0000092122us-gaap:FairValueMeasurementsRecurringMemberso:SouthernPowerMember2023-03-31
Table of ContentsIndex to Financial Statements

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
þQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2017March 31, 2023
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to

Commission

File Number
Registrant,
State of Incorporation,

Address and Telephone Number
I.R.S. Employer

Identification No.
1-35261-3526
The Southern Company58-0690070
(A Delaware Corporation)
30 Ivan Allen Jr. Boulevard, N.W.
Atlanta, Georgia 30308
(404) 506-5000
(A Delaware Corporation)
30 Ivan Allen Jr. Boulevard, N.W.
Atlanta, Georgia 30308
(404) 506-5000
58-0690070
1-3164
1-3164
Alabama Power Company
63-0004250
(An Alabama Corporation)
600 North 18th Street
Birmingham, Alabama 35203
(205) 257-1000
(An Alabama Corporation)
600 North 18th Street
Birmingham, Alabama 35203
(205) 257-1000
63-0004250
1-6468
1-6468
Georgia Power Company
58-0257110
(A Georgia Corporation)
241 Ralph McGill Boulevard, N.E.
Atlanta, Georgia 30308
(404) 506-6526
(A Georgia Corporation)
241 Ralph McGill Boulevard, N.E.
Atlanta, Georgia 30308
(404) 506-6526
58-0257110
001-11229
001-31737
Gulf Power Company
(A Florida Corporation)
One Energy Place
Pensacola, Florida 32520
(850) 444-6111
59-0276810
001-11229
Mississippi Power Company
64-0205820
(A Mississippi Corporation)
2992 West Beach Boulevard
Gulfport, Mississippi 39501
(228) 864-1211
(A Mississippi Corporation)
2992 West Beach Boulevard
Gulfport, Mississippi 39501
(228) 864-1211
64-0205820
001-37803
001-37803
Southern Power Company
58-2598670
(A Delaware Corporation)
30 Ivan Allen Jr. Boulevard, N.W.
Atlanta, Georgia 30308
(404) 506-5000
(A Delaware Corporation)
30 Ivan Allen Jr. Boulevard, N.W.
Atlanta, Georgia 30308
(404) 506-5000
58-2598670
1-14174
1-14174
Southern Company Gas
(A Georgia Corporation)
Ten Peachtree Place, N.E.
Atlanta, Georgia 30309
(404) 584-4000
58-2210952

(A Georgia Corporation)

Ten Peachtree Place, N.E.
Atlanta, Georgia 30309
(404) 584-4000


Table of ContentsIndex to Financial Statements

Securities registered pursuant to Section 12(b) of the Act:
RegistrantTitle of Each ClassTrading
Symbol(s)
Name of Each Exchange
on Which Registered
The Southern CompanyCommon Stock, par value $5 per shareSONew York Stock Exchange
(NYSE)
The Southern CompanySeries 2017B 5.25% Junior Subordinated Notes due 2077SOJCNYSE
The Southern CompanySeries 2020A 4.95% Junior Subordinated Notes due 2080SOJDNYSE
The Southern CompanySeries 2020C 4.20% Junior Subordinated Notes due 2060SOJENYSE
The Southern CompanySeries 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081SO 81NYSE
Georgia Power CompanySeries 2017A 5.00% Junior Subordinated Notes due 2077GPJANYSE
Southern Power CompanySeries 2016B 1.850% Senior Notes due 2026SO/26ANYSE
Indicate by check mark whether the registrants (1) have 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 registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. Yes þ No ¨
Indicate by check mark whether the registrants have submitted electronically and posted on their corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrants were required to submit and post such files). Yes þ No ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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. (Check one):
RegistrantLarge Accelerated Filer
Large
Accelerated

Filer
Non-accelerated Filer
Accelerated
Filer
Smaller
Reporting
Company
Non-
accelerated
Filer
Smaller
Reporting
Emerging
Growth
Company
Emerging
Growth
Company
The Southern CompanyXX
Alabama Power CompanyXX
Georgia Power CompanyXX
Gulf Power CompanyX
Mississippi Power CompanyXX
Southern Power CompanyXX
Southern Company GasXX
If an emerging growth company, indicate by check mark if the registrant has 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. ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No þ (Response applicable to all registrants.)
RegistrantDescription of Common Stock
Description of
Common Stock
Shares Outstanding at September 30, 2017
March 31, 2023
The Southern CompanyPar Value $5 Per Share1,090,402,540 1,003,627,691
Alabama Power CompanyPar Value $40 Per Share30,537,500 30,537,500
Georgia Power CompanyWithout Par Value9,261,500 9,261,500
GulfMississippi Power CompanyWithout Par Value1,121,000 7,392,717
Mississippi Power CompanyWithout Par Value1,121,000
Southern Power CompanyPar Value $0.01 Per Share1,000 1,000
Southern Company GasPar Value $0.01 Per Share100 100
This combined Form 10-Q is separately filed by The Southern Company, Alabama Power Company, Georgia Power Company, Gulf Power Company, Mississippi Power Company, Southern Power Company, and Southern Company Gas. Information contained herein relating to any individual registrant is filed by such registrant on its own behalf. Each registrant makes no representation as to information relating to the other registrants.

2

Table of Contents
INDEX TO QUARTERLY REPORT ON FORM 10-Q
September 30, 2017

TABLE OF CONTENTS
Page
PART I—FINANCIAL INFORMATION
Item 1.
Number9
Item 2.
PART I—FINANCIAL INFORMATION
Item 1.Financial Statements (Unaudited)
Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations
Item 3.

3

INDEX TO QUARTERLY REPORT ON FORM 10-Q
September 30, 2017


Page
Number
PART I—FINANCIAL INFORMATION (CONTINUED)
Item 3.
Item 4.
PART II—OTHER INFORMATION
Item 1.
Item 1A.
Item 2.Unregistered Sales of Equity Securities and Use of ProceedsInapplicable
Item 3.Defaults Upon Senior SecuritiesInapplicable
Item 4.Mine Safety DisclosuresInapplicable
Item 5.Other InformationInapplicable
Item 6.

3

Table of ContentsIndex to Financial Statements

DEFINITIONS
TermMeaning
2022 ARP
2012 MPSC CPCN OrderA detailed order issued by the Mississippi PSC in April 2012 confirming the CPCN originally approved by the Mississippi PSC in 2010 authorizing the acquisition, construction, and operation of the Kemper IGCC
2013 ARPAlternativeAlternate Rate Plan approved by the Georgia PSC in 20132022 for Georgia Power for the years 20142023 through 2016 and subsequently extended through 20192025
AFUDCAllowance for funds used during construction
Alabama PowerAlabama Power Company
ASCAccounting Standards Codification
ASUAccounting Standards Update
Atlanta Gas LightAtlanta Gas Light Company, a wholly-owned subsidiary of Southern Company Gas
Atlantic Coast PipelineAtlantic Coast Pipeline, LLC, a joint venture to constructAmended and operate a natural gas pipeline in which Southern Company Gas has a 5% ownership interest
Baseload ActState of Mississippi legislation designed to enhance the Mississippi PSC's authority to facilitate development and construction of baseload generation in the State of Mississippi
CCRCoal combustion residuals
Clean Power Plan
Final action published by the EPA in 2015 that established guidelines for states to develop plans to meet EPA-mandated CO2 emission rates or emission reduction goals for existing electric generating units
CO2
Carbon dioxide
CODCommercial operation date
Contractor Settlement AgreementThe December 31, 2015 agreement between Westinghouse and the Vogtle Owners resolving disputes between the Vogtle Owners and the EPC Contractor under the Vogtle 3 and 4 Agreement
Cooperative EnergyElectric cooperative in Mississippi formerly known as South Mississippi Electric Power Association (SMEPA)
CPCNCertificate of public convenience and necessity
CWIPConstruction work in progress
Dalton PipelineA 50% undivided ownership interest of Southern Company Gas in a pipeline facility in Georgia
DOEU.S. Department of Energy
ECO PlanMississippi Power's Environmental Compliance Overview Plan
Eligible Project CostsCertain costs of construction relating to Plant Vogtle Units 3 and 4 that are eligible for financing under the Title XVII Loan Guarantee Program
EPAU.S. Environmental Protection Agency
EPC ContractorWestinghouse and its affiliate, WECTEC (formerly known as CB&I Stone & Webster, Inc.), formerly a subsidiary of The Shaw Group Inc. and Chicago Bridge & Iron Company N.V.; the former engineering, procurement, and construction contractor for Plant Vogtle Units 3 and 4
FASBFinancial Accounting Standards Board
FERCFederal Energy Regulatory Commission
FFBFederal Financing Bank
FitchFitch Ratings, Inc.
Form 10-KAnnual Report on Form 10-K of Southern Company, Alabama Power, Georgia Power, Gulf Power, Mississippi Power, Southern Power, and Southern Company Gas for the year ended December 31, 2016, as applicable
GAAPU.S. generally accepted accounting principles
Georgia PowerGeorgia Power Company
Gulf PowerGulf Power Company
Heating Degree DaysA measure of weather, calculated when the average daily temperatures are less than 65 degrees Fahrenheit
Horizon PipelineHorizon Pipeline Company, LLC

DEFINITIONS
(continued)
TermMeaning
IGCCIntegrated coal gasification combined cycle
IICIntercompany interchange contract
Illinois CommissionIllinois Commerce Commission, the state regulatory agency for Nicor Gas
IRCInternal Revenue Code of 1986, as amended
IRSInternal Revenue Service
ITCInvestment tax credit
Kemper IGCCMississippi Power's IGCC project in Kemper County, Mississippi
KWHKilowatt-hour
LIBORLondon Interbank Offered Rate
LIFOLast-in, first-out
LNGLiquefied natural gas
Restated Loan Guarantee AgreementLoan guarantee agreement entered into by Georgia Power with the DOE in 2014, as amended and restated in March 2019, under which the proceeds of borrowings may be used to reimburse Georgia Power for Eligible Project Costs incurred in connection with its construction of Plant Vogtle Units 3 and 4
LOCOMAROLower of weighted average cost or current market priceAsset retirement obligation
LTSAAtlanta Gas LightLong-term service agreement
MATS ruleMercury and Air Toxics Standards rule
MergerThe merger, effective July 1, 2016, ofAtlanta Gas Light Company, a wholly-owned direct subsidiary of Southern Company withGas
BechtelBechtel Power Corporation, the primary contractor for the remaining construction activities for Plant Vogtle Units 3 and into4
Bechtel AgreementThe 2017 construction completion agreement between the Vogtle Owners and Bechtel
CCRCoal combustion residuals
CCR RuleDisposal of Coal Combustion Residuals from Electric Utilities final rule published by the EPA in 2015
Chattanooga GasChattanooga Gas Company, a wholly-owned subsidiary of Southern Company Gas with
Clean Air ActClean Air Act Amendments of 1990
Contractor Settlement AgreementThe December 31, 2015 agreement between Westinghouse and the Vogtle Owners resolving disputes between the Vogtle Owners and the EPC Contractor under the Vogtle 3 and 4 Agreement
COVID-19The novel coronavirus disease declared a pandemic by the World Health Organization and the Centers for Disease Control and Prevention in March 2020
CWIPConstruction work in progress
DaltonCity of Dalton, Georgia, an incorporated municipality in the State of Georgia, acting by and through its Board of Water, Light, and Sinking Fund Commissioners
Dalton PipelineA pipeline facility in Georgia in which Southern Company Gas continuing as the surviving corporationhas a 50% undivided ownership interest
Mirror CWIPDOEA regulatory liability used byU.S. Department of Energy
ECO PlanMississippi Power's environmental compliance overview plan
ELGEffluent limitations guidelines
Eligible Project CostsCertain costs of construction relating to Plant Vogtle Units 3 and 4 that are eligible for financing under the loan guarantee program established under Title XVII of the Energy Policy Act of 2005
EPAU.S. Environmental Protection Agency
EPC ContractorWestinghouse and its affiliate, WECTEC Global Project Services Inc.; the former engineering, procurement, and construction contractor for Plant Vogtle Units 3 and 4
FCCFederal Communications Commission
FERCFederal Energy Regulatory Commission
FFBFederal Financing Bank
FitchFitch Ratings, Inc.
Form 10-KAnnual Report on Form 10-K of Southern Company, Alabama Power, Georgia Power, Mississippi Power, to record customer refunds resulting from a 2015 Mississippi PSC orderSouthern Power, and Southern Company Gas for the year ended December 31, 2022, as applicable
GAAPU.S. generally accepted accounting principles
Georgia PowerGeorgia Power Company
Guarantee Settlement AgreementThe June 9, 2017 settlement agreement between the Vogtle Owners and Toshiba related to certain payment obligations of the EPC Contractor guaranteed by Toshiba
Heating Degree DaysA measure of weather, calculated when the average daily temperatures are less than 65 degrees Fahrenheit
4

TermMeaning
Heating SeasonThe period from November through March when Southern Company Gas' natural gas usage and operating revenues are generally higher
HLBVHypothetical liquidation at book value
IGCCIntegrated coal gasification combined cycle, the technology originally approved for Mississippi Power's Kemper County energy facility
IICIntercompany Interchange Contract
IRPIntegrated resource plan
ITAACInspections, Tests, Analyses, and Acceptance Criteria, standards established by the NRC
ITCInvestment tax credit
JEAJacksonville Electric Authority
KWHKilowatt-hour
LIBORLondon Interbank Offered Rate
LIFOLast-in, first-out
LTSALong-term service agreement
MEAG PowerMunicipal Electric Authority of Georgia
Mississippi PowerMississippi Power Company
mmBtuMillion British thermal units
Moody'sMoody's Investors Service, Inc.
MRAMunicipal and Rural Associations
MWMegawatt
natural gas distribution utilitiesSouthern Company Gas' seven natural gas distribution utilities (Nicor Gas, Atlanta Gas Light, Virginia Natural Gas, Elizabethtown Gas, Florida City Gas,and Chattanooga Gas Company, and Elkton Gas)
NCCRGeorgia Power's Nuclear Construction Cost Recovery tariff
New Jersey BPUNDRNew Jersey Board of Public Utilities, the state regulatory agency for Elizabethtown GasAlabama Power's Natural Disaster Reserve
Nicor GasNorthern Illinois Gas Company, a wholly-owned subsidiary of Southern Company Gas
NRCN/MNot meaningful
NRCU.S. Nuclear Regulatory Commission
NYMEXNew York Mercantile Exchange, Inc.
OCIOther comprehensive income
PennEast PipelineOPCPennEast PipelineOglethorpe Power Corporation (an electric membership corporation)
PEPMississippi Power's Performance Evaluation Plan
PowerSecurePowerSecure, Inc., a wholly-owned subsidiary of Southern Company LLC,
PPAPower purchase agreements, as well as, for Southern Power, contracts for differences that provide the owner of a joint venturerenewable facility a certain fixed price for the electricity sold to constructthe grid
PSCPublic Service Commission
PTCProduction tax credit
Rate CNPAlabama Power's Rate Certificated New Plant, consisting of Rate CNP New Plant, Rate CNP Compliance, Rate CNP PPA, and operateRate CNP Depreciation
Rate ECRAlabama Power's Rate Energy Cost Recovery
Rate RSEAlabama Power's Rate Stabilization and Equalization
RegistrantsSouthern Company, Alabama Power, Georgia Power, Mississippi Power, Southern Power Company, and Southern Company Gas
ROEReturn on equity
S&PS&P Global Ratings, a natural gasdivision of S&P Global Inc.
SAVESteps to Advance Virginia's Energy, an infrastructure replacement program at Virginia Natural Gas
SCSSouthern Company Services, Inc., the Southern Company system service company and a wholly-owned subsidiary of Southern Company
SECU.S. Securities and Exchange Commission
5

TermMeaning
SEGCOSouthern Electric Generating Company, 50% owned by each of Alabama Power and Georgia Power
SNGSouthern Natural Gas Company, L.L.C., a pipeline system in which Southern Company Gas has a 20%50% ownership interest
PEPSOFRMississippi Power's Performance Evaluation PlanSecured Overnight Financing Rate
PiedmontSouthern CompanyPiedmont Natural GasThe Southern Company Inc.
Pivotal Utility HoldingsSouthern Company GasPivotal Utility Holdings, Inc.,Southern Company Gas and its subsidiaries
Southern Company Gas CapitalSouthern Company Gas Capital Corporation, a wholly-owned100%-owned subsidiary of Southern Company Gas doing business as Elizabethtown Gas, Elkton Gas, and Florida City Gas
Plant Vogtle Units 3 and 4Two new nuclear generating units under construction at Georgia Power's Plant Vogtle
PowerSecurePowerSecure, Inc.
Southern Company power poolThe operating arrangement whereby the integrated generating resources of the traditional electric operating companies and Southern Power (excluding subsidiaries) are subject to joint commitment and dispatch in order to serve their combined load obligations

DEFINITIONS
(continued)
TermMeaning
PPAPower purchase agreements, as well as, for Southern Power, contracts for differences that provide the owner of a renewable facility a certain fixed price for the electricity sold to the grid
PSCPublic Service Commission
PTCProduction tax credit
Rate CNPAlabama Power's Rate Certificated New Plant
Rate CNP ComplianceAlabama Power's Rate Certificated New Plant Compliance
Rate CNP PPAAlabama Power's Rate Certificated New Plant Power Purchase Agreement
Rate ECRAlabama Power's Rate Energy Cost Recovery
Rate NDRAlabama Power's Rate Natural Disaster Reserve
Rate RSEAlabama Power's Rate Stabilization and Equalization plan
registrantsSouthern Company, Alabama Power, Georgia Power, Gulf Power, Mississippi Power, Southern Power Company, and Southern Company Gas
ROEReturn on equity
S&PS&P Global Ratings, a division of S&P Global Inc.
scrubberFlue gas desulfurization system
SCSSouthern Company Services, Inc. (the Southern Company system service company)
SECU.S. Securities and Exchange Commission
SNGSouthern Natural Gas Company, L.L.C.
Southern CompanyThe Southern Company
Southern Company GasSouthern Company Gas and its subsidiaries
Southern Company Gas CapitalSouthern Company Gas Capital Corporation, a 100%-owned subsidiary of Southern Company Gas
Southern Company systemSouthern Company, the traditional electric operating companies, Southern Power, Southern Company Gas, (as of July 1, 2016), Southern Electric Generating Company,SEGCO, Southern Nuclear, SCS, Southern Communications Services, Inc., PowerSecure, (as of May 9, 2016), and other subsidiaries
Southern HoldingsSouthern Company Holdings, Inc., a wholly-owned subsidiary of Southern Company
Southern NuclearSouthern Nuclear Operating Company, Inc., a wholly-owned subsidiary of Southern Company
Southern PowerSouthern Power Company and its subsidiaries
SouthStarSouthStar Energy Services, LLC (a Marketer), a wholly-owned subsidiary of Southern Company Gas
STRIDESP SolarAtlanta Gas Light's Strategic Infrastructure DevelopmentSP Solar Holdings I, LP, a limited partnership indirectly owning substantially all of Southern Power's solar and Enhancement programbattery energy storage facilities, in which Southern Power has a 67% ownership interest
ToshibaSP WindToshiba Corporation, parentSP Wind Holdings II, LLC, a holding company owning a portfolio of Westinghouseeight operating wind facilities, in which Southern Power is the controlling partner in a tax equity arrangement
Toshiba GuaranteeSRRCertain payment obligations of the EPC Contractor guaranteed by ToshibaMississippi Power's System Restoration Rider, a tariff for retail property damage cost recovery and reserve
traditional electric operating companiesSubsidiary RegistrantsAlabama Power, Georgia Power, GulfMississippi Power, Southern Power, and Southern Company Gas
ToshibaToshiba Corporation, the parent company of Westinghouse
traditional electric operating companiesAlabama Power, Georgia Power, and Mississippi Power
TritonVCMTriton Container Investments, LLCVogtle Construction Monitoring
Virginia CommissionVIEVirginia State Corporation Commission, the state regulatory agency for Variable interest entity
Virginia Natural Gas
Virginia Natural GasVirginia Natural Gas, Inc., a wholly-owned subsidiary of Southern Company Gas
Vogtle 3 and 4 AgreementAgreement entered into with the EPC Contractor in 2008 by Georgia Power, acting for itself and as agent for the Vogtle Owners, and rejected in bankruptcy in July 2017, pursuant to which the EPC Contractor agreed to design, engineer, procure, construct, and test Plant Vogtle Units 3 and 4
Vogtle OwnersGeorgia Power, OglethorpeOPC, MEAG Power, Corporation,and Dalton
Vogtle Services AgreementThe June 2017 services agreement between the Municipal Electric Authority of Georgia,Vogtle Owners and the CityEPC Contractor, as amended and restated in July 2017, for the EPC Contractor to transition construction management of Dalton, Georgia, an incorporated municipality in the State of Georgia acting byPlant Vogtle Units 3 and through its Board of Water, Light,4 to Southern Nuclear and Sinking Fund Commissionersto provide ongoing design, engineering, and procurement services to Southern Nuclear
WACOGWeighted average cost of gas
WECTECWestinghouseWECTEC Global Project Services Inc.
WestinghouseWestinghouse Electric Company LLC

6
CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This Quarterly Report on Form 10-Q contains forward-looking statements. Forward-looking statements include, among other things, statements concerning regulated rates, the strategic goals for the wholesale business, customer and sales growth, economic conditions, fuel and environmental cost recovery and other rate actions, current and proposed environmental regulations and related compliance plans and estimated expenditures, pending or potential litigation matters, access
Table of ContentsIndex to sources of capital, financing activities, completion dates of construction projects, completion of announced acquisitions or dispositions, filings with state and federal regulatory authorities, federal income tax benefits, estimated sales and purchases under power sale and purchase agreements, and estimated construction and other plans and expenditures. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "could," "should," "expects," "plans," "anticipates," "believes," "estimates," "projects," "predicts," "potential," or "continue" or the negative of these terms or other similar terminology. There are various factors that could cause actual results to differ materially from those suggested by the forward-looking statements; accordingly, there can be no assurance that such indicated results will be realized. These factors include:Financial Statements

the impact of recent and future federal and state regulatory changes, including environmental laws regulating emissions, discharges, and disposal to air, water, and land, and also changes in tax and other laws and regulations to which Southern Company and its subsidiaries are subject, including potential tax reform legislation, as well as changes in application of existing laws and regulations;
current and future litigation, regulatory investigations, proceedings, or inquiries;
the effects, extent, and timing of the entry of additional competition in the markets in which Southern Company's subsidiaries operate;
variations in demand for electricity and natural gas, including those relating to weather, the general economy and recovery from the last recession, population and business growth (and declines), the effects of energy conservation and efficiency measures, including from the development and deployment of alternative energy sources such as self-generation and distributed generation technologies, and any potential economic impacts resulting from federal fiscal decisions;
available sources and costs of natural gas and other fuels;
limits on pipeline capacity;
effects of inflation;
the ability to control costs and avoid cost overruns during the development, construction, and operation of facilities, which include the development and construction of generating facilities with designs that have not been finalized or previously constructed, including changes in labor costs and productivity, adverse weather conditions, shortages and inconsistent quality of equipment, materials, and labor, contractor or supplier delay, non-performance under construction, operating, or other agreements, operational readiness, including specialized operator training and required site safety programs, unforeseen engineering or design problems, start-up activities (including major equipment failure and system integration), and/or operational performance (including additional costs to satisfy any operational parameters ultimately adopted by any PSC);
the impact of any inability or other failure of Toshiba to perform its obligations under the Toshiba Guarantee, including any effect on the construction of Plant Vogtle Units 3 and 4;
the ability to construct facilities in accordance with the requirements of permits and licenses, to satisfy any environmental performance standards and the requirements of tax credits and other incentives, and to integrate facilities into the Southern Company system upon completion of construction;
investment performance of the Southern Company system's employee and retiree benefit plans and nuclear decommissioning trust funds;
advances in technology;
ongoing renewable energy partnerships and development agreements;
state and federal rate regulations and the impact of pending and future rate cases and negotiations, including rate actions relating to fuel and other cost recovery mechanisms;
legal proceedings and regulatory approvals and actions related to Plant Vogtle Units 3 and 4, including Georgia PSC approvals and NRC actions;




CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION
This Quarterly Report on Form 10-Q contains forward-looking statements. Forward-looking statements include, among other things, statements concerning the potential and expected effects of the continued COVID-19 pandemic, regulated rates, the strategic goals for the business, customer and sales growth, economic conditions, including inflation, cost recovery and other rate actions, projected equity ratios, current and proposed environmental regulations and related compliance plans and estimated expenditures, pending or potential litigation matters, access to sources of capital, financing activities, completion dates and costs of construction projects, matters related to the abandonment of the Kemper IGCC, completion of announced dispositions, filings with state and federal regulatory authorities, and estimated construction plans and expenditures. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "could," "would," "should," "expects," "plans," "anticipates," "believes," "estimates," "projects," "predicts," "potential," or "continue" or the negative of these terms or other similar terminology. There are various factors that could cause actual results to differ materially from those suggested by the forward-looking statements; accordingly, there can be no assurance that such indicated results will be realized. These factors include:

the impact of recent and future federal and state regulatory changes, including tax, environmental, and other laws and regulations to which Southern Company and its subsidiaries are subject, as well as changes in application of existing laws and regulations;
the extent and timing of costs and legal requirements related to CCR;
current and future litigation or regulatory investigations, proceedings, or inquiries, including litigation and other disputes related to the Kemper County energy facility and Plant Vogtle Units 3 and 4;
the effects, extent, and timing of the entry of additional competition in the markets in which Southern Company's subsidiaries operate, including from the development and deployment of alternative energy sources;
variations in demand for electricity and natural gas;
available sources and costs of natural gas and other fuels and commodities;
the ability to complete necessary or desirable pipeline expansion or infrastructure projects, limits on pipeline capacity, public and policymaker support for such projects, and operational interruptions to natural gas distribution and transmission activities;
transmission constraints;
the ability to control costs and avoid cost and schedule overruns during the development, construction, and operation of facilities or other projects, including Plant Vogtle Units 3 and 4 (which includes components based on new technology that only within the last few years began initial operation in the global nuclear industry at this scale) and Plant Barry Unit 8, due to current and/or future challenges which include, but are not limited to, changes in labor costs, availability, and productivity; challenges with the management of contractors or vendors; subcontractor performance; adverse weather conditions; shortages, delays, increased costs, or inconsistent quality of equipment, materials, and labor; contractor or supplier delay; the impacts of inflation; delays due to judicial or regulatory action; nonperformance under construction, operating, or other agreements; operational readiness, including specialized operator training and required site safety programs; engineering or design problems or any remediation related thereto; design and other licensing-based compliance matters including, for Plant Vogtle Unit 4, inspections and the timely submittal by Southern Nuclear of the ITAAC documentation and the related investigations, reviews, and approvals by the NRC necessary to support NRC authorization to load fuel; challenges with start-up activities, including major equipment failure, or system integration; and/or operational performance; continued challenges related to the COVID-19 pandemic or future pandemic health events; continued public and policymaker support for projects; environmental and geological conditions; delays or increased costs to interconnect facilities to transmission grids; and increased financing costs as a result of changes in market interest rates or as a result of project delays;
the ability to overcome or mitigate the current challenges at Plant Vogtle Units 3 and 4, as described in Note (B) to the Condensed Financial Statements under "Georgia Power – Nuclear Construction" in Item 1 herein, that could further impact the cost and schedule for the project;
legal proceedings and regulatory approvals and actions related to construction projects, such as Plant Vogtle Units 3 and 4 and Plant Barry Unit 8, including PSC approvals and FERC and NRC actions;
under certain specified circumstances, a decision by holders of more than 10% of the ownership interests of Plant Vogtle Units 3 and 4 not to proceed with construction;
the notices of tender by OPC and Dalton of a portion of their ownership interests in Plant Vogtle Units 3 and 4 to Georgia Power, including related litigation;
7

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION
(continued)
in the event Georgia Power becomes obligated to provide funding to MEAG Power with respect to the portion of MEAG Power's ownership interest in Plant Vogtle Units 3 and 4 involving JEA, any inability of Georgia Power to receive repayment of such funding;
the ability to construct facilities in accordance with the requirements of permits and licenses (including satisfaction of NRC requirements), to satisfy any environmental performance standards and the requirements of tax credits and other incentives, and to integrate facilities into the Southern Company system upon completion of construction;
investment performance of the employee and retiree benefit plans and nuclear decommissioning trust funds;
advances in technology, including the pace and extent of development of low- to no-carbon energy and battery energy storage technologies and negative carbon concepts;
performance of counterparties under ongoing renewable energy partnerships and development agreements;
state and federal rate regulations and the impact of pending and future rate cases and negotiations, including rate actions relatedrelating to ROE, equity ratios, additional generating capacity, and fuel and other cost recovery for the Kemper IGCC, including ongoing settlement discussions, Mississippi PSC review of the prudence of Kemper IGCC costs and approval of further permanent rate recovery plans, and related legal or regulatory proceedings;mechanisms;
the ability to successfully operate the traditional electric utilities' generating,operating companies' and SEGCO's generation, transmission, and distribution facilities, Southern Power's generation facilities, and Southern Company Gas' natural gas distribution and storage facilities and the successful performance of necessary corporate functions;
the inherent risks involved in operating and constructing nuclear generating facilities, including environmental, health, regulatory, natural disaster, terrorism, and financial risks;facilities;
the inherent risks involved in transporting and storing natural gas;
the performance of projects undertaken by the non-utility businesses and the success of efforts to invest in and develop new opportunities;
internal restructuring or other restructuring options that may be pursued;
potential business strategies, including acquisitions or dispositions of assets or businesses, including the proposed disposition by a wholly-owned subsidiary of Southern Company Gas of Elizabethtown Gas and Elkton Gas, which cannot be assured to be completed or beneficial to Southern Company or its subsidiaries;
the possibility that the anticipated benefits from the Merger cannot be fully realized or may take longer to realize than expected, the possibility that costs related to the integration of Southern Company and Southern Company Gas will be greater than expected, the ability to retain and hire key personnel and maintain relationships with customers, suppliers, or other business partners, and the diversion of management time on integration-related issues;
the ability of counterparties of Southern Company and its subsidiaries to make payments as and when due and to perform as required;
the ability to obtain new short- and long-term contracts with wholesale customers;
the direct or indirect effect on the Southern Company system's business resulting from cyber intrusion or terrorist incidentsphysical attack and the threat of terrorist incidents;cyber and physical attacks;
global and U.S. economic conditions, including impacts from recession, inflation, interest rate fluctuations, and financial market conditions, and the results of financing efforts;
access to capital markets and other financing sources;
changes in Southern Company's and any of its subsidiaries' credit ratings, including impacts on interest rates, access to capital markets, and collateral requirements;ratings;
the impactsreplacement of any sovereign financial issues, including impacts on interest rates, access to capital markets, impacts on foreign currency exchange rates, counterparty performance, and the economy in general, as well as potential impacts on the benefits of the DOE loan guarantees;LIBOR with an alternative reference rate;
the ability of Southern Company'sthe traditional electric utilitiesoperating companies to obtain additional generating capacity (or sell excess generating capacity) at competitive prices;
catastrophic events such as fires, earthquakes, explosions, floods, tornadoes, hurricanes and other storms, droughts, pandemic health events, such as influenzas,political unrest, wars, or other similar occurrences;
the potential effects of the continued COVID-19 pandemic, including, but not limited to, those described in Item 1A "Risk Factors" of the Form 10-K;
the direct or indirect effects on the Southern Company system's business resulting from incidents affecting the U.S. electric grid, natural gas pipeline infrastructure, or operation of generating or storage resources;
impairments of goodwill or long-lived assets;
the effect of accounting pronouncements issued periodically by standard-setting bodies; and
other factors discussed elsewhere herein and in other reports (including the Form 10-K) filed by the registrantsRegistrants from time to time with the SEC.
The registrantsRegistrants expressly disclaim any obligation to update any forward-looking statements.

8


THE SOUTHERN COMPANYPART I
AND SUBSIDIARY COMPANIES

Item 1. Financial Statements (Unaudited).
Page
9


THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
 
For the Three Months Ended September 30, For the Nine Months Ended September 30, For the Three Months Ended March 31,
2017 2016 2017 2016 20232022
(in millions) (in millions) (in millions)
Operating Revenues:       Operating Revenues:
Retail electric revenues$4,615
 $4,808
 $11,786
 $11,932
Retail electric revenues$3,599 $3,613 
Wholesale electric revenues718
 613
 1,867
 1,455
Wholesale electric revenues599 664 
Other electric revenues168
 181
 510
 529
Other electric revenues190 177 
Natural gas revenues532
 518
 2,746
 518
Natural gas revenues (includes alternative revenue programs of $12 and $—, respectively)Natural gas revenues (includes alternative revenue programs of $12 and $—, respectively)1,875 2,058 
Other revenues168
 144
 494
 281
Other revenues217 136 
Total operating revenues6,201
 6,264
 17,403
 14,715
Total operating revenues6,480 6,648 
Operating Expenses:       Operating Expenses:
Fuel1,285
 1,400
 3,372
 3,334
Fuel1,050 1,111 
Purchased power256
 227
 646
 581
Purchased power242 232 
Cost of natural gas134
 133
 1,085
 133
Cost of natural gas898 1,095 
Cost of other sales90
 84
 293
 161
Cost of other sales127 69 
Other operations and maintenance1,287
 1,411
 3,918
 3,616
Other operations and maintenance1,482 1,516 
Depreciation and amortization767
 695
 2,236
 1,805
Depreciation and amortization1,111 892 
Taxes other than income taxes303
 309
 941
 821
Taxes other than income taxes394 372 
Estimated loss on Kemper IGCC34
 88
 3,155
 222
Gain on dispositions, netGain on dispositions, net(42)(23)
Total operating expenses4,156
 4,347
 15,646
 10,673
Total operating expenses5,262 5,264 
Operating Income2,045
 1,917
 1,757
 4,042
Operating Income1,218 1,384 
Other Income and (Expense):       Other Income and (Expense):
Allowance for equity funds used during construction18
 52
 133
 150
Allowance for equity funds used during construction65 51 
Earnings from equity method investments32
 29
 100
 28
Earnings from equity method investments48 46 
Interest expense, net of amounts capitalized(407) (374) (1,248) (913)Interest expense, net of amounts capitalized(582)(462)
Other income (expense), net11
 (8) 2
 (66)Other income (expense), net147 145 
Total other income and (expense)(346) (301) (1,013) (801)Total other income and (expense)(322)(220)
Earnings Before Income Taxes1,699
 1,616
 744
 3,241
Earnings Before Income Taxes896 1,164 
Income taxes590
 439
 317
 917
Income taxes97 173 
Consolidated Net Income1,109
 1,177
 427
 2,324
Consolidated Net Income799 991 
Less:       
Dividends on preferred and preference stock of subsidiaries10
 11
 32
 34
Net income attributable to noncontrolling interests30
 27
 48
 39
Dividends on preferred stock of subsidiariesDividends on preferred stock of subsidiaries 
Net loss attributable to noncontrolling interestsNet loss attributable to noncontrolling interests(63)(45)
Consolidated Net Income Attributable to
Southern Company
$1,069
 $1,139
 $347
 $2,251
Consolidated Net Income Attributable to
Southern Company
$862 $1,032 
Common Stock Data:       Common Stock Data:
Earnings per share —       
Earnings per share -Earnings per share -
Basic$1.07
 $1.18
 $0.35
 $2.40
Basic$0.79 $0.97 
Diluted$1.06
 $1.17
 $0.35
 $2.38
Diluted$0.79 $0.97 
Average number of shares of common stock outstanding (in millions)       Average number of shares of common stock outstanding (in millions)
Basic1,003
 968
 998
 940
Basic1,091 1,063 
Diluted1,010
 975
 1,005
 945
Diluted1,098 1,069 
Cash dividends paid per share of common stock$0.5800
 $0.5600
 $1.7200
 $1.6625
The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

10


THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 
For the Three Months Ended September 30, For the Nine Months Ended September 30, For the Three Months Ended March 31,
2017 2016 2017 2016 20232022
(in millions) (in millions) (in millions)
Consolidated Net Income$1,109
 $1,177
 $427
 $2,324
Consolidated Net Income$799 $991 
Other comprehensive income (loss):       Other comprehensive income (loss):
Qualifying hedges:       Qualifying hedges:
Changes in fair value, net of tax of $15, $12, $32, and $(74),
respectively
25
 19
 54
 (118)
Reclassification adjustment for amounts included in net income,
net of tax of $(10), $2, $(36), and $13, respectively
(17) 2
 (59) 20
Changes in fair value, net of tax of $(23) and $8, respectivelyChanges in fair value, net of tax of $(23) and $8, respectively(63)19 
Reclassification adjustment for amounts included in net income,
net of tax of $7 and $6, respectively
Reclassification adjustment for amounts included in net income,
net of tax of $7 and $6, respectively
19 20 
Pension and other postretirement benefit plans:       Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income,
net of tax of $1, $1, $2, and $2, respectively
1
 1
 3
 3
Reclassification adjustment for amounts included in net income,
net of tax of $— and $1, respectively
Reclassification adjustment for amounts included in net income,
net of tax of $— and $1, respectively
 
Total other comprehensive income (loss)9
 22
 (2) (95)Total other comprehensive income (loss)(44)42 
Comprehensive Income1,118
 1,199
 425
 2,229
Comprehensive Income755 1,033 
Less:       
Dividends on preferred and preference stock of subsidiaries10
 11
 32
 34
Comprehensive income attributable to noncontrolling interests30
 27
 48
 39
Dividends on preferred stock of subsidiariesDividends on preferred stock of subsidiaries 
Comprehensive loss attributable to noncontrolling interestsComprehensive loss attributable to noncontrolling interests(63)(45)
Consolidated Comprehensive Income Attributable to
Southern Company
$1,078
 $1,161
 $345
 $2,156
Consolidated Comprehensive Income Attributable to
Southern Company
$818 $1,074 
The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.



11

Table of ContentsIndex to Financial Statements
THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)
For the Nine Months Ended September 30, For the Three Months Ended March 31,
2017 2016 20232022
(in millions) (in millions)
Operating Activities:   Operating Activities:
Consolidated net income$427
 $2,324
Consolidated net income$799 $991 
Adjustments to reconcile consolidated net income to net cash provided from operating activities —    Adjustments to reconcile consolidated net income to net cash provided from operating activities —
Depreciation and amortization, total2,564
 2,109
Depreciation and amortization, total1,233 989 
Deferred income taxes15
 (22)
Allowance for equity funds used during construction(133) (150)Allowance for equity funds used during construction(65)(51)
Pension, postretirement, and other employee benefits(64) (158)Pension, postretirement, and other employee benefits(126)(123)
Settlement of asset retirement obligations(137) (117)Settlement of asset retirement obligations(113)(87)
Hedge settlements
 (236)
Estimated loss on Kemper IGCC3,148
 222
Stock based compensation expenseStock based compensation expense92 85 
Natural gas cost under recovery – long-termNatural gas cost under recovery – long-term 162 
Retail fuel cost under recovery – long-termRetail fuel cost under recovery – long-term454 (130)
Other, net(8) (1)Other, net51 79 
Changes in certain current assets and liabilities —   Changes in certain current assets and liabilities —
-Receivables426
 (458)-Receivables319 (217)
-Prepayments-Prepayments(100)(86)
-Fossil fuel for generation59
 204
-Fossil fuel for generation(203)39 
-Materials and supplies-Materials and supplies(98)(28)
-Natural gas for sale, net of temporary LIFO liquidation
 (222)-Natural gas for sale, net of temporary LIFO liquidation267 450 
-Other current assets(164) (112)-Other current assets143 
-Accounts payable(467) (9)-Accounts payable(1,056)132 
-Accrued taxes157
 1,062
-Accrued taxes(237)(58)
-Accrued compensation(230) (122)-Accrued compensation(478)(470)
-Retail fuel cost over recovery(211) (106)
-Accrued interest-Accrued interest(127)(128)
-Natural gas cost over recovery-Natural gas cost over recovery117 — 
-Other current liabilities(129) 88
-Other current liabilities(28)35 
Net cash provided from operating activities5,253
 4,296
Net cash provided from operating activities844 1,592 
Investing Activities:   Investing Activities:
Business acquisitions, net of cash acquired(1,032) (9,513)
Property additions(5,242) (5,252)Property additions(1,850)(1,419)
Investment in restricted cash(16) (750)
Distribution of restricted cash33
 746
Nuclear decommissioning trust fund purchases(585) (838)Nuclear decommissioning trust fund purchases(256)(294)
Nuclear decommissioning trust fund sales580
 832
Nuclear decommissioning trust fund sales251 289 
Proceeds from dispositionsProceeds from dispositions103 91 
Cost of removal, net of salvage(208) (155)Cost of removal, net of salvage(135)(227)
Change in construction payables, net120
 (259)Change in construction payables, net(140)23 
Investment in unconsolidated subsidiaries(134) (1,421)
Payments pursuant to LTSAs(189) (125)
Other investing activities(14) 95
Other investing activities(91)(18)
Net cash used for investing activities(6,687) (16,640)Net cash used for investing activities(2,118)(1,555)
Financing Activities:   Financing Activities:
Increase (decrease) in notes payable, net(515) 655
Increase in notes payable, netIncrease in notes payable, net187 137 
Proceeds —   Proceeds —
Long-term debt4,068
 14,091
Long-term debt1,979 700 
Short-term borrowingsShort-term borrowings100 850 
Common stock613
 3,265
Common stock15 38 
Preferred stock250
 
Short-term borrowings1,263
 
Redemptions and repurchases —   Redemptions and repurchases —
Long-term debt(1,981) (2,405)Long-term debt(575)(977)
Preferred and preference stock(150) 
Short-term borrowings(409) (475)Short-term borrowings(400)(100)
Capital contributions from noncontrolling interestsCapital contributions from noncontrolling interests21 73 
Distributions to noncontrolling interests(89) (22)Distributions to noncontrolling interests(48)(97)
Capital contributions from noncontrolling interests79
 367
Purchase of membership interests from noncontrolling interests
 (129)
Payment of common stock dividends(1,716) (1,553)Payment of common stock dividends(742)(702)
Other financing activities(113) (185)Other financing activities(83)(115)
Net cash provided from financing activities1,300
 13,609
Net Change in Cash and Cash Equivalents(134) 1,265
Cash and Cash Equivalents at Beginning of Period1,975
 1,404
Cash and Cash Equivalents at End of Period$1,841
 $2,669
Net cash provided from (used for) financing activitiesNet cash provided from (used for) financing activities454 (193)
Net Change in Cash, Cash Equivalents, and Restricted CashNet Change in Cash, Cash Equivalents, and Restricted Cash(820)(156)
Cash, Cash Equivalents, and Restricted Cash at Beginning of PeriodCash, Cash Equivalents, and Restricted Cash at Beginning of Period2,037 1,829 
Cash, Cash Equivalents, and Restricted Cash at End of PeriodCash, Cash Equivalents, and Restricted Cash at End of Period$1,217 $1,673 
Supplemental Cash Flow Information:   Supplemental Cash Flow Information:
Cash paid (received) during the period for —   Cash paid (received) during the period for —
Interest (net of $72 and $94 capitalized for 2017 and 2016, respectively)$1,286
 $766
Interest (net of $32 and $23 capitalized for 2023 and 2022, respectively)Interest (net of $32 and $23 capitalized for 2023 and 2022, respectively)$652 $515 
Income taxes, net(187) (151)Income taxes, net(9)(8)
Noncash transactions — Accrued property additions at end of period805
 578
Noncash transactions —Noncash transactions —
Accrued property additions at end of periodAccrued property additions at end of period833 863 
Right-of-use assets obtained under operating leasesRight-of-use assets obtained under operating leases26 
Right-of-use assets obtained under finance leasesRight-of-use assets obtained under finance leases1 — 
Reassessment of right-of-use assets under operating leasesReassessment of right-of-use assets under operating leases 40 
The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

12

Table of ContentsIndex to Financial Statements
THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
 
Assets At September 30, 2017 At December 31, 2016AssetsAt March 31, 2023At December 31, 2022
 (in millions) (in millions)
Current Assets:    Current Assets:
Cash and cash equivalents $1,841
 $1,975
Cash and cash equivalents$1,053 $1,917 
Receivables —    Receivables —
Customer accounts receivable 1,744
 1,583
Energy marketing receivables 427
 623
Customer accountsCustomer accounts1,890 2,128 
Unbilled revenues 595
 706
Unbilled revenues596 1,012 
Under recovered fuel clause revenues 62
 
Under recovered fuel clause revenues484 10 
Income taxes receivable, current 138
 544
Other accounts and notes receivable 578
 377
Other accounts and notesOther accounts and notes510 637 
Accumulated provision for uncollectible accounts (43) (43)Accumulated provision for uncollectible accounts(80)(71)
Materials and supplies 1,499
 1,462
Materials and supplies1,756 1,664 
Fossil fuel for generation 571
 689
Fossil fuel for generation778 575 
Natural gas for sale 631
 631
Natural gas for sale216 438 
Prepaid expenses 365
 364
Prepaid expenses626 347 
Other regulatory assets, current 585
 581
Assets from risk management activities, net of collateralAssets from risk management activities, net of collateral53 115 
Regulatory assets – asset retirement obligationsRegulatory assets – asset retirement obligations342 332 
Natural gas cost under recoveryNatural gas cost under recovery 108 
Other regulatory assetsOther regulatory assets936 860 
Other current assets 209
 230
Other current assets395 344 
Total current assets 9,202
 9,722
Total current assets9,555 10,416 
Property, Plant, and Equipment:    Property, Plant, and Equipment:
In service 102,014
 98,416
In service118,690 117,529 
Less: Accumulated depreciation 31,164
 29,852
Less: Accumulated depreciation35,990 35,297 
Plant in service, net of depreciation 70,850
 68,564
Plant in service, net of depreciation82,700 82,232 
Other utility plant, netOther utility plant, net571 599 
Nuclear fuel, at amortized cost 865
 905
Nuclear fuel, at amortized cost849 843 
Construction work in progress 8,026
 8,977
Construction work in progress11,510 10,896 
Total property, plant, and equipment 79,741
 78,446
Total property, plant, and equipment95,630 94,570 
Other Property and Investments:    Other Property and Investments:
Goodwill 6,267
 6,251
Goodwill5,161 5,161 
Nuclear decommissioning trusts, at fair valueNuclear decommissioning trusts, at fair value2,245 2,145 
Equity investments in unconsolidated subsidiaries 1,637
 1,549
Equity investments in unconsolidated subsidiaries1,408 1,443 
Other intangible assets, net of amortization of $156 and $62
at September 30, 2017 and December 31, 2016, respectively
 902
 970
Nuclear decommissioning trusts, at fair value 1,783
 1,606
Leveraged leases 788
 774
Other intangible assets, net of amortization of $350 and $340, respectivelyOther intangible assets, net of amortization of $350 and $340, respectively397 406 
Miscellaneous property and investments 236
 270
Miscellaneous property and investments616 602 
Total other property and investments 11,613
 11,420
Total other property and investments9,827 9,757 
Deferred Charges and Other Assets:    Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortizationOperating lease right-of-use assets, net of amortization1,505 1,531 
Deferred charges related to income taxes 1,318
 1,629
Deferred charges related to income taxes876 866 
Prepaid pension costsPrepaid pension costs2,384 2,290 
Unamortized loss on reacquired debt 210
 223
Unamortized loss on reacquired debt234 238 
Deferred under recovered fuel clause revenuesDeferred under recovered fuel clause revenues1,702 2,056 
Regulatory assets – asset retirement obligations, deferredRegulatory assets – asset retirement obligations, deferred5,701 5,764 
Other regulatory assets, deferred 6,718
 6,851
Other regulatory assets, deferred5,886 5,918 
Other deferred charges and assets 1,513
 1,406
Other deferred charges and assets1,456 1,485 
Total deferred charges and other assets 9,759
 10,109
Total deferred charges and other assets19,744 20,148 
Total Assets $110,315
 $109,697
Total Assets$134,756 $134,891 
The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.



13

Table of ContentsIndex to Financial Statements
THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
 
Liabilities and Stockholders' Equity At September 30, 2017 At December 31, 2016Liabilities and Stockholders' EquityAt March 31, 2023At December 31, 2022
 (in millions) (in millions)
Current Liabilities:    Current Liabilities:
Securities due within one year $3,505
 $2,587
Securities due within one year$4,363 $4,285 
Notes payable 2,579
 2,241
Notes payable2,554 2,609 
Energy marketing trade payables 451
 597
Accounts payable 2,353
 2,228
Accounts payable2,365 3,525 
Customer deposits 550
 558
Customer deposits475 502 
Accrued taxes —    Accrued taxes —
Accrued income taxes 176
 193
Accrued income taxes52 60 
Unrecognized tax benefits 17
 385
Other accrued taxes 690
 667
Other accrued taxes435 764 
Accrued interest 443
 518
Accrued interest487 614 
Accrued compensation 703
 915
Accrued compensation617 1,127 
Asset retirement obligations, current 245
 378
Acquisitions payable 
 489
Other regulatory liabilities, current 139
 236
Asset retirement obligationsAsset retirement obligations709 694 
Liabilities from risk management activities, net of collateralLiabilities from risk management activities, net of collateral318 178 
Operating lease obligationsOperating lease obligations199 197 
Natural gas cost over recoveryNatural gas cost over recovery117 — 
Other regulatory liabilitiesOther regulatory liabilities287 382 
Other current liabilities 752
 925
Other current liabilities915 787 
Total current liabilities 12,603
 12,917
Total current liabilities13,893 15,724 
Long-term Debt 44,042
 42,629
Long-term Debt52,060 50,656 
Deferred Credits and Other Liabilities:    Deferred Credits and Other Liabilities:
Accumulated deferred income taxes 14,321
 14,092
Accumulated deferred income taxes10,488 10,036 
Deferred credits related to income taxesDeferred credits related to income taxes5,107 5,235 
Accumulated deferred ITCs 2,290
 2,228
Accumulated deferred ITCs2,112 2,133 
Employee benefit obligations 2,139
 2,299
Employee benefit obligations1,222 1,238 
Operating lease obligations, deferredOperating lease obligations, deferred1,374 1,388 
Asset retirement obligations, deferred 4,356
 4,136
Asset retirement obligations, deferred10,209 10,146 
Other cost of removal obligations 2,708
 2,748
Other cost of removal obligations1,921 1,903 
Other regulatory liabilities, deferred 449
 476
Other regulatory liabilities, deferred690 733 
Other deferred credits and liabilities 1,048
 1,278
Other deferred credits and liabilities1,118 1,167 
Total deferred credits and other liabilities 27,311
 27,257
Total deferred credits and other liabilities34,241 33,979 
Total Liabilities 83,956
 82,803
Total Liabilities100,194 100,359 
Redeemable Preferred Stock of Subsidiaries 361
 118
Redeemable Noncontrolling Interests 59
 164
Stockholders' Equity:    
Common Stockholders' Equity:    
Common stock, par value $5 per share —    
Authorized — 1.5 billion shares    
Issued — September 30, 2017: 1.0 billion shares    
— December 31, 2016: 991 million shares    
Treasury — September 30, 2017: 0.9 million shares    
— December 31, 2016: 0.8 million shares    
Par value 5,018
 4,952
Paid-in capital 10,300
 9,661
Treasury, at cost (35) (31)
Retained earnings 8,981
 10,356
Accumulated other comprehensive loss (182) (180)
Total Common Stockholders' Equity 24,082
 24,758
Preferred and Preference Stock of Subsidiaries 462
 609
Noncontrolling Interests 1,395
 1,245
Total Stockholders' Equity 25,939
 26,612
Total Stockholders' Equity (See accompanying statements)
Total Stockholders' Equity (See accompanying statements)
34,562 34,532 
Total Liabilities and Stockholders' Equity $110,315
 $109,697
Total Liabilities and Stockholders' Equity$134,756 $134,891 
The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

14
15

Table of ContentsIndex to Financial Statements
SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSIONCONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED)
Southern Company Common Stockholders' Equity
 Number of
Common Shares
Common StockAccumulated
Other
Comprehensive Income
(Loss)
 IssuedTreasuryPar ValuePaid-In CapitalTreasuryRetained EarningsNoncontrolling InterestsTotal
 (in millions)
Balance at December 31, 20211,061 (1)$5,279 $11,950 $(47)$10,929 $(237)$4,402 $32,276 
Consolidated net income (loss)— — — — — 1,032 — (45)987 
Other comprehensive income— — — — — — 42 — 42 
Stock issued— 31 — — — — 38 
Stock-based compensation— — — — — — — 
Cash dividends of $0.66 per share— — — — — (702)— — (702)
Capital contributions from
   noncontrolling interests
— — — — — — — 73 73 
Distributions to noncontrolling interests— — — — — — — (98)(98)
Other— — — (2)— — 
Balance at March 31, 20221,064 (1)$5,286 $11,994 $(49)$11,261 $(195)$4,332 $32,629 
Balance at December 31, 20221,090 (1)$5,417 $13,673 $(53)$11,538 $(167)$4,124 $34,532 
Consolidated net income (loss)     862  (63)799 
Other comprehensive income (loss)      (44) (44)
Stock issued2  4 11     15 
Stock-based compensation   29     29 
Cash dividends of $0.68 per share     (742)  (742)
Capital contributions from
   noncontrolling interests
       21 21 
Distributions to noncontrolling interests       (48)(48)
Other   2 (2)    
Balance at March 31, 20231,092 (1)$5,421 $13,715 $(55)$11,658 $(211)$4,034 $34,562 

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

15

Table of ContentsIndex to Financial Statements

ALABAMA POWER COMPANY
CONDENSED STATEMENTS OF INCOME (UNAUDITED)
For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Revenues:
Retail revenues$1,381 $1,379 
Wholesale revenues, non-affiliates141 114 
Wholesale revenues, affiliates19 65 
Other revenues106 91 
Total operating revenues1,647 1,649 
Operating Expenses:
Fuel308 333 
Purchased power, non-affiliates101 67 
Purchased power, affiliates59 26 
Other operations and maintenance424 409 
Depreciation and amortization345 215 
Taxes other than income taxes115 104 
Total operating expenses1,352 1,154 
Operating Income295 495 
Other Income and (Expense):
Allowance for equity funds used during construction21 16 
Interest expense, net of amounts capitalized(103)(89)
Other income (expense), net40 36 
Total other income and (expense)(42)(37)
Earnings Before Income Taxes253 458 
Income taxes (benefit)(2)107 
Net Income255 351 
Dividends on Preferred Stock 
Net Income After Dividends on Preferred Stock$255 $347 

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
For the Three Months Ended March 31,
 20232022
 (in millions)
Net Income$255 $351 
Other comprehensive income:
Qualifying hedges:
Changes in fair value, net of tax of $— and $(1), respectively (1)
Reclassification adjustment for amounts included in net income,
   net of tax of $— and $—, respectively
 
Total other comprehensive income — 
Comprehensive Income$255 $351 
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.
16

Table of ContentsIndex to Financial Statements
ALABAMA POWER COMPANY
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Activities:
Net income$255 $351 
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total398 250 
Deferred income taxes(75)35 
Pension, postretirement, and other employee benefits(51)(48)
Settlement of asset retirement obligations(52)(38)
Retail fuel cost under recovery – long-term100 (46)
Other, net(3)(27)
Changes in certain current assets and liabilities —
-Receivables90 (4)
-Fossil fuel stock(78)23 
-Prepayments(89)(85)
-Other current assets(37)(10)
-Accounts payable(400)(237)
-Accrued taxes109 102 
-Accrued compensation(102)(99)
-Other current liabilities(35)(13)
Net cash provided from operating activities30 154 
Investing Activities:
Property additions(389)(343)
Nuclear decommissioning trust fund purchases(87)(72)
Nuclear decommissioning trust fund sales87 72 
Cost of removal, net of salvage(41)(60)
Change in construction payables(70)39 
Other investing activities(9)(1)
Net cash used for investing activities(509)(365)
Financing Activities:
Increase in notes payable, net170 — 
Proceeds —
Senior notes 700 
Other long-term debt16 — 
Redemptions — Senior notes (550)
Capital contributions from parent company325 625 
Payment of common stock dividends(285)(254)
Other financing activities(7)(17)
Net cash provided from financing activities219 504 
Net Change in Cash, Cash Equivalents, and Restricted Cash(260)293 
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period687 1,060 
Cash, Cash Equivalents, and Restricted Cash at End of Period$427 $1,353 
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $7 and $4 capitalized for 2023 and 2022, respectively)$138 $110 
Noncash transactions —
Accrued property additions at end of period111 188 
Right-of-use assets obtained under operating leases13 
Right-of-use assets obtained under finance leases1 — 
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.
17

Table of ContentsIndex to Financial Statements
ALABAMA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
AssetsAt March 31, 2023At December 31, 2022
(in millions)
Current Assets:
Cash and cash equivalents$427 $687 
Receivables —
Customer accounts446 431 
Unbilled revenues129 174 
Affiliated98 101 
Other accounts and notes86 153 
Accumulated provision for uncollectible accounts(15)(14)
Fossil fuel stock307 229 
Materials and supplies586 557 
Prepaid expenses136 65 
Other regulatory assets485 474 
Other current assets48 67 
Total current assets2,733 2,924 
Property, Plant, and Equipment:
In service33,803 33,472 
Less: Accumulated provision for depreciation10,664 10,470 
Plant in service, net of depreciation23,139 23,002 
Other utility plant, net571 599 
Nuclear fuel, at amortized cost238 239 
Construction work in progress1,510 1,526 
Total property, plant, and equipment25,458 25,366 
Other Property and Investments:
Nuclear decommissioning trusts, at fair value1,170 1,127 
Equity investments in unconsolidated subsidiaries55 57 
Miscellaneous property and investments125 124 
Total other property and investments1,350 1,308 
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization81 71 
Deferred charges related to income taxes253 250 
Prepaid pension and other postretirement benefit costs689 657 
Regulatory assets – asset retirement obligations1,827 1,845 
Other regulatory assets, deferred2,034 2,107 
Other deferred charges and assets454 442 
Total deferred charges and other assets5,338 5,372 
Total Assets$34,879 $34,970 
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

18

Table of ContentsIndex to Financial Statements
ALABAMA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's EquityAt March 31, 2023At December 31, 2022
 (in millions)
Current Liabilities:
Securities due within one year$323 $301 
Notes payable170 — 
Accounts payable —
Affiliated242 443 
Other380 641 
Customer deposits105 106 
Accrued taxes148 57 
Accrued interest78 120 
Accrued compensation133 229 
Asset retirement obligations334 330 
Other regulatory liabilities74 96 
Other current liabilities132 91 
Total current liabilities2,119 2,414 
Long-term Debt10,322 10,329 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes3,997 3,981 
Deferred credits related to income taxes1,836 1,925 
Accumulated deferred ITCs79 81 
Employee benefit obligations149 145 
Operating lease obligations75 67 
Asset retirement obligations, deferred3,940 3,957 
Other regulatory liabilities, deferred300 315 
Other deferred credits and liabilities75 69 
Total deferred credits and other liabilities10,451 10,540 
Total Liabilities22,892 23,283 
Common Stockholder's Equity (See accompanying statements)
11,987 11,687 
Total Liabilities and Stockholder's Equity$34,879 $34,970 
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.
19

Table of ContentsIndex to Financial Statements
ALABAMA POWER COMPANY
CONDENSED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)
Number of
Common
Shares
Issued
Common
Stock
Paid-In
Capital
Retained
Earnings
Accumulated
Other
Comprehensive
Income (Loss)
Total
(in millions)
Balance at December 31, 202131 $1,222 $6,056 $3,448 $(13)$10,713 
Net income after dividends on
   preferred stock
— — — 347 — 347 
Capital contributions from parent company— — 626 — — 626 
Cash dividends on common stock— — — (254)— (254)
Balance at March 31, 202231 $1,222 $6,682 $3,541 $(13)$11,432 
Balance at December 31, 202231 $1,222 $6,710 $3,764 $(9)$11,687 
Net income after dividends on
   preferred stock
   255  255 
Capital contributions from parent company  330   330 
Cash dividends on common stock   (285) (285)
Balance at March 31, 202331 $1,222 $7,040 $3,734 $(9)$11,987 
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

20

Table of ContentsIndex to Financial Statements

GEORGIA POWER COMPANY
CONDENSED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Revenues:
Retail revenues$1,981 $2,017 
Wholesale revenues31 66 
Other revenues164 125 
Total operating revenues2,176 2,208 
Operating Expenses:
Fuel402 419 
Purchased power, non-affiliates123 150 
Purchased power, affiliates206 206 
Other operations and maintenance496 517 
Depreciation and amortization408 351 
Taxes other than income taxes131 125 
Total operating expenses1,766 1,768 
Operating Income410 440 
Other Income and (Expense):
Allowance for equity funds used during construction40 32 
Interest expense, net of amounts capitalized(146)(107)
Other income (expense), net45 50 
Total other income and (expense)(61)(25)
Earnings Before Income Taxes349 415 
Income taxes53 30 
Net Income$296 $385 
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Net Income$296 $385 
Other comprehensive income:
Qualifying hedges:
Changes in fair value, net of tax of $— and $3, respectively(1)
Reclassification adjustment for amounts included in net income,
   net of tax of $— and $1, respectively
1 
Total other comprehensive income 10 
Comprehensive Income$296 $395 
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.
21

Table of ContentsIndex to Financial Statements
GEORGIA POWER COMPANY
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Activities:
Net income$296 $385 
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total455 397 
Deferred income taxes57 (6)
Allowance for equity funds used during construction(40)(32)
Pension, postretirement, and other employee benefits(64)(63)
Settlement of asset retirement obligations(54)(41)
Storm damage accruals8 53 
Retail fuel cost under recovery – long-term354 (84)
Other, net(40)(54)
Changes in certain current assets and liabilities —
-Receivables(136)— 
-Fossil fuel stock(107)18 
-Materials and supplies(46)(11)
-Other current assets6 (20)
-Accounts payable(293)39 
-Accrued taxes(266)(78)
-Accrued compensation(85)(79)
-Customer refunds(103)
-Accrued interest(23)(43)
-Other current liabilities28 (22)
Net cash provided from (used for) operating activities(53)361 
Investing Activities:
Property additions(1,042)(749)
Nuclear decommissioning trust fund purchases(169)(221)
Nuclear decommissioning trust fund sales164 217 
Cost of removal, net of salvage(64)(140)
Change in construction payables, net of joint owner portion(27)14 
Proceeds from dispositions56 56 
Other investing activities(35)14 
Net cash used for investing activities(1,117)(809)
Financing Activities:
Increase in notes payable, net465 410 
Proceeds —
Revenue bonds229 — 
Short-term borrowings100 450 
Redemptions and repurchases —
Senior notes (400)
FFB loan(21)(24)
Short-term borrowings(200)— 
Capital contributions from parent company750 445 
Payment of common stock dividends(464)(423)
Other financing activities(9)(17)
Net cash provided from financing activities850 441 
Net Change in Cash, Cash Equivalents, and Restricted Cash(320)(7)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period480 33 
Cash, Cash Equivalents, and Restricted Cash at End of Period$160 $26 
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $21 and $16 capitalized for 2023 and 2022, respectively)$159 $139 
Noncash transactions —
Accrued property additions at end of period548 459 
Right-of-use assets obtained under operating leases3 
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.
22

Table of ContentsIndex to Financial Statements
GEORGIA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
AssetsAt March 31, 2023At December 31, 2022
 (in millions)
Current Assets:
Cash and cash equivalents$ $364 
Receivables —
Customer accounts, net597 735 
Unbilled revenues197 309 
Under recovered fuel clause revenues447 — 
Joint owner accounts100 128 
Affiliated59 53 
Other accounts and notes45 62 
Fossil fuel stock399 291 
Materials and supplies774 729 
Regulatory assets – asset retirement obligations166 158 
Other regulatory assets377 324 
Other current assets264 246 
Total current assets3,425 3,399 
Property, Plant, and Equipment:
In service42,465 41,879 
Less: Accumulated provision for depreciation13,383 13,115 
Plant in service, net of depreciation29,082 28,764 
Nuclear fuel, at amortized cost611 604 
Construction work in progress8,639 8,103 
Total property, plant, and equipment38,332 37,471 
Other Property and Investments:
Nuclear decommissioning trusts, at fair value1,075 1,018 
Equity investments in unconsolidated subsidiaries50 51 
Miscellaneous property and investments116 107 
Total other property and investments1,241 1,176 
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization974 1,007 
Deferred charges related to income taxes592 583 
Prepaid pension costs771 738 
Deferred under recovered fuel clause revenues1,702 2,056 
Regulatory assets – asset retirement obligations, deferred3,635 3,671 
Other regulatory assets, deferred2,576 2,522 
Other deferred charges and assets489 540 
Total deferred charges and other assets10,739 11,117 
Total Assets$53,737 $53,163 
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

23

Table of ContentsIndex to Financial Statements
GEORGIA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's EquityAt March 31, 2023At December 31, 2022
 (in millions)
Current Liabilities:
Securities due within one year$901 $901 
Notes payable1,965 1,600 
Accounts payable —
Affiliated606 928 
Other1,099 1,076 
Customer deposits251 252 
Accrued taxes222 508 
Accrued interest133 157 
Accrued compensation133 254 
Operating lease obligations154 151 
Asset retirement obligations308 295 
Other regulatory liabilities47 170 
Other current liabilities426 286 
Total current liabilities6,245 6,578 
Long-term Debt14,219 14,009 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes3,818 3,707 
Deferred credits related to income taxes2,220 2,244 
Accumulated deferred ITCs316 319 
Employee benefit obligations310 318 
Operating lease obligations, deferred840 851 
Asset retirement obligations, deferred5,820 5,739 
Other deferred credits and liabilities506 540 
Total deferred credits and other liabilities13,830 13,718 
Total Liabilities34,294 34,305 
Common Stockholder's Equity (See accompanying statements)
19,443 18,858 
Total Liabilities and Stockholder's Equity$53,737 $53,163 
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.
24

Table of ContentsIndex to Financial Statements
GEORGIA POWER COMPANY
CONDENSED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)
 Number of
Common
Shares
Issued
Common
Stock
Paid-In
Capital
Retained
Earnings
Accumulated
Other
Comprehensive
Income (Loss)
Total
 (in millions)
Balance at December 31, 2021$398 $14,153 $2,724 $(41)$17,234 
Net income— — — 385 — 385 
Capital contributions from parent company— — 443 — — 443 
Other comprehensive income— — — — 10 10 
Cash dividends on common stock— — — (423)— (423)
Balance at March 31, 2022$398 $14,596 $2,686 $(31)$17,649 
Balance at December 31, 20229 $398 $15,626 $2,846 $(12)$18,858 
Net income   296  296 
Capital contributions from parent company  752   752 
Cash dividends on common stock   (464) (464)
Other   1  1 
Balance at March 31, 20239 $398 $16,378 $2,679 $(12)$19,443 
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

25

Table of ContentsIndex to Financial Statements

MISSISSIPPI POWER COMPANY
CONDENSED STATEMENTS OF INCOME AND ANALYSIS OFCOMPREHENSIVE INCOME (UNAUDITED)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS
For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Revenues:
Retail revenues$236 $217 
Wholesale revenues, non-affiliates68 68 
Wholesale revenues, affiliates75 42 
Other revenues11 
Total operating revenues390 335 
Operating Expenses:
Fuel and purchased power151 132 
Other operations and maintenance82 76 
Depreciation and amortization47 45 
Taxes other than income taxes32 29 
Total operating expenses312 282 
Operating Income78 53 
Other Income and (Expense):
Interest expense, net of amounts capitalized(16)(13)
Other income (expense), net9 10 
Total other income and (expense)(7)(3)
Earnings Before Income Taxes71 50 
Income taxes13 
Net Income and Comprehensive Income$58 $42 
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.












