities. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.

Generally when PacifiCorp retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.

Debt and equity AFUDC, which represents the estimated costs of debt and equity funds necessary to finance the construction of property, plant and equipment, is capitalized as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC"). After construction is completed, PacifiCorp is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.

227


Asset Retirement Obligations

PacifiCorp recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. PacifiCorp's AROs are primarily associated with its generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.

Impairment

PacifiCorp evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment supports PacifiCorp's regulated businesses the impacts of regulation are considered when evaluating the carrying value of regulated assets.

Leases

PacifiCorp has non-cancelable operating leases primarily for land, office space, office equipment, and generating facilities and finance leases consisting primarily of office buildings, natural gas pipeline facilities, and generating facilities. These leases generally require PacifiCorp to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. PacifiCorp does not include options in its lease calculations unless there is a triggering event indicating PacifiCorp is reasonably certain to exercise the option. PacifiCorp's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Right-of-use assets will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

PacifiCorp's leases of generating facilities generally are in the form of long-term purchases of electricity, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

PacifiCorp's operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Revenue Recognition

PacifiCorp uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which PacifiCorp expects to be entitled in exchange for those goods or services. PacifiCorp records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.

Substantially all of PacifiCorp's Customer Revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission and distribution and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. Other revenue consists primarily of revenue recognized in accordance with ASC 815, "Derivatives and Hedging."
228


Revenue recognized is equal to what PacifiCorp has the right to invoice as it corresponds directly with the value to the customer of PacifiCorp's performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $254 million and $245 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

Unamortized Debt Premiums, Discounts and Debt Issuance Costs

Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.

Income Taxes

Berkshire Hathaway includes PacifiCorp in its consolidated United States federal income tax return. Consistent with established regulatory practice, PacifiCorp's provision for income taxes has been computed on a stand-alone basis.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using enacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of OCI are charged or credited directly to OCI. Changes in deferred income tax assets and liabilities that are associated with certain property-related basis differences and other various differences that PacifiCorp deems probable to be passed on to its customers in most state jurisdictions are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse or as otherwise approved by PacifiCorp's various regulatory commissions. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized.

Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory commissions. Investment tax credits are included in other long-term liabilities on the Consolidated Balance Sheets and were $12 million and $11 million as of December 31, 2020 and 2019, respectively.

In determining PacifiCorp's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by PacifiCorp's various regulatory commissions. PacifiCorp's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. PacifiCorp recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of PacifiCorp's federal, state and local income tax examinations is uncertain, PacifiCorp believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on PacifiCorp's consolidated financial results. PacifiCorp's unrecognized tax benefits are primarily included in other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

Segment Information

PacifiCorp currently has one segment, which includes its regulated electric utility operations.


229


(3)Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20202019
Utility Plant:
Generation14 - 67 years$12,861 $12,509 
Transmission58 - 75 years7,632 6,482 
Distribution20 - 70 years7,660 7,307 
Intangible plant(1)
5 - 75 years1,054 1,016 
Other5 - 60 years1,510 1,449 
Utility plant in service30,717 28,763 
Accumulated depreciation and amortization(9,838)(9,803)
Utility plant in service, net20,879 18,960 
Other non-regulated, net of accumulated depreciation and amortization14 - 95 years10 
Plant, net20,888 18,970 
Construction work-in-progress1,542 2,003 
Property, plant and equipment, net$22,430 $20,973 

(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

The average depreciation and amortization rate applied to depreciable property, plant and equipment was 4.1%, 3.3% and 3.5% for the years ended December 31, 2020, 2019 and 2018, respectively, including the impacts of accelerated depreciation totaling $376 million, $125 million and $174 million in 2020, 2019 and 2018, respectively, for Utah's share of certain thermal plant units in 2020 and 2018, including Cholla Unit No. 4 in 2020 for which operations ceased in December 2020; Oregon's and Idaho's shares of Cholla Unit No. 4 in 2020; and Oregon's share of certain retired wind equipment associated with wind repowering projects in 2020 and 2019. As discussed in Notes 6 and 9, existing regulatory liabilities primarily associated with the Utah Sustainability and Transportation Plan ("STEP") and 2017 Tax Reform benefits were utilized to accelerate depreciation of these assets.

PacifiCorp filed a depreciation study in 2018 with each of its state public utility commissions except the California Public Utilities Commission. In 2020, PacifiCorp reached settlement stipulations with parties to the depreciation study in each state in which the study was filed and received commission orders to implement revised depreciation rates effective January 1, 2021. In December 2020, PacifiCorp filed applicable revised depreciation rates with the FERC under PacifiCorp's open access transmission tariff, which were accepted by the FERC effective January 1, 2021. The revised depreciation rates will result in an estimated increase in depreciation expense of $176 million in 2021 on a total company basis based on historical property, plant and equipment balances and including depreciation of certain coal-fueled generating units in Oregon and Washington over accelerated periods. These accelerated depreciable lives for the coal-fueled units are mainly due to state legislation requiring these costs to be excluded from customers' rates before 2026 and 2030 for Washington and Oregon, respectively.

Unallocated Acquisition Adjustments

PacifiCorp has unallocated acquisition adjustments that represent the excess of costs of the acquired interests in property, plant and equipment purchased from the entity that first dedicated the assets to utility service over their net book value in those assets. These unallocated acquisition adjustments included in other property, plant and equipment had an original cost of $156 million as of December 31, 2020 and 2019, and accumulated depreciation of $140 million and $132 million as of December 31, 2020 and 2019, respectively.


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(4)Jointly Owned Utility Facilities

Under joint facility ownership agreements with other utilities, PacifiCorp, as a tenant in common, has undivided interests in jointly owned generation, transmission and distribution facilities. PacifiCorp accounts for its proportionate share of each facility, and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include PacifiCorp's share of the expenses of these facilities.

The amounts shown in the table below represent PacifiCorp's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2020 (dollars in millions):
FacilityAccumulatedConstruction
PacifiCorpinDepreciation andWork-in-
ShareServiceAmortizationProgress
Jim Bridger Nos. 1 - 467 %$1,485 $714 $15 
Hunter No. 194 486 203 
Hunter No. 260 305 127 
Wyodak80 476 254 
Colstrip Nos. 3 and 410 255 145 
Hermiston50 184 93 
Craig Nos. 1 and 219 368 305 
Hayden No. 125 75 42 
Hayden No. 213 44 25 
Transmission and distribution facilitiesVarious857 263 100 
Total$4,535 $2,171 $126 

(5)    Leases

The following table summarizes PacifiCorp's leases recorded on the Consolidated Balance Sheets as of December 31 (in millions):
20202019
Right-of-use assets:
Operating leases$11 $12 
Finance leases17 19 
Total right-of-use assets$28 $31 
Lease liabilities:
Operating leases$11 $12 
Finance leases17 19 
Total lease liabilities$28 $31 

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The following table summarizes PacifiCorp's lease costs for the years ended December 31 (in millions):
20202019
Variable$60 $77 
Operating
Finance:
Amortization
Interest
Short-term
Total lease costs$68 $85 
Weighted-average remaining lease term (years):
Operating leases13.914.0
Finance leases8.49.1
Weighted-average discount rate:
Operating leases3.8 %3.7 %
Finance leases10.5 %10.6 %

Cash payments associated with operating and finance lease liabilities approximated lease cost for the years ended December 31, 2020 and 2019.

PacifiCorp has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$$$10 
2022
2023
2024
2025
Thereafter12 18 
Total undiscounted lease payments15 28 43 
Less - amounts representing interest(4)(11)(15)
Lease liabilities$11 $17 $28 

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(6)Regulatory Matters

Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future rates. PacifiCorp's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining
Life20202019
Employee benefit plans(1)
20 years$432 $422 
Utah mine disposition(2)
Various117 125 
Unamortized contract values3 years42 60 
Deferred net power costs1 year78 106 
Unrealized loss on derivative contracts2 years17 62 
Asset retirement obligation24 years252 140 
Demand side management (DSM)(3)
10 years196 
OtherVarious261 200 
Total regulatory assets$1,395 $1,123 
Reflected as:
Current assets$116 $63 
Noncurrent assets1,279 1,060 
Total regulatory assets$1,395 $1,123 

(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in rates when recognized.

(2)Amounts represent regulatory assets established as a result of the Utah mine disposition in 2015 for the United Mine Workers of America ("UMWA") 1974 Pension Plan withdrawal and closure costs incurred to date considered probable of recovery.

(3)At December 31, 2019, DSM regulatory assets were substantially offset by amounts billed to Utah retail customers under the related Utah STEP program. In accordance with the Utah general rate case order issued in December 2020, $185 million of amounts billed to Utah customers under the Utah STEP program were used to accelerate depreciation of certain coal-fueled generation units as discussed in Note 3.

PacifiCorp had regulatory assets not earning a return on investment of $707 million and $609 million as of December 31, 2020 and 2019, respectively.

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Regulatory Liabilities

Regulatory liabilities represent income to be recognized or amounts to be returned to customers in future periods. PacifiCorp's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining
Life20202019
Cost of removal(1)
26 years$1,125 $1,019 
Deferred income taxes(2)
Various1,463 1,653 
OtherVarious254 297 
Total regulatory liabilities$2,842 $2,969 
Reflected as:
Current liabilities$115 $56 
Noncurrent liabilities2,727 2,913 
Total regulatory liabilities$2,842 $2,969 

(1)Amounts represent estimated costs, as accrued through depreciation rates, of removing property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.

(2)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable of being passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

(7)Short-term Debt and Credit Facilities

The following table summarizes PacifiCorp's availability under its credit facilities as of December 31 (in millions):
2020:
Credit facilities$1,200 
Less:
Short-term debt(93)
Tax-exempt bond support(218)
Net credit facilities$889 
2019:
Credit facilities$1,200 
Less:
Short-term debt(130)
Tax-exempt bond support(256)
Net credit facilities$814 

As of December 31, 2020, PacifiCorp was in compliance with the covenants of its credit facilities and letter of credit arrangements.

PacifiCorp has a $600 million unsecured credit facility expiring in June 2022 and a $600 million unsecured credit facility expiring in June 2022 with one remaining one-year extension option subject to lender consent. These credit facilities, which support PacifiCorp's commercial paper program, certain series of its tax-exempt bond obligations and provide for the issuance of letters of credit, have variable interest rates based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities.

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As of December 31, 2020 and 2019, the weighted average interest rate on commercial paper borrowings outstanding was 0.16% and 2.05%, respectively. These credit facilities require that PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.

As of December 31, 2020 and 2019, PacifiCorp had $11 million and $13 million, respectively, of fully available letters of credit issued under committed arrangements. As of December 31, 2020 and 2019, $11 million and $13 million, respectively, support certain transactions required by third parties and generally have provisions that automatically extend the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior to the expiration date.

(8)Long-term Debt

PacifiCorp's long-term debt was as follows as of December 31 (dollars in millions):
20202019
AverageAverage
PrincipalCarryingInterestCarryingInterest
AmountValueRateValueRate
First mortgage bonds:
2.95% to 8.53%, due through 2025$2,149 $2,145 4.00 %$2,144 4.00 %
2.70% to 6.71%, due 2026 to 2030900 895 3.50 497 4.14 
5.25% to 7.70%, due 2031 to 2035800 796 6.33 795 6.33 
5.75% to 6.35%, due 2036 to 20392,500 2,485 6.06 2,484 6.06 
4.10% due 2042300 297 4.10 297 4.10 
3.30% to 4.15%, due 2049 to 20511,800 1,776 3.86 1,186 4.14 
Variable-rate series, tax-exempt bond obligations (2020-0.14% to 0.16%; 2019-1.60% to 1.80%):
Due 2020038 1.78 
Due 202525 25 0.14 24 1.75 
Due 2024 to 2025(1)
193 193 0.15 193 1.70 
Total long-term debt$8,667 $8,612 $7,658 

Reflected as:
20202019
Current portion of long-term debt$420 $38 
Long-term debt8,192 7,620 
Total long-term debt$8,612 $7,658 

(1)Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.
PacifiCorp's long-term debt generally includes provisions that allow PacifiCorp to redeem the first mortgage bonds in whole or in part at any time through the payment of a make-whole premium. Variable-rate tax-exempt bond obligations are generally redeemable at par value.

PacifiCorp currently has regulatory authority from the Oregon Public Utility Commission and the Idaho Public Utilities Commission to issue an additional $3.0 billion of long-term debt. PacifiCorp must make a notice filing with the Washington Utilities and Transportation Commission prior to any future issuance. PacifiCorp currently has an effective shelf registration statement filed with the United States Securities and Exchange Commission to issue an indeterminate amount of first mortgage bonds through September 2023.

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The issuance of PacifiCorp's first mortgage bonds is limited by available property, earnings tests and other provisions of PacifiCorp's mortgage. Approximately $30 billion of PacifiCorp's eligible property (based on original cost) was subject to the lien of the mortgage as of December 31, 2020.

As of December 31, 2020, the annual principal maturities of long-term debt for 2021 and thereafter are as follows (in millions):
Long-term
Debt
2021$420 
2022605 
2023449 
2024591 
2025302 
Thereafter6,300 
Total8,667 
Unamortized discount and debt issuance costs(55)
Total$8,612 

(9)Income Taxes

Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
2020 20192018
Current:
Federal$19 $158 $164 
State30 34 40 
Total49 192 204 
Deferred:
Federal(124)(132)(187)
State(9)
Total(123)(128)(196)
Investment tax credits(1)(3)(3)
Total income tax (benefit) expense$(75)$61 $

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
202020192018
Federal statutory income tax rate21 %21 %21 %
State income taxes, net of federal income tax benefit
Effects of ratemaking(22)(13)(17)
Federal income tax credits(13)(3)(7)
Other(1)
Effective income tax rate(11)%%%

Income tax credits relate primarily to production tax credits ("PTC") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for ten years from the date the qualifying generating facilities are placed in-service.
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Effects of ratemaking is primarily attributable to use of excess deferred income taxes of $118 million, $91 million and $127 million for 2020, 2019 and 2018, respectively, to accelerate depreciation of certain retired wind equipment and coal-fueled generating units and to amortize certain regulatory asset balances in accordance with regulatory orders issued in Utah, Oregon, and Idaho.

The net deferred income tax liability consists of the following as of December 31 (in millions):
2020 2019
Deferred income tax assets:
Regulatory liabilities$700 $731 
Employee benefits93 83 
Derivative contracts and unamortized contract values17 33 
State carryforwards73 70 
Loss contingencies63 
Asset retirement obligations65 61 
Other66 65 
1,077 1,046 
Deferred income tax liabilities:
Property, plant and equipment(3,311)(3,312)
Regulatory assets(343)(276)
Other(50)(21)
(3,704)(3,609)
Net deferred income tax liability$(2,627)$(2,563)

The following table provides PacifiCorp's net operating loss and tax credit carryforwards and expiration dates as of December 31, 2020 (in millions):
State
Net operating loss carryforwards$1,138 
Deferred income taxes on net operating loss carryforwards$53 
Expiration dates2023 - 2032
Tax credit carryforwards$20 
Expiration dates2021 - indefinite

The United States Internal Revenue Service has closed or effectively settled its examination of PacifiCorp's income tax returns through December 31, 2013. The statute of limitations for PacifiCorp's state income tax returns have expired through December 31, 2011, with the exception of Utah, for which the statute has expired through December 31, 2009. In addition, Idaho's statute of limitations has expired through December 31, 2016, except for the impact of any federal audit adjustments. The statute of limitations expiring for state filings may not preclude the state from adjusting the state net operating loss carryforward utilized in a year for which the statute of limitations is not closed.

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(10)    Employee Benefit Plans

PacifiCorp sponsors defined benefit pension and other postretirement benefit plans that cover certain of its employees, as well as a defined contribution 401(k) employee savings plan ("401(k) Plan"). In addition, PacifiCorp contributes to a joint trustee pension plan and a subsidiary previously contributed to a multiemployer pension plan for benefits offered to certain bargaining units.

Defined Benefit Plans

PacifiCorp's pension plans include non-contributory defined benefit pension plans, collectively the PacifiCorp Retirement Plan ("Retirement Plan"), and the Supplemental Executive Retirement Plan ("SERP"). The Retirement Plan is closed to all non-union employees hired after January 1, 2008. All non-union Retirement Plan participants hired prior to January 1, 2008 that did not elect to receive equivalent fixed contributions to the 401(k) Plan effective January 1, 2009 earned benefits based on a cash balance formula through December 31, 2016. Effective January 1, 2017, non-union employee participants with a cash balance benefit in the Retirement Plan are no longer eligible to receive pay credits in their cash balance formula. In general for union employees, benefits under the Retirement Plan were frozen at various dates from December 31, 2007 through December 31, 2011 as they are now being provided with enhanced 401(k) Plan benefits. However, certain limited union Retirement Plan participants continue to earn benefits under the Retirement Plan based on the employee's years of service and a final average pay formula. The SERP was closed to new participants as of March 21, 2006 and froze future accruals for active participants as of December 31, 2014.

During 2018, the Retirement Plan incurred a settlement charge of $22 million as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018.

PacifiCorp's other postretirement benefit plan provides healthcare and life insurance benefits to eligible retirees.

Net Periodic Benefit Cost

For purposes of calculating the expected return on plan assets, a market-related value is used. The market-related value of plan assets is calculated by spreading the difference between expected and actual investment returns over a five-year period beginning after the first year in which they occur.

Net periodic benefit cost for the plans included the following components for the years ended December 31 (in millions):
PensionOther Postretirement
202020192018202020192018
Service cost$$$$$$
Interest cost36 44 43 12 11 
Expected return on plan assets(56)(67)(72)(14)(21)(21)
Settlement22 
Net amortization18 11 13 (6)
Net periodic benefit (credit) cost$(2)$(12)$$$(7)$(14)


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Funded Status

The following table is a reconciliation of the fair value of derivative contractsplan assets for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, beginning of year$1,036 $942 $334 $297 
Employer contributions(1)
Participant contributions
Actual return on plan assets124 181 15 55 
Benefits paid(101)(91)(26)(24)
Plan assets at fair value, end of year$1,064 $1,036 $327 $334 
(1)Amounts represent employer contributions to the SERP.
The following table is estimated using unadjusted quoted pricesa reconciliation of the benefit obligations for identical contractsthe years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Benefit obligation, beginning of year$1,167 $1,105 $304 $298 
Service cost
Interest cost36 44 12 
Participant contributions
Actuarial loss100 109 14 11 
Benefits paid(101)(91)(26)(24)
Benefit obligation, end of year$1,202 $1,167 $307 $304 
Accumulated benefit obligation, end of year$1,202 $1,167 

The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, end of year$1,064 $1,036 $327 $334 
Less - Benefit obligation, end of year1,202 1,167 307 304 
Funded status$(138)$(131)$20 $30 
Amounts recognized on the Consolidated Balance Sheets:
Other assets$$$20 $30 
Accrued employee expenses(4)(4)
Other long-term liabilities(142)(134)
Amounts recognized$(138)$(131)$20 $30 

The SERP has no plan assets; however, PacifiCorp has a Rabbi trust that holds corporate-owned life insurance and other investments to provide funding for the future cash requirements of the SERP. The cash surrender value of all of the policies included in the Rabbi trust, net of amounts borrowed against the cash surrender value, plus the fair market in which PacifiCorp transacts. When quoted prices for identical contractsvalue of other Rabbi trust investments, was $61 million and $57 million as of December 31, 2020 and 2019, respectively. These assets are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimatesincluded in the plan assets in the above table, but are reflected in noncurrent other assets as of December 31, 2020 and 2019, respectively, on the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developedConsolidated Balance Sheets.

The projected benefit obligation and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainablethe accumulated benefit obligation for the first six years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable forpension plan were both in excess of the first six years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contractsthe plan assets as of December 31, 2020.
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Unrecognized Amounts

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
PensionOther Postretirement
2020201920202019
Net loss (gain)$455 $442 $(13)$(26)
Regulatory deferrals
Total$457 $443 $(10)$(20)

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 2020 and 2019 is as follows (in millions):
Accumulated
Other
RegulatoryComprehensive
AssetLossTotal
Pension
Balance, December 31, 2018$443 $17 $460 
Net (gain) loss arising during the year(11)(6)
Net amortization(10)(1)(11)
Total(21)(17)
Balance, December 31, 2019422 21 443 
Net loss arising during the year27 32 
Net amortization(17)(1)(18)
Total10 14 
Balance, December 31, 2020$432 $25 $457 
Regulatory
Asset (Liability)
Other Postretirement
Balance, December 31, 2018$
Net gain arising during the year(25)
Net amortization
Total(25)
Balance, December 31, 2019(20)
Net loss arising during the year13 
Net amortization(3)
Total10 
Balance, December 31, 2020$(10)

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Plan Assumptions

Weighted-average assumptions used to determine benefit obligations and net periodic benefit cost were as follows:
PensionOther Postretirement
202020192018202020192018
Benefit obligations as of December 31:
Discount rate2.50 %3.25 %4.25 %2.50 %3.20 %4.25 %
Rate of compensation increaseN/AN/AN/AN/AN/AN/A
Interest crediting rates for cash balance plan (1)(2)(3)
0.82 %2.27 %3.40 %N/AN/AN/A
Net periodic benefit cost for the years ended December 31:
Discount rate3.25 %4.25 %3.60 %3.20 %4.25 %3.60 %
Expected return on plan assets6.50 7.00 7.00 4.92 6.86 6.86 

(1)2020 Cash Balance Interest Crediting Rate assumption is 0.82% for 2021-2022 and 2.00% for 2023 and all future years for nonunion participants and 1.42% for 2021-2022 and 2.40% for 2023+ for union participants.
(2)2019 Cash Balance Interest Crediting Rate assumption was 2.27% for 2020-2021 and 2.10% for 2022 and all future years for nonunion participants and 2.16% for 2020-2021 and 2.70% for 2022+ for union participants.
(3)2018 Cash Balance Interest Crediting Rate assumption was 3.40% for 2019 and all future years for nonunion participants and 3.15% for 2019-2020 and 3.25% for 2021+ for union participants.
In establishing its assumption as to the expected return on plan assets, PacifiCorp utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.

As a functionresult of a plan amendment effective on January 1, 2017, the benefit obligation for the Retirement Plan is no longer affected by future increases in compensation. As a result of a labor settlement reached with UMWA in December 2014, the benefit obligation for the other postretirement plan is no longer affected by healthcare cost trends.

Contributions and Benefit Payments

Employer contributions to the pension and other postretirement benefit plans are expected to be $4 million and $1 million, respectively, during 2021. Funding to PacifiCorp's Retirement Plan trust is based upon the actuarially determined costs of the plan and the requirements of the Internal Revenue Code, the Employee Retirement Income Security Act of 1974 ("ERISA") and the Pension Protection Act of 2006, as amended ("PPA"). PacifiCorp considers contributing additional amounts from time to time in order to achieve certain funding levels specified under the PPA. PacifiCorp evaluates a variety of factors, including funded status, income tax laws and regulatory requirements, in determining contributions to its other postretirement benefit plan.

The expected benefit payments to participants in PacifiCorp's pension and other postretirement benefit plans for 2021 through 2025 and for the five years thereafter are summarized below (in millions):
Projected Benefit Payments
PensionOther Postretirement
2021$115 $24 
202299 23 
202394 22 
202487 22 
202582 20 
2026-2030341 90 

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Plan Assets

Investment Policy and Asset Allocations

PacifiCorp's investment policy for its pension and other postretirement benefit plans is to balance risk and return through a diversified portfolio of debt securities, equity securities and other alternative investments. Maturities for debt securities are managed to targets consistent with prudent risk tolerances. The plans retain outside investment advisors to manage plan investments within the parameters outlined by the Berkshire Hathaway Energy Company Investment Committee. The investment portfolio is managed in line with the investment policy with sufficient liquidity to meet near-term benefit payments.

In 2020, the assets of the PacifiCorp Master Retirement Trust were transferred into the BHE Master Retirement Trust.

The target allocations (percentage of plan assets) for PacifiCorp's pension and other postretirement benefit plan assets are as follows as of December 31, 2020:
Pension(1)
Other Postretirement(1)
%%
Debt securities(2)
25 - 3575 - 83
Equity securities(2)
53 - 6816 - 24
Limited partnership interests7 - 121 - 3

(1)The trust in which the PacifiCorp Retirement Plan is invested includes a separate account that is used to fund benefits for the other postretirement benefit plan. In addition to this separate account, the assets for the other postretirement benefit plan are held in Voluntary Employees' Beneficiary Association ("VEBA") trusts, each of which has its own investment allocation strategies. Target allocations for the other postretirement benefit plan include the separate account of the Retirement Plan trust and the VEBA trusts.
(2)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthinessinvestments in debt and durationequity securities.
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Fair Value Measurements
The following table presents the fair value of contracts. plan assets, by major category, for PacifiCorp's defined benefit pension plan (in millions):
Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
As of December 31, 2020:
Cash equivalents$$32 $$32 
Debt securities:
United States government obligations14 14 
Corporate obligations231 231 
Municipal obligations21 21 
Equity securities:
United States companies91 91 
Total assets in the fair value hierarchy$105 $284 $389 
Investment funds(2) measured at net asset value
587 
Limited partnership interests(3) measured at net asset value
88 
Investments at fair value$1,064 
As of December 31, 2019:
Cash equivalents$$24 $$24 
Debt securities:
United States government obligations21 21 
Corporate obligations94 94 
Municipal obligations10 10 
Agency, asset and mortgage-backed obligations42 42 
Equity securities:
United States companies355 355 
International companies15 15 
Investment funds(2)
55 55 
Total assets in the fair value hierarchy$446 $170 $616 
Investment funds(2) measured at net asset value
327 
Limited partnership interests(3) measured at net asset value
93 
Investments at fair value$1,036 

(1)Refer to Note 1113 for furtheradditional discussion regarding PacifiCorp's risk management and hedging activities.the three levels of the fair value hierarchy.

PacifiCorp's investments in money market(2)Investment funds are substantially comprised of mutual funds and investmentcollective trust funds. These funds consist of equity and debt securities of approximately 78% and 22%, respectively, for 2020 and 55% and 45%, respectively, for 2019, and are invested in United States and international securities of approximately 74% and 26%, respectively, for 2020 and 51% and 49%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate.
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The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit other postretirement plan (in millions):
Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
As of December 31, 2020:
Cash and cash equivalents$$$$
Debt securities:
United States government obligations11 11 
Corporate obligations86 86 
Municipal obligations16 16 
Agency, asset and mortgage-backed obligations44 44 
Equity securities:
United States companies
Total assets in the fair value hierarchy23 147 170 
Investment funds(2) measured at net asset value
153 
Limited partnership interests(3) measured at net asset value
Investments at fair value$327 
As of December 31, 2019:
Cash and cash equivalents$$$$
Debt securities:
United States government obligations12 12 
Corporate obligations26 26 
Municipal obligations
Agency, asset and mortgage-backed obligations22 22 
Equity securities:
United States companies74 74 
International companies
Investment funds(2)
44 44 
Total assets in the fair value hierarchy142 51 193 
Investment funds(2) measured at net asset value
136 
Limited partnership interests(3) measured at net asset value
Investments at fair value$334 

(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.
(2)Investment funds are stated at fair valuesubstantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 38% and 62%, respectively, for 2020 and 56% and 44%, respectively, for 2019, and are invested in United States and international securities of approximately 93% and 7%, respectively, for 2020 and 79% and 21%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily accounted for as available-for-sale securities. When available, PacifiCorp usesin real estate, buyout, growth equity and venture capital.
For level 1 investments, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security,For level 2 investments, the fair value is determined using pricing models or net asset values based on observable market inputsinputs. Shares of mutual funds not registered under the Securities Act of 1933, private equity limited partnership interests, common and quoted market prices of securities with similar characteristics.

PacifiCorp's long-term debt is carriedcommingled trust funds and investment entities are reported at costfair value based on the Consolidated Balance Sheets. Thenet asset value per unit, which is used for expedience purposes. A fund's net asset value is based on the fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because ofunderlying assets held by the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt as of December 31 (in millions):fund less its liabilities.


244

 2017 2016
 Carrying Fair Carrying Fair
 Value Value Value Value
        
Long-term debt$7,005
 $8,370
 $7,052
 $8,204


(13)Commitments and Contingencies

Legal Matters

PacifiCorp is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. PacifiCorp does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.
Environmental Laws and Regulations

PacifiCorp is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. PacifiCorp believes it is in material compliance with all applicable laws and regulations.


Hydroelectric RelicensingConstruction Commitments


PacifiCorp's Klamath hydroelectric system is currently operating under annual licenses with the FERC. In February 2010, PacifiCorp, the United States Department of the Interior, the United States Department of Commerce, the state of California, the state of Oregon and various other governmental and non-governmental settlement parties signed the Klamath Hydroelectric Settlement Agreement ("KHSA"). Among other things, the KHSA provided that the United States Department of the Interior would conduct scientific and engineering studies to assess whether removal of the Klamath hydroelectric system's mainstem dams wasThe Company's firm construction commitments reflected in the public interesttable above include the following major construction projects:
PacifiCorp's costs associated with certain generating plant, transmission and would advance restorationdistribution projects.
MidAmerican Energy's firm construction commitments primarily consisting of the Klamath Basin's salmonid fisheries. If it was determined that dam removal should proceed, dam removal would begin no earlier than 2020.

Congress failed to pass legislation needed to implement the original KHSA. Hence, in February 2016, the principal parties to the KHSA (PacifiCorp, the states of California and Oregon and the United States Departments of the Interior and Commerce) executed an agreement in principle committing to explore potential amendment of the KHSA to facilitate removal of the Klamath dams through a FERC process without the need for federal legislation. On April 6, 2016, PacifiCorp, the states of California and Oregon, and the United States Departments of the Interior and Commerce and other stakeholders executed an amendment to the KHSA. Consistent with the terms of the amended KHSA, on September 23, 2016, PacifiCorp and the Klamath River Renewal Corporation ("KRRC"), a private, independent nonprofit 501(c)(3) organization formed by signatories of the amended KSHA, jointly filed an application with the FERC to transfer the licensecontracts for the four mainstem Klamath River hydroelectricrepowering and construction of wind-powered generating facilities from PacifiCorp to the KRRC. Also on September 23, 2016, the KRRC filed an application with the FERC to surrender the license and decommission the facilities. The KRRC's license surrender application included a request for the FERC to refrain from acting on the surrender application until after the transfer of the license to the KRRC is effective.

Under the amended KHSA, PacifiCorp and its customers continue to be protected from uncapped dam removal costs and liabilities. The KRRC must indemnify PacifiCorp from liabilities associated with dam removal. The amended KHSA also limits PacifiCorp's contribution to facilities removal costs to no more than $200 million, of which up to $184 million would be collected from PacifiCorp's Oregon customers with the remainder to be collected from PacifiCorp's California customers. California voters approved a water bond measure in November 2014 from which the state of California's contribution towards facilities removal costs will be drawn. In accordance with this bond measure, additional funding of up to $250 million for facilities removal costs was included in the California state budget in 2016, with the funding effective for at least five years. If facilities removal costs exceed the combined funding that will be available from PacifiCorp's Oregon and California customers and the state of California, sufficient funds would need to be provided by the KRRC or an entity other than PacifiCorp in order for removal to proceed.

If certain conditions in the amended KHSA are not satisfied and the license does not transfer to the KRRC, PacifiCorp will resume relicensing with the FERC.

As of December 31, 2017, PacifiCorp's assets included $55 millionNevada Power's firm construction commitment consisting of costs associated with the Klamath hydroelectric system's mainstem damsplanned Dry Lake generating facility, a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage that will be developed in Clark County, Nevada and certain other generating plant projects.
AltaLink's investments in directly assigned transmission projects from the associated relicensingAESO.

Easements

The Company has non-cancelable easements for land on which certain of its assets, primarily wind-powered generating facilities, are located.

Maintenance, Service and settlement costs, which are being depreciated and amortized in accordance with state regulatory approvals through either December 31, 2019, or December 31, 2022, depending upon the state jurisdiction.Other Contracts


Hydroelectric Commitments

Certain of PacifiCorp's hydroelectric licenses contain requirements for PacifiCorp to make certain capital and operating expendituresThe Company has entered into service agreements related to its hydroelectric facilities. PacifiCorp estimates it is obligatednonregulated solar and wind-powered projects with third parties to make capital expenditures of approximately $239 million overoperate and maintain the next 10 yearsprojects under fixed-fee operating and maintenance agreements. Additionally, the Company has various non-cancelable maintenance, service and other contracts primarily related to turbine and equipment maintenance and various other service agreements.

Legal Matters

The Company is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. The Company does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.

California and Oregon 2020 Wildfires

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and Northern California (the "2020 Wildfires"). The wildfires spread across certain parts of PacifiCorp's service territory and surrounding areas across multiples counties in Oregon and California, including Siskiyou County, California; Jackson County, Oregon; Douglas County, Oregon; Marion County, Oregon; Lincoln County, Oregon; and Klamath County, Oregon burning over 500,000 acres in aggregate. Third party reports for these licenses.wildfires indicate over 2,000 structures, including residences, destroyed; several structures damaged; multiple individuals injured; and several fatalities. Fire suppression costs estimated by various agencies total approximately $150 million. Investigations into the cause and origin of each wildfire are complex and ongoing and are being conducted by various entities, including the United States Forest Service, the California Public Utilities Commission, the Oregon Department of Forestry, the Oregon Department of Justice, PacifiCorp and various experts engaged by PacifiCorp.



NaN lawsuits have been filed in Oregon and California, including a putative class action complaint in Oregon, on behalf of citizens and businesses who suffered damages from fires allegedly caused by PacifiCorp. The final determinations of liability, however, will only be made following comprehensive investigations and litigation processes.
Commitments


186


In California, under inverse condemnation, courts have held that investor-owned utilities can be liable for real and personal property damages without the utility being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover reasonable attorney fees and costs. In both Oregon and California, PacifiCorp has equipment in areas accessed through special use permits, easements or similar agreements that may contain provisions requiring it to pay for damages caused by its equipment regardless of fault. Even if inverse condemnation or other provisions do not apply, PacifiCorp could nevertheless be found liable for all damages proximately caused by negligence, including property and natural resource damage; fire suppression costs; personal injury and loss of life damages; and interest.

PacifiCorp has accrued $136 million as its best estimate of the following firm commitmentspotential losses net of expected insurance recoveries associated with the 2020 Wildfires that are not reflected onconsidered probable of being incurred. These accruals include estimated losses for fire suppression costs, property damage, personal injury damages and loss of life damages. It is reasonably possible that PacifiCorp will incur additional losses beyond the Consolidated Balance Sheet. Minimum payments asamounts accrued; however, PacifiCorp is currently unable to estimate the range of December 31, 2017possible additional losses that could be incurred due to the number of properties and parties involved and the lack of specific claims for all potential claimants. To the extent losses beyond the amounts accrued are as follows (in millions):

 2018 2019 2020 2021 2022 2023 and Thereafter Total
Contract type:             
Purchased electricity contracts -             
commercially operable$276
 $165
 $161
 $150
 $145
 $1,574
 $2,471
Purchased electricity contracts -             
non-commercially operable9
 18
 26
 26
 27
 451
 557
Fuel contracts695
 619
 591
 453
 337
 1,268
 3,963
Construction commitments85
 29
 3
 
 
 
 117
Transmission112
 96
 66
 49
 39
 428
 790
Operating leases and easements7
 7
 7
 7
 6
 97
 131
Maintenance, service and             
other contracts36
 34
 22
 25
 14
 80
 211
Total commitments$1,220
 $968
 $876
 $710
 $568
 $3,898
 $8,240
Purchased Electricity Contracts - Commercially Operable

As part of its energy resource portfolio, PacifiCorp acquiresincurred, additional insurance coverage is expected to be available to cover at least a portion of its electricity through long-term purchasesthe losses.

Environmental Laws and exchange agreements. PacifiCorp has several power purchase agreements with wind-powered generating facilities that are not included in the table above as the payments are based on the amount of energy generatedRegulations

The Company is subject to federal, state, local and there are no minimum payments. Included in the purchased electricity payments are any power purchase agreements that meet the definition of a lease. Rent expense related to those power purchase agreements that meet the definition of a lease totaled $14 million for 2017foreign laws and 2016regulations regarding climate change, renewable portfolio standards, air and $13 million for 2015.

Included in the minimum fixed annual payments for purchased electricity above are commitments to purchase electricity from several hydroelectric systems under long-term arrangements with public utility districts. These purchases are made on a "cost-of-service" basis for a stated percentage of system outputwater quality, emissions performance standards, coal combustion byproduct disposal, hazardous and for a like percentage of system operating expensessolid waste disposal, protected species and debt service. These costs are included in energy costs on the Consolidated Statements of Operations. PacifiCorp is required to pay its portion of operating costs and its portion of the debt service, whether or not any electricity is produced. These arrangements accounted for less than 5% of PacifiCorp's 2017, 2016 and 2015 energy sources.

Purchased Electricity Contracts - Non-commercially Operable

PacifiCorp has several contracts for purchases of electricity from facilitiesother environmental matters that have not yet achieved commercial operation. To the extent any of these facilities do not achieve commercial operation, PacifiCorp has no obligationpotential to impact the counterparty.Company's current and future operations. The Company believes it is in material compliance with all applicable laws and regulations.


Fuel Contracts

PacifiCorp has "take or pay" coal and natural gas contracts that require minimum payments.

Construction Commitments


PacifiCorp'sThe Company's firm construction commitments includedreflected in the table above relate to firm commitments and include the following major construction projects:
PacifiCorp's costs associated with certain generating plant, transmission and distribution projects.

Transmission

PacifiCorp hasMidAmerican Energy's firm construction commitments primarily consisting of contracts for the right to transmit electricity overrepowering and construction of wind-powered generating facilities.
Nevada Power's firm construction commitment consisting of costs associated with the planned Dry Lake generating facility, a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage that will be developed in Clark County, Nevada and certain other entities'generating plant projects.
AltaLink's investments in directly assigned transmission lines to facilitate delivery to PacifiCorp's customers.projects from the AESO.



Operating Leases and Easements


PacifiCorp has non-cancelable operating leases primarily for certain operating facilities, office space, land and equipment that expire at various dates through the year ending December 31, 2096. These leases generally require PacifiCorp to pay for insurance, taxes and maintenance applicable to the leased property. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. PacifiCorp alsoThe Company has non-cancelable easements for land on which certain of its assets, primarily wind-powered generating facilities, are located. Rent expense totaled $15

Maintenance, Service and Other Contracts

The Company has entered into service agreements related to its nonregulated solar and wind-powered projects with third parties to operate and maintain the projects under fixed-fee operating and maintenance agreements. Additionally, the Company has various non-cancelable maintenance, service and other contracts primarily related to turbine and equipment maintenance and various other service agreements.

Legal Matters

The Company is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. The Company does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.

California and Oregon 2020 Wildfires

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and Northern California (the "2020 Wildfires"). The wildfires spread across certain parts of PacifiCorp's service territory and surrounding areas across multiples counties in Oregon and California, including Siskiyou County, California; Jackson County, Oregon; Douglas County, Oregon; Marion County, Oregon; Lincoln County, Oregon; and Klamath County, Oregon burning over 500,000 acres in aggregate. Third party reports for these wildfires indicate over 2,000 structures, including residences, destroyed; several structures damaged; multiple individuals injured; and several fatalities. Fire suppression costs estimated by various agencies total approximately $150 million. Investigations into the cause and origin of each wildfire are complex and ongoing and are being conducted by various entities, including the United States Forest Service, the California Public Utilities Commission, the Oregon Department of Forestry, the Oregon Department of Justice, PacifiCorp and various experts engaged by PacifiCorp.

NaN lawsuits have been filed in Oregon and California, including a putative class action complaint in Oregon, on behalf of citizens and businesses who suffered damages from fires allegedly caused by PacifiCorp. The final determinations of liability, however, will only be made following comprehensive investigations and litigation processes.


186


In California, under inverse condemnation, courts have held that investor-owned utilities can be liable for real and personal property damages without the utility being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover reasonable attorney fees and costs. In both Oregon and California, PacifiCorp has equipment in areas accessed through special use permits, easements or similar agreements that may contain provisions requiring it to pay for damages caused by its equipment regardless of fault. Even if inverse condemnation or other provisions do not apply, PacifiCorp could nevertheless be found liable for all damages proximately caused by negligence, including property and natural resource damage; fire suppression costs; personal injury and loss of life damages; and interest.

PacifiCorp has accrued $136 million as its best estimate of the potential losses net of expected insurance recoveries associated with the 2020 Wildfires that are considered probable of being incurred. These accruals include estimated losses for fire suppression costs, property damage, personal injury damages and loss of life damages. It is reasonably possible that PacifiCorp will incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred due to the number of properties and parties involved and the lack of specific claims for all potential claimants. To the extent losses beyond the amounts accrued are incurred, additional insurance coverage is expected to be available to cover at least a portion of the losses.

Environmental Laws and Regulations

The Company is subject to federal, state, local and foreign laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact the Company's current and future operations. The Company believes it is in material compliance with all applicable laws and regulations.

Hydroelectric Relicensing

PacifiCorp is a party to the 2016 amended Klamath Hydroelectric Settlement Agreement ("KHSA"), which is intended to resolve disputes surrounding PacifiCorp's efforts to relicense the Klamath Hydroelectric Project. The KHSA establishes a process for PacifiCorp, the states of Oregon and California ("States") and other stakeholders to assess whether dam removal can occur consistent with the settlement's terms. For PacifiCorp, the key elements of the settlement include: (1) a contribution from PacifiCorp's Oregon and California customers capped at $200 million plus $250 million in California bond funds; (2) complete indemnification from harms associated with dam removal; (3) transfer of the Federal Energy Regulatory Commission ("FERC") license to a third-party dam removal entity, the Klamath River Renewal Corporation ("KRRC"), who would conduct dam removal; and (4) ability for PacifiCorp to operate the facilities for the years endedbenefit of customers until dam removal commences.

In September 2016, the KRRC and PacifiCorp filed a joint application with the FERC to transfer the license for the four mainstem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in a July 2020 order, subject to the condition that PacifiCorp remains co-licensee. Under the amended KHSA, PacifiCorp did not agree to remain co-licensee during the surrender and removal process given concerns about liability protections for PacifiCorp and its customers. In November 2020, PacifiCorp entered a memorandum of agreement (the "MOA") with the KRRC, the Karuk Tribe, the Yurok Tribe and the States to continue implementation of the KHSA. The agreement required the States, PacifiCorp and KRRC to file a new license transfer application by January 16, 2021 to remove PacifiCorp from the license for the Klamath Hydroelectric Project and add the States and KRRC as co-licensees for the purposes of surrender. On January 13, 2021, the new license transfer application was filed with the FERC, notifying it that PacifiCorp and the KRRC are not accepting co-licensee status under FERC's July 2020 order, and instead are seeking the license transfer outcome described in the new license transfer application. In addition, the MOA provides for additional contingency funding of $45 million, equally split between PacifiCorp and the States, and for PacifiCorp and the States to equally share in any additional cost overruns in the unlikely event that dam removal costs exceed the $450 million in funding to ensure dam removal is complete. The MOA also requires PacifiCorp to cover the costs associated with certain pre-existing environmental conditions.

As of December 31, 2017, 20162020, PacifiCorp's assets included $21 million of costs associated with the Klamath hydroelectric system's mainstem dams and 2015.the associated relicensing and settlement costs, which are being depreciated and amortized in accordance with state regulatory approvals in Utah, Wyoming and Idaho through December 31, 2022.


    Hydroelectric Commitments

Certain of PacifiCorp's hydroelectric licenses contain requirements for PacifiCorp to make certain capital and operating expenditures related to its hydroelectric facilities, which are estimated to be approximately $182 million over the next ten years.
187


Guarantees


PacifiCorpThe Company has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on the Company's consolidated financial results.

(17)    Revenue from Contracts with Customers

Energy Products and Services

The following table summarizes the Company's energy products and services revenue by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 22 (in millions):
For the Year Ended December 31, 2020
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,932 $1,924 $2,566 $$$$$(1)$9,421 
Retail Gas505 114 619 
Wholesale107 199 45 17 (2)366 
Transmission and
distribution
96 60 95 887 641 1,779 
Interstate pipeline1,397 (139)1,258 
Other108 110 
Total Regulated5,243 2,688 2,822 887 1,414 641 (142)13,553 
Nonregulated16 26 134 18 817 515 1,528 
Total Customer Revenue5,243 2,704 2,824 913 1,548 659 817 373 15,081 
Other revenue(1)
98 24 30 109 30 119 65 475 
Total$5,341 $2,728 $2,854 $1,022 $1,578 $659 $936 $438 $15,556 
For the Year Ended December 31, 2019
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,789 $1,938 $2,740 $$$$$(2)$9,465 
Retail Gas570 116 686 
Wholesale99 309 51 (2)457 
Transmission and
distribution
98 57 98 876 690 1,819 
Interstate pipeline1,122 (118)1,004 
Other
Total Regulated4,986 2,874 3,007 876 1,122 690 (122)13,433 
Nonregulated30 36 17 744 577 1,404 
Total Customer Revenue4,986 2,904 3,007 912 1,122 707 744 455 14,837 
Other revenue(1)
82 23 30 101 188 101 534 
Total$5,068 $2,927 $3,037 $1,013 $1,131 $707 $932 $556 $15,371 
188


For the Year Ended December 31, 2018
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail Electric$4,732 $1,915 $2,773 $$$$$(1)$9,419 
Retail Gas636 101 737 
Wholesale55 411 39 (4)501 
Transmission and
distribution
103 56 96 892 700 (1)1,846 
Interstate pipeline1,232 (125)1,107 
Other
Total Regulated4,890 3,018 3,011 892 1,232 700 (131)13,612 
Nonregulated14 39 10 673 624 1,360 
Total Customer Revenue4,890 3,032 3,011 931 1,232 710 673 493 14,972 
Other revenue(1)
136 21 28 89 (29)235 121 601 
Total$5,026 $3,053 $3,039 $1,020 $1,203 $710 $908 $614 $15,573 
(1)Includes net payments to counterparties for the financial settlement of certain derivative contracts at BHE Pipeline Group.

Real Estate Services

The following table summarizes the Company's real estate services revenue by line of business (in millions):
HomeServices
Years Ended December 31,
202020192018
Customer Revenue:
Brokerage$4,520 $4,028 $3,882 
Franchise76 68 67 
Total Customer Revenue4,596 4,096 3,949 
Mortgage and other revenue800 377 265 
Total$5,396 $4,473 $4,214 

Remaining Performance Obligations

The following table summarizes the Company's revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of December 31, 2020, by reportable segment (in millions):
Performance obligations expected to be satisfied
Less than 12 monthsMore than 12 monthsTotal
BHE Pipeline Group$2,563 $22,088 $24,651 
BHE Transmission647 647 
Total$3,210 $22,088 $25,298 

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(18)BHE Shareholders' Equity

Preferred Stock

In October 2020, BHE issued 3,750,000 shares of its Perpetual Preferred Stock (the "4% Perpetual Preferred Stock") for $3.75 billion to certain subsidiaries of Berkshire Hathaway Inc. The 4% Perpetual Preferred Stock has a liquidation preference of $1,000 per share and currently pays a 4.00% dividend per share on the liquidation preference. Dividends shall accrue and accumulate daily, be cumulative, compound semi-annually and, if declared, be payable in cash semi-annually in arrears on May 15 and November 15 of each year. If dividends are not declared and paid, any accumulating dividends shall continue to accumulate and compound. BHE may not make any dividends on shares of any other class or series of its capital stock (other than for dividends on shares of common stock payable in shares of common stock, unless the holders of the then outstanding 4% Perpetual Preferred Stock shall first receive, or simultaneously receive, a dividend in an amount at least equivalent to the amount accumulated and not previously paid. BHE may not declare or pay any dividends on shares of the 4% Perpetual Preferred Stock if such declaration or payment would constitute an event of default on BHE's senior indebtedness (as defined). BHE may, at its option, redeem the 4% Perpetual Preferred Stock in whole or in part at any time at a price per share equal to the liquidation preference.

Common Stock

On March 14, 2000, and as amended on December 7, 2005, BHE's shareholders entered into a Shareholder Agreement that provides specific rights to certain shareholders. One of these rights allows certain shareholders the ability to put their common shares to BHE at the then-current fair value dependent on certain circumstances controlled by BHE.

Restricted Net Assets

BHE has maximum debt-to-total capitalization percentage restrictions imposed by its senior unsecured credit facilities expiring in June 2022 which, in certain circumstances, limit BHE's ability to make cash dividends or distributions. As a result of this restriction, BHE has restricted net assets of $14.7 billion as of December 31, 2020.

Certain of BHE's subsidiaries have restrictions on their ability to dividend, loan or advance funds to BHE due to specific legal or regulatory restrictions, including, but not limited to, maximum debt-to-total capitalization percentages and commitments made to state commissions. As a result of these restrictions, BHE's subsidiaries had restricted net assets of $18.1 billion as of December 31, 2020.

(19)Components of Accumulated Other Comprehensive Loss, Net

The following table shows the change in accumulated other comprehensive loss attributable to BHE shareholders by each component of other comprehensive income (loss), net of applicable income taxes, for the year ended December 31 (in millions):
UnrecognizedForeignUnrealizedUnrealizedAOCI
Amounts onCurrencyGains onGains (Losses)Attributable
RetirementTranslationMarketableon Cash FlowTo BHE
BenefitsAdjustmentSecuritiesHedgesShareholders, Net
Balance, December 31, 2017$(383)$(1,129)$1,085 $29 $(398)
Adoption of ASU 2016-01— — (1,085)— (1,085)
Other comprehensive income (loss)25 (494)(462)
Balance, December 31, 2018(358)(1,623)36 (1,945)
Other comprehensive (loss) income(59)327 (29)239 
Balance, December 31, 2019(417)(1,296)(1,706)
Other comprehensive (loss) income(65)233 (15)153 
Balance, December 31, 2020$(482)$(1,063)$$(8)$(1,553)

Reclassifications from AOCI to net income for the years ended December 31, 2020, 2019 and 2018 were insignificant. Additionally, refer to the "Foreign Operations" discussion in Note 13 for information about unrecognized amounts on retirement benefits reclassifications from AOCI that do not impact net income in their entirety.
190


(20)Variable Interest Entities and Noncontrolling Interests

The primary beneficiary of a VIE is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE.

As part of the GT&S Transaction, BHE acquired an indirect 25% economic interest in Cove Point, consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE concluded that Cove Point is a VIE due to the limited partners lacking the characteristics of a controlling financial interest. BHE is the primary beneficiary of Cove Point as it has the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to it.

Included in noncontrolling interests on the Consolidated Balance Sheets are (i) Dominion Energy's 50% interest in Cove Point and Brookfield Super-Core Infrastructure Partner's 25% interest in Cove Point and (ii) preferred securities of subsidiaries of $58 million as of December 31, 2020 and 2019, consisting of $56 million of 8.061% cumulative preferred securities of Northern Electric plc, a subsidiary of Northern Powergrid, which are redeemable in the event of the revocation of Northern Electric plc's electricity distribution license by the Secretary of State, and $2 million of nonredeemable preferred stock of PacifiCorp.

(21)Supplemental Cash Flow Disclosures

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20202019
Cash and cash equivalents$1,290 $1,040 
Restricted cash and cash equivalents140 212 
Investments and restricted cash and cash equivalents and investments15 16 
Total cash and cash equivalents and restricted cash and cash equivalents$1,445 $1,268 

The summary of supplemental cash flow disclosures as of and for the years ending December 31 is as follows (in millions):
202020192018
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$1,855 $1,723 $1,713 
Income taxes received, net(1)
$1,361 $850 $780 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$801 $888 $823 

(1)Includes $1,504 million, $942 million and $884 million of income taxes received from Berkshire Hathaway in 2020, 2019 and 2018, respectively.

191


(22)Segment Information

The Company's reportable segments with foreign operations include Northern Powergrid, whose business is principally in the United Kingdom, BHE Transmission, whose business includes operations in Canada, and BHE Renewables, whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the Company's reportable segments is shown below (in millions):
Years Ended December 31,
202020192018
Operating revenue:
PacifiCorp$5,341 $5,068 $5,026 
MidAmerican Funding2,728 2,927 3,053 
NV Energy2,854 3,037 3,039 
Northern Powergrid1,022 1,013 1,020 
BHE Pipeline Group1,578 1,131 1,203 
BHE Transmission659 707 710 
BHE Renewables936 932 908 
HomeServices5,396 4,473 4,214 
BHE and Other(1)
438 556 614 
Total operating revenue$20,952 $19,844 $19,787 
   
Depreciation and amortization:   
PacifiCorp$1,209 $954 $979 
MidAmerican Funding716 638 609 
NV Energy502 482 456 
Northern Powergrid266 254 250 
BHE Pipeline Group231 115 126 
BHE Transmission201 240 247 
BHE Renewables284 282 268 
HomeServices45 47 51 
BHE and Other(1)
(1)(2)
Total depreciation and amortization$3,455 $3,011 $2,984 
   
Operating income:   
PacifiCorp$924 $1,072 $1,051 
MidAmerican Funding454 549 550 
NV Energy649 655 607 
Northern Powergrid421 472 486 
BHE Pipeline Group779 572 525 
BHE Transmission316 323 313 
BHE Renewables291 336 325 
HomeServices511 222 214 
BHE and Other(1)
(54)(51)
Total operating income4,291 4,150 4,072 
Interest expense(2,021)(1,912)(1,838)
Capitalized interest80 77 61 
Allowance for equity funds165 173 104 
Interest and dividend income71 117 113 
Gains (losses) on marketable securities, net4,797 (288)(538)
Other, net88 97 (9)
Total income before income tax expense (benefit) and equity (loss) income$7,471 $2,414 $1,965 
192


Years Ended December 31,
202020192018
Interest expense:
PacifiCorp$426 $401 $384 
MidAmerican Funding322 302 247 
NV Energy227 229 224 
Northern Powergrid130 139 141 
BHE Pipeline Group74 52 43 
BHE Transmission148 157 167 
BHE Renewables166 174 201 
HomeServices11 25 23 
BHE and Other(1)
517 433 408 
Total interest expense$2,021 $1,912 $1,838 
Income tax expense (benefit):
PacifiCorp$(75)$61 $
MidAmerican Funding(574)(377)(262)
NV Energy61 98 100 
Northern Powergrid96 59 61 
BHE Pipeline Group162 138 119 
BHE Transmission13 11 
BHE Renewables(2)
(602)(325)(158)
HomeServices138 51 52 
BHE and Other(1)
1,089 (314)(507)
Total income tax expense (benefit)$308 $(598)$(583)
Net income attributable to BHE shareholders:
PacifiCorp$741 $773 $739 
MidAmerican Funding818 781 669 
NV Energy410 365 317 
Northern Powergrid201 256 239 
BHE Pipeline Group528 422 387 
BHE Transmission231 229 210 
BHE Renewables(2)
521 431 329 
HomeServices375 160 145 
BHE and Other3,118 (467)(467)
Total net income attributable to BHE shareholders$6,943 $2,950 $2,568 
Capital expenditures:
PacifiCorp$2,540 $2,175 $1,257 
MidAmerican Funding1,836 2,810 2,332 
NV Energy675 657 503 
Northern Powergrid682 602 566 
BHE Pipeline Group659 687 427 
BHE Transmission372 247 270 
BHE Renewables95 122 817 
HomeServices36 54 47 
BHE and Other(130)10 22 
Total capital expenditures$6,765 $7,364 $6,241 
193


As of December 31,
202020192018
Property, plant and equipment, net:
PacifiCorp$22,430 $20,973 $19,570 
MidAmerican Funding19,279 18,377 16,169 
NV Energy9,865 9,613 9,367 
Northern Powergrid7,230 6,606 6,007 
BHE Pipeline Group15,097 5,482 4,904 
BHE Transmission6,445 6,157 5,824 
BHE Renewables5,645 5,976 6,155 
HomeServices159 161 141 
BHE and Other(22)(40)(50)
Total property, plant and equipment, net$86,128 $73,305 $68,087 
Total assets:
PacifiCorp$26,862 $24,861 $23,478 
MidAmerican Funding23,530 22,664 20,029 
NV Energy14,501 14,128 14,119 
Northern Powergrid8,782 8,385 7,427 
BHE Pipeline Group19,541 6,100 5,511 
BHE Transmission9,208 8,776 8,424 
BHE Renewables12,004 9,961 8,666 
HomeServices4,955 3,846 2,797 
BHE and Other7,933 1,330 1,738 
Total assets$127,316 $100,051 $92,189 
Years Ended December 31,
202020192018
Operating revenue by country:
United States$19,254 $18,108 $18,014 
United Kingdom1,022 1,011 1,017 
Canada653 706 710 
Philippines and other23 19 46 
Total operating revenue by country$20,952 $19,844 $19,787 
Income before income tax expense (benefit) and equity (loss) income by country:
United States$6,954 $1,866 $1,425 
United Kingdom338 326 307 
Canada173 178 155 
Philippines and other44 78 
Total income before income tax expense (benefit) and equity (loss) income by country:$7,471 $2,414 $1,965 
194


As of December 31,
202020192018
Property, plant and equipment, net by country:
United States$72,583 $60,634 $56,362 
United Kingdom7,134 6,504 5,895 
Canada6,401 6,157 5,817 
Philippines and other10 10 13 
Total property, plant and equipment, net by country$86,128 $73,305 $68,087 

(1)The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate to other corporate entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.

(2)Income tax expense (benefit) includes the tax attributes of disregarded entities that are not required to pay income taxes and the earnings of which are taxable directly to BHE.

The following table shows the change in the carrying amount of goodwill by reportable segment for the years ended December 31, 2020 and 2019 (in millions):
BHEBHE
MidAmericanNVNorthernPipelineBHEBHEHome-and
PacifiCorpFundingEnergyPowergridGroupTransmissionRenewablesServicesOtherTotal
December 31, 2018$1,129 $2,102 $2,369 $952 $73 $1,448 $95 $1,427 $$9,595 
Acquisitions29 29 
Foreign currency translation26 72 98 
December 31, 20191,129 2,102 2,369 978 73 1,520 95 1,456 9,722 
Acquisitions1,730 1,731 
Foreign currency translation22 31 53 
December 31, 2020$1,129 $2,102 $2,369 $1,000 $1,803 $1,551 $95 $1,457 $$11,506 

195


PacifiCorp and its subsidiaries
Consolidated Financial Section

196


Item 6.    Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of PacifiCorp during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with Item 6 of this Form 10-K and with PacifiCorp's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. PacifiCorp's actual results in the future could differ significantly from the historical results.

Results of Operations

Overview

Net income for the year ended December 31, 2020, was $739 million, a decrease of $32 million, or 4%, compared to 2019, primarily due to costs associated with the 2020 Wildfires and the Klamath Hydroelectric Project of $169 million, higher net interest expense of $36 million from higher long-term debt and lower cash balances, higher pension and other postretirement costs of $13 million, and higher property taxes of $10 million, partially offset by lower income tax expense of $99 million (excluding $37 million fully offset primarily in depreciation expense) primarily driven by higher PTCs substantially due to repowered wind-powered generating facilities and lower pre-tax income, higher utility margin of $47 million (excluding $231 million fully offset in depreciation, operating, other income/expense and income tax expense as a result of regulatory adjustments as ordered by the UPSC, the OPUC and the IPUC), higher allowances for equity and borrowed funds used during construction of $38 million, and prior year costs associated with the early retirement of a coal-fueled generation unit totaling $24 million. Utility margin increased primarily due to lower coal-fueled generation volumes, lower purchased electricity prices, higher average retail rates, and lower natural gas-fueled generation costs, partially offset by lower net deferrals of incurred net power costs in accordance with established adjustment mechanisms, lower retail customer volumes and higher purchased electricity volumes. Retail customer volumes decreased 1.4% primarily due to impacts of COVID-19, which resulted in lower industrial and commercial customer usage and higher residential customer usage, partially offset by an increase in the average number of residential and commercial customers and the favorable impact of weather. Energy generated decreased 4% for 2020 compared to 2019 primarily due to lower coal-fueled generation, partially offset by higher wind and hydroelectric-powered generation. Wholesale electricity sales volumes decreased 4% and purchased electricity volumes increased 9%.

Net income for the year ended December 31, 2019, was $771 million, an increase of $33 million, or 4%, compared to 2018, primarily due to higher allowances for funds used during construction of $55 million, lower pension and post retirement expense of $11 million primarily due to a prior year pension settlement charge of $22 million, partially offset by higher non-service cost components of pension and other postretirement expenses of $11 million, and higher utility margin of $4 million, partially offset by higher depreciation and amortization expense of $25 million from additional plant placed in-service, excluding a $49 million decrease in accelerated depreciation expense (offset in income tax expense) associated with Oregon's share of certain retired wind equipment in the current year and Utah's share of certain thermal plant units in the prior year, lower PTCs of $21 million from expirations, higher interest expense of $17 million, and higher operations and maintenance expense of $10 million, primarily due to costs associated with the early retirement of Cholla Unit 4 of $24 million, increase in vegetation management costs of $11 million, partially offset by a decrease in expenses primarily due to lower wildfire costs of $9 million. Utility margin increased primarily due to lower coal-fueled generation volumes, higher retail revenue, and higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms, partially offset by higher purchased electricity costs, and higher natural gas-fueled generation costs. Retail volumes increased 0.4% primarily due to the increase in the average number of residential and commercial customers and the favorable impact of weather on residential customer volumes in all states except Utah, partially offset by lower commercial usage primarily in Utah and Washington. Energy generated decreased 3% for 2019 compared to 2018 primarily due to lower coal-fueled, wind and hydroelectric-powered generation, partially offset by higher natural gas-fueled generation. Wholesale electricity sales volumes decreased 34% and purchased electricity volumes decreased 5%.

197


Non-GAAP Financial Measure

Management utilizes various key financial measures that are prepared in accordance with GAAP, as well as non-GAAP financial measures such as, utility margin, to help evaluate results of operations. Utility margin is calculated as operating revenue less cost of fuel and energy, which are captions presented on the Consolidated Statements of Operations.

PacifiCorp's cost of fuel and energy is generally recovered from its retail customers through regulatory recovery mechanisms and, as a result, changes in PacifiCorp's expenses included in regulatory recovery mechanisms result in comparable changes to revenue. As such, management believes utility margin more appropriately and concisely explains profitability rather than a discussion of revenue and cost of fuel and energy separately. Management believes the presentation of utility margin provides meaningful and valuable insight into the information management considers important to running the business and a measure of comparability to others in the industry.
Utility margin is not a measure calculated in accordance with GAAP and should be viewed as a supplement to, and not a substitute for, operating income, which is the most directly comparable financial measure prepared in accordance with GAAP. The following table provides a reconciliation of utility margin to operating income for the years ended December 31 (in millions):
20202019Change20192018Change
Utility margin:
Operating revenue$5,341 $5,068 $273 %$5,068 $5,026 $42 %
Cost of fuel and energy1,790 1,795 (5)— 1,795 1,757 38 
Utility margin3,551 3,273 278 3,273 3,269 — 
Operations and maintenance1,209 1,048 161 15 1,048 1,038 10 
Depreciation and amortization1,209 954 255 27 954 979 (25)(3)
Property and other taxes209 199 10 199 201 (2)(1)
Operating income$924 $1,072 $(148)(14)%$1,072 $1,051 $21 %

198


Utility Margin

A comparison of key operating results related to utility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue5,341 $5,068 $273 %$5,068 $5,026 $42 %
Cost of fuel and energy1,790 1,795 (5)— 1,795 1,757 38 
Utility margin$3,551 $3,273 $278 %$3,273 $3,269 $— %
Sales (GWhs):
Residential17,150 16,668 482 %16,668 16,227 441 %
Commercial(1)
17,727 18,151 (424)(2)18,151 18,078 73 — 
Industrial, irrigation and other(1)
19,683 20,524 (841)(4)20,524 20,810 (286)(1)
Total retail54,560 55,343 (783)(1)55,343 55,115 228 — 
Wholesale5,249 5,480 (231)(4)5,480 8,309 (2,829)(34)
Total sales59,809 60,823 (1,014)(2)%60,823 63,424 (2,601)(4)%
Average number of retail customers
(in thousands)1,967 1,933 34 %1,933 1,900 33 %
Average revenue per MWh:
Retail$90.59 $84.80 $5.79 %$84.80 $84.43 $0.37 — %
Wholesale$35.56 $35.21 $0.35 %$35.21 $22.56 $12.65 56 %
Heating degree days10,155 11,143 (988)(9)%11,143 9,810 1,333 14 %
Cooling degree days2,111 1,773 338 19 %1,773 1,983 (210)(11)%
Sources of energy (GWhs)(1):
Coal30,636 34,510 (3,874)(11)%34,510 36,481 (1,971)(5)%
Natural gas12,045 12,058 (13)— 12,058 10,555 1,503 14 
Hydroelectric(2)
3,044 2,842 202 2,842 3,263 (421)(13)
Wind and other(2)
3,948 2,385 1,563 66 2,385 3,205 (820)(26)
Total energy generated49,673 51,795 (2,122)(4)51,795 53,504 (1,709)(3)
Energy purchased14,054 12,906 1,148 12,906 13,579 (673)(5)
Total63,727 64,701 (974)(2)%64,701 67,083 (2,382)(4)%
Average cost of energy per MWh:
Energy generated(3)
$18.74 $19.36 $(0.62)(3)%$19.36 $18.91 $0.45 %
Energy purchased$47.60 $54.20 $(6.60)(12)%$54.20 $48.23 $5.97 12 %

(1)    GWh amounts are net of energy used by the related generating facilities.
(2)All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of RECs or other environmental commodities.
(3)    The average cost per MWh of energy generated includes only the cost of fuel associated with the generating facilities.

199


Year Ended December 31, 2020 Compared to Year Ended December 31, 2019

Utility margin increased $278 million for 2020 compared to 2019 primarily due to:
$249 million increase in retail revenue, including $234 million fully offset in depreciation expense and income tax expense due to accelerated depreciation of certain coal-fueled units in Utah and Oregon and recognition of certain Utah regulatory balances and higher average retail prices, partially offset by lower retail customer volumes. Retail customer volumes decreased 1.4% primarily due to impacts of COVID-19, which resulted in lower industrial and commercial customer usage and higher residential customer usage, partially offset by an increase in the average number of residential and commercial customers and the favorable impact of weather;
$49 million of lower coal-fueled generation costs primarily due to lower volumes of $78 million, partially offset by $37 million of accelerated recognition of certain Utah regulatory balances associated with the 2015 Utah mine disposition and certain Cholla Unit 4 related closure costs in Oregon and Idaho (offset in income tax expense) and higher prices of $9 million;
$34 million of higher other revenue due to recognition of prior OATT revenue related deferrals in Oregon used to accelerate the depreciation of certain retired wind equipment as a result of the 2020 Oregon RAC settlement (offset in depreciation expense);
$31 million of lower purchased electricity costs, primarily due to lower average market prices, partially offset by higher volumes; and
$24 million of lower natural gas-fueled generation costs primarily due to lower average prices and lower volumes.
The increases above were partially offset by:
$106 million primarily from lower deferrals and higher amortization of previous deferrals of incurred net power costs in accordance with established adjustment mechanisms.
Operations and maintenance increased $161 million, or 15%, for 2020 compared to 2019 primarily due to costs associated with the 2020 Wildfires of $136 million, net of expected insurance recoveries, and costs associated with the Klamath Hydroelectric Project of $33 million, higher vegetation management and wildfire mitigation costs of $26 million and increased bad debt expense of $5 million, partially offset by prior year costs associated with the early retirement of Cholla Unit 4 of $24 million and lower employee related expenses of $7 million as a result of COVID-19.
Depreciation and amortization increased $255 million, or 27%, for 2020 compared to 2019 primarily due to current year accelerated depreciation of $376 million as a result of regulatory adjustments ordered by the UPSC, the OPUC and the IPUC (fully offset in retail revenue, other revenue, and income tax expense), including accelerated depreciation of certain coal-fueled units and Oregon's share of certain retired wind equipment as a result the 2020 Oregon RAC settlement, partially offset by prior year accelerated depreciation of $120 million (offset in income tax expense) on Oregon's share of certain retired wind equipment due to repowering as a result of the 2019 Oregon RAC settlement.

Property and other taxes increased $10 million, or 5%, for 2020 compared to 2019 primarily due to higher property taxes in Oregon and Utah.

Interest expense increased $25 million, or 6%, for 2020 compared to 2019 primarily due to higher average long-term debt balances, partially offset by a lower weighted average long-term debt interest rate.

Allowance for borrowed and equity funds increased $38 million, or 35%, for 2020 compared to 2019 primarily due to higher qualified construction work-in-progress balances.

Interest and dividend income decreased$11 million, or 52%, for 2020 compared to 2019 primarily due to lower average interest rates in the current year.

Other, net decreased $22 million, or 69% for 2020 compared to 2019 primarily due to higher pension and post retirement costs of $13 million and costs associated with the recognition of Utah's share of the post retirement settlement loss associated with the 2015 Utah mine disposition (offset in income tax expense).

200


Income tax (benefit) expense decreased $136 million to a benefit of $75 million for 2020 compared to an expense of $61 million for 2019. The effective tax rate was (11)% and 7% for 2020 and 2019, respectively. The effective tax rate decreased primarily as a result of higher amortization of excess deferred income taxes in 2020 and higher PTCs. In 2020, $118 million of excess deferred income taxes was amortized pursuant to regulatory orders from Utah, Oregon and Idaho, whereby portions of excess deferred income taxes were used to accelerate depreciation of certain coal-fueled units and Oregon's share of certain retired wind equipment or offset other regulatory balances for these jurisdictions. In 2019, $91 million of Oregon's allocated excess deferred income taxes was amortized pursuant to the 2019 Oregon RAC proceeding, whereby a portion of Oregon's allocated excess deferred income taxes was used to accelerate depreciation for Oregon's share of certain retired wind equipment due to repowering.

Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

Utility margin increased $4 million for 2019 compared to 2018 primarily due to:
$54 million of lower coal-fueled generation costs primarily due to lower average volumes;
$40 million of higher retail revenue primarily from higher retail customer volumes. Retail volumes increased 0.4% primarily due to an increase in the average number of residential and commercial customers and the favorable impact of weather on residential customer volumes in all states except Utah, partially offset by lower commercial usage primarily in Utah and Washington;
$11 million of higher net deferrals of incurred net power costs in accordance with established adjustment mechanisms; and
$5 million of higher wholesale revenue from higher average market prices, offset by lower volumes.
The increases above were partially offset by:
$45 million of higher purchased electricity costs due to higher average market prices, offset by lower volumes;
$45 million of higher natural gas-fueled generation costs due to higher average volumes and prices; and
$11 million of higher wheeling costs and lower wheeling revenues.

Operations and maintenance increased $10 million, or 1%, for 2019 compared to 2018 primarily due to costs associated with the early retirement of Cholla Unit 4 in December 2020 of $24 million and an $11 million increase in vegetation management costs, partially offset by a $9 million decrease in fire suppression costs, a $7 million decrease in materials and supply expense primarily due to usage, and reduced labor and benefits expense primarily due to higher capitalized labor related to construction projects.

Depreciation and amortization decreased $25 million, or 3%, for 2019 compared to 2018 primarily due to a decrease in accelerated depreciation (offset in income tax expense) resulting from $174 million of accelerated depreciation in the prior year for Utah's share of certain thermal plant units pursuant to a 2017 Tax Reform settlement approved by the UPSC compared to $120 million of accelerated depreciation in the current year for Oregon's share of certain retired wind equipment due to repowering as ordered in the Oregon RAC proceeding, partially offset by higher plant-in-service.

Interest expense increased $17 million, or 4%, for 2019 compared to 2018 primarily due to higher average long-term debt balances.

Allowance for borrowed and equity funds increased $55 million, or 104%, for 2019 compared to 2018 primarily due to higher qualified construction work-in-progress balances.

Interest and dividend income increased $6 million, or 40%, for 2019 compared to 2018 primarily due to higher average cash and cash equivalents balances.

Other, net increased $24 million, or 300% for 2019 compared to 2018 primarily due to the prior year pension settlement charge of $22 million and higher cash surrender value of company owned life insurance policies of $5 million, partially offset by higher non-service cost components of pension and other postretirement expense of $11 million.

201


Income tax expense increased $56 million for 2019 compared to 2018 and the effective tax rate was 7% and 1% for 2019 and 2018, respectively. The effective tax rate increased primarily as a result of lower amortization of excess deferred income taxes in 2019 and expiring PTCs, slightly offset by the effects of ratemaking. In 2019, $91 million of Oregon's allocated excess deferred income taxes was amortized pursuant to the 2019 Oregon RAC proceeding, whereby a portion of Oregon's allocated excess deferred income taxes was used to accelerate depreciation for Oregon's share of certain retired wind equipment due to repowering. In 2018, $127 million of Utah's allocated excess deferred income taxes was amortized pursuant to a 2017 Tax Reform settlement approved by the UPSC, whereby a portion of Utah's allocated excess deferred incomes taxes was used to accelerate depreciation on Utah's share of certain coal-fueled units.

Liquidity and Capital Resources

As of December 31, 2020, PacifiCorp's total net liquidity was as follows (in millions):
Cash and cash equivalents$13 
Credit facilities(1)
1,200 
Less:
Short-term debt(93)
Tax-exempt bond support(218)
Net credit facilities889 
Total net liquidity$902 
Credit facilities:
Maturity dates2022

(1)Refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding PacifiCorp's credit facilities.
Operating Activities

Net cash flows from operating activities for the years ended December 31, 2020 and 2019 were $1.6 billion and $1.5 billion, respectively. The increase is primarily due to lower purchased power prices, lower cash paid for income taxes and lower operating expense payments due to timing, partially offset by lower collections from wholesale and retail customers and higher fuel expense payments due to timing.

Net cash flows from operating activities for the years ended December 31, 2019 and 2018 were $1.5 billion and $1.8 billion, respectively. The decrease is primarily due to higher payments for purchased power, timing of payments for operating expenses and lower receipts from retail customers.

The timing of PacifiCorp's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2020 and 2019 were $(2.5) billion and $(2.2) billion, respectively. The increase in net cash outflows from investing activities is mainly due to an increase in capital expenditures of $365 million, partially offset by proceeds from the settlement of notes receivable of $25 million associated with the sale of certain Utah mining assets in 2015. Refer to "Future Uses of Cash" for discussion of capital expenditures.

Net cash flows from investing activities for the years ended December 31, 2019 and 2018 were $(2.2) billion and $(1.3) billion, respectively. The increase in net cash outflows from investing activities is mainly due to an increase in capital expenditures of $918 million.


202


Financing Activities

Short-term Debt

Regulatory authorities limit PacifiCorp to $1.5 billion of short-term debt. As of December 31, 2020, PacifiCorp had $93 million of short-term debt outstanding at a weighted average interest rate of 0.16%. As of December 31, 2019, PacifiCorp had $130 million of short-term debt outstanding at a weighted average interest rate of 2.05%. For further discussion, refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

    Long-term Debt

In April 2020, PacifiCorp issued $400 million of its 2.70% First Mortgage Bonds due 2030 and $600 million of its 3.30% First Mortgage Bonds due 2051. PacifiCorp used the net proceeds to fund capital expenditures, primarily for renewable resources and associated transmission projects, and for general corporate purposes.

PacifiCorp made repayments on long-term debt totaling $38 million and $350 million during the years ended December 31, 2020 and 2019, respectively.

PacifiCorp's Mortgage and Deed of Trust creates a lien on most of PacifiCorp's electric utility property, allowing the issuance of bonds based on a percentage of utility property additions, bond credits arising from retirement of previously outstanding bonds or deposits of cash. The amount of bonds that PacifiCorp may issue generally is also subject to a net earnings test. As of December 31, 2020, PacifiCorp estimated it would be able to issue up to $10.8 billion of new first mortgage bonds under the most restrictive issuance test in the mortgage. Any issuances are subject to market conditions and amounts may be further limited by regulatory authorizations or commitments or by covenants and tests contained in other financing agreements. PacifiCorp also has the ability to release property from the lien of the mortgage on the basis of property additions, bond credits or deposits of cash.

    Credit Facilities

In 2020, PacifiCorp's credit facility support for outstanding variable rate tax-exempt bond obligations decreased by $38 million due to maturities.

In 2019, PacifiCorp completed a re-offering of variable rate tax-exempt bond obligations totaling $168 million, involving the cancellation, at PacifiCorp's request, of $170 million of letters of credit support by the issuing banks. As a result, PacifiCorp's credit facility support for outstanding variable rate tax-exempt bond obligations increased by $168 million.

    Debt Authorizations

PacifiCorp currently has regulatory authority from the OPUC and the IPUC to issue an additional $3 billion of long-term debt. PacifiCorp must make a notice filing with the WUTC prior to any future issuance. PacifiCorp currently has an effective shelf registration statement with the SEC to issue an indeterminate amount of first mortgage bonds through September 2023.

Preferred Stock

As of December 31, 2020 and 2019, PacifiCorp had non-redeemable preferred stock outstanding with an aggregate stated value of $2 million.

    Common Shareholder's Equity

In 2020 and 2019, PacifiCorp declared and paid dividends of $— million and $175 million, respectively, to PPW Holdings LLC.

    Capitalization

PacifiCorp manages its capitalization and liquidity position to maintain a prudent capital structure with an objective of retaining strong investment grade credit ratings, which is expected to facilitate continuing access to flexible borrowing arrangements at favorable costs and rates. This objective, subject to periodic review and revision, attempts to balance the interests of all shareholders, customers and creditors and provide a competitive cost of capital and predictable capital market access.

203


Under existing or prospective authoritative accounting guidance, such as guidance pertaining to consolidations and leases, it is possible that new purchase power and gas agreements, transmission arrangements or amendments to existing arrangements may be accounted for as lease obligations on PacifiCorp's financial statements. While PacifiCorp has successfully amended covenants in financing arrangements that may be impacted, it may be more difficult for PacifiCorp to comply with its capitalization targets or regulatory commitments concerning minimum levels of common equity as a percentage of capitalization. This may lead PacifiCorp to seek amendments or waivers under financing agreements and from regulators, delay or reduce dividends or spending programs, seek additional new equity contributions from its indirect parent company, BHE, or take other actions.

Future Uses of Cash

PacifiCorp has available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, capital contributions and other sources. These sources are expected to provide funds required for current operations, capital expenditures, debt retirements and other capital requirements. The availability and terms under which PacifiCorp has access to external financing depends on a variety of factors, including PacifiCorp's credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry.

Capital Expenditures

PacifiCorp has significant future capital requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital.

Historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ended December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
Wind generation$352 $933 $1,277 $101 $40 $632 
Electric distribution404 413 613 537 428 374 
Electric transmission230 612 405 461 961 1,173 
Other271 217 245 618 482 371 
Total$1,257 $2,175 $2,540 $1,717 $1,911 $2,550 

PacifiCorp's 2019 IRP identified a significant increase in renewable resource generation and associated transmission. PacifiCorp has included an estimate of the 2019 IRP resources in its forecast capital expenditures for 2021 through 2023. These estimates are likely to change as a result of the RFP process. PacifiCorp's historical and forecast capital expenditures include the following:

Wind generation includes both growth projects and operating expenditures. Growth projects include:
Construction of wind-powered generating facilities at PacifiCorp totaled $1,148 million for 2020 and $338 million for 2019 and includes 674 MWs of new wind-powered generating facilities that were placed in-service in 2020 and 516 MWs expected to be placed in-service in 2021. The energy production for these new facilities is expected to qualify for 100% of the federal PTCs available for ten years once the equipment is placed in-service. PacifiCorp's 2019 IRP identified 1,920 MWs of new wind-powered generating resources that are expected to come online in 2024. PacifiCorp anticipates that the additional new wind-powered generation will be a mixture of owned and contracted resources. Planned spending for the wind-powered generating facilities totals $43 million in 2021 and $533 million in 2023.
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Repowering existing wind-powered generating facilities at PacifiCorp totaled $125 million in 2020 and $585 million in 2019. Certain repowering projects were placed in-service in 2019 and 2020 with the remaining repowering projects expected to be placed in-service in 2021. The energy production from such repowered facilities is expected to qualify for 100% of the federal renewable electricity PTCs available for ten years following each facility's return to service. Planned spending for certain existing and new wind-powered generating facilities totals $42 million in 2021, $19 million in 2022 and $64 million in 2023.
Electric distribution includes both growth projects and operating expenditures. Operating expenditures includes planned spend on wildfire mitigation, wildfire damage restoration and storm damage repairs. Expenditures for these items totaled $187 million in 2020, and planned spending totals $156 million in 2021, $115 million in 2022 and $108 million in 2023. Remaining investments relate to expenditures for new connections and distribution.
Electric transmission includes both growth projects and operating expenditures. Transmission investment through 2020 primarily reflects costs for the 140-mile 500-kV Aeolus-Bridger/Anticline transmission line, a major segment of PacifiCorp's Energy Gateway Transmission expansion program, placed in-service in November 2020. Transmission system investment going forward primarily reflects investment in additional Energy Gateway Transmission segments expected to be placed in-service. Planned spending for the additional Energy Gateway Transmission segments totals $177 million in 2021, $674 million in 2022, and $873 million in 2023.
Other includes both growth projects and operating expenditures. Expenditures for information technology totaled $75 million in 2020, and planned spending totals $140 million in 2021, $151 million in 2022 and $129 million in 2023. Remaining investments relate to operating projects that consist of routine expenditures for generation and other infrastructure needed to serve existing and expected demand.
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Contractual Obligations

PacifiCorp has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes PacifiCorp's material contractual cash obligations as of December 31, 2020 (in millions):
Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
Long-term debt, including interest:
Fixed-rate obligations$814 $1,785 $1,330 $10,556 $14,485 
Variable-rate obligations(1)
— — 218 — 218 
Short-term debt, including interest93 — — — 93 
Operating and finance lease liabilities12 28 
Interest payments on operating and finance lease liabilities15 
Easements14 27 26 278 345 
Asset retirement obligations13 15 30 442 500 
Power purchase agreements - commercially operable(2):
Electricity commodity contracts179 307 270 1,298 2,054 
Electricity capacity contracts30 61 67 617 775 
Electricity mixed contracts14 28 27 113 182 
Power purchase agreements - non-commercially operable(2)
25 50 54 456 585 
Transmission104 187 123 409 823 
Fuel purchase agreements(2):
Natural gas supply and transportation97 56 53 173 379 
Coal supply and transportation539 738 404 438 2,119 
Other purchase obligations190 109 71 214 584 
Other long-term liabilities(3)
26 14 14 55 109 
Total contractual cash obligations$2,148 $3,386 $2,693 $15,067 $23,294 

(1)Consists of principal and interest for tax-exempt bond obligations with interest rates scheduled to reset periodically prior to maturity. Future variable interest rates are assumed to equal December 31, 2020 rates. Refer to "Interest Rate Risk" in Item 7A of this Form 10-K for additional discussion related to variable-rate liabilities.
(2)Commodity contracts are agreements for the delivery of energy. Capacity contracts are agreements that provide rights to energy output, generally of a specified generating facility. Forecasted or other applicable estimated prices were used to determine total dollar value of the commitments. PacifiCorp has several contracts for purchases of electricity from facilities that have not yet achieved commercial operation. To the extent any of these facilities do not achieve commercial operation, PacifiCorp has no obligation to the counterparty.
(3)Includes environmental and hydroelectric relicensing commitments recorded in the Consolidated Balance Sheets that are contractually or legally binding. Excludes regulatory liabilities and employee benefit plan obligations that are not legally or contractually fixed as to timing and amount. Deferred income taxes are excluded since cash payments are based primarily on taxable income for each year. Uncertain tax positions are also excluded because the amounts and timing of cash payments are not certain.

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COVID-19

In March 2020, COVID‑19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by PacifiCorp. While COVID-19 has impacted PacifiCorp's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. The states in which PacifiCorp operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by PacifiCorp related to customer collection activity and suspension of disconnections for non-payment, PacifiCorp has seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for the deferral or recovery of certain costs incurred in responding to COVID‑19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion.

PacifiCorp's business has been deemed essential and its employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain its electric generation, transmission and distribution system. In response to the effects of COVID‑19, PacifiCorp has implemented its business continuity plan to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID‑19.

Regulatory Matters

PacifiCorp is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further information regarding PacifiCorp's general regulatory framework and current regulatory matters.

Environmental Laws and Regulations

PacifiCorp is subject to federal, state and local laws and regulations regarding climate change, wildfire prevention and mitigation, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state, local and international agencies. PacifiCorp believes it is in material compliance with all applicable laws and regulations, although many are subject to interpretation that may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and PacifiCorp is unable to predict the impact of the changing laws and regulations on its operations and financial results.

Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations.

Collateral and Contingent Features

Debt and preferred securities of PacifiCorp are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of PacifiCorp's ability to, in general, meet the obligations of its issued debt or preferred securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time. As of December 31, 2020, PacifiCorp's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt from the recognized credit rating agencies were investment grade.

PacifiCorp has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt and a change in ratings is not an event of default under the applicable debt instruments. PacifiCorp's unsecured revolving credit facilities do not require the maintenance of a minimum credit rating level to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.
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Certain authorizations or exemptions by regulatory commissions for the issuance of securities are valid as long as PacifiCorp maintains investment grade ratings on senior secured debt. A downgrade below that level would necessitate new regulatory applications and approvals.

In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance" if there is a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2020, PacifiCorp would have been required to post $161 million of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. Refer to Note 12 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for a discussion of PacifiCorp's collateral requirements specific to PacifiCorp's derivative contracts.

Inflation

Historically, overall inflation and changing prices in the economies where PacifiCorp operates have not had a significant impact on PacifiCorp's consolidated financial results. PacifiCorp operates under a cost-of-service based rate structure administered by various state commissions and the FERC. Under this rate structure, PacifiCorp is allowed to include prudent costs in its rates, including the impact of inflation. PacifiCorp attempts to minimize the potential impact of inflation on its operations through the use of energy and other cost adjustment clauses and tariff riders, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.

Off-Balance Sheet Arrangements

PacifiCorp from time to time enters into arrangements in the normal course of business to facilitate commercial transactions with third parties that involve guarantees or similar arrangements. PacifiCorp currently has indemnification obligations in connection with the sale or transfer of certain assets. In addition, PacifiCorp evaluates potential obligations that arise out of variable interests in unconsolidated entities, determined in accordance with authoritative accounting guidance. PacifiCorp believes that the likelihood that it would be required to perform or otherwise incur any significant losses associated with any of these obligations is remote. Refer to Notes 11 and 19 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for more information on these obligations and arrangements.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by PacifiCorp's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with PacifiCorp's Summary of Significant Accounting Policies included in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

PacifiCorp prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, PacifiCorp defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in rates occur.

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PacifiCorp continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit PacifiCorp's ability to recover its costs. PacifiCorp believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as AOCI. Total regulatory assets were $1.4 billion and total regulatory liabilities were $2.8 billion as of December 31, 2020. Refer to Note 6 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's regulatory assets and liabilities.

Derivatives

PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. PacifiCorp does not engage in a material amount of proprietary trading activities.

PacifiCorp has established a risk management process that is designed to identify, manage and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. PacifiCorp does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices. As of December 31, 2020, PacifiCorp had no derivative contracts outstanding related to interest rate risk. Refer to Notes 12 and 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's derivative contracts.

Measurement Principles

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by accounting principles generally accepted in the United States of America. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first three years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. As of December 31, 2020, PacifiCorp had a net derivative liability of $17 million related to contracts valued using either quoted prices or forward price curves based upon observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first three years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The assumptions used in these models are critical because any changes in assumptions could have a significant impact on the estimated fair value of the contracts. As of December 31, 2020, PacifiCorp had a net derivative asset of $— million related to contracts where PacifiCorp uses internal models with significant unobservable inputs.

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Classification and Recognition Methodology

PacifiCorp's derivative contracts are probable of inclusion in rates and changes in the estimated fair value of derivative contracts are generally recorded as regulatory assets. Accordingly, amounts are generally not recognized in earnings until the contracts are settled and the forecasted transaction has occurred. As of December 31, 2020, PacifiCorp had $17 million recorded as a regulatory asset related to derivative contracts on the Consolidated Balance Sheets.

Pension and Other Postretirement Benefits

PacifiCorp sponsors defined benefit pension and other postretirement benefit plans as described in Note 10. PacifiCorp recognizes the funded status of these defined benefit pension and other postretirement benefit plans on the Consolidated Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2020, PacifiCorp recognized a net liability totaling $118 million for the funded status of its defined benefit pension and other postretirement benefit plans. As of December 31, 2020, amounts not yet recognized as a component of net periodic benefit cost that were included in net regulatory assets and accumulated other comprehensive loss totaled $422 million and $25 million, respectively.

The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rate and expected long-term rate of return on plan assets. These key assumptions are reviewed annually and modified as appropriate. PacifiCorp believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 10 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for disclosures about PacifiCorp's defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2020.

PacifiCorp chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.

In establishing its assumption as to the expected long-term rate of return on plan assets, PacifiCorp evaluates the investment allocation between return-seeking investment and fixed income securities based on the funded status of the plan and utilizes the asset allocation and return assumptions for each asset class based on forward-looking views of the financial markets and historical performance. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. PacifiCorp regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.

The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Consolidated Financial Statements would be as follows (in millions):
Other Postretirement
Pension PlansBenefit Plan
+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020 Benefit Obligations:
Discount rate$(63)$69 $(15)$17 
Effect on 2020 Periodic Cost:
Discount rate$— $— $$(1)
Expected rate of return on plan assets(5)(2)

A variety of factors affect the funded status of the plans, including asset returns, discount rates, mortality assumptions, plan changes and PacifiCorp's funding policy for each plan.

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Income Taxes

In determining PacifiCorp's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by PacifiCorp's various regulatory commissions. PacifiCorp's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. PacifiCorp recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of PacifiCorp's federal, state and local income tax examinations is uncertain, PacifiCorp believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on PacifiCorp's consolidated financial results. PacifiCorp's unrecognized tax benefits are primarily included in other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Note 9 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's income taxes.

It is probable that PacifiCorp will pass income tax benefits and expense related to the federal tax rate change from 35% to 21% as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to their customers in certain state jurisdictions. As of December 31, 2020, these amounts were recognized as a net regulatory liability of $1.5 billion and will be included in regulated rates when the temporary differences reverse.

Revenue Recognition - Unbilled Revenue

Revenue is recognized as electricity is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $254 million as of December 31, 2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Estimates are reversed in the following month and actual revenue is recorded based on subsequent meter readings.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

PacifiCorp's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. PacifiCorp's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which PacifiCorp transacts. The following discussion addresses the significant market risks associated with PacifiCorp's business activities. PacifiCorp has established guidelines for credit risk management. Refer to Notes 2 and 12 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding PacifiCorp's contracts accounted for as derivatives.

PacifiCorp has a risk management committee that is responsible for the oversight of market and credit risk relating to the commodity transactions of PacifiCorp. To limit PacifiCorp's exposure to market and credit risk, the risk management committee recommends, and executive management establishes, policies, limits and approved products, which are reviewed frequently to respond to changing market conditions.

Risk is an inherent part of PacifiCorp's business and activities. PacifiCorp has established a risk management process that is designed to identify, manage and report each of the various types of risk involved in PacifiCorp's business. The risk management policy governs energy transactions and is designed for hedging PacifiCorp's existing energy and asset exposures, and to a limited extent, the policy permits arbitrage and trading activities to take advantage of market inefficiencies. The policy also governs the types of transactions authorized for use and establishes guidelines for credit risk management and management information systems required to effectively monitor such transactions. PacifiCorp's risk management policy provides for the use of only those contracts that have a similar volume or price relationship to its portfolio of assets, liabilities or anticipated transactions.


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Commodity Price Risk

PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as PacifiCorp has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. PacifiCorp does not engage in a material amount of proprietary trading activities. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. PacifiCorp's exposure to commodity price risk is generally limited by its ability to include commodity costs in rates, which is subject to regulatory lag that occurs between the time the costs are incurred and when the costs are included in rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.

PacifiCorp measures the market risk in its electricity and natural gas portfolio daily, utilizing a historical Value-at-Risk ("VaR") approach and other measurements of net position. PacifiCorp also monitors its portfolio exposure to market risk in comparison to established thresholds and measures its open positions subject to price risk in terms of quantity at each delivery location for each forward time period. VaR computations for the electricity and natural gas commodity portfolio are based on a historical simulation technique, utilizing historical price changes over a specified (holding) period to simulate potential forward energy market price curve movements to estimate the potential unfavorable impact of such price changes on the portfolio positions. The quantification of market risk using VaR provides a consistent measure of risk across PacifiCorp's continually changing portfolio. VaR represents an estimate of possible changes at a given level of confidence in fair value that would be measured on its portfolio assuming hypothetical movements in forward market prices and is not necessarily indicative of actual results that may occur.

PacifiCorp's VaR computations utilize several key assumptions. The calculation includes short-term commodity contracts, the expected resource and demand obligations from PacifiCorp's long-term contracts, the expected generation levels from PacifiCorp's generation assets and the expected retail and wholesale load levels. The portfolio reflects flexibility contained in contracts and assets, which accommodate the normal variability in PacifiCorp's demand obligations and generation availability. These contracts and assets are valued to reflect the variability PacifiCorp experiences as a load-serving entity. Contracts or assets that contain flexible elements are often referred to as having embedded options or option characteristics. These options provide for energy volume changes that are sensitive to market price changes. Therefore, changes in the option values affect the energy position of the portfolio with respect to market prices, and this effect is calculated daily. When measuring portfolio exposure through VaR, these position changes that result from the option sensitivity are held constant through the historical simulation. PacifiCorp's VaR methodology is based on a 36-month forward position, 95% confidence interval and one-day holding period.

As of December 31, 2020, PacifiCorp's estimated potential one-day unfavorable impact on fair value of the electricity and natural gas commodity portfolio over the next 36 months was $14 million, as measured by the VaR computations described above. The minimum, average and maximum daily VaR (one-day holding periods) were as follows for the year ended December 31 (in millions):
2020
Minimum VaR (measured)$
Average VaR (calculated)10 
Maximum VaR (measured)19 

PacifiCorp maintained compliance with its VaR limit procedures during the year ended December 31, 2020. Changes in markets inconsistent with historical trends or assumptions used could cause actual results to exceed estimated VaR levels.


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Fair Value of Derivatives

The table that follows summarizes PacifiCorp's price risk on commodity contracts accounted for as derivatives, excluding collateral netting of $24 million and $47 million as of December 31, 2020 and 2019, respectively, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices by the expected volumes for these contracts as of that date. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions):
Fair Value -Estimated Fair Value after
 Net AssetHypothetical Change in Price
(Liability)10% increase10% decrease
As of December 31, 2020:
Total commodity derivative contracts$(17)$$(39)
As of December 31, 2019
Total commodity derivative contracts$(63)$(44)$(82)

PacifiCorp's commodity derivative contracts are generally recoverable from customers in rates; therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose PacifiCorp to earnings volatility. As of December 31, 2020 and 2019, a regulatory asset of $17 million and $62 million, respectively, was recorded related to the net derivative liability of $17 million and $63 million, respectively. Consolidated financial results would be negatively impacted if the costs of wholesale electricity, natural gas or fuel are higher or the level of wholesale electricity sales are lower than what is included in rates, including the impacts of adjustment mechanisms.

Interest Rate Risk

PacifiCorp is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, PacifiCorp's fixed-rate long-term debt does not expose PacifiCorp to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if PacifiCorp were to reacquire all or a portion of these instruments prior to their maturity. PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. The nature and amount of PacifiCorp's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 7, 8 and 13 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of PacifiCorp's short- and long-term debt.

As of December 31, 2020 and 2019, PacifiCorp had short- and long-term variable-rate obligations totaling $310 million and $385 million, respectively that expose PacifiCorp to the risk of increased interest expense in the event of increases in short-term interest rates. The market risk related to PacifiCorp's variable-rate debt as of December 31, 2020 is not hedged. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on PacifiCorp's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 2020 and 2019.


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Credit Risk

PacifiCorp is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent PacifiCorp's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, PacifiCorp analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, PacifiCorp enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, PacifiCorp exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

As of December 31, 2020, PacifiCorp's aggregate credit exposure with wholesale energy supply and marketing counterparties included counterparties having non-investment grade, internally rated credit ratings. Substantially all of these non-investment grade, internally rated counterparties are associated with long-duration solar and wind power purchase agreements from facilities that have not yet achieved commercial operation and for which PacifiCorp has no obligation should the facilities not achieve commercial operation.

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Item 8.Financial Statements and Supplementary Data

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of PacifiCorp
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of PacifiCorp and subsidiaries ("PacifiCorp") as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, changes in shareholders' equity, and cash flows for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of PacifiCorp as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of PacifiCorp's management. Our responsibility is to express an opinion on PacifiCorp's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to PacifiCorp in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. PacifiCorp is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of PacifiCorp's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Regulatory Matters - Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 6 to the financial statements

Critical Audit Matter Description

PacifiCorp is subject to rate regulation by state public service commissions as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to rates in the respective service territories where PacifiCorp operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense; and income tax expense (benefit).
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Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow PacifiCorp an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While PacifiCorp has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit PacifiCorp's ability to recover its costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated PacifiCorp's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected PacifiCorp's filings with the Commissions and the filings with the Commissions by intervenors that may impact PacifiCorp's future rates, for any evidence that might contradict management's assertions.

We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

California and Oregon 2020 Wildfires – Contingencies – See Note 14 to the financial statements

Critical Audit Matter Description

PacifiCorp has loss contingencies related to the California and Oregon 2020 wildfires (the "2020 wildfires"). PacifiCorp has recorded estimated liabilities, net of expected insurance recoveries, of $136 million as of December 31, 2020, which represents its best estimate of probable losses, net of expected insurance recoveries, as a result of the 2020 wildfires.

We identified wildfire-related contingencies and the related disclosure as a critical audit matter because of the significant judgments made by management to estimate the losses. This required the application of a high degree of judgment and extensive effort when performing audit procedures to evaluate the reasonableness of management's estimate of the losses and disclosure related to wildfire-related loss contingencies.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's judgments regarding its estimate of losses for wildfire-related contingencies and the related disclosure included the following, among others:
We evaluated management's judgments related to whether a loss was probable and reasonably estimable, reasonably possible, or remote for each individual wildfire by inquiring of management and PacifiCorp's external and internal legal counsel regarding the amounts of probable and reasonably estimable, reasonably possible, and remote losses, including the potential impact of information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire, and external information for any evidence that might contradict management's assertions.
We evaluated the estimation methodology for determining the amount of probable loss through inquiries with management and its external and internal legal counsel.
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We tested the significant assumptions used in determining the estimate, including, but not limited to, information gained through management's and its external and internal legal counsel's ongoing investigations into the causes of each fire.
We read legal letters from PacifiCorp's external and internal legal counsel regarding information regarding ongoing litigation related to the 2020 wildfires and evaluated whether the information therein was consistent with the information obtained in our procedures.
We evaluated whether PacifiCorp's disclosures were appropriate and consistent with the information obtained in our procedures.

/s/ Deloitte & Touche LLP

Portland, Oregon
February 26, 2021

We have served as PacifiCorp's auditor since 2006.

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PACIFICORP AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$13 $30 
Trade receivables, net703 644 
Other receivables, net48 70 
Inventories482 394 
Regulatory assets116 63 
Prepaid expenses79 61 
Other current assets82 28 
Total current assets1,523 1,290 
Property, plant and equipment, net22,430 20,973 
Regulatory assets1,279 1,060 
Other assets470 374 
Total assets$25,702 $23,697 

The accompanying notes are an integral part of these consolidated financial statements.


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PACIFICORP AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)
As of December 31,
20202019
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
Accounts payable$772 $679 
Accrued interest127 116 
Accrued property, income and other taxes80 96 
Accrued employee expenses84 75 
Short-term debt93 130 
Current portion of long-term debt420 38 
Regulatory liabilities115 56 
Other current liabilities174 170 
Total current liabilities1,865 1,360 
Long-term debt8,192 7,620 
Regulatory liabilities2,727 2,913 
Deferred income taxes2,627 2,563 
Other long-term liabilities1,118 804 
Total liabilities16,529 15,260 
Commitments and contingencies (Note 14)00
Shareholders' equity:
Preferred stock
Common stock - 750 shares authorized, 0 par value, 357 shares issued and outstanding
Additional paid-in capital4,479 4,479 
Retained earnings4,711 3,972 
Accumulated other comprehensive loss, net(19)(16)
Total shareholders' equity9,173 8,437 
Total liabilities and shareholders' equity$25,702 $23,697 

The accompanying notes are an integral part of these consolidated financial statements.

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PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)
Years Ended December 31,
202020192018
Operating revenue$5,341 $5,068 $5,026 
Operating expenses:
Cost of fuel and energy1,790 1,795 1,757 
Operations and maintenance1,209 1,048 1,038 
Depreciation and amortization1,209 954 979 
Property and other taxes209 199 201 
Total operating expenses4,417 3,996 3,975 
Operating income924 1,072 1,051 
Other income (expense):
Interest expense(426)(401)(384)
Allowance for borrowed funds48 36 18 
Allowance for equity funds98 72 35 
Interest and dividend income10 21 15 
Other, net10 32 
Total other expense(260)(240)(308)
Income before income tax expense664 832 743 
Income tax (benefit) expense(75)61 
Net income$739 $771 $738 

The accompanying notes are an integral part of these consolidated financial statements.

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PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)
Years Ended December 31,
202020192018
Net income$739 $771 $738 
Other comprehensive (loss) income, net of tax —
Unrecognized amounts on retirement benefits, net of tax of $(1), $(1) and $1(3)(3)
Comprehensive income$736 $768 $740 

The accompanying notes are an integral part of these consolidated financial statements.

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PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
(Amounts in millions)
Accumulated
AdditionalOtherTotal
PreferredCommonPaid-inRetainedComprehensiveShareholders'
StockStockCapitalEarningsLoss, NetEquity
Balance, December 31, 2017$$$4,479 $3,089 $(15)$7,555 
Net income— — 738 738 
Other comprehensive income— — 
Common stock dividends declared— — (450)(450)
Balance, December 31, 20184,479 3,377 (13)7,845 
Net income— — 771 771 
Other comprehensive loss— — (1)(3)(4)
Common stock dividends declared— — (175)(175)
Balance, December 31, 20194,479 3,972 (16)8,437 
Net income— — 739 739 
Other comprehensive loss— — (3)(3)
Balance, December 31, 2020$$$4,479 $4,711 $(19)$9,173 

The accompanying notes are an integral part of these consolidated financial statements.

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PACIFICORP AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$739 $771 $738 
Adjustments to reconcile net income to net cash flows from operating
activities:
Depreciation and amortization1,209 954 979 
Allowance for equity funds(98)(72)(35)
Changes in regulatory assets and liabilities(229)(55)87 
Deferred income taxes and amortization of investment tax credits(124)(131)(199)
Other, net20 
Changes in other operating assets and liabilities:
Trade receivables, other receivables and other assets(154)26 31 
Inventories(88)23 16 
Prepaid expenses(15)(12)31 
Derivative collateral, net23 12 15 
Accrued property, income and other taxes, net(53)22 60 
Accounts payable and other liabilities372 (11)83 
Net cash flows from operating activities1,583 1,547 1,811 
Cash flows from investing activities:
Capital expenditures(2,540)(2,175)(1,257)
Other, net30 11 
Net cash flows from investing activities(2,510)(2,164)(1,252)
Cash flows from financing activities:
Proceeds from long-term debt987 989 593 
Repayments of long-term debt(38)(350)(586)
(Repayments of) net proceeds from short-term debt(37)100 (50)
Dividends paid(175)(450)
Other, net(2)(3)(3)
Net cash flows from financing activities910 561 (496)
Net change in cash and cash equivalents and restricted cash and cash equivalents(17)(56)63 
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period36 92 29 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$19 $36 $92 

The accompanying notes are an integral part of these consolidated financial statements.