26


Table of ContentsIndex to Financial Statements
THIRD QUARTER 2017 vs. THIRD QUARTER 2016MISSISSIPPI POWER COMPANY
ANDCONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
YEAR-TO-DATE 2017 vs. YEAR-TO-DATE 2016
For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Activities:
Net income$58 $42 
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total58 55 
Settlement of asset retirement obligations(3)(5)
Other, net(5)17 
Changes in certain current assets and liabilities —
-Receivables73 (7)
-Retail fuel cost under recovery(23)(11)
-Other current assets(1)(11)
-Accounts payable(74)(9)
-Accrued taxes(62)(63)
-Accrued compensation(17)(18)
-Other current liabilities(7)(6)
Net cash used for operating activities(3)(16)
Investing Activities:
Property additions(94)(45)
Construction payables(9)(8)
Payments pursuant to LTSAs(8)(8)
Other investing activities(6)(7)
Net cash used for investing activities(117)(68)
Financing Activities:
Increase in notes payable, net126 25 
Capital contributions from parent company 50 
Payment of common stock dividends(46)(43)
Other financing activities(1)— 
Net cash provided from financing activities79 32 
Net Change in Cash, Cash Equivalents, and Restricted Cash(41)(52)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period59 61 
Cash, Cash Equivalents, and Restricted Cash at End of Period$18 $
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest$25 $22 
Noncash transactions —
Accrued property additions at end of period13 17 
Right-of-use assets obtained under operating leases1 — 

The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

27
OVERVIEW

Table of ContentsIndex to Financial Statements
MISSISSIPPI POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
AssetsAt March 31, 2023At December 31, 2022
 (in millions)
Current Assets:
Cash and cash equivalents$18 $59 
Receivables —
Customer accounts, net69 47 
Unbilled revenues37 47 
Affiliated26 82 
Other accounts and notes29 35 
Fossil fuel stock51 44 
Materials and supplies80 80 
Other regulatory assets80 72 
Other current assets13 38 
Total current assets403 504 
Property, Plant, and Equipment:
In service5,319 5,254 
Less: Accumulated provision for depreciation1,723 1,689 
Plant in service, net of depreciation3,596 3,565 
Construction work in progress225 208 
Total property, plant, and equipment3,821 3,773 
Other Property and Investments165 167 
Deferred Charges and Other Assets:
Deferred charges related to income taxes29 30 
Prepaid pension costs114 109 
Regulatory assets – asset retirement obligations239 239 
Other regulatory assets, deferred253 249 
Accumulated deferred income taxes103 107 
Other deferred charges and assets89 94 
Total deferred charges and other assets827 828 
Total Assets$5,216 $5,272 
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

28

Table of ContentsIndex to Financial Statements
MISSISSIPPI POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's EquityAt March 31, 2023At December 31, 2022
 (in millions)
Current Liabilities:
Securities due within one year$1 $
Notes payable126 — 
Accounts payable —
Affiliated69 121 
Other75 106 
Accrued taxes62 124 
Accrued compensation20 37 
Asset retirement obligations35 37 
Other regulatory liabilities25 43 
Other current liabilities81 85 
Total current liabilities494 554 
Long-term Debt1,544 1,544 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes470 466 
Deferred credits related to income taxes247 253 
Employee benefit obligations69 69 
Asset retirement obligations, deferred143 142 
Other cost of removal obligations196 196 
Other regulatory liabilities, deferred84 96 
Other deferred credits and liabilities26 21 
Total deferred credits and other liabilities1,235 1,243 
Total Liabilities3,273 3,341 
Common Stockholder's Equity (See accompanying statements)
1,943 1,931 
Total Liabilities and Stockholder's Equity$5,216 $5,272 
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.
29

Table of ContentsIndex to Financial Statements
MISSISSIPPI POWER COMPANY
CONDENSED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)
 Number of
Common
Shares
Issued
Common
Stock
Paid-In
Capital
Retained
Earnings (Accumulated Deficit)
Total
 (in millions)
Balance at December 31, 2021$38 $4,582 $(2,753)$1,867 
Net income— — — 42 42 
Capital contributions from parent company— — 51 — 51 
Cash dividends on common stock— — — (43)(43)
Balance at March 31, 2022$38 $4,633 $(2,754)$1,917 
Balance at December 31, 20221 $38 $4,652 $(2,759)$1,931 
Net income   58 58 
Cash dividends on common stock   (46)(46)
Balance at March 31, 20231 $38 $4,652 $(2,747)$1,943 
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

30

Table of ContentsIndex to Financial Statements

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Revenues:
Wholesale revenues, non-affiliates$362 $426 
Wholesale revenues, affiliates135 105 
Other revenues11 
Total operating revenues508 539 
Operating Expenses:
Fuel191 232 
Purchased power26 21 
Other operations and maintenance107 105 
Depreciation and amortization128 120 
Taxes other than income taxes13 13 
Gain on dispositions, net(20)(2)
Total operating expenses445 489 
Operating Income63 50 
Other Income and (Expense):
Interest expense, net of amounts capitalized(33)(37)
Other income (expense), net2 
Total other income and (expense)(31)(35)
Earnings Before Income Taxes32 15 
Income taxes (benefit)(7)(12)
Net Income39 27 
Net loss attributable to noncontrolling interests(63)(45)
Net Income Attributable to Southern Power$102 $72 
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Net Income$39 $27 
Other comprehensive income (loss):
Qualifying hedges:
Changes in fair value, net of tax of $(3) and $(6), respectively(8)(17)
Reclassification adjustment for amounts included in net income,
   net of tax of $— and $7, respectively
1 22 
Total other comprehensive income (loss)(7)
Comprehensive Income32 32 
Comprehensive loss attributable to noncontrolling interests(63)(45)
Comprehensive Income Attributable to Southern Power$95 $77 
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.
31

Table of ContentsIndex to Financial Statements
SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Activities:
Net income$39 $27 
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total133 126 
Deferred income taxes3 12 
Amortization of investment tax credits(15)(15)
Gain on dispositions, net(20)(2)
Other, net(14)(3)
Changes in certain current assets and liabilities —
-Receivables120 11 
-Prepaid income taxes15 (8)
-Other current assets(13)— 
-Accounts payable(92)(21)
-Accrued compensation(13)(13)
-Other current liabilities(8)
Net cash provided from operating activities135 117 
Investing Activities:
Property additions(11)(19)
Proceeds from dispositions46 29 
Change in construction payables(15)(31)
Payments pursuant to LTSAs(16)(15)
Other investing activities (1)
Net cash provided from (used for) investing activities4 (37)
Financing Activities:
Decrease in notes payable, net(59)(3)
Capital contributions from noncontrolling interests21 73 
Distributions to noncontrolling interests(48)(97)
Payment of common stock dividends(63)(49)
Other financing activities3 — 
Net cash used for financing activities(146)(76)
Net Change in Cash, Cash Equivalents, and Restricted Cash(7)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period133 135 
Cash, Cash Equivalents, and Restricted Cash at End of Period$126 $139 
Supplemental Cash Flow Information:
Cash paid (received) during the period for —
Interest$30 $29 
Income taxes, net(9)(8)
Noncash transactions —
Accrued property additions at end of period12 46 
Reassessment of right-of-use assets under operating leases 40 
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.
32

Table of ContentsIndex to Financial Statements
SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
AssetsAt March 31, 2023At December 31, 2022
 (in millions)
Current Assets:
Cash and cash equivalents$123 $131 
Receivables —
Customer accounts, net133 226 
Affiliated39 51 
Other71 70 
Materials and supplies85 88 
Prepaid income taxes291 
Other current assets59 50 
Total current assets801 621 
Property, Plant, and Equipment:
In service14,635 14,658 
Less: Accumulated provision for depreciation3,760 3,661 
Plant in service, net of depreciation10,875 10,997 
Construction work in progress43 41 
Total property, plant, and equipment10,918 11,038 
Other Property and Investments:
Intangible assets, net of amortization of $134 and $129, respectively258 263 
Equity investments in unconsolidated subsidiaries 49 
Net investment in sales-type leases152 154 
Total other property and investments410 466 
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization487 489 
Prepaid LTSAs208 193 
Other deferred charges and assets310 274 
Total deferred charges and other assets1,005 956 
Total Assets$13,134 $13,081 
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.
33

Table of ContentsIndex to Financial Statements
SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholders' EquityAt March 31, 2023At December 31, 2022
 (in millions)
Current Liabilities:
Securities due within one year$291 $290 
Notes payable165 225 
Accounts payable —
Affiliated71 139 
Other31 67 
Accrued taxes22 24 
Accrued interest27 28 
Other current liabilities90 111 
Total current liabilities697 884 
Long-term Debt2,700 2,689 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes581 279 
Accumulated deferred ITCs1,541 1,556 
Operating lease obligations510 514 
Other deferred credits and liabilities247 243 
Total deferred credits and other liabilities2,879 2,592 
Total Liabilities6,276 6,165 
Total Stockholders' Equity (See accompanying statements)
6,858 6,916 
Total Liabilities and Stockholders' Equity$13,134 $13,081 
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.
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SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED)
Paid-In
Capital
Retained
Earnings
Accumulated
Other
Comprehensive
Income (Loss)
Total Common
Stockholders' Equity
Noncontrolling InterestsTotal
(in millions)
Balance at December 31, 2021$638 $1,585 $(27)$2,196 $4,402 $6,598 
Net income (loss)— 72 — 72 (45)27 
Other comprehensive income— — — 
Cash dividends on common stock— (49)— (49)— (49)
Capital contributions from
   noncontrolling interests
— — — — 73 73 
Distributions to noncontrolling interests— — — — (98)(98)
Balance at March 31, 2022$638 $1,608 $(22)$2,224 $4,332 $6,556 
Balance at December 31, 2022$1,069 $1,741 $(18)$2,792 $4,124 $6,916 
Net income (loss) 102  102 (63)39 
Other comprehensive income (loss)  (7)(7) (7)
Cash dividends on common stock (63) (63) (63)
Capital contributions from
   noncontrolling interests
    21 21 
Distributions to noncontrolling interests    (48)(48)
Balance at March 31, 2023$1,069 $1,780 $(25)$2,824 $4,034 $6,858 
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.
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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Revenues:
Natural gas revenues (includes revenue taxes of $66 and $71, respectively)$1,875 $2,058 
Total operating revenues1,875 2,058 
Operating Expenses:
Cost of natural gas898 1,095 
Other operations and maintenance305 305 
Depreciation and amortization141 137 
Taxes other than income taxes102 100 
Total operating expenses1,446 1,637 
Operating Income429 421 
Other Income and (Expense):
Earnings from equity method investments45 40 
Interest expense, net of amounts capitalized(76)(61)
Other income (expense), net14 16 
Total other income and (expense)(17)(5)
Earnings Before Income Taxes412 416 
Income taxes103 97 
Net Income$309 $319 
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Net Income$309 $319 
Other comprehensive income (loss):
Qualifying hedges:
Changes in fair value, net of tax of $(10) and $10, respectively(24)26 
Reclassification adjustment for amounts included in net income,
    net of tax of $6 and $(2), respectively
14 (6)
Total other comprehensive income (loss)(10)20 
Comprehensive Income$299 $339 
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.
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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Three Months Ended March 31,
 20232022
 (in millions)
Operating Activities:
Net income$309 $319 
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total141 137 
Deferred income taxes27 
Mark-to-market adjustments13 (38)
Natural gas cost under recovery – long-term 162 
Other, net(15)41 
Changes in certain current assets and liabilities —
-Receivables266 (115)
-Natural gas for sale, net of temporary LIFO liquidation267 450 
-Prepaid income taxes33 34 
-Other current assets90 (1)
-Accounts payable(303)(23)
-Accrued taxes36 54 
-Natural gas cost over recovery117 — 
-Other current liabilities(3)(1)
Net cash provided from operating activities978 1,024 
Investing Activities:
Property additions(299)(247)
Cost of removal, net of salvage(24)(20)
Change in construction payables, net(53)(5)
Other investing activities(3)
Net cash used for investing activities(379)(271)
Financing Activities:
Decrease in notes payable, net(448)(577)
Redemptions — Short-term borrowings(200)(100)
Capital contributions from parent company192 39 
Payment of common stock dividends(146)(130)
Other financing activities9 — 
Net cash used for financing activities(593)(768)
Net Change in Cash, Cash Equivalents, and Restricted Cash6 (15)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period83 48 
Cash, Cash Equivalents, and Restricted Cash at End of Period$89 $33 
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $4 and $2 capitalized for 2023 and 2022, respectively)$76 $55 
Noncash transactions — Accrued property additions at end of period124 107 
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.
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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
AssetsAt March 31, 2023At December 31, 2022
(in millions)
Current Assets:  
Cash and cash equivalents$88 $81 
Receivables —  
Customer accounts586 616 
Unbilled revenues218 453 
Other accounts and notes73 76 
Accumulated provision for uncollectible accounts(58)(50)
Natural gas for sale216 438 
Prepaid expenses74 93 
Natural gas cost under recovery 108 
Other regulatory assets126 119 
Other current assets118 104 
Total current assets1,441 2,038 
Property, Plant, and Equipment:  
In service19,918 19,723 
Less: Accumulated depreciation5,350 5,276 
Plant in service, net of depreciation14,568 14,447 
Construction work in progress996 909 
Total property, plant, and equipment15,564 15,356 
Other Property and Investments:
Goodwill5,015 5,015 
Equity investments in unconsolidated subsidiaries1,282 1,276 
Other intangible assets, net of amortization of $159 and $156, respectively23 26 
Miscellaneous property and investments29 28 
Total other property and investments6,349 6,345 
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization55 57 
Prepaid pension costs190 183 
Other regulatory assets, deferred478 497 
Other deferred charges and assets145 145 
Total deferred charges and other assets868 882 
Total Assets$24,222 $24,621 
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholder's EquityAt March 31, 2023At December 31, 2022
(in millions)
Current Liabilities:
Securities due within one year$401 $400 
Notes payable120 768 
Accounts payable —
Affiliated91 104 
Other361 701 
Customer deposits99 125 
Accrued taxes113 77 
Accrued interest69 67 
Accrued compensation68 105 
Temporary LIFO liquidation45 — 
Natural gas cost over recovery117 — 
Other regulatory liabilities104 36 
Other current liabilities208 187 
Total current liabilities1,796 2,570 
Long-term Debt7,055 7,042 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes1,583 1,560 
Deferred credits related to income taxes781 788 
Employee benefit obligations112 120 
Operating lease obligations50 51 
Other cost of removal obligations1,725 1,707 
Accrued environmental remediation200 207 
Other deferred credits and liabilities167 179 
Total deferred credits and other liabilities4,618 4,612 
Total Liabilities13,469 14,224 
Common Stockholder's Equity (See accompanying statements)
10,753 10,397 
Total Liabilities and Stockholder's Equity$24,222 $24,621 
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.


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Table of ContentsIndex to Financial Statements
SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY (UNAUDITED)
 Paid-In
Capital
Retained
Earnings
(Accumulated Deficit)
Accumulated
Other
Comprehensive
Income (Loss)
Total
 (in millions)
Balance at December 31, 2021$10,024 $(132)$24 $9,916 
Net income— 319 — 319 
Capital contributions from parent company50 — — 50 
Other comprehensive income— — 20 20 
Cash dividends on common stock— (130)— (130)
Balance at March 31, 2022$10,074 $57 $44 $10,175 
Balance at December 31, 2022$10,445 $(79)$31 $10,397 
Net income 309  309 
Capital contributions from parent company203   203 
Other comprehensive income (loss)  (10)(10)
Cash dividends on common stock (146) (146)
Other1 (1)  
Balance at March 31, 2023$10,649 $83 $21 $10,753 
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

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Table of ContentsIndex to Financial Statements
NOTES TO THE CONDENSED FINANCIAL STATEMENTS
FOR
THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
ALABAMA POWER COMPANY
GEORGIA POWER COMPANY
MISSISSIPPI POWER COMPANY
SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
(UNAUDITED)


INDEX TO THE NOTES TO THE CONDENSED FINANCIAL STATEMENTS
NotePage
A
B
C
D
E
F
G
H
I
J
K



INDEX TO APPLICABLE NOTES TO FINANCIAL STATEMENTS BY REGISTRANT
The following unaudited notes to the condensed financial statements are a combined presentation; however, information contained herein relating to any individual Registrant is filed by such Registrant on its own behalf and each Registrant makes no representation as to information related to the other Registrants. The list below indicates the Registrants to which each footnote applies.
RegistrantApplicable Notes
Southern CompanyA, B, C, D, E, F, G, H, I, J, K
Alabama PowerA, B, C, D, F, G, H, I, J
Georgia PowerA, B, C, D, F, G, H, I, J
Mississippi PowerA, B, C, D, F, G, H, I, J
Southern PowerA, C, D, E, F, G, H, I, J
Southern Company GasA, B, C, D, E, F, G, H, I, J, K

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS
(UNAUDITED)
(A) INTRODUCTION
The condensed quarterly financial statements of each Registrant included herein have been prepared by such Registrant, without audit, pursuant to the rules and regulations of the SEC. The Condensed Balance Sheets at December 31, 2022 have been derived from the audited financial statements of each Registrant. In the opinion of each Registrant's management, the information regarding such Registrant furnished herein reflects all adjustments, which, except as otherwise disclosed, are of a normal recurring nature, necessary to present fairly the results of operations for the periods ended March 31, 2023 and 2022. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations, although each Registrant believes that the disclosures regarding such Registrant are adequate to make the information presented not misleading. Disclosures which would substantially duplicate the disclosures in the Form 10-K and details which have not changed significantly in amount or composition since the filing of the Form 10-K are generally omitted from this Quarterly Report on Form 10-Q unless specifically required by GAAP. Therefore, these Condensed Financial Statements should be read in conjunction with the financial statements and the notes thereto included in the Form 10-K. Due to the seasonal variations in the demand for energy and other factors, operating results for the periods presented are not necessarily indicative of the operating results to be expected for the full year.
Certain prior year data presented in the financial statements have been reclassified to conform to the current year presentation. These reclassifications had no impact on the overall results of operations, financial position, or cash flows of any Registrant.
Goodwill and Other Intangible Assets
Goodwill at March 31, 2023 and December 31, 2022 was as follows:
Goodwill
(in millions)
Southern Company$5,161 
Southern Company Gas:
Gas distribution operations$4,034 
Gas marketing services981 
Southern Company Gas total$5,015 
Goodwill is not amortized, but is subject to an annual impairment test during the fourth quarter of each year, or more frequently if impairment indicators arise.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Other intangible assets were as follows:
At March 31, 2023At December 31, 2022
Gross Carrying AmountAccumulated AmortizationOther
Intangible Assets, Net
Gross Carrying AmountAccumulated AmortizationOther
Intangible Assets, Net
(in millions)(in millions)
Southern Company
Subject to amortization:
Customer relationships$212 $(164)$48 $212 $(162)$50 
Trade names64 (47)17 64 (44)20 
PPA fair value adjustments390 (134)256 390 (129)261 
Other(5)(5)— 
Total subject to amortization$672 $(350)$322 $671 $(340)$331 
Not subject to amortization:
FCC licenses75 — 75 75 — 75 
Total other intangible assets$747 $(350)$397 $746 $(340)$406 
Southern Power(*)
PPA fair value adjustments$390 $(134)$256 $390 $(129)$261 
Southern Company Gas(*)
Gas marketing services
Customer relationships$156 $(140)$16 $156 $(139)$17 
Trade names26 (19)26 (17)
Total other intangible assets$182 $(159)$23 $182 $(156)$26 
(*) All subject to amortization.
Amortization associated with other intangible assets was as follows:
Three Months Ended
March 31, 2023March 31, 2022
(in millions)
Southern Company(a)
$10 $10 
Southern Power(b)
Southern Company Gas
(a)Includes $5 million recorded as a reduction to operating revenues for both periods presented.
(b)Recorded as a reduction to operating revenues.
Cash, Cash Equivalents, and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed balance sheets that total to the amount shown in the condensed statements of cash flows for the applicable Registrants:
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern CompanyGeorgia PowerSouthern PowerSouthern
Company Gas
(in millions)
At March 31, 2023
Cash and cash equivalents$1,053 $— $123 $88 
Restricted cash(a):
Other current assets117 115 — 
Other deferred charges and assets47 45 — 
Total cash, cash equivalents, and restricted cash(b)
$1,217 $160 $126 $89 
At December 31, 2022
Cash and cash equivalents$1,917 $364 $131 $81 
Restricted cash(a):
Other current assets62 60 — 
Other deferred charges and assets58 56 — 
Total cash, cash equivalents, and restricted cash(b)
$2,037 $480 $133 $83 
(a)For Georgia Power, reflects $116 million at both March 31, 2023 and December 31, 2022 related to proceeds from the issuance of solid waste disposal facility revenue bonds in 2022 and $44 million at March 31, 2023 related to funds from a Georgia Housing and Finance Authority (GHFA) rental assistance program used to offset qualifying customers' past due balances, which expired on March 31, 2023 and will be returned to the GHFA. For Southern Power, reflects $3 million at both March 31, 2023 and December 31, 2022 held to fund estimated construction completion costs at the Deuel Harvest wind facility. For Southern Company Gas, reflects collateral for workers' compensation, life insurance, and long-term disability insurance.
(b)Total may not add due to rounding.
Natural Gas for Sale
With the exception of Nicor Gas, Southern Company Gas records natural gas inventories on a WACOG basis. For any declines in market prices below the WACOG considered to be other than temporary, an adjustment is recorded to reduce the value of natural gas inventories to market value. Nicor Gas' natural gas inventory is carried at cost on a LIFO basis. Inventory decrements occurring during the year that are restored prior to year-end are charged to cost of natural gas at the estimated annual replacement cost. Inventory decrements that are not restored prior to year-end are charged to cost of natural gas at the actual LIFO cost of the inventory layers liquidated.
Southern Company Gas recorded no material adjustments to natural gas inventories for either period presented. Nicor Gas' inventory decrement at March 31, 2023 is a holding company that owns allexpected to be restored prior to year-end.
Storm Damage Reserves
See Note 1 to the financial statements in Item 8 of the common stockForm 10-K under "Storm Damage and Reliability Reserves" for additional information.
Storm damage reserve activity for the traditional electric operating companies during the three months ended March 31, 2023 was as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi
Power
 (in millions)
Balance at December 31, 2022$216 $97 $83 $36 
Accrual13 
Weather-related damages(43)(12)(31)— 
Balance at March 31, 2023$186 $88 $60 $38 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Asset Retirement Obligations
See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
Following initial criticality on March 6, 2023, Georgia Power recorded AROs of approximately $90 million related to Plant Vogtle Unit 3. See Note (B) under "Georgia Power – Nuclear Construction" for additional information on construction and start-up of Plant Vogtle Units 3 and 4.
(B) REGULATORY MATTERS
See Note 2 to the financial statements in Item 8 of the Form 10-K for additional information relating to regulatory matters.
The recovery balances for certain retail regulatory clauses of the traditional electric operating companies and the parent entities of Southern Power and Southern Company Gas at March 31, 2023 and owns other direct and indirect subsidiaries. Discussion of the results of operations is focused on the Southern Company system's primary businesses of electricity sales by the traditional electric operating companies and SouthernDecember 31, 2022 were as follows:
Regulatory ClauseBalance Sheet Line ItemMarch 31,
2023
December 31, 2022
(in millions)
Alabama Power
Rate CNP ComplianceOther regulatory assets, current$23 $47 
Other regulatory assets, deferred18 — 
Rate CNP PPAOther regulatory assets, current17 18 
Other regulatory assets, deferred100 102 
Retail Energy Cost RecoveryOther regulatory assets, current101 102 
Other regulatory assets, deferred420 520 
Georgia Power
Fuel Cost Recovery(*)
Receivables – under recovered fuel clause revenues$447 $— 
Deferred under recovered fuel clause revenues1,702 2,056 
Mississippi Power
Fuel Cost RecoveryReceivables – customer accounts, net$25 $
Ad Valorem TaxOther regulatory assets, current9 12 
Other regulatory assets, deferred19 19 
Southern Company Gas
Natural Gas Cost RecoveryNatural gas cost under recovery$ $108 
Natural gas cost over recovery117 — 
(*)See "Georgia Power and the distribution of natural gas by Southern Company Gas. The four traditional electric operating companies are vertically integrated utilities providing electric service in four Southeastern states. Southern Power constructs, acquires, owns, and manages power generation assets, including renewable energy projects, and sells electricity at market-based rates in the wholesale market. Southern Company Gas distributes natural gas through natural gas distribution utilities in seven states and is involved in several other complementary businesses including gas marketing services, wholesale gas services, and gas midstream operations. Southern Company's other business activities include providing energy technologies and services to electric utilities and large industrial, commercial, institutional, and municipal customers. Customer solutions include distributed generation systems, utility infrastructure solutions, and energy efficiency products and services. Other business activities also include investments in telecommunications, leveraged lease projects, and gas storage facilities. For additional information, see BUSINESS "The Southern Company System – Traditional Electric Operating Companies," " – Southern Power," " – Southern Company Gas," and " – Other Businesses" in Item 1 of the Form 10-K. See FUTURE EARNINGS POTENTIAL herein for information regarding agreements entered into by a wholly-owned subsidiary of Southern Company Gas to sell two of its natural gas distribution utilities.
Southern Company continues to focus on several key performance indicators. These indicators include customer satisfaction, plant availability, electric and natural gas system reliability, execution of major construction projects, and earnings per share.
Construction Program
See RESULTS OF OPERATIONS – "Estimated Loss on Kemper IGCC," FUTURE EARNINGS POTENTIAL – "Construction Program," and Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerNuclear Construction" and "Integrated Coal Gasification Combined Cycle"Fuel Cost Recovery" herein for additional information regardinginformation.
Alabama Power
Certificates of Convenience and Necessity
In 2020, the construction program. For information about SouthernAlabama PSC approved a certificate of convenience and necessity authorizing Alabama Power's acquisitions and construction of renewable energy facilities, see Note (I) toPlant Barry Unit 8 and the Condensed Financial Statements under "Southern Power" herein.
Kemper IGCC
On June 21, 2017, the Mississippi PSC stated its intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement underrecovery of estimated actual in-service costs of $652 million. At March 31, 2023, project expenditures associated with Plant Barry Unit 8 totaled approximately $541 million, of which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC$536 million and $5 million was included in CWIP and property, plant, and address all issues associated with the Kemper IGCC (Kemper Settlement Order).equipment in service, respectively. The Kemper Settlement Order established a new docket for the purposesunit is expected to be placed in service in November 2023. The ultimate outcome of pursuing a global settlement of costs of the Kemper IGCC (Kemper IGCC Settlement Docket). The Mississippi PSC requested any such proposed settlement agreement reflect: (i)this matter cannot be determined at a minimum, no rate increase to Mississippi Power customers (with a rate reduction focused on residential customers encouraged); (ii) removal of all cost risk to customers associated with the Kemper IGCC gasifier and related assets; and (iii) modification or amendment of the CPCN for the Kemper IGCC to allow only for ownership and operation of a natural gas facility.
On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a process to suspend operations and start-up activities on the gasifier portion of the Kemper IGCC, given the uncertainty as to the future

this time.
16
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SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

Rate CNP New Plant
ofOn March 24, 2023, Alabama Power filed Rate CNP New Plant with the gasifier portion of the Kemper IGCC. Mississippi Power expectsAlabama PSC to continue to operate the combined cycle portion of the Kemper IGCC as it has done since August 2014. At the time of project suspension, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subject to the construction cost cap, and was net of the $137 million in additional grants from the DOE received on April 8, 2016 (Additional DOE Grants).
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimatedrecover costs associated with the gasification portionsacquisition of the plant and lignite mine. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.
Total pre-tax charges to income for the estimated probable losses on the Kemper IGCC were $34 million ($21 million after tax) for the third quarter 2017 and $3.2 billion ($2.2 billion after tax) for the nine months ended September 30, 2017. In the aggregate, since the Kemper IGCC project started, Mississippi Power has incurred charges of $6.0 billion ($4.0 billion after tax) through September 30, 2017.
Mississippi Power reached and filed a settlement agreement on August 21, 2017 with certain parties (not including the Mississippi Public Utilities Staff (MPUS)), which it believes met the conditions of the Kemper Settlement Order.Central Alabama Generating Station. The settlement agreement provides forfiling reflected an annual revenue requirementincrease in retail revenues of $126$78 million for Kemper IGCC-related costs, which would (i) be effective January 1, 2018, (ii) represent no rate increase for customers, and (iii) include no recovery for thewith June 2023 billings. Through May 2023, Alabama Power expects to recover substantially all costs associated with the gasifier portion of the Kemper IGCC in 2018 or at any future date. In addition, under the settlement agreement, the CPCN for the Kemper IGCC would be modified to limit the Kemper County energy facility to natural gas combined cycle operation and Mississippi Power would, in the future, fileCentral Alabama Generating Station through Rate RSE, offset by revenues from a reserve margin plan with the Mississippi PSC. The Mississippi PSC issued a scheduling order, as amended on October 5, 2017, noting Mississippi Power and the MPUS had failed to reach a joint stipulation and ordering a full hearing. The Mississippi PSC is expected to rule on an order resolving this matter in January 2018.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which $0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimate for the combined cycle portion of the facility, as well as the 15% that was previously contracted to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistent with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.
For additional information on the Kemper IGCC, including information on the project economic viability analysis, pending lawsuits, and an ongoing SEC investigation, seepower sales agreement. See Note 315 to the financial statements of Southern Company under "Integrated Coal Gasification Combined Cycle""Alabama Power" in Item 8 of the Form 10-K for additional information.
Renewable Generation Certificate
Through the issuance of a Renewable Generation Certificate (RGC), Alabama Power is authorized by the Alabama PSC to procure up to 500 MWs of renewable capacity and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle"energy by September 16, 2027 and "Other Matters"to market the related energy and Note (B)environmental attributes to customers and other third parties. On April 4, 2023, the Condensed Financial StatementsAlabama PSC approved two new solar PPAs totaling 160 MWs. Alabama Power has procured solar capacity totaling approximately 490 MWs under "Integrated Coal Gasification Combined Cycle" herein.the RGC.

17

Table of ContentsGeorgia Power
SOUTHERN COMPANY AND SUBSIDIARY COMPANIESFuel Cost Recovery
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Nuclear Construction
On March 29, 2017, the EPC Contractor for Plant Vogtle Units 3 and 4 filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. To provide for a continuation of work,February 28, 2023, Georgia Power acting for itself and as agent for the Vogtle Owners, entered into an interim assessment agreementfiled a request with the EPC Contractor (Interim Assessment Agreement), which the bankruptcy court approved on March 30, 2017.Georgia PSC to increase fuel rates. On June 9, 2017,April 13, 2023, Georgia Power and the other Vogtle Ownersstaff of the Georgia PSC reached a stipulated agreement that includes the following terms: (i) Georgia Power would update fuel rates from the original request for revised fuel costs and Toshiba entered intoto reflect a settlement agreement regardingthree-year recovery period, starting June 1, 2023, for $2.2 billion of the Toshiba Guarantee (Guarantee Settlement Agreement). Pursuantunder recovered fuel balance and (ii) Georgia Power would be required to file its next fuel case no later than February 28, 2026. On April 24, 2023, Georgia Power filed an updated request reflecting a 54% increase in fuel rates effective June 1, 2023, which is expected to increase annual billings by approximately $1.1 billionand includes recovery of the under recovered fuel balance described above. Changes in fuel rates have no significant effect on Georgia Power's net income but do impact the related operating cash flows. Georgia Power expects the Georgia PSC to make a final decision on this matter on May 16, 2023. The ultimate outcome of this matter cannot be determined at this time.
Integrated Resource Plans
In August 2022, Restore Chattooga Gorge Coalition (RCG) filed a petition in the Superior Court of Fulton County, Georgia against Georgia Power and the Georgia PSC. The petition challenges Georgia Power's plan to expend $115 million to modernize Plant Tugalo, as approved in the 2019 IRP, and seeks judicial review of the Georgia PSC's order in the 2022 IRP proceeding with respect to the Guarantee Settlement Agreement, Toshiba acknowledgeddenial of RCG's challenge to the amount of its obligation under the Toshiba Guarantee is $3.68 billion (Guarantee Obligations), of which Georgia Power's proportionate share is approximately $1.7 billion, and that the Guarantee Obligations exist regardless of whether Plant Vogtle Units 3 and 4 are completed. On October 2, 2017,modernization plan. In November 2022, Georgia Power received the first installment of the Guarantee Obligations of $300 million from Toshiba, of which Georgia Power's proportionate share was $137 million.
Additionally, on June 9, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, and the EPC Contractor entered into a services agreement (Services Agreement), which was amended and restated on July 20, 2017, forGeorgia PSC both filed motions to dismiss the EPC Contractor to transitionRCG petition. The ultimate outcome of this matter cannot be determined at this time.
Nuclear Construction
In 2009, the Georgia PSC certified construction management of Plant Vogtle Units 3 and 4, in which Georgia Power currently holds a 45.7% ownership interest. In 2012, the NRC issued the related combined construction and operating licenses, which allowed full construction of the two AP1000 nuclear units (with electric generating capacity of approximately 1,100 MWs each) and related facilities to Southern Nuclearbegin. Until March 2017, construction on Plant Vogtle Units 3 and to provide ongoing design, engineering, and procurement services to Southern Nuclear. On July 27, 2017, the Services Agreement, and the EPC Contractor's rejection of4 continued under the Vogtle 3 and 4 Agreement, became effective upon approval bywhich was a substantially fixed price agreement.
In connection with the DOE and the Interim Assessment Agreement expired pursuant to its terms. The Services Agreement will continue until the start-up and testing of Plant Vogtle Units 3 and 4 is complete and electricity is generated and sold from both units. The Services Agreement is terminable by the Vogtle Owners upon 30 days' written notice. Effective October 23,EPC Contractor's bankruptcy filing in March 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, entered into a construction completion agreement (Bechtel Agreement) with Bechtel Power Corporation (Bechtel), whereby Bechtel will serve as the primary contractor for the remaining construction activities for Plant Vogtle Units 3 and 4.
In the seventeenth Vogtle Construction Monitoring (VCM) report filed on August 31, 2017, Georgia Power recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and 4 is by November 2021 for Unit 3 and by November 2022 for Unit 4, at an additional cost of approximately $1.41 billion, net of the Guarantee Settlement Agreement. The Georgia PSC is expected to make a decision on these matters by February 6, 2018.
On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion in additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOE cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. See Note 6 to the financial statements of Southern Company under "DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information, including applicable covenants, events of default, mandatory prepayment events, and conditions to borrowing.
An inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4 and, therefore, on Southern Company's financial statements. The ultimate outcome of these matters cannot be determined at this time. See FUTURE EARNINGS POTENTIAL – "Construction ProgramNuclear Construction" herein for additional information on Plant Vogtle Units 3 and 4, including Georgia Power's cost-to-complete and cancellation cost assessments for Plant Vogtle Units 3 and 4.

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RESULTS OF OPERATIONS
Net Income
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(70) (6.1) $(1,904) (84.6)
Consolidated net income attributable to Southern Company was $1.07 billion ($1.07 per share) for the third quarter 2017 compared to $1.14 billion ($1.18 per share) for the corresponding period in 2016. The decrease was primarily due to a decrease in retail electric revenues due to milder weather and lower customer usage, a decrease in tax benefits at Southern Power, and an increase in depreciation and amortization. These changes were partially offset by higher retail electric revenues resulting from increases in base rates and a decrease in operations and maintenance expenses.
Consolidated net income attributable to Southern Company was $347 million ($0.35 per share) for year-to-date 2017 compared to $2.3 billion ($2.40 per share) for the corresponding period in 2016. The decrease was primarily due to charges of $3.2 billion and $222 million for year-to-date 2017 and 2016, respectively, related to the Kemper IGCC at Mississippi Power. Also contributing to the change was an increase of $299 million in net income from Southern Company Gas reflecting the nine-month period in 2017 compared to the three-month period following the Merger closing on July 1, 2016, higher retail electric revenues resulting from increases in base rates, and increases in renewable energy sales at Southern Power, partially offset by a decrease in retail electric revenues due to milder weather and lower customer usage, higher interest expense, and an increase in depreciation and amortization.
See Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information regarding the Kemper IGCC and Note (I) to the Condensed Financial Statements under "Southern Company" herein for additional information on the Merger.
Retail Electric Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(193) (4.0) $(146) (1.2)
In the third quarter 2017, retail electric revenues were $4.6 billion compared to $4.8 billion for the corresponding period in 2016. For year-to-date 2017, retail electric revenues were $11.8 billion compared to $11.9 billion for the corresponding period in 2016.
Details of the changes in retail electric revenues were as follows:
  Third Quarter 2017 Year-to-Date 2017
  (in millions) (% change) (in millions) (% change)
Retail electric – prior year $4,808
   $11,932
  
Estimated change resulting from –        
Rates and pricing 138
 2.9
 338
 2.8
Sales decline (52) (1.1) (74) (0.6)
Weather (162) (3.4) (351) (2.9)
Fuel and other cost recovery (117) (2.4) (59) (0.5)
Retail electric – current year $4,615
 (4.0)% $11,786
 (1.2)%
Revenues associated with changes in rates and pricing increased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016 primarily due to a Rate RSE increase at Alabama Power effective

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January 1, 2017, the recovery of Plant Vogtle Units 3 and 4 construction financing costs under the NCCR tariff at Georgia Power, and an increase in retail base revenues effective July 2017 and in environmental cost recovery effective November 2016 at Gulf Power.
See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Alabama Power," " Georgia Power Rate Plans," and " – Gulf Power – Retail Base Rate Cases" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein for additional information.
Revenues attributable to changes in sales decreased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016. Weather-adjusted residential KWH sales decreased 2.0% and 0.6% in the third quarter and year-to-date 2017, respectively, primarily due to decreased customer usage resulting from an increase in penetration of energy efficient residential appliances, partially offset by customer growth. Weather-adjusted commercial KWH sales decreased 1.4% and 1.1% in the third quarter and year-to-date 2017, respectively, primarily due to decreased customer usage resulting from customer initiatives in energy savings and an ongoing migration to the electronic commerce business model, partially offset by customer growth. Industrial KWH sales decreased 0.5% and 1.1% in the third quarter and year-to-date 2017, respectively, primarily in the paper sector, partially offset by increased sales in the primary metals and textile sectors. Despite a more stable dollar and improving global economy, the industrial sector remains constrained by economic policy uncertainty. Additionally, Hurricane Irma negatively impacted customer usage for all customer classes.
Fuel and other cost recovery revenues decreased $117 million and $59 million in the third quarter and year-to-date 2017, respectively, when compared to the corresponding periods in 2016 primarily due to lower energy sales resulting from milder weather and lower coal prices. Electric rates for the traditional electric operating companies include provisions to adjust billings for fluctuations in fuel costs, including the energy component of purchased power costs. Under these provisions, fuel revenues generally equal fuel expenses, including the energy component of PPA costs, and do not affect net income. The traditional electric operating companies each have one or more regulatory mechanisms to recover other costs such as environmental and other compliance costs, storm damage, new plants, and PPA capacity costs.
Wholesale Electric Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$105 17.1 $412 28.3
Wholesale electric revenues consist of PPAs primarily with investor-owned utilities and electric cooperatives and short-term opportunity sales. Wholesale electric revenues from PPAs (other than solar and wind PPAs) have both capacity and energy components. Capacity revenues generally represent the greatest contribution to net income and are designed to provide recovery of fixed costs plus a return on investment. Energy revenues will vary depending on fuel prices, the market prices of wholesale energy compared to the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation. Increases and decreases in energy revenues that are driven by fuel prices are accompanied by an increase or decrease in fuel costs and do not have a significant impact on net income. Energy sales from solar and wind PPAs do not have a capacity charge and customers either purchase the energy output of a dedicated renewable facility through an energy charge or through a fixed price related to the energy. As a result, Southern Company's ability to recover fixed and variable operations and maintenance expenses is dependent upon the level of energy generated from these facilities, which can be impacted by weather conditions, equipment performance, and other factors. Wholesale electric revenues at Mississippi Power include FERC-regulated municipal and rural association sales as well as market-based sales. Short-term opportunity sales are made at market-based rates that generally provide a margin above the Southern Company system's variable cost to produce the energy.

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In the third quarter 2017, wholesale electric revenues were $718 million compared to $613 million for the corresponding period in 2016. This increase was primarily related to a $78 million increase in energy revenues and a $27 million increase in capacity revenues. For year-to-date 2017, wholesale electric revenues were $1.9 billion compared to $1.5 billion for the corresponding period in 2016. This increase was primarily related to a $354 million increase in energy revenues and a $58 million increase in capacity revenues. The increases in energy revenues primarily relate to Southern Power increases in renewable energy sales arising from new solar and wind facilities and non-PPA revenues from short-term sales. The increases in capacity revenues primarily resulted from PPAs related to new natural gas facilities and additional customer capacity requirements at Southern Power.
Other Electric Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(13) (7.2) $(19) (3.6)
In the third quarter 2017, other electric revenues were $168 million compared to $181 million for the corresponding period in 2016. The decrease was primarily related to lower open access transmission tariff revenues, primarily as a result of the expiration of long-term transmission services contracts at Georgia Power and rate adjustments at Alabama Power, and a decrease in solar application fee revenues at Georgia Power.
For year-to-date 2017, other electric revenues were $510 million compared to $529 million for the corresponding period in 2016. The decrease was primarily due to a $14 million adjustment in 2016 for customer temporary facilities services revenues and a $12 million decrease in open access transmission tariff revenues, primarily as a result of the expiration of long-term transmission services contracts at Georgia Power, partially offset by a $10 million increase in outdoor lighting sales revenues primarily attributable to LED conversions at Georgia Power.
Natural Gas Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$14 2.7 $2,228 N/M
N/M - Not meaningful
Natural gas revenues represent sales from the natural gas distribution utilities and certain non-regulated operations of Southern Company Gas. In the third quarter 2017, natural gas revenues were $532 million compared to $518 million for the corresponding period in 2016. This increase is primarily due to infrastructure replacement programs and increases in base rate revenues at Southern Company Gas.
For year-to-date 2017, natural gas revenues were $2.7 billion compared to $518 million for the corresponding period in 2016. The increase reflects the inclusion of Southern Company Gas results for the nine-month period in 2017 compared to the three-month period subsequent to the Merger closing on July 1, 2016.
See Note (I) to the Condensed Financial Statements under "Southern CompanyMerger with Southern Company Gas" herein for additional information.
Other Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$24 16.7 $213 75.8
In the third quarter 2017, other revenues were $168 million compared to $144 million for the corresponding period in 2016. For year-to-date 2017, other revenues were $494 million compared to $281 million for the corresponding

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period in 2016. These increases were primarily due to increases of $5 million and $135 million for the third quarter and year-to-date 2017, respectively, from products and services at PowerSecure, which was acquired on May 9, 2016, and $8 million and $70 million for the third quarter and year-to-date 2017, respectively, of revenues from gas marketing products and services at Southern Company Gas following the Merger. Additionally, revenues from certain non-regulated sales of products and services at the traditional electric operating companies increased $5 million and $13 million for the third quarter and year-to-date 2017, respectively, primarily due to additional third-party infrastructure services.
See Note (I) to the Condensed Financial Statements under "Southern Company" herein for additional information on the Merger and the acquisition of PowerSecure.
Fuel and Purchased Power Expenses
 Third Quarter 2017
vs.
Third Quarter 2016
 Year-to-Date 2017
vs.
Year-to-Date 2016
 (change in millions) (% change) (change in millions) (% change)
Fuel$(115) (8.2) $38
 1.1
Purchased power29
 12.8 65
 11.2
Total fuel and purchased power expenses$(86)   $103
  
In the third quarter 2017, total fuel and purchased power expenses were $1.5 billion compared to $1.6 billion for the corresponding period in 2016. The decrease was primarily the result of a $104 million net decrease in the volume of KWHs generated and purchased, partially offset by an $18 million net increase in the average cost of fuel and purchased power primarily due to higher natural gas prices.
For year-to-date 2017, total fuel and purchased power expenses were $4.0 billion compared to $3.9 billion for the corresponding period in 2016. The increase was primarily the result of a $277 million increase in the average cost of fuel and purchased power primarily due to higher natural gas prices, partially offset by a $174 million decrease in the volume of KWHs generated and purchased.
Fuel and purchased power energy transactions at the traditional electric operating companies are generally offset by fuel revenues and do not have a significant impact on net income. See FUTURE EARNINGS POTENTIAL – "Regulatory MattersFuel Cost Recovery" herein for additional information. Fuel expenses incurred under Southern Power's PPAs are generally the responsibility of the counterparties and do not significantly impact net income.

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Details of the Southern Company system's generation and purchased power were as follows:
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 Year-to-Date 2016
Total generation (in billions of KWHs)
54 56 147 145
Total purchased power (in billions of KWHs)
6 6 14 15
Sources of generation (percent) —
       
Coal31 38 30 33
Nuclear15 15 16 16
Gas47 44 46 46
Hydro2 1 2 3
Other5 2 6 2
Cost of fuel, generated (in cents per net KWH) 
       
Coal2.82 2.97 2.82 3.10
Nuclear0.80 0.81 0.80 0.82
Gas2.92 2.74 2.93 2.40
Average cost of fuel, generated (in cents per net KWH)
2.54 2.54 2.51 2.38
Average cost of purchased power (in cents per net KWH)(*)
4.96 4.98 5.32 4.75
(*)Average cost of purchased power includes fuel purchased by the Southern Company system for tolling agreements where power is generated by the provider.
Fuel
In the third quarter 2017, fuel expense was $1.3 billion compared to $1.4 billion for the corresponding period in 2016. The decrease was primarily due to a 21.4% decrease in the volume of KWHs generated by coal and a 5.1% decrease in the average cost of coal per KWH generated, partially offset by a 6.6% increase in the average cost of natural gas per KWH generated and a 1.2% increase in the volume of KWHs generated by natural gas.
For year-to-date 2017, fuel expense was $3.4 billion compared to $3.3 billion for the corresponding period in 2016. The increase was primarily due to a 22.1% increase in the average cost of natural gas per KWH generated, partially offset by a 9.0% decrease in the average cost of coal per KWH generated, a 7.4% decrease in the volume of KWHs generated by coal, and a 3.7% decrease in the volume of KWHs generated by natural gas.
Purchased Power
In the third quarter 2017, purchased power expense was $256 million compared to $227 million for the corresponding period in 2016. The increase was primarily due to a 10.1% increase in the volume of KWHs purchased, partially offset by a 0.4% decrease in the average cost per KWH purchased.
For year-to-date 2017, purchased power expense was $646 million compared to $581 million for the corresponding period in 2016. The increase was primarily due to a 12.0% increase in the average cost per KWH purchased, primarily as a result of higher natural gas prices, partially offset by a 1.3% decrease in the volume of KWHs purchased.
Energy purchases will vary depending on demand for energy within the Southern Company system's electric service territory, the market prices of wholesale energy as compared to the cost of the Southern Company system's generation, and the availability of the Southern Company system's generation.

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Cost of Natural Gas
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$1 0.8 $952 N/M
N/M - Not meaningful
Cost of natural gas represents the cost of natural gas sold by the natural gas distribution utilities and certain non-regulated operations of Southern Company Gas. In the third quarter 2017, cost of natural gas was $134 million compared to $133 million for the corresponding period in 2016. For year-to-date 2017, cost of natural gas was $1.1 billion compared to $133 million for the corresponding period in 2016. The year-to-date increase reflects the inclusion of Southern Company Gas results for the nine-month period in 2017 compared to the three-month period subsequent to the Merger closing on July 1, 2016.
See Note (I) to the Condensed Financial Statements under "Southern CompanyMerger with Southern Company Gas" herein for additional information.
Cost of Other Sales
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$6 7.1 $132 82.0
In the third quarter 2017, cost of other sales was $90 million compared to $84 million for the corresponding period in 2016. For year-to-date 2017, cost of other sales was $293 million compared to $161 million for the corresponding period in 2016. The year-to-date increase primarily reflects costs related to sales of products and services by PowerSecure, which was acquired on May 9, 2016, and costs related to gas marketing products and services at Southern Company Gas following the Merger closing on July 1, 2016. See Note (I) to the Condensed Financial Statements under "Southern Company" herein for additional information.
Other Operations and Maintenance Expenses
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(124) (8.8) $302 8.4
In the third quarter 2017, other operations and maintenance expenses were $1.3 billion compared to $1.4 billion for the corresponding period in 2016. The decrease was primarily due to cost containment and modernization activities implemented at Georgia Power in the third quarter 2016 that contributed to decreases of $37 million in maintenance costs, $9 million in customer accounts, service, and sales costs, and $8 million in other employee compensation and benefits. Other factors include a $40 million decrease in acquisition-related expenses and a $31 million decrease in employee compensation and benefits including pension costs.
For year-to-date 2017, other operations and maintenance expenses were $3.9 billion compared to $3.6 billion for the corresponding period in 2016. The increase was primarily due to increases of $420 million and $32 million in operations and maintenance expenses as a result of the inclusion of Southern Company Gas and PowerSecure results for the nine-month period in 2017, respectively, a $48 million increase associated with new solar, wind, and gas facilities at Southern Power, and $32.5 million resulting from the write-down of Gulf Power's ownership of Plant Scherer Unit 3 in accordance with a settlement agreement approved by the Florida PSC on April 4, 2017 (2017 Rate Case Settlement Agreement). These increases were partially offset due to cost containment and modernization activities implemented at Georgia Power in the third quarter 2016 that contributed to decreases of $79 million in maintenance costs and $34 million in other employee compensation and benefits. Other factors

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include a $32 million decrease in acquisition-related expenses, a $25 million decrease in customer accounts, service, and sales costs primarily at Georgia Power, a $19 million increase in gains from sales of integrated transmission system assets at Georgia Power, and a $16 million decrease in scheduled outage and maintenance costs at generation facilities.
See Note (B) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" herein for additional information regarding the 2017 Rate Case Settlement Agreement and Note (I) to the Condensed Financial Statements under "Southern Company" herein for additional information related to the Merger and the acquisition of PowerSecure.
Depreciation and Amortization
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$72 10.4 $431 23.9
In the third quarter 2017, depreciation and amortization was $767 million compared to $695 million for the corresponding period in 2016. The increase is primarily related to additional plant in service at the traditional electric operating companies, Southern Power, and Southern Company Gas.
For year-to-date 2017, depreciation and amortization was $2.2 billion compared to $1.8 billion for the corresponding period in 2016. The increase reflects $254 million as a result of the inclusion of Southern Company Gas for the nine-month period in 2017 compared to the three-month period subsequent to the Merger closing on July 1, 2016. Additionally, the increase reflects $170 million related to additional plant in service at the traditional electric operating companies and Southern Power. The increase was partially offset by a $34 million increase in the reductions in depreciation authorized in Gulf Power's 2013 rate case settlement approved by the Florida PSC as compared to the corresponding period in 2016.
See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Gulf Power – Retail Base Rate Cases" in Item 8 of the Form 10-K and Notes (B) and (I) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" and "Southern CompanyMerger with Southern Company Gas," respectively, herein for additional information.
Taxes Other Than Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(6) (1.9) $120 14.6
For year-to-date 2017, taxes other than income taxes were $941 million compared to $821 million for the corresponding period in 2016. The increase primarily reflects the inclusion of Southern Company Gas taxes for the nine-month period in 2017 compared to the three-month period subsequent to the Merger closing on July 1, 2016.
See Note (I) to the Condensed Financial Statements under "Southern CompanyMerger with Southern Company Gas" herein for additional information.

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Estimated Loss on Kemper IGCC
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(54) (61.4) $2,933 N/M
N/M - Not meaningful
Estimated probable losses on the Kemper IGCC of $34 million and $3.2 billion were recorded at Mississippi Power in the third quarter and year-to-date 2017, respectively, compared to $88 million and $222 million in the third quarter and year-to-date 2016, respectively. While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable. As a result, Mississippi Power suspended the project on June 28, 2017, and recorded $34 million and $2.9 billion of additional charges to income in the third quarter and year-to-date 2017, respectively, for the estimated costs associated with the gasification portions of the plant and lignite mine.
Prior to the project's suspension, Mississippi Power recorded losses for revisions of estimated costs expected to be incurred on construction of the Kemper IGCC in excess of the $2.88 billion cost cap established by the Mississippi PSC, net of $245 million of grants awarded to the project by the DOE under the Clean Coal Power Initiative Round 2 (Initial DOE Grants) and excluding the cost of the lignite mine and equipment, the cost of the CO2 pipeline facilities, AFUDC, and certain general exceptions, including change of law, force majeure, and beneficial capital (construction cost increase demonstrated to produce efficiencies that result in a neutral or favorable effect on customers relative to the original proposal for the CPCN) (Cost Cap Exceptions).
See FUTURE EARNINGS POTENTIAL – "Construction ProgramIntegrated Coal Gasification Combined Cycle" and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Allowance for Equity Funds Used During Construction
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(34) (65.4) $(17) (11.3)
In the third quarter 2017, AFUDC equity was $18 million compared to $52 million in the corresponding period in 2016. For year-to-date 2017, AFUDC equity was $133 million compared to $150 million in the corresponding period in 2016. These decreases primarily resulted from Mississippi Power's suspension of the Kemper IGCC project in June 2017.
See FUTURE EARNINGS POTENTIAL – "Construction ProgramIntegrated Coal Gasification Combined Cycle" and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Earnings from Equity Method Investments
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$3 10.3 $72 N/M
N/M - Not meaningful
In the third quarter 2017, earnings from equity method investments were $32 million compared to $29 million in the corresponding period in 2016. For year-to-date 2017, earnings from equity method investments were $100 million

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compared to $28 million in the corresponding period in 2016. These increases were primarily related to Southern Company Gas' equity method investment in SNG in September 2016.
See Note 12 to the financial statements of Southern Company under "Southern Company – Investment in Southern Natural Gas" in Item 8 of the Form 10-K for additional information.
Interest Expense, Net of Amounts Capitalized
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$33 8.8 $335 36.7
In the third quarter 2017, interest expense, net of amounts capitalized was $407 million compared to $374 million in the corresponding period in 2016. The increase was primarily due to an increase in average outstanding long-term debt and a $16 million decrease in interest capitalized, partially offset by a net reduction of $33 million following Mississippi Power's settlement with the IRS related to research and experimental (R&E) deductions.
For year-to-date 2017, interest expense, net of amounts capitalized was $1.2 billion compared to $913 million in the corresponding period in 2016. The increase was primarily due to an increase in average outstanding long-term debt and a $31 million decrease in interest capitalized, partially offset by a net reduction of $33 million following Mississippi Power's settlement with the IRS related to R&E deductions. In addition, year-to-date 2017 includes an additional $106 million reflecting the nine-month period of interest expense for Southern Company Gas compared to the three-month period subsequent to the Merger closing on July 1, 2016.
See FUTURE EARNINGS POTENTIAL – "Income Tax Matters – Section 174 Research and Experimental Deduction" and Notes (E) and (G) to the Condensed Financial Statements herein for additional information.
Other Income (Expense), Net
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$19 N/M $68 N/M
N/M - Not meaningful
In the third quarter 2017, other income (expense), net was $11 million compared to $(8) million for the corresponding period in 2016. For year-to-date 2017, other income (expense), net was $2 million compared to $(66) million for the corresponding period in 2016. These changes were primarily due to $14 million and $16 million from settlement of contractor litigation claims at Southern Company Gas in the third quarter and year-to-date 2017, respectively, and increases of $6 million and $10 million in customer contributions in aid of construction and contract service revenue at Georgia Power in the third quarter and year-to-date 2017, respectively. Additionally, the year-to-date change reflects $30 million of expenses incurred in 2016 associated with bridge financing for the Merger. These changes also include increases of $36 million and $152 million in currency losses arising from a translation of euro-denominated fixed-rate notes into U.S. dollars for the third quarter and year-to-date 2017, respectively, fully offset by an equal change in gains on the foreign currency hedges that were reclassified from accumulated OCI into earnings at Southern Power.
See Note (H) to the Condensed Financial Statements under "Foreign Currency Derivatives" herein for additional information.

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Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$151 34.4 $(600) (65.4)
In the third quarter 2017, income taxes were $590 million compared to $439 million for the corresponding period in 2016. The increase was primarily due to a $61 million decrease in income tax benefits from solar ITCs at Southern Power, a $23 million increase in deferred income tax expenses associated with new State of Illinois tax legislation and new tax apportionment factors at Southern Company Gas, and a $21 million decrease in tax benefits related to estimated losses on the Kemper IGCC at Mississippi Power.
For year-to-date 2017, income taxes were $317 million compared to $917 million for the corresponding period in 2016. The decrease was primarily due to $866 million in tax benefits related to estimated losses on the Kemper IGCC at Mississippi Power, partially offset by a $226 million increase reflecting the nine-month period of income taxes at Southern Company Gas in 2017 compared to the three-month period subsequent to the Merger closing on July 1, 2016 and a $44 million net decrease in tax benefits from renewable tax credits at Southern Power.
See Notes (B), (G), and (I) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle," "Effective Tax Rate," and "Southern CompanyMerger with Southern Company Gas," respectively, herein for additional information.
FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Southern Company's future earnings potential. The level of Southern Company's future earnings depends on numerous factors that affect the opportunities, challenges, and risks of the Southern Company system's primary businesses of selling electricity and distributing natural gas. These factors include the traditional electric operating companies' and the natural gas distribution utilities' ability to maintain a constructive regulatory environment that allows for the timely recovery of prudently-incurred costs during a time of increasing costs and limited projected demand growth over the next several years. Matters related to Plant Vogtle Units 3 and 4 construction and rate recovery and the ability to recover costs for the remainder of the Kemper County energy facility not included in current rates are also major factors. In addition, the profitability of Southern Power's competitive wholesale business and successful additional investments in renewable and other energy projects are also major factors.
Current proposals related to potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals, including any potential changes to the availability or realizability of ITCs and PTCs, is dependent on the final form of any legislation enacted and the related transition rules and cannot be determined at this time, but could have a material impact on Southern Company's financial statements.
Future earnings for the electricity and natural gas businesses will be driven primarily by customer growth. Earnings in the electricity business will also depend upon maintaining and growing sales, considering, among other things, the adoption and/or penetration rates of increasingly energy-efficient technologies, increasing volumes of electronic commerce transactions, and higher multi-family home construction. Earnings for both the electricity and natural gas businesses are subject to a variety of other factors. These factors include weather, competition, new energy contracts with other utilities and other wholesale customers, energy conservation practiced by customers, the use of alternative energy sources by customers, the prices of electricity and natural gas, the price elasticity of demand, and the rate of economic growth or decline in the service territory. In addition, the level of future earnings for the wholesale electric business also depends on numerous factors including regulatory matters, creditworthiness of customers, total electric generating capacity available and related costs, future acquisitions and construction of electric generating facilities, the impact of tax credits from renewable energy projects, and the successful remarketing of capacity as current contracts expire. Demand for electricity and natural gas is primarily driven by the pace of economic growth that may be affected by changes in regional and global economic conditions, which may

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impact future earnings. In addition, the volatility of natural gas prices has a significant impact on the natural gas distribution utilities' customer rates, long-term competitive position against other energy sources, and the ability of Southern Company Gas' gas marketing services and wholesale gas services businesses to capture value from locational and seasonal spreads. Additionally, changes in commodity prices subject a significant portion of Southern Company Gas' operations to earnings variability.
As part of its ongoing effort to adapt to changing market conditions, Southern Company continues to evaluate and consider a wide array of potential business strategies. These strategies may include business combinations, partnerships, and acquisitions involving other utility or non-utility businesses or properties, disposition of certain assets or businesses, internal restructuring, or some combination thereof. Furthermore, Southern Company may engage in new business ventures that arise from competitive and regulatory changes in the utility industry. Pursuit of any of the above strategies, or any combination thereof, may significantly affect the business operations, risks, and financial condition of Southern Company.
Southern Power is considering the sale of up to a one-third equity interest in its solar asset portfolio. The ultimate outcome of this matter cannot be determined at this time.
On October 15, 2017, a wholly-owned subsidiary of Southern Company Gas entered into agreements for the sale of the assets of two of its natural gas distribution utilities, Elizabethtown Gas and Elkton Gas, to South Jersey Industries, Inc. for a total cash purchase price of $1.7 billion. As of September 30, 2017, the net book value of the assets to be disposed of in the sale was approximately $1.5 billion, which includes approximately $0.5 billion of goodwill. The goodwill is not deductible for tax purposes and as a result, a deferred tax liability has not yet been provided for goodwill. Through the completion of the sale, Southern Company Gas intends to invest approximately $0.1 billion in capital expenditures which are required for ordinary business operations. The completion of each sale is subject to the satisfaction or waiver of certain closing conditions, including, among others, (i) the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act; (ii) the receipt of required regulatory approvals, including the FERC, the Federal Communications Commission, the New Jersey BPU, and, with respect to the sale of Elkton Gas, the Maryland PSC; and (iii) other customary closing conditions. The sales are expected to be completed by the end of the third quarter 2018. The ultimate outcome of these matters cannot be determined at this time.
For additional information relating to these issues, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL of Southern Company in Item 7 of the Form 10-K and RISK FACTORS in Item 1A herein.
Environmental Matters
Compliance costs related to federal and state environmental statutes and regulations could affect earnings if such costs cannot continue to be fully recovered in rates on a timely basis for the traditional electric operating companies and the natural gas distribution utilities or through long-term wholesale agreements for the traditional electric operating companies and Southern Power. Environmental compliance spending over the next several years may differ materially from the amounts estimated. The timing, specific requirements, and estimated costs could change as environmental statutes and regulations are adopted or modified, as compliance plans are revised or updated, and as legal challenges to rules are completed. Further, higher costs that are recovered through regulated rates could contribute to reduced demand for electricity and natural gas, which could negatively affect results of operations, cash flows, and financial condition. See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters" of Southern Company in Item 7 and Note 3 to the financial statements of Southern Company under "Environmental Matters" in Item 8 of the Form 10-K for additional information.

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Environmental Statutes and Regulations
Air Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Air Quality" of Southern Company in Item 7 of the Form 10-K for additional information regarding the EPA's eight-hour ozone National Ambient Air Quality Standard (NAAQS).
On June 2, 2017, the EPA published a final rule redesignating a 15-county area within metropolitan Atlanta to attainment for the 2008 eight-hour ozone NAAQS.
On June 18, 2017, the EPA published a notice delaying attainment designations for the 2015 eight-hour ozone NAAQS by one year, setting a revised deadline of October 1, 2018. However, on August 2, 2017, the EPA issued a withdrawal notice of the one-year extension and reinstated the original October 1, 2017 designation deadline. The ultimate outcome of this matter cannot be determined at this time.
Water Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Water Quality" of Southern Company in Item 7 of the Form 10-K for additional information regarding the final effluent guidelines rule and the final rule revising the regulatory definition of waters of the U.S. for all Clean Water Act (CWA) programs.
On April 25, 2017, the EPA published a notice announcing it would reconsider the effluent guidelines rule, which had been finalized in November 2015. On September 18, 2017, the EPA published a final rule establishing a stay of the compliance deadlines for certain effluent limitations and pretreatment standards under the rule.
On June 27, 2017, the EPA and the U.S. Army Corps of Engineers proposed to rescind the final rule that revised the regulatory definition of waters of the U.S. for all CWA programs. The final rule has been stayed since October 2015 by the U.S. Court of Appeals for the Sixth Circuit.
The ultimate outcome of these matters cannot be determined at this time.
Global Climate Issues
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Global Climate Issues" of Southern Company in Item 7 of the Form 10-K for additional information.
On March 28, 2017, the U.S. President signed an executive order directing agencies to review actions that potentially burden the development or use of domestically produced energy resources. The executive order specifically directs the EPA to review the Clean Power Plan and final greenhouse gas emission standards for new, modified, and reconstructed electric generating units and, if appropriate, take action to suspend, revise, or rescind those rules. On October 16, 2017, the EPA published a proposed rule to repeal the Clean Power Plan. The EPA has not determined whether or when it will promulgate a replacement rule.
On June 1, 2017, the U.S. President announced that the United States will withdraw from the non-binding Paris Agreement and begin renegotiation of its terms.
The ultimate outcome of these matters cannot be determined at this time.
Natural Gas Storage
A wholly-owned subsidiary of Southern Company Gas owns and operates a natural gas storage facility consisting of two salt dome caverns in Louisiana. Periodic integrity tests are required in accordance with rules of the Louisiana Department of Natural Resources (LDNR). In August 2017, in connection with an ongoing integrity project, updated seismic mapping indicated the proximity of one of the caverns to the edge of the salt dome may be less than the required minimum and could result in Southern Company Gas retiring the cavern early. At September 30, 2017, the facility's property, plant, and equipment had a net book value of $111 million, of which the cavern itself

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represents approximately 20%. A potential early retirement of this cavern is dependent upon several factors including the results of ongoing third-party technical engineering reviews, testing, and compliance with an order from the LDNR detailing the requirements to place the cavern back in service, which includes, among other things, obtaining a core sample to determine the composition of the sheath surrounding the edge of the salt dome. Early retirement of the cavern could trigger impairment of other long-lived assets associated with the natural gas storage facility. The ultimate outcome of this matter cannot be determined at this time, but could have a significant impact on Southern Company's financial statements.
FERC Matters
Market-Based Rate Authority
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters Market-Based Rate Authority" of Southern Company in Item 7 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017 order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Southern Company Gas
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters Southern Company Gas" of Southern Company in Item 7 and Note 4 to the financial statements of Southern Company in Item 8 of the Form 10-K for additional information regarding Southern Company Gas' pipeline projects.
On August 1, 2017, the Dalton Pipeline was placed in service as authorized by the FERC and transportation service for customers commenced.
On October 13, 2017, the Atlantic Coast Pipeline project received FERC approval.
Regulatory Matters
Fuel Cost Recovery
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Regulatory Matters Fuel Cost Recovery" of Southern Company in Item 7 and Note 3 to the financial statements of Southern Company under "Regulatory Matters – Alabama Power – Rate ECR" and "Regulatory Matters – Georgia Power – Fuel Cost Recovery" in Item 8 of the Form 10-K for additional information regarding fuel cost recovery for the traditional electric operating companies.
The traditional electric operating companies each have established fuel cost recovery rates approved by their respective state PSCs. Fuel cost recovery revenues are adjusted for differences in actual recoverable fuel costs and amounts billed in current regulated rates. Accordingly, changes in the billing factor will not have a significant effect

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on Southern Company's revenues or net income, but will affect cash flow. The traditional electric operating companies continuously monitor their under or over recovered fuel cost balances and make appropriate filings with their state PSCs to adjust fuel cost recovery rates as necessary.
Renewables
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Regulatory Matters Renewables" of Southern Company in Item 7 of the Form 10-K for additional information regarding the Southern Company system's renewables activity.
On May 16, 2017, the Georgia PSC approved Georgia Power's request to build, own, and operate a 139-MW solar generation facility at a U.S. Air Force base that is expected to be placed in service by the end of 2019.
During the nine months ended September 30, 2017, Georgia Power continued construction of a 31-MW solar generation facility at a U.S. Marine Corps base that is expected to be placed in service in the fourth quarter 2017.
In 2015, the Florida PSC approved Gulf Power's three energy purchase agreements totaling 120 MWs of utility-scale solar generation located at three military installations in northwest Florida. Purchases under these agreements began in the summer of 2017.
Mississippi Power placed in service three solar projects in January, June, and October 2017. Mississippi Power may retire the renewable energy credits (REC) generated on behalf of its customers or sell the RECs, separately or bundled with energy, to third parties.
On August 17, 2017, the Mississippi PSC approved Mississippi Power's CPCN for the construction, operation, and maintenance of a 52.5-MW solar energy generating facility, which is expected to be placed in service by January 2020.
The ultimate outcome of these matters cannot be determined at this time.
Alabama Power
Alabama Power's revenues from regulated retail operations are collected through various rate mechanisms subject to the oversight of the Alabama PSC. Alabama Power currently recovers its costs from the regulated retail business primarily through Rate RSE, Rate CNP, Rate ECR, and Rate NDR. In addition, the Alabama PSC issues accounting orders to address current events impacting Alabama Power. See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Alabama Power" in Item 8 of the Form 10-K for additional information regarding Alabama Power's rate mechanisms and accounting orders. The recovery balance of each regulatory clause for Alabama Power is reported in Note (B) to the Condensed Financial Statements herein.
Georgia Power
Georgia Power's revenues from regulated retail operations are collected through various rate mechanisms subject to the oversight of the Georgia PSC. Georgia Power currently recovers its costs from the regulated retail business through the 2013 ARP, which includes traditional base tariff rates, Demand-Side Management tariffs, Environmental Compliance Cost Recovery tariffs, and Municipal Franchise Fee tariffs. In addition, financing costs related to the construction of Plant Vogtle Units 3 and 4 are being collected through the NCCR tariff and fuel costs are collected through a separate fuel cost recovery tariff. See Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerNuclear Construction" herein and Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Nuclear Construction" in Item 8 of the Form 10-K for additional information regarding Georgia Power's NCCR tariff. Also see Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerFuel Cost Recovery" herein for additional information regarding Georgia Power's fuel cost recovery.

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Integrated Resource Plan
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Regulatory Matters – Georgia Power – Integrated Resource Plan" of Southern Company in Item 7 of the Form 10-K for additional information regarding Georgia Power's triennial Integrated Resource Plan.
On March 7, 2017, the Georgia PSC approved Georgia Power's decision to suspend work at a future generation site in Stewart County, Georgia, due to changing economics, including load forecasts and lower fuel costs. The timing of recovery for costs incurred of approximately $50 million will be determined by the Georgia PSC in a future base rate case. The ultimate outcome of this matter cannot be determined at this time.
Storm Damage Recovery
Georgia Power is accruing $30 million annually through December 31, 2019, as provided in the 2013 ARP, for incremental operating and maintenance costs of damage from major storms to its transmission and distribution facilities. During September 2017, Hurricane Irma caused significant damage to Georgia Power's transmission and distribution facilities. The total amount of incremental restoration costs related to this hurricane is estimated to be approximately $150 million. As of September 30, 2017, Georgia Power had deferred approximately $145 million in a regulatory asset related to storm damage. As of September 30, 2017, the total balance in Georgia Power's regulatory asset related to storm damage was $360 million. The rate of storm damage cost recovery is expected to be adjusted as part of Georgia Power's next base rate case required to be filed by July 1, 2019. As a result of this regulatory treatment, costs related to storms are not expected to have a material impact on Southern Company's financial statements. See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Storm Damage Recovery" in Item 8 of the Form 10-K for additional information regarding Georgia Power's storm damage reserve.
Gulf Power
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Regulatory Matters – Gulf Power" of Southern Company in Item 7 of the Form 10-K for additional information regarding Gulf Power's October 2016 request to the Florida PSC to increase retail base rates and Gulf Power's ownership of Plant Scherer Unit 3.
On April 4, 2017, the Florida PSC approved the 2017 Rate Case Settlement Agreement among Gulf Power and three intervenors with respect to Gulf Power's request to increase retail base rates. Among the terms of the 2017 Rate Case Settlement Agreement, Gulf Power increased rates effective with the first billing cycle in July 2017 to provide an annual overall net customer impact of approximately $54.3 million. The net customer impact consisted of a $62.0 million increase in annual base revenues less an annual equivalent credit of approximately $7.7 million for 2017 for certain wholesale revenues to be provided through December 2019 through the purchased power capacity cost recovery clause. In addition, Gulf Power continued its authorized retail ROE midpoint (10.25%) and range (9.25% to 11.25%) and is deemed to have an equity ratio of 52.5% for all retail regulatory purposes. Gulf Power will also begin amortizing the regulatory asset associated with the investment balances remaining after the retirement of Plant Smith Units 1 and 2 (357 MWs) over 15 years effective January 1, 2018 and will implement new depreciation rates effective January 1, 2018. The 2017 Rate Case Settlement Agreement also resulted in a $32.5 million write-down of Gulf Power's ownership of Plant Scherer Unit 3 (205 MWs), which was recorded in the first quarter 2017. The remaining issues related to the inclusion of Gulf Power's investment in Plant Scherer Unit 3 in retail rates have been resolved as a result of the 2017 Rate Case Settlement Agreement, including recoverability of certain costs associated with the ongoing ownership and operation of the unit through the environmental cost recovery clause rate approved by the Florida PSC in November 2016.

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Southern Company Gas
Natural Gas Cost Recovery
Southern Company Gas has established natural gas cost recovery rates approved by the relevant state regulatory agencies in the states in which it serves. Natural gas cost recovery revenues are adjusted for differences in actual recoverable natural gas costs and amounts billed in current regulated rates. Changes in the billing factor will not have a significant effect on Southern Company's revenues or net income, but will affect cash flows.
Base Rate Cases
On March 10, 2017, Nicor Gas filed a general base rate case with the Illinois Commission requesting a $208 million increase in annual base rate revenues. The requested increase is based on a 2018 projected test year and a ROE of 10.7%. The Illinois Commission is expected to rule on the requested increase in December 2017, after which rate adjustments will be effective. The ultimate outcome of this matter cannot be determined at this time.
Construction Program
Overview
The subsidiary companies of Southern Company are engaged in continuous construction programs to accommodate existing and estimated future loads on their respective systems. The Southern Company system intends to continue its strategy of developing and constructing new electric generating facilities, adding environmental modifications to certain existing units, expanding the electric transmission and distribution systems, and updating and expanding the natural gas distribution systems. For the traditional electric operating companies, major generation construction projects are subject to state PSC approval in order to be included in retail rates. Following Mississippi Power's suspension of the Kemper IGCC construction, the largest construction project currently underway in the Southern Company system is Plant Vogtle Units 3 and 4 (45.7% ownership interest by Georgia Power in the two units, each with approximately 1,100 MWs). In August 2017, Georgia Power filed its seventeenth VCM report with the Georgia PSC, in which it recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and 4 is by November 2021 for Unit 3 and by November 2022 for Unit 4, at an additional cost of approximately $1.41 billion, net of the Guarantee Settlement Agreement. The Georgia PSC is expected to make a decision on these and other related matters by February 6, 2018. While Southern Power generally constructs and acquires generation assets covered by long-term PPAs, any uncontracted capacity could negatively affect future earnings. Southern Company Gas is engaged in various infrastructure improvement programs designed to update or expand the natural gas distribution systems of the natural gas distribution utilities to improve reliability and meet operational flexibility and growth. The natural gas distribution utilities recover their investment and a return associated with these infrastructure programs through their regulated rates.
For additional information, see Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Nuclear Construction" and " – Southern Company Gas – Regulatory Infrastructure Programs" and "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Regulatory Matters Georgia Power – Nuclear Construction" and " Southern Company GasRegulatory Infrastructure Programs" and "Integrated Coal Gasification Combined Cycle" herein. Also see Note 12 to the financial statements of Southern Company under "Southern Power – Construction Projects" in Item 8 of the Form 10-K and Note (I) to the Condensed Financial Statements under "Southern Power" herein.
Also see FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" herein for additional information regarding Southern Company's capital requirements for its subsidiaries' construction programs.

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Integrated Coal Gasification Combined Cycle
The Kemper IGCC was approved by the Mississippi PSC in the 2010 CPCN proceedings, subject to a construction cost cap of $2.88 billion, net of $245 million of Initial DOE Grants and excluding the Cost Cap Exceptions. The combined cycle and associated common facilities portion of the Kemper IGCC were placed in service in August 2014.
In December 2015, the Mississippi PSC issued an order (In-Service Asset Rate Order), based on a stipulation between Mississippi Power and the MPUS, authorizing rates that provide for the recovery of approximately $126 million annually related to the combined cycle and associated common facilities portion of Kemper IGCC assets previously placed in service. As required by the In-Service Asset Rate Order, on June 5, 2017, Mississippi Power made a rate filing requesting to adjust the amortization schedules of the regulatory assets reviewed and determined prudent in a manner that would not change customer rates or annual revenues. On June 28, 2017, the Mississippi PSC suspended this filing. On July 6, 2017, the Mississippi PSC issued an order requiring Mississippi Power to establish a regulatory liability account to maintain current rates related to the Kemper IGCC following the July 2017 completion of the amortization period for certain regulatory assets approved in the In-Service Asset Rate Order that would allow for subsequent refund if the Mississippi PSC deems the rates unjust and unreasonable. At September 30, 2017, the related regulatory liability totaled $7 million.
The initial production of syngas began on July 14, 2016 for gasifier "B" and on September 13, 2016 for gasifier "A." Mississippi Power achieved integrated operation of both gasifiers on January 29, 2017, including the production of electricity from syngas in both combustion turbines. During testing, the plant produced and captured CO2, and produced sulfuric acid and ammonia, each of acceptable quality under the related off-take agreements. However, Mississippi Power experienced numerous challenges during the extended start-up process to achieve integrated operation of the gasifiers on a sustained basis. In May 2017, after achieving these milestones, Mississippi Power determined that a critical system component, the syngas coolers, would need replacement sooner than originally planned, which would require significant lead time and significant cost. In addition, the long-term natural gas price forecast has decreased significantly and the estimated cost of operating and maintaining the facility during the first five full years of operations has increased significantly since certification.
On June 21, 2017, the Mississippi PSC stated its intent to issue the Kemper Settlement Order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC plant, and address all issues associated with the Kemper IGCC. The Kemper Settlement Order established the Kemper IGCC Settlement Docket for the purposes of pursuing a global settlement of costs of the Kemper IGCC. The Mississippi PSC requested any such proposed settlement agreement reflect: (i) at a minimum, no rate increase to Mississippi Power customers (with a rate reduction focused on residential customers encouraged); (ii) removal of all cost risk to customers associated with the Kemper IGCC gasifier and related assets; and (iii) modification or amendment of the CPCN for the Kemper IGCCtransitional arrangements to allow only for ownership and operation of a natural gas facility.
On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a processconstruction to suspend operations and start-up activities on the gasifier portion of the Kemper IGCC, given the uncertainty as to the future of the gasifier portion of the Kemper IGCC. Mississippi Power expects to continue to operate the combined cycle portion of the Kemper IGCC as it has done since August 2014. At the time of project suspension, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subject to the construction cost cap, and was net of the $137 million in Additional DOE Grants.
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs associated with the gasification portions of the plant and lignite mine.continue. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension,

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which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.
Total pre-tax charges to income for the estimated probable losses on the Kemper IGCC were $34 million ($21 million after tax) for the third quarter 2017 and $3.2 billion ($2.2 billion after tax) for the nine months ended September 30, 2017. In the aggregate, since the Kemper IGCC project started, Mississippi Power has incurred charges of $6.0 billion ($4.0 billion after tax) through September 30, 2017.
Mississippi Power reached and filed a settlement agreement on August 21, 2017 with certain parties (not including the MPUS), which it believes met the conditions of the Kemper Settlement Order. The settlement agreement provides for an annual revenue requirement of $126 million for Kemper IGCC-related costs, which would (i) be effective January 1, 2018, (ii) represent no rate increase for customers, and (iii) include no recovery for the costs associated with the gasifier portion of the Kemper IGCC in 2018 or at any future date. In addition, under the settlement agreement, the CPCN for the Kemper IGCC would be modified to limit the Kemper County energy facility to natural gas combined cycle operation and Mississippi Power would, in the future, file a reserve margin plan with the Mississippi PSC. The Mississippi PSC issued a scheduling order, as amended on October 5, 2017, noting Mississippi Power and the MPUS had failed to reach a joint stipulation and ordering a full hearing. The Mississippi PSC is expected to rule on an order resolving this matter in January 2018.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which $0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimate for the combined cycle portion of the facility, as well as the 15% that was previously contracted to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistent with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.
For additional information on the Kemper IGCC, including information on the project economic viability analysis, pending lawsuits, and an ongoing SEC investigation, see Note 3 to the financial statements of Southern Company under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" and "Other Matters" and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein. Also see "Litigation" herein.
Litigation
On April 26, 2016, a complaint against Mississippi Power was filed in Harrison County Circuit Court (Circuit Court) by Biloxi Freezing & Processing Inc., Gulfside Casino Partnership, and John Carlton Dean, which was amended and refiled on July 11, 2016 to include, among other things, Southern Company as a defendant. The individual plaintiff alleges that Mississippi Power and Southern Company violated the Mississippi Unfair Trade Practices Act. All plaintiffs have alleged that Mississippi Power and Southern Company concealed, falsely represented, and failed to fully disclose important facts concerning the cost and schedule of the Kemper IGCC and that these alleged breaches have unjustly enriched Mississippi Power and Southern Company. The plaintiffs seek unspecified actual damages and punitive damages; ask the Circuit Court to appoint a receiver to oversee, operate, manage, and otherwise control all affairs relating to the Kemper IGCC; ask the Circuit Court to revoke any licenses or certificates authorizing Mississippi Power or Southern Company to engage in any business related to the Kemper IGCC in Mississippi; and seek attorney's fees, costs, and interest. The plaintiffs also seek an injunction to prevent any Kemper IGCC costs from being charged to customers through electric rates. On June 23, 2017, the Circuit

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Court ruled in favor of motions by Southern Company and Mississippi Power and dismissed the case. On July 7, 2017, the plaintiffs filed notice of an appeal.
On June 9, 2016, Treetop Midstream Services, LLC (Treetop) and other related parties filed a complaint against Mississippi Power, Southern Company, and SCS in the state court in Gwinnett County, Georgia. The complaint relates to the cancelled CO2 contract with Treetop and alleges fraudulent misrepresentation, fraudulent concealment, civil conspiracy, and breach of contract on the part of Mississippi Power, Southern Company, and SCS and seeks compensatory damages of $100 million, as well as unspecified punitive damages. Southern Company, Mississippi Power, and SCS moved to compel arbitration pursuant to the terms of the CO2 contract, which the court granted on May 4, 2017. On June 28, 2017, Treetop and other related parties filed a claim for arbitration requesting $500 million in damages.
Southern Company believes these legal challenges have no merit; however, an adverse outcome in these proceedings could have a material impact on Southern Company's results of operations, financial condition, and liquidity. Southern Company will vigorously defend itself in these matters, and the ultimate outcome of these matters cannot be determined at this time.
Nuclear Construction
See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Nuclear Construction" in Item 8 of the Form 10-K for additional information regarding the construction of Plant Vogtle Units 3 and 4, VCM reports, the NCCR tariff, and the Contractor Settlement Agreement.
Vogtle 3 and 4 Agreement and EPC Contractor Bankruptcy
In 2008, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into the Vogtle 3 and 4 Agreement, pursuant to which the EPC Contractor agreed to design, engineer, procure, construct, and test Plant Vogtle Units 3 and 4. Under the terms of the Vogtle 3 and 4 Agreement, the Vogtle Owners agreed to pay a purchase price subject to certain price escalations and adjustments, including fixed escalation amounts and index-based adjustments, as well as adjustments for change orders, and performance bonuses for early completion and unit performance. Georgia Power's proportionate share of Plant Vogtle Units 3 and 4 is 45.7%.
The Vogtle 3 and 4 Agreement also provided for liquidated damages upon the EPC Contractor's failure to fulfill the schedule and certain performance guarantees, each subject to an aggregate cap of 10% of the contract price, or approximately $920 million (approximately $420 million based on Georgia Power's ownership interest). Under the Toshiba Guarantee, Toshiba guaranteed certain payment obligations of the EPC Contractor, including any liability of the EPC Contractor for abandonment of work. In January 2016, Westinghouse delivered to the Vogtle Owners $920 million of letters of credit from financial institutions (Westinghouse Letters of Credit) to secure a portion of the EPC Contractor's potential obligations under the Vogtle 3 and 4 Agreement. The Westinghouse Letters of Credit are subject to annual renewals through June 30, 2020 and require 60 days' written notice to Georgia Power in the event the Westinghouse Letters of Credit will not be renewed.
Under the terms of the Vogtle 3 and 4 Agreement, the EPC Contractor did not have the right to terminate the Vogtle 3 and 4 Agreement for convenience. In the event of an abandonment of work by the EPC Contractor, the maximum liability of the EPC Contractor under the Vogtle 3 and 4 Agreement was 40% of the contract price (approximately $1.7 billion based on Georgia Power's ownership interest).
On March 29, 2017, the EPC Contractor filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. To provide for a continuation of work at Plant Vogtle Units 3 and 4, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into the Interim Assessment Agreement, which the bankruptcy court approved on March 30, 2017.
The Interim Assessment Agreement provided, among other items, that during the term of the Interim Assessment Agreement Georgia Power was obligated to pay, on behalf of the Vogtle Owners, all costs accrued by the EPC Contractor for subcontractors and vendors for services performed or goods provided. The Interim Assessment Agreement, as amended, expired on July 27, 2017.

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Subsequent to the EPC Contractor bankruptcy filing, a number of subcontractors to the EPC Contractor, including Fluor Enterprises, Inc., a subsidiary of Fluor Corporation, alleged non-payment by the EPC Contractor for amounts owed for work performed on Plant Vogtle Units 3 and 4. Georgia Power, acting for itself and as agent for the Vogtle Owners, has taken, and continues to take, actions to remove liens filed by these subcontractors through the posting of surety bonds. Georgia Power estimates the aggregate liability, through September 30, 2017, of the Vogtle Owners for the removal of subcontractor liens and payment of other EPC Contractor pre-petition accounts payable to total approximately $386 million, of which $340 million had been paid or accrued as of September 30, 2017. Georgia Power's proportionate share of this aggregate liability totaled approximately $176 million.
On June 9, 2017, Georgia Power and the other Vogtle Owners and Toshiba entered into the Guarantee Settlement Agreement. Pursuant to the Guarantee Settlement Agreement, Toshiba acknowledged the amount of its obligation under the Toshiba Guarantee is $3.68 billion, of which Georgia Power's proportionate share is approximately $1.7 billion, and that the Guarantee Obligations exist regardless of whether Plant Vogtle Units 3 and 4 are completed. The Guarantee Settlement Agreement also provides for a schedule of payments for the Guarantee Obligations, which will reduce CWIP, beginning in October 2017 and continuing through January 2021. In the event Toshiba receives certain payments, including sale proceeds, from or related to Westinghouse (or its subsidiaries) or Toshiba Nuclear Energy Holdings (UK) Limited (or its subsidiaries), it will hold a portion of such payments in trust for the Vogtle Owners and promptly pay them as offsets against any remaining Guarantee Obligations. Under the Guarantee Settlement Agreement, the Vogtle Owners will forbear from exercising certain remedies, including drawing on the Westinghouse Letters of Credit, until June 30, 2020, unless certain events of nonpayment, insolvency, or other material breach of the Guarantee Settlement Agreement by Toshiba occur. If such an event occurs, the balance of the Guarantee Obligations will become immediately due and payable, and the Vogtle Owners may exercise any and all rights and remedies, including drawing on the Westinghouse Letters of Credit without restriction. In addition, the Guarantee Settlement Agreement does not restrict the Vogtle Owners from fully drawing on the Westinghouse Letters of Credit in the event they are not renewed or replaced prior to the expiration date. On October 2, 2017, Georgia Power received the first installment of the Guarantee Obligations of $300 million from Toshiba, of which Georgia Power's proportionate share was $137 million. Georgia Power is considering potential options with respect to its right to future payments under the Guarantee Settlement Agreement and its claims against the EPC Contractor in the EPC Contractor's bankruptcy proceeding, including a potential sale of those payment rights and bankruptcy claims. Any such transaction cannot be assured and would be subject to DOE consents and related approvals under the Loan Guarantee Agreement and related agreements.
On August 10, 2017, Toshiba released its financial results for the quarter ended June 30, 2017, which reflected a negative shareholders' equity balance of approximately $4.5 billion as of June 30, 2017. Toshiba previously announced the existence of material events and conditions that raise substantial doubt about Toshiba's ability to continue as a going concern. As a result, substantial risk regarding the Vogtle Owners' ability to fully collect the Guarantee Obligations continues to exist. An inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4 and, therefore, on Southern Company's financial statements.
Additionally, on June 9, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, and the EPC Contractor entered into the Services Agreement, which was amended and restated on July 20, 2017, for the EPC Contractor to transition construction management of Plant Vogtle Units 3 and 4 to Southern Nuclear and to provide ongoing design, engineering, and procurement services to Southern Nuclear. On July 20, 2017, the bankruptcy court approved the EPC Contractor's motion seeking authorization to (i) enter into the Services Agreement, (ii) assume and assign to the Vogtle Owners certain project-related contracts, (iii) join the Vogtle Owners as counterparties to certain assumed project-related contracts, and (iv) reject the Vogtle 3 and 4 Agreement. The Services Agreement, and the EPC Contractor's rejection of the Vogtle 3 and 4 Agreement, became effective upon approval by the DOE on July 27, 2017. The Services Agreement will continue until the start-up and testing of Plant Vogtle Units 3 and 4 is complete and electricity is generated and sold from both units. The Services Agreement is terminable by the Vogtle Owners upon 30 days' written notice.

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Effective October 23, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, entered into the BechtelVogtle Services Agreement, whereby BechtelWestinghouse provides facility design and engineering services, procurement and technical support, and staff augmentation on a time and materials cost basis. The Vogtle Services Agreement provides that it will serve ascontinue until the primary contractor for the remaining construction activities forstart-up and testing of Plant Vogtle Units 3 and 4. Facility design4 are complete and engineering remainselectricity
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is generated and sold from both units. The Vogtle Services Agreement is terminable by the responsibility ofVogtle Owners upon 30 days' written notice.
In October 2017, Georgia Power, acting for itself and as agent for the EPC Contractor underother Vogtle Owners, executed the Services Agreement. The Bechtel Agreement, is a cost reimbursable plus fee arrangement, wherebyunder which Bechtel will beis reimbursed for actual costs plus a base fee and an at-risk fee, which is subject to adjustment based on Bechtel's performance against cost and schedule targets. Each Vogtle Owner is severally (not jointly) liable for its proportionate share, based on its ownership interest, of all amounts owed to Bechtel under the Bechtel Agreement. The Vogtle Owners may terminate the Bechtel Agreement at any time for their convenience, provided that the Vogtle Owners will be required to pay amounts related to work performed prior to the termination (including the applicable portion of the base fee), certain termination-related costs, and, at certain stages of the work, the applicable portion of the at-risk fee. Bechtel may terminate the Bechtel Agreement under certain circumstances, including certain Vogtle Owner suspensions of work, certain breaches of the Bechtel Agreement by the Vogtle Owners, Vogtle Owner insolvency, and certain other events. Pursuant
See Note 8 to the financial statements under "Long-term Debt – DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K for information on the Amended and Restated Loan Guarantee Agreement, including applicable covenants, events of default, and mandatory prepayment events.
Cost and Schedule
Georgia Power's approximate proportionate share of the remaining estimated capital cost to complete Plant Vogtle Units 3 and 4, including contingency, through the end of the second quarter 2023 and the first quarter 2024, respectively, is as follows:
(in millions)
Base project capital cost forecast(a)(b)
$10,553 
Construction contingency estimate40 
Total project capital cost forecast(a)(b)
10,593 
Net investment at March 31, 2023(b)
(9,747)
Remaining estimate to complete$846
(a)Includes approximately $610 million of costs that are not shared with the other Vogtle Owners, including $33 million of construction monitoring costs approved for recovery by the Georgia PSC in its nineteenth VCM order,and approximately $407 million of incremental costs under the cost-sharing and tender provisions of the joint ownership agreements described below. Excludes financing costs expected to be capitalized through AFUDC of approximately $418 million, of which $334 million had been accrued through March 31, 2023.
(b)Net of $1.7 billion received from Toshiba under the Guarantee Settlement Agreement and approximately $188 million in related customer refunds.
Georgia Power is required to obtain the DOE's approval of the Bechtel Agreement prior to obtaining any further advances under the Loan Guarantee Agreement.
In connection with the recommendation to continue withestimates that its financing costs for construction of Plant Vogtle Units 3 and 4 (described below),will total approximately $3.5 billion, of which $3.3 billion had been incurred through March 31, 2023.
As part of its ongoing processes, Southern Nuclear continues to evaluate cost and schedule forecasts on a regular basis to incorporate current information available, particularly in the areas of start-up testing and related test results, engineering support, commodity installation, system turnovers, and workforce statistics. Southern Nuclear establishes aggressive target values for monthly construction production and system turnover activities, which are reflected in the site work plans.
Since March 2020, the number of active COVID-19 cases at the site has fluctuated consistent with the surrounding area and impacted productivity levels and pace of activity completion, with the site experiencing peaks in the number of active cases in January 2021, August 2021, and January 2022. Georgia Power estimates the productivity impacts of the COVID-19 pandemic have consumed approximately three to four months of schedule margin previously embedded in the site work plans. As of March 31, 2023, Georgia Power's proportionate share of the estimated incremental cost associated with COVID-19 mitigation actions and impacts on construction productivity is estimated to be between $160 million and $200 million and is included in the total project capital cost forecast. Future COVID-19 variants could further disrupt or delay construction and testing activities.
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On March 6, 2023, Unit 3 achieved self-sustaining nuclear fission, commonly referred to as initial criticality, and, on April 1, 2023, the generator successfully synchronized to the power grid and generated electricity for the first time. Operators continue to perform tests at various power levels to help ensure the reactor performs as designed, and Southern Nuclear continues to remediate various equipment and component issues as they are identified. Based on the expected duration of start-up testing, Unit 3 is projected to be placed in service during May or June 2023. Hot functional testing for Unit 4 commenced on March 20, 2023, with fuel load projected to occur in the third quarter 2023. Unit 4 is projected to be placed in service during late fourth quarter 2023 or the first quarter 2024.
During the first quarter 2023, established construction contingency totaling $20 million was assigned to the base capital cost forecast for costs primarily associated with additional craft and support resources.
The projected schedule for Unit 3 primarily depends on the progression of pre-operational testing and start-up, which may be impacted by further equipment, component, and/or other operational challenges. The projected schedule for Unit 4 primarily depends on potential impacts arising from Unit 4 testing activities overlapping with Unit 3 start-up and commissioning; maintaining overall construction productivity and production levels, particularly in subcontractor scopes of work; and maintaining appropriate levels of craft laborers. As Unit 4 completes construction and transitions further into testing, ongoing and potential future challenges include the duration of hot functional testing; the timeframe and duration of other testing; the pace and quality of remaining commodities installation; the completion of documentation to support ITAAC submittals; the pace of remaining work package closures and system turnovers; and the availability of craft, supervisory, and technical support resources. Ongoing or future challenges for both units also include management of contractors and vendors; subcontractor performance; and/or related cost escalation. New challenges also may continue to arise, as Unit 3 completes start-up and commissioning and Unit 4 moves further into testing and start-up, which may result in required engineering changes or remediation related to plant systems, structures, or components (some of which are based on new technology that only within the last few years began initial operation in the global nuclear industry at this scale). These challenges may result in further schedule delays and/or cost increases.
There have been technical and procedural challenges to the construction and licensing of Plant Vogtle Units 3 and 4 at the federal and state level and additional challenges may arise. Processes are in place that are designed to ensure compliance with the requirements specified in the Westinghouse Design Control Document and the combined construction and operating licenses, including inspections by Southern Nuclear and the NRC that occur throughout construction. With the receipt of the NRC's 103(g) finding in August 2022, Unit 3 is now subject to the NRC's operating reactor oversight process and must meet applicable technical and operational requirements contained in its operating license. Various design and other licensing-based compliance matters, including the timely submittal by Southern Nuclear of the ITAAC documentation and the related reviews and approvals by the NRC necessary to support NRC authorization to load fuel for Unit 4, may arise, which may result in additional license amendment requests or require other resolution. If any license amendment requests or other licensing-based compliance issues, including inspections and ITAACs for Unit 4, are not resolved in a timely manner, there may be delays in the project schedule that could result in increased costs.
The ultimate outcome of these matters cannot be determined at this time. However, any extension of the in-service date beyond the second quarter 2023 for Unit 3 or the first quarter 2024 for Unit 4, including the joint owner cost sharing and tender impacts described below, is estimated to result in additional base capital costs for Georgia Power of up to $15 million per month for Unit 3 and $35 million per month for Unit 4, as well as the related AFUDC and any additional related construction, support resources, or testing costs. While Georgia Power is not precluded from seeking retail recovery of any future capital cost forecast increase other than the amounts related to the cost-sharing and tender provisions of the joint ownership agreements described below, management will ultimately determine whether or not to seek recovery. Any further changes to the capital cost forecast that are not expected to be recoverable through regulated rates will be required to be charged to income and such charges could be material.
Joint Owner Contracts
In November 2017, the Vogtle Owners agreed on a term sheetentered into an amendment to amendtheir joint ownership agreements for Plant Vogtle Units 3 and 4 to provide for, among other conditions, additional Vogtle Owner approval requirements.
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Effective in August 2018, the existingVogtle Owners further amended the joint ownership agreements to clarify and provide procedures for additional Vogtle Owner approval requirements. Undercertain provisions of the term sheet,joint ownership agreements related to adverse events that require the vote of the holders of at least 90% of the ownership interests in Plant Vogtle Units 3 and 4 must vote to continue construction if certain adverse events occur, including (i) the bankruptcy of Toshiba or a material breach by Toshiba of the Guarantee Settlement Agreement; (ii) termination or rejection in bankruptcy of certain agreements, including the Services Agreement or the Bechtel Agreement; (iii) the Georgia PSC determines that any of Georgia Power's costs relating to the construction of Plant Vogtle Units 3(as amended, and 4 will not be recovered in retail rates because such costs are deemed unreasonable or imprudent; or (iv) an increase in the construction budget contained in the seventeenth VCM report by more than $1 billion or extension of the project schedule contained in the seventeenth VCM report by more than one year. In addition, under the term sheet, the required approval of holders of ownership interests in Plant Vogtle Units 3 and 4 is at least (i) 90% for a change of the primary construction contractor and (ii) 67% for material amendments to the Services Agreement or agreementstogether with the primary construction contractor or Southern Nuclear.
November 2017 amendment, the Vogtle Joint Ownership Agreements). The term sheetVogtle Joint Ownership Agreements also confirmsconfirm that the Vogtle Owners' sole recourse against Georgia Power or Southern Nuclear for any action or inaction in connection with their performance as agent for the Vogtle Owners is limited to removal of Georgia Power and/or Southern Nuclear as agent, except in cases of willful misconduct.
The ultimate outcome of these matters cannot be determined at this time.
Regulatory MattersAmendments to the Vogtle Joint Ownership Agreements
In 2009,connection with a September 2018 vote by the Vogtle Owners to continue construction, Georgia PSC votedPower entered into (i) a binding term sheet (Vogtle Owner Term Sheet) with the other Vogtle Owners and MEAG Power's wholly-owned subsidiaries MEAG Power SPVJ, LLC (MEAG SPVJ), MEAG Power SPVM, LLC (MEAG SPVM), and MEAG Power SPVP, LLC (MEAG SPVP) to certifytake certain actions which partially mitigate potential financial exposure for the other Vogtle Owners, including additional amendments to the Vogtle Joint Ownership Agreements and the purchase of PTCs from the other Vogtle Owners at pre-established prices, and (ii) a term sheet (MEAG Term Sheet) with MEAG Power and MEAG SPVJ to provide up to $300 million of funding with respect to MEAG SPVJ's ownership interest in Plant Vogtle Units 3 and 4 under certain circumstances. In January 2019, Georgia Power, MEAG Power, and MEAG SPVJ entered into an agreement to implement the provisions of the MEAG Term Sheet. In February 2019, Georgia Power, the other Vogtle Owners, and MEAG Power's wholly-owned subsidiaries MEAG SPVJ, MEAG SPVM, and MEAG SPVP entered into certain amendments to the Vogtle Joint Ownership Agreements to implement the provisions of the Vogtle Owner Term Sheet (Global Amendments).
Pursuant to the Global Amendments: (i) each Vogtle Owner must pay its proportionate share of qualifying construction costs for Plant Vogtle Units 3 and 4 based on its ownership percentage up to the estimated cost at completion (EAC) for Plant Vogtle Units 3 and 4, of which Georgia Power's share is $8.4 billion (VCM 19 Forecast Amount), plus $800 million; (ii) Georgia Power will be responsible for 55.7% of actual qualifying construction costs between $800 million and $1.6 billion over the VCM 19 Forecast Amount (resulting in $80 million of potential additional costs to Georgia Power), with the remaining Vogtle Owners responsible for 44.3% of such costs pro rata in accordance with their respective ownership interests; and (iii) Georgia Power will be responsible for 65.7% of qualifying construction costs between $1.6 billion and $2.1 billion over the VCM 19 Forecast Amount (resulting in a further $100 million of potential additional costs to Georgia Power), with the remaining Vogtle Owners responsible for 34.3% of such costs pro rata in accordance with their respective ownership interests. The Global Amendments provide that if the EAC is revised and exceeds the VCM 19 Forecast Amount by more than $2.1 billion, each of the other Vogtle Owners will have a one-time option at the time the project budget cost forecast is so revised to tender a portion of its ownership interest to Georgia Power in exchange for Georgia Power's agreement to pay 100% of such Vogtle Owner's remaining share of total construction costs in excess of the VCM 19 Forecast Amount plus $2.1 billion.
For purposes of the foregoing provisions, qualifying construction costs will not include costs (i) resulting from force majeure events, including epidemics and quarantines, governmental actions or inactions (or significant delays associated with issuance of such actions) that affect the licensing, completion, start-up, operations, or financing of Plant Vogtle Units 3 and 4, with a certified capital cost of $4.418 billion. In addition, in 2009 the Georgia PSC approved inclusion of the Plant Vogtle Units 3 and 4 related CWIP accounts in rate base, and the State of Georgia enacted the Georgia Nuclear Energy Financing Act, which allows Georgia Power to recover financing costs for nuclear construction projects certified by the Georgia PSC. Financing costs are recovered on all applicable certified costs through annual adjustments to the NCCR tariff by including the related CWIP accounts in rate base during the construction period. As of September 30, 2017, Georgia Power had recovered approximately $1.5 billion of financing costs. Georgia Power expects to file on November 1, 2017 to increase the NCCR tariff by approximately $90 million, effective January 1, 2018, pending Georgia PSC approval.
On December 20, 2016, the Georgia PSC voted to approve a settlement agreement (Vogtle Cost Settlement Agreement) resolving the following prudence matters: (i) none of the $3.3 billion of costs incurred through December 31, 2015 and reflected in the fourteenth VCM report will be disallowed from rate base on the basis of imprudence; (ii) the Contractor Settlement Agreement is reasonable and prudent and none of the amounts paidadministrative proceedings or to be paid pursuant to the Contractor Settlement Agreement should be disallowed from rate base on the basis of imprudence; (iii) financing costs on verified and approved capital costs will be deemed prudent provided they are

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incurred prior to December 31, 2019 and December 31, 2020 for Plant Vogtle Units 3 and 4, respectively; and (iv) (a) the in-service capital cost forecast will be adjusted to $5.680 billion (Revised Forecast), which includes a contingency of $240 million above Georgia Power's then current forecast of $5.440 billion, (b) capital costs incurred up to the Revised Forecast will be presumed to be reasonable and prudent with the burden of proof on any party challenging such costs, and (c) Georgia Power would have the burden to show that any capital costs above the Revised Forecast are reasonable and prudent. Under the terms of the Vogtle Cost Settlement Agreement, the certified in-service capital cost for purposes of calculating the NCCR tariff will remain at $4.418 billion. Construction capital costs above $4.418 billion will accrue AFUDC through the date each unit is placed in service. The ROE used to calculate the NCCR tariff was reduced from 10.95% (the ROE rate setting point authorized by the Georgia PSC in the 2013 ARP) to 10.00% effective January 1, 2016. For purposes of the AFUDC calculation, the ROE on costs between $4.418 billion and $5.440 billion will also be 10.00% and the ROE on any amounts above $5.440 billion would be Georgia Power's average cost of long-term debt. If the Georgia PSC adjusts Georgia Power's ROE rate setting point in a rate case prior to Plant Vogtle Units 3 and 4 being placed into retail rate base, then the ROE for purposes of calculating both the NCCR tariff and AFUDC will likewise be 95 basis points lower than the revised ROE rate setting point. If Plant Vogtle Units 3 and 4 are not placed in service by December 31, 2020, then (i) the ROE for purposes of calculating the NCCR tariff will be reduced an additional 300 basis points,litigation regarding ITAAC or $8 million per month, and may, at the Georgia PSC's discretion, be accrued to be used for the benefit of customers, until such time as the units are placed in service and (ii) the ROE used to calculate AFUDC will be Georgia Power's average cost of long-term debt.
The Georgia PSC has approved sixteen VCM reports covering the periods through December 31, 2016, including construction capital costs incurred, which through that date totaled $3.9 billion. Georgia Power filed its seventeenth VCM report, covering the period from January 1 through June 30, 2017, requesting approval of $542 million of construction capital costs incurred during that period, with the Georgia PSC on August 31, 2017.
In the seventeenth VCM report, Georgia Power recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and 4 is by November 2021 for Unit 3 and by November 2022 for Unit 4. Georgia Power's recommendation to go forward with completion of Vogtle Units 3 and 4 is based on the following assumptions about theother regulatory treatment of this recommendation, if the recommendation to go forward is adopted by the Georgia PSC: (i) that pursuant to Georgia law, the Georgia PSC in the seventeenth VCM proceeding approves the new cost and schedule forecast and finds that it is a reasonable basis for going forward, and that if the Georgia PSC disapproves all or part of the proposed cost and schedule revisions, Georgia Power may cancel Plant Vogtle Units 3 and 4 and recover its actual investment in Plant Vogtle Units 3 and 4; (ii) that the Vogtle Cost Settlement Agreement remains in full force and effect, including Georgia Power retaining the burden of proving all capital costs above $5.680 billion were prudent; (iii) that while the Georgia PSC will make no prudence finding in the seventeenth VCM proceeding, nor will the certified amount be amended consistent with the Vogtle Cost Settlement Agreement, the Georgia PSC recognizes that the certified amount is not a cap, and all costs that are approved and presumed or shown to be prudently incurred will be recoverable by Georgia Power; (iv) that Georgia Power is not a guarantor of the Toshiba Guarantee, and the failure of Toshiba to pay the Toshiba Guarantee, the failure of the U.S. Congress to extend the PTCs for Plant Vogtle Units 3 and 4, or the failure of the DOE to extend the Loan Guarantee Agreement with Georgia Power to reflect the increased capital amounts, will not reduce the amount of investment Georgia Power is otherwise allowed to collect; and (v) that as conditions change and assumptions are either proven or disproven, Georgia Power and the Georgia PSC may reconsider the decision to go forward. The Georgia PSC is expected to make a decision on these matters by February 6, 2018.
The ultimate outcome of these matters cannot be determined at this time.

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Revised Cost and Schedule
Georgia Power's approximate proportionate share of the remaining estimated cost to complete Plant Vogtle Units 3 and 4 is as follows:
 (in billions)
Estimated cost to complete$4.2
CWIP as of September 30, 20174.6
Guarantee Obligations(1.7)
Estimated capital costs$7.1
Vogtle Cost Settlement Agreement Revised Forecast(5.7)
Estimated net additional capital costs$1.4
Georgia Power's estimated financing costs during the construction period total approximately $3.4 billion, of which approximately $1.5 billion had been incurred through September 30, 2017.
Georgia Power's cancellation cost estimate results indicate that its proportionate share of the estimated costs to cancel both units is approximately $350 million. As a result, as of September 30, 2017, total estimated costs subject to evaluation by Georgia Power and the Georgia PSC in the event of a cancellation decision are as follows:
 Cancellation Cost Estimate
 (in billions)
CWIP as of September 30, 2017$4.6
Financing costs collected, net of tax1.5
Cancellation costs(*)
0.4
Guarantee Obligations(1.7)
Estimated net cancellation cost$4.8
(*)The estimate for cancellation costs includes, but is not limited to, costs to terminate contracts for construction and other services, as well as costs to secure the Plant Vogtle Units 3 and 4 construction site.
The Guarantee Obligations continue to exist in the event of cancellation. In addition, under Georgia law, prudently incurred costs related to certificated projects cancelled by the Georgia PSC are allowed recovery, including carrying costs, in future retail rates. Georgia Power will continue working with the Georgia PSC and the other Vogtle Owners to determine future actions related to Plant Vogtle Units 3 and 4, including, but not limited to, the status of construction and rate recovery.
The ultimate outcome of these matters cannot be determined at this time.
Other Matters
As of September 30, 2017, Georgia Power had borrowed $2.6 billion related to Plant Vogtle Units 3 and 4 costs through the Loan Guarantee Agreement and a multi-advance credit facility among Georgia Power, the DOE, and the FFB, which provides for borrowings of up to $3.46 billion, subject to the satisfaction of certain conditions. On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion in additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOE cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. See Note 6 to the financial statements of Southern Company under "DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information, including applicable covenants, events of default, mandatory prepayment events, and conditions to borrowing.

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The IRS has allocated PTCs to Plant Vogtle Units 3 and 4 which require that the applicable unit be placed in service prior to 2021. The net present value of Georgia Power's PTCs is estimated at approximately $400 million per unit.
There have been technical and procedural challenges to the construction and licensingcommencement of Plant Vogtle Units 3 and 4 at the federal and state level and additional challenges may arise while construction proceeds. Processes are in place that are designed to assure compliance with the requirements specified in the Westinghouse Design Control Document and the combined construction and operating licenses, including inspections by Southern Nuclear and the NRC that occur throughout construction. As a result of such compliance processes, certain license amendment requests have been filed and approved or are pending before the NRC. Various design and other licensing-based compliance matters, including the timely resolution of Inspections, Tests, Analyses, and Acceptance Criteria and the related approvals by the NRC, may arise while construction proceeds, which may result in additional license amendments or require other resolution. If any license amendment requests or other licensing-based compliance issues are not resolved in a timely manner, there may be delays in the project schedule that could result in increased costs.
While construction continues, the risk remains that challenges with management of contractors, subcontractors, and vendors, labor productivity, fabrication, delivery, assembly, and installation of plant systems, structures, and components, or other issues could arise and may further impact project schedule and cost.
The ultimate outcome of these matters cannot be determined at this time.
See RISK FACTORS of Southern Company in Item 1A of the Form 10-K for a discussion of certain risks associated with the licensing, construction, and operation of nuclear generating units, including potential impacts that could result from a major incident at a nuclear facility anywhere in the world. See additional risks in Item 1A herein regarding the EPC Contractor's bankruptcy.
Income Tax Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Income Tax Matters" of Southern Company in Item 7 of the Form 10-K and Note (G) to the Condensed Financial Statements herein for additional information.
Bonus Depreciation
Excluding the Kemper IGCC, approximately $830 million of positive cash flows is expected to result from bonus depreciation for the 2017 tax year. All projected tax benefits previously received for bonus depreciation related to the Kemper IGCC were repaid in connection with third quarter 2017 estimated tax payments. If the suspension of the Kemper IGCC start-up activities ultimately results in an abandonment for income tax purposes, the related deduction would be claimed in the year of the abandonment. See Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein and Note (G) to the Condensed Financial Statements herein for additional information. The ultimate outcome of this matter cannot be determined at this time.
Section 174 Research and Experimental Deduction
Southern Company has reflected deductions for R&E expenditures related to the Kemper IGCC in its federal income tax calculations since 2013 and filed amended federal income tax returns for 2008 through 2013 to also include such deductions. In December 2016, Southern Company and the IRS reached a proposed settlement, which was approved on September 8, 2017 by the U.S. Congress Joint Committee on Taxation (JCT), resolving a methodology for these deductions. As a result of the JCT approval, Southern Company recognized $176 million of previously unrecognized tax benefits and reversed $36 million of associated accrued interest. See Notes (B) and (G) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" and "Section 174 Research and Experimental Deduction," respectively, herein for additional information.

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Southern Power
During the third quarter 2017, Southern Power began a legal entity reorganization of various direct and indirect subsidiaries that own and operate solar facilities, including certain subsidiaries owned in partnership with various third parties. Southern Power's ownership interests in the various solar entities and facilities will not be affected by the reorganization. The reorganization is expected to result in estimated tax benefits totaling approximately $40 million that will be recorded in the fourth quarter 2017 related to certain changes in state apportionment rates and net operating loss carryforward utilization. The ultimate outcome of this matter cannot be determined at this time.
Other Matters
Southern Company and its subsidiaries are involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Southern Company and its subsidiaries are subject to certain claims and legal actions arising in the ordinary course of business. The business activities of Southern Company's subsidiaries are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements, such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions, CCR, and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.
The ultimate outcome of such pending or potential litigation or regulatory matters cannot be predicted at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Southern Company's financial statements. See Note (B) to the Condensed Financial Statements herein for a discussion of various other contingencies, regulatory matters, and other matters being litigated which may affect future earnings potential.
On January 20, 2017, a purported securities class action complaint was filed against Southern Company, certain of its officers, and certain former Mississippi Power officers in the U.S. District Court for the Northern District of Georgia, Atlanta Division, by Monroe County Employees' Retirement System on behalf of all persons who purchased shares of Southern Company's common stock between April 25, 2012 and October 29, 2013. The complaint alleges that Southern Company, certain of its officers, and certain former Mississippi Power officers made materially false and misleading statements regarding the Kemper IGCC in violation of certain provisions under the Securities Exchange Act of 1934, as amended. The complaint seeks, among other things, compensatory damages and litigation costs and attorneys' fees. On June 12, 2017, the plaintiffs filed an amended complaint that provided additional detail about their claims, increased the purported class period by one day, and added certain other former Mississippi Power officers as defendants. On July 27, 2017, the defendants filed a motion to dismiss the plaintiffs' amended complaint with prejudice, to which the plaintiffs filed an opposition on September 11, 2017.
On February 27, 2017, Jean Vineyard filed a shareholder derivative lawsuit in the U.S. District Court for the Northern District of Georgia that names as defendants Southern Company, certain of its directors, certain of its officers, and certain former Mississippi Power officers. The complaint alleges that the defendants caused Southern Company to make false or misleading statements regarding the Kemper IGCC cost and schedule. Further, the complaint alleges that the defendants were unjustly enriched and caused the waste of corporate assets. The plaintiff seeks to recover, on behalf of Southern Company, unspecified actual damages and, on her own behalf, attorneys' fees and costs in bringing the lawsuit. The plaintiff also seeks certain changes to Southern Company's corporate governance and internal processes. On March 27, 2017, the court deferred this lawsuit until 30 days after certain further action in the purported securities class action complaint discussed above.
On May 15, 2017, Helen E. Piper Survivor's Trust filed a shareholder derivative lawsuit in the Superior Court of Gwinnett County, State of Georgia and, on May 31, 2017, Judy Mesirov filed a shareholder derivative lawsuit in the U.S. District Court for the Northern District of Georgia. Each of these lawsuits names as defendants Southern Company, certain of its directors, certain of its officers, and certain former Mississippi Power officers. Each

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complaint alleges that the individual defendants, among other things, breached their fiduciary duties in connection with schedule delays and cost overruns associated with the construction of the Kemper IGCC. Each complaint further alleges that the individual defendants authorized or failed to correct false and misleading statements regarding the Kemper IGCC schedule and cost and failed to implement necessary internal controls to prevent harm to Southern Company. Each plaintiff seeks to recover, on behalf of Southern Company, unspecified actual damages and disgorgement of profits and, on its behalf, attorneys' fees and costs in bringing the lawsuit. Each plaintiff also seeks certain unspecified changes to Southern Company's corporate governance and internal processes. On August 15, 2017, these two shareholder derivative lawsuits were consolidated in the U.S. District Court for the Northern District of Georgia and the court deferred the consolidated case until 30 days after certain further action in the purported securities class action complaint discussed above.
Southern Company believes these legal challenges have no merit; however, an adverse outcome in any of these proceedings could have an impact on Southern Company's results of operations, financial condition, and liquidity. Southern Company will vigorously defend itself in these matters, the ultimate outcome of which cannot be determined at this time.
The SEC is conducting a formal investigation of Southern Company and Mississippi Power concerning the estimated costs and expected in-service date of the Kemper IGCC. Southern Company believes the investigation is focused primarily on periods subsequent to 2010 and on accounting matters, disclosure controls and procedures, and internal controls over financial reporting associated with the Kemper IGCC. See ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" herein for additional information on the Kemper IGCC. The ultimate outcome of this matter cannot be determined at this time; however, it is not expected to have a material impact on the financial statements of Southern Company.
ACCOUNTING POLICIES
Application of Critical Accounting Policies and Estimates
Southern Company prepares its consolidated financial statements in accordance with GAAP. Significant accounting policies are described in Note 1 to the financial statements of Southern Company in Item 8 of the Form 10-K. In the application of these policies, certain estimates are made that may have a material impact on Southern Company's results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" of Southern Company in Item 7 of the Form 10-K for a complete discussion of Southern Company's critical accounting policies and estimates related to Utility Regulation, Asset Retirement Obligations, Pension and Other Postretirement Benefits, Goodwill and Other Intangible Assets, Derivatives and Hedging Activities, and Contingent Obligations.
Kemper IGCC Rate Recovery
For periods prior to the second quarter 2017, significant accounting estimates included Kemper IGCC estimated construction costs, project completion date, and rate recovery. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Kemper IGCC Estimated Construction Costs, Project Completion Date, and Rate Recovery" of Southern Company in Item 7 of the Form 10-K for additional information. Mississippi Power recorded total pre-tax charges to income related to the Kemper IGCC of $428 million ($264 million after tax) in 2016, $365 million ($226 million after tax) in 2015, $868 million ($536 million after tax) in 2014, and $1.2 billion ($729 million after tax) in prior years.
As a result of the Mississippi PSC's June 21, 2017 stated intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant rather than an IGCC plant, as well as Mississippi Power's June 28, 2017 suspension of the operation and start-up of the gasifier portion of the Kemper IGCC, the estimated construction costs and project completion date are no longer considered significant accounting estimates. Significant accounting estimates

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for the September 30, 2017 financial statements presented herein include the overall assessment of rate recovery for the Kemper County energy facility and the estimated costs for the potential cancellation of the Kemper IGCC.
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs associated with the gasification portions of the plant and lignite mine. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which $0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimate for the combined cycle portion of the facility, as well as the 15% that was previously contracted to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistent with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.
In the aggregate, since the Kemper IGCC project started, Mississippi Power has incurred charges of $6.00 billion ($3.96 billion after tax) through September 30, 2017. Mississippi Power recorded total pre-tax charges to income for the estimated probable losses on the Kemper IGCC of $34 million ($21 million after tax) and $88 million ($54 million after tax) in the third quarter 2017 and the third quarter 2016, respectively, and total pre-tax charges of $3.2 billion ($2.2 billion after tax) and $222 million ($137 million after tax) year-to-date in 2017 and 2016, respectively.
Given the significant judgment involved in estimating the costs to cancel the gasifier portion of the Kemper IGCC, the ultimate rate recovery for the Kemper IGCC, including the $0.5 billion of combined cycle-related costs not yet in rates, and the impact on Southern Company's results of operations, Southern Company considers these items to be critical accounting estimates. See Note 3 to the financial statements of Southern Company under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Recently Issued Accounting Standards
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Southern Company in Item 7 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standard is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Southern Company expects most of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. The majority of Southern Company's revenue, including energy provided to customers, is from tariff offerings that provide electricity or natural gas without a defined

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contractual term, as well as longer-term contractual commitments, including PPAs and non-derivative natural gas asset management and optimization arrangements. Southern Company expects the adoption of ASC 606 will not result in a significant shift from the current timing of revenue recognition for such transactions.
Southern Company's ongoing evaluation of other revenue streams and related contracts includes unregulated sales to customers. Some revenue arrangements, such as certain PPAs, energy-related derivatives, and alternative revenue programs, are excluded from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on Southern Company's financial statements. In addition, the power and utilities industry continues to evaluate other specific industry issues, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Southern Company expects CIAC to be out of the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Southern Company intends to use the modified retrospective method of adoption effective January 1, 2018. Southern Company has also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in Southern Company's financial statements, Southern Company will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). ASU 2017-04 removes the requirement to compare the implied fair value of goodwill with the carrying amount as part of Step 2 of the goodwill impairment test. Under the new standard, the goodwill impairment loss will be measured as the excess of a reporting unit's carrying amount over its fair value, not exceeding the total amount of goodwill allocated to that reporting unit, which may increase the frequency of goodwill impairment charges if a future goodwill impairment test does not pass the Step 1 evaluation. ASU 2017-04 is effective prospectively for annual and interim periods beginning on or after December 15, 2019, and early adoption is permitted on testing dates after January 1, 2017. Southern Company is evaluating the standard and expects to early adopt ASU 2017-04 effective January 1, 2018.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Southern Company's operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Southern Company's financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for

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hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Southern Company is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Southern Company's financial statements.
FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY "Overview" of Southern Company in Item 7 of the Form 10-K for additional information. Southern Company's financial condition remained stable at September 30, 2017. Southern Company intends to continue to monitor its access to short-term and long-term capital markets as well as bank credit agreements to meet future capital and liquidity needs. See "Capital Requirements and Contractual Obligations," "Sources of Capital," and "Financing Activities" herein for additional information.
Net cash provided from operating activities totaled $5.3 billion for the first nine months of 2017, an increase of $1.0 billion from the corresponding period in 2016. The increase in net cash provided from operating activities was primarily due to an increase of $1.5 billion in net cash provided from operating activities of Southern Company Gas, which was acquired on July 1, 2016, partially offset by the timing of vendor payments. Net cash used for investing activities totaled $6.7 billion for the first nine months of 2017 primarily due to the traditional electric operating companies' installation of equipment to comply with environmental standards and construction of electric generation, transmission, and distribution facilities, capital expenditures for Southern Company Gas' infrastructure replacement programs, and Southern Power's renewable acquisitions. Net cash provided from financing activities totaled $1.3 billion for the first nine months of 2017 primarily due to net issuances of long-term and short-term debt, partially offset by common stock dividend payments. Cash flows from financing activities vary from period to period based on capital needs and the maturity or redemption of securities.
Significant balance sheet changes for the first nine months of 2017 include an increase of $1.3 billion in total property, plant, and equipment primarily related to the traditional electric operating companies' installation of equipment to comply with environmental standards and construction of electric generation, transmission, and distribution facilities, Southern Company Gas' infrastructure replacement programs, and Southern Power's renewable acquisitions, largely offset by the $2.9 billion write-down of the gasification portions of the Kemper IGCC; a decrease of $0.4 billion in income taxes receivable, current and unrecognized tax benefits primarily related to income tax refunds associated with deductible R&E expenditures; a decrease of $0.5 billion in acquisitions payable related to Southern Power; an increase of $2.3 billion in long-term debt (including amounts due within one year) primarily to fund the Southern Company system's continuous construction programs and for general corporate purposes; and a decrease of $0.7 billion in total common stockholder's equity primarily related to the estimated probable losses on the Kemper IGCC, partially offset by the issuance of additional shares of common stock.
At the end of the third quarter 2017, the market price of Southern Company's common stock was $49.14 per share (based on the closing price as reported on the New York Stock Exchange) and the book value was $23.99 per share, representing a market-to-book ratio of 205%, compared to $49.19, $25.00, and 197%, respectively, at the end of 2016. Southern Company's common stock dividend for the third quarter 2017 was $0.58 per share compared to $0.56 per share in the third quarter 2016.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS FINANCIAL CONDITION AND LIQUIDITY "Capital Requirements and Contractual Obligations" of Southern Company in Item 7 of the Form 10-K for a description of Southern Company's capital requirements for the construction programs of the Southern Company system, including estimated capital expenditures for new electric generating facilities and to comply with existing environmental statutes and regulations, scheduled maturities of long-term debt, as well as related interest, derivative

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obligations, preferred and preference stock dividends, leases, purchase commitments, pipeline charges, storage capacity, and gas supply, asset management agreements, standby letters of credit and performance/surety bonds, trust funding requirements, and unrecognized tax benefits. Subsequent to September 30, 2017, Alabama Power repaid at maturity $325 million aggregate principal amount of its Series Q 5.50% Senior Notes due October 15, 2017. An additional $3.2 billion will be required through September 30, 2018 to fund maturities of long-term debt. See "Sources of Capital" herein for additional information.
The construction programs are subject to periodic review and revision, and actual construction costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in load projections; changes in environmental statutes and regulations; the outcome of any legal challenges to the environmental rules; changes in electric generating plants, including unit retirements and replacements and adding or changing fuel sources at existing electric generating units, to meet regulatory requirements; changes in FERC rules and regulations; state regulatory agency approvals; changes in the expected environmental compliance program; changes in legislation; the cost and efficiency of construction labor, equipment, and materials; project scope and design changes; storm impacts; and the cost of capital. In addition, there can be no assurance that costs related to capital expenditures will be fully recovered. Additionally, planned expenditures for plant acquisitions may vary due to market opportunities and Southern Power's ability to execute its growth strategy. See Note 12 to the financial statements of Southern Company under "Southern Power" in Item 8 of the Form 10-K and Note (I) to the Condensed Financial Statements under "Southern Power" herein for additional information regarding Southern Power's plant acquisitions. See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Nuclear Construction" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerNuclear Construction" herein for information regarding additional factors that may impact construction expenditures, including Georgia Power's cost-to-complete and cancellation cost assessments for Plant Vogtle Units 3 and 4.
Sources of Capital
Southern Company intends to meet its future capital needs through operating cash flows, short-term debt, term loans, and external security issuances. Equity capital can be provided from any combination of Southern Company's stock plans, private placements, or public offerings. The amount and timing of additional equity capital and debt issuances in 2017, as well as in subsequent years, will be contingent on Southern Company's investment opportunities and the Southern Company system's capital requirements and will depend upon prevailing market conditions and other factors. See "Capital Requirements and Contractual Obligations" herein for additional information.
Except as described herein, the traditional electric operating companies, Southern Power, and Southern Company Gas plan to obtain the funds required for construction and other purposes from operating cash flows, external security issuances, term loans, short-term borrowings, and equity contributions or loans from Southern Company. In addition, Southern Power plans to utilize tax equity partnership contributions. However, the amount, type, and timing of any future financings, if needed, will depend upon prevailing market conditions, regulatory approval, and other factors. See MANAGEMENT'S DISCUSSION AND ANALYSIS FINANCIAL CONDITION AND LIQUIDITY "Sources of Capital" of Southern Company in Item 7 of the Form 10-K for additional information.
In addition, in 2014, Georgia Power entered into the Loan Guarantee Agreement with the DOE, under which the proceeds of borrowings may be used to reimburse Georgia Power for Eligible Project Costs incurred in connection with its construction of Plant Vogtle Units 3 and 4. Under the Loan Guarantee Agreement, the DOE agreed to guarantee borrowings of up to $3.46 billion (not to exceed 70% of (i) Eligible Project Costs, less (ii) amounts received from Toshiba under the Guarantee Settlement Agreement and amounts received from the Westinghouse bankruptcy proceeding) to be made by Georgia Power under a multi-advance credit facility (FFB Credit Facility) among Georgia Power, the DOE, and the FFB. As of September 30, 2017, Georgia Power had borrowed $2.6 billion under the FFB Credit Facility. On July 27, 2017, Georgia Power entered into an amendment to the Loan Guarantee Agreement, which provides that further advances are conditioned upon the DOE's approval of any agreements entered into in replacement of the Vogtle 3 and 4 Agreement and satisfaction of certain other conditions.

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On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion of additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOE cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. See Note 6 to the financial statements of Southern Company under "DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information regarding the Loan Guarantee Agreement, including applicable covenants, events of default, mandatory prepayment events, and additional conditions to borrowing. Also see Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerNuclear Construction" herein for additional information regarding Plant Vogtle Units 3 and 4.
As of September 30, 2017, Southern Company's current liabilities exceeded current assets by $3.4 billion due to long-term debt that is due within one year of $3.5 billion (comprised of approximately $1.0 billion at the parent company, $0.3 billion at Alabama Power, $0.3 billion at Georgia Power, $1.0 billion at Mississippi Power, and $0.9 billion at Southern Power) and notes payable of $2.6 billion (comprised of approximately $1.1 billion at the parent company, $0.4 billion at Georgia Power, $0.1 billion at Southern Power, and $0.9 billion at Southern Company Gas). To meet short-term cash needs and contingencies, the Southern Company system has substantial cash flow from operating activities and access to capital markets and financial institutions. Southern Company, the traditional electric operating companies, Southern Power, and Southern Company Gas intend to utilize operating cash flows, as well as commercial paper, lines of credit, bank notes, and securities issuances, as market conditions permit, as well as, under certain circumstances for the traditional electric operating companies, Southern Power, and Southern Company Gas, equity contributions and/or loans from Southern Company to meet their short-term capital needs.
At September 30, 2017, Southern Company and its subsidiaries had approximately $1.8 billion of cash and cash equivalents. Committed credit arrangements with banks at September 30, 2017 were as follows:
 Expires   
Executable Term
Loans
 Expires Within One Year
Company20172018201920202022 Total Unused 
One
Year
 
Two
Years
 
Term
Out
 
No Term
Out
 (in millions)
Southern Company(a)
$
$
$
$
$2,000
 $2,000
 $2,000
 $
 $
 $
 $
Alabama Power
35

500
800
 1,335
 1,335
 
 
 
 35
Georgia Power



1,750
 1,750
 1,732
 
 
 
 
Gulf Power30
195
25
30

 280
 280
 45
 
 
 40
Mississippi Power100




 100
 100
 
 
 
 100
Southern Power Company(b)




750
 750
 728
 
 
 
 
Southern Company Gas(c)




1,900
 1,900
 1,861
 
 
 
 
Other
30



 30
 30
 20
 
 20
 10
Southern Company Consolidated$130
$260
$25
$530
$7,200
 $8,145
 $8,066
 $65
 $
 $20
 $185
(a)Represents the Southern Company parent entity.
(b)
Does not include Southern Power's $120 million continuing letter of credit facility for standby letters of credit expiring in 2019, of which $111 million has been used for letters of credit and $9 million remains unused at September 30, 2017.
(c)
Southern Company Gas, as the parent entity, guarantees the obligations of Southern Company Gas Capital, which is the borrower of $1.2 billion of these arrangements. Southern Company Gas' committed credit arrangements also include $700 million for which Nicor Gas is the borrower and which is restricted for working capital needs of Nicor Gas.

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SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

See Note 6 to the financial statements of Southern Company under "Bank Credit Arrangements" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Bank Credit Arrangements" herein for additional information.
As reflected in the table above, in May 2017, Southern Company, Alabama Power, Georgia Power, and Southern Power Company each amended certain of their multi-year credit arrangements, which, among other things, extended the maturity dates from 2020 to 2022. Southern Company and Southern Power Company increased their borrowing ability under these arrangements to $2.0 billion from $1.25 billion and to $750 million from $600 million, respectively. Southern Company also terminated its $1.0 billion facility maturing in 2018. Also in May 2017, Southern Company Gas Capital and Nicor Gas terminated their existing credit arrangements for $1.3 billion and $700 million, respectively, which were to mature in 2017 and 2018, and entered into a new multi-year credit arrangement currently allocated for $1.2 billion and $700 million, respectively, with a maturity date of 2022. Pursuant to the new multi-year credit arrangement, the allocations may be adjusted. In September 2017, Alabama Power amended its $500 million multi-year credit arrangement, which, among other things, extended the maturity date from 2018 to 2020.
Most of these bank credit arrangements, as well as the term loan arrangements of Southern Company, Alabama Power, Georgia Power, Mississippi Power, and Southern Power Company, contain covenants that limit debt levels and contain cross-acceleration or cross-default provisions to other indebtedness (including guarantee obligations) that are restricted only to the indebtedness of the individual company. Such cross-default provisions to other indebtedness would trigger an event of default if the applicable borrower defaulted on indebtedness or guarantee obligations over a specified threshold. Such cross-acceleration provisions to other indebtedness would trigger an event of default if the applicable borrower defaulted on indebtedness, the payment of which was then accelerated. At September 30, 2017, Southern Company, the traditional electric operating companies, Southern Power Company, Southern Company Gas, and Nicor Gas were in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowings.
Subject to applicable market conditions, Southern Company and its subsidiaries expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, Southern Company and its subsidiaries may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
A portion of the unused credit with banks is allocated to provide liquidity support to the pollution control revenue bonds of the traditional electric operating companies and the commercial paper programs of Southern Company, the traditional electric operating companies, Southern Power Company, Southern Company Gas, and Nicor Gas. The amount of variable rate pollution control revenue bonds of the traditional electric operating companies outstanding requiring liquidity support as of September 30, 2017 was approximately $1.5 billion as compared to $1.9 billion at December 31, 2016. In June 2017, Georgia Power remarketed $318 million of variable rate pollution control bonds in index rate modes, reducing the liquidity support utilized under Georgia Power's bank credit arrangement. In addition, at September 30, 2017, the traditional electric operating companies had approximately $699 million of pollution control revenue bonds outstanding that were required to be remarketed within the next 12 months. Subsequent to September 30, 2017, $40 million of these pollution control revenue bonds of Georgia Power which were in an index rate mode were remarketed to the public in a long-term fixed rate mode.
Southern Company, the traditional electric operating companies (other than Mississippi Power), Southern Power Company, Southern Company Gas, and Nicor Gas make short-term borrowings primarily through commercial paper programs that have the liquidity support of the committed bank credit arrangements described above. Short-term borrowings are included in notes payable in the balance sheets.

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SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Details of short-term borrowings were as follows:
  Short-term Debt at September 30, 2017 
Short-term Debt During the Period(*)
  
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Average
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Maximum
Amount
Outstanding
  (in millions)   (in millions)   (in millions)
Commercial paper $1,725
 1.5% $1,895
 1.5% $2,284
Short-term bank debt 854
 2.0% 938
 2.1% 1,017
Total $2,579
 1.7% $2,833
 1.7%  
(*)Average and maximum amounts are based upon daily balances during the three-month period ended September 30, 2017.
Southern Company believes the need for working capital can be adequately met by utilizing commercial paper programs, lines of credit, bank term loans, and operating cash flows.
Credit Rating Risk
At September 30, 2017, Southern Company and its subsidiaries did not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change of certain subsidiaries to BBB and/or Baa2 or below. These contracts are for physical electricity and natural gas purchases and sales, fuel purchases, fuel transportation and storage, energy price risk management, transmission, and interest rate management.
The maximum potential collateral requirements under these contracts at September 30, 2017 were as follows:
Credit RatingsMaximum Potential
Collateral
Requirements
 (in millions)
At BBB and/or Baa2$38
At BBB- and/or Baa3$647
At BB+ and/or Ba1(*)
$2,352
(*)Any additional credit rating downgrades at or below BB- and/or Ba3 could increase collateral requirements up to an additional $38 million.
Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of Southern Company and its subsidiaries to access capital markets, and would be likely to impact the cost at which they do so.
On March 1, 2017, Moody's downgraded the senior unsecured debt rating of Mississippi Power to Ba1 from Baa3.
On March 20, 2017, Moody's revised its rating outlook for Georgia Power from stable to negative.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including the traditional electric operating companies, Southern Power, Southern Company Gas, Southern Company Gas Capital, and Nicor Gas) from stable to negative.
On March 30, 2017, Fitch placed the ratings of Southern Company, Georgia Power, and Mississippi Power on rating watch negative.
On June 22, 2017, Moody's placed the ratings of Mississippi Power on review for downgrade. On September 21, 2017, Moody's revised its rating outlook for Mississippi Power from under review to stable.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Financing Activities
During the first nine months of 2017, Southern Company issued approximately 10.6 million shares of common stock primarily through employee equity compensation plans and received proceeds of approximately $479 million.
In addition, during the second and third quarters of 2017, Southern Company issued a total of approximately 2.7 million shares of common stock through at-the-market issuances pursuant to sales agency agreements related to Southern Company's continuous equity offering program and received cash proceeds of approximately $134 million, net of $1.1 million in fees and commissions.
The following table outlines the long-term debt financing activities for Southern Company and its subsidiaries for the first nine months of 2017:
Company
Senior
Note Issuances
 
Senior
Note Maturities and Redemptions
 
Revenue
Bond
Maturities, Redemptions, and
Repurchases
 
Other
Long-Term
Debt
Issuances
 
Other
Long-Term
Debt Redemptions
and
Maturities(a)
 (in millions)
Southern Company(b)
$300
 $400
 $
 $500
 $400
Alabama Power550
 200
 36
 
 
Georgia Power1,350
 450
 65
 370
 13
Gulf Power300
 85
 
 6
 
Mississippi Power
 
 
 40
 893
Southern Power
 
 
 43
 4
Southern Company Gas(c)
450
 
 
 200
 22
Other
 
 
 
 12
Elimination(d)

 
 
 (40) (599)
Southern Company Consolidated$2,950
 $1,135
 $101
 $1,119
 $745
(a)Includes reductions in capital lease obligations resulting from cash payments under capital leases.
(b)Represents the Southern Company parent entity.
(c)
The senior notes were issued by Southern Company Gas Capital and guaranteed by the Southern Company Gas parent entity. Other long-term debt issued represents first mortgage bonds issued by Nicor Gas.
(d)Includes intercompany loans from Southern Company to Mississippi Power and reductions in affiliate capital lease obligations at Georgia Power. These transactions are eliminated in Southern Company's Consolidated Financial Statements.
In March 2017, Southern Company repaid at maturity a $400 million 18-month floating rate bank loan.
In June 2017, Southern Company issued $500 million aggregate principal amount of Series 2017A 5.325% Junior Subordinated Notes due June 21, 2057 and $300 million aggregate principal amount of Series 2017A Floating Rate Senior Notes due September 30, 2020, which bear interest at a floating rate based on three-month LIBOR. The proceeds were used to repay short-term indebtedness and for other general corporate purposes.
Also in June 2017, Southern Company entered into two $100 million aggregate principal amount floating rate bank term loan agreements, which mature on June 21, 2018 and June 29, 2018 and bear interest based on one-month LIBOR. The proceeds were used for working capital and other general corporate purposes.
In August 2017, Southern Company borrowed $250 million pursuant to an uncommitted bank credit arrangement, which bears interest at a rate agreed upon by Southern Company and the bank from time to time and is payable on no less than 30 days' demand by the bank. The proceeds were used for working capital and other general corporate purposes.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Also in August 2017, Southern Company repaid at maturity $400 million aggregate principal amount of Series 2014A 1.30% Senior Notes.
Except as described herein, Southern Company's subsidiaries used the proceeds of the debt issuances shown in the table above for their redemptions and maturities shown in the table above, to repay short-term indebtedness, and for general corporate purposes, including their continuous construction programs.
In September 2017, Alabama Power issued 10 million shares ($250 million aggregate stated capital) of 5.00% Class A Preferred Stock, Cumulative, Par Value $1 Per Share (Stated Capital $25 Per Share). The proceeds were used in October 2017 to redeem all 2 million shares ($50 million aggregate stated capital) of Alabama Power's 6.50% Series Preference Stock, 6 million shares ($150 million aggregate stated capital) of Alabama Power's 6.45% Series Preference Stock, and 1.52 million shares ($38 million aggregate stated capital) of Alabama Power's 5.83% Class A Preferred Stock and for other general corporate purposes, including Alabama Power's continuous construction program.
Subsequent to September 30, 2017, Alabama Power repaid at maturity $325 million aggregate principal amount of Series Q 5.50% Senior Notes due October 15, 2017.
In June 2017, Georgia Power entered into three floating rate bank loans in aggregate principal amounts of $50 million, $150 million, and $100 million, with maturity dates of December 1, 2017, May 31, 2018, and June 28, 2018, respectively, which bear interest based on one-month LIBOR. Also in June 2017, Georgia Power borrowed $500 million pursuant to an uncommitted bank credit arrangement, which bears interest at a rate agreed upon by Georgia Power and the bank from time to time and is payable on no less than 30 days' demand by the bank. The proceeds from these bank loans were used to repay a portion of Georgia Power's existing indebtedness and for working capital and other general corporate purposes, including Georgia Power's continuous construction program.
In August 2017, Georgia Power repaid its $50 million floating rate bank loan due December 1, 2017 and $250 million of the $500 million aggregate principal amount outstanding pursuant to its uncommitted bank credit arrangement. Also in August 2017, Georgia Power amended its $100 million floating rate bank loan to extend the maturity date from June 28, 2018 to October 26, 2018.
As reflected in the table above under other long-term debt issuances, in September 2017, Georgia Power issued $270 million aggregate principal amount of Series 2017A 5.00% Junior Subordinated Notes due October 1, 2077. The proceeds were used in October 2017 to redeem all 1.8 million shares ($45 million aggregate liquidation amount) of Georgia Power's 6.125% Series Class A Preferred Stock and 2.25 million shares ($225 million aggregate liquidation amount) of Georgia Power's 6.50% Series 2007A Preference Stock.
In March 2017, Gulf Power extended the maturity of a $100 million short-term floating rate bank loan bearing interest based on one-month LIBOR from April 2017 to October 2017 and subsequently repaid the loan in May 2017.
A portion of the proceeds of Gulf Power's senior note issuances was used in June 2017 to redeem 550,000 shares ($55 million aggregate liquidation amount) of Gulf Power's 6.00% Series Preference Stock, 450,000 shares ($45 million aggregate liquidation amount) of Gulf Power's Series 2007A 6.45% Preference Stock, and 500,000 shares ($50 million aggregate liquidation amount) of Gulf Power's Series 2013A 5.60% Preference Stock.
In June 2017, Mississippi Power prepaid $300 million of the outstanding principal amount under its $1.2 billion unsecured term loan, which matures on March 30, 2018.
In September 2017, Southern Power amended its $60 million aggregate principal amount floating rate bank loan to, among other things, increase the aggregate principal amount to $100 million and extend the maturity date from September 2017 to October 2018. The additional $40 million of proceeds were used to repay existing indebtedness and for other general corporate purposes.
In July 2017, Nicor Gas agreed to issue $400 million aggregate principal amount of first mortgage bonds in a private placement. On August 10, 2017, Nicor Gas issued $100 million aggregate principal amount of First Mortgage Bonds 3.03% Series due August 10, 2027 and $100 million aggregate principal amount of First Mortgage

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Bonds 3.62% Series due August 10, 2037. The proceeds were used to repay short-term indebtedness incurred under the Nicor Gas commercial paper program and for other working capital needs. The remaining $200 million is expected to be issued in November 2017.
In addition to any financings that may be necessary to meet capital requirements and contractual obligations, Southern Company and its subsidiaries plan to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.