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PACIFICORP AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)Organization and Operations

PacifiCorp, which includes PacifiCorp and its subsidiaries, is a United States regulated electric utility company serving retail customers, including residential, commercial, industrial, irrigation and other customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp owns, or has interests in, a number of thermal, hydroelectric, wind-powered and geothermal generating facilities, as well as electric transmission and distribution assets. PacifiCorp also buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants. PacifiCorp is subject to comprehensive state and federal regulation. PacifiCorp's subsidiaries support its electric utility operations by providing coal mining services. PacifiCorp is an indirect subsidiary of Berkshire Hathaway Energy Company ("BHE"), a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").

(2)Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of PacifiCorp and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for loss contingencies, including those related to the Oregon and Northern California 2020 wildfires (the "2020 Wildfires") described in Note 14. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

PacifiCorp prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, PacifiCorp defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in rates occur.

PacifiCorp continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit PacifiCorp's ability to recover its costs. PacifiCorp believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").

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Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Cash Equivalents and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds representing escrow accounts for disputes, vendor retention, custodial and nuclear decommissioning funds. Restricted amounts are included in other current assets and other assets on the Consolidated Balance Sheets.

Investments

Available-for-sale securities are carried at fair value with realized gains and losses, as determined on a specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of tax. As of December 31, 2020 and 2019, PacifiCorp had 0 unrealized gains and losses on available-for-sale securities. Trading securities are carried at fair value with realized and unrealized gains and losses recognized in earnings.

    Equity Method Investments

PacifiCorp utilizes the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when an investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, PacifiCorp records the investment at cost and subsequently increases or decreases the carrying value of the investment by PacifiCorp's proportionate share of the net earnings or losses and other comprehensive income (loss) ("OCI") of the investee. PacifiCorp records dividends or other equity distributions as reductions in the carrying value of the investment.

Allowance for Credit Losses

Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination, and are stated at the outstanding principal amount, net of an estimated allowance for credit losses. The allowance for credit losses is based on PacifiCorp's assessment of the collectability of amounts owed to PacifiCorp by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, PacifiCorp primarily utilizes credit loss history. However, PacifiCorp may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. The change in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31 (in millions):
202020192018
Beginning balance$$$10 
Charged to operating costs and expenses, net18 13 12 
Write-offs, net(9)(13)(14)
Ending balance$17 $$


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Derivatives

PacifiCorp employs a number of different derivative contracts, which may include forwards, options, swaps and other agreements, to manage price risk for electricity, natural gas and other commodities and interest rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements.

Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or energy costs on the Consolidated Statements of Operations.

For PacifiCorp's derivative contracts, the settled amount is generally included in rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in rates are recorded as regulatory liabilities or assets. For a derivative contract not probable of inclusion in rates, changes in the fair value are recognized in earnings.

Inventories

Inventories consist mainly of materials, supplies and fuel stocks and are stated at the lower of average cost or net realizable value.

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. PacifiCorp capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs, which include debt and equity allowance for funds used during construction ("AFUDC"). The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed.

Depreciation and amortization are generally computed on the straight-line method based on composite asset class lives prescribed by PacifiCorp's various regulatory authorities or over the assets' estimated useful lives. Depreciation studies are completed periodically to determine the appropriate composite asset class lives, net salvage and depreciation rates. These studies are reviewed and rates are ultimately approved by the various regulatory authorities. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.

Generally when PacifiCorp retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.

Debt and equity AFUDC, which represents the estimated costs of debt and equity funds necessary to finance the construction of property, plant and equipment, is capitalized as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC"). After construction is completed, PacifiCorp is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.

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Asset Retirement Obligations

PacifiCorp recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. PacifiCorp's AROs are primarily associated with its generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.

Impairment

PacifiCorp evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment supports PacifiCorp's regulated businesses the impacts of regulation are considered when evaluating the carrying value of regulated assets.

Leases

PacifiCorp has non-cancelable operating leases primarily for land, office space, office equipment, and generating facilities and finance leases consisting primarily of office buildings, natural gas pipeline facilities, and generating facilities. These leases generally require PacifiCorp to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. PacifiCorp does not include options in its lease calculations unless there is a triggering event indicating PacifiCorp is reasonably certain to exercise the option. PacifiCorp's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Right-of-use assets will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

PacifiCorp's leases of generating facilities generally are in the form of long-term purchases of electricity, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

PacifiCorp's operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Revenue Recognition

PacifiCorp uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which PacifiCorp expects to be entitled in exchange for those goods or services. PacifiCorp records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.

Substantially all of PacifiCorp's Customer Revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission and distribution and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. Other revenue consists primarily of revenue recognized in accordance with ASC 815, "Derivatives and Hedging."
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Revenue recognized is equal to what PacifiCorp has the right to invoice as it corresponds directly with the value to the customer of PacifiCorp's performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $254 million and $245 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

Unamortized Debt Premiums, Discounts and Debt Issuance Costs

Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.

Income Taxes

Berkshire Hathaway includes PacifiCorp in its consolidated United States federal income tax return. Consistent with established regulatory practice, PacifiCorp's provision for income taxes has been computed on a stand-alone basis.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using enacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of OCI are charged or credited directly to OCI. Changes in deferred income tax assets and liabilities that are associated with certain property-related basis differences and other various differences that PacifiCorp deems probable to be passed on to its customers in most state jurisdictions are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse or as otherwise approved by PacifiCorp's various regulatory commissions. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized.

Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory commissions. Investment tax credits are included in other long-term liabilities on the Consolidated Balance Sheets and were $12 million and $11 million as of December 31, 2020 and 2019, respectively.

In determining PacifiCorp's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by PacifiCorp's various regulatory commissions. PacifiCorp's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. PacifiCorp recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of PacifiCorp's federal, state and local income tax examinations is uncertain, PacifiCorp believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on PacifiCorp's consolidated financial results. PacifiCorp's unrecognized tax benefits are primarily included in other long-term liabilities on the Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

Segment Information

PacifiCorp currently has one segment, which includes its regulated electric utility operations.


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(3)Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20202019
Utility Plant:
Generation14 - 67 years$12,861 $12,509 
Transmission58 - 75 years7,632 6,482 
Distribution20 - 70 years7,660 7,307 
Intangible plant(1)
5 - 75 years1,054 1,016 
Other5 - 60 years1,510 1,449 
Utility plant in service30,717 28,763 
Accumulated depreciation and amortization(9,838)(9,803)
Utility plant in service, net20,879 18,960 
Other non-regulated, net of accumulated depreciation and amortization14 - 95 years10 
Plant, net20,888 18,970 
Construction work-in-progress1,542 2,003 
Property, plant and equipment, net$22,430 $20,973 

(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

The average depreciation and amortization rate applied to depreciable property, plant and equipment was 4.1%, 3.3% and 3.5% for the years ended December 31, 2020, 2019 and 2018, respectively, including the impacts of accelerated depreciation totaling $376 million, $125 million and $174 million in 2020, 2019 and 2018, respectively, for Utah's share of certain thermal plant units in 2020 and 2018, including Cholla Unit No. 4 in 2020 for which operations ceased in December 2020; Oregon's and Idaho's shares of Cholla Unit No. 4 in 2020; and Oregon's share of certain retired wind equipment associated with wind repowering projects in 2020 and 2019. As discussed in Notes 6 and 9, existing regulatory liabilities primarily associated with the Utah Sustainability and Transportation Plan ("STEP") and 2017 Tax Reform benefits were utilized to accelerate depreciation of these assets.

PacifiCorp filed a depreciation study in 2018 with each of its state public utility commissions except the California Public Utilities Commission. In 2020, PacifiCorp reached settlement stipulations with parties to the depreciation study in each state in which the study was filed and received commission orders to implement revised depreciation rates effective January 1, 2021. In December 2020, PacifiCorp filed applicable revised depreciation rates with the FERC under PacifiCorp's open access transmission tariff, which were accepted by the FERC effective January 1, 2021. The revised depreciation rates will result in an estimated increase in depreciation expense of $176 million in 2021 on a total company basis based on historical property, plant and equipment balances and including depreciation of certain coal-fueled generating units in Oregon and Washington over accelerated periods. These accelerated depreciable lives for the coal-fueled units are mainly due to state legislation requiring these costs to be excluded from customers' rates before 2026 and 2030 for Washington and Oregon, respectively.

Unallocated Acquisition Adjustments

PacifiCorp has unallocated acquisition adjustments that represent the excess of costs of the acquired interests in property, plant and equipment purchased from the entity that first dedicated the assets to utility service over their net book value in those assets. These unallocated acquisition adjustments included in other property, plant and equipment had an original cost of $156 million as of December 31, 2020 and 2019, and accumulated depreciation of $140 million and $132 million as of December 31, 2020 and 2019, respectively.


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(4)Jointly Owned Utility Facilities

Under joint facility ownership agreements with other utilities, PacifiCorp, as a tenant in common, has undivided interests in jointly owned generation, transmission and distribution facilities. PacifiCorp accounts for its proportionate share of each facility, and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include PacifiCorp's share of the expenses of these facilities.

The amounts shown in the table below represent PacifiCorp's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2020 (dollars in millions):
FacilityAccumulatedConstruction
PacifiCorpinDepreciation andWork-in-
ShareServiceAmortizationProgress
Jim Bridger Nos. 1 - 467 %$1,485 $714 $15 
Hunter No. 194 486 203 
Hunter No. 260 305 127 
Wyodak80 476 254 
Colstrip Nos. 3 and 410 255 145 
Hermiston50 184 93 
Craig Nos. 1 and 219 368 305 
Hayden No. 125 75 42 
Hayden No. 213 44 25 
Transmission and distribution facilitiesVarious857 263 100 
Total$4,535 $2,171 $126 

(5)    Leases

The following table summarizes PacifiCorp's leases recorded on the Consolidated Balance Sheets as of December 31 (in millions):
20202019
Right-of-use assets:
Operating leases$11 $12 
Finance leases17 19 
Total right-of-use assets$28 $31 
Lease liabilities:
Operating leases$11 $12 
Finance leases17 19 
Total lease liabilities$28 $31 

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The following table summarizes PacifiCorp's lease costs for the years ended December 31 (in millions):
20202019
Variable$60 $77 
Operating
Finance:
Amortization
Interest
Short-term
Total lease costs$68 $85 
Weighted-average remaining lease term (years):
Operating leases13.914.0
Finance leases8.49.1
Weighted-average discount rate:
Operating leases3.8 %3.7 %
Finance leases10.5 %10.6 %

Cash payments associated with operating and finance lease liabilities approximated lease cost for the years ended December 31, 2020 and 2019.

PacifiCorp has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$$$10 
2022
2023
2024
2025
Thereafter12 18 
Total undiscounted lease payments15 28 43 
Less - amounts representing interest(4)(11)(15)
Lease liabilities$11 $17 $28 

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(6)Regulatory Matters

Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future rates. PacifiCorp's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining
Life20202019
Employee benefit plans(1)
20 years$432 $422 
Utah mine disposition(2)
Various117 125 
Unamortized contract values3 years42 60 
Deferred net power costs1 year78 106 
Unrealized loss on derivative contracts2 years17 62 
Asset retirement obligation24 years252 140 
Demand side management (DSM)(3)
10 years196 
OtherVarious261 200 
Total regulatory assets$1,395 $1,123 
Reflected as:
Current assets$116 $63 
Noncurrent assets1,279 1,060 
Total regulatory assets$1,395 $1,123 

(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in rates when recognized.

(2)Amounts represent regulatory assets established as a result of the Utah mine disposition in 2015 for the United Mine Workers of America ("UMWA") 1974 Pension Plan withdrawal and closure costs incurred to date considered probable of recovery.

(3)At December 31, 2019, DSM regulatory assets were substantially offset by amounts billed to Utah retail customers under the related Utah STEP program. In accordance with the Utah general rate case order issued in December 2020, $185 million of amounts billed to Utah customers under the Utah STEP program were used to accelerate depreciation of certain coal-fueled generation units as discussed in Note 3.

PacifiCorp had regulatory assets not earning a return on investment of $707 million and $609 million as of December 31, 2020 and 2019, respectively.

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Regulatory Liabilities

Regulatory liabilities represent income to be recognized or amounts to be returned to customers in future periods. PacifiCorp's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining
Life20202019
Cost of removal(1)
26 years$1,125 $1,019 
Deferred income taxes(2)
Various1,463 1,653 
OtherVarious254 297 
Total regulatory liabilities$2,842 $2,969 
Reflected as:
Current liabilities$115 $56 
Noncurrent liabilities2,727 2,913 
Total regulatory liabilities$2,842 $2,969 

(1)Amounts represent estimated costs, as accrued through depreciation rates, of removing property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.

(2)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable of being passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

(7)Short-term Debt and Credit Facilities

The following table summarizes PacifiCorp's availability under its credit facilities as of December 31 (in millions):
2020:
Credit facilities$1,200 
Less:
Short-term debt(93)
Tax-exempt bond support(218)
Net credit facilities$889 
2019:
Credit facilities$1,200 
Less:
Short-term debt(130)
Tax-exempt bond support(256)
Net credit facilities$814 

As of December 31, 2020, PacifiCorp was in compliance with the covenants of its credit facilities and letter of credit arrangements.

PacifiCorp has a $600 million unsecured credit facility expiring in June 2022 and a $600 million unsecured credit facility expiring in June 2022 with one remaining one-year extension option subject to lender consent. These credit facilities, which support PacifiCorp's commercial paper program, certain series of its tax-exempt bond obligations and provide for the issuance of letters of credit, have variable interest rates based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities.

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As of December 31, 2020 and 2019, the weighted average interest rate on commercial paper borrowings outstanding was 0.16% and 2.05%, respectively. These credit facilities require that PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.

As of December 31, 2020 and 2019, PacifiCorp had $11 million and $13 million, respectively, of fully available letters of credit issued under committed arrangements. As of December 31, 2020 and 2019, $11 million and $13 million, respectively, support certain transactions required by third parties and generally have provisions that automatically extend the annual expiration dates for an additional year unless the issuing bank elects not to renew a letter of credit prior to the expiration date.

(8)Long-term Debt

PacifiCorp's long-term debt was as follows as of December 31 (dollars in millions):
20202019
AverageAverage
PrincipalCarryingInterestCarryingInterest
AmountValueRateValueRate
First mortgage bonds:
2.95% to 8.53%, due through 2025$2,149 $2,145 4.00 %$2,144 4.00 %
2.70% to 6.71%, due 2026 to 2030900 895 3.50 497 4.14 
5.25% to 7.70%, due 2031 to 2035800 796 6.33 795 6.33 
5.75% to 6.35%, due 2036 to 20392,500 2,485 6.06 2,484 6.06 
4.10% due 2042300 297 4.10 297 4.10 
3.30% to 4.15%, due 2049 to 20511,800 1,776 3.86 1,186 4.14 
Variable-rate series, tax-exempt bond obligations (2020-0.14% to 0.16%; 2019-1.60% to 1.80%):
Due 2020038 1.78 
Due 202525 25 0.14 24 1.75 
Due 2024 to 2025(1)
193 193 0.15 193 1.70 
Total long-term debt$8,667 $8,612 $7,658 

Reflected as:
20202019
Current portion of long-term debt$420 $38 
Long-term debt8,192 7,620 
Total long-term debt$8,612 $7,658 

(1)Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.
PacifiCorp's long-term debt generally includes provisions that allow PacifiCorp to redeem the first mortgage bonds in whole or in part at any time through the payment of a make-whole premium. Variable-rate tax-exempt bond obligations are generally redeemable at par value.

PacifiCorp currently has regulatory authority from the Oregon Public Utility Commission and the Idaho Public Utilities Commission to issue an additional $3.0 billion of long-term debt. PacifiCorp must make a notice filing with the Washington Utilities and Transportation Commission prior to any future issuance. PacifiCorp currently has an effective shelf registration statement filed with the United States Securities and Exchange Commission to issue an indeterminate amount of first mortgage bonds through September 2023.

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The issuance of PacifiCorp's first mortgage bonds is limited by available property, earnings tests and other provisions of PacifiCorp's mortgage. Approximately $30 billion of PacifiCorp's eligible property (based on original cost) was subject to the lien of the mortgage as of December 31, 2020.

As of December 31, 2020, the annual principal maturities of long-term debt for 2021 and thereafter are as follows (in millions):
Long-term
Debt
2021$420 
2022605 
2023449 
2024591 
2025302 
Thereafter6,300 
Total8,667 
Unamortized discount and debt issuance costs(55)
Total$8,612 

(9)Income Taxes

Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
2020 20192018
Current:
Federal$19 $158 $164 
State30 34 40 
Total49 192 204 
Deferred:
Federal(124)(132)(187)
State(9)
Total(123)(128)(196)
Investment tax credits(1)(3)(3)
Total income tax (benefit) expense$(75)$61 $

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
202020192018
Federal statutory income tax rate21 %21 %21 %
State income taxes, net of federal income tax benefit
Effects of ratemaking(22)(13)(17)
Federal income tax credits(13)(3)(7)
Other(1)
Effective income tax rate(11)%%%

Income tax credits relate primarily to production tax credits ("PTC") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for ten years from the date the qualifying generating facilities are placed in-service.
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Effects of ratemaking is primarily attributable to use of excess deferred income taxes of $118 million, $91 million and $127 million for 2020, 2019 and 2018, respectively, to accelerate depreciation of certain retired wind equipment and coal-fueled generating units and to amortize certain regulatory asset balances in accordance with regulatory orders issued in Utah, Oregon, and Idaho.

The net deferred income tax liability consists of the following as of December 31 (in millions):
2020 2019
Deferred income tax assets:
Regulatory liabilities$700 $731 
Employee benefits93 83 
Derivative contracts and unamortized contract values17 33 
State carryforwards73 70 
Loss contingencies63 
Asset retirement obligations65 61 
Other66 65 
1,077 1,046 
Deferred income tax liabilities:
Property, plant and equipment(3,311)(3,312)
Regulatory assets(343)(276)
Other(50)(21)
(3,704)(3,609)
Net deferred income tax liability$(2,627)$(2,563)

The following table provides PacifiCorp's net operating loss and tax credit carryforwards and expiration dates as of December 31, 2020 (in millions):
State
Net operating loss carryforwards$1,138 
Deferred income taxes on net operating loss carryforwards$53 
Expiration dates2023 - 2032
Tax credit carryforwards$20 
Expiration dates2021 - indefinite

The United States Internal Revenue Service has closed or effectively settled its examination of PacifiCorp's income tax returns through December 31, 2013. The statute of limitations for PacifiCorp's state income tax returns have expired through December 31, 2011, with the exception of Utah, for which the statute has expired through December 31, 2009. In addition, Idaho's statute of limitations has expired through December 31, 2016, except for the impact of any federal audit adjustments. The statute of limitations expiring for state filings may not preclude the state from adjusting the state net operating loss carryforward utilized in a year for which the statute of limitations is not closed.

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(10)    Employee Benefit Plans

PacifiCorp sponsors defined benefit pension and other postretirement benefit plans that cover certain of its employees, as well as a defined contribution 401(k) employee savings plan ("401(k) Plan"). In addition, PacifiCorp contributes to a joint trustee pension plan and a subsidiary previously contributed to a multiemployer pension plan for benefits offered to certain bargaining units.

Defined Benefit Plans

PacifiCorp's pension plans include non-contributory defined benefit pension plans, collectively the PacifiCorp Retirement Plan ("Retirement Plan"), and the Supplemental Executive Retirement Plan ("SERP"). The Retirement Plan is closed to all non-union employees hired after January 1, 2008. All non-union Retirement Plan participants hired prior to January 1, 2008 that did not elect to receive equivalent fixed contributions to the 401(k) Plan effective January 1, 2009 earned benefits based on a cash balance formula through December 31, 2016. Effective January 1, 2017, non-union employee participants with a cash balance benefit in the Retirement Plan are no longer eligible to receive pay credits in their cash balance formula. In general for union employees, benefits under the Retirement Plan were frozen at various dates from December 31, 2007 through December 31, 2011 as they are now being provided with enhanced 401(k) Plan benefits. However, certain limited union Retirement Plan participants continue to earn benefits under the Retirement Plan based on the employee's years of service and a final average pay formula. The SERP was closed to new participants as of March 21, 2006 and froze future accruals for active participants as of December 31, 2014.

During 2018, the Retirement Plan incurred a settlement charge of $22 million as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018.

PacifiCorp's other postretirement benefit plan provides healthcare and life insurance benefits to eligible retirees.

Net Periodic Benefit Cost

For purposes of calculating the expected return on plan assets, a market-related value is used. The market-related value of plan assets is calculated by spreading the difference between expected and actual investment returns over a five-year period beginning after the first year in which they occur.

Net periodic benefit cost for the plans included the following components for the years ended December 31 (in millions):
PensionOther Postretirement
202020192018202020192018
Service cost$$$$$$
Interest cost36 44 43 12 11 
Expected return on plan assets(56)(67)(72)(14)(21)(21)
Settlement22 
Net amortization18 11 13 (6)
Net periodic benefit (credit) cost$(2)$(12)$$$(7)$(14)


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Funded Status

The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, beginning of year$1,036 $942 $334 $297 
Employer contributions(1)
Participant contributions
Actual return on plan assets124 181 15 55 
Benefits paid(101)(91)(26)(24)
Plan assets at fair value, end of year$1,064 $1,036 $327 $334 
(1)Amounts represent employer contributions to the SERP.
The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Benefit obligation, beginning of year$1,167 $1,105 $304 $298 
Service cost
Interest cost36 44 12 
Participant contributions
Actuarial loss100 109 14 11 
Benefits paid(101)(91)(26)(24)
Benefit obligation, end of year$1,202 $1,167 $307 $304 
Accumulated benefit obligation, end of year$1,202 $1,167 

The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, end of year$1,064 $1,036 $327 $334 
Less - Benefit obligation, end of year1,202 1,167 307 304 
Funded status$(138)$(131)$20 $30 
Amounts recognized on the Consolidated Balance Sheets:
Other assets$$$20 $30 
Accrued employee expenses(4)(4)
Other long-term liabilities(142)(134)
Amounts recognized$(138)$(131)$20 $30 

The SERP has no plan assets; however, PacifiCorp has a Rabbi trust that holds corporate-owned life insurance and other investments to provide funding for the future cash requirements of the SERP. The cash surrender value of all of the policies included in the Rabbi trust, net of amounts borrowed against the cash surrender value, plus the fair market value of other Rabbi trust investments, was $61 million and $57 million as of December 31, 2020 and 2019, respectively. These assets are not included in the plan assets in the above table, but are reflected in noncurrent other assets as of December 31, 2020 and 2019, respectively, on the Consolidated Balance Sheets.

The projected benefit obligation and the accumulated benefit obligation for the pension plan were both in excess of the fair value of the plan assets as of December 31, 2020.
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Unrecognized Amounts

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
PensionOther Postretirement
2020201920202019
Net loss (gain)$455 $442 $(13)$(26)
Regulatory deferrals
Total$457 $443 $(10)$(20)

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 2020 and 2019 is as follows (in millions):
Accumulated
Other
RegulatoryComprehensive
AssetLossTotal
Pension
Balance, December 31, 2018$443 $17 $460 
Net (gain) loss arising during the year(11)(6)
Net amortization(10)(1)(11)
Total(21)(17)
Balance, December 31, 2019422 21 443 
Net loss arising during the year27 32 
Net amortization(17)(1)(18)
Total10 14 
Balance, December 31, 2020$432 $25 $457 
Regulatory
Asset (Liability)
Other Postretirement
Balance, December 31, 2018$
Net gain arising during the year(25)
Net amortization
Total(25)
Balance, December 31, 2019(20)
Net loss arising during the year13 
Net amortization(3)
Total10 
Balance, December 31, 2020$(10)

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Plan Assumptions

Weighted-average assumptions used to determine benefit obligations and net periodic benefit cost were as follows:
PensionOther Postretirement
202020192018202020192018
Benefit obligations as of December 31:
Discount rate2.50 %3.25 %4.25 %2.50 %3.20 %4.25 %
Rate of compensation increaseN/AN/AN/AN/AN/AN/A
Interest crediting rates for cash balance plan (1)(2)(3)
0.82 %2.27 %3.40 %N/AN/AN/A
Net periodic benefit cost for the years ended December 31:
Discount rate3.25 %4.25 %3.60 %3.20 %4.25 %3.60 %
Expected return on plan assets6.50 7.00 7.00 4.92 6.86 6.86 

(1)2020 Cash Balance Interest Crediting Rate assumption is 0.82% for 2021-2022 and 2.00% for 2023 and all future years for nonunion participants and 1.42% for 2021-2022 and 2.40% for 2023+ for union participants.
(2)2019 Cash Balance Interest Crediting Rate assumption was 2.27% for 2020-2021 and 2.10% for 2022 and all future years for nonunion participants and 2.16% for 2020-2021 and 2.70% for 2022+ for union participants.
(3)2018 Cash Balance Interest Crediting Rate assumption was 3.40% for 2019 and all future years for nonunion participants and 3.15% for 2019-2020 and 3.25% for 2021+ for union participants.
In establishing its assumption as to the expected return on plan assets, PacifiCorp utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.

As a result of a plan amendment effective on January 1, 2017, the benefit obligation for the Retirement Plan is no longer affected by future increases in compensation. As a result of a labor settlement reached with UMWA in December 2014, the benefit obligation for the other postretirement plan is no longer affected by healthcare cost trends.

Contributions and Benefit Payments

Employer contributions to the pension and other postretirement benefit plans are expected to be $4 million and $1 million, respectively, during 2021. Funding to PacifiCorp's Retirement Plan trust is based upon the actuarially determined costs of the plan and the requirements of the Internal Revenue Code, the Employee Retirement Income Security Act of 1974 ("ERISA") and the Pension Protection Act of 2006, as amended ("PPA"). PacifiCorp considers contributing additional amounts from time to time in order to achieve certain funding levels specified under the PPA. PacifiCorp evaluates a variety of factors, including funded status, income tax laws and regulatory requirements, in determining contributions to its other postretirement benefit plan.

The expected benefit payments to participants in PacifiCorp's pension and other postretirement benefit plans for 2021 through 2025 and for the five years thereafter are summarized below (in millions):
Projected Benefit Payments
PensionOther Postretirement
2021$115 $24 
202299 23 
202394 22 
202487 22 
202582 20 
2026-2030341 90 

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Plan Assets

Investment Policy and Asset Allocations

PacifiCorp's investment policy for its pension and other postretirement benefit plans is to balance risk and return through a diversified portfolio of debt securities, equity securities and other alternative investments. Maturities for debt securities are managed to targets consistent with prudent risk tolerances. The plans retain outside investment advisors to manage plan investments within the parameters outlined by the Berkshire Hathaway Energy Company Investment Committee. The investment portfolio is managed in line with the investment policy with sufficient liquidity to meet near-term benefit payments.

In 2020, the assets of the PacifiCorp Master Retirement Trust were transferred into the BHE Master Retirement Trust.

The target allocations (percentage of plan assets) for PacifiCorp's pension and other postretirement benefit plan assets are as follows as of December 31, 2020:
Pension(1)
Other Postretirement(1)
%%
Debt securities(2)
25 - 3575 - 83
Equity securities(2)
53 - 6816 - 24
Limited partnership interests7 - 121 - 3

(1)The trust in which the PacifiCorp Retirement Plan is invested includes a separate account that is used to fund benefits for the other postretirement benefit plan. In addition to this separate account, the assets for the other postretirement benefit plan are held in Voluntary Employees' Beneficiary Association ("VEBA") trusts, each of which has its own investment allocation strategies. Target allocations for the other postretirement benefit plan include the separate account of the Retirement Plan trust and the VEBA trusts.
(2)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.
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Fair Value Measurements
The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit pension plan (in millions):
Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
As of December 31, 2020:
Cash equivalents$$32 $$32 
Debt securities:
United States government obligations14 14 
Corporate obligations231 231 
Municipal obligations21 21 
Equity securities:
United States companies91 91 
Total assets in the fair value hierarchy$105 $284 $389 
Investment funds(2) measured at net asset value
587 
Limited partnership interests(3) measured at net asset value
88 
Investments at fair value$1,064 
As of December 31, 2019:
Cash equivalents$$24 $$24 
Debt securities:
United States government obligations21 21 
Corporate obligations94 94 
Municipal obligations10 10 
Agency, asset and mortgage-backed obligations42 42 
Equity securities:
United States companies355 355 
International companies15 15 
Investment funds(2)
55 55 
Total assets in the fair value hierarchy$446 $170 $616 
Investment funds(2) measured at net asset value
327 
Limited partnership interests(3) measured at net asset value
93 
Investments at fair value$1,036 

(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.
(2)Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 78% and 22%, respectively, for 2020 and 55% and 45%, respectively, for 2019, and are invested in United States and international securities of approximately 74% and 26%, respectively, for 2020 and 51% and 49%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate.
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The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit other postretirement plan (in millions):
Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
As of December 31, 2020:
Cash and cash equivalents$$$$
Debt securities:
United States government obligations11 11 
Corporate obligations86 86 
Municipal obligations16 16 
Agency, asset and mortgage-backed obligations44 44 
Equity securities:
United States companies
Total assets in the fair value hierarchy23 147 170 
Investment funds(2) measured at net asset value
153 
Limited partnership interests(3) measured at net asset value
Investments at fair value$327 
As of December 31, 2019:
Cash and cash equivalents$$$$
Debt securities:
United States government obligations12 12 
Corporate obligations26 26 
Municipal obligations
Agency, asset and mortgage-backed obligations22 22 
Equity securities:
United States companies74 74 
International companies
Investment funds(2)
44 44 
Total assets in the fair value hierarchy142 51 193 
Investment funds(2) measured at net asset value
136 
Limited partnership interests(3) measured at net asset value
Investments at fair value$334 

(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.
(2)Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 38% and 62%, respectively, for 2020 and 56% and 44%, respectively, for 2019, and are invested in United States and international securities of approximately 93% and 7%, respectively, for 2020 and 79% and 21%, respectively, for 2019.
(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.
For level 1 investments, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. For level 2 investments, the fair value is determined using pricing models based on observable market inputs. Shares of mutual funds not registered under the Securities Act of 1933, private equity limited partnership interests, common and commingled trust funds and investment entities are reported at fair value based on the net asset value per unit, which is used for expedience purposes. A fund's net asset value is based on the fair value of the underlying assets held by the fund less its liabilities.

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Multiemployer and Joint Trustee Pension Plans

PacifiCorp contributes to the PacifiCorp/IBEW Local 57 Retirement Trust Fund ("Local 57 Trust Fund") (plan number 001) and its subsidiary, Energy West Mining Company, previously contributed to the UMWA 1974 Pension Plan (plan number 002). Contributions to these pension plans are based on the terms of collective bargaining agreements.

As a result of the Utah Mine Disposition and UMWA labor settlement, PacifiCorp's subsidiary, Energy West Mining Company, triggered involuntary withdrawal from the UMWA 1974 Pension Plan in June 2015 when the UMWA employees ceased performing work for the subsidiary. PacifiCorp recorded its estimate of the withdrawal obligation in December 2014 when withdrawal was considered probable and deferred the portion of the obligation considered probable of recovery to a regulatory asset. PacifiCorp has subsequently revised its estimate due to changes in facts and circumstances for a withdrawal occurring by July 2015. As communicated in a letter received in August 2016, the plan trustees determined a withdrawal liability of $115 million. Energy West Mining Company began making installment payments in November 2016 and has the option to elect a lump sum payment to settle the withdrawal obligation. The ultimate amount paid by Energy West Mining Company to settle the obligation is dependent on a variety of factors, including the results of ongoing negotiations with the plan trustees.

The Local 57 Trust Fund is a joint trustee plan such that the board of trustees is represented by an equal number of trustees from PacifiCorp and the union. The Local 57 Trust Fund was established pursuant to the provisions of the Taft-Hartley Act and although formed with the ability for other employers to participate in the plan, there are no other employers that participate in this plan.

The risk of participating in multiemployer pension plans generally differs from single-employer plans in that assets are pooled such that contributions by one employer may be used to provide benefits to employees of other participating employers and plan assets cannot revert to employers. If an employer ceases participation in the plan, the employer may be obligated to pay a withdrawal liability based on the participants' unfunded, vested benefits in the plan. This occurred as a result of Energy West Mining Company's withdrawal from the UMWA 1974 Pension Plan. If participating employers withdraw from a multiemployer plan, the unfunded obligations of the plan may be borne by the remaining participating employers.

The following table presents PacifiCorp's participation in individually significant joint trustee and multiemployer pension plans for the years ended December 31 (dollars in millions):
PPA zone status or
plan funded status percentage for
plan years beginning July 1,
Contributions(1)
Plan nameEmployer Identification Number202020192018Funding improvement plan
Surcharge imposed under PPA(1)
202020192018
Year contributions to plan exceeded more than 5% of total contributions(2)
Local 57 Trust Fund87-0640888
At least
80%
At least 80%At least 80%NoneNone$$$2018, 2017, 2016

(1)    PacifiCorp's minimum contributions to the plan are based on the amount of wages paid to employees covered by the Local 57 Trust Fund collective bargaining agreements, subject to ERISA minimum funding requirements.

(2)    For the Local 57 Trust Fund, information is for plan years beginning July 1, 2018, 2017 and 2016. Information for the plan year beginning July 1, 2019 is not yet available.

The current collective bargaining agreements governing the Local 57 Trust Fund expire in 2023.

Defined Contribution Plan

PacifiCorp's 401(k) Plan covers substantially all employees. PacifiCorp's matching contributions are based on each participant's level of contribution and, as of January 1, 2020, all participants receive contributions based on eligible pre-tax annual compensation. Contributions cannot exceed the maximum allowable for tax purposes. PacifiCorp's contributions to the 401(k) Plan were $41 million, $40 million and $39 million for the years ended December 31, 2020, 2019 and 2018, respectively.

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(11)Asset Retirement Obligations

PacifiCorp estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.

PacifiCorp does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Consolidated Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. Cost of removal regulatory liabilities totaled $1,125 million and $1,019 million as of December 31, 2020 and 2019, respectively.

The following table reconciles the beginning and ending balances of PacifiCorp's ARO liabilities for the years ended December 31 (in millions):
20202019
Beginning balance$257 $227 
Change in estimated costs(11)27 
Additions25 
Retirements(10)(15)
Accretion
Ending balance$270 $257 
Reflected as:
Other current liabilities$13 $19 
Other long-term liabilities257 238 
$270 $257 

Certain of PacifiCorp's decommissioning and reclamation obligations relate to jointly owned facilities and mine sites. PacifiCorp is committed to pay a proportionate share of the decommissioning or reclamation costs. In the event of a default by any of the other joint participants, PacifiCorp may be obligated to absorb, directly or by paying additional sums to the entity, a proportionate share of the defaulting party's liability. PacifiCorp's estimated share of the decommissioning and reclamation obligations are primarily recorded as ARO liabilities.

(12)Risk Management and Hedging Activities

PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. PacifiCorp does not engage in a material amount of proprietary trading activities.

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PacifiCorp has established a risk management process that is designed to identify, manage and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. No interest rate derivatives were in place during the periods presented. PacifiCorp does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices.

There have been no significant changes in PacifiCorp's accounting policies related to derivatives. Refer to Notes 2 and 13 for additional information on derivative contracts.

The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of PacifiCorp's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions):
OtherOtherOther
CurrentOtherCurrentLong-term
AssetsAssetsLiabilitiesLiabilitiesTotal
As of December 31, 2020:
Not designated as hedging contracts(1):
Commodity assets$29 $$$$36 
Commodity liabilities(2)(23)(28)(53)
Total27 (22)(28)(17)
Total derivatives27 (22)(28)(17)
Cash collateral receivable15 24 
Total derivatives - net basis$27 $$(7)$(19)$
As of December 31, 2019:
Not designated as hedging contracts(1):
Commodity assets$15 $$$$21 
Commodity liabilities(3)(31)(50)(84)
Total12 (27)(50)(63)
Total derivatives12 (27)(50)(63)
Cash collateral receivable20 27 47 
Total derivatives - net basis$12 $$(7)$(23)$(16)
(1)PacifiCorp's commodity derivatives are generally included in rates and as of December 31, 2020 and 2019, a regulatory asset of $17 million and $62 million, respectively, was recorded related to the net derivative liability of $17 million and $63 million, respectively.
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The following table reconciles the beginning and ending balances of PacifiCorp's regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in regulatory assets, as well as amounts reclassified to earnings for the years ended December 31 (in millions):
202020192018
Beginning balance$62 $96 $101 
Changes in fair value recognized in regulatory assets(11)(37)12 
Net gains (losses) reclassified to operating revenue(34)(68)
Net (losses) gains reclassified to energy costs(37)37 51 
Ending balance$17 $62 $96 

Derivative Contract Volumes

The following table summarizes the net notional amounts of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values as of December 31 (in millions):
Unit of
Measure20202019
Electricity salesMegawatt hours(1)(2)
Natural gas purchasesDecatherms100 129 

Credit Risk

PacifiCorp is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent PacifiCorp's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, PacifiCorp analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, PacifiCorp enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, PacifiCorp exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

Collateral and Contingent Features

In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance" if there is a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2020, PacifiCorp's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt from the recognized credit rating agencies were investment grade.

The aggregate fair value of PacifiCorp's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $51 million and $80 million as of December 31, 2020 and 2019, respectively, for which PacifiCorp had posted collateral of $24 million and $47 million, respectively, in the form of cash deposits. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggered as of December 31, 2020 and 2019, PacifiCorp would have been required to post $25 million and $27 million, respectively, of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation or other factors.

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(13)Fair Value Measurements

The carrying value of PacifiCorp's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. PacifiCorp has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:

Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that PacifiCorp has the ability to access at the measurement date.

Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3 - Unobservable inputs reflect PacifiCorp's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. PacifiCorp develops these inputs based on the best information available, including its own data.

The following table presents PacifiCorp's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):
Input Levels for Fair Value Measurements
Level 1Level 2Level 3
Other(1)
Total
As of December 31, 2020:
Assets:
Commodity derivatives$$36 $$(3)$33 
Money market mutual funds(2)
— 
Investment funds25 — 25 
$31 $36 $$(3)$64 
Liabilities - Commodity derivatives$$(53)$— $27 $(26)
As of December 31, 2019:
Assets:
Commodity derivatives$$21 $$(7)$14 
Money market mutual funds (2)
23 — 23 
Investment funds25 — 25 
$48 $21 $$(7)$62 
Liabilities - Commodity derivatives$$(84)$$54 $(30)

(1)Represents netting under master netting arrangements and a net cash collateral receivable of $24 million and $47 million as of December 31, 2020 and 2019, respectively.
(2)Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
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Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first three years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first three years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 12 for further discussion regarding PacifiCorp's risk management and hedging activities.

PacifiCorp's investments in money market mutual funds and investment funds are stated at fair value. When available, PacifiCorp uses a readily observable quoted market price or net asset value of an identical security in an active market to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics.

PacifiCorp's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt as of December 31 (in millions):
20202019
CarryingFairCarryingFair
ValueValueValueValue
Long-term debt$8,612 $10,995 $7,658 $9,280 

(14)Commitments and Contingencies

Legal Matters

PacifiCorp is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. PacifiCorp does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.

California and Oregon 2020 Wildfires

In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and Northern California. The wildfires spread across certain parts of PacifiCorp's service territory and surrounding areas across multiples counties in Oregon and California, including Siskiyou County, California; Jackson County, Oregon; Douglas County, Oregon; Marion County, Oregon; Lincoln County, Oregon; and Klamath County, Oregon burning over 500,000 acres in aggregate. Third party reports for these wildfires indicate over 2,000 structures, including residences, destroyed; several structures damaged; multiple individuals injured; and several fatalities. Fire suppression costs estimated by various agencies total approximately $150 million. Investigations into the cause and origin of each wildfire are complex and ongoing and are being conducted by various entities, including the United States Forest Service, the California Public Utilities Commission, the Oregon Department of Forestry, the Oregon Department of Justice, PacifiCorp and various experts engaged by PacifiCorp.
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NaN lawsuits have been filed in Oregon and California, including a putative class action complaint in Oregon, on behalf of citizens and businesses who suffered damages from fires allegedly caused by PacifiCorp. The final determinations of liability, however, will only be made following comprehensive investigations and litigation processes.

In California, under inverse condemnation, courts have held that investor-owned utilities can be liable for real and personal property damages without the utility being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover reasonable attorney fees and costs. In both Oregon and California, PacifiCorp has equipment in areas accessed through special use permits, easements or similar agreements that may contain provisions requiring it to pay for damages caused by its equipment regardless of fault. Even if inverse condemnation or other provisions do not apply, PacifiCorp could nevertheless be found liable for all damages proximately caused by negligence, including property and natural resource damage; fire suppression costs; personal injury and loss of life damages; and interest.

PacifiCorp has accrued $136 million as its best estimate of the potential losses net of expected insurance recoveries associated with the 2020 Wildfires that are considered probable of being incurred. These accruals include estimated losses for fire suppression costs, property damage, personal injury damages and loss of life damages. It is reasonably possible that PacifiCorp will incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred due to the number of properties and parties involved and the lack of specific claims for all potential claimants. To the extent losses beyond the amounts accrued are incurred, additional insurance coverage is expected to be available to cover at least a portion of the losses.
Environmental Laws and Regulations

PacifiCorp is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. PacifiCorp believes it is in material compliance with all applicable laws and regulations.

Hydroelectric Relicensing

PacifiCorp is a party to the 2016 amended Klamath Hydroelectric Settlement Agreement ("KHSA"), which is intended to resolve disputes surrounding PacifiCorp's efforts to relicense the Klamath Hydroelectric Project. The KHSA establishes a process for PacifiCorp, the states of Oregon and California ("States") and other stakeholders to assess whether dam removal can occur consistent with the settlement's terms. For PacifiCorp, the key elements of the settlement include: (1) a contribution from PacifiCorp's Oregon and California customers capped at $200 million plus $250 million in California bond funds; (2) complete indemnification from harms associated with dam removal; (3) transfer of the Federal Energy Regulatory Commission ("FERC") license to a third-party dam removal entity, the Klamath River Renewal Corporation ("KRRC"), who would conduct dam removal; and (4) ability for PacifiCorp to operate the facilities for the benefit of customers until dam removal commences.

In September 2016, the KRRC and PacifiCorp filed a joint application with the FERC to transfer the license for the four mainstem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in a July 2020 order, subject to the condition that PacifiCorp remains co-licensee. Under the amended KHSA, PacifiCorp did not agree to remain co-licensee during the surrender and removal process given concerns about liability protections for PacifiCorp and its customers. In November 2020, PacifiCorp entered a memorandum of agreement (the "MOA") with the KRRC, the Karuk Tribe, the Yurok Tribe and the States to continue implementation of the KHSA. The agreement required the States, PacifiCorp and KRRC to file a new license transfer application by January 16, 2021 to remove PacifiCorp from the license for the Klamath Hydroelectric Project and add the States and KRRC as co-licensees for the purposes of surrender. On January 13, 2021, the new license transfer application was filed with the FERC, notifying it that PacifiCorp and the KRRC are not accepting co-licensee status under FERC's July 2020 order, and instead are seeking the license transfer outcome described in the new license transfer application. In addition, the MOA provides for additional contingency funding of $45 million, equally split between PacifiCorp and the States, and for PacifiCorp and the States to equally share in any additional cost overruns in the unlikely event that dam removal costs exceed the $450 million in funding to ensure dam removal is complete. The MOA also requires PacifiCorp to cover the costs associated with certain pre-existing environmental conditions.

As of December 31, 2020, PacifiCorp's assets included $21 million of costs associated with the Klamath hydroelectric system's mainstem dams and the associated relicensing and settlement costs, which are being depreciated and amortized in accordance with state regulatory approvals in Utah, Wyoming and Idaho through December 31, 2022.

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Hydroelectric Commitments

Certain of PacifiCorp's hydroelectric licenses contain requirements for PacifiCorp to make certain capital and operating expenditures related to its hydroelectric facilities, which are estimated to be approximately $182 million over the next ten years.

Commitments

PacifiCorp has the following firm commitments that are not reflected on the Consolidated Balance Sheet. Minimum payments as of December 31, 2020 are as follows (in millions):
202120222023202420252026 and ThereafterTotal
Contract type:
Purchased electricity contracts -
commercially operable$223 $201 $195 $192 $172 $2,028 $3,011 
Purchased electricity contracts -
non-commercially operable25 25 25 26 28 456 585 
Fuel contracts636 426 368 320 137 611 2,498 
Construction commitments90 90 
Transmission104 97 90 74 49 409 823 
Easements14 14 13 13 13 278 345 
Maintenance, service and
other contracts100 69 40 35 36 214 494 
Total commitments$1,192 $832 $731 $660 $435 $3,996 $7,846 
    Purchased Electricity Contracts - Commercially Operable

As part of its energy resource portfolio, PacifiCorp acquires a portion of its electricity through long-term purchases and exchange agreements. PacifiCorp has several PPAs with solar or wind-powered generating facilities that are not included in the table above as the payments are based on the amount of energy generated and there are no minimum payments. Certain of these PPAs qualify as leases as described in Note 2. Refer to Note 5 for variable lease costs associated with these lease commitments.

Included in the minimum fixed annual payments for purchased electricity above are commitments to purchase electricity from several hydroelectric systems under long-term arrangements with public utility districts. These purchases are made on a "cost-of-service" basis for a stated percentage of system output and for a like percentage of system operating expenses and debt service. These costs are included in energy costs on the Consolidated Statements of Operations. PacifiCorp is required to pay its portion of operating costs and its portion of the debt service, whether or not any electricity is produced. These arrangements accounted for less than 5% of PacifiCorp's 2020, 2019 and 2018 energy sources.

    Purchased Electricity Contracts - Non-commercially Operable

PacifiCorp has several contracts for purchases of electricity from facilities that have not yet achieved commercial operation. To the extent any of these facilities do not achieve commercial operation, PacifiCorp has no obligation to the counterparty.

    Fuel Contracts

PacifiCorp has "take or pay" coal and natural gas contracts that require minimum payments.

    Construction Commitments

PacifiCorp's construction commitments included in the table above relate to firm commitments and include costs associated with certain generating plant, transmission, and distribution projects.

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    Transmission

PacifiCorp has contracts for the right to transmit electricity over other entities' transmission lines to facilitate delivery to PacifiCorp's customers.
    Easements

PacifiCorp has non-cancelable easements for land on which certain of its assets, primarily wind-powered generating facilities, are located.

Guarantees

PacifiCorp has entered into guarantees as part of the normal course of business and the sale or transfer of certain assets. These guarantees are not expected to have a material impact on PacifiCorp's consolidated financial results.


(14)(15)Revenue from Contracts with Customers

The following table summarizes PacifiCorp's revenue by regulated energy, with further disaggregation of regulated energy by customer class, for the years ended December 31 (in millions):
202020192018
Customer Revenue:
Retail:
Residential$1,910 $1,783 $1,737 
Commercial1,578 1,522 1,513 
Industrial1,185 1,176 1,172 
Other retail259 230 234 
Total retail4,932 4,711 4,656 
Wholesale107 99 55 
Transmission96 98 103 
Other Customer Revenue108 78 76 
Total Customer Revenue5,243 4,986 4,890 
Other revenue98 82 136 
Total operating revenue$5,341 $5,068 $5,026 

(16)Preferred Stock


PacifiCorp has 3,500 thousand shares of Serial Preferred Stock authorized at the stated value of $100 per share. PacifiCorp had 24 thousand shares of Serial Preferred Stock issued and outstanding as of December 31, 20172020 and 2016.2019. The outstanding preferred stock series are non-redeemable and have annual dividend rates of 6.00% and 7.00%.


In the event of voluntary liquidation, all preferred stock is entitled to stated value or a specified preference amount per share plus accrued dividends. Upon involuntary liquidation, all preferred stock is entitled to stated value plus accrued dividends. Dividends on all preferred stock are cumulative. Holders also have the right to elect members to the PacifiCorp Board of Directors in the event dividends payable are in default in an amount equal to four4 full quarterly payments.


PacifiCorp also has 16 million shares of No Par Serial Preferred Stock and 127 thousand shares of 5% Preferred Stock authorized, but no shares were issued or outstanding as of December 31, 20172020 and 2016.2019.


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(15)


(17)Common Shareholder's Equity

In February 2018, PacifiCorp declared a dividend of $250 million payable to PPW Holdings LLC, a wholly owned subsidiary of BHE and PacifiCorp's direct parent company ("PPW Holdings") in March 2018.


Through PPW Holdings, BHE is the sole shareholder of PacifiCorp's common stock. The state regulatory orders that authorized BHE's acquisition of PacifiCorp contain restrictions on PacifiCorp's ability to pay dividends to the extent that they would reduce PacifiCorp's common equity below specified percentages of defined capitalization. As of December 31, 2017,2020, the most restrictive of these commitments prohibits PacifiCorp from making any distribution to PPW Holdings or BHE without prior state regulatory approval to the extent that it would reduce PacifiCorp's common equity below 44% of its total capitalization, excluding short-term debt and current maturities of long-term debt. The terms of this commitment treat 50% of PacifiCorp's remaining balance of preferred stock in existence prior to the acquisition of PacifiCorp by BHE as common equity. As of December 31, 2017,2020, PacifiCorp's actual common equity percentage, as calculated under this measure, was 54%53%, and PacifiCorp would have been permitted to dividend $2.5$2.7 billion under this commitment.


These commitments also restrict PacifiCorp from making any distributions to either PPW Holdings or BHE if PacifiCorp's senior unsecured debt rating is BBB- or lower by Standard & Poor's Rating Services or Fitch Ratings, or Baa3 or lower by Moody's Investor Service, as indicated by two of the three rating services. As of December 31, 2017,2020, PacifiCorp met the minimum required senior unsecured debt ratings for making distributions.


PacifiCorp is also subject to a maximum debt-to-total capitalization percentage under various financing agreements as further discussed in Note 6.7.


(16)(18)    Components of Accumulated Other Comprehensive Loss, Net


Accumulated other comprehensive loss, net consists of unrecognized amounts on retirement benefits, net of tax, of $15$19 million and $12$16 million as of December 31, 20172020 and 2016,2019, respectively.



(17)
(19)Variable-Interest Entities


PacifiCorp holds a two-thirds66.67% interest in Bridger Coal Company ("Bridger Coal"), which supplies coal to the Jim Bridger generating facility that is owned two-thirds66.67% by PacifiCorp and one-third33.33% by PacifiCorp's joint venture partner in Bridger Coal. PacifiCorp purchases two-thirds66.67% of the coal produced by Bridger Coal, while the remaining 33.33% of the coal produced is purchased by the joint venture partner. The power to direct the activities that most significantly impact Bridger Coal's economic performance are shared with the joint venture partner. Each joint venture partner is jointly and severally liable for the obligations of Bridger Coal. Bridger Coal's necessary working capital to carry out its mining operations is financed by contributions from PacifiCorp and its joint venture partner. PacifiCorp's equity investment in Bridger Coal was $137$74 million and $165$81 million as of December 31, 20172020 and 2016,2019, respectively. Refer to Note 1821 for information regarding related-party transactions with Bridger Coal.


(18)(20)Supplemental Cash Flow Disclosures

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and 2019, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
20202019
Cash and cash equivalents$13 $30 
Restricted cash included in other current assets
Restricted cash included in other assets
Total cash and cash equivalents and restricted cash and cash equivalents$19 $36 
254


The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202020192018
Interest paid, net of amounts capitalized$348 $340 $347 
Income taxes paid, net$107 $171 $144 
Supplemental disclosure of non-cash investing and financing activities:
Accounts payable related to property, plant and equipment additions$344 $293 $184 

(21)Related-Party Transactions


PacifiCorp has an intercompany administrative services agreement and a mutual assistance agreement with BHE and its subsidiaries. Amounts charged to PacifiCorp by BHE and its subsidiaries under this agreement totaled $11$10 million, $10 million and $12 million during the yearyears ended December 31, 2017,2020, 2019 and $10 million during each of the years ended 2016 and 2015.2018, respectively. Payables associated with these administrative services were $2$5 million and $1 million as of December 31, 20172020 and 2016,2019, respectively. Amounts charged by PacifiCorp to BHE and its subsidiaries under this agreement totaled $3 million, $4 million, $1 million and $7$2 million during the years ended December 31, 2017, 20162020, 2019 and 2015, respectively. Receivables associated with these administrative services were $1 million as of December 31, 2017 and 2016,2018, respectively.


In 2020, PacifiCorp acquired wind turbines from BHE Wind, LLC, an indirect wholly owned subsidiary of BHE, for $147 million. The wind turbines are being installed as part of newly constructed and repowered wind-powered generating facilities that are being placed in service through 2021.

PacifiCorp also engages in various transactions with several subsidiaries of BHE in the ordinary course of business. Services provided by these subsidiaries in the ordinary course of business and charged to PacifiCorp primarily relate to wholesale electricity purchases and transmission of electricity, transportation of natural gas and employee relocation services. These expenses totaled $6 million, $7 million and $8 million during the years ended December 31, 2017, 20162020, 2019 and 2015, respectively. Payables associated with these services were $1 million as of December 31, 2017 and 2016, respectively. Amounts charged by PacifiCorp to subsidiaries of BHE for wholesale electricity sales in the ordinary course of business totaled $1 million, $1 million and $2 million during the years ended December 31, 2017, 2016 and 2015,2018, respectively.


PacifiCorp has long-term transportation contracts with BNSF Railway Company ("BNSF"), an indirect wholly owned subsidiary of Berkshire Hathaway, PacifiCorp's ultimate parent company. Transportation costs under these contracts were $29 million, $35 million $37 million and $39$33 million during the years ended December 31, 2017, 20162020, 2019 and 2015,2018, respectively. As of December 31, 2017 and 2016, PacifiCorp had $3 million and $1 million, respectively, of accounts payable to BNSF outstanding under these contracts, including indirect payables related to a jointly owned facility.


PacifiCorp is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. Federal and state income taxes were $25 million receivable from BHE were $59and $31 million and $17 millionpayable to BHE, as of December 31, 20172020 and 2016,2019, respectively. For the years ended December 31, 2017, 20162020, 2019 and 2015,2018, cash paid for federal and state income taxes to BHE totaled $340$107 million, $201$171 million and $40$144 million, respectively.


PacifiCorp transacts with its equity investees, Bridger Coal and Trapper Mining Inc. During the years ended December 31, 2017, 2016 and 2015, PacifiCorp charged Bridger Coal $2 million, $2 million and $19 million, respectively, primarily for the sale of mining equipment in 2015, administrative support and management services, as well as materials, provided by PacifiCorp to Bridger Coal. Receivables for these services, as well as for certain expenses paid by PacifiCorp and reimbursed by Bridger Coal, were $5 million and $5 million as of December 31, 2017 and 2016, respectively. Services provided by equity investees to PacifiCorp primarily relate to coal purchases. During the years ended December 31, 2017, 20162020, 2019 and 2015,2018, coal purchases from PacifiCorp's equity investees totaled $170$145 million, $174$155 million and $181$163 million, respectively. Payables to PacifiCorp's equity investees were $18$14 million and $17$12 million as of December 31, 20172020 and 2016,2019, respectively.


(19)Supplemental Cash Flow Disclosures

The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
255
  2017 2016 2015
       
Interest paid, net of amounts capitalized $350
 $350
 $342
Income taxes paid, net $340
 $201
 $40


Supplemental disclosure of non-cash investing and financing activities:
Accounts payable related to property, plant and equipment additions $147
 $101
 $147
Accounts receivable related to property, plant and equipment sales $
 $
 $40

MidAmerican Funding, LLC and its subsidiaries and MidAmerican Energy Company
Consolidated Financial Section

256
Item 6.Selected Financial Data



Item 6.        Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.


Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations
General

MidAmerican Funding is an Iowa limited liability company whose sole member is BHE. MidAmerican Funding owns all of the outstanding common stock of MHC, which owns all of the common stock of MidAmerican Energy, Midwest Capital and MEC Construction. MHC, MidAmerican Funding and BHE are headquartered in Des Moines, Iowa.

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of MidAmerican Funding and its subsidiaries and MidAmerican Energy as presented in this joint filing.during the periods included herein. Information in Management's Discussion and Analysis related to MidAmerican Energy, whether or not segregated, also relates to MidAmerican Funding. Information related to other subsidiaries of MidAmerican Funding pertains only to the discussion of the financial condition and results of operations of MidAmerican Funding. Where necessary, discussions have been segregated under the heading "MidAmerican Funding" to allow the reader to identify information applicable only to MidAmerican Funding. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with theMidAmerican Funding's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements and MidAmerican Energy's historical Financial Statements and Notes to Financial Statements each in Item 8 of this Form 10-K. MidAmerican Energy'sFunding's and MidAmerican Funding'sEnergy's actual results in the future could differ significantly from the historical results.



Results of Operations


Overview


MidAmerican Energy -


MidAmerican Energy's net income for 20172020 was $605$826 million, an increase of $63$33 million, or 12%4%, compared to 2016, including $7 million of net expense as a result of the Tax Cuts and Jobs Act enacted on December 22, 2017 (the "2017 Tax Reform"). Excluding the net effect of the 2017 Tax Reform, adjusted net income for 2017 was $612 million, an increase of $70 million, or 13%, compared to 2016. The increase was2019 primarily due to a higher income tax benefit of $199 million from additional production tax creditshigher PTCs recognized of $38$132 million, lower pretax income of $166 million and the effects of ratemaking, and lower pre-tax income,operations and maintenance expenses, partially offset by higher depreciation and amortization expense of $77 million, lower allowances for equity and borrowed funds used during construction of $45 million, higher interest expense of $23 million and lower electric and natural gas utility margins. Higher PTCs recognized were due to greater wind-powered generation driven primarily by repowering and new wind projects placed in-service in 2019. Depreciation and amortization expense increased due to additional assets placed in-service in 2019 and 2020, partially offset by $23 million of lower Iowa revenue sharing accruals. Electric utility margin decreased due to lower wholesale revenue and the price impacts from changes in retail sales mix, partially offset by lower generation costs from higher wind generation, higher retail customer volumes and higher electric gross marginsrecoveries related to the ratemaking treatment of $76 million, excluding2017 Tax Reform. Electric retail customer volumes increased 1.2% due to increased usage for certain industrial customers, partially offset by the impacts of COVID-19, which resulted in lower commercial and industrial customer usage and higher residential customer usage. Natural gas utility margin decreased primarily due to 10.2% lower retail customer volumes mainly from the unfavorable impact of weather.

MidAmerican Energy's net income for 2019 was $793 million, an increase inof $111 million, or 16%, compared to 2018 due to a higher income tax benefit of $116 million from higher PTCs of $70 million and the effects of ratemaking, higher electric DSM program revenue (offset in operating expense)utility margin of $22$42 million, higher allowances for equity and borrowed funds of $32 million and higher investment earnings of $20 million, partially offset by higher maintenanceinterest expense of $52$54 million due to additional wind-powered generating facilities and the timing of fossil-fueled generation maintenance, higher depreciation and amortization expense of $21$30 million due to wind-powered generation and other plant placed in-service and accruals for Iowa regulatory arrangements, partially offset by a December 2016 reduction in depreciation rates, and higher property and other taxes$46 million of $7 million.lower Iowa revenue sharing. Electric gross marginsutility margin increased due to lower fuel costs from higher wind generation, higher recoveries through bill riders (substantially offset in cost of fuel and energy, operations and maintenance expense and income tax benefit) and higher retail customer volumes, higher wholesale revenue and higher transmission revenue, partially offset by higher coal and purchased power costs. Retailvolumes. Electric retail customer volumes increased 2.4% due to1.4% as an increase in industrial growth netvolumes of 4.0% was largely offset by lower residential and commercial volumes from milder temperatures.

MidAmerican Energy's income from continuing operationsthe less favorable impact of $542 million for 2016 increased $96 million, or 22%, compared to 2015 due to higher electric margins of $172 million, higher production tax credits of $39 millionweather and lower fossil-fueled generation operations and maintenance of $35 million, partially offset by higher depreciation and amortization of $72 million from wind-powered generation and other plant placed in service and an accrual related to an Iowa revenue sharing arrangement, higher operations costs recovered through bill riders of $20 million, higher interest expense of $13 million primarily due to the issuance of first mortgage bonds in October 2015 and a lower income tax benefit due to higher pre-tax income and the effects of ratemaking. Electric margins reflect higher retail rates in Iowa, higher retail sales volumes, lower energy costs, higher wholesale revenue and higher transmission revenue.overall customer usage.


MidAmerican Funding -


MidAmerican Funding's net income for 20172020 was $574$818 million, an increase of $42$37 million, or 8%5%, compared to 2016, including after-tax charges of $17 million related to the tender offer of a portion of its 6.927% Senior Bonds due 2029 and $10 million of net expense as a result of the 2017 Tax Reform. Excluding the net effect of the 2017 Tax Reform and the tender offer,2019. MidAmerican Funding's adjusted net income for 20172019 was $601$781 million, an increase of $69$112 million, or 13%17%, compared to 2016. MidAmerican Funding's income from continuing operations for 2016 was $532 million, an increase of $90 million, or 20%, compared to 2015. In addition2018. The increases were primarily due to the changes in MidAmerican Energy's earnings discussed above, MidAmerican Funding,above.


257


Non-GAAP Financial Measure

Management utilizes various key financial measures that are prepared in 2015, recognized an $8 million after-tax gain on the sale of an investment in a generating facility lease.


Regulated Electric Gross Margin

Operating revenueaccordance with GAAP, as well as non-GAAP financial measures such as, electric utility margin and cost of fuel, energy and capacity are the key drivers of MidAmerican Energy's regulated electricnatural gas utility margin, to help evaluate results of operationsoperations. Electric utility margin is calculated as they encompass retail and wholesale electricity revenue and the direct costs associated with providing electricity to customers. MidAmerican Energy believes that a discussion of gross margin, representingregulated electric operating revenue less cost of fuel and energy, which are captions presented on the Statements of Operations. Natural gas utility margin is calculated as regulated natural gas operating revenue less cost of natural gas purchased for resale, which are included in regulated natural gas and other and cost of natural gas purchased for resale and other, respectively, on the Statements of Operations.

MidAmerican Energy's cost of fuel and energy and capacity,cost of natural gas purchased for resale are generally recovered from its retail customers through regulatory recovery mechanisms and, as a result, changes in MidAmerican Energy's expenses included in regulatory recovery mechanisms result in comparable changes to revenue. As such, management believes electric utility margin and natural gas utility margin more appropriately and concisely explain profitability rather than a discussion of revenue and cost of sales separately. Management believes the presentation of electric utility margin and natural gas utility margin provides meaningful and valuable insight into the information management considers important to running the business and a measure of comparability to others in the industry.

Electric utility margin and natural gas utility margin are not measures calculated in accordance with GAAP and should be viewed as a supplement to, and not a substitute for, operating income, which is thereforethe most directly comparable financial measure prepared in accordance with GAAP. The following table provides a reconciliation of utility margin to operating income for the years ended December 31 (in millions):
20202019Change20192018Change
Electric utility margin:
Operating revenue$2,139 $2,237 $(98)(4)%$2,237 $2,283 $(46)(2)%
Cost of fuel and energy339 399 (60)(15)399 487 (88)(18)
Electric utility margin1,800 1,838 (38)(2)%1,838 1,796 42 %
Natural gas utility margin:
Operating revenue573 660 (87)(13)%660 754 (94)(12)%
Natural gas purchased for resale327 395 (68)(17)395 465 (70)(15)
Natural gas utility margin246 265 (19)(7)%265 289 (24)(8)%
Utility margin$2,046 $2,103 $(57)(3)%$2,103 $2,085 $18 %
Other operating revenue28 (20)(71)%28 12 16 133 %
Other cost of sales18 (17)(94)18 17 *
Operations and maintenance754 800 (46)(6)800 811 (11)(1)
Depreciation and amortization716 639 77 12 639 609 30 
Property and other taxes135 126 126 125 
Operating income$448 $548 $(100)(18)%$548 $551 $(3)(1)%

*    Not meaningful.


258


Electric Utility Margin

A comparison of key operating results related to regulated electric grossutility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue$2,139 $2,237 $(98)(4)%$2,237 $2,283 $(46)(2)%
Cost of fuel and energy339 399 (60)(15)399 487 (88)(18)
Utility margin$1,800 $1,838 $(38)(2)%$1,838 $1,796 $42 %
Sales (GWhs):
Residential6,687 6,575 112 %6,575 6,763 (188)(3)%
Commercial3,707 3,921 (214)(5)3,921 3,897 24 
Industrial14,645 14,127 518 14,127 13,587 540 
Other1,484 1,578 (94)(6)1,578 1,604 (26)(2)
Total retail26,523 26,201 322 26,201 25,851 350 
Wholesale11,219 10,000 1,219 12 10,000 11,181 (1,181)(11)
Total sales37,742 36,201 1,541 %36,201 37,032 (831)(2)%
Average number of retail customers (in thousands)7957869%7867806%
Average revenue per MWh:
Retail$72.57 $74.01 $(1.44)(2)%$74.01 $74.12 $(0.11)— %
Wholesale$11.08 $21.84 $(10.76)(49)%$21.84 $25.63 $(3.79)(15)%
Heating degree days5,932 6,661 (729)(11)%6,661 6,627 34 %
Cooling degree days1,172 1,152 20 %1,152 1,307 (155)(12)%
Sources of energy (GWhs)(1):
Wind and other(2)
20,668 16,136 4,532 28 %16,136 13,627 2,509 18 %
Coal7,217 12,182 (4,965)(41)12,182 15,811 (3,629)(23)
Nuclear3,927 3,849 78 3,849 3,869 (20)(1)
Natural gas675 441 234 53 441 661 (220)(33)
Total energy generated32,487 32,608 (121)— 32,608 33,968 (1,360)(4)
Energy purchased5,979 4,292 1,687 39 4,292 3,837 455 12 
Total38,466 36,900 1,566 %36,900 37,805 (905)(2)%
Average cost of energy per MWh:
Energy generated(3)
$4.74 $7.53 $(2.79)(37)%$7.53 $9.38 $(1.85)(20)%
Energy purchased$30.94 $35.82 $(4.88)(14)%$35.82 $43.72 $(7.90)(18)%
 2017 2016 Change 2016 2015 Change
Gross margin (in millions):               
Operating revenue$2,108
 $1,985
 $123
 6 % $1,985
 $1,837
 $148
 8 %
Cost of fuel, energy and capacity(1)
434
 409
 25
 6
 409
 433
 (24) (6)
Gross margin$1,674
 $1,576
 $98
 6
 $1,576
 $1,404
 $172
 12
                
Sales (GWh):               
Residential6,207
 6,408
 (201) (3)% 6,408
 6,166
 242
 4 %
Commercial3,761
 3,812
 (51) (1) 3,812
 3,806
 6
 
Industrial12,957
 12,115
 842
 7
 12,115
 11,487
 628
 5
Other1,567
 1,589
 (22) (1) 1,589
 1,583
 6
 
Total retail24,492
 23,924
 568
 2
 23,924
 23,042
 882
 4
Wholesale9,165
 8,489
 676
 8
 8,489
 8,741
 (252) (3)
Total sales33,657
 32,413
 1,244
 4
 32,413
 31,783
 630
 2
                
Average number of retail customers (in thousands)770
 760
 10
 1 % 760
 752
 8
 1 %
                
Average revenue per MWh:               
Retail$73.88
 $71.86
 $2.02
 3 % $71.86
 $69.68
 $2.18
 3 %
Wholesale$23.42
 $22.95
 $0.47
 2 % $22.95
 $20.09
 $2.86
 14 %
                
Heating degree days5,492
 5,321
 171
 3 % 5,321
 5,654
 (333) (6)%
Cooling degree days1,117
 1,314
 (197) (15)% 1,314
 1,067
 247
 23 %
                
Sources of energy (GWh)(1):
               
Coal13,598
 13,179
 419
 3 % 13,179
 15,525
 (2,346) (15)%
Wind and other(2)
12,932
 11,684
 1,248
 11
 11,684
 9,606
 2,078
 22
Nuclear3,850
 3,912
 (62) (2) 3,912
 3,885
 27
 1
Natural gas360
 556
 (196) (35) 556
 199
 357
 179
Total energy generated30,740
 29,331
 1,409
 5
 29,331
 29,215
 116
 
Energy purchased3,603
 3,882
 (279) (7) 3,882
 3,194
 688
 22
Total34,343
 33,213
 1,130
 3
 33,213
 32,409
 804
 2


(1)    GWh amounts are net of energy used by the related generating facilities.

(1)GWh amounts are net of energy used by the related generating facilities.

(2)All or some of the renewable energy attributes associated with generation from these generating facilities may be: (a) used in future years to comply with renewable portfolio standards or other regulatory requirements or (b) sold to third parties in the form of renewable energy credits or other environmental commodities.



(2)    All or some of the renewable energy attributes associated with generation from these sources may be: (a) used in future years to comply with RPS or other regulatory requirements or (b) sold to third parties in the form of RECs or other environmental commodities.
For 2017 compared to 2016, regulated electric gross margin increased $98 million primarily due to:
(1)Higher retail gross margin of $51 million due to -
an increase(3)    The average cost per MWh of $73 million from higher recoveries through bill riders, including $22 million of electric DSM program revenue (offset in operating expense);
an increase of $32 million from non-weather-related usage factors, including higher industrial sales volumes; partially offset by
a decrease of $33 million from higher retail energy costs primarily due to higher coal-fueled generation and higher purchased power costs; and
a decrease of $21 million fromgenerated includes only the impact of milder temperatures;
(2)Higher wholesale gross margin of $32 million due to higher margins per unit from higher market prices, greater availability of lower cost generation for wholesale purposes and higher sales volumes; and
(3)Higher Multi-Value Projects ("MVP") transmission revenue of $13 million due to continued capital additions.

For 2016 compared to 2015, regulated electric gross margin increased $172 million primarily due to:
(1)Higher retail gross margin of $118 million due to -
an increase of $47 million from higher electric rates in Iowa effective January 1, 2016, for the third step of a 2014 Iowa rate increase;
an increase of $33 million primarily from non-weather-related usage factors, including higher industrial sales volumes;
an increase of $27 million from the impact of temperatures;
an increase of $13 million from lower retail energy costs due to a lower average cost of fuel for generation and lower coal-fueled generation; partially offset byassociated with the generating facilities.
a decrease of $2 million from lower recoveries through bill riders;
(2)Higher wholesale gross margin of $37 million due to higher margins per unit from greater availability of lower cost generation for wholesale purposes, partially offset by lower sales volumes attributable to lower coal-fueled generation; and
(3)Higher MVP transmission revenue of $17 million, which is expected to increase as projects are constructed.



259


RegulatedNatural Gas GrossUtility Margin

Operating revenue and cost of gas sold are the key drivers of MidAmerican Energy's regulated gas results of operations as they encompass retail and wholesale natural gas revenue and the direct costs associated with providing natural gas to customers. MidAmerican Energy believes that a discussion of gross margin, representing operating revenue less cost of gas sold, is therefore meaningful.


A comparison of key operating results related to regulatednatural gas grossutility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue$573 $660 $(87)(13)%$660 $754 $(94)(12)%
Natural gas purchased for resale327 395 (68)(17)395 465 (70)(15)
Utility margin$246 $265 $(19)(7)%$265 $289 $(24)(8)%
Throughput (000's Dths):
Residential51,023 56,101 (5,078)(9)%56,101 54,798 1,303 %
Commercial23,336 27,333 (3,997)(15)27,333 26,382 951 
Industrial5,275 5,258 17 — 5,258 5,777 (519)(9)
Other74 77 (3)(4)77 48 29 60 
Total retail sales79,708 88,769 (9,061)(10)88,769 87,005 1,764 
Wholesale sales34,691 36,886 (2,195)(6)36,886 39,267 (2,381)(6)
Total sales114,399 125,655 (11,256)(9)125,655 126,272 (617)— 
Natural gas transportation service110,263 112,143 (1,880)(2)112,143 102,198 9,945 10 
Total throughput224,662 237,798 (13,136)(6)%237,798 228,470 9,328 %
Average number of retail customers (in thousands)774 766 %766 759 %
Average revenue per retail Dth sold$5.91 $6.03 $(0.12)(2)%$6.03 $6.89 $(0.86)(12)%
Heating degree days6,253 6,980 (727)(10)%6,980 6,843 137 %
Average cost of natural gas per retail Dth sold$3.29 $3.47 $(0.18)(5)%$3.47 $4.02 $(0.55)(14)%
Combined retail and wholesale average cost of natural gas per Dth sold$2.86 $3.14 $(0.28)(9)%$3.14 $3.69 $(0.55)(15)%
 2017 2016 Change 2016 2015 Change
Gross margin (in millions):               
Operating revenue$719
 $637
 $82
 13 % $637
 $661
 $(24) (4)%
Cost of gas sold441
 367
 74
 20
 367
 397
 (30) (8)
Gross margin$278
 $270
 $8
 3
 $270
 $264
 $6
 2
                
Natural gas throughput (000's Dths):               
Residential46,366
 46,020
 346
 1 % 46,020
 46,519
 (499) (1)%
Commercial23,434
 23,345
 89
 
 23,345
 23,466
 (121) (1)
Industrial4,725
 5,079
 (354) (7) 5,079
 4,833
 246
 5
Other38
 37
 1
 3
 37
 37
 
 
Total retail sales74,563
 74,481
 82
 
 74,481
 74,855
 (374) 
Wholesale sales39,735
 38,813
 922
 2
 38,813
 35,250
 3,563
 10
Total sales114,298
 113,294
 1,004
 1
 113,294
 110,105
 3,189
 3
Gas transportation service92,136
 83,610
 8,526
 10
 83,610
 80,001
 3,609
 5
Total natural gas throughput206,434
 196,904
 9,530
 5
 196,904
 190,106
 6,798
 4
                
Average number of retail customers (in thousands)751
 742
 9
 1 % 742
 733
 9
 1 %
Average revenue per retail Dth sold$7.64
 $6.85
 $0.79
 12 % $6.85
 $7.12
 $(0.27) (4)%
Average cost of natural gas per retail Dth sold$4.41
 $3.70
 $0.71
 19 % $3.70
 $4.03
 $(0.33) (8)%
                
Combined retail and wholesale average cost of natural gas per Dth sold$3.86
 $3.24
 $0.62
 19 % $3.24
 $3.61
 $(0.37) (10)%
                
Heating degree days5,788
 5,616
 172
 3 % 5,616
 5,913
 (297) (5)%


Year Ended December 31, 2020 Compared to Year Ended December 31, 2019
Regulated gas revenue includes purchased gas adjustments clauses ("PGAs") through which
MidAmerican Energy is allowed-

Electric utility margin decreased $38 million for 2020 compared to recover the cost2019 primarily due to:
(1)    Lower wholesale utility margin of gas sold from its$60 million due to lower market prices, partially offset by lower energy costs and higher sales volumes;
(2)    Higher retail gas utility customers. Consequently, fluctuations in the costmargin of gas sold do not directly affect gross margin or net income because regulated gas revenue reflects comparable fluctuations through the PGAs. For 2017, MidAmerican Energy's combined retail and wholesale average per-unit cost of gas sold increased 19%, resulting in $18 million due to -
an increase of $67$23 million from non-weather-related factors, net of price impacts from sales mix, including increased usage for certain industrial customers and the impacts of COVID-19, which generally resulted in gas revenuelower commercial and industrial customer usage and higher residential customer usage;
an increase of $1 million, net of energy costs, from higher recoveries through bill riders, primarily related to lower refunds related to the ratemaking treatment of 2017 Tax Reform (offset in income tax benefit) and higher transmission cost of gas sold compared to 2016. For 2016, MidAmerican Energy's combined retailrecoveries (offset in operations and wholesale average per-unit cost of gas sold decreased 10%maintenance expense), resulting insubstantially offset by a decrease of $42$28 million in electric energy efficiency program revenue (offset in operations and maintenance expense) and the PTC component of the energy adjustment clause (offset in income tax benefit);
a decrease of $3 million from the impact of weather; and
a decrease of $3 million from various other revenue; and
(3)    Higher Multi-Value Projects ("MVP") transmission revenue of $4 million.

260


Natural gas revenue and cost of gas soldutility margin decreased $19 million for 2020 compared to 2015. Additionally, fluctuations2019 primarily due to:
(1)    A decrease of $10 million in natural gas wholesale salesenergy efficiency program revenue (offset in operations and maintenance expense); and
(2)    A decrease of $9 million from the unfavorable impact gas revenueof weather in the first quarter.

Operations and cost of gas sold but do not affect regulated gas gross margin.

For 2017maintenance decreased $46 million for 2020 compared to 2016, regulated gas gross margin increased $8 million due to:
(1)higher DSM program revenue (offset in operations and maintenance expense) of $3 million;
(2)higher retail sales volumes of $2 million from colder winter temperatures;
(3)higher gas transportation throughput of $2 million and
(4)higher average per-unit margin of $2 million.

For 2016 compared to 2015, regulated gas gross margin increased $6 million due to:
(1)higher DSM program revenue (offset in operations and maintenance expense) of $6 million;
(2)higher gas transportation throughput of $2 million;
(3)higher average per-unit margin of $1 million, partially offset by
(4)lower retail sales volumes of $3 million from warmer winter temperatures.

Regulated Operating Costs and Expenses

Operations and maintenance increased $88 million for 2017 compared to 20162019 primarily due to higher DSMlower energy efficiency program expense of $25$38 million (offset in operating revenue), lower fossil-fueled generation maintenance of $14 million, lower natural gas distribution expenses of $10 million, lower electric distribution operations expenses of $7 million, a nuclear property insurance premium refund of $5 million and decreases in benefit plan service costs and healthcare and other administrative costs, partially offset by higher wind-powered generation expenses of $21 million due to new and repowered wind-powered generating facilities placed in-service in 2019 and easements, higher electric distribution maintenance expenses of $13 million largely driven by storm restoration related to a significant wind storm in August 2020 and higher transmission operations costs from MISO of $6$5 million both of which are recoverable in bill riders and offset(offset in operating revenue, higher coal-fueledrevenue).

Depreciation and nuclear generation maintenance of $22amortization increased $77 million substantiallyfor 2020 compared to 2019 primarily due to the timing of coal-fueled generation outages, higher$95 million related to new and repowered wind-powered generation maintenance of $18 million from additional wind turbines and higher electric distribution and transmission maintenance of $12 million due to tree trimming costs.

Operations and maintenance decreased $12 million for 2016 compared to 2015 due to lower fossil-fueled generation maintenance of $24 million from the timing of planned outages, lower generation operations of $7 million, lower health care, information technologygenerating facilities and other administrative costs of $7 million and lower electric and gas distribution costs of $6 million,plant placed in-service, partially offset by higher DSM program costslower Iowa revenue sharing accruals of $11 million and higher transmission operations costs from MISO of $9 million, both of which are recoverable in bill riders and matched by increases in revenue, and higher wind-powered generation maintenance of $13 million due to the addition of wind turbines.$23 million.


Depreciation and amortization increased $21 million for 2017 compared to 2016 due to utility plant additions, including wind-powered generating facilities placed in-service in the second half of 2016, accruals for Iowa regulatory arrangements of $15 million, partially offset by $31 million from lower depreciation rates implemented in December 2016.

Depreciation and amortization increased $72 million for 2016 compared to 2015 primarily due to additional wind-powered generating facilities placed in-service in the second half of 2015 and the fourth quarter of 2016 and $34 million for accruals for regulatory arrangements in Iowa that reduce electric utility net plant.

Property and other taxes increased $7$9 million for 20172020 compared to 20162019 due to higher Iowa replacement taxes from higher sales volumes and higher wind turbine property taxes and other real estate taxes.


Other Income and (Expense)

MidAmerican Energy -

Interest expense increased $18$23 million for 20172020 compared to 2016 due to higher interest expense from the issuance of $850 million of first mortgage bonds in February 2017 and $30 million of variable rate tax-exempt bonds in December 2016, partially offset by the redemption of $250 million of 5.95% Senior Notes in February 2017. Refer to Note 9 of Notes to Financial Statements in Item 8 of this Form 10-K for further discussion of first mortgage bonds.

Interest expense increased $13 million for 2016 compared to 20152019 primarily due to higher interest expense from the issuance of $650 million of first mortgage bonds in October 2015, partially offset by the payment of a $426 million turbine purchase obligation in December 2015.average long-term debt balances.


Allowance for borrowed and equity fundsincreased $29 decreased $45 million for 20172020 compared to 20162019 primarily due to higherlower construction work-in-progress balances related to the construction ofnew and repowered wind-powered generating facilities and the wind turbine repowering project.generation projects.


Other, net increased $5$2 million for 20172020 compared to 20162019 primarily due to higher returnslower non-service costs of postretirement employee benefit plans and a gain from the contribution of land to a joint venture in 2020, partially offset by lower interest income due to an unfavorable cash position and lower cash surrender values of corporate-owned life insurance policies and higher interest income from favorable cash positions, partially offset by a gain of $5 million in 2016 on the redemption of MidAmerican Energy's investments in auction rate securities.policies.


Other, netIncome tax benefit increased $9$199 million for 20162020 compared to 2015 due to a gain of $5 million on the redemption of MidAmerican Energy's investments in auction rate securities and higher returns from corporate-owned life insurance policies.

MidAmerican Funding -

In addition to the fluctuations discussed above for MidAmerican Energy, MidAmerican Funding's other, net for 2017 reflects a pre-tax charge of $29 million from the early redemption of a portion of MidAmerican Funding's 6.927% Senior Bonds due 2029, for 2016 reflects income of $2 million from a partnership's sale of a real estate investment, for 2015 reflects a $13 million pre-tax gain on the sale of an investment in a generating facility lease.

Income Tax Benefit

MidAmerican Energy -

MidAmerican Energy's income tax benefit increased $51 million for 2017 compared to 2016,2019, and the effective tax rate was (43)(223)% for 20172020 and (32)(88)% for 2016.2019. The change in the effective tax rate was substantially due to an increase of $38$132 million in productionPTCs, state income tax credits andimpacts, the effects of ratemaking partially offset by the impact of the 2017 Tax Reform and higher pre-tax income.lower pretax income in 2020.

MidAmerican Energy's income tax benefit on continuing operations decreased $15 million for 2016 compared to 2015, and the effective tax rate was (32)% for 2016 and (49)% for 2015. The change in the effective tax rate was substantially due to higher pre-tax income, partially offset by an increase of $39 million in production tax credits.


Federal renewable electricity production tax creditsPTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a prescribed per-kilowatt rate pursuant to the applicable federal income tax law and are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in service. Beginning in late 2014, some of MidAmerican Energy's wind-powered generating facilities surpassed the 10-year eligibility period and are no longerfor earning the credits. Most of those facilities have since been repowered, and under Internal Revenue Service rules, qualifying repowered facilities are eligible for the credits, or a portion thereof, for 10 years from the date they are returned to service. Refer to "Capital Expenditures" in Liquidity and Capital Resources for additional information about repowering and new wind-powered generation placed in-service. A credit per kilowatt hour of $0.025 for 2020 and 2019 and $0.024 for 2017 and $0.023 for 2016 and 20152018 was applied to the annual production of eligible facilities, which resulted in $287$510 million, $249$378 million and $210$308 million, respectively, in production tax credits.PTCs.


MidAmerican Funding -


MidAmerican Funding's incomeIncome tax benefit for MidAmerican Funding increased $63$197 million for 20172020 compared to 2016,2019, and the effective tax rate was (54)(235)% for 20172020 and (35)(93)% for 2016. MidAmerican Funding's income tax benefit on continuing operations decreased $11 million for 2016 compared to 2015, and the effective tax rate was (35)% for 2016 and (51)% for 2015.2019. The change in effective tax rates was due principally to the factors discussed for MidAmerican Energy. Additionally,


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Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

MidAmerican Energy -

Electric utility margin increased $42 million for 2019 compared to 2018 primarily due to:
(1)    Higher retail utility margin of $36 million due to -
an increase of $38 million, net of energy costs, from higher recoveries through bill riders, primarily related to the PTC component of the energy adjustment clause and ratemaking treatment for the impact of 2017 reflects anTax Reform (both offset in income tax benefitbenefit), partially offset by a decrease of $49 million in electric energy efficiency program revenue (offset in operations and maintenance expense);
an increase of $19 million from non-weather-related factors, net of price impacts from sales mix, including higher industrial customer usage, partially offset by lower residential customer usage;
a chargedecrease of $29$3 million from various other revenue; and
a decrease of $18 million from the impact of weather;
(2)    Higher wholesale utility margin of $5 million due to higher margin per unit reflecting lower energy costs, partially offset by lower sales volumes; and
(3)    Higher MVP transmission revenue of $1 million.

Natural gas utility margin decreased $24 million for 2019 compared to 2018 primarily due to:
(1)    A decrease of $27 million in natural gas energy efficiency program revenue (offset in operations and maintenance expense); and
(2)    An increase of $2 million from higher retail sales volumes due primarily to the early redemptionimpact of colder winter temperatures.

Operations and maintenance decreased $11 million for 2019 compared to 2018 due to lower energy efficiency program expense of $76 million (offset in operating revenue) and lower fossil-fueled generation maintenance of $9 million, partially offset by higher wind-powered generation costs of $37 million, primarily due to new and repowered wind-powered generating facilities, higher natural gas and electric distribution operations costs of $11 million, higher transmission operations costs from MISO of $7 million (offset in operating revenue), and higher healthcare and other operations costs.

Depreciation and amortization increased $30 million for 2019 compared to 2018 due to $78 million related to new and repowered wind-powered generating facilities and other plant placed in-service, partially offset by lower Iowa revenue sharing accruals of $46 million.

Interest expense increased $54 million for 2019 compared to 2018 primarily due to higher average long-term debt balances.

Allowance for borrowed and equity funds increased $32 million for 2019 compared to 2018 primarily due to higher construction work-in-progress balances related to new and repowered wind-powered generation projects.

Other, net increased $20 million for 2019 compared to 2018 primarily due to higher returns on corporate-owned life insurance policies and higher interest income due to a portionfavorable cash position.

Income tax benefit increased $116 million for 2019 compared to 2018, and the effective tax rate was (88)% for 2019 and (60)% for 2018. The change in the effective tax rate was substantially due to an increase of $70 million in PTCs, state income tax impacts and the effects of ratemaking.

MidAmerican Funding's 6.927% Senior BondsFunding -

Income tax benefit for MidAmerican Funding increased $115 million for 2019 compared to 2018, and the effective tax rate was (93)% for 2019 and (64)% for 2018. The change in effective tax rates was due 2029, and 2015 reflects income taxes on a $13 million gain fromprincipally to the sale of an investment in a generating facility lease.factors discussed for MidAmerican Energy.



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Liquidity and Capital Resources


As of December 31, 2017,2020, MidAmerican Energy's total net liquidity was $707 million consisting of $172 million of cash and cash equivalents and $905 million of credit facilities reduced by $370 million of the credit facilities reserved to support MidAmerican Energy's variable-rate tax-exempt bond obligations. As of December 31, 2017, MidAmerican Funding's total net liquidity was $711 million, including MHC's $4 million credit facility.were as follows (in millions):

MidAmerican Energy:
Cash and cash equivalents$38 
Credit facilities, maturing 2021 and 20221,505 
Less:
Tax-exempt bond support(370)
Net credit facilities1,135 
MidAmerican Energy total net liquidity$1,173 
MidAmerican Funding:
MidAmerican Energy total net liquidity$1,173 
Cash and cash equivalents
MHC, Inc. credit facility, maturing 2021
MidAmerican Funding total net liquidity$1,178 

Cash Flows From
Operating Activities


MidAmerican Energy's net cash flows from operating activities were $1,396$1,543 million, $1,403$1,490 million and $1,351$1,508 million for 2017, 20162020, 2019 and 2015,2018, respectively. MidAmerican Funding's net cash flows from operating activities were $1,380$1,536 million, $1,393$1,475 million and $1,335$1,516 million for 2017, 20162020, 2019 and 2015,2018, respectively. Cash flows from operating activities increased for 2020 compared to 2019 primarily due to higher income tax receipts and lower payments to vendors, partially offset by higher payments for the settlement of AROs, lower cash margins for MidAmerican Energy's regulated electric and natural gas businesses and higher interest payments due to long-term debt issued in October 2019. Cash flows from operating activities decreased for 20172019 compared to 20162018 primarily due to lower income tax receipts and higher interest payments, partially offset by higher cash margins for MidAmerican Energy's regulated electric business, including a reduction in fuel inventories. The increase in net cash flows from operating activities for 2016 comparedlower payments to 2015 was primarily due to higher cash margins for MidAmerican Energy's regulated electric business, partially offset by a growth in receivables net of payables,vendors and lower derivative collateral cash flows, higher payments for asset retirement obligation settlements, and the timingsettlement of DSM cost recovery cash flows.AROs.



MidAmerican Energy's income tax cash flows benefited in 2017, 2016 and 2015 from 50% bonus depreciation on qualifying assets placed in service and from production tax credits earned on qualifying projects. In December 2017, the 2017 Tax Reform was enacted which, among other items, reduces the federal corporate tax rate from 35% to 21% effective January 1, 2018 and eliminates bonus depreciation on qualifying regulated utility assets acquired after September 27, 2017, but did not impact production tax credits. MidAmerican Energy believes for qualifying assets acquired on or before September 27, 2017, bonus depreciation will be available for 2018 and 2019. MidAmerican Energy anticipates passing the benefits of lower tax expense to customers in the form of either rate reductions or rate base reductions. MidAmerican Energy expects lower revenue and income taxes as well as lower bonus depreciation benefits as a result of the 2017 Tax Reform and related regulatory treatment. MidAmerican Energy does not expect the 2017 Tax Reform and related regulatory treatment to have a material adverse impact on its cash flows, subject to actual regulatory outcomes. Refer to Regulatory Matters in Item 1 of this Form 10-K for further discussion of regulatory matters associated with the 2017 Tax Reform. The timing of MidAmerican Energy's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.


Internal Revenue Service ("IRS") rules provideIn February 2021, the central United States experienced extreme cold temperatures, causing increased demand for re-establishment of the production tax creditnatural gas by MidAmerican Energy's customers. While MidAmerican Energy was able to meet such demand without any significant interruptions to service, commodity prices for an existing wind-powered generating facility upon the replacement of a significant portion of its components. Such component replacement is commonly referred to as repowering. If the degree of component replacement in such projects meets IRS guidelines, production tax credits are re-established for ten years at rates that depend upon the date in which construction begins, as noted in the above paragraph. MidAmerican Energy’s current repowering projectsnatural gas purchases were significantly higher than historical experience. The increased commodity prices are expected to earn production tax credits at 100%result in greater short-term borrowing to fund such purchases until amounts are collected from customers via the PGAs. MidAmerican Energy believes it has adequate liquidity to meet the anticipated increase in short-term borrowing. While the increased costs are expected to be fully recoverable from customers, the timing of the value of such credits.recovery may depend upon possible actions taken by MidAmerican Energy's regulators.


Cash Flows From Investing Activities


MidAmerican Energy's net cash flows from investing activities were $(1,874)$(1,826) million, $(1,615)$(2,801) million and $(1,450)$(2,310) million for 2017, 20162020, 2019 and 2015,2018, respectively. MidAmerican Funding's net cash flows from investing activities were $(1,877)$(1,825) million, $(1,614)$(2,801) million and $(1,438)$(2,310) million for 2017, 20162020, 2019 and 2015,2018, respectively. Net cash flows from investing activities consist almost entirely of utility constructioncapital expenditures. Refer to "Future Uses of Cash" for further discussion of utility constructioncapital expenditures. Purchases and proceeds related to available-for-salemarketable securities primarily consist of activity within the Quad Cities Generating Station nuclear decommissioning trust, and in 2016,other investment proceeds relates primarily to company-owned life insurance policies. In 2018, proceeds from sales of other investments includes $15 million for the redemptiontransfer of MidAmerican Energy's investments in auction rate securities. MidAmerican Funding received $13 million in 2015 relatedcorporate aircraft to the sale of an investment in a generating facility lease. Restricted cash and short-term investments activity for 2017 and 2016 relates to restricted proceeds from Solid Waste Facilities Revenue Bonds issued by the Iowa Finance Authority in 2017 and 2016, as discussed below.BHE.


Cash Flows From
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Financing Activities


MidAmerican Energy's net cash flows from financing activities were $636$(2) million, $123$1,585 million and $173$576 million for 2017, 20162020, 2019 and 2015,2018, respectively. MidAmerican Funding's net cash flows from financing activities were $654$4 million, $133$1,600 million and $176$569 million for 2017, 20162020, 2019 and 2015,2018, respectively. In December 2017, the Iowa Finance AuthorityJanuary 2019, MidAmerican Energy issued $150$600 million of its variable-rate, tax-exempt Solid Waste Facilities Revenue Bonds due December 2047, the restricted proceeds of which were loaned to MidAmerican Energy for the purpose of constructing solid waste facilities. In February 2017, MidAmerican Energy issued $375 million of its 3.10%3.65% First Mortgage Bonds due May 2027April 2029 and $475$900 million of its 3.95% First Mortgage Bonds due August 2047. An amount equal to the net proceeds was used to finance capital expenditures disbursed during the period from February 2, 2016 to February 1, 2017, with respect to investments in MidAmerican Energy's 551-megawatt Wind X and 2,000-megawatt Wind XI projects, which were previously financed with MidAmerican Energy's general funds. In February 2017, MidAmerican Energy redeemed in full through optional redemption its $250 million of 5.95% Senior Notes due July 2017. In December 2016, the Iowa Finance Authority issued $30 million of its variable-rate, tax-exempt Solid Waste Facilities Revenue Bonds due December 2046, the proceeds of which were loaned to MidAmerican Energy for the purpose of constructing solid waste facilities. In September 2016, the Iowa Finance Authority issued $33 million of variable-rate, tax-exempt Pollution Control Facilities Refunding Revenue Bonds due September 2036, the proceeds of which were loaned to MidAmerican Energy to refinance, in September 2016, variable-rate tax-exempt pollution control refunding revenue bonds totaling $29 million due September 2016 and $4 million due March 2017, which were optionally redeemed in full. In October 2015, MidAmerican Energy issued $200 million of 3.50% First Mortgage Bonds due October 2024 and $450 million of 4.25% First Mortgage Bonds due May 2046. The net proceeds were used for the paymentJuly 2049, and in October 2019, issued an additional $250 million of a $426its 3.65% First Mortgage Bonds due April 2029 and $600 million turbine purchase obligationof its 3.15% First Mortgage Bonds due December 2015 and for general corporate purposes. Through its commercial paper program,April 2050. In February 2019, MidAmerican Energy made repayments totaling $99redeemed $500 million in 2017, received $99 million in 2016 and made repayments totaling $50 million in 2015.

In December 2017, MidAmerican Funding redeemed through a tender offer a portion of its 6.927% Senior Bonds. MidAmerican Funding received $133 million, $9 million and $3 million2.40% First Mortgage Bonds due in 2017, 2016 and 2015, respectively, through its note payable with BHE.

March 2019 at a redemption price of 100% of the principal amount plus accrued interest. In February 2018, MidAmerican Energy issued $700 million of its 3.65% First Mortgage Bonds due August 2048.2048 and, in March 2018, repaid $350 million of its 5.30% Senior Notes due March 2018. Net (repayments of) proceeds from short-term debt relate to MidAmerican Energy's use of short-term borrowings through its commercial paper program. MidAmerican Funding received $5 million and $15 million in 2020 and 2019, respectively, and made payments totaling $8 million in 2018 through its note payable with BHE.


Debt Authorizations and Related Matters


MidAmerican Energy has authority from the FERC to issue through February 28, 2019,April 2, 2022, commercial paper and bank notes aggregating $905 million$1.5 billion at interest rates not to exceed the applicable London Interbank Offered Rate ("LIBOR") plus a spread of 400 basis points. MidAmerican Energy has a $900 million unsecured credit facility expiring in June 2020 for which MidAmerican Energy may request that the banks extend the credit facility up to two years.2022. The credit facility, which supports MidAmerican Energy's commercial paper program and its variable-rate tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread that varies based on MidAmerican Energy's credit ratings for senior unsecured long-term debt securities. MidAmerican Energy has a $600 million unsecured credit facility, which expires in May 2021, with an option to extend for up to three months, and has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread. Additionally, MidAmerican Energy has a $5 million unsecured credit facility for general corporate purposes.


MidAmerican Energy currently has an effective automatic registration statement with the SEC to issue an indeterminate amount of long-term debt securities through September 16, 2018.June 26, 2021. Additionally, following the February 2018 issuance of $700 million of first mortgage bonds, MidAmerican Energy has authorization from the FERC to issue, through August 31, 2019, preferred stock up to an aggregate of $500 million andJune 30, 2021, long-term debt securities up to an aggregate of $1.5 billion$850 million at interest rates not to exceed the applicable United States Treasury rate plus a spread of 175 basis points and from the ICC to issue preferred stock up to an aggregate of $500 million through November 1, 2020, and additionalfrom the ICC to issue long-term debt securities up to an aggregate of $1.5 billion, of which $500$850 million expires March 15, 2019, and $1.0 billion expires November 1, 2020.through August 20, 2022.

In conjunction with the March 1999 merger, MidAmerican Energy committed to the IUB to use commercially reasonable efforts to maintain an investment grade rating on its long-term debt and to maintain its common equity level above 42% of total capitalization unless circumstances beyond its control result in the common equity level decreasing to below 39% of total capitalization. MidAmerican Energy must seek the approval of the IUB of a reasonable utility capital structure if MidAmerican Energy's common equity level decreases below 42% of total capitalization, unless the decrease is beyond the control of MidAmerican Energy. MidAmerican Energy is also required to seek the approval of the IUB if MidAmerican Energy's equity level decreases to below 39%, even if the decrease is due to circumstances beyond the control of MidAmerican Energy. If MidAmerican Energy's common equity level were to drop below the required thresholds, MidAmerican Energy's ability to issue debt could be restricted. As of December 31, 2017, MidAmerican Energy's common equity ratio was 53% computed on a basis consistent with its commitment. As a result of MidAmerican Energy's regulatory commitment to maintain its common equity above certain thresholds, MidAmerican Energy could dividend $2.1 billion as of December 31, 2017, without falling below 42%, and MidAmerican Funding had restricted net assets of $3.7 billion.


MidAmerican Funding or one of its subsidiaries, including MidAmerican Energy, may from time to time seek to acquire its outstanding debt securities through cash purchases in the open market, privately negotiated transactions or otherwise. Any debt securities repurchased by MidAmerican Funding or one of its subsidiaries may be reissued or resold by MidAmerican Funding or one of its subsidiaries from time to time and will depend on prevailing market conditions, the issuing company's liquidity requirements, contractual restrictions and other factors. The amounts involved may be material.


Future Uses of Cash


MidAmerican Energy and MidAmerican Funding have available a variety of sources of liquidity and capital resources, both internal and external, including net cash flows from operating activities, public and private debt offerings, the issuance of commercial paper, the use of unsecured revolving credit facilities, and other sources. These sources are expected to provide funds required for current operations, capital expenditures, debt retirements and other capital requirements. The availability and terms under which MidAmerican Energy and MidAmerican Funding have access to external financing depends on a variety of factors, including their credit ratings, investors' judgment of risk and conditions in the overall capital markets, including the condition of the utility industry.


Capital Expenditures


MidAmerican Energy's primary need forEnergy has significant future capital is utility construction expenditures.requirements. Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, impacts to customers' rates; changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital.



264


MidAmerican Energy's historical and forecast capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ended December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
Wind generation$1,706 $1,877 $911 $913 $738 $468 
Electric distribution270 277 273 298 266 238 
Electric transmission133 177 160 203 151 81 
Solar generation— 16 139 314 880 
Other223 477 476 548 455 369 
Total$2,332 $2,810 $1,836 $2,101 $1,924 $2,036 
 Historical Forecast
 2015 2016 2017 2018 2019 2020
            
Wind-powered generation development$931
 $943
 $657
 $1,132
 $1,038
 $329
Wind-powered generation repowering
 67
 514
 248
 205
 123
Transmission Multi-Value Projects156
 119
 21
 46
 
 
Other359
 507
 581
 970
 468
 445
Total$1,446
 $1,636
 $1,773
 $2,396
 $1,711
 $897


MidAmerican Energy's historical and forecast capital expenditures includeprovided above consist of the following:
TheWind generation includes the construction, acquisition, repowering and operation of wind-powered generating facilities in Iowa.
Construction and acquisition of wind-powered generating facilities totaled $848 million for 2020, $1,486 million for 2019 and $1,261 million for 2018. MidAmerican Energy placed in-service 334 MW729 MWs (nominal ratings) during 2017, 600 MW2020, including the acquisition of an existing 80-MW wind farm, 1,019 MWs (nominal ratings) during 20162019 and 608 MW817 MWs (nominal ratings) during 2015. In August 2016,2018. Wind XI, a 2,000-MW project, was completed in January 2020. Wind XII, a 592-MW project, was placed in-service in 2019 and 2020. MidAmerican Energy had three other wind-powered generation projects under construction in 2020 that totaled 319 MWs, including facilities placed in-service in 2020 and the IUB issued an order approving ratemaking principles related to MidAmerican Energy's construction of up to 2,000 MW (nominal ratings) of additional wind-powered generating facilities, including the additions in 2017 and facilitiesremainder expected to be placed in-service in 2018 and 2019. The ratemaking principles establish a cost cap of $3.6 billion, including AFUDC, and a fixed rate of return on equity of 11.0% over the proposed 40-year useful lives of those facilities in any future Iowa rate proceeding. The cost cap ensures that as long as total costs are below the cap, the investment will be deemed prudent in any future Iowa rate proceeding. Additionally, the ratemaking principles modify the revenue sharing mechanism currently in effect. The revised sharing mechanism will be effective in 2018 and will be triggered each year by actual equity returns exceeding a weighted average return on equity for MidAmerican Energy calculated annually. Pursuant to the change in revenue sharing, MidAmerican Energy will share 100% of the revenue in excess of this trigger with customers. Such revenue sharing will reduce coal and nuclear generation rate base, which is intended to mitigate future base rate increases.early 2021. MidAmerican Energy expects all of these wind-powered generating facilities to qualify for 100% of federal production tax creditsPTCs available.
The repowering of certain existing wind-powered generating facilities in Iowa. This project entails the replacement of significant components of the oldest turbines in MidAmerican Energy's fleet. The energy production PTCs from such repowered facilities is expected to qualify for 100% of the federal production tax credits available for ten years following each facility's return to service. Under MidAmerican Energy's Iowa electric tariff, federal production tax credits related to facilities that were in-service prior to 2013 must be included in its Iowa energy adjustment clause. In August 2017, the IUB approved a tariff change that excludesthese projects are excluded from MidAmerican Energy's Iowa energy adjustment clause any future federal production tax credits related tountil these repowered facilities. In 2017, facilities accounting for 414 MW and $465 million of repowering expenditures were placed in-service.generation assets are reflected in base rates.
Transmission MVP investments. In 2012, MidAmerican Energy startedis currently planning to construct 483 MWs of additional wind-powered generating facilities, for which the related projects are at varying stages of development. Planned spending for those projects totals $461 million for 2021, $16 million for 2022 and $421 million for 2023.
Repowering of wind-powered generating facilities totaled $37 million for 2020, $369 million for 2019 and $422 million for 2018. Planned spending for repowering totals $409 million in 2021 and $673 million in 2022. MidAmerican Energy expects its repowered facilities to meet IRS guidelines for the re-establishment of PTCs for 10 years from the date the facilities are placed in-service. The rate at which PTCs are re-established for a facility depends upon the date construction begins. Below is a summary of four MISO-approved MVPs located in Iowahistorical and Illinois. When complete, the four MVPs will have added approximately 250 milesforecast wind-powered generation repowering projects:
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Capacity% of Federal Production
Year Placed In-Service
(MWs)(1)
Tax Credit Rate
Historical:
2017412100%
2018222100%
2019466100%
201912080%
20205580%
Forecast:
202180100%
20212780%
202256480%
202240760%
(1)    Capacity values for historical repowered facilities reflect new nominal ratings and for forecast projects reflect existing nominal ratings.
Electric distribution includes expenditures for new facilities to meet retail demand growth and for replacement of 345 kVexisting facilities to maintain system reliability.
Electric transmission lineincludes expenditures to meet retail demand growth, upgrades to accommodate third-party generator requirements and replacement of existing facilities to maintain system reliability.
Solar reflects MidAmerican Energy's transmission systemcurrent plan to construct 767 MWs of small- and will be owned and operated by MidAmerican Energy. Asutility-scale solar generation, for which the related projects are in varying stages of December 31, 2017, 224 miles of these MVP transmission lines have been placed in-service.development.
Remaining expenditures primarily relate to routine operating projects for other generation, natural gas distribution, generation, transmissiontechnology, facilities and other infrastructure neededoperational needs to serve existing and expected demand.
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Contractual Obligations


MidAmerican Energy and MidAmerican Funding have contractual cash obligations that may affect their financial condition. The following table summarizes the material contractual cash obligations of MidAmerican Energy and MidAmerican Funding as of December 31, 20172020 (in millions):
Payments Due By Periods
2022-2024-2026 and
202120232025AfterTotal
MidAmerican Energy:
Long-term debt$— $315 $548 $6,413 $7,276 
Interest payments on long-term debt(1)(2)
289 579 543 4,104 5,515 
Coal, electricity and natural gas contracts commitments(1)
236 255 52 48 591 
Construction commitments(1)
442 287 735 
Easements(1)
38 79 82 1,542 1,741 
Other commitments(1)
156 318 215 358 1,047 
1,161 1,833 1,442 12,469 16,905 
MidAmerican Funding parent:
Long-term debt— — — 239 239 
Interest payments on long-term debt(1)
17 33 33 58 141 
17 33 33 297 380 
Total contractual cash obligations$1,178 $1,866 $1,475 $12,766 $17,285 
 Payments Due By Periods  
   2019- 2021- 2023 and  
 2018 2020 2022 After Total
MidAmerican Energy:         
Long-term debt$350
 $503
 $
 $4,227
 $5,080
Interest payments on long-term debt(1) (2)
203
 371
 365
 2,621
 3,560
Coal, electricity and natural gas contract commitments(1)
268
 278
 159
 85
 790
Construction commitments(1)
790
 30
 
 
 820
Easements and operating leases(1)
22
 42
 42
 713
 819
Other commitments(1)
96
 221
 268
 233
 818
 1,729
 1,445
 834
 7,879
 11,887
          
MidAmerican Funding parent:         
Long-term debt
 
 
 239
 239
Interest payments on long-term debt(1)
17
 33
 33
 108
 191
 17
 33
 33
 347
 430
Total contractual cash obligations$1,746
 $1,478
 $867
 $8,226
 $12,317
(1)Not reflected on the Consolidated Balance Sheets.
(1)Not reflected on the Consolidated Balance Sheets.
(2)Includes interest payments for tax-exempt bond obligations with interest rates scheduled to reset periodically prior to maturity. Future variable interest rates are assumed to equal December 31, 2017 rates.