PART I
Item 3. Quantitative and Qualitative Disclosures About Market Risk.
During the nine months ended September 30, 2017, there were no material changes to Southern Company's, Alabama Power's, Georgia Power's, Mississippi Power's, and Southern Power's disclosures about market risk. For additional market risk disclosures relating to Gulf Power and Southern Company Gas, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Market Price Risk" of Gulf Power and Southern Company Gas, respectively, herein. For an in-depth discussion of each registrant's market risks, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Market Price Risk" of each registrant in Item 7 of the Form 10-K and Note 1 to the financial statements of each registrant under "Financial Instruments," Note 11 to the financial statements of Southern Company, Alabama Power, and Georgia Power, Note 10 to the financial statements of Gulf Power, Mississippi Power, and Southern Company Gas, and Note 9 to the financial statements of Southern Power in Item 8 of the Form 10-K. Also see Note (C) and Note (H) to the Condensed Financial Statements herein for information relating to derivative instruments.
Item 4. Controls and Procedures.
(a)Evaluation of disclosure controls and procedures.
As of the end of the period covered by this Quarterly Report on Form 10-Q, Southern Company, Alabama Power, Georgia Power, Gulf Power, Mississippi Power, Southern Power, and Southern Company Gas conducted separate evaluations under the supervision and with the participation of each company's management, including the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures (as defined in Sections 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended). Based upon these evaluations, the Chief Executive Officer and the Chief Financial Officer, in each case, concluded that the disclosure controls and procedures are effective.
(b)Changes in internal controls over financial reporting.
There have been no changes in Southern Company's, Alabama Power's, Georgia Power's, Gulf Power's, Mississippi Power's, Southern Power's, or Southern Company Gas' internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended) during the third quarter 2017 that have materially affected or are reasonably likely to materially affect Southern Company's, Alabama Power's, Georgia Power's, Gulf Power's, Mississippi Power's, Southern Power's, or Southern Company Gas' internal control over financial reporting.

ALABAMA POWER COMPANY

ALABAMA POWER COMPANY
CONDENSED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Operating Revenues:       
Retail revenues$1,595
 $1,629
 $4,155
 $4,139
Wholesale revenues, non-affiliates77
 82
 210
 211
Wholesale revenues, affiliates18
 18
 83
 49
Other revenues50
 56
 158
 162
Total operating revenues1,740
 1,785
 4,606
 4,561
Operating Expenses:       
Fuel343
 410
 944
 973
Purchased power, non-affiliates57
 63
 132
 139
Purchased power, affiliates55
 41
 117
 129
Other operations and maintenance391
 348
 1,134
 1,097
Depreciation and amortization185
 177
 549
 524
Taxes other than income taxes93
 96
 284
 286
Total operating expenses1,124
 1,135
 3,160
 3,148
Operating Income616
 650
 1,446
 1,413
Other Income and (Expense):       
Allowance for equity funds used during construction11
 7
 27
 23
Interest expense, net of amounts capitalized(76) (77) (229) (224)
Other income (expense), net(5) (5) (8) (16)
Total other income and (expense)(70) (75) (210) (217)
Earnings Before Income Taxes546
 575
 1,236
 1,196
Income taxes216
 219
 493
 462
Net Income330
 356
 743
 734
Dividends on Preferred and Preference Stock5
 4
 14
 13
Net Income After Dividends on Preferred and Preference Stock$325
 $352
 $729
 $721

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Net Income$330
 $356
 $743
 $734
Other comprehensive income (loss):       
Qualifying hedges:       
Changes in fair value, net of tax of $-, $-, $-, and $(1), respectively
 
 
 (2)
Reclassification adjustment for amounts included in net income,
net of tax of $1, $1, $2, and $2, respectively
1
 1
 3
 3
Total other comprehensive income (loss)1
 1
 3
 1
Comprehensive Income$331
 $357
 $746
 $735
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

ALABAMA POWER COMPANY
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Nine Months Ended September 30,
 2017 2016
 (in millions)
Operating Activities:   
Net income$743
 $734
Adjustments to reconcile net income to net cash provided from operating activities —   
Depreciation and amortization, total666
 634
Deferred income taxes260
 267
Allowance for equity funds used during construction(27) (23)
Pension, postretirement, and other employee benefits(4) (14)
Other, net43
 (12)
Changes in certain current assets and liabilities —   
-Receivables(163) (4)
-Fossil fuel stock34
 18
-Other current assets(58) (46)
-Accounts payable(125) (113)
-Accrued taxes159
 207
-Accrued compensation(48) (22)
-Retail fuel cost over recovery(76) (104)
-Other current liabilities7
 19
Net cash provided from operating activities1,411
 1,541
Investing Activities:   
Property additions(1,211) (947)
Nuclear decommissioning trust fund purchases(174) (275)
Nuclear decommissioning trust fund sales174
 275
Cost of removal, net of salvage(82) (70)
Change in construction payables105
 (37)
Other investing activities(29) (28)
Net cash used for investing activities(1,217) (1,082)
Financing Activities:   
Proceeds —   
Senior notes550
 400
Capital contributions from parent company337
 253
Preferred stock250
 
Other long-term debt
 45
Redemptions —

 
Pollution control revenue bonds(36) 
Senior notes(200) (200)
Payment of common stock dividends(536) (574)
Other financing activities(26) (21)
Net cash provided from (used for) financing activities339
 (97)
Net Change in Cash and Cash Equivalents533
 362
Cash and Cash Equivalents at Beginning of Period420
 194
Cash and Cash Equivalents at End of Period$953
 $556
Supplemental Cash Flow Information:   
Cash paid (received) during the period for —   
Interest (net of $10 and $8 capitalized for 2017 and 2016, respectively)$217
 $215
Income taxes, net146
 (70)
Noncash transactions — Accrued property additions at end of period189
 84
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

ALABAMA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Assets At September 30, 2017 At December 31, 2016
  (in millions)
Current Assets:    
Cash and cash equivalents $953
 $420
Receivables —    
Customer accounts receivable 428
 348
Unbilled revenues 149
 146
Other accounts and notes receivable 47
 27
Affiliated 45
 40
Accumulated provision for uncollectible accounts (8) (10)
Fossil fuel stock 171
 205
Materials and supplies 455
 435
Prepaid expenses 58
 34
Other regulatory assets, current 122
 149
Other current assets 5
 11
Total current assets 2,425
 1,805
Property, Plant, and Equipment:    
In service 26,619
 26,031
Less: Accumulated provision for depreciation 9,463
 9,112
Plant in service, net of depreciation 17,156
 16,919
Nuclear fuel, at amortized cost 314
 336
Construction work in progress 928
 491
Total property, plant, and equipment 18,398
 17,746
Other Property and Investments:    
Equity investments in unconsolidated subsidiaries 65
 66
Nuclear decommissioning trusts, at fair value 869
 792
Miscellaneous property and investments 121
 112
Total other property and investments 1,055
 970
Deferred Charges and Other Assets:    
Deferred charges related to income taxes 525
 525
Deferred under recovered regulatory clause revenues 17
 150
Other regulatory assets, deferred 1,191
 1,157
Other deferred charges and assets 178
 163
Total deferred charges and other assets 1,911
 1,995
Total Assets $23,789
 $22,516
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.


ALABAMA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's Equity At September 30, 2017 At December 31, 2016
  (in millions)
Current Liabilities:    
Securities due within one year $325
 $561
Accounts payable —    
Affiliated 275
 297
Other 376
 433
Customer deposits 92
 88
Accrued taxes —    
Accrued income taxes 115
 45
Other accrued taxes 128
 42
Accrued interest 75
 78
Accrued compensation 151
 193
Other regulatory liabilities, current 4
 85
Other current liabilities 50
 76
Total current liabilities 1,591
 1,898
Long-term Debt 7,083
 6,535
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 4,919
 4,654
Deferred credits related to income taxes 60
 65
Accumulated deferred ITCs 118
 110
Employee benefit obligations 289
 300
Asset retirement obligations 1,564
 1,503
Other cost of removal obligations 630
 684
Other regulatory liabilities, deferred 93
 100
Other deferred credits and liabilities 51
 63
Total deferred credits and other liabilities 7,724
 7,479
Total Liabilities 16,398
 15,912
Redeemable Preferred Stock 329
 85
Preference Stock 196
 196
Common Stockholder's Equity:    
Common stock, par value $40 per share —    
Authorized — 40,000,000 shares    
Outstanding — 30,537,500 shares 1,222
 1,222
Paid-in capital 2,961
 2,613
Retained earnings 2,711
 2,518
Accumulated other comprehensive loss (28) (30)
Total common stockholder's equity 6,866
 6,323
Total Liabilities and Stockholder's Equity $23,789
 $22,516
The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

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ALABAMA POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS



THIRD QUARTER 2017 vs. THIRD QUARTER 2016
AND
YEAR-TO-DATE 2017 vs. YEAR-TO-DATE 2016


OVERVIEW
Alabama Power operates as a vertically integrated utility providing electric service to retail and wholesale customers within its traditional service territory located in the State of Alabama in addition to wholesale customers in the Southeast.
Many factors affect the opportunities, challenges, and risks of Alabama Power's business of providing electric service. These factors include the ability to maintain a constructive regulatory environment, to maintain and grow energy sales, and to effectively manage and secure timely recovery of costs. These costs include those related to projected long-term demand growth, stringent environmental standards, reliability, fuel, capital expenditures, and restoration following major storms. Alabama Power has various regulatory mechanisms that operate to address cost recovery. Effectively operating pursuant to these regulatory mechanisms and appropriately balancing required costs and capital expenditures with customer prices will continue to challenge Alabama Power for the foreseeable future.
Alabama Power continues to focus on several key performance indicators including, but not limited to, customer satisfaction, plant availability, system reliability, and net income after dividends on preferred and preference stock.
RESULTS OF OPERATIONS
Net Income
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions)
(% change)
(change in millions)
(% change)
$(27) (7.7) $8 1.1
Alabama Power's net income after dividends on preferred and preference stock for the third quarter 2017 was $325 million compared to $352 million for the corresponding period in 2016. The decrease was primarily related to a decrease in retail revenues associated with milder weather and lower customer usage in the third quarter 2017 compared to the corresponding period in 2016 and an increase in non-fuel operations and maintenance expenses. The decrease was partially offset by an increase in rates under Rate RSE effective January 1, 2017.
Alabama Power's net income after dividends on preferred and preference stock for year-to-date 2017 was $729 million compared to $721 million for the corresponding period in 2016. The increase was primarily related to an increase in rates under Rate RSE effective January 1, 2017, partially offset by a decrease in retail revenues associated with milder weather and lower customer usage for year-to-date 2017 compared to the corresponding period in 2016, and an increase in non-fuel operations and maintenance expenses.
Retail Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(34) (2.1) $16 0.4
In the third quarter 2017, retail revenues were $1.60 billion compared to $1.63 billion for the corresponding period in 2016. For year-to-date 2017, retail revenues were $4.16 billion compared to $4.14 billion for the corresponding period in 2016.

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ALABAMA POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS



Details of the changes in retail revenues were as follows:
 Third Quarter 2017
Year-to-Date 2017
 (in millions)
(% change)
(in millions)
(% change)
Retail – prior year$1,629
   $4,139
  
Estimated change resulting from –       
Rates and pricing85
 5.2
 240
 5.8
Sales decline(18) (1.1) (31) (0.7)
Weather(50) (3.1) (116) (2.8)
Fuel and other cost recovery(51) (3.1) (77) (1.9)
Retail – current year$1,595
 (2.1)% $4,155
��0.4%
Revenues associated with changes in rates and pricing increased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016 primarily due to an increase in rates under Rate RSE effective January 1, 2017. See Note 3 to the financial statements of Alabama Power under "Retail Regulatory Matters" in Item 8 of the Form 10-K for additional information.
Revenues attributable to changes in sales decreased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016. Weather-adjusted residential KWH sales decreased 2.4% and 1.1% for the third quarter and year-to-date 2017, respectively, primarily due to lower customer usage resulting from an increase in penetration of energy efficient residential appliances, partially offset by customer growth. Weather-adjusted commercial KWH sales decreased 2.3% and 1.4% for the third quarter and year-to-date 2017, respectively, primarily due to lower customer usage resulting from customer initiatives in energy savings and an ongoing migration to the electronic commerce business model, partially offset by customer growth. Industrial KWH sales increased 1.8% and 0.6% for the third quarter and year-to-date 2017, respectively, as a result of an increase in demand resulting from changes in production levels primarily in the primary metals, chemicals, and mining sectors, partially offset by a decrease in demand from the pipeline sector.
Revenues resulting from changes in weather decreased in the third quarter and year-to-date 2017 due to milder weather experienced in Alabama Power's service territory compared to the corresponding periods in 2016. For the third quarter 2017, the resulting decreases were 5.1% and 2.4% for residential and commercial sales revenues, respectively. For year-to-date 2017, the resulting decreases were 5.2% and 1.8% for residential and commercial sales revenues, respectively.
Fuel and other cost recovery revenues decreased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016 primarily due to a decrease in KWH generation and a decrease in the average cost of fuel. Electric rates include provisions to recognize the full recovery of fuel costs, purchased power costs, PPAs certificated by the Alabama PSC, and costs associated with the natural disaster reserve. Under these provisions, fuel and other cost recovery revenues generally equal fuel and other cost recovery expenses and do not affect net income. See Note 3 to the financial statements of Alabama Power under "Retail Regulatory Matters" in Item 8 of the Form 10-K for additional information.
Wholesale Revenues Affiliates
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$—  $34 69.4
Wholesale revenues from sales to affiliated companies will vary depending on demand and the availability and cost of generating resources at each company. These affiliate sales are made in accordance with the IIC, as approved by the FERC. These transactions do not have a significant impact on earnings since this energy is generally sold at

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marginal cost and energy purchases are generally offset by energy revenues through Alabama Power's energy cost recovery clauses.
For year-to-date 2017, wholesale revenues from sales to affiliates were $83 million compared to $49 million for the corresponding period in 2016. The increase was primarily due to a 52% increase in KWH sales as a result of supporting Southern Company system transmission reliability and an 11% increase in the price of energy due to an increase in natural gas prices.
Other Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(6) (10.7) $(4) (2.5)
In the third quarter 2017, other revenues were $50 million compared to $56 million for the corresponding period in 2016. The decrease was primarily due to lower open access transmission tariff revenues as a result of rate adjustments.
Fuel and Purchased Power Expenses
 Third Quarter 2017
vs.
Third Quarter 2016
 Year-to-Date 2017
vs.
Year-to-Date 2016
 (change in millions)
(% change) (change in millions) (% change)
Fuel$(67) (16.3) $(29) (3.0)
Purchased power – non-affiliates(6) (9.5) (7) (5.0)
Purchased power – affiliates14
 34.1 (12) (9.3)
Total fuel and purchased power expenses$(59)   $(48)  
In the third quarter 2017, fuel and purchased power expenses were $455 million compared to $514 million for the corresponding period in 2016. The decrease was primarily due to a $43 million net decrease related to the volume of KWHs generated and purchased and a $16 million decrease related to the average cost of fuel.
For year-to-date 2017, fuel and purchased power expenses were $1.19 billion compared to $1.24 billion for the corresponding period in 2016. The decrease was primarily due to a $53 million decrease in the volume of KWHs purchased and a $34 million decrease related to the average cost of fuel. This decrease was partially offset by a $35 million increase in the average cost of purchased power.
Fuel and purchased power energy transactions do not have a significant impact on earnings since energy expenses are generally offset by energy revenues through Alabama Power's energy cost recovery clause. See Note 3 to the financial statements of Alabama Power under "Retail Regulatory Matters – Rate ECR" in Item 8 of the Form 10-K for additional information.

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Details of Alabama Power's generation and purchased power were as follows:
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017
Year-to-Date 2016
Total generation (in billions of KWHs)
16 18 46 46
Total purchased power (in billions of KWHs)
2 2 5 6
Sources of generation (percent) —
       
Coal52 59 49 51
Nuclear24 22 25 24
Gas19 18 20 19
Hydro5 1 6 6
Cost of fuel, generated (in cents per net KWH) 
       
Coal2.61 2.73 2.61 2.80
Nuclear0.75 0.77 0.75 0.78
Gas2.72 2.85 2.74 2.62
Average cost of fuel, generated (in cents per net KWH)(a)
2.17 2.32 2.15 2.25
Average cost of purchased power (in cents per net KWH)(b)
5.65 5.70 5.57 4.81
(a)
KWHs generated by hydro are excluded from the average cost of fuel, generated.
(b)
Average cost of purchased power includes fuel, energy, and transmission purchased by Alabama Power for tolling agreements where power is generated by the provider.
Fuel
In the third quarter 2017, fuel expense was $343 million compared to $410 million for the corresponding period in 2016. The decrease was primarily due to an 18.4% decrease in the volume of KWHs generated by coal, a 4.6% decrease in the average cost of natural gas per KWH generated, which excludes fuel associated with tolling agreements, and a 4.4% decrease in average cost of coal per KWH generated. In addition, there was a 194.0% increase in the volume of KWHs generated by hydro facilities as a result of significantly more rainfall in 2017.
For year-to-date 2017, fuel expense was $944 million compared to $973 million for the corresponding period in 2016. The decrease was primarily due to a 6.8% decrease in the average cost of coal per KWH generated and a 2.0% decrease in the volume of KWHs generated by coal. The decrease was partially offset by a 4.8% increase in the volume of KWHs generated by natural gas and a 4.6% increase in the average cost of natural gas per KWH generated, which excludes fuel associated with tolling agreements.
Purchased Power – Affiliates
In the third quarter 2017, purchased power expense from affiliates was $55 million compared to $41 million for the corresponding period in 2016. The increase was primarily related to a 55.2% increase in the amount of energy purchased due to an increase in plant outages and increased purchases from Southern Electric Generating Company (SEGCO). The increase was partially offset by a 14.5% decrease in the average cost per KWH of capacity and energy at SEGCO. See Note 4 to the financial statements of Alabama Power in Item 8 of the Form 10-K for additional information.
For year-to-date 2017, purchased power expense from affiliates was $117 million compared to $129 million for the corresponding period in 2016. The decrease was primarily related to a 26.6% decrease in the amount of energy purchased due to a decrease in demand as a result of milder weather in 2017, partially offset by a 22.9% increase in the average cost of purchased power per KWH as a result of higher natural gas prices.

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Energy purchases from affiliates will vary depending on demand for energy and the availability and cost of generating resources at each company within the Southern Company system. These purchases are made in accordance with the IIC or other contractual agreements, as approved by the FERC.
Other Operations and Maintenance Expenses
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$43 12.4 $37 3.4
In the third quarter 2017, other operations and maintenance expenses were $391 million compared to $348 million for the corresponding period in 2016. The increase was primarily due to increases of $26 million in scheduled generation outage costs, $11 million in vegetation management costs, and $3 million in employee compensation and benefit costs, including pension costs.
For year-to-date 2017, other operations and maintenance expenses were $1.13 billion compared to $1.10 billion for the corresponding period in 2016. The increase was primarily due to increases of $31 million in vegetation management costs, $10 million in nuclear generation plant improvement costs, and $7 million in employee compensation and benefit costs, including pension costs, partially offset by an $11 million decrease in contract services.
Depreciation and Amortization
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$8 4.5 $25 4.8
In the third quarter 2017, depreciation and amortization was $185 million compared to $177 million for the corresponding period in 2016. For year-to-date 2017, depreciation and amortization was $549 million compared to $524 million for the corresponding period in 2016. These increases were primarily due to additional plant in service and an increase in depreciation rates, effective January 1, 2017, associated with compliance-related steam projects and asset retirement obligation recovery, partially offset by a decrease in distribution-related depreciation rates. See Note 1 to the financial statements of Alabama Power under "Depreciation and Amortization" in Item 8 of the Form 10-K for additional information.
Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(3) (1.4) $31 6.7
For year-to-date 2017, income taxes were $493 million compared to $462 million for the corresponding period in 2016. The increase was primarily due to higher pre-tax earnings, unrecognized tax benefits related to certain state deductions for federal income taxes, and prior year tax return actualization.
FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Alabama Power's future earnings potential. The level of Alabama Power's future earnings depends on numerous factors that affect the opportunities, challenges, and risks of Alabama Power's primary business of providing electric service. These factors include Alabama Power's ability to maintain a constructive regulatory environment that continues to allow for the timely recovery of prudently-incurred costs during a time of increasing costs and limited projected demand growth over the next several years. Future earnings will be driven primarily by customer growth. Earnings will also depend upon

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maintaining and growing sales, considering, among other things, the adoption and/or penetration rates of increasingly energy-efficient technologies and increasing volumes of electronic commerce transactions. Earnings are subject to a variety of other factors. These factors include weather, competition, new energy contracts with other utilities, energy conservation practiced by customers, the use of alternative energy sources by customers, the price of electricity, the price elasticity of demand, and the rate of economic growth or decline in Alabama Power's service territory. Demand for electricity is primarily driven by the pace of economic growth that may be affected by changes in regional and global economic conditions, which may impact future earnings. Current proposals related to potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals is dependent on the final form of any legislation enacted and the related transition rules and cannot be determined at this time, but could have a material impact on Alabama Power's financial statements. For additional information relating to these issues, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL of Alabama Power in Item 7 of the Form 10-K.
Environmental Matters
Compliance costs related to federal and state environmental statutes and regulations could affect earnings if such costs cannot continue to be fully recovered in rates on a timely basis. Environmental compliance spending over the next several years may differ materially from the amounts estimated. The timing, specific requirements, and estimated costs could change as environmental statutes and regulations are adopted or modified, as compliance plans are revised or updated, and as legal challenges to rules are completed. Environmental compliance costs are recovered through Rate CNP Compliance. See Note 3 to the financial statements of Alabama Power under "Retail Regulatory Matters – Rate CNP Compliance" in Item 8 of the Form 10-K for additional information. Further, higher costs that are recovered through regulated rates could contribute to reduced demand for electricity, which could negatively affect results of operations, cash flows, and financial condition. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Environmental Matters" of Alabama Power in Item 7 and Note 3 to the financial statements of Alabama Power under "Environmental Matters" in Item 8 of the Form 10-K for additional information.
Environmental Statutes and Regulations
Water Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Water Quality" of Alabama Power in Item 7 of the Form 10-K for additional information regarding the final effluent guidelines rule and the final rule revising the regulatory definition of waters of the U.S. for all Clean Water Act (CWA) programs.
On April 25, 2017, the EPA published a notice announcing it would reconsider the effluent guidelines rule, which had been finalized in November 2015. On September 18, 2017, the EPA published a final rule establishing a stay of the compliance deadlines for certain effluent limitations and pretreatment standards under the rule.
On June 27, 2017, the EPA and the U.S. Army Corps of Engineers proposed to rescind the final rule that revised the regulatory definition of waters of the U.S. for all CWA programs. The final rule has been stayed since October 2015 by the U.S. Court of Appeals for the Sixth Circuit.
The ultimate outcome of these matters cannot be determined at this time.
Global Climate Issues
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Global Climate Issues" of Alabama Power in Item 7 of the Form 10-K for additional information.
On March 28, 2017, the U.S. President signed an executive order directing agencies to review actions that potentially burden the development or use of domestically produced energy resources. The executive order

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specifically directs the EPA to review the Clean Power Plan and final greenhouse gas emission standards for new, modified, and reconstructed electric generating units and, if appropriate, take action to suspend, revise, or rescind those rules. On October 16, 2017, the EPA published a proposed rule to repeal the Clean Power Plan. The EPA has not determined whether or when it will promulgate a replacement rule.
On June 1, 2017, the U.S. President announced that the United States will withdraw from the non-binding Paris Agreement and begin renegotiation of its terms.
The ultimate outcome of these matters cannot be determined at this time.
FERC Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters" of Alabama Power in Item 7 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' (including Alabama Power's) and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies (including Alabama Power) and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' (including Alabama Power's) and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' (including Alabama Power's) and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies (including Alabama Power) and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017 order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies (including Alabama Power) and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Retail Regulatory Matters
Alabama Power's revenues from regulated retail operations are collected through various rate mechanisms subject to the oversight of the Alabama PSC. Alabama Power currently recovers its costs from the regulated retail business primarily through Rate RSE, Rate CNP, Rate ECR, and Rate NDR. In addition, the Alabama PSC issues accounting orders to address current events impacting Alabama Power. See Notes 1 and 3 to the financial statements of Alabama Power under "Nuclear Outage Accounting Order" and "Retail Regulatory Matters," respectively, in Item 8 of the Form 10-K for additional information regarding Alabama Power's rate mechanisms and accounting orders. The recovery balance of each regulatory clause for Alabama Power is reported in Note (B) to the Condensed Financial Statements herein.
Other Matters
Alabama Power is involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Alabama Power is subject to certain claims and legal actions arising in the ordinary course of business. Alabama Power's business activities are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements, such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions, CCR, and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.

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The ultimate outcome of such pending or potential litigation or regulatory matters cannot be predicted at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Alabama Power's financial statements. See Note (B) to the Condensed Financial Statements herein for a discussion of various other contingencies, regulatory matters, and other matters being litigated which may affect future earnings potential.
ACCOUNTING POLICIES
Application of Critical Accounting Policies and Estimates
Alabama Power prepares its financial statements in accordance with GAAP. Significant accounting policies are described in Note 1 to the financial statements of Alabama Power in Item 8 of the Form 10-K. In the application of these policies, certain estimates are made that may have a material impact on Alabama Power's results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" of Alabama Power in Item 7 of the Form 10-K for a complete discussion of Alabama Power's critical accounting policies and estimates related to Utility Regulation, Asset Retirement Obligations, Pension and Other Postretirement Benefits, and Contingent Obligations.
Recently Issued Accounting Standards
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Alabama Power in Item 7 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standard is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Alabama Power expects most of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. The majority of Alabama Power's revenue, including energy provided to customers, is from tariff offerings that provide electricity without a defined contractual term, as well as longer-term contractual commitments, including PPAs. Alabama Power expects that the revenue from contracts with these customers will not result in a significant shift in the timing of revenue recognition for such sales.
Alabama Power's ongoing evaluation of other revenue streams and related contracts includes unregulated sales to customers. Some revenue arrangements, such as alternative revenue programs, are excluded from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on Alabama Power's financial statements, if material. In addition, the power and utilities industry continues to evaluate other specific industry issues, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Alabama Power expects CIAC to be out of the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Alabama Power intends to use the modified retrospective method of adoption effective January 1, 2018. Alabama Power has also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-

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effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in Alabama Power's financial statements, Alabama Power will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Alabama Power's operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Alabama Power's financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Alabama Power is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Alabama Power's financial statements.
FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Overview" of Alabama Power in Item 7 of the Form 10-K for additional information. Alabama Power's financial condition remained stable at September 30, 2017. Alabama Power intends to continue to monitor its access to short-term and long-term capital markets as well as its bank credit arrangements to meet future capital and liquidity needs. See "Capital Requirements and Contractual Obligations," "Sources of Capital," and "Financing Activities" herein for additional information.
Net cash provided from operating activities totaled $1.4 billion for the first nine months of 2017, a decrease of $130 million as compared to the first nine months of 2016. The decrease in net cash provided from operating activities was primarily due to the receipt of income tax refunds in 2016 as a result of bonus depreciation. Net cash used for investing activities totaled $1.2 billion for the first nine months of 2017 primarily due to gross property additions related to distribution, environmental, transmission, and steam generation. Net cash provided from financing activities totaled $339 million for the first nine months of 2017 primarily due to an issuance of long-term debt and preferred stock and additional capital contributions from Southern Company, partially offset by common stock dividend payments and a redemption of long-term debt. Fluctuations in cash flows from financing activities vary from period to period based on capital needs and the maturity or redemption of securities.
Significant balance sheet changes for the first nine months of 2017 include increases of $652 million in property, plant, and equipment primarily due to additions to distribution, transmission, and steam generation, $548 million in long-term debt primarily due to the issuance of additional senior notes, $533 million in cash and cash equivalents, $348 million in additional paid-in capital due to capital contributions from Southern Company, $265 million in

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accumulated deferred income taxes primarily due to bonus depreciation, and $244 million in redeemable preferred stock primarily due to the September 2017 issuance, as well as a decrease of $236 million in securities due within one year.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Alabama Power in Item 7 of the Form 10-K for a description of Alabama Power's capital requirements for its construction program, including estimated capital expenditures to comply with existing environmental statutes and regulations, scheduled maturities of long-term debt, as well as the related interest, derivative obligations, preferred and preference stock dividends, leases, purchase commitments, and trust funding requirements. Subsequent to September 30, 2017, Alabama Power repaid at maturity $325 million aggregate principal amount of Series Q 5.50% Senior Notes due October 15, 2017. No additional funds will be required through September 30, 2018 to fund maturities of long-term debt.
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Environmental Matters – Environmental Statutes and Regulations – General" and " – Global Climate Issues" of Alabama Power in Item 7 of the Form 10-K for additional information on Alabama Power's environmental compliance strategy.
Alabama Power's Board of Directors approved its construction program that is currently estimated to total $2.2 billion for 2018, $1.6 billion for 2019, $1.6 billion for 2020, $1.7 billion for 2021, and $1.4 billion for 2022. The construction program includes capital expenditures related to contractual purchase commitments for nuclear fuel and capital expenditures covered under LTSAs. Estimated capital expenditures to comply with environmental statutes and regulations included in these amounts are $0.6 billion for 2018, $0.1 billion for 2019, $0.2 billion for 2020, $0.3 billion for 2021, and $0.3 billion for 2022. These estimated expenditures do not include any potential compliance costs that may arise from the EPA's final rules and guidelines or future state plans that would limit CO2 emissions from new, existing, modified, or reconstructed fossil-fuel-fired electric generating units.
Alabama Power also anticipates costs associated with closure in place and monitoring of ash ponds in accordance with the Disposal of Coal Combustion Residuals from Electric Utilities final rule (CCR Rule), which are reflected in Alabama Power's asset retirement obligation liabilities. These costs, which could change as Alabama Power continues to refine its assumptions underlying the cost estimates and evaluate the method and timing of compliance activities, are estimated to be $27 million for 2018, $101 million for 2019, $105 million for 2020, $107 million for 2021, and $109 million for 2022. See Note 1 to the financial statements of Alabama Power under "Asset Retirement Obligations and Other Costs of Removal" in Item 8 of the Form 10-K for additional information. Costs associated with the CCR Rule are expected to be recovered through Rate CNP Compliance.
The construction program is subject to periodic review and revision, and actual construction costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in load projections; changes in environmental statutes and regulations; the outcome of any legal challenges to the environmental rules; changes in generating plants, including unit retirements and replacements and adding or changing fuel sources at existing generating units, to meet regulatory requirements; changes in the expected environmental compliance program; changes in FERC rules and regulations; Alabama PSC approvals; changes in legislation; the cost and efficiency of construction labor, equipment, and materials; project scope and design changes; storm impacts; and the cost of capital. In addition, there can be no assurance that costs related to capital expenditures will be fully recovered.
Sources of Capital
Alabama Power plans to obtain the funds to meet its future capital needs from sources similar to those used in the past, which were primarily from operating cash flows, short-term debt, term loans, external security issuances, and equity contributions from Southern Company. However, the amount, type, and timing of any future financings, if needed, will depend upon prevailing market conditions, regulatory approval, and other factors. See

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MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" of Alabama Power in Item 7 of the Form 10-K for additional information.
Alabama Power's current liabilities sometimes exceed current assets because of long-term debt maturities and the periodic use of short-term debt as a funding source, as well as significant seasonal fluctuations in cash needs.
At September 30, 2017, Alabama Power had approximately $953 million of cash and cash equivalents. Committed credit arrangements with banks at September 30, 2017 were as follows:
Expires     Expires Within One Year
2018 2020 2022 Total Unused Term Out No Term Out
(in millions)
$35
 $500
 $800
 $1,335
 $1,335
 $
 $35
See Note 6 to the financial statements of Alabama Power under "Bank Credit Arrangements" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Bank Credit Arrangements" herein for additional information.
In May 2017 and September 2017, Alabama Power amended its $800 million and $500 million multi-year credit arrangements, which, among other things, extended the maturity dates from 2020 to 2022 and 2018 to 2020, respectively, as reflected in the table above.
Most of these bank credit arrangements, as well as Alabama Power's term loan arrangements, contain covenants that limit debt levels and contain cross-acceleration provisions to other indebtedness (including guarantee obligations) of Alabama Power. Such cross-acceleration provisions to other indebtedness would trigger an event of default if Alabama Power defaulted on indebtedness, the payment of which was then accelerated. At September 30, 2017, Alabama Power was in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowings.
Subject to applicable market conditions, Alabama Power expects to renew or replace its bank credit arrangements as needed, prior to expiration. In connection therewith, Alabama Power may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
A portion of the unused credit with banks is allocated to provide liquidity support to Alabama Power's pollution control revenue bonds and commercial paper programs. The amount of variable rate pollution control revenue bonds outstanding requiring liquidity support was approximately $854 million as of September 30, 2017. At September 30, 2017, Alabama Power had no fixed rate pollution control revenue bonds outstanding that were required to be reoffered within the next 12 months.
Alabama Power also has substantial cash flow from operating activities and access to capital markets, including a commercial paper program, to meet liquidity needs. Alabama Power may meet short-term cash needs through its commercial paper program. Alabama Power may also meet short-term cash needs through a Southern Company subsidiary organized to issue and sell commercial paper at the request and for the benefit of Alabama Power and the other traditional electric operating companies. Proceeds from such issuances for the benefit of Alabama Power are loaned directly to Alabama Power. The obligations of each traditional electric operating company under these arrangements are several and there is no cross-affiliate credit support.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS



Details of commercial paper borrowings were as follows:
  
Short-term Debt During the Period(*)
  
Average
Amount
Outstanding
 
Weighted
Average
Interest Rate
 
Maximum
Amount
Outstanding
  (in millions)   (in millions)
Commercial paper $30
 1.3% $220
(*)Average and maximum amounts are based upon daily balances during the three-month period ended September 30, 2017. No short-term debt was outstanding at September 30, 2017.
Alabama Power believes the need for working capital can be adequately met by utilizing commercial paper programs, lines of credit, and operating cash flows.
Credit Rating Risk
At September 30, 2017, Alabama Power did not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change to BBB and/or Baa2 or below. These contracts are primarily for physical electricity purchases, fuel purchases, fuel transportation and storage, energy price risk management, and transmission.
The maximum potential collateral requirements under these contracts at September 30, 2017 were as follows:
Credit Ratings
Maximum Potential
Collateral
Requirements
 (in millions)
At BBB and/or Baa2$1
At BBB- and/or Baa3$2
Below BBB- and/or Baa3$338
Included in these amounts are certain agreements that could require collateral in the event that either Alabama Power or Georgia Power has a credit rating change to below investment grade. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of Alabama Power to access capital markets and would be likely to impact the cost at which it does so.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including Alabama Power) from stable to negative.
Financing Activities
In February 2017, Alabama Power repaid at maturity $200 million aggregate principal amount of Series 2007A 5.55% Senior Notes.
In March 2017, Alabama Power issued $550 million aggregate principal amount of Series 2017A 2.45% Senior Notes due March 30, 2022. The proceeds were used to repay Alabama Power's short-term indebtedness and for general corporate purposes, including Alabama Power's continuous construction program.
In July 2017, Alabama Power repaid at maturity $36.1 million aggregate principal amount of Series 1993-A, 1993-B, and 1993-C Industrial Development Board of the City of Mobile, Alabama Pollution Control Revenue Refunding Bonds (Alabama Power Company Project).

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS



In September 2017, Alabama Power issued 10 million shares ($250 million aggregate stated capital) of 5.00% Class A Preferred Stock, Cumulative, Par Value $1 Per Share (Stated Capital $25 Per Share). The proceeds were used in October 2017 to redeem all 2 million shares ($50 million aggregate stated capital) of 6.50% Series Preference Stock, 6 million shares ($150 million aggregate stated capital) of 6.45% Series Preference Stock, and 1.52 million shares ($38 million aggregate stated capital) of 5.83% Class A Preferred Stock and for other general corporate purposes, including Alabama Power's continuous construction program.
Subsequent to September 30, 2017, Alabama Power repaid at maturity $325 million aggregate principal amount of Series Q 5.50% Senior Notes due October 15, 2017.
In addition to any financings that may be necessary to meet capital requirements and contractual obligations, Alabama Power plans to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.

GEORGIA POWER COMPANY

GEORGIA POWER COMPANY
CONDENSED STATEMENTS OF INCOME (UNAUDITED)

 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Operating Revenues:       
Retail revenues$2,402
 $2,540
 $5,995
 $6,164
Wholesale revenues, non-affiliates45
 49
 124
 131
Wholesale revenues, affiliates6
 9
 23
 24
Other revenues93
 100
 284
 302
Total operating revenues2,546
 2,698
 6,426
 6,621
Operating Expenses:       
Fuel482
 575
 1,297
 1,390
Purchased power, non-affiliates119
 102
 310
 277
Purchased power, affiliates161
 142
 470
 392
Other operations and maintenance413
 496
 1,194
 1,393
Depreciation and amortization225
 215
 669
 639
Taxes other than income taxes112
 114
 311
 311
Total operating expenses1,512
 1,644
 4,251
 4,402
Operating Income1,034
 1,054
 2,175
 2,219
Other Income and (Expense):       
Interest expense, net of amounts capitalized(105) (98) (310) (290)
Other income (expense), net5
 11
 41
 35
Total other income and (expense)(100) (87) (269) (255)
Earnings Before Income Taxes934
 967
 1,906
 1,964
Income taxes350
 363
 705
 734
Net Income584
 604
 1,201
 1,230
Dividends on Preferred and Preference Stock4
 4
 13
 13
Net Income After Dividends on Preferred and Preference Stock$580
 $600
 $1,188
 $1,217
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Net Income$584
 $604
 $1,201
 $1,230
Other comprehensive income (loss):       
Qualifying hedges:       
Reclassification adjustment for amounts included in net income,
net of tax of $-, $-, $1, and $1, respectively
1
 1
 2
 2
Total other comprehensive income (loss)1
 1
 2
 2
Comprehensive Income$585
 $605
 $1,203
 $1,232
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

GEORGIA POWER COMPANY
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Nine Months Ended September 30,
 2017 2016
 (in millions)
Operating Activities:   
Net income$1,201
 $1,230
Adjustments to reconcile net income to net cash provided from operating activities --   
Depreciation and amortization, total821
 794
Deferred income taxes328
 346
Allowance for equity funds used during construction(29) (36)
Deferred expenses(30) (40)
Pension, postretirement, and other employee benefits(42) (14)
Settlement of asset retirement obligations(95) (93)
Other, net(21) 7
Changes in certain current assets and liabilities —   
-Receivables(254) (162)
-Fossil fuel stock(2) 128
-Other current assets(29) 62
-Accounts payable(161) 39
-Accrued taxes(52) (22)
-Accrued compensation(60) (26)
-Retail fuel cost over recovery(84) 9
-Other current liabilities(11) 44
Net cash provided from operating activities1,480
 2,266
Investing Activities:   
Property additions(1,907) (1,566)
Nuclear decommissioning trust fund purchases(411) (563)
Nuclear decommissioning trust fund sales406
 558
Cost of removal, net of salvage(54) (45)
Change in construction payables, net of joint owner portion180
 (139)
Payments pursuant to LTSAs(59) (27)
Sale of property63
 10
Other investing activities(52) 14
Net cash used for investing activities(1,834) (1,758)
Financing Activities:   
Decrease in notes payable, net(391) (63)
Proceeds —   
Capital contributions from parent company412
 294
Senior notes1,350
 650
FFB loan
 300
Short-term borrowings700
 
Other long-term debt370
 
Redemptions and repurchases —   
Pollution control revenue bonds(65) (4)
Senior notes(450) (700)
Short-term borrowings(300) 
Payment of common stock dividends(961) (979)
Other financing activities(48) (26)
Net cash provided from (used for) financing activities617
 (528)
Net Change in Cash and Cash Equivalents263
 (20)
Cash and Cash Equivalents at Beginning of Period3
 67
Cash and Cash Equivalents at End of Period$266
 $47
Supplemental Cash Flow Information:   
Cash paid during the period for —   
Interest (net of $17 and $15 capitalized for 2017 and 2016, respectively)$284
 $277
Income taxes, net369
 188
Noncash transactions — Accrued property additions at end of period470
 226
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

GEORGIA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Assets At September 30, 2017 At December 31, 2016
  (in millions)
Current Assets:    
Cash and cash equivalents $266
 $3
Receivables —    
Customer accounts receivable 670
 523
Unbilled revenues 276
 224
Under recovered fuel clause revenues 62
 
Joint owner accounts receivable 222
 57
Other accounts and notes receivable 82
 81
Affiliated 21
 18
Accumulated provision for uncollectible accounts (3) (3)
Fossil fuel stock 300
 298
Materials and supplies 480
 479
Prepaid expenses 82
 105
Other regulatory assets, current 200
 193
Other current assets 27
 38
Total current assets 2,685
 2,016
Property, Plant, and Equipment:    
In service 34,589
 33,841
Less: Accumulated provision for depreciation 11,655
 11,317
Plant in service, net of depreciation 22,934
 22,524
Nuclear fuel, at amortized cost 551
 569
Construction work in progress 5,751
 4,939
Total property, plant, and equipment 29,236
 28,032
Other Property and Investments:    
Equity investments in unconsolidated subsidiaries 53
 60
Nuclear decommissioning trusts, at fair value 914
 814
Miscellaneous property and investments 51
 46
Total other property and investments 1,018
 920
Deferred Charges and Other Assets:    
Deferred charges related to income taxes 669
 676
Other regulatory assets, deferred 2,890
 2,774
Other deferred charges and assets 608
 417
Total deferred charges and other assets 4,167
 3,867
Total Assets $37,106
 $34,835
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.


GEORGIA POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's Equity At September 30, 2017 At December 31, 2016
  (in millions)
Current Liabilities:    
Securities due within one year $261
 $460
Notes payable 400
 391
Accounts payable —    
Affiliated 396
 438
Other 1,012
 589
Customer deposits 270
 265
Accrued taxes 353
 407
Accrued interest 121
 106
Accrued compensation 164
 224
Asset retirement obligations, current 214
 299
Other current liabilities 192
 297
Total current liabilities 3,383
 3,476
Long-term Debt 11,610
 10,225
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 6,328
 6,000
Accumulated deferred ITCs 248
 256
Employee benefit obligations 665
 703
Asset retirement obligations, deferred 2,367
 2,233
Other deferred credits and liabilities 232
 320
Total deferred credits and other liabilities 9,840
 9,512
Total Liabilities 24,833
 23,213
Preferred Stock 45
 45
Preference Stock 221
 221
Common Stockholder's Equity:    
Common stock, without par value —    
Authorized — 20,000,000 shares    
Outstanding — 9,261,500 shares 398
 398
Paid-in capital 7,308
 6,885
Retained earnings 4,311
 4,086
Accumulated other comprehensive loss (10) (13)
Total common stockholder's equity 12,007
 11,356
Total Liabilities and Stockholder's Equity $37,106
 $34,835
The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

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GEORGIA POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


THIRD QUARTER 2017 vs. THIRD QUARTER 2016
AND
YEAR-TO-DATE 2017 vs. YEAR-TO-DATE 2016


OVERVIEW
Georgia Power operates as a vertically integrated utility providing electric service to retail customers within its traditional service territory located within the State of Georgia and to wholesale customers in the Southeast.
Many factors affect the opportunities, challenges, and risks of Georgia Power's business of providing electric service. These factors include the ability to maintain a constructive regulatory environment, to maintain and grow energy sales, and to effectively manage and secure timely recovery of costs. These costs include those related to projected long-term demand growth, stringent environmental standards, reliability, fuel, capital expenditures, and restoration following major storms. Georgia Power has various regulatory mechanisms that operate to address cost recovery. Effectively operating pursuant to these regulatory mechanisms and appropriately balancing required costs and capital expenditures with customer prices will continue to challenge Georgia Power for the foreseeable future.
Georgia Power continues to focus on several key performance indicators including, but not limited to, customer satisfaction, plant availability, system reliability, the execution of major construction projects, and net income after dividends on preferred and preference stock.
Nuclear Construction
Georgia Power and the Vogtle Owners have been constructing Plant Vogtle Units 3 and 4 since 2009. On March 29, 2017, the EPC Contractor for Plant Vogtle Units 3 and 4 filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. To provide for a continuation of work, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into an interim assessment agreement with the EPC Contractor (Interim Assessment Agreement), which the bankruptcy court approved on March 30, 2017. On June 9, 2017, Georgia Power and the other Vogtle Owners and Toshiba entered into a settlement agreement regarding the Toshiba Guarantee (Guarantee Settlement Agreement). Pursuant to the Guarantee Settlement Agreement, Toshiba acknowledged the amount of its obligation under the Toshiba Guarantee is $3.68 billion (Guarantee Obligations), of which Georgia Power's proportionate share is approximately $1.7 billion, and that the Guarantee Obligations exist regardless of whether Plant Vogtle Units 3 and 4 are completed. On October 2, 2017, Georgia Power received the first installment of the Guarantee Obligations of $300 million from Toshiba, of which Georgia Power's proportionate share was $137 million.
Additionally, on June 9, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, and the EPC Contractor entered into a services agreement (Services Agreement), which was amended and restated on July 20, 2017, for the EPC Contractor to transition construction management of Plant Vogtle Units 3 and 4 to Southern Nuclear and to provide ongoing design, engineering, and procurement services to Southern Nuclear. On July 27, 2017, the Services Agreement, and the EPC Contractor's rejection of the Vogtle 3 and 4 Agreement, became effective upon approval by the DOE and the Interim Assessment Agreement expired pursuant to its terms. The Services Agreement will continue until the start-up and testing of Plant Vogtle Units 3 and 4 is complete and electricity is generated and sold from both units. The Services Agreement is terminable by the Vogtle Owners upon 30 days' written notice. Effective October 23, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, entered into a construction completion agreement (Bechtel Agreement) with Bechtel Power Corporation (Bechtel), whereby Bechtel will serve as the primary contractor for the remaining construction activities for Plant Vogtle Units 3 and 4.
In the seventeenth Vogtle Construction Monitoring (VCM) report filed on August 31, 2017, Georgia Power recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


4 is by November 2021 for Unit 3 and by November 2022 for Unit 4, at an additional cost of approximately $1.41 billion, net of the Guarantee Settlement Agreement. The Georgia PSC is expected to make a decision on these matters by February 6, 2018.
On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion in additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOE cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. See Note 6 to the financial statements of Georgia Power under "DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information, including applicable covenants, events of default, mandatory prepayment events, and conditions to borrowing.
An inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4, and therefore, on Georgia Power's financial statements. The ultimate outcome of these matters cannot be determined at this time. See FUTURE EARNINGS POTENTIAL – "Retail Regulatory MattersNuclear Construction" herein for additional information onchanges in laws or regulations governing Plant Vogtle Units 3 and 4, including Georgia Power's cost-to-complete(ii) legal fees and cancellation cost assessments for Plant Vogtle Units 3 and 4.
RESULTS OF OPERATIONS
Net Income
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(20) (3.3) $(29) (2.4)
Georgia Power's net income after dividends on preferred and preference stock for the third quarter 2017 was $580 million compared to $600 million for the corresponding period in 2016. For year-to-date 2017, net income after dividends on preferred and preference stock was $1.19 billion compared to $1.22 billion for the corresponding period in 2016. The decreases were primarilylegal expenses incurred due to lower revenues resulting from milder weather and lower customer usage as compared to the corresponding periods in 2016, partially offset by lower non-fuel operations and maintenance expenses.
Retail Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(138) (5.4) $(169) (2.7)
In the third quarter 2017, retail revenues were $2.40 billion compared to $2.54 billion for the corresponding period in 2016. For year-to-date 2017, retail revenues were $6.00 billion compared to $6.16 billion for the corresponding period in 2016.

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Tablelitigation with contractors or subcontractors that are not subsidiaries or affiliates of Contents
GEORGIA POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Details of the changes in retail revenues were as follows:
 Third Quarter 2017 Year-to-Date 2017
 (in millions) (% change) (in millions) (% change)
Retail – prior year$2,540
   $6,164
  
Estimated change resulting from –       
Rates and pricing41
 1.6
 60
 1.0
Sales decline(39) (1.5) (50) (0.8)
Weather(94) (3.7) (204) (3.3)
Fuel cost recovery(46) (1.8) 25
 0.4
Retail – current year$2,402
 (5.4)% $5,995
 (2.7)%
Revenues associated with changes in rates and pricing increased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016 primarily due to an increase in revenues related to the recovery of Plant Vogtle Units 3 and 4 construction financing costs under the NCCR tariff. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Nuclear Construction" of Georgia Power in Item 7 of the Form 10-K and FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Nuclear Construction – Regulatory Matters" herein for additional information related to the NCCR tariff.
Revenues attributable to changes in sales decreased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016. Weather-adjusted residential KWH sales decreased 3.5% and 0.8% for the third quarter and year-to-date 2017, respectively, primarily due to a decline in average customer usage due to an increase in multi-family housing and energy saving initiatives, partially offset by customer growth. Weather-adjusted commercial KWH sales decreased 1.4% and 1.1% for the third quarter and year-to-date 2017, respectively, primarily due to a decline in average customer usage resulting from an increase in energy saving initiatives and electronic commerce transactions, partially offset by customer growth. Weather-adjusted industrial KWH sales increased 0.8% in the third quarter 2017 primarily due to increased demand in the non-manufacturing, rubber, and textile sectors, partially offset by decreased demand in the chemicals and paper sectors. Weather-adjusted industrial KWH sales decreased 1.2% for year-to-date 2017 primarily due to decreased demand in the paper and chemicals sectors, partially offset by increased demand in the non-manufacturing and rubber sectors. Despite a more stable dollar and improving global economy, the industrial sector remains constrained by economic policy uncertainty. Additionally, Hurricane Irma negatively impacted customer usage for all customer classes during the third quarter and year-to-date 2017.
Fuel revenues and costs are allocated between retail and wholesale jurisdictions. In the third quarter 2017, retail fuel cost recovery revenues decreased $46 million when compared to the corresponding period in 2016 primarily due to lower coal prices and lower energy sales resulting from milder weather. For year-to-date 2017, retail fuel cost recovery revenues increased $25 million when compared to the corresponding period in 2016 primarily due to higher natural gas prices, partially offset by lower coal prices and lower energy sales resulting from milder weather. Electric rates include provisions to adjust billings for fluctuations in fuel costs, including the energy component of purchased power costs. Under these fuel cost recovery provisions, fuel revenues generally equal fuel expenses and do not affect net income. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Fuel Cost Recovery" of Georgia Power in Item 7 of the Form 10-K for additional information.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Other Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(7) (7.0) $(18) (6.0)
In the third quarter 2017, other revenues were $93 million compared to $100 million for the corresponding period in 2016. The decrease was primarily due to a $3 million decrease in open access transmission tariff revenues, primarily as a result of the expiration of long-term transmission services contracts, and a $3 million decrease in solar application fee revenues, partially offset by a $3 million increase in outdoor lighting sales revenues primarily attributable to LED conversions.
For year-to-date 2017, other revenues were $284 million compared to $302 million for the corresponding period in 2016. The decrease was primarily due to a $14 million adjustment in 2016 for customer temporary facilities services revenues and a $12 million decrease in open access transmission tariff revenues, primarily as a result of the expiration of long-term transmission services contracts, partially offset by a $10 million increase in outdoor lighting sales revenues primarily attributable to LED conversions.
Fuel and Purchased Power Expenses
 Third Quarter 2017
vs.
Third Quarter 2016
 Year-to-Date 2017
vs.
Year-to-Date 2016
 (change in millions) (% change) (change in millions) (% change)
Fuel$(93) (16.2) $(93) (6.7)
Purchased power – non-affiliates17
 16.7
 33
 11.9
Purchased power – affiliates19
 13.4
 78
 19.9
Total fuel and purchased power expenses$(57)   $18
  
In the third quarter 2017, total fuel and purchased power expenses were $762 million compared to $819 million in the corresponding period in 2016. The decrease was primarily due to a $59 million decrease related to the volume of KWHs generated primarily due to milder weather, resulting in lower customer demand, and slight decreases in the volume of KWHs purchased and the average cost of fuel. These decreases were partially offset by a $7 million increase in the average cost of purchased power primarily related to higher natural gas prices.
For year-to-date 2017, total fuel and purchased power expenses were $2.08 billion compared to $2.06 billion in the corresponding period in 2016. The increase was primarily due to a $97 million increase in the average cost of fuel and purchased power primarily related to higher natural gas prices, partially offset by a net decrease of $79 million related to the volume of KWHs generated and purchased primarily due to milder weather, resulting in lower customer demand.
Fuel and purchased power energy transactions do not have a significant impact on earnings since these fuel expenses are generally offset by fuel revenues through Georgia Power's fuel cost recovery mechanism. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Fuel Cost Recovery" of Georgia Power in Item 7 of the Form 10-K for additional information.

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GEORGIA POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Details of Georgia Power's generation and purchased power were as follows:
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 Year-to-Date 2016
Total generation (in billions of KWHs)
18 20 48 53
Total purchased power (in billions of KWHs)
7 7 20 19
Sources of generation (percent) —
       
Coal35 44 33 37
Nuclear23 22 24 23
Gas41 34 41 38
Hydro1  2 2
Cost of fuel, generated (in cents per net KWH) 
       
Coal3.08 3.16 3.17 3.32
Nuclear0.84 0.85 0.84 0.85
Gas2.63 2.61 2.71 2.27
Average cost of fuel, generated (in cents per net KWH)
2.38 2.47 2.40 2.34
Average cost of purchased power (in cents per net KWH)(*)
4.68 4.57 4.63 4.46
(*)Average cost of purchased power includes fuel purchased by Georgia Power for tolling agreements where power is generated by the provider.
Fuel
In the third quarter 2017, fuel expense was $482 million compared to $575 million in the corresponding period in 2016. The decrease was primarily due to a 9.6% decrease in the volume of KWHs generated largely due to milder weather, resulting in lower customer demand, and a 3.6% decrease in the average cost of fuel per KWH generated primarily resulting from lower coal prices.
For year-to-date 2017, fuel expense was $1.30 billion compared to $1.39 billion in the corresponding period in 2016. The decrease was primarily due to an 8.4% decrease in the volume of KWHs generated largely due to milder weather, resulting in lower customer demand, partially offset by a 19.4% increase in the average cost of natural gas per KWH generated.
Purchased Power – Non-Affiliates
In the third quarter 2017, purchased power expense from non-affiliates was $119 million compared to $102 million in the corresponding period in 2016. For year-to-date 2017, purchased power expense from non-affiliates was $310 million compared to $277 million in the corresponding period in 2016. The increases were primarily due to increases in the volume of KWHs purchased of 14.2% and 12.6% in the third quarter and year-to-date 2017, respectively, primarily due to unplanned outages at Georgia Power-owned generating units. The increase for year-to-date 2017 was partially offset by a 1.5% decrease in the average cost per KWH purchased.
Energy purchases from non-affiliates will vary depending on the market prices of wholesale energy as compared to the cost of the Southern Company, system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation.
Purchased Power – Affiliates
In the third quarter 2017, purchased power expense(iii) additional costs caused by requests from affiliates was $161 million compared to $142 million in the corresponding period in 2016. The increase was primarily due to a 1.5% increase in the average cost per KWH purchased primarily resulting from higher natural gas prices, partially offset by a 5.6% decrease in the volume of

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KWHs purchased due to the expiration of a PPA in May 2017 and milder weather, resulting in lower customer demand.
For year-to-date 2017, purchased power expense from affiliates was $470 million compared to $392 million in the corresponding period in 2016. The increase was primarily the result of a 4.3% increase in the volume of KWHs purchased to support Southern Company system transmission reliability and due to unplanned outages at Georgia Power-owned generating units and a 5.9% increase in the average cost per KWH purchased primarily resulting from higher natural gas prices.
Energy purchases from affiliates will vary depending on demand and the availability and cost of generating resources at each company within the Southern Company system. These purchases are made in accordance with the IIC or other contractual agreements, all as approved by the FERC.
Other Operations and Maintenance Expenses
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(83) (16.7) $(199) (14.3)
In the third quarter 2017, other operations and maintenance expenses were $413 million compared to $496 million in the corresponding period in 2016. The decrease was primarily due to cost containment and modernization activities implemented in the third quarter 2016 that contributed to decreases of $29 million in generation maintenance costs, $9 million in customer accounts, service, and sales costs, $8 million in employee benefits, and $8 million in transmission and distribution overhead line maintenance. Other factors include decreases of $12 million in charges related to employee attrition plans and $8 million in scheduled generation outage costs.
For year-to-date 2017, other operations and maintenance expenses were $1.19 billion compared to $1.39 billion in the corresponding period in 2016. The decrease was primarily due to cost containment and modernization activities implemented in the third quarter 2016 that contributed to decreases of $56 million in generation maintenance costs, $34 million in other employee compensation and benefits, and $23 million in transmission and distribution overhead line maintenance. Other factors include a $19 million increase in gains from sales of integrated transmission system assets, a $16 million decrease in customer assistance expenses primarily in demand-side management costs related to the timing of new programs, an $8 million decrease in charges related to employee attrition plans, and a $7 million decrease in billing adjustments with integrated transmission system owners.
Depreciation and Amortization
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$10 4.7 $30 4.7
In the third quarter 2017, depreciation and amortization was $225 million compared to $215 million in the corresponding period in 2016. The increase was primarily due to an $8 million increase related to additional plant in service and a $4 million decrease in amortization of regulatory liabilities related to other cost of removal obligations that expired in December 2016.
For year-to-date 2017, depreciation and amortization was $669 million compared to $639 million in the corresponding period in 2016. The increase was primarily due to a $25 million increase related to additional plant in service and an $11 million decrease in amortization of regulatory liabilities related to other cost of removal obligations that expired in December 2016, partially offset by a $5 million decrease in depreciation related to generating unit retirements in 2016.

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Interest Expense, Net of Amounts Capitalized
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$7 7.1 $20 6.9
In the third quarter 2017, interest expense, net of amounts capitalized was $105 million compared to $98 million in the corresponding period in 2016. For year-to-date 2017, interest expense, net of amounts capitalized was $310 million compared to $290 million in the corresponding period in 2016. The increases were primarily due to increases in outstanding borrowings. See FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" and "Financing Activities" herein for additional information.
Other Income (Expense), Net
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(6) (54.5) $6 17.1
In the third quarter 2017, other income (expense), net was $5 million compared to $11 million in the corresponding period in 2016. The decrease was primarily due to a decrease of $9 million in AFUDC equity resulting from higher short-term borrowings, partially offset by increases of $3 million in customer contributions in aid of construction and $3 million in contract services revenue.
For year-to-date 2017, other income (expense), net was $41 million compared to $35 million in the corresponding period in 2016. The increase was primarily due to increases of $6 million in contract services revenue, $4 million in customer contributions in aid of construction, and $4 million in gains on purchases of state tax credits, partially offset by a $7 million decrease in AFUDC equity resulting from higher short-term borrowings.
Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(13) (3.6) $(29) (4.0)
In the third quarter 2017, income taxes were $350 million compared to $363 million in the corresponding period in 2016. For year-to-date 2017, income taxes were $705 million compared to $734 million in the corresponding period in 2016. The decreases were primarily due to lower pre-tax earnings and increased state ITCs.
FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Georgia Power's future earnings potential. The level of Georgia Power's future earnings depends on numerous factors that affect the opportunities, challenges, and risks of Georgia Power's business of providing electric service. These factors include Georgia Power's ability to maintain a constructive regulatory environment that continues to allow for the timely recovery of prudently-incurred costs during a time of increasing costs and limited projected demand growth over the next several years. Matters related to Plant Vogtle Units 3 and 4 construction and rate recovery are also major factors. Future earnings will be driven primarily by customer growth. Earnings will also depend upon maintaining and growing sales, considering, among other things, the adoption and/or penetration rates of increasingly energy-efficient technologies, increasing volumes of electronic commerce transactions, and higher multi-family home construction. Earnings are subject to a variety of other factors. These factors include weather, competition, new energy contracts with other utilities, energy conservation practiced by customers, the use of alternative energy sources by customers, the price of electricity, the price elasticity of demand, and the rate of economic growth or decline in Georgia Power's service territory. Demand for electricity is primarily driven by the pace of economic

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growth that may be affected by changes in regional and global economic conditions, which may impact future earnings.
Current proposals related to potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals, including any potential changes to the availability of nuclear PTCs, is dependent on the final form of any legislation enacted and the related transition rules and cannot be determined at this time, but could have a material impact on Georgia Power's financial statements.
For additional information relating to these issues, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL of Georgia Power in Item 7 of the Form 10-K and RISK FACTORS in Item 1A herein.
Environmental Matters
Compliance costs related to federal and state environmental statutes and regulations could affect earnings if such costs cannot continue to be fully recovered in rates on a timely basis. Georgia Power's Environmental Compliance Cost Recovery (ECCR) tariff allows for the recovery of capital and operations and maintenance costs related to environmental controls mandated by state and federal regulations. Environmental compliance spending over the next several years may differ materially from the amounts estimated. The timing, specific requirements, and estimated costs could change as environmental statutes and regulations are adopted or modified, as compliance plans are revised or updated, and as legal challenges to rules are completed. Further, higher costs that are recovered through regulated rates could contribute to reduced demand for electricity, which could negatively affect results of operations, cash flows, and financial condition. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Environmental Matters" of Georgia Power in Item 7 and Note 3 to the financial statements of Georgia Power under "Environmental Matters" in Item 8 of the Form 10-K for additional information.
Environmental Statutes and Regulations
Air Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Air Quality" of Georgia Power in Item 7 of the Form 10-K for additional information regarding the EPA's eight-hour ozone National Ambient Air Quality Standard (NAAQS).
On June 2, 2017, the EPA published a final rule redesignating a 15-county area within metropolitan Atlanta to attainment for the 2008 eight-hour ozone NAAQS.
On June 18, 2017, the EPA published a notice delaying attainment designations for the 2015 eight-hour ozone NAAQS by one year, setting a revised deadline of October 1, 2018. However, on August 2, 2017, the EPA issued a withdrawal notice of the one-year extension and reinstated the original October 1, 2017 designation deadline. The ultimate outcome of this matter cannot be determined at this time.
Water Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Water Quality" of Georgia Power in Item 7 of the Form 10-K for additional information regarding the final effluent guidelines rule and the final rule revising the regulatory definition of waters of the U.S. for all Clean Water Act (CWA) programs.
On April 25, 2017, the EPA published a notice announcing it would reconsider the effluent guidelines rule, which had been finalized in November 2015. On September 18, 2017, the EPA published a final rule establishing a stay of the compliance deadlines for certain effluent limitations and pretreatment standards under the rule.

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On June 27, 2017, the EPA and the U.S. Army Corps of Engineers proposed to rescind the final rule that revised the regulatory definition of waters of the U.S. for all CWA programs. The final rule has been stayed since October 2015 by the U.S. Court of Appeals for the Sixth Circuit.
The ultimate outcome of these matters cannot be determined at this time.
Global Climate Issues
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Global Climate Issues" of Georgia Power in Item 7 of the Form 10-K for additional information.
On March 28, 2017, the U.S. President signed an executive order directing agencies to review actions that potentially burden the development or use of domestically produced energy resources. The executive order specifically directs the EPA to review the Clean Power Plan and final greenhouse gas emission standards for new, modified, and reconstructed electric generating units and, if appropriate, take action to suspend, revise, or rescind those rules. On October 16, 2017, the EPA published a proposed rule to repeal the Clean Power Plan. The EPA has not determined whether or when it will promulgate a replacement rule.
On June 1, 2017, the U.S. President announced that the United States will withdraw from the non-binding Paris Agreement and begin renegotiation of its terms.
The ultimate outcome of these matters cannot be determined at this time.
FERC Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS �� FUTURE EARNINGS POTENTIAL "FERC Matters" of Georgia Power in Item 7 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' (including Georgia Power's) and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies (including Georgia Power) and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' (including Georgia Power's) and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' (including Georgia Power's) and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies (including Georgia Power) and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017 order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies (including Georgia Power) and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Retail Regulatory Matters
Georgia Power's revenues from regulated retail operations are collected through various rate mechanisms subject to the oversight of the Georgia PSC. Georgia Power currently recovers its costs from the regulated retail business through the 2013 ARP, which includes traditional base tariff rates, Demand-Side Management tariffs, ECCR tariffs, and Municipal Franchise Fee tariffs. In addition, financing costs related to the construction of Plant Vogtle Units 3 and 4 are being collected through the NCCR tariff and fuel costs are collected through a separate fuel cost recovery tariff. See "Nuclear Construction" herein and Note 3 to the financial statements of Georgia Power under "Retail Regulatory Matters – Nuclear Construction" in Item 8 of the Form 10-K for additional information regarding the NCCR tariff. Also see MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL

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– "Retail Regulatory Matters – Fuel Cost Recovery" of Georgia Power in Item 7 of the Form 10-K for additional information regarding fuel cost recovery.
Renewables
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Integrated Resource Plan" of Georgia Power in Item 7 of the Form 10-K for additional information regarding renewable energy projects.
On May 16, 2017, the Georgia PSC approved Georgia Power's request to build, own, and operate a 139-MW solar generation facility at a U.S. Air Force base that is expected to be placed in service by the end of 2019.
During the nine months ended September 30, 2017, Georgia Power continued construction of a 31-MW solar generation facility at a U.S. Marine Corps base that is expected to be placed in service in the fourth quarter 2017.
The ultimate outcome of these matters cannot be determined at this time.
Integrated Resource Plan
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Integrated Resource Plan" of Georgia Power in Item 7 of the Form 10-K for additional information regarding Georgia Power's triennial Integrated Resource Plan.
On March 7, 2017, the Georgia PSC approved Georgia Power's decision to suspend work at a future generation site in Stewart County, Georgia, due to changing economics, including load forecasts and lower fuel costs. The timing of recovery for costs incurred of approximately $50 million will be determined by the Georgia PSC in a future base rate case. The ultimate outcome of this matter cannot be determined at this time.
Storm Damage Recovery
Georgia Power is accruing $30 million annually through December 31, 2019, as provided in the 2013 ARP, for incremental operating and maintenance costs of damage from major storms to its transmission and distribution facilities. During September 2017, Hurricane Irma caused significant damage to Georgia Power's transmission and distribution facilities. The total amount of incremental restoration costs related to this hurricane is estimated to be approximately $150 million. As of September 30, 2017, Georgia Power had deferred approximately $145 million in a regulatory asset related to storm damage. As of September 30, 2017, the total balance in the regulatory asset related to storm damage was $360 million. The rate of storm damage cost recovery is expected to be adjusted as part of Georgia Power's next base rate case required to be filed by July 1, 2019. As a result of this regulatory treatment, costs related to storms are not expected to have a material impact on Georgia Power's financial statements. See Note 1 to the financial statements of Georgia Power under "Storm Damage Recovery" in Item 8 of the Form 10-K for additional information regarding Georgia Power's storm damage reserve.
Nuclear Construction
See Note 3 to the financial statements of Georgia Power under "Retail Regulatory Matters – Nuclear Construction" in Item 8 of the Form 10-K for additional information regarding the construction of Plant Vogtle Units 3 and 4, VCM reports, the NCCR tariff, and the Contractor Settlement Agreement.
Vogtle 3 and 4 Agreement and EPC Contractor Bankruptcy
In 2008, Georgia Power, acting for itself and as agent for the Vogtle Owners entered intoother than Georgia Power, except for the Vogtle 3 and 4 Agreement, pursuantexercise of a right to which the EPC Contractor agreed to design, engineer, procure, construct, and test Plant Vogtle Units 3 and 4. Under the terms of the Vogtle 3 and 4 Agreement, the Vogtle Owners agreed to pay a purchase price subject to certain price escalations and adjustments, including fixed escalation amounts and index-based adjustments, as well as adjustments for change orders, and performance bonuses for early completion and unit performance. Georgia Power's proportionate share of Plant Vogtle Units 3 and 4 is 45.7%.

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The Vogtle 3 and 4 Agreement also provided for liquidated damages upon the EPC Contractor's failure to fulfill the schedule and certain performance guarantees, each subject to an aggregate cap of 10% of the contract price, or approximately $920 million (approximately $420 million based on Georgia Power's ownership interest). Under the Toshiba Guarantee, Toshiba guaranteed certain payment obligations of the EPC Contractor, including any liability of the EPC Contractor for abandonment of work. In January 2016, Westinghouse delivered to the Vogtle Owners $920 million of letters of credit from financial institutions (Westinghouse Letters of Credit) to secure a portion of the EPC Contractor's potential obligationsvote granted under the Vogtle 3 and 4 Agreement. The Westinghouse Letters of Credit are subject to annual renewals through June 30, 2020 and require 60 days' written notice to Georgia Power in the event the Westinghouse Letters of Credit will not be renewed.Joint Ownership Agreements, that increase costs by $100,000 or more.
Under the terms of the Vogtle 3 and 4 Agreement, the EPC Contractor did not have the right to terminate the Vogtle 3 and 4 Agreement for convenience. In the event of an abandonment of work by the EPC Contractor, the maximum liability of the EPC Contractor under the Vogtle 3 and 4 Agreement was 40% of the contract price (approximately $1.7 billion based on Georgia Power's ownership interest).
On March 29, 2017, the EPC Contractor filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. To provide for a continuation of work at Plant Vogtle Units 3 and 4, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into the Interim Assessment Agreement, which the bankruptcy court approved on March 30, 2017.
The Interim Assessment Agreement provided, among other items, that during the term of the Interim Assessment Agreement Georgia Power was obligated to pay, on behalf of the Vogtle Owners, all costs accrued by the EPC Contractor for subcontractors and vendors for services performed or goods provided. The Interim Assessment Agreement, as amended, expired on July 27, 2017.
Subsequentaddition, pursuant to the EPC Contractor bankruptcy filing, a number of subcontractors to the EPC Contractor, including Fluor Enterprises, Inc., a subsidiary of Fluor Corporation, alleged non-payment by the EPC Contractor for amounts owed for work performed on Plant Vogtle Units 3 and 4. Georgia Power, acting for itself and as agent for the Vogtle Owners, has taken, and continues to take, actions to remove liens filed by these subcontractors through the posting of surety bonds. Georgia Power estimates the aggregate liability, through September 30, 2017, of the Vogtle Owners for the removal of subcontractor liens and payment of other EPC Contractor pre-petition accounts payable to total approximately $386 million, of which $340 million had been paid or accrued as of September 30, 2017. Georgia Power's proportionate share of this aggregate liability totaled approximately $176 million.
On June 9, 2017, Georgia Power and the other Vogtle Owners and Toshiba entered into the Guarantee Settlement Agreement. Pursuant to the Guarantee Settlement Agreement, Toshiba acknowledged the amount of its obligation under the Toshiba Guarantee is $3.68 billion, of which Georgia Power's proportionate share is approximately $1.7 billion, and that the Guarantee Obligations exist regardless of whether Plant Vogtle Units 3 and 4 are completed. The Guarantee Settlement Agreement also provides for a schedule of payments for the Guarantee Obligations, which will reduce CWIP, beginning in October 2017 and continuing through January 2021. In the event Toshiba receives certain payments, including sale proceeds, from or related to Westinghouse (or its subsidiaries) or Toshiba Nuclear Energy Holdings (UK) Limited (or its subsidiaries), it will hold a portion of such payments in trust for the Vogtle Owners and promptly pay them as offsets against any remaining Guarantee Obligations. Under the Guarantee Settlement Agreement, the Vogtle Owners will forbear from exercising certain remedies, including drawing on the Westinghouse Letters of Credit, until June 30, 2020, unless certain events of nonpayment, insolvency, or other material breach of the Guarantee Settlement Agreement by Toshiba occur. If such an event occurs, the balance of the Guarantee Obligations will become immediately due and payable, and the Vogtle Owners may exercise any and all rights and remedies, including drawing on the Westinghouse Letters of Credit without restriction. In addition, the Guarantee Settlement Agreement does not restrict the Vogtle Owners from fully drawing on the Westinghouse Letters of Credit in the event they are not renewed or replaced prior to the expiration date. On October 2, 2017, Georgia Power received the first installment of the Guarantee Obligations of $300 million from Toshiba, of which Georgia Power's proportionate share was $137 million. Georgia Power is considering potential options with respect to its right to future payments under the Guarantee Settlement Agreement and its claims against

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the EPC Contractor in the EPC Contractor's bankruptcy proceeding, including a potential sale of those payment rights and bankruptcy claims. Any such transaction cannot be assured and would be subject to DOE consents and related approvals under the Loan Guarantee Agreement and related agreements.
On August 10, 2017, Toshiba released its financial results for the quarter ended June 30, 2017, which reflected a negative shareholders' equity balance of approximately $4.5 billion as of June 30, 2017. Toshiba previously announced the existence of material events and conditions that raise substantial doubt about Toshiba's ability to continue as a going concern. As a result, substantial risk regarding the Vogtle Owners' ability to fully collect the Guarantee Obligations continues to exist. An inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4 and, therefore, on Georgia Power's financial statements.
Additionally, on June 9, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, and the EPC Contractor entered into the Services Agreement, which was amended and restated on July 20, 2017, for the EPC Contractor to transition construction management of Plant Vogtle Units 3 and 4 to Southern Nuclear and to provide ongoing design, engineering, and procurement services to Southern Nuclear. On July 20, 2017, the bankruptcy court approved the EPC Contractor's motion seeking authorization to (i) enter into the Services Agreement, (ii) assume and assign to the Vogtle Owners certain project-related contracts, (iii) join the Vogtle Owners as counterparties to certain assumed project-related contracts, and (iv) reject the Vogtle 3 and 4 Agreement. The Services Agreement, and the EPC Contractor's rejection of the Vogtle 3 and 4 Agreement, became effective upon approval by the DOE on July 27, 2017. The Services Agreement will continue until the start-up and testing of Plant Vogtle Units 3 and 4 is complete and electricity is generated and sold from both units. The Services Agreement is terminable by the Vogtle Owners upon 30 days' written notice.
Effective October 23, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, entered into the Bechtel Agreement, whereby Bechtel will serve as the primary contractor for the remaining construction activities for Plant Vogtle Units 3 and 4. Facility design and engineering remains the responsibility of the EPC Contractor under the Services Agreement. The Bechtel Agreement is a cost reimbursable plus fee arrangement, whereby Bechtel will be reimbursed for actual costs plus a fee and an at-risk fee, which is subject to adjustment based on Bechtel's performance against cost and schedule targets. Each Vogtle Owner is severally (not jointly) liable for its proportionate share, based on its ownership interest, of all amounts owed to Bechtel under the Bechtel Agreement. The Vogtle Owners may terminate the Bechtel Agreement at any time for their convenience, provided that the Vogtle Owners will be required to pay amounts related to work performed prior to the termination (including the applicable portion of the base fee), certain termination-related costs, and, at certain stages of the work, the at-risk fee. Bechtel may terminate the Bechtel Agreement under certain circumstances, including certain Vogtle Owner suspensions of work, certain breaches of the Bechtel Agreement by the Vogtle Owners, Vogtle Owner insolvency, and certain other events. Pursuant to the Loan Guarantee Agreement, Georgia Power is required to obtain the DOE's approval of the Bechtel Agreement prior to obtaining any further advances under the Loan Guarantee Agreement.
In connection with the recommendation to continue with construction of Plant Vogtle Units 3 and 4 (described below), the Vogtle Owners agreed on a term sheet to amend the existing joint ownership agreements to provide for additional Vogtle Owner approval requirements. Under the term sheet,Global Amendments, the holders of at least 90% of the ownership interests in Plant Vogtle Units 3 and 4 must vote to continue construction if certain adverse events (Project Adverse Events) occur, including, among other events: (i) the bankruptcy of Toshiba or a material breach by Toshiba ofToshiba; (ii) the Guarantee Settlement Agreement; (ii) termination or rejection in bankruptcy of certain agreements, including the Vogtle Services Agreement, the Bechtel Agreement, or the Bechtel Agreement;agency agreement with
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(UNAUDITED)
Southern Nuclear; (iii) Georgia Power's public announcement of its intention not to submit for rate recovery any portion of its investment in Plant Vogtle Units 3 and 4 or the Georgia PSC determines that any of Georgia Power's costs relating to the construction of Plant Vogtle Units 3 and 4 will not be recovered in retail rates, because suchexcluding any additional amounts paid by Georgia Power on behalf of the other Vogtle Owners pursuant to the Global Amendments described above and the first 6% of costs during any six-month VCM reporting period that are deemed unreasonabledisallowed by the Georgia PSC for recovery, or imprudent; orfor which Georgia Power elects not to seek cost recovery, through retail rates; and (iv) an increase in the construction budget contained inincremental extension of one year or more from the seventeenth VCM report by more than $1 billion orestimated in-service dates of November 2021 and November 2022 for Units 3 and 4, respectively. The schedule extension announced in February 2022 triggered the requirement for a vote to continue construction and all the Vogtle Owners voted to continue construction.
Georgia Power and the other Vogtle Owners do not agree on either the starting dollar amount for the determination of cost increases subject to the cost-sharing and tender provisions of the Global Amendments or the extent to which COVID-19-related costs impact those provisions. The other Vogtle Owners notified Georgia Power that they believe the project schedule containedcapital cost forecast approved by the Vogtle Owners in February 2022 triggered the tender provisions. In June 2022 and July 2022, OPC and Dalton, respectively, notified Georgia Power of their purported exercises of their tender options. Georgia Power did not accept these purported tender exercises.
In June 2022, OPC and MEAG Power each filed a separate lawsuit against Georgia Power in the seventeenth VCM reportSuperior Court of Fulton County, Georgia seeking a declaratory judgment that the starting dollar amount is $17.1 billion and that the cost-sharing and tender provisions had been triggered. The lawsuits also assert other claims, including breach of contract allegations, and seek, among other remedies, damages and injunctive relief requiring Georgia Power to track and allocate construction costs consistent with MEAG Power's and OPC's interpretations of the Global Amendments. In July 2022, Georgia Power filed its answers in the lawsuits filed by more than one year.MEAG Power and OPC and included counterclaims seeking a declaratory judgment that the starting dollar amount is $18.38 billion and that costs related to force majeure events are excluded prior to calculating the cost-sharing and tender provisions and when calculating Georgia Power's related financial obligations. In September 2022, Dalton filed complaints in each of these lawsuits. Also in September 2022, Georgia Power and MEAG Power reached an agreement to resolve their dispute regarding the proper interpretation of the cost-sharing and tender provisions of the Global Amendments. Under the terms of the agreement, among other items, (i) MEAG Power will not exercise its tender option and will retain its full ownership interest in Plant Vogtle Units 3 and 4; (ii) Georgia Power will reimburse a portion of MEAG Power's costs of construction for Plant Vogtle Units 3 and 4 as such costs are incurred and with no further adjustment for force majeure costs, which payments will total approximately $92 million based on the current project capital cost forecast; and (iii) Georgia Power will reimburse 20% of MEAG Power's costs of construction with respect to any amounts over the current project capital cost forecast, with no further adjustment for force majeure costs. In addition, underMEAG Power agreed to vote to continue construction upon occurrence of a Project Adverse Event unless the term sheet,commercial operation date of either of Plant Vogtle Unit 3 or Unit 4 is not projected to occur by December 31, 2025. In October 2022, MEAG Power and Georgia Power filed a notice of settlement and voluntary dismissal of their pending litigation, including Georgia Power's counterclaim, and Dalton dismissed its related complaint.
Georgia Power recorded pre-tax charges to income through the fourth quarter 2022 of $407 million ($304 million after tax) associated with the cost-sharing and tender provisions of the Global Amendments, including the settlement with MEAG Power. This total is included in the total project capital cost forecast and will not be recovered from retail customers. The settlement with MEAG Power does not resolve the separate pending litigation with OPC, including Dalton's associated complaint, described above. Georgia Power may be required approvalto record further pre-tax charges to income of holdersup to approximately $345 million associated with the cost-sharing and tender provisions of the Global Amendments for OPC and Dalton based on the current project capital cost forecast.
Georgia Power's ownership interestsinterest in Plant Vogtle Units 3 and 4 is at least (i) 90% for a changecontinues to be 45.7%. Georgia Power believes the increases in the total project capital cost forecast through December 31, 2022 triggered the tender provisions, but Georgia Power disagrees with OPC and Dalton on the tender provisions trigger date. Valid notices of tender from OPC and Dalton would require Georgia Power to pay 100% of their respective remaining shares of the primary construction contractor and (ii) 67% for material amendments to the Services Agreement or agreements with the primary construction contractor or Southern Nuclear.

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(UNAUDITED)

The term sheet also confirms that thenecessary to complete Plant Vogtle Owners' sole recourse againstUnits 3 and 4. Georgia Power's incremental ownership interest will be calculated and conveyed to Georgia Power or Southern Nuclear for any action or inactionafter Plant Vogtle Units 3 and 4 are placed in connection with their performance as agent for the Vogtle Owners is limited to removal of Georgia Power and/or Southern Nuclear as agent, except in cases of willful misconduct.service.
The ultimate outcome of these matters cannot be determined at this time.
Regulatory Matters
In 2009, the Georgia PSC voted to certify construction of Plant Vogtle Units 3 and 4 with a certified capital cost of $4.418 billion. In addition, in 2009 the Georgia PSC approved inclusion of the Plant Vogtle Units 3 and 4 related CWIP accounts in rate base, and the State of Georgia enacted the Georgia Nuclear Energy Financing Act, which allows Georgia Power to recover financing costs for nuclear construction projects certified by the Georgia PSC.Plant Vogtle Units 3 and 4. Financing costs are recovered on all applicable certified costs through annual adjustments to the NCCR tariff by includingup to the related CWIP accounts in rate base during the construction period. Ascertified capital cost of September 30, 2017,$4.418 billion. At March 31, 2023, Georgia Power had recovered approximately $1.5$2.9 billion of financing costs. Financing costs related to capital costs above $4.418 billion are being recognized through AFUDC and are expected to be recovered through retail rates over the life of Plant Vogtle Units 3 and 4; however, Georgia Power expectsis not recording AFUDC related to file on November 1, 2017any capital costs in excess of the total deemed reasonable by the Georgia PSC (currently $7.3 billion) and not requested for rate recovery. In December 2022, the Georgia PSC approved Georgia Power's filing to increase the NCCR tariff by approximately $90$36 million annually, effective January 1, 2018, pending2023.
Georgia Power is required to file semi-annual VCM reports with the Georgia PSC approval.by February 28 and August 31 of each year. In 2013, in connection with the eighth VCM report, the Georgia PSC approved a stipulation between Georgia Power and the staff of the Georgia PSC to waive the requirement to amend the Plant Vogtle Units 3 and 4 certificate in accordance with the 2009 certification order until the completion of Plant Vogtle Unit 3, or earlier if deemed appropriate by the Georgia PSC and Georgia Power.
On December 20,In 2016, the Georgia PSC voted to approve a settlement agreement (Vogtle Cost Settlement Agreement) resolving certain prudency matters in connection with the fifteenth VCM report. In December 2017, the Georgia PSC voted to approve (and issued its related order on January 11, 2018) Georgia Power's seventeenth VCM report and modified the Vogtle Cost Settlement Agreement. The Vogtle Cost Settlement Agreement, as modified by the January 11, 2018 order, resolved the following prudence matters:regulatory matters related to Plant Vogtle Units 3 and 4: (i) none of the $3.3 billion of costs incurred through December 31, 2015 and reflected in the fourteenth VCM report willshould be disallowed from rate base on the basis of imprudence; (ii) the Contractor Settlement Agreement iswas reasonable and prudent and none of the amounts paid or to be$0.3 billion paid pursuant to the Contractor Settlement Agreement should be disallowed from rate base on the basis of imprudence; (iii) financing costs on verified and approved capital costs will be deemed prudent provided they are incurred prior to December 31, 2019 and December 31, 2020 for Plant Vogtle Units 3 and 4, respectively; and (iv) (a) the in-service capital cost forecast will be adjusted to $5.680 billion (Revised Forecast), which includes a contingency of $240 million above Georgia Power's then current forecast of $5.440 billion, (b) capital costs incurred up to the Revised Forecast will$5.68 billion would be presumed to be reasonable and prudent with the burden of proof on any party challenging such costs, and (c)(b) Georgia Power would have the burden to show that any capital costs above $5.68 billion were prudent, and (c) a revised capital cost forecast of $7.3 billion (after reflecting the Revised Forecast are reasonable and prudent. Underimpact of payments received under the terms of the Vogtle CostGuarantee Settlement Agreement and related customer refunds) was found reasonable; (iv) construction of Plant Vogtle Units 3 and 4 should be completed, with Southern Nuclear serving as project manager and Bechtel as primary contractor; (v) approved and deemed reasonable Georgia Power's revised schedule placing Plant Vogtle Units 3 and 4 in service in November 2021 and November 2022, respectively; (vi) confirmed that the certified in-service capitalrevised cost for purposes of calculatingforecast does not represent a cost cap and that a prudence proceeding on cost recovery will occur following Unit 4 fuel load, consistent with applicable Georgia law; (vii) reduced the NCCR tariff will remain at $4.418 billion. Construction capital costs above $4.418 billion will accrue AFUDC through the date each unit is placed in service. The ROE used to calculate the NCCR tariff was reduced(a) from 10.95% (the ROE rate setting point authorized by the Georgia PSC in the 2013 ARP)at that time) to 10.00% effective January 1, 2016. For purposes of the AFUDC calculation,2016, (b) from 10.00% to 8.30%, effective January 1, 2020, and (c) from 8.30% to 5.30%, effective January 1, 2021 (provided that the ROE on costs between $4.418 billion and $5.440 billionin no case will also be 10.00% and the ROE on any amounts above $5.440 billion would beless than Georgia Power's average cost of long-term debt. Ifdebt); (viii) reduced the Georgia PSC adjusts Georgia Power's ROE rate setting point in a rate case prior toused for AFUDC equity for Plant Vogtle Units 3 and 4 being placed intofrom 10.00% to Georgia Power's average cost of long-term debt, effective January 1, 2018; and (ix) agreed that effective the first month after Unit 3 reaches commercial operation, retail rate base thenrates would be adjusted to include the ROEcosts related to Unit 3 and common facilities deemed prudent in the Vogtle Cost Settlement Agreement (see Note 2 to the financial statements under "Georgia Power – Plant Vogtle Unit 3 and Common Facilities Rate Proceeding" in Item 8 of the Form 10-K for purposes of calculating both the NCCR tariff and AFUDC will likewise be 95 basis points lower than the revised ROE rate setting point. Ifadditional information). The January 11, 2018 order also stated that if Plant Vogtle Units 3 and 4 are not placed in servicecommercially operational by December 31, 2020, then (i)June 1, 2021 and June 1, 2022, respectively, the ROE for purposes of calculatingused to calculate the NCCR tariff will be further reduced an additional 300by 10 basis points or $8 million pereach month and may, at the Georgia PSC's discretion, be accrued
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(but not lower than Georgia Power's average cost of long-term debt.debt) until the respective Unit is commercially operational. The ROE reductions negatively impacted earnings by approximately $300 million in 2022 and are estimated to have negative earnings impacts of approximately $270 million in 2023 and $60 million in 2024. In its January 11, 2018 order, the Georgia PSC also stated if other conditions change and assumptions upon which Georgia Power's seventeenth VCM report are based do not materialize, the Georgia PSC reserved the right to reconsider the decision to continue construction.
In the August 2021 order approving the twenty-fourth VCM report, the Georgia PSC approved a stipulation addressing the following matters: (i) beginning with its twenty-fifth VCM report, Georgia Power will continue to report to the Georgia PSC all costs incurred during the period for review and will request for approval costs up to the $7.3 billion determined to be reasonable in the Georgia PSC's seventeenth VCM order and (ii) Georgia Power will not seek rate recovery of the $0.7 billion increase to the base capital cost forecast included in the nineteenth VCM report and charged to income by Georgia Power in the second quarter 2018. In addition, the stipulation confirms Georgia Power may request verification and approval of costs above $7.3 billion for inclusion in rate base at a later time, but no earlier than the prudence review contemplated by the seventeenth VCM order described previously.
The Georgia PSC has approved sixteen25 VCM reports covering the periods through December 31, 2016, includingJune 30, 2021. These reports reflect total construction capital costs incurred of $7.9 billion (net of $1.7 billion of payments received under the Guarantee Settlement Agreement and approximately $188 million in related customer refunds), of which the Georgia PSC has verified and approved $7.3 billion as described above. The Georgia PSC also has reviewed two additional VCM reports, which reflected $1.1 billion of additional construction capital costs incurred through that date totaled $3.9 billion.June 30, 2022. Georgia Power filed its seventeenthtwenty-eighth VCM report coveringwith the period from January 1 through June 30, 2017, requesting approval of $542Georgia PSC on February 16, 2023, which reflected the revised capital cost forecast described above and $461 million of construction capital costs incurred during that period, with the Georgia PSC on Augustfrom July 1, 2022 through December 31, 2017.
In the seventeenth VCM report, Georgia Power recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and 4 is by November 2021 for Unit 3 and by November 2022 for Unit 4. Georgia Power's recommendation to go forward with completion of Vogtle Units 3 and 4 is based on the following assumptions about the regulatory treatment of this recommendation, if the recommendation to go forward

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is adopted by the Georgia PSC: (i) that pursuant to Georgia law, the Georgia PSC in the seventeenth VCM proceeding approves the new cost and schedule forecast and finds that it is a reasonable basis for going forward, and that if the Georgia PSC disapproves all or part of the proposed cost and schedule revisions, Georgia Power may cancel Plant Vogtle Units 3 and 4 and recover its actual investment in Plant Vogtle Units 3 and 4; (ii) that the Vogtle Cost Settlement Agreement remains in full force and effect, including Georgia Power retaining the burden of proving all capital costs above $5.680 billion were prudent; (iii) that while the Georgia PSC will make no prudence finding in the seventeenth VCM proceeding, nor will the certified amount be amended consistent with the Vogtle Cost Settlement Agreement, the Georgia PSC recognizes that the certified amount is not a cap, and all costs that are approved and presumed or shown to be prudently incurred will be recoverable by Georgia Power; (iv) that Georgia Power is not a guarantor of the Toshiba Guarantee, and the failure of Toshiba to pay the Toshiba Guarantee, the failure of the U.S. Congress to extend the PTCs for Plant Vogtle Units 3 and 4, or the failure of the DOE to extend the Loan Guarantee Agreement with Georgia Power to reflect the increased capital amounts, will not reduce the amount of investment Georgia Power is otherwise allowed to collect; and (v) that as conditions change and assumptions are either proven or disproven, Georgia Power and the Georgia PSC may reconsider the decision to go forward. The Georgia PSC is expected to make a decision on these matters by February 6, 2018.2022.
The ultimate outcome of these matters cannot be determined at this time.
Revised Cost
Mississippi Power
Performance Evaluation Plan
On March 15, 2023, Mississippi Power submitted its annual retail PEP filing for 2023 to the Mississippi PSC indicating no change in retail rates. The ultimate outcome of this matter cannot be determined at this time.
Ad Valorem Tax Adjustment
On March 31, 2023, Mississippi Power submitted its annual ad valorem tax adjustment filing for 2023, which requested a $7 million annual decrease in revenues. The ultimate outcome of this matter cannot be determined at this time.
Environmental Compliance Overview Plan
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual ECO Plan filing, resulting in a $3 million annual increase in revenues effective with the first billing cycle of May 2023.
System Restoration Rider
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual SRR filing, which indicated no change in retail rates. Mississippi Power's minimum annual SRR accrual was increased from $8 million to $12 million.
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Southern Company Gas
Infrastructure Replacement Programs and ScheduleCapital Projects
Georgia Power's approximate proportionate shareCapital expenditures incurred under specific infrastructure replacement programs and capital projects during the first three months of the remaining estimated cost to complete Plant Vogtle Units 3 and 4 is2023 were as follows:
 (in billions)
Estimated cost to complete$4.2
CWIP as of September 30, 20174.6
Guarantee Obligations(1.7)
Estimated capital costs$7.1
Vogtle Cost Settlement Agreement Revised Forecast(5.7)
Estimated net additional capital costs$1.4
Georgia Power's estimated financing costs during the construction period total approximately $3.4 billion, of which approximately $1.5 billion had been incurred through September 30, 2017.
Georgia Power's cancellation cost estimate results indicate that its proportionate share of the estimated costs to cancel both units is approximately $350 million. As a result, as of September 30, 2017, total estimated costs subject to evaluation by Georgia Power and the Georgia PSC in the event of a cancellation decision are as follows:
 Cancellation Cost Estimate
 (in billions)
CWIP as of September 30, 2017$4.6
Financing costs collected, net of tax1.5
Cancellation costs(*)
0.4
Guarantee Obligations(1.7)
Estimated net cancellation cost$4.8
(*)UtilityThe estimate for cancellation costs includes, but is not limited to, costs to terminate contracts for construction and other services, as well as costs to secure the Plant Vogtle Units 3 and 4 construction site.Program
Three Months
Ended
March 31, 2023
(in millions)
Nicor GasInvesting in Illinois$62 
Virginia Natural GasSAVE20 
Atlanta Gas LightSystem Reinforcement Rider32 
Chattanooga GasPipeline Replacement Program
Total$115 
(C) CONTINGENCIES
See Note 3 to the financial statements in Item 8 of the Form 10-K for information relating to various lawsuits and other contingencies.
General Litigation Matters
The Guarantee Obligations continue to existRegistrants are involved in various matters being litigated and regulatory matters. The ultimate outcome of such pending or potential litigation or regulatory matters against each Registrant and any subsidiaries cannot be determined at this time; however, for current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on such Registrant's financial statements.
The Registrants believe the pending legal challenges discussed below have no merit; however, the ultimate outcome of these matters cannot be determined at this time.
Alabama Power
In September 2022, Mobile Baykeeper filed a citizen suit in the eventU.S. District Court for the Southern District of cancellation. Alabama alleging that Alabama Power's plan to close the Plant Barry ash pond utilizing a closure-in-place methodology violates the Resource Conservation and Recovery Act (RCRA) and regulations governing CCR. Among other relief requested, Mobile Baykeeper seeks a declaratory judgment that the RCRA and regulations governing CCR are being violated, preliminary and injunctive relief to prevent implementation of Alabama Power's closure plan and the development of a closure plan that satisfies regulations governing CCR requirements. On December 19, 2022, Alabama Power filed a motion to dismiss the case. On January 31, 2023, the EPA issued a Notice of Potential Violations associated with Alabama Power's plan to close the Plant Barry ash pond. Alabama Power submitted responses on March 20, 2023, March 24, 2023, and April 3, 2023 affirming its position that it is in compliance with CCR requirements. The ultimate outcome of these matters cannot be determined at this time but could have an impact on Alabama Power's ARO estimates. See Note 6 to the financial statements in Item 8 of the Form 10-K for a discussion of Alabama Power's ARO liabilities.
Georgia Power
Municipal Franchise Fees
In addition, under Georgia law, prudently incurred costs related to certificated projects cancelled by the Georgia PSC are allowed recovery, including carrying

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costs, in future retail rates.2011, plaintiffs filed a putative class action against Georgia Power will continue working within the Superior Court of Fulton County, Georgia alleging that Georgia Power's collection in rates of amounts for municipal franchise fees (which fees are paid to municipalities) exceeded the amounts allowed in orders of the Georgia PSC and alleging certain state law
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claims. This case has been ruled upon and appealed numerous times over the other Vogtle Ownerslast several years. In 2019, the Georgia PSC issued an order that found Georgia Power has appropriately implemented the municipal franchise fee schedule. In March 2021, the Superior Court of Fulton County granted class certification and Georgia Power's motion for summary judgment and the plaintiffs filed a notice of appeal. In April 2021, Georgia Power filed a notice of cross appeal on the issue of class certification. In December 2021, the Georgia Court of Appeals affirmed the Superior Court's ruling that granted summary judgment to determine future actions related to Plant Vogtle Units 3Georgia Power and 4, including, but not limiteddismissed Georgia Power's cross appeal on the issue of class certification as moot. Also in December 2021, the plaintiffs filed a petition for writ of certiorari to the statusGeorgia Supreme Court, which was denied on January 27, 2023. On February 6, 2023, the plaintiffs filed a motion for reconsideration with the Georgia Supreme Court, which was denied on February 16, 2023. This matter is now concluded.
Plant Scherer
In July 2020, a group of individual plaintiffs filed a complaint, which was amended in December 2022, in the Superior Court of Fulton County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer has impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs seek an unspecified amount of monetary damages including punitive damages, a medical monitoring fund, and injunctive relief. Georgia Power has filed multiple motions to dismiss the complaint. In December 2022, the Superior Court of Fulton County, Georgia granted Georgia Power's motion to transfer the case to the Superior Court of Monroe County, Georgia.
In October 2021 and February 2022, a total of seven additional complaints were filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that releases from Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs sought an unspecified amount of monetary damages including punitive damages. In November 2021 and March 2022, Georgia Power removed these cases to the U.S. District Court for the Middle District of Georgia. In November 2022, the plaintiffs voluntarily dismissed their complaints without prejudice. Georgia Power anticipates that these plaintiffs will refile their complaints.
On January 9, 2023, an additional complaint was filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries. The plaintiff sought an unspecified amount of monetary damages, including punitive damages. On January 19, 2023, Georgia Power filed a notice to remove the case to the U.S. District Court for the Middle District of Georgia. On February 21, 2023, the plaintiff voluntarily dismissed the complaint without prejudice. Georgia Power anticipates that this plaintiff will refile the complaint.
The amount of any possible losses from these matters cannot be estimated at this time.
Mississippi Power
In 2018, Ray C. Turnage and 10 other individual plaintiffs filed a putative class action complaint against Mississippi Power and the three then-serving members of the Mississippi PSC in the U.S. District Court for the Southern District of Mississippi, which was amended in March 2019 to include four additional plaintiffs. Mississippi Power received Mississippi PSC approval in 2013 to charge a mirror CWIP rate recovery.premised upon including in its rate base pre-construction and construction costs for the Kemper IGCC prior to placing the Kemper IGCC into service. The Mississippi Supreme Court reversed that approval and ordered Mississippi Power to refund the amounts paid by customers under the previously-approved mirror CWIP rate. The plaintiffs allege that the initial approval process, and the amount approved, were improper and make claims for gross negligence, reckless conduct, and intentional wrongdoing. They also allege that Mississippi Power underpaid customers by up to $23.5 million in the refund process by applying an incorrect interest rate. The plaintiffs seek to recover, on behalf of themselves and their putative class, actual damages, punitive damages, pre-judgment interest, post-judgment interest, attorney's fees, and costs. The district court dismissed the amended complaint; however, in March 2020, the plaintiffs filed a motion seeking to name the new members of the Mississippi PSC, the Mississippi Development Authority, and Southern Company as additional defendants and add a cause of action against all defendants based on a dormant commerce
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clause theory under the U.S. Constitution. In July 2020, the plaintiffs filed a motion for leave to file a third amended complaint, which included the same federal claims as the proposed second amended complaint, as well as several additional state law claims based on the allegation that Mississippi Power failed to disclose the annual percentage rate of interest applicable to refunds. In November 2020, the district court denied each of the plaintiffs' pending motions and entered final judgment in favor of Mississippi Power. In January 2021, the district court denied further motions by the plaintiffs to vacate the judgment and to file a revised second amended complaint. In February 2021, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. In March 2022, the U.S. Court of Appeals for the Fifth Circuit issued an opinion affirming the dismissal of the claims against the Mississippi PSC defendants but reversing the dismissal of the claims against Mississippi Power. In May 2022, the U.S. Court of Appeals for the Fifth Circuit denied a petition by Mississippi Power for a rehearing en banc and remanded the case to the U.S. District Court for the Southern District of Mississippi for further proceedings. In June 2022, Mississippi Power filed with the trial court a motion to dismiss the complaint with prejudice, which was granted on March 15, 2023. On March 28, 2023, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. An adverse outcome in this proceeding could have a material impact on Mississippi Power's financial statements.
Environmental Remediation
The Southern Company system must comply with environmental laws and regulations governing the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the natural gas distribution utilities in Illinois and Georgia have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental remediation costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.
Georgia Power's environmental remediation liability was $15 million at both March 31, 2023 and December 31, 2022. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such sites is expected.
Southern Company Gas' environmental remediation liability was $243 million and $256 million at March 31, 2023 and December 31, 2022, respectively, based on the estimated cost of environmental investigation and remediation associated with known former manufactured gas plant operating sites.
The ultimate outcome of these matters cannot be determined at this time.time; however, as a result of the regulatory treatment for environmental remediation expenses described above, the final disposition of these matters is not expected to have a material impact on the financial statements of the applicable Registrants.
Other MattersPerformance Evaluation Plan
As of September 30, 2017, GeorgiaOn March 15, 2023, Mississippi Power had borrowed $2.6 billion related to Plant Vogtle Units 3 and 4 costs through the Loan Guarantee Agreement and a multi-advance credit facility among Georgia Power, the DOE, and the FFB, which providessubmitted its annual retail PEP filing for borrowings of up to $3.46 billion, subject2023 to the satisfactionMississippi PSC indicating no change in retail rates. The ultimate outcome of certain conditions. On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion in additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOEthis matter cannot be assureddetermined at this time.
Ad Valorem Tax Adjustment
On March 31, 2023, Mississippi Power submitted its annual ad valorem tax adjustment filing for 2023, which requested a $7 million annual decrease in revenues. The ultimate outcome of this matter cannot be determined at this time.
Environmental Compliance Overview Plan
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual ECO Plan filing, resulting in a $3 million annual increase in revenues effective with the first billing cycle of May 2023.
System Restoration Rider
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual SRR filing, which indicated no change in retail rates. Mississippi Power's minimum annual SRR accrual was increased from $8 million to $12 million.
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Southern Company Gas
Infrastructure Replacement Programs and are subject toCapital Projects
Capital expenditures incurred under specific infrastructure replacement programs and capital projects during the negotiationfirst three months of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. 2023 were as follows:
UtilityProgram
Three Months
Ended
March 31, 2023
(in millions)
Nicor GasInvesting in Illinois$62 
Virginia Natural GasSAVE20 
Atlanta Gas LightSystem Reinforcement Rider32 
Chattanooga GasPipeline Replacement Program
Total$115 
(C) CONTINGENCIES
See Note 63 to the financial statements of Georgia Power under "DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K for information relating to various lawsuits and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information, including applicable covenants, events of default, mandatory prepayment events, and conditions to borrowing.other contingencies.
General Litigation Matters
The IRS has allocated PTCs to Plant Vogtle Units 3 and 4 which require that the applicable unit be placed in service prior to 2021. The net present value of Georgia Power's PTCs is estimated at approximately $400 million per unit.
There have been technical and procedural challenges to the construction and licensing of Plant Vogtle Units 3 and 4 at the federal and state level and additional challenges may arise while construction proceeds. ProcessesRegistrants are in place that are designed to assure compliance with the requirements specified in the Westinghouse Design Control Document and the combined construction and operating licenses, including inspections by Southern Nuclear and the NRC that occur throughout construction. As a result of such compliance processes, certain license amendment requests have been filed and approved or are pending before the NRC. Various design and other licensing-based compliance matters, including the timely resolution of Inspections, Tests, Analyses, and Acceptance Criteria and the related approvals by the NRC, may arise while construction proceeds, which may result in additional license amendments or require other resolution. If any license amendment requests or other licensing-based compliance issues are not resolved in a timely manner, there may be delays in the project schedule that could result in increased costs.
While construction continues, the risk remains that challenges with management of contractors, subcontractors, and vendors, labor productivity, fabrication, delivery, assembly, and installation of plant systems, structures, and components, or other issues could arise and may further impact project schedule and cost.
The ultimate outcome of these matters cannot be determined at this time.
See RISK FACTORS of Georgia Power in Item 1A of the Form 10-K for a discussion of certain risks associated with the licensing, construction, and operation of nuclear generating units, including potential impacts that could result from a major incident at a nuclear facility anywhere in the world. See additional risks in Item 1A herein regarding the EPC Contractor's bankruptcy.
Other Matters
Georgia Power is involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Georgia Power is subject to certain claims and legal actions arising in the ordinary course of business. Georgia Power's business activities are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements, such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions, CCR, and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.

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The ultimate outcome of such pending or potential litigation or regulatory matters against each Registrant and any subsidiaries cannot be predicteddetermined at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Georgiasuch Registrant's financial statements.
The Registrants believe the pending legal challenges discussed below have no merit; however, the ultimate outcome of these matters cannot be determined at this time.
Alabama Power
In September 2022, Mobile Baykeeper filed a citizen suit in the U.S. District Court for the Southern District of Alabama alleging that Alabama Power's financial statements. See Note (B)plan to close the Condensed Financial Statements herein forPlant Barry ash pond utilizing a discussionclosure-in-place methodology violates the Resource Conservation and Recovery Act (RCRA) and regulations governing CCR. Among other relief requested, Mobile Baykeeper seeks a declaratory judgment that the RCRA and regulations governing CCR are being violated, preliminary and injunctive relief to prevent implementation of various other contingencies, regulatory matters,Alabama Power's closure plan and other matters being litigated which may affect future earnings potential.
Georgiathe development of a closure plan that satisfies regulations governing CCR requirements. On December 19, 2022, Alabama Power regularly reviews its businessfiled a motion to transform and modernize. Primarily in response to changing customer expectations and payment patterns, including electronic payments and alternative payment locations, and ongoing efforts to increase overall operating efficiencies, Georgia Power initiateddismiss the closurecase. On January 31, 2023, the EPA issued a Notice of its remaining payment offices and an employee attrition plan affecting approximately 300 positions. ChargesPotential Violations associated with these activities did not have a material impactAlabama Power's plan to close the Plant Barry ash pond. Alabama Power submitted responses on Georgia Power's results of operations, financialMarch 20, 2023, March 24, 2023, and April 3, 2023 affirming its position or cash flows. The efficiencies gained are expected to place downward pressure on operating costs in 2018.
ACCOUNTING POLICIES
Application of Critical Accounting Policies and Estimates
Georgia Power prepares its financial statements in accordance with GAAP. Significant accounting policies are described in Note 1 to the financial statements of Georgia Power in Item 8 of the Form 10-K. In the application of these policies, certain estimates are made that may have a material impact on Georgia Power's results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" of Georgia Power in Item 7 of the Form 10-K for a complete discussion of Georgia Power's critical accounting policies and estimates related to Utility Regulation, Asset Retirement Obligations, Pension and Other Postretirement Benefits, and Contingent Obligations.
Recently Issued Accounting Standards
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Georgia Power in Item 7 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standardit is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Georgia Power expects most of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. The majority of Georgia Power's revenue, including energy provided to customers, is from tariff offerings that provide electricity without a defined contractual term, as well as longer-term contractual commitments, including PPAs. Georgia Power expects that the revenue from contracts with these customers will not result in a significant shift in the timing of revenue recognition for such sales.
Georgia Power's ongoing evaluation of other revenue streams and related contracts includes unregulated sales to customers. Some revenue arrangements are excluded from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on Georgia Power's financial statements, if material. In addition, the power and utilities industry continues to evaluate other specific industry issues, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Georgia Power expects CIAC to be out of the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Georgia Power intends to use the modified retrospective method of adoption effective January 1, 2018. Georgia Power has

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also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in Georgia Power's financial statements, Georgia Power will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Georgia Power's operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Georgia Power's financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Georgia Power is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Georgia Power's financial statements.
FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Overview" of Georgia Power in Item 7 of the Form 10-K for additional information. Georgia Power's financial condition remained stable at September 30, 2017. Georgia Power intends to continue to monitor its access to short-term and long-term capital markets as well as bank credit agreements to meet future capital and liquidity needs. See "Capital Requirements and Contractual Obligations," "Sources of Capital," and "Financing Activities" herein for additional information.
Net cash provided from operating activities totaled $1.48 billion for the first nine months of 2017 compared to $2.27 billion for the corresponding period in 2016. The decrease was primarily due to the timing of vendor payments and fossil fuel stock purchases and an increase in under-recovered fuel costs. Net cash used for investing activities totaled $1.83 billion for the first nine months of 2017 compared to $1.76 billion for the corresponding period in 2016 primarily related to installation of equipment to comply with environmental standards and construction of generation, transmission, and distribution facilities. Net cash provided from financing activities totaled $617 million for the first nine months of 2017 compared to $528 million used for financing activities in the

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corresponding period in 2016. The increase in cash provided from financing activities is primarily due to an increase in short-term borrowings, higher issuances of senior notes and junior subordinated notes, and a decrease in maturities of senior notes, partially offset by a decrease in borrowings from the FFB for construction of Plant Vogtle Units 3 and 4 and an increase in redemptions of short-term borrowings. Cash flows from financing activities vary from period to period based on capital needs and the maturity or redemption of securities.
Significant balance sheet changes for the first nine months of 2017 include increases of $1.2 billion in property, plant, and equipment to comply with environmental standards and the construction of generation, transmission, and distribution facilities, $1.2 billion in long-term debt primarily due to issuances of senior notes and junior subordinated notes, $423 million in accounts payable, other primarily due to charges for restoration costs related to Hurricane Irma and liabilities for the removal of subcontractor liens related to the EPC Contractor's bankruptcy, and $423 million in paid-in capital primarily due to capital contributions received from Southern Company. See FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Storm Damage Recovery" and " – Nuclear Construction" for additional information regarding Hurricane Irma and the EPC Contractor's bankruptcy, respectively.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Georgia Power in Item 7 of the Form 10-K for a description of Georgia Power's capital requirements for its construction program, including estimated capital expenditures for Plant Vogtle Units 3 and 4 and to comply with existing environmental statutes and regulations, scheduled maturities of long-term debt, as well as related interest, derivative obligations, preferred and preference stock dividends, leases, purchase commitments, and trust funding requirements. Approximately $261 million will be required through September 30, 2018 to fund maturities of long-term debt. See "Sources of Capital" herein for additional information. Also see FUTURE EARNINGS POTENTIAL – "Retail Regulatory MattersNuclear Construction" for additional information regarding Plant Vogtle Units 3 and 4.
The construction program is subject to periodic review and revision, and actual construction costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in load projections; changes in environmental statutes and regulations; the outcome of any legal challenges to the environmental rules; changes in generating plants, including unit retirements and replacements and adding or changing fuel sources at existing generating units, to meet regulatory requirements; changes in FERC rules and regulations; Georgia PSC approvals; changes in the expected environmental compliance program; changes in legislation; the cost and efficiency of construction labor, equipment, and materials; project scope and design changes; storm impacts; and the cost of capital. In addition, there can be no assurance that costs related to capital expenditures will be fully recovered. See Note 3 to the financial statements of Georgia Power under "Retail Regulatory Matters – Nuclear Construction" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerNuclear Construction" herein for information regarding additional factors that may impact construction expenditures, including Georgia Power's cost-to-complete and cancellation cost assessments for Plant Vogtle Units 3 and 4.
Sources of Capital
Georgia Power plans to obtain the funds required for construction and other purposes from sources similar to those used in the past, which were primarily from operating cash flows, short-term debt, external security issuances, term loans, equity contributions from Southern Company, and, to the extent available, borrowings from the FFB. However, the amount, type, and timing of any future financings, if needed, will depend upon regulatory approval, prevailing market conditions, and other factors. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" of Georgia Power in Item 7 of the Form 10-K for additional information.
In 2014, Georgia Power entered into the Loan Guarantee Agreement with the DOE, under which the proceeds of borrowings may be used to reimburse Georgia Power for Eligible Project Costs incurred in connection with its

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construction of Plant Vogtle Units 3 and 4. Under the Loan Guarantee Agreement, the DOE agreed to guarantee borrowings of up to $3.46 billion (not to exceed 70% of (i) Eligible Project Costs, less (ii) amounts received from Toshiba under the Guarantee Settlement Agreement and amounts received from the Westinghouse bankruptcy proceeding) to be made by Georgia Power under a multi-advance credit facility (FFB Credit Facility) among Georgia Power, the DOE, and the FFB. As of September 30, 2017, Georgia Power had borrowed $2.6 billion under the FFB Credit Facility. On July 27, 2017, Georgia Power entered into an amendment to the Loan Guarantee Agreement, which provides that further advances are conditioned upon the DOE's approval of any agreements entered into in replacement of the Vogtle 3 and 4 Agreement and satisfaction of certain other conditions.
On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion of additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOE cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. See Note 6 to the financial statements of Georgia Power under "DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information regarding the Loan Guarantee Agreement, including applicable covenants, events of default, mandatory prepayment events, and additional conditions to borrowing. Also see Note (B) to the Condensed Financial Statements under "Regulatory MattersGeorgia PowerNuclear Construction" herein for additional information regarding Plant Vogtle Units 3 and 4.
At September 30, 2017, Georgia Power's current liabilities exceeded current assets by $698 million. Georgia Power's current liabilities frequently exceed current assets because of scheduled maturities of long-term debt ($261 million at September 30, 2017) and the periodic use of short-term debt as a funding source ($400 million at September 30, 2017), as well as significant seasonal fluctuations in cash needs. Georgia Power intends to utilize operating cash flows, short-term debt, external security issuances, term loans, equity contributions from Southern Company, and, to the extent available, borrowings from the FFB to fund its short-term capital needs. Georgia Power has substantial cash flow from operating activities and access to the capital markets and financial institutions to meet liquidity needs.
At September 30, 2017, Georgia Power had approximately $266 million of cash and cash equivalents. Georgia Power's committed credit arrangement with banks at September 30, 2017 was $1.75 billion of which $1.73 billion was unused. In May 2017, Georgia Power amended its multi-year credit arrangement, which, among other things, extended the maturity date from 2020 to 2022.
This bank credit arrangement, as well as Georgia Power's term loan arrangements, contains a covenant that limits debt levels and contains a cross-acceleration provision to other indebtedness (including guarantee obligations) of Georgia Power. Such cross-acceleration provision to other indebtedness would trigger an event of default if Georgia Power defaulted on indebtedness, the payment of which was then accelerated. At September 30, 2017, Georgia Power was in compliance with this covenant. This bank credit arrangement does not contain a material adverse change clause at the time of borrowing.
Subject to applicable market conditions, Georgia Power expects to renew or replace this credit arrangement, as needed, prior to expiration. In connection therewith, Georgia Power may extend the maturity date and/or increase or decrease the lending commitments thereunder.
See Note 6 to the financial statements of Georgia Power under "Bank Credit Arrangements" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Bank Credit Arrangements" herein for additional information.
A portion of the unused credit with banks is allocated to provide liquidity support to Georgia Power's pollution control revenue bonds and commercial paper program.CCR requirements. The amount of variable rate pollution control revenue bonds outstanding requiring liquidity support as of September 30, 2017 was approximately $550 million as compared to $868 million at December 31, 2016. In June 2017, Georgia Power remarketed $318 million of variable rate pollution control bonds in index rate modes, reducing the liquidity support utilized under Georgia Power's bank

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credit arrangement. In addition, at September 30, 2017, Georgia Power had $509 million of pollution control revenue bonds outstanding that were required to be remarketed within the next 12 months. Subsequent to September 30, 2017, $40 millionultimate outcome of these pollution control revenue bonds which were in an index rate mode were remarketed to the public in a long-term fixed rate mode.
Georgia Power may also meet short-term cash needs through a Southern Company subsidiary organized to issue and sell commercial paper at the request and for the benefit of Georgia Power and the other traditional electric operating companies. Proceeds from such issuances for the benefit of Georgia Power are loaned directly to Georgia Power. The obligations of each traditional electric operating company under these arrangements are several and there is no cross-affiliate credit support. Commercial paper is included in notes payable in the balance sheets.
Details of short-term borrowings were as follows:
  Short-term Debt at September 30, 2017 
Short-term Debt During the Period(*)
  
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Average
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Maximum
Amount
Outstanding
  (in millions)   (in millions)   (in millions)
Commercial paper $
 % $109
 1.5% $428
Short-term bank debt 400
 2.0% 568
 2.0% 800
Total $400
 2.0% $677
 2.0%  
(*)Average and maximum amounts are based upon daily balances during the three-month period ended September 30, 2017.
Georgia Power believes the need for working capital can be adequately met by utilizing the commercial paper program, lines of credit, short-term bank notes, and operating cash flows.
Credit Rating Risk
At September 30, 2017, Georgia Power did not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change to BBB- and/or Baa3 or below. These contracts are for physical electricity purchases and sales, fuel purchases, fuel transportation and storage, energy price risk management, and transmission.
The maximum potential collateral requirements under these contracts at September 30, 2017 were as follows:
Credit RatingsMaximum Potential
Collateral
Requirements
 (in millions)
At BBB- and/or Baa3$87
Below BBB- and/or Baa3$1,021
Included in these amounts are certain agreements that could require collateral in the event that Georgia Power or Alabama Power has a credit rating change to below investment grade. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of Georgia Power to access capital markets and would be likely to impact the cost at which it does so.
On March 20, 2017, Moody's revised its rating outlook for Georgia Power from stable to negative.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including Georgia Power) from stable to negative.

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On March 30, 2017, Fitch placed the ratings of Georgia Power on rating watch negative.
Financing Activities
In March 2017, Georgia Power issued $450 million aggregate principal amount of Series 2017A 2.00% Senior Notes due March 30, 2020 and $400 million aggregate principal amount of Series 2017B 3.25% Senior Notes due March 30, 2027. The proceeds were used to repay a portion of Georgia Power's short-term indebtedness and for general corporate purposes, including Georgia Power's continuous construction program.
In April 2017, Georgia Power purchased and held $27 million aggregate principal amount of Development Authority of Burke County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Vogtle Project), Fifth Series 1995. Subsequent to September 30, 2017, Georgia Power remarketed these bonds to the public.
In June 2017, Georgia Power repaid at maturity $450 million aggregate principal amount of Series 2007B 5.70% Senior Notes.
In June 2017, Georgia Power entered into three floating rate bank loans in aggregate principal amounts of $50 million, $150 million, and $100 million, with maturity dates of December 1, 2017, May 31, 2018, and June 28, 2018, respectively, which bear interest based on one-month LIBOR. Also in June 2017, Georgia Power borrowed $500 million pursuant to an uncommitted bank credit arrangement, which bears interest at a rate agreed upon by Georgia Power and the bank from time to time and is payable on no less than 30 days' demand by the bank. The proceeds from these bank loans were used to repay a portion of Georgia Power's existing indebtedness and for working capital and other general corporate purposes, including Georgia Power's continuous construction program.
In August 2017, Georgia Power repaid $250 million of the $500 million aggregate principal amount outstanding pursuant to its uncommitted bank credit arrangement. Also in August 2017, Georgia Power amended its $100 million floating rate bank loan to extend the maturity date from June 28, 2018 to October 26, 2018.
Also in August 2017, Georgia Power issued $500 million aggregate principal amount of Series 2017C 2.00% Senior Notes due September 8, 2020. The proceeds were used to repay Georgia Power's $50 million floating rate bank loan due December 1, 2017 and outstanding commercial paper borrowings and for general corporate purposes.
Also in August 2017, Georgia Power purchased and held $38 million aggregate principal amount of Development Authority of Bartow County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Bowen Project), First Series 1997. Subsequent to September 30, 2017, Georgia Power remarketed these bonds to the public.
In September 2017, Georgia Power issued $270 million aggregate principal amount of Series 2017A 5.00% Junior Subordinated Notes due October 1, 2077. The proceeds were used in October 2017 to redeem all 1.8 million shares ($45 million aggregate liquidation amount) of Georgia Power's 6.125% Series Class A Preferred Stock and 2.25 million shares ($225 million aggregate liquidation amount) of Georgia Power's 6.50% Series 2007A Preference Stock.
In addition to any financings that may be necessary to meet capital requirements and contractual obligations, Georgia Power plans to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.

GULF POWER COMPANY

GULF POWER COMPANY
CONDENSED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017
2016 2017 2016
 (in millions) (in millions)
Operating Revenues:       
Retail revenues$375
 $377
 $972
 $978
Wholesale revenues, non-affiliates14
 17
 44
 48
Wholesale revenues, affiliates28
 23
 75
 59
Other revenues20
 19
 53
 51
Total operating revenues437
 436
 1,144
 1,136
Operating Expenses:       
Fuel127
 141
 323
 342
Purchased power, non-affiliates37
 33
 104
 95
Purchased power, affiliates2
 3
 13
 9
Other operations and maintenance81
 86
 252
 239
Depreciation and amortization42
 49
 95
 129
Taxes other than income taxes33
 34
 88
 93
Loss on Plant Scherer Unit 3
 
 33
 
Total operating expenses322
 346
 908
 907
Operating Income115
 90
 236
 229
Other Income and (Expense):       
Interest expense, net of amounts capitalized(13) (11) (37) (36)
Other income (expense), net1
 (2) 
 (4)
Total other income and (expense)(12) (13) (37) (40)
Earnings Before Income Taxes103
 77
 199
 189
Income taxes40
 30
 78
 74
Net Income63
 47
 121
 115
Dividends on Preference Stock
 2
 4
 7
Net Income After Dividends on Preference Stock$63
 $45
 $117
 $108
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Net Income$63
 $47
 $121
 $115
Other comprehensive income (loss):       
Qualifying hedges:       
Changes in fair value, net of tax of $-, $-, $(1), and $(3), respectively
 
 (1) (4)
Total other comprehensive income (loss)
 
 (1) (4)
Comprehensive Income$63
 $47
 $120
 $111
The accompanying notes as they relate to Gulf Power are an integral part of these condensed financial statements.

GULF POWER COMPANY
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Nine Months Ended September 30,
 2017 2016
 (in millions)
Operating Activities:   
Net income$121
 $115
Adjustments to reconcile net income to net cash provided from operating activities —   
Depreciation and amortization, total100
 134
Deferred income taxes57
 15
Loss on Plant Scherer Unit 333
 
Other, net(5) (2)
Changes in certain current assets and liabilities —   
-Receivables(65) (9)
-Fossil fuel stock7
 49
-Other current assets11
 3
-Accrued taxes21
 40
-Accrued compensation(10) (5)
-Over recovered regulatory clause revenues(8) 26
-Other current liabilities10
 8
Net cash provided from operating activities272
 374
Investing Activities:   
Property additions(142) (106)
Cost of removal, net of salvage(16) (8)
Change in construction payables(9) (7)
Other investing activities(6) (6)
Net cash used for investing activities(173) (127)
Financing Activities:   
Decrease in notes payable, net(268) (42)
Proceeds —   
Common stock issued to parent175
 
Capital contributions from parent company7
 10
Senior notes300
 
Redemptions —   
Preference stock(150) 
Senior notes(85) (125)
Payment of common stock dividends(94) (90)
Other financing activities(3) (5)
Net cash used for financing activities(118) (252)
Net Change in Cash and Cash Equivalents(19) (5)
Cash and Cash Equivalents at Beginning of Period56
 74
Cash and Cash Equivalents at End of Period$37
 $69
Supplemental Cash Flow Information:   
Cash paid during the period for —   
Interest (net of $- and $- capitalized for 2017 and 2016, respectively)$24
 $29
Income taxes, net19
 14
Noncash transactions — Accrued property additions at end of period25
 13
The accompanying notes as they relate to Gulf Power are an integral part of these condensed financial statements.

GULF POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Assets At September 30, 2017 At December 31, 2016
  (in millions)
Current Assets:    
Cash and cash equivalents $37
 $56
Receivables —    
Customer accounts receivable 96
 72
Unbilled revenues 68
 55
Under recovered regulatory clause revenues 15
 17
Income taxes receivable, current 15
 
Other accounts and notes receivable 12
 6
Affiliated 13
 17
Accumulated provision for uncollectible accounts (1) (1)
Fossil fuel stock 64
 71
Materials and supplies 58
 55
Other regulatory assets, current 55
 44
Other current assets 15
 30
Total current assets 447
 422
Property, Plant, and Equipment:    
In service 5,181
 5,140
Less: Accumulated provision for depreciation 1,457
 1,382
Plant in service, net of depreciation 3,724
 3,758
Construction work in progress 75
 51
Total property, plant, and equipment 3,799
 3,809
Deferred Charges and Other Assets:    
Deferred charges related to income taxes 56
 58
Other regulatory assets, deferred 499
 512
Other deferred charges and assets 22
 21
Total deferred charges and other assets 577
 591
Total Assets $4,823
 $4,822
The accompanying notes as they relate to Gulf Power are an integral part of these condensed financial statements.


GULF POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's Equity At September 30, 2017 At December 31, 2016
  (in millions)
Current Liabilities:    
Securities due within one year $7
 $87
Notes payable 
 268
Accounts payable —    
Affiliated 46
 59
Other 55
 54
Customer deposits 35
 35
Accrued taxes 41
 20
Accrued interest 20
 8
Accrued compensation 30
 40
Deferred capacity expense, current 22
 22
Other regulatory liabilities, current 1
 16
Other current liabilities 37
 40
Total current liabilities 294
 649
Long-term Debt 1,285
 987
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 1,003
 948
Employee benefit obligations 90
 96
Deferred capacity expense 103
 119
Asset retirement obligations, deferred 125
 120
Other cost of removal obligations 218
 249
Other regulatory liabilities, deferred 45
 47
Other deferred credits and liabilities 71
 71
Total deferred credits and other liabilities 1,655
 1,650
Total Liabilities 3,234
 3,286
Preference Stock 
 147
Common Stockholder's Equity:    
Common stock, without par value —    
Authorized — 20,000,000 shares    
Outstanding — September 30, 2017: 7,392,717 shares    
                    — December 31, 2016: 5,642,717 shares 678
 503
Paid-in capital 600
 589
Retained earnings 312
 296
Accumulated other comprehensive income (loss) (1) 1
Total common stockholder's equity 1,589
 1,389
Total Liabilities and Stockholder's Equity $4,823
 $4,822
The accompanying notes as they relate to Gulf Power are an integral part of these condensed financial statements.

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THIRD QUARTER 2017 vs. THIRD QUARTER 2016
AND
YEAR-TO-DATE 2017 vs. YEAR-TO-DATE 2016


OVERVIEW
Gulf Power operates as a vertically integrated utility providing electric service to retail customers within its traditional service territory located in northwest Florida and to wholesale customers in the Southeast.
Many factors affect the opportunities, challenges, and risks of Gulf Power's business of providing electric service. These factors include the ability to maintain a constructive regulatory environment, to maintain and grow energy sales, and to effectively manage and secure timely recovery of costs. These costs include those related to projected long-term demand growth, stringent environmental standards, reliability, restoration following major storms, fuel, and capital expenditures. Gulf Power has various regulatory mechanisms that operate to address cost recovery. Effectively operating pursuant to these regulatory mechanisms and appropriately balancing required costs and capital expenditures with customer prices will continue to challenge Gulf Power for the foreseeable future.
On April 4, 2017, the Florida PSC approved a settlement agreement (2017 Rate Case Settlement Agreement) among Gulf Power and three intervenors with respect to Gulf Power's request to increase retail base rates. Among the terms of the 2017 Rate Case Settlement Agreement, Gulf Power increased rates effective with the first billing cycle in July 2017 to provide an annual overall net customer impact of approximately $54.3 million. The net customer impact consisted of a $62.0 million increase in annual base revenues less an annual equivalent credit of approximately $7.7 million for 2017 for certain wholesale revenues to be provided through December 2019 through the purchased power capacity cost recovery clause. In addition, Gulf Power continued its authorized retail ROE midpoint (10.25%) and range (9.25% to 11.25%), is deemed to have an equity ratio of 52.5% for all retail regulatory purposes, and implemented new dismantlement accruals effective July 1, 2017. Gulf Power will also begin amortizing the regulatory asset associated with the investment balances remaining after the retirement of Plant Smith Units 1 and 2 (357 MWs) over 15 years effective January 1, 2018 and will implement new depreciation rates effective January 1, 2018. The 2017 Rate Case Settlement Agreement also resulted in a $32.5 million write-down of Gulf Power's ownership of Plant Scherer Unit 3 (205 MWs), which was recorded in the first quarter 2017. The remaining issues related to the inclusion of Gulf Power's investment in Plant Scherer Unit 3 in retail rates have been resolved as a result of the 2017 Rate Case Settlement Agreement, including recoverability of certain costs associated with the ongoing ownership and operation of the unit through the environmental cost recovery clause rate approved by the Florida PSC in November 2016.
Gulf Power continues to focus on several key performance indicators including, but not limited to, customer satisfaction, plant availability, system reliability, and net income after dividends on preference stock.
RESULTS OF OPERATIONS
Net Income
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$18 40.0 $9 8.3
Gulf Power's net income after dividends on preference stock for the third quarter 2017 was $63 million compared to $45 million for the corresponding period in 2016. The increase was primarily due to an increase in retail base revenues and a decrease in depreciation.
Gulf Power's net income after dividends on preference stock for year-to-date 2017 was $117 million compared to $108 million for the corresponding period in 2016. The increase was primarily due to a decrease in depreciation and

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an increase in retail base revenues, partially offset by a write-down of $32.5 million ($20 million after tax) of Gulf Power's ownership of Plant Scherer Unit 3 resulting from the 2017 Rate Case Settlement Agreement and higher operations and maintenance expenses. See Note (B) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" herein for additional information regarding the 2017 Rate Case Settlement Agreement.
Retail Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(2) (0.5) $(6) (0.6)
In the third quarter 2017, retail revenues were $375 million compared to $377 million for the corresponding period in 2016. For year-to-date 2017, retail revenues were $972 million compared to $978 million for the corresponding period in 2016.
Details of the changes in retail revenues were as follows:
 Third Quarter 2017 Year-to-Date 2017
 (in millions) (% change) (in millions) (% change)
Retail – prior year$377
   $978
  
Estimated change resulting from –       
Rates and pricing21
 5.6
 28
 2.9
Sales growth3
 0.8
 1
 0.1
Weather(9) (2.4) (14) (1.4)
Fuel and other cost recovery(17) (4.5) (21) (2.2)
Retail – current year$375
 (0.5)% $972
 (0.6)%
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters" of Gulf Power in Item 7 and Note 1 to the financial statements of Gulf Power under "Revenues" and Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters" in Item 8 of the Form 10-K for additional information regarding Gulf Power's retail base rate case and cost recovery clauses, including Gulf Power's fuel cost recovery, purchased power capacity recovery, environmental cost recovery, and energy conservation cost recovery clauses.
Revenues associated with changes in rates and pricing increased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016 primarily due to an increase in retail base revenues effective July 2017, as well as an increase in environmental cost recovery effective November 2016 resulting from Gulf Power's ownership of Plant Scherer Unit 3 being rededicated to retail service.
Revenues attributable to changes in sales increased slightly in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016. For the third quarter 2017, weather-adjusted KWH sales to residential and commercial customers increased 5.2% and 1.5%, respectively. Weather-adjusted KWH sales to residential customers increased 1.3% year-to-date 2017. These increases were primarily due to customer growth, partially offset by lower customer usage primarily resulting from efficiency improvements in appliances and lighting. Weather-adjusted KWH sales to commercial customers decreased slightly year-to-date 2017 as a result of lower customer usage primarily resulting from efficiency improvements in appliances and lighting, mostly offset by customer growth. KWH sales to industrial customers decreased 7.1% and 6.1% for the third quarter and year-to-date 2017, respectively, primarily due to changes in customers' operations and energy efficiency improvements.
Fuel and other cost recovery revenues decreased in the third quarter and year-to-date 2017 when compared to the corresponding periods in 2016, primarily due to lower fuel, purchased power capacity, and energy conservation recoverable costs, partially offset by higher environmental recoverable costs. Fuel and other cost recovery

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provisions include fuel expenses, the energy component of purchased power costs, purchased power capacity costs, the difference between projected and actual costs and revenues related to energy conservation and environmental compliance, and a credit for certain wholesale revenues as a result of the 2017 Rate Case Settlement Agreement. See Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters – Cost Recovery Clauses" in Item 8 of the Form 10-K for additional information regarding cost recovery clauses and Note (B) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" herein for additional information regarding the 2017 Rate Case Settlement Agreement.
Wholesale Revenues – Non-Affiliates
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(3) (17.6) $(4) (8.3)
Wholesale revenues from sales to non-affiliates consist of long-term sales agreements to other utilities in Florida and Georgia and short-term opportunity sales. Capacity revenues from long-term sales agreements represent the greatest contribution to net income. The energy is generally sold at variable cost. Short-term opportunity sales are made at market-based rates that generally provide a margin above Gulf Power's variable cost of energy. Wholesale energy revenues from sales to non-affiliates will vary depending on fuel prices, the market prices of wholesale energy compared to the cost of Gulf Power's and the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation.
In the third quarter 2017, wholesale revenues from sales to non-affiliates were $14 million compared to $17 million for the corresponding period in 2016. The decrease was primarily due to a 28.4% decrease in KWH sales attributable to decreased market demand for energy as a result of milder weather.
For year-to-date 2017, wholesale revenues from sales to non-affiliates were $44 million compared to $48 million for the corresponding period in 2016. The decrease was primarily due to a 20.9% decrease in capacity revenues resulting from the expiration of a Plant Scherer Unit 3 long-term sales agreement in 2016.
Wholesale Revenues – Affiliates
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$5 21.7 $16 27.1
Wholesale revenues from sales to affiliated companies will vary depending on demand and the availability and cost of generating resources at each company. These affiliate sales are made in accordance with the IIC, as approved by the FERC. These transactions do not have a significant impact on earnings since the revenue related to these energy sales generally offsets the cost of energy sold.
In the third quarter 2017, wholesale revenues from sales to affiliates were $28 million compared to $23 million for the corresponding period in 2016. The increase was primarily due to a 24.1% increase in KWH sales resulting from outages of affiliate generation resources.
For year-to-date 2017, wholesale revenues from sales to affiliates were $75 million compared to $59 million for the corresponding period in 2016. The increase was primarily due to a 19.5% increase in KWH sales as a result of the availability of lower-cost Gulf Power generation resources.

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Fuel and Purchased Power Expenses
 Third Quarter 2017
vs.
Third Quarter 2016
 Year-to-Date 2017
vs.
Year-to-Date 2016
 (change in millions) (% change) (change in millions) (% change)
Fuel$(14) (9.9) $(19) (5.6)
Purchased power – non-affiliates4
 12.1
 9
 9.5
Purchased power – affiliates(1) (33.3) 4
 44.4
Total fuel and purchased power expenses$(11)   $(6)  
In the third quarter 2017, total fuel and purchased power expenses were $166 million compared to $177 million for the corresponding period in 2016. The decrease was primarily the result of a $7 million net decrease due to the lower average cost of fuel and a $6 million net decrease related to the volume of KWHs generated and purchased due to milder weather in 2017 reducing demand.
For year-to-date 2017, total fuel and purchased power expenses were $440 million compared to $446 million for the corresponding period in 2016. The decrease was primarily the result of a $19 million net decrease related to the volume of KWHs generated and purchased due to milder weather in 2017 reducing demand, partially offset by a $12 million net increase related to the higher average cost of fuel and purchased power.
Fuel and purchased power transactions do not have a significant impact on earnings since energy and capacity expenses are generally offset by energy and capacity revenues through Gulf Power's fuel and purchased power capacity cost recovery clauses and long-term wholesale contracts. See Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters – Cost Recovery Clauses – Retail Fuel Cost Recovery" and " – Purchased Power Capacity Recovery" in Item 8 of the Form 10-K for additional information.
Details of Gulf Power's generation and purchased power were as follows:
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 Year-to-Date 2016
Total generation (in millions of KWHs)
2,780 2,775 7,000 6,654
Total purchased power (in millions of KWHs)
1,686 1,906 4,362 5,295
Sources of generation (percent) –
       
Coal59 68 55 57
Gas41 32 45 43
Cost of fuel, generated (in cents per net KWH) –
       
Coal3.04 3.55 3.15 3.80
Gas3.71 4.38 3.60 4.06
Average cost of fuel, generated (in cents per net KWH)
3.31 3.81 3.35 3.91
Average cost of purchased power (in cents per net KWH)(*)
4.32 3.79 4.70 3.51
(*)Average cost of purchased power includes fuel purchased by Gulf Power for tolling agreements where power is generated by the provider.
Fuel
In the third quarter 2017, fuel expense was $127 million compared to $141 million for the corresponding period in 2016. The decrease was primarily due to a 13.1% decrease in the average cost of fuel resulting from lower coal and natural gas prices, partially offset by a 29.3% increase in the volume of KWHs generated by Gulf Power's gas-fired generation resources.