(2)Includes interest payments for tax-exempt bond obligations with interest rates scheduled to reset periodically prior to maturity. Future variable interest rates are assumed to equal December 31, 2020 rates.

MidAmerican Energy has other types of commitments that relate primarily to construction expenditures (in "Utility Construction"Capital Expenditures" section above) and asset retirement obligationsAROs beyond 20172020 (Note 12)11), which have not been included in the above table because the amount or timing of the cash payments is not certain. Refer to Notes 9, 128, 11 and 1513 in Notes to Financial Statements in Item 8 of this Form 10-K for additional information.


Regulatory Matters


MidAmerican Energy is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further discussioninformation regarding MidAmerican Energy's general regulatory framework and current regulatory matters.


COVID-19

In March 2020, COVID-19 was declared a global pandemic, and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by MidAmerican Energy. While COVID-19 has impacted MidAmerican Energy's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. The states in which MidAmerican Energy operates have moved to varying phases of recovery plans with most businesses opening subject to certain operating restrictions. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity or natural gas may continue to occur, particularly in the commercial and industrial classes. Due to regulatory requirements and voluntary actions taken by MidAmerican Energy related to customer collection activity and suspension of disconnections for non-payment, MidAmerican Energy has seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. Regulatory jurisdictions may allow for recovery of certain costs incurred in responding to COVID-19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion.

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MidAmerican Energy's business has been deemed essential and its employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain its electric generation, transmission and distribution system and its natural gas distribution system. In response to the effects of COVID-19, MidAmerican Energy has implemented its business continuity plan to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID-19.

Quad Cities Generating Station Operating Status


Exelon Generation Company, LLC ("Exelon Generation"), the operator of Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station") of which MidAmerican Energy has a 25% ownership interest, announced on June 2, 2016, its intention to shut down Quad Cities Station on June 1, 2018, as a result of Illinois not passing adequate legislation and Quad Cities Station not clearing the 2019-2020 PJM Interconnection, L.L.C. capacity auction. MidAmerican Energy expressed to Exelon Generation its desire for the continued operation of the facility through the end of its operating license in 2032 and worked with Exelon Generation on solutions to that end.2018. In December 2016, Illinois passed legislation creating a zero emission standard, which went into effect June 1, 2017. The zero emission standard requires the Illinois Power Agency to purchase zero emission creditsZECs and recover the costs from certain ratepayers in Illinois, subject to certain limitations. The proceeds from the zero emission creditsZECs will provide Exelon Generation additional revenue through 2027 as an incentive for continued operation of Quad Cities Station. For the nuclear assets already in rate base, MidAmerican Energy's customers will not be charged for the subsidy, and MidAmerican Energy will not receive additional revenue from the subsidy.



On February 14, 2017, two lawsuits were filed with the United States District Court for the Northern District of IllinoisThe PJM Interconnection, L.L.C. ("Northern District of Illinois"PJM") against the Illinois Power Agency alleging that the state’s zero emission credit program violates certain provisions of the U.S. Constitution. Both complaints argue that the Illinois zero emission credit program will distort the FERC’s energy and capacity market auction system of setting wholesale prices. As majority owner and operator of Quad Cities Station, Exelon Generation intervened and filed motions to dismiss in both lawsuits. On July 14, 2017, the Northern District of Illinois granted the motions to dismiss. On July 17, 2017, the plaintiffs filed appeals with the United States Court of Appeals for the Seventh Circuit. Parties have filed briefs and presented oral argument. MidAmerican Energy cannot predict the outcome of these lawsuits.

On January 9, 2017, the Electric Power Supply Association filed two requests with the FERC seeking to expandincludes a Minimum Offer Price Rule ("MOPR") provisions. If a generation resource is subjected to applya MOPR, its offer price in the market is adjusted to effectively remove the revenues it receives through a government-provided financial support program, resulting in a higher offer that may not clear the capacity market. Prior to December 19, 2019, the PJM MOPR applied only to certain new gas-fired resources. An expanded PJM MOPR to include existing resources receiving zero emission credit compensation. If successful, an expanded MOPR could resultwould require exclusion of ZEC compensation when bidding into future capacity auctions, resulting in an increased risk of Quad Cities Station not clearing in future capacity auctions and Exelon Generation no longer receiving capacity revenues in future auctions.

On December 19, 2019, the FERC issued an order requiring the PJM to broadly apply the MOPR to all new and existing resources, including nuclear. This greatly expands the breadth and scope of the PJM's MOPR, which is effective as of the PJM's next capacity auction. While the FERC included some limited exemptions in its order, no exemptions were available to state-supported nuclear resources, such as Quad Cities Station. The FERC provided no new mechanism for accommodating state-supported resources other than the facility.existing Fixed Resource Requirement ("FRR") mechanism under which an entire utility zone would be removed from PJM's capacity auction along with sufficient resources to support the load in such zone. In response to the FERC's order, the PJM submitted a compliance filing on March 18, 2020, wherein the PJM proposes tariff language reflecting the FERC's directives and a schedule for resuming capacity auctions. On April 16, 2020, the FERC issued an order largely denying requests for rehearing of the FERC's December 2019 order but granting a few clarifications that required an additional PJM compliance filing, which it submitted on June 1, 2020. On October 15, 2020, the FERC issued an order denying requests for rehearing of its April 16, 2020 order and accepting the PJM's two compliance filings, subject to a further compliance filing to revise minor aspects of the proposed MOPR methodology. As majority ownerpart of that order, the FERC also accepted the PJM's proposal to condense the schedule of activities leading up to the next capacity auction but did not specify when that schedule would commence given that a key element of the MOPR level computation remains pending before the FERC in another proceeding. In November 2020, the PJM announced that the next capacity auction will be conducted in May 2021.

On May 21, 2020, the FERC issued an order involving reforms to the PJM's day-ahead and operatorreal-time reserves markets that need to be reflected in the calculation of MOPR levels. In approving reforms to the PJM's reserves markets, the FERC also directed the PJM to develop a new methodology for estimating revenues that resources will receive for sales of energy and related services, which will then be used in calculating a number of parameters and assumptions used in the capacity market, including MOPR levels. The PJM submitted its new revenue projection methodology on August 5, 2020. On review of this compliance filing, the FERC is expected to address how these additional reforms will impact MOPR levels, the timeline for implementing the new revenue projection methodology, and the timing for commencing the capacity auction schedule.

Exelon Generation is currently working with PJM and other stakeholders to pursue the FRR option as an alternative to the next PJM capacity auction. If Illinois implements the FRR option, Quad Cities Station could be removed from PJM's capacity auction and instead supply capacity and be compensated under the FRR program. If Illinois cannot implement an FRR program in its PJM zones, then the MOPR will apply to Quad Cities Station, resulting in higher offers for its units that may not clear the capacity market. Implementing the FRR program in Illinois will require both legislative and regulatory changes. MidAmerican Energy cannot predict whether or when such legislative and regulatory changes can be implemented or their potential impact on the continued operation of Quad Cities Station, Exelon Generation has filed protests at the FERC in response to each filing. The timing of the FERC’s decision with respect to both proceedings is currently unknown and the outcome of these matters is currently uncertain.Station.



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Environmental Laws and Regulations


MidAmerican Energy is subject to federal, state and local laws and regulations regarding climate change, RPS, air and water quality, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state and local agencies. All such laws and regulations are subject to a range of interpretation, which may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and MidAmerican Energy is unable to predict the impact of the changing laws and regulations on its operations and financial results. MidAmerican Energy believes it is in material compliance with all applicable laws and regulations.


Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations and "Liquidity and Capital Resources" for MidAmerican Energy's forecast environmental-related capital expenditures.regulations.


Collateral and Contingent Features


Debt securities of MidAmerican Energy are rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of MidAmerican Energy's ability to, in general, meet the obligations of its issued debt securities. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time. As of December 31, 2017,2020, MidAmerican Energy's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt from the three recognized credit rating agencies were investment grade. As a result of the issuance of first mortgage bonds by MidAmerican Energy in September 2013, its then outstanding senior unsecured debt was equally and ratably secured with such first mortgage bonds. Refer to Note 98 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K for a discussion of MidAmerican Energy's first mortgage bonds.


MidAmerican Funding and MidAmerican Energy have no credit rating downgrade triggers that would accelerate the maturity dates of its outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. MidAmerican Energy's unsecured revolving credit facilities do not require the maintenance of a minimum credit rating level in order to draw upon their availability. However, commitment fees and interest rates under the credit facilities are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.



In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base MidAmerican Energy's collateral requirements on its credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in MidAmerican Energy's creditworthiness. These rights can vary by contract and by counterparty. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2017,2020, MidAmerican Energy would have been required to post $114$87 million of additional collateral. MidAmerican Energy's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. Refer to Note 13 of Notes to Financial Statements in Item 8 of this Form 10-K for a discussion of MidAmerican Energy's collateral requirements specific to its derivative contracts.


Inflation


Historically, overall inflation and changing prices in the economies where MidAmerican Energy operates have not had a significant impact on its financial results. MidAmerican Energy operates under cost-of-service based rate structures administered by various state commissions and the FERC. Under these rate structures, MidAmerican Energy is allowed to include prudent costs in its rates, including the impact of inflation. MidAmerican Energy attempts to minimize the potential impact of inflation on its operations through the use of fuel, energy and other cost adjustment clauses and bill riders, by employing prudent risk management and hedging strategies and by considering, among other areas, inflation's impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs, and long-term debt issuances. There can be no assurance that such actions will be successful.


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New Accounting Pronouncements



For a discussion of new accounting pronouncements affecting MidAmerican Energy and MidAmerican Funding, refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Critical Accounting Estimates


Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by MidAmerican Energy's methods, judgments and assumptions used in the preparation of the Financial Statements and should be read in conjunction with MidAmerican Energy's Summary of Significant Accounting Policies included in Note 2 of Notes to Financial Statements in Item 8 of this Form 10-K.


Accounting for the Effects of Certain Types of Regulation


MidAmerican Energy prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, MidAmerican Energy defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.


MidAmerican Energy continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition, that could limit MidAmerican Energy's ability to recover its costs. MidAmerican Energy believes the application of the guidance for regulated operations is appropriate, and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").AOCI. Total regulatory assets were $204$392 million and total regulatory liabilities were $1,661$1,111 million as of December 31, 2017.2020. Refer to Note 65 of Notes to Financial Statements in Item 8 of this Form 10-K for additional information regarding regulatory assets and liabilities.



Income Taxes


In determining MidAmerican Funding's and MidAmerican Energy's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by MidAmerican Energy's various regulatory jurisdictions.commissions. MidAmerican Funding's and MidAmerican Energy's income tax returns are subject to continuous examinations by federal, state and local tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. MidAmerican Funding and MidAmerican Energy recognize the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of their federal, state and local tax examinations is uncertain, each company believes it has made adequate provisions for its income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on its consolidated financial results. Refer to Note 109 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding income taxes.


It is probable that MidAmerican Energy will pass income tax benefits and expensesexpense related to the federal tax rate change from 35% to 21%, as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to its customers.customers in certain state jurisdictions. As of December 31, 2017,2020, these amounts were recognized as a net regulatory liability of $681$263 million and will be included in regulated rates when the associated temporary differences reverse.

270


Impairment of Goodwill


MidAmerican Funding's Consolidated Balance Sheet as of December 31, 2017,2020, includes goodwill from the acquisition of MHC totaling $1.3 billion. Goodwill is allocated to each reporting unit. MidAmerican Funding evaluates goodwill for impairment at least annually and completed its annual review as of October 31. Additionally, no indicators of impairment were identified as of December 31, 2017.2020. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. MidAmerican Funding uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings; and an appropriate discount rate. Estimated future cash flows are impacted by, among other factors, growth rates, changes in regulations and rates, ability to renew contracts and estimates of future commodity prices. In estimating future cash flows, MidAmerican Funding incorporates current market information, as well as historical factors.


Pension and Other Postretirement Benefits


MidAmerican Energy sponsors defined benefit pension and other postretirement benefit plans that cover the majority of the employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy Inc. MidAmerican Energy recognizes the funded status of its defined benefit pension and other postretirement benefit plans on the Balance Sheets. Funded status is the fair value of plan assets minus the benefit obligation as of the measurement date. As of December 31, 2017,2020, MidAmerican Energy recognized a net liability totaling $23$153 million for the funded status of its defined benefit pension and other postretirement benefit plans. As of December 31, 2017,2020, amounts not yet recognized as a component of net periodic benefit cost that were included in regulatory assets and regulatory liabilities totaled $38$66 million and $41$20 million, respectively.


The expense and benefit obligations relating to these defined benefit pension and other postretirement benefit plans are based on actuarial valuations. Inherent in these valuations are key assumptions, including discount rates, expected long-term rate of return on plan assets and healthcare cost trend rates. These key assumptions are reviewed annually and modified as appropriate. MidAmerican Energy believes that the assumptions utilized in recording obligations under the plans are reasonable based on prior plan experience and current market and economic conditions. Refer to Note 1110 of Notes to Financial Statements in Item 8 of this Form 10-K for disclosures about MidAmerican Energy's defined benefit pension and other postretirement benefit plans, including the key assumptions used to calculate the funded status and net periodic benefit cost for these plans as of and for the year ended December 31, 2017.2020.


MidAmerican Energy chooses a discount rate based upon high quality debt security investment yields in effect as of the measurement date that corresponds to cash flows over the expected benefit period. The pension and other postretirement benefit liabilities increase as the discount rate is reduced.



In establishing its assumption as to the expected long-term rate of return on plan assets, MidAmerican Energy utilizes the expected asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets. Pension and other postretirement benefits expense increases as the expected long-term rate of return on plan assets decreases. MidAmerican Energy regularly reviews its actual asset allocations and rebalances its investments to its targeted allocations when considered appropriate.


MidAmerican Energy chooses a healthcare cost trend rate that reflects the near and long-term expectations of increases in medical costs and corresponds to the expected benefit payment periods. The healthcare cost trend rate is assumed to gradually decline to 5% by 2025 at which point the rate of increase is assumed to remain constant. Refer to Note 1110 of Notes to Financial Statements in Item 8 of this Form 10-K for healthcare cost trend rate sensitivity disclosures.



271


The key assumptions used may differ materially from period to period due to changing market and economic conditions. These differences may result in a significant impact to pension and other postretirement benefits expense and the funded status. If changes were to occur for the following key assumptions, the approximate effect on the Financial Statements of the total plan before allocations to affiliates would be as follows (in millions):
Other Postretirement
Pension PlansBenefit Plans
+0.5%-0.5%+0.5%-0.5%
Effect on December 31, 2020 Benefit Obligations:
Discount rate$(45)$53 $(15)$16 
Effect on 2020 Periodic Cost:
Discount rate(2)— — 
Expected rate of return on plan assets(3)(1)
   Other Postretirement
 Pension Plans Benefit Plans
 +0.5% -0.5% +0.5% -0.5%
Effect on December 31, 2017 Benefit Obligations:       
Discount rate$(38) $42
 $(10) $10
        
Effect on 2017 Periodic Cost:       
Discount rate1
 (2) 
 
Expected rate of return on plan assets(3) 3
 (1) 1


A variety of factors affect the funded status of the plans, including asset returns, discount rates, plan changes and MidAmerican Energy's funding policy for each plan.


Revenue Recognition - Unbilled Revenue


Revenue from electric and natural gas customers is recognized as electricity or natural gas is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters and rates. At the end of each month, energy provided to customers since the date of the last meter reading is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $89$95 million as of December 31, 2017.2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses economic impacts and composition of sales among customer classes. Unbilled revenue is reversed in the following month, and billed revenue is recorded based on the subsequent meter readings.



Item 7A.Quantitative and Qualitative Disclosures About Market Risk


MidAmerican Energy's Balance Sheets include assets and liabilities with fair values that are subject to market risks. MidAmerican Energy's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which it transacts. The following discussion addresses the significant market risks associated with MidAmerican Energy's business activities. MidAmerican Energy has established guidelines for credit risk management. Refer to NotesNote 2 and 13 of Notes to Financial Statements in Item 8 of this Form 10-K for additional information regarding MidAmerican Energy's contracts accounted for as derivatives.



Commodity Price Risk


MidAmerican Energy is exposed to the impact of market fluctuations in commodity prices and interest rates. MidAmerican Energy is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its regulated service territory. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather; market liquidity; generating facility availability; customer usage; storage; and transmission and transportation constraints. Commodity price risk for MidAmerican Energy's regulated retail electricity and natural gas operations is significantly mitigated by the inclusion of energy costs in energy cost rider mechanisms, which permit the current recovery of such costs from its retail customers. MidAmerican Energy uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements to mitigate price volatility on behalf of its customers. MidAmerican Energy does not engage in a material amount of proprietary trading activities, and following the January 1, 2016 transfer of MidAmerican Energy's unregulated retail services business to a subsidiary of BHE, MidAmerican Energy no longer provides nonregulated retail electricity and natural gas services in competitive markets.activities.



272


Interest Rate Risk


MidAmerican Energy and MidAmerican Funding are exposed to interest rate risk on their outstanding variable-rate short- and long-term debt and future debt issuances. MidAmerican Energy and MidAmerican Funding manage interest rate risk by limiting their exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, the fixed-rate long-term debt does not expose MidAmerican Energy or MidAmerican Funding to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if MidAmerican Energy or MidAmerican Funding were to reacquire all or a portion of these instruments prior to their maturity. MidAmerican Energy or MidAmerican Funding may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate their exposure to interest rate risk. The nature and amount of their short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 7, 8 9 and 1412 of Notes to Consolidated Financial Statements in Item 1 of this Form 10-K for additional discussion of MidAmerican Energy's and MidAmerican Funding's short- and long-term debt.


As of December 31, 20172020 and 2016,2019, MidAmerican Energy had short- and long-term variable-rate obligations totaling $370 million and $319 million, respectively, that expose MidAmerican Energy to the risk of increased interest expense in the event of increases in short-term interest rates. The market risk related to MidAmerican Energy's variable-rate debt as of December 31, 2017,2020, is not hedged. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on MidAmerican Energy's annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 20172020 and 2016.2019.


Credit Risk


MidAmerican Energy is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Additionally, MidAmerican Energy participates in the regional transmission organization ("RTO") markets and has indirect credit exposure related to other participants, although RTO credit policies are designed to limit exposure to credit losses from individual participants. Credit risk may be concentrated to the extent MidAmerican Energy's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, MidAmerican Energy analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty, and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, MidAmerican Energy enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, MidAmerican Energy exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.


Substantially all of MidAmerican Energy's electric wholesale sales revenue results from participation in RTOs, including the MISO and the PJM. MidAmerican Energy's share of historical losses from defaults by other RTO market participants has not been material. Additionally, as of December 31, 2017,2020, MidAmerican Energy's aggregate direct credit exposure from electric wholesale marketing counterparties was not material.



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Item 8.Financial Statements and Supplementary Data



Item 8.Financial Statements and Supplementary Data

MidAmerican Energy Company



MidAmerican Funding, LLC and Subsidiaries




274




REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM




To the Board of Directors and Shareholder of
MidAmerican Energy Company
Des Moines, Iowa


Opinion on the Financial Statements


We have audited the accompanying balance sheets of MidAmerican Energy Company ("MidAmerican Energy") as of December 31, 20172020 and 2016, and2019, the related statements of operations, comprehensive income, changes in shareholder's equity, and cash flows for each of the three years in the period ended December 31, 2017, and2020, the related notes and the schedule listed in the Index at Item 15(a)(ii)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of MidAmerican Energy as of December 31, 20172020 and 2016,2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2020, in conformity with accounting principles generally accepted in the United States of America.


Basis for Opinion


These financial statements are the responsibility of MidAmerican Energy's management. Our responsibility is to express an opinion on MidAmerican Energy's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to MidAmerican Energy in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. MidAmerican Energy is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of MidAmerican Energy’sEnergy's internal control over financial reporting. Accordingly, we express no such opinion.


Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.



Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.


275


Regulatory Matters - Impact of Rate Regulation on the Financial Statements - Refer to Notes 2 and 5 to the financial statements

Critical Audit Matter Description

MidAmerican Energy is subject to rate regulation by state public service commissions as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to the rates of electric and natural gas companies in the respective service territories where MidAmerican Energy operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense and income tax benefit.

Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow MidAmerican Energy an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While MidAmerican Energy has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit MidAmerican Energy's ability to recover its costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated MidAmerican Energy's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected MidAmerican Energy's filings with the Commissions and the filings with the Commissions by intervenors that may impact MidAmerican Energy's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

/s/ Deloitte & Touche LLP


Des Moines, Iowa
February 23, 201826, 2021


We have served as MidAmerican Energy's auditor since 1999.



276


MIDAMERICAN ENERGY COMPANY
BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$38 $287 
Trade receivables, net234 291 
Inventories278 226 
Other current assets73 90 
Total current assets623 894 
Property, plant and equipment, net19,279 18,375 
Regulatory assets392 289 
Investments and restricted investments911 818 
Other assets232 188 
Total assets$21,437 $20,564 
 As of December 31,
 2017 2016
    
ASSETS
Current assets:   
Cash and cash equivalents$172
 $14
Receivables, net344
 285
Income taxes receivable51
 9
Inventories245
 264
Other current assets134
 35
Total current assets946
 607
    
Property, plant and equipment, net14,207
 12,821
Regulatory assets204
 1,161
Investments and restricted cash and investments728
 653
Other assets233
 217
    
Total assets$16,318
 $15,459


The accompanying notes are an integral part of these financial statements.

277


MIDAMERICAN ENERGY COMPANY
BALANCE SHEETS (continued)
(Amounts in millions)

As of December 31,
20202019
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:
Accounts payable$408 $519 
Accrued interest78 78 
Accrued property, income and other taxes161 225 
Other current liabilities183 219 
Total current liabilities830 1,041 
Long-term debt7,210 7,208 
Regulatory liabilities1,111 1,406 
Deferred income taxes3,054 2,626 
Asset retirement obligations709 704 
Other long-term liabilities458 339 
Total liabilities13,372 13,324 
Commitments and contingencies (Note 13)00
Shareholder's equity:
Common stock - 350 shares authorized, 0 par value, 71 shares issued and outstanding
Additional paid-in capital561 561 
Retained earnings7,504 6,679 
Total shareholder's equity8,065 7,240 
Total liabilities and shareholder's equity$21,437 $20,564 
 As of December 31,
 2017 2016
    
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:   
Accounts payable$452
 $303
Accrued interest48
 45
Accrued property, income and other taxes132
 137
Short-term debt
 99
Current portion of long-term debt350
 250
Other current liabilities128
 159
Total current liabilities1,110
 993
    
Long-term debt4,692
 4,051
Deferred income taxes2,237
 3,572
Regulatory liabilities1,661
 883
Asset retirement obligations528
 510
Other long-term liabilities326
 290
Total liabilities10,554
 10,299
    
Commitments and contingencies (Note 15)
 
    
Shareholder's equity:   
Common stock - 350 shares authorized, no par value, 71 shares issued and outstanding
 
Additional paid-in capital561
 561
Retained earnings5,203
 4,599
Total shareholder's equity5,764
 5,160
    
Total liabilities and shareholder's equity$16,318
 $15,459


The accompanying notes are an integral part of these financial statements.



278


MIDAMERICAN ENERGY COMPANY
STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating revenue:
Regulated electric$2,139 $2,237 $2,283 
Regulated natural gas and other581 688 766 
Total operating revenue2,720 2,925 3,049 
Operating expenses:
Cost of fuel and energy339 399 487 
Cost of natural gas purchased for resale and other328 413 466 
Operations and maintenance754 800 811 
Depreciation and amortization716 639 609 
Property and other taxes135 126 125 
Total operating expenses2,272 2,377 2,498 
Operating income448 548 551 
Other income (expense):
Interest expense(304)(281)(227)
Allowance for borrowed funds15 27 20 
Allowance for equity funds45 78 53 
Other, net52 50 30 
Total other income (expense)(192)(126)(124)
Income before income tax benefit256 422 427 
Income tax benefit(570)(371)(255)
Net income$826 $793 $682 
 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Regulated electric$2,108
 $1,985
 $1,837
Regulated gas and other729
 640
 665
Total operating revenue2,837
 2,625
 2,502
      
Operating costs and expenses:     
Cost of fuel, energy and capacity434
 409
 433
Cost of gas sold and other442
 367
 398
Operations and maintenance781
 693
 705
Depreciation and amortization500
 479
 407
Property and other taxes119
 112
 110
Total operating costs and expenses2,276
 2,060
 2,053
      
Operating income561
 565
 449
      
Other income and (expense):     
Interest expense(214) (196) (183)
Allowance for borrowed funds15
 8
 8
Allowance for equity funds41
 19
 20
Other, net19
 14
 5
Total other income and (expense)(139) (155) (150)
      
Income before income tax benefit422
 410
 299
Income tax benefit(183) (132) (147)
      
Income from continuing operations605
 542
 446
      
Discontinued operations (Note 3):     
Income from discontinued operations
 
 22
Income tax expense
 
 6
Income on discontinued operations
 
 16
      
Net income$605
 $542
 $462


The accompanying notes are an integral part of these financial statements.



279


MIDAMERICAN ENERGY COMPANY
STATEMENTS OF COMPREHENSIVE INCOMECHANGES IN SHAREHOLDER'S EQUITY
(Amounts in millions)

AdditionalTotal
CommonPaid-inRetainedShareholder's
StockCapitalEarningsEquity
Balance, December 31, 2017$$561 $5,203 $5,764 
Net income— — 682 682 
Balance, December 31, 2018561 5,885 6,446 
Net income— — 793 793 
Other equity transactions— — 
Balance, December 31, 2019561 6,679 7,240 
Net income— — 826 826 
Other equity transactions— — (1)(1)
Balance, December 31, 2020$$561 $7,504 $8,065 
 Years Ended December 31,
 2017 2016 2015
      
Net income$605
 $542
 $462
      
Other comprehensive income (loss), net of tax:     
Unrealized gains on available-for-sale securities, net of tax of $-, $1 and $-
 3
 
Unrealized losses on cash flow hedges, net of tax of $-, $- and $(4)
 
 (7)
Total other comprehensive income (loss), net of tax
 3
 (7)
      
Comprehensive income$605
 $545
 $455


The accompanying notes are an integral part of these financial statements.


MIDAMERICAN ENERGY COMPANY
STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)


280
     Accumulated  
     Other  
 Common Retained Comprehensive Total
 Stock Earnings Loss, Net Equity
        
Balance, December 31, 2014$561
 $3,712
 $(23) $4,250
Net income
 462
 
 462
Other comprehensive loss
 
 (7) (7)
Balance, December 31, 2015561
 4,174
 (30) 4,705
Net income
 542
 
 542
Other comprehensive income
 
 3
 3
Dividend (Note 3)
 (117) 27
 (90)
Balance, December 31, 2016561
 4,599
 
 5,160
Net income
 605
 
 605
Other equity transactions
 (1) 
 (1)
Balance, December 31, 2017$561
 $5,203
 $
 $5,764



The accompanying notes are an integral part of these financial statements.


MIDAMERICAN ENERGY COMPANY
STATEMENTS OF CASH FLOWS
(Amounts in millions)

Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$826 $793 $682 
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization716 639 609 
Amortization of utility plant to other operating expenses34 33 34 
Allowance for equity funds(45)(78)(53)
Deferred income taxes and amortization of investment tax credits208 154 33 
Settlements of asset retirement obligations(124)(14)(28)
Other, net(18)40 
Changes in other operating assets and liabilities:
Trade receivables and other assets48 60 (25)
Inventories(52)(22)41 
Pension and other postretirement benefit plans, net(19)(10)(13)
Accrued property, income and other taxes, net(64)(76)218 
Accounts payable and other liabilities33 (30)
Net cash flows from operating activities1,543 1,490 1,508 
Cash flows from investing activities:
Capital expenditures(1,836)(2,810)(2,332)
Purchases of marketable securities(281)(156)(263)
Proceeds from sales of marketable securities269 138 223 
Proceeds from sales of other investments17 
Other investment proceeds13 15 
Other, net11 13 30 
Net cash flows from investing activities(1,826)(2,801)(2,310)
Cash flows from financing activities:
Proceeds from long-term debt2,326 687 
Repayments of long-term debt(500)(350)
Net (repayments of) proceeds from short-term debt(240)240 
Other, net(2)(1)(1)
Net cash flows from financing activities(2)1,585 576 
Net change in cash and cash equivalents and restricted cash and cash equivalents(285)274 (226)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year330 56 282 
Cash and cash equivalents and restricted cash and cash equivalents at end of year$45 $330 $56 

 Years Ended December 31,
 2017 2016 2015
Cash flows from operating activities:     
Net income$605
 $542
 $462
Adjustments to reconcile net income to net cash flows from operating activities:     
Depreciation and amortization500
 479
 407
Deferred income taxes and amortization of investment tax credits332
 361
 275
Changes in other assets and liabilities37
 47
 49
Other, net(59) (91) (58)
Changes in other operating assets and liabilities:     
Receivables, net(58) (61) 91
Inventories19
 (27) (53)
Derivative collateral, net2
 5
 33
Pension and other postretirement benefit plans, net(11) (6) (8)
Accounts payable69
 39
 (76)
Accrued property, income and other taxes, net(41) 107
 217
Other current assets and liabilities1
 8
 12
Net cash flows from operating activities1,396
 1,403
 1,351
      
Cash flows from investing activities:     
Utility construction expenditures(1,773) (1,636) (1,446)
Purchases of available-for-sale securities(143) (138) (142)
Proceeds from sales of available-for-sale securities137
 158
 135
Net increase in restricted cash and short-term investments(98) (10) 
Other, net3
 11
 3
Net cash flows from investing activities(1,874) (1,615) (1,450)
      
Cash flows from financing activities:     
Proceeds from long-term debt990
 62
 649
Repayments of long-term debt(255) (38) (426)
Net (repayments of) proceeds from short-term debt(99) 99
 (50)
Net cash flows from financing activities636
 123
 173
      
Net change in cash and cash equivalents158
 (89) 74
Cash and cash equivalents at beginning of year14
 103
 29
Cash and cash equivalents at end of year$172
 $14
 $103



The accompanying notes are an integral part of these financial statements.





281


MIDAMERICAN ENERGY COMPANY
NOTES TO FINANCIAL STATEMENTS


(1)
Company Organization

(1)Organization and Operations

MidAmerican Energy Company ("MidAmerican Energy") is a public utility with electric and natural gas operations and is the principal subsidiary of MHC Inc. ("MHC"). MHC is a holding company that conducts no business other than the ownership of its subsidiaries and related corporate services. MHC's nonregulated subsidiaries includesubsidiary is Midwest Capital Group, Inc. and MEC Construction Services Co. MHC is the direct wholly owned subsidiary of MidAmerican Funding, LLC, ("MidAmerican Funding"), which is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").


(2)
Summary of Significant Accounting Policies

(2)Summary of Significant Accounting Policies

Basis ofPresentation

The Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the years ended December 31, 2020, 2019 and 2018.

Use of Estimates in Preparation of Financial Statements


The preparation of the Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Financial Statements.


Accounting for the Effects of Certain Types of Regulation


MidAmerican Energy's utility operations are subject to the regulation of the Iowa Utilities Board ("IUB"), the Illinois Commerce Commission ("ICC"), the South Dakota Public Utilities Commission, and the Federal Energy Regulatory Commission ("FERC"). MidAmerican Energy's accounting policies and the accompanying Financial Statements conform to GAAP applicable to rate-regulated enterprises and reflect the effects of the ratemaking process.


MidAmerican Energy prepares its financial statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, MidAmerican Energy defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.


MidAmerican Energy continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition, that could limit MidAmerican Energy's ability to recover its costs. MidAmerican Energy believes the application of the guidance for regulated operations is appropriate, and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").


282


Fair Value Measurements


As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.



Cash Equivalents and Restricted Cash and Cash Equivalents and Investments


Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted amounts are included in other current assets and investments and restricted cash and investments on the Balance Sheets.


Investments


    Fixed Maturity Securities

MidAmerican Energy's management determines the appropriate classification of investments in debt and equityfixed maturity securities at the acquisition date and reevaluates the classification at each balance sheet date. Investments that management does not intend to use or is restricted from using in current operations are presented as noncurrent on the Balance Sheets.


Available-for-sale securitiesinvestments are carried at fair value with realized gains and losses, as determined on a specific identification basis, recognized in earnings and unrealized gains and losses recognized in AOCI, net of tax. Realized and unrealized gains and losses on fixed maturity securities in a trust related to the decommissioning of the Quad Cities Generating Station Units 1 and 2 ("Quad Cities Station") are recorded as a net regulatory liability because MidAmerican Energy expects to recoverrefund to customers any decommissioning funds in excess of costs for these activities through regulated rates. Trading investments are carried at fair value with changes in fair value recognized in earnings. Held-to-maturity securities are carried at amortized cost, reflecting the ability and intent to hold the securities to maturity. The difference between the original cost and maturity value of a fixed maturity security is amortized to earnings using the interest method.


Investments gains and losses arise when investments are sold (as determined on a specific identification basis) or are other-than-temporarily impaired.impaired with respect to securities classified as available-for-sale. If a decline inthe value of ana fixed maturity investment declines to below amortized cost and the decline is deemed other than temporary, the amortized cost of the investment is written downreduced to fair value, with a corresponding charge to earnings. Factors considered in judging whether an impairment is other than temporary include: the financial condition, business prospects and creditworthiness of the issuer; the relative amount of the decline; MidAmerican Energy's ability and intent to hold the investment until the fair value recovers; and the length of time that fair value has been less than cost. Impairment losses on equity securities are charged to earnings. With respect to an investment in a debt security, anyAny resulting impairment loss is recognized in earnings if MidAmerican Energy intends to sell, or expects to be required to sell, the debt security before its amortized cost is recovered. If MidAmerican Energy does not expect to ultimately recover the amortized cost basis even if it does not intend to sell the security, the credit loss component is recognized in earnings and any difference between fair value and the amortized cost basis, net of the credit loss, is reflected in other comprehensive income (loss) ("OCI"). For regulated investments, any impairment charge is offset by the establishment of a regulatory asset to the extent recovery in regulated rates is probable.


    Equity Securities

All changes in fair value of equity securities in a trust related to the decommissioning of nuclear generation assets are recorded as a net regulatory liability since MidAmerican Energy expects to refund to customers any decommissioning funds in excess of costs for these activities through regulated rates.


283


Allowance for Doubtful AccountsCredit Losses


ReceivablesTrade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for doubtful accounts.credit losses. The allowance for doubtful accountscredit losses is based on MidAmerican Energy's assessment of the collectibilitycollectability of amounts owed to it by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, MidAmerican Energy primarily utilizes credit loss history. However, it may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. As of December 31, 20172020 and 2016,2019, the allowance for doubtful accountscredit losses totaled $7$12 million and $5 million, respectively, and is included in trade receivables, net on the Balance Sheets.


Derivatives


MidAmerican Energy employs a number of different derivative contracts, including forwards, futures, options, swaps and other agreements, to manage price risk for electricity, natural gas and other commodities, and interest rate risk. Derivative contracts are recorded on the Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements. Cash collateral received from or paid to counterparties to secure derivative contract assets or liabilities in excess of amounts offset is included in other current assets on the Balance Sheets.


Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked to market, and settled amounts are recognized as operating revenue or cost of sales on the Statements of Operations.


For MidAmerican Energy's derivatives not designated as hedging contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities.


For MidAmerican Energy's derivatives designated as hedging contracts, MidAmerican Energy formally assesses, at inception and thereafter, whether the hedging contract is highly effective in offsetting changes in the hedged item. MidAmerican Energy formally documents hedging activity by transaction type and risk management strategy. Changes in the estimated fair value of a derivative contract designated and qualified as a cash flow hedge, to the extent effective, are included on the Statements of Changes in Equity as AOCI, net of tax, until the contract settles and the hedged item is recognized in earnings. All of MidAmerican Energy's derivatives designated as cash flow hedges and the related AOCI were transferred to a subsidiary of BHE on January 1, 2016, as discussed in Note 3.


Inventories


Inventories consist mainly of coal stocks,materials and supplies, totaling $117$129 million and $137$128 million as of December 31, 20172020 and 2016,2019, respectively, materials and supplies,coal stocks, totaling $100$119 million and $99$66 million as of December 31, 20172020 and 2016,2019, respectively, and natural gas in storage, totaling $24$26 million and $28 million as of December 31, 20172020 and 2016.2019, respectively. The cost of materials and supplies, coal stocks and fuel oil is determined using the average cost method. The cost of stored natural gas is determined using the last-in-first-out method. With respect to stored natural gas, the replacement cost would be $22$10 million higher and $27$2 million higherlower as of December 31, 20172020 and 2016,2019, respectively.


UtilityProperty, Plant and Equipment, Net


General


Additions to utility plant are recorded at cost. MidAmerican Energy capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include debt allowance for funds used during construction ("AFUDC") and equity AFUDC. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. Additionally, MidAmerican Energy has regulatory arrangements in Iowa in which the carrying cost of certain utility plant has been reduced for amounts associated with electric returns on equity exceeding specified thresholds and retail energy benefits associated with certain wind-powered generation. Amounts expensed under this arrangementthese arrangements are included as a component of depreciation and amortization.


Depreciation and amortization for MidAmerican Energy's utility operations are computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by its various regulatory authorities. Depreciation studies are completed by MidAmerican Energy to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.


284


Generally, when MidAmerican Energy retires or sells a component of utility plant, it charges the original cost, net of any proceeds from the disposition to accumulated depreciation. Any gain or loss on disposals of nonregulated assets is recorded through earnings.


Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of its regulated facilities, is capitalized by MidAmerican Energy as a component of utility plant, with offsetting credits to the Statements of Operations. AFUDC is computed based on guidelines set forth by the FERC. After construction is completed, MidAmerican Energy is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.


Asset Retirement Obligations


MidAmerican Energy recognizes AROs when it has a legal obligation to perform decommissioning or removal activities upon retirement of an asset. MidAmerican Energy's AROs are primarily related to decommissioning of the Quad Cities Station and obligations associated with its other generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to utility plant) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in utility plant, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.



Impairment


MidAmerican Energy evaluates long-lived assets for impairment, including utility plant, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value. The impacts of regulation are considered when evaluating the carrying value of regulated assets. For all other assets, any resulting impairment loss is reflected on the Statements of Operations.


Revenue Recognition


MidAmerican Energy uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which MidAmerican Energy expects to be entitled in exchange for those goods and services. MidAmerican Energy records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Statements of Operations.

A majority of MidAmerican Energy's energy revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission, distribution and natural gas and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided.

Revenue from electric and natural gas customers is recognized as electricity or natural gas is delivered or services are provided. Revenue recognized includes billed and unbilled amounts. As of December 31, 20172020 and 2016,2019, unbilled revenue was $89$95 million and $87$91 million, respectively, and is included in trade receivables, net on the Balance Sheets.


The determination of customer billings is based on a systematic reading of customer meters and applicable rates. At the end of each month, amounts of energy provided to customers since the date of the last meter reading are estimated, and the corresponding unbilled revenue is recorded. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses economic impacts and composition of customer classes. Unbilled revenue is reversed in the following month and billed revenue is recorded based on the subsequent meter readings.

285


All of MidAmerican Energy's regulated retail electric and natural gas sales are subject to energy adjustment clauses. MidAmerican Energy also has costs that are recovered, at least in part, through bill riders, including demand-side management and certain transmission costs. The clauses and riders allow MidAmerican Energy to adjust the amounts charged for electric and natural gas service as the related costs change. The costs recovered in revenue through use of the adjustment clauses and bill riders are charged to expense in the same year the related revenue is recognized. At any given time, these costs may be over or under collected from customers. The total under collection included in trade receivables, net at December 31, 20172020 and 2016,2019, was $72$22 million and $31$56 million, respectively.

MidAmerican Energy collects from its customers sales and excise taxes assessed by governmental authorities on transactions with customers and later remits the collected taxes to the appropriate authority. If the obligation to pay a particular tax resides with the customer, MidAmerican Energy reports such taxes collected on a net basis and, accordingly, they do not affect the Statement of Operations. Taxes for which the obligation resides with MidAmerican Energy are reported on a gross basis in operating revenue and operating expenses. The amounts reported on a gross basis are not material.


Unamortized Debt Premiums, Discounts and Issuance Costs


Premiums, discounts and issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.


Income Taxes


Berkshire Hathaway includes MidAmerican Funding and MidAmerican Energy in its consolidated United States federal and Iowa state income tax return.returns. MidAmerican Funding's and MidAmerican Energy's provisions for income taxes have been computed on a stand-alone basis.


Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using estimatedenacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of OCI are charged or credited directly to OCI. On December 22, 2017, the Tax Cuts and Jobs Act ("2017 Tax Reform") was signed into law which, among other items, reduces the federal corporate tax rate from 35% to 21%. Changes in deferred income tax assets and liabilities that are associated with income tax benefits and expense for the federal tax rate change from 35% to 21%, certain property-related basis differences and other various differences that MidAmerican Energy deems probable to be passed on to its customers in most state jurisdictions are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties or as prescribed by various regulatory jurisdictions.commissions.



In determining MidAmerican Funding's and MidAmerican Energy's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by MidAmerican Energy's various regulatory jurisdictions.commissions. MidAmerican Funding's and MidAmerican Energy's income tax returns are subject to continuous examinations by federal, state and local tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. MidAmerican Funding and MidAmerican Energy recognize the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of their federal, state and local income tax examinations is uncertain, each company believes it has made adequate provisions for its income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on its consolidated financial results. MidAmerican Funding's and MidAmerican Energy's unrecognized tax benefits are primarily included in taxes accrued and other long-term liabilities on their respective Consolidated Balance Sheets. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

New Accounting Pronouncements

In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. MidAmerican Energy adopted this guidance effective January 1, 2018, and the adoption will not have a material impact on its Financial Statements and disclosures included within Notes to Financial Statements.

In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively, wherein the statement of cash flows of each period presented should be adjusted to reflect the new guidance. MidAmerican Energy adopted this guidance effective January 1, 2018, and the adoption will not have a material impact on its Financial Statements and disclosures included within Notes to Financial Statements.

In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. MidAmerican Energy adopted this guidance effective January 1, 2018, and the adoption will not have a material impact on its Financial Statements.

In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. In January 2018, the FASB issued ASU No. 2018-01 that provides for an optional transition practical expedient allowing companies to not have to evaluate existing land easements if they were not previously accounted for under ASC Topic 840, "Leases." This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. MidAmerican Energy plans to adopt this guidance effective January 1, 2019, and is currently evaluating the impact on its Financial Statements and disclosures included within Notes to Financial Statements.


In January 2016, the FASB issued ASU No. 2016-01, which amends FASB ASC Subtopic 825-10, "Financial Instruments - Overall." The amendments in this guidance address certain aspects of recognition, measurement, presentation and disclosure of financial instruments including a requirement that all investments in equity securities that do not qualify for equity method accounting or result in consolidation of the investee be measured at fair value with changes in fair value recognized in net income. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted, and is required to be adopted prospectively by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. MidAmerican Energy adopted this guidance effective January 1, 2018, and the adoption will not have a material impact on its Financial Statements and disclosures included within Notes to Financial Statements.

In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No.2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016 and 2017, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. MidAmerican Energy adopted this guidance effective January 1, 2018, under the modified retrospective method and the adoption will not have an impact on its Financial Statements but will increase the disclosures included within Notes to Financial Statements. The timing and amount of revenue recognized after adoption of the new guidance will not be different than before as a majority of revenue is recognized equal to what MidAmerican Energy has the right to invoice as it corresponds directly with the value to the customer of MidAmerican Energy's performance to date. MidAmerican Energy's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by customer class for each segment.

(3)
Discontinued Operations

On January 1, 2016, MidAmerican Energy transferred the assets and liabilities of its unregulated retail services business to a subsidiary of BHE. The transfer was made at MidAmerican Energy's carrying value of the assets, liabilities and AOCI as of December 31, 2015, totaling $90 million, and was recorded by MidAmerican Energy as a noncash dividend. Financial results of the unregulated retail services business for the year ended December 31, 2015 have been reclassified to discontinued operations in the Statement of Operations. Significant line items constituting pre-tax income from discontinued operations and total cash flows from operating activities for the years ended December 31 are as follows (in millions):
286
  2015
   
Operating revenue $905
Cost of sales $854
   
Cash flows from operating activities $30




(4)(3)Property, Plant and Equipment, Net


Property, plant and equipment, net consists of the following as of December 31 (in millions):

Depreciable Life20202019
Utility plant in service, net:
Generation20-70 years$16,980 $15,687 
Transmission52-75 years2,365 2,124 
Electric distribution20-75 years4,369 4,095 
Natural gas distribution29-75 years1,955 1,820 
Utility plant in service25,669 23,726 
Accumulated depreciation and amortization(6,902)(6,139)
Utility plant in service, net18,767 17,587 
Nonregulated property, net:
Nonregulated property gross20-50 years
Accumulated depreciation and amortization(1)(1)
Nonregulated property, net
18,773 17,593 
Construction work-in-progress506 782 
Property, plant and equipment, net$19,279 $18,375 
 Depreciable Life 2017 2016
      
Utility plant in service:     
Generation20-70 years $12,107
 $11,282
Transmission52-75 years 1,838
 1,726
Electric distribution20-75 years 3,380
 3,197
Gas distribution29-75 years 1,640
 1,565
Utility plant in service  18,965
 17,770
Accumulated depreciation and amortization  (5,561) (5,448)
Utility plant in service, net  13,404
 12,322
Nonregulated property, net:     
Nonregulated property gross20-50 years 7
 7
Accumulated depreciation and amortization  (1) (1)
Nonregulated property, net  6
 6
   13,410
 12,328
Construction work-in-progress  797
 493
Property, plant and equipment, net  $14,207
 $12,821


Nonregulated property, includesnet consists primarily of land computer software and other assets not recoverable for regulated utility purposes.


The average depreciation and amortization rates applied to depreciable utility plant for the years ended December 31 were as follows:
202020192018
Electric3.2 %3.1 %2.9 %
Natural gas2.8 %2.8 %2.8 %


287
 2017 2016 2015
      
Electric2.6% 2.8% 3.0%
Gas2.7% 2.9% 2.9%



During the fourth quarter of 2016, MidAmerican Energy revised its electric and gas depreciation rates based on the results of a new depreciation study, the most significant impact of which was longer estimated useful lives for certain wind-powered generating facilities. The effect of this change was to reduce depreciation and amortization expense by $3 million in 2016 and $34 million annually based on depreciable plant balances at the time of the change.


(5)(4)Jointly Owned Utility Facilities


Under joint facility ownership agreements with other utilities, MidAmerican Energy, as a tenant in common, has undivided interests in jointly owned generation and transmission facilities. MidAmerican Energy accounts for its proportionate share of each facility, and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Statements of Operations include MidAmerican Energy's share of the expenses of these facilities.


The amounts shown in the table below represent MidAmerican Energy's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 20172020 (dollars in millions):
AccumulatedConstruction
CompanyPlant inDepreciation andWork-in-
ShareServiceAmortizationProgress
Louisa Unit No. 188 %$853 $483 $
Quad Cities Unit Nos. 1 & 2(1)
25 731 437 10 
Walter Scott, Jr. Unit No. 379 939 498 
Walter Scott, Jr. Unit No. 4(2)
60 267 130 
George Neal Unit No. 441 318 179 
Ottumwa Unit No. 152 669 247 
George Neal Unit No. 372 524 262 
Transmission facilitiesVarious261 101 
Total$4,562 $2,337 $32 
(1)Includes amounts related to nuclear fuel.
(2)Plant in service and accumulated depreciation and amortization amounts are net of credits applied under Iowa regulatory arrangements totaling $509 million and $112 million, respectively.

(5)    Regulatory Matters
     Accumulated Construction
 Company Plant in Depreciation and Work-in-
 Share Service Amortization Progress
        
Louisa Unit No. 188% $807
 $432
 $8
Quad Cities Unit Nos. 1 & 2(1)
25
 698
 387
 20
Walter Scott, Jr. Unit No. 379
 617
 316
 8
Walter Scott, Jr. Unit No. 4(2)
60
 456
 112
 1
George Neal Unit No. 441
 307
 159
 1
Ottumwa Unit No. 152
 567
 206
 40
George Neal Unit No. 372
 425
 183
 7
Transmission facilitiesVarious
 249
 87
 1
Total  $4,126
 $1,882
 $86
(1)Includes amounts related to nuclear fuel.
(2)Plant in service and accumulated depreciation and amortization amounts are net of credits applied under Iowa revenue sharing arrangements totaling $319 million and $81 million, respectively.


Regulatory Assets
(6)Regulatory Matters


Regulatory assets represent costs that are expected to be recovered in future regulated rates. MidAmerican Energy's regulatory assets reflected on the Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Asset retirement obligations(1)
6 years$298 $223 
Employee benefit plans(2)
15 years66 26 
Unrealized loss on regulated derivative contracts1 year
OtherVarious28 33 
Total$392 $289 
 Average    
 Remaining Life 2017 2016
      
Deferred income taxes, net(1)
N/A $
 $985
Asset retirement obligations(2)
10 years 133
 105
Employee benefit plans(3)
13 years 38
 40
Unrealized loss on regulated derivative contracts1 year 6
 2
OtherVarious 27
 29
Total  $204
 $1,161
(1)Amount predominantly relates to AROs for fossil-fueled and wind-powered generating facilities. Refer to Note 11 for a discussion of AROs.
(1)Amounts primarily represent income tax benefits related to state accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.
(2)Amount predominantly relates to asset retirement obligations for fossil-fueled and wind-powered generating facilities. Refer to Note 12 for a discussion of asset retirement obligations.
(3)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.

(2)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.

MidAmerican Energy had regulatory assets not earning a return on investment of $200$389 million and $1.2 billion$286 million as of December 31, 20172020 and 2016,2019, respectively.



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Regulatory Liabilities

Regulatory liabilities represent income to be recognized or amounts expected to be returned to customers in future periods. MidAmerican Energy's regulatory liabilities reflected on the Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Cost of removal accrual(1)
29 years$466 $572 
Asset retirement obligations(2)
32 years300 241 
Deferred income taxes(3)
Various263 478 
Pre-funded AFUDC on transmission MVPs(4)
52 years35 35 
Employee benefit plans(5)
9 years20 32 
Iowa electric revenue sharing accrual(6)
1 year22 
OtherVarious27 26 
Total$1,111 $1,406 
(1)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing utility plant in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.
(2)Amount represents the excess of nuclear decommission trust assets over the related ARO. Refer to Note 11 for a discussion of AROs.
(3)Amounts primarily represent income tax liabilities primarily related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to state accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.
(4)Represents AFUDC accrued on transmission MVPs that is deducted from rate base as a result of the inclusion of related construction work-in-progress in rate base.
(5)Represents amounts not yet recognized as a component of net periodic benefit cost that are to be returned to customers in future periods when recognized.
(6)Represents current-year accruals under a regulatory arrangement in Iowa in which equity returns exceeding specified thresholds reduce utility plant upon final determination.

(6)Investments and Restricted Investments
 Average    
 Remaining Life 2017 2016
      
Cost of removal accrual(1)
28 years $688
 $665
Deferred income taxes(2)
28 years 681
 
Asset retirement obligations(3)
35 years 173
 117
Employee benefit plans(4)
11 years 41
 12
Pre-funded AFUDC on transmission MVPs(5)
55 years 35
 35
Iowa electric revenue sharing accrual(6)
1 year 26
 30
Unrealized gain on regulated derivative contracts1 year 3
 6
OtherVarious 14
 18
Total  $1,661
 $883
(1)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing utility plant in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.
(2)
Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to state accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse. See Note 10 for further discussion of 2017 Tax Reform impacts.
(3)Amount predominantly represents the excess of nuclear decommission trust assets over the related asset retirement obligation. Refer to Note 12 for a discussion of asset retirement obligations.
(4)Represents amounts not yet recognized as a component of net periodic benefit cost that are to be returned to customers in future periods when recognized.
(5)Represents AFUDC accrued on transmission MVPs that is deducted from rate base as a result of the inclusion of related construction work-in-progress in rate base.
(6)Represents current-year accruals under a regulatory arrangement in Iowa in which equity returns exceeding specified thresholds reduce utility plant upon final determination.

(7)Investments and Restricted Cash and Investments


Investments and restricted cash and investments consists of the following amounts as of December 31 (in millions):
20202019
Nuclear decommissioning trust$676 $599 
Rabbi trusts211 203 
Other24 16 
Total$911 $818 
 2017 2016
    
Nuclear decommissioning trust$515
 $460
Rabbi trusts198
 184
Other15
 9
Total$728
 $653


MidAmerican Energy has established a trust for the investment of funds for decommissioning the Quad Cities Station. These investments inThe debt and equity securities are classified as available-for-sale andin the trust are reported at fair value. Funds are invested in the trust in accordance with applicable federal and state investment guidelines and are restricted for use as reimbursement for costs of decommissioning the Quad Cities Station, which is currently licensed for operation until December 2032. As of December 31, 20172020 and 2016,2019, the fair value of the trust's funds was invested as follows: 56% and 54%56%, respectively, in domestic common equity securities, 34%30% and 35%31%, respectively, in United States government securities, 7%11% and 8%10%, respectively, in domestic corporate debt securities and 3% and 3%, respectively, in other securities.


Rabbi trusts primarily hold corporate-owned life insurance on certain current and former key executives and directors. The Rabbi trusts were established to hold investments used to fund the obligations of various nonqualified executive and director compensation plans and to pay the costs of the trusts. The amount represents the cash surrender value of all of the policies included in the Rabbi trusts, net of amounts borrowed against the cash surrender value. Changes in the cash surrender value of the policies are reflected in other income and (expense) - other, net on the Statements of Operation.

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(8)Short-Term


(7)Short-term Debt and Credit Facilities


Interim financing of working capital needs and the construction program is obtained from unaffiliated parties through the sale of commercial paper or short-term borrowing from banks. The following table summarizes MidAmerican Energy's availability under its unsecured revolving credit facilities as of December 31 (in millions):
20202019
Credit facilities$1,505 $1,305 
Less:
Variable-rate tax-exempt bond support(370)(370)
Net credit facilities$1,135 $935 

MidAmerican Energy has a $900 million unsecured credit facility expiring June 2020 with two one-year extension options subject to lender consent.2022. The credit facility, which supports MidAmerican Energy's commercial paper program and its variable-rate tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread that varies based on MidAmerican Energy's credit ratings for senior unsecured long-term debt securities. In addition,MidAmerican Energy has a $600 million unsecured credit facility, which expires May 2021, with an option to extend for up to three months, and has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread. Additionally, MidAmerican Energy has a $5 million unsecured credit facility, which expires in June 20182021 and has a variable interest rate based on LIBORthe Eurodollar rate plus a spread. As of December 31, 2016, the weighted average interest rate on2019, MidAmerican Energy had a $400 million unsecured credit facility expiring August 2020, which was terminated in May 2020. MidAmerican Energy had no commercial paper borrowings outstanding was 0.73%.of as of December 31, 2020 and 2019. The $900 million and $600 million credit facility requiresfacilities each require that MidAmerican Energy's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of any quarter. As of December 31, 2017,2020, MidAmerican Energy was in compliance with the covenants of its credit facilities. MidAmerican Energy has authority from the FERC to issue commercial paper and bank notes aggregating $905 million$1.5 billion through February 28, 2019.April 2, 2022.


The following table summarizes MidAmerican Energy's availability under its two unsecured revolving credit facilities as of December 31 (in millions):
290
 2017 2016
    
Credit facilities$905
 $605
Less:   
Short-term debt outstanding
 (99)
Variable-rate tax-exempt bond support(370) (220)
Net credit facilities$535
 $286



(8)Long-term Debt

(9)Long-Term Debt


MidAmerican Energy's long-term debt consists of the following, including amounts maturing within one year and unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
First mortgage bonds:
3.70%, due 2023$250 $249 $249 
3.50%, due 2024500 501 501 
3.10%, due 2027375 373 373 
3.65%, due 2029850 862 864 
4.80%, due 2043350 346 346 
4.40%, due 2044400 395 395 
4.25%, due 2046450 445 445 
3.95%, due 2047475 470 470 
3.65%, due 2048700 689 688 
4.25%, due 2049900 873 872 
3.15%, due 2050600 592 591 
Notes:
6.75% Series, due 2031400 397 396 
5.75% Series, due 2035300 298 298 
5.80% Series, due 2036350 348 348 
Transmission upgrade obligation, 4.45% and 3.42% due through 2035 and 2036, respectively
Variable-rate tax-exempt bond obligation series: (weighted average interest rate- 2020-0.14%, 2019-1.66%):
Due 2023, issued in 1993
Due 2023, issued in 200857 57 57 
Due 202435 35 35 
Due 202513 13 13 
Due 203633 33 33 
Due 203845 45 45 
Due 204630 29 29 
Due 2047150 149 149 
Total$7,276 $7,210 $7,208 
 Par Value 2017 2016
      
First mortgage bonds:     
2.40%, due 2019$500
 $499
 $499
3.70%, due 2023250
 248
 248
3.50%, due 2024500
 501
 501
3.10%, due 2027375
 372
 
4.80%, due 2043350
 346
 345
4.40%, due 2044400
 394
 394
4.25%, due 2046450
 445
 445
3.95%, due 2047475
 470
 
Notes:     
5.95% Series, due 2017
 
 250
5.3% Series, due 2018350
 350
 350
6.75% Series, due 2031400
 396
 396
5.75% Series, due 2035300
 298
 298
5.8% Series, due 2036350
 347
 347
Transmission upgrade obligation, 4.45% and 3.42% due through 2035 and 2036, respectively8
 6
 7
Variable-rate tax-exempt bond obligation series: (weighted average interest rate- 2017-1.91%, 2016-0.76%):     
Due 2023, issued in 19937
 7
 7
Due 2023, issued in 200857
 57
 57
Due 202435
 35
 35
Due 202513
 13
 13
Due 203633
 33
 33
Due 203845
 45
 45
Due 204630
 29
 29
Due 2047150
 149
 
Capital lease obligations - 4.16%, due through 20202
 2
 2
Total$5,080
 $5,042
 $4,301


The annual repayments of MidAmerican Energy's long-term debt for the years beginning January 1, 2018,2021, and thereafter, excluding unamortized premiums, discounts and debt issuance costs, are as follows (in millions):
2021$
2022
2023315 
2024535 
202513 
2026 and thereafter6,413 
2018 $350
2019 501
2020 2
2021 
2022 
2023 and thereafter 4,227

In February 2018, MidAmerican Energy issued $700 million of its 3.65% First Mortgage Bonds due August 2048.



Pursuant to MidAmerican Energy's mortgage dated September 9, 2013, MidAmerican Energy's first mortgage bonds, currently and from time to time outstanding, are secured by a first mortgage lien on substantially all of its electric generating, transmission and distribution property within the State of Iowa, subject to certain exceptions and permitted encumbrances. As of December 31, 2017,2020, MidAmerican Energy's eligible property subject to the lien of the mortgage totaled approximately $16$22 billion based on original cost. Additionally, MidAmerican Energy's senior notes outstanding are equally and ratably secured with the first mortgage bonds as required by the indentures under which the senior notes were issued.

291


MidAmerican Energy's variable-rate tax-exempt bond obligations bear interest at rates that are periodically established through remarketing of the bonds in the short-term tax-exempt market. MidAmerican Energy, at its option, may change the mode of interest calculation for these bonds by selecting from among several floating or fixed rate alternatives. The interest rates shown in the table above are the weighted average interest rates as of December 31, 20172020 and 2016.2019. MidAmerican Energy maintains revolving credit facility agreements to provide liquidity for holders of these issues. Additionally, MidAmerican Energy's obligations associated with the $30 million and $150 million variable rate, tax-exempt bond obligations due 2046 and 2047, respectively, are secured by an equal amount of first mortgage bonds pursuant to MidAmerican Energy's mortgage dated September 9, 2013, as supplemented and amended. In December 2017, the Iowa Finance Authority issued $150 million of its variable-rate, tax-exempt Solid Waste Facilities Revenue Bonds due December 2047, the proceeds of which were loaned to MidAmerican Energy and restricted for the purpose of constructing solid waste facilities. As of December 31, 2017, $108 million of the restricted proceeds are reflected in other current assets on the Balance Sheet.


As of December 31, 2017,2020, MidAmerican Energy was in compliance with all of its applicable long-term debt covenants.


In March 1999, MidAmerican Energy committed to the IUB to use commercially reasonable efforts to maintain an investment grade rating on its long-term debt and to maintain its common equity level above 42% of total capitalization unless circumstances beyond its control result in the common equity level decreasing to below 39% of total capitalization. MidAmerican Energy must seek the approval from the IUB of a reasonable utility capital structure if MidAmerican Energy's common equity level decreases below 42% of total capitalization, unless the decrease is beyond the control of MidAmerican Energy. MidAmerican Energy is also required to seek the approval of the IUB if MidAmerican Energy's equity level decreases to below 39%, even if the decrease is due to circumstances beyond the control of MidAmerican Energy. As of December 31, 2017,2020, MidAmerican Energy's common equity ratio was 53%52% computed on a basis consistent with its commitment. As a result of its regulatory commitment to maintain its common equity level above certain thresholds, MidAmerican Energy could dividend $2.1$2.8 billion as of December 31, 2017,2020, without falling below 42%.


(10)Income Taxes

Tax Cuts and Jobs Act(9)Income Taxes

The 2017 Tax Reform impacts many areas of income tax law. The most material items include the reduction of the federal corporate tax rate from 35% to 21% effective January 1, 2018 and limitations on bonus depreciation for utility property. GAAP requires the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. As a result of the 2017 Tax Reform, MidAmerican Energy reduced deferred income tax liabilities $1,824 million. As it is probable the change in deferred taxes will be passed back to customers through regulatory mechanisms, MidAmerican Energy increased net regulatory liabilities by $1,845 million.

In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. MidAmerican Energy has recorded the impacts of 2017 Tax Reform and believes all the impacts to be complete with the exception of interpretations of the bonus depreciation rules. MidAmerican Energy has determined the amounts recorded and the interpretations relating to this item to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. MidAmerican Energy believes its interpretations for bonus depreciation to be reasonable; however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.



MidAmerican Energy's income tax benefit from continuing operations consists of the following for the years ended December 31 (in millions):
202020192018
Current:
Federal$(684)$(478)$(276)
State(94)(47)(12)
(778)(525)(288)
Deferred:
Federal201 166 42 
State(11)(8)
209 155 34 
Investment tax credits(1)(1)(1)
Total$(570)$(371)$(255)
 2017 2016 2015
Current:     
Federal$(490) $(479) $(415)
State(25) (14) (6)
 (515) (493) (421)
Deferred:     
Federal335
 366
 281
State(2) (4) (6)
 333
 362
 275
      
Investment tax credits(1) (1) (1)
Total$(183) $(132) $(147)


A reconciliation of the federal statutory income tax rate to MidAmerican Energy's effective income tax rate applicable to income before income tax benefit from continuing operations is as follows for the years ended December 31:
202020192018
Federal statutory income tax rate21 %21 %21 %
Income tax credits(199)(90)(73)
State income tax, net of federal income tax benefit(27)(11)(4)
Effects of ratemaking(17)(8)(5)
Other, net(1)
Effective income tax rate(223)%(88)%(60)%


292

 2017 2016 2015
      
Federal statutory income tax rate35 % 35 % 35 %
Income tax credits(68) (61) (71)
State income tax, net of federal income tax benefit(4) (3) (2)
Effects of ratemaking(7) (3) (12)
2017 Tax Reform2
 
 
Other, net(1) 
 1
Effective income tax rate(43)% (32)% (49)%


Income tax credits relate primarily to production tax credits ("PTC") earned by MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity production tax creditsPTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Interim recognition of production tax credits in income is based on the annualized effective tax rate applied each period, similar to all book to tax differences. Recognition of production tax credits in income during interim periods of the year may vary significantly from actual amounts earned. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in service.in-service.



MidAmerican Energy's net deferred income tax liability consists of the following as of December 31 (in millions):
20202019
Deferred income tax assets:
Regulatory liabilities$288 $368 
Asset retirement obligations229 234 
State carryforwards52 51 
Employee benefits42 26 
Other40 34 
Total deferred income tax assets651 713 
Valuation allowances(25)(14)
Total deferred income tax assets, net626 699 
Deferred income tax liabilities:
Depreciable property(3,583)(3,253)
Regulatory assets(97)(68)
Other(4)
Total deferred income tax liabilities(3,680)(3,325)
Net deferred income tax liability$(3,054)$(2,626)
 2017 2016
Deferred income tax assets:   
Regulatory liabilities$443
 $333
Asset retirement obligations160
 230
Employee benefits45
 66
Other57
 74
Total deferred income tax assets705
 703
    
Deferred income tax liabilities:   
Depreciable property(2,865) (3,763)
Regulatory assets(42) (471)
Other(35) (41)
Total deferred income tax liabilities(2,942) (4,275)
    
Net deferred income tax liability$(2,237) $(3,572)


As of December 31, 2017,2020, MidAmerican Energy has available $40 million ofEnergy's state tax carryforwards, principally related to $583$768 million of net operating losses, that expire at various intervals between 20182021 and 2036.2039.


The United States Internal Revenue Service has closed or effectively settled its examination of BHE'sMidAmerican Energy's income tax returns through December 31, 2009, including components related to2013. The statute of limitations for MidAmerican Energy. In addition,Energy's state jurisdictions have closed their examinations of MidAmerican Energy's income tax returns for Iowahave expired through December 31, 2013,2011, for IllinoisMichigan and Nebraska, and through December 31, 2008,2016, for Illinois, Indiana, Iowa, Kansas and Missouri, except for other jurisdictions through December 31, 2009.the impact of any federal audit adjustments. The statute of limitations expiring for state filings may not preclude the state from adjusting the state net operating loss carryforward utilized in a year for which the statute of limitations is not closed.


A reconciliation of the beginning and ending balances of MidAmerican Energy's net unrecognized tax benefits is as follows for the years ended December 31 (in millions):
20202019
Beginning balance$$10 
Additions based on tax positions related to the current year
Additions for tax positions of prior years10 
Reductions based on tax positions related to the current year(3)(5)
Reductions for tax positions of prior years(1)(12)
Ending balance$$
 2017 2016
    
Beginning balance$10
 $10
Additions based on tax positions related to the current year1
 
Additions for tax positions of prior years23
 10
Reductions based on tax positions related to the current year(4) (2)
Reductions for tax positions of prior years(19) (8)
Interest and penalties1
 
Ending balance$12
 $10


As of December 31, 2017,2020, MidAmerican Energy had unrecognized tax benefits totaling $38$26 million that, if recognized, would have an impact on the effective tax rate. The remaining unrecognized tax benefits relate to tax positions for which ultimate deductibility is highly certain but for which there is uncertainty as to the timing of such deductibility. Recognition of these tax benefits, other than applicable interest and penalties, would not affect MidAmerican Energy's effective income tax rate.


293
(11)Employee Benefit Plans



(10)Employee Benefit Plans

Defined Benefit Plan

MidAmerican Energy sponsors a noncontributory defined benefit pension plan covering a majority of all employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy, Inc. Benefit obligations under the plan are based on a cash balance arrangement for salaried employees and most union employees and final average pay formulas for other union employees. MidAmerican Energy also maintains noncontributory, nonqualified defined benefit supplemental executive retirement plans ("SERP") for certain active and retired participants. In 2018, the defined benefit pension plan recorded a settlement gain of $1 million for previously unrecognized gains as a result of excess lump sum distributions over the defined threshold for the year ended December 31, 2018.



MidAmerican Energy also sponsors certain postretirement healthcare and life insurance benefits covering substantially all retired employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy, Inc. Under the plans, a majority of all employees of the participating companies may become eligible for these benefits if they reach retirement age. New employees are not eligible for benefits under the plans. MidAmerican Energy has been allowed to recover accrued pension and other postretirement benefit costs in its electric and gas service rates.


On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy, Inc. and Dominion Energy Questar Corporation, exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "GT&S Transaction"). Defined benefit pension and postretirement benefits provided to the employees of GT&S are administered in the respective plans sponsored by MidAmerican Energy. Initial pension and postretirement plan liabilities of $81 million and $37 million, respectively, resulted from the GT&S Transaction and are included in plan obligations and affiliate receivables on MidAmerican Energy's Balance Sheet.

Net Periodic Benefit Cost


For purposes of calculating the expected return on pension plan assets, a market-related value is used. The market-related value of plan assets is calculated by spreading the difference between expected and actual investment returns on equity investments over a five-year period beginning after the first year in which they occur.


MidAmerican Energy bills to and is reimbursed currently for affiliates' share of the net periodic benefit costs from all plans in which such affiliates participate. In 2017, 20162020, 2019 and 2015,2018, MidAmerican Energy's share of the pension net periodic benefit (credit) cost (credit) was $(6)$(13) million, $(2)$(8) million and $(4)$(9) million, respectively. MidAmerican Energy's share of the other postretirement net periodic benefit (credit) cost (credit) in 2017, 20162020, 2019 and 20152018 totaled $(1)$(5) million, $(1)$1 million and $-$(2) million, respectively.


Net periodic benefit cost for the plans of MidAmerican Energy and the aforementioned affiliates included the following components for the years ended December 31 (in millions):
PensionOther Postretirement
202020192018202020192018
Service cost$$$$$$
Interest cost25 30 28 10 
Expected return on plan assets(40)(41)(44)(14)(13)(13)
Settlement— — (1)— — — 
Net amortization(5)(3)(4)
Net periodic benefit (credit) cost$(6)$(4)$(6)$(8)$(1)$(4)


294

 Pension Other Postretirement
 2017 2016 2015 2017 2016 2015
            
Service cost$9
 $10
 $12
 $5
 $5
 $7
Interest cost31
 34
 32
 9
 10
 9
Expected return on plan assets(44) (44) (46) (14) (13) (15)
Net amortization2
 2
 2
 (4) (4) (3)
Net periodic benefit (credit) cost$(2) $2
 $
 $(4) $(2) $(2)


Funded Status


The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, beginning of year$717 $644 $272 $247 
Employer contributions
Participant contributions
Actual return on plan assets55 123 15 42 
Benefits paid(60)(57)(13)(20)
Plan assets at fair value, end of year$718 $717 $278 $272 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Plan assets at fair value, beginning of year$684
 $678
 $252
 $249
Employer contributions7
 7
 1
 1
Participant contributions
 
 1
 1
Actual return on plan assets114
 57
 36
 14
Benefits paid(60) (58) (13) (13)
Plan assets at fair value, end of year$745
 $684
 $277
 $252



The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):
PensionOther Postretirement
2020201920202019
Benefit obligation, beginning of year$763 $736 $226 $242 
Service cost
Interest cost25 30 10 
Participant contributions
Actuarial (gain) loss28 48 42 (13)
Acquisition81 37 
Benefits paid(60)(57)(13)(20)
Benefit obligation, end of year$845 $763 $304 $226 
Accumulated benefit obligation, end of year$773 $758 
 Pension Other Postretirement
 2017 2016 2017 2016
        
Benefit obligation, beginning of year$773
 $785
 $233
 $234
Service cost9
 10
 5
 5
Interest cost31
 34
 9
 10
Participant contributions
 
 1
 1
Actuarial loss (gain)46
 2
 11
 (4)
Benefits paid(60) (58) (13) (13)
Benefit obligation, end of year$799
 $773
 $246
 $233
Accumulated benefit obligation, end of year$790
 $764
    


The funded status of the plans and the amounts recognized on the Balance Sheets as of December 31 are as follows (in millions):
PensionOther Postretirement
2020201920202019
Plan assets at fair value, end of year$718 $717 $278 $272 
Less - Benefit obligation, end of year845 763 304 226 
Funded status$(127)$(46)$(26)$46 
Amounts recognized on the Balance Sheets:
Other assets$$66 $$46 
Other current liabilities(7)(7)
Other liabilities(120)(105)(26)
Amounts recognized$(127)$(46)$(26)$46 


295

 Pension Other Postretirement
 2017 2016 2017 2016
        
Plan assets at fair value, end of year$745
 $684
 $277
 $252
Less - Benefit obligation, end of year799
 773
 246
 233
Funded status$(54) $(89) $31
 $19
        
Amounts recognized on the Balance Sheets:       
Other assets$66
 $26
 $31
 $19
Other current liabilities(8) (8) 
 
Other liabilities(112) (107) 
 
Amounts recognized$(54) $(89) $31
 $19


The SERP has no plan assets; however, MidAmerican Energy hasand BHE have Rabbi trusts that hold corporate-owned life insurance and other investments to provide funding for the future cash requirements of the SERP. The cash surrender value of all of the policies included in theMidAmerican Energy's Rabbi trusts, net of amounts borrowed against the cash surrender value, plus the fair market value of other Rabbi trust investments, was $118$130 million and $110$122 million as of December 31, 20172020 and 2016, respectively.2019. These assets are not included in the plan assets in the above table, but are reflected in investments and restricted cash and investments on the Balance Sheets. The accumulated benefit obligation and projected benefit obligation for the SERP was $117 million and $117 million for 2020 and $112 million and $112 million for 2019, respectively.


Unrecognized Amounts


The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
PensionOther Postretirement
2020201920202019
Net loss (gain)$18 $$45 $
Prior service cost (credit)(1)(9)(14)
Total$18 $$36 $(10)
 Pension Other Postretirement
 2017 2016 2017 2016
        
Net (gain) loss$(11) $15
 $23
 $36
Prior service cost (credit)1
 1
 (25) (31)
Total$(10) $16
 $(2) $5


MidAmerican Energy sponsors pension and other postretirement benefit plans on behalf of certain of its affiliates in addition to itself, and therefore, the portion of the funded status of the respective plans that has not yet been recognized in net periodic benefit cost is attributable to multiple entities. Additionally, substantially all of MidAmerican Energy's portion of such amounts is either refundable to or recoverable from its customers and is reflected as regulatory liabilities and regulatory assets.



A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 20172020 and 20162019 is as follows (in millions):
Regulatory
Asset
Regulatory
Liability
Receivables
(Payables)
with Affiliates
Total
Pension
Balance, December 31, 2018$25 $$16 $41 
Net (gain) loss arising during the year(5)(32)(35)
Net amortization(1)(1)
Total(6)(32)(36)
Balance, December 31, 201919 (32)18 
Net loss (gain) arising during the year12 (1)14 
Net amortization(1)(1)
Total12 (1)13 
Balance, December 31, 2020$21 $(20)$17 $18 

296


 
Regulatory
Asset
 
Regulatory
Liability
 
Receivables
(Payables)
with Affiliates
 Total
Pension       
Balance, December 31, 2015$22
 $
 $6
 $28
Net loss (gain) arising during the year1
 (11) 
 (10)
Net amortization(1) (1) 
 (2)
Total
 (12) 
 (12)
Balance, December 31, 201622
 (12) 6
 16
Net loss (gain) arising during the year4
 (29) 1
 (24)
Net amortization(2) 
 
 (2)
Total2
 (29) 1
 (26)
Balance, December 31, 2017$24
 $(41) $7
 $(10)
Regulatory
Asset
Receivables
(Payables)
with Affiliates
Total
Other Postretirement
Balance, December 31, 2018$37 $(9)$28 
Net gain arising during the year(33)(9)(42)
Net amortization
Total(30)(8)(38)
Balance, December 31, 2019(17)(10)
Net loss arising during the year34 41 
Net amortization
Total38 46 
Balance, December 31, 2020$45 $(9)$36 

 
Regulatory
Asset
 
Receivables
(Payables)
with Affiliates
 Total
Other Postretirement     
Balance, December 31, 2015$17
 $(11) $6
Net gain arising during the year(2) (3) (5)
Net amortization3
 1
 4
Total1
 (2) (1)
Balance, December 31, 201618
 (13) 5
Net gain arising during the year(7) (4) (11)
Net amortization3
 1
 4
Total(4) (3) (7)
Balance, December 31, 2017$14
 $(16) $(2)

The net loss and prior service cost (credit) that will be amortized in 2018 into net periodic benefit cost are estimated to be as follows (in millions):
 
Net
Loss
 
Prior
Service
Cost (Credit)
 Total
      
Pension$1
 $1
 $2
Other postretirement1
 (5) (4)
Total$2
 $(4) $(2)



Plan Assumptions


Assumptions used to determine benefit obligations and net periodic benefit cost were as follows:
PensionOther Postretirement
202020192018202020192018
Benefit obligations as of December 31:
Discount rate2.75 %3.40 %4.25 %2.65 %3.20 %4.15 %
Rate of compensation increase2.75 %2.75 %2.75 %N/AN/AN/A
Interest crediting rates for cash balance plan
   2018N/AN/A2.26 %N/AN/AN/A
   2019N/A3.40 %3.40 %N/AN/AN/A
   20202.27 %2.27 %3.40 %N/AN/AN/A
   20210.99 %2.27 %3.40 %N/AN/AN/A
   20220.99 %2.27 %3.40 %N/AN/AN/A
   2023 and beyond0.99 %2.27 %3.40 %N/AN/AN/A
Net periodic benefit cost for the years ended December 31:
Discount rate3.40 %4.25 %3.60 %3.20 %4.15 %3.50 %
Expected return on plan assets(1)
6.25 %6.50 %6.50 %6.00 %6.25 %6.25 %
Rate of compensation increase2.75 %2.75 %2.75 %N/AN/AN/A
Interest crediting rates for cash balance plan2.27 %3.40 %2.26 %N/AN/AN/A
 Pension Other Postretirement
 2017 2016 2015 2017 2016 2015
Benefit obligations as of December 31:           
Discount rate3.60% 4.10% 4.50% 3.50% 3.90% 4.25%
Rate of compensation increase2.75% 2.75% 2.75% N/A
 N/A
 N/A
            
Net periodic benefit cost for the years ended December 31:           
Discount rate4.10% 4.50% 4.00% 3.90% 4.25% 3.75%
Expected return on plan assets(1)
6.75% 7.00% 7.25% 6.50% 6.75% 7.00%
Rate of compensation increase2.75% 2.75% 2.75% N/A
 N/A
 N/A
(1)Amounts reflected are pretax values. Assumed after-tax returns for a taxable, non-union other postretirement plan were 4.62% for 2020, 4.62% for 2019, and 4.13% for 2018.
(1)Amounts reflected are pre-tax values. Assumed after-tax returns for a taxable, non-union other postretirement plan were 4.81% for 2017, and 5.00% for 2016, and 5.18% for 2015.


In establishing its assumption as to the expected return on plan assets, MidAmerican Energy utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.
20202019
Assumed healthcare cost trend rates as of December 31:
Healthcare cost trend rate assumed for next year6.20 %6.50 %
Rate that the cost trend rate gradually declines to5.00 %5.00 %
Year that the rate reaches the rate it is assumed to remain at20252025
 2017 2016
Assumed healthcare cost trend rates as of December 31:   
Healthcare cost trend rate assumed for next year7.10% 7.40%
Rate that the cost trend rate gradually declines to5.00% 5.00%
Year that the rate reaches the rate it is assumed to remain at2025 2025


A one percentage-point change in assumed healthcare cost trend rates would have the following effects (in millions):
297

 One Percentage-Point
 Increase Decrease
Increase (decrease) in: 
Total service and interest cost for the year ended December 31, 2017$
 $
Other postretirement benefit obligation as of December 31, 20173
 (3)


Contributions and Benefit Payments


Employer contributions to the pension and other postretirement benefit plans are expected to be $8$7 million and $1$12 million, respectively, during 2018.2021. Funding to MidAmerican Energy's qualified pension benefit plan trust is based upon the actuarially determined costs of the plan and the requirements of the Internal Revenue Code, the Employee Retirement Income Security Act of 1974 and the Pension Protection Act of 2006, as amended. MidAmerican Energy considers contributing additional amounts from time to time in order to achieve certain funding levels specified under the Pension Protection Act of 2006, as amended. MidAmerican Energy's funding policy forEnergy evaluates a variety of factors, including funded status, income tax laws and regulatory requirements, in determining contributions to its other postretirement benefit plan is to generally contribute amounts consistent with its rate regulatory arrangements.plans.



Net periodic benefit costs assigned to MidAmerican Energy affiliates are reimbursed currently in accordance with its intercompany administrative services agreement. The expected benefit payments to participants in MidAmerican Energy's pension and other postretirement benefit plans for 20172021 through 20212025 and for the five years thereafter are summarized below (in millions):
Projected Benefit Payments
PensionOther Postretirement
2021$64 $20 
202262 21 
202360 22 
202458 23 
202556 22 
2026-2030248 104 
 Projected Benefit Payments
 Pension Other Postretirement
    
2018$60
 $19
201961
 20
202060
 21
202159
 22
202257
 21
2023-2027256
 98


Plan Assets


Investment Policy and Asset Allocations


MidAmerican Energy's investment policy for its pension and other postretirement benefit plans is to balance risk and return through a diversified portfolio of debt securities, equity securities and other alternative investments. Maturities for debt securities are managed to targets consistent with prudent risk tolerances. The plans retain outside investment advisors to manage plan investments within the parameters outlined by the MidAmericanBerkshire Hathaway Energy Pension and Employee Benefits Plans AdministrativeCompany Investment Committee. The investment portfolio is managed in line with the investment policy with sufficient liquidity to meet near-term benefit payments.


The target allocations (percentage of plan assets) for MidAmerican Energy's pension and other postretirement benefit plan assets are as follows as of December 31, 2017:
2020:
Pension
Other
Postretirement
%%
Debt securities(1)
50-8060-70
Equity securities(1)
20-5025-4530-40
Equity securities(1)
60-8045-80
Real estate funds2-80-5
Other0-30-50-5

(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.



(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.


298


Fair Value Measurements


The following table presents the fair value of plan assets, by major category, for MidAmerican Energy's defined benefit pension plan (in millions):
Input Levels for Fair Value Measurements(1)
Level 1Level 2Level 3Total
As of December 31, 2020:
Cash equivalents$$26 $$26 
Debt securities:
United States government obligations14 14 
Corporate obligations160 160 
Municipal obligations17 17 
Equity securities:
United States companies65 65 
Total assets in the hierarchy$79 $203 $282 
Investment funds(2) measured at net asset value
393 
Real estate funds measured at net asset value43 
Total assets measured at fair value$718 
As of December 31, 2019:
Cash equivalents$21 $$$21 
Debt securities:
United States government obligations16 16 
Corporate obligations61 61 
Municipal obligations
Agency, asset and mortgage-backed obligations33 33 
Equity securities:
United States companies129 129 
International companies42 42 
Investment funds(2)
69 69 
Total assets in the hierarchy$277 $99 $376 
Investment funds(2) measured at net asset value
299 
Real estate funds measured at net asset value42 
Total assets measured at fair value$717 
(1)Refer to Note 12 for additional discussion regarding the three levels of the fair value hierarchy.
(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 65% and 35%, respectively, for 2020 and 69% and 31%, respectively, for 2019. Additionally, these funds are invested in United States and international securities of approximately 82% and 18%, respectively, for 2020 and 74% and 26%, respectively, for 2019.

299

 
Input Levels for Fair Value Measurements(1)
  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Cash equivalents$
 $17
 $
 $17
Debt securities:       
United States government obligations21
 
 
 21
Corporate obligations
 59
 
 59
Municipal obligations
 7
 
 7
Agency, asset and mortgage-backed obligations
 33
 
 33
Equity securities:       
United States companies137
 
 
 137
International equity securities44
 
 
 44
Investment funds(2)
74
 
 
 74
Total assets in the hierarchy$276
 $116
 $
 392
Investment funds(2) measured at net asset value
      315
Real estate funds measured at net asset value      38
Total assets measured at fair value      $745
        
As of December 31, 2016:       
Cash equivalents$
 $17
 $
 $17
Debt securities:       
United States government obligations9
 
 
 9
Corporate obligations
 53
 
 53
Municipal obligations
 6
 
 6
Agency, asset and mortgage-backed obligations
 22
 
 22
Equity securities:       
United States companies130
 
 
 130
International equity securities39
 
 
 39
Investment funds(2)
63
 
 
 63
Total assets in the hierarchy$241
 $98
 $
 339
Investment funds(2) measured at net asset value
      295
Real estate funds measured at net asset value      50
Total assets measured at fair value      $684

(1)
Refer to Note 14 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 69% and 31%, respectively, for 2017 and 74% and 26%, respectively, for 2016. Additionally, these funds are invested in United States and international securities of approximately 72% and 28%, respectively, for 2017 and 71% and 29%, respectively, for 2016.

The following table presents the fair value of plan assets, by major category, for MidAmerican Energy's defined benefit other postretirement plans (in millions):
Input Levels for Fair Value Measurements(1)
Level 1Level 2Level 3Total
As of December 31, 2020:
Cash equivalents$11 $$$11 
Debt securities:
United States government obligations
Corporate obligations
Municipal obligations65 65 
Agency, asset and mortgage-backed obligations
Equity securities:
Investment funds(2)
189 189 
Total assets measured at fair value$203 $75 $$278 
As of December 31, 2019:
Cash equivalents$$$$
Debt securities:
United States government obligations
Corporate obligations12 12 
Municipal obligations55 55 
Agency, asset and mortgage-backed obligations10 10 
Equity securities:
United States companies75 75 
Investment funds(2)
108 108 
Total assets measured at fair value$195 $77 $$272 
 
Input Levels for Fair Value Measurements(1)
  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Cash equivalents$6
 $
 $
 $6
Debt securities:       
United States government obligations5
 
 
 5
Corporate obligations
 14
 
 14
Municipal obligations
 44
 
 44
Agency, asset and mortgage-backed obligations
 12
 
 12
Equity securities:       
United States companies84
 
 
 84
Investment funds(2)
112
 
 
 112
Total assets measured at fair value$207
 $70
 $
 $277
        
As of December 31, 2016:       
Cash equivalents$10
 $
 $
 $10
Debt securities:       
United States government obligations5
 
 
 5
Corporate obligations
 11
 
 11
Municipal obligations
 37
 
 37
Agency, asset and mortgage-backed obligations
 11
 
 11
Equity securities:       
United States companies122
 
 
 122
Investment funds(2)
56
 
 
 56
Total assets measured at fair value$193
 $59
 $
 $252
(1)Refer to Note 12 for additional discussion regarding the three levels of the fair value hierarchy.
(1)
Refer to Note 14 for additional discussion regarding the three levels of the fair value hierarchy.
(2)
Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 81% and 19%, respectively, for 2017 and 70% and 30%, respectively, for 2016. Additionally, these funds are invested in United States and international securities of approximately 42% and 58%, respectively, for 2017 and 30% and 70%, respectively, for 2016.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 56% and 44%, respectively, for 2020 and 77% and 23%, respectively, for 2019. Additionally, these funds are invested in United States and international securities of approximately 56% and 44%, respectively, for 2020 and 42% and 58%, respectively, for 2019.

For level 1 investments, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. For level 2 investments, the fair value is determined using pricing models based on observable market inputs. Shares of mutual funds not registered under the Securities Act of 1933, private equity limited partnership interests, common and commingled trust funds and investment entities are reported at fair value based on the net asset value per unit, which is used for expedience purposes. A fund's net asset value is based on the fair value of the underlying assets held by the fund less its liabilities.


Defined Contribution Plan

MidAmerican Energy sponsors a defined contribution plan ("401(k) plan") covering substantially all employees. MidAmerican Energy's matching contributions are based on each participant's level of contribution, and certain participants receive contributions based on eligible pre-taxpretax annual compensation. Contributions cannot exceed the maximum allowable for tax purposes. Certain participants now receive enhanced benefits in the 401(k) plan and no longer accrue benefits in the noncontributory defined benefit pension plans. MidAmerican Energy's contributions to the plan were $20$26 million, $20$23 million, and $20$22 million for the years ended December 31, 2017, 20162020, 2019 and 2015,2018, respectively.



300
(12)Asset Retirement Obligations



(11)Asset Retirement Obligations

MidAmerican Energy estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.


MidAmerican Energy does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain generation, transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. These accruals totaled $688$466 million and $665$572 million as of December 31, 20172020 and 2016,2019, respectively.


The following table presents MidAmerican Energy's ARO liabilities by asset type as of December 31 (in millions):
20202019
Quad Cities Station$376 $358 
Fossil-fueled generating facilities255 325 
Wind-powered generating facilities185 154 
Other
Total asset retirement obligations$818 $839 
Quad Cities Station nuclear decommissioning trust funds(1)
$676 $599 
 2017 2016
    
Quad Cities Station$342
 $343
Fossil-fueled generating facilities113
 132
Wind-powered generating facilities103
 91
Other1
 1
Total asset retirement obligations$559
 $567
    
Quad Cities Station nuclear decommissioning trust funds(1)
$515
 $460
(1)Refer to Note 6 for a discussion of the Quad Cities Station nuclear decommissioning trust funds.
(1)Refer to Note 7 for a discussion of the Quad Cities Station nuclear decommissioning trust funds.


The following table reconciles the beginning and ending balances of MidAmerican Energy's ARO liabilities for the years ended December 31 (in millions):
20202019
Beginning balance$839 $562 
Change in estimated costs47 234 
Additions23 27 
Retirements(124)(14)
Accretion33 30 
Ending balance$818 $839 
Reflected as:
Other current liabilities$109 $135 
Asset retirement obligations709 704 
$818 $839 
 2017 2016
    
Beginning balance$567
 $532
Change in estimated costs(14) 28
Additions8
 14
Retirements(26) (32)
Accretion24
 25
Ending balance$559
 $567
    
Reflected as:   
Other current liabilities$31
 $57
Asset retirement obligations528
 510
 $559
 $567


The changes in estimated costs for 2017Following groundwater testing at its coal combustion residuals ("CCR") surface impoundments, MidAmerican Energy discontinued sending CCR to surface impoundments and 2016 were primarily dueinitiated analysis of additional actions to new decommissioning studies conducted by the operatorbe taken. As a result of Quad Cities Station that changed the estimated amount and timing of cash flows.


(13)Risk Management and Hedging Activities

analysis, MidAmerican Energy is exposedremoving all CCR material located below the water table and capping the material in such facilities, which is a more extensive closure activity than previously assumed. In 2019, MidAmerican Energy increased the AROs for its fossil-fueled generating facilities by $237 million related to the impactcost of market fluctuationsthis closure activity. Closure activity on the six existing surface impoundments is estimated to extend through 2023.

Retirements in commodity prices2020 and interest rates. MidAmerican Energy is principally exposed2019 relate to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its regulated service territory. Prior to January 1, 2016, MidAmerican Energy also provided nonregulated retail electricity and natural gas services in competitive markets, which created contractual obligations to provide electric and natural gas services. MidAmerican Energy's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold, and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather; market liquidity; generating facility availability; customer usage; storage; and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. MidAmerican Energy does not engage in a material amount of proprietary trading activities.

MidAmerican Energy has established a risk management process that is designed to identify, assess, monitor, report, manage and mitigate each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, MidAmerican Energy uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. MidAmerican Energy manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, MidAmerican Energy may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate its exposure to interest rate risk. MidAmerican Energy does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices.

There have been no significant changes in MidAmerican Energy's accounting policies related to derivatives. Refer to Notes 2 and 14 for additional information on derivative contracts and to Note 3 for a discussion of discontinued operations.

The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair valuesettlements of MidAmerican Energy's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Balance Sheets (in millions):CCR ARO liabilities.

301
 Other   Other Other  
 Current Other Current Long-term  
 Assets Assets Liabilities Liabilities Total
As of December 31, 2017:         
Not designated as hedging contracts(1):
         
Commodity assets$6
 $
 $1
 $
 $7
Commodity liabilities(1) 
 (7) (2) (10)
Total derivatives5
 
 (6) (2) (3)
Cash collateral receivable
 
 
 
 
Total derivatives - net basis$5
 $
 $(6) $(2) $(3)
          
As of December 31, 2016:         
Not designated as hedging contracts(1):
         
Commodity assets$8
 $2
 $
 $
 $10
Commodity liabilities(2) 
 (3) (1) (6)
Total derivatives6
 2
 (3) (1) 4
Cash collateral receivable
 
 1
 
 1
Total derivatives - net basis$6
 $2
 $(2) $(1) $5
(1)
MidAmerican Energy's commodity derivatives not designated as hedging contracts are generally included in regulated rates. Accordingly, as of December 31, 2017, a net regulatory asset of $3 million was recorded related to the net derivative a liability of $3 million, and as of December 31, 2016, a net regulatory liability of $(4) million was recorded related to the net derivative asset of $4 million.



Not Designated as Hedging Contracts

The following table reconciles the beginning and ending balances of MidAmerican Energy's net regulatory assets (liabilities) and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets (liabilities), as well as amounts reclassified to earnings for the years ended December 31 (in millions):


 2017 2016 2015
      
Beginning balance$(4) $20
 $38
Changes in fair value recognized in net regulatory assets (liabilities)16
 3
 40
Net gains (losses) reclassified to operating revenue1
 (15) (42)
Net losses reclassified to cost of fuel, energy and capacity(4) 
 (1)
Net losses reclassified to cost of gas sold(6) (12) (15)
Ending balance$3
 $(4) $20
(12)Fair Value Measurements

The following table summarizes the pre-tax unrealized gains (losses) included on the Statements of Operations associated with MidAmerican Energy's derivative contracts not designated as hedging contracts and not recorded as a net regulatory asset or liability for the years ended December 31 (in millions):
 2017 2016 2015
      
Nonregulated operating revenue$
 $
 $15
Regulated cost of fuel, energy and capacity
 
 2
Nonregulated cost of sales
 
 (21)
Total$
 $
 $(4)

Designated as Hedging Contracts

MidAmerican Energy used derivative contracts accounted for as cash flow hedges to hedge electricity and natural gas commodity prices related to its unregulated retail services business, which was transferred to a subsidiary of BHE. The following table reconciles the beginning and ending balances of MidAmerican Energy's accumulated other comprehensive loss (pre-tax) and summarizes pre-tax gains and losses on derivative contracts designated and qualifying as cash flow hedges recognized in OCI, as well as amounts reclassified to earnings, for the years ended December 31 (in millions):
 2017 2016 2015
      
Beginning balance$
 $45
 $34
Transfer to affiliate
 (45) 
Changes in fair value recognized in OCI
 
 58
Net losses reclassified to nonregulated cost of sales
 
 (47)
Ending balance$
 $
 $45

Derivative Contract Volumes

The following table summarizes the net notional amounts of outstanding derivative contracts with fixed price terms that comprise the mark-to-market values as of December 31 (in millions):
 Unit of    
 Measure 2017 2016
      
Natural gas purchasesDecatherms 21
 18


Credit Risk

MidAmerican Energy is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Additionally, MidAmerican Energy participates in the regional transmission organization ("RTO") markets and has indirect credit exposure related to other participants, although RTO credit policies are designed to limit exposure to credit losses from individual participants. Credit risk may be concentrated to the extent MidAmerican Energy's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, MidAmerican Energy analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty, and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, MidAmerican Energy enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, MidAmerican Energy exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

Collateral and Contingent Features

In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base MidAmerican Energy's collateral requirements on its credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in MidAmerican Energy's creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017, MidAmerican Energy's credit ratings from the three recognized credit rating agencies were investment grade.

The aggregate fair value of MidAmerican Energy's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $8 million and $3 million as of December 31, 2017 and 2016, respectively, for which MidAmerican Energy had posted collateral of $- million at each date. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggered as of December 31, 2017 and 2016, MidAmerican Energy would have been required to post $- million and $2 million, respectively, of additional collateral. MidAmerican Energy's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. MidAmerican Energy's exposure to contingent features declined significantly as a result of the transfer of its unregulated retail services business to a subsidiary of BHE.

(14)Fair Value Measurements


The carrying value of MidAmerican Energy's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. MidAmerican Energy has various financial assets and liabilities that are measured at fair value on the Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:


Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that MidAmerican Energy has the ability to access at the measurement date.
Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).
Level 3 - Unobservable inputs reflect MidAmerican Energy's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. MidAmerican Energy develops these inputs based on the best information available, including its own data.

302


The following table presents MidAmerican Energy's assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions):
Input Levels for Fair Value Measurements
Level 1Level 2Level 3
Other(1)
Total
As of December 31, 2020:
Assets:
Commodity derivatives$$$$(5)$
Money market mutual funds(2)
41 — 41 
Debt securities:
United States government obligations200 — 200 
International government obligations— 
Corporate obligations73 — 73 
Municipal obligations— 
Agency, asset and mortgage-backed obligations— 
Equity securities:
United States companies381 — 381 
International companies— 
Investment funds17 — 17 
$648 $90 $$(5)$738 
Liabilities - commodity derivatives$$(4)$(3)$$(2)
As of December 31, 2019
Assets:
Commodity derivatives$$$$(1)$
Money market mutual funds(2)
274 — 274 
Debt securities:
United States government obligations189 — 189 
International government obligations— 
Corporate obligations58 — 58 
Municipal obligations— 
Agency, asset and mortgage-backed obligations— 
Equity securities:
United States companies336 — 336 
International companies— 
Investment funds15 — 15 
$823 $66 $$(1)$889 
Liabilities - commodity derivatives$$(9)$$$(7)
  Input Levels for Fair Value Measurements    
  Level 1 Level 2 Level 3 
Other(1)
 Total
As of December 31, 2017:          
Assets:          
Commodity derivatives $
 $3
 $4
 $(2) $5
Money market mutual funds(2)
 133
 
 
 
 133
Debt securities:          
United States government obligations 176
 
 
 
 176
International government obligations 
 5
 
 
 5
Corporate obligations 
 36
 
 
 36
Municipal obligations 
 2
 
 
 2
Equity securities:          
United States companies 288
 
 
 
 288
International companies 7
 
 
 
 7
Investment funds 15
 
 
 
 15
  $619
 $46
 $4
 $(2) $667
           
Liabilities - commodity derivatives $
 $(9) $(1) $2
 $(8)
           
As of December 31, 2016          
Assets:          
Commodity derivatives $
 $9
 $1
 $(2) $8
Money market mutual funds(2)
 1
 
 
 
 1
Debt securities:          
United States government obligations 161
 
 
 
 161
International government obligations 
 3
 
 
 3
Corporate obligations 
 36
 
 
 36
Municipal obligations 
 2
 
 
 2
Agency, asset and mortgage-backed obligations 
 2
 
 
 2
Equity securities:          
United States companies 250
 
 
 
 250
International companies 5
 
 
 
 5
Investment funds 9
 
 
 
 9
  $426
 $52
 $1
 $(2) $477
           
Liabilities - commodity derivatives $
 $(3) $(3) $3
 $(3)


(1)Represents netting under master netting arrangements and a net cash collateral receivable of $— million and $1 million as of December 31, 2020 and 2019, respectively.
(1)Represents netting under master netting arrangements and a net cash collateral receivable of $- million and $1 million as of December 31, 2017 and 2016, respectively.
(2)
(2)Amounts are included in cash and cash equivalents and investments and restricted cash and investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost.


Derivative contracts are recorded on the Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which MidAmerican Energy transacts. When quoted prices for identical contracts are not available, MidAmerican Energy uses forward price curves. Forward price curves represent MidAmerican Energy's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. MidAmerican Energy bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by MidAmerican Energy. Market price quotations are generally readily obtainable for the applicable term of MidAmerican Energy's outstanding derivative contracts; therefore, MidAmerican Energy's forward price curves reflect observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, MidAmerican Energy uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 13 for further discussion regarding MidAmerican Energy's risk management and hedging activities.money market mutual funds approximates cost.



303


MidAmerican Energy's investments in money market mutual funds and debt and equity securities are stated at fair value, and are primarilywith debt securities accounted for as available-for-sale securities. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics.

The following table reconciles the beginning and ending balances of MidAmerican Energy's assets measured at fair value on a recurring basis using significant Level 3 inputs for the years ended December 31 (in millions):
  Commodity Derivatives Auction Rate Securities
  2017 2016 2015 2017 2016 2015
             
Beginning balance $(2) $(6) $12
 $
 $26
 $26
Transfer to affiliate 
 (4) 
 
 
 
Changes included in earnings(1)
 
 
 11
 
 5
 
Changes in fair value recognized in OCI 
 
 (7) 
 4
 
Changes in fair value recognized in net regulatory assets 2
 (6) (25) 
 
 
Purchases 
 
 1
 
 
 
Redemptions 
 
 
 
 (35) 
Settlements 3
 14
 2
 
 
 
Ending balance $3
 $(2) $(6) $
 $
 $26
(1)Changes included in earnings related to MidAmerican Energy's unregulated retail services business that was transferred to an affiliate of BHE. Refer to Note 3 for a discussion of discontinued operations. Net unrealized gains included in earnings for the year ended December 31, 2015, related to commodity derivatives held at December 31, 2015, totaled $8 million.
MidAmerican Energy's long-term debt is carried at cost on the Financial Statements. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt as of December 31 (in millions):
20202019
Carrying
Value
Fair Value
Carrying
Value
Fair Value
Long-term debt$7,210 $9,130 $7,208 $8,283 

(13)Commitments and Contingencies    
 2017 2016
 
Carrying
Value
 Fair Value 
Carrying
Value
 Fair Value
        
Long-term debt$5,042
 $5,686
 $4,301
 $4,735


(15)Commitments and Contingencies    


Commitments


MidAmerican Energy had the following firm commitments that are not reflected on the Balance Sheet. Minimum payments as of December 31, 2017,2020, are as follows (in millions):
2026 and
20212022202320242025ThereafterTotal
Contract type:
Coal and natural gas for generation$86 $55 $43 $$$$184 
Electric capacity and transmission29 18 25 99 
Natural gas contracts for gas operations121 79 51 21 13 23 308 
Construction commitments442 287 735 
Easements38 39 40 41 41 1,542 1,741 
Maintenance, services and other156 159 159 123 92 358 1,047 
$872 $637 $304 $194 $155 $1,952 $4,114 
            2023 and  
  2018 2019 2020 2021 2022 Thereafter Total
Contract type:              
Coal and natural gas for generation $112
 $56
 $12
 $9
 $8
 $
 $197
Electric capacity and transmission 34
 31
 31
 27
 16
 43
 182
Natural gas contracts for gas operations 122
 75
 73
 57
 42
 42
 411
Construction commitments 790
 28
 2
 
 
 
 820
Easements and operating leases 22
 21
 21
 21
 21
 713
 819
Maintenance and services contracts 96
 102
 119
 114
 154
 233
 818
  $1,176
 $313
 $258
 $228
 $241
 $1,031
 $3,247


Coal, Natural Gas, Electric Capacity and Transmission Commitments


MidAmerican Energy has coal supply and related transportation and lime contracts for its coal-fueled generating facilities. MidAmerican Energy expects to supplement the coal contracts with additional contracts and spot market purchases to fulfill its future coal supply needs. Additionally, MidAmerican Energy has a natural gas transportation contract for a natural gas-fueled generating facility. The contracts have minimum payment commitments ranging through 2022.2023.