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For year-to-date 2017, fuel expense was $323 million compared to $342 million for the corresponding period in 2016. The decrease was primarily due to a 14.3% decrease in the average cost of fuel resulting from lower coal and natural gas prices, partially offset by a 10.3% increase in the volume of KWHs generated by Gulf Power's gas-fired generation resources.
Purchased Power – Non-Affiliates
In the third quarter 2017, purchased power expense from non-affiliates was $37 million compared to $33 million for the corresponding period in 2016. For year-to-date 2017, purchased power expense from non-affiliates was $104 million compared to $95 million for the corresponding period in 2016. These increases were primarily due to increases of 16.3% and 35.9% for the third quarter and year-to-date 2017, respectively, in the average cost per KWH purchased, partially offset by decreases of 11.1% and 20.2% for the third quarter and year-to-date 2017, respectively, in the volume of KWHs purchased due to lower territorial load.
Energy purchases from non-affiliates will vary depending on the market prices of wholesale energy as compared to the cost of the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation.
Purchased Power – Affiliates
In the third quarter 2017, purchased power expense from affiliates was $2 million compared to $3 million for the corresponding period in 2016. The decrease was primarily due to a 38.3% decrease in the average cost per KWH purchased primarily resulting from lower priced power pool resources and a 20.5% decrease in the volume of KWHs purchased due to lower territorial load.
For year-to-date 2017, purchased power expense from affiliates was $13 million compared to $9 million for the corresponding period in 2016. The increase was primarily due to a 13.2% increase in the volume of KWHs purchased due to more planned outages for Gulf Power generation resources and a 29.3% increase in the average cost per KWH purchased primarily due to increased natural gas prices.
Energy purchases from affiliates will vary depending on demand for energy and the availability and cost of generating resources at each company within the Southern Company system. These purchases are made in accordance with the IIC or other contractual agreements, as approved by the FERC.
Other Operations and Maintenance Expenses
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(5) (5.8) $13 5.4
In the third quarter 2017, other operations and maintenance expenses were $81 million compared to $86 million for the corresponding period in 2016. The decrease was primarily due to lower employee compensation and benefits, including pension costs, and the suspension of the property damage reserve accrual in accordance with the 2017 Rate Case Settlement Agreement.
For year-to-date 2017, other operations and maintenance expenses were $252 million compared to $239 million for the corresponding period in 2016. The increase was primarily due to higher expenses at generation facilities associated with routine and planned maintenance.
See Note (A) to the Condensed Financial Statements under "Property Damage Reserve" herein for additional information regarding Gulf Power's property damage reserve accrual suspension and Note (B) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" herein for additional information regarding the 2017 Rate Case Settlement Agreement.

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Depreciation and Amortization
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(7) (14.3) $(34) (26.4)
In the third quarter 2017, depreciation and amortization was $42 million compared to $49 million for the corresponding period in 2016. For year-to-date 2017, depreciation and amortization was $95 million compared to $129 million for the corresponding period in 2016. These decreases were primarily due to changes in the reductions in depreciation, as authorized in a settlement agreement approved by the Florida PSC in 2013 (2013 Rate Case Settlement Agreement), of $6 million and $34 million in the third quarter and year-to-date 2017, respectively, compared to the corresponding periods in 2016. See Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters – Retail Base Rate Case" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" herein for additional information.
Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$10 33.3 $4 5.4
In the third quarter 2017, income taxes were $40 million compared to $30 million for the corresponding period in 2016. For year-to-date 2017, income taxes were $78 million compared to $74 million for the corresponding period in 2016. These increases were primarily due to higher pre-tax earnings.
Dividends on Preference Stock
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(2) N/M $(3) (42.9)
N/M - Not meaningful
In the third quarter 2017, there were no dividends on preference stock compared to $2 million for the corresponding period in 2016. For year-to-date 2017, dividends on preference stock were $4 million compared to $7 million for the corresponding period in 2016. These decreases were the result of the redemption of all preference stock in June 2017. See FINANCIAL CONDITION AND LIQUIDITY – "Financing Activities" herein for additional information.
FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Gulf Power's future earnings potential. The level of Gulf Power's future earnings depends on numerous factors that affect the opportunities, challenges, and risks of Gulf Power's business of providing electric service. These factors include Gulf Power's ability to maintain a constructive regulatory environment that continues to allow for the timely recovery of prudently-incurred costs during a time of increasing costs and limited projected demand growth over the next several years. Future earnings will be driven primarily by customer growth. Earnings will also depend upon maintaining and growing sales, considering, among other things, the adoption and/or penetration rates of increasingly energy-efficient technologies due to changes in the minimum allowable equipment efficiencies along with the continuation of changes in customer behavior. Earnings are subject to a variety of other factors. These factors include weather, competition, energy conservation practiced by customers, the use of alternative energy sources by customers, the price of electricity, the price elasticity of demand, and the rate of economic growth or decline in Gulf Power's service territory. Demand for electricity is primarily driven by the pace of economic growth that may be affected by changes in regional and global economic conditions, which may impact future earnings. Current proposals related to

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potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals is dependent on the final form of any legislation enacted and the related transition rules andmatters cannot be determined at this time but could have a materialan impact on GulfAlabama Power's financial statements. For additional information relating to these issues, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL of Gulf Power in Item 7 of the Form 10-K.
Environmental Matters
Compliance costs related to federal and state environmental statutes and regulations could affect earnings if such costs cannot continue to be fully recovered in retail rates or through long-term wholesale agreements on a timely basis or through market-based contracts. The State of Florida has statutory provisions that allow a utility to petition the Florida PSC for recovery of prudent environmental compliance costs that are not being recovered through base rates or any other recovery mechanism. Gulf Power's current long-term wholesale agreements contain provisions that permit charging the customer with costs incurred as a result of changes in environmental laws and regulations. The full impact of any such legislative or regulatory changes cannot be determined at this time. Environmental compliance spending over the next several years may differ materially from the amounts estimated. The timing, specific requirements, and estimated costs could change as environmental statutes and regulations are adopted or modified, as compliance plans are revised or updated, and as legal challenges to rules are completed. Further, higher costs that are recovered through regulated rates or long-term wholesale agreements could contribute to reduced demand for electricity as well as impact the cost competitiveness of wholesale capacity, which could negatively affect results of operations, cash flows, and financial condition.ARO estimates. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Environmental Matters," "Retail Regulatory Matters – Cost Recovery Clauses – Environmental Cost Recovery," and "Other Matters" of Gulf Power in Item 7 and Note 36 to the financial statements of Gulf Power under "Environmental Matters" in Item 8 of the Form 10-K for additional information.a discussion of Alabama Power's ARO liabilities.
Environmental Statutes and Regulations
Water QualityGeorgia Power
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Water Quality" of GulfMunicipal Franchise Fees
In 2011, plaintiffs filed a putative class action against Georgia Power in Item 7the Superior Court of Fulton County, Georgia alleging that Georgia Power's collection in rates of amounts for municipal franchise fees (which fees are paid to municipalities) exceeded the amounts allowed in orders of the Form 10-KGeorgia PSC and alleging certain state law
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claims. This case has been ruled upon and appealed numerous times over the last several years. In 2019, the Georgia PSC issued an order that found Georgia Power has appropriately implemented the municipal franchise fee schedule. In March 2021, the Superior Court of Fulton County granted class certification and Georgia Power's motion for additional information regarding the final effluent guidelines rulesummary judgment and the final rule revisingplaintiffs filed a notice of appeal. In April 2021, Georgia Power filed a notice of cross appeal on the regulatory definitionissue of watersclass certification. In December 2021, the Georgia Court of Appeals affirmed the Superior Court's ruling that granted summary judgment to Georgia Power and dismissed Georgia Power's cross appeal on the issue of class certification as moot. Also in December 2021, the plaintiffs filed a petition for writ of certiorari to the Georgia Supreme Court, which was denied on January 27, 2023. On February 6, 2023, the plaintiffs filed a motion for reconsideration with the Georgia Supreme Court, which was denied on February 16, 2023. This matter is now concluded.
Plant Scherer
In July 2020, a group of individual plaintiffs filed a complaint, which was amended in December 2022, in the Superior Court of Fulton County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer has impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs seek an unspecified amount of monetary damages including punitive damages, a medical monitoring fund, and injunctive relief. Georgia Power has filed multiple motions to dismiss the complaint. In December 2022, the Superior Court of Fulton County, Georgia granted Georgia Power's motion to transfer the case to the Superior Court of Monroe County, Georgia.
In October 2021 and February 2022, a total of seven additional complaints were filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that releases from Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs sought an unspecified amount of monetary damages including punitive damages. In November 2021 and March 2022, Georgia Power removed these cases to the U.S. District Court for the Middle District of Georgia. In November 2022, the plaintiffs voluntarily dismissed their complaints without prejudice. Georgia Power anticipates that these plaintiffs will refile their complaints.
On January 9, 2023, an additional complaint was filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries. The plaintiff sought an unspecified amount of monetary damages, including punitive damages. On January 19, 2023, Georgia Power filed a notice to remove the case to the U.S. District Court for the Middle District of Georgia. On February 21, 2023, the plaintiff voluntarily dismissed the complaint without prejudice. Georgia Power anticipates that this plaintiff will refile the complaint.
The amount of any possible losses from these matters cannot be estimated at this time.
Mississippi Power
In 2018, Ray C. Turnage and 10 other individual plaintiffs filed a putative class action complaint against Mississippi Power and the three then-serving members of the Mississippi PSC in the U.S. District Court for the Southern District of Mississippi, which was amended in March 2019 to include four additional plaintiffs. Mississippi Power received Mississippi PSC approval in 2013 to charge a mirror CWIP rate premised upon including in its rate base pre-construction and construction costs for the Kemper IGCC prior to placing the Kemper IGCC into service. The Mississippi Supreme Court reversed that approval and ordered Mississippi Power to refund the amounts paid by customers under the previously-approved mirror CWIP rate. The plaintiffs allege that the initial approval process, and the amount approved, were improper and make claims for gross negligence, reckless conduct, and intentional wrongdoing. They also allege that Mississippi Power underpaid customers by up to $23.5 million in the refund process by applying an incorrect interest rate. The plaintiffs seek to recover, on behalf of themselves and their putative class, actual damages, punitive damages, pre-judgment interest, post-judgment interest, attorney's fees, and costs. The district court dismissed the amended complaint; however, in March 2020, the plaintiffs filed a motion seeking to name the new members of the Mississippi PSC, the Mississippi Development Authority, and Southern Company as additional defendants and add a cause of action against all Clean Water Act (CWA) programs.defendants based on a dormant commerce
On April 25, 2017,
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clause theory under the EPA publishedU.S. Constitution. In July 2020, the plaintiffs filed a motion for leave to file a third amended complaint, which included the same federal claims as the proposed second amended complaint, as well as several additional state law claims based on the allegation that Mississippi Power failed to disclose the annual percentage rate of interest applicable to refunds. In November 2020, the district court denied each of the plaintiffs' pending motions and entered final judgment in favor of Mississippi Power. In January 2021, the district court denied further motions by the plaintiffs to vacate the judgment and to file a revised second amended complaint. In February 2021, the plaintiffs filed a notice announcing it would reconsider the effluent guidelines rule, which had been finalized in November 2015. On September 18, 2017, the EPA published a final rule establishing a stay of the compliance deadlines for certain effluent limitations and pretreatment standards under the rule.
On June 27, 2017, the EPA and the U.S. Army Corps of Engineers proposed to rescind the final rule that revised the regulatory definition of waters of the U.S. for all CWA programs. The final rule has been stayed since October 2015 byappeal with the U.S. Court of Appeals for the SixthFifth Circuit. In March 2022, the U.S. Court of Appeals for the Fifth Circuit issued an opinion affirming the dismissal of the claims against the Mississippi PSC defendants but reversing the dismissal of the claims against Mississippi Power. In May 2022, the U.S. Court of Appeals for the Fifth Circuit denied a petition by Mississippi Power for a rehearing en banc and remanded the case to the U.S. District Court for the Southern District of Mississippi for further proceedings. In June 2022, Mississippi Power filed with the trial court a motion to dismiss the complaint with prejudice, which was granted on March 15, 2023. On March 28, 2023, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. An adverse outcome in this proceeding could have a material impact on Mississippi Power's financial statements.
Environmental Remediation
The Southern Company system must comply with environmental laws and regulations governing the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the natural gas distribution utilities in Illinois and Georgia have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental remediation costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.
Georgia Power's environmental remediation liability was $15 million at both March 31, 2023 and December 31, 2022. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such sites is expected.
Southern Company Gas' environmental remediation liability was $243 million and $256 million at March 31, 2023 and December 31, 2022, respectively, based on the estimated cost of environmental investigation and remediation associated with known former manufactured gas plant operating sites.
The ultimate outcome of these matters cannot be determined at this time.
Global Climate Issues
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Global Climate Issues" of Gulf Power in Item 7 of the Form 10-K for additional information.
On March 28, 2017, the U.S. President signed an executive order directing agencies to review actions that potentially burden the development or use of domestically produced energy resources. The executive order specifically directs the EPA to review the Clean Power Plan and final greenhouse gas emission standards for new, modified, and reconstructed electric generating units and, if appropriate, take action to suspend, revise, or rescind

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those rules. On October 16, 2017, the EPA published a proposed rule to repeal the Clean Power Plan. The EPA has not determined whether or when it will promulgate a replacement rule.
On June 1, 2017, the U.S. President announced that the United States will withdraw from the non-binding Paris Agreement and begin renegotiation of its terms.
The ultimate outcome of these matters cannot be determined at this time.
FERC Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters" of Gulf Power in Item 7 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' (including Gulf Power's) and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies (including Gulf Power) and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' (including Gulf Power's) and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' (including Gulf Power's) and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies (including Gulf Power) and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017 order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies (including Gulf Power) and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Retail Regulatory Matters
Gulf Power's rates and charges for service to retail customers are subject to the regulatory oversight of the Florida PSC. Gulf Power's rates are a combination of base rates and several separate cost recovery clauses for specific categories of costs. These separate cost recovery clauses address such items as fuel and purchased energy costs, purchased power capacity costs, energy conservation and demand side management programs, and the costs of compliance with environmental laws and regulations. Costs not addressed through one of the specific cost recovery clauses are recovered through base rates. See Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters" in Item 8 of the Form 10-K for additional information.
Retail Base Rate Cases
The 2013 Rate Case Settlement Agreement authorized Gulf Power to reduce depreciation and record a regulatory asset up to $62.5 million from January 2014 through June 2017. In any given month, such depreciation reduction could not exceed the amount necessary for the retail ROE, as reported to the Florida PSC monthly, to reach the midpoint of the authorized retail ROE range then in effect. For 2014 and 2015, Gulf Power recognized reductions in depreciation of $8.4 million and $20.1 million, respectively. No net reduction in depreciation was recorded in 2016. Through June 2017, Gulf Power recognized the remaining allowable reductions in depreciation totaling $34.0 million.
On April 4, 2017, the Florida PSC approved the 2017 Rate Case Settlement Agreement among Gulf Power and three intervenors with respect to Gulf Power's request to increase retail base rates. Among the terms of the 2017 Rate Case Settlement Agreement, Gulf Power increased rates effective with the first billing cycle in July 2017 to provide an annual overall net customer impact of approximately $54.3 million. The net customer impact consisted of a $62.0 million increase in annual base revenues less an annual equivalent credit of approximately $7.7 million for 2017 for

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certain wholesale revenues to be provided through December 2019 through the purchased power capacity cost recovery clause. In addition, Gulf Power continued its authorized retail ROE midpoint (10.25%) and range (9.25% to 11.25%), is deemed to have an equity ratio of 52.5% for all retail regulatory purposes, and implemented new dismantlement accruals effective July 1, 2017. Gulf Power will also begin amortizing the regulatory asset associated with the investment balances remaining after the retirement of Plant Smith Units 1 and 2 over 15 years effective January 1, 2018 and will implement new depreciation rates effective January 1, 2018. The 2017 Rate Case Settlement Agreement also resulted in a $32.5 million write-down of Gulf Power's ownership of Plant Scherer Unit 3, which was recorded in the first quarter 2017. The remaining issues related to the inclusion of Gulf Power's investment in Plant Scherer Unit 3 in retail rates have been resolvedtime; however, as a result of the 2017 Rate Case Settlement Agreement, including recoverability of certain costs associated withregulatory treatment for environmental remediation expenses described above, the ongoing ownership and operation of the unit through the environmental cost recovery clause rate approved by the Florida PSC in November 2016.
Cost Recovery Clauses
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters – Cost Recovery Clauses" of Gulf Power in Item 7 and Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters – Cost Recovery Clauses" in Item 8 of the Form 10-K for additional information regarding Gulf Power's recovery of retail costs through various regulatory clauses and accounting orders. Gulf Power has four regulatory clauses which are approved by the Florida PSC. See Note (B) to the Condensed Financial Statements herein for additional information.
As discussed previously, the 2017 Rate Case Settlement Agreement resolved the remaining issues related to Gulf Power's inclusion of certain costs associated with the ongoing ownership and operation of Plant Scherer Unit 3 in the environmental cost recovery clause and no adjustment to the environmental cost recovery clause rate approved by the Florida PSC in November 2016 was made.
On October 25, 2017, the Florida PSC approved Gulf Power's annual rate clause request for its fuel, purchased power capacity, environmental, and energy conservation cost recovery factors for 2018. The net effect of the approved changes is a $63 million increase in annual revenues effective in January 2018, the majority of which will be offset by related expense increases.
Renewables
In 2015, the Florida PSC approved three energy purchase agreements totaling 120 MWs of utility-scale solar generation located at three military installations in northwest Florida. Purchases under these agreements began in the summer of 2017.
Other Matters
Gulf Power is involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Gulf Power is subject to certain claims and legal actions arising in the ordinary course of business. Gulf Power's business activities are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements, such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions, CCR, and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.
The ultimate outcome of such pending or potential litigation or regulatory matters cannot be predicted at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Gulf Power's financial statements. See Note (B) to the Condensed Financial Statements herein for a discussion of various other contingencies, regulatory matters, and other matters being litigated which may affect future earnings potential.

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ACCOUNTING POLICIES
Application of Critical Accounting Policies and Estimates
Gulf Power prepares its financial statements in accordance with GAAP. Significant accounting policies are described in Note 1 to the financial statements of Gulf Power in Item 8 of the Form 10-K. In the applicationfinal disposition of these policies, certain estimates are made that may have a material impact on Gulf Power's results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" of Gulf Power in Item 7 of the Form 10-K for a complete discussion of Gulf Power's critical accounting policies and estimates related to Utility Regulation, Asset Retirement Obligations, Pension and Other Postretirement Benefits, and Contingent Obligations.
Recently Issued Accounting Standards
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Gulf Power in Item 7 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standard is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Gulf Power expects most of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. The majority of Gulf Power's revenue, including energy provided to customers, is from tariff offerings that provide electricity without a defined contractual term, as well as longer-term contractual commitments, including PPAs. Gulf Power expects that the revenue from contracts with these customers will not result in a significant shift in the timing of revenue recognition for such sales.
Gulf Power's ongoing evaluation of other revenue streams and related contracts includes unregulated sales to customers. Some revenue arrangements are excluded from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on Gulf Power's financial statements, if material. In addition, the power and utilities industry continues to evaluate other specific industry issues, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Gulf Power expects CIAC to be out of the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Gulf Power intends to use the modified retrospective method of adoption effective January 1, 2018. Gulf Power has also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment,matters is not expected to have a material impact on either the timing or amount of revenues recognized in Gulf Power's financial statements, Gulf Power will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit

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costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Gulf Power's operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Gulf Power's financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Gulf Power is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Gulf Power's financial statements.
FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Overview" of Gulf Power in Item 7 of the Form 10-K for additional information. Gulf Power's financial condition remained stable at September 30, 2017. Gulf Power intends to continue to monitor its access to short-term and long-term capital markets as well as bank credit agreements to meet future capital and liquidity needs. See "Capital Requirements and Contractual Obligations," "Sources of Capital," and "Financing Activities" herein for additional information.
Net cash provided from operating activities totaled $272 million for the first nine months of 2017 compared to $374 million for the corresponding period in 2016. The $102 million decrease in net cash was primarily due to decreases related to certain cost recovery clauses, the timing of fossil fuel stock purchases, and a federal income tax refund received in 2016. Net cash used for investing activities totaled $173 million in the first nine months of 2017 primarily due to property additions to utility plant. Net cash used for financing activities totaled $118 million for the first nine months of 2017 primarily due to the payment of short-term debt, redemptions of preference stock and long-term debt, and common stock dividend payments, partially offset by proceeds from issuances of long-term debt and common stock. Cash flows from financing activities vary from period to period based on capital needs and the maturity or redemption of securities.
Significant balance sheet changes for the first nine months of 2017 primarily reflect the financing activities described above. Other significant changes include an increase in accumulated deferred income taxes due to accelerated depreciation and repair deductions and a decrease in other cost of removal obligations, as authorized in the 2013 Rate Case Settlement Agreement. See "Financing Activities" herein and Note (B) to the Condensed Financial Statements under "Regulatory MattersGulf PowerRetail Base Rate Cases" herein for additional information.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Gulf Power in Item 7 of the Form 10-K for a description of Gulf Power's capital requirements for its construction program, including estimated capital expenditures to comply

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with existing environmental statutes and regulations, scheduled maturities of long-term debt, as well as related interest, leases, derivative obligations, purchase commitments, and trust funding requirements. Approximately $7 million will be required through September 30, 2018 to fund maturities of long-term debt. See "Financing Activities" herein for additional information.
The construction program is subject to periodic review and revision, and actual construction costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in load projections; storm impacts; changes in environmental statutes and regulations; the outcome of any legal challenges to the environmental rules; changes in generating plants, including unit retirements and replacements and adding or changing fuel sources at existing generating units, to meet regulatory requirements; changes in the expected environmental compliance programs; changes in FERC rules and regulations; Florida PSC approvals; changes in legislation; the cost and efficiency of construction labor, equipment, and materials; project scope and design changes; and the cost of capital. In addition, there can be no assurance that costs related to capital expenditures will be fully recovered.
Sources of Capital
Gulf Power plans to obtain the funds required to meet its future capital needs from sources similar to those used in the past, which were primarily from operating cash flows, short-term debt, external security issuances, term loans, and equity contributions from Southern Company. However, the amount, type, and timing of any future financings, if needed, will depend upon regulatory approval, prevailing market conditions, and other factors. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" of Gulf Power in Item 7 of the Form 10-K for additional information.
Gulf Power's current liabilities frequently exceed current assets because of the continued use of short-term debt as a funding source to meet scheduled maturities of long-term debt, as well as significant seasonal fluctuations in cash needs. Gulf Power has substantial cash flow from operating activities and access to the capital markets and financial institutions to meet short-term liquidity needs, including its commercial paper program which is supported by bank credit facilities.
At September 30, 2017, Gulf Power had approximately $37 million of cash and cash equivalents. Committed credit arrangements with banks at September 30, 2017 were as follows:
Expires     
Executable Term
Loans
 
Expires Within One
Year
2017 2018 2019 2020 Total Unused 
One
Year
 
Two
Years
 
Term
Out
 
No Term
Out
(in millions)
$30
 $195
 $25
 $30
 $280
 $280
 $45
 $
 $
 $40
See Note 6 to the financial statements of Gulf Power under "Bank Credit Arrangements" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Bank Credit Arrangements" herein for additional information.applicable Registrants.
Most of these bank credit arrangements contain covenants that limit debt levels and contain cross-acceleration provisions to other indebtedness (including guarantee obligations) of Gulf Power. Such cross-acceleration provisions to other indebtedness would trigger an event of default if Gulf Power defaulted on indebtedness, the payment of which was then accelerated. At September 30, 2017, Gulf Power was in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowings.
Subject to applicable market conditions, Gulf Power expects to renew or replace its bank credit arrangements, as needed, prior to expiration. In connection therewith, Gulf Power may extend the maturity dates and/or increase or decrease the lending commitments thereunder.

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Most of the unused credit arrangements with banks are allocated to provide liquidity support to Gulf Power's pollution control revenue bonds and commercial paper program. The amount of variable rate pollution control revenue bonds outstanding requiring liquidity support as of September 30, 2017 was approximately $82 million. In addition, at September 30, 2017, Gulf Power had approximately $140 million of fixed rate pollution control revenue bonds outstanding that were required to be remarketed within the next 12 months.
Gulf Power may also meet short-term cash needs through a Southern Company subsidiary organized to issue and sell commercial paper at the request and for the benefit of Gulf Power and the other traditional electric operating companies. Proceeds from such issuances for the benefit of Gulf Power are loaned directly to Gulf Power. The obligations of each traditional electric operating company under these arrangements are several and there is no cross-affiliate credit support. Short-term borrowings are included in notes payable in the balance sheets.
Details of short-term borrowings were as follows:
  
Short-term Debt During the Period(*)
  
Average
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Maximum
Amount
Outstanding
  (in millions)   (in millions)
Commercial paper $23
 1.4% $78
(*)Average and maximum amounts are based upon daily balances during the three-month period ended September 30, 2017. No short-term debt was outstanding at September 30, 2017.
Gulf Power believes the need for working capital can be adequately met by utilizing the commercial paper program, lines of credit, short-term bank loans, and operating cash flows.
Credit Rating Risk
At September 30, 2017, Gulf Power did not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change to BBB- and/or Baa3 or below. These contracts are for physical electricity purchases and sales, fuel transportation and storage, and energy price risk management.
The maximum potential collateral requirements under these contracts at September 30, 2017 were as follows:
Credit Ratings
Maximum Potential
Collateral
Requirements
 (in millions)
At BBB- and/or Baa3$167
Below BBB- and/or Baa3$579
Included in these amounts are certain agreements that could require collateral in the event that Alabama Power or Georgia Power has a credit rating change to below investment grade. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of Gulf Power to access capital markets and would be likely to impact the cost at which it does so.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including Gulf Power) from stable to negative.

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Market Price Risk
Gulf Power's market risk exposure relative to interest rate changes for the third quarter and year-to-date 2017 has not changed materially compared to the December 31, 2016 reporting period. Gulf Power's exposure to market volatility in commodity fuel prices and prices of electricity with respect to its wholesale generating capacity is limited because its long-term sales agreement shifts substantially all fuel cost responsibility to the purchaser.
In connection with the 2017 Rate Case Settlement Agreement, Gulf Power recorded a $32.5 million write-down of Gulf Power's ownership of Plant Scherer Unit 3 in the first quarter 2017 to resolve the inclusion of Gulf Power's investment in Plant Scherer Unit 3 in retail rates and no adjustment to the environmental cost recovery clause rate approved by the Florida PSC in November 2016 was made. The 2017 Rate Case Settlement Agreement provides that 100% of Gulf Power's ownership of Plant Scherer Unit 3 will be included in retail rates. This resolved the market price risk concern around Gulf Power's uncontracted wholesale generating capacity related to Plant Scherer Unit 3. See FUTURE EARNINGS POTENTIAL – "Retail Regulatory Matters" herein for additional information.
The Florida PSC extended the moratorium on Gulf Power's fuel-hedging program until January 1, 2021 in connection with the 2017 Rate Case Settlement Agreement. The moratorium does not have an impact on the recovery of existing hedges entered into under the previously-approved hedging program.
For additional discussion of Gulf Power's market risks, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Market Price Risk" of Gulf Power in Item 7 of the Form 10-K.
Financing Activities
In January 2017, Gulf Power issued 1,750,000 shares of common stock to Southern Company and realized proceeds of $175 million. The proceeds were used for general corporate purposes, including Gulf Power's continuous construction program.
In March 2017, Gulf Power extended the maturity of a $100 million short-term floating rate bank loan bearing interest based on one-month LIBOR from April 2017 to October 2017 and subsequently repaid the loan in May 2017.
In May 2017, Gulf Power issued $300 million aggregate principal amount of Series 2017A 3.30% Senior Notes due May 30, 2027. The proceeds, together with other funds, were used to repay at maturity $85 million aggregate principal amount of Series 2007A 5.90% Senior Notes due June 15, 2017; to repay outstanding commercial paper borrowings; to repay a $100 million short-term floating rate bank loan, as discussed above; and to redeem, in June 2017, 550,000 shares ($55 million aggregate liquidation amount) of 6.00% Series Preference Stock, 450,000 shares ($45 million aggregate liquidation amount) of Series 2007A 6.45% Preference Stock, and 500,000 shares ($50 million aggregate liquidation amount) of Series 2013A 5.60% Preference Stock.
In addition to any financings that may be necessary to meet capital requirements, contractual obligations, and storm recovery, Gulf Power plans to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.

MISSISSIPPI POWER COMPANY

MISSISSIPPI POWER COMPANY
CONDENSED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Operating Revenues:       
Retail revenues$243
 $263
 $665
 $652
Wholesale revenues, non-affiliates72
 78
 196
 198
Wholesale revenues, affiliates21
 7
 40
 23
Other revenues5
 4
 14
 12
Total operating revenues341
 352
 915
 885
Operating Expenses:       
Fuel120
 112
 301
 268
Purchased power, non-affiliates4
 3
 7
 4
Purchased power, affiliates2
 5
 13
 14
Other operations and maintenance66
 74
 206
 211
Depreciation and amortization39
 30
 120
 114
Taxes other than income taxes25
 31
 77
 81
Estimated loss on Kemper IGCC34
 88
 3,155
 222
Total operating expenses290
 343
 3,879
 914
Operating Income (Loss)51
 9
 (2,964) (29)
Other Income and (Expense):       
Allowance for equity funds used during construction1
 31
 72
 90
Interest expense, net of amounts capitalized13
 (15) (23) (46)
Other income (expense), net(1) (1) (3) (4)
Total other income and (expense)13
 15
 46
 40
Earnings (Loss) Before Income Taxes64
 24
 (2,918) 11
Income taxes (benefit)24
 (2) (885) (29)
Net Income (Loss)40
 26
 (2,033) 40
Dividends on Preferred Stock
 
 1
 1
Net Income (Loss) After Dividends on Preferred Stock$40
 $26
 $(2,034) $39
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Net Income (Loss)$40
 $26
 $(2,033) $40
Other comprehensive income (loss)
 
 
 
Qualifying hedges:       
Changes in fair value, net of tax of $-, $-, $-, and $-, respectively(1) 
 
 (1)
Reclassification adjustment for amounts included in net
income, net of tax of $-, $-, $-, and $-, respectively

 
 1
 1
Total other comprehensive income (loss)(1) 
 1
 
Comprehensive Income (Loss)$39
 $26
 $(2,032) $40
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

MISSISSIPPI POWER COMPANY
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Nine Months Ended September 30,
 2017 2016
 (in millions)
Operating Activities:   
Net income (loss)$(2,033) $40
Adjustments to reconcile net income (loss) to net cash provided from operating activities —   
Depreciation and amortization, total144
 115
Deferred income taxes(1,159) 34
Allowance for equity funds used during construction(72) (90)
Estimated loss on Kemper IGCC3,148
 222
Other, net(26) (1)
Changes in certain current assets and liabilities —   
-Receivables438
 3
-Fossil fuel stock21
 8
-Other current assets(9) 34
-Accounts payable(21) 5
-Accrued taxes20
 96
-Accrued compensation(12) (5)
-Over recovered regulatory clause revenues(47) (20)
-Customer liability associated with Kemper refunds
 (73)
-Other current liabilities(31) 5
Net cash provided from operating activities361
 373
Investing Activities:   
Property additions(411) (592)
Construction payables(47) (25)
Government grant proceeds
 137
Other investing activities(25) (29)
Net cash used for investing activities(483) (509)
Financing Activities:   
Decrease in notes payable, net(23) 
Proceeds —   
Capital contributions from parent company1,002
 227
Long-term debt to parent company40
 200
Other long-term debt
 900
Short-term borrowings113
 
Redemptions —   
Short-term borrowings(109) (475)
Long-term debt to parent company(591) (225)
Other long-term debt(300) (425)
Other financing activities(3) (5)
Net cash provided from financing activities129
 197
Net Change in Cash and Cash Equivalents7
 61
Cash and Cash Equivalents at Beginning of Period224
 98
Cash and Cash Equivalents at End of Period$231
 $159
Supplemental Cash Flow Information:   
Cash paid (received) during the period for —   
Interest (paid $73 and $72, net of $28 and $36 capitalized for 2017
and 2016, respectively)
$45
 $36
Income taxes, net(209) (231)
Noncash transactions — Accrued property additions at end of period32
 80
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

MISSISSIPPI POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Assets At September 30, 2017 At December 31, 2016
  (in millions)
Current Assets:    
Cash and cash equivalents $231
 $224
Receivables —    
Customer accounts receivable 38
 29
Unbilled revenues 41
 42
Income taxes receivable, current 102
 544
Other accounts and notes receivable 15
 14
Affiliated 15
 15
Fossil fuel stock 20
 100
Materials and supplies 45
 76
Other regulatory assets, current 113
 115
Other current assets 8
 8
Total current assets 628
 1,167
Property, Plant, and Equipment:    
In service 4,836
 4,865
Less: Accumulated provision for depreciation 1,312
 1,289
Plant in service, net of depreciation 3,524
 3,576
Construction work in progress 75
 2,545
Total property, plant, and equipment 3,599
 6,121
Other Property and Investments 28
 12
Deferred Charges and Other Assets:    
Deferred charges related to income taxes 62
 361
Other regulatory assets, deferred 436
 518
Accumulated deferred income taxes 279
 
Other deferred charges and assets 23
 56
Total deferred charges and other assets 800
 935
Total Assets $5,055
 $8,235
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.


MISSISSIPPI POWER COMPANY
CONDENSED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholder's Equity At September 30, 2017 At December 31, 2016
  (in millions)
Current Liabilities:    
Securities due within one year —    
Parent $
 $551
Other 1,028
 78
Notes payable 4
 23
Accounts payable —    
Affiliated 56
 62
Other 82
 135
Customer deposits 16
 16
Accrued taxes 78
 99
Unrecognized tax benefits 2
 383
Accrued interest 16
 46
Accrued compensation 29
 42
Asset retirement obligations, current 15
 32
Over recovered fuel clause liabilities 4
 51
Other current liabilities 67
 20
Total current liabilities 1,397
 1,538
Long-term Debt 1,167
 2,424
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 
 756
Employee benefit obligations 109
 115
Asset retirement obligations, deferred 150
 146
Other cost of removal obligations 175
 170
Other regulatory liabilities, deferred 87
 84
Other deferred credits and liabilities 23
 26
Total deferred credits and other liabilities 544
 1,297
Total Liabilities 3,108
 5,259
Redeemable Preferred Stock 33
 33
Common Stockholder's Equity:    
Common stock, without par value —    
Authorized — 1,130,000 shares    
Outstanding — 1,121,000 shares 38
 38
Paid-in capital 4,529
 3,525
Accumulated deficit (2,650) (616)
Accumulated other comprehensive loss (3) (4)
Total common stockholder's equity 1,914
 2,943
Total Liabilities and Stockholder's Equity $5,055
 $8,235
The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

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THIRD QUARTER 2017 vs. THIRD QUARTER 2016
AND
YEAR-TO-DATE 2017 vs. YEAR-TO-DATE 2016


OVERVIEW
Mississippi Power operates as a vertically integrated utility providing electric service to retail customers within its traditional service territory located within the State of Mississippi and to wholesale customers in the Southeast.
Many factors affect the opportunities, challenges, and risks of Mississippi Power's business of providing electric service. These factors include Mississippi Power's ability to maintain and grow energy sales and to operate in a constructive regulatory environment that provides timely recovery of prudently-incurred costs. These costs include those related to the Kemper County energy facility, projected long-term demand growth, reliability, fuel, and stringent environmental standards, as well as ongoing capital expenditures required for maintenance and restoration following major storms. Appropriately balancing required costs and capital expenditures with customer prices will continue to challenge Mississippi Power for the foreseeable future.
The Kemper IGCC was approved by the Mississippi PSC in the 2010 CPCN proceedings, subject to a construction cost cap of $2.88 billion, net of $245 million of grants awarded to the project by the DOE under the Clean Coal Power Initiative Round 2 (Initial DOE Grants) and excluding the cost of the lignite mine and equipment, the cost of the CO2 pipeline facilities, AFUDC, and certain general exceptions, including change of law, force majeure, and beneficial capital (construction cost increase demonstrated to produce efficiencies that result in a neutral or favorable effect on customers relative to the original proposal for the CPCN) (Cost Cap Exceptions). The combined cycle and associated common facilities portion of the Kemper IGCC were placed in service in August 2014.
In December 2015, the Mississippi PSC issued an order (In-Service Asset Rate Order), based on a stipulation (2015 Stipulation) between Mississippi Power and the Mississippi Public Utilities Staff (MPUS), authorizing rates that provide for the recovery of approximately $126 million annually related to the combined cycle and associated common facilities portion of Kemper IGCC assets previously placed in service. As required by the In-Service Asset Rate Order, on June 5, 2017, Mississippi Power made a rate filing requesting to adjust the amortization schedules of the regulatory assets reviewed and determined prudent in a manner that would not change customer rates or annual revenues. On June 28, 2017, the Mississippi PSC suspended this filing. On July 6, 2017, the Mississippi PSC issued an order requiring Mississippi Power to establish a regulatory liability account to maintain current rates related to the Kemper IGCC following the July 2017 completion of the amortization period for certain regulatory assets approved in the In-Service Asset Rate Order that would allow for subsequent refund if the Mississippi PSC deems the rates unjust and unreasonable. At September 30, 2017, the related regulatory liability totaled $7 million.
The initial production of syngas began on July 14, 2016 for gasifier "B" and on September 13, 2016 for gasifier "A." Mississippi Power achieved integrated operation of both gasifiers on January 29, 2017, including the production of electricity from syngas in both combustion turbines. During testing, the plant produced and captured CO2, and produced sulfuric acid and ammonia, each of acceptable quality under the related off-take agreements. However, Mississippi Power experienced numerous challenges during the extended start-up process to achieve integrated operation of the gasifiers on a sustained basis. In May 2017, after achieving these milestones, Mississippi Power determined that a critical system component, the syngas coolers, would need replacement sooner than originally planned, which would require significant lead time and significant cost. In addition, the long-term natural gas price forecast has decreased significantly and the estimated cost of operating and maintaining the facility during the first five full years of operations has increased significantly since certification.
On June 21, 2017, the Mississippi PSC stated its intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC plant, and address all issues associated with the Kemper IGCC (Kemper Settlement Order). The Kemper Settlement Order established a new docket for the purposes of pursuing a global

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settlement of costs of the Kemper IGCC (Kemper IGCC Settlement Docket). The Mississippi PSC requested any such proposed settlement agreement reflect: (i) at a minimum, no rate increase to Mississippi Power customers (with a rate reduction focused on residential customers encouraged); (ii) removal of all cost risk to customers associated with the Kemper IGCC gasifier and related assets; and (iii) modification or amendment of the CPCN for the Kemper IGCC to allow only for ownership and operation of a natural gas facility.
On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a process to suspend operations and start-up activities on the gasifier portion of the Kemper IGCC, given the uncertainty as to the future of the gasifier portion of the Kemper IGCC. Mississippi Power expects to continue to operate the combined cycle portion of the Kemper IGCC as it has done since August 2014. At the time of project suspension, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subject to the construction cost cap, and was net of the $137 million in additional grants from the DOE received on April 8, 2016 (Additional DOE Grants).
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs associated with the gasification portions of the plant and lignite mine. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.
Total pre-tax charges to income for the estimated probable losses on the Kemper IGCC were $34 million ($21 million after tax) for the third quarter 2017 and $3.2 billion ($2.2 billion after tax) for the nine months ended September 30, 2017. In the aggregate, since the Kemper IGCC project started, Mississippi Power has incurred charges of $6.0 billion ($4.0 billion after tax) through September 30, 2017.
Mississippi Power reached and filed a settlement agreement on August 21, 2017 with certain parties (not including the MPUS), which it believes met the conditions of the Kemper Settlement Order. The settlement agreement provides for an annual revenue requirement of $126 million for Kemper IGCC-related costs, which would (i) be effective January 1, 2018, (ii) represent no rate increase for customers, and (iii) include no recovery for the costs associated with the gasifier portion of the Kemper IGCC in 2018 or at any future date. In addition, under the settlement agreement, the CPCN for the Kemper IGCC would be modified to limit the Kemper County energy facility to natural gas combined cycle operation and Mississippi Power would, in the future, file a reserve margin plan with the Mississippi PSC. The Mississippi PSC issued a scheduling order, as amended on October 5, 2017, noting Mississippi Power and the MPUS had failed to reach a joint stipulation and ordering a full hearing. The Mississippi PSC is expected to rule on an order resolving this matter in January 2018.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which $0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimate for the combined cycle portion of the facility, as well as the 15% that was previously contracted to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistent with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.

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For additional information on the Kemper IGCC, including information on the project economic viability analysis, pending lawsuits, and an ongoing SEC investigation, see Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" and "Other Matters" and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein.
In June 2017, Southern Company made equity contributions totaling $1.0 billion to Mississippi Power. Mississippi Power used a portion of the proceeds to (i) prepay $300 million of the outstanding principal amount under its $1.2 billion unsecured term loan; (ii) repay $591 million of the outstanding principal amount of promissory notes to Southern Company; and (iii) repay $10 million of the outstanding principal amount of bank loans.
Mississippi Power's financial statement presentation contemplates continuation of Mississippi Power as a going concern as a result of Southern Company's anticipated ongoing financial support of Mississippi Power. For additional information, see Notes 1 and 6 to the financial statements of Mississippi Power under "Recently Issued Accounting Standards" and "Going Concern," respectively, in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Going Concern" herein.
In addition to the rate recovery of the Kemper County energy facility, Mississippi Power continues to focus on several key performance indicators. In recognition that Mississippi Power's long-term financial success is dependent upon how well it satisfies its customers' needs, Mississippi Power's retail base rate mechanism, PEP, includes performance indicators that directly tie customer service indicators to Mississippi Power's allowed ROE. Mississippi Power also focuses on broader measures of customer satisfaction, plant availability, system reliability, and net income after dividends on preferred stock.
RESULTS OF OPERATIONS
Net Income (Loss)
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$14 53.8 $(2,073) N/M
N/M - Not meaningful
Mississippi Power's net income after dividends on preferred stock for the third quarter 2017 was $40 million compared to $26 million for the corresponding period in 2016. The increase was due to lower pre-tax charges associated with the Kemper IGCC and a decrease in interest expense, net of amounts capitalized, partially offset by an increase in income taxes and decreases in retail revenues and AFUDC equity.
Mississippi Power's net loss after dividends on preferred stock for year-to-date 2017 was $2.03 billion compared to net income of $39 million for the corresponding period in 2016. The decrease in net income was related to higher pre-tax charges associated with the Kemper IGCC.
See Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.

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Retail Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(20) (7.6) $13 2.0
In the third quarter 2017, retail revenues were $243 million compared to $263 million for the corresponding period in 2016. For year-to-date 2017, retail revenues were $665 million compared to $652 million for the corresponding period in 2016.
Details of the changes in retail revenues were as follows:
 Third Quarter 2017 Year-to-Date 2017
 (in millions) (% change) (in millions) (% change)
Retail – prior year$263
   $652
  
Estimated change resulting from –       
Rates and pricing(10) (3.8) 9
 1.4
Sales growth1
 0.4
 4
 0.6
Weather(9) (3.4) (16) (2.5)
Fuel and other cost recovery(2) (0.8) 16
 2.5
Retail – current year$243
 (7.6)% $665
 2.0 %
Revenues associated with changes in rates and pricing decreased in the third quarter 2017 when compared to the corresponding period in 2016 primarily due to recognition of a regulatory liability as directed by the Mississippi PSC in a July 6, 2017 order following full amortization of certain regulatory assets and an ECO Plan rate decrease implemented in the second quarter 2017.
Revenues associated with changes in rates and pricing increased in year-to-date 2017 when compared to the corresponding period in 2016 primarily due to an ECO Plan rate increase implemented in the third quarter 2016, partially offset by the recognition of a regulatory liability as directed by the Mississippi PSC in a July 6, 2017 order following full amortization of certain regulatory assets and an ECO Plan rate decrease implemented in the second quarter 2017.
See Note (B) to the Condensed Financial Statements under "Regulatory Matters – Mississippi Power – Environmental Compliance Overview Plan" and "Integrated Coal Gasification Combined Cycle" herein for additional information.
Revenues attributable to changes in sales increased slightly for the third quarter 2017 when compared to the corresponding period in 2016. Weather-adjusted KWH sales to residential customers increased 2.9% due to higher customer usage. Weather-adjusted KWH sales to commercial customers decreased 1.2% due to lower customer usage, partially offset by customer growth. KWH sales to industrial customers decreased 2.4% primarily due to an unplanned outage by a large customer in 2017, the impacts of Hurricane Harvey on petroleum pipeline customers, and a decrease in the number of mid-size customers.
Revenues attributable to changes in sales increased slightly for year-to-date 2017 when compared to the corresponding period in 2016. Weather-adjusted KWH sales to residential customers increased 0.8% due to higher customer usage. Weather-adjusted KWH sales to commercial customers decreased 0.7% due to lower customer usage, partially offset by customer growth. KWH sales to industrial customers decreased 1.1% primarily due to unplanned outages by a large customer in 2017, the impacts of Hurricane Harvey on petroleum pipeline customers, and a decrease in the number of mid-size customers.
Fuel and other cost recovery revenues decreased in the third quarter 2017 when compared to the corresponding period in 2016 primarily as a result of lower recoverable fuel costs. Fuel and other cost recovery revenues increased

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for year-to-date 2017 when compared to the corresponding period in 2016 primarily as a result of higher recoverable fuel costs. See "Fuel and Purchased Power Expenses" herein for additional information. Recoverable fuel costs include fuel and purchased power expenses reduced by the fuel portion of wholesale revenues from energy sold to customers outside Mississippi Power's service territory. Electric rates include provisions to adjust billings for fluctuations in fuel costs, including the energy component of purchased power costs. Under these provisions, fuel revenues generally equal fuel expenses, including the energy component of purchased power costs, and do not affect net income.
Wholesale Revenues – Affiliates
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$14 N/M $17 73.9
N/M - Not meaningful
Wholesale revenues from sales to affiliated companies will vary depending on demand and the availability and cost of generating resources at each company. These affiliate sales are made in accordance with the IIC, as approved by the FERC. These transactions do not have a significant impact on earnings since this energy is generally sold at marginal cost.
In the third quarter 2017, wholesale revenues from sales to affiliates were $21 million compared to $7 million for the corresponding period in 2016. The increase was due to a $13 million increase in KWH sales as a result of supporting Southern Company system transmission reliability and a $1 million increase primarily due to higher natural gas prices.
For year-to-date 2017, wholesale revenues from sales to affiliates were $40 million compared to $23 million for the corresponding period in 2016. The increase was primarily due to higher KWH sales as a result of supporting Southern Company system transmission reliability and higher natural gas prices.
Fuel and Purchased Power Expenses
 Third Quarter 2017
vs.
Third Quarter 2016
 Year-to-Date 2017
vs.
Year-to-Date 2016
 (change in millions) (% change) (change in millions) (% change)
Fuel$8
 7.1 $33
 12.3
Purchased power – non-affiliates1
 33.3 3
 75.0
Purchased power – affiliates(3) (60.0) (1) (7.1)
Total fuel and purchased power expenses$6
   $35
  
In the third quarter 2017, total fuel and purchased power expenses were $126 million compared to $120 million for the corresponding period in 2016. The increase was due to a $6 million increase in the volume of KWHs generated and purchased.
For year-to-date 2017, total fuel and purchased power expenses were $321 million compared to $286 million for the corresponding period in 2016. The increase was primarily due to a $42 million increase in the average cost of natural gas and purchased power, partially offset by a $4 million decrease in coal prices and a $3 million decrease in the volume of KWHs generated and purchased.
Fuel and purchased power energy transactions do not have a significant impact on earnings since energy expenses are generally offset by energy revenues through Mississippi Power's fuel cost recovery clause.

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Details of Mississippi Power's generation and purchased power were as follows:
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 Year-to-Date 2016
Total generation (in millions of KWHs)
4,453 4,255 11,542 11,570
Total purchased power (in millions of KWHs)(*)
164 288 527 877
Sources of generation (percent) –
       
Coal8 10 8 9
Gas92 90 92 91
Cost of fuel, generated (in cents per net KWH) 
       
Coal3.80 4.02 3.60 4.09
Gas2.77 2.64 2.72 2.34
Average cost of fuel, generated (in cents per net KWH)
2.86 2.79 2.80 2.50
Average cost of purchased power (in cents per net KWH)(*)
3.74 2.59 3.78 2.04
(*)Includes energy produced during the test period for the Kemper IGCC, which is accounted for in accordance with FERC guidance.
Fuel
In the third quarter 2017, total fuel expense was $120 million compared to $112 million for the corresponding period in 2016. The increase was due to a 2.5% increase in the average cost of fuel per KWH generated, primarily due to a 4.5% higher cost of natural gas, and a 5.4% increase in the volume of KWHs generated.
For year-to-date 2017, total fuel expense was $301 million compared to $268 million for the corresponding period in 2016. The increase was due to a 12.0% increase in the average cost of fuel per KWH generated primarily due to a 16.2% higher cost of natural gas.
Purchased Power
Energy purchases will vary depending on the market prices of wholesale energy as compared to the cost of the Southern Company system's generation, demand for energy within the Southern Company system's service territory, and the availability of the Southern Company system's generation. Energy purchases from affiliates are made in accordance with the IIC, as approved by the FERC.
Other Operations and Maintenance Expenses
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(8) (10.8) $(5) (2.4)
In the third quarter 2017, other operations and maintenance expenses were $66 million compared to $74 million for the corresponding period in 2016. The decrease was primarily due to a $5 million decrease in transmission and distribution expenses related to overhead line maintenance and a $4 million decrease related to decreases in employee compensation and benefits and corporate advertising.
For year-to-date 2017, other operations and maintenance expenses were $206 million compared to $211 million for the corresponding period in 2016. The decrease was primarily due to a $6 million decrease in transmission and distribution expenses related to overhead line maintenance and a $5 million decrease related to decreases in employee compensation and benefits and corporate advertising, partially offset by a $5 million increase associated with the Kemper IGCC in-service assets.

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See FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined CycleRate Recovery of Kemper IGCC Costs2015 Rate Case" herein for additional information.
Depreciation and Amortization
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$9 30.0 $6 5.3
In the third quarter 2017, depreciation and amortization was $39 million compared to $30 million for the corresponding period in 2016. The increase was primarily related to $6 million in amortization and deferrals associated with regulatory assets and liabilities and $3 million in depreciation related to additional plant in service.
For year-to-date 2017, depreciation and amortization was $120 million compared to $114 million for the corresponding period in 2016. The increase was primarily related to $5 million in depreciation related to additional plant in service.
See Note 1 to the financial statements of Mississippi Power under "Depreciation, Depletion, and Amortization" in Item 8 of the Form 10-K.
Taxes Other Than Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(6) (19.4) $(4) (4.9)
In the third quarter 2017, taxes other than income taxes were $25 million compared to $31 million for the corresponding period in 2016. For year-to-date 2017, taxes other than income taxes were $77 million compared to $81 million for the corresponding period in 2016. These decreases were primarily due to a decrease in franchise taxes of $5 million and $4 million for the third quarter and year-to-date 2017, respectively, as well as a decrease in payroll taxes of $1 million for the third quarter 2017.
Estimated Loss on Kemper IGCC
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(54) (61.4) $2,933 N/M
N/M - Not meaningful
Estimated probable losses on the Kemper IGCC of $34 million and $3.2 billion were recorded in the third quarter and year-to-date 2017, respectively, compared to $88 million and $222 million in the third quarter and year-to-date 2016, respectively. While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable. As a result, Mississippi Power suspended the project on June 28, 2017, and recorded $34 million and $2.9 billion of additional charges to income in the third quarter and year-to-date 2017, respectively, for the estimated costs associated with the gasification portions of the plant and lignite mine.
Prior to the project's suspension, Mississippi Power recorded losses for revisions of estimated costs expected to be incurred on construction of the Kemper IGCC in excess of the $2.88 billion cost cap established by the Mississippi PSC, net of the Initial DOE Grants and excluding the Cost Cap Exceptions.

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See Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Allowance for Equity Funds Used During Construction
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(30) (96.8) $(18) (20.0)
In the third quarter 2017, AFUDC equity was $1 million compared to $31 million for the corresponding period in 2016. For year-to-date 2017, AFUDC equity was $72 million compared to $90 million for the corresponding period in 2016. The decreases resulted from the Kemper IGCC project suspension in June 2017.
See Note 3 to the financial statements of Mississippi Power under "FERC Matters" and "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" and Note (B) to the Condensed Financial Statements under "FERC Matters" and "Integrated Coal Gasification Combined Cycle" herein for additional information regarding the Kemper IGCC.
Interest Expense, Net of Amounts Capitalized
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(28) N/M $(23) 50.0
N/M - Not meaningful
In the third quarter 2017, interest expense, net of amounts capitalized was $(13) million compared to $15 million for the corresponding period in 2016. The decrease was primarily associated with a $33 million net reduction in interest following a settlement with the IRS related to research and experimental (R&E) deductions. Also contributing to the decrease was a $4 million decrease in interest related to long-term debt. These decreases were partially offset by an $11 million reduction in interest capitalized following suspension of the Kemper IGCC construction.
For year-to-date 2017, interest expense, net of amounts capitalized was $23 million compared to $46 million for the corresponding period in 2016. The decrease was primarily associated with a $33 million net reduction in interest following a settlement with the IRS related to R&E deductions. Also contributing to the decrease was a $2 million decrease in interest related to short-term debt and a $1 million decrease in interest related to long-term debt. These decreases were partially offset by an $8 million reduction in interest capitalized following suspension of the Kemper IGCC construction and the amortization of $7 million in interest deferrals in accordance with the In-Service Asset Rate Order.
See Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Income Taxes (Benefit)
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$26 N/M $(856) N/M
N/M - Not meaningful
In the third quarter 2017, income taxes were $24 million compared to an income tax benefit of $2 million for the corresponding period in 2016. For year-to-date 2017, income tax benefit was $885 million compared to $29 million

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for the corresponding period in 2016. The changes were primarily due to the estimated probable losses on the Kemper IGCC, net of the non-deductible AFUDC equity portion and the related state valuation allowances.
See Note (G) to the Condensed Financial Statements herein for additional information.
FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Mississippi Power's future earnings potential. The level of Mississippi Power's future earnings depends on numerous factors that affect the opportunities, challenges, and risks of Mississippi Power's business of providing electric service. These factors include Mississippi Power's ability to recover its prudently-incurred costs, including those related to the remainder of the Kemper County energy facility not included in current rates, in a timely manner during a time of increasing costs and its ability to prevail against legal challenges associated with the Kemper County energy facility. Future earnings will be driven primarily by customer growth. Earnings will also depend upon maintaining and growing sales, considering, among other things, the adoption and/or penetration rates of increasingly energy-efficient technologies and increasing volumes of electronic commerce transactions. Earnings are subject to a variety of other factors. These factors include weather, competition, developing new and maintaining existing energy contracts and associated load requirements with other utilities and other wholesale customers, energy conservation practiced by customers, the use of alternative energy sources by customers, the price of electricity, the price elasticity of demand, and the rate of economic growth or decline in Mississippi Power's service territory. Demand for electricity is primarily driven by the pace of economic growth that may be affected by changes in regional and global economic conditions, which may impact future earnings.
On October 4, 2017, Mississippi Power executed agreements with its largest retail customer, Chevron Products Company (Chevron), to continue providing retail service to the Chevron refinery in Pascagoula, Mississippi through 2038, subject to the approval of the Mississippi PSC. The new agreements are not expected to have a material impact on Mississippi Power's earnings; however, the co-generation assets located at the refinery are expected to be accounted for as a sales-type lease in accordance with the new lease accounting rules that become effective in 2019. These assets are also subject to a security interest granted to Chevron. See FINANCIAL CONDITION AND LIQUIDITY – "Credit Rating Risk" herein for additional information. The ultimate outcome of this matter cannot be determined at this time.
Current proposals related to potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals is dependent on the final form of any legislation enacted and the related transition rules and cannot be determined at this time, but could have a material impact on Mississippi Power's financial statements.
For additional information relating to these issues, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL of Mississippi Power in Item 7 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Environmental Matters
Compliance costs related to federal and state environmental statutes and regulations could affect earnings if such costs cannot continue to be fully recovered in rates on a timely basis or through long-term wholesale agreements. Environmental compliance spending over the next several years may differ materially from the amounts estimated. The timing, specific requirements, and estimated costs could change as environmental statutes and regulations are adopted or modified, as compliance plans are revised or updated, and as legal challenges to rules are completed. Further, higher costs that are recovered through regulated rates could contribute to reduced demand for electricity, which could negatively affect results of operations, cash flows, and financial condition. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Environmental Matters" of Mississippi

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Power in Item 7 and Note 3 to the financial statements of Mississippi Power under "Environmental Matters" in Item 8 of the Form 10-K for additional information.
Environmental Statutes and Regulations
Water Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Water Quality" of Mississippi Power in Item 7 of the Form 10-K for additional information regarding the final effluent guidelines rule and the final rule revising the regulatory definition of waters of the U.S. for all Clean Water Act (CWA) programs.
On April 25, 2017, the EPA published a notice announcing it would reconsider the effluent guidelines rule, which had been finalized in November 2015. On September 18, 2017, the EPA published a final rule establishing a stay of the compliance deadlines for certain effluent limitations and pretreatment standards under the rule.
On June 27, 2017, the EPA and the U.S. Army Corps of Engineers proposed to rescind the final rule that revised the regulatory definition of waters of the U.S. for all CWA programs. The final rule has been stayed since October 2015 by the U.S. Court of Appeals for the Sixth Circuit.
The ultimate outcome of these matters cannot be determined at this time.
Global Climate Issues
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Global Climate Issues" of Mississippi Power in Item 7 of the Form 10-K for additional information.
On March 28, 2017, the U.S. President signed an executive order directing agencies to review actions that potentially burden the development or use of domestically produced energy resources. The executive order specifically directs the EPA to review the Clean Power Plan and final greenhouse gas emission standards for new, modified, and reconstructed electric generating units and, if appropriate, take action to suspend, revise, or rescind those rules. On October 16, 2017, the EPA published a proposed rule to repeal the Clean Power Plan. The EPA has not determined whether or when it will promulgate a replacement rule.
On June 1, 2017, the U.S. President announced that the United States will withdraw from the non-binding Paris Agreement and begin renegotiation of its terms.
The ultimate outcome of these matters cannot be determined at this time.
FERC Matters
Municipal and Rural Associations Tariff
See Note 3 to the financial statements of Mississippi Power under "FERC Matters" in Item 8 of the Form 10-K for additional information regarding a settlement agreement entered into by Mississippi Power regarding the establishment of a regulatory asset for Kemper IGCC-related costs. See Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for information regarding the Kemper IGCC.
In March 2016, Mississippi Power reached a settlement agreement with its wholesale customers, which was subsequently approved by the FERC, for an increase in wholesale base revenues under the MRA cost-based electric tariff, primarily as a result of placing scrubbers for Plant Daniel Units 1 and 2 in service in 2015. The settlement agreement became effective for services rendered beginning May 1, 2016, resulting in an estimated annual revenue increase of $7 million under the MRA cost-based electric tariff. Additionally, under the settlement agreement, the tariff customers agreed to similar regulatory treatment for MRA tariff ratemaking as the treatment approved for retail ratemaking under the In-Service Asset Rate Order. This regulatory treatment primarily includes (i) recovery of the Kemper IGCC assets currently operational and providing service to customers and other related costs, (ii)

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amortization of the Kemper IGCC-related regulatory assets included in rates under the settlement agreement over the 36 months ending April 30, 2019, (iii) Kemper IGCC-related expenses included in rates under the settlement agreement no longer being deferred and charged to expense, and (iv) removing all of the Kemper IGCC CWIP from rate base with a corresponding increase in accrual of AFUDC. The additional resulting AFUDC totaled approximately $22 million through the suspension of Kemper IGCC start-up activities.
See Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein for additional information.
Fuel Cost Recovery
Mississippi Power has a wholesale MRA and a Market Based (MB) fuel cost recovery factor. At September 30, 2017, the amount of over-recovered wholesale MRA fuel costs included in the balance sheets was $3 million compared to $13 million at December 31, 2016. Over-recovered wholesale MB fuel costs included in the balance sheets were immaterial at September 30, 2017 and December 31, 2016.
See Note 3 to the financial statements of Mississippi Power under "FERC Matters – Fuel Cost Recovery" in Item 8 of the Form 10-K for additional information.
Market-Based Rate Authority
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters Market-Based Rate Authority" of Mississippi Power in Item 7 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' (including Mississippi Power's) and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies (including Mississippi Power) and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' (including Mississippi Power's) and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' (including Mississippi Power's) and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies (including Mississippi Power) and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017 order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies (including Mississippi Power) and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Cooperative Energy Shared Service Agreement and PPA
Mississippi Power provides electricity to a municipality and various rural electric cooperative associations located in southeastern Mississippi, including Cooperative Energy. These generation services are provided under long-term contracts subject to a cost-based, FERC regulated MRA electric tariff and a long-term market-based wholesale contract.
On September 18, 2017, Mississippi Power and Cooperative Energy executed a Shared Service Agreement (SSA), as part of the MRA tariff, under which Mississippi Power and Cooperative Energy will share in providing electricity to all Cooperative Energy delivery points, in lieu of the current arrangement under which each delivery point is specifically assigned to either entity. The SSA becomes effective on January 1, 2018, subject to the FERC's acceptance, and may be cancelled by Cooperative Energy with 10 years notice after December 31, 2021.

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The SSA provides Cooperative Energy the option to decrease its use of Mississippi Power's generation services under the MRA tariff, subject to annual and cumulative caps and a one-year notice requirement. In the event Cooperative Energy elects to reduce these services, the related reduction in Mississippi Power's revenues is not expected to be significant through 2020.
In 2008, Mississippi Power entered into a 10-year Power Supply Agreement (PSA) with Cooperative Energy for approximately 152 MWs, which became effective in 2011. Following certain plant retirements, the current PSA capacity is 86 MWs. On September 28, 2017, Mississippi Power and Cooperative Energy executed an amendment to the PSA effective October 1, 2017, increasing the capacity to 286 MWs under the PSA.
Cooperative Energy also has a 10-year Network Integration Transmission Service Agreement (NITSA) with SCS for transmission service to certain delivery points on the Mississippi Power transmission system that became effective in 2011. As a result of the PSA amendments, Cooperative Energy and SCS are amending the terms of the NITSA to provide for the purchase of incremental transmission capacity for service beginning April 1, 2018. This NITSA amendment remains subject to execution and acceptance by the FERC.
The ultimate outcome of these matters cannot be determined at this time.
Retail Regulatory Matters
Mississippi Power's rates and charges for service to retail customers are subject to the regulatory oversight of the Mississippi PSC. Mississippi Power's rates are a combination of base rates and several separate cost recovery clauses for specific categories of costs. These separate cost recovery clauses address such items as fuel and purchased power, energy efficiency programs, ad valorem taxes, property damage, and the costs of compliance with environmental laws and regulations. Costs not addressed through one of the specific cost recovery clauses are expected to be recovered through Mississippi Power's base rates. See Note 3 to the financial statements of Mississippi Power under "Retail Regulatory Matters" and "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Regulatory MattersMississippi Power" and "Integrated Coal Gasification Combined Cycle" herein for additional information.
Renewables
Mississippi Power placed in service three solar projects in January, June, and October 2017. Mississippi Power may retire the renewable energy credits (REC) generated on behalf of its customers or sell the RECs, separately or bundled with energy, to third parties.
On August 17, 2017, the Mississippi PSC approved Mississippi Power's CPCN for the construction, operation, and maintenance of a 52.5-MW solar energy generating facility, which is expected to be placed in service by January 2020. The ultimate outcome of this matter cannot be determined at this time.
Performance Evaluation Plan
On March 15, 2017,2023, Mississippi Power submitted its annual PEP lookback filing for 2016, which reflected the need for a $5 million surcharge to be recovered from customers. The filing has been suspended for review by the Mississippi PSC.
On November 15, 2017, Mississippi Power is expected to make its annualretail PEP filing for 2018. Retail rate adjustments under PEP are limited2023 to 4% of annual retail revenue and are subject to Mississippi PSC approval.
The ultimate outcome of these matters cannot be determined at this time.
Energy Efficiency
On July 6, 2017, the Mississippi PSC issued an order approving Mississippi Power's Energy Efficiency Cost Rider compliance filing, which increased annualindicating no change in retail revenues by approximately $2 million effective with the first billing cycle for August 2017.

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Environmental Compliance Overview Plan
On May 4, 2017, the Mississippi PSC approved Mississippi Power's ECO Plan filing for 2017, which requested the maximum 2% annual increase in revenues, approximately $18 million, primarily related to the Plant Daniel Units 1 and 2 scrubbers placed in service in 2015. The rates became effective with the first billing cycle for June 2017. Approximately $26 million of related revenue requirements in excess of the 2% maximum was deferred for inclusion in the 2018 filing.
Fuel Cost Recovery
At September 30, 2017, the amount of over-recovered retail fuel costs included on the condensed balance sheet was $2 million compared to $37 million at December 31, 2016.
On November 15, 2017, Mississippi Power is expected to file its annual rate adjustment under the retail fuel cost recovery clause.rates. The ultimate outcome of this matter cannot be determined at this time.
Ad Valorem Tax Adjustment
On July 6, 2017, the March 31, 2023, Mississippi PSC approved Mississippi Power'sPower submitted its annual ad valorem tax adjustment factor filing for 2017,2023, which included anrequested a $7 million annual rate increase of 0.85%, or $8 million in annual retail revenues, primarily due to increased assessments.
Provision for Property Damage
On October 8, 2017, Hurricane Nate hit the Gulf Coast of Mississippi causing minor damage to Mississippi Power's distribution infrastructure. Preliminary storm damage repair costs have been estimated to be immaterial. These costs may be charged to the retail property damage reserve and addressed in a subsequent System Restoration Rider rate filing.decrease in revenues. The ultimate outcome of this matter cannot be determined at this time.
Environmental Compliance Overview Plan
Integrated Coal Gasification Combined CycleOn April 4, 2023, the Mississippi PSC approved Mississippi Power's annual ECO Plan filing, resulting in a $3 million annual increase in revenues effective with the first billing cycle of May 2023.
System Restoration Rider
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual SRR filing, which indicated no change in retail rates. Mississippi Power's minimum annual SRR accrual was increased from $8 million to $12 million.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern Company Gas
Infrastructure Replacement Programs and Capital Projects
Capital expenditures incurred under specific infrastructure replacement programs and capital projects during the first three months of 2023 were as follows:
UtilityProgram
Three Months
Ended
March 31, 2023
(in millions)
Nicor GasInvesting in Illinois$62 
Virginia Natural GasSAVE20 
Atlanta Gas LightSystem Reinforcement Rider32 
Chattanooga GasPipeline Replacement Program
Total$115 
(C) CONTINGENCIES
See Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K for information regarding Mississippi Power's construction of the Kemper IGCC.relating to various lawsuits and other contingencies.
Kemper IGCC Overview
The Kemper IGCC was designed to utilize IGCC technology with an expected output capacity of 582 MWs and to be fueled by locally mined lignite (an abundant, lower heating value coal) from a mine owned by Mississippi Power and situated adjacent to the Kemper IGCC. The mine, operated by North American Coal Corporation, started commercial operation in 2013. In connection with the Kemper IGCC, Mississippi Power constructed approximately 61 miles of CO2 pipeline infrastructure for the transport of captured CO2 for use in enhanced oil recovery.
Kemper IGCC Schedule and Cost Estimate
In 2012, the Mississippi PSC issued the 2012 MPSC CPCN Order, a detailed order confirming the CPCN originally approved by the Mississippi PSC in 2010 authorizing the acquisition, construction, and operation of the Kemper IGCC. The certificated cost estimate of the Kemper IGCC included in the 2012 MPSC CPCN Order was $2.4 billion, net of $245 million of Initial DOE Grants and excluding the cost of the lignite mine and equipment, the cost of the CO2 pipeline facilities, and AFUDC related to the Kemper IGCC. The 2012 MPSC CPCN Order approved a construction cost cap of up to $2.88 billion, with recovery of prudently-incurred costs subject to approval by the Mississippi PSC. The Kemper IGCC was originally projected to be placed in service in May 2014. Mississippi Power placed the combined cycle and the associated common facilities portion of the Kemper IGCC in service in August 2014.General Litigation Matters
The initial production of syngas began on July 14, 2016 for gasifier "B" and on September 13, 2016 for gasifier "A." Mississippi Power achieved integrated operation of both gasifiers on January 29, 2017, including the production of electricity from syngas in both combustion turbines. During testing, the plant produced and captured

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CO2, and produced sulfuric acid and ammonia, each of acceptable quality under the related off-take agreements. However, Mississippi Power experienced numerous challenges during the extended start-up process to achieve integrated operation of the gasifiers on a sustained basis. In May 2017, after achieving these milestones, Mississippi Power determined that a critical system component, the syngas coolers, would need replacement sooner than originally planned, which would require significant lead time and significant cost. In addition, the long-term natural gas price forecast has decreased significantly and the estimated cost of operating and maintaining the facility during the first five full years of operations has increased significantly since certification.
On June 21, 2017, the Mississippi PSC stated its intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC plant, and address all issues associated with the Kemper IGCC. On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a process to suspend operations and start-up activities on the gasifier portion of the Kemper IGCC, given the uncertainty as to the future of the gasifier portion of the Kemper IGCC. Mississippi Power expects to continue to operate the combined cycle portion of the Kemper IGCC as it has done since August 2014.
Mississippi Power's Kemper IGCC 2010 project estimate totaled $2.97 billion, which included capped costs of $2.4 billion. At the time of project suspension in June 2017, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subject to the construction cost cap, and was net of the $137 million in Additional DOE Grants.
Mississippi Power recorded pre-tax charges to income for revisions to the cost estimate above the cost cap for the Kemper IGCC of $196 million ($121 million after tax) in the second quarter through May 31, 2017 and a total of $305 million ($188 million after tax) for year-to-date through May 31, 2017. In the aggregate, Mississippi Power incurred charges of $3.07 billion ($1.89 billion after tax) as a result of changes in the cost estimate above the cost cap for the Kemper IGCC through May 31, 2017. The May 31, 2017 cost estimate included approximately $175 million of estimated costs to be incurred beyond the then-estimated in-service date of June 30, 2017 that were expected to be subject to the $2.88 billion cost cap.
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs associated with the gasification portions of the plant and lignite mine. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the projectRegistrants are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred. In the aggregate, Mississippi Power recorded total pre-tax charges to income for the estimated probable losses on the Kemper IGCC totaling $34 million ($21 million after tax) for the third quarter 2017 and $3.2 billion ($2.2 billion after tax) for the nine months ended September 30, 2017.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC. The Kemper combined cycle balances as presented in the condensed balance sheet at September 30, 2017 include $1.1 billion in property, plant, and equipment, net of $80 million in accumulated depreciation; $15 million in materials and supplies; $10 million in other deferred charges and assets; and $113 million in regulatory assets, net of accumulated amortization of $63 million, of which $21 million is included in other regulatory assets, current and $92 million in other regulatory assets, deferred.