MidAmerican Energy has various natural gas supply and transportation contracts for its regulated and nonregulatednatural gas operations that have minimum payment commitments ranging through 2037.2042.


MidAmerican Energy has contracts to purchase electric capacity that have minimum payment commitments ranging through 2028.2030. MidAmerican Energy also has contracts for the right to transmit electricity over other entities' transmission lines with minimum payment commitments ranging through 2022.


Construction Commitments


MidAmerican Energy's firm construction commitments reflected in the table above consist primarily of contracts for the repowering and construction of wind-powered generating facilities in 2018,and the settlement of asset retirement obligations for ash pond closures and the construction in 2018 of the last of four Multi-Value Projects approved by the Midcontinent Independent System Operator, Inc. for high voltage transmission lines in Iowa and Illinois.AROs.


Easements and Operating Leases
304



    Easements

MidAmerican Energy has non-cancelable easements with minimum payment commitments ranging through 2061 for land in Iowa on which certain of its assets, primarily wind-powered generating facilities, are located. MidAmerican Energy also has non-cancelable operating leases with minimum payment commitments ranging through 2020 primarily for office

    Maintenance, Services and other building space, rail cars and computer equipment. These leases generally require MidAmerican Energy to pay for insurance, taxes and maintenance applicable to the leased property. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. Rent expense on non-cancelable operating leases totaled $3 million, $4 million and $4 million for 2017, 2016 and 2015, respectively.

Maintenance and ServicesOther Contracts


MidAmerican Energy has other non-cancelable contracts primarily related to maintenance and services contracts related tofor various generating facilities with minimum payment commitments ranging through 2027.2031.



Environmental Laws and Regulations


MidAmerican Energy is subject to federal, state and local laws and regulations regarding air and water quality, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. MidAmerican Energy believes it is in material compliance with all applicable laws and regulations.


Transmission Rates


MidAmerican Energy's wholesale transmission rates are set annually using FERC-approved formula rates subject to true-up for actual cost of service. MidAmerican Energy is authorized by the FERC to include a 0.50% adder beyond the approved base return on equity ("ROE") effective January 2015. Prior to September 2016, the rates in effect were based on a 12.38% return on equity ("ROE").ROE. In November 2013 and February 2015, a coalition of intervenors filed successive complaints with the FERC requesting that the 12.38% ROE no longer be found just and reasonable and sought to reduce the base ROE to 9.15% and 8.67%, respectively. MidAmerican Energy is authorized by the FERC to include a 0.50% adder beyond the base ROE effective January 2015. In September 2016, the FERC issued an order for the first complaint, which reduces the base ROE to 10.32% and requiresrequired refunds, plus interest, for the period from November 2013 through February 2015. It is uncertain whenCustomer refunds relative to the first complaint occurred in February 2017. In November 2019, the FERC will rule onissued an order addressing the second complaint coveringand issues on appeal in the first complaint. The order established an ROE of 9.88% (10.38% including the 0.50% adder) for the 15-month refund period of the first complaint and prospectively from February 2015 throughSeptember 2016 forward. In May 2016.2020, the FERC issued an order on rehearing of the November 2019 order. The May 2020 order affirmed the FERC's prior decision to dismiss the second complaint and established an ROE of 10.02% (10.52% including the 0.50% adder) for the 15-month refund period of the first complaint and prospectively from September 2016 to the date of the May 2020 order. These orders continue to be subject to judicial appeal. MidAmerican Energy believes it is probable thatcannot predict the FERC will order a base ROE lower than 12.38% in the second complaintultimate outcome of these matters and, as of December 31, 2017,2020, has accrued a $9 million liability for refunds of amounts collected under the higher ROE from November 2013 through May 2016.during the periods covered by both complaints.


Legal Matters


MidAmerican Energy is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Energy does not believe that such normal and routine litigation will have a material impact on its financial results.


(16)Components of Accumulated Other Comprehensive Loss, Net


305


(14)    Revenue from Contracts with Customers

MidAmerican Energy uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. The following table shows the changesummarizes MidAmerican Energy's revenue by line of business and customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in accumulated other comprehensive loss by each component of other comprehensive income, net of applicable income taxes, for the year ended December 31, 2016Note 18, (in millions):
For the Year Ended December 31, 2020
ElectricNatural GasOtherTotal
Customer Revenue:
Retail:
Residential$685 $342 $— $1,027 
Commercial304 111 — 415 
Industrial804 14 — 818 
Natural gas transportation services— 36 — 36 
Other retail131 — 133 
Total retail1,924 505 — 2,429 
Wholesale133 66 — 199 
Multi-value transmission projects60 — — 60 
Other Customer Revenue— — 
Total Customer Revenue2,117 571 2,696 
Other revenue22 24 
Total operating revenue$2,139 $573 $$2,720 
For the Year Ended December 31, 2019
ElectricNatural GasOtherTotal
Customer Revenue:
Retail:
Residential$672 $383 $— $1,055 
Commercial322 132 — 454 
Industrial799 17 — 816 
Natural gas transportation services— 38 — 38 
Other retail145 — 145 
Total retail1,938 570 — 2,508 
Wholesale221 88 — 309 
Multi-value transmission projects57 — — 57 
Other Customer Revenue— — 28 28 
Total Customer Revenue2,216 658 28 2,902 
Other revenue21 23 
Total operating revenue$2,237 $660 $28 $2,925 
306


  Unrealized Unrealized Accumulated
  Losses on Losses Other
  Available-For-Sale on Cash Flow Comprehensive
  Securities Hedges Loss, Net
       
Balance, December 31, 2015 $(3) $(27) $(30)
Other comprehensive income 3
 
 3
Dividend (Note 3) 
 27
 27
Balance, December 31, 2016 $
 $
 $
For the Year Ended December 31, 2018
ElectricNatural GasOtherTotal
Customer Revenue:
Retail:
Residential$696 $421 $— $1,117 
Commercial314 153 — 467 
Industrial758 22 — 780 
Natural gas transportation services— 39 — 39 
Other retail147 — 148 
Total retail1,915 636 — 2,551 
Wholesale295 116 — 411 
Multi-value transmission projects55 — — 55 
Other Customer Revenue— — 11 11 
Total Customer Revenue2,265 752 11 3,028 
Other revenue18 21 
Total operating revenue$2,283 $754 $12 $3,049 


For information regarding cash flow hedge reclassifications from AOCI to net income in their entirety for the years ended December 31, 2016 and 2015, refer to Note 13.

(17)(15)Other Income and (Expense) - Other, Net


Other, net, as shown on the Statements of Operations, includes the following other income (expense) items for the years ended December 31 (in millions):
202020192018
Non-service cost components of postretirement employee benefit plans$24 $17 $21 
Corporate-owned life insurance income16 24 
Gains on disposition of assets
Interest income and other, net
Total$52 $50 $30 

307
 2017 2016 2015
      
Corporate-owned life insurance income$13
 $8
 $4
Gain on redemption of auction rate securities
 5
 
Interest income and other, net6
 1
 1
Total$19
 $14
 $5




(18)(16)Supplemental Cash Flow Disclosures


Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 consist substantially of funds restricted for wildlife preservation and, additionally, as of December 31, 2019, for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and 2019 as presented in the Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Balance Sheets (in millions):
As of December 31,
20202019
Cash and cash equivalents$38 $287 
Restricted cash and cash equivalents in other current assets43 
Total cash and cash equivalents and restricted cash and cash equivalents$45 $330 

The summary of supplemental cash flow disclosures as of and for the years ending December 31 is as follows (in millions):
202020192018
Supplemental cash flow information:
Interest paid, net of amounts capitalized$286 $224 $198 
Income taxes received, net$709 $450 $494 
Supplemental disclosure of non-cash investing transactions:
Accounts payable related to utility plant additions$227 $337 $371 

(17)Related Party Transactions
 2017 2016 2015
Supplemental cash flow information:     
Interest paid, net of amounts capitalized$193
 $181
 $154
Income taxes received, net$465
 $601
 $629
      
Supplemental disclosure of non-cash investing transactions:     
Accounts payable related to utility plant additions$224
 $131
 $249
Dividend of unregulated retail services business (Note 3)$
 $90
 $

(19)Related Party Transactions


The companies identified as affiliates of MidAmerican Energy are Berkshire Hathaway and its subsidiaries, including BHE and its subsidiaries. The basis for the following transactions is provided for in service agreements between MidAmerican Energy and the affiliates.


MidAmerican Energy is reimbursed for charges incurred on behalf of its affiliates. The majority of these reimbursed expenses are for general costs, such as insurance and building rent, and for employee wages, benefits and costs related to corporate functions such as information technology, human resources, treasury, legal and accounting. The amount of such reimbursements was $53$47 million, $41$43 million and $46$51 million for 2017, 20162020, 2019 and 2015,2018, respectively. Additionally, in 2018, MidAmerican Energy received $15 million from BHE for the transfer of a corporate aircraft.


MidAmerican Energy reimbursed BHE in the amount of $9$15 million, $6$14 million and $7$11 million in 2017, 20162020, 2019 and 2015,2018, respectively, for its share of corporate expenses.


MidAmerican Energy purchases, in the normal course of business at either tariffed or market prices, natural gas transportation and storage capacity services from Northern Natural Gas Company, a wholly owned subsidiary of BHE, and coal transportation services from BNSF Railway Company, a wholly-ownedan indirect wholly owned subsidiary of Berkshire Hathaway, in the normal course of business at either tariffed or market prices.Hathaway. These purchases totaled $122$129 million, $135$139 million and $165$127 million in 2017, 20162020, 2019 and 2015,2018, respectively. Additionally, in 2020, MidAmerican Energy paid $7 million to BHE Renewables, LLC, a wholly owned subsidiary of BHE, for the purchase of wind turbine components.


MidAmerican Energy had accounts receivable from affiliates of $9$12 million and $5$6 million as of December 31, 20172020 and 2016,2019, respectively, that are included in receivablesother current assets on the Balance Sheets. MidAmerican Energy also had accounts payable to affiliates of $16$13 million and $13$11 million as of December 31, 20172020 and 2016,2019, respectively, that are included in accounts payable on the Balance Sheets.


308


MidAmerican Energy is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, MidAmerican Energy had a receivable frompayable to BHE of $51$14 million and $82 million as of December 31, 2017,2020 and a payable to BHE of $6 million as of December 31, 2016.2019, respectively. MidAmerican Energy received net cash receipts for federal and state income taxes from BHE totaling $465$709 million, $601$450 million and $629$494 million for the years ended December 31, 2017, 20162020, 2019 and 2015,2018, respectively.


MidAmerican Energy recognizes the full amount of the funded status for its pension and postretirement plans, and amounts attributable to MidAmerican Energy's affiliates that have not previously been recognized through income are recognized as an intercompany balance with such affiliates. MidAmerican Energy adjusts these balances when changes to the funded status of the respective plans are recognized and does not intend to settle the balances currently. Amounts receivable from affiliates attributable to the funded status of employee benefit plans totaled $16$146 million and $12$23 million as of December 31, 20172020 and 2016,2019, respectively, and similarare included in other assets on the Balance Sheets. Similar amounts payable to affiliates totaled $45$49 million and $36$47 million as of December 31, 20172020 and 2016, respectively.2019, respectively, and are included in other long-term liabilities on the Balance Sheets. See Note 1110 for further information pertaining to pension and postretirement accounting.



(20)
(18)Segment Information


MidAmerican Energy has identified two2 reportable operating segments: regulated electric and regulated natural gas. The previously reported nonregulated energy segment consisted substantially of MidAmerican Energy's unregulated retail services business, which was transferred to a subsidiary of BHE and is excluded from the information below related to the statements of operations for all periods presented. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. Refer to Note 109 for a discussion of items affecting income tax (benefit) expense for the regulated electric and natural gas operating segments.


The following tables provide information on a reportable segment basis (in millions):
Years Ended December 31,
202020192018
Operating revenue:
Regulated electric$2,139 $2,237 $2,283 
Regulated natural gas573 660 754 
Other28 12 
Total operating revenue$2,720 $2,925 $3,049 
Depreciation and amortization:
Regulated electric$667 $593 $565 
Regulated natural gas49 46 44 
Total depreciation and amortization$716 $639 $609 
Operating income:
Regulated electric$384 $473 $469 
Regulated natural gas64 71 81 
Other
Total operating income$448 $548 $551 
Interest expense:
Regulated electric$281 $259 $208 
Regulated natural gas23 22 19 
Total interest expense$304 $281 $227 
309


 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Regulated electric$2,108
 $1,985
 $1,837
Regulated gas719
 637
 661
Other10
 3
 4
Total operating revenue$2,837
 $2,625
 $2,502
      
Depreciation and amortization:     
Regulated electric$458
 $436
 $366
Regulated gas42
 43
 41
Total depreciation and amortization$500
 $479
 $407
      
Operating income:     
Regulated electric$485
 $497
 $385
Regulated gas77
 68
 64
Other(1) 
 
Total operating income$561
 $565
 $449
      
Interest expense:     
Regulated electric$196
 $178
 $166
Regulated gas18
 18
 17
Total interest expense$214
 $196
 $183
      
Income tax (benefit) expense from continuing operations:     
Regulated electric$(212) $(156) $(163)
Regulated gas29
 22
 16
Other
 2
 
Total income tax (benefit) expense from continuing operations$(183) $(132) $(147)
      
Net income:     
Regulated electric$570
 $512
 $413
Regulated gas35
 32
 33
Other
 (2) 
Income from continuing operations605
 542
 446
Income on discontinued operations
 
 16
Net income$605
 $542
 $462
Years Ended December 31,
202020192018
Income tax (benefit) expense:
Regulated electric$(584)$(384)$(273)
Regulated natural gas14 12 16 
Other
Total income tax (benefit) expense$(570)$(371)$(255)
Net income:
Regulated electric$780 $739 $628 
Regulated natural gas45 52 54 
Other
Net income$826 $793 $682 
Capital expenditures:
Regulated electric$1,704 $2,684 $2,223 
Regulated natural gas132 126 109 
Total capital expenditures$1,836 $2,810 $2,332 

As of December 31,
202020192018
Total assets:
Regulated electric$19,892 $19,093 $16,511 
Regulated natural gas1,544 1,468 1,406 
Other
Total assets$21,437 $20,564 $17,920 
310


 Years Ended December 31,
 2017 2016 2015
Utility construction expenditures:     
Regulated electric$1,686
 $1,564
 $1,365
Regulated gas87
 72
 81
Total utility construction expenditures$1,773
 $1,636
 $1,446
      
 As of December 31,
 2017 2016 2015
Total assets:     
Regulated electric$14,914
 $14,113
 $12,970
Regulated gas1,403
 1,345
 1,251
Other1
 1
 164
Total assets$16,318
 $15,459
 $14,385



(21)Unaudited Quarterly Operating Results

 2017
 
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
 (In millions)
Operating revenue$695
 $658
 $813
 $671
Operating income107
 135
 288
 31
Net income (loss)105
 134
 385
 (19)
        
 2016
 
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
 (In millions)
Operating revenue$625
 $584
 $795
 $621
Operating income100
 139
 284
 42
Net income76
 131
 320
 15

Quarterly operating results are affected by, among other things, MidAmerican Energy's seasonal retail electricity prices, the timing of recognition of federal renewable electricity production tax credits related to MidAmerican Energy's wind-powered generating facilities and the seasonal impact of weather on electricity and natural gas sales.



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM




To the Board of Managers and Member of
MidAmerican Funding, LLC
Des Moines, Iowa


Opinion on the Financial Statements


We have audited the accompanying consolidated balance sheets of MidAmerican Funding, LLC and subsidiaries ("MidAmerican Funding") as of December 31, 20172020 and 2016, and2019, the related consolidated statements of operations, comprehensive income, changes in member's equity, and cash flows for each of the three years in the period ended December 31, 2017, and2020, the related notes and the schedules listed in the Index at Item 15(a)(ii)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of MidAmerican Funding as of December 31, 20172020 and 2016,2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2020, in conformity with accounting principles generally accepted in the United States of America.


Basis for Opinion


These financial statements are the responsibility of MidAmerican Funding's management. Our responsibility is to express an opinion on MidAmerican Funding's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to MidAmerican Funding in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audits in accordance with the standards of the PCAOB and in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. MidAmerican Funding is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of MidAmerican Funding’sFunding's internal control over financial reporting. Accordingly, we express no such opinion.


Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.



Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.


311


Regulatory Matters - Impact of Rate Regulation on the Financial Statements - Refer to Notes 2 and 5 to the financial statements

Critical Audit Matter Description

MidAmerican Funding is subject to rate regulation by state public service commissions as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to the rates of electric and natural gas companies in the respective service territories where MidAmerican Funding operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense and income tax benefit.

Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow MidAmerican Funding an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered by rates. While MidAmerican Funding has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit MidAmerican Funding's ability to recover its costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, (2) a disallowance of part of the cost of recently completed plant or plant under construction, and (3) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated MidAmerican Funding's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected MidAmerican Funding's filings with the Commissions and the filings with the Commissions by intervenors that may impact MidAmerican Funding's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

/s/ Deloitte & Touche LLP


Des Moines, Iowa
February 23, 201826, 2021


We have served as MidAmerican Funding's auditor since 1999.



312


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)

As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$39 $288 
Trade receivables, net234 291 
Inventories278 226 
Other current assets74 91 
Total current assets625 896 
Property, plant and equipment, net19,279 18,377 
Goodwill1,270 1,270 
Regulatory assets392 289 
Investments and restricted investments913 820 
Other assets232 188 
Total assets$22,711 $21,840 
 As of December 31,
 2017 2016
    
ASSETS
Current assets:   
Cash and cash equivalents$172
 $15
Receivables, net348
 287
Income taxes receivable64
 9
Inventories245
 264
Other current assets134
 35
Total current assets963
 610
    
Property, plant and equipment, net14,221
 12,835
Goodwill1,270
 1,270
Regulatory assets204
 1,161
Investments and restricted cash and investments730
 655
Other assets233
 216
    
Total assets$17,621
 $16,747


The accompanying notes are an integral part of these consolidated financial statements.

313


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)

As of December 31,
20202019
LIABILITIES AND MEMBER'S EQUITY
Current liabilities:
Accounts payable$408 $520 
Accrued interest83 84 
Accrued property, income and other taxes161 226 
Note payable to affiliate177 171 
Other current liabilities183 219 
Total current liabilities1,012 1,220 
Long-term debt7,450 7,448 
Regulatory liabilities1,111 1,406 
Deferred income taxes3,052 2,621 
Asset retirement obligations709 704 
Other long-term liabilities458 340 
Total liabilities13,792 13,739 
Commitments and contingencies (Note 13)00
Member's equity:
Paid-in capital1,679 1,679 
Retained earnings7,240 6,422 
Total member's equity8,919 8,101 
Total liabilities and member's equity$22,711 $21,840 
 As of December 31,
 2017 2016
    
LIABILITIES AND MEMBER'S EQUITY
Current liabilities:   
Accounts payable$451
 $302
Accrued interest53
 52
Accrued property, income and other taxes133
 138
Note payable to affiliate164
 31
Short-term debt
 99
Current portion of long-term debt350
 250
Other current liabilities128
 160
Total current liabilities1,279
 1,032
    
Long-term debt4,932
 4,377
Deferred income taxes2,235
 3,568
Regulatory liabilities1,661
 883
Asset retirement obligations528
 510
Other long-term liabilities326
 291
Total liabilities10,961
 10,661
    
Commitments and contingencies (Note 15)
 
    
Member's equity:   
Paid-in capital1,679
 1,679
Retained earnings4,981
 4,407
Total member's equity6,660
 6,086
    
Total liabilities and member's equity$17,621
 $16,747


The accompanying notes are an integral part of these consolidated financial statements.



314


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating revenue:
Regulated electric$2,139 $2,237 $2,283 
Regulated natural gas and other589 690 770 
Total operating revenue2,728 2,927 3,053 
Operating expenses:
Cost of fuel and energy339 399 487 
Cost of natural gas purchased for resale and other329 412 469 
Operations and maintenance755 801 813 
Depreciation and amortization716 639 609 
Property and other taxes135 127 125 
Total operating expenses2,274 2,378 2,503 
Operating income454 549 550 
Other income (expense):
Interest expense(322)(302)(247)
Allowance for borrowed funds15 27 20 
Allowance for equity funds45 78 53 
Other, net52 52 31 
Total other income (expense)(210)(145)(143)
Income before income tax benefit244 404 407 
Income tax benefit(574)(377)(262)
Net income$818 $781 $669 
 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Regulated electric$2,108
 $1,985
 $1,837
Regulated gas and other738
 646
 678
Total operating revenue2,846
 2,631
 2,515
      
Operating costs and expenses:     
Cost of fuel, energy and capacity434
 409
 433
Cost of gas sold and other447
 371
 407
Operations and maintenance784
 694
 707
Depreciation and amortization500
 479
 407
Property and other taxes119
 112
 110
Total operating costs and expenses2,284
 2,065
 2,064
      
Operating income562
 566
 451
      
Other income and (expense):     
Interest expense(237) (219) (206)
Allowance for borrowed funds15
 8
 8
Allowance for equity funds41
 19
 20
Other, net(9) 19
 19
Total other income and (expense)(190) (173) (159)
      
Income before income tax benefit372
 393
 292
Income tax benefit(202) (139) (150)
      
Income from continuing operations574
 532
 442
      
Discontinued operations (Note 3):     
Income from discontinued operations
 
 22
Income tax expense
 
 6
Income on discontinued operations
 
 16
      
Net income$574
 $532
 $458


The accompanying notes are an integral part of these consolidated financial statements.



315


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOMECHANGES IN MEMBER'S EQUITY
(Amounts in millions)

Paid-in
Capital
Retained
Earnings
Total Member's Equity
Balance, December 31, 2017$1,679 $4,981 $6,660 
Net income— 669 669 
Balance, December 31, 20181,679 5,650 7,329 
Net income— 781 781 
Distribution to member— (8)(8)
Other equity transactions— (1)(1)
Balance, December 31, 20191,679 6,422 8,101 
Net income— 818 818 
Balance, December 31, 2020$1,679 $7,240 $8,919 
 Years Ended December 31,
 2017 2016 2015
      
Net income$574
 $532
 $458
      
Other comprehensive income (loss), net of tax:     
Unrealized gains on available-for-sale securities, net of tax of $-, $1 and $-
 3
 
Unrealized losses on cash flow hedges, net of tax of $-, $- and $(4)
 
 (7)
Total other comprehensive income (loss), net of tax
 3
 (7)
      
Comprehensive income$574
 $535
 $451


The accompanying notes are an integral part of these consolidated financial statements.


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)


316
     Accumulated  
     Other  
 
Paid-in
Capital
 
Retained
Earnings
 
Comprehensive
 Loss, Net
 Total Equity
        
Balance, December 31, 2014$1,679
 $3,417
 $(23) $5,073
Net income
 458
 
 458
Other comprehensive loss
 
 (7) (7)
Other equity transactions
 1
 
 1
Balance, December 31, 20151,679
 3,876
 (30) 5,525
Net income
 532
 
 532
Other comprehensive income
 
 3
 3
Transfer to affiliate (Note 3)


 
 27
 27
Other equity transactions
 (1) 
 (1)
Balance, December 31, 20161,679
 4,407
 
 6,086
Net income
 574
 
 574
Balance, December 31, 2017$1,679
 $4,981
 $
 $6,660



The accompanying notes are an integral part of these consolidated financial statements.


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$818 $781 $669 
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization716 639 609 
Amortization of utility plant to other operating expenses34 33 34 
Allowance for equity funds(45)(78)(53)
Deferred income taxes and amortization of investment tax credits211 152 32 
Settlements of asset retirement obligations(124)(14)(28)
Other, net(17)43 
Changes in other operating assets and liabilities:
Trade receivables and other assets48 56 (19)
Inventories(52)(22)41 
Pension and other postretirement benefit plans, net(19)(10)(13)
Accrued property, income and other taxes, net(66)(74)230 
Accounts payable and other liabilities32 (29)
Net cash flows from operating activities1,536 1,475 1,516 
Cash flows from investing activities:
Capital expenditures(1,836)(2,810)(2,332)
Purchases of marketable securities(281)(156)(263)
Proceeds from sales of marketable securities269 138 223 
Proceeds from sales of other investments17 
Other investment proceeds13 15 
Other, net11 13 30 
Net cash flows from investing activities(1,825)(2,801)(2,310)
Cash flows from financing activities:
Proceeds from long-term debt2,326 687 
Repayments of long-term debt(500)(350)
Net change in note payable to affiliate15 (8)
Net (repayments of) proceeds from short-term debt(240)240 
Other, net(1)(1)
Net cash flows from financing activities1,600 569 
Net change in cash and cash equivalents and restricted cash and cash equivalents(285)274 (225)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year331 57 282 
Cash and cash equivalents and restricted cash and cash equivalents at end of year$46 $331 $57 
 Years Ended December 31,
 2017 2016 2015
Cash flows from operating activities:     
Net income$574
 $532
 $458
Adjustments to reconcile net income to net cash flows from operating activities:     
Loss on other items29
 
 
Depreciation and amortization500
 479
 407
Deferred income taxes and amortization of investment tax credits334
 362
 276
Changes in other assets and liabilities37
 47
 49
Other, net(58) (92) (69)
Changes in other operating assets and liabilities:     
Receivables, net(60) (61) 93
Inventories19
 (27) (53)
Derivative collateral, net2
 5
 33
Pension and other postretirement benefit plans, net(11) (6) (8)
Accounts payable69
 39
 (76)
Accrued property, income and other taxes, net(54) 107
 213
Other current assets and liabilities(1) 8
 12
Net cash flows from operating activities1,380
 1,393
 1,335
      
Cash flows from investing activities:     
Utility construction expenditures(1,773) (1,636) (1,446)
Purchases of available-for-sale securities(143) (138) (142)
Proceeds from sales of available-for-sale securities137
 158
 135
Proceeds from sales of other investments2
 2
 13
Net increase in restricted cash and short-term investments(98) (10) 
Other, net(2) 10
 2
Net cash flows from investing activities(1,877) (1,614) (1,438)
      
Cash flows from financing activities:     
Proceeds from long-term debt990
 62
 649
Repayments of long-term debt(341) (38) (426)
Net change in note payable to affiliate133
 9
 3
Net (repayments of) proceeds from short-term debt(99) 99
 (50)
Tender offer premium paid(29) 
 
Other, net
 1
 
Net cash flows from financing activities654
 133
 176
      
Net change in cash and cash equivalents157
 (88) 73
Cash and cash equivalents at beginning of year15
 103
 30
Cash and cash equivalents at end of year$172
 $15
 $103


The accompanying notes are an integral part of these consolidated financial statements.



317


MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(1)
Company Organization

(1)Organization and Operations

MidAmerican Funding, LLC ("MidAmerican Funding") is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). MidAmerican Funding's direct wholly owned subsidiary is MHC Inc. ("MHC"), which constitutes substantially all of MidAmerican Funding's assets, liabilities and business activities except those related to MidAmerican Funding's long-term debt securities. MHC conducts no business other than the ownership of its subsidiaries and related corporate services. MHC's principal subsidiary is MidAmerican Energy Company ("MidAmerican Energy"), a public utility with electric and natural gas operations. Direct,operations, and its direct, wholly owned nonregulated subsidiaries of MHC aresubsidiary is Midwest Capital Group, Inc. ("Midwest Capital Group") and MEC Construction Services Co..


(2)
Summary of Significant Accounting Policies

(2)    Summary of Significant Accounting Policies

In addition to the following significant accounting policies, refer to Note 2 of MidAmerican Energy's Notes to Financial Statements for significant accounting policies of MidAmerican Funding.


Basis ofConsolidation and Presentation


The Consolidated Financial Statements include the accounts of MidAmerican Funding and its subsidiaries in which it held a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated, other than those between rate-regulated operations. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the years ended December 31, 2020, 2019 and 2018.


Goodwill


Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired when MidAmerican Funding purchased MHC. MidAmerican Funding evaluates goodwill for impairment at least annually and completed its annual review as of October 31. When evaluating goodwill for impairment, MidAmerican Funding estimates the fair value of theits reporting unit.units. If the carrying amount of a reporting unit, including goodwill, exceeds the estimated fair value, then the identifiable assets, including identifiable intangible assets, and liabilities of the reporting unit are estimated at fair value as of the current testing date. The excess of the estimated fair value of the reporting unit over the current estimated fair value of net assets establishes the implied value of goodwill. The excess of the recorded goodwill over the implied goodwill value is charged to earnings as an impairment loss. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. MidAmerican Funding uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings; and an appropriate discount rate. In estimating future cash flows, MidAmerican Funding incorporates current market information, as well as historical factors. As such, the determination of fair value incorporates significant unobservable inputs. During 2017, 20162020, 2019 and 2015,2018, MidAmerican Funding did not record any goodwill impairments.


(3)Discontinued Operations

(3)    Property, Plant and Equipment, Net

Refer to Note 3 of MidAmerican Energy's Notes to Financial Statements. The transfer of MidAmerican Energy's unregulated retail services business to a subsidiary of BHE repaid $117 million of MHC's note payable to BHE.

(4)    Property, Plant and Equipment, Net

Refer to Note 4 of MidAmerican Energy's Notes to Financial Statements. In addition to MidAmerican Energy's property, plant and equipment, net, MidAmerican Funding had nonregulated property gross of $24$— million and $22$3 million as of December 31, 20172020 and 2016,2019, respectively, and related accumulated depreciation and amortization of $10$— million and $9 million as of December 31, 2017 and 2016, respectively, and construction work-in-progress of $1 million as of December 31, 2016, which consisted primarily2020 and 2019, respectively.

(4)Jointly Owned Utility Facilities

Refer to Note 4 of a corporate aircraft owned by MHC.MidAmerican Energy's Notes to Financial Statements.


(5)Jointly Owned Utility Facilities

(5)Regulatory Matters

Refer to Note 5 of MidAmerican Energy's Notes to Financial Statements.



318
(6)Regulatory Matters



(6)Investments and Restricted Investments

Refer to Note 6 of MidAmerican Energy's Notes to Financial Statements.

(7)Investments and Restricted Cash and Investments

Refer to Note 7 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K. In addition to MidAmerican Energy's investments and restricted cash and investments, MHC had corporate-owned life insurance policies in a Rabbi trust owned by MHC with a total cash surrender value of $2 million as of December 31, 20172020 and 2016.2019.


(8)Short-Term Debt and Credit Facilities

(7)Short-term Debt and Credit Facilities

Refer to Note 87 of MidAmerican Energy's Notes to Financial Statements. In addition to MidAmerican Energy's credit facilities, MHC has a $4 million unsecured credit facility, which expires in June 20182021 and has a variable interest rate based on LIBORthe Eurodollar rate plus a spread. As of December 31, 20172020 and 2016,2019, there were no borrowings outstanding under this credit facility. As of December 31, 2017,2020, MHC was in compliance with the covenants of its credit facility.


(9)Long-Term(8)Long-term Debt


Refer to Note 98 of MidAmerican Energy's Notes to Financial Statements for detail and a discussion of its long-term debt. In addition to MidAmerican Energy's annual repayments of long-term debt, MidAmerican Funding parent company has $239 million of 6.927% Senior Bonds due in 2029, with a carrying value of $240 million and $326 million as of December 31, 20172020 and 2016, respectively. In December 2017, MidAmerican Funding redeemed through a tender offer a portion of its 6.927% Senior Bonds. A charge of $29 million for the total premium is included in other income and (expense), net on the Consolidated Statement of Operations.2019.


The MidAmerican Funding parent company long-term debt is secured by a pledge of the common stock of MHC. See Item 15(c) for the Consolidated Financial Statements of MHC Inc. and subsidiaries. The bonds are the direct senior secured obligations of MidAmerican Funding and effectively rank junior to all indebtedness and other liabilities of the direct and indirect subsidiaries of MidAmerican Funding, to the extent of the assets of these subsidiaries. MidAmerican Funding may redeem the bonds in whole or in part at any time at a redemption price equal to the sum of any accrued and unpaid interest to the date of redemption and the greater of (1) 100% of the principal amount of the bonds or (2) the sum of the present values of the remaining scheduled payments of principal and interest on the bonds, discounted to the date of redemption on a semiannual basis at the treasury yield plus 25 basis points.


MidAmerican Funding parent company long-term debt is secured by a pledge of the common stock of MHC, which is not publicly traded. In the event of any triggering event under the related debt indenture, the common stock of MHC would be available to satisfy the applicable debt obligations. Triggering events include, among other specified circumstances, (1) default on the payment of interest for 30 days or principal for three days; (2) a material default in the performance of any material covenants or obligations in the indenture continuing for a period of 90 days after written notice in accordance with the indenture; or (3) the failure generally of MidAmerican Funding or any significant subsidiary to pay its debts when due. Previously, the consolidated financial statements of MHC Inc. were disclosed in Item 15(c) of this Form 10-K in accordance with Rule 3-16 of the U. S. Securities and Exchange Commission's Regulation S-X. In April 2020, the U. S. Securities and Exchange Commission published Rule 13-02 of Regulation S‑X to be effective January 4, 2021, with the option to adopt early. MidAmerican Funding adopted Rule 13-02, "Affiliates whose securities collateralize securities registered or being registered," on December 31, 2020. Under the new rule, disclosure of the separate consolidated financial statements of MHC Inc. is no longer required. The assets, liabilities and results of operations of consolidated MHC are not materially different than the corresponding amounts presented in the consolidated financial statements of MidAmerican Funding, other than the MidAmerican Funding parent company debt and related interest expense and income tax. As such, disclosure of summarized financial information of consolidated MHC Inc. is not required.

Subsidiaries of MidAmerican Funding must make payments on their own indebtedness before making distributions to MidAmerican Funding. Refer to Note 98 of MidAmerican Energy's Notes to Financial Statements for a discussion of utility regulatory restrictions affecting distributions from MidAmerican Energy. As a result of the utility regulatory restrictions agreed to by MidAmerican Energy in March 1999, MidAmerican Funding had restricted net assets of $3.7$5.2 billion as of December 31, 2017.2020.


As of December 31, 2017,2020, MidAmerican Funding was in compliance with all of its applicable long-term debt covenants.


Each of MidAmerican Funding's direct or indirect subsidiaries is organized as a legal entity separate and apart from MidAmerican Funding and its other subsidiaries. It should not be assumed that any asset of any subsidiary of MidAmerican Funding will be available to satisfy the obligations of MidAmerican Funding or any of its other subsidiaries; provided, however, that unrestricted cash or other assets which are available for distribution may, subject to applicable law and the terms of financing arrangements of such parties, be advanced, loaned, paid as dividends or otherwise distributed or contributed to MidAmerican Funding, one of its subsidiaries or affiliates thereof.


319
(10)


(9)Income Taxes

Tax Cuts and Jobs Act

On December 22, 2017, the Tax Cuts and Jobs Act ("2017 Tax Reform") was signed into law, which impacts many areas of income tax law. The most material items include the reduction of the federal corporate tax rate from 35% to 21% effective January 1, 2018 and limitations on bonus depreciation for utility property. Accounting principles generally accepted in the United States of America ("GAAP") require the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. As a result of the 2017 Tax Reform, MidAmerican Funding reduced deferred income tax liabilities $1,822 million. As it is probable the change in deferred taxes for the MidAmerican Funding's regulated businesses will be passed back to customers through regulatory mechanisms, MidAmerican Funding increased net regulatory liabilities by $1,845 million.

In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. MidAmerican Funding has recorded the impacts of 2017 Tax Reform and believes all the impacts to be complete with the exception of interpretations of the bonus depreciation rules. MidAmerican Funding has determined the amounts recorded and the interpretations relating to this item to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. MidAmerican Funding believes its interpretations for bonus depreciation to be reasonable; however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.


MidAmerican Funding's income tax benefit from continuing operations consists of the following for the years ended December 31 (in millions):
202020192018
Current:
Federal$(689)$(480)$(280)
State(96)(49)(14)
(785)(529)(294)
Deferred:
Federal204 164 42 
State(11)(9)
212 153 33 
Investment tax credits(1)(1)(1)
Total$(574)$(377)$(262)
 2017 2016 2015
Current:     
Federal$(505) $(485) $(418)
State(31) (16) (8)
 (536) (501) (426)
Deferred:     
Federal338
 367
 282
State(3) (4) (5)
 335
 363
 277
      
Investment tax credits(1) (1) (1)
Total$(202) $(139) $(150)


A reconciliation of the federal statutory income tax rate to MidAmerican Funding's the effective income tax rate applicable to income before income tax benefit from continuing operations is as follows for the years ended December 31:
202020192018
Federal statutory income tax rate21 %21 %21 %
Income tax credits(209)(94)(76)
State income tax, net of federal income tax benefit(29)(12)(4)
Effects of ratemaking(17)(8)(6)
Other, net(1)
Effective income tax rate(235)%(93)%(64)%
 2017 2016 2015
      
Federal statutory income tax rate35 % 35 % 35 %
Income tax credits(77) (64) (72)
State income tax, net of federal income tax benefit(6) (3) (3)
Effects of ratemaking(8) (3) (12)
2017 Tax Reform3
 
 
Other, net(1) 
 1
Effective income tax rate(54)% (35)% (51)%


Income tax credits relate primarily to production tax credits ("PTC") earned by MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity production tax creditsPTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Interim recognition of production tax credits in income is based on the annualized effective tax rate applied each period, similar to all book to tax differences. Recognition of production tax credits in income during interim periods of the year may vary significantly from actual amounts earned. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in service.in-service.



320


MidAmerican Funding's net deferred income tax liability consists of the following as of December 31 (in millions):
20202019
Deferred income tax assets:
Regulatory liabilities$288 $368 
Asset retirement obligations229 234 
State carryforwards52 51 
Employee benefits43 26 
Other40 39 
Total deferred income tax assets652 718 
Valuation allowances(25)(14)
Total deferred income tax assets, net627 704 
Deferred income tax liabilities:
Depreciable property(3,583)(3,253)
Regulatory assets(97)(68)
Other(4)
Total deferred income tax liabilities(3,679)(3,325)
Net deferred income tax liability$(3,052)$(2,621)
 2017 2016
Deferred income tax assets:   
Regulatory liabilities$443
 $333
Employee benefits45
 66
Asset retirement obligations160
 230
Other62
 82
Total deferred income tax assets710
 711
    
Deferred income tax liabilities:   
Depreciable property(2,868) (3,767)
Regulatory assets(42) (471)
Other(35) (41)
Total deferred income tax liabilities(2,945) (4,279)
    
Net deferred income tax liability$(2,235) $(3,568)


As of December 31, 2017,2020, MidAmerican Funding has available $40 million ofFunding's state tax carryforwards, principally related to $583$768 million of net operating losses, that expire at various intervals between 20182021 and 2036.2039.


The United States Internal Revenue Service has closed or effectively settled its examination of BHE'sMidAmerican Funding's income tax returns through December 31, 2009, including components related to2013. The statute of limitations for MidAmerican Funding. In addition,Funding's state jurisdictions have closed their examinations of MidAmerican Funding's income tax returns for Iowahave expired through December 31, 2013,2011, for IllinoisMichigan and Nebraska, and through December 31, 2008,2016, for Illinois, Indiana, Iowa, Kansas and Missouri, except for other jurisdictions through December 31, 2009.the impact of any federal audit adjustments. The statute of limitations expiring for state filings may not preclude the state from adjusting the state net operating loss carryforward utilized in a year for which the statute of limitations is not closed.


A reconciliation of the beginning and ending balances of MidAmerican Funding's net unrecognized tax benefits is as follows for the years ended December 31 (in millions):
20202019
Beginning balance$$10 
Additions based on tax positions related to the current year
Additions for tax positions of prior years10 
Reductions based on tax positions related to the current year(3)(5)
Reductions for tax positions of prior years(1)(12)
Ending balance$$
 2017 2016
    
Beginning balance$10
 $10
Additions based on tax positions related to the current year1
 
Additions for tax positions of prior years23
 10
Reductions based on tax positions related to the current year(4) (2)
Reductions for tax positions of prior years(19) (8)
Interest and penalties1
 
Ending balance$12
 $10


As of December 31, 2017,2020, MidAmerican Funding had unrecognized tax benefits totaling $39$26 million that, if recognized, would have an impact on the effective tax rate. The remaining unrecognized tax benefits relate to tax positions for which ultimate deductibility is highly certain but for which there is uncertainty as to the timing of such deductibility. Recognition of these tax benefits, other than applicable interest and penalties, would not affect MidAmerican Funding's effective income tax rate.



321
(11)Employee Benefit Plans



(10)Employee Benefit Plans

Refer to Note 1110 of MidAmerican Energy's Notes to Financial Statements for additional information regarding MidAmerican Funding's pension, supplemental retirement and postretirement benefit plans.


Pension and postretirement costs allocated by MidAmerican Funding to its parent and other affiliates in each of the years ended December 31, were as follows (in millions):
202020192018
Pension costs$$$
Other postretirement costs(3)(2)(2)

(11)Asset Retirement Obligations
 2017 2016 2015
      
Pension costs$4
 $4
 $4
Other postretirement costs(3) (1) (2)


Refer to Note 11 of MidAmerican Energy's Notes to Financial Statements.

(12)Asset Retirement Obligations

(12)Fair Value Measurements

Refer to Note 12 of MidAmerican Energy's Notes to Financial Statements.

(13)Risk Management and Hedging Activities

Refer to Note 13 of MidAmerican Energy's Notes to Financial Statements.

(14)Fair Value Measurements

Refer to Note 14 of MidAmerican Energy's Notes to Financial Statements.


MidAmerican Funding's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding's long-term debt as of December 31 (in millions):
20202019
Carrying
Value
Fair Value
Carrying
Value
Fair Value
Long-term debt$7,450 $9,466 $7,448 $8,599 

 2017 2016
 
Carrying
Value
 Fair Value 
Carrying
Value
 Fair Value
        
Long-term debt$5,282
 $6,006
 $4,627
 $5,164

(15)(13)Commitments and Contingencies


Refer to Note 1513 of MidAmerican Energy's Notes to Financial Statements.


Legal Matters


MidAmerican Funding is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Funding does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.


(16)Components of Accumulated Other Comprehensive Loss, Net

(14)    Revenue from Contracts with Customers

Refer to Note 1614 of MidAmerican Energy's Notes to Financial Statements. Additionally, MidAmerican Funding had $8 million, $2 million and $4 million of other revenue from contracts with customers for the year ended December 31, 2020, 2019 and 2018, respectively.


(17)
322


(15)Other Income and (Expense) - Other, Net


Other, net, as shown on the Consolidated Statements of Operations, includes the following other income (expense) items for the years ended December 31 (in millions):
202020192018
Non-service cost components of postretirement employee benefit plans$24 $17 $21 
Corporate-owned life insurance income16 24 
Gains on disposition of assets
Interest income and other, net11 
Total$52 $52 $31 
 2017 2016 2015
      
Corporate-owned life insurance income$13
 $8
 $4
Gain on redemption of auction rate securities
 5
 
Gains on sales of assets and other investments1
 3
 13
Loss on debt tender offer(29) 
 
Interest income and other, net6
 3
 2
Total$(9) $19
 $19

Refer to Note 9 for information regarding the debt tender offer. MidAmerican Funding recognized a $13 million pre-tax gain on the sale of an investment in a generating facility lease in 2015.

(18)(16)Supplemental Cash Flow Information


Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 consist substantially of funds restricted for wildlife preservation and, additionally, as of December 31, 2019, for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and 2019 as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20202019
Cash and cash equivalents$39 $288 
Restricted cash and cash equivalents in other current assets43 
Total cash and cash equivalents and restricted cash and cash equivalents$46 $331 

The summary of supplemental cash flow information as of and for the years ending December 31 is as follows (in millions):
202020192018
Supplemental cash flow information:
Interest paid, net of amounts capitalized$302 $245 $218 
Income taxes received, net$715 $456 $511 
Supplemental disclosure of non-cash investing and financing transactions:
Accounts payable related to utility plant additions$227 $337 $371 
Distribution of corporate aircraft to parent$— $$— 

323
 2017 2016 2015
Supplemental cash flow information:     
Interest paid, net of amounts capitalized$218
 $204
 $177
Income taxes received, net$472
 $609
 $630
      
Supplemental disclosure of non-cash investing transactions:     
Accounts payable related to utility plant additions$224
 $131
 $249
Transfer of assets and liabilities to affiliate (Note 3)$
 $90
 $



(17)Related Party Transactions
(19)Related Party Transactions


The companies identified as affiliates of MidAmerican Funding are Berkshire Hathaway and its subsidiaries, including BHE and its subsidiaries. The basis for the following transactions is provided for in service agreements between MidAmerican Funding and the affiliates.


MidAmerican Funding is reimbursed for charges incurred on behalf of its affiliates. The majority of these reimbursed expenses are for allocated general costs, such as insurance and building rent, and for employee wages, benefits and costs for corporate functions, such as information technology, human resources, treasury, legal and accounting. The amount of such reimbursements was $46 million, $35$41 million and $35$44 million for 2017, 20162020, 2019 and 2015,2018, respectively. Additionally, in 2018, MidAmerican Funding received $15 million from BHE for the transfer of corporate aircraft owned by MidAmerican Energy and, in 2019, recorded a noncash dividend of $8 million for the transfer to BHE of corporate aircraft owned by MHC.


MidAmerican Funding reimbursed BHE in the amount of $9$15 million, $6$14 million and $7$11 million in 2017, 20162020, 2019 and 2015,2018, respectively, for its share of corporate expenses.


MidAmerican Energy purchases, in the normal course of business at either tariffed or market prices. natural gas transportation and storage capacity services from Northern Natural Gas Company, a wholly owned subsidiary of BHE and coal transportation services from BNSF Railway Company, a wholly-owned subsidiary of Berkshire Hathaway, in the normal course of business at either tariffed or market prices.Hathaway. These purchases totaled $122$129 million, $135$139 million and $165$127 million in 2017, 20162020, 2019 and 2015,2018, respectively. Additionally, in 2020, MidAmerican Energy paid $7 million to BHE Renewables, LLC, a wholly owned subsidiary of BHE, for the purchase of wind turbine components.


MHC has a $300 million revolving credit arrangement carrying interest at the 30-day LIBORLondon Interbank Offered Rate ("LIBOR") rate plus a spread to borrow from BHE. Outstanding balances are unsecured and due on demand. The outstanding balance was $164$177 million at an interest rate of 1.629%0.397% as of December 31, 2017,2020, and $31$171 million at an interest rate of 0.885%1.944% as of December 31, 2016,2019, and is reflected as note payable to affiliate on the Consolidated Balance Sheet.



BHE has a $100 million revolving credit arrangement, carrying interest at the 30-day LIBOR rate plus a spread to borrow from MHC. Outstanding balances are unsecured and due on demand. There were no0 borrowings outstanding throughout 20172020 and 2016.2019.


MidAmerican Funding had accounts receivable from affiliates of $9$13 million and $7 million as of December 31, 20172020 and 2016,2019, respectively, that are included in receivables, netother current assets on the Consolidated Balance Sheets. MidAmerican Funding also had accounts payable to affiliates of $14$13 million and $12$11 million as of December 31, 20172020 and 2016,2019, respectively, that are included in accounts payable on the Consolidated Balance Sheets.


MidAmerican Funding is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, MidAmerican Funding had a receivable frompayable to BHE of $64$14 million and $83 million as of December 31, 2017,2020 and a payable to BHE of $7 million as of December 31, 2016.2019, respectively. MidAmerican Funding received net cash receipts for federal and state income taxes from BHE totaling $472$715 million, $609$456 million and $631$511 million for the years ended December 31, 2017, 20162020, 2019 and 2015,2018, respectively.


MidAmerican Funding recognizes the full amount of the funded status for its pension and postretirement plans, and amounts attributable to MidAmerican Funding's affiliates that have not previously been recognized through income are recognized as an intercompany balance with such affiliates. MidAmerican Funding adjusts these balances when changes to the funded status of the respective plans are recognized and does not intend to settle the balances currently. Amounts receivable from affiliates attributable to the funded status of employee benefit plans totaled $16$146 million and $12$23 million as of December 31, 20172020 and 2016,2019, respectively, and similarare included in other assets on the Consolidated Balance Sheets. Similar amounts payable to affiliates totaled $45$49 million and $36$47 million as of December 31, 20172020 and 2016, respectively.2019, respectively, and are included in other long-term liabilities on the Consolidated Balance Sheets. See Note 1110 for further information pertaining to pension and postretirement accounting.


The indenture pertaining to MidAmerican Funding's long-term debt restricts MidAmerican Funding from paying a distribution on its equity securities, unless after making such distribution either its debt to total capital ratio does not exceed 0.67:11.0 and its interest coverage ratio is not less than 2.2:11.0 or its senior secured long-term debt rating is at least BBB or its equivalent. MidAmerican Funding may seek a release from this restriction upon delivery to the indenture trustee of written confirmation from the ratings agencies that without this restriction MidAmerican Funding's senior secured long-term debt would be rated at least BBB+.


324
(20)Segment Information



(18)Segment Information

MidAmerican Funding has identified two2 reportable operating segments: regulated electric and regulated natural gas. The previously reported nonregulated energy segment consisted substantially of MidAmerican Energy's unregulated retail services business, which was transferred to a subsidiary of BHE and is excluded from the information below related to the statements of operations for all periods presented. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. "Other" in the tables below consists of the nonregulated subsidiaries of MidAmerican Funding not engaged in the energy business and parent company interest expense. Refer to Note 109 for a discussion of items affecting income tax (benefit) expense for the regulated electric and natural gas operating segments.


The following tables provide information on a reportable segment basis (in millions):
Years Ended December 31,
202020192018
Operating revenue:
Regulated electric$2,139 $2,237 $2,283 
Regulated natural gas573 660 754 
Other16 30 16 
Total operating revenue$2,728 $2,927 $3,053 
Depreciation and amortization:
Regulated electric$667 $593 $565 
Regulated natural gas49 46 44 
Total depreciation and amortization$716 $639 $609 
Operating income:
Regulated electric$384 $473 $469 
Regulated natural gas64 71 81 
Other
Total operating income$454 $549 $550 
Interest expense:
Regulated electric$281 $259 $208 
Regulated natural gas23 22 19 
Other18 21 20 
Total interest expense$322 $302 $247 
Income tax (benefit) expense:
Regulated electric$(584)$(384)$(273)
Regulated natural gas14 12 16 
Other(4)(5)(5)
Total income tax (benefit) expense$(574)$(377)$(262)
Net income:
Regulated electric$780 $739 $628 
Regulated natural gas45 52 54 
Other(7)(10)(13)
Net income$818 $781 $669 
325


 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Regulated electric$2,108
 $1,985
 $1,837
Regulated gas719
 637
 661
Other19
 9
 17
Total operating revenue$2,846
 $2,631
 $2,515
      
Depreciation and amortization:     
Regulated electric$458
 $436
 $366
Regulated gas42
 43
 41
Total depreciation and amortization$500
 $479
 $407
      
Operating income:     
Regulated electric$485
 $497
 $385
Regulated gas77
 68
 64
Other
 1
 2
Total operating income$562
 $566
 $451
      
Interest expense:     
Regulated electric$196
 $178
 $166
Regulated gas18
 18
 17
Other23
 23
 23
Total interest expense$237
 $219
 $206
      
Income tax (benefit) expense from continuing operations:     
Regulated electric$(212) $(156) $(163)
Regulated gas29
 22
 16
Other(19) (5) (3)
Total income tax (benefit) expense from continuing operations$(202) $(139) $(150)
      
Net income:     
Regulated electric$570
 $512
 $413
Regulated gas35
 32
 33
Other(31) (12) (4)
Income from continuing operations574
 532
 442
Income on discontinued operations
 
 16
Net income$574
 $532
 $458
      
Utility construction expenditures:     
Regulated electric$1,686
 $1,564
 $1,365
Regulated gas87
 72
 81
Total utility construction expenditures$1,773
 $1,636
 $1,446
Years Ended December 31,
202020192018
Capital expenditures:
Regulated electric$1,704 $2,684 $2,223 
Regulated natural gas132 126 109 
Total capital expenditures$1,836 $2,810 $2,332 

As of December 31,
202020192018
Total assets:
Regulated electric$21,083 $20,284 $17,702 
Regulated natural gas1,623 1,547 1,485 
Other15 
Total assets$22,711 $21,840 $19,202 

 As of December 31,
 2017 2016 2015
Total assets:     
Regulated electric$16,105
 $15,304
 $14,161
Regulated gas1,482
 1,424
 1,330
Other34
 19
 183
Total assets$17,621
 $16,747
 $15,674


Goodwill by reportable segment as of December 31, 20172020 and 2016,2019, was as follows (in millions):
Regulated electric$1,191
Regulated gas79
Total$1,270

(21)Regulated electricUnaudited Quarterly Operating Results$1,191 
Regulated natural gas79 
Total$1,270 


326
 2017
 
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
 (In millions)
Operating revenue$696
 $659
 $815
 $676
Operating income107
 136
 288
 31
Net income (loss)102
 131
 383
 (42)



 2016
 
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
 (In millions)
Operating revenue$626
 $585
 $797
 $623
Operating income100
 140
 284
 42
Net income73
 127
 318
 14

Quarterly operating results are affected by, among other things, MidAmerican Energy's seasonal retail electricity prices, the timing of recognition of federal renewable electricity production tax credits related to MidAmerican Energy's wind-powered generating facilities and the seasonal impact of weather on electricity and natural gas sales.


Nevada Power Company and its subsidiaries
Consolidated Financial Section



327


Item 6.        Selected Financial Data


Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.


Item 7.        Management's Discussion and Analysis of Financial Condition and Results of Operations 

General

Nevada Power's revenues and operating income are subject to fluctuations during the year due to impacts that seasonal weather, rate changes, and customer usage patterns have on demand for electric energy and resources. Nevada Power is a summer peaking utility experiencing its highest retail energy sales in response to the demand for air conditioning. The variations in energy usage due to varying weather, customer growth and other energy usage patterns, including energy efficiency and conservation measures, necessitates a continual balancing of loads and resources and purchases and sales of energy under short- and long-term energy supply contracts. As a result, the prudent management and optimization of available resources has a direct effect on the operating and financial performance of Nevada Power. Additionally, the timely recovery of purchased power, fuel costs and other costs and the ability to earn a fair return on investments through rates are essential to the operating and financial performance of Nevada Power.


The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of Nevada Power during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with Nevada Power's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10‑K. Nevada Power's actual results in the future could differ significantly from the historical results.


Results of Operations


Overview

Net income for the year ended December 31, 20172020 was $255$295 million, a decreasean increase of $24$31 million, or 9%12%, compared to 2016, which includes $5 million of expense from the Tax Cuts and Jobs Act enacted on December 22, 2017 (the "2017 Tax Reform"). Excluding the impact of the 2017 Tax Reform, adjusted net income was $260 million, a decrease of $19 million compared to 2016, due to expenses related to the Nevada Power regulatory rate review of $28 million, higher depreciation and amortization,2019, primarily due to $97 million of higher plant placed in-service of $5 million. The decrease was partially offset by higher margins of $11 million, excluding the impact of a decrease in energy efficiency program rate revenue of $22 million (offset in operations and maintenance), and lower interest expense of $9 million on lower deferred charges and lower rates on outstanding debt balances. Margins increasedutility margin mainly due to higher retail customer usage patternsvolumes, revenue recognized due to a favorable regulatory decision and price impacts from changes in sales mix. Retail customer growth, partially offset by lower margins from customers purchasing energy from alternative providers and becomingvolumes, including distribution only service customers.customers, increased 2.0%, primarily due to the favorable impact of weather, largely offset by the impacts of COVID-19, which resulted in lower industrial, distribution only service and commercial customer usage and higher residential customer usage. The increase in net income is offset by $69 million of higher operations and maintenance expenses primarily due to a higher accrual for earnings sharing of $43 million and higher regulatory-directed debits of $27 million.


Net income for the year ended December 31, 20162019 was $279$264 million, a decreasean increase of $9$38 million, or 3%17%, compared to 2015. Net income decreased2018, primarily due to $119 million of lower operations and maintenance, mainly due to lower margins from changes in usage patterns with commercialpolitical activity expenses, a lower accrual for earnings sharing and industrial customers,lower legal settlement costs. The increase is partially offset by $62 million of lower utility margin, mainly due to lower customer usage due to customer demand andvolumes from the unfavorable impacts of weather benefits from changes in contingent liabilities in 2015 and lower average retail rates related to the tax rate reduction rider effective April 2018, and $20 million of higher depreciation and amortization expense, primarily due to higher plant placed in-service. The decrease in net income was offset by higher customer growth and lower interest expense from the redemption of $210 million Series M, 5.950% General and Refunding Mortgage Notesservice.

Non-GAAP Financial Measure

Management utilizes various key financial measures that are prepared in 2016.


Operating revenue and cost of fuel, energy and capacity are key drivers of Nevada Power'saccordance with GAAP, as well as non-GAAP financial measures such as, utility margin, to help evaluate results of operationsoperations. Utility margin is calculated as they encompass retail and wholesale electricity revenue and the direct costs associated with providing electricity to customers. Nevada Power believes that a discussion of gross margin, representing operating revenue less cost of fuel and energy, and capacity, is therefore meaningful.which are captions presented on the Consolidated Statements of Operations.


A comparison of Nevada Power's keycost of fuel and energy is generally recovered from its retail customers through regulatory recovery mechanisms and, as a result, changes in Nevada Power's expenses included in regulatory recovery mechanisms result in comparable changes to revenue. As such, management believes utility margin more appropriately and concisely explains profitability rather than a discussion of revenue and cost of fuel and energy separately. Management believes the presentation of utility margin provides meaningful and valuable insight into the information management considers important to running the business and a measure of comparability to others in the industry.


328


Utility margin is not a measure calculated in accordance with GAAP and should be viewed as a supplement to, and not a substitute for, operating results relatedincome, which is the most directly comparable financial measure prepared in accordance with GAAP. The following table provides a reconciliation of utility margin to gross marginoperating income for the years ended December 31 (in millions):
20202019Change20192018Change
Utility margin:
Operating revenue$1,998 $2,148 $(150)(7)%$2,148 $2,184 $(36)(2)%
Cost of fuel and energy816 943 (127)(13)943 917 26 
Utility margin1,182 1,205 (23)(2)1,205 1,267 (62)(5)
Operations and maintenance299 324 (25)(8)324 443 (119)(27)
Depreciation and amortization361 357 357 337 20 
Property and other taxes47 45 45 41 10 
Operating income$475 $479 $(4)(1)%$479 $446 $33 %






























329


Utility Margin

A comparison of key operating results related to utility margin is as follows:follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue$1,998 $2,148 $(150)(7)%$2,148 $2,184 $(36)(2)%
Cost of fuel and energy816 943 (127)(13)943 917 26 
Utility margin$1,182 $1,205 $(23)(2)%$1,205 $1,267 $(62)(5)%
Sales (GWhs):
Residential10,477 9,311 1,166 13 %9,311 9,970 (659)(7)%
Commercial4,591 4,657 (66)(1)4,657 4,778 (121)(3)
Industrial4,881 5,344 (463)(9)5,344 5,534 (190)(3)
Other195 193 193 214 (21)(10)
Total fully bundled(1)
20,144 19,505 639 19,505 20,496 (991)(5)
Distribution only service2,425 2,613 (188)(7)2,613 2,521 92 
Total retail22,569 22,118 451 22,118 23,017 (899)(4)
Wholesale374 527 (153)(29)527 274 253 92 
Total GWhs sold22,943 22,645 298 %22,645 23,291 (646)(3)%
Average number of retail customers (in thousands):968 951 17 %951 935 16 %
Average revenue per MWh:
Retail - fully bundled(1)
$94.83 $105.88 $(11.05)(10)%$105.88 $102.82 $3.06 %
Wholesale$42.83 $35.87 $6.96 19 %$35.87 $40.31 $(4.44)(11)%
Heating degree days1,753 1,875 (122)(7)%1,875 1,527 348 23 %
Cooling degree days4,236 3,648 588 16 %3,648 4,255 (607)(14)%
Sources of energy (GWhs)(2)(3):
Natural gas13,545 13,161 384 %13,161 13,848 (687)(5)%
Coal— 1,059 (1,059)(100)1,059 1,231 (172)(14)
Renewables66 61 61 69 (8)(12)
Total energy generated13,611 14,281 (670)(5)14,281 15,148 (867)(6)
Energy purchased7,044 6,167 877 14 6,167 6,587 (420)(6)
Total20,655 20,448 207 %20,448 21,735 (1,287)(6)%
Average total cost of energy per MWh(4):
$39.48 $46.06 $(6.58)(14)%$46.06 $42.17 $3.89 %

(1)    Fully bundled includes sales to customers for combined energy, transmission and distribution services.
(2)    The average total cost of energy per MWh and sources of energy excludes -, 153 and 153 GWhs of coal and 1,614, 1,756 and 1,483 GWhs of natural gas generated energy that is purchased at cost by related parties for the years ended December 31, 2020, 2019 and 2018, respectively.
(3)    GWh amounts are net of energy used by the related generating facilities.
(4)    The average total cost of energy per MWh includes only the cost of fuel associated with the generating facilities, purchased power and deferrals.
330


  2017 2016 Change 2016 2015 Change
Gross margin (in millions):              
Operating revenue $2,206
 $2,083
 $123
6 % $2,083
 $2,402
 $(319)(13)%
Cost of fuel, energy and capacity 902
 768
 134
17
 768
 1,084
 (316)(29)
Gross margin $1,304
 $1,315
 $(11)(1) $1,315
 $1,318
 $(3)
               
GWh sold:              
Residential 9,501
 9,394
 107
1 % 9,394
 9,246
 148
2 %
Commercial 4,656
 4,663
 (7)
 4,663
 4,635
 28
1
Industrial 6,201
 7,313
 (1,112)(15) 7,313
 7,571
 (258)(3)
Other 212
 212
 

 212
 214
 (2)(1)
Total fully bundled(1)
 20,570
 21,582
 (1,012)(5) 21,582
 21,666
 (84)
Distribution only service 1,830
 662
 1,168
  *
 662
 407
 255
63
Total retail 22,400
 22,244
 156
1
 22,244
 22,073
 171
1
Wholesale 314
 258
 56
22
 258
 353
 (95)(27)
Total GWh sold 22,714
 22,502
 212
1
 22,502
 22,426
 76

               
Average number of retail customers (in thousands):              
Residential 810
 796
 14
2 % 796
 782
 14
2 %
Commercial 106
 105
 1
1
 105
 104
 1
1
Industrial 2
 2
 

 2
 2
 

Total 918
 903
 15
2
 903
 888
 15
2
               
Average per MWh:              
Revenue - fully bundled(1)
 $104.57
 $94.27
 $10.30
11 % $94.27
 $108.49
 $(14.22)(13)%
Total cost of energy(2)
 $41.84
 $34.00
 $7.84
23 % $34.00
 $48.04
 $(14.04)(29)%
               
Heating degree days 1,265
 1,508
 (243)(16)% 1,508
 1,491
 17
1 %
Cooling degree days 4,044
 4,002
 42
1 % 4,002
 4,069
 (67)(2)%
               
Sources of energy (GWh)(3):
              
Coal 1,449
 1,480
 (31)(2)% 1,480
 1,556
 (76)(5)%
Natural gas 13,172
 14,577
 (1,405)(10) 14,577
 14,567
 10

Other 73
 61
 12
20
 61
 4
 57
  *
Total energy generated 14,694
 16,118
 (1,424)(9) 16,118
 16,127
 (9)
Energy purchased 6,858
 6,462
 396
6
 6,462
 6,431
 31

Total 21,552
 22,580
 (1,028)(5) 22,580
 22,558
 22

*Not meaningful
(1)Fully bundled includes sales to customers for combined energy, transmission and distribution services.
(2)The average total cost of energy per MWh includes the cost of fuel, purchased power and deferrals and does not include other costs.
(3)GWh amounts are net of energy used by the related generating facilities.

Year Ended December 31, 20172020 Compared to Year Ended December 31, 20162019


GrossUtility margin decreased $11$23 million for 20172020 compared to 20162019 primarily due to:
$32the $120 million in lower commercial and industrial retail revenue fromone-time bill credit returned to customers purchasing energy from alternative providers and becoming distribution only service customers and
as a result of the Nevada Power regulatory rate review stipulation ("$22120 million in lower energy efficiency program rate revenue, which is offsetbill credit") (offset in operations and maintenance.maintenance expense and income tax expense) and
$5 million of higher revenue reductions related to customer service agreements.
The decrease in grossutility margin was offset by:
$45 million in higher residential customer volumes from the favorable impact of weather;
$21 million of revenue recognized due to a favorable regulatory decision;
$16 million due to price impacts from changes in sales mix. Retail customer volumes, including distribution-only service customers, increased 2.0% primarily due to the favorable impacts of weather, offset by the impacts of COVID-19, which resulted in lower industrial, commercial and distribution-only service customer usage and higher residential customer usage;
$8 million due to higher EEPRs (offset in operations and maintenance expense);
$7 million of higher transmission and wholesale revenue; and
$5 million of customer growth mainly from residential customers.

Operations and maintenance decreased $25 million, or 8%, for 2020 compared to 2019 primarily due to higher regulatory liability amortization to satisfy a portion of the $120 million bill credit of $94 million (offset in operating revenue) and lower plant operation and maintenance costs, partially offset by a higher accrual for earnings sharing of $43 million, higher regulatory-directed debits of $27 million, relating to the deferral of the non-labor cost savings from the Navajo generating station retirement in 2019, the deferral of costs for the ON Line lease to be returned to customers due to the regulatory-directed reallocation of costs between Nevada Power and Sierra Pacific (offset in depreciation and amortization and other income (expense)) and costs recognized for the $120 million bill credit, and higher energy efficiency program costs (offset in operating revenue).

Depreciation and amortization increased $4 million, or 1%, for 2020 compared to 2019 primarily due to higher plant placed in service, offset by lower depreciation expense on the ON Line lease due to the regulatory-directed reallocation of costs between Nevada Power and Sierra Pacific (offset in operations and maintenance).

Property and other taxes increased $2 million, or 4%, for 2020 compared to 2019 primarily due to a decrease in available abatements and franchise tax audit assessments.

Other income (expense) is favorable $9 million, or 6%, for 2020 compared to 2019 primarily due to lower interest expense on the ON Line lease due to the regulatory-directed reallocation of costs between Nevada Power and Sierra Pacific (offset in operations and maintenance expense), lower pension costs and lower interest expense on long-term debt due to lower interest rates, offset by lower other income due to a licensing agreement with a third party in 2019 and lower cash surrender value of corporate-owned life insurance policies.

Income tax expense decreased $26 million, or 36%, for 2020 compared to 2019. The effective tax rate was 14% in 2020 and 22% in 2019 and decreased due to the one-time recognition of amortization of excess deferred income taxes to satisfy a portion of the $120 million bill credit (offset in operating revenue).

Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

Utility margin decreased $62 million for 2019 compared to 2018 due to:

$51 million in lower customer volumes primarily from the unfavorable impacts of weather;

$11 million in lower retail rates due to the tax rate reduction rider effective April 2018;

$4 million from lower transmission revenue; and

$3 million due to lower retail rates as a result of the 2017 regulatory rate review with rates effective February 2018.


331


The decrease in utility margin was partially offset by:
$21 million in higher other retail revenue primarily from impact fees and revenue relating to customers becoming distribution only service customers;
$9 million from customer usage patterns;
$7 million due to residential and commercial customer growthgrowth.

Operations and
$6 maintenance decreased $(119) million, in higher transmission revenueor (27)%, for 2019 compared to 2018 primarily due to customers becoming distribution only service customers.

Operations and maintenance decreased $1the impacts of adopting ASC 842 of $50 million, lower political activity expenses, a lower accrual for 2017 compared to 2016 due to lower energy efficiency program expense (offset in operating revenue)earnings sharing of $22$19 million and lower planned maintenance, partially offset by higher expenses related to the regulatory rate reviewlegal settlement costs of $25$8 million.


Depreciation and amortization increased $5$20 million, or 2%6%, for 20172019 compared to 20162018 primarily due to the impacts of adopting ASC 842 of $13 million and higher plant placed in-service.in service.


Property and other taxes increased $2$4 million, or 5%10%, for 20172019 compared to 20162018 primarily due to a reductiondecrease in property taxavailable abatements.


Other income (expense) is favorable $3$6 million, or 2%4%, for 20172019 compared to 20162018 primarily due to lower interest expense on deferred chargeslong-term debt and the redemptionregulatory liabilities of $210$36 million, Series M, 5.950% Generalhigher dividend and Refunding Mortgage Notes in 2016,interest income of $7 million and higher other income due to a licensing agreement with a third party of $2 million, partially offset by lower allowance for funds used during constructionthe impacts of adopting ASC 842 of $37 million and expenses related to the regulatory rate review.higher non-service pension expense of $5 million.


Income tax expense increased $10$1 million, or 7%1%, for 20172019 compared to 2016.2018. The effective tax rate was 38%22% in 20172019 and 34%24% in 2016. The increase in the effective tax rate is primarily due to the effects of 2017 Tax Reform2018 and the qualified production activities deduction in 2016.

Year Ended December 31, 2016 Compared to Year Ended December 31, 2015

Gross margindecreased $3 million for 2016 compared to 2015 due to:
$9 million in usage patterns for commercial and industrial customers;
$8 million due to lower customer usage, due to the impacts of weather andnondeductible expenses.
$2 million in transmission revenue.
The decrease in gross margin was offset by:
$16 million due to higher customer growth.

Operations and maintenance increased $22 million, or 6%, for 2016 compared to 2015 due to benefits from changes in contingent liabilities in 2015, higher generating costs and disallowances resulting from regulatory rate reviews.

Depreciation and amortization increased $6 million, or 2%, for 2016 compared to 2015 primarily due to higher plant placed in-service.

Property and other taxes increased$2 million, or 6%, for 2016 compared to 2015 due to a reduction in property tax abatements, offset by lower assessed property values.

Other income (expense) is favorable $8 million, or 5%, for 2016 compared to 2015 primarily due to lower interest expense from the redemption of $210 million Series M, 5.950% General and Refunding Mortgage Notes in 2016.

Income tax expense decreased $16 million, or 10%, for 2016 compared to 2015. The effective tax rate was 34% in 2016 and 36% in 2015. The decrease in the effective tax rate is primarily due to the qualified production activities deduction.

Liquidity and Capital Resources


As of December 31, 2017,2020, Nevada Power's total net liquidity was $457$425 million as follows (in millions):
Cash and cash equivalents $57
Credit facilities(1)
 400
Total net liquidity $457
Credit facilities:  
Maturity dates 2020

(1)Cash and cash equivalents$25 
Refer to Note 6 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding Nevada Power's credit facility.Credit facilities(1)
400 
Total net liquidity$425 
Credit facilities:
Maturity dates2022


(1)Refer to Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding Nevada Power's credit facility.

Operating Activities


Net cash flows from operating activities for the years ended December 31, 20172020 and 20162019 were $667$467 million and $771$701 million, respectively. The change was primarily due to lower collections from customers, mainly due to the $120 million bill credit, higher intercompany tax payments for fuel and higher impact fees receivedenergy costs, the timing of payments for operating costs, lower proceeds from a licensing agreement with a third party in 2016,2019 and decreased collections of customer advances, partially offset by a 2016 contribution to the pension plan.lower payments for income taxes and lower interest payments for long-term debt.


Net cash flows from operating activities for the years ended December 31, 20162019 and 20152018 were $771$701 million and $892$619 million, respectively. The change was primarily due to decreasedlower interest payments for long-term debt, lower payments for operating costs, mainly due to lower political activity expenses, a decrease in fuel costs, lower contributions to the pension plan and proceeds from a licensing agreement with a third party, partially offset by lower collections from customers due to lower retail rates as a resultthe unfavorable impacts of deferred energy adjustment mechanisms, a 2016 contribution to the pension planweather and increased operating costs. The decrease was offset by the receiptdecreased collections of impact fees from MGM Resorts International and Wynn Las Vegas, lower payments for fuel costs, settlement payments of contingent liabilities in 2015 and higher collections from customers for renewable energy programs.customer advances.


Nevada Power's income tax cash flows benefited in 2017, 2016 and 2015 from 50% bonus depreciation on qualifying assets placed in service and from investment tax credits earned on qualifying solar projects. In December 2017, the 2017 Tax Reform was enacted which, among other items, reduces the federal corporate tax rate from 35% to 21% effective January 1, 2018, eliminates bonus depreciation on qualifying regulated utility assets acquired after September 27, 2017 and eliminates the deduction for production activities, but did not impact investment tax credits. Nevada Power believes for qualifying assets acquired on or before September 27, 2017, bonus depreciation will remain available for 2018 and 2019. In February 2018, the Nevada Utilities made filings with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from the 2017 Tax Reform for 2018 and beyond. The filing supports an annual rate reduction of $59 million. Nevada Power expects lower revenue and income taxes as well as lower bonus depreciation benefits as a result of the 2017 Tax Reform and related regulatory treatment. Nevada Power does not expect the 2017 Tax Reform and related regulatory treatment to have a material adverse impact on its cash flows, subject to actual regulatory outcomes. Refer to Regulatory Matters in Item 1 of this Form 10-K for further discussion of regulatory matters associated with the 2017 Tax Reform. The timing of Nevada Power's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.


Investing Activities


Net cash flows from investing activities for the years ended December 31, 20172020 and 20162019 were $(343)$(429) million and $(335)$(407) million, respectively. The change was primarily due to the acquisition of the remaining 25% ownership in the Silverhawk generating station,increased capital expenditures, partially offset by decreasedhigher proceeds from sale of assets primarily related to the regulatory-directed reallocation of ON Line assets between Nevada Power and Sierra Pacific. Refer to "Future Uses of Cash" for further discussion of capital expenditures.

332


Net cash flows from investing activities for the years ended December 31, 20162019 and 20152018 were $(335)$(407) million and $(301)$(297) million, respectively. The change was primarily due to increased capital maintenance expenditures and proceeds received from the saleexpenditures. Refer to "Future Uses of assets and an equity investment in 2015.Cash" for further discussion of capital expenditures.


Financing Activities


Net cash flows from financing activities for the years ended December 31, 20172020 and 20162019 were $(546)$(27) million and $(693)$(390) million, respectively. The change was primarily due to lower repaymentsgreater proceeds from the issuance of long‑termlong-term debt and proceeds from issuance of long‑term debt, partially offset by higherlower dividends paid to NV Energy, Inc. in 2017., partially offset by higher repayments of long-term debt.


Net cash flows from financing activities for the years ended December 31, 20162019 and 20152018 were $(693)$(390) million and $(275)$(267) million, respectively. The change was primarily due to lower proceeds from issuance of long-term debt and higher dividends paid to NV Energy, Inc., of $447 million in 2019, partially offset by lower repayments of long-term debt.


Ability to Issue Debt


Nevada Power currently has an effective automatic registration statement with the SEC to issue an indeterminate amount of long-term debt securities through October 15, 2022. Additionally, Nevada Power's ability to issue debt is primarily impacted by its financing authority from the PUCN. As of December 31, 2017,2020, Nevada Power has financing authority from the PUCN consisting of the ability to: (1)to issue long-term and short-term debt securities so long as the total amount of up to $1.3 billion; (2) refinancing authority up to $1.2debt outstanding (excluding borrowings under Nevada Power's $400 million secured credit facility) does not exceed $3.2 billion as measured at the end of long-term debt securities; and (3) maintain a revolving credit facility of up to $1.3 billion.each calendar quarter. Nevada Power's revolving credit facility contains a financial maintenance covenant which Nevada Power was in compliance with as of December 31, 2017.2020. In addition, certain financing agreements contain covenants which are currently suspended as Nevada Power's senior secured debt is rated investment grade. However, if Nevada Power's senior secured debt ratings fall below investment grade by either Moody's Investor Service or Standard & Poor's, Nevada Power would be subject to limitations under these covenants.


Ability to Issue General and Refunding Mortgage Securities

To the extent Nevada Power has the ability to issue debt under the most restrictive covenants in its financing agreements and has financing authority to do so from the PUCN, Nevada Power's ability to issue secured debt is limited by the amount of bondable property or retired bonds that can be used to issue debt under Nevada Power's indenture.

Nevada Power's indenture creates a lien on substantially all of Nevada Power's properties in Nevada. As of December 31, 2017, $8.4 billion of Nevada Power's assets were pledged. Nevada Power had the capacity to issue $2.9 billion of additional general and refunding mortgage securities as of December 31, 2017 determined on the basis of 70% of net utility property additions. Property additions include plant-in-service and specific assets in construction work-in-progress. The amount of bond capacity listed above does not include eligible property in construction work-in-progress. Nevada Power also has the ability to release property from the lien of Nevada Power's indenture on the basis of net property additions, cash or retired bonds. To the extent Nevada Power releases property from the lien of Nevada Power's indenture, it will reduce the amount of securities issuable under the indenture.

Future Uses of Cash

Capital Expenditures

Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Prudently incurred expenditures for compliance-related items such as pollution control technologies, replacement generation and associated operating costs are generally incorporated into Nevada Power's regulated retail rates. Expenditures for certain assets may ultimately include acquisition of existing assets.

Historical and forecasted capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ending December 31 are as follows (in millions):
 Historical Forecasted
 2015 2016 2017 2018 2019 2020
            
Generation development$45
 $1
 $
 $10
 $42
 $18
Distribution102
 144
 110
 164
 171
 161
Transmission system investment63
 30
 9
 34
 25
 17
Other110
 160
 151
 120
 95
 93
Total$320
 $335
 $270
 $328
 $333
 $289

Nevada Power's forecast capital expenditures include investments that relate to operating projects that consist of routine expenditures for transmission, distribution, generation and other infrastructure needed to serve existing and expected demand.

In April 2017, Nevada Power purchased the remaining 25% interest in the Silverhawk natural gas-fueled generating facility for $77 million. The Public Utilities Commission of Nevada ("PUCN") approved the purchase of the facility in Nevada Power's triennial Integrated Resource Plan filing in December 2015. The purchase price was allocated to the assets acquired, consisting primarily of generation utility plant, and no significant liabilities were assumed.

Contractual Obligations

Nevada Power has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes Nevada Power's material contractual cash obligations as of December 31, 2017 (in millions):
  Payments Due by Periods
  2018 2019 - 2020 2021 - 2022 2023 and Thereafter Total
           
Long-term debt $823
 $500
 $
 $1,309
 $2,632
Interest payments on long-term debt(1)
 155
 171
 154
 1,195
 1,675
Capital leases, including interest(2),(3)
 14
 27
 33
 28
 102
ON Line financial lease, including interest(2)
 44
 88
 88
 728
 948
Fuel and capacity contract commitments(1)
 591
 827
 758
 5,208
 7,384
Fuel and capacity contract commitments (not commercially operable)(1)
 
 37
 49
 421
 507
Operating leases and easements(1)
 7
 15
 15
 54
 91
Asset retirement obligations 4
 10
 14
 63
 91
Maintenance, service and other contracts(1)
 46
 87
 76
 40
 249
Total contractual cash obligations $1,684
 $1,762
 $1,187
 $9,046
 $13,679

(1)Not reflected on the Consolidated Balance Sheets.
(2)Interest is not reflected on the Consolidated Balance Sheets.
(3)Includes fuel and capacity contracts designated as a capital lease.

Nevada Power has other types of commitments that arise primarily from unused lines of credit, letters of credit or relate to construction and other development costs (Liquidity and Capital Resources included within this Item 7 and Note 6), uncertain tax positions (Note 10) and asset retirement obligations (Note 13), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information.

Regulatory Matters

Nevada Power is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further discussion regarding Nevada Power's general regulatory framework and current regulatory matters.

Environmental Laws and Regulations

Nevada Power is subject to federal, state and local laws and regulations regarding air and water quality, RPS, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state and local agencies. Nevada Power believes it is in material compliance with all applicable laws and regulations, although many are subject to interpretation that may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and Nevada Power is unable to predict the impact of the changing laws and regulations on its operations and financial results. Refer to "Liquidity and Capital Resources" for discussion of Nevada Power's forecasted environmental-related capital expenditures.

Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations and "Liquidity and Capital Resources" for Nevada Power's forecasted environmental-related capital expenditures.


Collateral and Contingent Features

Debt of Nevada Power is rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of Nevada Power's ability to, in general, meet the obligations of its issued debt. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.

Nevada Power has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. Nevada Power's secured revolving credit facility does not require the maintenance of a minimum credit rating level in order to draw upon its availability. However, commitment fees and interest rates under the credit facility are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.

In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for unsecured debt as reported by one or more of the three recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017, the applicable credit ratings from the three recognized credit rating agencies were investment grade. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2017, Nevada Power would have been required to post $20 million of additional collateral. Nevada Power's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. Refer to Note 8 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for a discussion of Nevada Power's collateral requirements specific to Nevada Power's derivative contracts.

Inflation

Historically, overall inflation and changing prices in the economies where Nevada Power operates has not had a significant impact on Nevada Power's consolidated financial results. Nevada Power operates under a cost-of-service based rate structure administered by the PUCN and the FERC. Under this rate structure, Nevada Power is allowed to include prudent costs in its rates, including the impact of inflation after Nevada Power experiences cost increases. Fuel and purchase power costs are recovered through a balancing account, minimizing the impact of inflation related to these costs. Nevada Power attempts to minimize the potential impact of inflation on its operations through the use of periodic rate adjustments for fuel and energy costs, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.

New Accounting Pronouncements

For a discussion of new accounting pronouncements affecting Nevada Power, refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by Nevada Power's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with Nevada Power's Summary of Significant Accounting Policies included in Nevada Power's Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

Nevada Power prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Nevada Power defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

Nevada Power continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Nevada Power's ability to recover its costs. Nevada Power believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss). Total regulatory assets were $1.0 billion and total regulatory liabilities were $1.1 billion as of December 31, 2017. Refer to Nevada Power's Note 5 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Nevada Power's regulatory assets and liabilities.

Derivatives

Nevada Power is exposed to the impact of market fluctuations in commodity prices and interest rates. Nevada Power is principally exposed to electricity, natural gas and coal market fluctuations primarily through Nevada Power's obligation to serve retail customer load in its regulated service territory. Nevada Power's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. The actual cost of fuel and purchased power is recoverable through the deferred energy mechanism. Interest rate risk exists on variable-rate debt and future debt issuances.

Nevada Power has established a risk management process that is designed to identify, assess, manage, mitigate, monitor and report each of the various types of risk involved in its business. Nevada Power employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price and interest rate risk. Nevada Power manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed‑rate long-term debt and by monitoring market changes in interest rates. Additionally, Nevada Power may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate Nevada Power's exposure to interest rate risk. Nevada Power does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices. Refer to Nevada Power's Note 8 and 9 of Notes to Consolidated Financial Statements in Item 8 of this Form 10‑K for additional information regarding Nevada Power's derivative contracts.

Measurement Principles

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by accounting principles generally accepted in the United States of America. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Nevada Power transacts. When quoted prices for identical contracts are not available, Nevada Power uses forward price curves. Forward price curves represent Nevada Power's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Interest rate swaps are valued using a financial model which utilizes observable inputs for similar instruments based primarily on market price curves.

Nevada Power bases its forward price curves upon internally developed models, with internal and external fundamental data inputs. Market price quotations for electricity and natural gas trading hubs are not as readily obtainable due to markets that are not active. Given that limited market data exists for these contracts, Nevada Power uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The model incorporates a mid-market pricing convention (the mid‑point price between bid and ask prices) as a practical expedient for valuing its assets and liabilities measured and reported at fair value. The determination of the fair value for derivative contracts not only includes counterparty risk, but also the impact of Nevada Power's nonperformance risk on its liabilities, which as of December 31, 2017, had an immaterial impact to the fair value of its derivative contracts. As such, Nevada Power considers its derivative contracts to be valued using Level 3 inputs. The assumptions used in these models are critical because any changes in assumptions could have a significant impact on the estimated fair value of the contracts. As of December 31, 2017, Nevada Power had a net derivative liability of $3 million related to contracts where Nevada Power uses internal models with significant unobservable inputs.


Classification and Recognition Methodology

Nevada Power's commodity derivative contracts are probable of inclusion in regulated rates, and changes in the estimated fair value of derivative contracts are recorded as regulatory assets. Accordingly, amounts are generally not recognized in earnings until the contracts are settled and the amounts are reflected in regulated rates. As of December 31, 2017, Nevada Power had $3 million recorded as a regulatory asset related to derivative contracts on the Consolidated Balance Sheets.

Impairment of Long-Lived Assets

Nevada Power evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2017, the impacts of regulation are considered when evaluating the carrying value of regulated assets.

The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what Nevada Power would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, load growth, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect Nevada Power's results of operations.

Income Taxes

In determining Nevada Power's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by Nevada Power's various regulatory jurisdictions. Nevada Power's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Nevada Power recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Nevada Power's federal, state and local income tax examinations is uncertain, Nevada Power believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Nevada Power's consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Nevada Power's Note 10 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Nevada Power's income taxes.

Nevada Power is probable to pass income tax benefits and expense related to the federal tax rate change from 35% to 21%, certain property‑related basis differences and other various differences on to its customers. As of December 31, 2017, these amounts were recognized as a net regulatory liability of $670 million and will be included in regulated rates when the temporary differences reverse.

Revenue Recognition - Unbilled Revenue

Revenue is recognized as electricity is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters. At the end of each month, energy provided to customers since their last billing is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $111 million as of December 31, 2017. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Estimates are reversed in the following month when actual revenue is recorded.


Item 7A.     Quantitative and Qualitative Disclosures About Market Risk

Nevada Power's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. Nevada Power's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which Nevada Power transacts. The following discussion addresses the significant market risks associated with Nevada Power's business activities. Nevada Power has established guidelines for credit risk management. Refer to Notes 2 and 8 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Nevada Power's contracts accounted for as derivatives.

Commodity Price Risk

Nevada Power is exposed to the impact of market fluctuations in commodity prices and interest rates. Nevada Power is principally exposed to electricity, natural gas and coal market fluctuations primarily through Nevada Power's obligation to serve retail customer load in its regulated service territory. Nevada Power's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. The actual cost of fuel and purchased power is recoverable through the deferred energy mechanism. Interest rate risk exists on variable-rate debt and future debt issuances. Nevada Power does not engage in proprietary trading activities. To mitigate a portion of its commodity price risk, Nevada Power uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. Nevada Power does not hedge its commodity price risk, thereby exposing the unhedged portion to changes in market prices. Nevada Power's exposure to commodity price risk is generally limited by its ability to include commodity costs in regulated rates through its deferred energy mechanism, which is subject to disallowance and regulatory lag that occurs between the time the costs are incurred and when the costs are included in regulated rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.

The table that follows summarizes Nevada Power's price risk on commodity contracts accounted for as derivatives, and shows the effects of a hypothetical 10% increase and 10% decrease in forward market prices by the expected volumes for these contracts as of that date. The selected hypothetical change does not reflect what could be considered the best or worst case scenarios (dollars in millions).

 Fair Value - Estimated Fair Value after
  Net Hypothetical Change in Price
 Liability 10% increase 10% decrease
As of December 31, 2017:     
Commodity derivative contracts$(3) $(3) $(3)
      
As of December 31, 2016:     
Commodity derivative contracts$(14) $(15) $(13)

Nevada Power's commodity derivative contracts not designated as hedging contracts are recoverable from customers in regulated rates and, therefore, net unrealized gains and losses associated with interim price movements on commodity derivative contracts do not expose Nevada Power to earnings volatility. As of December 31, 2017 and 2016, a net regulatory asset of $3 million and $14 million, respectively, was recorded related to the net derivative liability of $3 million and $14 million, respectively. The settled cost of these commodity derivative contracts is generally included in regulated rates.


Interest Rate Risk

Nevada Power is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. Nevada Power manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, Nevada Power's fixed-rate long-term debt does not expose Nevada Power to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if Nevada Power were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of Nevada Power's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 6 and 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of Nevada Power's short- and long-term debt.

As of December 31, 2017 and 2016, Nevada Power had no short- and long-term variable-rate obligations that expose Nevada Power to the risk of increased interest expense in the event of increases in short-term interest rates. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on Nevada Power's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 2017 and 2016.

Credit Risk

Nevada Power is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Nevada Power's counterparties have similar economic, industry or other characteristics and due to direct and indirect relationships among the counterparties. Before entering into a transaction, Nevada Power analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, Nevada Power enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, Nevada Power exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.
As of December 31, 2017, Nevada Power's aggregate credit exposure from energy related transactions were not material, based on settlement and mark-to-market exposures, net of collateral.


Item 8.        Financial Statements and Supplementary Data

Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Changes in Shareholder's Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Shareholder and Board of Directors of
Nevada Power Company
Las Vegas, Nevada

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Nevada Power Company and subsidiaries ("Nevada Power") as of December 31, 2017 and 2016, the related consolidated statements of operations, changes in shareholder's equity, and cash flows for each of the three years in the period ended December 31, 2017, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of Nevada Power as of December 31, 2017 and 2016, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of Nevada Power's management. Our responsibility is to express an opinion on Nevada Power’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to Nevada Power in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Nevada Power is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of Nevada Power's internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
/s/Deloitte & Touche LLP

Las Vegas, Nevada
February 23, 2018
We have served as Nevada Power’s auditor since 1987.


NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions, except share data)

 As of December 31,
 2017 2016
ASSETS
    
Current assets:   
Cash and cash equivalents$57
 $279
Accounts receivable, net238
 243
Inventories59
 73
Regulatory assets28
 20
Other current assets44
 38
Total current assets426
 653
    
Property, plant and equipment, net6,877
 6,997
Regulatory assets941
 1,000
Other assets35
 39
    
Total assets$8,279
 $8,689
    
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:   
Accounts payable$156
 $187
Accrued interest50
 50
Accrued property, income and other taxes63
 93
Regulatory liabilities91
 37
Current portion of long-term debt and financial and capital lease obligations842
 17
Customer deposits73
 78
Other current liabilities16
 39
Total current liabilities1,291
 501
    
Long-term debt and financial and capital lease obligations2,233
 3,049
Regulatory liabilities1,030
 416
Deferred income taxes767
 1,474
Other long-term liabilities280
 277
Total liabilities5,601
 5,717
    
Commitments and contingencies (Note 14)   
    
Shareholder's equity:   
Common stock - $1.00 stated value, 1,000 shares authorized, issued and outstanding
 
Other paid-in capital2,308
 2,308
Retained earnings374
 667
Accumulated other comprehensive loss, net(4) (3)
Total shareholder's equity2,678
 2,972
    
Total liabilities and shareholder's equity$8,279
 $8,689
    
The accompanying notes are an integral part of the consolidated financial statements.


NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
      
Operating revenue$2,206
 $2,083
 $2,402
      
Operating costs and expenses:     
Cost of fuel, energy and capacity902
 768
 1,084
Operations and maintenance393
 394
 372
Depreciation and amortization308
 303
 297
Property and other taxes40
 38
 36
Total operating costs and expenses1,643
 1,503
 1,789
      
Operating income563
 580
 613
      
Other income (expense):     
Interest expense(179) (185) (190)
Allowance for borrowed funds
1
 4
 3
Allowance for equity funds1
 2
 4
Other, net25
 24
 20
Total other income (expense)(152) (155) (163)
      
Income before income tax expense411
 425
 450
Income tax expense156
 146
 162
Net income$255
 $279
 $288
      
The accompanying notes are an integral part of these consolidated financial statements.


NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY
(Amounts in millions, except shares)

          Accumulated  
      Other   Other Total
  Common Stock Paid-in Retained Comprehensive Shareholder's
  Shares Amount Capital Earnings Loss, Net Equity
Balance, December 31, 2014 1,000
 $
 $2,308
 $583
 $(3) $2,888
Net income 
 
 
 288
 
 288
Dividends declared 
 
 
 (13) 
 (13)
Balance, December 31, 2015 1,000
 
 2,308
 858
 (3) 3,163
Net income 
 
 
 279
 
 279
Dividends declared 
 
 
 (469) 
 (469)
Other equity transactions

 
 
 
 (1) 
 (1)
Balance, December 31, 2016 1,000
 
 2,308
 667
 (3) 2,972
Net income 
 
 
 255
 
 255
Dividends declared 
 
 
 (548) 
 (548)
Other equity transactions

 
 
 
 
 (1) (1)
Balance, December 31, 2017 1,000
 $
 $2,308
 $374
 $(4) $2,678
             
The accompanying notes are an integral part of these consolidated financial statements.


NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
      
Cash flows from operating activities:     
Net income$255
 $279
 $288
Adjustments to reconcile net income to net cash flows from operating activities:     
(Gain) loss on nonrecurring items(1) 1
 (3)
Depreciation and amortization308
 303
 297
Deferred income taxes and amortization of investment tax credits94
 78
 162
Allowance for equity funds(1) (2) (4)
Changes in regulatory assets and liabilities50
 131
 4
Deferred energy(16) (21) 176
Amortization of deferred energy16
 (107) 36
Other, net(3) 
 13
Changes in other operating assets and liabilities:     
Accounts receivable and other assets8
 26
 (40)
Inventories6
 7
 9
Accrued property, income and other taxes(26) 63
 
Accounts payable and other liabilities(23) 13
 (46)
Net cash flows from operating activities667
 771
 892
      
Cash flows from investing activities:     
Capital expenditures(270) (335) (320)
Acquisitions(77) 
 
Proceeds from sale of assets4
 
 9
Other, net
 
 10
Net cash flows from investing activities(343) (335) (301)
      
Cash flows from financing activities:     
Proceeds from issuance of long-term debt91
 
 
Repayments of long-term debt and financial and capital lease obligations(89) (224) (262)
Dividends paid(548) (469) (13)
Net cash flows from financing activities(546) (693) (275)
      
Net change in cash and cash equivalents(222) (257) 316
Cash and cash equivalents at beginning of period279
 536
 220
Cash and cash equivalents at end of period$57
 $279
 $536
      
The accompanying notes are an integral part of these consolidated financial statements.


NEVADA POWER COMPANY AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)    Organization and Operations

Nevada Power Company, together with its subsidiaries ("Nevada Power"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Sierra Pacific Power Company ("Sierra Pacific") and certain other subsidiaries. Nevada Power is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers primarily in the Las Vegas, North Las Vegas, Henderson and adjoining areas. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").

(2)    Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of Nevada Power and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the years ended December 31, 2017, 2016 and 2015. Certain amounts in the prior period Consolidated Financial Statements have been reclassified to conform to the current period presentation. Such reclassifications did not impact previously reported operating income, net income or retained earnings.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

Nevada Power prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Nevada Power defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

Nevada Power continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Nevada Power's ability to recover its costs. Nevada Power believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss).


Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted amounts are included in other assets and other current assets on the Consolidated Balance Sheets.

Allowance for Doubtful Accounts

Accounts receivable are stated at the outstanding principal amount, net of an estimated allowance for doubtful accounts. The allowance for doubtful accounts is based on Nevada Power's assessment of the collectibility of amounts owed to Nevada Power by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. Nevada Power also has the ability to assess deposits on customers who have delayed payments or who are deemed to be a credit risk. The change in the balance of the allowance for doubtful accounts, which is included in accounts receivable, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31 (in millions):
 2017 2016 2015
Beginning balance$12
 $13
 $14
Charged to operating costs and expenses, net15
 16
 16
Write-offs, net(11) (17) (17)
Ending balance$16
 $12
 $13

Derivatives

Nevada Power employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price and interest rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements.

Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked‑to‑market and settled amounts are recognized as cost of fuel, energy and capacity on the Consolidated Statements of Operations.

For Nevada Power's derivative contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities. For a derivative contract not probable of inclusion in rates, changes in the fair value are recognized in earnings.


Inventories

Inventories consist mainly of materials and supplies totaling $56 million and $60 million as of December 31, 2017 and 2016, respectively, and fuel, which includes coal stock, stored natural gas and fuel oil, totaling $3 million and $13 million as of December 31, 2017 and 2016, respectively. The cost is determined using the average cost method. Materials are charged to inventory when purchased and are expensed or capitalized to construction work in process, as appropriate, when used. Fuel costs are recovered from retail customers through the base tariff energy rates and deferred energy accounting adjustment charges approved by the Public Utilities Commission of Nevada ("PUCN").

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. Nevada Power capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. The cost of repairs and minor replacements are charged to expense when incurred with the exception of costs for generation plant maintenance under certain long-term service agreements. Costs under these agreements are expensed straight-line over the term of the agreements as approved by the PUCN.

Depreciation and amortization are generally computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by Nevada Power's various regulatory authorities. Depreciation studies are completed by Nevada Power to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as a non-current regulatory liability on the Consolidated Balance Sheets. As actual removal costs are incurred, the associated liability is reduced.

Generally when Nevada Power retires or sells a component of regulated property, plant and equipment depreciated using the composite method, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings with the exception of material gains or losses on regulated property, plant and equipment depreciated on a straight-line basis, which is then recorded to a regulatory asset or liability.

Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, are capitalized as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. The rate applied to construction costs is the lower of the PUCN allowed rate of return and rates computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC"). After construction is completed, Nevada Power is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets. Nevada Power's AFUDC rate used during 2017 and 2016 was 8.09%.

Asset Retirement Obligations

Nevada Power recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. Nevada Power's AROs are primarily associated with its generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability on the Consolidated Balance Sheets. The costs are not recovered in rates until the work has been completed.


Impairment of Long-Lived Assets

Nevada Power evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2017, the impacts of regulation are considered when evaluating the carrying value of regulated assets.

Income Taxes

Berkshire Hathaway includes Nevada Power in its consolidated United States federal income tax return. Consistent with established regulatory practice, Nevada Power's provision for income taxes has been computed on a separate return basis.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using estimated income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of other comprehensive income ("OCI") are charged or credited directly to OCI. On December 22, 2017, the Tax Cuts and Jobs Act ("2017 Tax Reform") was signed into law which, among other items, reduces the federal corporate tax rate from 35% to 21%. Changes in deferred income tax assets and liabilities that are associated with income tax benefits and expense for the federal tax rate change from 35% to 21%, certain property‑related basis differences and other various differences that Nevada Power deems probable to be passed on to its customers are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties.

In determining Nevada Power's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by Nevada Power's various regulatory jurisdictions. Nevada Power's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Nevada Power recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Nevada Power's federal, state and local income tax examinations is uncertain, Nevada Power believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Nevada Power's consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

Revenue Recognition

Revenue is recognized as electricity is delivered or services are provided. Revenue recognized includes billed and unbilled amounts. As of December 31, 2017 and 2016, unbilled revenue was $111 million and $91 million, respectively, and is included in accounts receivable, net on the Consolidated Balance Sheets. Rates are established by regulators or contractual arrangements. When preliminary rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued. Nevada Power records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.

Nevada Power primarily buys energy and natural gas to satisfy its customer load requirements. Due to changes in retail customer load requirements, Nevada Power may not take physical delivery of the energy or natural gas. Nevada Power may sell the excess energy or natural gas to the wholesale market. In such instances, it is Nevada Power's policy to record such sales net in cost of fuel, energy and capacity.


Unamortized Debt Premiums, Discounts and Issuance Costs

Premiums, discounts and financing costs incurred for the issuance of long-term debt are amortized over the term of the related financing on a straight-line basis.

Segment Information

Nevada Power currently has one segment, which includes its regulated electric utility operations.

New Accounting Pronouncements

In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. Nevada Power adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, "Statement of Cash Flows - Overall." The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Nevada Power adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Nevada Power adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements.

In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. In January 2018, the FASB issued ASU No. 2018-01 that provides for an optional transition practical expedient allowing companies to not have to evaluate existing land easements if they were not previously accounted for under ASC Topic 840, "Leases." This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. Nevada Power plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.


In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016 and 2017, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. Nevada Power adopted this guidance effective January 1, 2018 under the modified retrospective method and the adoption will not have an impact on its Consolidated Financial Statements but will increase the disclosures included within Notes to Consolidated Financial Statements. The timing and amount of revenue recognized after adoption of the new guidance will not be different than before as a majority of revenue is recognized when Nevada Power has the right to invoice as it corresponds directly with the value to the customer of Nevada Power's performance to date. Nevada Power's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by customer class.

(3)    Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
 Depreciable Life 2017 2016
Utility plant:     
Generation30 - 55 years $3,707
 $4,271
Distribution20 - 65 years 3,314
 3,231
Transmission45 - 65 years 1,860
 1,846
General and intangible plant5 - 65 years 793
 738
Utility plant  9,674
 10,086
Accumulated depreciation and amortization  (2,871) (3,205)
Utility plant, net  6,803
 6,881
Other non-regulated, net of accumulated depreciation and amortization45 years 1
 2
Plant, net  6,804
 6,883
Construction work-in-progress  73
 114
Property, plant and equipment, net  $6,877
 $6,997

Almost all of Nevada Power's plant is subject to the ratemaking jurisdiction of the PUCN and the FERC. Nevada Power's depreciation and amortization expense, as authorized by the PUCN, stated as a percentage of the depreciable property balances as of December 31, 2017, 2016 and 2015 was 3.2%, 3.2% and 3.0%, respectively. Nevada Power is required to file a utility plant depreciation study every six years as a companion filing with the triennial general rate case filings.

Construction work-in-progress is related to the construction of regulated assets.

During 2017, Nevada Power performed a depreciation study, in which the depreciation rates will be implemented in January 2018. The study results in shorter estimated useful lives at the Navajo Generating Station and longer average service lives for various other utility plant groups. The net effect of these changes, based on the study, will increase depreciation and amortization expense by $7 million annually based on depreciable plant balances at the time of the change.

Acquisitions

In April 2017, Nevada Power purchased the remaining 25% interest in the Silverhawk natural gas-fueled generating facility for $77 million. The Public Utilities Commission of Nevada ("PUCN") approved the purchase of the facility in Nevada Power's triennial Integrated Resource Plan filing in December 2015. The purchase price was allocated to the assets acquired, consisting primarily of generation utility plant, and no significant liabilities were assumed.


(4)    Jointly Owned Utility Facilities

Under joint facility ownership agreements, Nevada Power, as tenants in common, has undivided interests in jointly owned generation and transmission facilities. Nevada Power accounts for its proportionate share of each facility and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include Nevada Power's share of the expenses of these facilities.

The amounts shown in the table below represent Nevada Power's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2017 (dollars in millions):

 Nevada     Construction
 Power's Utility Accumulated Work-in-
 Share Plant Depreciation Progress
        
Navajo Generating Station11% $220
 $152
 $
ON Line Transmission Line24
 146
 16
 
Other transmission facilitiesVarious
 48
 26
 
Total  $414
 $194
 $

(5)    Regulatory Matters

Regulatory assets represent costs that are expected to be recovered in future rates. Nevada Power's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
 Weighted    
 Average    
 Remaining Life 2017 2016
      
Decommissioning costs6 years $231
 $114
Deferred operating costs12 years 169
 127
Merger costs from 1999 merger27 years 130
 136
Employee benefit plans(1)
8 years 89
 105
Asset retirement obligations7 years 72
 74
Abandoned projects3 years 58
 75
Legacy meters15 years 56
 60
ON Line deferrals36 years 47
 44
Deferred energy costs2 years 46
 46
Deferred income taxes(2)

N/A 
 141
OtherVarious 71
 98
Total regulatory assets  $969
 $1,020
      
Reflected as:     
Current assets  $28
 $20
Other assets  941
 1,000
Total regulatory assets  $969
 $1,020

(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.
(2)Amounts primarily represent income tax benefits related to accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.


Nevada Power had regulatory assets not earning a return on investment of $363 million and $560 million as of December 31, 2017 and 2016, respectively. The regulatory assets not earning a return on investment primarily consist of merger costs from the 1999 merger, asset retirement obligations, deferred operating costs, a portion of the employee benefit plans, losses on reacquired debt and deferred energy costs. Regulatory assets not earning a return as of December 31, 2016 also included deferred income taxes.

Regulatory liabilities represent amounts to be returned to customers in future periods. Nevada Power's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
 Weighted    
 Average    
 Remaining Life 2017 2016
      
Deferred income taxes(1)
33 years $670
 $9
Cost of removal(2)
31 years 307
 294
Impact fees6 years 89
 90
Energy efficiency program

1 year 27
 37
OtherVarious 28
 23
Total regulatory liabilities  $1,121
 $453
      
Reflected as:     
Current liabilities  $91
 $37
Other long-term liabilities  1,030
 416
Total regulatory liabilities  $1,121
 $453

(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse. See Note 10 for further discussion of 2017 Tax Reform impacts.

(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing regulated property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.

Deferred Energy

Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the PUCN. Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Consolidated Statements of Operations but rather is deferred and recorded as a regulatory asset on the Consolidated Balance Sheets and would be included in the table above as deferred energy costs. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs and is included in the table above as deferred energy costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel, energy and capacity in future time periods.

Regulatory Rate Review

In June 2017, Nevada Power filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue increase of $29 million, or 2%, but requested no incremental annual revenue relief. In December 2017, the PUCN issued an order which reduced Nevada Power's revenue requirement by $26 million and requires Nevada Power to share 50% of revenues related to equity returns above 9.7%. As a result of the order, Nevada Power recorded expense of $28 million primarily due to the reduction of a regulatory asset to return to customers revenue collected for costs not incurred. In January 2018, Nevada Power filed a petition for clarification of certain findings and directives in the order. The new rates were effective in February 2018.


Energy Efficiency Program Rates ("EEPR") and Energy Efficiency Implementation Rates ("EEIR")

EEPR was established to allow Nevada Power to recover the costs of implementing energy efficiency programs and EEIR was established to offset the negative impacts on revenue associated with the successful implementation of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared by Nevada Power and approved by the PUCN in integrated resource plan proceedings. To the extent Nevada Power's earned rate of return exceeds the rate of return used to set base general rates, Nevada Power is required to refund to customers EEIR revenue previously collected for that year. In March 2017, Nevada Power filed an application to reset the EEIR and EEPR and refund the EEIR revenue received in 2016, including carrying charges. In September 2017, the PUCN issued an order accepting a stipulation requiring Nevada Power to refund the 2016 revenue and reset the rates as filed effective October 1, 2017. The EEIR liability for Nevada Power is $10 million, which is included in current regulatory liabilities on the Consolidated Balance Sheets as of December 31, 2017 and 2016.

Chapter 704B Applications

Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one megawatt ("MW") or more to file with the PUCN an application to purchase energy from alternative providers of a new electric resource and become distribution only service customers. On a case-by-case basis, the PUCN will assess the application and may deny or grant the application subject to conditions, including paying an impact fee, paying on-going charges and receiving approval for specific alternative energy providers and terms. The impact fee and on-going charges are assessed to alleviate the burden on other Nevada customers for the applicant's share of previously committed investments and long-term renewable contracts and are set at a level designed such that the remaining customers are not subjected to increased costs.

In May 2015, MGM Resorts International ("MGM") and Wynn Las Vegas, LLC ("Wynn"), filed applications with the PUCN to purchase energy from alternative providers of a new electric resource and become distribution only service customers of Nevada
Power. In December 2015, the PUCN granted the applications subject to conditions, including paying an impact fee, on-going charges and receiving approval for specific alternative energy providers and terms. In December 2015, the applicants filed petitions for reconsideration. In January 2016, the PUCN granted reconsideration and updated some of the terms, including removing a limitation related to energy purchased indirectly from NV Energy. In September 2016, MGM and Wynn paid impact fees of $82 million and $15 million, respectively. In October 2016, MGM and Wynn became distribution only service customers and started procuring energy from another energy supplier. In April 2017, Wynn filed a motion with the PUCN seeking relief from the January 2016 order and requested the PUCN adopt an alternative impact fee and revise on-going charges associated with retirement of assets and high cost renewable contracts. This request is still pending. In May 2017, a stipulation reached between MGM, Regulatory Operations Staff and the Bureau of Consumer Protection was filed requiring Nevada Power to reduce the original $82 million impact fee by $16 million and apply the credit against MGM's remaining on-going charge obligation. In June 2017, the PUCN approved the stipulation as filed.

In September 2016, Switch, Ltd. ("Switch"), a customer of Nevada Power, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Nevada Power. In December 2016, the PUCN approved a stipulation agreement that allows Switch to purchase energy from alternative providers subject to conditions, including paying an impact fee to Nevada Power. In May 2017, Switch paid impact fees of $27 million and, in June 2017, Switch became a distribution only service customer and started procuring energy from another energy supplier.

In November 2016, Caesars Enterprise Service ("Caesars"), a customer of Nevada Power, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Nevada
Power. In March 2017, the PUCN approved the application allowing Caesars to purchase energy from alternative providers subject to conditions, including paying an impact fee. In March 2017, Caesars provided notice that it intends to pay the impact fee monthly for six years and proceed with purchasing energy from alternative providers. In July 2017, Caesars made the required compliance filings and, in September 2017, the PUCN issued an order allowing Caesars to acquire electric energy and ancillary services from another energy supplier and become a distribution only service customer of Nevada Power. In December 2017, Caesars provided notice that it intends to transition eligible meters in the Nevada Power service territory to unbundled electric service in February 2018 at the earliest.

Emissions Reduction and Capacity Retirement Plan ("ERCR Plan")

In March 2017, Nevada Power retired Reid Gardner Unit 4, a 257-MW coal-fueled generating facility. The early retirement was approved by the PUCN in December 2016 as a part of Nevada Power's second amendment to the ERCR Plan. The remaining net book value of $151 million was moved from property, plant and equipment, net to noncurrent regulatory assets on the Consolidated Balance Sheet in March 2017, in compliance with the ERCR Plan. Refer to Note 14 for additional information on the ERCR Plan.

(6)Credit Facility

Nevada Power has a $400 million secured credit facility expiring in June 2020 with two one-year extension options subject to lender consent. The credit facility, which is for general corporate purposes and provide for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Nevada Power's option, plus a spread that varies based on Nevada Power's credit ratings for its senior secured long‑term debt securities. As of December 31, 2017 and 2016, Nevada Power had no borrowings outstanding under the credit facility. Amounts due under Nevada Power's credit facility are collateralized by Nevada Power's general and refunding mortgage bonds. The credit facility requires Nevada Power's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.

(7)    Long-Term Debt and Financial and Capital Lease Obligations

Nevada Power's long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
 Par Value 2017 2016
General and refunding mortgage securities:     
6.500% Series O, due 2018$324
 $324
 $324
6.500% Series S, due 2018499
 499
 498
7.125% Series V, due 2019500
 499
 499
6.650% Series N, due 2036367
 357
 357
6.750% Series R, due 2037349
 346
 345
5.375% Series X, due 2040250
 247
 247
5.450% Series Y, due 2041250
 236
 236
Tax-exempt refunding revenue bond obligations:     
Fixed-rate series:     
1.800% Pollution Control Bonds Series 2017A, due 2032(1)
40
 40
 
1.600% Pollution Control Bonds Series 2017, due 2036(1)
40
 39
 
1.600% Pollution Control Bonds Series 2017B, due 2039(1)
13
 13
 
Variable-rate series - 1.890% to 1.928%     
Pollution Control Bonds Series 2006A, due 2032
 
 38
Pollution Control Bonds Series 2006, due 2036
 
 37
Capital and financial lease obligations - 2.750% to 11.600%, due through 2054475
 475
 485
Total long-term debt and financial and capital leases$3,107
 $3,075
 $3,066
      
Reflected as:     
Current portion of long-term debt and financial and capital lease obligations  $842
 $17
Long-term debt and financial and capital lease obligations  2,233
 3,049
Total long-term debt and financial and capital leases  $3,075
 $3,066

(1)Subject to mandatory purchase by Nevada Power in May 2020 at which date the interest rate may be adjusted from time to time.


Annual Payment on Long-Term Debt and Financial and Capital Leases

The annual repayments of long-term debt and capital and financial leases for the years beginning January 1, 2018 and thereafter, are as follows (in millions):
  Long-term Capital and Financial  
  Debt Lease Obligations Total
       
2018 $823
 $75
 $898
2019 500
 76
 576
2020 
 76
 76
2021 
 80
 80
2022 
 75
 75
Thereafter 1,309
 760
 2,069
Total 2,632
 1,142
 3,774
Unamortized premium, discount and debt issuance cost
 (32) 
 (32)
Executory costs 
 (92) (92)
Amounts representing interest 
 (575) (575)
Total $2,600
 $475
 $3,075

The issuance of General and Refunding Mortgage Securities by Nevada Power is subject to PUCN approval and is limited by available property and other provisions of the mortgage indentures. As of December 31, 2017, approximately $8.4 billion (based on original cost) of Nevada Power's property was subject to the liens of the mortgages.

Financial and Capital Lease Obligations

In 1984, Nevada Power entered into a 30-year capital lease for the Pearson Building with five, five-year renewal options beginning in year 2015. In February 2010, Nevada Power amended this capital lease agreement to include the lease of the adjoining parking lot and to exercise three of the five-year renewal options beginning in year 2015. There remain two additional renewal options which could extend the lease an additional ten years. Capital assets of $24 million and $25 million were included in property, plant and equipment, net as of December 31, 2017 and 2016, respectively.
In 2007, Nevada Power entered into a 20-year lease, with three 10-year renewal options, to occupy land and building for its Beltway Complex operations center in southern Nevada. Nevada Power accounts for the building portion of the lease as a capital lease and the land portion of the lease as an operating lease. Nevada Power transferred operations to the facilities in June 2009. Capital assets of $6 million and $7 million were included in property, plant and equipment, net as of December 31, 2017 and 2016, respectively.
Nevada Power has long-term energy purchase contracts which qualify as capital leases. The leases were entered into between the years 1989 and 1990 and became commercially operable through 1993. The terms of the leases are for 30 years and expire between the years 2022-2023. Capital assets of $34 million and $38 million were included in property, plant and equipment, net as of December 31, 2017 and 2016, respectively.
Nevada Power has master leasing agreements of which various pieces of equipment qualify as capital leases. The remaining equipment is treated as operating leases. Lease terms average seven years under the master lease agreement. Capital assets of $3 million and $1 million were included in property, plant and equipment, net as of December 31, 2017 and 2016, respectively.
ON Line was placed in-service on December 31, 2013. The Nevada Utilities entered into a long-term transmission use agreement, in which the Nevada Utilities have 25% interest and Great Basin Transmission South, LLC has 75% interest. Refer to Note 4 for additional information. The Nevada Utilities' share of the long-term transmission use agreement and ownership interest is split at 95% for Nevada Power and 5% for Sierra Pacific. The term is for 41 years with the agreement ending December 31, 2054. Payments began on January 31, 2014. ON Line assets of $396 million and $402 million were included in property, plant and equipment, net as of December 31, 2017 and 2016, respectively.


(8)    Risk Management and Hedging Activities

Nevada Power is exposed to the impact of market fluctuations in commodity prices and interest rates. Nevada Power is principally exposed to electricity, natural gas and coal market fluctuations primarily through Nevada Power's obligation to serve retail customer load in its regulated service territory. Nevada Power's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. The actual cost of fuel and purchased power is recoverable through the deferred energy mechanism. Interest rate risk exists on variable-rate debt and future debt issuances. Nevada Power does not engage in proprietary trading activities.

Nevada Power has established a risk management process that is designed to identify, assess, manage, mitigate, monitor and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, Nevada Power uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. Nevada Power manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed‑rate long-term debt and by monitoring market changes in interest rates. Additionally, Nevada Power may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate Nevada Power's exposure to interest rate risk. Nevada Power does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices.

There have been no significant changes in Nevada Power's accounting policies related to derivatives. Refer to Notes 2 and 9 for additional information on derivative contracts.

The following table, which excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of Nevada Power's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions):
  Other Other  
  Current Long-term  
  Liabilities Liabilities Total
As of December 31, 2017:      
Commodity derivative liabilities(1)
 $(2) $(1) $(3)
       
As of December 31, 2016:      
Commodity derivative liabilities(1)
 $(7) $(7) $(14)

(1)Nevada Power's commodity derivatives not designated as hedging contracts are included in regulated rates and as of December 31, 2017 and 2016, a regulatory asset of $3 million and $14 million, respectively, was recorded related to the derivative liability of $3 million and $14 million, respectively.

Derivative Contract Volumes

The following table summarizes the net notional amounts of outstanding derivative contracts with indexed and fixed price terms that comprise the mark-to-market values as of December 31 (in millions):
  Unit of    
  Measure 2017 2016
Electricity sales Megawatt hours 
 (2)
Natural gas purchases Decatherms 125
 114


Credit Risk

Nevada Power is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Nevada Power's counterparties have similar economic, industry or other characteristics and due to direct and indirect relationships among the counterparties. Before entering into a transaction, Nevada Power analyzes the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, Nevada Power enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, Nevada Power exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

Collateral and Contingent Features

In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base certain collateral requirements on credit ratings for unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide rights to demand cash or other security in the event of a credit rating downgrade ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017, credit ratings from the three recognized credit rating agencies were investment grade.

The aggregate fair value of Nevada Power's derivative contracts in liability positions with specific credit-risk-related contingent features was $1 million and $2 million as of December 31, 2017 and 2016, respectively, which represents the amount of collateral to be posted if all credit risk related contingent features for derivative contracts in liability positions had been triggered. Nevada Power's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation or other factors.

(9)
Fair Value Measurements

The carrying value of Nevada Power's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Nevada Power has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:

Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Nevada Power has the ability to access at the measurement date.
Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).
Level 3 - Unobservable inputs reflect Nevada Power's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Nevada Power develops these inputs based on the best information available, including its own data.


The following table presents Nevada Power's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):
 Input Levels for Fair Value Measurements  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Assets - investment funds$2
 $
 $
 $2
        
Liabilities - commodity derivatives$
 $
 $(3) $(3)
        
As of December 31, 2016:       
Assets:       
Money market mutual funds(1)
$220
 $
 $
 $220
Investment funds6
 
 
 6
 $226
 $
 $
 $226
        
Liabilities - commodity derivatives$
 $
 $(14) $(14)

(1)Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Nevada Power transacts. When quoted prices for identical contracts are not available, Nevada Power uses forward price curves. Forward price curves represent Nevada Power's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Nevada Power bases its forward price curves upon internally developed models, with internal and external fundamental data inputs. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to markets that are not active. Given that limited market data exists for these contracts, Nevada Power uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The model incorporates a mid-market pricing convention (the mid‑point price between bid and ask prices) as a practical expedient for valuing its assets and liabilities measured and reported at fair value. The determination of the fair value for derivative contracts not only includes counterparty risk, but also the impact of Nevada Power's nonperformance risk on its liabilities, which as of December 31, 2017, had an immaterial impact to the fair value of its derivative contracts. As such, Nevada Power considers its derivative contracts to be valued using Level 3 inputs. Refer to Note 8 for further discussion regarding Nevada Power's risk management and hedging activities.

Nevada Power's investments in money market mutual funds and equity securities are accounted for as available-for-sale securities and are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value.

The following table reconciles the beginning and ending balances of Nevada Power's commodity derivative liabilities measured at fair value on a recurring basis using significant Level 3 inputs for the years ended December 31 (in millions):
  2017 2016 2015
Beginning balance $(14) $(22) $(30)
Changes in fair value recognized in regulatory assets (3) (4) 
Settlements 14
 12
 8
Ending balance $(3) $(14) $(22)


Nevada Power's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Nevada Power's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Nevada Power's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Nevada Power's long-term debt as of December 31 (in millions):
 2017 2016
 Carrying Fair Carrying Fair
 Value Value Value Value
        
Long-term debt$2,600
 $3,088
 $2,581
 $3,040

(10)
Income Taxes

Tax Cuts and Jobs Act

The 2017 Tax Reform impacts many areas of income tax law. The most material items include the reduction of the federal corporate tax rate from 35% to 21% effective January 1, 2018, limitations on bonus depreciation for utility property and the elimination of the deduction for production activities. GAAP requires the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. As a result of the 2017 Tax Reform, Nevada Power reduced deferred income tax liabilities $787 million. As it is probable the change in deferred taxes will be passed back to customers through regulatory mechanisms, Nevada Power increased net regulatory liabilities by $792 million.

In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. Nevada Power has recorded the impacts of the 2017 Tax Reform and believes all the impacts to be complete with the exception of the interpretation of the bonus depreciation rules. Nevada Power has determined the amounts recorded and the interpretation relating to this item to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. Nevada Power believes its interpretations for bonus depreciation to be reasonable, however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.

Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
 2017 2016 2015
      
Current – Federal$62
 $68
 $
Deferred – Federal95
 79
 163
Investment tax credits(1) (1) (1)
Total income tax expense$156
 $146
 $162

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
 2017 2016 2015
      
Federal statutory income tax rate35% 35 % 35%
Effect of ratemaking1
 
 1
Effect of tax rate change1
 
 
Other1
 (1) 
Effective income tax rate38% 34 % 36%


The net deferred income tax liability consists of the following as of December 31 (in millions):
 2017 2016
Deferred income tax assets:   
Regulatory liabilities$201
 $83
Capital and financial leases100
 170
Employee benefits18
 29
Customer advances14
 23
Federal net operating loss and credit carryforwards
 5
Other6
 16
Total deferred income tax assets339
 326
Valuation allowance
 (5)
Total deferred income tax assets, net339
 321
    
Deferred income tax liabilities:   
Property related items(796) (1,293)
Regulatory assets(206) (321)
Capital and financial leases(97) (165)
Other(7) (16)
Total deferred income tax liabilities(1,106) (1,795)
Net deferred income tax liability$(767) $(1,474)

The United States federal jurisdiction is the only significant income tax jurisdiction for NV Energy. In July 2012, the United States Internal Revenue Service and the Joint Committee on Taxation concluded their examination of NV Energy with respect to its United States federal income tax returns for December 31, 2005 through December 31, 2008.

(11)
Related Party Transactions

Nevada Power has an intercompany administrative services agreement with BHE and its subsidiaries. Amounts charged to Nevada Power under this agreement totaled $2 million for the year ended December 31, 2017, 2016 and 2015.

Kern River Gas Transmission Company, an indirect subsidiary of BHE, provided natural gas transportation and other services to Nevada Power of $66 million, $68 million and $68 million for each of the years ended December 31, 2017, 2016 and 2015. As of December 31, 2017 and 2016, Nevada Power's Consolidated Balance Sheets included amounts due to Kern River Gas Transmission Company of $5 million.

Nevada Power provided electricity and other services to PacifiCorp, an indirect subsidiary of BHE, of $3 million, $2 million and $3 million for the years ended December 31, 2017, 2016 and 2015, respectively. There were no receivables associated with these services as of December 31, 2017 and 2016. PacifiCorp provided electricity and the sale of renewable energy credits to Nevada Power of $- million, $- million and $2 million for the years ended December 31, 2017, 2016 and 2015, respectively. There were no payables associated with these transactions as of December 31, 2017 and 2016.

Nevada Power provided electricity to Sierra Pacific of $104 million, $78 million and $69 million for the years ended December 31, 2017, 2016 and 2015, respectively. Receivables associated with these transactions were $10 million and $45 million as of December 31, 2017 and 2016, respectively. Nevada Power purchased electricity from Sierra Pacific of $21 million, $17 million and $2 million for the years ended December 31, 2017, 2016 and 2015, respectively. Payables associated with these transactions were $- million and $12 million as of December 31, 2017 and 2016, respectively.


Nevada Power incurs intercompany administrative and shared facility costs with NV Energy and Sierra Pacific. These transactions are governed by an intercompany service agreement and are priced at cost. Nevada Power provided services to NV Energy of $- million, $1 million, $1 million for each of the years ending December 31, 2017, 2016 and 2015, respectively. NV Energy provided services to Nevada Power of $10 million, $10 million and $12 million for the years ending December 31, 2017, 2016 and 2015, respectively. Nevada Power provided services to Sierra Pacific of $27 million, $24 million and $22 million for the years ended December 31, 2017, 2016 and 2015, respectively. Sierra Pacific provided services to Nevada Power of $17 million, $14 million and $16 million for the years ended December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017 and 2016, Nevada Power's Consolidated Balance Sheets included amounts due to NV Energy of $29 million and $32 million, respectively. There were no receivables due from NV Energy as of December 31, 2017 and 2016. As of December 31, 2017 and 2016, Nevada Power's Consolidated Balance Sheets included receivables due from Sierra Pacific of $5 million and $4 million, respectively. There were no payables due to Sierra Pacific as of December 31, 2017 and 2016.

Nevada Power is party to a tax-sharing agreement with NV Energy and NV Energy is part of the Berkshire Hathaway consolidated United States federal income tax return. Federal income taxes payable to NV Energy were $38 million and $68 million as of December 31, 2017 and 2016, respectively. Nevada Power made cash payments of $89 million, $- million and $- million for federal income taxes for the years ended December 31, 2017, 2016 and 2015, respectively.

Certain disbursements for accounts payable and payroll are made by NV Energy on behalf of Nevada Power and reimbursed automatically when settled by the bank. These amounts are recorded as accounts payable at the time of disbursement.

(12)    Retirement Plan and Postretirement Benefits

Nevada Power is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Nevada Power. Nevada Power contributed $1 million, $36 million and $- million to the Qualified Pension Plan for the year ended December 31, 2017, 2016 and 2015, respectively. Nevada Power contributed $1 million, $- million and $- million to the Non-Qualified Pension Plans for the year ended December 31, 2017, 2016 and 2015, respectively. Nevada Power did not make any contributions to the Other Postretirement Plans for the year ended December 31, 2017, 2016 and 2015. Amounts attributable to Nevada Power were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net.

Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following as of December 31 (in millions):
 2017 2016
Qualified Pension Plan -   
Other long-term liabilities$(23) $(24)
    
Non-Qualified Pension Plans:   
Other current liabilities(1) (1)
Other long-term liabilities(10) (9)
    
Other Postretirement Plans -   
Other long-term liabilities1
 (4)

(13)    Asset Retirement Obligations

Nevada Power estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.


Nevada Power does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain generation, transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Consolidated Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. These accruals totaled $307 million and $294 million as of December 31, 2017 and 2016, respectively.

The following table presents Nevada Power's ARO liabilities by asset type as of December 31 (in millions):
 2017 2016
    
Waste water remediation$39
 $38
Evaporative ponds and dry ash landfills11
 22
Asbestos3
 4
Solar3
 2
Other24
 17
Total asset retirement obligations$80
 $83

The following table reconciles the beginning and ending balances of Nevada Power's ARO liabilities for the years ended December 31 (in millions):
 2017 2016
    
Beginning balance$83
 $85
Change in estimated costs6
 4
Retirements(13) (10)
Accretion4
 4
Ending balance$80
 $83
    
Reflected as:   
Other current liabilities$4
 $20
Other long-term liabilities76
 63
 $80
 $83

In 2008, Nevada Power signed an administrative order of consent as owner and operator of Reid Gardner Generating Station Unit Nos. 1, 2 and 3 and as co-owner and operating agent of Unit No. 4. Based on the administrative order of consent, Nevada Power recorded estimated AROs and capital remediation costs. However, actual costs of work under the administrative order of consent may vary significantly once the scope of work is defined and additional site characterization has been completed. In connection with the termination of the co-ownership arrangement, effective October 22, 2013, between Nevada Power and California Department of Water Resources ("CDWR") for the Reid Gardner Generating Station Unit No. 4, Nevada Power and CDWR entered into a cost-sharing agreement that sets forth how the parties will jointly share in costs associated with all investigation, characterization and, if necessary, remedial activities as required under the administrative order of consent.

Certain of Nevada Power's decommissioning and reclamation obligations relate to jointly-owned facilities, and as such, Nevada Power is committed to pay a proportionate share of the decommissioning or reclamation costs. In the event of a default by any of the other joint participants, the respective subsidiary may be obligated to absorb, directly or by paying additional sums to the entity, a proportionate share of the defaulting party's liability. Management has identified legal obligations to retire generation plant assets specified in land leases for Nevada Power's jointly-owned Navajo Generating Station and the Higgins Generating Station. Provisions of the lease require the lessees to remove the facilities upon request of the lessors at the expiration of the leases. Nevada Power's estimated share of the decommissioning and reclamation obligations are primarily recorded as ARO liabilities in other long-term liabilities on the Consolidated Balance Sheets.


(14)
Commitments and Contingencies

Environmental Laws and Regulations

Nevada Power is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. Nevada Power believes it is in material compliance with all applicable laws and regulations.

Senate Bill 123

In June 2013, the Nevada State Legislature passed Senate Bill No. 123 ("SB 123"), which included the retirement of coal plants and replacing the capacity with renewable facilities and other generating facilities. In May 2014, Nevada Power filed its ERCR Plan in compliance with SB 123. In July 2015, Nevada Power filed an amendment to its ERCR Plan with the PUCN which was approved in September 2015. In June 2015, the Nevada State Legislature passed Assembly Bill No. 498, which modified the capacity replacement components of SB 123.

Consistent with the ERCR Plan, Nevada Power acquired a 272-MW natural gas co-generating facility in 2014, acquired a 210-MW natural gas peaking facility in 2014, constructed a 15-MW solar photovoltaic facility in 2015, contracted two renewable power purchase agreements with 100-MW solar photovoltaic generating facilities in 2015, contracted a renewable power purchase agreement with 100-MW solar photovoltaic generating facility in 2016 and acquired the remaining 130 MW, 25%, of the Silverhawk natural gas-fueled generating facility in April 2017, of which 54 MW were approved as part of the ERCR Plan. Nevada Power has the option to acquire 35 MW of nameplate renewable energy capacity in the future under the ERCR Plan, subject to PUCN approval. Nevada Power retired Reid Gardner Units 1, 2, and 3, 300 MW of coal-fueled generation, in 2014 and Reid Gardner Unit 4, 257 MW of coal-fueled generation, in March 2017. These transactions are related to Nevada Power's compliance with SB 123, resulting in the retirement of 812 MW of coal-fueled generation by 2019.

Legal Matters

Nevada Power is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Nevada Power does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Nevada Power is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts and are described below.

Commitments

Nevada Power has the following firm commitments that are not reflected on the Consolidated Balance Sheet. Minimum payments as of December 31, 2017 are as follows (in millions):
 2018 2019 2020 2021 2022 2023 and Thereafter Total
Contract type:             
Fuel, capacity and transmission contract commitments$591
 $450
 $377
 $378
 $380
 $5,208
 $7,384
Fuel and capacity contract commitments (not commercially operable)
 15
 22
 24
 25
 421
 507
Operating leases and easements7
 7
 8
 8
 7
 54
 91
Maintenance, service and other contracts46
 44
 43
 39
 37
 40
 249
Total commitments$644
 $516
 $450
 $449
 $449
 $5,723
 $8,231


Fuel and Capacity Contract Commitments

Purchased Power

Nevada Power has several contracts for long-term purchase of electric energy which have been approved by the PUCN. The expiration of these contracts range from 2018 to 2067. Purchased power includes contracts which meet the definition of a lease. Nevada Power's operations and maintenance expense for purchase power contracts which met the lease criteria for 2017, 2016 and 2015 were $310 million, $302 million and $264 million, respectively, and are recorded as cost of fuel, energy and capacity on the Consolidated Statements of Operations.

Coal and Natural Gas

Nevada Power has a contract for the transportation of coal that extends through 2018. Additionally, gas transportation contracts expire from 2022 to 2032 and the gas supply contract expires from 2018 to 2019.

Fuel and Capacity Contract Commitments - Not Commercially Operable

Nevada Power has several contracts for long-term purchase of electric energy in which the facility remains under development. Amounts represent the estimated payments under renewable energy power purchase contracts, which have been approved by the PUCN and are contingent upon the developers obtaining commercial operation and their ability to deliver power.

Operating Leases and Easements

Nevada Power has non-cancelable operating leases primarily for office equipment, office space, certain operating facilities, vehicles and land. These leases generally require Nevada Power to pay for insurance, taxes and maintenance applicable to the leased property. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. Nevada Power also has non-cancelable easements for land. Operations and maintenance expense on non-cancelable operating leases and easements totaled $9 million, $13 million and $11 million for the years ended December 31, 2017, 2016 and 2015, respectively.

Maintenance, Service and Other Contracts

Nevada Power has long-term service agreements for the performance of maintenance on generation units. Obligation amounts are based on estimated usage. The estimated expiration of these service agreements range from 2019 to 2026.

(15)    Supplemental Cash Flow Disclosures

The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
 2017 2016 2015
      
Supplemental disclosure of cash flow information -     
Interest paid, net of amounts capitalized$167
 $173
 $186
Income taxes paid$89
 $
 $
      
Supplemental disclosure of non-cash investing and financing transactions:     
Accruals related to property, plant and equipment additions$18
 $19
 $51
Capital and financial lease obligations incurred$
 $(1) $(5)


(16)    Unaudited Quarterly Operating Results (in millions)
 Three-Month Periods Ended
 March 31, June 30, September 30, December 31,
 2017 2017 2017 2017
        
Operating revenues$392
 $574
 $819
 $421
Operating income52
 157
 317
 37
Net income10
 77
 176
 (8)
   ��    
 Three-Month Periods Ended
 March 31, June 30, September 30, December 31,
 2016 2016 2016 2016
        
Operating revenues$399
 $525
 $766
 $393
Operating income46
 141
 324
 69
Net income3
 66
 188
 22


Sierra Pacific Power Company and its subsidiaries
Consolidated Financial Section


Item 6.        Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.        Management's Discussion and Analysis of Financial Condition and Results of Operations 

General

Sierra Pacific's revenues and operating income are subject to fluctuations during the year due to impacts that seasonal weather, rate changes, and customer usage patterns have on demand for electric energy, natural gas and resources. Sierra Pacific's electric segment is summer peaking experiencing its highest retail energy sales in response to the demand for air conditioning and its natural gas segment is winter peaking due to sales in response to the demand for heating. The variations in energy usage due to varying weather, customer growth and other energy usage patterns, including energy efficiency and conservation measures, necessitates a continual balancing of loads and resources and purchases and sales of energy under short- and long-term energy supply contracts. As a result, the prudent management and optimization of available resources has a direct effect on the operating and financial performance of Sierra Pacific. Additionally, the timely recovery of purchased power, fuel costs and other costs and the ability to earn a fair return on investments through rates are essential to the operating and financial performance of Sierra Pacific.

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of Sierra Pacific during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth and other factors. This discussion should be read in conjunction with Sierra Pacific's historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10‑K. Sierra Pacific's actual results in the future could differ significantly from the historical results.

Results of Operations

Net income for the year ended December 31, 2017 was $109 million, an increase of $25 million, or 30%, compared to 2016, which includes $1 million of tax benefit from the Tax Cuts and Jobs Act enacted on December 22, 2017 (the "2017 Tax Reform"). Excluding the impact of 2017 Tax Reform, adjusted net income was $108 million, an increase of $24 million compared to 2016, due to lower interest on deferred charges and long-term debt of $11 million, higher electric margins of $8 million, lower depreciation and amortization primarily due to regulatory amortizations of $4 million and lower operating costs of $4 million. The increase in electric margin was due to the impacts of weather, higher transmission revenue and customer usage patterns, partially offset by lower wholesale revenue due to lower volumes.

Net income for the year ended December 31, 2016 was $84 million, an increase of $1 million, or 1%, compared to 2015. Net income increased due to a decrease in interest expense from financing transactions in 2016 of $8 million, increased customer growth and usage primarily due to the impacts of weather of $7 million and lower planned maintenance costs. The increase in net income was partially offset by disallowances resulting from the settlement of the regulatory rate review in 2016 of $5 million, higher depreciation and amortization primarily due to higher plant placed in-service of $5 million, a settlement payment associated with terminated transmission service in 2015 of $4 million and lower margins from a decrease in wholesale demand charges and changes in usage patterns with commercial and industrial customers.

Operating revenue; cost of fuel, energy and capacity; and natural gas purchased for resale are key drivers of Sierra Pacific's results of operations as they encompass retail and wholesale electricity and natural gas revenue and the direct costs associated with providing electricity and natural gas to customers. Sierra Pacific believes that a discussion of gross margin, representing operating revenue less cost of fuel, energy and capacity and natural gas purchased for resale, is therefore meaningful.


Electric Gross Margin

A comparison of Sierra Pacific's key operating results related to regulated electric gross margin for the years ended December 31 is as follows:
  2017 2016 Change 2016 2015 Change
Gross margin (in millions):              
Operating electric revenue $713
 $702
 $11
2 % $702
 $810
 $(108)(13)%
Cost of fuel, energy and capacity 268
 265
 3
1
 265
 374
 (109)(29)
Gross margin $445
 $437
 $8
2
 $437
 $436
 $1

               
GWh sold:              
Residential 2,492
 2,375
 117
5 % 2,375
 2,315
 60
3 %
Commercial 2,954
 2,933
 21
1
 2,933
 2,942
 (9)
Industrial 3,176
 3,014
 162
5
 3,014
 2,973
 41
1
Other 16
 16
 

 16
 16
 

Total fully bundled(1)
 8,638
 8,338
 300
4
 8,338
 8,246
 92
1
Distribution only service 1,394
 1,360
 34
3
 1,360
 1,304
 56
4
Total retail 10,032
 9,698
 334
3
 9,698
 9,550
 148
2
Wholesale 561
 662
 (101)(15) 662
 664
 (2)
Total GWh sold 10,593
 10,360
 233
2
 10,360
 10,214
 146
1
               
Average number of retail customers (in thousands):              
Residential 295
 291
 4
1 % 291
 288
 3
1 %
Commercial 47
 47
 

 47
 46
 1
2
Total 342
 338
 4
1
 338
 334
 4
1
               
Average per MWh:              
Revenue - retail fully bundled(1)
 $76.90
 $78.08
 $(1.18)(2)% $78.08
 $90.85
 $(12.77)(14)%
Revenue - wholesale $50.29
 $52.05
 $(1.76)(3)% $52.05
 $61.37
 $(9.32)(15)%
Total cost of energy(2)
 $27.35
 $28.16
 $(0.81)(3)% $28.16
 $38.80
 $(10.64)(27)%
               
Heating degree days 4,523
 4,185
 338
8 % 4,185
 4,122
 63
2 %
Cooling degree days 1,401
 1,088
 313
29 % 1,088
 1,194
 (106)(9)%
               
Sources of energy (GWh)(3):
              
Coal 457
 751
 (294)(39)% 751
 1,210
 (459)(38)%
Natural gas 4,280
 4,290
 (10)
 4,290
 3,981
 309
8
Other 36
 
 36

 
 
 

Total energy generated 4,773
 5,041
 (268)(5) 5,041
 5,191
 (150)(3)
Energy purchased 5,017
 4,383
 634
14
 4,383
 4,441
 (58)(1)
Total 9,790
 9,424
 366
4
 9,424
 9,632
 (208)(2)

(1)    Fully bundled includes sales to customers for combined energy, transmission and distribution services.
(2)    The average total cost of energy per MWh includes the cost of fuel, purchased power and deferrals and does not include other costs.
(3)    GWh amounts are net of energy used by the related generating facilities.

Natural Gas Gross Margin

A comparison of key results related to regulated natural gas gross margin for the years ended December 31 is as follows:
  2017 2016 Change 2016 2015 Change
Gross margin (in millions):              
Operating natural gas revenue $99
 $110
 $(11)(10)% $110
 $137
 $(27)(20)%
Natural gas purchased for resale 42
 55
 (13)(24) 55
 84
 (29)(35)
Gross margin $57
 $55
 $2
4
 $55
 $53
 $2
4
               
Dth sold:              
Residential 10,291
 9,207
 1,084
12 % 9,207
 8,649
 558
6 %
Commercial 5,153
 4,679
 474
10
 4,679
 4,198
 481
11
Industrial 1,822
 1,548
 274
18
 1,548
 1,470
 78
5
Total retail 17,266
 15,434
 1,832
12
 15,434
 14,317
 1,117
8
               
Average number of retail customers (in thousands) 164
 162
 2
1 % 162
 159
 3
2 %
Average revenue per retail Dth sold: $5.73
 $7.13
 $(1.40)(20)% $7.13
 $9.57
 $(2.44)(25)%
Average cost of natural gas per retail Dth sold $2.43
 $3.56
 $(1.13)(32)% $3.56
 $5.87
 $(2.31)(39)%
Heating degree days 4,523
 4,185
 338
8 % 4,185
 4,122
 63
2 %

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016

Electric gross margin increased $8 million, or 2%, for 2017 compared to 2016 due to:
$8 million higher customer usage primarily from the impacts of weather;
$3 million in higher transmission revenue and
$2 million from customer usage patterns.
The increase in gross margin was offset by:
$6 million in decreased wholesale revenue due to lower volumes.

Natural gas gross margin increased $2 million, or 4%, for 2017 compared to 2016 primarily due to higher customer usage from the impacts of weather.

Operations and maintenance decreased $4 million, or 2%, for 2017 compared to 2016 primarily due to disallowances resulting from the settlement of the regulatory rate review in 2016 of $5 million.

Depreciation and amortization decreased $4 million, or 3%, for 2017 compared to 2016 primarily due to the expiration of various regulatory amortizations.

Other income (expense) is favorable $13 million, or 28%, for 2017 compared to 2016 primarily due to a decrease in interest expense from lower rates on outstanding debt balances, lower interest expense on deferred charges and an increase in allowance for funds used during construction.

Income tax expense increased $6 million, or 12%, for 2017 compared to 2016. The effective tax rate was 34% for 2017 and 37% for 2016. The decrease in the effective tax rate is primarily due to the effects of 2017 Tax Reform.


Year Ended December 31, 2016 Compared to Year Ended December 31, 2015

Electric gross margin increased $1 million for 2016 compared to 2015 due to:
$4 million in higher energy efficiency program rate revenue, which is offset in operating and maintenance expense;
$3 million in higher customer growth and
$2 million in higher customer usage primarily due to the impacts of weather.
The increase in gross margin was offset by:
$4 million related to a settlement payment associated with terminated transmission service in 2015;
$2 million decrease in wholesale demand charges and
$2 million in usage patterns for commercial and industrial customers.

Natural gas gross margin increased $2 million, or 4%, for 2016 compared to 2015 primarily due to higher customer usage from the impacts of weather.

Operations and maintenance increased $3 million, or 2%, for 2016 compared to 2015 due to disallowances resulting from the settlement of the regulatory rate review in 2016 of $5 million and higher energy efficiency program costs, which are fully recovered in operating revenue, partially offset by decreased planned maintenance costs.

Depreciation and amortization increased $5 million, or 4%, for 2016 compared to 2015 primarily due to higher plant placed in-service.

Other income (expense) is favorable $7 million, or 13%, for 2016 compared to 2015 primarily due to a decrease in interest expense from financing transactions in 2016.

Income tax expense increased $2 million, or 4%, for 2016 compared to 2015. The effective tax rate was 37% for 2016 and 36% for 2015.

Liquidity and Capital Resources

As of December 31, 2017, Sierra Pacific's total net liquidity was $174 million as follows (in millions):
Cash and cash equivalents $4
   
Credit facilities(1)
 250
Less -  
Letters of credit and tax-exempt bond support (80)
Net credit facilities 170
   
Total net liquidity $174
Credit facilities:  
Maturity dates 2020

(1)
Refer to Note 6 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion regarding Sierra Pacific's credit facility.
Operating Activities

Net cash flows from operating activities for the years ended December 31, 2017 and 2016 were $182 million and $243 million, respectively. The change was due to higher payments for fuel costs, partially offset by lower contributions to the pension plan.

Net cash flows from operating activities for the years ended December 31, 2016 and 2015 were $243 million and $342 million, respectively. The change was due to decreased collections from customers due to lower retail rates as a result of deferred energy adjustment mechanisms, contributions to the pension plan and lower customer advances, partially offset by lower payments for fuel costs.


Sierra Pacific's income tax cash flows benefited in 2017, 2016 and 2015 from 50% bonus depreciation on qualifying assets placed in service. In December 2017, the 2017 Tax Reform was enacted which, among other items, reduces the federal corporate tax rate from 35% to 21% effective January 1, 2018, eliminates bonus depreciation on qualifying regulated utility assets acquired after September 27, 2017 and eliminates the deduction for production activities. Sierra Pacific believes for qualifying assets acquired on or before September 27, 2017, bonus depreciation will remain available for 2018 and 2019. In February 2018, the Nevada Utilities made filings with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from the 2017 Tax Reform for 2018 and beyond. The filing supports an annual rate reduction of $25 million. Sierra Pacific expects lower revenue and income taxes as well as lower bonus depreciation benefits as a result of the 2017 Tax Reform and related regulatory treatment. Sierra Pacific does not expect the 2017 Tax Reform and related regulatory treatment to have a material adverse impact on its cash flows, subject to actual regulatory outcomes. Refer to Regulatory Matters in Item 1 of this Form 10-K for further discussion of regulatory matters associated with the 2017 Tax Reform. The timing of Sierra Pacific's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2017 and 2016 were $(186) million and $(194) million, respectively. The change was primarily due to decreased capital expenditures.

Net cash flows from investing activities for the years ended December 31, 2016 and 2015 were $(194) million and $(250) million, respectively. The change was primarily due to decreased capital expenditures.

Financing Activities

Net cash flows from financing activities for the years ended December 31, 2017 and 2016 were $(47) million and $(100) million, respectively. The change was due to lower repayments of long-term debt and lower dividends paid to NV Energy, Inc. in 2017, offset by lower proceeds from issuance of long-term debt.

Net cash flows from financing activities for the years ended December 31, 2016 and 2015 were $(100) million and $(8) million, respectively. The change was due to financing transactions in 2016 and higher dividends paid to NV Energy, Inc.

Ability to Issue Debt

Sierra Pacific's ability to issue debt is primarily impacted by its financing authority from the PUCN. As of December 31, 2017, Sierra Pacific has financing authority from the PUCN consisting of the ability to: (1) issue additional long-term debt securities of up to $350 million; (2) refinance up to $55 million of long-term debt securities; and (3) maintain a revolving credit facility of up to $600 million. Sierra Pacific's revolving credit facility contains a financial maintenance covenant which Sierra Pacific was in compliance with as of December 31, 2017. In addition, certain financing agreements contain covenants which are currently suspended as Sierra Pacific's senior secured debt is rated investment grade. However, if Sierra Pacific's senior secured debt ratings fall below investment grade by either Moody's Investor Service or Standard & Poor's, Sierra Pacific would be subject to limitations under these covenants.

Ability to Issue General and Refunding Mortgage Securities


To the extent Nevada Power has the ability to issue debt under the most restrictive covenants in its financing agreements and has financing authority to do so from the PUCN, Nevada Power's ability to issue secured debt is limited by the amount of bondable property or retired bonds that can be used to issue debt under Nevada Power's indenture.

Nevada Power's indenture creates a lien on substantially all of Nevada Power's properties in Nevada. As of December 31, 2020, $9.1 billion of Nevada Power's assets were pledged. Nevada Power had the capacity to issue $3.4 billion of additional general and refunding mortgage securities as of December 31, 2020, determined on the basis of 70% of net utility property additions. Property additions include plant-in-service and specific assets in construction work-in-progress. The amount of bond capacity listed above does not include eligible property in construction work-in-progress. Nevada Power also has the ability to release property from the lien of Nevada Power's indenture on the basis of net property additions, cash or retired bonds. To the extent Nevada Power releases property from the lien of Nevada Power's indenture, it will reduce the amount of securities issuable under the indenture.

Long-Term Debt

In May 2020, Nevada Power repurchased and entered into a re-offering of the following series of fixed-rate tax-exempt bonds: $40 million of its Coconino County Pollution Control Refunding Revenue Bonds, Series 2017A, due 2032; $13 million of its Coconino County Pollution Control Refunding Revenue Bonds, Series 2017B, due 2039; and $40 million of its Clark County Pollution Control Refunding Revenue Bonds, Series 2017, due 2036. The Series 2017A bond was offered at a fixed rate of 1.875% and the Series 2017B and Series 2017 bonds were offered at a fixed rate of 1.65%.

In January 2020, Nevada Power issued $425 million of 2.40% General and Refunding Mortgage Notes, Series DD, due 2030 and $300 million of its 3.125% General and Refunding Mortgage Notes, Series EE, due 2050. Nevada Power used the net proceeds for the early redemption of $575 million of its 2.75% General and Refunding Mortgage Notes, Series BB, due April 2020 and for general corporate purposes.


333


Future Uses of Cash

Capital Expenditures

Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Prudently incurred expenditures for compliance-related items such as pollution control technologies, replacement generation and associated operating costs are generally incorporated into Nevada Power's regulated retail rates. Expenditures for certain assets may ultimately include acquisition of existing assets.

Historical and forecasted capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ending December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
Electric distribution137 209 232 225 211 229 
Electric transmission13 24 35 54 155 151 
Solar generation— — — 11 126 157 
Other146 171 188 128 151 130 
Total$296 $404 $455 $418 $643 $667 

Nevada Power's Fourth Amendment to the 2018 Joint IRP proposed an increase in solar generation and electric transmission. Nevada Power has included estimates from its latest IRP filing in its forecast capital expenditures for 2021 through 2023. These estimates are likely to change as a result of the RFP process and some are still be pending PUCN approval. Nevada Power's historical and forecast capital expenditures include the following:

Electric distribution includes both growth projects and operating expenditures consisting of routine expenditures for distribution needed to serve existing and expected demand.
Electric transmission includes both growth projects and operating expenditures. Growth projects primarily relate to the Nevada Utilities' Greenlink Nevada transmission expansion program. In this project, the company has proposed to build a 350-mile, 525 kV transmission line, known as Greenlink West, connecting the Ft. Churchill substation to the Northwest substation to the Harry Allen substation. This project is subject to regulatory approvals. Operating expenditures consist of routine expenditures for transmission and other infrastructure needed to serve existing and expected demand.
Solar generation investment includes expenditures for a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage, known as the Dry Lake generating facility, that will be developed in Clark County, Nevada. Commercial operation is expected by the end of 2023.
Other investments include both growth projects and operating expenditures consisting of routine expenditures for generation, other operating projects and other infrastructure needed to serve existing and expected demand.

334


Contractual Obligations

Nevada Power has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes Nevada Power's material contractual cash obligations as of December 31, 2020 (in millions):
Payments Due by Periods
20212022 - 20232024 - 20252026 and ThereafterTotal
Long-term debt$— $— $— $2,534 $2,534 
Interest payments on long-term debt(1)
115 230 229 1,311 1,885 
ON Line finance lease liability10 23 27 235 295 
Interest payments on ON Line finance lease liability(1)
25 47 43 237 352 
Operating and finance lease liabilities(2)
18 24 16 23 81 
Interest payments on operating and finance lease liabilities(1)
20 
Fuel and capacity contract commitments(1)(3)
570 737 659 3,197 5,163 
Fuel and capacity contract commitments (not commercially operable)(1)(3)
— 109 426 4,965 5,500 
Construction commitments(1)
72 231 — — 303 
Easements(1)
10 43 61 
Asset retirement obligations26 20 16 17 79 
Maintenance, service and other contracts(1)
48 76 35 165 
Total contractual cash obligations$894 $1,516 $1,458 $12,570 $16,438 

(1)Not reflected on the Consolidated Balance Sheets.
(2)Includes fuel and capacity contracts designated as a finance lease.
(3)Purchased power includes estimated payments for contracts which meet the definition of a lease and payments are based on the amount of energy expected to be generated.

Nevada Power has other types of commitments that arise primarily from unused lines of credit, letters of credit or relate to construction and other development costs (Liquidity and Capital Resources included within this Item 7 and Note 7) and AROs (Note 11), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information.


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COVID-19

In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by Nevada Power. While COVID-19 has impacted Nevada Power's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. In April 2020, the state of Nevada instituted a "stay-at-home" order requiring non-essential businesses, including casinos, to remain closed, which impacted Nevada Power's customers and, therefore, their needs and usage patterns for electricity as evidenced by a reduction in weather-normalized consumption due to COVID-19 through December 2020 compared to the same period in 2019. The state of Nevada has since moved to a long-term recovery plan with most businesses, including casinos, opening subject to capacity and other operating limitations that will be revised as the state and counties meet certain metrics. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity may continue to occur, particularly in the commercial and industrial classes as well as distribution only service customers. Due to regulatory requirements and voluntary actions taken by Nevada Power related to customer collection activity and suspension of disconnections for non-payment, Nevada Power has seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. The PUCN has approved the deferral of certain costs incurred in responding to COVID-19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion.

Nevada Power's business has been deemed essential and its employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain its electric generation, transmission and distribution system. In response to the effects of COVID-19, Nevada Power has implemented its business continuity plan to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID-19.

Regulatory Matters

Nevada Power is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further information regarding Nevada Power's general regulatory framework and current regulatory matters.

Environmental Laws and Regulations

Nevada Power is subject to federal, state and local laws and regulations regarding climate change, RPS, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state and local agencies. Nevada Power believes it is in material compliance with all applicable laws and regulations, although many are subject to interpretation that may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and Nevada Power is unable to predict the impact of the changing laws and regulations on its operations and financial results. Refer to "Liquidity and Capital Resources" for discussion of Nevada Power's forecasted environmental-related capital expenditures.

Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations.

Collateral and Contingent Features

Debt of Nevada Power is rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of Nevada Power's ability to, in general, meet the obligations of its issued debt. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.
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Nevada Power has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. Nevada Power's secured revolving credit facility does not require the maintenance of a minimum credit rating level in order to draw upon its availability. However, commitment fees and interest rates under the credit facility are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.

In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2020, the applicable credit ratings obtained from recognized credit rating agencies were investment grade. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2020, Nevada Power would not have been required to post additional collateral. Nevada Power's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors.

Inflation

Historically, overall inflation and changing prices in the economies where Nevada Power operates has not had a significant impact on Nevada Power's consolidated financial results. Nevada Power operates under a cost-of-service based rate structure administered by the PUCN and the FERC. Under this rate structure, Nevada Power is allowed to include prudent costs in its rates, including the impact of inflation after Nevada Power experiences cost increases. Fuel and purchase power costs are recovered through a balancing account, minimizing the impact of inflation related to these costs. Nevada Power attempts to minimize the potential impact of inflation on its operations through the use of periodic rate adjustments for fuel and energy costs, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by Nevada Power's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with Nevada Power's Summary of Significant Accounting Policies included in Nevada Power's Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

Nevada Power prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Nevada Power defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.


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Nevada Power continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Nevada Power's ability to recover its costs. Nevada Power believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as AOCI. Total regulatory assets were $0.8 billion and total regulatory liabilities were $1.2 billion as of December 31, 2020. Refer to Nevada Power's Note 6 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Nevada Power's regulatory assets and liabilities.

Impairment of Long-Lived Assets

Nevada Power evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.

The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what Nevada Power would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, load growth, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect Nevada Power's results of operations.

Income Taxes

In determining Nevada Power's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by Nevada Power's various regulatory commissions. Nevada Power's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Nevada Power recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Nevada Power's federal, state and local income tax examinations is uncertain, Nevada Power believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Nevada Power's consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Nevada Power's Note 9 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Nevada Power's income taxes.

It is probable that Nevada Power will pass income tax benefits and expense related to the federal tax rate change from 35% to 21%, certain property related basis differences and other various differences on to its customers. As of December 31, 2020, these amounts were recognized as a net regulatory liability of $647 million and will be included in regulated rates when the temporary differences reverse.

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Revenue Recognition - Unbilled Revenue

Revenue is recognized as electricity is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters. At the end of each month, energy provided to customers since their last billing is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $104 million as of December 31, 2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Estimates are reversed in the following month when actual revenue is recorded.

Item 7A.     Quantitative and Qualitative Disclosures About Market Risk

Nevada Power's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. Nevada Power's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which Nevada Power transacts. The following discussion addresses the significant market risks associated with Nevada Power's business activities. Nevada Power has established guidelines for credit risk management. Refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Nevada Power's contracts accounted for as derivatives.

Commodity Price Risk

Nevada Power is exposed to the impact of market fluctuations in commodity prices and interest rates. Nevada Power is principally exposed to electricity and natural gas market fluctuations primarily through Nevada Power's obligation to serve retail customer load in its regulated service territory. Nevada Power's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. The actual cost of fuel and purchased power is recoverable through the deferred energy mechanism. Interest rate risk exists on variable-rate debt and future debt issuances. Nevada Power does not engage in proprietary trading activities. To mitigate a portion of its commodity price risk, Nevada Power uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. Nevada Power does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. Nevada Power's exposure to commodity price risk is generally limited by its ability to include commodity costs in regulated rates through its deferred energy mechanism, which is subject to disallowance and regulatory lag that occurs between the time the costs are incurred and when the costs are included in regulated rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.

Interest Rate Risk

Nevada Power is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. Nevada Power manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, Nevada Power's fixed-rate long-term debt does not expose Nevada Power to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if Nevada Power were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of Nevada Power's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 7 and 8 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of Nevada Power's short- and long-term debt.

As of December 31, 2020 and 2019, Nevada Power had no short- and long-term variable-rate obligations that expose Nevada Power to the risk of increased interest expense in the event of increases in short-term interest rates.


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Credit Risk

Nevada Power is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Nevada Power's counterparties have similar economic, industry or other characteristics and due to direct and indirect relationships among the counterparties. Before entering into a transaction, Nevada Power analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, Nevada Power enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, Nevada Power exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.
As of December 31, 2020, Nevada Power's aggregate credit exposure from energy related transactions were not material, based on settlement and mark-to-market exposures, net of collateral.

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Item 8.        Financial Statements and Supplementary Data

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Board of Directors and Shareholder of
Nevada Power Company

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Nevada Power Company and subsidiaries ("Nevada Power") as of December 31, 2020 and 2019, the related consolidated statements of operations, changes in shareholder's equity, and cash flows, for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of Nevada Power as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of Nevada Power's management. Our responsibility is to express an opinion on Nevada Power's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to Nevada Power in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Nevada Power is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of Nevada Power's internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 6 to the financial statements

Critical Audit Matter Description

Nevada Power is subject to rate regulation by a state public service commission as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to the rates of electric and natural gas companies in the respective service territories where Nevada Power operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense, and income tax expense.
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Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow Nevada Power an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered in rates. While Nevada Power Company has indicated it expects to recover costs from customers through regulated rates, there is a risk that changes to the Commissions' approach to setting rates or other regulatory actions could limit Nevada Power's ability to recover its costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs and (2) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated Nevada Power's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected Nevada Power's filings with the Commissions and the filings with the Commissions by intervenors that may impact Nevada Power's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

/s/    Deloitte & Touche LLP

Las Vegas, Nevada
February 26, 2021

We have served as Nevada Power's auditor since 1987.

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NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions, except share data)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$25 $15 
Trade receivables, net234 215 
Inventories69 62 
Derivative contracts26 
Regulatory assets48 
Prepayments38 42 
Other current assets26 29 
Total current assets466 364 
Property, plant and equipment, net6,701 6,538 
Finance lease right of use assets, net351 441 
Regulatory assets746 800 
Other assets72 59 
Total assets$8,336 $8,202 
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:
Accounts payable$181 $194 
Accrued interest32 30 
Accrued property, income and other taxes25 25 
Current portion of long-term debt575 
Current portion of finance lease obligations27 24 
Regulatory liabilities50 93 
Customer deposits47 62 
Asset retirement obligation25 14 
Other current liabilities22 20 
Total current liabilities409 1,037 
Long-term debt2,496 1,776 
Finance lease obligations334 430 
Regulatory liabilities1,163 1,163 
Deferred income taxes738 714 
Other long-term liabilities257 285 
Total liabilities5,397 5,405 
Commitments and contingencies (Note 13)00
Shareholder's equity:
Common stock - $1.00 stated value, 1,000 shares authorized, issued and outstanding
Additional paid-in capital2,308 2,308 
Retained earnings634 493 
Accumulated other comprehensive loss, net(3)(4)
Total shareholder's equity2,939 2,797 
Total liabilities and shareholder's equity$8,336 $8,202 
The accompanying notes are an integral part of the consolidated financial statements.

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NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)
Years Ended December 31,
202020192018
Operating revenue$1,998 $2,148 $2,184 
Operating expenses:
Cost of fuel and energy816 943 917 
Operations and maintenance299 324 443 
Depreciation and amortization361 357 337 
Property and other taxes47 45 41 
Total operating expenses1,523 1,669 1,738 
Operating income475 479 446 
Other income (expense):
Interest expense(162)(171)(170)
Allowance for borrowed funds
Allowance for equity funds
Other, net19 21 17 
Total other income (expense)(133)(142)(148)
Income before income tax expense342 337 298 
Income tax expense47 73 72 
Net income$295 $264 $226 
The accompanying notes are an integral part of these consolidated financial statements.

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NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY
(Amounts in millions, except shares)
Accumulated
OtherOtherTotal
Common StockPaid-inRetainedComprehensiveShareholder's
SharesAmountCapitalEarningsLoss, NetEquity
Balance, December 31, 20171,000 $$2,308 $374 $(4)$2,678 
Net income— — — 226 — 226 
Balance, December 31, 20181,000 2,308 600 (4)2,904 
Net income— — — 264 — 264 
Dividends declared— — — (371)— (371)
Balance, December 31, 20191,000 2,308 493 (4)2,797 
Net income— — — 295 — 295 
Dividends declared— — — (155)— (155)
Other equity transactions— — — 
Balance, December 31, 20201,000 $$2,308 $634 $(3)$2,939 
The accompanying notes are an integral part of these consolidated financial statements.

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NEVADA POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)
Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$295 $264 $226 
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization361 357 337 
Allowance for equity funds(7)(5)(3)
Changes in regulatory assets and liabilities(42)27 83 
Deferred income taxes and amortization of investment tax credits(10)(32)(13)
Deferred energy(44)51 (11)
Amortization of deferred energy(41)43 16 
Other, net(5)14 
Changes in other operating assets and liabilities:
Trade receivables and other assets45 19 
Inventories(7)(1)
Accrued property, income and other taxes(13)(35)
Accounts payable and other liabilities(90)(6)
Net cash flows from operating activities467 701 619 
Cash flows from investing activities:
Capital expenditures(455)(409)(298)
Proceeds from sale of assets26 
Net cash flows from investing activities(429)(407)(297)
Cash flows from financing activities:
Proceeds from long-term debt718 495 573 
Repayments of long-term debt(575)(500)(824)
Dividends paid(155)(371)
Other, net(15)(14)(16)
Net cash flows from financing activities(27)(390)(267)
Net change in cash and cash equivalents and restricted cash and cash equivalents11 (96)55 
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period25 121 66 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$36 $25 $121 
The accompanying notes are an integral part of these consolidated financial statements.

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NEVADA POWER COMPANY AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)    Organization and Operations

Nevada Power Company and its subsidiaries, together with its subsidiaries ("Nevada Power"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Sierra Pacific Power Company ("Sierra Pacific") and certain other subsidiaries. Nevada Power is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers primarily in Las Vegas, North Las Vegas, Henderson and adjoining areas. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").

(2)    Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of Nevada Power and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the years ended December 31, 2020, 2019 and 2018.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

Nevada Power prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Nevada Power defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

Nevada Power continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Nevada Power's ability to recover its costs. Nevada Power believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").

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Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted amounts are included in other current assets and other assets on the Consolidated Balance Sheets.

Allowance for Credit Losses

Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for credit losses. The allowance for credit losses is based on Nevada Power's assessment of the collectability of amounts owed to Nevada Power by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, Nevada Power primarily utilizes credit loss history. However, Nevada Power may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. Nevada Power also has the ability to assess deposits on customers who have delayed payments or who are deemed to be a credit risk. The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):

202020192018
Beginning balance$15 $16 $16 
Charged to operating costs and expenses, net13 12 15 
Write-offs, net(9)(13)(15)
Ending balance$19 $15 $16 

Derivatives

Nevada Power employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price and interest rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements.

Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked‑to‑market and settled amounts are recognized as cost of fuel, energy and capacity on the Consolidated Statements of Operations.

For Nevada Power's derivative contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities. For a derivative contract not probable of inclusion in rates, changes in the fair value are recognized in earnings.

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Inventories

Inventories consist mainly of materials and supplies totaling $69 million and $62 million as of December 31, 2020 and 2019. The cost is determined using the average cost method. Materials are charged to inventory when purchased and are expensed or capitalized to construction work in process, as appropriate, when used.

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. Nevada Power capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. The cost of repairs and minor replacements are charged to expense when incurred with the exception of costs for generation plant maintenance under certain long-term service agreements. Costs under these agreements are expensed straight-line over the term of the agreements as approved by the Public Utilities Commission of Nevada ("PUCN").

Depreciation and amortization are generally computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by Nevada Power's various regulatory authorities. Depreciation studies are completed by Nevada Power to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as a non-current regulatory liability on the Consolidated Balance Sheets. As actual removal costs are incurred, the associated liability is reduced.

Generally when Nevada Power retires or sells a component of regulated property, plant and equipment depreciated using the composite method, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings with the exception of material gains or losses on regulated property, plant and equipment depreciated on a straight-line basis, which is then recorded to a regulatory asset or liability.

Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, are capitalized as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. The rate applied to construction costs is the lower of the PUCN allowed rate of return and rates computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC"). After construction is completed, Nevada Power is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets. Nevada Power's AFUDC rate used during 2020 and 2019 was 7.43% and 7.83%, respectively.

Asset Retirement Obligations

Nevada Power recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. Nevada Power's AROs are primarily associated with its generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability on the Consolidated Balance Sheets. The costs are not recovered in rates until the work has been completed.

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Impairment of Long-Lived Assets

Nevada Power evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.

Leases

    Lessee

Nevada Power has non-cancelable operating leases primarily for land, generating facilities, vehicles and office equipment and finance leases consisting primarily of transmission assets, generating facilities, office space and vehicles. These leases generally require Nevada Power to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. Nevada Power does not include options in its lease calculations unless there is a triggering event indicating Nevada Power is reasonably certain to exercise the option. Nevada Power's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Leases will be evaluated for impairment in line with Accounting Standards Codification ("ASC") Topic 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

Nevada Power's leases of generating facilities generally are for the long-term purchase of electric energy, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

Nevada Power's operating and right-of-use assets are recorded in other assets and the operating lease liabilities are recorded in current and long-term other liabilities accordingly.

Income Taxes

Berkshire Hathaway includes Nevada Power in its consolidated United States federal income tax return. Consistent with established regulatory practice, Nevada Power's provision for income taxes has been computed on a separate return basis.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using enacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of other comprehensive income ("OCI") are charged or credited directly to OCI. Changes in deferred income tax assets and liabilities that are associated with certain property‑related basis differences and other various differences that Nevada Power deems probable to be passed on to its customers are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties.


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In determining Nevada Power's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by Nevada Power's various regulatory commissions. Nevada Power's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Nevada Power recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Nevada Power's federal, state and local income tax examinations is uncertain, Nevada Power believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Nevada Power's consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

Revenue Recognition

Nevada Power uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which Nevada Power expects to be entitled in exchange for those goods or services. Nevada Power records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.

Substantially all of Nevada Power's Customer Revenue is derived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission and distribution and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. Other revenue consists primarily of amounts not considered Customer Revenue within ASC 606, "Revenue from Contracts with Customers" and revenue recognized in accordance with ASC 842, "Leases."

Revenue recognized is equal to what Nevada Power has the right to invoice as it corresponds directly with the value to the customer of Nevada Power's performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $104 million and $109 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued. In addition, Nevada Power has recognized contract assets of $8 million and $9 million as of December 31, 2020 and 2019, respectively, due to Nevada Power's performance on certain contracts.

Unamortized Debt Premiums, Discounts and Issuance Costs

Premiums, discounts and financing costs incurred for the issuance of long-term debt are amortized over the term of the related financing on a straight-line basis.

Segment Information

Nevada Power currently has 1 segment, which includes its regulated electric utility operations.

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(3)    Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20202019
Utility plant:
Generation30 - 55 years$3,690 $3,541 
Transmission45 - 70 years1,468 1,444 
Distribution20 - 65 years3,771 3,567 
General and intangible plant5 - 65 years791 741 
Utility plant9,720 9,293 
Accumulated depreciation and amortization(3,162)(2,951)
Utility plant, net6,558 6,342 
Other non-regulated, net of accumulated depreciation and amortization45 years
Plant, net6,559 6,343 
Construction work-in-progress142 195 
Property, plant and equipment, net$6,701 $6,538 

Almost all of Nevada Power's plant is subject to the ratemaking jurisdiction of the PUCN and the FERC. Nevada Power's depreciation and amortization expense, as authorized by the PUCN, stated as a percentage of the depreciable property balances as of December 31, 2020, 2019 and 2018 was 3.1%, 3.3%, and 3.2%, respectively. Nevada Power is required to file a utility plant depreciation study every six years as a companion filing with the triennial general rate review filings. The most recent study was filed in 2017.

Construction work-in-progress is primarily related to the construction of regulated assets.

(4)    Jointly Owned Utility Facilities

Under joint facility ownership agreements, Nevada Power, as tenants in common, has undivided interests in jointly owned generation and transmission facilities. Nevada Power accounts for its proportionate share of each facility and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include Nevada Power's share of the expenses of these facilities.

The amounts shown in the table below represent Nevada Power's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2020 (dollars in millions):
NevadaConstruction
Power'sUtilityAccumulatedWork-in-
SharePlantDepreciationProgress
Navajo Generating Station(1)
11 %$10 $$
ON Line Transmission Line19 125 20 
Other transmission facilitiesVarious66 29 
Total$201 $53 $

(1)Represents Nevada Power's proportionate share of capitalized asset retirement costs to retire the Navajo Generating Station, which was shut down in November 2019.

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(5)    Leases

The following table summarizes Nevada Power's leases recorded on the Consolidated Balance Sheet as of December 31 (in millions):
20202019
Right-of-use assets:
Operating leases$12 $13 
Finance leases351 441 
Total right-of-use assets$363 $454 
Lease liabilities:
Operating leases$15 $17 
Finance leases361 454 
Total lease liabilities$376 $471 

The following table summarizes Nevada Power's lease costs for the years ended December 31 (in millions):
20202019
Variable$434 $434 
Operating
Finance:
Amortization12 13 
Interest29 37 
Total lease costs$478 $487 
Weighted-average remaining lease term (years):
Operating leases6.57.5
Finance leases28.730.6
Weighted-average discount rate:
Operating leases4.5 %4.5 %
Finance leases8.6 %8.7 %

The following table summarizes Nevada Power's supplemental cash flow information relating to leases as of December 31 (in millions):
20202019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$(3)$(3)
Operating cash flows from finance leases(34)(37)
Financing cash flows from finance leases(15)(14)
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases$$
Finance leases

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Nevada Power has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$$56 $59 
202254 57 
202343 45 
202443 46 
202543 46 
Thereafter491 495 
Total undiscounted lease payments18 730 748 
Less - amounts representing interest(3)(369)(372)
Lease liabilities$15 $361 $376 

Operating and Finance Lease Obligations

Nevada Power's lease obligation primarily consists of a transmission line One Nevada Transmission Line ("ON Line"), which was placed in-service on December 31, 2013. Nevada Power and Sierra Pacific, collectively the ("Nevada Utilities"), entered into a long-term transmission use agreement, in which the Nevada Utilities have a 25% interest and Great Basin Transmission South, LLC has a 75% interest. The Nevada Utilities' share of the long-term transmission use agreement and ownership interest is split at 75% for Nevada Power and 25% for Sierra Pacific, previously split 95% for Nevada Power and 5% for Sierra Pacific. In December 2019, the PUCN ordered the Nevada Utilities to complete the necessary procedures to change the ownership split to 75% for Nevada Power and 25% for Sierra Pacific, effective January 1, 2020. In August 2020, the FERC approved the amended agreement between the Nevada Utilities and Great Basin Transmission, LLC that reallocated the PUCN-approved ownership percentage change from Nevada Power to Sierra Pacific. The term of the lease is 41 years with the agreement ending December 31, 2054. Total ON Line finance lease obligations of $295 million and $385 million were included on the Consolidated Balance Sheets as of December 31, 2020 and 2019, respectively. See Note 2 for further discussion of Nevada Power's other lease obligations.


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(6)    Regulatory Matters

Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future rates. Nevada Power's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Decommissioning costs(2)
3 years$230 $241 
Deferred operating costs9 years119 136 
Merger costs from 1999 merger24 years115 120 
Asset retirement obligations6 years70 67 
Employee benefit plans(1)
8 years50 87 
Legacy meters12 years45 49 
ON Line deferrals33 years43 45 
Deferred energy costs1 year39 
Abandoned projectsNone12 
OtherVarious83 44 
Total regulatory assets$794 $801 
Reflected as:
Current assets$48 $
Noncurrent assets746 800 
Total regulatory assets$794 $801 

(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.

(2)Amount includes regulatory assets with an indeterminate life of $11 million and $104 million as of December 31, 2020 and 2019, respectively.

Nevada Power had regulatory assets not earning a return on investment of $288 million and $303 million as of December 31, 2020 and 2019, respectively. The regulatory assets not earning a return on investment primarily consist of merger costs from the 1999 merger, AROs, deferred operating costs, a portion of the employee benefit plans, losses on reacquired debt and deferred energy costs.

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Regulatory Liabilities

Regulatory liabilities represent amounts that are expected to be returned to customers in future periods. Nevada Power's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Deferred income taxes(1)
Various$647 $681 
Cost of removal(2)
32 years340 332 
Impact fees(3)
2 years54 72 
OtherVarious172 171 
Total regulatory liabilities$1,213 $1,256 
Reflected as:
Current liabilities$50 $93 
Noncurrent liabilities1,163 1,163 
Total regulatory liabilities$1,213 $1,256 

(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing regulated property, plant and equipment in accordance with accepted regulatory practices.

(3)Amounts reduce rate base or otherwise accrue a carrying cost.

Deferred Energy

Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the PUCN. Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Consolidated Statements of Operations but rather is deferred and recorded as a regulatory asset on the Consolidated Balance Sheets and would be included in the table above as deferred energy costs. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs and is included in the table above as deferred energy costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel, energy and capacity in future time periods.

Regulatory Rate Review

In June 2020, Nevada Power filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue reduction of $96 million but requested an annual revenue reduction of $120 million. In September 2020, Nevada Power filed an all-party settlement for the electric regulatory rate review. The settlement resolved all but one issue and provided for an annual revenue reduction of $93 million and required Nevada Power to issue a $120 million one-time bill credit, composed primarily of existing regulatory liabilities, to customers beginning in October 2020. The continuation of the earning sharing mechanism was the one issue that was not addressed in the settlement. In October 2020, the PUCN held a hearing on the continuation of the earning sharing mechanism and issued an interim order accepting the settlement and requiring the one-time bill credit be issued to customers. The $120 million one-time bill credit was issued to customers in the fourth quarter of 2020. In December 2020, the PUCN issued a final order directing Nevada Power to continue the earning sharing mechanism subject to any modifications made to the earning sharing mechanism pursuant to an alternative rate-making ruling and to use the weather normalization methodology adopted for Sierra Pacific in its 2019 regulatory rate review. The new rates were effective on January 1, 2021.

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Natural Disaster Protection Plan

In May 2019, Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law, which requires Nevada Power to submit a natural disaster protection plan to the PUCN. The PUCN adopted natural disaster protection plan regulations in January 2020, that required Nevada Power to file their natural disaster protection plan for approval on or before March 1 of every third year. The regulations also require annual updates to be filed on or before September 1 of the second and third years of the plan. The plan must include procedures, protocols and other certain information as it relates to the efforts of Nevada Power to prevent or respond to a fire or other natural disaster. The expenditures incurred by Nevada Power in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with Nevada Power filing an application for recovery on or before March 1 of each year. Nevada Power submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, a modified final order was issued after Nevada Power and the Bureau of Consumer Protection filed for reconsideration. Intervenors have filed a petition for judicial review with the District Court in November 2020. In December 2020, the PUCN issued a second modified final order approving the natural disaster protection plan, as modified, and reopened its investigation and rulemaking on SB 329 to address rate design issues raised by intervenors. The comment period for the reopened investigation and rulemaking ended in early February 2021 and the matter is ongoing.

2017 Tax Reform

In February 2018, Nevada Power made filings with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by Nevada Power. The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing Nevada Power to record the amortization of any excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 1, 2018. Subsequently, Nevada Power filed a petition for reconsideration relating to the amortization of protected excess accumulated deferred income tax balances resulting from the 2017 Tax Reform. In November 2018, the PUCN issued an order granting reconsideration and reaffirming the September 2018 order. In December 2018, Nevada Power filed a petition for judicial review with the district court. The district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, Nevada Power filed a notice of appeal to the Nevada Supreme Court of the district court's order. Nevada Power agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review settlement. In December 2020, the PUCN issued a final order accepting the settlement. In January 2021, Nevada Power filed their withdrawal and the matter was dismissed by the court.

Energy Efficiency Program Rates ("EEPR") and Energy Efficiency Implementation Rates ("EEIR")

EEPR was established to allow Nevada Power to recover the costs of implementing energy efficiency programs and EEIR was established to offset the negative impacts on revenue associated with the successful implementation of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared by Nevada Power and approved by the PUCN in integrated resource plan proceedings. When Nevada Power's regulatory earned rate of return for a calendar year exceeds the regulatory rate of return used to set base tariff general rates, it is obligated to refund energy efficiency implementation revenue previously collected for that year. In February 2020, Nevada Power filed an application to reset the EEIR and EEPR and to refund the EEIR revenue received in 2019, including carrying charges. In August 2020, the PUCN issued an order accepting a stipulation requiring Nevada Power to refund the 2019 revenue and reset the rates as filed effective October 1, 2020. The EEIR liability for Nevada Power is $8 million, which is included in current regulatory liabilities on the Consolidated Balance Sheets as of December 31, 2020 and 2019.

Emissions Reduction and Capacity Retirement Plan ("ERCR Plan")

In November 2019, the Navajo coal-fueled generating facility was retired. Nevada Power owned 11% of the facility and its net owned capacity was 255 MWs. The decommissioning was approved by the PUCN in May 2014 as a part of the filed ERCR Plan. The remaining net book value of $12 million was moved from property, plant and equipment, net to noncurrent regulatory assets on the Consolidated Balance Sheet in November 2019, in compliance with the ERCR Plan. Refer to Note 13 for additional information on the ERCR Plan.

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(7)Short-term Debt and Credit Facilities

Nevada Power has a $400 million secured credit facility expiring in June 2022. The credit facility, which is for general corporate purposes and provide for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Nevada Power's option, plus a spread that varies based on Nevada Power's credit ratings for its senior secured long‑term debt securities. As of December 31, 2020 and 2019, Nevada Power had 0 borrowings outstanding under the credit facility. Amounts due under Nevada Power's credit facility are collateralized by Nevada Power's general and refunding mortgage bonds. The credit facility requires Nevada Power's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.

(8)    Long-term Debt

Nevada Power's long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
General and refunding mortgage securities:
2.750% Series BB, due 2020$$$575 
3.700% Series CC, due 2029500 496 496 
2.400% Series DD, due 2030425 422 
6.650% Series N, due 2036367 359 358 
6.750% Series R, due 2037349 346 346 
5.375% Series X, due 2040250 248 248 
5.450% Series Y, due 2041250 237 237 
3.125% Series EE, due 2050300 297 
Tax-exempt refunding revenue bond obligations:
Fixed-rate series:
1.875% Pollution Control Bonds Series 2017A, due 2032(1)
40 39 39 
1.650% Pollution Control Bonds Series 2017, due 2036(1)
40 39 39 
1.650% Pollution Control Bonds Series 2017B, due 2039(1)
13 13 13 
Total long-term debt$2,534 $2,496 $2,351 
Reflected as:
Current portion of long-term debt$$575 
Long-term debt2,496 1,776 
Total long-term debt$2,496 $2,351 

(1)Bonds were purchased by Nevada Power in May 2020 and re-offered at a fixed interest rate. Subject to mandatory purchase by Nevada Power in March 2023 at which date the interest rate may be adjusted.

Annual Payment on Long-Term Debt

The annual repayments of long-term debt for the years beginning January 1, 2021 and thereafter, are as follows (in millions):
2026 and thereafter$2,534 
Unamortized premium, discount and debt issuance cost(38)
Total$2,496 

The issuance of General and Refunding Mortgage Securities by Nevada Power is subject to PUCN approval and is limited by available property and other provisions of the mortgage indentures. As of December 31, 2020, approximately $9.1 billion (based on original cost) of Nevada Power's property was subject to the liens of the mortgages.

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(9)    Income Taxes

Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
202020192018
Current – Federal$57 $105 $84 
Deferred – Federal(10)(31)(13)
Uncertain tax positions
Investment tax credits(1)(1)
Total income tax expense$47 $73 $72 

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
 202020192018
Federal statutory income tax rate21 %21 %21 %
Effects of ratemaking(8)
Non-deductible expenses
Other
Effective income tax rate14 %22 %24 %

The net deferred income tax liability consists of the following as of December 31 (in millions):
 20202019
Deferred income tax assets:  
Regulatory liabilities$206 $211 
Operating and finance leases79 99 
Employee benefits14 
Customer advances19 19 
Other15 
Total deferred income tax assets327 352 
Deferred income tax liabilities:
Property related items(800)(797)
Regulatory assets(176)(166)
Operating and finance leases(76)(95)
Other(13)(8)
Total deferred income tax liabilities(1,065)(1,066)
Net deferred income tax liability$(738)$(714)

The United States Internal Revenue Service has closed its examination of NV Energy's consolidated income tax returns through December 31, 2008, and effectively settled its examination of Nevada Power's income tax return for the short year ended December 31, 2013, and the statute of limitations has expired for NV Energy's consolidated income tax returns through the short year ended December 19, 2013. The closure or effective settlement of examinations, or the expiration of the statute of limitations may not preclude the Internal Revenue Service from adjusting the federal net operating loss carryforward utilized in a year for which the examination is not closed.

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(10)    Employee Benefit Plans

Nevada Power is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Nevada Power. Nevada Power did 0t make any contributions to the Qualified Pension Plan for the years ended December 31, 2020 and 2019. Nevada Power contributed $19 million to the Qualified Pension Plan for the year ended December 31, 2018. Nevada Power contributed $1 million to the Non-Qualified Pension Plans for the years ended December 31, 2020, 2019 and 2018. Nevada Power did 0t make any contributions to the Other Postretirement Plans for the years ended December 31, 2020, 2019 and 2018. Amounts attributable to Nevada Power were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net.

Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following as of December 31 (in millions):
20202019
Qualified Pension Plan:
Other non-current assets$$
Other long-term liabilities(18)
Non-Qualified Pension Plans:
Other current liabilities(1)(1)
Other long-term liabilities(9)(9)
Other Postretirement Plans:
Other non-current assets
Other long-term liabilities(2)

(11)    Asset Retirement Obligations

Nevada Power estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.

Nevada Power does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain generation, transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Consolidated Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. These accruals totaled $340 million and $332 million as of December 31, 2020 and 2019, respectively.

The following table presents Nevada Power's ARO liabilities by asset type as of December 31 (in millions):
20202019
Waste water remediation$36 $37 
Evaporative ponds and dry ash landfills13 12 
Solar
Other20 23 
Total asset retirement obligations$72 $74 

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The following table reconciles the beginning and ending balances of Nevada Power's ARO liabilities for the years ended December 31 (in millions):
20202019
Beginning balance$74 $83 
Change in estimated costs
Retirements(14)(19)
Accretion
Ending balance$72 $74 
Reflected as:
Other current liabilities$25 $14 
Other long-term liabilities47 60 
$72 $74 

In 2008, Nevada Power signed an administrative order of consent as owner and operator of Reid Gardner Generating Station Unit Nos. 1, 2 and 3 and as co-owner and operating agent of Unit No. 4. Based on the administrative order of consent, Nevada Power recorded estimated AROs and capital remediation costs. However, actual costs of work under the administrative order of consent may vary significantly once the scope of work is defined and additional site characterization has been completed. In connection with the termination of the co-ownership arrangement, effective October 22, 2013, between Nevada Power and California Department of Water Resources ("CDWR") for the Reid Gardner Generating Station Unit No. 4, Nevada Power and CDWR entered into a cost-sharing agreement that sets forth how the parties will jointly share in costs associated with all investigation, characterization and, if necessary, remedial activities as required under the administrative order of consent.

Certain of Nevada Power's decommissioning and reclamation obligations relate to jointly-owned facilities, and as such, Nevada Power is committed to pay a proportionate share of the decommissioning or reclamation costs. In the event of a default by any of the other joint participants, the respective subsidiary may be obligated to absorb, directly or by paying additional sums to the entity, a proportionate share of the defaulting party's liability. Management has identified legal obligations to retire generation plant assets specified in land leases for Nevada Power's jointly-owned Navajo Generating Station, retired in November 2019, and the Higgins Generating Station. Provisions of the lease require the lessees to remove the facilities upon request of the lessors at the expiration of the leases. Nevada Power's estimated share of the decommissioning and reclamation obligations are primarily recorded as ARO liabilities in other long-term liabilities on the Consolidated Balance Sheets.

(12)    Fair Value Measurements

The carrying value of Nevada Power's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Nevada Power has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:

Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Nevada Power has the ability to access at the measurement date.
Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).
Level 3 - Unobservable inputs reflect Nevada Power's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Nevada Power develops these inputs based on the best information available, including its own data.

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The following table presents Nevada Power's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):
Input Levels for Fair Value Measurements
Level 1Level 2Level 3Total
As of December 31, 2020:
Assets:
Commodity derivatives$$$26 $26 
Money market mutual funds(1)
21 21 
Investment funds
$23 $$26 $49 
Liabilities - commodity derivatives$$$(11)$(11)
As of December 31, 2019:
Assets:
Money market mutual funds(1)
10 10 
Investment funds
$12 $$$12 
Liabilities - commodity derivatives$$$(8)$(8)

(1)Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Nevada Power transacts. When quoted prices for identical contracts are not available, Nevada Power uses forward price curves. Forward price curves represent Nevada Power's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Nevada Power bases its forward price curves upon internally developed models, with internal and external fundamental data inputs. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to markets that are not active. Given that limited market data exists for these contracts, Nevada Power uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The model incorporates a mid-market pricing convention (the mid‑point price between bid and ask prices) as a practical expedient for valuing its assets and liabilities measured and reported at fair value. The determination of the fair value for derivative contracts not only includes counterparty risk, but also the impact of Nevada Power's nonperformance risk on its liabilities, which as of December 31, 2020, had an immaterial impact to the fair value of its derivative contracts. As such, Nevada Power considers its derivative contracts to be valued using Level 3 inputs.

Nevada Power's investments in money market mutual funds and equity securities are accounted for as available-for-sale securities and are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value.

The following table reconciles the beginning and ending balances of Nevada Power's net commodity derivative assets or liabilities measured at fair value on a recurring basis using significant Level 3 inputs for the years ended December 31 (in millions):
202020192018
Beginning balance$(8)$$(3)
Changes in fair value recognized in regulatory assets or liabilities(17)(21)
Settlements40 10 
Ending balance$15 $(8)$

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Nevada Power's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Nevada Power's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Nevada Power's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Nevada Power's long-term debt as of December 31 (in millions):
20202019
CarryingFairCarryingFair
ValueValueValueValue
Long-term debt$2,496 $3,245 $2,351 $2,848 

(13)    Commitments and Contingencies

Environmental Laws and Regulations

Nevada Power is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. Nevada Power believes it is in material compliance with all applicable laws and regulations.

Senate Bill 123

In June 2013, the Nevada State Legislature passed Senate Bill 123 ("SB 123"), which included the retirement of coal plants and replacing the capacity with renewable facilities and other generating facilities. In May 2014, Nevada Power filed its ERCR Plan in compliance with SB 123. In July 2015, Nevada Power filed an amendment to its ERCR Plan with the PUCN which was approved in September 2015. In June 2015, the Nevada State Legislature passed Assembly Bill No. 498, which modified the capacity replacement components of SB 123.

In compliance with Senate Bill No. 123, Nevada Power retired 255 MWs of coal-fueled generation in 2019 in addition to the 557 MWs of coal-fueled generation retired in 2017.Consistent with the Emissions Reduction and Capacity Replacement Plan ("ERCR Plan"), between 2014 and 2016, Nevada Power acquired 536 MWs of natural gas generating resources, executed long-term power purchase agreements for 200 MWs of nameplate renewable energy capacity and constructed a 15-MW solar photovoltaic facility. Nevada Power has the option to acquire 35 MWs of nameplate renewable energy capacity in the future under the ERCR Plan, subject to PUCN approval.

Legal Matters

Nevada Power is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Nevada Power does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Nevada Power is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts.

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Commitments

Nevada Power has the following firm commitments that are not reflected on the Consolidated Balance Sheet. Minimum payments as of December 31, 2020 are as follows (in millions):
202120222023202420252026 and ThereafterTotal
Contract type:
Fuel, capacity and transmission contract commitments$570 $409 $328 $328 $331 $3,197 $5,163 
Fuel and capacity contract commitments (not commercially operable)35 74 197 229 4,965 5,500 
Construction commitments72 85 146 303 
Easements43 61 
Maintenance, service and other contracts48 44 32 23 12 165 
Total commitments$694 $578 $585 $550 $574 $8,211 $11,192 

    Fuel and Capacity Contract Commitments

        Purchased Power

Nevada Power has several contracts for long-term purchase of electric energy which have been approved by the PUCN. The expiration of these contracts range from 2026 to 2067. Purchased power includes estimated payments for contracts which meet the definition of a lease and payments are based on the amount of energy expected to be generated. See Note 5 for further discussion of Nevada Power's lease commitments.

        Natural Gas

Nevada Power's gas transportation contracts expire from 2022 to 2032 and the gas supply contracts expires from 2021 to 2022.

    Fuel and Capacity Contract Commitments - Not Commercially Operable

Nevada Power has several contracts for long-term purchase of electric energy in which the facility remains under development. Amounts represent the estimated payments under renewable energy power purchase contracts, which have been approved by the PUCN and are contingent upon the developers obtaining commercial operation and their ability to deliver power.

    Construction Commitments

Nevada Power's construction commitments included in the table above relate to firm commitments and include costs associated with the planned Dry Lake generating facility, a 150 MW solar photovoltaic facility with an additional 100 MW capacity of co-located battery storage that will be developed in Clark County, Nevada and certain other generating plant projects.

    Easements

Nevada Power has non-cancelable easements for land. Operations and maintenance expense on non-cancelable easements totaled $4 million, $7 million and $4 million for the years ended December 31, 2020, 2019 and 2018, respectively.

    Maintenance, Service and Other Contracts

Nevada Power has long-term service agreements for the performance of maintenance on generation units. Obligation amounts are based on estimated usage. The estimated expiration of these service agreements range from 2022 to 2027.

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(14)    Revenues from Contracts with Customers

The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by customer class for the years ended December 31 (in millions):
202020192018
Customer Revenue:
Retail:
Residential$1,145 $1,141 $1,195 
Commercial384 441 433 
Industrial345 433 425 
Other12 20 24 
Total fully bundled1,886 2,035 2,077 
Distribution only service24 31 30 
Total retail1,910 2,066 2,107 
Wholesale, transmission and other62 57 53 
Total Customer Revenue1,972 2,123 2,160 
Other revenue26 25 24 
Total revenue$1,998 $2,148 $2,184 

(15)    Supplemental Cash Flow Disclosures

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, consist of funds restricted by the PUCN for a certain renewable energy contract. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of
December 31,December 31,
20202019
Cash and cash equivalents$25 $15 
Restricted cash and cash equivalents included in other current assets11 10 
Total cash and cash equivalents and restricted cash and cash equivalents$36 $25 

The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202020192018
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$115 $126 $166 
Income taxes paid$50 $113 $117 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$32 $49 $34 

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(16)    Related Party Transactions

Nevada Power has an intercompany administrative services agreement with BHE and its subsidiaries. Amounts charged to Nevada Power under this agreement totaled $2 million for the years ended December 31, 2020, 2019 and 2018.

Kern River Gas Transmission Company, an indirect subsidiary of BHE, provided natural gas transportation and other services to Nevada Power of $52 million, $52 million and $58 million for the years ended December 31, 2020, 2019 and 2018. As of December 31, 2020 and 2019, Nevada Power's Consolidated Balance Sheets included amounts due to Kern River Gas Transmission Company of $4 million.

Nevada Power provided electricity and other services to PacifiCorp, an indirect subsidiary of BHE, of $3 million, $2 million and $3 million for the years ended December 31, 2020, 2019 and 2018, respectively. Receivables associated with these services were $— million as of December 31, 2020 and 2019. PacifiCorp provided electricity and the sale of renewable energy credits to Nevada Power of $1 million for the year ended December 31, 2020 and $— million for the years ended December 31, 2019 and 2018. Payables associated with these transactions were $— million as of December 31, 2020 and 2019.

Nevada Power provided electricity to Sierra Pacific of $106 million, $84 million and $91 million for the years ended December 31, 2020, 2019 and 2018, respectively. Receivables associated with these transactions were $13 million and $5 million as of December 31, 2020 and 2019, respectively. Nevada Power purchased electricity from Sierra Pacific of $34 million, $25 million and $28 million for the years ended December 31, 2020, 2019 and 2018, respectively. Payables associated with these transactions were $1 million as of December 31, 2020 and 2019.

Nevada Power incurs intercompany administrative and shared facility costs with NV Energy and Sierra Pacific. These transactions are governed by an intercompany service agreement and are priced at cost. Nevada Power provided services to NV Energy of $— million, $— million and $1 million for each of the years ending December 31, 2020, 2019 and 2018, respectively. NV Energy provided services to Nevada Power of $9 million, $9 million and $7 million for the years ending December 31, 2020, 2019 and 2018, respectively. Nevada Power provided services to Sierra Pacific of $26 million, $26 million and $28 million for the years ended December 31, 2020, 2019 and 2018, respectively. Sierra Pacific provided services to Nevada Power of $15 million, $14 million and $15 million for the years ended December 31, 2020, 2019 and 2018, respectively. As of December 31, 2020 and 2019, Nevada Power's Consolidated Balance Sheets included amounts due to NV Energy of $28 million and $26 million, respectively. There were 0 receivables due from NV Energy as of December 31, 2020 and 2019. As of December 31, 2020 and 2019, Nevada Power's Consolidated Balance Sheets included receivables due from Sierra Pacific of $2 million and $3 million, respectively. There were 0 payables due to Sierra Pacific as of December 31, 2020 and 2019.

Nevada Power is party to a tax-sharing agreement with NV Energy and NV Energy is part of the Berkshire Hathaway consolidated United States federal income tax return. As of December 31, 2020 and 2019 federal income taxes receivable from NV Energy were $— million and $7 million, respectively Nevada Power made cash payments of $50 million, $113 million and $117 million for federal income taxes for the years ended December 31, 2020, 2019 and 2018, respectively.

Certain disbursements for accounts payable and payroll are made by NV Energy on behalf of Nevada Power and reimbursed automatically when settled by the bank. These amounts are recorded as accounts payable at the time of disbursement.
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Sierra Pacific Power Company
Financial Section

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Item 6.        Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.        Management's Discussion and Analysis of Financial Condition and Results of Operations 

The following is management's discussion and analysis of certain significant factors that have affected the financial condition and results of operations of Sierra Pacific during the periods included herein. Explanations include management's best estimate of the impact of weather, customer growth, usage trends and other factors. This discussion should be read in conjunction with Sierra Pacific's historical Financial Statements and Notes to Financial Statements in Item 8 of this Form 10‑K. Sierra Pacific's actual results in the future could differ significantly from the historical results.

Results of Operations

Overview

Net income for the year ended December 31, 2020 was $111 million, an increase of $8 million, or 8%, compared to 2019, primarily due to $13 million of lower income tax expense due to the recognition of amortization of excess deferred income taxes following regulatory approval effective January 1, 2020, $10 million of lower operations and maintenance expenses, primarily due to higher regulatory-directed credits, and $4 million of higher electric utility margin, partially offset by $16 million of higher depreciation and amortization, mainly due to higher plant in service, and $3 million of lower natural gas utility margin.
Net income for the year ended December 31, 2019 was $103 million, an increase of $11 million, or 12%, compared to 2018, primarily due to $18 million of lower operations and maintenance expense, mainly due to lower political activity expenses, $3 million of higher electric utility margin, mainly due to $6 million of higher transmission and wholesale revenues and $3 million of customer growth, partially offset by $6 million of lower average retail rates related to the tax rate reduction rider effective April 2018, and $3 million of higher natural gas utility margin, mainly due to higher customer volumes primarily from the impacts of weather. These increases are partially offset by $10 million of unfavorable other, net, mainly due to higher non-service pension expense, and $6 million of higher depreciation and amortization expense, primarily due to higher plant placed in service.

Non-GAAP Financial Measure

Management utilizes various key financial measures that are prepared in accordance with GAAP, as well as non-GAAP financial measures such as, electric utility margin and natural gas utility margin, to help evaluate results of operations. Electric utility margin is calculated as electric operating revenue less cost of fuel and energy while natural gas utility margin is calculated as natural gas operating revenue less cost of natural gas purchased for resale, which are captions presented on the Statements of Operations.

Sierra Pacific's cost of fuel and energy and cost of natural gas purchased for resale are generally recovered from its retail customers through regulatory recovery mechanisms and, as a result, changes in Sierra Pacific's expenses included in regulatory recovery mechanisms result in comparable changes to revenue. As such, management believes electric utility margin and natural gas utility margin more appropriately and concisely explains profitability rather than a discussion of revenue and cost of sales separately. Management believes the presentation of electric utility margin and natural gas utility margin provides meaningful and valuable insight into the information management considers important to running the business and a measure of comparability to others in the industry.

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Electric utility margin and natural gas utility margin are not measures calculated in accordance with GAAP and should be viewed as a supplement to, and not a substitute for, operating income, which is the most directly comparable financial measure prepared in accordance with GAAP. The following table provides a reconciliation of utility margin to operating income for the years ended December 31 (in millions):
20202019Change20192018Change
Electric utility margin:
Operating revenue$738 $770 $(32)(4)%$770 $752 $18 %
Cost of fuel and energy301 337 (36)(11)337 322 15 
Electric utility margin437 433 %433 430 %
Natural gas utility margin:
Operating revenue116 119 (3)(3)%119 103 16 16 %
Natural gas purchased for resale62 62 — — 62 49 13 27 
Natural gas utility margin54 57 (3)(5)%57 54 %
Utility margin491 490 — %490 484 %
Operations and maintenance162 172 (10)(6)%172 190 (18)(9)%
Depreciation and amortization141 125 16 13 125 119 
Property and other taxes23 22 22 23 (1)(4)
Operating income$165 $171 $(6)(4)%$171 $152 $19 13 %

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Electric Utility Margin

A comparison of key operating results related to electric utility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue$738 $770 $(32)(4)%$770 $752 $18 %
Cost of fuel and energy301 337 (36)(11)337 322 15 
Utility margin$437 $433 $%$433 $430 $%
Sales (GWhs):
Residential2,672 2,491 181 %2,491 2,483 — %
Commercial2,977 2,973 — 2,973 2,998 (25)(1)
Industrial3,544 3,716 (172)(5)3,716 3,387 329 10 
Other15 16 (1)(6)16 16 — — 
Total fully bundled(1)
9,208 9,196 12 — 9,196 8,884 312 
Distribution only service1,670 1,629 41 1,629 1,516 113 
Total retail10,878 10,825 53 — 10,825 10,400 425 
Wholesale548 662 (114)(17)662 558 104 19 
Total GWhs sold11,426 11,487 (61)(1)%11,487 10,958 529 %
Average number of retail customers (in thousands)359 352 %352 347 %
Average revenue per MWh:
Retail - fully bundled(1)
$73.89 $76.72 $(2.83)(4)%$76.72 $78.32 $(1.60)(2)%
Wholesale$52.52 $48.54 $3.98 %$48.54 $50.11 $(1.57)(3)%
Heating degree days4,477 4,728 (251)(5)%4,728 4,450 278 %
Cooling degree days1,176 1,107 69 %1,107 1,290 (183)(14)%
Sources of energy (GWhs)(2)(3):
Natural gas5,219 4,891 328 %4,891 4,681 210 %
Coal855 1,205 (350)(29)1,205 834 371 44 
Renewables(4)
37 37 — — 37 35 
Total energy generated6,111 6,133 (22)— 6,133 5,550 583 11 
Energy purchased4,753 4,466 287 4,466 4,229 237 
Total10,864 10,599 265 %10,599 9,779 820 %
Average total cost of energy per MWh(5)
$27.71 $31.81 $(4.10)(13)%$31.81 $32.96 $(1.15)(3)%

(1)    Fully bundled includes sales to customers for combined energy, transmission and distribution services.
(2)    The average total cost of energy per MWh and sources of energy excludes 10, - and 54 GWhs of coal and 31, - and 183 GWhs of natural gas generated energy that is purchased at cost by related parties for the years ended December 31, 2020, 2019 and 2018, respectively.
(3)    GWh amounts are net of energy used by the related generating facilities.
(4)    Includes the Fort Churchill Solar Array which is under lease by Sierra Pacific.
(5)    The average total cost of energy per MWh includes only the cost of fuel associated with the generating facilities, purchased power and deferrals.
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Natural Gas Utility Margin

A comparison of key operating results related to natural gas utility margin is as follows for the years ended December 31:
20202019Change20192018Change
Utility margin (in millions):
Operating revenue$116 $119 $(3)(3)%$119 $103 $16 16 %
Natural gas purchased for resale62 62 — — 62 49 13 27 
Natural gas utility margin$54 $57 $(3)(5)%$57 $54 $%
Sold (000's Dths):
Residential10,452 11,311 (859)(8)%11,311 10,102 1,209 12 %
Commercial5,148 5,783 (635)(11)5,783 5,128 655 13 
Industrial1,826 1,971 (145)(7)1,971 1,927 44 
Total retail17,426 19,065 (1,639)(9)%19,065 17,157 1,908 11 %
Average number of retail customers (in thousands)174 170 %170 167 %
Average revenue per retail Dth sold$6.66 $6.24 $0.42 %$6.24 $6.00 $0.24 %
Heating degree days4,477 4,728 (251)(5)%4,728 4,450 278 %
Average cost of natural gas per retail Dth sold$3.56 $3.25 $0.31 10 %$3.25 $2.86 $0.39 14 %

Year Ended December 31, 2020 Compared to Year Ended December 31, 2019

Electric utility margin increased $4 million, or 1%, for 2020 compared to 2019 primarily due to:
$4 million in higher residential customer volumes from the favorable impact of weather;
$3 million due to higher EEPRs (offset in operations and maintenance expense); and
$2 million of residential customer growth.
The increase in electric utility margin was offset by:
$4 million of lower transmission and wholesale revenue; and
$1 million of higher revenue reductions related to customer service agreements.

Natural gas utility margin decreased $3 million, or 5%, for 2020 compared to 2019 primarily due to lower customer volumes mainly from the unfavorable impacts of weather.

Operations and maintenance decreased $10 million, or 6%, for 2020 compared to 2019 primarily due to higher regulatory-directed credits relating to the deferral of costs for the ON Line lease to be collected from customers due to the regulatory-directed reallocation of costs between Nevada Power and Sierra Pacific (offset in depreciation and amortization and other income (expense)) of $9 million and lower plant operations and maintenance expenses, offset by lower regulatory-directed credits relating to the amortization of an excess reserve balance that ended in 2019 and higher energy efficiency program costs (offset in operating revenue).

Depreciation and amortization increased $16 million, or 13%, for 2020 compared to 2019 primarily due to higher plant placed in service and higher depreciation expense on the ON Line lease due to the regulatory-directed reallocation of costs between Nevada Power and Sierra Pacific (offset in operations and maintenance expense).

Other income (expense) is favorable $1 million, or 3%, for 2020 compared to 2019 primarily due to lower pension costs, partially offset by higher interest expense on the ON Line lease due to the regulatory-directed reallocation of costs between Nevada Power and Sierra Pacific (offset in operations and maintenance expense).

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Income tax expense decreased $13 million, or 46%, for 2020 compared to 2019. The effective tax rate was 12% in 2020 and 21% in 2019 and decreased due to the recognition of amortization of excess deferred income taxes following regulatory approval effective January 1, 2020.

Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

Electric utility margin increased $3 million, or 1%, for 2019 compared to 2018 primarily due to:
$6 million of higher transmission and wholesale revenues; and
$3 million of customer growth.
The increase in electric utility margin was offset by:
$6 million in lower retail rates due to the tax rate reduction rider effective April 2018.

Natural gas utility margin increased $3 million, or 6%, for 2019 compared to 2018 primarily due to higher customer volumes mainly from the impacts of weather.

Operations and maintenance decreased $18 million, or 9%, for 2019 compared to 2018 primarily due to lower political activity expenses and the impacts of adopting ASC 842 of $3 million, partially offset by higher generation plant costs of $3 million.
Depreciation and amortization increased $6 million, or 5%, for 2019 compared to 2018 primarily due to higher plant placed in service of $4 million and the impacts of adopting ASC 842 of $1 million.

Other income (expense) is unfavorable $10 million, or 33%, for 2019 compared to 2018 primarily due to higher non-service pension expense of $7 million and the impacts of adopting ASC 842 of $2 million.

Income tax expense decreased $2 million, or 7%, for 2019 compared to 2018. The effective tax rate was 21% in 2019 and 25% in 2018 and decreased due to lower nondeductible expenses.

Liquidity and Capital Resources

As of December 31, 2020, Sierra Pacific's total net liquidity was $224 million as follows (in millions):
Cash and cash equivalents$19 
Credit facilities(1)
250 
Less -
Short-term debt(45)
Net credit facilities205 
Total net liquidity$224 
Credit facilities:
Maturity dates2022

(1)Refer to Note 7 of Notes to Financial Statements in Item 8 of this Form 10-K for further discussion regarding Sierra Pacific's credit facility.
Operating Activities

Net cash flows from operating activities for the years ended December 31, 2020 and 2019 were $190 million and $237 million, respectively. The change was primarily due to lower collections from customers, higher inventory purchases, the timing of payments for operating costs and higher payments for fuel and energy costs, partially offset by lower payments for income taxes.

Net cash flows from operating activities for the years ended December 31, 2019 and 2018 were $237 million and $275 million, respectively. The change was primarily due to higher payments for income taxes, an increase in fuel costs, higher payments for operating costs and decreased collections of customer advances, partially offset by lower contributions to the pension plan.

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The timing of Sierra Pacific's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2020 and 2019 were $(246) million and $(247) million, respectively. The change was primarily due to decreased capital expenditures, partially offset by expenditures related to the regulatory-directed reallocation of ON Line assets between Nevada Power and Sierra Pacific. Refer to "Future Uses of Cash" for further discussion of capital expenditures.

Net cash flows from investing activities for the years ended December 31, 2019 and 2018 were $(247) million and $(205) million, respectively. The change was primarily due to increased capital expenditures. Refer to "Future Uses of Cash" for further discussion of capital expenditures.

Financing Activities

Net cash flows from financing activities for the years ended December 31, 2020 and 2019 were $50 million and $(34) million, respectively. The change was primarily due to lower payments to repurchase long-term debt, higher proceeds from short-term debt and lower dividends paid to NV Energy, Inc., partially offset by lower proceeds from the re-offering of previously repurchased long-term debt.