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Rate Recovery of Kemper IGCC Costs
Given the variety of potential scenarios and the uncertainty of the outcome of future regulatory proceedings with the Mississippi PSC (and any subsequent related legal challenges), the ultimate outcome of the rate recovery matters discussed herein, including the resolution of legal challenges, cannot now be determined but could result in further material charges that could have a material impact on Mississippi Power's results of operations, financial condition, and liquidity.
Kemper IGCC Settlement Docket
On June 21, 2017, the Mississippi PSC stated its intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC plant, and address all issues associated with the Kemper IGCC. The Kemper Settlement Order established the Kemper IGCC Settlement Docket. The Mississippi PSC requested any such proposed settlement agreement reflect: (i) at a minimum, no rate increase to Mississippi Power customers (with a rate reduction focused on residential customers encouraged); (ii) removal of all cost risk to customers associated with the Kemper IGCC gasifier and related assets; and (iii) modification or amendment of the CPCN for the Kemper IGCC to allow only for ownership and operation of a natural gas facility.
On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a process to suspend operations and start-up activities on the gasifier portion of the Kemper IGCC, given the uncertainty as to the future of the gasifier portion of the Kemper IGCC. Mississippi Power expects to continue to operate the combined cycle portion of the Kemper IGCC as it has done since August 2014. At the time of project suspension, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subject to the construction cost cap, and was net of the $137 million in Additional DOE Grants.
Mississippi Power reached and filed a settlement agreement on August 21, 2017 with certain parties (not including the MPUS), which it believes met the conditions of the Kemper Settlement Order. The settlement agreement provides for an annual revenue requirement of $126 million for Kemper IGCC-related costs, which would (i) be effective January 1, 2018, (ii) represent no rate increase for customers, and (iii) include no recovery for the costs associated with the gasifier portion of the Kemper IGCC in 2018 or at any future date. In addition, under the settlement agreement, the CPCN for the Kemper IGCC would be modified to limit the Kemper County energy facility to natural gas combined cycle operation and Mississippi Power would, in the future, file a reserve margin plan with the Mississippi PSC. The Mississippi PSC issued a scheduling order, as amended on October 5, 2017, noting Mississippi Power and the MPUS had failed to reach a joint stipulation and ordering a full hearing. The Mississippi PSC is expected to rule on an order resolving this matter in January 2018.
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs associated with the gasification portions of the plant and lignite mine. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which

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$0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimate for the combined cycle portion of the facility, as well as the 15% that was previously contracted to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistent with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.
Prudence
On August 17, 2016, the Mississippi PSC issued an order establishing a discovery docket to manage all filings related to the prudence of the Kemper IGCC. On October 3, 2016, Mississippi Power made a required compliance filing, which included a review and explanation of differences between the Kemper IGCC project estimate set forth in the 2010 CPCN proceedings and the most recent Kemper IGCC project estimate, as well as comparisons of current cost estimates and current expected plant operational parameters to the estimates presented in the 2010 CPCN proceedings for the first five years after the Kemper IGCC was to be placed in service. Compared to amounts presented in the 2010 CPCN proceedings, operations and maintenance expenses have increased an average of $105 million annually and maintenance capital has increased an average of $44 million annually for the first full five years of operations for the Kemper IGCC. Additionally, while the current estimated operational availability estimates reflect ultimate results similar to those presented in the 2010 CPCN proceedings, the ramp up period for the current estimates reflects a lower starting point and a slower escalation rate. On November 17, 2016, Mississippi Power submitted a supplemental filing to the October 3, 2016 compliance filing to present revised non-fuel operations and maintenance expense projections for the first year after the Kemper IGCC was to be placed in service. This supplemental filing included approximately $68 million in additional estimated operations and maintenance costs expected to be required to support the operations of the Kemper IGCC during that period.
Mississippi Power responded to numerous requests for information from interested parties in the discovery docket, which is now complete. Mississippi Power expects the Mississippi PSC to utilize this information in connection with the ultimate resolution of Kemper IGCC cost recovery.
Economic Viability Analysis
In the fourth quarter 2016, as a part of its Integrated Resource Plan process, the Southern Company system completed its regular annual updated fuel forecast, the 2017 Annual Fuel Forecast. This updated fuel forecast reflected significantly lower long-term estimated costs for natural gas than were previously projected. As a result of the updated long-term natural gas forecast, as well as the revised operating expense projections reflected in the discovery docket filings discussed above, on February 21, 2017, Mississippi Power filed an updated project economic viability analysis of the Kemper IGCC as required under the 2012 MPSC CPCN Order confirming authorization of the Kemper IGCC. The project economic viability analysis measures the life cycle economics of the Kemper IGCC compared to feasible alternatives, natural gas combined cycle generating units, under a variety of scenarios and considering fuel, operating and capital costs, and operating characteristics, as well as federal and state taxes and incentives. The reduction in the projected long-term natural gas prices in the 2017 Annual Fuel Forecast and, to a lesser extent, the increase in the estimated Kemper IGCC operating costs, negatively impact the updated project economic viability analysis.
Mississippi Power expects the Mississippi PSC to address this matter in connection with the Kemper IGCC Settlement Docket.
2015 Rate Case
On December 3, 2015, the Mississippi PSC issued the In-Service Asset Rate Order adopting in full the 2015 Stipulation entered into between Mississippi Power and the MPUS regarding the Kemper IGCC assets that were commercially operational and currently providing service to customers (the transmission facilities, combined cycle, natural gas pipeline, and water pipeline) and other related costs. The In-Service Asset Rate Order provided for retail rate recovery of an annual revenue requirement of approximately $126 million, based on Mississippi Power's actual

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average capital structure, with a maximum common equity percentage of 49.733%, a 9.225% return on common equity, and actual embedded interest costs. The In-Service Asset Rate Order also included a prudence finding of all costs in the stipulated revenue requirement calculation for the in-service assets. The stipulated revenue requirement excluded the costs of the Kemper IGCC related to the 15% undivided interest that was previously projected to be purchased by Cooperative Energy but reserved Mississippi Power's right to seek recovery in a future proceeding. See "Termination of Proposed Sale of Undivided Interest" herein for additional information.
In 2011, the Mississippi PSC authorized Mississippi Power to defer all non-capital Kemper IGCC-related costs to a regulatory asset through the in-service date. In connection with the implementation of the In-Service Asset Order and wholesale rates, Mississippi Power began expensing certain ongoing project costs and certain retail debt carrying costs that previously were deferred and began amortizing certain regulatory assets associated with assets placed in service and consulting and legal fees. The amortization periods for these regulatory assets vary from two years to 10 years as set forth in the In-Service Asset Rate Order and the settlement agreement with wholesale customers. As of September 30, 2017, the balance associated with these regulatory assets was $113 million, of which $21 million is included in current assets. See "FERC Matters" herein for additional information related to the 2016 settlement agreement with wholesale customers.
The In-Service Asset Rate Order requires Mississippi Power to submit an annual true-up calculation of its actual cost of capital, compared to the stipulated total cost of capital, for the May 31, 2016 and 2017 calculations. At September 30, 2017, Mississippi Power's related regulatory liability totaled approximately $10 million.
As required by the In-Service Asset Rate Order, on June 5, 2017, Mississippi Power made a rate filing requesting to adjust the amortization schedules of the regulatory assets reviewed and determined prudent in the In-Service Asset Order in a manner that would not change customer rates or annual revenues. On June 28, 2017, the Mississippi PSC suspended this filing. On July 6, 2017, the Mississippi PSC issued an order requiring Mississippi Power to establish a regulatory liability account to maintain current rates related to the Kemper IGCC following the July 2017 completion of the amortization period for certain regulatory assets approved in the In-Service Asset Rate Order that would allow for subsequent refund if the Mississippi PSC deems the rates unjust and unreasonable. At September 30, 2017, the related regulatory liability totaled $7 million.
2013 MPSC Rate Order
In January 2013, Mississippi Power entered into a settlement agreement with the Mississippi PSC that was intended to establish the process for resolving matters regarding cost recovery related to the Kemper IGCC (2013 Settlement Agreement). Under the 2013 Settlement Agreement, Mississippi Power agreed to limit the portion of prudently-incurred Kemper IGCC costs to be included in retail rate base to the $2.4 billion certificated cost estimate, plus the Cost Cap Exceptions, but excluding AFUDC, and any other costs permitted or determined to be excluded from the $2.88 billion cost cap by the Mississippi PSC. In March 2013, the Mississippi PSC issued a rate order approving retail rate increases of 15% effective March 19, 2013 and 3% effective January 1, 2014, which collectively were designed to collect $156 million annually beginning in 2014 (2013 MPSC Rate Order) to be used to mitigate customer rate impacts after the Kemper IGCC was placed in service, based on a mirror CWIP methodology (Mirror CWIP rate).
On February 12, 2015, the Mississippi Supreme Court reversed the 2013 MPSC Rate Order and, on July 7, 2015, the Mississippi PSC ordered that the Mirror CWIP rate be terminated effective July 20, 2015 and required the fourth quarter 2015 refund of the $342 million previously collected, along with associated carrying costs of $29 million.
Because the 2013 MPSC Rate Order did not provide for the inclusion of CWIP in rate base as permitted by the Baseload Act, Mississippi Power continued to record AFUDC on the Kemper IGCC. Between the original May 2014 estimated in-service date and the June 2017 project suspension date, Mississippi Power recorded $494 million of AFUDC on the Kemper IGCC subject to the $2.88 billion cost cap and Cost Cap Exception amounts, of which $460 million related to the gasification portions of the Kemper IGCC.
Mississippi Power expects the Mississippi PSC to address this matter in connection with the Kemper IGCC Settlement Docket.

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Lignite Mine and CO2 Pipeline Facilities
In conjunction with the Kemper IGCC, Mississippi Power owns the lignite mine and equipment and mineral reserves located around the Kemper IGCC site. The mine started commercial operation in June 2013.
In 2010, Mississippi Power executed a 40-year management fee contract with Liberty Fuels Company, LLC (Liberty Fuels), a wholly-owned subsidiary of The North American Coal Corporation, which developed, constructed, and is responsible for the mining operations through the end of the mine reclamation. As the mining permit holder, Liberty Fuels has a legal obligation to perform mine reclamation and Mississippi Power has a contractual obligation to fund all reclamation activities. In addition to the obligation to fund the reclamation activities, Mississippi Power provides working capital support to Liberty Fuels through cash advances for capital purchases, payroll, and other operating expenses. During the suspension period, these costs are approximately $2 million per month and are being recognized in income as incurred. See Note 1 to the financial statements of Mississippi Power under "Asset Retirement Obligations and Other Costs of Removal" and "Variable Interest Entities" in Item 8 of the Form 10-K for additional information.
In addition, Mississippi Power constructed the CO2 pipeline for the planned transport of captured CO2 for use in enhanced oil recovery. Mississippi Power entered into agreements with Denbury Onshore (Denbury) and Treetop Midstream Services, LLC (Treetop), pursuant to which Denbury would purchase 70% of the CO2 captured from the Kemper IGCC and Treetop would purchase 30% of the CO2 captured from the Kemper IGCC. On June 3, 2016, Mississippi Power cancelled its contract with Treetop and amended its contract with Denbury to reflect, among other things, Denbury's agreement to purchase 100% of the CO2 captured from the Kemper IGCC and an initial contract term of 16 years. Denbury has the right to terminate the contract at any time because Mississippi Power did not place the Kemper IGCC in service by July 1, 2017.
The ultimate outcome of these matters cannot be determined at this time.
Termination of Proposed Sale of Undivided Interest
In 2010 and as amended in 2012, Mississippi Power and Cooperative Energy (formerly known as SMEPA) entered into an agreement whereby Cooperative Energy agreed to purchase a 15% undivided interest in the Kemper IGCC. On May 20, 2015, Cooperative Energy notified Mississippi Power of its termination of the agreement. Mississippi Power previously received a total of $275 million of deposits from Cooperative Energy that were required to be returned to Cooperative Energy with interest. On June 3, 2015, Southern Company, pursuant to its guarantee obligation, returned approximately $301 million to Cooperative Energy. Subsequently, Mississippi Power issued a promissory note in the aggregate principal amount of approximately $301 million to Southern Company, which was repaid in June 2017.
Litigation
On April 26, 2016, a complaint against Mississippi Power was filed in Harrison County Circuit Court (Circuit Court) by Biloxi Freezing & Processing Inc., Gulfside Casino Partnership, and John Carlton Dean, which was amended and refiled on July 11, 2016 to include, among other things, Southern Company as a defendant. The individual plaintiff alleges that Mississippi Power and Southern Company violated the Mississippi Unfair Trade Practices Act. All plaintiffs have alleged that Mississippi Power and Southern Company concealed, falsely represented, and failed to fully disclose important facts concerning the cost and schedule of the Kemper IGCC and that these alleged breaches have unjustly enriched Mississippi Power and Southern Company. The plaintiffs seek unspecified actual damages and punitive damages; ask the Circuit Court to appoint a receiver to oversee, operate, manage, and otherwise control all affairs relating to the Kemper IGCC; ask the Circuit Court to revoke any licenses or certificates authorizing Mississippi Power or Southern Company to engage in any business related to the Kemper IGCC in Mississippi; and seek attorney's fees, costs, and interest. The plaintiffs also seek an injunction to prevent any Kemper IGCC costs from being charged to customers through electric rates. On June 23, 2017, the Circuit Court ruled in favor of motions by Southern Company and Mississippi Power and dismissed the case. On July 7, 2017, the plaintiffs filed notice of an appeal.

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On June 9, 2016, Treetop, Greenleaf CO2 Solutions, LLC (Greenleaf), Tenrgys, LLC, Tellus Energy, LLC, WCOA, LLC, and Tellus Operating Group filed a complaint against Mississippi Power, Southern Company, and SCS in the state court in Gwinnett County, Georgia. The complaint relates to the cancelled CO2 contract with Treetop and alleges fraudulent misrepresentation, fraudulent concealment, civil conspiracy, and breach of contract on the part of Mississippi Power, Southern Company, and SCS and seeks compensatory damages of $100 million, as well as unspecified punitive damages. Southern Company, Mississippi Power, and SCS moved to compel arbitration pursuant to the terms of the CO2 contract, which the court granted on May 4, 2017. On June 28, 2017, Treetop, Greenleaf, Tenrgys, LLC, Tellus Energy, LLC, WCOA, LLC, and Tellus Operating Group filed a claim for arbitration requesting $500 million in damages.
Mississippi Power believes these legal challenges have no merit; however, an adverse outcome in these proceedings could have a material impact on Mississippi Power's results of operations, financial condition, and liquidity. Mississippi Power will vigorously defend itself in these matters, and the ultimate outcome of these matters cannot be determined at this time.
Baseload Act
In 2008, the Baseload Act was signed by the Governor of Mississippi. The Baseload Act authorizes, but does not require, the Mississippi PSC to adopt a cost recovery mechanism that includes in retail base rates, prior to and during construction, all or a portion of the prudently-incurred pre-construction and construction costs incurred by a utility in constructing a base load electric generating plant. Prior to the passage of the Baseload Act, such costs would traditionally be recovered only after the plant was placed in service. The Baseload Act also provides for periodic prudence reviews by the Mississippi PSC and prohibits the cancellation of any such generating plant without the approval of the Mississippi PSC. In the event of cancellation of the construction of the plant without approval of the Mississippi PSC, the Baseload Act authorizes the Mississippi PSC to make a public interest determination as to whether and to what extent the utility will be afforded rate recovery or implement credits, refunds, or rebates to customers for costs incurred in connection with such cancelled generating plant.
Income Tax Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Income Tax Matters" of Mississippi Power in Item 7 of the Form 10-K and Note (G) to the Condensed Financial Statements under "Section 174 Research and Experimental Deduction" herein for additional information on bonus depreciation, investment tax credits, and the Section 174 research and experimental deduction.
Bonus Depreciation
All projected tax benefits previously received for bonus depreciation related to the Kemper IGCC were repaid in connection with third quarter 2017 estimated tax payments. If the suspension of the Kemper IGCC start-up activities ultimately results in an abandonment for income tax purposes, the related deduction would be claimed in the year of the abandonment. See Note (B) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" herein and Note (G) to the Condensed Financial Statements herein for additional information. The ultimate outcome of this matter cannot be determined at this time.
Section 174 Research and Experimental Deduction
Southern Company, on behalf of Mississippi Power, has reflected deductions for R&E expenditures related to the Kemper IGCC in its federal income tax calculations since 2013 and filed amended federal income tax returns for 2008 through 2013 to also include such deductions. In December 2016, Southern Company and the IRS reached a proposed settlement, which was approved on September 8, 2017 by the U.S. Congress Joint Committee on Taxation (JCT), resolving a methodology for these deductions. As a result of the JCT approval, Mississippi Power recognized $176 million of previously unrecognized tax benefits and reversed $36 million of associated accrued interest. See Notes (B) and (G) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" and "Section 174 Research and Experimental Deduction," respectively, herein for additional information.

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MISSISSIPPI POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Other Matters
Mississippi Power is involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Mississippi Power is subject to certain claims and legal actions arising in the ordinary course of business. Mississippi Power's business activities are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements, such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions, CCR, and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.
The ultimate outcome of such pending or potential litigation or regulatory matters against each Registrant and any subsidiaries cannot be predicteddetermined at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Mississippisuch Registrant's financial statements.
The Registrants believe the pending legal challenges discussed below have no merit; however, the ultimate outcome of these matters cannot be determined at this time.
Alabama Power
In September 2022, Mobile Baykeeper filed a citizen suit in the U.S. District Court for the Southern District of Alabama alleging that Alabama Power's financial statements.plan to close the Plant Barry ash pond utilizing a closure-in-place methodology violates the Resource Conservation and Recovery Act (RCRA) and regulations governing CCR. Among other relief requested, Mobile Baykeeper seeks a declaratory judgment that the RCRA and regulations governing CCR are being violated, preliminary and injunctive relief to prevent implementation of Alabama Power's closure plan and the development of a closure plan that satisfies regulations governing CCR requirements. On December 19, 2022, Alabama Power filed a motion to dismiss the case. On January 31, 2023, the EPA issued a Notice of Potential Violations associated with Alabama Power's plan to close the Plant Barry ash pond. Alabama Power submitted responses on March 20, 2023, March 24, 2023, and April 3, 2023 affirming its position that it is in compliance with CCR requirements. The ultimate outcome of these matters cannot be determined at this time but could have an impact on Alabama Power's ARO estimates. See Note (B)6 to the Condensed Financial Statements hereinfinancial statements in Item 8 of the Form 10-K for a discussion of variousAlabama Power's ARO liabilities.
Georgia Power
Municipal Franchise Fees
In 2011, plaintiffs filed a putative class action against Georgia Power in the Superior Court of Fulton County, Georgia alleging that Georgia Power's collection in rates of amounts for municipal franchise fees (which fees are paid to municipalities) exceeded the amounts allowed in orders of the Georgia PSC and alleging certain state law
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(UNAUDITED)
claims. This case has been ruled upon and appealed numerous times over the last several years. In 2019, the Georgia PSC issued an order that found Georgia Power has appropriately implemented the municipal franchise fee schedule. In March 2021, the Superior Court of Fulton County granted class certification and Georgia Power's motion for summary judgment and the plaintiffs filed a notice of appeal. In April 2021, Georgia Power filed a notice of cross appeal on the issue of class certification. In December 2021, the Georgia Court of Appeals affirmed the Superior Court's ruling that granted summary judgment to Georgia Power and dismissed Georgia Power's cross appeal on the issue of class certification as moot. Also in December 2021, the plaintiffs filed a petition for writ of certiorari to the Georgia Supreme Court, which was denied on January 27, 2023. On February 6, 2023, the plaintiffs filed a motion for reconsideration with the Georgia Supreme Court, which was denied on February 16, 2023. This matter is now concluded.
Plant Scherer
In July 2020, a group of individual plaintiffs filed a complaint, which was amended in December 2022, in the Superior Court of Fulton County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer has impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs seek an unspecified amount of monetary damages including punitive damages, a medical monitoring fund, and injunctive relief. Georgia Power has filed multiple motions to dismiss the complaint. In December 2022, the Superior Court of Fulton County, Georgia granted Georgia Power's motion to transfer the case to the Superior Court of Monroe County, Georgia.
In October 2021 and February 2022, a total of seven additional complaints were filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that releases from Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs sought an unspecified amount of monetary damages including punitive damages. In November 2021 and March 2022, Georgia Power removed these cases to the U.S. District Court for the Middle District of Georgia. In November 2022, the plaintiffs voluntarily dismissed their complaints without prejudice. Georgia Power anticipates that these plaintiffs will refile their complaints.
On January 9, 2023, an additional complaint was filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries. The plaintiff sought an unspecified amount of monetary damages, including punitive damages. On January 19, 2023, Georgia Power filed a notice to remove the case to the U.S. District Court for the Middle District of Georgia. On February 21, 2023, the plaintiff voluntarily dismissed the complaint without prejudice. Georgia Power anticipates that this plaintiff will refile the complaint.
The amount of any possible losses from these matters cannot be estimated at this time.
Mississippi Power
In 2018, Ray C. Turnage and 10 other contingencies, regulatory matters,individual plaintiffs filed a putative class action complaint against Mississippi Power and other matters being litigatedthe three then-serving members of the Mississippi PSC in the U.S. District Court for the Southern District of Mississippi, which may affect future earnings potential.
was amended in March 2019 to include four additional plaintiffs. Mississippi Power received Mississippi PSC approval in 2013 to charge a mirror CWIP rate premised upon including in its rate base pre-construction and construction costs for the Kemper IGCC prior to placing the Kemper IGCC into service. The SEC is conductingMississippi Supreme Court reversed that approval and ordered Mississippi Power to refund the amounts paid by customers under the previously-approved mirror CWIP rate. The plaintiffs allege that the initial approval process, and the amount approved, were improper and make claims for gross negligence, reckless conduct, and intentional wrongdoing. They also allege that Mississippi Power underpaid customers by up to $23.5 million in the refund process by applying an incorrect interest rate. The plaintiffs seek to recover, on behalf of themselves and their putative class, actual damages, punitive damages, pre-judgment interest, post-judgment interest, attorney's fees, and costs. The district court dismissed the amended complaint; however, in March 2020, the plaintiffs filed a formal investigationmotion seeking to name the new members of the Mississippi PSC, the Mississippi Development Authority, and Southern Company as additional defendants and add a cause of action against all defendants based on a dormant commerce
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(UNAUDITED)
clause theory under the U.S. Constitution. In July 2020, the plaintiffs filed a motion for leave to file a third amended complaint, which included the same federal claims as the proposed second amended complaint, as well as several additional state law claims based on the allegation that Mississippi Power concerningfailed to disclose the annual percentage rate of interest applicable to refunds. In November 2020, the district court denied each of the plaintiffs' pending motions and entered final judgment in favor of Mississippi Power. In January 2021, the district court denied further motions by the plaintiffs to vacate the judgment and to file a revised second amended complaint. In February 2021, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. In March 2022, the U.S. Court of Appeals for the Fifth Circuit issued an opinion affirming the dismissal of the claims against the Mississippi PSC defendants but reversing the dismissal of the claims against Mississippi Power. In May 2022, the U.S. Court of Appeals for the Fifth Circuit denied a petition by Mississippi Power for a rehearing en banc and remanded the case to the U.S. District Court for the Southern District of Mississippi for further proceedings. In June 2022, Mississippi Power filed with the trial court a motion to dismiss the complaint with prejudice, which was granted on March 15, 2023. On March 28, 2023, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. An adverse outcome in this proceeding could have a material impact on Mississippi Power's financial statements.
Environmental Remediation
The Southern Company system must comply with environmental laws and regulations governing the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the natural gas distribution utilities in Illinois and Georgia have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental remediation costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.
Georgia Power's environmental remediation liability was $15 million at both March 31, 2023 and December 31, 2022. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such sites is expected.
Southern Company Gas' environmental remediation liability was $243 million and $256 million at March 31, 2023 and December 31, 2022, respectively, based on the estimated costscost of environmental investigation and expected in-service date of the Kemper IGCC. Southern Company and Mississippi Power believe the investigation is focused primarily on periods subsequent to 2010 and on accounting matters, disclosure controls and procedures, and internal controls over financial reportingremediation associated with the Kemper IGCC. See ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" herein for additional information on the Kemper IGCC. known former manufactured gas plant operating sites.
The ultimate outcome of this matterthese matters cannot be determined at this time; however, itas a result of the regulatory treatment for environmental remediation expenses described above, the final disposition of these matters is not expected to have a material impact on the financial statements of Mississippi Power.the applicable Registrants.
ACCOUNTING POLICIESOther Matters
Application of Critical Accounting Policies and EstimatesTraditional Electric Operating Companies
MississippiIn April 2019, Bellsouth Telecommunications d/b/a AT&T Alabama (AT&T) filed a complaint against Alabama Power prepares its financial statements in accordance with GAAP. Significant accounting policies are described in Note 1the FCC alleging that the pole rental rate AT&T is required to pay pursuant to the financial statementsparties' joint use agreement is unjust and unreasonable under federal law. The complaint sought a new rate and approximately $87 million in refunds of Mississippi Poweralleged overpayments for the preceding six years. In August 2019, the FCC stayed the case in Item 8favor of the Form 10-K. In the applicationarbitration, which AT&T has not pursued. The ultimate outcome of these policies, certain estimates are made that maythis matter cannot be determined at this time, but an adverse outcome could have a material impact on Mississippi Power's results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Applicationstatements of Critical Accounting PoliciesSouthern Company and Estimates" ofAlabama Power. Georgia Power and Mississippi Power in Item 7 of the Form 10-K for a complete discussion of Mississippi Power's critical accounting policies and estimates related to Utility Regulation, Asset Retirement Obligations, Pension and Other Postretirement Benefits, AFUDC, Unbilled Revenues, and Contingent Obligations.
Kemper IGCC Rate Recovery
For periods prior to the second quarter 2017, significant accounting estimates included Kemper IGCC estimated construction costs, project completion date, and rate recovery. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Kemper IGCC Estimated Construction Costs, Project Completion Date, and Rate Recovery" of Mississippi Power in Item 7 of the Form 10-K for additional information. Mississippi Power recorded total pre-tax charges to income related to the Kemper IGCC of $428 million ($264 million after tax) in 2016, $365 million ($226 million after tax) in 2015, $868 million ($536 million after tax) in 2014, and $1.2 billion ($729 million after tax) in prior years.
As a result of the Mississippi PSC's June 21, 2017 stated intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant rather than an IGCC plant, as well as Mississippi Power's June 28, 2017 suspension of the operation and start-up of the gasifier portion of the Kemper IGCC, the estimated construction costs and

have joint use agreements with other AT&T affiliates.
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MISSISSIPPI POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

Mississippi Power
project completion date are no longer considered significant accounting estimates. Significant accounting estimates for the September 30, 2017 financial statements presented herein include the overall assessment of rate recovery for the Kemper County energy facility and the estimated costs for the potential cancellation of the Kemper IGCC.
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject toIn August 2022, the Mississippi PSC's jurisdiction, including the potential resolutionDepartment of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recoveryRevenue (Mississippi DOR) completed an audit of the gasification portions is no longer probable; therefore,sales and use taxes paid by Mississippi Power recorded an additional chargefrom 2016 to income in June 20172019 and entered a final assessment, indicating a total amount due of $2.8 billion ($2.0 billion after tax), which includes$28 million, including associated penalties and interest. Additional interest of approximately $1 million was estimated costs associatedthrough March 31, 2023. Mississippi Power does not agree with the gasification portions of the plantaudit findings and, lignite mine. In the third quarter 2017, Mississippi Power recordedin October 2022, filed an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which $0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimate for the combined cycle portion of the facility, as well as the 15% that was previously contracted to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistentadministrative appeal with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.
In the aggregate, since the Kemper IGCC project started, Mississippi Power has incurred charges of $6.00 billion ($3.96 billion after tax) through September 30, 2017. Mississippi Power recorded total pre-tax charges to income for the estimated probable losses on the Kemper IGCC of $34 million ($21 million after tax) and $88 million ($54 million after tax) in the third quarter 2017 and the third quarter 2016, respectively, and total pre-tax charges of $3.2 billion ($2.2 billion after tax) and $222 million ($137 million after tax) year-to-date in 2017 and 2016, respectively.
Given the significant judgment involved in estimating the costs to cancel the gasifier portion of the Kemper IGCC, the ultimate rate recovery for the Kemper IGCC, including the $0.5 billion of combined cycle-related costs not yet in rates, and the impact on Mississippi Power's results of operations, Mississippi Power considers these items to be critical accounting estimates.DOR. See Note 3 to the financial statements of Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K under "Other Matters – Mississippi Power – Department of Revenue Audit" for information regarding a Mississippi PSC accounting order related to the tax audit proceeding. The ultimate outcome of this matter cannot be determined at this time.
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(UNAUDITED)
(D) REVENUE FROM CONTRACTS WITH CUSTOMERS AND LEASE INCOME
Revenue from Contracts with Customers
The Registrants generate revenues from a variety of sources, some of which are not accounted for as revenue from contracts with customers, such as leases, derivatives, and certain cost recovery mechanisms. See Note 1 to the financial statements under "Revenues" in Item 8 of the Form 10-K for additional information on the revenue policies of the Registrants. See "Lease Income" herein and Note (B)(J) for additional information on revenue accounted for under lease and derivative accounting guidance, respectively.
The following table disaggregates revenue from contracts with customers for the three months ended March 31, 2023 and 2022:
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2023
Operating revenues
Retail electric revenues
Residential$1,525 $659 $801 $65 $ $ 
Commercial1,251 430 753 68   
Industrial789 398 313 78   
Other27 3 22 2   
Total retail electric revenues3,592 1,490 1,889 213   
Natural gas distribution revenues
Residential896     896 
Commercial232     232 
Transportation319     319 
Industrial23     23 
Other117     117 
Total natural gas distribution revenues1,587     1,587 
Wholesale electric revenues
PPA energy revenues284 72 12 4 202  
PPA capacity revenues190 60 11 32 89  
Non-PPA revenues36 20 3 107 103  
Total wholesale electric revenues510 152 26 143 394  
Other natural gas revenues
Gas marketing services231     231 
Other natural gas revenues11     11 
Total natural gas revenues242     242 
Other revenues310 54 132 11 11  
Total revenue from contracts with customers6,241 1,696 2,047 367 405 1,829 
Other revenue sources(*)
239 (49)129 23 103 46 
Total operating revenues$6,480 $1,647 $2,176 $390 $508 $1,875 
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(UNAUDITED)
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2022
Operating revenues
Retail electric revenues
Residential$1,525 $634 $821 $70 $— $— 
Commercial1,178 375 738 65 — — 
Industrial727 323 334 70 — — 
Other26 20 — — 
Total retail electric revenues3,456 1,336 1,913 207 — — 
Natural gas distribution revenues
Residential1,016 — — — — 1,016 
Commercial270 — — — — 270 
Transportation337 — — — — 337 
Industrial32 — — — — 32 
Other129 — — — — 129 
Total natural gas distribution revenues1,784 — — — — 1,784 
Wholesale electric revenues
PPA energy revenues342 59 32 251 — 
PPA capacity revenues134 39 12 81 — 
Non-PPA revenues58 64 102 73 — 
Total wholesale electric revenues534 162 53 108 405 — 
Other natural gas revenues
Gas marketing services243 — — — — 243 
Other natural gas revenues16 — — — — 16 
Total natural gas revenues259 — — — — 259 
Other revenues225 48 95 — 
Total revenue from contracts with customers6,258 1,546 2,061 324 413 2,043 
Other revenue sources(*)
390 103 147 11 126 15 
Total operating revenues$6,648 $1,649 $2,208 $335 $539 $2,058 
(*)Other revenue sources relate to revenues from customers accounted for as derivatives and leases, alternative revenue programs at Southern Company Gas, and cost recovery mechanisms and revenues that meet other scope exceptions for revenues from contracts with customers at the traditional electric operating companies.
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(UNAUDITED)
Contract Balances
The following table reflects the closing balances of receivables, contract assets, and contract liabilities related to revenues from contracts with customers at March 31, 2023 and December 31, 2022:
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Accounts Receivable
At March 31, 2023$2,433 $622 $672 $79 $119 $853 
At December 31, 20223,123 696 922 92 237 1,107 
Contract Assets
At March 31, 2023$160 $$74 $— $— $19 
At December 31, 2022156 89 — — — 
Contract Liabilities
At March 31, 2023$61 $$14 $$$— 
At December 31, 202245 — — 
Contract assets for Georgia Power primarily relate to retail customer fixed bill programs, where the payment is contingent upon Georgia Power's continued performance and the customer's continued participation in the program over a one-year contract term, and unregulated service agreements, where payment is contingent on project completion. Contract liabilities for Georgia Power primarily relate to cash collections recognized in advance of revenue for unregulated service agreements. At March 31, 2023, Southern Company Gas' contract assets relate to work performed on an energy efficiency enhancement and upgrade contract with the U.S. General Services Administration. Southern Company Gas receives cash advances from a third-party financial institution to fund work performed, of which approximately $30 million had been received at March 31, 2023. These advances have been accounted for as long-term debt on the balance sheets. See Note 1 to the Condensedfinancial statements under "Affiliate Transactions" in Item 8 of the Form 10-K for additional information regarding the construction contract. At March 31, 2023 and December 31, 2022, Southern Company's unregulated distributed generation business had contract assets of $64 million and $65 million, respectively, and contract liabilities of $44 million and $32 million, respectively, for outstanding performance obligations.
Revenues recognized in the three months ended March 31, 2023, which were included in contract liabilities at December 31, 2022, were $19 million for Southern Company and immaterial for the other Registrants.
Remaining Performance Obligations
The Subsidiary Registrants may enter into long-term contracts with customers in which revenues are recognized as performance obligations are satisfied over the contract term. For Alabama Power, Georgia Power, and Southern Power, these contracts primarily relate to PPAs whereby electricity and generation capacity are provided to a customer. The revenue recognized for the delivery of electricity is variable; however, certain PPAs include a fixed payment for fixed generation capacity over the term of the contract. For Southern Company Gas, these contracts primarily relate to the U.S. General Services Administration contract described above. Southern Company's unregulated distributed generation business also has partially satisfied performance obligations related to certain fixed price contracts. Revenues from contracts with customers related to these performance obligations remaining at March 31, 2023 are expected to be recognized as follows:
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(UNAUDITED)
2023 (remaining)2024202520262027Thereafter
(in millions)
Southern Company$632 $553 $347 $315 $319 $2,089 
Alabama Power17 — — — 
Georgia Power68 60 25 13 14 23 
Southern Power268 345 302 303 310 2,077 
Southern Company Gas15 29 — — — — 
Lease Income
Lease income for the three months ended March 31, 2023 and 2022 is as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi
Power
Southern PowerSouthern Company Gas
 (in millions)
For the Three Months Ended March 31, 2023
Lease income - interest income on sales-type leases$$— $— $$$— 
Lease income - operating leases49 18 21 
Variable lease income69 — — — 75 — 
Total lease income$124 $18 $$$98 $
For the Three Months Ended March 31, 2022
Lease income - interest income on sales-type leases$$— $— $$$— 
Lease income - operating leases51 20 — 21 
Variable lease income84 — — — 90 — 
Total lease income$141 $20 $$$113 $
Lease payments received under "Integrated Coal Gasification Combined Cycle" hereintolling arrangements and PPAs consist of either scheduled payments or variable payments based on the amount of energy produced by the underlying electric generating units. Lease income for additional information.Alabama Power and Southern Power is included in wholesale revenues.
Recently Issued Accounting Standards
(E) CONSOLIDATED ENTITIES AND EQUITY METHOD INVESTMENTS
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Mississippi PowerNote 7 to the financial statements in Item 78 of the Form 10-K for additional information.
In 2014,
Southern Company
At March 31, 2023 and December 31, 2022, Southern Holdings had equity method investments totaling $120 million and $112 million, respectively, primarily related to investments in venture capital funds focused on energy and utility investments. Earnings from these investments were immaterial for both periods presented.
Southern Power
Variable Interest Entities
Southern Power has certain subsidiaries that are determined to be VIEs. Southern Power is considered the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacingprimary beneficiary of these VIEs because it controls the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principlemost significant activities of the standard isVIEs, including operating and maintaining the respective assets, and has the obligation to recognize revenueabsorb expected losses of these VIEs to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Mississippi Power expects mostextent of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. The majority of Mississippi Power's revenue, including

equity interests.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

SP Solar and SP Wind
energy providedAt March 31, 2023 and December 31, 2022, SP Solar had total assets of $5.8 billion and $5.9 billion, respectively, total liabilities of $0.4 billion, and noncontrolling interests of $1.0 billion and $1.1 billion, respectively. Cash distributions from SP Solar are allocated 67% to customers,Southern Power and 33% to Global Atlantic in accordance with their partnership interest percentage. Under the terms of the limited partnership agreement, distributions without limited partner consent are limited to available cash and SP Solar is from tariff offerings that provide electricity without a defined contractual term, as well as longer-term contractual commitments, including PPAs. Mississippi Power expects that the revenue from contracts with these customers will not result in a significant shiftobligated to distribute all such available cash to its partners each quarter. Available cash includes all cash generated in the timingquarter subject to the maintenance of revenue recognition forappropriate operating reserves.
At March 31, 2023 and December 31, 2022, SP Wind had total assets of $2.2 billion, total liabilities of $172 million and $169 million, respectively, and noncontrolling interests of $39 million. Under the terms of the limited liability agreement, distributions without Class A member consent are limited to available cash and SP Wind is obligated to distribute all such sales.available cash to its members each quarter. Available cash includes all cash generated in the quarter subject to the maintenance of appropriate operating reserves. Cash distributions from SP Wind are generally allocated 60% to Southern Power and 40% to the three financial investors in accordance with the limited liability agreement.
Mississippi Power's ongoing evaluationSouthern Power consolidates both SP Solar and SP Wind, as the primary beneficiary, since it controls the most significant activities of each entity, including operating and maintaining their assets. Certain transfers and sales of the assets in the VIEs are subject to partner consent and the liabilities are non-recourse to the general credit of Southern Power. Liabilities consist of customary working capital items and do not include any long-term debt.
Other Variable Interest Entities
Southern Power has other revenue streamsconsolidated VIEs that relate to certain subsidiaries that have either sold noncontrolling interests to tax equity investors or acquired less than a 100% interest from facility developers. These entities are considered VIEs because the arrangements are structured similar to a limited partnership and related contracts includes unregulated sales to customers. Some revenue arrangements, such as alternative revenue programs,the noncontrolling members do not have substantive kick-out rights.
At March 31, 2023 and December 31, 2022, the other VIEs had total assets of $1.8 billion, total liabilities of $0.2 billion, and noncontrolling interests of $0.8 billion. Under the terms of the partnership agreements, distributions of all available cash are excludedrequired each month or quarter and additional distributions require partner consent.
Equity Method Investments
At December 31, 2022, Southern Power had equity method investments in wind and battery energy storage projects totaling $49 million. During the first quarter 2023, Southern Power sold its remaining equity method investments in the projects and received proceeds of $50 million. Earnings (loss) from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on Mississippi Power's financial statements, if material. In addition, the power and utilities industry continues to evaluate other specific industry issues,these investments, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Mississippi Power expects CIAC to be out ofgains associated with the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Mississippi Power intends to use the modified retrospective method of adoption effective January 1, 2018. Mississippi Power has also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in Mississippi Power's financial statements, Mississippi Power will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectivelysales, were immaterial for the presentation of the service cost componentthree months ended March 31, 2023 and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Mississippi Power's operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Mississippi Power's financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Mississippi Power is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Mississippi Power's financial statements.

2022.
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MISSISSIPPI POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

Southern Company Gas
FINANCIAL CONDITION AND LIQUIDITYEquity Method Investments
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Overview"The carrying amounts of Mississippi Power in Item 7 of the Form 10-KSouthern Company Gas' equity method investments at March 31, 2023 and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" herein for additional information. EarningsDecember 31, 2022 and related earnings from those investments for the ninethree months ended September 30, 2017March 31, 2023 and 2022 were negatively affected by revisions to the cost estimate for the Kemper IGCC.as follows:
Mississippi Power's capital expenditures and debt maturities are expected to materially exceed operating cash flows through 2022. Projected capital expenditures in that period include investments to maintain existing generation facilities, to add environmental modifications to existing generating units, and to expand and improve transmission and distribution facilities.
Investment BalanceMarch 31, 2023December 31, 2022
(in millions)
SNG$1,249 $1,243 
Other33 33 
Total$1,282 $1,276 
In the second quarter 2017, Mississippi Power borrowed an additional $40 million under a promissory note issued to Southern Company. In June 2017, Southern Company made equity contributions totaling $1.0 billion to Mississippi Power. Mississippi Power used a portion of the proceeds to prepay $901 million of outstanding debt.
As of September 30, 2017, Mississippi Power's current liabilities exceeded current assets by approximately $769 million primarily due to $935 million in long-term debt that matures within the next 12 months and $94 million of short-term debt. Mississippi Power intends to utilize operating cash flows, lines of credit, and bank term loans, as market conditions permit, as well as, under certain circumstances, commercial paper and/or equity contributions and/or loans from Southern Company to fund Mississippi Power's short-term capital needs.
Net cash provided from operating activities totaled $361 million for the first nine months of 2017, a decrease of $12 million as compared to the corresponding period in 2016. The decrease in cash provided from operating activities is primarily due to deferred income taxes related to the Kemper IGCC, partially offset by the timing of payments received from affiliates and customers and the completion of Mirror CWIP refunds in 2016. See Notes (B) and (G) to the Condensed Financial Statements under "Integrated Coal Gasification Combined CycleRate Recovery of Kemper IGCC Costs" and "Unrecognized Tax BenefitsSection 174 Research and Experimental Deduction" herein for additional information. Net cash used for investing activities totaled $483 million for the first nine months of 2017 primarily due to gross property additions related to the Kemper IGCC. Net cash provided from financing activities totaled $129 million for the first nine months of 2017 primarily due to capital contributions from Southern Company, partially offset by redemptions of long-term debt and short-term borrowings. Cash flows from financing activities vary from period to period based on capital needs and the maturity or redemption of securities.
Significant balance sheet changes for the first nine months of 2017 include an increase in paid-in capital of $1.0 billion due to capital contributions from Southern Company, a portion of which was used to repay $300 million of securities due within one year, $591 million of long-term debt, and $10 million of short-term debt. Securities due within one year decreased $551 million due to the repayment of promissory notes to Southern Company. Long-term debt decreased primarily due to the reclassification of $1.2 billion in unsecured term loans to securities due within one year. Other significant changes include decreases of $2.5 billion in CWIP, $756 million in accumulated deferred income taxes, and $299 million in deferred charges related to income taxes. All of these changes primarily resulted from the Kemper IGCC suspension and related estimated loss. Income taxes receivable and unrecognized tax benefits also decreased due to tax refunds associated with the IRS Section 174 R&E settlement. See FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" and Notes (B) and (G) to the Condensed Financial Statements under "Integrated Coal Gasification Combined Cycle" and "Section 174 Research and Experimental Deduction," respectively, herein for additional information.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Mississippi Power in Item 7 of the Form 10-K for a description of Mississippi Power's capital requirements for its construction program, including estimated capital expenditures for new generating resources and to comply with existing environmental statutes and regulations,

Three Months Ended March 31,
Earnings from Equity Method Investments20232022
(in millions)
SNG$44 $39 
Other1 
Total$45 $40 
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MISSISSIPPI POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

(F) FINANCING AND LEASES
scheduled maturities of long-term debt, as well as related interest, leases, purchase commitments, derivative obligations, preferred stock dividends, trust funding requirements, and unrecognized tax benefits. Approximately $935 million will be required through September 30, 2018 to fund maturities of long-term debt and $4 million will be required to fund maturities of short-term debt. In addition, Mississippi Power has $40 million of tax-exempt variable rate demand obligations that are supported by short-term credit facilities and $50 million of fixed rate pollution control revenue bonds that are required to be remarketed over the next 12 months. See "Sources of Capital" and FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle" herein for additional information.Bank Credit Arrangements
The construction program of Mississippi Power is currently estimated to be $582 million for 2017, $203 million for 2018, $177 million for 2019, $204 million for 2020, $199 million for 2021, and $240 million for 2022. These estimated expenditures do not include potential compliance costs that may arise from the EPA's final rules and guidelines or future state plans that would limit CO2 emissions from existing, new, modified, or reconstructed fossil-fuel-fired electric generating units.
The construction program is subject to periodic review and revision, and actual construction costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in load projections; storm impacts; changes in environmental statutes and regulations; the outcome of any legal challenges to the environmental rules; changes in generating plants, including unit retirements and replacements and adding or changing fuel sources at existing units, to meet regulatory requirements; changes in FERC rules and regulations; Mississippi PSC approvals; changes in the expected environmental compliance program; changes in legislation; the cost and efficiency of construction labor, equipment, and materials; project scope and design changes; and the cost of capital.
Sources of Capital
Mississippi Power plans to obtain the funds required for construction and other purposes from operating cash flows, external security issuances, term loans, and/or short-term debt, as well as, under certain circumstances, equity contributions and/or loans from Southern Company. The amount, type, and timing of future financings will depend upon regulatory approval, prevailing market conditions, and other factors, which includes resolution of the Kemper County energy facility cost recovery. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" and – FUTURE EARNINGS POTENTIAL – "Integrated Coal Gasification Combined Cycle – Rate Recovery of Kemper IGCC Costs" of Mississippi Power in Item 7 of the Form 10-K for additional information.
On February 28, 2017, the maturity dates for $551 million in promissory notes to Southern Company were extended to July 31, 2018. In the second quarter 2017, Mississippi Power borrowed an additional $40 million under a promissory note issued to Southern Company. In June 2017, Southern Company made equity contributions totaling $1.0 billion to Mississippi Power. Mississippi Power used a portion of the proceeds to (i) prepay $300 million of the outstanding principal amount under its $1.2 billion unsecured term loan; (ii) repay all of the $591 million outstanding principal amount of promissory notes to Southern Company; and (iii) repay $10 million of the outstanding principal amount of bank loans.
In September 2017, Mississippi Power issued a floating rate promissory note to Southern Company in an aggregate principal amount of up to $150 million bearing interest based on one-month LIBOR. Mississippi Power borrowed $109 million under this promissory note primarily to satisfy its federal income tax obligations for the quarter ending September 30, 2017 and subsequently repaid the promissory note upon receipt of its income tax refund from the U.S. federal government related to the settlement concerning deductible R&E expenditures. See Note (G) to the Condensed Financial Statements under "Section 174 Research and Experimental Deduction" herein for additional information.
As of September 30, 2017, Mississippi Power's current liabilities exceeded current assets by approximately $769 million primarily due to $935 million in long-term debt that matures within the next 12 months and $94 million of short-term debt. Mississippi Power intends to utilize operating cash flows, lines of credit, and bank term loans, as

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

market conditions permit, as well as, under certain circumstances, commercial paper and/or equity contributions and/or loans from Southern Company to fund Mississippi Power's short-term capital needs. Specifically, Mississippi Power has been informed by Southern Company that in the event sufficient funds are not available from external sources, Southern Company intends to provide Mississippi Power with loans and/or equity contributions sufficient to fund the remaining indebtedness scheduled to mature and other cash needs over the next 12 months. Therefore, Mississippi Power's financial statement presentation contemplates continuation of Mississippi Power as a going concern as a result of Southern Company's anticipated ongoing financial support of Mississippi Power. For additional information, see Notes 1 and 68 to the financial statements of Mississippi Power under "Recently Issued Accounting Standards" and "Going Concern," respectively, in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Going Concern" herein.
At September 30, 2017, Mississippi Power had approximately $231 million of cash and cash equivalents. Committed credit arrangements with banks at September 30, 2017 were as follows:
Expires   
Executable Term
Loans
 
Expires Within One
Year
2017 Total Unused 
One
Year
 
Two
Years
 
Term
Out
 
No Term
Out
(in millions)
$100
 $100
 $100
 $
 $
 $
 $100
See Note 6 to the financial statements of Mississippi Power under "Bank Credit Arrangements" in Item 8 of the Form 10-K for additional information.
At March 31, 2023, committed credit arrangements with banks were as follows:
Expires
Company2023202420252026TotalUnusedExpires within
One Year
(in millions)
Southern Company parent$— $— $— $2,000 $2,000 $1,998 $— 
Alabama Power— 550 — 700 1,250 1,250 — 
Georgia Power— — — 1,750 1,750 1,726 — 
Mississippi Power— 150 125 — 275 225 — 
Southern Power(a)
— — — 600 600 587 — 
Southern Company Gas(b)
250 — — 1,500 1,750 1,748 250 
SEGCO30 — — — 30 30 30 
Southern Company$280 $700 $125 $6,550 $7,655 $7,564 $280 
(a)Does not include Southern Power Company's $75 million and Note (E)$100 million continuing letter of credit facilities for standby letters of credit, expiring in 2025 and 2026, respectively, of which $9 million and $16 million, respectively, was unused at March 31, 2023. In March 2023, Southern Power amended the $100 million letter of credit facility, which, among other things, extended the expiration date from 2025 to 2026 and increased the amount from $75 million. Southern Power's subsidiaries are not parties to its bank credit arrangements or letter of credit facilities.
(b)Southern Company Gas, as the parent entity, guarantees the obligations of Southern Company Gas Capital, which is the borrower of $800 million of the credit arrangement expiring in 2026. Southern Company Gas' committed credit arrangement expiring in 2026 also includes $700 million for which Nicor Gas is the borrower and which is restricted for working capital needs of Nicor Gas. Pursuant to the Condensed Financial Statementsmulti-year credit arrangement expiring in 2026, the allocations between Southern Company Gas Capital and Nicor Gas may be adjusted. Nicor Gas is also the borrower under "Bank Credit Arrangements" herein for additional information.a $250 million credit arrangement expiring in 2023.
Most of theseSubject to applicable market conditions, Southern Company and its subsidiaries expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, Southern Company and its subsidiaries may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
These bank credit arrangements, as well as Mississippi Power'sthe term loan agreement,arrangements of the Registrants, Nicor Gas, and SEGCO, contain covenants that limit debt levels and typically contain cross accelerationcross-acceleration or, in the case of Southern Power, cross-default provisions to other indebtedness (including guarantee obligations) that are restricted only to the indebtedness of Mississippi Power.the individual company. Such cross-default provisions to other indebtedness would trigger an event of default if Southern Power defaulted on indebtedness or guarantee obligations over a specified threshold. Such cross-acceleration provisions to other indebtedness would trigger an event of default if Mississippi Powerthe applicable borrower defaulted on indebtedness, the payment of which was then accelerated. At September 30, 2017, Mississippi Power wasMarch 31, 2023, the Registrants, Nicor Gas, and SEGCO were in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowing.
Subject to applicable market conditions, Mississippi Power expects to seek to renew or replace its credit arrangements as needed, prior to expiration. In connection therewith, Mississippi Power may extend the maturity dates and/or increase or decrease the lending commitments thereunder.borrowings.
A portion of the $100 million unused credit arrangements with banks is allocated to provide liquidity support to Mississippi Power's pollution controlthe revenue bonds.bonds of the traditional electric operating companies and the commercial paper programs of the Registrants, Nicor Gas, and SEGCO. The amount of variable rate pollution control revenue bonds of the traditional electric operating companies outstanding requiring liquidity support as of September 30, 2017at March 31, 2023 was approximately $40 million.$1.7 billion (comprised of approximately $789 million at Alabama Power, $819 million at Georgia Power, and $69 million at Mississippi Power). In addition, at September 30, 2017, MississippiMarch 31, 2023, Alabama Power and Georgia Power had approximately $50$120 million and $285 million, respectively, of fixed rate pollution controlrevenue bonds outstanding that wereare required to be remarketed within the next 12 months.
Short-term borrowings
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Convertible Senior Notes
In February 2023, Southern Company issued $1.5 billion aggregate principal amount of Series 2023A 3.875% Convertible Senior Notes due December 15, 2025 (Series 2023A Convertible Senior Notes). In March 2023, Southern Company issued an additional $225 million aggregate principal amount of the Series 2023A Convertible Senior Notes upon the exercise by the initial purchasers of their over-allotment option.
Interest on the Series 2023A Convertible Senior Notes is payable semiannually, beginning June 15, 2023. The Series 2023A Convertible Senior Notes will mature on December 15, 2025, unless earlier converted or repurchased, but are not redeemable at the option of Southern Company. The Series 2023A Convertible Senior Notes are direct, unsecured, and unsubordinated obligations of Southern Company, ranking equally with all of Southern Company's other unsecured and unsubordinated indebtedness from time to time outstanding, and are effectively subordinated to all secured indebtedness of Southern Company.
Holders may convert their Series 2023A Convertible Senior Notes at their option prior to the close of business on the business day preceding September 15, 2025, but only under the following circumstances:
during any calendar quarter (and only during such calendar quarter), if the last reported sale price of Southern Company's common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day as determined by Southern Company;
during the five business day period after any 10 consecutive trading day period (Measurement Period) in which the trading price per $1,000 principal amount of Series 2023A Convertible Senior Notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of the common stock and the conversion rate on each such trading day; or
upon the occurrence of certain corporate events specified in the indenture governing the Series 2023A Convertible Senior Notes.
On or after September 15, 2025, a holder may convert all or any portion of its Series 2023A Convertible Senior Notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions.
Southern Company will settle conversions of the Series 2023A Convertible Senior Notes by paying cash up to the aggregate principal amount of the Series 2023A Convertible Senior Notes to be converted and paying or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at Southern Company's election, in respect of the remainder, if any, of Southern Company's conversion obligation in excess of the aggregate principal amount of the Series 2023A Convertible Senior Notes being converted. The Series 2023A Convertible Senior Notes are initially convertible at a rate of 11.8818 shares of common stock per $1,000 principal amount converted, which is approximately equal to $84.16 per share of common stock. The conversion rate will be subject to adjustment upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the indenture governing the Series 2023A Convertible Senior Notes), Southern Company will, in certain circumstances, increase the conversion rate by a number of additional shares of common stock for conversions in connection with the make-whole fundamental change.
Upon the occurrence of a fundamental change (as defined in the indenture governing the Series 2023A Convertible Senior Notes), holders of the Series 2023A Convertible Senior Notes may require Southern Company to purchase all or a portion of their Series 2023A Convertible Senior Notes, in principal amounts equal to $1,000 or an integral multiple thereof, for cash at a price equal to 100% of the principal amount of the Series 2023A Convertible Senior Notes to be purchased plus any accrued and unpaid interest.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Earnings per Share
For Southern Company, the only difference in computing basic and diluted earnings per share (EPS) is attributable to awards outstanding under stock-based compensation plans and the Series 2023A Convertible Senior Notes. EPS dilution resulting from stock-based compensation plans is determined using the treasury stock method and EPS dilution resulting from the Series 2023A Convertible Senior Notes is determined using the net share settlement method. See Note 12 to the financial statements in Item 8 of the Form 10-K and "Convertible Senior Notes" herein for additional information. Shares used to compute diluted EPS were as follows:
Three Months Ended March 31,
20232022
 (in millions)
As reported shares1,091 1,063 
Effect of stock-based compensation7 
Diluted shares1,098 1,069 
For the three months ended March 31, 2023, there were no anti-dilutive shares. For the three months ended March 31, 2022, an immaterial number of stock-based compensation awards was excluded from the diluted EPS calculation because the awards were anti-dilutive.
For both periods presented, there was no dilution resulting from the Series 2023A Convertible Senior Notes.
Southern Company Leveraged Lease
See Note 9 to the financial statements in Item 8 of the Form 10-K for information on a leveraged lease agreement related to energy generation. In June 2022, the Southern Holdings subsidiary operating the generating plant for the lessee provided notice to the lessee to terminate the related operating and maintenance agreement effective June 30, 2023. Subsequently, the lessee failed to make the semi-annual lease payment due in December 2022. As a result, the Southern Holdings subsidiary was unable to make its corresponding payment to the holders of the underlying non-recourse debt related to the generation assets. The parties to the lease have entered into a forbearance agreement which suspends the related contractual rights of the parties while they continue restructuring negotiations, which could result in rescission of the termination notice. The ultimate outcome of this matter cannot be determined at this time, but is not expected to have a material impact on Southern Company's financial statements. Southern Company will continue to monitor the operational performance of the underlying assets and evaluate the ability of the lessee to continue to make the required lease payments and meet its obligations associated with a future closure or retirement of the generation assets and associated properties, including the dry ash landfill.
(G) INCOME TAXES
See Note 10 to the financial statements in Item 8 of the Form 10-K for additional tax information.
Current and Deferred Income Taxes
Tax Credit and Net Operating Loss Carryforwards
The utilization of each Registrant's estimated tax credit and state net operating loss carryforwards and related valuation allowances could be impacted by numerous factors, including the acquisition of additional renewable projects, the purchase of rights to additional PTCs of Plant Vogtle Units 3 and 4 pursuant to certain joint ownership agreements, an increase in Georgia Power's ownership interest in Plant Vogtle Units 3 and 4, changes in taxable income projections, and potential income tax rate changes. See Note (B) and Note 2 to the financial statements in Item 8 of the Form 10-K under "Georgia Power – Nuclear Construction" for additional information on Plant Vogtle Units 3 and 4.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Effective Tax Rate
Southern Company's effective tax rate is typically lower than the statutory rate due to employee stock plans' dividend deduction, non-taxable AFUDC equity at the traditional electric operating companies, flowback of excess deferred income taxes at the regulated utilities, and federal income tax benefits from ITCs and PTCs primarily at Southern Power.
Details of significant changes in the effective tax rate for the applicable Registrants are provided herein.
Southern Company
Southern Company's effective tax rate was 10.8% for the three months ended March 31, 2023 compared to 14.9% for the corresponding period in 2022. The effective tax rate decrease was primarily due to an increase in the flowback of certain excess deferred income taxes at Alabama Power in 2023, partially offset by the flowback of certain excess deferred income taxes ending in 2022 at Georgia Power.
Alabama Power
Alabama Power's effective tax benefit rate was (0.8)% for the three months ended March 31, 2023 compared to an effective tax rate of 23.3% for the corresponding period in 2022. The effective tax rate decrease was primarily due to an increase in the flowback of certain excess deferred income taxes in 2023. See Note 2 to the financial statements under "Alabama Power – Excess Accumulated Deferred Income Tax Accounting Order" in Item 8 of the Form 10-K for additional information.
Georgia Power
Georgia Power's effective tax rate was 15.1% for the three months ended March 31, 2023 compared to 7.3% for the corresponding period in 2022. The effective tax rate increase was primarily due to the flowback of certain excess deferred income taxes ending in 2022.
Southern Power
Southern Power's effective tax benefit rate was (20.7)% for the three months ended March 31, 2023 compared to (80.0)% for the corresponding period in 2022. The effective tax rate increase was primarily due to higher pre-tax earnings and the impacts of noncontrolling interests.
(H) RETIREMENT BENEFITS
The Southern Company system has a qualified defined benefit, trusteed, pension plan covering substantially all employees, with the exception of employees at PowerSecure. The qualified pension plan is funded in accordance with requirements of the Employee Retirement Income Security Act of 1974, as amended (ERISA). No mandatory contributions to the qualified pension plan are anticipated for the year ending December 31, 2023. The Southern Company system also provides certain non-qualified defined benefits for a select group of management and highly compensated employees, which are funded on a cash basis. In addition, the Southern Company system provides certain medical care and life insurance benefits for retired employees through other postretirement benefit plans. The traditional electric operating companies fund other postretirement trusts to the extent required by their respective regulatory commissions. Southern Company Gas has a separate unfunded supplemental retirement health care plan that provides medical care and life insurance benefits to employees of discontinued businesses.
See Note 11 to the financial statements in Item 8 of the Form 10-K for additional information.
On each Registrant's condensed statements of income, the service cost component of net periodic benefit costs is included in other operations and maintenance expenses and all other components of net periodic benefit costs are included in notes payableother income (expense), net. Components of the net periodic benefit costs for the three months ended March 31, 2023 and 2022 are presented in the following tables.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2023
Pension Plans
Service cost$69 $16 $17 $$$
Interest cost156 36 48 11 
Expected return on plan assets(307)(74)(96)(14)(4)(22)
Amortization:
Prior service costs— — — — — (1)
Regulatory asset— — — — — 
Net (gain) loss— — (1)
Net periodic pension income$(74)$(20)$(28)$(4)$— $(3)
Postretirement Benefits
Service cost$$$$— $— $— 
Interest cost18 — 
Expected return on plan assets(21)(8)(7)(1)— (2)
Amortization:
Regulatory asset— — — — — 
Net gain(3)(1)(1)— — (1)
Net periodic postretirement benefit cost (income)$(2)$(4)$(1)$— $— $
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2022
Pension Plans
Service cost$103 $25 $26 $$$
Interest cost102 24 31 
Expected return on plan assets(316)(77)(99)(15)(4)(22)
Amortization:
Prior service costs— — — — — (1)
Regulatory asset— — — — — 
Net loss60 16 18 
Net periodic pension cost (income)$(51)$(12)$(24)$(3)$$(1)
Postretirement Benefits
Service cost$$$$— $— $— 
Interest cost10 — — 
Expected return on plan assets(20)(8)(7)— — (2)
Amortization:
Regulatory asset— — — — — 
Net periodic postretirement benefit cost (income)$(4)$(4)$(1)$— $— $
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(I) FAIR VALUE MEASUREMENTS
At March 31, 2023, assets and liabilities measured at fair value on a recurring basis during the period, together with their associated level of the fair value hierarchy, were as follows:
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Southern Company
Assets:
Energy-related derivatives(a)
$$100 $— $— $104 
Interest rate derivatives— — — 
Investments in trusts:(b)(c)
Domestic equity680 192 — — 872 
Foreign equity138 162 — — 300 
U.S. Treasury and government agency securities— 316 — — 316 
Municipal bonds— 48 — — 48 
Pooled funds – fixed income— — — 
Corporate bonds— 403 — — 403 
Mortgage and asset backed securities— 90 — — 90 
Private equity— — — 160 160 
Cash and cash equivalents— — — 
Other40 12 — 61 
Cash equivalents433 13 — — 446 
Other investments29 — 46 
Total$1,306 $1,374 $$169 $2,857 
Liabilities:
Energy-related derivatives(a)
$40 $354 $— $— $394 
Interest rate derivatives— 261 — — 261 
Foreign currency derivatives— 218 — — 218 
Contingent consideration— — 12 — 12 
Other— 13 — — 13 
Total$40 $846 $12 $— $898 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Alabama Power
Assets:
Energy-related derivatives$— $32 $— $— $32 
Nuclear decommissioning trusts:(b)
Domestic equity404 185 — — 589 
Foreign equity138 — — — 138 
U.S. Treasury and government agency securities— 19 — — 19 
Municipal bonds— — — 
Corporate bonds— 223 — — 223 
Mortgage and asset backed securities— 22 — — 22 
Private equity— — — 160 160 
Other— — 16 
Cash equivalents193 13 — — 206 
Other investments— 29 — — 29 
Total$742 $524 $— $169 $1,435 
Liabilities:
Energy-related derivatives$— $96 $— $— $96 
Georgia Power
Assets:
Energy-related derivatives$— $22 $— $— $22 
Nuclear decommissioning trusts:(b)(c)
Domestic equity276 — — 277 
Foreign equity— 161 — — 161 
U.S. Treasury and government agency securities— 297 — — 297 
Municipal bonds— 47 — — 47 
Corporate bonds— 180 — — 180 
Mortgage and asset backed securities— 68 — — 68 
Other33 12 — — 45 
Total$309 $788 $— $— $1,097 
Liabilities:
Energy-related derivatives$— $132 $— $— $132 
Interest rate derivatives— — — 
Total$— $133 $— $— $133 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Mississippi Power
Assets:
Energy-related derivatives$— $35 $— $— $35 
Cash equivalents— — — 
Total$$35 $— $— $38 
Liabilities:
Energy-related derivatives$— $62 $— $— $62 
Southern Power
Assets:
Energy-related derivatives$— $$— $— $
Cash equivalents13 — — — 13 
Total$13 $$— $— $18 
Liabilities:
Energy-related derivatives$— $14 $— $— $14 
Foreign currency derivatives— 47 — — 47 
Contingent consideration— — 12 — 12 
Other— 13 — — 13 
Total$— $74 $12 $— $86 
Southern Company Gas
Assets:
Energy-related derivatives(a)
$$$— $— $10 
Interest rate derivatives— — — 
Non-qualified deferred compensation trusts:
Domestic equity— — — 
Foreign equity— — — 
Pooled funds – fixed income— — — 
Cash equivalents— — — 
Cash equivalents and restricted cash55 — — — 55 
Total$61 $21 $— $— $82 
Liabilities:
Energy-related derivatives(a)
$40 $50 $— $— $90 
Interest rate derivatives— 72 — — 72 
Total$40 $122 $— $— $162 
(a)Excludes cash collateral of $60 million.
(b)Excludes receivables related to investment income, pending investment sales, payables related to pending investment purchases, and currencies. See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(c)Includes investment securities pledged to creditors and collateral received and excludes payables related to the securities lending program. At March 31, 2023, approximately $37 million of the fair market value of Georgia Power's nuclear decommissioning trust funds' securities were on loan to creditors under the funds' managers' securities lending program. See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
Southern Company, Alabama Power, and Georgia Power continue to elect the option to fair value investment securities held in the nuclear decommissioning trust funds. The fair value of the funds, including reinvested interest and dividends and excluding the funds' expenses, increased (decreased) by the amounts shown in the table below for the three months ended March 31, 2023 and 2022. The changes were recorded as a change to the regulatory assets and liabilities related to AROs for Georgia Power and Alabama Power, respectively.
Three Months Ended
Fair value increases (decreases)March 31, 2023March 31, 2022
(in millions)
Southern Company$102 $(150)
Alabama Power45 (67)
Georgia Power57 (83)
Valuation Methodologies
The energy-related derivatives primarily consist of exchange-traded and over-the-counter financial products for natural gas and physical power products, including, from time to time, basis swaps. These are standard products used within the energy industry and are valued using the market approach. The inputs used are mainly from observable market sources, such as forward natural gas prices, power prices, implied volatility, and overnight index swap interest rates. Interest rate derivatives are also standard over-the-counter products that are valued using observable market data and assumptions commonly used by market participants. The fair value of interest rate derivatives reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future interest rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and occasionally, implied volatility of interest rate options. The fair value of cross-currency swaps reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future foreign currency exchange rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and discount rates. The interest rate derivatives and cross-currency swaps are categorized as Level 2 under Fair Value Measurements as these inputs are based on observable data and valuations of similar instruments. See Note (J) for additional information on how these derivatives are used.
For fair value measurements of the investments within the nuclear decommissioning trusts and the non-qualified deferred compensation trusts, external pricing vendors are designated for each asset class with each security specifically assigned a primary pricing source. For investments held within commingled funds, fair value is determined at the end of each business day through the net asset value, which is established by obtaining the underlying securities' individual prices from the primary pricing source. A market price secured from the primary source vendor is then evaluated by management in its valuation of the assets within the trusts. As a general approach, fixed income market pricing vendors gather market data (including indices and market research reports) and integrate relative credit information, observed market movements, and sector news into proprietary pricing models, pricing systems, and mathematical tools. Dealer quotes and other market information, including live trading levels and pricing analysts' judgments, are also obtained when available.
The NRC requires licensees of commissioned nuclear power reactors to establish a plan for providing reasonable assurance of funds for future decommissioning. See Note 6 to the financial statements under "Nuclear Decommissioning" in Item 8 of the Form 10-K for additional information.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern Power has contingent payment obligations related to certain acquisitions whereby it is primarily obligated to make generation-based payments to the seller, which commenced at the commercial operation of the respective facility and continue through 2026. The obligations are categorized as Level 3 under Fair Value Measurements as the fair value is determined using significant unobservable inputs for the forecasted facility generation in MW-hours, as well as other inputs such as a fixed dollar amount per MW-hour, and a discount rate. The fair value of contingent consideration reflects the net present value of expected payments and any periodic change arising from forecasted generation is expected to be immaterial.
Southern Power also has payment obligations through 2040 whereby it must reimburse the transmission owners for interconnection facilities and network upgrades constructed to support connection of a Southern Power generating facility to the transmission system. The obligations are categorized as Level 2 under Fair Value Measurements as the fair value is determined using observable inputs for the contracted amounts and reimbursement period, as well as a discount rate. The fair value of the obligations reflects the net present value of expected payments.
"Other investments" primarily includes investments traded in the open market that have maturities greater than 90 days, which are categorized as Level 2 under Fair Value Measurements and are comprised of corporate bonds, bank certificates of deposit, treasury bonds, and/or agency bonds.
At March 31, 2023, the fair value measurements of private market investments held in Alabama Power's nuclear decommissioning trusts that are calculated at net asset value per share (or its equivalent) as a practical expedient totaled $169 million and unfunded commitments related to the private market investments totaled $75 million. Private market investments include high-quality private equity funds across several market sectors, funds that invest in real estate assets, and a private credit fund. Private market funds do not have redemption rights. Distributions from these funds will be received as the underlying investments in the funds are liquidated.
At March 31, 2023, other financial instruments for which the carrying amount did not equal fair value were as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi PowerSouthern Power
Southern Company Gas(*)
(in billions)
Long-term debt, including securities due within one year:
Carrying amount$56.1 $10.6 $14.9 $1.5 $3.0 $7.5 
Fair value51.6 9.5 13.7 1.3 2.9 6.7 
(*)The long-term debt of Southern Company Gas is recorded at amortized cost, including the fair value adjustments at the effective date of the 2016 merger with Southern Company. Southern Company Gas amortizes the fair value adjustments over the remaining lives of the respective bonds, the latest being through 2043.
The fair values are determined using Level 2 measurements and are based on quoted market prices for the same or similar issues or on the current rates available to the Registrants.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(J) DERIVATIVES
The Registrants are exposed to market risks, including commodity price risk, interest rate risk, weather risk, and occasionally foreign currency exchange rate risk. To manage the volatility attributable to these exposures, each company nets its exposures, where possible, to take advantage of natural offsets and enters into various derivative transactions for the remaining exposures pursuant to each company's policies in areas such as counterparty exposure and risk management practices. For the traditional electric operating companies, Southern Power, and Southern Company Gas' other businesses, each company's policy is that derivatives are to be used primarily for hedging purposes and mandates strict adherence to all applicable risk management policies. Derivative positions are monitored using techniques including, but not limited to, market valuation, value at risk, stress testing, and sensitivity analysis. Derivative instruments are recognized at fair value in the balance sheets. Detailssheets as either assets or liabilities and are presented on a net basis. See Note (I) for additional fair value information. In the statements of short-term borrowingscash flows, any cash impacts of settled energy-related and interest rate derivatives are recorded as operating activities. Any cash impacts of settled foreign currency derivatives are classified as operating or financing activities to correspond with the classification of the hedged interest or principal, respectively. See Note 1 to the financial statements under "Financial Instruments" in Item 8 of the Form 10-K for additional information.
Energy-Related Derivatives
The Subsidiary Registrants enter into energy-related derivatives to hedge exposures to electricity, natural gas, and other fuel price changes. However, due to cost-based rate regulations and other various cost recovery mechanisms, the traditional electric operating companies and the natural gas distribution utilities have limited exposure to market volatility in energy-related commodity prices. Each of the traditional electric operating companies and certain of the natural gas distribution utilities of Southern Company Gas manage fuel-hedging programs, implemented per the guidelines of their respective state PSCs or other applicable state regulatory agencies, through the use of financial derivative contracts, which are expected to continue to mitigate price volatility. The traditional electric operating companies (with respect to wholesale generating capacity) and Southern Power have limited exposure to market volatility in energy-related commodity prices because their long-term sales contracts shift substantially all fuel cost responsibility to the purchaser. However, the traditional electric operating companies and Southern Power may be exposed to market volatility in energy-related commodity prices to the extent any uncontracted capacity is used to sell electricity. Southern Company Gas retains exposure to price changes that can, in a volatile energy market, be material and can adversely affect its results of operations.
Southern Company Gas also enters into weather derivative contracts as economic hedges in the event of warmer-than-normal weather. Exchange-traded options are carried at fair value, with changes reflected in operating revenues. Non-exchange-traded options are accounted for using the intrinsic value method. Changes in the intrinsic value for non-exchange-traded contracts are reflected in operating revenues.
Energy-related derivative contracts are accounted for under one of three methods:
Regulatory Hedges – Energy-related derivative contracts designated as regulatory hedges relate primarily to the traditional electric operating companies' and the natural gas distribution utilities' fuel-hedging programs, where gains and losses are initially recorded as regulatory liabilities and assets, respectively, and then are included in fuel expense as the underlying fuel is used in operations and ultimately recovered through an approved cost recovery mechanism.
Cash Flow Hedges – Gains and losses on energy-related derivatives designated as cash flow hedges (which are mainly used to hedge anticipated purchases and sales) are initially deferred in accumulated OCI before being recognized in the statements of income in the same period and in the same income statement line item as the earnings effect of the hedged transactions.
Not Designated – Gains and losses on energy-related derivative contracts that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Some energy-related derivative contracts require physical delivery as opposed to financial settlement, and this type of derivative is both common and prevalent within the electric and natural gas industries. When an energy-related derivative contract is settled physically, any cumulative unrealized gain or loss is reversed and the contract price is recognized in the respective line item representing the actual price of the underlying goods being delivered.
At March 31, 2023, the net volume of energy-related derivative contracts for natural gas positions, together with the longest hedge date over which the respective entity is hedging its exposure to the variability in future cash flows for forecasted transactions and the longest non-hedge date for derivatives not designated as hedges, were as follows:
Net
Purchased
mmBtu
Longest
Hedge
Date
Longest
Non-Hedge
Date
(in millions)
Southern Company(*)
43720302028
Alabama Power11120262023
Georgia Power12220262023
Mississippi Power8620272023
Southern Power1120302023
Southern Company Gas(*)
10720282028
  Short-term Debt at September 30, 2017 
Short-term Debt During the Period(*)
  
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Average
Amount
Outstanding
 
Weighted
Average
Interest
Rate
 
Maximum
Amount
Outstanding
  (in millions)   (in millions)   (in millions)
Short-term bank debt $4
 3.8% $28
 2.8% $126
(*)Southern Company Gas' derivative instruments include both long and short natural gas positions. A long position is a contract to purchase natural gas and a short position is a contract to sell natural gas. Southern Company Gas' volume represents the net of long natural gas positions of 113.6 million mmBtu and short natural gas positions of 6.6 million mmBtu at March 31, 2023, which is also included in Southern Company's total volume.
(*)Average and maximum amounts are based upon daily balances during the three-month period ended September 30, 2017.