Net cash flows from financing activities for the years ended December 31, 2019 and 2018 were $(34) million and $(2) million, respectively. The change was due to higher payments to repurchase long-term debt and dividends paid to NV Energy, Inc. of $46 million, partially offset by higher proceeds from the re-offering of previously repurchased long-term debt.

Ability to Issue Debt

Sierra Pacific's ability to issue debt is primarily impacted by its financing authority from the PUCN. As of December 31, 2020, Sierra Pacific has financing authority from the PUCN consisting of the ability to issue long-term and short-term debt securities so long as the total amount of debt outstanding (excluding borrowings under Sierra Pacific's $250 million secured credit facility) does not exceed $1.6 billion as measured at the end of each calendar quarter. Sierra Pacific's revolving credit facility contains a financial maintenance covenant which Sierra Pacific was in compliance with as of December 31, 2020. In addition, certain financing agreements contain covenants which are currently suspended as Sierra Pacific's senior secured debt is rated investment grade. However, if Sierra Pacific's senior secured debt ratings fall below investment grade by either Moody's Investor Service or Standard & Poor's, Sierra Pacific would be subject to limitations under these covenants.

Ability to Issue General and Refunding Mortgage Securities

To the extent Sierra Pacific has the ability to issue debt under the most restrictive covenants in its financing agreements and has financing authority to do so from the PUCN, Sierra Pacific's ability to issue secured debt is limited by the amount of bondable property or retired bonds that can be used to issue debt under Sierra Pacific's indenture.


Sierra Pacific's indenture creates a lien on substantially all of Sierra Pacific's properties in Nevada. As of December 31, 2017, $3.92020, $4.3 billion of Sierra Pacific's assets were pledged. Sierra Pacific had the capacity to issue $1.2$1.5 billion of additional general and refunding mortgage securities as of December 31, 20172020 determined on the basis of 70% of net utility property additions. Property additions include plant-in-service and specific assets in construction work-in-progress. The amount of bond capacity listed above does not include eligible property in construction work-in-progress. Sierra Pacific also has the ability to release property from the lien of Sierra Pacific's indenture on the basis of net property additions, cash or retired bonds. To the extent Sierra Pacific releases property from the lien of Sierra Pacific's indenture, it will reduce the amount of securities issuable under the indenture.


Long-Term Debt

In September 2020, Sierra Pacific entered into a re-offering of $30 million of its Washoe County Water Facilities Refunding Revenue Bonds, Series 2016C, due 2036. The series was offered at a fixed rate of 0.625% for a two-year term subject to mandatory purchase by Sierra Pacific in April 2022 at which date the interest rate may be adjusted.


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In April 2020, Sierra Pacific entered into a re-offering of the following series of tax-exempt bonds that were held in treasury: $30 million of its Washoe County Water Facilities Refunding Revenue Bonds, Series 2016C, due 2036; $59 million of its Washoe County Gas Facilities Refunding Revenue Bonds, Series 2016A, due 2031; and $20 million of its Humboldt County Water Facilities Refunding Revenue Bonds, Series 2016A, due 2029. The interest rate mode of these bonds was changed to a variable rate from an annual fixed rate. Sierra Pacific holds the Washoe and Humboldt County Series 2016A bonds and they could be issued at a future date if deemed necessary.

Future Uses of Cash


Capital Expenditures


Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; load projections; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Prudently incurred expenditures for compliance-related items such as pollution-control technologies, replacement generation and associated operating costs are generally incorporated into Sierra Pacific's regulated retail rates. Expenditures for certain assets may ultimately include acquisition of existing assets.


Historical and forecasted capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ending December 31 are as follows (in millions):
HistoricalForecast
201820192020202120222023
Electric distribution145 156 128 180 182 147 
Electric transmission17 60 73 105 102 
Other51 72 58 71 71 65 
Total$201 $245 $246 $324 $358 $314 
 Historical Forecasted
 2015 2016 2017 2018 2019 2020
            
Distribution$86
 $115
 $88
 $81
 $76
 64
Transmission system investment38
 12
 12
 11
 47
 15
Other128
 67
 86
 104
 101
 80
Total$252
 $194
 $186
 $196
 $224
 $159


Sierra Pacific's Fourth Amendment to the 2018 Joint IRP proposed an increase in electric transmission. Sierra Pacific has included estimates from its latest IRP filing in its forecast capital expenditures for 2021 through 2023. These estimates are likely to change as a result of the RFP process and some are still be pending PUCN approval. Sierra Pacific's historical and forecast capital expenditures include investments thatthe following:

Electric distribution includes both growth projects and operating expenditures consisting of routine expenditures for distribution needed to serve existing and expected demand.
Electric transmission includes both growth projects and operating expenditures. Growth projects primarily relate to operatingthe Nevada Utilities' Greenlink Nevada transmission expansion program. In this project, the company has proposed to build a 235-mile, 525 kV transmission line, known as Greenlink North, connecting the new Ft. Churchill substation to the Robinson Summit substation; a 46-mile, 345 kV transmission line from the new Ft. Churchill substation to the Mira Loma substations; and a 38-mile, 345 kV transmission line from the new Ft. Churchill substation to the Robinson Summit substations. These projects thatare subject to regulatory approvals. Operating expenditures consist of routine expenditures for transmission distribution, generation and other infrastructure needed to serve existing and expected demand.

Other investments include both growth projects and operating expenditures consisting of routine expenditures for generation, other operating projects and other infrastructure needed to serve existing and expected demand.

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Contractual Obligations


Sierra Pacific has contractual cash obligations that may affect its consolidated financial condition. The following table summarizes Sierra Pacific's material contractual cash obligations as of December 31, 20172020 (in millions):

Payments Due by Periods
Payments Due by Periods20212022 - 20232023 - 20242026 and ThereafterTotal
2018 2019 - 2020 2021 - 2022 2023 and Thereafter Total
Long-term debt$
 $
 $
 $1,121
 $1,121
Long-term debt$— $250 $— $917 $1,167 
Interest payments on long-term debt(1)
40
 81
 81
 351
 553
Interest payments on long-term debt(1)
41 82 66 263 452 
Capital leases, including interest(2)
3
 4
 2
 8
 17
ON Line financial lease, including interest(2)
2
 4
 5
 38
 49
Fuel and capacity contract commitments(1)
200
 269
 145
 515
 1,129
Fuel and capacity contract commitments (not commercially operable)(1)

 24
 44
 590
 658
Operating leases and easements(1)
4
 8
 5
 54
 71
Short-term debtShort-term debt45 — — — 45 
ON Line finance lease liabilityON Line finance lease liability79 99 
Interest payments on ON Line finance lease liability(1)
Interest payments on ON Line finance lease liability(1)
16 14 79 117 
Operating and finance lease liabilitiesOperating and finance lease liabilities26 46 
Interest payments on operating and finance lease liabilities(1)
Interest payments on operating and finance lease liabilities(1)
11 21 
Fuel and capacity contract commitments(1)(2)
Fuel and capacity contract commitments(1)(2)
327 284 191 940 1,742 
Fuel and capacity contract commitments (not commercially operable)(1)(2)
Fuel and capacity contract commitments (not commercially operable)(1)(2)
71 72 637 786 
Easements(1)
Easements(1)
30 40 
Asset retirement obligations
 
 
 14
 14
Asset retirement obligations— — 11 14 
Maintenance, service and other contracts(1)
6
 12
 12
 12
 42
Maintenance, service and other contracts(1)
— 20 
Total contractual cash obligations$255
 $402
 $294
 $2,703
 $3,654
Total contractual cash obligations$449 $735 $372 $2,993 $4,549 

(1)Not reflected on the Consolidated Balance Sheets.
(2)Interest is not reflected on the Consolidated Balance Sheets.



(1)Not reflected on the Balance Sheets.
(2)Purchased power includes estimated payments for contracts which meet the definition of a lease and payments are based on the amount of energy expected to be generated.

Sierra Pacific has other types of commitments that arise primarily from unused lines of credit, letters of credit or relate to construction and other development costs (Liquidity and Capital Resources included within this Item 7 and Note 6), uncertain tax positions7) and AROs (Note 9) and asset retirement obligations (Note 12)11), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10‑K for additional information.


COVID-19

In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and many of the customers served by Sierra Pacific. While COVID-19 has impacted Sierra Pacific's financial results and operations through December 31, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. In April 2020, the state of Nevada instituted a "stay-at-home" order requiring non-essential businesses, including casinos, to remain closed, which impacted Sierra Pacific's customers and, therefore, their needs and usage patterns for electricity and natural gas. The state of Nevada has since moved to a long-term recovery plan with most businesses, including casinos, opening subject to capacity and other operating limitations that will be revised as the state and counties meet certain metrics. As the impacts of COVID-19 and related customer and governmental responses remain uncertain, including the duration of restrictions on business openings, reductions in the consumption of electricity or natural gas may occur, particularly in the commercial and industrial classes as well as distribution only service customers. Due to regulatory requirements and voluntary actions taken by Sierra Pacific related to customer collection activity and suspension of disconnections for non-payment, Sierra Pacific has seen delays and reductions in cash receipts from retail customers related to the impacts of COVID-19, which could result in higher than normal bad debt write-offs. The amount of such reductions in cash receipts through December 2020 has not been material compared to the same period in 2019, but uncertainty remains. The PUCN has approved the deferral of certain costs incurred in responding to COVID-19. Refer to "Regulatory Matters" in Item 1 of this Form 10-K for further discussion.

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Sierra Pacific's business has been deemed essential and its employees have been identified as "critical infrastructure employees" allowing them to move within communities and across jurisdictional boundaries as necessary to maintain its electric generation, transmission and distribution system. In response to the effects of COVID-19, Sierra Pacific has implemented its business continuity plan to protect its employees and customers. Such plans include a variety of actions, including situational use of personal protective equipment by employees when interacting with customers and implementing practices to enhance social distancing at the workplace. Such practices have included work-from-home, staggered work schedules, rotational work location assignments, increased cleaning and sanitation of work spaces and providing general health reminders intended to help lower the risk of spreading COVID-19.

Regulatory Matters


Sierra Pacific is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further discussioninformation regarding Sierra Pacific's general regulatory framework and current regulatory matters.


Environmental Laws and Regulations


Sierra Pacific is subject to federal, state and local laws and regulations regarding climate change, RPS, air and water quality, RPS, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Sierra Pacific's current and future operations. In addition to imposing continuing compliance obligations, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state and local agencies. Sierra Pacific believes it is in material compliance with all applicable laws and regulations, although many are subject to interpretation that may ultimately be resolved by the courts. Environmental laws and regulations continue to evolve, and Sierra Pacific is unable to predict the impact of the changing laws and regulations on its operations and financial results. Refer to "Liquidity and Capital Resources" for discussion of Sierra Pacific's forecasted environmental-related capital expenditures.


Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for additional information regarding environmental laws and regulations and "Liquidity and Capital Resources" for Sierra Pacific's forecasted environmental-related capital expenditures.regulations.


Collateral and Contingent Features


Debt of Sierra Pacific is rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of Sierra Pacific's ability to, in general, meet the obligations of its issued debt. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.


Sierra Pacific has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments. Sierra Pacific's secured revolving credit facility does not require the maintenance of a minimum credit rating level in order to draw upon its availability. However, commitment fees and interest rates under the credit facility are tied to credit ratings and increase or decrease when the ratings change. A ratings downgrade could also increase the future cost of commercial paper, short- and long-term debt issuances or new credit facilities.


In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for unsecured debt as reported by one or more of the three recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of December 31, 2017,2020, the applicable credit ratings obtained from the three recognized credit rating agencies were investment grade. If all credit-risk-related contingent features or adequate assurance provisions for these agreements had been triggered as of December 31, 2017,2020, Sierra Pacific would have been required to post $15$10 million of additional collateral. Sierra Pacific's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors.



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Inflation


Historically, overall inflation and changing prices in the economies where Sierra Pacific operates has not had a significant impact on Sierra Pacific's consolidated financial results. Sierra Pacific operates under a cost-of-service based rate structure administered by the PUCN and the FERC. Under this rate structure, Sierra Pacific is allowed to include prudent costs in its rates, including the impact of inflation after Sierra Pacific experiences cost increases. Fuel and purchase power costs are recovered through a balancing account, minimizing the impact of inflation related to these costs. Sierra Pacific attempts to minimize the potential impact of inflation on its operations through the use of periodic rate adjustments for fuel and energy costs, by employing prudent risk management and hedging strategies and by considering, among other areas, its impact on purchases of energy, operating expenses, materials and equipment costs, contract negotiations, future capital spending programs and long-term debt issuances. There can be no assurance that such actions will be successful.


New Accounting Pronouncements

For a discussion of new accounting pronouncements affecting Sierra Pacific, refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Critical Accounting Estimates


Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by Sierra Pacific's methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with Sierra Pacific's Summary of Significant Accounting Policies included in Sierra Pacific's Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.


Accounting for the Effects of Certain Types of Regulation


Sierra Pacific prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Sierra Pacific defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.


Sierra Pacific continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Sierra Pacific's ability to recover its costs. Sierra Pacific believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss).AOCI. Total regulatory assets were $332$334 million and total regulatory liabilities were $500$497 million as of December 31, 2017.2020. Refer to Sierra Pacific's Note 56 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Sierra Pacific's regulatory assets and liabilities.


Impairment of Long-Lived Assets


Sierra Pacific evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2017,2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.




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The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what Sierra Pacific would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, load growth, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect Sierra Pacific's results of operations.


Income Taxes


In determining Sierra Pacific's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by Sierra Pacific's various regulatory jurisdictions.commissions. Sierra Pacific's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Sierra Pacific recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Sierra Pacific's federal, state and local income tax examinations is uncertain, Sierra Pacific believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Sierra Pacific's consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Sierra Pacific's Note 9 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Sierra Pacific's income taxes.


It is probable that Sierra Pacific is probable towill pass income tax benefits and expense related to the federal tax rate change from 35% to 21%, certain property-related basis differences and other various differences on to its customers. As of December 31, 2017,2020, these amounts were recognized as a net regulatory liability of $264$249 million and will be included in regulated rates when the temporary differences reverse.


Revenue Recognition - Unbilled Revenue


Revenue is recognized as electricity or natural gas is delivered or services are provided. The determination of customer billings is based on a systematic reading of meters. At the end of each month, energy provided to customers since their last billing is estimated, and the corresponding unbilled revenue is recorded. Unbilled revenue was $62$59 million as of December 31, 2017.2020. Factors that can impact the estimate of unbilled energy include, but are not limited to, seasonal weather patterns, total volumes supplied to the system, line losses, economic impacts and composition of sales among customer classes. Estimates are reversed in the following month when actual revenue is recorded.


Item 7A.    Quantitative and Qualitative Disclosures About Market Risk


Sierra Pacific's Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. Sierra Pacific's significant market risks are primarily associated with commodity prices, interest rates and the extension of credit to counterparties with which Sierra Pacific transacts. The following discussion addresses the significant market risks associated with Sierra Pacific's business activities. Sierra Pacific has established guidelines for credit risk management. Refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Sierra Pacific's contracts accounted for as derivatives.



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Commodity Price Risk


Sierra Pacific is exposed to the impact of market fluctuations in commodity prices and interest rates. Sierra Pacific is principally exposed to electricity, natural gas and coal market fluctuations primarily through Sierra Pacific's obligation to serve retail customer load in its regulated service territory. Sierra Pacific's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold, and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. The actual cost of fuel and purchased power is recoverable through the deferred energy mechanism. Interest rate risk exists on variable-rate debt and future debt issuances. Sierra Pacific does not engage in proprietary trading activities. To mitigate a portion of its commodity price risk, Sierra Pacific uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. Sierra Pacific does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices. Sierra Pacific's exposure to commodity price risk is generally limited by its ability to include commodity costs in regulated rates through its deferred energy mechanism, which is subject to disallowance and regulatory lag that occurs between the time the costs are incurred and when the costs are included in regulated rates, as well as the impact of any customer sharing resulting from cost adjustment mechanisms.


Interest Rate Risk


Sierra Pacific is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. Sierra Pacific manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, Sierra Pacific's fixed-rate long-term debt does not expose Sierra Pacific to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if Sierra Pacific were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of Sierra Pacific's short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 67 and 78 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of Sierra Pacific's short- and long-term debt.


As of December 31, 20172020 and 2016,2019, Sierra Pacific had short- and long-term variable-rate obligations totaling $80$45 million and $— million, respectively, that expose Sierra Pacific to the risk of increased interest expense in the event of increases in short-term interest rates. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on Sierra Pacific's consolidated annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 20172020 and 2016.2019.


Credit Risk


Sierra Pacific is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Sierra Pacific's counterparties have similar economic, industry or other characteristics and due to direct and indirect relationships among the counterparties. Before entering into a transaction, Sierra Pacific analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, Sierra Pacific enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, Sierra Pacific exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.


As of December 31, 2017,2020, Sierra Pacific's aggregate credit exposure from energy related transactions were not material, based on settlement and mark-to-market exposures, net of collateral.



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Item 8.        Financial Statements and Supplementary Data




381


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM




To the Shareholder and Board of Directors and Shareholder of
Sierra Pacific Power Company
Las Vegas, Nevada


Opinion on the Financial Statements


We have audited the accompanying consolidated balance sheets of Sierra Pacific Power Company and subsidiaries ("Sierra Pacific") as of December 31, 20172020 and 2016,2019, the related consolidated statements of operations, changes in shareholder's equity, and cash flows, for each of the three years in the period ended December 31, 2017,2020, and the related notes (collectively referred to as the “financial statements”"financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of Sierra Pacific as of December 31, 20172020 and 2016,2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2020, in conformity with accounting principles generally accepted in the United States of America.


Basis for Opinion
These financial statements are the responsibility of Sierra Pacific's management. Our responsibility is to express an opinion on Sierra Pacific’sPacific's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to Sierra Pacific in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Sierra Pacific is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of Sierra Pacific's internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
/s/Deloitte & Touche LLP

Critical Audit Matter
The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 2 and 6 to the financial statements

Critical Audit Matter Description

Sierra Pacific is subject to rate regulation by a state public service commission as well as the Federal Energy Regulatory Commission (collectively the "Commissions"), which have jurisdiction with respect to the rates of electric and natural gas companies in the respective service territories where Sierra Pacific operates. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economic effects of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment, net; regulatory assets and liabilities; deferred income taxes; operating revenue; operations and maintenance expense; depreciation and amortization expense, and income tax expense.

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Regulated rates are subject to regulatory rate-setting processes. Rates are determined, approved, and established based on a cost-of-service basis, which is designed to allow Sierra Pacific an opportunity to recover its prudently incurred costs of providing services and to earn a reasonable return on its invested capital. Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment, and the timing and amount of assets to be recovered in rates. While Sierra Pacific Power Company has indicated it expects to recover costs from customers through regulated rates, there is a risk that the changes to the Commissions' approach to setting rates or other regulatory actions could limit Sierra Pacific's ability to recover its costs.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs and (2) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:
We evaluated Sierra Pacific's disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions' treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory asset and liability balances for completeness.
For regulatory matters in process, we inspected Sierra Pacific's filings with the Commissions and the filings with the Commissions by intervenors that may impact Sierra Pacific's future rates, for any evidence that might contradict management's assertions.
We inquired of management about property, plant, and equipment that may be abandoned. We inquired of management to identify projects that are designed to replace assets that may be retired prior to the end of the useful life. We inspected minutes of the board of directors and regulatory orders and other filings with the Commissions to identify any evidence that may contradict management's assertion regarding probability of an abandonment.

/s/    Deloitte & Touche LLP

Las Vegas, Nevada
February 23, 201826, 2021

We have served as Sierra Pacific’sPacific's auditor since 1996.



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SIERRA PACIFIC POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions, except share data)

As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$19 $27 
Trade receivables, net97 109 
Income taxes receivable14 
Inventories77 57 
Regulatory assets67 12 
Other current assets38 20 
Total current assets305 239 
Property, plant and equipment, net3,164 3,075 
Regulatory assets267 283 
Other assets183 74 
Total assets$3,919 $3,671 
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:
Accounts payable$108 $103 
Accrued interest14 14 
Accrued property, income and other taxes14 12 
Short-term debt45 
Regulatory liabilities34 49 
Customer deposits15 21 
Other current liabilities25 21 
Total current liabilities255 220 
Long-term debt1,164 1,135 
Finance lease obligations121 40 
Regulatory liabilities463 489 
Deferred income taxes374 347 
Other long-term liabilities131 120 
Total liabilities2,508 2,351 
Commitments and contingencies (Note 13)00
Shareholder's equity:
Common stock - $3.75 stated value, 20,000,000 shares authorized and 1,000 issued and outstanding
Additional paid-in capital1,111 1,111 
Retained earnings301 210 
Accumulated other comprehensive loss, net(1)(1)
Total shareholder's equity1,411 1,320 
Total liabilities and shareholder's equity$3,919 $3,671 
The accompanying notes are an integral part of the financial statements.



384
 As of December 31,
 2017 2016
ASSETS
    
Current assets:   
Cash and cash equivalents$4
 $55
Accounts receivable, net112
 117
Inventories49
 45
Regulatory assets32
 25
Other current assets17
 13
Total current assets214
 255
    
Property, plant and equipment, net2,892
 2,822
Regulatory assets300
 410
Other assets7
 6
    
Total assets$3,413
 $3,493
    
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:   
Accounts payable$92
 $146
Accrued interest14
 14
Accrued property, income and other taxes10
 10
Regulatory liabilities19
 69
Current portion of long-term debt and financial and capital lease obligations2
 1
Customer deposits
15
 16
Other current liabilities12
 12
Total current liabilities164
 268
    
Long-term debt and financial and capital lease obligations1,152
 1,152
Regulatory liabilities481
 221
Deferred income taxes330
 617
Other long-term liabilities114
 127
Total liabilities2,241
 2,385
    
Commitments and contingencies (Note 13)   
    
Shareholder's equity:   
Common stock - $3.75 stated value, 20,000,000 shares authorized and 1,000 issued and outstanding
 
Other paid-in capital1,111
 1,111
Retained earnings (accumulated deficit)62
 (2)
Accumulated other comprehensive loss, net(1) (1)
Total shareholder's equity1,172
 1,108
    
Total liabilities and shareholder's equity$3,413
 $3,493
    
The accompanying notes are an integral part of the consolidated financial statements.






SIERRA PACIFIC POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating revenue:
Regulated electric$738 $770 $752 
Regulated natural gas116 119 103 
Total operating revenue854 889 855 
Operating expenses:
Cost of fuel and energy301 337 322 
Cost of natural gas purchased for resale62 62 49 
Operations and maintenance162 172 190 
Depreciation and amortization141 125 119 
Property and other taxes23 22 23 
Total operating expenses689 718 703 
Operating income165 171 152 
Other income (expense):
Interest expense(56)(48)(44)
Allowance for borrowed funds
Allowance for equity funds
Other, net11 
Total other income (expense)(39)(40)(30)
Income before income tax expense126 131 122 
Income tax expense15 28 30 
Net income$111 $103 $92 
The accompanying notes are an integral part of these financial statements.

385
 Years Ended December 31,
 2017 2016 2015
      
Operating revenue:     
Electric$713
 $702
 $810
Natural gas99
 110
 137
Total operating revenue812
 812
 947
      
Operating costs and expenses:     
Cost of fuel, energy and capacity268
 265
 374
Natural gas purchased for resale42
 55
 84
Operations and maintenance166
 170
 167
Depreciation and amortization114
 118
 113
Property and other taxes24
 24
 25
Total operating costs and expenses614
 632
 763
      
Operating income198
 180
 184
      
Other income (expense):     
Interest expense(43) (54) (61)
Allowance for borrowed funds2
 4
 2
Allowance for equity funds3
 (1) 2
Other, net4
 4
 3
Total other income (expense)(34) (47) (54)
      
Income before income tax expense164
 133
 130
Income tax expense55
 49
 47
Net income$109
 $84
 $83
      
The accompanying notes are an integral part of these consolidated financial statements.




SIERRA PACIFIC POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY
(Amounts in millions, except shares)

RetainedAccumulated
OtherEarningsOtherTotal
Common StockPaid-in(AccumulatedComprehensiveShareholder's
SharesAmountCapitalDeficit)Loss, NetEquity
Balance, December 31, 20171,000 $$1,111 $62 $(1)$1,172 
Net income— — — 92 — 92 
Other equity transactions— — — (1)— 
Balance, December 31, 20181,000 1,111 153 1,264 
Net income— — — 103 — 103 
Dividends declared— — — (46)— (46)
Other equity transactions— — — — (1)(1)
Balance, December 31, 20191,000 1,111 210 (1)1,320 
Net income— — — 111 — 111 
Dividends declared— — — (20)— (20)
Balance, December 31, 20201,000 $$1,111 $301 $(1)$1,411 
The accompanying notes are an integral part of these financial statements.

386
        Retained Accumulated  
      Other Earnings Other Total
  Common Stock Paid-in (Accumulated Comprehensive Shareholder's
  Shares Amount Capital Deficit) Loss, Net Equity
Balance, December 31, 2014 1,000
 $
 $1,111
 $(111) $(2) $998
Net income 
 
 
 83
 
 83
Dividends declared 
 
 
 (7) 
 (7)
Other equity transactions 
 
 
 
 2
 2
Balance, December 31, 2015 1,000
 
 1,111
 (35) 
 1,076
Net income 
 
 
 84
 
 84
Dividends declared 
 
 
 (51) 
 (51)
Other equity transactions

 
 
 
 
 (1) (1)
Balance, December 31, 2016 1,000
 
 1,111
 (2) (1) 1,108
Net income 
 
 
 109
 
 109
Dividends declared 
 
 
 (45) 
 (45)
Balance, December 31, 2017 1,000
 $
 $1,111
 $62
 $(1) $1,172
             
The accompanying notes are an integral part of these consolidated financial statements.




SIERRA PACIFIC POWER COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)

Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$111 $103 $92 
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization141 125 119 
Allowance for equity funds(4)(3)(4)
Changes in regulatory assets and liabilities(33)25 42 
Deferred income taxes and amortization of investment tax credits12 
Deferred energy(17)15 
Amortization of deferred energy(14)(2)(10)
Other, net(2)
Changes in other operating assets and liabilities:
Trade receivables and other assets(81)(6)
Inventories(19)(5)(4)
Accrued property, income and other taxes(16)
Accounts payable and other liabilities87 (8)18 
Net cash flows from operating activities190 237 275 
Cash flows from investing activities:
Capital expenditures(246)(248)(205)
Other, net
Net cash flows from investing activities(246)(247)(205)
Cash flows from financing activities:
Proceeds from long-term debt30 125 
Repayments of long-term debt(109)
Proceeds from short-term debt45 
Dividends paid(20)(46)
Other, net(5)(4)(2)
Net cash flows from financing activities50 (34)(2)
Net change in cash and cash equivalents and restricted cash and cash equivalents(6)(44)68 
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period32 76 
Cash and cash equivalents and restricted cash and cash equivalents at end of period$26 $32 $76 
The accompanying notes are an integral part of these financial statements.

387
 Years Ended December 31,
 2017 2016 2015
      
Cash flows from operating activities:     
Net income$109
 $84
 $83
Adjustments to reconcile net income to net cash flows from operating activities:     
Loss on nonrecurring items
 5
 
Depreciation and amortization114
 118
 113
Allowance for equity funds(4) 1
 (2)
Deferred income taxes and amortization of investment tax credits55
 49
 47
Changes in regulatory assets and liabilities17
 (17) (21)
Deferred energy(20) 53
 81
Amortization of deferred energy(47) (54) 17
Other, net(3) 
 (9)
Changes in other operating assets and liabilities:     
Accounts receivable and other assets4
 7
 15
Inventories(3) (6) 1
Accrued property, income and other taxes1
 (3) 
Accounts payable and other liabilities(41) 6
 17
Net cash flows from operating activities182
 243
 342
      
Cash flows from investing activities:     
Capital expenditures(186) (194) (252)
Other, net
 
 2
Net cash flows from investing activities(186) (194) (250)
      
Cash flows from financing activities:     
Proceeds from issuance of long-term debt
 1,089
 
Repayments of long-term debt and financial and capital lease obligations(2) (1,138) (1)
Dividends paid(45) (51) (7)
Net cash flows from financing activities(47) (100) (8)
      
Net change in cash and cash equivalents(51) (51) 84
Cash and cash equivalents at beginning of period55
 106
 22
Cash and cash equivalents at end of period$4
 $55
 $106
      
The accompanying notes are an integral part of these consolidated financial statements.




SIERRA PACIFIC POWER COMPANY AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(1)    Organization and Operations


Sierra Pacific Power Company together with its subsidiaries ("Sierra Pacific"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Nevada Power Company and its subsidiaries ("Nevada Power") and certain other subsidiaries. Sierra Pacific is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers and regulated retail natural gas customers primarily in northern Nevada. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway").


(2)    Summary of Significant Accounting Policies


Basis of Consolidation and Presentation


The Consolidated Financial Statements include the accounts of Sierra Pacific and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the years ended December 31, 2017, 20162020, 2019 and 2015. Certain amounts in the prior period Consolidated Financial Statements have been reclassified to conform to the current period presentation. Such reclassifications did not impact previously reported operating income, net income or retained earnings.2018.


Use of Estimates in Preparation of Financial Statements


The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.


Accounting for the Effects of Certain Types of Regulation


Sierra Pacific prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Sierra Pacific defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.


Sierra Pacific continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Sierra Pacific's ability to recover its costs. Sierra Pacific believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at both the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be written off to net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").



Fair Value Measurements


As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

388


Cash Equivalents and Restricted Cash and Investments


Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted amounts are included in other current assets and other current assets on the Consolidated Balance Sheets.


Allowance for Doubtful AccountsCredit Losses


Accounts receivableTrade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for doubtful accounts.credit losses. The allowance for doubtful accountscredit losses is based on Sierra Pacific's assessment of the collectibilitycollectability of amounts owed to Sierra Pacific by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, Sierra Pacific primarily utilizes credit loss history. However, Sierra Pacific may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. Sierra Pacific also has the ability to assess deposits on customers who have delayed payments or who are deemed to be a credit risk. The changechanges in the balance of the allowance for doubtful accounts,credit losses, which is included in accounts receivable,trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):

2017 2016 2015202020192018
Beginning balance$2
 $1
 $2
Beginning balance$$$
Charged to operating costs and expenses, net2
 2
 1
Charged to operating costs and expenses, net
Write-offs, net(2) (1) (2)Write-offs, net(2)(1)(1)
Ending balance$2
 $2
 $1
Ending balance$$$


Derivatives


Sierra Pacific employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price and interest rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements.


Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked‑to‑market and settled amounts are recognized as cost of fuel, energy and capacity or natural gas purchased for resale on the Consolidated Statements of Operations.


For Sierra Pacific's derivative contracts, the settled amount is generally included in regulated rates. Accordingly, the net unrealized gains and losses associated with interim price movements on contracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as regulatory assets and liabilities. For a derivative contract not probable of inclusion in rates, changes in the fair value are recognized in earnings.


Inventories


Inventories consist mainly of materials and supplies totaling $42$67 million and $36$49 million as of December 31, 20172020 and 2016,2019, respectively, and fuel, which includes coal stock, stored natural gas and fuel oil, totaling $7$10 million and $9$8 million as of December 31, 20172020 and 2016,2019, respectively. The cost is determined using the average cost method. Materials are charged to inventory when purchased and are expensed or capitalized to construction work in process, as appropriate, when used. Fuel costs are recovered from retail customers through the base tariff energy rates and deferred energy accounting adjustment charges approved by the Public Utilities Commission of Nevada ("PUCN").


389


Property, Plant and Equipment, Net


General


Additions to property, plant and equipment are recorded at cost. Sierra Pacific capitalizes all construction-related material, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed. The cost of repairs and minor replacements are charged to expense when incurred with the exception of costs for generation plant maintenance under certain long-term service agreements. Costs under these agreements are expensed straight-line over the term of the agreements as approved by the PUCN.


Depreciation and amortization are generally computed by applying the composite or straight-line method based on either estimated useful lives or mandated recovery periods as prescribed by Sierra Pacific's various regulatory authorities. Depreciation studies are completed by Sierra Pacific to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the applicable regulatory commission. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as a non-current regulatory liability on the Consolidated Balance Sheets. As actual removal costs are incurred, the associated liability is reduced.


Generally when Sierra Pacific retires or sells a component of regulated property, plant and equipment depreciated using the composite method, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings with the exception of material gains or losses on regulated property, plant and equipment depreciated on a straight-line basis, which is then recorded to a regulatory asset or liability.


Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, are capitalized as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. The rate applied to construction costs is the lower of the PUCN allowed rate of return and rates computed based on guidelines set forth by the Federal Energy Regulatory Commission ("FERC"). After construction is completed, Sierra Pacific is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets. Sierra Pacific's AFUDC rate used during 20172020 and 20162019 was 6.65%6.75% and 7.62%6.65% for electric, 5.63% and 6.02%respectively, 5.75% for natural gas and 6.55%6.65% and 7.44%6.55% for common facilities, respectively.


Asset Retirement Obligations


Sierra Pacific recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. Sierra Pacific's AROs are primarily associated with its generating facilities. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. The difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability on the Consolidated Balance Sheets. The costs are not recovered in rates until the work has been completed.



Impairment of Long-Lived Assets


Sierra Pacific evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. As substantially all property, plant and equipment was used in regulated businesses as of December 31, 2017,2020, the impacts of regulation are considered when evaluating the carrying value of regulated assets.


390


Leases

    Lessee

Sierra Pacific has non-cancelable operating leases primarily for transmission and delivery assets, generating facilities, vehicles and office equipment and finance leases consisting primarily of transmission assets, generating facilities and vehicles. These leases generally require Sierra Pacific to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. Sierra Pacific does not include options in its lease calculations unless there is a triggering event indicating Sierra Pacific is reasonably certain to exercise the option. Sierra Pacific's accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Leases will be evaluated for impairment in line with Accounting Standards Codification ("ASC") Topic 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

Sierra Pacific's leases of generating facilities generally are for the long-term purchase of electric energy, also known as power purchase agreements ("PPA"). PPAs are generally signed before or during the early stages of project construction and can yield a lease that has not yet commenced. These agreements are primarily for renewable energy and the payments are considered variable lease payments as they are based on the amount of output.

Sierra Pacific's operating and finance right-of-use assets are recorded in other assets and the operating and current finance lease liabilities are recorded in current and long-term other liabilities accordingly.

Income Taxes


Berkshire Hathaway includes Sierra Pacific in its consolidated United States federal income tax return. Consistent with established regulatory practice, Sierra Pacific's provision for income taxes has been computed on a separate return basis.


Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using estimatedenacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities that are associated with components of other comprehensive income ("OCI") are charged or credited directly to OCI. On December 22, 2017, the Tax Cuts and Jobs Act ("2017 Tax Reform") was signed into law which, among other items, reduces the federal corporate tax rate from 35% to 21%. Changes in deferred income tax assets and liabilities that are associated with income tax benefits and expense for the federal tax rate change from 35% to 21%, certain property-related basis differences and other various differences that Sierra Pacific deems probable to be passed on to its customers are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized. Investment tax credits are generally deferred and amortized over the estimated useful lives of the related properties.


In determining Sierra Pacific's income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by Sierra Pacific's various regulatory jurisdictions.commissions. Sierra Pacific's income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Sierra Pacific recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Sierra Pacific's federal, state and local income tax examinations is uncertain, Sierra Pacific believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Sierra Pacific's consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.


391


Revenue Recognition


Sierra Pacific uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which Sierra Pacific expects to be entitled in exchange for those goods or services. Sierra Pacific records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Statements of Operations.

Substantially all of Sierra Pacific's Customer Revenue is recognizedderived from tariff-based sales arrangements approved by various regulatory commissions. These tariff-based revenues are mainly comprised of energy, transmission, distribution and natural gas and have performance obligations to deliver energy products and services to customers which are satisfied over time as electricity or natural gasenergy is delivered or services are provided. Other revenue consists primarily of revenue recognized in accordance with ASC 842, "Leases" and amounts not considered Customer Revenue within ASC 606, "Revenue from Contracts with Customers."

Revenue recognized is equal to what Sierra Pacific has the right to invoice as it corresponds directly with the value to the customer of Sierra Pacific's performance to date and includes billed and unbilled amounts. As of December 31, 20172020 and 2016, unbilled revenue was $62 million and $52 million, respectively, and is included in accounts receivable,2019, trade receivables, net on the Consolidated Balance Sheets.Sheets relate substantially to Customer Revenue, including unbilled revenue of $59 million and $63 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements.arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued. Sierra Pacific records sales, franchise and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.

Sierra Pacific primarily buys energy and natural gas to satisfy its customer load requirements. Due to changes in retail customer load requirements, Sierra Pacific may not take physical delivery of the energy or natural gas. Sierra Pacific may sell the excess energy or natural gas to the wholesale market. In such instances, it is Sierra Pacific's policy to allocate the natural gas sales between generation and natural gas retail based on usage. The energy sales and natural gas sales allocated to generation are recorded net in cost of fuel, energy and capacity. The natural gas sales allocated to natural gas retail is recorded as wholesale revenue.



Unamortized Debt Premiums, Discounts and Issuance Costs


Premiums, discounts and financing costs incurred for the issuance of long-term debt are amortized over the term of the related financing on a straight-line basis.


New Accounting Pronouncements

In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. Sierra Pacific adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, "Statement of Cash Flows - Overall." The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Sierra Pacific adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.

In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Sierra Pacific adopted this guidance effective January 1, 2018 and the adoption will not have a material impact on its Consolidated Financial Statements.

In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. In January 2018, the FASB issued ASU No. 2018-01 that provides for an optional transition practical expedient allowing companies to not have to evaluate existing land easements if they were not previously accounted for under ASC Topic 840, "Leases." This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. Sierra Pacific plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements.


In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016 and 2017, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. Sierra Pacific adopted this guidance effective January 1, 2018 under the modified retrospective method and the adoption will not have an impact on its Consolidated Financial Statements but will increase the disclosures included within Notes to Consolidated Financial Statements. The timing and amount of revenue recognized after adoption of the new guidance will not be different than before as a majority of revenue is recognized when Sierra Pacific has the right to invoice as it corresponds directly with the value to the customer of Sierra Pacific's performance to date. Sierra Pacific's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by segment and customer class.

(3)    Property, Plant and Equipment, Net


Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20202019
Utility plant:
Electric generation25 - 60 years$1,130 $1,133 
Electric transmission50 - 100 years908 840 
Electric distribution20 - 100 years1,754 1,669 
Electric general and intangible plant5 - 70 years189 178 
Natural gas distribution35 - 70 years429 417 
Natural gas general and intangible plant5 - 70 years15 14 
Common general5 - 70 years355 338 
Utility plant4,780 4,589 
Accumulated depreciation and amortization(1,755)(1,629)
Utility plant, net3,025 2,960 
Other non-regulated, net of accumulated depreciation and amortization70 years
Plant, net3,027 2,962 
Construction work-in-progress137 113 
Property, plant and equipment, net$3,164 $3,075 


392

 Depreciable Life 2017 2016
Utility plant:     
Electric generation25 - 60 years $1,144
 $1,137
Electric distribution20 - 100 years 1,459
 1,417
Electric transmission50 - 100 years 786
 771
Electric general and intangible plant5 - 70 years 181
 164
Natural gas distribution35 - 70 years 390
 381
Natural gas general and intangible plant5 - 70 years 14
 15
Common general5 - 70 years 294
 267
Utility plant  4,268
 4,152
Accumulated depreciation and amortization  (1,513) (1,442)
Utility plant, net  2,755
 2,710
Other non-regulated, net of accumulated depreciation and amortization70 years 5
 5
Plant, net  2,760
 2,715
Construction work-in-progress  132
 107
Property, plant and equipment, net  $2,892
 $2,822


All of Sierra Pacific's plant is subject to the ratemaking jurisdiction of the PUCN and the FERC. Sierra Pacific's depreciation and amortization expense, as authorized by the PUCN, stated as a percentage of the depreciable property balances as of December 31, 2017, 20162020, 2019 and 20152018 was 3.0%3.2%, 3.0%3.1% and 2.9%3.1%, respectively. Sierra Pacific is required to file a utility plant depreciation study every six years as a companion filing with the triennial general rate casereview filings. The most recent study was filed in 2016.


Construction work-in-progress is primarily related to the construction of regulated assets.


In January 2017, Sierra Pacific revised its electric and gas depreciation rates based on the results of a new depreciation study performed in 2016, the most significant impact of which was shorter estimated useful lives at the Valmy Generating Station. The effect of this change increased depreciation and amortization expense by $9 million annually based on depreciable plant balances at the time of the study. However, the PUCN ordered the change relating to the Valmy Generating Station of $7 million annually be deferred for future recovery through a regulatory asset.


(4)    Jointly Owned Utility Facilities


Under joint facility ownership agreements, Sierra Pacific, as tenants in common, has undivided interests in jointly owned generation and transmission facilities. Sierra Pacific accounts for its proportionate share of each facility and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include Sierra Pacific's share of the expenses of these facilities.


The amounts shown in the table below represent Sierra Pacific's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 20172020 (dollars in millions):
SierraConstruction
Pacific'sUtilityAccumulatedWork-in-
SharePlantDepreciationProgress
Valmy Generating Station50 %$390 $291 $
ON Line Transmission Line35 
Valmy Transmission50 
Total$429 $300 $

(5)    Leases

The following table summarizes Sierra Pacific's leases recorded on the Balance Sheet as of December 31 (in millions):
20202019
Right-of-use assets:
Operating leases$16 $17 
Finance leases126 43 
Total right-of-use assets$142 $60 
Lease liabilities:
Operating leases$16 $17 
Finance leases130 45 
Total lease liabilities$146 $62 

393


 Sierra     Construction
 Pacific's Utility Accumulated Work-in-
 Share Plant Depreciation Progress
        
Valmy Generating Station50% $388
 $233
 $1
ON Line Transmission Line1
 8
 1
 
Valmy Transmission50
 4
 2
 
Total  $400
 $236
 $1
The following table summarizes Sierra Pacific's lease costs for the years ended December 31 (in millions):

20202019
Variable$78 $69 
Operating
Finance:
Amortization
Interest
Total lease costs$93 $74 
Weighted-average remaining lease term (years):
Operating leases27.226.3
Finance leases27.820.9
Weighted-average discount rate:
Operating leases5.0 %5.0 %
Finance leases8.1 %7.1 %

(5)The following table summarizes Sierra Pacific's supplemental cash flow information relating to leases as of December 31 (in millions):
20202019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$(2)$(3)
Operating cash flows from finance leases(6)(3)
Financing cash flows from finance leases(5)(3)
Right-of-use assets obtained in exchange for lease liabilities:
Finance leases$89 $

Sierra Pacific has the following remaining lease commitments as of (in millions):
December 31, 2020
OperatingFinanceTotal
2021$$17 $19 
202217 18 
202317 18 
202416 17 
202516 17 
Thereafter25 170 195 
Total undiscounted lease payments31 253 284 
Less - amounts representing interest(15)(123)(138)
Lease liabilities$16 $130 $146 
394


Operating and Finance Lease Obligations

Sierra Pacific's operating and finance lease obligations consist mainly of ON Line and Truckee-Carson Irrigation District ("TCID"). ON Line was placed in-service on December 31, 2013. Sierra Pacific and Nevada Power, collectively the ("Nevada Utilities"), entered into a long-term transmission use agreement, in which the Nevada Utilities have a 25% interest and Great Basin Transmission South, LLC has a 75% interest. The Nevada Utilities' share of the long-term transmission use agreement and ownership interest is split at 75% for Nevada Power and 25% for Sierra Pacific, previously split 95% for Nevada Power and 5% for Sierra Pacific. In December 2019, the PUCN ordered the Nevada Utilities to complete the necessary procedures to change the ownership split to 75% for Nevada Power and 25% for Sierra Pacific, effective January 1, 2020. In August 2020, the FERC approved the amended agreement between the Nevada Utilities and Great Basin Transmission, LLC that reallocated the PUCN-approved ownership percentage change from Nevada Power to Sierra Pacific. The term of the lease is 41 years with the agreement ending December 31, 2054. In 1999, Sierra Pacific entered into a 50-year agreement with TCID to lease electric distribution facilities. Total finance lease obligations of $122 million and $35 million were included on the Consolidated Balance Sheets as of December 31, 2020 and 2019, respectively, for these leases. See Note 2 for further discussion of Sierra Pacific's remaining lease obligations.

(6)    Regulatory Matters


Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future rates. Sierra Pacific's regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Employee benefit plans(1)
8 years$81 $107 
Merger costs from 1999 merger26 years68 71 
Natural disaster protection plan1 year45 
Deferred operating costs11 years27 23 
Abandoned projects6 years22 24 
Deferred energy costs1 year22 
Losses on reacquired debt15 years15 17 
OtherVarious54 41 
Total regulatory assets$334 $295 
Reflected as:
Current assets$67 $12 
Noncurrent assets267 283 
Total regulatory assets$334 $295 
 Weighted    
 Average    
 Remaining Life 2017 2016
      
Employee benefit plans(1)
8 years $110
 $128
Merger costs from 1999 merger29 years 77
 80
Abandoned projects7 years 34
 39
Renewable energy programs2 years 23
 25
Losses on reacquired debt16 years 21
 22
Deferred income taxes(2)
N/A 
 85
OtherVarious 67
 56
Total regulatory assets  $332
 $435
      
Reflected as:     
Current assets  $32
 $25
Other assets  300
 410
Total regulatory assets  $332
 $435


(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.
(1)Represents amounts not yet recognized as a component of net periodic benefit cost that are expected to be included in regulated rates when recognized.

(2)Amounts represent income tax benefits related to accelerated tax depreciation and certain property-related basis differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.


Sierra Pacific had regulatory assets not earning a return on investment of $188$149 million and $305$168 million as of December 31, 20172020 and 2016,2019, respectively. The regulatory assets not earning a return on investment primarily consist of merger costs from the 1999 merger, a portion of the employee benefit plans, losses on reacquired debt, asset retirement obligationsAROs and legacy meters.

395


Regulatory assets not earning a return as of December 31, 2016 also included deferred income taxes.Liabilities



Regulatory liabilities represent amounts that are expected to be returned to customers in future periods. Sierra Pacific's regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted
Average
Remaining Life20202019
Deferred income taxes(1)
Various$249 $263 
Cost of removal(2)
37 years197 217 
OtherVarious51 58 
Total regulatory liabilities$497 $538 
Reflected as:
Current liabilities$34 $49 
Noncurrent liabilities463 489 
Total regulatory liabilities$497 $538 
 Weighted    
 Average    
 Remaining Life 2017 2016
      
Deferred income taxes(1)
29 years $264
 $6
Cost of removal(2)
41 years 211
 205
Deferred energy costs2 years 8
 64
OtherVarious 17
 15
Total regulatory liabilities  $500
 $290
      
Reflected as:     
Current liabilities  $19
 $69
Other long-term liabilities  481
 221
Total regulatory liabilities  $500
 $290


(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to accelerated tax depreciation and certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.
(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to accelerated tax depreciation and certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse. See Note 9 for further discussion of 2017 Tax Reform impacts.


(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing regulated property, plant and equipment in accordance with accepted regulatory practices. Amounts are deducted from rate base or otherwise accrue a carrying cost.

(2)Amounts represent estimated costs, as accrued through depreciation rates and exclusive of ARO liabilities, of removing regulated property, plant and equipment in accordance with accepted regulatory practices.

Deferred Energy


Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the PUCN. Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Consolidated Statements of Operations but rather is deferred and recorded as a regulatory asset on the Consolidated Balance Sheets and would be included in the table above as deferred energy costs. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs and is included in the table above as deferred energy costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel, energy and capacity in future time periods.


Regulatory Rate Review


In June 2016,2019, Sierra Pacific filed an electric regulatory rate review with the PUCN. The filing requested no incrementalsupported an annual revenue relief.increase of $5 million but requested an annual revenue reduction of $5 million. In October 2016,September 2019, Sierra Pacific filed an all-party settlement for the electric regulatory rate review. The settlement resolves all cost of capital and revenue requirement issues and provides for an annual revenue reduction of $5 million and requires Sierra Pacific to share 50% of regulatory earnings above 9.7% with its customers. The rate design portion of the regulatory rate review was not a part of the settlement and a hearing on rate design was held in November 2019. In December 2019, the PUCN a settlement agreement resolving most,issued an order approving the stipulation but not all, issuesmade some adjustments to the methodology for the weather normalization component of historical sales in the proceeding and reduced Sierra Pacific's electric revenue requirement by $3 million spread evenly to all rate classes. In December 2016, the PUCN approved the settlement agreement and established an additional six MW of net metering capacity under the grandfathered rates, which are those net metering rates that wereresulted in effect prior to January 2016; the order establishes cost-based rates and a value-based excess energy credit for customers who choose to install private generation after the six MW limitation is reached.an annual revenue reduction of $3 million. The new rates were effective January 1, 2017.2020. In January 2020, Sierra Pacific filed a petition for rehearing challenging the PUCN's adjustments to the weather normalization methodology. In February 2020, the PUCN issued an order granting the petition for rehearing. In April 2020, the PUCN issued a final order approving a weather normalization methodology that changed the additional annual revenue reduction from $3 million to $2 million with an effective date of January 1, 2020. Customers billed under rates using the initial revenue reduction were issued credits in the fourth quarter of 2020.


396


Natural Disaster Protection Plan

In May 2019, Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law, which requires Sierra Pacific to submit a natural disaster protection plan to the PUCN. The PUCN adopted natural disaster protection plan regulations in January 2020, that required Sierra Pacific to file their natural disaster protection plan for approval on or before March 1 of every third year. The regulations also require annual updates to be filed on or before September 1 of the second and third years of the plan. The plan must include procedures, protocols and other certain information as it relates to the efforts of Sierra Pacific to prevent or respond to a fire or other natural disaster. The expenditures incurred by Sierra Pacific in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with Sierra Pacific filing an application for recovery on or before March 1 of each year. Sierra Pacific submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, a modified final order was issued after Sierra Pacific and the Bureau of Consumer Protection filed for reconsideration. Intervenors have filed a petition for judicial review with the District Court in November 2020. In December 2020, the PUCN issued a second modified final order approving the natural disaster protection plan, as modified, and reopened its investigation and rulemaking on SB 329 to address rate design issues raised by intervenors. The comment period for the reopened investigation and rulemaking ended in early February 2021 and the matter is ongoing.

2017 Tax Reform

In February 2018, Sierra Pacific made filings with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by Sierra Pacific. The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing Sierra Pacific to record the amortization of any excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 1, 2018. Subsequently, Sierra Pacific filed a petition for reconsideration relating to the creationamortization of protected excess accumulated deferred income tax balances resulting from the additional six MW of net metering at the grandfathered rates. Sierra Pacific believes the effects of2017 Tax Reform. In November 2018, the PUCN decision results in additional cost shifting to non-net metering customersissued an order granting reconsideration and reducesreaffirming the stipulated rate reduction for other customer classes.September 2018 order. In June 2017, the PUCN denied the petition for reconsideration.

In June 2016,December 2018, Sierra Pacific filed a gaspetition for judicial review with the district court. The district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, Sierra Pacific filed a notice of appeal to the Nevada Supreme Court of the district court's order. Sierra Pacific agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review withsettlement. In December 2020, the PUCN. The filing requestedPUCN issued a slight decrease in its incremental annual revenue requirement.final order accepting the settlement. In October 2016,January 2021, Sierra Pacific filed withtheir withdrawal and the PUCN a settlement agreement resolving all issues inmatter was dismissed by the proceeding and reduced Sierra Pacific's gas revenue requirement by $2 million. In December 2016, the PUCN approved the settlement agreement. The new rates were effective January 1, 2017.court.



Energy Efficiency Program Rates ("EEPR") and Energy Efficiency Implementation Rates ("EEIR")


EEPR was established to allow Sierra Pacific to recover the costs of implementing energy efficiency programs and EEIR was established to offset the negative impacts on revenue associated with the successful implementation of energy efficiency programs. These rates change once a year in the utility's annual DEAA application based on energy efficiency program budgets prepared by Sierra Pacific and approved by the PUCN in integrated resource plan proceedings. To the extentPacific. When Sierra Pacific's regulatory earned rate of return for a calendar year exceeds the regulatory rate of return used to set base tariff general rates, Sierra Pacificit is requiredobligated to refund to customers EEIRenergy efficiency implementation revenue previously collected for that year. In March 2017,February 2020, Sierra Pacific filed an application to reset the EEIR and EEPR.EEPR and to refund the EEIR revenue received in 2019, including carrying charges. In September 2017,August 2020, the PUCN issued an order accepting a stipulation requiring Sierra Pacific to refund the 2019 revenue and reset the rates as filed effective October 1, 2017. The2020.The EEIR liability for Sierra Pacific is $1 million and $2 million, which is included in current regulatory liabilities on the Consolidated Balance Sheets as of December 31, 20172020 and 2016, respectively.2019.


Chapter 704B Applications
397



Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one megawatt ("MW") or more to file with the PUCN an application to purchase energy from alternative providers of a new electric resource(7)Short-term Debt and become distribution only service customers. On a case-by-case basis, the PUCN will assess the application and may deny or grant the application subject to conditions, including paying an impact fee, paying on-going charges and receiving approval for specific alternative energy providers and terms. The impact fee and on-going charges are assessed to alleviate the burden on other Nevada customers for the applicant's share of previously committed investments and long-term renewable contracts and are set at a level designed such that the remaining customers are not subjected to increased costs.Credit Facilities

In September 2016, Switch, Ltd. ("Switch"), a customer of Sierra Pacific, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Sierra Pacific. In December 2016, the PUCN approved a stipulation agreement that allows Switch to purchase energy from alternative providers without paying an impact fee, subject to conditions. In June 2017, Switch became a distribution only service customer and started procuring energy from another energy supplier.

In November 2016, Caesars Enterprise Service ("Caesars"), a customer of Sierra Pacific, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Sierra Pacific. In March 2017, the PUCN approved the application allowing Caesars to purchase energy from alternative providers subject to conditions, including paying an impact fee. In March 2017, Caesars provided notice that it intends to pay the impact fee monthly for three years and proceed with purchasing energy from alternative providers. In July 2017, Caesars made the required compliance filings and, in September 2017, the PUCN issued an order allowing Caesars to acquire electric energy and ancillary services from another energy supplier and become a distribution only service customer of Sierra Pacific. In January 2018, Caesars became a distribution only service customer and started procuring energy from another energy supplier for its eligible meters in the Sierra Pacific service territory.

In May 2017, Peppermill Resort Spa Casino ("Peppermill"), a customer of Sierra Pacific, filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Sierra Pacific. In August 2017, the PUCN approved a stipulation allowing Peppermill to purchase energy from alternative providers subject to conditions, including paying an impact fee. In September 2017, Peppermill provided notice that it intends to pay the impact fee and proceed with purchasing energy from alternative providers.


(6)Credit Facility


The following table summarizes Sierra Pacific's availability under its credit facilities as of December 31 (in millions):
20202019
Credit facilities$250 $250 
Short-term debt(45)
Net credit facilities$205 $250 
  2017 2016
Credit facilities $250
 $250
Less - Water Facilities Refunding Revenue Bond support

 (80) (80)
Net credit facilities $170
 $170


Sierra Pacific has a $250 million secured credit facility expiring in June 2020 with two one-year extension options subject to lender consent.2022 The credit facility, which is for general corporate purposes and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Sierra Pacific's option, plus a spread that varies based on Sierra Pacific's credit ratings for its senior secured long‑term debt securities. As of December 31, 20172020 and 2016,2019, Sierra Pacific had no borrowings of $45 million and $— million, respectively, outstanding under the credit facility. As of December 31, 2020, the weighted average interest rate on borrowings outstanding was 0.90%. Amounts due under Sierra Pacific's credit facility are collateralized by Sierra Pacific's general and refunding mortgage bonds. The credit facility requires Sierra Pacific's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter.


(7)    Long-Term(8)    Long-term Debt and Financial and Capital Lease Obligations


Sierra Pacific's long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars in millions):
Par Value20202019
General and refunding mortgage securities:
3.375% Series T, due 2023$250 $249 $249 
2.600% Series U, due 2026400 396 396 
6.750% Series P, due 2037252 255 255 
Tax-exempt refunding revenue bond obligations:
Fixed-rate series:
1.850% Pollution Control Series 2016B, due 2029 (1)
30 29 29 
3.000% Gas and Water Series 2016B, due 2036 (2)
60 61 62 
0.625% Water Facilities Series 2016C, due 2036 (3)
30 30 
2.050% Water Facilities Series 2016D, due 2036 (1) (4)
25 25 25 
2.050% Water Facilities Series 2016E, due 2036 (1) (4)
25 25 25 
2.050% Water Facilities Series 2016F, due 2036 (1)
75 74 74 
1.850% Water Facilities Series 2016G, due 2036 (1)
20 20 20 
Total long-term debt$1,167 $1,164 $1,135 
Reflected as -
Long-term debt$1,164 $1,135 

(1)Subject to mandatory purchase by Sierra Pacific in April 2022 at which date the interest rate may be adjusted.
(2)Subject to mandatory purchase by Sierra Pacific in June 2022 at which date the interest rate may be adjusted.
(3)Bond was purchased by Sierra Pacific during 2019 and re-offered at a fixed rate in September 2020 for a two-year term subject to mandatory purchase by Sierra Pacific in April 2022.
(4)Bonds were purchased by Sierra Pacific during 2019 and re-offered at a fixed interest rate.

398

 Par Value 2017 2016
General and refunding mortgage securities:     
3.375% Series T, due 2023$250
 $248
 $248
2.600% Series U, due 2026400
 396
 395
6.750% Series P, due 2037252
 255
 255
Tax-exempt refunding revenue bond obligations:     
Fixed-rate series:     
1.250% Pollution Control Series 2016A, due 2029(1)
20
 20
 20
1.500% Gas Facilities Series 2016A, due 2031(1)
59
 58
 58
3.000% Gas and Water Series 2016B, due 2036(2)
60
 63
 64
Variable-rate series (2017 - 1.690% to 1.840%, 2016 - 0.788% to 0.800%):     
Water Facilities Series 2016C, due 203630
 30
 29
Water Facilities Series 2016D, due 203625
 25
 25
Water Facilities Series 2016E, due 203625
 25
 25
Capital and financial lease obligations (2017 - 2.700% to 10.396%, 2016 - 2.700% to 10.130%), due through 205434
 34
 34
Total long-term debt and financial and capital leases$1,155
 $1,154
 $1,153
      
Reflected as:     
Current portion of long-term debt and financial and capital lease obligations  $2
 $1
Long-term debt and financial and capital lease obligations  1,152
 1,152
Total long-term debt and financial and capital leases  $1,154
 $1,153


(1)Subject to mandatory purchase by Sierra Pacific in June 2019 at which date the interest rate may be adjusted from time to time.
(2)Subject to mandatory purchase by Sierra Pacific in June 2022 at which date the interest rate may be adjusted from time to time.

Annual Payment on Long-Term Debt and Financial and Capital Leases


The annual repayments of long-term debt and capital and financial leases for the years beginning January 1, 20182021 and thereafter, are as follows (in millions):
2023$250 
2026 and thereafter917 
Total1,167 
Unamortized premium, discount and debt issuance cost(3)
Total$1,164 
  Long-term Capital and Financial  
  Debt Lease Obligations Total
       
2018 $
 $4
 $4
2019 
 4
 4
2020 
 4
 4
2021 
 4
 4
2022 
 3
 3
Thereafter 1,121
 47
 1,168
Total 1,121
 66
 1,187
Unamortized premium, discount and debt issuance cost
 (1) 
 (1)
Amounts representing interest 
 (32) (32)
Total $1,120
 $34
 $1,154


The issuance of General and Refunding Mortgage Securities by Sierra Pacific is subject to PUCN approval and is limited by available property and other provisions of the mortgage indentures. As of December 31, 2017,2020, approximately $3.9$4.3 billion (based on original cost) of Sierra Pacific's property was subject to the liens of the mortgages.


Financial and Capital Lease Obligations

(9)    Income Taxes
Sierra Pacific has master leasing agreements
Income tax expense (benefit) consists of which various piecesthe following for the years ended December 31 (in millions):
202020192018
Current – Federal$$19 $23 
Deferred – Federal12 10 
Uncertain tax positions
Investment tax credits(1)(1)
Total income tax expense$15 $28 $30 

A reconciliation of equipment qualifythe federal statutory income rate to the effective income tax rate applicable to income before income tax expense is as capital leases. follows for the years ended December 31:
 202020192018
Federal statutory income tax rate21 %21 %21 %
Effects of ratemaking(9)
Non-deductible expenses
Effective income tax rate12 %21 %25 %


399


The remaining equipment is treated as operating leases. Lease terms average seven years undernet deferred income tax liability consists of the master lease agreement. Capital assets of $3 million were included in property, plant and equipment, netfollowing as of December 31 2017 and 2016.(in millions):
ON Line was placed in-service on
 20202019
Deferred income tax assets:  
Regulatory liabilities$67 $70 
Employee benefit plans
Operating and finance leases30 13 
Customer advances10 
Other
Total deferred income tax assets117 104 
Deferred income tax liabilities:
Property related items(380)(370)
Regulatory assets(74)(62)
Operating and finance leases(30)(13)
Other(7)(6)
Total deferred income tax liabilities(491)(451)
Net deferred income tax liability$(374)$(347)

The United States Internal Revenue Service has closed its examination of NV Energy's consolidated income tax returns through December 31, 2008, and effectively settled its examination of Sierra Pacific's income tax return for the short year ended December 31, 2013, and the statute of limitations has expired for NV Energy's consolidated income tax returns through the short year ended December 19, 2013. The Nevada Utilities entered intoclosure or effective settlement of examinations, or the expiration of the statute of limitations may not preclude the Internal Revenue Service from adjusting the federal net operating loss carryforward utilized in a long-term transmission use agreement, inyear for which the Nevada Utilitiesexamination is not closed.

(10)    Employee Benefit Plans

Sierra Pacific is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Sierra Pacific. Sierra Pacific did 0t make any contributions to the Qualified Pension Plan for the years ended December 31, 2020 and 2019. Sierra Pacific contributed $6 million to the Qualified Pension Plan for the year ended December 31, 2018. Sierra Pacific contributed $1 million to the Non-Qualified Pension Plans for the years ended December 31, 2020, 2019 and 2018. Sierra Pacific did 0t make any contributions to the Other Post Retirement Plans for the years ended December 31, 2020 and 2019. Sierra Pacific contributed $6 million to the Other Postretirement Plans for the year ended December 31, 2018. Amounts attributable to Sierra Pacific were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have 25% interestbeen recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net.

400


Amounts receivable from (payable to) NV Energy are included on the Balance Sheets and Great Basin Transmission South, LLC has 75% interest. Refer to Note 4 for additional information. The Nevada Utilities shareconsist of the long-term transmission use agreement and ownership interest is split at 5% for Sierra Pacific and 95% for Nevada Power. The term is for 41 years with the agreement ending December 31, 2054. Payments began on January 31, 2014. ON Line assets of $21 million were included in property, plant and equipment, netfollowing as of December 31 2017 and 2016.(in millions):
In 2015,
20202019
Qualified Pension Plan:
Other non-current assets$26 $
Other long-term liabilities(4)
Non-Qualified Pension Plans:
Other current liabilities(1)(1)
Other long-term liabilities(8)(8)
Other Postretirement Plans -
Other long-term liabilities(13)(7)

(11)    Asset Retirement Obligations

Sierra Pacific entered intoestimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a 20-year capital leasethird party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the Fort Churchill Solar Array. Capitalamount and timing of the expected work.

Sierra Pacific does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain generation, transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Financial Statements other than those included in the cost of $9removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. These accruals totaled $197 million and $10$217 million were included in property, plant and equipment, net as of December 31, 20172020 and 2016,2019, respectively.


The following table presents Sierra Pacific's ARO liabilities by asset type as of December 31 (in millions):
(8)Fair Value Measurements

20202019
Asbestos$$
Evaporative ponds and dry ash landfills
Other
Total asset retirement obligations$11 $10 

The following table reconciles the beginning and ending balances of Sierra Pacific's ARO liabilities for the years ended December 31 (in millions):
20202019
Beginning balance$10 $10 
Accretion
Ending balance$11 $10 
Reflected as -
Other long-term liabilities$11 $10 

401


Certain of Sierra Pacific's decommissioning and reclamation obligations relate to jointly-owned facilities, and as such, Sierra Pacific is committed to pay a proportionate share of the decommissioning or reclamation costs. In the event of a default by any of the other joint participants, the respective subsidiary may be obligated to absorb, directly or by paying additional sums to the entity, a proportionate share of the defaulting party's liability. Sierra Pacific's estimated share of the decommissioning and reclamation obligations are primarily recorded as ARO liabilities in other long-term liabilities on the Balance Sheets.

(12)    Fair Value Measurements

The carrying value of Sierra Pacific's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Sierra Pacific has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:


Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Sierra Pacific has the ability to access at the measurement date.
Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).
Level 3 - Unobservable inputs reflect Sierra Pacific's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Sierra Pacific develops these inputs based on the best information available, including its own data.


The following table presents Sierra Pacific's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):

Input Levels for Fair Value Measurements
Level 1Level 2Level 3Total
As of December 31, 2020:
Assets:
Commodity derivatives$$$$
Money market mutual funds(1)
17 17 
Investment funds$— 
$17 $$$26 
Liabilities - commodity derivatives$$$(2)$(2)
As of December 31, 2019:
Assets - money market mutual funds(1)
$25 $$$25 
Liabilities - commodity derivatives$$$(1)$(1)

 Input Levels for Fair Value Measurements  
 Level 1 Level 2 Level 3 Total
As of December 31, 2017:       
Assets - investment funds$
 $
 $
 $
        
As of December 31, 2016:       
Assets:       
Money market mutual funds(1)
$35
 $
 $
 $35
Investment funds1
 
 
 1
 $36
 $
 $
 $36
        
(1)Amounts are included in cash and cash equivalents on the Balance Sheets. The fair value of these money market mutual funds approximates cost.

(1)Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.


Sierra Pacific's investments in money market mutual funds and equity securities are accounted for as available-for-sale securities and are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value.


402


Sierra Pacific's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Sierra Pacific's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Sierra Pacific's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Sierra Pacific's long-term debt as of December 31 (in millions):
20202019
CarryingFairCarryingFair
ValueValueValueValue
Long-term debt$1,164 $1,358 $1,135 $1,258 

(13)    Commitments and Contingencies
 2017 2016
 Carrying Fair Carrying Fair
 Value Value Value Value
        
Long-term debt$1,120
 $1,221
 $1,119
 $1,191

(9)Income Taxes

Tax Cuts and Jobs Act

The 2017 Tax Reform impacts many areas of income tax law. The most material items include the reduction of the federal corporate tax rate from 35% to 21% effective January 1, 2018, limitations on bonus depreciation for utility property and the elimination of the deduction for production activities. GAAP requires the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. As a result of the 2017 Tax Reform, Sierra Pacific reduced deferred income tax liabilities $342 million. As it is probable the change in deferred taxes will be passed back to customers through regulatory mechanisms, Sierra Pacific increased net regulatory liabilities by $341 million.


In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. Sierra Pacific has recorded the impacts of the 2017 Tax Reform and believes all the impacts to be complete with the exception of the interpretation of the bonus depreciation rules. Sierra Pacific has determined the amounts recorded and the interpretation relating to this item to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. Sierra Pacific believes its interpretations for bonus depreciation to be reasonable, however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.

Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
 2017 2016 2015
      
Deferred - Federal$56
 $50
 $48
Investment tax credits(1) (1) (1)
Total income tax expense$55
 $49
 $47

A reconciliation of the federal statutory income rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
 2017 2016 2015
      
Federal statutory income tax rate35 % 35% 35%
Effects of ratemaking
 1
 1
Effect of tax rate change(1) 
 
Other
 1
 
Effective income tax rate34 % 37% 36%

The net deferred income tax liability consists of the following as of December 31 (in millions):
 2017 2016
Deferred income tax assets:   
Regulatory liabilities$67
 $16
Federal net operating loss and credit carryforwards10
 25
Employee benefit plans10
 22
Capital and financial leases7
 12
Customer Advances7
 9
Commodity derivative contract
 5
Other6
 6
Total deferred income tax assets107
 95
    
Deferred income tax liabilities:   
Property related items(349) (562)
Regulatory assets(74) (124)
Capital and financial leases(7) (12)
Other(7) (14)
Total deferred income tax liabilities(437) (712)
Net deferred income tax liability$(330) $(617)


The following table provides Sierra Pacific's federal net operating loss and tax credit carryforwards and expiration dates as of December 31, 2017 (in millions):
Net operating loss carryforwards$18
Deferred income taxes on federal net operating loss carryforwards$4
Expiration dates2033
  
Other tax credits$6
Expiration dates2021 - 2032

The United States federal jurisdiction is the only significant income tax jurisdiction for NV Energy. In July 2012, the United States Internal Revenue Service and the Joint Committee on Taxation concluded their examination of NV Energy with respect to its United States federal income tax returns for December 31, 2005 through December 31, 2008.

(10)    Related Party Transactions

Sierra Pacific has an intercompany administrative services agreement with BHE and its subsidiaries. Amounts charged to Sierra Pacific under this agreement totaled $1 million for the year ended December 31, 2017, 2016 and 2015.

Sierra Pacific provided electricity to Nevada Power of $21 million, $17 million and $2 million for the years ended December 31, 2017, 2016 and 2015, respectively. Receivables associated with these transactions were $- million and $12 million as of December 31, 2017 and 2016. Sierra Pacific purchased electricity from Nevada Power of $104 million, $78 million and $69 million for the years ended December 31, 2017, 2016 and 2015, respectively. Payables associated with these transactions were $10 million and $45 million as of December 31, 2017 and 2016, respectively.

Sierra Pacific incurs intercompany administrative and shared facility costs with NV Energy and Nevada Power. These transactions are governed by an intercompany service agreement and are priced at cost. NV Energy provided services to Sierra Pacific of $5 million, $5 million and $6 million for the years ending December 31, 2017, 2016 and 2015, respectively. Sierra Pacific provided services to Nevada Power of $17 million, $14 million, and $16 million for the years ended December 31, 2017, 2016 and 2015, respectively. Nevada Power provided services to Sierra Pacific of $27 million, $24 million, and $22 million for the years ended December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017 and 2016, Sierra Pacific's Consolidated Balance Sheets included amounts due to NV Energy of $17 million and $18 million, respectively. There were no receivables due from NV Energy as of December 31, 2017 and 2016. As of December 31, 2017 and 2016, Sierra Pacific's Consolidated Balance Sheets included payables due to Nevada Power of $5 million and $4 million, respectively. There were no receivables due from Nevada Power as of December 31, 2017 and 2016.

Sierra Pacific is party to a tax-sharing agreement with NV Energy and NV Energy is part of the Berkshire Hathaway consolidated United States federal income tax return. There were no federal income taxes payable to NV Energy as of December 31, 2017 and 2016. No cash payments were made for federal income taxes for the years ended December 31, 2017, 2016 and 2015.

Certain disbursements for accounts payable and payroll are made by NV Energy on behalf of Sierra Pacific and reimbursed automatically when settled by the bank. These amounts are recorded as accounts payable at the time of disbursement.

(11)    Retirement Plan and Postretirement Benefits

Sierra Pacific is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Sierra Pacific. Sierra Pacific contributed $1 million, $27 million and $- million to the Qualified Pension Plan for the year ended December 31, 2017, 2016 and 2015, respectively. For the Other Postretirement Plans, Sierra Pacific contributed $4 million, $1 million and $- million for the year ended December 31, 2017, 2016 and 2015, respectively. Sierra Pacific contributed $1 million, $- million and $- million to the Non-Qualified Pension Plans for the year ended December 31, 2017, 2016 and 2015, respectively. Amounts attributable to Sierra Pacific were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net.

Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following as of December 31(in millions):
 2017 2016
Qualified Pension Plan -   
Other long-term liabilities$(2) $(12)
    
Non-Qualified Pension Plans:   
Other current liabilities(1) (1)
Other long-term liabilities(8) (9)
    
Other Postretirement Plans -   
Other long-term liabilities(20) (28)

(12)    Asset Retirement Obligations

Sierra Pacific estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.

Sierra Pacific does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on certain generation, transmission, distribution and other assets cannot currently be estimated, and no amounts are recognized on the Consolidated Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. These accruals totaled $211 million and $205 million as of December 31, 2017 and 2016, respectively.

The following table presents Sierra Pacific's ARO liabilities by asset type as of December 31 (in millions):
 2017 2016
    
Asbestos$5
 $4
Evaporative ponds and dry ash landfills2
 3
Other3
 3
Total asset retirement obligations$10
 $10

The following table reconciles the beginning and ending balances of Sierra Pacific's ARO liabilities for the years ended December 31 (in millions):
 2017 2016
    
Beginning balance$10
 $10
Retirements
 
Ending balance$10
 $10
    
Reflected as:   
Other current liabilities$
 $
Other long-term liabilities10
 10
 $10
 $10


Certain of Sierra Pacific's decommissioning and reclamation obligations relate to jointly-owned facilities, and as such, Sierra Pacific is committed to pay a proportionate share of the decommissioning or reclamation costs. In the event of a default by any of the other joint participants, the respective subsidiary may be obligated to absorb, directly or by paying additional sums to the entity, a proportionate share of the defaulting party's liability. Sierra Pacific's estimated share of the decommissioning and reclamation obligations are primarily recorded as ARO liabilities in other long-term liabilities on the Consolidated Balance Sheets.

(13)Commitments and Contingencies


Environmental Laws and Regulations


Sierra Pacific is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Sierra Pacific's current and future operations. Sierra Pacific believes it is in material compliance with all applicable laws and regulations.


Legal Matters


Sierra Pacific is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Sierra Pacific does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Sierra Pacific is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts.


Commitments


Sierra Pacific has the following firm commitments that are not reflected on the Consolidated Balance Sheet. Minimum payments as of December 31, 20172020 are as follows (in millions):
2026 and
20212022202320242025ThereafterTotal
Contract type:
Fuel, capacity and transmission contract commitments$327 $186 $98 $95 $96 $940 $1,742 
Fuel and capacity contract commitments (not commercially operable)35 36 36 36 637 786 
Easements30 40 
Maintenance, service and other contracts20 
Total commitments$344 $230 $138 $134 $135 $1,607 $2,588 
           2023 and  
 2018 2019 2020 2021 2022 Thereafter Total
Contract type:             
Fuel, capacity and transmission contract commitments$200
 $155
 $114
 $74
 $71
 $515
 $1,129
Fuel and capacity contract commitments (not commercially operable)
 7
 17
 22
 22
 590
 658
Operating leases and easements4
 4
 4
 3
 2
 54
 71
Maintenance, service and other contracts6
 6
 6
 7
 5
 12
 42
Total commitments$210
 $172
 $141
 $106
 $100
 $1,171
 $1,900


Fuel and Capacity Contract Commitments


Purchased Power


Sierra Pacific has several contracts for long-term purchase of electric energy which have been approved by the PUCN. The expiration of these contracts range from 20182022 to 2045. Purchased power includes estimated payments for contracts which meet the definition of a lease.lease and payments are based on the amount of energy expected to be generated. See Note 5 for further discussion of Sierra Pacific's operating and maintenance expense for purchase power contracts which met the lease criteria for 2017, 2016 and 2015 were $74 million, $69 million and $65 million, respectively, and are recorded as cost of fuel, energy and capacity on the Consolidated Statements of Operations.commitments.



403


Coal and Natural Gas
    
Sierra Pacific has a long-term contract for the transport of coal that expires in 2018.2021. Additionally, gas transportation contracts expire from 20192022 to 2046 and the gas supply contracts expire from 20182021 to 2019.2022.


Operating Leases    Fuel and EasementsCapacity Contract Commitments - Not Commercially Operable


Sierra Pacific has non-cancelable operating leases primarilyseveral contracts for office equipment, office space, certain operating facilities, vehicleslong-term purchase of electric energy in which the facility remains under development. Amounts represent the estimated payments under renewable energy power purchase contracts, which have been approved by the PUCN and land. These leases generally require are contingent upon the developers obtaining commercial operation and their ability to deliver power.

    Easements

Sierra Pacific to pay for insurance, taxes and maintenance applicable to the leased property. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. Sierra Pacific also has non-cancelable easements for land. Operating and maintenance expense on non-cancelable operating leases and easements totaled $4 million, $6 million and $7$2 million for the year-endedyears-ended December 31, 2017, 20162020, 2019 and 2015, respectively.2018.


Maintenance, Service and Other Contracts


Sierra Pacific has long-term service agreements for the performance of maintenance on generation units. Obligation amounts are based on estimated usage. The estimated expiration of these service agreements range from 20192023 to 2039.2025.


(14)    Revenues from Contracts with Customers

The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 17, for the years ended December 31 (in millions):
202020192018
ElectricNatural GasTotalElectricNatural GasTotalElectricNatural GasTotal
Customer Revenue:
Retail:
Residential$273 $76 $349 $268 $76 $344 $267 $67 $334 
Commercial233 29 262 245 30 275 246 25 271 
Industrial170 179 186 10 196 177 185 
Other
Total fully bundled681 114 795 705 117 822 696 101 797 
Distribution only service
Total retail685 114 799 709 117 826 700 101 801 
Wholesale, transmission and other50 50 57 57 48 48 
Total Customer Revenue735 114 849 766 117 883 748 101 849 
Other revenue
Total revenue$738 $116 $854 $770 $119 $889 $752 $103 $855 

404


(15)Supplemental Cash Flow Disclosures


Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, consist of funds restricted by the PUCN for a certain renewable energy contract. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, as presented in the Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Balance Sheets (in millions):
As of
December 31,December 31,
20202019
Cash and cash equivalents$19 $27 
Restricted cash and cash equivalents included in other current assets
Total cash and cash equivalents and restricted cash and cash equivalents$26 $32 

The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202020192018
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$42 $41 $41 
Income taxes paid$$37 $19 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$17 $18 $15 

(16)    Related Party Transactions

Sierra Pacific has an intercompany administrative services agreement with BHE and its subsidiaries. Amounts charged to Sierra Pacific under this agreement totaled $1 million for the years ended December 31, 2020, 2019 and 2018.

Sierra Pacific provided electricity to Nevada Power of $34 million, $25 million and $28 million for the years ended December 31, 2020, 2019 and 2018, respectively. Receivables associated with these transactions were $1 million as of December 31, 2020 and 2019. Sierra Pacific purchased electricity from Nevada Power of $106 million, $84 million and $91 million for the years ended December 31, 2020, 2019 and 2018, respectively. Payables associated with these transactions were $13 million and $5 million as of December 31, 2020 and 2019, respectively.

Sierra Pacific incurs intercompany administrative and shared facility costs with NV Energy and Nevada Power. These transactions are governed by an intercompany service agreement and are priced at cost. NV Energy provided services to Sierra Pacific of $5 million, $4 million and $4 million for the years ending December 31, 2020, 2019 and 2018, respectively. Sierra Pacific provided services to Nevada Power of $15 million, $14 million, and $15 million for the years ended December 31, 2020, 2019 and 2018, respectively. Nevada Power provided services to Sierra Pacific of $26 million, $26 million, and $28 million for the years ended December 31, 2020, 2019 and 2018, respectively. As of December 31, 2020 and 2019, Sierra Pacific's Balance Sheets included amounts due to NV Energy of $17 million and $15 million, respectively. There were 0 receivables due from NV Energy as of December 31, 2020 and 2019. As of December 31, 2020 and 2019, Sierra Pacific's Balance Sheets included payables due to Nevada Power of $2 million and $3 million, respectively. There were 0 receivables due from Nevada Power as of December 31, 2020 and 2019.

Sierra Pacific is party to a tax-sharing agreement with NV Energy and NV Energy is part of the Berkshire Hathaway consolidated United States federal income tax return. As of December 31, 2020 and 2019 federal income taxes receivable from NV Energy were $7 million and $14 million, respectively. Sierra Pacific made cash payments of $2 million, $37 million, and $19 million for federal income taxes for the years ended December 31, 2020, 2019 and 2018, respectively.
405


 2017 2016 2015
      
Supplemental disclosure of cash flow information -     
Interest paid, net of amounts capitalized$40
 $47
 $54
      
Supplemental disclosure of non-cash investing and financing transactions:     
Accruals related to property, plant and equipment additions$10
 $15
 $24
Capital and financial lease obligations incurred$1
 $
 $13
Certain disbursements for accounts payable and payroll are made by NV Energy on behalf of Sierra Pacific and reimbursed automatically when settled by the bank. These amounts are recorded as accounts payable at the time of disbursement.


(15)(17)Segment Information


Sierra Pacific has identified two2 reportable operating segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by the PUCN; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance.

Sierra Pacific believes presenting gross margin allows the reader to assess the impact of Sierra Pacific's regulatory treatment and its overall regulatory environment on a consistent basis and is meaningful. Gross margin is calculated as operating revenue less cost of fuel, energy and capacity and natural gas purchased for resale ("cost of sales").



The following tables provide information on a reportable segment basis (in millions):
Years Ended December 31,
202020192018
Operating revenue:
Regulated electric$738 $770 $752 
Regulated natural gas116 119 103 
Total operating revenue$854 $889 $855 
Operating income:
Regulated electric$147 $150 $136 
Regulated natural gas18 21 16 
Total operating income165 171 152 
Interest expense(56)(48)(44)
Allowance for borrowed funds
Allowance for equity funds
Other, net11 
Income before income tax expense$126 $131 $122 

As of December 31,
202020192018
Assets
Regulated electric$3,540 $3,319 $3,177 
Regulated natural gas342 308 314 
Regulated common assets(1)
37 44 78 
Total assets$3,919 $3,671 $3,569 

(1)    Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

406


Eastern Energy Gas Holdings, LLC and its subsidiaries
Consolidated Financial Section
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Item 6.Selected Financial Data

Information required by Item 6 is omitted pursuant to General Instruction I(2)(a) to Form 10-K.

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is management's discussion and analysis of certain significant factors that have affected the consolidated financial condition and results of operations of Eastern Energy Gas during the periods included herein. This discussion should be read in conjunction with Eastern Energy Gas' historical Consolidated Financial Statements and Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. Eastern Energy Gas' actual results in the future could differ significantly from the historical results.

Results of Operations

Overview

Net income attributable to Eastern Energy Gas for the year ended December 31, 2020 was $109 million, a decrease of $612 million, or 85%, compared to 2019, primarily due to a charge associated with the probable abandonment of a project previously intended for EGTS to provide approximately 1,500,000 Dths of firm transportation service to various customers in connection with the Atlantic Coast Pipeline project ("Supply Header Project") of $463 million, a charge for cash flow hedges of debt-related items that are probable of not occurring as a result of the GT&S Transaction of $141 million, the absence of interest income from Cove Point's notes receivable from DEI of $82 million, a charge for disallowance of capitalized AFUDC due to the resolution of EGTS' 2015 FERC audit of $43 million and an increase in net income attributable to noncontrolling interests due to DEI's 50% interest in Cove Point effective with the GT&S Transaction of $39 million. These decreases are partially offset by the absence of interest expense of $100 million from Cove Point's term loan borrowings and income tax benefit of $24 million in 2020 versus income tax expense of $101 million in 2019, primarily due to lower pre-tax income.

Net income attributable to Eastern Energy Gas for the year ended December 31, 2019 was $721 million, an increase of $240 million, or 50%, compared to 2018, primarily due to the absence of a charge for disallowance of FERC-regulated plant, the commercial operations of the Liquefaction Facility for the entire year, the absence of a write-off associated with a project to provide 150,000 Dths per day of transportation service to help meet demand for natural gas for Washington Gas Light Company ("Eastern Market Access Project") and the absence of an impairment charge on certain gathering and processing assets included in discontinued operations. These increases were partially offset by the absence of gains related to agreements to convey shale development rights under natural gas storage fields and a charge related to a voluntary retirement program.

Year Ended December 31, 2020 Compared to Year Ended December 31, 2019

Operating revenue decreased $79 million, or 4%, for 2020 compared to 2019 primarily due to:
$55 million decrease in services performed for Atlantic Coast Pipeline, which is offset in operations and maintenance expense;
$45 million from the absence of Questar Pipeline Group operations from the date of the GT&S Transaction;
$18 million from the absence of EGTS contract changes; and
$14 million decrease in services provided to affiliates.

The decrease in operating revenue was offset by:
$35 million increase in regulated gas sales primarily due to increased volumes; and
$23 million from the absence of credits associated with the start-up phase of the Liquefaction Facility.

Cost of (excess) gas increased $15 million, or 167% for 2020 compared to 2019 primarily due to an increase in volumes sold.


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Operations and maintenance increased $394 million, or 53%, for 2020 compared to 2019 primarily due to a charge associated with the probable abandonment of the Supply Header Project of $463 million, a charge for disallowance of capitalized AFUDC due to the resolution of EGTS' 2015 FERC audit of $43 million and the write-off of certain items in connection with the GT&S Transaction of $17 million, partially offset by a decrease in services performed for Atlantic Coast Pipeline of $55 million, the absence of a charge related to a voluntary retirement program of $39 million, a decrease in services provided by affiliates of $16 million, the absence of a charge related to the abandonment of the Sweden Valley project of $13 million and the absence of Questar Pipeline Group operations from the date of the GT&S Transaction of $7 million.

Depreciation and amortization decreased $1 million for 2020 compared to 2019 primarily due to the absence of Questar Pipeline Group from the date of the GT&S Transaction of $8 million, partially offset by higher plant placed in service of $7 million.

Property and other taxes decreased $1 million, or 1%, for 2020 compared to 2019 primarily due to the absence of Questar Pipeline Group operations from the date of the GT&S Transaction.

Other income (expense) is unfavorable $(66) million, or 46%, for 2020 compared to 2019 primarily due to a charge for cash flow hedges of debt-related items that are probable of not occurring as a result of the GT&S Transaction of $141 million, the absence of interest income from Cove Point's notes receivable from DEI of $82 million and interest expense on Eastern Energy Gas' November 2019 senior note issuance of $23 million, partially offset by the absence of interest expense of $100 million from Cove Point's term loan borrowings, the absence of interest expense from intercompany borrowings as a result of the Dominion Energy Gas Restructuring of $38 million and interest income from DEI of $27 million and the East Ohio Gas Company of $20 million.

Income tax (benefit) expense decreased $125 million for 2020 compared to 2019. The effective tax rate was (12)% in 2020 and 13% in 2019. The effective tax rate decreased primarily due to the impact of lower pre-tax income of $552 million driven by charges associated with the Supply Header Project, partially offset by the effects of the changes in tax status in connection with the Dominion Energy Gas Restructuring of $24 million.

Net income attributable to noncontrolling interests increased $43 million, or 36% for 2020 compared to 2019, primarily due to DEI's 50% interest in Cove Point effective with the GT&S Transaction.

Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

Operating revenue increased $173 million, or 9%, for 2019 compared to 2018 primarily due to:
$257 million increase from the Liquefaction Facility, including terminalling services provided to ST Cove Point, LLC, a joint venture of Sumitomo Corporation and Tokyo Gas Co., LTD. and GAIL Global (USA) LNG, LLC (the "Export Customers") of $190 million, a decrease in credits associated with the start-up phase of $44 million and regulated gas transportation contracts to serve the Export Customers of $23 million; and
$18 million increase from EGTS contract changes.

The increase in operating revenue was offset by:
$99 million decrease in services performed for Atlantic Coast Pipeline, which is offset in operations and maintenance expense; and
$16 million decrease in regulated gas sales primarily due to decreased volumes.

Cost of (excess) gas increased $15 million for 2019 compared to 2018 primarily due to an increase in purchased gas largely due to unfavorable prices of $56 million, partially offset by decreased volumes of $38 million.

Operations and maintenance decreased $26 million, or 3%, for 2019 compared to 2018 primarily due to:
The absence of a charge for disallowance of FERC-regulated plant of $127 million;
$99 million decrease in services performed for Atlantic Coast Pipeline; and
The absence of a write-off associated with the Eastern Market Access Project of $37 million.
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The decrease in operations and maintenance was offset by:
The absence of gains related to agreements to convey shale development rights under natural gas storage fields of $115 million;
$45 million increase in operating expenses from the commercial operations of the Liquefaction Facility and costs associated with regulated gas transportation contracts to serve the Export Customers;
$39 million charge related to a voluntary retirement program;
The abandonment of the Sweden Valley project of $13 million; and
$10 million increase in salaries, wages and benefits and general administrative expenses.

Depreciation and amortization increased $34 million, or 10%, for 2019 compared to 2018 primarily due to higher plant placed in service, including the Liquefaction Facility.

Property and other taxes increased $33 million, or 31%, for 2019 compared to 2018 primarily due to property taxes associated with the Liquefaction Facility.

Other income (expense) is unfavorable $60 million, or 71%, for 2019 compared to 2018 primarily due to Cove Point's term loan borrowing of $78 million, the absence of capitalization of interest expense associated with the Liquefaction Facility upon completion of construction of $46 million and higher interest expense due to increased affiliate borrowings of $10 million, partially offset by interest income from Cove Point's promissory notes receivable from DEI issued in 2018 of $61 million.

Income tax expense decreased $23 million, or 19%, for 2019 compared to 2018. The effective tax rate was 13% in 2019 and 18% in 2018. The effective tax rate decreased primarily due to the impacts of changes in tax status of certain subsidiaries in connection with the Dominion Energy Gas Restructuring of $48 million, partially offset by reductions in noncontrolling interest of $9 million and the absence of a state legislative change of $15 million.

Net income attributable to noncontrolling interests decreased $54 million, or 31%, for 2019 compared to 2018 primarily due to the acquisition of the public interest in Northeast Midstream Partners, LP (formerly known as Dominion Energy Midstream Partners, LP) in 2019.

Liquidity and Capital Resources

As of December 31, 2020, Eastern Energy Gas' total net liquidity was $426 million as follows (in millions):
Cash and cash equivalents$35 
Intercompany credit agreement(1)
400 
Less:
Note payable to affiliate
Net intercompany credit agreement391 
Total net liquidity$426 
Intercompany credit agreement:
Maturity date2021

(1)Refer to Note 22 of Notes to Financial Statements in Item 8 of this Form 10-K for further discussion regarding Eastern Energy Gas' intercompany credit agreement.
Operating Activities

Net cash flows from operating activities for the years ended December 31, 2020 and 2019 were $1.3 billion and $1.1 billion, respectively. The change was primarily due to changes in working capital offset by the settlement of interest rate swaps.

Net cash flows from operating activities for the years ended December 31, 2019 and 2018 were $1.1 billion and $1.2 billion, respectively. The change was primarily due to changes in working capital.
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The timing of Eastern Energy Gas' income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods elected and assumptions for each payment date.

Investing Activities

Net cash flows from investing activities for the years ended December 31, 2020 and 2019 were $3.1 billion and $1.2 billion, respectively. The change was primarily due to the absence of loans to affiliates of $1.9 billion and lower capital expenditures of $330 million, partially offset by lower repayments of loans by affiliates of $326 million.

Net cash flows from investing activities for the years ended December 31, 2019 and 2018 were $1.2 billion and $(4.0) billion, respectively. The change was primarily due to repayments of loans by affiliates of $3.7 billion, the decrease in loans to affiliates of $1.1 billion and lower capital expenditures of $405 million.

Financing Activities

Net cash flows from financing activities for the year ended December 31, 2020 were $(4.3) billion. Sources of cash totaled $1.2 billion and consisted of proceeds from equity contributions, that included a contribution from its indirect parent BHE to Eastern Energy Gas to repay its $700 million of debt. Uses of cash totaled $5.5 billion and consisted mainly of distributions of $4.5 billion, repayments of long-term debt of $700 million and net repayments of affiliated current borrowings of $251 million as required by the GT&S Transaction.

Net cash flows from financing activities for the year ended December 31, 2019 were $(2.4) billion. Sources of cash totaled $5.3 billion and consisted mainly of proceeds from equity contributions of $3.4 billion and proceeds from long-term debt issuances of $1.9 billion. Uses of cash totaled $7.7 billion and consisted mainly of repayments of long-term debt of $4.1 billion, net repayments of affiliated current borrowings of $2.8 billion and distributions of $636 million.

Net cash flows from financing activities for the year ended December 31, 2018 were $3.0 billion. Sources of cash totaled $4.2 billion and consisted mainly of proceeds from long-term debt issuances of $3.8 billion and net issuances of affiliated current borrowings of $291 million. Uses of cash totaled $1.2 billion and consisted mainly of repayments of short-term debt of $619 million, distributions of $296 million and repayments of long-term debt of $251 million.

Short-term Debt

As of December 31, 2020, Eastern Energy Gas had $9 million of an outstanding note payable to an affiliate at a weighted average interest rate of 0.55%. As of December 31, 2019, Eastern Energy Gas had $62 million of commercial paper outstanding at a weighted average interest rate of 1.98%, $251 million of borrowings under an intercompany revolving credit agreement at a weighted average interest rate of 2.02% and DCP had $9 million of borrowing with Dominion Energy Services, Inc. with a weighted-average interest rate of 3.85%. For further discussion, refer to Note 9 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Long-term Debt

Eastern Energy Gas made repayments on long-term debt totaling $700 million and $4.1 billion during the years ended December 31, 2020 and 2019, respectively.

Future Uses of Cash

Capital Expenditures

Capital expenditure needs are reviewed regularly by management and may change significantly as a result of these reviews, which may consider, among other factors, changes in environmental and other rules and regulations; impacts to customers' rates; outcomes of regulatory proceedings; changes in income tax laws; general business conditions; system reliability standards; the cost and efficiency of construction labor, equipment and materials; commodity prices; and the cost and availability of capital. Expenditures for certain assets may ultimately include acquisition of existing assets.


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Historical and forecasted capital expenditures, each of which exclude amounts for non-cash equity AFUDC and other non-cash items, for the years ending December 31 are as follows (in millions):
HistoricalForecast
2018(1)
2019(1)
2020202120222023
Natural gas transmission and storage$314 $105 $112 $44 $93 $135 
Other437 289 262 417 310 292 
Total$751 $394 $374 $461 $403 $427 

(1)Excludes capital expenditures related to entities disposed of in connection with the Dominion Energy Gas Restructuring. Refer to Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion.

Eastern Energy Gas' natural gas transmission and storage capital expenditures primarily include growth capital expenditures related to planned regulated projects. Eastern Energy Gas' other capital expenditures consist primarily of non-regulated and routine capital expenditures for natural gas transmission, storage and liquefied natural gas terminalling infrastructure needed to serve existing and expected demand.

Contractual Obligations

Eastern Energy Gas has contractual cash obligations that may affect its financial condition. The following table summarizes Eastern Energy Gas' material contractual cash obligations as of December 31, 2020 (in millions):
Payments Due by Periods
2022-2024-2026 and
202120232025AfterTotal
Long-term debt$500 $650 $1,050 $2,255 $4,455 
Interest payments on long-term debt(1)
148 275 205 1,176 1,804 
Operating and finance lease liabilities10 15 35 
Interest payments on operating and finance lease liabilities(1)
10 
Natural gas supply and transportation(1)
41 82 41 — 164 
Other(1)
19 
Total contractual cash obligations$701 $1,027 $1,304 $3,455 $6,487 

(1)Not reflected on the Consolidated Balance Sheets.

Eastern Energy Gas has other types of commitments that relate to construction and other development costs (Liquidity and Capital Resources included within this Item 7 and Note 9), uncertain tax positions (Note 11) and AROs (Note 13), which have not been included in the above table because the amount and timing of the cash payments are not certain. Refer, where applicable, to the respective referenced note in Notes to Consolidated Financial Statements in Item 8 of this Form 10‑K for additional information.

Regulatory Matters

Eastern Energy Gas is subject to comprehensive regulation. Refer to the discussion contained in Item 1 of this Form 10-K for further information regarding Eastern Energy Gas' general regulatory framework and current regulatory matters.

Environmental Laws and Regulations

Eastern Energy Gas is subject to federal, state and local laws and regulations regarding climate change, air and water quality, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. In addition to imposing continuing compliance obligations and capital expenditure requirements, these laws and regulations provide regulators with the authority to levy substantial penalties for noncompliance, including fines, injunctive relief and other sanctions. These laws and regulations are administered by various federal, state and local agencies. Eastern Energy Gas believes it is in material compliance with all applicable laws and regulations, although many laws and regulations are subject to interpretation that may ultimately be resolved by the courts. Refer to "Environmental Laws and Regulations" in Item 1 of this Form 10-K for further discussion regarding environmental laws and regulations.
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Collateral and Contingent Features

Debt of Eastern Energy Gas is rated by credit rating agencies. Assigned credit ratings are based on each rating agency's assessment of Eastern Energy Gas' ability to, in general, meet the obligations of its issued debt. The credit ratings are not a recommendation to buy, sell or hold securities, and there is no assurance that a particular credit rating will continue for any given period of time.

Eastern Energy Gas has no credit rating downgrade triggers that would accelerate the maturity dates of outstanding debt, and a change in ratings is not an event of default under the applicable debt instruments.

Off-Balance Sheet Arrangements

Eastern Energy Gas has certain investments that are accounted for under the equity method in accordance with GAAP. Accordingly, an amount is recorded on Eastern Energy Gas' Consolidated Balance Sheets as an equity investment and is increased or decreased for Eastern Energy Gas' pro-rata share of earnings or losses, respectively, less any dividends from such investments.

As of December 31, 2020, Eastern Energy Gas' investments that are accounted for under the equity method had short- and long-term debt of $314 million and an unused revolving credit facility of $10 million. As of December 31, 2020, Eastern Energy Gas' pro-rata share of such short- and long-term debt was $157 million and unused revolving credit facility was $5 million. The entire amount of Eastern Energy Gas' pro-rata share of the outstanding short- and long-term debt and unused revolving credit facility is non-recourse to Eastern Energy Gas. Although Eastern Energy Gas is generally not required to support debt service obligations of its equity investees, default with respect to this non-recourse short- and long-term debt could result in a loss of invested equity.

Critical Accounting Estimates

Certain accounting measurements require management to make estimates and judgments concerning transactions that will be settled several years in the future. Amounts recognized on the Consolidated Financial Statements based on such estimates involve numerous assumptions subject to varying and potentially significant degrees of judgment and uncertainty and will likely change in the future as additional information becomes available. The following critical accounting estimates are impacted significantly by Eastern Energy Gas' methods, judgments and assumptions used in the preparation of the Consolidated Financial Statements and should be read in conjunction with Eastern Energy Gas' Summary of Significant Accounting Policies included in Eastern Energy Gas' Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

Accounting for the Effects of Certain Types of Regulation

Eastern Energy Gas prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Eastern Energy Gas defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

Eastern Energy Gas continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Eastern Energy Gas' ability to recover its costs. Eastern Energy Gas believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as AOCI. Total regulatory assets were $82 million and total regulatory liabilities were $709 million as of December 31, 2020. Refer to Eastern Energy Gas' Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Eastern Energy Gas' regulatory assets and liabilities.


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Impairment of Goodwill and Long-Lived Assets

Eastern Energy Gas' Consolidated Balance Sheet as of December 31, 2020 includes goodwill of acquired businesses of $1.3 billion. Eastern Energy Gas evaluates goodwill for impairment at least annually. Prior to the GT&S Transaction, Eastern Energy Gas evaluated goodwill for impairment as of April 1. As a result of the GT&S Transaction, Eastern Energy Gas will complete its annual reviews as of October 31 to align with BHE's policy. Eastern Energy Gas completed its evaluation of goodwill for impairment April 1 and October 31, 2020. Additionally, no indicators of impairment were identified as of December 31, 2020. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. Eastern Energy Gas uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings; and an appropriate discount rate. Estimated future cash flows are impacted by, among other factors, growth rates, changes in regulations and rates, ability to renew contracts and estimates of future commodity prices. In estimating future cash flows, Eastern Energy Gas incorporates current market information, as well as historical factors. Refer to Note 3 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Eastern Energy Gas' goodwill.

Eastern Energy Gas evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. The impacts of regulation are considered when evaluating the carrying value of regulated assets.

The estimate of cash flows arising from the future use of the asset that are used in the impairment analysis requires judgment regarding what Eastern Energy Gas would expect to recover from the future use of the asset. Changes in judgment that could significantly alter the calculation of the fair value or the recoverable amount of the asset may result from significant changes in the regulatory environment, the business climate, management's plans, legal factors, market price of the asset, the use of the asset or the physical condition of the asset, future market prices, competition and many other factors over the life of the asset. Any resulting impairment loss is highly dependent on the underlying assumptions and could significantly affect Eastern Energy Gas' results of operations.

Income Taxes

In determining Eastern Energy Gas' income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the FERC. Eastern Energy Gas' income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Eastern Energy Gas recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Eastern Energy Gas' federal, state and local income tax examinations is uncertain, Eastern Energy Gas believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Eastern Energy Gas' consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations. Refer to Eastern Energy Gas' Note 11 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Eastern Energy Gas' income taxes.

It is probable that Eastern Energy Gas will pass income tax benefits and expense related to the federal tax rate change from 35% to 21% as a result of 2017 Tax Reform, certain property-related basis differences and other various differences on to their customers. As of December 31, 2020, these amounts were recognized as a net regulatory liability of $473 million and are expected to be reflected in regulated rates.

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Item 7A.Quantitative and Qualitative Disclosures About Market Risk

Eastern Energy Gas' Consolidated Balance Sheets include assets and liabilities with fair values that are subject to market risks. Eastern Energy Gas' significant market risks are primarily associated with commodity prices, interest rates, foreign currency and the extension of credit to counterparties with which Eastern Energy Gas transacts. The following discussion addresses the significant market risks associated with Eastern Energy Gas' business activities. Eastern Energy Gas has established guidelines for credit risk management. Refer to Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding Eastern Energy Gas' contracts accounted for as derivatives.

Commodity Price Risk

Eastern Energy Gas is exposed to the impact of market fluctuations in commodity prices. Eastern Energy Gas is principally exposed to natural gas market fluctuations primarily through fuel retained and used during the operation of the pipeline system as well as lost and unaccounted for gas. Eastern Energy Gas is exposed to the risk of fuel retention, meaning customers have a fixed fuel retention percentage assessed on transportation and storage quantities, and the pipeline bears the risk of under-recovery and benefits from any over-recovery of volumes. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, facility availability, customer usage, storage and transportation constraints. Eastern Energy Gas does not engage in proprietary trading activities. To mitigate a portion of its commodity price risk, Eastern Energy Gas uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply quantities or sell future supply quantities generally at fixed prices. Eastern Energy Gas does not hedge all of its commodity price risk, thereby exposing the unhedged portion to changes in market prices.

Interest Rate Risk

Eastern Energy Gas is exposed to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances. Eastern Energy Gas manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. As a result of the fixed interest rates, Eastern Energy Gas' fixed-rate long-term debt does not expose Eastern Energy Gas to the risk of loss due to changes in market interest rates. Additionally, because fixed-rate long-term debt is not carried at fair value on the Consolidated Balance Sheets, changes in fair value would impact earnings and cash flows only if Eastern Energy Gas were to reacquire all or a portion of these instruments prior to their maturity. The nature and amount of Eastern Energy Gas' short- and long-term debt can be expected to vary from period to period as a result of future business requirements, market conditions and other factors. Refer to Notes 9 and 10 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional discussion of Eastern Energy Gas' short- and long-term debt.

As of December 31, 2020 and 2019, Eastern Energy Gas had short- and long-term variable-rate obligations totaling $509 million and $822 million, respectively, that expose Eastern Energy Gas to the risk of increased interest expense in the event of increases in short-term interest rates. If variable interest rates were to increase by 10% from December 31 levels, it would not have a material effect on Eastern Energy Gas' annual interest expense. The carrying value of the variable-rate obligations approximates fair value as of December 31, 2020 and 2019.

Eastern Energy Gas also uses interest rate derivatives, including forward starting swaps, interest rate swaps and interest rate lock agreements to manage interest rate risk. As of December 31, 2020 and 2019, Eastern Energy Gas had $500 million and $1.3 billion, respectively, in aggregate notional amounts of these interest rate swaps outstanding. A hypothetical 10% decrease in market interest rates would not have a material effect on the fair value of Eastern Energy Gas' interest rate swaps as of December 31, 2020 and would have resulted in a decrease of $17 million in the fair value of Eastern Energy Gas' interest rate derivatives as of December 31, 2019.

Eastern Energy Gas holds foreign currency swaps with the purpose of hedging the foreign currency exchange risk associated with Euro denominated debt. As of December 31, 2020 and 2019, Eastern Energy Gas had €250 million in aggregate notional amounts of these foreign currency swaps outstanding. A hypothetical 10% decrease in market interest rates would not have resulted in a material decrease in fair value of Eastern Energy Gas' foreign currency swaps as of December 31, 2020 and 2019.

The impact of a change in interest rates on the Eastern Energy Gas' interest rate-based financial derivative instruments at a point in time is not necessarily representative of the results that will be realized when the contracts are ultimately settled. Net gains and/or losses from interest rate derivative instruments used for hedging purposes, to the extent realized, will generally be offset by recognition of the hedged transaction.

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Credit Risk

Eastern Energy Gas is exposed to counterparty credit risk associated with natural gas transportation and storage service contracts with utilities, natural gas producers, power generators, industrials, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Eastern Energy Gas' counterparties have similar economic, industry or other characteristics and due to direct and indirect relationships among the counterparties. Before entering into a transaction, Eastern Energy Gas analyzes the financial condition of each wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate counterparty credit risk, Eastern Energy Gas obtains third-party guarantees, letters of credit, financial guarantee bonds and cash deposits. If required, Eastern Energy Gas exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

Eastern Energy Gas' gross credit exposure for each counterparty is calculated as outstanding receivables plus any unrealized on- or off-balance sheet exposure, taking into account contractual netting rights. Gross credit exposure is calculated prior to the application of collateral. As of December 31, 2020, Eastern Energy Gas' credit exposure totaled $20 million. Of this amount, investment grade counterparties, including those internally rated, represented 100%, and no single counterparty, whether investment grade or non-investment grade, exceeded $5 million of exposure.
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Item 8.Financial Statements and Supplementary Data

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of Eastern Energy Gas Holdings, LLC

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Eastern Energy Gas Holdings, LLC and subsidiaries ("Eastern Energy Gas") as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of Eastern Energy Gas as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of Eastern Energy Gas' management. Our responsibility is to express an opinion on Eastern Energy Gas' financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to Eastern Energy Gas in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Eastern Energy Gas is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of Eastern Energy Gas' internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Assets and Liabilities - Impact of Rate Regulation on the Financial Statements —Refer to Notes 2 and 7 to the financial statements

Critical Audit Matter Description

Eastern Energy Gas, through its subsidiaries, is subject to rate regulation by the Federal Energy Regulatory Commission (the "FERC"), which has jurisdiction with respect to the rates of interstate natural gas transmission companies. Management has determined its rate regulated subsidiaries meet the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economics of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment, net; regulatory assets; regulatory liabilities; operating revenue; operations and maintenance expense; and depreciation and amortization expense; and income tax expense (benefit).


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Revenue provided by the Eastern Energy Gas interstate natural gas transmission operations is based primarily on rates approved by the FERC. Eastern Energy Gas defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur. Eastern Energy Gas continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Eastern Energy Gas' ability to recover its costs. The evaluation reflects the current political and regulatory climate. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss).

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs and (2) a refund to customers. Given that management's accounting judgments are based on assumptions about the outcome of future decisions by the FERC, auditing these judgments required specialized knowledge of the accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit
Our audit procedures related to the uncertainty of future decisions by the FERC included the following, among others:
We evaluated the Eastern Energy Gas disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.
We read relevant orders issued by the FERC, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the FERC's treatment of similar costs under similar circumstances. We evaluated the external information and compared to management's recorded regulatory assets and liability balances for completeness.
For regulatory matters in process, we inspected Eastern Energy Gas' filings with the FERC, and the filings with the FERC by intervenors that may impact Eastern Energy Gas' future rates. for any evidence that might contradict management's assertions.
We read and analyzed the minutes of the Board of Directors of Berkshire Hathaway Energy and the Board of Directors of Eastern Energy Gas, for discussions of changes in legal, regulatory, or business factors which could impact management's conclusions with respect to the impacted account balances and disclosures of rate regulation.

/s/ Deloitte & Touche LLP

Richmond, Virginia
February 26, 2021

We have served as Eastern Energy Gas' auditor since 2012.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$35 $27 
Restricted cash and cash equivalents13 12 
Trade receivables, net177 173 
Receivables from affiliates139 362 
Other receivables51 26 
Inventories119 122 
Prepayments60 73 
Other current assets62 63 
Total current assets656 858 
Property, plant and equipment, net10,144 11,727 
Goodwill1,286 1,471 
Investments244 312 
Affiliated notes receivable3,437 
Other assets291 979 
Total assets$12,621 $18,784 

The accompanying notes are an integral part of these consolidated financial statements.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)

As of December 31,
20202019
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable$71 $59 
Accounts payable to affiliates39 82 
Accrued interest19 26 
Accrued property, income and other taxes29 81 
Accrued employee expenses23 21 
Notes payable to affiliates260 
Short-term debt62 
Current portion of long-term debt500 699 
Other current liabilities124 162 
Total current liabilities814 1,452 
Long-term debt3,925 4,821 
Regulatory liabilities669 800 
Deferred income taxes1,288 
Other long-term liabilities218 194 
Total liabilities5,626 8,555 
Commitments and contingencies (Note 16)00
Equity:
Members' equity:
Membership interests2,957 9,031 
Accumulated other comprehensive loss, net(53)(187)
Total members' equity2,904 8,844 
Noncontrolling interests4,091 1,385 
Total equity6,995 10,229 
  
Total liabilities and equity$12,621 $18,784 

The accompanying notes are an integral part of these consolidated financial statements.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating revenue$2,090 $2,169 $1,996 
  
Operating expenses: 
Cost of (excess) gas24 (6)
Operations and maintenance1,142 748 774 
Depreciation and amortization366 367 333 
Property and other taxes140 141 108 
Total operating expenses1,672 1,265 1,209 
   
Operating income418 904 787 
  
Other income (expense): 
Interest expense(333)(311)(174)
Allowance for equity funds13 18 15 
Interest and dividend income67 105 26 
Other, net42 43 48 
Total other expense(211)(145)(85)
   
Income from continuing operations before income tax (benefit) expense and equity income207 759 702 
Income tax (benefit) expense(24)101 124 
Equity income42 43 54 
Net income from continuing operations273 701 632 
Net income from discontinued operations(1)
141 24 
Net income273 842 656 
Net income attributable to noncontrolling interests164 121 175 
Net income attributable to Eastern Energy Gas$109 $721 $481 
(1)Includes income tax expense of $33 million and less than $1 million for the years ended December 31, 2019 and 2018, respectively.

The accompanying notes are an integral part of these consolidated financial statements.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

Years Ended December 31,
202020192018
Net income$273 $842 $656 
 
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax of $(40), $(15) and $1894 38 (48)
Unrealized gains (losses) on cash flow hedges, net of tax of $(10), $20 and $(2)30 (56)
Total other comprehensive income (loss), net of tax124 (18)(45)
    
Comprehensive income397 824 611 
Comprehensive income attributable to noncontrolling interests154 120 175 
Comprehensive income attributable to Eastern Energy Gas$243 $704 $436 

The accompanying notes are an integral part of these consolidated financial statements.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)

Accumulated
Other
Comprehensive
PredecessorMembershipIncome (Loss),NoncontrollingTotal
EquityInterestsnetInterestsEquity
Balance, December 31, 2017$1,361 $4,261 $(98)$2,971 $8,495 
Net income180 301 — 175 656 
Other comprehensive loss— — (45)— (45)
Contributions48 — — — 48 
Distributions(133)(25)— (138)(296)
Distributions to noncontrolling interests(27)— — 27 
Adoption of ASU 2018-02— 29 (26)— 
Sale of Northeast Midstream common units-net of offering costs— — — 
Remeasurement of noncontrolling interest in Northeast Midstream375 — — (375)
Balance, December 31, 20181,804 4,566 (169)2,664 8,865 
Net income232 489 — 121 842 
Other comprehensive loss— — (17)(1)(18)
Contributions3,385 — — — 3,385 
Distributions(457)— — (179)(636)
Acquisition of public interest in Northeast Midstream1,181 — — (1,221)(40)
Dominion Energy Gas Restructuring(6,145)3,978 (1)— (2,168)
Other equity transactions— (2)— (1)
Balance, December 31, 20199,031 (187)1,385 10,229 
Net income— 109 — 164 273 
Other comprehensive income (loss)— — 134 (10)124 
Contributions— 1,223 — — 1,223 
Distributions— (4,282)— (216)(4,498)
Distribution of Questar Pipeline Group— (699)— — (699)
Distribution of 50% interest in Cove Point— (2,765)— 2,765 
Acquisition of Eastern Energy Gas by BHE— 343 — — 343 
Other equity transactions— (3)— 
Balance, December 31, 2020$— $2,957 $(53)$4,091 $6,995 

The accompanying notes are an integral part of these consolidated financial statements.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)

Years Ended December 31,
202020192018
Cash flows from operating activities:
Net income$273 $842 $656 
Adjustments to reconcile net income to net cash flows from operating activities:
Losses on other items, net531 21 273 
Depreciation and amortization366 445 424 
Allowance for equity funds(13)(18)(15)
Equity loss, net of distributions35 31 
Changes in regulatory assets and liabilities(37)(74)(64)
Deferred income taxes(5)(3)380 
Other, net23 61 30 
Changes in other operating assets and liabilities:
Trade receivables and other assets346 115 (393)
Derivative collateral, net(140)
Pension and other postretirement benefit plans(88)(139)(153)
Accrued property, income and other taxes23 (53)18 
Accounts payable and other liabilities(40)(173)22 
Net cash flows from operating activities1,274 1,062 1,191 
Cash flows from investing activities:
Capital expenditures(374)(704)(1,109)
Loans to affiliates(1,872)(2,986)
Repayment of loans by affiliates3,422 3,748 
Other, net16 (22)89 
Net cash flows from investing activities3,064 1,150 (4,006)
Cash flows from financing activities:
Proceeds from long-term debt1,895 3,750 
Repayments of long-term debt(700)(4,141)(251)
Net (repayments of) proceeds from short-term debt(62)52 (619)
(Repayment) issuance of affiliated current borrowings, net(251)(2,837)291 
Credit facility (repayments) borrowings(73)73 
Proceeds from equity contributions1,223 3,385 25 
Distributions(4,539)(636)(296)
Other, net(16)(17)
Net cash flows from financing activities(4,329)(2,371)2,956 
Net change in cash and cash equivalents and restricted cash(159)141 
Cash and cash equivalents and restricted cash at beginning of period39 198 57 
Cash and cash equivalents and restricted cash at end of period$48 $39 $198 

The accompanying notes are an integral part of these consolidated financial statements.
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EASTERN ENERGY GAS HOLDINGS, LLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)Organization and Operations

Eastern Energy Gas Holdings, LLC and its subsidiaries ("Eastern Energy Gas") is a holding company that conducts business activities consisting of Federal Energy Regulatory Commission ("FERC")-regulated interstate natural gas transportation pipeline and underground storage operations in the eastern region of the United States and operates Cove Point LNG, LP ("Cove Point"), a liquefied natural gas ("LNG") export, import and storage facility. Eastern Energy Gas owns 100% of the general partner interest and 25% of the limited partnership interest in Cove Point. In addition, Eastern Energy Gas owns a 50% noncontrolling interest in Iroquois Gas Transmission System, L.P. ("Iroquois"), a 416-mile FERC-regulated interstate natural gas transportation pipeline. On November 1, 2020, Berkshire Hathaway Energy Company ("BHE") completed its acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy, Inc. ("DEI") and Dominion Energy Questar Corporation ("Dominion Questar"), exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "Questar Pipeline Group") (the "GT&S Transaction"). As a result of the GT&S Transaction, Eastern Energy Gas became an indirect wholly owned subsidiary of BHE. BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). See Note 3 for more information regarding the GT&S Transaction.

(2)    Summary of Significant Accounting Policies

Basis of Consolidation and Presentation

The Consolidated Financial Statements include the accounts of Eastern Energy Gas and its subsidiaries in which it holds a controlling financial interest as of the financial statement date. Intercompany accounts and transactions have been eliminated.

Certain amounts in Eastern Energy Gas' 2019 and 2018 Consolidated Financial Statements and Notes have been reclassified to conform to the 2020 presentation for comparative purposes; however, such reclassifications did not affect Eastern Energy Gas' net income, total assets, liabilities, equity or cash flows.

Use of Estimates in Preparation of Financial Statements

The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. These estimates include, but are not limited to, the effects of regulation; impairment of goodwill; recovery of long-lived assets; certain assumptions made in accounting for pension and other postretirement benefits; asset retirement obligations ("AROs"); income taxes; unbilled revenue; valuation of certain financial assets and liabilities, including derivative contracts; and accounting for contingencies. Actual results may differ from the estimates used in preparing the Consolidated Financial Statements.

Accounting for the Effects of Certain Types of Regulation

Eastern Energy Gas prepares its Consolidated Financial Statements in accordance with authoritative guidance for regulated operations, which recognizes the economic effects of regulation. Accordingly, Eastern Energy Gas defers the recognition of certain costs or income if it is probable that, through the ratemaking process, there will be a corresponding increase or decrease in future regulated rates. Regulatory assets and liabilities are established to reflect the impacts of these deferrals, which will be recognized in earnings in the periods the corresponding changes in regulated rates occur.

Eastern Energy Gas continually evaluates the applicability of the guidance for regulated operations and whether its regulatory assets and liabilities are probable of inclusion in future regulated rates by considering factors such as a change in the regulator's approach to setting rates from cost-based ratemaking to another form of regulation, other regulatory actions or the impact of competition that could limit Eastern Energy Gas' ability to recover its costs. Eastern Energy Gas believes the application of the guidance for regulated operations is appropriate and its existing regulatory assets and liabilities are probable of inclusion in future regulated rates. The evaluation reflects the current political and regulatory climate at the federal and state levels. If it becomes no longer probable that the deferred costs or income will be included in future regulated rates, the related regulatory assets and liabilities will be recognized in net income, returned to customers or re-established as accumulated other comprehensive income (loss) ("AOCI").

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Fair Value Measurements

As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Alternative valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.

Cash Equivalents and Restricted Cash and Cash Equivalents and Investments

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted amounts are included in restricted cash and cash equivalents on the Consolidated Balance Sheets.

Investments

Eastern Energy Gas utilizes the equity method of accounting with respect to investments when it possesses the ability to exercise significant influence, but not control, over the operating and financial policies of the investee. The ability to exercise significant influence is presumed when the investor possesses more than 20% of the voting interests of the investee. This presumption may be overcome based on specific facts and circumstances that demonstrate the ability to exercise significant influence is restricted. In applying the equity method, Eastern Energy Gas records the investment at cost and subsequently increases or decreases the carrying value of the investment by Eastern Energy Gas' share of the net earnings or losses and other comprehensive income ("OCI") of the investee. Eastern Energy Gas records dividends or other equity distributions as reductions in the carrying value of the investment. Equity investments are presented on the Consolidated Balance Sheets.

Allowance for Credit Losses

Trade receivables are primarily short-term in nature with stated collection terms of less than one year from the date of origination and are stated at the outstanding principal amount, net of an estimated allowance for credit losses. The allowance for credit losses is based on Eastern Energy Gas' assessment of the collectability of amounts owed to Eastern Energy Gas by its customers. This assessment requires judgment regarding the ability of customers to pay or the outcome of any pending disputes. In measuring the allowance for credit losses for trade receivables, Eastern Energy Gas primarily utilizes credit loss history. However, Eastern Energy Gas may adjust the allowance for credit losses to reflect current conditions and reasonable and supportable forecasts that deviate from historical experience. The changes in the balance of the allowance for credit losses, which is included in trades receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):
202020192018
Beginning balance$$$
Charged to operating costs and expenses, net
Write-offs, net(1)
Ending balance$$$

Derivatives

Eastern Energy Gas employs a number of different derivative contracts, which may include forwards, futures, options, swaps and other agreements, to manage its commodity price, interest rate, and foreign currency exchange rate risk. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. Derivative balances reflect offsetting permitted under master netting agreements with counterparties and cash collateral paid or received under such agreements. Cash collateral received from or paid to counterparties to secure derivative contract assets or liabilities in excess of amounts offset is included in other current assets on the Consolidated Balance Sheets.

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  Years Ended December 31,
  2017 2016 2015
Operating revenue:      
Regulated electric $713
 $702
 $810
Regulated gas 99
 110
 137
Total operating revenue $812
 $812
 $947
       
Cost of sales:      
Regulated electric $268
 $265
 $374
Regulated gas 42
 55
 84
Total cost of sales $310
 $320
 $458
       
Gross margin:      
Regulated electric $445
 $437
 $436
Regulated gas 57
 55
 53
Total gross margin $502
 $492
 $489
       
Operating and maintenance:      
Regulated electric $148
 $153
 $149
Regulated gas 18
 17
 18
Total operating and maintenance $166
 $170
 $167
       
Depreciation and amortization:      
Regulated electric $100
 $101
 $96
Regulated gas 14
 17
 17
Total depreciation and amortization $114
 $118
 $113
       
Operating income:      
Regulated electric $176
 $161
 $168
Regulated gas 22
 19
 16
Total operating income $198
 $180
 $184
       
Interest expense:      
Regulated electric $39
 $49
 $56
Regulated gas 4
 5
 5
Total interest expense $43
 $54
 $61
       
Income tax expense:      
Regulated electric $48
 $44
 $43
Regulated gas 7
 5
 4
Total income tax expense $55
 $49
 $47
Commodity derivatives used in normal business operations that are settled by physical delivery, among other criteria, are eligible for and may be designated as normal purchases or normal sales. Normal purchases or normal sales contracts are not marked-to-market and settled amounts are recognized as operating revenue or cost of sales on the Consolidated Statements of Operations.



For Eastern Energy Gas' derivatives not designated as hedging contracts, unrealized gains and losses are recognized on the Consolidated Statements of Operations as operating revenue for derivatives related to natural gas sales contracts; and other, net for interest rate swap derivatives.

For Eastern Energy Gas' derivatives designated as hedging contracts, Eastern Energy Gas formally assesses, at inception and thereafter, whether the hedging contract is highly effective in offsetting changes in the hedged item. Eastern Energy Gas formally documents hedging activity by transaction type and risk management strategy. For derivative instruments that are accounted for as cash flow hedges or fair value hedges, the cash flows from the derivatives and from the related hedged items are classified in operating cash flows.

Changes in the estimated fair value of a derivative contract designated and qualified as a cash flow hedge, to the extent effective, are included on the Consolidated Statements of Changes in Equity as AOCI, net of tax, until the contract settles and the hedged item is recognized in earnings. Eastern Energy Gas discontinues hedge accounting prospectively when it has determined that a derivative contract no longer qualifies as an effective hedge, or when it is no longer probable that the hedged forecasted transaction will occur. When hedge accounting is discontinued because the derivative contract no longer qualifies as an effective hedge, future changes in the estimated fair value of the derivative contract are charged to earnings. Gains and losses related to discontinued hedges that were previously recorded in AOCI will remain in AOCI until the contract settles and the hedged item is recognized in earnings, unless it becomes probable that the hedged forecasted transaction will not occur at which time associated deferred amounts in AOCI are immediately recognized in earnings.

Inventories

Inventories consist mainly of materials and supplies and are determined using the average cost method.

Gas Imbalances

Natural gas imbalances occur when the physical amount of natural gas delivered from, or received by, a pipeline system or storage facility differs from the contractual amount of natural gas delivered or received. Eastern Energy Gas values these imbalances due to, or from, shippers and operators at an appropriate index price at period end, subject to the terms of its tariff for regulated entities. Imbalances are primarily settled in-kind. Imbalances due to Eastern Energy Gas from other parties are reported in other current assets and imbalances that Eastern Energy Gas owes to other parties are reported in other current liabilities on the Consolidated Balance Sheets.

Property, Plant and Equipment, Net

General

Additions to property, plant and equipment are recorded at cost. Eastern Energy Gas capitalizes all construction-related materials, direct labor and contract services, as well as indirect construction costs. Indirect construction costs include capitalized interest, including debt allowance for funds used during construction ("AFUDC"), and equity AFUDC, as applicable. The cost of additions and betterments are capitalized, while costs incurred that do not improve or extend the useful lives of the related assets are generally expensed.

Depreciation and amortization are generally computed by applying the composite or straight-line method based on estimated useful lives. Depreciation studies are completed by Eastern Energy Gas to determine the appropriate group lives, net salvage and group depreciation rates. These studies are reviewed and rates are ultimately approved by the FERC. Net salvage includes the estimated future residual values of the assets and any estimated removal costs recovered through approved depreciation rates. Estimated removal costs are recorded as either a cost of removal regulatory liability or an ARO liability on the Consolidated Balance Sheets, depending on whether the obligation meets the requirements of an ARO. As actual removal costs are incurred, the associated liability is reduced.

Generally when Eastern Energy Gas retires or sells a component of regulated property, plant and equipment, it charges the original cost, net of any proceeds from the disposition, to accumulated depreciation. Any gain or loss on disposals of all other assets is recorded through earnings.
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  Years Ended December 31,
  2017 2016 2015
Capital expenditures:      
Regulated electric $169
 $176
 $229
Regulated gas 17
 18
 23
Total capital expenditures $186
 $194
 $252
       
  As of December 31,
Total assets: 2017 2016 2015
Regulated electric $3,103
 $3,119
 $3,060
Regulated gas 300
 314
 316
Regulated common assets(1)
 10
 60
 111
Total assets $3,413
 $3,493
 $3,487
Debt and equity AFUDC, which represent the estimated costs of debt and equity funds necessary to finance the construction of regulated facilities, is capitalized by Eastern Energy Gas as a component of property, plant and equipment, with offsetting credits to the Consolidated Statements of Operations. AFUDC is computed based on guidelines set forth by the FERC. After construction is completed, Eastern Energy Gas is permitted to earn a return on these costs as a component of the related assets, as well as recover these costs through depreciation expense over the useful lives of the related assets.


Asset Retirement Obligations

Eastern Energy Gas recognizes AROs when it has a legal obligation to perform decommissioning, reclamation or removal activities upon retirement of an asset. Eastern Energy Gas' AROs are primarily related to the obligations associated with its natural gas pipeline and storage well assets. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset. Subsequent to the initial recognition, the ARO liability is adjusted for any revisions to the original estimate of undiscounted cash flows (with corresponding adjustments to property, plant and equipment, net) and for accretion of the ARO liability due to the passage of time. For Eastern Energy Gas, the difference between the ARO liability, the corresponding ARO asset included in property, plant and equipment, net and amounts recovered in rates to satisfy such liabilities is recorded as a regulatory asset or liability.

Impairment of Long-Lived Assets

Eastern Energy Gas evaluates long-lived assets for impairment, including property, plant and equipment, when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable or the assets are being held for sale. Upon the occurrence of a triggering event, the asset is reviewed to assess whether the estimated undiscounted cash flows expected from the use of the asset plus the residual value from the ultimate disposal exceeds the carrying value of the asset. If the carrying value exceeds the estimated recoverable amounts, the asset is written down to the estimated fair value and any resulting impairment loss is reflected on the Consolidated Statements of Operations. The impacts of regulation are considered when evaluating the carrying value of regulated assets. See Notes 4 and 7 for more information.

Leases

Eastern Energy Gas has non-cancelable operating leases primarily for office space, office equipment and land and finance leases consisting primarily of natural gas pipeline facilities and vehicles. These leases generally require Eastern Energy Gas to pay for insurance, taxes and maintenance applicable to the leased property. Given the capital intensive nature of the utility industry, it is common for a portion of lease costs to be capitalized when used during construction or maintenance of assets, in which the associated costs will be capitalized with the corresponding asset and depreciated over the remaining life of that asset. Certain leases contain renewal options for varying periods and escalation clauses for adjusting rent to reflect changes in price indices. Eastern Energy Gas does not include options in its lease calculations unless there is a triggering event indicating Eastern Energy Gas is reasonably certain to exercise the option. Eastern Energy Gas' accounting policy is to not recognize right-of-use assets and lease obligations for leases with contract terms of one year or less and not separate lease components from non-lease components and instead account for each separate lease component and the non-lease components associated with a lease as a single lease component. Leases will be evaluated for impairment in line with Accounting Standards Codification ("ASC") 360, "Property, Plant and Equipment" when a triggering event has occurred that might affect the value and use of the assets being leased.

Eastern Energy Gas' operating and finance right-of-use assets are recorded in other assets and the operating and finance lease liabilities are recorded in current and long-term other liabilities accordingly.


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Goodwill

Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations. Eastern Energy Gas evaluates goodwill for impairment at least annually. Prior to the GT&S Transaction, Eastern Energy Gas evaluated goodwill for impairment as of April 1. As a result of the GT&S Transaction, Eastern Energy Gas will complete its annual reviews as of October 31 to align with BHE's policy. When evaluating goodwill for impairment, Eastern Energy Gas estimates the fair value of its reporting units. If the carrying amount of a reporting unit, including goodwill, exceeds the estimated fair value, then the identifiable assets, including identifiable intangible assets, and liabilities of the reporting unit are estimated at fair value as of the current testing date. The excess of the estimated fair value of the reporting unit over the current estimated fair value of net assets establishes the implied value of goodwill. The excess of the recorded goodwill over the implied goodwill value is charged to earnings as an impairment loss. Significant judgment is required in estimating the fair value of the reporting unit and performing goodwill impairment tests. Eastern Energy Gas uses a variety of methods to estimate a reporting unit's fair value, principally discounted projected future net cash flows. Key assumptions used include, but are not limited to, the use of estimated future cash flows; multiples of earnings; and an appropriate discount rate. In estimating future cash flows, Eastern Energy Gas incorporates current market information, as well as historical factors. As such, the determination of fair value incorporates significant unobservable inputs. During 2020, 2019 and 2018, Eastern Energy Gas did not record any goodwill impairments.

Eastern Energy Gas records goodwill adjustments for (a) the tax benefit associated with the excess of tax-deductible goodwill over the reported amount of goodwill and (b) changes to the purchase price allocation prior to the end of the measurement period, which is not to exceed one year from the acquisition date.

Revenue Recognition

Eastern Energy Gas uses a single five-step model to identify and recognize revenue from contracts with customers ("Customer Revenue") upon transfer of control of promised goods or services in an amount that reflects the consideration to which Eastern Energy Gas expects to be entitled in exchange for those goods or services. Eastern Energy Gas records sales and excise taxes collected directly from customers and remitted directly to the taxing authorities on a net basis on the Consolidated Statements of Operations.

A majority of Eastern Energy Gas' energy revenue is derived from tariff-based sales arrangements approved by the FERC. These tariff-based revenues are mainly comprised of natural gas transmission and storage services and have performance obligations which are satisfied over time as services are provided. Eastern Energy Gas' revenue that is nonregulated primarily relates to LNG terminalling services.

Revenue recognized is equal to what Eastern Energy Gas has the right to invoice as it corresponds directly with the value to the customer of Eastern Energy Gas' performance to date and includes billed and unbilled amounts. As of December 31, 2020 and 2019, trade receivables, net on the Consolidated Balance Sheets relate substantially to Customer Revenue, including unbilled revenue of $95 million and $104 million, respectively. Payments for amounts billed are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued. In the event one of the parties to a contract has performed before the other, Eastern Energy Gas would recognize a contract asset or contract liability depending on the relationship between Eastern Energy Gas' performance and the customer's payment. Eastern Energy Gas has recognized contract assets of $29 million and $40 million as of December 31, 2020 and 2019, respectively, and $19 million and $20 million of contract liabilities as of December 31, 2020 and 2019, respectively, due to Eastern Energy Gas' performance on certain contracts.

Unamortized Debt Premiums, Discounts and Debt Issuance Costs

Premiums, discounts and debt issuance costs incurred for the issuance of long-term debt are amortized over the term of the related financing using the effective interest method.

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Income Taxes

Prior to the GT&S Transaction, DEI included Eastern Energy Gas in its consolidated United States federal income tax return. Subsequent to the GT&S Transaction, Berkshire Hathaway includes Eastern Energy Gas in its consolidated United States federal income tax return. Consistent with established regulatory practice, Eastern Energy Gas' provision for income taxes has been computed on a stand-alone return basis.

Deferred income tax assets and liabilities are based on differences between the financial statement and income tax basis of assets and liabilities using enacted income tax rates expected to be in effect for the year in which the differences are expected to reverse. Changes in deferred income tax assets and liabilities associated with components of OCI are charged or credited directly to OCI. Changes in deferred income tax assets and liabilities associated with certain property-related basis differences and other various differences that Eastern Energy Gas' regulated businesses deems probable to be passed on to its customers are charged or credited directly to a regulatory asset or liability and will be included in regulated rates when the temporary differences reverse. Other changes in deferred income tax assets and liabilities are included as a component of income tax expense. Changes in deferred income tax assets and liabilities attributable to changes in enacted income tax rates are charged or credited to income tax expense or a regulatory asset or liability in the period of enactment. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount that is more-likely-than-not to be realized.

In determining Eastern Energy Gas' income taxes, management is required to interpret complex income tax laws and regulations, which includes consideration of regulatory implications imposed by the FERC. Eastern Energy Gas' income tax returns are subject to continuous examinations by federal, state and local income tax authorities that may give rise to different interpretations of these complex laws and regulations. Due to the nature of the examination process, it generally takes years before these examinations are completed and these matters are resolved. Eastern Energy Gas recognizes the tax benefit from an uncertain tax position only if it is more-likely-than-not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the Consolidated Financial Statements from such a position are measured based on the largest benefit that is more-likely-than-not to be realized upon ultimate settlement. Although the ultimate resolution of Eastern Energy Gas' federal, state and local income tax examinations is uncertain, Eastern Energy Gas believes it has made adequate provisions for these income tax positions. The aggregate amount of any additional income tax liabilities that may result from these examinations, if any, is not expected to have a material impact on Eastern Energy Gas' consolidated financial results. Estimated interest and penalties, if any, related to uncertain tax positions are included as a component of income tax expense on the Consolidated Statements of Operations.

Segment Information

Eastern Energy Gas currently has one segment, which includes its natural gas pipeline, storage and LNG operations.

(3)    Business Acquisitions and Dispositions

Acquisition of Eastern Energy Gas by BHE

In July 2020, DEI entered into an agreement to sell substantially all of its gas transmission and storage operations, including Eastern Energy Gas and a 25% limited partnership interest in Cove Point, to BHE. Approval of the transaction under the Hart-Scott-Rodino Act was not obtained within 75 days and DEI and BHE mutually agreed to a dual-phase closing consisting of two separate disposal groups identified as the GT&S Transaction and the proposed sale of the Questar Pipeline Group by DEI to BHE pursuant to a purchase and sale agreement entered into on October 5, 2020 ("Q-Pipe Transaction"). The Q-Pipe Transaction is currently anticipated to close in the first half of 2021, contingent on clearance or approval under the Hart-Scott-Rodino Act, and other customary closing and regulatory conditions. Prior to the completion of the GT&S Transaction, Eastern Energy Gas finalized a restructuring whereby Eastern Energy Gas distributed the Questar Pipeline Group and a 50% noncontrolling interest in Cove Point to DEI. This restructuring was accounted for by Eastern Energy Gas as a reorganization of entities under common control and the disposition was reflected as an equity transaction. The disposition was not reported as a discontinued operation as the disposal did not represent a strategic shift in the way management had intended to run the business.

In November 2020, the GT&S Transaction was completed and Eastern Energy Gas, with the exception of the Questar Pipeline Group as discussed above, became an indirect wholly-owned subsidiary of BHE. DEI retained a 50% noncontrolling interest in Cove Point as well as the assets and obligations of the pension and other postretirement employee benefit plans associated with the operations sold and relating to services provided before closing. See Notes 11 and 14 for more information on the GT&S Transaction.

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Eastern Energy Gas recorded a distribution of net assets of $699 million, including goodwill of $185 million and $41 million of cash, for the distribution of the Questar Pipeline Group to DEI and recorded an approximately $2.8 billion increase in noncontrolling interests for DEI's retained 50% noncontrolling interest in Cove Point. Additionally, in accordance with the terms of the GT&S Transaction, DEI retained certain assets and liabilities associated with Eastern Energy Gas and settled all affiliated balances. As a result, Eastern Energy Gas recorded a contribution for the reset of deferred taxes of $1.3 billion, net of distributions of $895 million related to the pension and other postretirement employee benefit plans retained by DEI and $107 million related to the settlement of affiliated balances.

Dominion Energy Gas Restructuring

The acquisition of CPMLP Holdings Company, LLC (formerly known as Dominion Cove Point, LLC) ("DCP") and Eastern MLP Holding Company II, LLC (formerly known as Dominion MLP Holding Company II, LLC) ("DMLPHCII") from, and the disposition of the East Ohio Gas Company ("East Ohio") and Eastern Gathering and Processing, Inc. (formerly known as Dominion Gathering and Processing, Inc.) ("EGP") to, DEI by Eastern Energy Gas on November 6, 2019 ("Dominion Energy Gas Restructuring") was considered to be a reorganization of entities under common control. As a result, Eastern Energy Gas' basis in DCP and DMLPHCII, which included the general partner of Northeast Midstream Partners, LP (formerly known as Dominion Energy Midstream Partners, LP) ("Northeast Midstream"), a controlling 75% interest in Cove Point, Carolina Gas Transmission, LLC (formerly known as Dominion Energy Carolina Gas Transmission, LLC), Questar Pipeline Group, a 50% noncontrolling interest in White River Hub, LLC ("White River Hub") and a 25.93% noncontrolling interest in Iroquois, is equal to DEI's cost basis in the assets and liabilities of such entities since the applicable inception dates of common control. In November 2019, following completion of the Dominion Energy Gas Restructuring, DCP and DMLPHCII are wholly-owned subsidiaries of Eastern Energy Gas and therefore are consolidated by Eastern Energy Gas. The accompanying Consolidated Financial Statements and Notes of Eastern Energy Gas have been retrospectively adjusted to include the historical results and financial position of DCP and DMLPHCII. The 25% interest in Cove Point retained by DEI, and subsequently sold to Brookfield Super-Core Infrastructure Partners ("Brookfield") in December 2019, and the non-DEI held interest in Northeast Midstream (through January 2019) are reflected as noncontrolling interest.

The Dominion Energy Gas Restructuring included the disposition of East Ohio and EGP by Eastern Energy Gas in November 2019. This restructuring represented a strategic shift in the operations of Eastern Energy Gas as Eastern Energy Gas' operations consist of LNG import/export and storage and regulated gas transmission and storage operations. As a result, the accompanying Consolidated Financial Statements and Notes of Eastern Energy Gas have been retrospectively adjusted to include the historical results and financial position of East Ohio and EGP as discontinued operations until November 2019. As the Dominion Energy Gas Restructuring was considered to be a reorganization of entities under common control, Eastern Energy Gas reflected the disposition as an equity transaction. The following table represents selected information regarding the results of operations of East Ohio, which are reported as discontinued operations in Eastern Energy Gas' Consolidated Statements of Operations (in millions):

Period Ended
November 6, 2019
Year Ended
December 31, 2018
Operating revenue$594 $729 
Depreciation and amortization73 76 
Other operating expenses399 444 
Other income (expense), net28 35 
Income tax expense26 53 
Net income from discontinued operations$124 $191 

Capital expenditures and significant noncash items relating to East Ohio included the following (in millions):

Period Ended
November 6, 2019
Year Ended
December 31, 2018
Capital expenditures$299 $352 
Significant noncash items:
Charge related to a voluntary retirement program200
Accrued capital expenditures25

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The following table represents selected information regarding the results of operations of EGP, which are reported as discontinued operations in Eastern Energy Gas' Consolidated Statements of Operations (in millions):

Period Ended
November 6, 2019
Year Ended
December 31, 2018
Operating revenue$125 $220 
Depreciation and amortization15 
Other operating expenses97 425 
Income tax expense (benefit)(53)
Net income (loss) from discontinued operations$17 $(167)

Capital expenditures and significant noncash items of EGP included the following (in millions):

Period Ended
November 6, 2019
Year Ended
December 31, 2018
Capital expenditures$11 $
Significant noncash items:
Impairment of assets(219)

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(4)    Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20202019
Utility Plant:
Interstate natural gas pipeline assets24 - 43 years$8,382 $10,025 
Intangible plant5 - 10 years115 143 
Utility plant in service8,497 10,168 
Accumulated depreciation and amortization(2,759)(3,414)
Utility plant in service, net5,738 6,754 
Nonutility Plant:
LNG facility40 years4,454 4,425 
Intangible plant14 years25 25 
Nonutility plant in service4,479 4,450 
Accumulated depreciation and amortization(283)(196)
Nonutility plant in service, net4,196 4,254 
Plant, net9,934 11,008 
Construction work- in-progress210 719 
Property, plant and equipment, net$10,144 $11,727 

Construction work-in-progress includes $196 million and $584 million as of December 31, 2020 and 2019, respectively, related to the construction of utility plant.

EGP Gathering and Processing Assets

In the fourth quarter of 2018, Eastern Energy Gas conducted a review of strategic alternatives of its remaining gathering and processing assets at EGP. Based on an evaluation of EGP's long-lived assets for recoverability under a probability weighted approach, Eastern Energy Gas determined the assets were impaired. As a result of this evaluation, Eastern Energy Gas recorded a charge of $219 million ($165 million after-tax) in discontinued operations in its Consolidated Statement of Operations to write-down EGP's property, plant and equipment to its estimated fair value of $190 million. The fair value of the property, plant and equipment was estimated using an income approach and market approach. The valuation is considered a Level 3 fair value measurement due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates reflecting risks inherent in the future cash flows and market prices.

Assignments of Shale Development Rights

In December 2013, Eastern Energy Gas closed on agreements with 2 natural gas producers to convey over time approximately 100,000 acres of Marcellus Shale development rights underneath several of its natural gas storage fields. The agreements provided for payments to Eastern Energy Gas, subject to customary adjustments, of approximately $200 million over a period of nine years, and an overriding royalty interest in gas produced from the acreage. In August 2017, Eastern Energy Gas and the natural gas producer signed an amendment to the agreement, which included the finalization of contractual matters on previous conveyances, the conveyance of Eastern Energy Gas' remaining 68% interest in approximately 70,000 acres and the elimination of Eastern Energy Gas' overriding royalty interest in gas produced from all acreage. Eastern Energy Gas received consideration of $65 million in September 2018 in connection with the final conveyance. As a result of this amendment, Eastern Energy Gas recognized in 2018 a $65 million ($47 million after-tax) gain included in operations and maintenance expense in the Consolidated Statement of Operations associated with the final conveyance of acreage.


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In November 2014, Eastern Energy Gas closed an agreement with a natural gas producer to convey over time approximately 24,000 acres of Marcellus Shale development rights underneath one of its natural gas storage fields. The agreement provided for payments to Eastern Energy Gas, subject to customary adjustments, of approximately $120 million over a period of four years, and an overriding royalty interest in gas produced from the acreage. In January 2018, Eastern Energy Gas and the natural gas producer closed on an amendment to the agreement, which included the conveyance of Eastern Energy Gas' remaining 50% interest in approximately 18,000 acres and the elimination of Eastern Energy Gas' overriding royalty interest in gas produced from all acreage. Eastern Energy Gas received proceeds of $28 million, resulting in an approximately $28 million ($20 million after-tax) gain recorded in operations and maintenance expense in the Consolidated Statement of Operations.

In March 2018, Eastern Energy Gas closed an agreement with a natural gas producer to convey approximately 11,000 acres of Utica and Point Pleasant Shale development rights underneath one of its natural gas storage fields. The agreement provided for a payment to Eastern Energy Gas, subject to customary adjustments, of $16 million. In March 2018, Eastern Energy Gas received cash proceeds of $16 million associated with the conveyance of the acreage, resulting in a $16 million ($12 million after-tax) gain recorded in operations and maintenance expense in the Consolidated Statement of Operations.

In June 2018, Eastern Energy Gas closed an amendment to an agreement with a natural gas producer for the elimination of Eastern Energy Gas' overriding royalty interest in gas produced from approximately 9,000 acres of Marcellus Shale development rights underneath one of its natural gas storage fields previously conveyed in December 2013. In June 2018, Eastern Energy Gas received proceeds of $6 million associated with the transaction, resulting in a $6 million ($4 million after-tax) gain recorded in operations and maintenance expense in the Consolidated Statement of Operations.

(5)    Jointly Owned Utility Facilities

Under joint facility ownership agreements with other utilities, Eastern Energy Gas, as a tenant in common, has undivided interests in jointly owned transmission and storage facilities. Eastern Energy Gas accounts for its proportionate share of each facility, and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners primarily based on their percentage of ownership. Operating costs and expenses on the Consolidated Statements of Operations include Eastern Energy Gas' share of the expenses of these facilities.

The amounts shown in the table below represent Eastern Energy Gas' share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2020 (dollars in millions):

FacilityAccumulatedConstruction
Eastern Energy Gas'inDepreciation andWork-in-
ShareServiceAmortizationProgress
Ellisburg Pool39 %$28 $10 $
Ellisburg Station50 25 
Harrison50 53 16 
Leidy50 133 44 
Oakford50 200 64 
Total$439 $141 $11 


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(6)    Leases

The following table summarizes Eastern Energy Gas' leases recorded on the Consolidated Balance Sheet (in millions):

As of
December 31, 2020December 31, 2019
Right-of-use assets:
Operating leases$31 $37 
Finance leases
Total right-of-use assets$39 $43 
Lease liabilities:
Operating leases$29 $35 
Finance leases
Total lease liabilities$35 $41 

The following table summarizes Eastern Energy Gas' lease costs (in millions):

Years Ended
December 31, 2020December 31, 2019
Operating$$
Short-term
Total lease costs$12 $14 
Weighted-average remaining lease term (years):
Operating leases11.511.2
Finance leases4.75.6
Weighted-average discount rate:
Operating leases4.4 %4.4 %
Finance leases2.6 %4.1 %

The following table summarizes Eastern Energy Gas' supplemental cash flow information relating to leases (in millions):

Years Ended
December 31, 2020December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$12 $14 

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Eastern Energy Gas has the following remaining lease commitments as of (in millions):

December 31, 2020
OperatingFinanceTotal
2021$$$
2022
2023
2024
2025
Thereafter19 19 
Total undiscounted lease payments$38 $$45 
Less - amounts representing interest(9)(1)(10)
Lease liabilities$29 $$35 

(7)    Regulatory Matters

Regulatory Assets

Regulatory assets represent costs that are expected to be recovered in future regulated rates. Eastern Energy Gas' regulatory assets reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted Average Remaining Life20202019
Employee benefit plans(1)
Various$70 $
Interest rate hedges(2)
Various32 
OtherVarious12 16 
Total regulatory assets$82 $48 
Reflected as:
Current assets$$
Noncurrent assets74 40 
Total regulatory assets$82 $48 

(1)Represents costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain rate-regulated subsidiaries.

(2)Reflects interest rate hedges recoverable from or refundable to customers. Certain of these instruments are settled and any related payments are being amortized into interest expense over the life of the related debt.

Eastern Energy Gas had regulatory assets not earning a return on investment of $10 million and $46 million as of December 31, 2020 and 2019, respectively.


437


Regulatory Liabilities

Regulatory liabilities represent income to be recognized or amounts expected to be returned to customers in future periods. Eastern Energy Gas' regulatory liabilities reflected on the Consolidated Balance Sheets consist of the following as of December 31 (in millions):
Weighted Average Remaining Life20202019
Income taxes refundable through future rates(1)
Various$473 $560 
Other postretirement benefit costs(2)
Various115 133 
Provision for future cost of removal and AROs(3)
Various89 113 
OtherVarious32 35 
Total regulatory liabilities$709 $841 
Reflected as:
Current liabilities$40 $41 
Noncurrent liabilities669 800 
Total regulatory liabilities$709 $841 

(1)Amounts primarily represent income tax liabilities related to the federal tax rate change from 35% to 21% that are probable to be passed on to customers, offset by income tax benefits related to certain property-related basis differences and other various differences that were previously passed on to customers and will be included in regulated rates when the temporary differences reverse.

(2)Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred.

(3)Rates charged to customers by Eastern Energy Gas' regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement.


Regulatory Matters

Eastern Gas Transmission and Storage, Inc.

In July 2017, the FERC audit staff communicated to Eastern Gas Transmission and Storage, Inc. ("EGTS") that it had substantially completed an audit of EGTS' compliance with the accounting and reporting requirements of the FERC's Uniform System of Accounts and provided a description of matters and preliminary recommendations. In November 2017, the FERC audit staff issued its audit report. In December 2017, EGTS provided its response to the audit report. EGTS requested FERC review of the contested findings and submitted its plan for compliance with the uncontested portions of the report. EGTS reached resolution of certain matters with the FERC in the fourth quarter of 2018. EGTS recognized a charge of $129 million ($94 million after-tax) recorded primarily within operations and maintenance expense in the Consolidated Statement of Operations for the year ended December 31, 2018 for a disallowance of plant, originally established beginning in 2012, for the resolution of one matter with the FERC. In December 2020, the FERC issued a final ruling on the remaining matter, which resulted in a $43 million ($31 million after-tax) charge for disallowance of capitalized AFUDC, recorded within operations and maintenance expense in the Consolidated Statement of Operations. As a condition of the December 2020 ruling, EGTS will file its proposed accounting entries and supporting documentation with the FERC by the second quarter of 2021; however, EGTS does not expect a material change from the charge recognized.

438


In December 2014, EGTS entered into a precedent agreement with Atlantic Coast Pipeline, LLC ("Atlantic Coast Pipeline") for the project previously intended for EGTS to provide approximately 1,500,000 decatherms ("Dth") of firm transportation service to various customers in connection with the Atlantic Coast Pipeline project ("Supply Header Project"). As a result of the cancellation of the Atlantic Coast Pipeline project, in the second quarter of 2020 Eastern Energy Gas recorded a charge of $482 million ($359 million after-tax) in operations and maintenance expense in its Consolidated Statement of Operations associated with the probable abandonment of a significant portion of the project as well as the establishment of a $75 million ARO. In the third quarter of 2020, Eastern Energy Gas recorded an additional charge of $10 million ($7 million after-tax) associated with the probable abandonment of a significant portion of the project and a $29 million ($20 million after-tax) benefit from a revision to the previously established ARO, both of which were recorded in operations and maintenance expense in Eastern Energy Gas' Consolidated Statement of Operations. As EGTS evaluates its future use, approximately $40 million remains within property, plant and equipment for a potential modified project.

In December 2019, EGTS filed an application to request FERC authorization to construct, operate and maintain the Tri-West project to provide 120,000 Dths per day of firm transportation service from Pennsylvania to Ohio for delivery to Tennessee Gas Pipeline Company, L.L.C. The application was automatically approved after a 60-day waiting period from the date of filing and the project commenced commercial operations in August 2020 at a cost of $17 million.

In January 2018, EGTS filed an application to request FERC authorization to construct and operate certain facilities located in Ohio and Pennsylvania for the Sweden Valley project. In June 2019, EGTS withdrew its application for the project due to certain regulatory delays. As a result of the project abandonment, during the second quarter of 2019, EGTS recorded a charge of $13 million ($10 million after-tax), included in operations and maintenance expenses in the Consolidated Statement of Operations.

Cove Point

In June 2015, Cove Point executed 2 binding precedent agreements for the approximately $150 million project to provide 150,000 Dths per day of transportation service to help meet demand for natural gas for Washington Gas Light Company ("Eastern Market Access Project"). In January 2018, Cove Point received FERC authorization to construct and operate the project facilities. In October 2018, Cove Point announced it was evaluating alternatives to a proposed Charles County, Maryland compressor station that was initially part of this project and in December 2018, after working with project customers for alternative solutions, decided not to pursue further construction at this location resulting in a revised project estimate of approximately $45 million and a write-off of $37 million ($28 million after-tax). In May 2019, Cove Point filed an application for an amendment to vacate its FERC authorization for the Charles County, Maryland compressor station and revised its project scope. In August 2019, Cove Point received FERC authorization and the Eastern Market Access Project commenced commercial operations in September 2019.

In January 2020, pursuant to the terms of a previous settlement, Cove Point filed a general rate case for its FERC-jurisdictional services, with proposed rates to be effective March 1, 2020. Cove Point proposed an annual cost-of-service of approximately $182 million. In February 2020, FERC approved suspending the changes in rates for five months following the proposed effective date, until August 1, 2020, subject to refund. In November 2020, Cove Point reached an agreement in principle with the active participants in the general rate case proceeding.Under the terms of the agreement in principle, Cove Point's rates effective August 1, 2020 result in an increase to annual revenues of approximately $4 million and a decrease in annual depreciation expense of approximately $1 million, compared to the rates in effect prior to August 1, 2020.The interim settlement rates were implemented November 1, 2020, and Cove Point's provision for rate refunds for August 2020 through October 2020 totaled $7 million. The agreement in principle was reflected in a stipulation and agreement filed with the FERC in January 2021, which is subject to final approval by the FERC.


439


(8)    Investments and Restricted Cash and Cash Equivalents

Investments and restricted cash and cash equivalents consists of the following as of December 31 (in millions):

December 31, 2020December 31, 2019
Equity method investments:
Iroquois$244 $276 
White River Hub36 
Total investments244 312 
Restricted cash and cash equivalents:
Customer deposits13 12 
Total restricted cash and cash equivalents13 12 
Total investments and restricted cash and cash equivalents$257 $324 
Reflected as:
Current assets$13 $12 
Noncurrent assets244 312 
Total investments and restricted cash and cash equivalents$257 $324 

Equity Method Investments

Eastern Energy Gas, through a subsidiary, owns 50% of Iroquois, which owns and operates an interstate natural gas pipeline located in the states of New York and Connecticut. Prior to the GT&S Transaction, Eastern Energy Gas, through the Questar Pipeline Group, owned 50% of White River Hub, which owns and operates a natural gas pipeline in northwest Colorado.

As of December 31, 2020 and 2019, the carrying amount of Eastern Energy Gas' investments exceeded its share of underlying equity in net assets by $130 million and $146 million, respectively. The difference reflects equity method goodwill and is not being amortized. Eastern Energy Gas received distributions from its investments of $77 million, $74 million and $64 million for the years ended December 31, 2020, 2019 and 2018, respectively.

(9)    Short-term Debt and Credit Facilities

Prior to the GT&S Transaction, Eastern Energy Gas' short-term financing was supported through its access as co-borrower to a joint revolving credit facility with DEI. The credit facility was used for working capital, as support for the combined commercial paper programs of the borrowers under the credit facility and for other general corporate purposes. As of December 31, 2019, a maximum of $1.5 billion of the facility was available to Eastern Energy Gas and the sub-limit was $750 million. As of December 31, 2019, Eastern Energy Gas had $62 million of commercial paper outstanding with a weighted-average interest rate of 1.98%.

440


(10)    Long-term Debt

Eastern Energy Gas' long-term debt consists of the following, including unamortized premiums, discounts and debt issuance costs, as of December 31 (dollars and euros in millions):

Par Value20202019
Variable-rate Senior Notes, due 2021(1)
$500 $500 $499 
2.8% Senior Notes, due 2020699 
2.875% Senior Notes, due 2023250 249 249 
3.55% Senior Notes, due 2023400 399 398 
2.5% Senior Notes, due 2024600 596 596 
3.6% Senior Notes, due 2024450 448 447 
3.32% Senior Notes, due 2026 (€250)(2)
305 304 279 
3.53% Senior Notes, due 2028(3)
99 
3% Senior Notes, due 2029600 594 594 
3.8% Senior Notes, due 2031150 150 149 
3.91% Senior Notes, due 2038(3)
149 
4.875% Senior Notes, due 2041(3)
177 
4.8% Senior Notes, due 2043400 395 395 
4.6% Senior Notes, due 2044500 493 493 
3.9% Senior Notes, due 2049300 297 297 
Total long-term debt$4,455 $4,425 $5,520 
Reflected as:
Current portion of long-term debt$500 $699 
Long-term debt3,925 4,821 
Total long-term debt$4,425 $5,520 

(1)The senior notes have variable interest rates based on LIBOR plus an applicable spread. Eastern Energy Gas has entered into an interest rate swap that fixes the interest rate on 100% of the notes. The fixed interest rates as of December 31, 2020 and 2019 were 3.46% (including a 0.60% margin).
(2)The senior notes are denominated in Euros with an outstanding principal balance of €250 million and a fixed interest rate of 1.45%. Eastern Energy Gas has entered into cross currency swaps that fix USD payments for 100% of the notes. The fixed USD outstanding principal when combined with the swaps is $280 million, with fixed interest rates at both December 31, 2020 and 2019 that averaged 3.32%.
(3)Long-term debt associated with the Questar Pipeline Group.

Annual Payment on Long-Term Debt

The annual repayments of long-term debt for the years beginning January 1, 2021 and thereafter, are as follows (in millions):

2021$500 
2022
2023650 
20241,050 
2025
2026 and thereafter2,255 
Total4,455 
Unamortized premium, discount and debt issuance cost(30)
Total$4,425 


441


(11)    Income Taxes

Income tax (benefit) expense consists of the following for the years ended December 31 (in millions):

202020192018
Current:
Federal$(20)$130 $(227)
State17 31 
(19)147 (196)
Deferred:
Federal23 (36)337 
State(28)(10)(17)
(5)(46)320 
Total$(24)$101 $124 

Income tax expense reported in discontinued operations for the year ended December 31, 2019 was $33 million. Income tax expense reported in discontinued operations for year ended December 31, 2018 was less than $1 million.

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax (benefit) expense is as follows for the years ended December 31:

202020192018
Federal statutory income tax rate21 %21 %21 %
State income tax, net of federal income tax benefit(13)
Equity interest
Effects of ratemaking(2)(1)(1)
Federal legislative changes(1)
Change in tax status(9)(4)
AFUDC-equity(1)(1)
Absence of noncontrolling interest(16)(3)(5)
Write-off of regulatory assets
Other, net(1)
Effective income tax rate(12)%13 %18 %

For the year ended December 31, 2020, Eastern Energy Gas' effective tax rate is primarily a function of the nominal year-to-date pre-tax income driven by charges associated with the Supply Header Project, as discussed in Note 7. In addition, the effective tax rate reflects an income tax benefit of $24 million associated with finalizing the effects of changes in tax status of certain subsidiaries in connection with the Dominion Energy Gas Restructuring.


442


The net deferred income tax asset (liability) consists of the following as of December 31 (in millions):

20202019
Deferred income tax assets:
Employee benefits$30 $15 
Intangibles148 
Derivatives and hedges18 28 
Regulatory liabilities
Deferred revenues
Other
Total deferred income tax assets200 53 
Valuation allowance(1)
Total deferred income tax assets, net200 52 
Deferred income tax liabilities:
Property related items(52)(695)
Partnership investments(19)(438)
Pension benefits(1)(202)
Debt issuance discount(8)
Other(1)(5)
Total deferred income tax liabilities(81)(1,340)
Net deferred income tax asset (liability)(1)
$119 $(1,288)

(1)Net deferred income tax asset as of December 31, 2020 is presented in other assets in the Consolidated Balance Sheet.

The net deferred income tax liability decreased significantly due to the GT&S Transaction. The acquisition was treated as a deemed asset sale for federal and state income tax purposes. All deferred taxes at Eastern Energy Gas were reset to reflect financial and tax basis differences as of November 1, 2020.

Through October 31, 2020, Eastern Energy Gas was included in DEI's consolidated federal income tax return and, where applicable, combined state income tax returns. The United States Internal Revenue Service has closed its examination of Eastern Energy Gas' consolidated income tax returns through December 31, 2018. The statute of limitations for Eastern Energy Gas' state tax returns have expired through December 31, 2016, with the exception of Pennsylvania, New York and West Virginia, for which the earliest remaining open tax years are December 31, 2012, December 31, 2015, and December 31, 2017, respectively. DEI is responsible for income taxes, including any adjustments resulting from its audit examinations, prior to the GT&S Transaction.

A reconciliation of the beginning and ending balances of Eastern Energy Gas' net unrecognized tax benefits is as follows for the years ended December 31 (in millions):

20202019
Beginning balance$$
Additions for tax positions of prior years
Reductions for unrecognized tax benefits retained by DEI(7)
Ending balance$$

As of December 31, 2019, Eastern Energy Gas has unrecognized tax benefits of $2 million, that if recognized, would have an impact on the effective tax rate. As part of the GT&S Transaction, DEI will retain all pre-close unrecognized tax benefits.

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(12)    Employee Benefit Plans

Defined Benefit Plans

As discussed in Note 3, in November 2020, the GT&S Transaction was completed and the assets and obligations of the pension and other postretirement employee benefit plans associated with the operations sold and relating to services provided before closing were retained by DEI. As a result, just prior to completing the sale, net benefit plan assets of $895 million were distributed through an equity transaction with DEI. Eastern Energy Gas employees are covered by MidAmerican Energy Company's ("MidAmerican Energy") pension and other postretirement benefit plans subsequent to the GT&S Transaction. Prior to the GT&S Transaction, Eastern Energy Gas participated in a number of the DEI-sponsored retirement plans.

Prior to the GT&S Transaction, certain Eastern Energy Gas employees not represented by collective bargaining units were covered by the Dominion Energy Pension Plan, a defined benefit pension plan sponsored by DEI that provides benefits to multiple DEI subsidiaries. As participating employers, Eastern Energy Gas was subject to DEI's funding policy, which was to contribute annually an amount that is in accordance with the Employee Retirement Income Security Act of 1974. During 2020, Eastern Energy Gas made 0 contributions to the Dominion Energy Pension Plan. Eastern Energy Gas' net periodic pension credit related to this plan was $(14) million, $(8) million and $(35) million for the years ended December 31, 2020, 2019 and 2018, respectively. Net periodic pension (credit) cost is reflected in other operations and maintenance expense in the Consolidated Statements of Operations, except for $(14) million and $(21) million of Eastern Energy Gas' costs for the years ended December 31, 2019 and 2018, respectively, that are recorded in net income from discontinued operations. The funded status of various DEI subsidiary groups and employee compensation are the basis for determining the share of total pension costs for participating DEI subsidiaries. Subsequent to the GT&S Transaction, certain Eastern Energy Gas employees are covered by the MidAmerican Energy Pension Plan similar to the DEI plan described above. Eastern Energy Gas' net periodic pension cost related to this plan was $3 million for the year ended December 31, 2020. During 2020, Eastern Energy Gas made $3 million of contributions to the MidAmerican Energy Pension Plan and expects to contribute $19 million in 2021.

Prior to the GT&S transaction, certain retiree healthcare and life insurance benefits for Eastern Energy Gas employees not represented by collective bargaining units were covered by the Dominion Energy Retiree Health and Welfare Plan, a plan sponsored by DEI that provides certain retiree healthcare and life insurance benefits to multiple DEI subsidiaries. Eastern Energy Gas' net periodic benefit credit related to this plan was $(5) million, $(4) million, and $(8) million for the years ended December 31, 2020, 2019 and 2018, respectively. Net periodic benefit (credit) cost is reflected in other operations and maintenance expense in the Consolidated Statements of Operations, except for less than $(1) million and $(2) million of Eastern Energy Gas' costs for the years ended December 31, 2019 and 2018, respectively, that are recorded in net income from discontinued operations. Employee headcount is the basis for determining the share of total other postretirement benefit costs for participating DEI subsidiaries. Subsequent to the GT&S Transaction, certain Eastern Energy Gas employees are covered by the MidAmerican Energy Retiree Health and Welfare plan similar to the DEI plan described above. Eastern Energy Gas' net periodic benefit cost related to this plan was $2 million for the year ended December 31, 2020. During 2020, Eastern Energy Gas made $2 million of contributions to the MidAmerican Energy Health and Welfare Plan and expects to contribute $12 million in 2021.

Pension benefits for Eastern Energy Gas employees represented by collective bargaining units were covered by a separate pension plan that provides benefits to employees of both EGTS and Hope Gas, Inc. ("Hope"). Employee compensation was the basis for allocating pension costs and obligations between EGTS and Hope. Retiree healthcare and life insurance benefits for Eastern Energy Gas employees represented by collective bargaining units were covered by a separate other postretirement benefit plan that provides benefits to both EGTS and Hope. Employee headcount was the basis for allocating other postretirement benefit costs and obligations between EGTS and Hope.

Eastern Energy Gas included the separate pension and other postretirement benefit plans for East Ohio employees covered by collective bargaining units through November 2019, the effective date of the Dominion Energy Gas Restructuring. See Note 3 for more information on the Dominion Energy Gas Restructuring.

Pension Remeasurement

In the third quarter of 2020, Eastern Energy Gas remeasured a pension plan due to a curtailment resulting from the agreement for DEI to retain the assets and obligations of the pension benefit plan associated with the GT&S Transaction. The remeasurement resulted in an increase in the pension benefit obligation of $3 million and a decrease in the fair value of the pension plan assets of $7 million for Eastern Energy Gas. The impact of the remeasurement on net periodic pension benefit credit was recognized prospectively from the remeasurement date and is not material. The discount rate used for the remeasurement was 3.16%. All other assumptions used for the remeasurement were consistent with the measurement as of December 31, 2019.

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Voluntary Retirement Program

In March 2019, Eastern Energy Gas announced a voluntary retirement program to employees that met certain age and service requirements. The voluntary retirement program will not compromise safety or Eastern Energy Gas' ability to comply with applicable laws and regulations. In 2019, upon the determinations made concerning the number of employees that elected to participate in the program, Eastern Energy Gas recorded a charge of $74 million ($58 million after-tax) included within operations and maintenance expense ($41 million), other income ($1 million) and discontinued operations ($32 million) in the Consolidated Statements of Operations. In the second quarter of 2019, Eastern Energy Gas remeasured its pension and other postretirement benefit plans as a result of the voluntary retirement program. The remeasurement resulted in an increase in the pension benefit obligation of $32 million and an increase in the fair value of the pension plan assets of $146 million. In addition, the remeasurement resulted in an increase in the accumulated postretirement benefit obligation of $8 million and an increase in the fair value of the other postretirement benefit plan assets of $29 million. The impact of the remeasurement on net periodic benefit cost (credit) was recognized prospectively from the remeasurement date. The discount rate used for the remeasurement was 4.10% for the Eastern Energy Gas pension plans and 4.05% for the Eastern Energy Gas other postretirement benefit plans. All other assumptions used for the remeasurement were consistent with the measurement as of December 31, 2018.

Funded Status

The following table is a reconciliation of the fair value of plan assets for the year ended December 31 (in millions):

PensionOther Postretirement
20192019
Plan assets at fair value, beginning of year$1,656 $311 
Dominion Energy Gas Restructuring(1,084)(126)
Employer contributions12 
Actual return on plan assets129 38 
Benefits paid(15)(8)
Plan assets at fair value, end of year$686 $227 

The following table is a reconciliation of the benefit obligations for the year ended December 31 (in millions):

PensionOther Postretirement
20192019
Benefit obligation, beginning of year$730 $256 
Dominion Energy Gas Restructuring(468)(135)
Service cost
Interest cost11 
Actuarial loss30 
Settlement
Benefits paid(15)(8)
Benefit obligation, end of year$295 $121 


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The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):

PensionOther Postretirement
20192019
Plan assets at fair value, end of year$686 $227 
Less - Benefit obligation, end of year295 121 
Funded status$391 $106 
Amounts recognized on the Consolidated Balance Sheets:
Other assets$391 $106 
Amounts recognized$391 $106 
Significant assumptions used to determine benefit obligations:
Discount rate3.63 %3.44 %
Weighted average rate of increase for compensation4.64 %n/a

The accumulated benefit obligation for the defined benefit pension plans covering Eastern Energy Gas employees represented by collective bargaining units was $279 million as of December 31, 2019.

Plan Assets

Investment Policy and Asset Allocations

DEI's overall objective for investing its pension and other postretirement plan assets is to achieve appropriate long-term rates of return commensurate with prudent levels of risk. As a participating employer in various pension plans sponsored by DEI, Eastern Energy Gas was subject to DEI's investment policies for such plans. To minimize risk, funds are broadly diversified among asset classes, investment strategies and investment advisors. The strategic target asset allocations for DEI's pension funds were 28% U.S. equity, 18% non-U.S. equity, 35% fixed income, 3% real estate and 16% other alternative investments. U.S. equity includes investments in large-cap, mid-cap and small-cap companies located in the U.S. Non-U.S. equity includes investments in large-cap and small-cap companies located outside of the U.S. including both developed and emerging markets. Fixed income includes corporate debt instruments of companies from diversified industries and U.S. Treasuries. The U.S. equity, non-U.S. equity and fixed income investments are in individual securities as well as mutual funds. Real estate includes equity real estate investment trusts and investments in partnerships. Other alternative investments include partnership investments in private equity, debt and hedge funds that follow several different strategies.

DEI also utilizes common/collective trust funds as an investment vehicle for its defined benefit plans. A common/collective trust fund is a pooled fund operated by a bank or trust company for investment of the assets of various organizations and individuals in a well-diversified portfolio. Common/collective trust funds are funds of grouped assets that follow various investment strategies.

Strategic investment policies are established for DEI's prefunded benefit plans based upon periodic asset/liability studies. Factors considered in setting the investment policy include employee demographics, liability growth rates, future discount rates, the funded status of the plans and the expected long-term rate of return on plan assets. Deviations from the plans' strategic allocation are a function of DEI's assessments regarding short-term risk and reward opportunities in the capital markets and/or short-term market movements which result in the plans' actual asset allocations varying from the strategic target asset allocations. Through periodic rebalancing, actual allocations are brought back in line with the target. Future asset/liability studies will focus on strategies to further reduce pension and other postretirement plan risk, while still achieving attractive levels of returns. Financial derivatives may be used to obtain or manage market exposures and to hedge assets and liabilities.


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Fair Value Measurements

The following table presents the fair value of plan assets, by major category, for Eastern Energy Gas' defined benefit pension plan as of December 31, 2019 (in millions):

Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
Cash and cash equivalents$$$$
Debt securities:
United States government obligations59 61 
Corporate obligations66 69 
Insurance contracts28 28 
Equity securities:
United States equity securities177 177 
International equity securities114 114 
Total assets in the fair value hierarchy$297 $153 $450 
Investment funds measured at net asset value238 
Investments at fair value$688 

(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.


The following table presents the fair value of plan assets, by major category, for Eastern Energy Gas' defined benefit other postretirement plan as of December 31, 2019 (in millions):

Input Levels for Fair Value Measurements
Level 1(1)
Level 2(1)
Level 3(1)
Total
Equity securities:
United States equity securities$86 $$$86 
International equity securities21 21 
Total assets in the fair value hierarchy$107 $$107 
Investment funds measured at net asset value120 
Investments at fair value$227 

(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.
For Level 1 investments, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. For Level 2 investments, the fair value is determined using pricing models based on observable market inputs. Shares of mutual funds not registered under the Securities Act of 1933, private equity limited partnership interests, common and commingled trust funds and investment entities are reported at fair value based on the net asset value per unit, which is used for expedience purposes. A fund's net asset value is based on the fair value of the underlying assets held by the fund less its liabilities.


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Net Periodic Benefit Cost

Net periodic benefit cost for the plans included the following components for the years ended December 31 (in millions):

PensionOther Postretirement
202020192018202020192018
Service cost$$$18 $$$
Interest cost11 29 11 
Expected return on plan assets(47)(54)(150)(16)(16)(28)
Settlement
Net amortization19 (3)(2)(1)
Net periodic benefit cost (credit)$(29)$(29)$(84)$(14)$(11)$(14)

Significant assumptions used to determine periodic credits for the years ended December 31:

PensionOther Postretirement
202020192018202020192018
Discount rate3.16% - 3.63%4.10% - 4.42%3.81 %3.44 %4.05% - 4.37%3.81 %
Expected long-term rate of return on plan assets8.60 %8.65 %8.75 %8.50 %8.50 %8.50 %
Weighted average rate of increase for compensation4.73 %4.55 %4.11 %n/an/an/a
Healthcare cost trend rate6.50 %6.50 %7.00 %
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)5.00 %5.00 %5.00 %
Year that the rate reached the ultimate trend rate202620252022

Unrecognized Amounts

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):
PensionOther Postretirement
20192019
Net loss$150 $44 
Prior service cost (credit)(49)
Total(1)
$150 $(5)

(1)As of December 31, 2019, of the $150 million related to pension benefits, $147 million is included in AOCI, with the remainder included in regulatory assets and liabilities and the $(5) million related to other postretirement benefits is included entirely in regulatory assets and liabilities.



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Defined Contribution Plans

Eastern Energy Gas participated in the BHE GT&S, LLC ("BHE GT&S") defined contribution employee savings plan subsequent to the GT&S Transaction and the DEI defined contribution employee savings plans prior to the GT&S Transaction. Eastern Energy Gas' matching contributions are based on each participant's level of contribution. Contributions cannot exceed the maximum allowable for tax purposes. Eastern Energy Gas' contributions to the 401(k) plan were $4 million, $4 million and $8 million for the years ended December 31, 2020, 2019 and 2018, respectively.

(13)    Asset Retirement Obligations

Eastern Energy Gas estimates its ARO liabilities based upon detailed engineering calculations of the amount and timing of the future cash spending for a third party to perform the required work. Spending estimates are escalated for inflation and then discounted at a credit-adjusted, risk-free rate. Changes in estimates could occur for a number of reasons, including changes in laws and regulations, plan revisions, inflation and changes in the amount and timing of the expected work.

Eastern Energy Gas does not recognize liabilities for AROs for which the fair value cannot be reasonably estimated. Due to the indeterminate removal date, the fair value of the associated liabilities on the Cove Point LNG facility, interim removal of natural gas pipelines and certain storage wells in EGTS' underground natural gas storage network cannot currently be estimated, and no amounts are recognized on the Consolidated Financial Statements other than those included in the cost of removal regulatory liability established via approved depreciation rates in accordance with accepted regulatory practices. Cost of removal regulatory liabilities totaled $88 million and $73 million as of December 31, 2020 and 2019, respectively. Eastern Energy Gas will continue to monitor operational and strategic developments to identify if sufficient information exists to reasonably estimate a retirement date for these assets.

The following table reconciles the beginning and ending balances of Eastern Energy Gas' ARO liabilities for the years ended December 31 (in millions):

20202019
Beginning balance$89 $88 
Change in estimated costs(51)
Additions48 
Retirements(3)(3)
Disposal of Questar Pipeline Group(16)
Accretion
Ending balance$71 $89 
Reflected as:
Other current liabilities$36 $14 
Other long-term liabilities35 75 
Total ARO liability$71 $89 

(14)    Risk Management and Hedging Activities

Eastern Energy Gas is exposed to the impact of market fluctuations in commodity prices, interest rates, and foreign currency exchange rates. Eastern Energy Gas is principally exposed to natural gas market fluctuations primarily through fuel retained and used during the operation of the pipeline system as well as lost and unaccounted for gas, to interest rate risk on its outstanding variable-rate short- and long-term debt and future debt issuances, and to foreign currency exchange risk associated with Euro denominated debt. Eastern Energy Gas has established a risk management process that is designed to identify, assess, manage, mitigate, monitor and report, each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, Eastern Energy Gas uses over-the-counter commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. Eastern Energy Gas also uses over-the-counter interest rate swaps to hedge its exposure to variable interest rates on long-term debt as well as over-the-counter foreign currency swaps to hedge its exposure to principal and interest payments denominated in Euros. Eastern Energy Gas does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices.
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Subsequent to the GT&S Transaction, Eastern Energy Gas has elected to offset derivative contracts where master netting arrangements allow. There have been no other significant changes in Eastern Energy Gas' accounting policies related to derivatives. Refer to Notes 2 and 15 for additional information on derivative contracts.

The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of Eastern Energy Gas' derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions):

OtherOtherOther
CurrentOtherCurrentLong-term
AssetsAssetsLiabilitiesLiabilitiesTotal
As of December 31, 2020:
Designated as hedging contracts:
Interest rate contracts$$$(6)$$(6)
Foreign currency contracts20 (2)18 
Not designated as hedging contracts:
Commodity contracts(1)(1)
Total20 (9)11 
Total derivatives20 (9)11 
Cash collateral receivable
Total - net basis$$20 $(9)$$11 
As of December 31, 2019:
Designated as hedging contracts:
Interest rate contracts$$$(30)$(53)$(83)
Foreign currency contracts(3)
Total(33)(53)(78)
Total derivatives(33)(53)(78)
Cash collateral receivable
Total - net basis$$$(33)$(53)$(78)

AOCI

The following table presents selected information related to losses on cash flow hedges included in AOCI in Eastern Energy Gas' Consolidated Balance Sheet as of December 31, 2020 (in millions):

AOCI After-TaxAmounts Expected to be Reclassified to Earnings During the Next 12 Months After-TaxMaximum Term
Interest rate$(45)$(5)288 months
Foreign currency(6)(2)66 months
Total$(51)$(7)

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The amounts that will be reclassified from AOCI to earnings will generally be offset by the recognition of the hedged transactions (e.g., interest payments) in earnings, thereby achieving the realization of prices contemplated by the underlying risk management strategies and will vary from the expected amounts presented above as a result of changes in interest rates and foreign currency exchange rates.

In July 2020, Eastern Energy Gas recorded a loss of $141 million ($105 million after-tax) in interest expense in the Consolidated Statement of Operations, for cash flow hedges of debt-related items that are probable of not occurring as a result of the GT&S Transaction. The derivatives related to these hedges were settled in October 2020 for a cash payment of $165 million.

Gains and Losses on Derivative Contracts

The following tables present the gains and losses on Eastern Energy Gas' derivatives, as well as where the associated activity is presented in its Consolidated Balance Sheets and Consolidated Statements of Operations for the years ended December 31 (in millions):

Derivatives in cash flow hedging relationships
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)(1)
Amount of Gain (Loss) Reclassified from AOCI to Income
2020
Derivative type and location of gains (losses):
Interest rate(2)
$(104)$(157)
Foreign currency(3)
12 25 
Total$(92)$(132)
2019
Derivative type and location of gains (losses):
Commodity:
Net income from discontinued operations$
Total commodity$$
Interest rate(2)
(68)(5)
Foreign currency(3)
(18)(6)
Total$(85)$(7)
2018
Derivative type and location of gains (losses):
Commodity:
Net income from discontinued operations$(8)
Total commodity$$(8)
Interest rate(2)
(16)(5)
Foreign currency(3)
(6)(13)
Total$(21)$(26)

(1)Amounts deferred into AOCI have no associated effect in Eastern Energy Gas' Consolidated Statements of Operations.

(2)Amounts recorded in Eastern Energy Gas' Consolidated Statements of Operations are classified in interest expense.

(3)Amounts recorded in Eastern Energy Gas' Consolidated Statements of Operations are classified in other, net.


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Amount of Gain (Loss) Recognized in Income on Derivatives
Derivatives not designated as hedging instruments202020192018
Derivative type and location of gains (losses):
Interest rate(1)
$$$
Commodity:
Operating revenue(1)(11)
Total$$$(11)

(1)Amounts recorded in Eastern Energy Gas' Consolidated Statements of Operations are classified in interest expense.

Derivative Contract Volumes

The following table summarizes the net notional amounts of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values as of December 31 (in millions):

Unit of
Measure20202019
Interest rateU.S. $500 1,300 
Foreign currencyEuro €250 250 
Natural gasDth

Credit Risk

Eastern Energy Gas is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Eastern Energy Gas' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, Eastern Energy Gas analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, Eastern Energy Gas enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, Eastern Energy Gas exercises rights under these arrangements, including calling on the counterparty's credit support arrangement.

Upon the Cove Point LNG export/liquefaction facility commencing commercial operations in April 2018, the majority of Cove Point's revenue and earnings are from annual reservation payments under certain terminalling, storage and transportation contracts with ST Cove Point, LLC, a joint venture of Sumitomo Corporation and Tokyo Gas Co., LTD., and GAIL Global (USA) LNG, LLC (the "Export Customers"). If such agreements were terminated and Cove Point was unable to replace such agreements on comparable terms, there could be a material impact on results of operations, financial condition and/or cash flows.

The Export Customers comprised approximately 34% of Eastern Energy Gas' operating revenues for both of the years ended December 31, 2020 and 2019, with Eastern Energy Gas' largest customer representing approximately 17% of such amounts.

For the year ended December 31, 2020, EGTS provided service to 289 customers with approximately 98% of its storage and transportation revenue being provided through firm services. The ten largest customers provided approximately 37% of the total storage and transportation revenue and the thirty largest provided approximately 69% of the total storage and transportation revenue.

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(15)    Fair Value Measurements

The carrying value of Eastern Energy Gas' cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Eastern Energy Gas has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows:

Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Eastern Energy Gas has the ability to access at the measurement date.
Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).
Level 3 - Unobservable inputs reflect Eastern Energy Gas' judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Eastern Energy Gas develops these inputs based on the best information available, including its own data.

Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchase or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Eastern Energy Gas transacts. When quoted prices for identical contracts are not available, Eastern Energy Gas uses forward price curves. Forward price curves represent Eastern Energy Gas' estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Eastern Energy Gas bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by Eastern Energy Gas. Market price quotations are generally readily obtainable for the applicable term of Eastern Energy Gas' outstanding derivative contracts; therefore, Eastern Energy Gas' forward price curves reflect observable market quotes. Market price quotations for certain natural gas trading hubs are not as readily obtainable due to the length of the contracts. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, Eastern Energy Gas uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. All of Eastern Energy Gas' derivatives are considered Level 2 in the fair value hierarchy.

Eastern Energy Gas' long-term debt is carried at cost, including unamortized premiums, discounts and debt issuance costs as applicable, on the Consolidated Financial Statements. The fair value of Eastern Energy Gas' long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Eastern Energy Gas' variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Eastern Energy Gas' long-term debt as of December 31 (in millions):

20202019
CarryingFairCarryingFair
ValueValueValueValue
Long-term debt$4,425 $5,012 $5,520 $5,738 

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(16)    Commitments and Contingencies

Environmental Laws and Regulations

Eastern Energy Gas is subject to federal, state and local laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Eastern Energy Gas' current and future operations. Eastern Energy Gas believes it is in material compliance with all applicable laws and regulations.

Air

Revisions to Ozone National Ambient Air Quality Ozone Standards

The Clean Air Act includes National Ambient Air Quality Standards ("NAAQS"). States adopt rules that ensure their air quality meets the NAAQS. In October 2015, the United States Environmental Protection Agency ("EPA") published a rule lowering the ground level ozone NAAQS for non-attainment designations. States have until August 2021 to develop plans to address the new standard. Until the states have developed implementation plans for the standard, Eastern Energy Gas is unable to predict whether or to what extent the new rules will ultimately require additional controls. The expenditures required to implement additional controls could have a material impact on Eastern Energy Gas' results of operations and cash flows.

Oil and Gas New Source Performance Standards

In August 2020, the EPA issued two final amendments related to the reconsideration of the New Source Performance Standard ("NSPS") for the oil and natural gas sector applicable to volatile organic compound and methane emissions. Together, the two amendments have the effect of rescinding the methane portion of the NSPS for all segments of the oil and natural gas sector, rescinding all NSPS for the transmission and storage segment and modifying some of the NSPS volatile organic compound requirements for facilities in the production and processing segments. The two amendments have been challenged in the United States Court of Appeals for the District of Columbia Circuit but remain in effect pending the outcome of the litigation. Eastern Energy Gas is still evaluating whether potential impacts on results of operations, financial condition and/or cash flows related to this matter will be material.

Carbon Regulations

In August 2016, the EPA issued a draft rule proposing to reaffirm that a source's obligation to obtain a prevention of significant deterioration or Title V permit for greenhouse gases ("GHG") is triggered only if such permitting requirements are first triggered by non-GHG, or conventional, pollutants that are regulated by the New Source Review program, and to set a significant emissions rate at 75,000 tons per year of carbon dioxide equivalent emissions under which a source would not be required to apply best available control technology for its GHG emissions. Until the EPA ultimately takes final action on this rulemaking, Eastern Energy Gas cannot predict the impact to its results of operations, financial condition and/or cash flows.

Other Legal Matters

Eastern Energy Gas is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Eastern Energy Gas does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.

Surety Bonds

As of December 31, 2020, Eastern Energy Gas had purchased $22 million of surety bonds. Under the terms of surety bonds, BHE is obligated to indemnify the respective surety bond company for any amounts paid.


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(17)    Revenue from Contracts with Customers

Eastern Energy Gas uses a single five-step model to identify and recognize revenue from contracts with customers upon transfer of control of promised goods or services in an amount that reflects the consideration to which Eastern Energy Gas expects to be entitled in exchange for those goods or services. The following table summarizes Eastern Energy Gas' energy products and services revenue by regulated and nonregulated for the years ended December 31 (in millions):

202020192018
Customer Revenue:
Regulated:
Gas transportation and storage$1,242 $1,300 $1,249 
Wholesale43 25 
Other19 
Total regulated1,289 1,316 1,293 
Nonregulated798 849 709 
Total Customer Revenue2,087 2,165 2,002 
Other revenue(6)
Total operating revenue$2,090 $2,169 $1,996 

Remaining Performance Obligations

The following table summarizes Eastern Energy Gas' revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of December 31, 2020 (in millions):

Performance obligations expected to be satisfied
Less than 12 monthsMore than 12 monthsTotal
Eastern Energy Gas$1,575 $17,073 $18,648 


(18)    Components of Accumulated Other Comprehensive Loss, Net

The following table shows the change in accumulated other comprehensive loss by each component of other comprehensive income (loss), net of applicable income taxes, for the year ended December 31 (in millions):

UnrecognizedUnrealizedAccumulated
Amounts OnLosses OnOther
RetirementCash FlowNoncontrollingComprehensive
BenefitsHedgesInterestsLoss
Balance, December 31, 2017$(75)$(23)$$(98)
Other comprehensive (loss) income(69)(2)(71)
Balance, December 31, 2018(144)(25)(169)
Other comprehensive income (loss)38 (56)(18)
Balance, December 31, 2019(106)(81)(187)
Other comprehensive income94 30 10134 
Balance, December 31, 2020$(12)$(51)$10 $(53)


455


The following table shows the reclassifications from AOCI to net income for the year ended December 31 (in millions):

(1)Consists principallyAffected Line
Item In The
AmountsConsolidated
ReclassifiedStatements of cash
From AOCIOperations
2020
Deferred (gains) and cash equivalents not included in either the regulated electric or regulated natural gas segments.losses on derivatives-hedging activities:
Interest rate contracts$157 Interest expense
Foreign currency contracts(25)Other, net
Total132 
Tax(34)Income tax (benefit) expense
Total, net of tax$98 
Unrecognized pension costs:
Actuarial losses$Other, net
Total
Tax(2)Income tax (benefit) expense
Total, net of tax$
2019
Deferred (gains) and losses on derivatives-hedging activities:
Commodity contracts$(4)Net income from discontinued operations
Interest rate contractsInterest expense
Foreign currency contractsOther, net
Total
Tax(2)Income tax (benefit) expense
Total, net of tax$
Unrecognized pension costs:
Actuarial losses$Other, net
Total
Tax(2)Income tax (benefit) expense
Total, net of tax$
2018
Deferred (gains) and losses on derivatives-hedging activities:
Commodity contracts$Net income from discontinued operations
Interest rate contractsInterest expense
Foreign currency contracts13 Other, net
Total26 
Tax(7)Income tax (benefit) expense
Total, net of tax$19 
Unrecognized pension costs:
Actuarial losses$Other, net
Total
Tax(2)Income tax (benefit) expense
Total, net of tax$

456
(16)    Unaudited Quarterly Operating Results


(19)    Variable Interest Entities

The primary beneficiary of a variable interest entity ("VIE") is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both 1) the power to direct the activities that most significantly impact the entity's economic performance and 2) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE.

As part of the Dominion Energy Gas Restructuring, DEI contributed to Eastern Energy Gas a 75% controlling limited partner interest in Cove Point. In December 2019, DEI sold its retained 25% noncontrolling limited partner interest in Cove Point. As discussed in Note 3, as part of the GT&S Transaction, Eastern Energy Gas finalized a restructuring which included the disposition of a 50% noncontrolling interest in Cove Point to DEI, which resulted in Eastern Energy Gas owning 100% of the general partner interest and 25% of the limited partnership interest in Cove Point. Eastern Energy Gas concluded that Cove Point is a VIE due to the limited partners lacking the characteristics of a controlling financial interest. Eastern Energy Gas is the primary beneficiary of Cove Point as it has the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to it.

Eastern Energy Gas purchased shared services from Carolina Gas Services, Inc. ("Carolina Gas Services") an affiliated VIE, of $12 million, $16 million and $16 million for the years ended December 31, 2020, 2019 and 2018, respectively. Eastern Energy Gas' Consolidated Balance Sheets included amounts due to Carolina Gas Services of $22 million and $9 million as of December 31, 2020 and 2019 respectively. Eastern Energy Gas determined that neither it nor any of its consolidated entities is the primary beneficiary of Carolina Gas Services as neither it nor any of its consolidated entities has both the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to them. Carolina Gas Services provides marketing and operational services. Neither Eastern Energy Gas nor any of its consolidated entities has any obligation to absorb more than its allocated share of Carolina Gas Services costs.

Prior to the GT&S Transaction, Eastern Energy Gas purchased shared services from Dominion Energy Questar Pipeline Services, Inc. ("DEQPS"), an affiliated VIE, of $23 million, $33 million and $29 million for the years ended December 31, 2020, 2019 and 2018, respectively. Eastern Energy Gas' Consolidated Balance Sheet included amounts due to DEQPS of $6 million as of December 31, 2019. Eastern Energy Gas determined that neither it nor any of its consolidated entities was the primary beneficiary of DEQPS, as neither it nor any of its consolidated entities has both the power to direct the activities that most significantly impact their economic performance as well as the obligation to absorb losses and benefits which could be significant to them. DEQPS provided marketing and operational services. Neither Eastern Energy Gas nor any of its consolidated entities had any obligation to absorb more than its allocated share of DEQPS costs.

Prior to the GT&S Transaction, Eastern Energy Gas purchased shared services from Dominion Energy Services, Inc. ("DES"), an affiliated VIE, of $90 million, $119 million and $106 million for the years ended December 31, 2020, 2019 and 2018, respectively. Eastern Energy Gas' Consolidated Balance Sheets included amounts due to DES of $27 million as of December 31, 2019. Eastern Energy Gas determined that neither it nor any of its consolidated entities was the primary beneficiary of DES as neither it nor any of its consolidated entities had both the power to direct the activities that most significantly impact their economic performance as well as the obligation to absorb losses and benefits which could be significant to them. DES provided accounting, legal, finance and certain administrative and technical services. Neither Eastern Energy Gas nor any of its consolidated entities had any obligation to absorb more than its allocated share of DES costs.

(20)    Noncontrolling Interests

Included in noncontrolling interests in the Consolidated Financial Statements are DEI's 50% interest in Cove Point (effective November 2020), Brookfield's 25% interest in Cove Point (effective December 2019) and the public's ownership interest in Northeast Midstream (through January 2019).

Noncontrolling Interest in Northeast Midstream

Northeast Midstream was a publicly traded master limited partnership that included common units, subordinated units, Series A Preferred Units and incentive distribution rights as its participating securities. In accordance with the partnership agreement, when the subordination period ended, all subordinated units converted into common units on a one-for-one basis and participated pro rata with the other common units in distributions.


457


In May 2018, all of the subordinated units of Northeast Midstream held by DEI were converted into common units on a 1:1 ratio following the payment of Northeast Midstream's distribution for the first quarter of 2018. In June 2018, DEI, as general partner, exercised an incentive distribution right reset as defined in Northeast Midstream's partnership agreement and received 27 million common units representing limited partner interests in Northeast Midstream. As a result of the increase in its ownership interest in Northeast Midstream, DEI recorded a decrease in noncontrolling interest, and a corresponding increase in shareholders' equity, of $375 million reflecting the change in the carrying value of the interest in the net assets of Northeast Midstream held by others.

In January 2019, DEI and Northeast Midstream closed on an agreement and plan of merger pursuant to which DEI acquired each outstanding common unit representing limited partner interests in Northeast Midstream not already owned by DEI through the issuance of 22.5 million shares of common stock valued at $1.6 billion. Under the terms of the agreement and plan of merger, each publicly held outstanding common unit representing limited partner interests in Northeast Midstream was converted into the right to receive 0.2492 shares of DEI common stock. Immediately prior to the closing, each Series A Preferred Unit representing limited partner interests in Northeast Midstream was converted into common units representing limited partner interests in Northeast Midstream in accordance with the terms of Northeast Midstream's partnership agreement. The merger was accounted for by DEI following the guidance for a change in a parent company's ownership interest in a consolidated subsidiary. Because DEI controlled Northeast Midstream both before and after the merger, the changes in DEI's ownership interest in Northeast Midstream were accounted for as an equity transaction and no gain or loss was recognized. In connection with the merger, DEI recognized $40 million of income taxes in equity primarily attributable to establishing additional regulatory liabilities related to excess deferred income taxes and changes in state income taxes.

Subsequent to this activity, as a result of the Dominion Energy Gas Restructuring, Eastern Energy Gas is considered to have acquired all of the outstanding partnership interests of Northeast Midstream and Northeast Midstream became a wholly-owned subsidiary of Eastern Energy Gas.

(21)    Supplemental Cash Flow Disclosures

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019 consist substantially of customer deposits. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2020 and December 31, 2019, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):


As of
December 31,December 31,
20202019
Cash and cash equivalents$35 $27 
Restricted cash and cash equivalents13 12 
Total cash and cash equivalents and restricted cash and cash equivalents$48 $39 
458


 Three-Month Periods Ended
 March 31, June 30, September 30, December 31,
 2017 2017 2017 2017
Regulated electric operating revenue$159
 $160
 $215
 $179
Regulated natural gas operating revenue34
 17
 15
 33
Operating income46
 36
 75
 41
Net income24
 17
 44
 24
        
 Three-Month Periods Ended
 March 31, June 30, September 30, December 31,
 2016 2016 2016 2016
Regulated electric operating revenue$170
 $162
 $207
 $163
Regulated natural gas operating revenue47
 19
 15
 29
Operating income41
 28
 69
 42
Net income17
 10
 38
 19
The summary of supplemental cash flow disclosures as of and for the years ending December 31 is as follows (in millions):



202020192018
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$317 $291 $162 
Income taxes paid$31 $65 $79 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$30 $25 $59 
Distribution of Questar Pipeline Group$(699)$$
Distribution of 50% interest in Cove Point$(2,765)$$
Acquisition of Eastern Energy Gas by BHE$343 $$
Equity contributions$$$23 

(22)    Related-Party Transactions

Transactions Prior to the GT&S Transaction

Prior to the GT&S Transaction, Eastern Energy Gas engaged in related party transactions primarily with other DEI subsidiaries (affiliates). Eastern Energy Gas' receivable and payable balances with affiliates were settled based on contractual terms or on a monthly basis, depending on the nature of the underlying transactions. Through October 31, 2020, Eastern Energy Gas was included in DEI's consolidated federal income tax return and, where applicable, combined income tax returns for DEI are filed in various states. As of December 31, 2019, Eastern Energy Gas had a net affiliated receivable of $209 million due from DEI, representing $212 million of federal income taxes receivable from DEI and $3 million of state income taxes payable to DEI. In addition, Eastern Energy Gas' Consolidated Balance Sheet as of December 31, 2019 includes $10 million of state income taxes receivable. All affiliate payables or receivables were settled with DEI prior to the closing date of the GT&S Transaction.

Eastern Energy Gas transacted with affiliates for certain quantities of natural gas and other commodities at market prices in the ordinary course of business. Additionally, Eastern Energy Gas provided transportation and storage services to affiliates. Eastern Energy Gas also entered into certain other contracts with affiliates, and related parties, including construction services, which were presented separately from contracts involving commodities or services. As of December 31, 2019, Eastern Energy Gas did not have any commodity derivative assets and liabilities with affiliates. See Notes 14 and 18 for more information. See Note 3 for information regarding the Dominion Energy Gas Restructuring, an affiliated transaction. Eastern Energy Gas participated in certain DEI benefit plans as described in Note 12. As of December 31, 2019, Eastern Energy Gas' amount due from DEI associated with the Dominion Energy Pension Plan and reflected in other assets on the Consolidated Balance Sheet was $326 million. Eastern Energy Gas' amount due from DEI associated with the Dominion Energy Retiree Health and Welfare Plan and reflected in other assets on the Consolidated Balance Sheet was $17 million as of December 31, 2019.

DES, Carolina Gas Services, DEQPS and other affiliates provided accounting, legal, finance and certain administrative and technical services to Eastern Energy Gas. Eastern Energy Gas provided certain services to related parties, including technical services.

The financial statements for all years presented include costs for certain general, administrative and corporate expenses assigned by DES, Carolina Gas Services and DEQPS to Eastern Energy Gas on the basis of direct and allocated methods in accordance with Eastern Energy Gas' services agreements with DES, Carolina Gas Services and DEQPS. Where costs incurred cannot be determined by specific identification, the costs were allocated based on the proportional level of effort devoted by DES, Carolina Gas Services and DEQPS resources that is attributable to the entity, determined by reference to number of employees, salaries and wages and other similar measures for the relevant DES service. Management believes the assumptions and methodologies underlying the allocation of general corporate overhead expenses are reasonable.

Subsequent to the GT&S Transaction, and with the exception of Cove Point, Eastern Energy Gas' transactions with other DEI subsidiaries are no longer related-party transactions.


459


Presented below are Eastern Energy Gas' significant transactions with DES, Carolina Gas Services, DEQPS and other affiliated and related parties for the years ended December 31 (in millions):
202020192018
Sales of natural gas and transportation and storage services$207 $249 $168 
Purchases of natural gas and transportation and storage services10 12 
Services provided by related parties(1)
129 226 169 
Services provided to related parties(2)
83 164 260 
(1)Includes capitalized expenditures of $14 million, $19 million and $37 million for the years ended December 31, 2020, 2019 and 2018, respectively.

(2)Includes amounts attributable to Atlantic Coast Pipeline, a related-party VIE prior to the GT&S Transaction. See below for more information.

The following table presents affiliated and related party balances as of December 31 (in millions):

2019
Other receivables(1)
$
Imbalances receivable from affiliates(2)
Imbalances payable to affiliates(3)
Other assets12 
(1)Represents amounts due from Atlantic Coast Pipeline.

(2)Amounts are presented in other current assets on the Consolidated Balance Sheet.

(3)Amounts are presented in other current liabilities on the Consolidated Balance Sheet.


EGTS provided services to Atlantic Coast Pipeline, which totaled $46 million, $103 million and $203 million for the years ended December 31, 2020, 2019 and 2018, respectively, included in operating revenue in the Consolidated Statements of Operations.

Trade receivables, net as of December 31, 2019 included $22 million of accrued unbilled revenue, respectively. This revenue is based on estimated amounts of services provided but not yet billed to various affiliates.

Interest income related to the affiliated notes receivable under the DEI money pool was $3 million for the year ended December 31, 2020.

Interest income on affiliated notes receivable from East Ohio and EGP borrowings under intercompany revolving credit agreements with Eastern Energy Gas was $14 million and $15 million for the years ended December 31, 2019 and 2018, respectively.

In 2018, in connection with the closing of a $3.0 billion term loan, Cove Point loaned DEI $3.0 billion in exchange for a promissory note. Interest income related to DEI's borrowing was $82 million and $21 million for the years ended December 31, 2019 and 2018, respectively. In September 2019, DEI repaid the promissory note to Cove Point and the proceeds were used by Cove Point to repay its $3.0 billion term loan.

Eastern Energy Gas' affiliated notes receivable from DEI totaled $1.8 billion as of December 31, 2019. In August 2020, DEI repaid the remaining principal balance outstanding. Interest income on the promissory notes was $32 million and $5 million for the years ended December 31, 2020 and 2019, respectively.

As of December 31, 2019, Eastern Energy Gas' affiliated notes receivable from East Ohio totaled $1.7 billion. In June 2020, East Ohio repaid the remaining principal balance outstanding. Interest income on these promissory notes was $33 million, $72 million and $64 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Eastern Energy Gas' borrowings under an intercompany revolving credit agreement with DEI totaled $251 million as of December 31, 2019, with a weighted average interest rate of 2.02%. Interest charges related to Eastern Energy Gas' total borrowings from DEI were $3 million, $3 million and less than $1 million for the years ended December 31, 2020, 2019 and 2018, respectively.

460


Interest charges related to DCP's total borrowings from DEI totaled $94 million and $96 million for the years ended December 31, 2019 and 2018, respectively.

DCP had borrowings of $9 million with DES as of December 31, 2019, with a weighted-average interest rate of 3.85%. Interest related to DCP's total borrowings from DES totaled $3 million, $3 million and $1 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Interest charges related to Northeast Midstream's promissory note with DEI were $10 million for the year ended December 31, 2019.

For the years ended December 31, 2020, 2019 and 2018, Eastern Energy Gas, including entities acquired in the Dominion Energy Gas Restructuring, distributed $4.3 billion, $603 million and $230 million to DEI, respectively.

Transactions Subsequent to the GT&S Transaction

Eastern Energy Gas is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, Eastern Energy Gas had a receivable from BHE of $20 million as of December 31, 2020. Eastern Energy Gas received net cash receipts for federal and state income taxes from BHE totaling $76 million for the year ended December 31, 2020.

DEI, BHE, MidAmerican Energy, Northern Natural Gas Company and other related parties provided accounting, human resources, information technology and certain other administrative and technical services to Eastern Energy Gas, which totaled $4 million for the year ended December 31, 2020. Eastern Energy Gas provided certain services to affiliates, including administrative and technical services, which totaled $7 million for the year ended December 31, 2020. Eastern Energy Gas also provided transportation and storage services to affiliates, which totaled $4 million for the year ended December 31, 2020. Other assets included amounts due from an affiliate of $7 million as of December 31, 2020.

Eastern Energy Gas has a $400 million intercompany revolving credit agreement from its parent, BHE GT&S, expiring in November 2021. The credit facility, which is for general corporate purposes and provide for the issuance of letters of credit, has a variable interest rate based on London Interbank Offered Rate ("LIBOR") plus a fixed spread. As of December 31, 2020, $9 million was outstanding under the credit agreement, with a weighted average interest rate of 0.55%.

BHE GT&S has a $200 million intercompany revolving credit agreement from Eastern Energy Gas expiring in December 2021. The credit agreement has a variable interest rate based on LIBOR plus a fixed spread. As of December 31, 2020, $124 million was outstanding under the credit agreement.

Eastern Energy Gas participates in certain MidAmerican Energy benefit plans as described in Note 12. As of December 31, 2020, Eastern Energy Gas' amount due to MidAmerican Energy associated with these plans and reflected in other long-term liabilities on the Consolidated Balance Sheet was $115 million.
461


Item 9.Changes in and Disagreements With Accountants on Accounting and Financial Disclosure


None.


Item 9A.Controls and Procedures

Item 9A.Controls and Procedures

Disclosure Controls and Procedures


At the end of the period covered by this Annual Report on Form 10-K, each of Berkshire Hathaway Energy Company, PacifiCorp, MidAmerican Funding, LLC, MidAmerican Energy Company, Nevada Power Company, and Sierra Pacific Power Company and Eastern Energy Gas Holdings, LLC carried out separate evaluations, under the supervision and with the participation of each such entity's management, including its Chief Executive Officer (principal executive officer) and its Chief Financial Officer (principal financial officer), or persons performing similar functions, of the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rule 13a-15(e) promulgated under the Securities and Exchange Act of 1934, as amended). Based upon these evaluations, management of each such entity, including its Chief Executive Officer (principal executive officer) and its Chief Financial Officer (principal financial officer), or persons performing similar functions, in each case, concluded that the disclosure controls and procedures for such entity were effective to ensure that information required to be disclosed by such entity in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC'sUnited States Securities and Exchange Commission's rules and forms, and is accumulated and communicated to its management, including its Chief Executive Officer (principal executive officer) and its Chief Financial Officer (principal financial officer), or persons performing similar functions, in each case, as appropriate to allow timely decisions regarding required disclosure by it. Each such entity hereby states that there has been no change in its internal control over financial reporting during the quarter ended December 31, 20172020 that has materially affected, or is reasonably likely to materially affect, its internal control over financial reporting.reporting, except as noted below.


As a result of Berkshire Hathaway Energy Company's acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy, Inc. and Dominion Energy Questar Corporation, exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "GT&S Transaction" or "GT&S Entities") on November 1, 2020, Berkshire Hathaway Energy Company has expanded its internal control over financial reporting to include consolidation of the GT&S Entities financial statements, as well as acquisition related accounting and disclosures.

Management's Report on Internal Control over Financial Reporting


Management of each of Berkshire Hathaway Energy Company, PacifiCorp, MidAmerican Funding, LLC, MidAmerican Energy Company, Nevada Power Company, and Sierra Pacific Power Company and Eastern Energy Gas Holdings, LLC, respectively, is responsible for establishing and maintaining, for such entity, adequate internal control over financial reporting, as such term is defined in the Securities Exchange Act of 1934 Rule 13a-15(f). Under the supervision and with the participation of management for each such entity, including its Chief Executive Officer (principal executive officer) and its Chief Financial Officer (principal financial officer), or persons performing similar functions, in each case, such management conducted an evaluation for the relevant entity of the effectiveness of internal control over financial reporting as of December 31, 2017,2020, as required by the Securities Exchange Act of 1934 Rule 13a-15(c). In making this assessment, management for each such respective entity used the criteria set forth in the framework in "Internal Control - Integrated Framework (2013)" issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on the evaluation conducted under the framework in "Internal Control - Integrated Framework (2013)," management for each such respective entity concluded that internal control over financial reporting for such entity was effective as of December 31, 2017.2020.



462


On November 1, 2020, Berkshire Hathaway Energy Company completed the acquisition of the GT&S Entities. In conducting its evaluation of the effectiveness of its internal control over financial reporting, Berkshire Hathaway Energy Company's management elected to exclude the GT&S Entities from this evaluation as permitted under United States Securities and Exchange Commission rules. The GT&S Entities constituted 10.5% of total consolidated assets as of December 31, 2020, and 1.1% of total consolidated net income attributable to BHE shareholders for the year ended December 31, 2020.

Berkshire Hathaway Energy CompanyPacifiCorpMidAmerican Funding, LLC
February 26, 2021February 26, 2021February 26, 2021
Berkshire Hathaway Energy CompanyPacifiCorpMidAmerican Funding, LLC
February 23, 2018February 23, 2018February 23, 2018
MidAmerican Energy CompanyNevada Power CompanySierra Pacific Power Company
February 23, 201826, 2021February 23, 201826, 2021February 23, 201826, 2021

Item 9B.Eastern Energy Gas Holdings, LLCOther Information
February 26, 2021


Item 9B.Other Information

None.



463


PART III


Item 10.Directors, Executive Officers and Corporate Governance

Item 10.Directors, Executive Officers and Corporate Governance

BERKSHIRE HATHAWAY ENERGY, MIDAMERICAN FUNDING, MIDAMERICAN ENERGY, NEVADA POWER, AND SIERRA PACIFIC AND EASTERN ENERGY GAS


Information required by Item 10 is omitted pursuant to General Instruction I(2)(c) to Form 10-K.


PACIFICORP


PacifiCorp is an indirect subsidiary of BHE, and its directors consist of executive management from both BHE and PacifiCorp. Each director was elected based on individual responsibilities, experience in the energy industry and functional expertise. There are no family relationships among the executive officers, nor any arrangements or understandings between any executive officer and any other person pursuant to which the executive officer was appointed. Set forth below is certain information, as of February 16, 2018,January 31, 2021, with respect to the current directors and executive officers of PacifiCorp:


WILLIAM J. FEHRMAN, 57,60, Chairman of the Board of Directors and Chief Executive Officer since January 2018. Mr. Fehrman has also been President, Chief Executive Officer and director of BHE since January 2018. Mr. Fehrman was Chief Executive Officer of MidAmerican Energy Company from 2008 to January2018January 2018 and President and director from 2007 to January 2018. Mr. Fehrman joined BHE in 2006 and has extensive executive management experience in the energy industry with strong regulatory and operational skills.


STEFAN A. BIRD, 51,54, President and Chief Executive Officer of Pacific Power and director since 2015. Mr. Bird was Senior Vice President, Commercial and Trading, of PacifiCorp Energy from 2007 to 2014. Mr. Bird joined BHE in 1998 and has significant operational, public policy and leadership experience in the energy industry, including expertise in energy supply management, resource acquisition and federal and state regulatory matters.


CINDY A. CRANE, 56,GARY W. HOOGEVEEN, 52, Director since November 2018, President since June 2018 and Chief Executive Officer since November 2018 of Rocky Mountain Power. Prior to his current positions, Mr. Hoogeveen served as Senior Vice President and Chief ExecutiveCommercial Officer of Rocky Mountain Power since November 2014 and director since 2015. Ms. Crane wasPresident and CEO of Kern River Gas Transmission Company from 2010 to 2014. He joined Kern River after serving as Vice President of Interwest MiningCustomer Service and Business Development for Northern Natural Gas Company. Prior to joining Northern Natural Gas Company, a subsidiary of PacifiCorp, from 2009 to 2014. Ms. Crane joined PacifiCorpMr. Hoogeveen held various management positions at Berkshire Hathaway Energy, joining BHE in 1990 and2000. He has significant strategy, operational, public policy and leadership experience in both the energy industry,electricity and natural gas industries, including complex commercial negotiations.customer, regulatory and government relations.


NIKKI L. KOBLIHA, 45,48, Vice President and Chief Financial Officer since 2015 and Treasurer and director since 2017. Ms. Kobliha joined PacifiCorp in 1997 and has significant financial, accounting and leadership experience in the energy industry, including expertise in financial reporting to the SEC and FERC.


PATRICK J. GOODMANCALVIN D. HAACK, 51,52, Director since 2006.May 2020. Mr. GoodmanHaack has been ExecutiveSenior Vice President and Chief Financial Officer of BHE since 2012March 2020 and was Senior Vice President and Chief Financial OfficerTreasurer of BHE from 19992010 to 2012.2020. Mr. GoodmanHaack joined BHE in 19951997 and has significant financial experience, including expertise in mergers and acquisitions, accounting, treasury and tax functions. Mr. GoodmanHaack is also a manager of MidAmerican Funding, LLC.


NATALIE L. HOCKEN, 48,51, Director since 2007. Ms. Hocken has been Senior Vice President and General Counsel of BHE since 2015 and Corporate Secretary since 2017. Ms. Hocken was Senior Vice President, Transmission and System Operations of PacifiCorp from 2012 to 2015 and Vice President and General Counsel of Pacific Power from 2007 to 2012. Ms. Hocken joined PacifiCorp in 2002 and has significant experience in the utility industry, including expertise in transmission, legal matters and federal and state regulatory matters. Ms. Hocken is also a manager of MidAmerican Funding, LLC.


Board's Role in the Risk Oversight Process


PacifiCorp's Board of Directors is comprised of a combination of BHE senior executives and PacifiCorp senior management who have direct and indirect responsibility for the management and oversight of risk. PacifiCorp's Board of Directors has not established a separate risk management and oversight committee.


464


Audit Committee and Audit Committee Financial Expert


During the year ended December 31, 2017,2020, and as of the date of this Annual Report on Form 10-K, PacifiCorp's Board of Directors did not have an audit committee. PacifiCorp is not required to have an audit committee as its common stock is indirectly and wholly owned by BHE. However, the audit committee of BHE acts as the audit committee for PacifiCorp.


Code of Ethics


PacifiCorp has adopted a code of ethics that applies to its principal executive officer, its principal financial and accounting officer, or persons acting in such capacities, and certain other covered officers. The code of ethics is incorporated by reference in the exhibits to this Annual Report on Form 10-K.


Item 11.Executive Compensation

Item 11.Executive Compensation

BERKSHIRE HATHAWAY ENERGY, MIDAMERICAN FUNDING, MIDAMERICAN ENERGY, NEVADA POWER, AND SIERRA PACIFIC AND EASTERN ENERGY GAS


Information required by Item 11 is omitted pursuant to General Instruction I(2)(c) to Form 10-K.


PACIFICORP


Compensation Discussion and Analysis


Compensation Philosophy and Overall Objectives


Mr. Gregory E. Abel,William J. Fehrman, PacifiCorp's Chairman of the Board of Directors and Chief Executive Officer, or Chairman and CEO, received no direct compensation from PacifiCorp. PacifiCorp reimbursed its indirect parent company, BHE, for the cost of Mr. Abel'sFehrman's time spent on matters supporting PacifiCorp, including compensation paid to him by BHE, pursuant to an intercompany administrative services agreement among BHE and its subsidiaries. On January 10, 2018, Mr. Gregory E. Abel resigned as PacifiCorp's Chairman of the Board of Directors and Chief Executive Officer and Mr. William J. Fehrman was elected as PacifiCorp's Chairman of the Board of Directors and Chief Executive Officer.


PacifiCorp believes that the compensation paid to each of its Chief Financial Officer, or CFO, and its other most highly compensated executive officers, to whom PacifiCorp refers collectively as its Named Executive Officers, or NEOs, should be closely aligned with its overall performance, and each NEO's contribution to that performance, on both a short- and long-term basis, and that such compensation should be sufficient to attract and retain highly qualified leaders who can create significant value for the organization. PacifiCorp's compensation programs are designed to provide its NEOs meaningful incentives for superior corporate and individual performance. Performance is evaluated on a subjective basis within the context of both financial and non-financial objectives, among which are customer service, employee commitment, environmental respect, regulatory integrity, operational excellence and financial strength, which PacifiCorp believes contribute to its long-term success.


How is Compensation Determined


PacifiCorp's compensation committee consists solely of the Chairman and CEO. On January 10, 2018, Mr. Fehrman replaced Mr. Abel as the sole member of PacifiCorp's compensation committee. Mr. Fehrman also serves as BHE's President and Chief Executive Officer. The Chairman and CEO is responsible for the establishment and oversight of PacifiCorp's compensation policy and for approving compensation decisions for its NEOs such as approving base pay increases, incentive and performance awards, off-cycle pay changes, and participation in other employee benefit plans and programs.


PacifiCorp's criteria for assessing executive performance and determining compensation in any year is inherently subjective and is not based upon specific formulas or weighting of factors. PacifiCorp does not specifically use other companies as benchmarks when establishing its NEOs' compensation.



465


Discussion and Analysis of Specific Compensation Elements


Base Salary


PacifiCorp determines base salaries for all of its NEOs, other than the Chairman and CEO, by reviewing its overall performance, and each NEO's performance, the value each NEO brings to PacifiCorp and general labor market conditions. While base salary provides a base level of compensation intended to be competitive with the external market, the annual base salary adjustment for each NEO, other than the Chairman and CEO, is determined on a subjective basis after consideration of these factors and is not based on target percentiles or other formal criteria. All merit increases are approved by the Chairman and CEO and take effect in the last payroll period of the year. An increase or decrease in base salary may also result from a promotion or other significant change in a NEO's responsibilities during the year. For 2017,2020, base salaries for all NEOs, other than the Chairman and CEO, increased on average by 2.55%4.36% effective December 26, 2016,2019, reflecting merit increases.


Short-Term Incentive Compensation


The objective of short-term incentive compensation is to reward the achievement of significant annual corporate and business unit goals while also providing NEOs with competitive total cash compensation.


Annual Incentive Plan


Under PacifiCorp's Annual Incentive Plan, or AIP, all NEOs, other than the Chairman and CEO, are eligible to earn an annual discretionary cash incentive award, which is determined on a subjective basis at the Chairman and CEO's sole discretion and is not based on a specific formula or cap. The Chairman and CEO considers a variety of factors in determining each NEO's annual incentive award including the NEO's performance, PacifiCorp's overall performance and each NEO's contribution to that overall performance. The Chairman and CEO evaluates performance using financial and non-financial objectives, including customer service, employee commitment, environmental respect, regulatory integrity, operational excellence and financial strength, as well as the NEO's response to issues and opportunities that arise during the year. No factor was individually material to the Chairman and CEO's determination regarding the amounts paid to each NEO under the AIP for 2017.2020. Approved awards are paid prior to year-end.


Performance Awards


In addition to the annual awards under the AIP, PacifiCorp may grant cash performance awards periodically during the year to one or more NEOs, other than the Chairman and CEO, to reward the accomplishment of significant non-recurring tasks or projects. These awards are discretionary and are approved by the Chairman and CEO. In 2017,2020, a cash performance award was granted to Mr. Bird and Ms. CraneKobliha in recognition of theirher outstanding efforts.


Long-Term Incentive Compensation


The objective of long-term incentive compensation is to retain NEOs, reward their exceptional performance and motivate them to create long-term, sustainable value. PacifiCorp's current long-term incentive compensation program is cash-based. PacifiCorp does not utilize stock options or other forms of equity-based awards.



Long-Term Incentive Partnership Plan


The PacifiCorp Long-Term Incentive Partnership Plan, or LTIP, is designed to retain key employees and to align PacifiCorp's interests and the interests of the participating employees. All of PacifiCorp's NEOs, other than the Chairman and CEO, participate in the LTIP. The LTIP provides for annual discretionary awards based upon significant accomplishments by the individual participants and the achievement of the financial and non-financial objectives previously described. The goals are developed with the objective of being attainable with a sustained, focused and concerted effort and are determined and communicated by January of each plan year. The BHE Chairman and PacifiCorp's Presidents approve eligibility to participate in the LTIP and the amount of the incentive award. Awards are capped at 1.0 times base salary and finalized in the first quarter of the following year. The BHE Chairman and PacifiCorp's Presidents may grant a supplemental award to any participant for the award year separate from the incentive award, subject to the same terms and conditions as the incentive award. PacifiCorp's Presidents may participate in the LTIP but only the BHE Chairman shall make determinations regarding their participation and the value of their incentive award. These cash-based awards are subject to mandatory deferral and equal annual vesting over a four-year period starting in the performance year. Participants allocate the value of their deferral accounts among various investment alternatives. Gains or losses may be incurred based on investment performance. Participating NEOs may elect to defer all or a part of the award or receive payment in cash after the four-year mandatory deferral and vesting period. Vested balances (including any investment gains or losses thereon) of terminating participants are paid at the time of termination.


466


Deferred Compensation Plan


PacifiCorp's Executive Voluntary Deferred Compensation Plan, or DCP, provides a means for all NEOs, other than the Chairman and CEO, to make voluntary deferrals of up to 50% of base salary and 100% of short-term incentive compensation awards. PacifiCorp includes the DCP as part of the participating NEO's overall compensation in order to provide a comprehensive, competitive package. The deferrals and any investment returns grow on a tax-deferred basis. Amounts deferred under the DCP receive a rate of return based on the returns of any combination of various investment alternatives offered under the DCP and selected by the participant. The plan allows participants to choose from three forms of distribution. The plan permits PacifiCorp to make discretionary contributions on behalf of participants.


Potential Payments Upon Termination
PacifiCorp's NEOs, other than the Chairman and CEO, are not entitled to severance or enhanced benefits upon termination of employment or change in control. However, upon any termination of employment, PacifiCorp's other NEOs would be entitled to the vested balances in the LTIP, DCP and PacifiCorp's non-contributory defined benefit pension plan, or the Retirement Plan.


Compensation Committee Report


Mr. Fehrman, PacifiCorp's current Chairman and CEO and sole member of PacifiCorp's compensation committee, has reviewed the Compensation Discussion and Analysis and, based on this review, has recommended to the Board of Directors that the Compensation Discussion and Analysis be included in this Annual Report on Form 10-K.


William J. Fehrman



Summary Compensation Table


The following table sets forth information regarding compensation earned by each of PacifiCorp's NEOs during the years indicated:
Change in
Pension
Value and
Nonqualified
Deferred
CompensationAll Other
Name and Principal PositionYearBase Salary
Bonus (1)
Earnings(2)
Compensation (3)
Total (4)
William J. Fehrman(5)
2020$— $— $— $— $— 
Chairman of the Board of Directors2019— — — — — 
and Chief Executive Officer2018— — — — — 
Stefan A. Bird2020375,000 1,327,839 17,723 33,479 1,754,041 
President and Chief Executive2019365,000 1,286,958 10,152 31,845 1,693,955 
Officer, Pacific Power2018355,000 1,058,696 29,549 31,633 1,474,878 
Gary W. Hoogeveen(6)
2020361,080 1,109,713 — 32,690 1,503,483 
President and Chief Executive2019350,000 964,837 — 32,731 1,347,568 
Officer, Rocky Mountain Power2018315,570 898,733 — 32,484 1,246,787 
Nikki L. Kobliha2020262,260 330,510 37,438 32,286 662,494 
Vice President, Chief Financial2019239,571 243,289 33,825 31,391 548,076 
Officer and Treasurer2018224,510 190,045 — 30,804 445,359 

467


        Change in    
        Pension    
        Value and    
        Nonqualified    
        Deferred    
        Compensation All Other  
Name and Principal Position Year Base Salary 
Bonus (1)
 
Earnings (2)
 
Compensation (3)
 
Total (4)
             
Gregory E. Abel (5)(6)
 2017 $
 $
 $
 $
 $
Chairman of the Board of Directors 2016 
 
 
 
 
and Chief Executive Officer 2015 
 
 
 
 
             
Stefan A. Bird 2017 346,000
 1,116,105
 9,480
 30,965
 1,502,550
President and Chief Executive 2016 338,000
 738,784
 629
 13,958
 1,091,371
Officer, Pacific Power 2015 313,275
 844,634
 13,201
 12,614
 1,183,724
             
Cindy A. Crane 2017 346,000
 1,252,241
 45,016
 31,938
 1,675,195
President and Chief Executive 2016 338,000
 758,248
 35,752
 15,841
 1,147,841
Officer, Rocky Mountain Power 2015 324,028
 758,656
 8,589
 13,429
 1,104,702
             
Nikki L. Kobliha 2017 217,079
 122,400
 18,304
 30,415
 388,198
Vice President, Chief Financial Officer and Treasurer 2016 203,900
 143,004
 9,728
 29,585
 386,217
  2015 177,384
 91,758
 
 27,253
 296,395
(1)Consists of annual cash incentive awards earned pursuant to the AIP for PacifiCorp's NEOs, performance awards, and the vesting of LTIP awards and associated vested earnings. The breakout for 2020 is as follows:

(1)Consists of annual cash incentive awards earned pursuant to the AIP for PacifiCorp's NEOs, performance awards for Mr. Bird and Ms. Crane in recognition of efforts to support PacifiCorp's objectives and the vesting of LTIP awards and associated vested earnings. The breakout for 2017 is as follows:
LTIP
PerformanceVestedVested
AIPAwardAwardsEarningsTotal
Stefan A. Bird$550,000 $— $717,500 $60,339 $777,839 
Gary W. Hoogeveen550,000 — 394,500 165,213 559,713 
Nikki L. Kobliha87,529 40,000 142,125 60,856 202,981 
      LTIP
    Performance Vested Vested  
  AIP Award Awards Earnings Total
Stefan A. Bird $500,000
 $100,000
 $503,178
 $12,927
 $516,105
Cindy A. Crane 500,000
 100,000
 479,093
 173,148
 652,241
Nikki L. Kobliha 75,000
 
 46,750
 650
 47,400


The ultimate payouts of LTIP awards are undeterminable as the amounts to be paid out may increase or decrease depending on investment performance. BHE's Chairman and PacifiCorp's Presidents establish the award categories for determining LTIP awards based on net income target goals or other criteria. In 2017,2020, the gross award was subjectively determined at the discretion of the BHE Chairman and PacifiCorpPacifiCorp's Presidents based on the overall achievement of PacifiCorp's financial and non-financial objectives including customer service, employee commitment and safety, environmental respect, regulatory integrity, operational excellence and financial strength.
(2)Amounts are based upon the aggregate increase in the actuarial present value of all qualified and nonqualified defined benefit plans, which includes the Retirement Plan. Refer to the Pension Benefits table below for a discussion of the assumptions used in calculating these amounts. No participant in PacifiCorp's nonqualified deferred compensation plans earned "above market" or "preferential" earnings on amounts deferred.
(3)Amounts consist of PacifiCorp K Plus Employee Savings Plan, or 401(k) Plan, contributions PacifiCorp paid on behalf of the NEOs, except for Mr. Bird and Ms. Crane for whom PacifiCorp also includes an amount paid to each of them as a tax gross-up with respect to a personal benefit with a value less than $10,000.
(4)Any amounts voluntarily deferred by the NEO, if applicable, are included in the appropriate column in the Summary Compensation Table.
(5)Mr. Abel receives no direct compensation from PacifiCorp. PacifiCorp reimburses BHE for the cost of Mr. Abel's time spent on matters supporting PacifiCorp, including compensation paid to him by BHE, pursuant to an intercompany administrative services agreement among BHE and its subsidiaries. In 2017, PacifiCorp reimbursed BHE $123,480 for the cost of Mr. Abel's time spent on matters supporting PacifiCorp pursuant to the intercompany administrative services agreement.
(6)On January 10, 2018, Mr. Gregory E. Abel resigned as PacifiCorp's Chairman of the Board of Directors and Chief Executive Officer and Mr. William J. Fehrman was elected as PacifiCorp's Chairman of the Board of Directors and Chief Executive Officer.

(2)Amounts are based upon the aggregate increase in the actuarial present value of all qualified and nonqualified defined benefit plans, which includes the Retirement Plan. Refer to the Pension Benefits table below for a discussion of the assumptions used in calculating these amounts. No participant in PacifiCorp's nonqualified deferred compensation plans earned "above market" or "preferential" earnings on amounts deferred.
(3)Amounts consist of PacifiCorp K Plus Employee Savings Plan, or 401(k) Plan, contributions PacifiCorp paid on behalf of the NEOs, except for Mr. Bird for whom PacifiCorp also includes an amount paid for a tax gross-up with respect to a personal benefit with a value less than $10,000.
(4)Any amounts voluntarily deferred by the NEO, if applicable, are included in the appropriate column in the Summary Compensation Table.
(5)On January 10, 2018, Mr. William J. Fehrman was elected as PacifiCorp's Chairman of the Board of Directors and Chief Executive Officer. Mr. Fehrman receives no direct compensation from PacifiCorp. PacifiCorp reimburses BHE for the cost of Mr. Fehrman's time spent on matters supporting PacifiCorp, including compensation paid to him by BHE, pursuant to an intercompany administrative services agreement among BHE and its subsidiaries. In 2020, PacifiCorp reimbursed BHE $277,908 for the cost of Mr. Fehrman's time spent on matters supporting PacifiCorp pursuant to the intercompany administrative services agreement.
(6)Mr. Gary W. Hoogeveen was named Rocky Mountain Power's president effective June 1, 2018 and Rocky Mountain Power's chief executive officer effective November 28, 2018.
Pension Benefits


The following table sets forth certain information regarding the defined benefit pension plan accounts held by each of PacifiCorp's NEOs as of December 31, 2017:2020:

    Number of years of Present value of
Name Plan name credited service 
accumulated benefits (1)
       
Gregory E. Abel  n/a n/a n/a
Stefan A. Bird  Retirement 10 years $177,225
Cindy A. Crane  Retirement 21 years 478,574
Nikki L. Kobliha  Retirement 12 years 123,795


(1)Amounts are computed using assumptions, other than the expected retirement age, consistent with those used in preparing the related pension disclosures in the Notes to Consolidated Financial StatementsNumber of PacifiCorp in Item 8years of this Form 10-K and are as of December 31, 2017, which is the measurement date for the plans. The expected retirement age assumption has been determined in accordance with Instruction 2 to Item 402(h)(2) of Regulation S-K. For the Retirement Plan calculations of the presentPresent value of
NamePlan namecredited service
accumulated benefits the following assumptions were used: 60% lump sum payment; 40% joint and 100% survivor annuity if participant is married and 40% single life annuity if participant is single. The present value assumptions used in calculating the present value of accumulated benefits for the(1)
William J. Fehrman n/an/an/a
Stefan A. Bird Retirement Plan were as follows: 10 years$234,649 
Gary W. Hoogeveenn/a discount rate of 3.60%; an expected retirement age of 65; postretirement mortality using the RP-2014 gender specific tables, adjusted for BHE credibility weighted experience, translated to 2011 using MP-2014. 2012 and 2013 rates were used for MP-2016 and MP-2017, respectively and generational mortality improvements from 2013 forward were based on the custom RPEC 2017 model; n/a lump sum interest rate of 3.60%; and lump sum mortality using the gender specific tables set forth in IRC 417(e)(3) for the upcoming fiscal year with mortality improvements determined using MP-2016.n/a
Nikki L. Kobliha Retirement12 years183,412 


(1)Amounts are computed using assumptions, other than the expected retirement age, consistent with those used in preparing the related pension disclosures in the Notes to Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K and are as of December 31, 2020, which is the measurement date for the plans. The expected retirement age assumption has been determined in accordance with Instruction 2 to Item 402(h)(2) of Regulation S-K. For the Retirement Plan calculations of the present value of accumulated benefits, the following assumptions were used: 80% lump sum payment; 20% joint and 100% survivor annuity if participant is married and 20% single life annuity if participant is single. The present value assumptions used in calculating the present value of accumulated benefits for the Retirement Plan were as follows: a discount rate of 2.50%; an expected retirement age of 65; cash balance interest crediting assumption of 0.82% for 2021 and 2022, and 2.00% thereafter; postretirement mortality using the RP-2014 gender specific tables, adjusted for BHE credibility weighted experience, translated to 2011 using MP-2014; generational mortality improvements from 2011 forward based on MP-2020; a lump sum interest rate of 2.50%; and lump sum mortality using the unisex tables set forth in IRC 417(e)(3) for the upcoming fiscal year with mortality improvements determined using MP-2019.
468


Historically, PacifiCorp has adopted the Retirement Plan for the majority of its employees, other than employees subject to collective bargaining agreements that do not provide for coverage under the Retirement Plan. Through May 31, 2007, participants earned benefits at retirement payable for life based on length of service through May 31, 2007 and average pay in the 60 consecutive months of highest pay out of the 120 months prior to May 31, 2007. Pay for this purpose included base salary and annual incentive plan payments up to 10% of base salary, but was limited to the amounts specified in Internal Revenue Code Section 401(a)(17). Benefits were based on 1.3% of final average pay plus 0.65% of final average pay in excess of covered compensation (as defined in Internal Revenue Code Section 401(1)(5)(E)) multiplied by years of service.


The Retirement Plan was restated effective June 1, 2007 to change from a traditional final average pay formula as described above to a cash balance formula for non-union participants. Benefits under the final average pay formula were frozen as of May 31, 2007, and no future benefits will accrue under that formula for non-union participants. Under the cash balance formula, benefits are based on pay credits to each participant's account of 6.5% (5.0% for employees hired after June 30, 2006 and before January 1, 2008) of eligible compensation. In addition, through August 1, 2009, there was a pay credit of 4% of eligible compensation in excess of the Social Security Wage Base. Interest is also credited to each participant's account. Employees who were age 40 or older as of May 31, 2007 received certain additional transition pay credits for five years from the effective date of the Retirement Plan restatement.


Participants in the Retirement Plan are entitled to receive full benefits upon retirement on or after age 65. Such participants are also entitled to receive reduced benefits upon early retirement after age 55 with at least five years of service or when age plus years of service equals 75.


The Retirement Plan was closed to non-union employees hired after December 31, 2007 (which includes Mr. Hoogeveen). In 2008, non-union employee participants in the Retirement Plan were offered the option to continue to receive pay credits in the Retirement Plan or receive equivalent fixed contributions to the 401(k) Plan with any such election becoming effective January 1, 2009. Ms. Kobliha elected the equivalent fixed 401(k) contribution option and, therefore, no longer receives pay credits in the Retirement Plan. In 2017, the Retirement Plan was frozen for the remainder of the non-union employees who had participated (which includeincludes Mr. Bird and Ms. Crane)Bird) with pay credits equivalent to those received in the Retirement Plan allocated into the K Plus Employee Savings401(k) Plan. Each NEO continuesMr. Bird and Ms. Kobliha continue to receive interest credits in the Retirement Plan.



Nonqualified Deferred Compensation


The following table sets forth certain information regarding the nonqualified deferred compensation plan accounts held by each of PacifiCorp's NEOs as of December 31, 2017:2020:

ExecutiveRegistrantAggregateAggregateAggregate
contributionscontributionsearnings/losseswithdrawals/balance as of
Name
in 2020(1)(2)
in 2020in 2020distributionsDecember 31, 2020
William J. Fehrman$— $— $— $— $— 
Stefan A. Bird— — — — — 
Gary W. Hoogeveen200,262 — 431,495 — 3,156,326 
Nikki L. Kobliha176,349 — 12,418 — 240,127 

  Executive Registrant Aggregate Aggregate Aggregate
  contributions contributions earnings withdrawals/ balance as of
Name 
in 2017 (1)
 in 2017 in 2017 distributions 
December 31, 2017 (2)
           
Gregory E. Abel $
 $
 $
 $
 $
Stefan A. Bird 
 
 
 
 
Cindy A. Crane 825,744
 
 457,063
 (85,811) 3,781,797
Nikki L. Kobliha 
 
 
 
 
(1)The executive contribution amount shown for Mr. Hoogeveen represents a deferral of $200,262 of his 2017 LTIP award which was deferred in 2020. $139,109 of the deferred 2017 LTIP award is included in the 2020 total compensation reported for him in the Summary Compensation Table and is not additional compensation. The remaining LTIP award was earned prior to 2020.

(2)The executive contribution amount shown for Ms. Kobliha represents a deferral of $44,995 of her 2020 compensation and a deferral of $131,354 of her 2017 LTIP award which was deferred in 2020. $43,821 of the deferred 2017 LTIP award is included in the 2020 total compensation reported for her in the Summary Compensation Table and is not additional compensation. The remaining LTIP award was earned prior to 2020.
(1)The executive contribution amount shown for Ms. Crane represents a deferral of $500,000 of her 2017 compensation and $325,744 of her 2013 LTIP award which was deferred in 2017. The $500,000 deferred compensation and $100,751 of the deferred LTIP award are included in the 2017 total compensation reported for her in the Summary Compensation Table and are not additional compensation. The remaining 2013 LTIP award was earned prior to 2017.
(2)The aggregate balance as of December 31, 2017 shown for Ms. Crane includes $67,107 of compensation previously reported in 2016 in the Summary Compensation Table, and $35,397 of compensation previously reported in 2015 in the Summary Compensation Table.
Eligibility for PacifiCorp's DCP is restricted to select management and highly compensated employees. The plan provides tax benefits to eligible participants by allowing them to defer compensation on a pretax basis, thus reducing their current taxable income. Deferrals and any investment returns grow on a tax-deferred basis, thus participants pay no income tax until they receive distributions. The DCP permits participants to make a voluntary deferral of up to 50% of base salary and 100% of short-term incentive compensation awards. All deferrals are net of social security taxes. Amounts deferred under the DCP receive a rate of return based on the returns of any combination of various investment alternatives offered by the plan and selected by the participant. Gains or losses are calculated daily, and returns are posted to accounts based on participants' fund allocation elections. Participants can change their fund allocations as of the end of any day on which the market is open.
469


The DCP allows participants to maintain three accounts based upon when they want to receive payments: retirement account, in-service account and education account. Both the retirement and in-service accounts can be distributed as lump sums or in up to 10 annual installments, except in the case of the four DCP transition accounts that allow for a grandfathered payout based on the previous deferred compensation plan distribution elections of lump sum, 5, 10 or 15 annual installments. Effective December 31, 2006, no new money may be deferred into the DCP transition accounts. The education account is distributed in four annual installments. If a participant leaves employment prior to retirement (age 55), all amounts in the participant's account will be paid out in a lump sum as soon as administratively practicable. Participants are 100% vested in their deferrals and any investment gains or losses recorded in their accounts.


Participants in PacifiCorp's LTIP also have the option of deferring all or a part of those awards after the four-year mandatory deferral and vesting period. The provisions governing the deferral of LTIP awards are similar to those described for the DCP above.



Potential Payments Upon Termination


PacifiCorp's NEOs, other than the Chairman and CEO, are not generally entitled to severance or enhanced benefits upon termination of employment or change in control. Mr. Abel resigned as PacifiCorp's Chairman and CEO on January 10, 2018 and received no severance or enhanced benefits in connection with his resignation.


The following table sets forth the estimated increase in the present value of benefits pursuant to the termination scenarios indicated for PacifiCorp's NEOs, other than Mr. Abel.Fehrman. Payments or benefits that are not enhanced in form or amount upon the occurrence of a particular termination scenario, which include 401(k) and nonqualified deferred compensation account balances and those portions of long-term incentive payments that would have otherwise been paid, are not included herein. All estimated payments reflected in the table below assume termination on December 31, 20172020 and are payable as lump sums unless otherwise noted.

Termination Scenario
Incentive (1)
Pension (2)
Stefan A. Bird:
Retirement, Voluntary and Involuntary With or Without Cause$— $14,335 
Death and Disability1,084,155 14,335 
Gary W. Hoogeveen:
Retirement, Voluntary and Involuntary With or Without Cause— n/a
Death and Disability728,545 n/a
Nikki L. Kobliha:
Retirement, Voluntary and Involuntary With or Without Cause— — 
Death and Disability267,244 — 

Termination Scenario 
Incentive (1)
 
Pension (2)
     
Stefan A. Bird:    
Retirement, Voluntary and Involuntary With or Without Cause 
 49,531
Death and Disability 896,780
 49,531
Cindy A. Crane(3):
    
Involuntary With Cause 
 30,536
Retirement, Voluntary and Involuntary Without Cause, Death and Disability 974,072
 30,536
Nikki L. Kobliha:    
Retirement, Voluntary and Involuntary With or Without Cause 
 1,282
Death and Disability 96,990
 1,282
(1)Amounts represent the unvested portion of each NEO's LTIP account, which becomes 100% vested under certain circumstances.

(1)Amounts represent the unvested portion of each NEO's LTIP account, which becomes 100% vested under certain circumstances.
(2)Pension values represent the excess of the present value of benefits payable under each termination scenario over the amount already reflected in the Pension Benefits table.
(3)Ms. Crane has already met the retirement criteria, therefore her termination and death scenarios under the Retirement Plan are based on assuming 60% paid as a lump sum and 40% paid as a 100% joint and survivor annuity.

(2)Pension values represent the excess of the present value of benefits payable under each termination scenario over the amount already reflected in the Pension Benefits table.
Chief Executive Officer Pay Ratio


PacifiCorp’sPacifiCorp's CEO receives no direct compensation from PacifiCorp, and no amounts are reported for the CEO in the Summary Compensation Table. Accordingly, PacifiCorp has determined that the CEO pay ratio is not calculable.


Director Compensation


PacifiCorp's directors do not receive additional compensation for service as directors of PacifiCorp. Compensation information for Messrs. Abel,Fehrman, Bird, Ms. Crane,Hoogeveen, and Ms. Kobliha for their services as executive officers of PacifiCorp is described above.



470


Compensation Committee Interlocks and Insider Participation


As of December 31, 2017, Mr. Abel was PacifiCorp's Chairman and CEO and also the Chairman, President and Chief Executive Officer of BHE. On January 10, 2018, Mr. Fehrman becameis PacifiCorp's Chairman and CEO and also the President and Chief Executive Officer of BHE. None of PacifiCorp's executive officers serves as a member of the compensation committee of any company that has an executive officer serving as a member of PacifiCorp's Board of Directors. None of PacifiCorp's executive officers serves as a member of the board of directors of any company (other than BHE) that has an executive officer serving as a member of PacifiCorp's compensation committee. See also PacifiCorp's Item 13 in this Annual Report on Form 10-K.



Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters


BERKSHIRE HATHAWAY ENERGY, MIDAMERICAN FUNDING, MIDAMERICAN ENERGY, NEVADA POWER, AND SIERRA PACIFIC AND EASTERN ENERGY GAS


Information required by Item 12 is omitted pursuant to General Instruction I(2)(c) to Form 10-K.


PACIFICORP


Beneficial Ownership


PacifiCorp is a consolidated subsidiary of BHE. PacifiCorp's common stock is indirectly owned by BHE, 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580. BHE is a consolidated subsidiary of Berkshire Hathaway that, as of February 16, 2018,January 31, 2021, owns 90.2%91.1% of BHE's common stock. The balance of BHE's common stock is beneficially owned by Walter Scott, Jr. (along with his family members and related or affiliated entities), a member of BHE's Board of Directors, and Gregory E. Abel, BHE's Executive Chairman.


None of PacifiCorp's executive officers or directors owns shares of its preferred stock. The following table sets forth certain information regarding the beneficial ownership of BHE's common stock and the Class A and Class B shares of Berkshire Hathaway common stock held by each of PacifiCorp's directors, executive officers and all of its directors and executive officers as a group as of February 16, 2018:January 31, 2021:

BHEBerkshire Hathaway
Common StockClass A Common StockClass B Common Stock
Beneficial Owner
Number of Shares Beneficially Owned(1)
Percentage of Class(1)
Number of Shares Beneficially Owned(1)
Percentage of Class(1)
Number of Shares Beneficially Owned(1)
Percentage of Class(1)
William J. Fehrman— — — — — — 
Stefan A. Bird— — — — — — 
Calvin D. Haack— — — — — — 
Natalie L. Hocken— — — — — — 
Nikki L. Kobliha— — — — — — 
Gary W. Hoogeveen— — — — 502 *
All executive officers and directors as a group (6 persons)— — — — 502 *

  BHE Berkshire Hathaway
  Common Stock Class A Common Stock Class B Common Stock
Beneficial Owner 
Number of Shares Beneficially Owned(1)
 
Percentage of Class(1)
 
Number of Shares Beneficially Owned(1)
 
Percentage of Class(1)
 
Number of Shares Beneficially Owned(1)
 
Percentage of Class(1)
             
William J. Fehrman 
 
 
 
 20
 *
Stefan A. Bird 
 
 
 
 
 
Cindy A. Crane 
 
 
 
 
 
Patrick J. Goodman 
 
 5
 *
 786
 *
Natalie L. Hocken 
 
 
 
 
 
Nikki L. Kobliha 
 
 
 
 
 
All executive officers and directors as a group (6 persons) 
 
 5
 *
 806
 *

*    Indicates beneficial ownership of less than one percent of all outstanding shares.
(1)Includes shares of which the listed beneficial owner is deemed to have the right to acquire beneficial ownership under Rule 13d-3(d) under the Securities Exchange Act, including, among other things, shares which the listed beneficial owner has the right to acquire within 60 days.


Item 13.Certain Relationships and Related Transactions, and Director Independence

(1)Includes shares of which the listed beneficial owner is deemed to have the right to acquire beneficial ownership under Rule 13d-3(d) under the Securities Exchange Act, including, among other things, shares which the listed beneficial owner has the right to acquire within 60 days.

471


Item 13.Certain Relationships and Related Transactions, and Director Independence

BERKSHIRE HATHAWAY ENERGY, MIDAMERICAN FUNDING, MIDAMERICAN ENERGY, NEVADA POWER, AND SIERRA PACIFIC AND EASTERN ENERGY GAS


Information required by Item 13 is omitted pursuant to General Instruction I(2)(c) to Form 10-K.


PACIFICORP


Certain Relationships and Related Transactions


The Berkshire Hathaway Inc. Code of Business Conduct and Ethics and the BHE Code of Business Conduct, or the Codes, which apply to all of PacifiCorp's directors, officers and employees and those of its subsidiaries, generally govern the review, approval or ratification of any related-person transaction. A related-person transaction is one in which PacifiCorp or any of its subsidiaries participate and in which one or more of PacifiCorp's directors, executive officers, holders of more than five percent of its voting securities or any of such persons' immediate family members have a direct or indirect material interest.


Under the Codes, all of PacifiCorp's directors and executive officers (including those of its subsidiaries) must disclose to PacifiCorp's legal department any material transaction or relationship that reasonably could be expected to give rise to a conflict with its interests. No action may be taken with respect to such transaction or relationship until approved by the legal department. For PacifiCorp's chief executive officer and chief financial officer, prior approval for any such transaction or relationship must be given by Berkshire Hathaway's audit committee. In addition, prior legal department approval must be obtained before a director or executive officer can accept employment, offices or board positions in other for-profit businesses, or engage in his or her own business that raises a potential conflict or appearance of conflict with PacifiCorp's interests.


Under an intercompany administrative services agreement PacifiCorp has entered into with BHE and its other subsidiaries, the costs of certain administrative services provided by BHE to PacifiCorp or by PacifiCorp to BHE, or shared with BHE and other subsidiaries, are directly charged or allocated to the entity receiving such services. This agreement has been filed with the regulatory commissions in the states where PacifiCorp serves retail customers. PacifiCorp also provides an annual report of all transactions with its affiliates to its state regulatory commissions, who have the authority to refuse recovery in rates for payments PacifiCorp makes to its affiliates deemed to have the effect of subsidizing the separate business activities of BHE or its other subsidiaries.


Refer to Note 1821 of the Notes to the Consolidated Financial Statements of PacifiCorp in Item 8 of this Form 10-K for additional information regarding related-party transactions.


Director Independence


Because PacifiCorp's common stock is indirectly, wholly owned by BHE and its Board of Directors consists of BHE and PacifiCorp employees, PacifiCorp is not required to have independent directors or audit, nominating or compensation committees consisting of independent directors.


Based on the standards of the New York Stock Exchange LLC, on which the common stock of PacifiCorp's ultimate parent company, Berkshire Hathaway, is listed, PacifiCorp's Board of Directors has determined that none of its directors are considered independent because of their employment by BHE or PacifiCorp.



472
Item 14.Principal Accountant Fees and Services



Item 14.Principal Accountant Fees and Services

The following table shows the fees paid or accrued by each Registrant for audit and audit-related services and fees paid for tax and all other services rendered by Deloitte & Touche LLP, the member firms of Deloitte Touche Tohmatsu Limited, and their respective affiliates (collectively, the "Deloitte Entities") for each of the last two years (in millions):

Berkshire
HathawayMidAmericanMidAmericanNevadaSierraEastern
Energy(1)
PacifiCorp
Funding(1)
EnergyPowerPacificEnergy Gas
2020
Audit fees(2)
$10.6 $1.5 $1.1 $1.0 $0.9 $0.9 $0.8 
Audit-related fees(3)
0.7 0.1 0.2 0.2 — — 0.4 
Tax fees(4)
0.1 — — — — — — 
Total$11.4 $1.6 $1.3 $1.2 $0.9 $0.9 $1.2 
2019
Audit fees(2)
$9.7 $1.5 $1.4 $1.2 $0.9 $0.9 $2.3 
Audit-related fees(3)
0.9 0.4 0.2 0.2 — — 0.3 
Tax fees(4)
0.1 — — — — — — 
Total$10.7 $1.9 $1.6 $1.4 $0.9 $0.9 $2.6 

 Berkshire          
 Hathaway   MidAmerican MidAmerican Nevada Sierra
 Energy PacifiCorp Funding Energy Power Pacific
2017           
Audit fees(1)
$9.3
 $1.5
 $1.2
 $1.1
 $0.9
 $0.9
Audit-related fees(2)
0.8
 0.2
 0.2
 0.2
 
 
Tax fees(3)
0.1
 
 
 
 
 
Total$10.2
 $1.7
 $1.4
 $1.3
 $0.9
 $0.9
            
2016           
Audit fees(1)
$9.1
 $1.5
 $1.2
 $1.1
 $0.9
 $1.1
Audit-related fees(2)
0.8
 0.2
 0.2
 0.2
 
 
Tax fees(3)
0.1
 
 
 
 
 
Total$10.0
 $1.7
 $1.4
 $1.3
 $0.9
 $1.1
(1)The reported fees for Berkshire Hathaway Energy include those fees reported for PacifiCorp, MidAmerican Funding, Nevada Power, Sierra Pacific and Eastern Energy Gas (since November 1, 2020 acquisition date totaling $0.9 million) while the reported fees for MidAmerican Funding include those fees reported for MidAmerican Energy.

(2)Audit fees include fees for the audit of the consolidated financial statements and interim reviews of the quarterly financial statements for each Registrant, audit services provided in connection with required statutory audits of certain of BHE's subsidiaries and comfort letters, consents and other services related to SEC matters for each Registrant.
(1)Audit fees include fees for the audit of the consolidated financial statements and interim reviews of the quarterly financial statements for each Registrant, audit services provided in connection with required statutory audits of certain of BHE's subsidiaries and comfort letters, consents and other services related to SEC matters for each Registrant.
(2)Audit-related fees primarily include fees for assurance and related services for any other statutory or regulatory requirements, audits of certain employee benefit plans and consultations on various accounting and reporting matters.
(3)Tax fees include fees for services relating to tax compliance, tax planning and tax advice. These services include assistance regarding federal, state and international tax compliance, tax return preparation and tax audits.

(3)Audit-related fees primarily include fees for assurance and related services for any other statutory or regulatory requirements, audits of certain employee benefit plans and consultations on various accounting and reporting matters.
(4)Tax fees include fees for services relating to tax compliance, tax planning and tax advice. These services include assistance regarding federal, state and international tax compliance, tax return preparation and tax audits.

The audit committee has considered whether the non-audit services provided to the Registrants by the Deloitte Entities impaired the independence of the Deloitte Entities and concluded that they did not. All of the services performed by the Deloitte Entities were pre-approved in accordance with the pre-approval policy adopted by the audit committee. The policy provides guidelines for the audit, audit-related, tax and other non-audit services that may be provided by the Deloitte Entities to the Registrants. The policy (a) identifies the guiding principles that must be considered by the audit committee in approving services to ensure that the Deloitte Entities' independence is not impaired; (b) describes the audit, audit-related and tax services that may be provided and the non-audit services that are prohibited; and (c) sets forth pre-approval requirements for all permitted services. Under the policy, requests to provide services that require specific approval by the audit committee will be submitted to the audit committee by both the Registrants' independent auditor and BHE's Chief Financial Officer. All requests for services to be provided by the independent auditor that do not require specific approval by the audit committee will be submitted to BHE's Chief Financial Officer and must include a detailed description of the services to be rendered. BHE's Chief Financial Officer will determine whether such services are included within the list of services that have received the general pre-approval of the audit committee. The audit committee will be informed on a timely basis of any such services rendered by the independent auditor.

473


PART IV


Item 15.Exhibits and Financial Statement Schedules

Item 15.Exhibits and Financial Statement Schedules
(a)Financial Statements and Schedules
(1)Financial Statements
The financial statements of all Registrants are included in their respective Item 8 of this Form 10-K.
(2)Financial Statement Schedules
Schedules not listed above have been omitted because they are either not applicable, not required or the information required to be set forth therein is included on the Consolidated Financial Statements or notes thereto.
(3)
(b)Exhibits


Item 16.Form 10-K Summary
(a)Financial Statements and Schedules 
      
 (1)Financial Statements 
      
  The financial statements of all Registrants are included in their respective Item 8 of this Form 10-K.
   
      
 (2)Financial Statement Schedules 
      
  
  
  
  
  
  
      
  Schedules not listed above have been omitted because they are either not applicable, not required or the information required to be set forth therein is included on the Consolidated Financial Statements or notes thereto. 
      
 (3)
   
      
(b)Exhibits
      
 
      
(c)Financial statements required by Regulation S-X, which are excluded from the Annual Report by Rule 14a-3(b). 
      
 


Item 16.Form 10-K Summary


None.



474


Schedule I

BERKSHIRE HATHAWAY ENERGY COMPANY
Berkshire Hathaway Energy CompanyPARENT COMPANY ONLY
Parent Company Only
Condensed Balance Sheets
As of December 31,CONDENSED BALANCE SHEETS
(Amounts in millions)
As of December 31,
20202019
ASSETS
Current assets:
Cash and cash equivalents$623 $13 
Accounts receivable - affiliate96 87 
Notes receivable - affiliate177 181 
Income tax receivable19 
Other current assets1,301 
Total current assets2,216 292 
Investments in subsidiaries48,654 40,204 
Other investments6,103 1,300 
Goodwill1,221 1,221 
Other assets488 695 
Total assets$58,682 $43,712 
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable and other current liabilities$341 $194 
Notes payable - affiliate200 240 
Short-term debt1,590 
Current portion of BHE senior debt450 350 
Total current liabilities991 2,374 
BHE senior debt12,997 8,231 
BHE junior subordinated debentures100 100 
Notes payable - affiliate116 
Other long-term liabilities1,468 530 
Total liabilities15,672 11,237 
Equity:
BHE shareholders' equity:
Preferred stock - 100 shares authorized, $0.01 par value, 4 shares issued and outstanding3,750 
Common stock - 115 shares authorized, 0 par value, 76 and 77 shares issued and outstanding
Additional paid-in capital6,377 6,389 
Long-term income tax receivable(658)(530)
Retained earnings35,093 28,296 
Accumulated other comprehensive loss, net(1,552)(1,706)
Total BHE shareholders' equity43,010 32,449 
Noncontrolling interest26 
Total equity43,010 32,475 
Total liabilities and equity$58,682 $43,712 
 2017 2016
ASSETS
Current assets:   
Cash and cash equivalents$346
 $33
Accounts receivable
 21
Accounts receivable - affiliate60
 
Notes receivable - affiliate391
 105
Other current assets21
 2
Total current assets818
 161
    
Investments in subsidiaries34,019
 33,400
Other investments2,117
 1,338
Goodwill1,221
 1,221
Other assets1,155
 1,171
    
Total assets$39,330
 $37,291
LIABILITIES AND EQUITY
Current liabilities:   
Accounts payable and other current liabilities$268
 $357
Notes payable - affiliate182
 194
Short-term debt3,331
 834
Current portion of BHE senior debt1,000
 400
Total current liabilities4,781
 1,785
    
BHE senior debt5,452
 7,418
BHE junior subordinated debentures100
 944
Notes payable - affiliate1
 1,859
Other long-term liabilities800
 942
Total liabilities11,134
 12,948
    
Equity:   
BHE shareholders' equity:   
Common stock - 115 shares authorized, no par value, 77 shares issued and outstanding
 
Additional paid-in capital6,368
 6,390
Retained earnings22,206
 19,448
Accumulated other comprehensive loss, net(398) (1,511)
Total BHE shareholders' equity28,176
 24,327
Noncontrolling interest20
 16
Total equity28,196
 24,343
    
Total liabilities and equity$39,330
 $37,291

The accompanying notes are an integral part of this financial statement schedule.

Schedule I
Berkshire Hathaway Energy Company    
Parent Company Only (continued)
Condensed Statements of Operations
For the years ended December 31,
(Amounts in millions)

 2017 2016 2015
      
Operating costs and expenses:     
General and administration$55
 $51
 $58
Depreciation and amortization4
 4
 3
Total operating costs and expenses59
 55
 61
      
Operating loss(59) (55) (61)
      
Other income (expense):     
Interest expense(475) (527) (556)
Other, net(369) 37
 14
Total other income (expense)(844) (490) (542)
      
Loss before income tax benefit and equity income(903) (545) (603)
Income tax benefit(335) (285) (330)
Equity income3,441
 2,805
 2,646
Net income2,873
 2,545
 2,373
Net income attributable to noncontrolling interest3
 3
 3
Net income attributable to BHE shareholders$2,870
 $2,542
 $2,370


The accompanying notes are an integral part of this financial statement schedule.

475

396



Schedule I
Berkshire Hathaway Energy Company    BERKSHIRE HATHAWAY ENERGY COMPANY
Parent Company Only (continued)PARENT COMPANY ONLY
Condensed Statements of Comprehensive Income
For the years ended December 31,CONDENSED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Operating expenses:
General and administration$57 $49 $21 
Depreciation and amortization
Total operating expenses61 54 25 
Operating loss(61)(54)(25)
Other income (expense):
Interest expense(527)(452)(438)
Other, net4,789 (271)(537)
Total other income (expense)4,262 (723)(975)
Income (loss) before income tax expense (benefit) and equity income4,201 (777)(1,000)
Income tax expense (benefit)1,089 (312)(513)
Equity income3,832 3,419 3,058 
Net income6,944 2,954 2,571 
Net income attributable to noncontrolling interest
Net income attributable to BHE shareholders$6,943 $2,951 $2,568 
Preferred dividends26 
Earnings on common shares$6,917 $2,951 $2,568 
 2017 2016 2015
      
Net income$2,873
 $2,545
 $2,373
Other comprehensive income (loss), net of tax1,113
 (603) (414)
Comprehensive income3,986
 1,942
 1,959
Comprehensive income attributable to noncontrolling interests3
 3
 3
Comprehensive income attributable to BHE shareholders$3,983
 $1,939
 $1,956


The accompanying notes are an integral part of this financial statement schedule.



476



Schedule I
Berkshire Hathaway Energy CompanyBERKSHIRE HATHAWAY ENERGY COMPANY
Parent Company Only (continued)PARENT COMPANY ONLY
Condensed Statements of Cash Flows
For the years ended December 31,CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

Years Ended December 31,
202020192018
Net income$6,944 $2,954 $2,571 
Other comprehensive income (loss), net of tax153 239 (462)
Comprehensive income7,097 3,193 2,109 
Comprehensive income attributable to noncontrolling interests
Comprehensive income attributable to BHE shareholders$7,096 $3,190 $2,106 
 2017 2016 2015
      
Cash flows from operating activities$2,450
 $2,760
 $2,528
      
Cash flows from investing activities:     
Investments in subsidiaries(1,566) (1,080) (1,506)
Purchases of investments(71) (24) (36)
Proceeds from sale of investments68
 20
 47
Notes receivable from affiliate, net(305) (307) 19
Other, net(8) (5) (7)
Net cash flows from investing activities(1,882) (1,396) (1,483)
      
Cash flows from financing activities:     
Repayments of BHE senior debt(1,379) 
 
Repayments of BHE subordinated debt(944) (2,000) (850)
Common stock purchases(19) 
 (36)
Net proceeds from (repayments of) short-term debt2,498
 581
 (142)
Tender offer premium paid(406) 
 
Notes payable to affiliate, net
 69
 4
Other, net(5) (4) (1)
Net cash flows from financing activities(255) (1,354) (1,025)
      
Net change in cash and cash equivalents313
 10
 20
Cash and cash equivalents at beginning of year33
 23
 3
Cash and cash equivalents at end of year$346
 $33
 $23


The accompanying notes are an integral part of this financial statement schedule.





477
398



Schedule I
BERKSHIRE HATHAWAY ENERGY COMPANY
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF CASH FLOWS
(In millions)
Years Ended December 31,
202020192018
Cash flows from operating activities$1,639 $1,780 $1,885 
Cash flows from investing activities:
Investments in subsidiaries(6,422)(1,972)(1,791)
Purchases of investments(1,345)(42)(44)
Proceeds from sale of investments22 42 45 
Notes receivable from affiliate, net(121)(112)(72)
Other, net(20)(5)(22)
Net cash flows from investing activities(7,886)(2,089)(1,884)
Cash flows from financing activities:
Proceeds from BHE senior debt5,212 3,166 
Repayments of BHE senior debt(350)(1,045)
Proceeds from issuance of preferred stock3,750 
Common stock purchases(126)(293)(107)
Net (repayments of) proceeds from short-term debt(1,590)607 (2,348)
Other, net(39)(1)(4)
Net cash flows from financing activities6,857 313 (338)
Net change in cash and cash equivalents610 (337)
Cash and cash equivalents at beginning of year13 346 
Cash and cash equivalents at end of year$623 $13 $

The accompanying notes are an integral part of this financial statement schedule.


478


Schedule I
BERKSHIRE HATHAWAY ENERGY COMPANY
PARENT COMPANY ONLY
NOTES TO CONDENSED FINANCIAL STATEMENTS


Basis of Presentation - The condensed financial information of BHE investments in subsidiaries are presented under the equity method of accounting. Under this method, the assets and liabilities of subsidiaries are not consolidated. The investments in subsidiaries are recorded in the Condensed Balance Sheets. The income from operations of subsidiaries is reported on a net basis as equity income in the Condensed Statements of Operations.


Other investments - BHE's investment in BYD Company Limited ("BYD") common stock is accounted for as an available-for-salea marketable security with changes in fair value recognized in AOCI.net income. As of December 31, 20172020 and 2016,2019, the fair value of BHE's investment in BYD common stock was $1,961$5,897 million and $1,185 million, respectively, which resulted in an unrealized gain of $1,729 million and $953 million as of December 31, 2017 and 2016, respectively.$1,122 million.


Dividends and distributions from subsidiaries - Cash dividends paid to BHE by its subsidiaries for the years ended December 31, 2017, 20162020, 2019 and 20152018 were $3.0$2.0 billion, for each of the three years. $2.0 billion and $2.3 billion, respectively. In January and February 2018,2021, BHE received cash dividends from its subsidiaries totaling $158 million.$131 million.


Guarantees and commitments - BHE has issued guarantees up to a maximumand letters of $236 millioncredit in supportrespect of various obligations of consolidated subsidiariessubsidiary and equity method investments aggregating $1.3 billion and commitments, subject to satisfaction of certain specified conditions, to provide equity contributions in support of renewable tax equity investments totaling $265$563 million.


See the notes to the consolidated BHE financial statements in Part II, Item 8 for other disclosures regarding long-term obligations (Notes 8, 9, 10 and 10)11) and shareholders' equity (Note 17)18).



479


Schedule II
BERKSHIRE HATHAWAY ENERGY COMPANY
CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
FOR THE THREE YEARS ENDED DECEMBER 31, 20172020
(Amounts in millions)

Column BColumn CColumn E
Balance atChargedBalance
Column ABeginningtoAcquisitionColumn Dat End
Descriptionof YearIncomeReservesDeductionsof Year
Reserves Deducted From Assets To Which They Apply:
Reserve for uncollectible accounts receivable:
Year ended 2020$44 $56 $$(28)$77 
Year ended 201942 47 (45)44 
Year ended 201840 43 (41)42 
Reserves Not Deducted From Assets(1):
Year ended 2020$12 $$$(4)$11 
Year ended 201913 (5)12 
Year ended 201813 (6)13 
  Column B Column C  Column E
  Balance at Charged     Balance
Column A Beginning to Acquisition Column D at End
Description of Year Income Reserves Deductions of Year
           
Reserves Deducted From Assets To Which They Apply:          
           
Reserve for uncollectible accounts receivable:          
Year ended 2017 $33
 $42
 $
 $(35) $40
Year ended 2016 31
 39
 
 (37) 33
Year ended 2015 37
 33
 
 (39) 31
           
Reserves Not Deducted From Assets(1):
          
Year ended 2017 $13
 $7
 $
 $(7) $13
Year ended 2016 13
 5
 
 (5) 13
Year ended 2015 11
 7
 
 (5) 13


The notes to the consolidated BHE financial statements are an integral part of this financial statement schedule.


(1)Reserves not deducted from assets relate primarily to estimated liabilities for losses retained by BHE for workers compensation, public liability and property damage claims.

(1)Reserves not deducted from assets relate primarily to estimated liabilities for losses retained by BHE for workers compensation, public liability and property damage claims.


480


Schedule I

MIDAMERICAN FUNDING, LLC
PARENT COMPANY ONLY
CONDENSED BALANCE SHEETS
(Amounts in millions)

As of December 31,
20202019
ASSETS
Current assets:
Receivables from affiliates$$
Investments in and advances to subsidiaries9,176 8,346 
Total assets$9,177 $8,348 
LIABILITIES AND MEMBER'S EQUITY
Current liabilities:
Interest accrued and other current liabilities$$
Payable to affiliate13 
Long-term debt240 240 
Total liabilities258 247 
Member's equity:
Paid-in capital1,679 1,679 
Retained earnings7,240 6,422 
Total member's equity8,919 8,101 
Total liabilities and member's equity$9,177 $8,348 
 As of December 31,
 2017 2016
ASSETS
Current assets:   
Receivables from affiliates$2
 $2
Income tax receivable13
 
Total current assets15
 2
    
Investments in and advances to subsidiaries7,322
 6,718
    
Total assets$7,337
 $6,720
    
LIABILITIES AND MEMBER'S EQUITY
Current liabilities:   
Interest accrued and other current liabilities$6
 $7
    
Payable to affiliate431
 301
Long-term debt240
 326
Total liabilities677
 634
    
Member's equity:   
Paid-in capital1,679
 1,679
Retained earnings4,981
 4,407
Total member's equity6,660
 6,086
    
Total liabilities and member's equity$7,337
 $6,720


The accompanying notes are an integral part of this financial statement schedule.

481


Schedule I

MIDAMERICAN FUNDING, LLC
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF OPERATIONS
(Amounts in millions)

Years Ended December 31,
202020192018
Other income and (expense):
Interest expense$(16)$(16)$(16)
Loss before income taxes(16)(16)(16)
Income tax benefit(5)(5)(5)
Equity in undistributed earnings of subsidiaries829 792 680 
Net income$818 $781 $669 
 Years Ended December 31,
 2017 2016 2015
      
Other income and (expense):     
Interest expense$(22) $(22) $(22)
Other, net(30) 
 
Loss before income taxes(52) (22) (22)
Income tax benefit(22) (9) (8)
Equity in undistributed earnings of subsidiaries604
 545
 472
Net income$574
 $532
 $458


The accompanying notes are an integral part of this financial statement schedule.






MIDAMERICAN FUNDING, LLC
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
      
Net income$574
 $532
 $458
Total other comprehensive income (loss), net of tax
 3
 (7)
      
Comprehensive income$574
 $535
 $451

The accompanying notes are an integral part of this financial statement schedule.



Schedule I


MIDAMERICAN FUNDING, LLC
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF CASH FLOWS
(In millions)

Years Ended December 31,
202020192018
Net cash flows from operating activities$(12)$(12)$
Net cash flows from investing activities
Net cash flows from financing activities:
Net change in amounts payable to subsidiary12 12 (2)
Net cash flows from financing activities12 12 (2)
Net change in cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year$$$

 Years Ended December 31,
 2017 2016 2015
      
Net cash flows from operating activities$(15) $(13) $(13)
      
Net cash flows from investing activities
 
 
      
Net cash flows from financing activities:     
Repayment of long-term debt(86) 
 
Tender offer premium paid(29) 
 
Net change in amounts payable to subsidiary130
 13
 13
Net cash flows from financing activities15
 13
 13
      
Net change in cash and cash equivalents
 
 
Cash and cash equivalents at beginning of year
 
 
Cash and cash equivalents at end of year$
 $
 $


The accompanying notes are an integral part of this financial statement schedule.

482


Schedule I

MIDAMERICAN FUNDING, LLC
PARENT COMPANY ONLY
NOTES TO CONDENSED FINANCIAL STATEMENTS


Incorporated by reference are MidAmerican Funding, LLC and Subsidiaries Consolidated Statements of Changes in Equity for the three years ended December 31, 20172020 in Part II, Item 8.


Basis of Presentation - The condensed financial information of MidAmerican Funding, LLC's ("MidAmerican Funding's") investments in subsidiaries is presented under the equity method of accounting. Under this method, the assets and liabilities of subsidiaries are not consolidated. The investments in and advances to subsidiaries are recorded on the Condensed Balance Sheets. The income from operations of the subsidiaries is reported on a net basis as equity in undistributed earnings of subsidiary companies on the Condensed Statements of Operations. The Condensed Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the years ended December 31, 2020, 2019 and 2018.


Payable to Affiliate - MHC, Inc. ("MHC") settles all obligations of MidAmerican Funding including primarily interest costs on, and repayments of, MidAmerican Funding's long-term debt. Net amountsdebt and income taxes. MHC paid by MHC$12 million and $12 million in 2020 and 2019, respectively, and received $2 million in 2018 on behalf of MidAmerican Funding. In 2019, MHC transferred to MidAmerican Funding totaled $130$440 million $13 million and $13of its receivable from MidAmerican Funding in the form of a dividend.

Distribution to Parent - In 2019, MidAmerican Funding recorded a noncash dividend of $8 million for the years 2017, 2016 and 2015, respectively.transfer to BHE of corporate aircraft owned by MHC.


See the notes to the consolidated MidAmerican Funding financial statements in Part II, Item 8 for other disclosures.




Schedule I

MHC INC.
PARENT COMPANY ONLY
CONDENSED BALANCE SHEETS
(Amounts in millions)


483
 As of December 31,
 2017 2016
ASSETS
Current assets:   
Cash and cash equivalents$
 $1
Receivables from affiliates2
 1
    
Receivable from parent431
 301
Investments and nonregulated property, net14
 12
Goodwill1,270
 1,270
Investments in and advances to subsidiaries5,783
 5,181
    
Total assets$7,500
 $6,766
    
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:   
Payables to affiliates$175
 $44
    
Deferred income taxes3
 4
Total liabilities178
 48
    
Shareholder's equity:   
Paid-in capital2,430
 2,430
Retained earnings4,892
 4,288
Total shareholder's equity7,322
 6,718
    
Total liabilities and shareholder's equity$7,500
 $6,766

The accompanying notes are an integral part of this financial statement schedule.

Schedule I

MHC INC.
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF OPERATIONS
(Amounts in millions)



 Years Ended December 31,
 2017 2016 2015
      
Other income$1
 $1
 $1
Income before income taxes1
 1
 1
Equity in undistributed earnings of subsidiaries603
 544
 471
Net income$604
 $545
 $472

The accompanying notes are an integral part of this financial statement schedule.




MHC INC.
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
      
Net income$604
 $545
 $472
Total other comprehensive income (loss), net of tax
 3
 (7)
      
Comprehensive income$604
 $548
 $465

The accompanying notes are an integral part of this financial statement schedule.


Schedule I

MHC INC.
PARENT COMPANY ONLY
CONDENSED STATEMENTS OF CASH FLOWS
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
      
Net cash flows from operating activities$(1) $1
 $1
      
Net cash flows from investing activities:     
Dividend from subsidiary
 
 16
Capital expenditures(2) (1) 
Net change in amounts receivable from parent(130) (13) (13)
Other
 
 (1)
Net cash flows from investing activities(132) (14) 2
      
Net cash flows from financing activities:     
Net change in amounts payable to subsidiaries(1) 5
 (7)
Net change in note payable to Berkshire Hathaway Energy Company133
 9
 3
Net cash flows from financing activities132
 14
 (4)
      
Net change in cash and cash equivalents(1) 1
 (1)
Cash and cash equivalents at beginning of year1
 
 1
Cash and cash equivalents at end of year$
 $1
 $

The accompanying notes are an integral part of this financial statement schedule.

Schedule I

MHC INC.
PARENT COMPANY ONLY
NOTES TO CONDENSED FINANCIAL STATEMENTS

Incorporated by reference are MHC Inc. and Subsidiaries Consolidated Statements of Changes in Equity for the three years ended December 31, 2017, in Part IV, Item 15(c).

Basis of Presentation - The condensed financial information of MHC Inc.'s ("MHC's") investments in subsidiaries is presented under the equity method of accounting. Under this method, the assets and liabilities of subsidiaries are not consolidated. The investments in and advances to subsidiaries are recorded on the Condensed Balance Sheets. The income from operations of the subsidiaries is reported on a net basis as equity in undistributed earnings of subsidiary companies on the Condensed Statements of Operations.

Receivable from Parent - MHC settles all obligations of MidAmerican Funding, LLC ("MidAmerican Funding") including primarily interest costs on, and repayments of, MidAmerican Funding's long-term debt. Net amounts paid by MHC on behalf of MidAmerican Funding totaled $130 million, $13 million and $13 million for the years 2017, 2016 and 2015, respectively.

Note Payable to Berkshire Hathaway Energy Company - On January 1, 2016, MidAmerican Energy Company transferred the assets and liabilities of its unregulated retail services business to a subsidiary of Berkshire Hathaway Energy Company ("BHE"). The transfer repaid $117 million of MHC's note payable to BHE. See Note 3 of MidAmerican Energy Company's Notes to Financial Statements in Part II, Item 8 for further discussion of the transfer.

See the notes to the consolidated MHC financial statements in Part IV, Item 15(c) for other disclosures.


Schedule II

MIDAMERICAN ENERGY COMPANY
VALUATION AND QUALIFYING ACCOUNTS
FOR THE THREE YEARS ENDED DECEMBER 31, 20172020
(Amounts in millions)

Column BColumn CColumn E
Balance atAdditionsBalance
Column ABeginningChargedColumn Dat End
Descriptionof Yearto IncomeDeductionsof Year
Reserves Deducted From Assets To Which They Apply:
Reserve for uncollectible accounts receivable:
Year ended 2020$$12 $(5)$12 
Year ended 2019$$$(11)$
Year ended 2018$$$(8)$
Reserves Not Deducted From Assets(1):
Year ended 2020$12 $$(4)$11 
Year ended 2019$13 $$(5)$12 
Year ended 2018$13 $$(6)$13 
(1)Reserves not deducted from assets include estimated liabilities for losses retained by MidAmerican Energy for workers compensation, public liability and property damage claims.

484
  Column B Column C   Column E
  Balance at Additions   Balance
Column A Beginning Charged Column D at End
Description of Year to Income Deductions of Year
         
Reserves Deducted From Assets To Which They Apply:        
Reserve for uncollectible accounts receivable:        
         
Year ended 2017 $7
 $8
 $(8) $7
         
Year ended 2016 $6
 $7
 $(6) $7
         
Year ended 2015 $7
 $7
 $(8) $6
         
         
Reserves Not Deducted From Assets(1):
        
         
Year ended 2017 $13
 $7
 $(7) $13
         
Year ended 2016 $13
 $5
 $(5) $13
         
Year ended 2015 $11
 $7
 $(5) $13
(1)Reserves not deducted from assets include estimated liabilities for losses retained by MidAmerican Energy for workers compensation, public liability and property damage claims.




Schedule II

MIDAMERICAN FUNDING, LLC AND SUBSIDIARIES
MHC INC. AND SUBSIDIARIES
CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
FOR THE THREE YEARS ENDED DECEMBER 31, 20172020
(Amounts in millions)

Column BColumn CColumn E
Balance atAdditionsBalance
Column ABeginningChargedColumn Dat End
Descriptionof Yearto IncomeDeductionsof Year
Reserves Deducted From Assets To Which They Apply:
Reserve for uncollectible accounts receivable:
Year ended 2020$$12 $(5)$12 
Year ended 2019$$$(11)$
Year ended 2018$$$(8)$
Reserves Not Deducted From Assets (1):
Year ended 2020$12 $$(4)$11 
Year ended 2019$13 $$(5)$12 
Year ended 2018$13 $$(6)$13 
(1)Reserves not deducted from assets include primarily estimated liabilities for losses retained by MidAmerican Funding and MHC for workers compensation, public liability and property damage claims.

485
  Column B Column C   Column E
  Balance at Additions   Balance
Column A Beginning Charged Column D at End
Description of Year to Income Deductions of Year
         
Reserves Deducted From Assets To Which They Apply:        
Reserve for uncollectible accounts receivable:        
         
Year ended 2017 $7
 $8
 $(8) $7
         
Year ended 2016 $6
 $7
 $(6) $7
         
Year ended 2015 $7
 $7
 $(8) $6
         
         
Reserves Not Deducted From Assets (1):
        
         
Year ended 2017 $13
 $7
 $(7) $13
         
Year ended 2016 $13
 $5
 $(5) $13
         
Year ended 2015 $11
 $7
 $(5) $13
(1)Reserves not deducted from assets include primarily estimated liabilities for losses retained by MidAmerican Funding and MHC for workers compensation, public liability and property damage claims.




The accompanying Consolidated Financial StatementsEXHIBIT INDEX
Exhibit No.Description

BERKSHIRE HATHAWAY ENERGY


486


Exhibit No.Description

4.9

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Board of Directors and Shareholder of
MHC Inc.
Des Moines, Iowa

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of MHC Inc. and subsidiaries ("MHC")Eleventh Supplemental Indenture, dated as of December 31,29, 2017, by and 2016,between Berkshire Hathaway Energy Company and The Bank of New York Mellon Trust Company, N.A., as trustee, relating to the 6.50% Senior Bonds due 2037 (incorporated by reference to Exhibit 4.1 to the Berkshire Hathaway Energy Company Current Report on Form 8-K dated January 5, 2018).

487


Exhibit No.Description
488


Exhibit No.Description
489


Exhibit No.Description
490


Exhibit No.Description
491


Exhibit No.Description

PACIFICORP

Basis for Opinion






Des Moines, Iowa
February 23, 2018

We have served as MHC's auditor since 1999.

31.3

MHC INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Amounts in millions)

 As of December 31,
 2017 2016
    
ASSETS
Current assets:   
Cash and cash equivalents$172
 $15
Receivables, net346
 284
Income taxes receivable51
 9
Inventories245
 264
Other current assets135
 35
Total current assets949
 607
    
Property, plant and equipment, net14,221
 12,835
Goodwill1,270
 1,270
Regulatory assets204
 1,161
Investments and restricted cash and investments730
 655
Receivable from affiliate431
 301
Other assets233
 216
    
Total assets$18,038
 $17,045

The accompanying notes are an integral part of these consolidated financial statements.

MHC INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (continued)
(Amounts in millions)

 As of December 31,
 2017 2016
    
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities:   
Accounts payable$451
 $302
Accrued interest48
 45
Accrued property, income and other taxes133
 138
Note payable to affiliate164
 31
Short-term debt
 99
Current portion of long-term debt350
 250
Other current liabilities128
 159
Total current liabilities1,274
 1,024
    
Long-term debt4,692
 4,051
Deferred income taxes2,235
 3,568
Regulatory liabilities1,661
 883
Asset retirement obligations528
 510
Other long-term liabilities326
 291
Total liabilities10,716
 10,327
    
Commitments and contingencies (Note 15)   
    
Shareholder's equity:   
Common stock - no par value, 1,000 shares authorized, 1,000 shares issued and outstanding
 
Additional paid-in capital2,430
 2,430
Retained earnings4,892
 4,288
Total shareholder's equity7,322
 6,718
    
Total liabilities and shareholder's equity$18,038
 $17,045

The accompanying notes are an integral part of these consolidated financial statements.


MHC INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Regulated electric$2,108
 $1,985
 $1,837
Regulated gas and other738
 646
 678
Total operating revenue2,846
 2,631
 2,515
      
Operating costs and expenses:     
Cost of fuel, energy and capacity434
 410
 433
Cost of gas sold and other447
 371
 407
Operations and maintenance784
 693
 707
Depreciation and amortization500
 479
 407
Property and other taxes119
 112
 110
Total operating costs and expenses2,284
 2,065
 2,064
      
Operating income562
 566
 451
      
Other income and (expense):     
Interest expense(215) (196) (184)
Allowance for borrowed funds15
 8
 8
Allowance for equity funds41
 19
 20
Other, net21
 18
 20
Total other income and (expense)(138) (151) (136)
      
Income before income tax benefit424
 415
 315
Income tax benefit(180) (130) (141)
      
Income from continuing operations604
 545
 456
      
Discontinued operations (Note 3):     
Income from discontinued operations
 
 22
Income tax expense
 
 6
Income on discontinued operations
 
 16
      
Net income$604
 $545
 $472

The accompanying notes are an integral part of these consolidated financial statements.


MHC INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
      
Net income$604
 $545
 $472
      
Other comprehensive income (loss), net of tax:     
Unrealized gains on available-for-sale securities, net of tax of $-, $1 and $-
 3
 
Unrealized losses on cash flow hedges, net of tax of $-, $- and $(4)
 
 (7)
Total other comprehensive income (loss), net of tax
 3
 (7)
      
Comprehensive income$604
 $548
 $465

The accompanying notes are an integral part of these consolidated financial statements.


MHC INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Amounts in millions)

     Accumulated  
     Other  
 Paid-in Retained Comprehensive Total
 Capital Earnings Loss, Net Equity
        
Balance, December 31, 2014$2,430
 $3,272
 $(23) $5,679
Net income
 472
 
 472
Other comprehensive loss
 
 (7) (7)
Balance, December 31, 20152,430
 3,744
 (30) 6,144
Net income
 545
 
 545
Other comprehensive income
 
 3
 3
Transfer to affiliate (Note 3)
 
 27
 27
Other equity transactions
 (1) 
 (1)
Balance, December 31, 20162,430
 4,288
 
 6,718
Net income
 604
 
 604
Balance, December 31, 2017$2,430
 $4,892
 $
 $7,322

The accompanying notes are an integral part of these consolidated financial statements.


MHC INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in millions)

 Years Ended December 31,
 2017 2016 2015
Cash flows from operating activities:     
Net income$604
 $545
 $472
Adjustments to reconcile net income to net cash flows from operating activities:     
Depreciation and amortization500
 479
 407
Deferred income taxes and amortization of investment tax credits334
 362
 276
Changes in other assets and liabilities37
 47
 49
Other, net(57) (92) (70)
Changes in other operating assets and liabilities:     
Receivables, net(61) (61) 93
Inventories19
 (27) (53)
Derivative collateral, net2
 5
 33
Pension and other postretirement benefit plans, net(11) (6) (8)
Accounts payable69
 39
 (76)
Accrued property, income and other taxes, net(42) 107
 213
Other current assets and liabilities1
 8
 12
Net cash flows from operating activities1,395
 1,406
 1,348
      
Net cash flows from investing activities:     
Utility construction expenditures(1,773) (1,636) (1,446)
Purchases of available-for-sale securities(143) (138) (142)
Proceeds from sales of available-for-sale securities137
 158
 135
Proceeds from sales of other investments2
 2
 13
Net increase in restricted cash and investments(98) (10) 
Net change in amounts receivable from parent(130) (13) (13)
Other, net(2) 10
 2
Net cash flows from investing activities(2,007) (1,627) (1,451)
      
Net cash flows from financing activities:     
Proceeds from long-term debt990
 62
 649
Repayments of long-term debt(255) (38) (426)
Net change in amounts receivable from/payable to affiliates133
 9
 3
Net proceeds from (repayments of) short-term debt(99) 99
 (50)
Other, net
 1
 
Net cash flows from financing activities769
 133
 176
      
Net change in cash and cash equivalents157
 (88) 73
Cash and cash equivalents at beginning of year15
 103
 30
Cash and cash equivalents at end of year$172
 $15
 $103

The accompanying notes are an integral part of these consolidated financial statements.


MHC INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)
Company Organization

MHC Inc. ("MHC") is an Iowa corporation with MidAmerican Funding, LLC ("MidAmerican Funding") as its sole shareholder. MidAmerican Funding is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). MHC constitutes substantially all of MidAmerican Funding's assets, liabilities and business activities except those relatedPrincipal Executive Officer Certification Pursuant to MidAmerican Funding's long-term debt securities. MHC conducts no business other than the ownership of its subsidiaries and related corporate services. MHC's principal subsidiary is MidAmerican Energy Company ("MidAmerican Energy"), a public utility with electric and natural gas operations. Direct wholly owned nonregulated subsidiaries of MHC are Midwest Capital Group, Inc. and MEC Construction Services Co.

(2)
Summary of Significant Accounting Policies

In addition to the following significant accounting policies, refer to Note 2 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K for significant accounting policies of MHC.

Basis ofConsolidation and Presentation

The Consolidated Financial Statements include the accounts of MHC and its subsidiaries in which it held a controlling financial interest asSection 302 of the dateSarbanes-Oxley Act of 2002.

Goodwill


(3)Discontinued Operations

Refer to Note 3 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K. The transfer of MidAmerican Energy's unregulated retail services business to a subsidiary of BHE repaid $117 million of MHC's note payable to BHE.

(4)    Property, Plant and Equipment, Net

Refer to Note 4 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K. In addition to MidAmerican Energy's property, plant and equipment, net, MHC had gross nonregulated property of $24 million and $22 million as of December 31, 2017 and 2016, respectively, related accumulated depreciation and amortization of $10 million and $9 million as of December 31, 2017 and 2016, respectively, and construction work-in-progress of $1 million as of December 31, 2016, which consisted primarily of a corporate aircraft owned by MHC.

(5)Jointly Owned Utility Facilities

Refer to Note 5 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.


(6)Regulatory Matters

Refer to Note 6 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

(7)Investments and Restricted Cash and Investments

Refer to Note 7 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K. In addition to MidAmerican Energy's investments and restricted cash and investments, MHC had corporate-owned life insurance policies in a Rabbi trust owned by MHC with a total cash surrender value of $2 million as of December 31, 2017 and 2016.

(8)Short-Term Debt and Credit Facilities

Refer to Note 8 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K. In addition to MidAmerican Energy's credit facilities, MHC has a $4 million unsecured credit facility, which expires in June 2018 and has a variable interest rate based on LIBOR plus a spread. As of December 31, 2017 and 2016, there were no borrowings outstanding under this credit facility. As of December 31, 2017, MHC was in compliance with the covenants of its credit facility.

(9)Long-Term Debt

Refer to Note 9 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

(10)Income Taxes

Tax Cuts and Jobs Act

The Tax Cuts and Jobs Act enacted on December 22, 2017 (the "2017 Tax Reform") impacts many areas of income tax law. The most material items include the reduction of the federal corporate tax rate from 35% to 21% effective January 1, 2018 and limitations on bonus depreciation for utility property. Accounting principles generally accepted in the United States of America ("GAAP") require the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. As a result of the 2017 Tax Reform, MHC reduced deferred income tax liabilities $1,822 million. As it is probable the change in deferred taxes for MHC's regulated businesses will be passed back to customers through regulatory mechanisms, MHC increased net regulatory liabilities by $1,845 million.

In December 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin ("SAB") 118 to assist in the implementation process of the 2017 Tax Reform by allowing for calculations to be classified as provisional and subject to remeasurement. There are three different classifications for the accounting: (1) completed, (2) not complete but reasonably estimable or (3) not complete and amounts are not reasonably estimable. MHC has recorded the impacts of the 2017 Tax Reform and believes all the impacts to be complete with the exception of interpretations of the bonus depreciation rules. MHC has determined the amounts recorded and the interpretations relating to this item to be provisional and subject to remeasurement during the measurement period upon obtaining the necessary additional information to complete the accounting. MHC believes its interpretations for bonus depreciation to be reasonable; however, as the guidance is clarified estimates may change. The accounting is estimated to be completed by December 2018.

MHC's income tax benefit from continuing operations consists of the following for the years ended December 31 (in millions):
492

 2017 2016 2015
Current:     
Federal$(489) $(478) $(411)
State(25) (14) (6)
 (514) (492) (417)
Deferred:     
Federal338
 367
 282
State(3) (4) (5)
 335
 363
 277
      
Investment tax credits(1) (1) (1)
Total$(180) $(130) $(141)


Exhibit No.Description
A reconciliation of the federal statutory income tax rate to MHC's effective income tax rate applicable to income before income tax benefit from continuing operations is as follows for the years ended December 31:
 2017 2016 2015
      
Federal statutory income tax rate35 % 35 % 35 %
Income tax credits(68) (60) (67)
State income tax, net of federal income tax benefit(4) (3) (2)
Effects of ratemaking(7) (3) (12)
2017 Tax Reform2
 
 
Other, net(1) 
 1
Effective income tax rate(43)% (31)% (45)%

Income tax credits relate primarily to production tax credits earned by MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity production tax credits are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Interim recognition of production tax credits in income is based on the annualized effective tax rate applied each period, similar to all book to tax differences. Recognition of production tax credits in income during interim periods of the year may vary significantly from actual amounts earned. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service.

MHC's net deferred income tax liability consists of the following as of December 31 (in millions):
 2017 2016
Deferred income tax assets:   
Regulatory liabilities$443
 $333
Asset retirement obligations160
 230
Employee benefits45
 66
Other62
 82
Total deferred income tax assets710
 711
    
Deferred income tax liabilities:   
Depreciable property(2,868) (3,767)
Regulatory assets(42) (471)
Other(35) (41)
Total deferred income tax liabilities(2,945) (4,279)
    
Net deferred income tax liability$(2,235) $(3,568)

As of December 31, 2017, MHC has available $40 million of state tax carryforwards, principally related to $583 million of net operating losses, that expire at various intervals between 2018 and 2036.

The United States Internal Revenue Service has closed its examination of BHE's income tax returns through December 31, 2009, including components related to MHC. In addition, state jurisdictions have closed their examinations of MidAmerican Energy's income tax returns for Iowa through December 31, 2013, for Illinois through December 31, 2008, and for other jurisdictions through December 31, 2009.


A reconciliation of the beginning and ending balances of MHC's net unrecognized tax benefits is as follows for the years ended December 31 (in millions):
 2017 2016
    
Beginning balance$10
 $10
Additions based on tax positions related to the current year1
 
Additions for tax positions of prior years23
 10
Reductions based on tax positions related to the current year(4) (2)
Reductions for tax positions of prior years(19) (8)
Interest and penalties1
 
Ending balance$12
 $10

As of December 31, 2017, MHC had unrecognized tax benefits totaling $39 million that, if recognized, would have an impact on the effective tax rate. The remaining unrecognized tax benefits relate to tax positions for which ultimate deductibility is highly certain but for which there is uncertainty as to the timing of such deductibility. Recognition of these tax benefits, other than applicable interest and penalties, would not affect MHC's effective income tax rate.

(11)Employee Benefit Plans

Refer to Note 11 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K for additional information regarding MHC's pension, supplemental retirement and postretirement benefit plans.

Pension and postretirement costs allocated by MHC to its parent and other affiliates in each of the years ended December 31, were as follows (in millions):
 2017 2016 2015
      
Pension costs$4
 $4
 $4
Other postretirement costs(3) (1) (2)

(12)Asset Retirement Obligations

Refer to Note 12 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

(13)Risk Management and Hedging Activities

Refer to Note 13 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

(14)Fair Value Measurements

Refer to Note 14 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

(15)Commitments and Contingencies

Refer to Note 15 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

Legal Matters

MHC is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MHC does not believe that such normal and routine litigation will have a material impact on its consolidated financial results.

(16)Components of Accumulated Other Comprehensive Loss, Net

Refer to Note 16 of MidAmerican Energy's Notes to Financial Statements in Item 8 of this Form 10-K.

(17)Other Income and (Expense) - Other, Net

Other, net, as shown on the Consolidated Statements of Operations, includes the following other income (expense) items for the years ended December 31 (in millions):
 2017 2016 2015
      
Corporate-owned life insurance income$13
 $8
 $4
Gain on redemption of auction rate securities
 5
 
Gains on sales of assets and other investments1
 3
 13
Interest income and other, net7
 2
 3
Total$21
 $18
 $20

MidAmerican Funding recognized a $13 million pre-tax gain on the sale of an investment in a generating facility lease in 2015.

(18)Supplemental Cash Flow Information

The summary of supplemental cash flow information as of and for the years ending December 31 is as follows (in millions):
 2017 2016 2015
Supplemental cash flow information:     
Interest paid, net of amounts capitalized$193
 $181
 $154
Income taxes received, net$463
 $600
 $621
      
Supplemental disclosure of non-cash investing and financing transactions:     
Accounts payable related to utility plant additions$224
 $131
 $249
Transfer of assets and liabilities to affiliate (note 3)$
 $90
 $

(19)Related Party Transactions

The companies identified as affiliates of MHC are Berkshire Hathaway and its subsidiaries, including BHE and its subsidiaries. The basis for the following transactions is provided for in service agreements between MHC and the affiliates.

MHC is reimbursed for charges incurred on behalf of its affiliates. The majority of these reimbursed expenses are for allocated general costs, such as insurance and building rent, and for employee wages, benefits and costs for corporate functions, such as information technology, human resources, treasury, legal and accounting. The amount of such reimbursements was $46 million, $35 million and $35 million for 2017, 2016 and 2015, respectively.

MHC reimbursed BHE in the amount of $7 million, $6 million and $7 million in 2017, 2016 and 2015, respectively, for its share of corporate expenses.

MidAmerican Energy purchases natural gas transportation and storage capacity services from Northern Natural Gas Company, a wholly owned subsidiary of BHE, and coal transportation services from BNSF Railway Company, a wholly-owned subsidiary of Berkshire Hathaway, in the normal course of business at either tariffed or market prices. These purchases totaled $122 million, $135 million and $165 million in 2017, 2016 and 2015, respectively.

MHC has a $300 million revolving credit arrangement carrying interest at the 30-day LIBOR rate plus a spread to borrow from BHE. Outstanding balances are unsecured and due on demand. The outstanding balance was $164 million at an interest rate of 1.629% as of December 31, 2017, and $31 million at an interest rate of 0.885% as of December 31, 2016, and is reflected as note payable to affiliate on the Consolidated Balance Sheet.

BHE has a $100 million revolving credit arrangement carrying interest at the 30-day LIBOR rate plus a spread to borrow from MHC. Outstanding balances are unsecured and due on demand. There were no borrowings outstanding throughout 2017 and 2016.


MHC settles all obligations of MidAmerican Funding including primarily interest costs on MidAmerican Funding's long-term debt. In 2017, MHC paid for MidAmerican Funding's redemption of a portion of its long-term debt through a tender offer. Net amounts paid by MHC on behalf of MidAmerican Funding totaled $130 million, $13 million and $13 million for 2017, 2016 and 2015, respectively.

MHC had accounts receivable from affiliates of $438 million and $306 million as of December 31, 2017 and 2016, respectively, that are reflected in receivables, net and receivable from affiliate on the Consolidated Balance Sheets. MHC also had accounts payable to affiliates of $14 million and $12 million as of December 31, 2017 and 2016, respectively, that are included in accounts payable on the Consolidated Balance Sheets.

MHC is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, MHC had a receivable from BHE of $51 million as of December 31, 2017, and a payable to BHE of $7 million as of December 31, 2016. MHC received net cash receipts for federal and state income taxes from BHE totaling $463 million, $600 million and $621 million for the years ended December 31, 2017, 2016 and 2015, respectively.

MHC recognizes the full amount of the funded status for its pension and postretirement plans, and amounts attributable to MHC's affiliates that have not previously been recognized through income are recognized as an intercompany balance with such affiliates. MHC adjusts these balances when changes to the funded status of the respective plans are recognized and does not intend to settle the balances currently. Amounts receivable from affiliates attributable to the funded status of employee benefit plans totaled $16 million and $12 million as of December 31, 2017 and 2016, respectively, and similar amounts payable to affiliates totaled $45 million and $36 million, as of December 31, 2017 and 2016, respectively. See Note 11 for further information pertaining to pension and postretirement accounting.

(20)Segment Information

MHC has identified two reportable operating segments: regulated electric and regulated gas. The previously reported nonregulated energy segment consisted substantially of MidAmerican Energy's unregulated retail services business, which was transferred to a subsidiary of BHE and is excluded from the information below related to the statements of operations for all periods presented. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting gas owned by others through its distribution system. Pricing for regulated electric and regulated gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. "Other" in the tables below consists principally of the nonregulated subsidiaries of MHC not engaged in the energy business. Refer to Note 10 for a discussion of items affecting income tax (benefit) expense for the regulated electric and gas operating segments.


The following tables provide information on a reportable segment basis (in millions):
 Years Ended December 31,
 2017 2016 2015
Operating revenue:     
Regulated electric$2,108
 $1,985
 $1,837
Regulated gas719
 637
 661
Other19
 9
 17
Total operating revenue$2,846
 $2,631
 $2,515
      
Depreciation and amortization:     
Regulated electric$458
 $436
 $366
Regulated gas42
 43
 41
Total depreciation and amortization$500
 $479
 $407
      
Operating income:     
Regulated electric$485
 $497
 $385
Regulated gas77
 68
 64
Other
 1
 2
Total operating income$562
 $566
 $451
      
Interest expense:     
Regulated electric$196
 $178
 $166
Regulated gas18
 18
 17
Other1
 
 1
Total interest expense$215
 $196
 $184
      
Income tax (benefit) expense from continuing operations:     
Regulated electric$(212) $(156) $(163)
Regulated gas29
 22
 16
Other3
 4
 6
Total income tax (benefit) expense from continuing operations$(180) $(130) $(141)
      
Net income:     
Regulated electric$570
 $512
 $413
Regulated gas35
 32
 33
Other(1) 1
 10
Income from continuing operations604
 545
 456
Income on discontinued operations
 
 16
Net income$604
 $545
 $472
      
Utility construction expenditures:     
Regulated electric$1,686
 $1,564
 $1,365
Regulated gas87
 72
 81
Total utility construction expenditures$1,773
 $1,636
 $1,446


 As of December 31,
 2017 2016 2015
Total assets:     
Regulated electric$16,105
 $15,304
 $14,161
Regulated gas1,482
 1,424
 1,330
Other451
 317
 468
Total assets$18,038
 $17,045
 $15,959

Goodwill by reportable segment as of December 31, 2017 and 2016 was as follows (in millions):
Regulated electric$1,191
Regulated gas79
Total$1,270


EXHIBIT INDEX
BERKSHIRE HATHAWAY ENERGY
3.1
3.2
3.3
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10

Exhibit No.
Description

4.11
4.12
4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22

Exhibit No.
Description

4.23
4.24
4.25
4.26
4.27
4.28
4.29
4.30
4.31
4.32
4.33
4.34
4.35

Exhibit No.
Description

4.36
4.37
4.38
4.39
4.40
4.41
4.42
4.43
4.44
4.45
4.46
4.47

Exhibit No.
Description

4.48
4.49
4.50
4.51
4.52
4.53
4.54
4.55
4.56
4.57
4.58
4.59
4.60

Exhibit No.
Description

4.61
4.62
4.63
4.64
4.65
4.66
10.1
10.2
10.3
10.4
10.5

Exhibit No.
Description

10.6
10.7
10.8
10.9
10.10
10.11
10.12
10.13
10.14
10.15
10.16
10.17
10.18*

Exhibit No.
Description

14.1
21.1
23.1
24.1
31.1
31.2
32.1
32.2

PACIFICORP
3.4
3.5
10.19*
10.20*
10.21*
10.22*
10.23*
10.24*
10.25*
10.26*
12.1
12.2
14.2
23.2
31.3
31.4
32.3

Exhibit No.
Description

32.4

BERKSHIRE HATHAWAY ENERGY AND PACIFICORP
4.68Mortgage and Deed of Trust dated as of January 9, 1989, between PacifiCorp and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, incorporated by reference to Exhibit 4-E to the PacifiCorp Form 8-B, as supplemented and modified by 31 Supplemental Indentures, each incorporated by reference, as follows:
4.67Mortgage and Deed of Trust dated as of January 9, 1989, between PacifiCorp and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, incorporated by reference to Exhibit 4-E to the PacifiCorp Form 8-B, as supplemented and modified by 28 Supplemental Indentures, each incorporated by reference, as follows:
ExhibitPacifiCorp
NumberFile TypeFile Date
(4)(b)(a)
SENovember 2, 1989
(4)(a)(a)
8-KJanuary 9, 1990
(4)(a)(a)
8-KSeptember 11, 1991
(4)(a)(a)
8-KJanuary 7, 1992
(4)(a)(a)
10-QQuarter ended March 31, 1992
(4)(a)(a)
10-QQuarter ended September 30, 1992
(4)(a)(a)
8-KApril 1, 1993
(4)(a)(a)
10-QQuarter ended September 30, 1993
10-QQuarter ended June 30, 1994
10-KYear ended December 31, 1994
10-KYear ended December 31, 1995
10-KYear ended December 31, 1996
10-KYear ended December 31, 1998
8-KNovember 21, 2001
10-QQuarter ended June 30, 2003
8-KSeptember 9, 2003
8-KAugust 26, 2004
8-KJune 14, 2005
8-KAugust 14, 2006
8-KMarch 14, 2007
8-KOctober 3, 2007
8-KJuly 17, 2008
8-KJanuary 8, 2009
8-KMay 12, 2011
8-KJanuary 6, 2012
8-KJune 6, 2013
8-KMarch 13, 2014
8-KJune 19, 2015
8-KJuly 13, 2018
8-KMarch 1, 2019
8-KApril 8, 2020
10.27
10.28
95

493
Exhibit No.
Description



Exhibit No.Description


MIDAMERICAN ENERGY
3.6
3.7
14.3
23.3
31.5
31.6
32.5
32.6

MIDAMERICAN FUNDING
3.8
3.9
3.10
14.4
31.7
31.8
32.7
32.8

BERKSHIRE HATHAWAY ENERGY, MIDAMERICAN ENERGY AND MIDAMERICAN FUNDING
4.68
4.69
4.70

494
Exhibit No.
Description



Exhibit No.Description
4.71
4.72
4.73
4.74
4.75
4.76
4.77
4.78
4.79
4.80
4.81
4.82
4.83
4.84
4.85
4.86
4.87

495
Exhibit No.
Description



Exhibit No.Description
4.88
496


Exhibit No.Description

4.89
4.90
4.91
4.92
4.93
4.94
4.95
4.96
4.97
10.29

BERKSHIRE HATHAWAY ENERGY AND MIDAMERICAN FUNDING
4.98

NEVADA POWER
3.11
3.12
4.99
4.100
10.30
12.3
14.5
23.4
31.9
31.10
32.9
32.10

BERKSHIRE HATHAWAY ENERGY AND NEVADA POWER
4.101
4.102
4.103
4.104
4.105
4.106
4.107
4.108
4.109

497
Exhibit No.
Description



Exhibit No.Description
4.110

4.111
10.31

SIERRA PACIFIC
3.13
3.14
4.112
4.113
4.114
10.32
12.4
14.6
31.11
31.12
32.11
32.12

498
Exhibit No.
Description



Exhibit No.Description

BERKSHIRE HATHAWAY ENERGY AND SIERRA PACIFIC
4.115

EASTERN ENERGY GAS
499


Exhibit No.Description

BERKSHIRE HATHAWAY ENERGY AND EASTERN ENERGY GAS
500


Exhibit No.Description
501


Exhibit No.Description
4.116
4.117
4.118
4.119
4.120
10.33

ALL REGISTRANTS
101The following financial information from each respective Registrant's Annual Report on Form 10-K for the year ended December 31, 2017 is formatted in XBRL (eXtensible Business Reporting Language) and included herein: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Changes in Equity, (v) the Consolidated Statements of Cash Flows and (vi) the Notes to Consolidated Financial Statements, tagged in summary and detail.

101The following financial information from each respective Registrant's Annual Report on Form 10-K for the year ended December 31, 2020 is formatted in iXBRL (Inline eXtensible Business Reporting Language) and included herein: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Changes in Equity, (v) the Consolidated Statements of Cash Flows and (vi) the Notes to Consolidated Financial Statements, tagged in summary and detail.

104Cover Page Interactive Data File formatted in iXBRL (Inline eXtensible Business Reporting Language) and contained in Exhibit 101.

(a)    Not available electronically on the SEC website as it was filed in paper previous to the electronic system currently in place.


*    Management contract or compensatory plan.

Pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, each Registrant has not filed as an exhibit to this Form 10-K certain instruments with respect to long-term debt not registered in which the total amount of securities authorized thereunder does not exceed 10% of the total assets of the respective Registrant. Each Registrant hereby agrees to furnish a copy of any such instrument to the Commission upon request.

502





SIGNATURES


BERKSHIRE HATHAWAY ENERGY COMPANY


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 23rd26th day of February 2018.

2021.
BERKSHIRE HATHAWAY ENERGY COMPANY
BERKSHIRE HATHAWAY ENERGY COMPANY
/s/ William J. Fehrman*
William J. Fehrman
Director, President and Chief Executive Officer
(principal executive officer)


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

SignatureTitleDate
/s/ William J. Fehrman*Director, President and Chief Executive OfficerFebruary 26, 2021
William J. Fehrman(principal executive officer)
SignatureTitleDate
/s/ William J. Fehrman*Calvin D. Haack*Director,Senior Vice President and Chief ExecutiveFinancial OfficerFebruary 23, 201826, 2021
William J. FehrmanCalvin D. Haack(principal executive officer)
/s/ Patrick J. Goodman*Executive Vice President andFebruary 23, 2018
Patrick J. GoodmanChief Financial Officer
(principal financial and accounting officer)
/s/ Gregory E. Abel*Executive Chairman of the Board of DirectorsFebruary 23, 201826, 2021
Gregory E. Abelof Directors
/s/ Warren E. Buffett*DirectorFebruary 23, 201826, 2021
Warren E. Buffett
/s/ Marc D. Hamburg*DirectorFebruary 23, 201826, 2021
Marc D. Hamburg
/s/ Walter Scott, Jr.*DirectorFebruary 23, 201826, 2021
Walter Scott, Jr.
*By: /s/ Natalie L. HockenAttorney-in-FactFebruary 23, 201826, 2021
Natalie L. Hocken





503



SIGNATURES


PACIFICORP


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 23rd26th day of February 2018.

2021.
PACIFICORP
PACIFICORP
/s/ Nikki L. Kobliha
Nikki L. Kobliha
Director, Vice President, Chief Financial Officer and Treasurer
Treasurer
(principal financial and accounting officer)


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

SignatureTitleDate
/s/ William J. FehrmanChairman of the Board of Directors and ChiefFebruary 26, 2021
William J. FehrmanExecutive Officer
(principal executive officer)
SignatureTitleDate
/s/ William J. Fehrman

Chairman of the Board of Directors,February 23, 2018
William J. Fehrman

President and Chief Executive Officer
(principal executive officer)
/s/ Nikki L. KoblihaDirector, Vice President, Chief Financial Officer andFebruary 23, 201826, 2021
Nikki L. KoblihaOfficer and Treasurer
(principal financial and accounting officer)
/s/ Stefan A. BirdDirectorFebruary 23, 201826, 2021
Stefan A. Bird
/s/ Cindy A. CraneCalvin D. HaackDirectorFebruary 23, 201826, 2021
Cindy A. CraneCalvin D. Haack
/s/ Patrick J. GoodmanDirectorFebruary 23, 2018
Patrick J. Goodman
/s/ Natalie L. HockenDirectorFebruary 23, 201826, 2021
Natalie L. Hocken
/s/ Gary W. HoogeveenDirectorFebruary 26, 2021
Gary W. Hoogeveen



504



SIGNATURES


MIDAMERICAN ENERGY COMPANY


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 23rd26th day of February 2018.

2021.
MIDAMERICAN ENERGY COMPANY
MIDAMERICAN ENERGY COMPANY/s/ Kelcey A. Brown
Kelcey A. Brown
/s/ Adam L. Wright
Adam L. Wright
Director, President and Chief Executive Officer
(principal executive officer)


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated:

SignatureTitleDate
/s/ Kelcey A. BrownDirector, President and Chief Executive OfficerFebruary 26, 2021
Kelcey A. Brown(principal executive officer)
SignatureTitleDate
/s/ Adam L. WrightDirector, President and Chief Executive OfficerFebruary 23, 2018
Adam L. Wright(principal executive officer)
/s/ Thomas B. SpecketerDirector, Vice President and Chief Financial OfficerFebruary 23, 201826, 2021
Thomas B. SpecketerChief Financial Officer
(principal financial and accounting officer)
/s/ Robert B. BerntsenDirectorFebruary 23, 2018
Robert B. Berntsen



505



SIGNATURES


MIDAMERICAN FUNDING, LLC


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 23rd26th day of February 2018.

2021.
MIDAMERICAN FUNDING, LLC
MIDAMERICAN FUNDING, LLC/s/ Kelcey A. Brown
Kelcey A. Brown
/s/ Adam L. Wright
Adam L. Wright
Manager and President
(principal executive officer)


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated:

SignatureTitleDate
/s/ Kelcey A. BrownManager and PresidentFebruary 26, 2021
Kelcey A. Brown(principal executive officer)
SignatureTitleDate
/s/ Adam L. WrightManager and PresidentFebruary 23, 2018
Adam L. Wright(principal executive officer)
/s/ Thomas B. SpecketerVice President and ControllerFebruary 23, 201826, 2021
Thomas B. Specketer(principal financial and accounting officer)
/s/ Daniel S. FickManagerFebruary 23, 201826, 2021
Daniel S. Fick
/s/ Patrick J. GoodmanCalvin D. HaackManagerFebruary 23, 201826, 2021
Patrick J. GoodmanCalvin D. Haack
/s/ Natalie L. HockenManagerFebruary 23, 201826, 2021
Natalie L. Hocken



506



SIGNATURES


NEVADA POWER COMPANY


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 23rd26th day of February 2018.

2021.
NEVADA POWER COMPANY
/s/ Paul J. CaudillDouglas A. Cannon
Paul J. CaudillDouglas A. Cannon
Director, President and Chief Executive Officer
(principal executive officer)


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated:

SignatureTitleDate
/s/ Douglas A. CannonDirector, President and Chief Executive OfficerFebruary 26, 2021
Douglas A. Cannon(principal executive officer)
Signature/s/ Michael E. ColeTitleDirector, Vice President, Chief Financial Officer and TreasurerDateFebruary 26, 2021
Michael E. Cole
/s/ Paul J. CaudillDirector and Chief Executive OfficerFebruary 23, 2018
Paul J. Caudill(principal executive officer)
/s/ E. Kevin BethelDirector, Senior Vice President and ChiefFebruary 23, 2018
E. Kevin BethelFinancial Officer
(principal financial and accounting officer)
/s/ Douglas A. CannonBrandon M. BarkhuffDirectorFebruary 23, 201826, 2021
Douglas A. CannonBrandon M. Barkhuff
/s/ Patrick S. EganDirectorFebruary 23, 2018
Patrick S. Egan
/s/ Shawn M. EliceguiDirectorFebruary 23, 2018
Shawn M. Elicegui

/s/ Kevin C. GeraghtyDirectorFebruary 23, 2018
Kevin C. Geraghty
/s/ Jennifer L. OswaldDirectorFebruary 23, 201826, 2021
Jennifer L. Oswald
/s/ Anthony F. Sanchez, IIIDirectorFebruary 26, 2021
Anthony F. Sanchez, III



507



SIGNATURES


SIERRA PACIFIC POWER COMPANY


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 23rd26th day of February 2018.

2021.
SIERRA PACIFIC POWER COMPANY
/s/ Paul J. CaudillDouglas A. Cannon
Paul J. CaudillDouglas A. Cannon
Director, President and Chief Executive Officer
(principal executive officer)


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated:

SignatureTitleDate
/s/ Douglas A. CannonDirector, President and Chief Executive OfficerFebruary 26, 2021
Douglas A. Cannon(principal executive officer)
Signature/s/ Michael E. ColeTitleDirector, Vice President, Chief Financial Officer and TreasurerDateFebruary 26, 2021
Michael E. Cole
/s/ Paul J. CaudillDirector and Chief Executive OfficerFebruary 23, 2018
Paul J. Caudill(principal executive officer)
/s/ E. Kevin BethelDirector, Senior Vice President and ChiefFebruary 23, 2018
E. Kevin BethelFinancial Officer
(principal financial and accounting officer)
/s/ Douglas A. CannonBrandon M. BarkhuffDirectorFebruary 23, 201826, 2021
Douglas A. CannonBrandon M. Barkhuff
/s/ Patrick S. EganDirectorFebruary 23, 2018
Patrick S. Egan
/s/ Shawn M. EliceguiDirectorFebruary 23, 2018
Shawn M. Elicegui
/s/ Kevin C. GeraghtyDirectorFebruary 23, 2018
Kevin C. Geraghty
/s/ Jennifer L. OswaldDirectorFebruary 23, 201826, 2021
Jennifer L. Oswald
/s/ Anthony F. Sanchez, IIIDirectorFebruary 26, 2021
Anthony F. Sanchez, III



508



SIGNATURES

EASTERN ENERGY GAS HOLDINGS, LLC

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on this 26th day of February 2021.
EASTERN ENERGY GAS HOLDINGS, LLC
/s/ Paul E. Ruppert
Paul E. Ruppert
President and Chief Executive Officer
(principal executive officer)
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated:
SignatureTitleDate
/s/ Paul E. RuppertPresident and Chief Executive OfficerFebruary 26, 2021
Paul E. Ruppert(principal executive officer)
/s/ Scott C. MillerVice President, Chief Financial Officer and TreasurerFebruary 26, 2021
Scott C. Miller(principal financial officer)
/s/ Mark A. HewettManagerFebruary 26, 2021
Mark A. Hewett
/s/ Calvin D. HaackManagerFebruary 26, 2021
Calvin D. Haack
/s/ Natalie L. HockenManagerFebruary 26, 2021
Natalie L. Hocken
509


SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT TO SECTION 15(D) OF THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED SECURITIES PURSUANT TO SECTION 12 OF THE ACT


No annual report to security holders covering each respective Registrant's last fiscal year or proxy material has been sent to security holders.





448
510