In addition to the volumes discussed above, the traditional electric operating companies and Southern Power enter into physical natural gas supply contracts that provide the option to sell back excess natural gas due to operational constraints. The maximum expected volume of natural gas subject to such a feature is 22 million mmBtu for Southern Company, which includes 6 million mmBtu for Alabama Power, 8 million mmBtu for Georgia Power, 3 million mmBtu for Mississippi Power, and 5 million mmBtu for Southern Power.
For cash flow hedges of energy-related derivatives, the estimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to earnings for the 12-month period ending March 31, 2024 are $(42) million for Southern Company, $(12) million for Southern Power, $(30) million for Southern Company Gas, and immaterial for the other Registrants.
148
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MISSISSIPPI POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

Interest Rate Derivatives
Credit Rating RiskSouthern Company and certain subsidiaries may enter into interest rate derivatives to hedge exposure to changes in interest rates. Derivatives related to existing variable rate securities or forecasted transactions are accounted for as cash flow hedges where the derivatives' fair value gains or losses are recorded in OCI and are reclassified into earnings at the same time and presented on the same income statement line item as the earnings effect of the hedged transactions. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings on the same income statement line item. Fair value gains or losses on derivatives that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.
At September 30, 2017,March 31, 2023, the following interest rate derivatives were outstanding:
Notional
Amount
Weighted
Average Interest
Rate Paid
Interest
Rate
Received
Hedge
Maturity
Date
Fair Value Gain (Loss) at March 31, 2023
 (in millions)   (in millions)
Cash Flow Hedges of Forecasted Debt
Georgia Power$750 3.63%N/AFebruary 2033$(1)
Southern Company parent500 3.47%N/AJune
2033
— 
Southern Company Gas250 3.40%N/AAugust
2033
Fair Value Hedges of Existing Debt
Southern Company parent400 1-month LIBOR + 0.68%1.75%March 2028(45)
Southern Company parent1,000 1-month LIBOR + 2.36%3.70%April
2030
(142)
Southern Company Gas500 1-month LIBOR + 0.38%1.75%January 2031(71)
Southern Company$3,400 $(258)
For cash flow hedges of interest rate derivatives, the estimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to interest expense for the 12-month period ending March 31, 2024 are $(15) million for Southern Company and immaterial for the other Registrants. Deferred gains and losses related to interest rate derivatives are expected to be amortized into earnings through 2052 for Southern Company, Alabama Power, and Georgia Power, 2028 for Mississippi Power, doesand 2046 for Southern Company Gas.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Foreign Currency Derivatives
Southern Company and certain subsidiaries, including Southern Power, may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars. Derivatives related to forecasted transactions are accounted for as cash flow hedges where the derivatives' fair value gains or losses are recorded in OCI and are reclassified into earnings at the same time and on the same income statement line as the earnings effect of the hedged transactions, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Southern Company has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of OCI.
At March 31, 2023, the following foreign currency derivatives were outstanding:
Pay NotionalPay
Rate
Receive NotionalReceive
Rate
Hedge
Maturity Date
Fair Value Gain (Loss) at March 31, 2023
(in millions)(in millions) (in millions)
Cash Flow Hedges of Existing Debt
Southern Power$564 3.78%500 1.85%June 2026$(47)
Fair Value Hedges of Existing Debt
Southern Company parent1,476 3.39%1,250 1.88%September 2027(171)
Southern Company$2,040 1,750 $(218)
For cash flow hedges of foreign currency derivatives, the estimated pre-tax losses expected to be reclassified from accumulated OCI to earnings for the 12-month period ending March 31, 2024 are $11 million for Southern Power.
Derivative Financial Statement Presentation and Amounts
The Registrants enter into derivative contracts that may contain certain provisions that permit intra-contract netting of derivative receivables and payables for routine billing and offsets related to events of default and settlements. Southern Company and certain subsidiaries also utilize master netting agreements to mitigate exposure to counterparty credit risk. These agreements may contain provisions that permit netting across product lines and against cash collateral. The fair value amounts of derivative assets and liabilities on the balance sheets are presented net to the extent that there are netting arrangements or similar agreements with the counterparties.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
The fair value of energy-related derivatives, interest rate derivatives, and foreign currency derivatives was reflected in the balance sheets as follows:
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Company
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Liabilities from risk management activities$41 $230 $123 $121 
Other deferred charges and assets/Other deferred credits and liabilities53 113 52 44 
Total derivatives designated as hedging instruments for regulatory purposes94 343 175 165 
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Assets from risk management activities/Liabilities from risk management activities 38 27 
Other deferred charges and assets/Other deferred credits and liabilities4 4 
Interest rate derivatives:
Assets from risk management activities/Liabilities from risk management activities2 71 12 62 
Other deferred charges and assets/Other deferred credits and liabilities 191 — 240 
Foreign currency derivatives:
Assets from risk management activities/Liabilities from risk management activities 35 — 34 
Other deferred charges and assets/Other deferred credits and liabilities 183 — 182 
Total derivatives designated as hedging instruments in cash flow and fair value hedges6 522 21 549 
Energy-related derivatives not designated as hedging instruments
Assets from risk management activities/Liabilities from risk management activities4 8 13 13 
Other deferred charges and assets/Other deferred credits and liabilities2 1 
Total derivatives not designated as hedging instruments6 9 15 14 
Gross amounts recognized106 874 211 728 
Gross amounts offset(a)
(57)(118)(70)(111)
Net amounts recognized in the Balance Sheets(b)
$49 $756 $141 $617 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Alabama Power(c)
Energy-related derivatives designated as hedging instruments for regulatory purposes
Other current assets/Other current liabilities$14 $54 $42 $21 
Other deferred charges and assets/Other deferred credits and liabilities18 42 20 18 
Total derivatives designated as hedging instruments for regulatory purposes32 96 62 39 
Gross amounts offset(28)(28)(24)(24)
Net amounts recognized in the Balance Sheets$4 $68 $38 $15 
Georgia Power
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Other current liabilities$10 $86 $36 $43 
Other deferred charges and assets/Other deferred credits and liabilities11 45 18 
Total derivatives designated as hedging instruments for regulatory purposes21 131 42 61 
Interest rate derivatives designated as hedging instruments in cash flow and fair value hedges
Assets from risk management activities/Other current liabilities 1 — — 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities1 1 — 
Gross amounts recognized22 133 42 62 
Gross amounts offset(19)(19)(21)(21)
Net amounts recognized in the Balance Sheets$3 $114 $21 $41 
Mississippi Power(c)
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Other current liabilities$11 $37 $33 $24 
Other deferred charges and assets/Other deferred credits and liabilities24 25 26 
Total derivatives designated as hedging instruments for regulatory purposes35 62 59 32 
Gross amounts offset(25)(25)(17)(17)
Net amounts recognized in the Balance Sheets$10 $37 $42 $15 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Power
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Other current assets/Other current liabilities$ $12 $— $12 
Other deferred charges and assets/Other deferred credits and liabilities4  — 
Foreign currency derivatives:
Other current assets/Other current liabilities 11 — 11 
Other deferred charges and assets/Other deferred credits and liabilities 36 — 36 
Total derivatives designated as hedging instruments in cash flow and fair value hedges4 59 59 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities 2 — 
Other deferred charges and assets/Other deferred credits and liabilities1  — 
Total derivatives not designated as hedging instruments1 2 — 
Gross amounts recognized5 61 59 
Net amounts recognized in the Balance Sheets$5 $61 $$59 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Company Gas
Energy-related derivatives designated as hedging instruments for regulatory purposes
Other current assets/Other current liabilities$6 $53 $12 $33 
Other deferred charges and assets/Other deferred credits and liabilities 1 — — 
Total derivatives designated as hedging instruments for regulatory purposes6 54 12 33 
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Other current assets/Other current liabilities 26 15 
Other deferred charges and assets/Other deferred credits and liabilities 4 
Interest rate derivatives:
Other current assets/Other current liabilities1 19 — 14 
Other deferred charges and assets/Other deferred credits and liabilities 53 — 72 
Total derivatives designated as hedging instruments in cash flow and fair value hedges1 102 105 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities3 5 11 12 
Other deferred charges and assets/Other deferred credits and liabilities1 1 
Total derivatives not designated as hedging instruments4 6 12 13 
Gross amounts recognized11 162 28 151 
Gross amounts offset(a)
18 (43)— (41)
Net amounts recognized in the Balance Sheets(b)
$29 $119 $28 $110 
(a)Gross amounts offset includes cash collateral held on deposit in broker margin accounts of $60 million and $41 million at March 31, 2023 and December 31, 2022, respectively.
(b)Net amounts of derivative instruments outstanding exclude immaterial premium and intrinsic value associated with weather derivatives for both periods presented.
(c)Energy-related derivatives not designated as hedging instruments were immaterial for Alabama Power and Mississippi Power for both periods presented.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
At March 31, 2023 and December 31, 2022, the pre-tax effects of unrealized derivative gains (losses) arising from energy-related derivative instruments designated as regulatory hedging instruments and deferred were as follows:
Regulatory Hedge Unrealized Gain (Loss) Recognized in the Balance Sheet
Derivative Category and Balance Sheet
Location
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern Company Gas
 (in millions)
At March 31, 2023:
Energy-related derivatives:
Other regulatory assets, current$(198)$(44)$(78)$(29)$(47)
Other regulatory assets, deferred(67)(24)(35)(8)— 
Other regulatory liabilities, current19 11 
Other regulatory liabilities, deferred— 
Total energy-related derivative gains (losses)$(237)$(64)$(110)$(27)$(36)
At December 31, 2022:
Energy-related derivatives:
Other regulatory assets, current$(71)$(8)$(26)$(13)$(24)
Other regulatory assets, deferred(23)(7)(14)(2)— 
Other regulatory liabilities, current72 29 19 22 
Other regulatory liabilities, deferred31 20 — 
Total energy-related derivative gains (losses)$$23 $(19)$27 $(22)
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
For the three months ended March 31, 2023 and 2022, the pre-tax effects of cash flow and fair value hedge accounting on accumulated OCI for the applicable Registrants were as follows:
Gain (Loss) Recognized in OCI on DerivativesFor the Three Months Ended March 31,
20232022
(in millions)
Southern Company
Cash flow hedges:
Energy-related derivatives$(45)$42 
Interest rate derivatives(13)
Foreign currency derivatives— (28)
Fair value hedges(*):
Foreign currency derivatives(28)
Total$(86)$27 
Georgia Power
Cash flow hedges:
Interest rate derivatives$(1)$12 
Southern Power
Cash flow hedges:
Energy-related derivatives$(11)$
Foreign currency derivatives— (28)
Total$(11)$(23)
Southern Company Gas
Cash flow hedges:
Energy-related derivatives$(34)$37 
Interest rate derivatives— 
Total$(33)$37 
(*)Represents amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded in OCI.
For the three months ended March 31, 2023, the pre-tax effects of energy-related derivatives designated as cash flow hedging instruments on accumulated OCI were immaterial for Alabama Power and Mississippi Power. There were no such instruments for Alabama Power and Mississippi Power at March 31, 2022.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
For the three months ended March 31, 2023 and 2022, the pre-tax effects of cash flow and fair value hedge accounting on income were as follows:
Location and Amount of Gain (Loss) Recognized in Income on Cash Flow and Fair Value Hedging RelationshipsFor the Three Months Ended March 31,
20232022
(in millions)
Southern Company
Total cost of natural gas$898 $1,095 
Gain (loss) on energy-related cash flow hedges(a)
(20)
Total depreciation and amortization1,111 892 
Gain (loss) on energy-related cash flow hedges(a)
(9)
Total interest expense, net of amounts capitalized(582)(462)
Gain (loss) on interest rate cash flow hedges(a)
(4)(7)
Gain (loss) on foreign currency cash flow hedges(a)
(3)(6)
Gain (loss) on interest rate fair value hedges(b)
43 (123)
Total other income (expense), net147 145 
Gain (loss) on foreign currency cash flow hedges(a)(c)
10 (25)
Gain (loss) on foreign currency fair value hedges(2)(24)
Amount excluded from effectiveness testing recognized in earnings28 (4)
Southern Power
Total depreciation and amortization$128 $120 
Gain (loss) on energy-related cash flow hedges(a)
(9)
Total interest expense, net of amounts capitalized(33)(37)
Gain (loss) on foreign currency cash flow hedges(a)
(3)(6)
Total other income (expense), net2 2 
Gain (loss) on foreign currency cash flow hedges(a)(c)
10 (25)
Southern Company Gas
Total cost of natural gas$898 $1,095 
Gain (loss) on energy-related cash flow hedges(a)
(20)
Total interest expense, net of amounts capitalized(76)(61)
Gain (loss) on interest rate cash flow hedges(a)
(1)(1)
Gain (loss) on interest rate fair value hedges(b)
13 (36)
(a)Reclassified from accumulated OCI into earnings.
(b)For fair value hedges, changes in the fair value of the derivative contracts are generally equal to changes in the fair value of the underlying debt and have no material impact on income.
(c)The reclassification from accumulated OCI into other income (expense), net completely offsets currency gains and losses arising from changes in the U.S. currency exchange rates used to record the euro-denominated notes.
The pre-tax effects of cash flow and fair value hedge accounting on income for energy-related derivatives and interest rate derivatives were immaterial for the traditional electric operating companies for both periods presented.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
At March 31, 2023 and December 31, 2022, the following amounts were recorded on the balance sheets related to cumulative basis adjustments for fair value hedges:
Carrying Amount of the Hedged ItemCumulative Amount of Fair Value Hedging Adjustment included in Carrying Amount of the Hedged Item
Balance Sheet Location of Hedged ItemsAt March 31, 2023At December 31, 2022At March 31, 2023At December 31, 2022
(in millions)(in millions)
Southern Company
Long-term debt$(3,007)$(2,927)$228 $282 
Southern Company Gas
Long-term debt$(428)$(415)$69 $81 
For the three months ended March 31, 2023 and 2022, the pre-tax effects of energy-related derivatives not designated as hedging instruments on the statements of income of Southern Company and Southern Company Gas were as follows:
Gain (Loss)
Three Months Ended
March 31,
Derivatives in Non-Designated Hedging RelationshipsStatements of Income Location20232022
(in millions)
Energy-related derivatives:
Natural gas revenues(*)
$ $
Cost of natural gas13 21 
Total derivatives in non-designated hedging relationships$13 $23 
(*)Excludes immaterial gains (losses) recorded in natural gas revenues associated with weather derivatives for both periods presented.
For the three months ended March 31, 2023 and 2022, the pre-tax effects of energy-related derivatives not designated as hedging instruments were immaterial for the other Registrants.
Contingent Features
The Registrants do not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
On October 4, 2017, Mississippi Power executed agreements with its largest retail customer, Chevron, to continue providing retail service to the Chevron refinery in Pascagoula, Mississippi through 2038. The agreements grant Chevron a security interest in the co-generation assets located at the refinery that is exercisable upon the occurrence of (i) certain bankruptcy events or (ii) other events of default coupled with specific reductions in steam output at the facility and a downgrade of Mississippi Power's credit rating to below investment grade by two of the three rating agencies.
There are certain contractsderivatives that have required or could require collateral, but not accelerated payment, in the event of avarious credit rating change to BBB and/or Baa2 or below. These contracts are for physical electricity purchases and sales, fuel transportation and storage, energy price risk management, and transmission. At September 30, 2017, the maximum potential collateral requirements at a rating below BBB- and/or Baa3 equaled approximately $255 million.
Included in these amounts arechanges of certain agreements that could require collateral in the event that Alabama Power or Georgia Power has a credit rating change to below investment grade.Southern Company subsidiaries. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally,At March 31, 2023, the Registrants had no collateral posted with derivative counterparties to satisfy these arrangements.
For Southern Company and Southern Power, the fair value of interest rate derivative liabilities with contingent features and the maximum potential collateral requirements arising from the credit-risk-related contingent features, at a rating below BBB- and/or Baa3, were $73 million and $23 million, respectively, at March 31, 2023. For the traditional electric operating companies and Southern Power, energy-related derivative liabilities with contingent features and the maximum potential collateral requirements arising from the credit-risk-related contingent features, at a rating below BBB- and/or Baa3, were immaterial at March 31, 2023. The maximum potential collateral requirements arising from the credit-risk-related contingent features for the traditional electric operating companies and Southern Power include certain agreements that could require collateral in the event that one or more Southern Company power pool participants has a credit rating downgrade could impactchange to below investment grade.
Alabama Power and Southern Power maintain accounts with certain regional transmission organizations to facilitate financial derivative transactions and they may be required to post collateral based on the ability of Mississippi Power to access capital markets, and would be likely to impact the cost at which it does so.
On March 1, 2017, Moody's downgraded the senior unsecured debt rating of Mississippi Power to Ba1 from Baa3.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including Mississippi Power) from stable to negative.
On March 30, 2017, Fitch placed the ratings of Mississippi Power on rating watch negative.
On June 22, 2017, Moody's placed the ratings of Mississippi Power on review for downgrade. On September 21, 2017, Moody's revised its rating outlook for Mississippi Power from under review to stable.
Financing Activities
In March 2017, Mississippi Power issued a $9 million short-term bank note bearing interest at 5% per annum, which was repaid in April 2017.
In February 2017, Mississippi Power amended $551 million in promissory notes to Southern Company extending the maturity datesvalue of the notes from December 1, 2017 to July 31, 2018. In the second quarter 2017, Mississippi Power borrowed an additional $40 million under a promissory note issued to Southern Company.
In June 2017, Southern Company made equity contributions totaling $1.0 billion to Mississippi Power. Mississippi Power used a portion of the proceeds to (i) prepay $300 million of the outstanding principal amount under its $1.2 billion unsecured term loan, which matures on March 30, 2018; (ii) repay all of the $591 million outstanding principal amount of promissory notes to Southern Company; and (iii) repay a $10 million short-term bank loan.
In August 2017, Mississippi Power repaid a $12.5 million short-term bank note.
In September 2017, Mississippi Power issued a floating rate promissory note to Southern Companypositions in an aggregate principal amount of up to $150 million bearing interest based on one-month LIBOR. Mississippi Power borrowed $109 million under this promissory note primarily to satisfy its federal income tax obligations for the quarter ending September 30, 2017 and subsequently repaid the promissory note upon receipt of its income tax refund from the U.S. federal government related to the settlement concerning deductible R&E expenditures. See Note (G) to the Condensed Financial Statements under "Section 174 Research and Experimental Deduction" herein for additional information.

149
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MISSISSIPPI POWER COMPANY
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)

In additionthese accounts and the associated margin requirements. At March 31, 2023, cash collateral posted in these accounts was $15 million for Southern Power and immaterial for Alabama Power. Southern Company Gas maintains accounts with brokers or the clearing houses of certain exchanges to any financings thatfacilitate financial derivative transactions. Based on the value of the positions in these accounts and the associated margin requirements, Southern Company Gas may be necessaryrequired to meet capital requirements and contractual obligations, Mississippi Power plans, when economically feasible, to retire higher-cost securities and replacedeposit cash into these obligations with lower-cost capital if market conditions permit.


SOUTHERN POWER COMPANY
AND SUBSIDIARY COMPANIES

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Operating Revenues:       
Wholesale revenues, non-affiliates$510
 $387
 $1,293
 $866
Wholesale revenues, affiliates105
 110
 295
 313
Other revenues3
 3
 9
 10
Total operating revenues618
 500
 1,597
 1,189
Operating Expenses:       
Fuel189
 154
 460
 341
Purchased power, non-affiliates36
 25
 90
 60
Purchased power, affiliates7
 8
 23
 16
Other operations and maintenance83
 81
 272
 246
Depreciation and amortization131
 93
 379
 247
Taxes other than income taxes13
 5
 37
 17
Total operating expenses459

366
 1,261
 927
Operating Income159
 134
 336
 262
Other Income and (Expense):       
Interest expense, net of amounts capitalized(47) (35) (144) (78)
Other income (expense), net3
 2
 3
 3
Total other income and (expense)(44) (33) (141) (75)
Earnings Before Income Taxes115
 101
 195
 187
Income taxes (benefit)(39) (102) (129) (167)
Net Income154
 203
 324
 354
Less: Net income attributable to noncontrolling interests30
 27
 48
 39
Net Income Attributable to Southern Power$124
 $176
 $276
 $315
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
 2017 2016 2017 2016
 (in millions) (in millions)
Net Income$154
 $203
 $324
 $354
Other comprehensive income (loss):       
Qualifying hedges:       
Changes in fair value, net of tax of
$15, $14, $35, and $(1), respectively
25
 23
 58
 (1)
Reclassification adjustment for amounts included in net income,
net of tax of $(12), $(1), $(42), and $7, respectively
(20) (1) (68) 13
Total other comprehensive income (loss)5
 22
 (10) 12
Comprehensive Income159
 225
 314
 366
Less: Comprehensive income attributable to noncontrolling interests30
 27
 48
 39
Comprehensive Income Attributable to Southern Power$129
 $198
 $266
 $327
accounts. At March 31, 2023, cash collateral held on deposit in broker margin accounts was $60 million.
The accompanying notesRegistrants are exposed to losses related to financial instruments in the event of counterparties' nonperformance. The Registrants only enter into agreements and material transactions with counterparties that have investment grade credit ratings by Moody's and S&P or with counterparties who have posted collateral to cover potential credit exposure. The Registrants have also established risk management policies and controls to determine and monitor the creditworthiness of counterparties in order to mitigate their exposure to counterparty credit risk.
Southern Company Gas uses established credit policies to determine and monitor the creditworthiness of counterparties, including requirements to post collateral or other credit security, as well as the quality of pledged collateral. Collateral or credit security is most often in the form of cash or letters of credit from an investment-grade financial institution, but may also include cash or U.S. government securities held by a trustee. Prior to entering a physical transaction, Southern Company Gas assigns its counterparties an internal credit rating and credit limit based on the counterparties' Moody's, S&P, and Fitch ratings, commercially available credit reports, and audited financial statements. Southern Company Gas may require counterparties to pledge additional collateral when deemed necessary.
Southern Company Gas utilizes netting agreements whenever possible to mitigate exposure to counterparty credit risk. Netting agreements enable Southern Company Gas to net certain assets and liabilities by counterparty across product lines and against cash collateral, provided the netting and cash collateral agreements include such provisions. While the amounts due from, or owed to, counterparties are settled net, they relate toare recorded on a gross basis on the balance sheet as energy marketing receivables and energy marketing payables.
The Registrants do not anticipate a material adverse effect on their respective financial statements as a result of counterparty nonperformance.
(K) SEGMENT AND RELATED INFORMATION
Southern Company
The primary businesses of the Southern Company system are electricity sales by the traditional electric operating companies and Southern Power and the distribution of natural gas by Southern Company Gas. The traditional electric operating companies are an integral part of these condensed consolidated financial statements.

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)
 For the Nine Months Ended September 30,
 2017 2016
 (in millions)
Operating Activities:   
Net income$324
 $354
Adjustments to reconcile net income to net cash provided from operating activities —   
Depreciation and amortization, total404
 262
Deferred income taxes240
 (668)
Amortization of investment tax credits(42) (25)
Collateral deposits(1) (80)
Income taxes receivable, non-current(42) 
Other, net(2) 19
Changes in certain current assets and liabilities —   
-Receivables(77) (82)
-Other current assets38
 (15)
-Accounts payable(31) 7
-Accrued taxes79
 483
-Other current liabilities5
 14
Net cash provided from operating activities895
 269
Investing Activities:   
Business acquisitions(1,032) (1,134)
Property additions(218) (1,702)
Change in construction payables(166) (69)
Payments pursuant to LTSAs(99) (58)
Investment in restricted cash(16) (750)
Distribution of restricted cash33
 746
Other investing activities7
 (41)
Net cash used for investing activities(1,491) (3,008)
Financing Activities:   
Increase (decrease) in notes payable, net(89) 692
Proceeds —   
Senior notes
 1,531
Capital contributions from parent company
 800
Other long-term debt43
 63
Redemptions — Other long-term debt(4) (84)
Distributions to noncontrolling interests(89) (22)
Capital contributions from noncontrolling interests79
 367
Purchase of membership interests from noncontrolling interests
 (129)
Payment of common stock dividends(238) (204)
Other financing activities(27) (14)
Net cash provided from (used for) financing activities(325) 3,000
Net Change in Cash and Cash Equivalents(921) 261
Cash and Cash Equivalents at Beginning of Period1,099
 830
Cash and Cash Equivalents at End of Period$178
 $1,091
Supplemental Cash Flow Information:   
Cash paid (received) during the period for —   
Interest (net of $7 and $32 capitalized for 2017 and 2016, respectively)$144
 $49
Income taxes, net(343) 71
Noncash transactions — Accrued property additions at end of period16
 210
The accompanying notes as they relate tovertically integrated utilities providing electric service in three Southeastern states. Southern Power are an integral part of these condensed consolidated financial statements.

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
Assets At September 30, 2017 At December 31, 2016
  (in millions)
Current Assets:    
Cash and cash equivalents $178
 $1,099
Receivables —    
Customer accounts receivable 148
 102
Other 61
 34
Affiliated 74
 57
Fossil fuel stock 15
 15
Materials and supplies 351
 337
Prepaid income taxes 51
 74
Other current assets 26
 39
Total current assets 904
 1,757
Property, Plant, and Equipment:    
In service 13,734
 12,728
Less: Accumulated provision for depreciation 1,823
 1,484
Plant in service, net of depreciation 11,911
 11,244
Construction work in progress 425
 398
Total property, plant, and equipment 12,336
 11,642
Other Property and Investments:    
Intangible assets, net of amortization of $41 and $22
at September 30, 2017 and December 31, 2016, respectively
 417
 436
Total other property and investments 417
 436
Deferred Charges and Other Assets:    
Prepaid LTSAs 77
 101
Accumulated deferred income taxes 400
 594
Income taxes receivable, non-current 53
 11
Other deferred charges and assets — affiliated 6
 13
Other deferred charges and assets — non-affiliated 455
 615
Total deferred charges and other assets 991
 1,334
Total Assets $14,648
 $15,169
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
Liabilities and Stockholders' Equity At September 30, 2017 At December 31, 2016
  (in millions)
Current Liabilities:    
Securities due within one year $864
 $560
Notes payable 120
 209
Accounts payable —    
Affiliated 93
 88
Other 84
 278
Accrued taxes —    
Accrued income taxes 101
 148
Other accrued taxes 30
 7
Accrued interest 36
 36
Acquisitions payable 
 461
Contingent consideration 15
 46
Other current liabilities 58
 70
Total current liabilities 1,401
 1,903
Long-term Debt 4,946
 5,068
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 191
 152
Accumulated deferred ITCs 1,900
 1,839
Asset retirement obligations 76
 64
Other deferred credits and liabilities 232
 304
Total deferred credits and other liabilities 2,399
 2,359
Total Liabilities 8,746
 9,330
Redeemable Noncontrolling Interests 59
 164
Common Stockholder's Equity:    
Common stock, par value $.01 per share —    
Authorized — 1,000,000 shares    
Outstanding — 1,000 shares 
 
Paid-in capital 3,661
 3,671
Retained earnings 762
 724
Accumulated other comprehensive income 25
 35
Total common stockholder's equity 4,448
 4,430
Noncontrolling interests 1,395
 1,245
Total stockholders' equity 5,843
 5,675
Total Liabilities and Stockholders' Equity $14,648
 $15,169
The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


THIRD QUARTER 2017 vs. THIRD QUARTER 2016
AND
YEAR-TO-DATE 2017 vs. YEAR-TO-DATE 2016


OVERVIEW
Southern Powerdevelops, constructs, acquires, owns, and manages power generation assets, including renewable energy and battery energy storage projects, and sells electricity at market-based rates in the wholesale market. Southern Company Gas distributes natural gas through its natural gas distribution utilities and is involved in several other complementary businesses including gas pipeline investments and gas marketing services.
Southern Company's reportable business segments are the sale of electricity by the traditional electric operating companies, the sale of electricity in the competitive wholesale market by Southern Power, continually seeks opportunitiesand the sale of natural gas and other complementary products and services by Southern Company Gas. Revenues from sales by Southern Power to execute its strategy to create value through various transactions including acquisitionsthe traditional electric operating companies were $135 million and $105 million for the three months ended March 31, 2023 and 2022, respectively. Revenues from sales of assets, constructionnatural gas from Southern Company Gas to the traditional electric operating companies and development of new generating facilities,Southern Power were immaterial for both periods presented. The "All Other" column includes the Southern Company parent entity, which does not allocate operating expenses to business segments. Also, this category includes segments below the quantitative threshold for separate disclosure. These segments include providing distributed energy and entry into PPAs primarily with investor-owned utilities, independent power producers, municipalities,resilience solutions and other load-serving entities,deploying microgrids for commercial, industrial, governmental, and utility customers, as well as commercialinvestments in telecommunications and, industrial customers. In general,for the three months ended March 31, 2022, leveraged lease projects. All other inter-segment revenues are not material.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Financial data for business segments and products and services for the three months ended March 31, 2023 and 2022 was as follows:
Electric Utilities
Traditional
Electric Operating
Companies
Southern
Power
EliminationsTotalSouthern Company GasAll
Other
EliminationsConsolidated
(in millions)
Three Months Ended March 31, 2023
Operating revenues$4,113 $508 $(138)$4,483 $1,875 $166 $(44)$6,480 
Segment net income (loss)(a)(b)
610 102  712 309 (154)(5)862 
At March 31, 2023
Goodwill$ $2 $ $2 $5,015 $144 $ $5,161 
Total assets96,223 13,134 (575)108,782 24,222 2,606 (854)134,756 
Three Months Ended March 31, 2022
Operating revenues$4,191 $539 $(221)$4,509 $2,058 $123 $(42)$6,648 
Segment net income (loss)(a)
774 72 — 846 319 (125)(8)1,032 
At December 31, 2022
Goodwill$— $$— $$5,015 $144 $— $5,161 
Total assets95,861 13,081 (659)108,283 24,621 2,665 (678)134,891 
(a)Attributable to Southern Company.
(b)For Southern Power, has constructed or acquired new generating capacity onlyincludes a $16 million pre-tax gain ($12 million after entering into or assuming long-term PPAs for the new facilities.
During the nine months ended September 30, 2017, Southern Power acquired or completed the construction of, and placed in service, approximately 498 MWs of solar and wind facilities. In addition, Southern Power began construction at the recently acquired Cactus Flats wind facility, continued development of its portfolio of wind projects, and continued expansion of the Mankato natural gas facility by 345 MWs of capacity. See FUTURE EARNINGS POTENTIAL "Acquisitions" and "Construction Projects" herein for additional information.
Southern Power is consideringtax) on the sale of up to a one-third equity interest in its solar asset portfolio. The ultimate outcome of this matter cannot be determined at this time.spare parts.
At September 30, 2017, Southern Power had an average investment coverage ratio of 91% through 2021Products and 90% through 2026, with an average remaining contract duration of approximately 16 years. These ratios include the PPAs and capacity associated with facilities currently under construction and acquisitions discussed herein. See FUTURE EARNINGS POTENTIAL "Power Sales Agreements" herein for additional information.Services
Southern Power continues to focus on several key performance indicators, including, but not limited to, peak season equivalent forced outage rate, contract availability, and net income.
 Electric Utilities' Revenues
RetailWholesaleOtherTotal
(in millions)
Three Months Ended March 31, 2023$3,599 $599 $285 $4,483 
Three Months Ended March 31, 20223,613 664 232 4,509 
RESULTS OF OPERATIONS
Net Income
 Southern Company Gas' Revenues
Gas
Distribution
Operations
Gas
Marketing
Services
OtherTotal
(in millions)
Three Months Ended March 31, 2023$1,610 $246 $19 $1,875 
Three Months Ended March 31, 20221,791 243 24 2,058 
87
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$(52) (29.5) $(39) (12.4)
Net income attributable to Southern Power for the third quarter 2017 was $124 million compared to $176 million for the corresponding period in 2016. The decrease was primarily due to decreased income tax benefits from solar ITCs and increased interest expense primarily due to a decrease in capitalized interest associated with completing construction of and placing in service solar facilities, partially offset by additional operating income related to new generating facilities.
Net income attributable to Southern Power for year-to-date 2017 was $276 million compared to $315 million for the corresponding period in 2016. The decrease was primarily due to decreased income tax benefits resulting from a reduction in solar ITCs, partially offset by an increase in wind PTCs, and increased interest expense from debt issuances to fund Southern Power's growth strategy and continuous construction program, partially offset by additional operating income from new generating facilities.
For additional information on new generating facilities placed in service during 2016 and 2017, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Acquisitions" and

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MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

(UNAUDITED)

Southern Company Gas
"Construction Projects"Southern Company Gas manages its business through three reportable segments – gas distribution operations, gas pipeline investments, and gas marketing services. The non-reportable segments are combined and presented as all other.
Gas distribution operations is the largest component of Southern PowerCompany Gas' business and includes natural gas local distribution utilities that construct, manage, and maintain intrastate natural gas pipelines and gas distribution facilities in four states.
Gas pipeline investments consists of joint ventures in natural gas pipeline investments including a 50% interest in SNG and a 50% joint ownership interest in the Dalton Pipeline. These natural gas pipelines enable the provision of diverse sources of natural gas supplies to the customers of Southern Company Gas. See Note 7 to the financial statements under "Southern Company Gas" in Item 78 of the Form 10-K and FUTURE EARNINGS POTENTIAL – "Acquisitions" and "Construction Projects" herein.
Operating Revenues
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$118 23.6 $408 34.3
Total operating revenues include PPA capacity revenues, which are derived primarily from long-term contracts involving natural gas and biomass generating facilities, and PPA energy revenues, which include sales from Southern Power's natural gas, biomass, solar, and wind facilities. To the extent Southern Power has capacity not contracted under a PPA, it may sell power into the wholesale market and, to the extent the generation assets are part of the IIC, as approved by the FERC, it may sell power into the power pool.
Natural Gas and Biomass Capacity and Energy Revenue
Capacity revenues generally represent the greatest contribution to net income and are designed to provide recovery of fixed costs plus a return on investment.
Energy is generally sold at variable cost or is indexed to published gas indices. Energy revenues will vary depending on the energy demand of Southern Power's customers and their generation capacity, as well as the market prices of wholesale energy compared to the cost of Southern Power's energy. Energy revenues also include fees for support services, fuel storage, and unit start charges. Increases and decreases in energy revenues under PPAs that are driven by fuel or purchased power prices are accompanied by an increase or decrease in fuel and purchased power costs and do not have a significant impact on net income.
Solar and Wind Energy Revenue
Southern Power's energy sales from solar and wind generating facilities are predominantly through long-term PPAs that do not have a capacity charge. Customers either purchase the energy output of a dedicated renewable facility through an energy charge or pay a fixed price related to the energy sold to the grid. As a result, Southern Power's ability to recover fixed and variable operations and maintenance expenses is dependent upon the level of energy generated from these facilities, which can be impacted by weather conditions, equipment performance, and other factors.
See FUTURE EARNINGS POTENTIAL – "Power Sales Agreements" herein for additional information regarding Southern Power's PPAs.
Details of Southern Power's operating revenues were as follows:
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 Year-to-Date 2016
 (in millions)
PPA capacity revenues$169
 $149
 $466
 $406
PPA energy revenues299
 247
 765
 532
Total PPA revenues468
 396
 1,231
 938
Non-PPA revenues147
 101
 357
 241
Other revenues3
 3
 9
 10
Total operating revenues$618
 $500
 $1,597
 $1,189

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


In the third quarter 2017, total operating revenues were $618 million, reflecting a $118 million, or 24%, increase from the corresponding period in 2016. The increase in operating revenues was primarily due to the following:
PPA capacity revenues increased $20 million, or 13%, primarily due to additional customer capacity requirements and a new PPA related to natural gas facilities.
PPA energy revenues increased $52 million, or 21%, primarily due to a $55 million increase in sales from new solar and wind facilities, partially offset by a $3 million decrease in sales from natural gas PPAs due to a $24 million decrease in volume primarily due to the expiration of a PPA and reduced customer load, partially offset by a $21 million increase in the average cost of fuel.
Non-PPA revenues increased $46 million, or 46%, due to a $58 million increase in the volume of KWHs sold primarily from uncovered natural gas capacity through short-term opportunity sales, offset by a $12 million decrease in the price of energy in the wholesale markets.
For year-to-date 2017, total operating revenues were $1.6 billion, reflecting a $408 million, or 34%, increase from the corresponding period in 2016. The increase in operating revenues was primarily due to the following:
PPA capacity revenues increased $60 million, or 15%, primarily due to additional customer capacity requirements and a new PPA related to natural gas facilities.
PPA energy revenues increased $233 million, or 44%, primarily due to a $188 million increase in sales from new solar and wind facilities and a $35 million increase in sales from natural gas PPAs primarily due to a $69 million increase in the average cost of fuel, partially offset by a $34 million decrease in volume primarily due to the expiration of a PPA and reduced customer load.
Non-PPA revenues increased $116 million, or 48%, due to a $104 million increase in the volume of KWHs sold primarily from uncovered natural gas capacity through short-term opportunity sales, as well as a $12 million increase in the price of energy in the wholesale markets.
Fuel and Purchased Power Expenses
Fuel costs constitute the single largest expense for Southern Power. In addition, Southern Power purchases a portion of its electricity needs from the wholesale market. Details of Southern Power's generation and purchased power were as follows:
 Third Quarter 2017Third Quarter 2016 Year-to-Date 2017Year-to-Date 2016
 (in billions of KWHs)
Generation12.511.1 33.227.9
Purchased power1.20.9 3.42.5
Total generation and purchased power13.712.0 36.630.4
      
Total generation and purchased power, excluding solar, wind, and tolling agreements7.26.7 17.817.7
Southern Power's PPAs for natural gas and biomass generation generally provide that the purchasers are responsible for either procuring the fuel (tolling agreements) or reimbursing Southern Power for substantially all of the cost of fuel relating to the energy delivered under such PPAs. Consequently, changes in such fuel costs are generally accompanied by a corresponding change in related fuel revenues and do not have a significant impact on net income. Southern Power is responsible for the cost of fuel for generating units that are not covered under PPAs. Power from these generating units is sold into the wholesale market or into the power pool for capacity owned directly by Southern Power.

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Purchased power expenses will vary depending on demand, availability, and the cost of generating resources throughout the Southern Company system and other contract resources. Load requirements are submitted to the power pool on an hourly basis and are fulfilled with the lowest cost alternative, whether that is generation owned by Southern Power, an affiliate company, or external parties. Such purchased power costs are generally recovered through PPA revenues.
Details of Southern Power's fuel and purchased power expenses were as follows:
 Third Quarter 2017
vs.
Third Quarter 2016
 Year-to-Date 2017
vs.
Year-to-Date 2016
 (change in millions) (% change) (change in millions) (% change)
Fuel$35
 22.7 $119
 34.9
Purchased power10
 30.3 37
 48.7
Total fuel and purchased power expenses$45
   $156
  
In the third quarter 2017, total fuel and purchased power expenses increased $45 million, or 24.1%, compared to the corresponding period in 2016. Fuel expense increased $35 million primarily due to a $29 million increase in the average cost of natural gas per KWH generated and an $8 million increase in the volume of KWHs generated, excluding solar, wind, and tolling agreements. Purchased power expense increased $10 million primarily due to an increase in the volume of KWHs purchased.
For year-to-date 2017, total fuel and purchased power expenses increased $156 million, or 37.4%, compared to the corresponding period in 2016. Fuel expense increased $119 million primarily due to a $139 million increase in the average cost of natural gas per KWH generated, partially offset by a $19 million decrease in the volume of KWHs generated, excluding solar, wind, and tolling agreements. Purchased power expense increased $37 million due to a $28 million increase in the volume of KWHs purchased and a $9 million increase associated with the average cost of purchased power.
Other Operations and Maintenance Expenses
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$2 2.5 $26 10.6
In the third quarter 2017, other operations and maintenance expenses were $83 million compared to $81 million for the corresponding period in 2016. The increase was primarily due to a $13 million increase associated with new solar, wind, and gas facilities, partially offset by a $5 million decrease in scheduled outage maintenance expenses and a $5 million decrease in non-outage operations and maintenance expenses.
For year-to-date 2017, other operations and maintenance expenses were $272 million compared to $246 million for the corresponding period in 2016. The increase was primarily due to a $48 million increase associated with new solar, wind, and gas facilities and an $8 million increase associated with employee compensation and expenses in support of Southern Power's overall growth strategy, partially offset by a $22 million decrease in scheduled outage maintenance expenses and an $8 million decrease in non-outage operations and maintenance expenses.

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Depreciation and Amortization
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$38 40.9 $132 53.4
In the third quarter 2017, depreciation and amortization was $131 million compared to $93 million for the corresponding period in 2016. For year-to-date 2017, depreciation and amortization was $379 million compared to $247 million for the corresponding period in 2016. The increases were primarily due to new solar, wind, and gas facilities placed in service.
Taxes Other Than Income Taxes
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$8 160.0 $20 117.6
In the third quarter 2017, taxes other than income taxes were $13 million compared to $5 million for the corresponding period in 2016. For year-to-date 2017, taxes other than income taxes were $37 million compared to $17 million for the corresponding period in 2016. These increases were primarily due to additional property taxes due to new solar, wind, and gas facilities.
Interest Expense, net of Amounts Capitalized
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$12 34.3 $66 84.6
In the third quarter 2017, interest expense, net of amounts capitalized was $47 million compared to $35 million for the corresponding period in 2016. The increase was primarily due to an $8 million decrease in capitalized interest associated with completing construction of and placing in service solar facilities and an increase of $3 million in interest expense due to an increase in average outstanding long-term debt, primarily to fund Southern Power's growth strategy and continuous construction program.
For year-to-date 2017, interest expense, net of amounts capitalized was $144 million compared to $78 million for the corresponding period in 2016. The increase was primarily due to an increase of $39 million in interest expense due to an increase in average outstanding long-term debt, primarily to fund Southern Power's growth strategy and continuous construction program, as well as a $25 million decrease in capitalized interest associated with completing construction of and placing in service solar facilities.
Other Income (Expense), Net
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$1 50.0 $— 
In the third quarter 2017, other income (expense), net was $3 million compared to $2 million for the corresponding period in 2016. Other income (expense), net was $3 million for both year-to-date 2017 and 2016. The changes include increases of $36 million and $152 million from currency losses arising from translation of €1.1 billion euro-denominated fixed-rate notes into U.S. dollars for the third quarter and year-to-date 2017, respectively, fully offset by an equal change in gains on the foreign currency hedges that were reclassified from accumulated OCI into earnings. See Note (H) to the Condensed Financial Statements herein for additional information.

Gas marketing services provides natural gas marketing to end-use customers primarily in Georgia and Illinois through SouthStar.
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Income Taxes (Benefit)
Third Quarter 2017 vs. Third Quarter 2016 Year-to-Date 2017 vs. Year-to-Date 2016
(change in millions) (% change) (change in millions) (% change)
$63 61.8 $38 22.8
InThe all other column includes segments and subsidiaries that fall below the third quarter 2017, income tax benefit was $39 million compared to $102 millionquantitative threshold for the corresponding periodseparate disclosure, including storage and fuels operations. The all other column included a natural gas storage facility in 2016. The decrease was primarily due to a $61 million decreaseTexas through its sale in income tax benefits from solar ITCs.
For year-to-date 2017, income tax benefit was $129 million compared to $167 million for the corresponding period in 2016. The decrease was primarily due to a $102 million decrease in income tax benefits from solar ITCs, partially offset by a $58 million increase in wind PTCs and a $4 million increase resulting from state apportionment rate changes.
November 2022. See Note (G) to the Condensed Financial Statements herein for additional information on income taxes and Note 115 to the financial statements of Southern Power under "Income and Other Taxes""Southern Company Gas" in Item 8 of the Form 10-K for additional information, on ITCs and PTCs.
FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Southern Power's future earnings potential. The level of Southern Power's future earnings depends on numerous factors that affect the opportunities, challenges, and risks of Southern Power's competitive wholesale business. These factors include: Southern Power's ability to achieve sales growth while containing costs; regulatory matters; creditworthiness of customers; total generating capacity available in Southern Power's market areas; the successful remarketing of capacity as current contracts expire; Southern Power's ability to execute its growth strategy, including successful additional investments in renewable and other energy projects, and to develop and construct generating facilities. Current proposals related to potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals, including any potential changes to the availability or realizability of ITCs and PTCs, is dependent on the final form of any legislation enacted and the related transition rules, and cannot be determined at this time, but could have a material impact on Southern Power's consolidated financial statements.
Southern Power is considering the sale of upa natural gas storage facility in California expected to a one-third equity interestbe completed later in its solar asset portfolio. The ultimate outcome of this matter cannot be determined at this time.2023.
DemandBusiness segment financial data for electricity is primarily driven by the pace of economic growth that may be affected by changes in regionalthree months ended March 31, 2023 and global economic conditions,2022 was as well as renewable portfolio standards, which may impact future earnings.follows:
Other factors that could influence future earnings include weather, demand, cost of generation from facilities within the power pool, and operational limitations. For additional information relating to these factors, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL of Southern Power in Item 7 of the Form 10-K.
Power Sales Agreements
See BUSINESS – "The Southern Company System – Southern Power" in Item 1 of the Form 10-K for additional information regarding Southern Power's PPAs. Generally, under the solar and wind generation PPAs, the purchasing party retains the right to keep or resell the renewable energy credits.
At September 30, 2017, Southern Power's average investment coverage ratio for its generating assets, based on the ratio of investment under contract to total investment using the respective generation facilities' net book value (or expected in-service value for facilities under construction) as the investment amount, was 91% through 2021 and 90% through 2026, with an average remaining contract duration of approximately 16 years.

Gas Distribution OperationsGas
Pipeline Investments
Gas Marketing ServicesTotalAll OtherEliminationsConsolidated
(in millions)
Three Months Ended March 31, 2023
Operating revenues$1,618 $8 $246 $1,872 $12 $(9)$1,875 
Segment net income221 31 50 302 7  309 
Total assets at March 31, 202322,223 1,583 1,596 25,402 9,598 (10,778)24,222 
Three Months Ended March 31, 2022
Operating revenues$1,803 $$243 $2,054 $16 $(12)$2,058 
Segment net income214 29 66 309 10 — 319 
Total assets at December 31, 202222,040 1,577 1,616 25,233 8,943 (9,555)24,621 
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Index to Financial Statements

Environmental Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters"Item 2. Management's Discussion and Analysis of Southern Power in Item 7Financial Condition and Results of the Form 10-K for information on the development by federal and state environmental regulatory agencies of additional control strategies for emissions of air pollution from industrial sources, including electric generating facilities. Compliance with possible additional federal or state legislation or regulations related to global climate change, air quality, water quality, or other environmental and health concerns could also significantly affect Southern Power. While Southern Power's PPAs generally contain provisions that permit charging the counterparty with some of the new costs incurred as a result of changes in environmental laws and regulations, the full impact of any such legislative or regulatory changes cannot be determined at this time.
Environmental Statutes and Regulations
Water Quality
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Environmental Statutes and Regulations Water Quality" of Southern Power in Item 7 of the Form 10-K for additional information regarding the final effluent guidelines rule.
On April 25, 2017, the EPA published a notice announcing it would reconsider the effluent guidelines rule, which had been finalized in November 2015. On September 18, 2017, the EPA published a final rule establishing a stay of the compliance deadlines for certain effluent limitations and pretreatment standards under the rule.
The ultimate outcome of this matter cannot be determined at this time.
Global Climate Issues
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters Global Climate Issues" of Southern Power in Item 7 of the Form 10-K for additional information.
On March 28, 2017, the U.S. President signed an executive order directing agencies to review actions that potentially burden the development or use of domestically produced energy resources. The executive order specifically directs the EPA to review the Clean Power Plan and final greenhouse gas emission standards for new, modified, and reconstructed electric generating units and, if appropriate, take action to suspend, revise, or rescind those rules. On October 16, 2017, the EPA published a proposed rule to repeal the Clean Power Plan. The EPA has not determined whether or when it will promulgate a replacement rule.
On June 1, 2017, the U.S. President announced that the United States will withdraw from the non-binding Paris Agreement and begin renegotiation of its terms.
The ultimate outcome of these matters cannot be determined at this time.
FERC Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters" of Southern Power in Item 7 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017

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order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Acquisitions
During the nine months ended September 30, 2017, in accordance with Southern Power's overall growth strategy, one of Southern Power's wholly-owned subsidiaries acquired the project discussed below. Acquisition-related costs were expensed as incurred and were not material. See Note (I) to the Condensed Financial Statements under "Southern Power" herein and MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Southern Power in Item 7 of the Form 10-K for additional information.
Project FacilityResource
Approximate Nameplate Capacity (MW)
LocationPercentage OwnershipActual CODPPA CounterpartiesPPA Contract Period
BethelWind276Castro County, TX100% January 2017Google Energy, LLC12 years
The aggregate amounts of revenue and net income recognized by Southern Power related to the Bethel facility included in Southern Power's condensed consolidated statements of income for year-to-date 2017 were immaterial. The Bethel facility did not have operating revenues or activities prior to completion of construction and the assets being placed in service; therefore, supplemental pro forma information as though the acquisition occurred as of the beginning of 2017 and for the comparable 2016 period is not meaningful and has been omitted.
Subsequent to September 30, 2017, Southern Power purchased all of the redeemable noncontrolling interests, representing 10% of the membership interests, in Southern Turner Renewable Energy, LLC and repaid $14 million of notes payable to Turner Renewable Energy, LLC.
Construction Projects
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Acquisitions" and "Construction Projects" of Southern Power in Item 7 of the Form 10-K and FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" herein for additional information.
Construction Projects Completed and in Progress
During the nine months ended September 30, 2017, in accordance with its overall growth strategy, Southern Power completed construction of and placed in service, or continued construction of, the projects set forth in the following table. Through September 30, 2017, total costs of construction incurred for these projects were $494 million, of which $122 million remained in CWIP. Total aggregate construction costs, excluding the acquisition costs, are expected to be between $360 million and $415 million for the Mankato and Cactus Flats facilities. The ultimate outcome of these matters cannot be determined at this time.

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Operations.
Project FacilityResource
Approximate Nameplate Capacity (MW)
LocationActual/Expected CODPPA CounterpartiesPPA Contract PeriodPage
Projects Completed During the Nine Months Ended September 30, 2017
East PecosSolar120Pecos County, TXMarch 2017Austin Energy15 years
LamesaSolar102Dawson County, TXApril 2017CityCombined Management's Discussion and Analysis of Garland, Texas15 years
Projects Under Construction asFinancial Condition and Results of September 30, 2017
Cactus Flats(*)
Wind148Concho County, TXThird quarter 2018General Motors, LLC
and
General Mills Operations LLC
12 years
and
15 years
MankatoNatural Gas345Mankato, MNSecond quarter 2019Northern States Power Company20 years
(*)On July 31, 2017,
Development Projects
In December 2016,The following Management's Discussion and Analysis of Financial Condition and Results of Operations is a combined presentation; however, information contained herein relating to any individual Registrant is filed by such Registrant on its own behalf and each Registrant makes no representation as part of Southern Power's renewable development strategy, one of Southern Power's wholly-owned subsidiaries entered into a joint development agreement with Renewable Energy Systems Americas, Inc. to develop and construct approximately 3,000 MWs of wind projects. Also in December 2016, Southern Power signed agreements and made payments to purchase wind turbine equipment from Siemens Wind Power, Inc. and Vestas-American Wind Technology, Inc. to be used for construction of the facilities. All of the wind turbine equipment was delivered by April 2017, which allows the projects to qualify for 100% PTCs for 10 years following their expected commercial operation dates between 2018 and 2020. The ultimate outcome of these matters cannot be determined at this time.
Income Tax Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Income Tax Matters" of Southern Power in Item 7 of the Form 10-K and Note (G)information related to the Condensed Financial Statements herein for additional information.
During the third quarter 2017, Southern Power began a legal entity reorganization of various direct and indirect subsidiaries that own and operate solar facilities, including certain subsidiaries owned in partnership with various third parties. Southern Power's ownership interests in the various solar entities and facilities will not be affected by the reorganization. The reorganization is expected to result in estimated tax benefits totaling approximately $40 million that will be recorded in the fourth quarter 2017 related to certain changes in state apportionment rates and net operating loss carryforward utilization. The ultimate outcome of this matter cannot be determined at this time.
Other Matters
Southern Power is involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Southern Power is subject to certain claims and legal actions arising in the ordinary course of business. Southern Power's business activities are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements, such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.
The ultimate outcome of such pending or potential litigation or regulatory matters cannot be predicted at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements

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herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Southern Power's financial statements.
During 2015, Southern Power indirectly acquired a 51% membership interest in RE Roserock LLC (Roserock), the owner of the Roserock facility in Pecos County, Texas, which was under construction by Recurrent Energy, LLC and was subsequently placed in service in November 2016. Prior to placing the facility in service, certain solar panels were damaged during installation. While the facility currently is generating energy consistent with operational expectations and PPA obligations, Southern Power is pursuing remedies under its insurance policies and other contracts to repair or replace these solar panels. In connection therewith, Southern Power is withholding payments of approximately $26 million from the construction contractor, who has placed a lien on the Roserock facility for the same amount. The amounts withheld are included in other accounts payable and other current liabilities on Southern Power's consolidated balance sheets. On May 18, 2017, Roserock filed a lawsuit in the state district court in Pecos County, Texas, against X.L. America, Inc. (XL) and North American Elite Insurance Company (North American Elite) seeking recovery from an insurance policy for damages resulting from a hail storm and certain installation practices by the construction contractor, McCarthy Building Companies, Inc. (McCarthy). On May 19, 2017, Roserock filed a separate lawsuit against McCarthy in the state district court in Travis County, Texas alleging breach of contract and breach of warranty for the damages sustained at the Roserock facility, which has since been moved to the U.S. District Court for the Western District of Texas. On May 22, 2017, McCarthy filed a counter lawsuit against Roserock, Array Technologies, Inc., Canadian Solar (USA), Inc., XL, and North American Elite in the U.S. District Court for the Western District of Texas alleging, among other things, breach of contract, and requesting foreclosure of mechanic's liens against Roserock. On July 18, 2017, the U.S. District Court for the Western District of Texas consolidated the two pending lawsuits. Southern Power intends to vigorously pursue and defend these matters, the ultimate outcome of which cannot be determined at this time.
ACCOUNTING POLICIES
Application of Critical Accounting Policies and Estimates
Southern Power prepares its consolidated financial statements in accordance with GAAP. Significant accounting policies are described in Note 1 to the financial statements of Southern Power in Item 8 of the Form 10-K. In the application of these policies, certain estimates are made that may have a material impact on Southern Power's results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" of Southern Power in Item 7 of the Form 10-K for a complete discussion of Southern Power's critical accounting policies and estimates related to Revenue Recognition, Impairment of Long-Lived Assets and Intangibles, Acquisition Accounting, and ITCs.
Recently Issued Accounting Standards
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Southern Power in Item 7 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standard is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Southern Power expects most of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. However, given Southern Power's core activities of selling generation capacity and energy to high credit rated customers, Southern Power currently does not expect the new standard to have a significant impact to net income. Southern Power's ongoing evaluation of revenue streams and

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related contracts includes the evaluation of identified revenue streams tied to longer-term contractual arrangements, such as certain capacity and energy payments under PPAs that are expected to be excluded from the scope of ASC 606 and included in the scope of the current leasing guidance (ASC 840).
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Southern Power intends to use the modified retrospective method of adoption effective January 1, 2018. Southern Power has also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in Southern Power's financial statements, Southern Power will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Southern Power is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Southern Power's financial statements.
FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Overview" of Southern Power in Item 7 of the Form 10-K for additional information. Southern Power's financial condition remained stable at September 30, 2017. Southern Power intends to continue to monitor its access to short-term and long-term capital markets as well as bank credit agreements as needed to meet future capital and liquidity needs. See "Sources of Capital" herein for additional information on lines of credit.
Southern Power anticipates utilizing third-party tax equity as one of the financing sources to fund its renewable growth strategy; however, the use of third-party tax equity structures is not expected to have a material impact on future earnings. Subsequent to September 30, 2017, Southern Power secured third-party tax equity funding for the recently acquired Cactus Flats project subject to achieving commercial operation and various other customary conditions to closing. The ultimate outcome of this matter cannot be determined at this time.
Net cash provided from operating activities totaled $895 million for the first nine months of 2017 compared to $269 million for the first nine months of 2016. The increase in net cash provided from operating activities was primarily due to income tax refunds received and an increase in energy sales arising from new solar and wind facilities, partially offset by an increase in interest paid. See FUTURE EARNINGS POTENTIAL "Income Tax Matters – Bonus Depreciation" of Southern Power in Item 7 of the Form 10-K for additional information. Net cash used for investing activities totaled $1.5 billion for the first nine months of 2017 primarily due to payments for renewable acquisitions and the construction of generating facilities. Net cash used for financing activities totaled $325 million for the first nine months of 2017 primarily due to common stock dividend payments, a decrease in notes payable, and distributions to noncontrolling interests, partially offset by capital contributions from noncontrolling interests. Cash flows from financing activities may vary from period to period based on capital needs and the maturity or redemption of securities.
Significant balance sheet changes for the first nine months of 2017 include a $1.0 billion increase in property, plant,

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and equipment in-service primarily related to acquisitions and completing construction of and placing in service solar facilities, a $921 million decrease in cash and cash equivalents, and a $461 million decrease in acquisitions payable.
See FUTURE EARNINGS POTENTIAL "Acquisitions" and "Construction Projects" herein for additional information.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Southern Power in Item 7 of the Form 10-K for a description of Southern Power's capital requirements for its construction program, scheduled maturities of long-term debt, as well as the related interest, derivative obligations, leases, unrecognized tax benefits, and other purchase commitments. Approximately $864 million will be required to repay maturities of long-term debt through September 30, 2018.
Southern Power's construction program includes estimates for potential plant acquisitions, new construction and development, capital improvements, and work to be performed under LTSAs and is subject to periodic review and revision. Planned expenditures for plant acquisitions may vary materially due to market opportunities and Southern Power's ability to execute its growth strategy. Actual capital costs may vary from these estimates because of numerous factors such as: changes in business conditions; changes in the expected environmental compliance program; changes in environmental statutes and regulations; the outcome of any legal challenges to the environmental rules; changes in FERC rules and regulations; changes in load projections; changes in legislation; the cost and efficiency of construction labor, equipment, and materials; project scope and design changes; and the cost of capital. See Note (I) to the Condensed Financial Statements herein for additional information.
Sources of Capital
Southern Power plans to obtain the funds required for acquisitions, construction, development, debt maturities, and other purposes from operating cash flows, short-term debt, securities issuances, term loans, tax equity partnership contributions, and equity contributions from Southern Company. However, the amount, type, and timing of any future financings, if needed, will depend upon prevailing market conditions, regulatory approval, and other factors. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" of Southern Power in Item 7 of the Form 10-K for additional information.
As of September 30, 2017, Southern Power's current liabilities exceeded current assets by $497 million due to long-term debt maturing in the next 12 months, the use of short-term debt as a funding source, and fluctuations in cash needs, due to both seasonality and the stage of acquisitions and construction projects. Southern Power believes the need for working capital can be adequately met by utilizing the commercial paper program, the Facility (as defined below), bank term loans, the debt capital markets, and operating cash flows.
As of September 30, 2017, Southern Power had cash and cash equivalents of approximately $178 million.
Southern Power's commercial paper program is used to finance acquisition and construction costs related to electric generating facilities, for general corporate purposes, and to finance maturing debt. Commercial paper is included in notes payable on the condensed consolidated balance sheet at September 30, 2017.

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SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Details of commercial paper were as follows:
 Short-term Debt at September 30, 2017 
Short-term Debt During the Period (*)
 Amount OutstandingWeighted Average Interest Rate Average Amount Outstanding Weighted Average Interest Rate 
Maximum
Amount
Outstanding
 (in millions)  (in millions)   (in millions)
Commercial paper$120
1.5% $322
 1.5% $416
(*)Average and maximum amounts are based upon daily balances during the three-month period ended September 30, 2017.
At September 30, 2017, Southern Power had a committed credit facility (Facility) of $750 million, of which $22 million has been used for letters of credit and $728 million remains unused. In May 2017, Southern Power amended the Facility, which, among other things, extended the maturity date from 2020 to 2022 and increased Southern Power's borrowing ability under this Facility to $750 million from $600 million. Proceeds from the Facility may be used for working capital and general corporate purposes as well as liquidity support for Southern Power's commercial paper program. Subject to applicable market conditions, Southern Power expects to renew or replace the Facility, as needed, prior to expiration. In connection therewith, Southern Power may extend the maturity date and/or increase or decrease the lending commitment thereunder. See Note 6 to the financial statements of Southern Power under "Bank Credit Arrangements" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Bank Credit Arrangements" herein for additional information.
The Facility, as well as Southern Power's term loan agreement, contains a covenant that limits the ratio of debt to capitalization (as defined in the Facility) to a maximum of 65% and contains a cross-default provision that is restricted only to indebtedness of Southern Power. For purposes of this definition, debt excludes any project debt incurred by certain subsidiaries of Southern Power to the extent such debt is non-recourse to Southern Power, and capitalization excludes the capital stock or other equity attributable to such subsidiary. Southern Power is currently in compliance with all covenants in the Facility.
Southern Power also has a $120 million continuing letter of credit facility for standby letters of credit expiring in 2019. At September 30, 2017, $111 million has been used for letters of credit and $9 million remains unused.
Southern Power's subsidiaries do not borrow under the commercial paper program and are not parties to, and do not borrow under, the Facility or the continuing letter of credit facility.
Credit Rating Risk
Southern Power does not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change to BBB and/or Baa2, or below. These contracts are for physical electricity purchases and sales, fuel transportation and storage, energy price risk management, and transmission.

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SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


The maximum potential collateral requirements under these contracts at September 30, 2017 were as follows:
Credit RatingsMaximum Potential
Collateral
Requirements
 (in millions)
At BBB and/or Baa2$37
At BBB- and/or Baa3$398
At BB+ and/or Ba1(*)
$1,124
(*)Any additional credit rating downgrades at or below BB- and/or Ba3 could increase collateral requirements up to an additional $38 million.
Included in these amounts are certain agreements that could require collateral in the event that Alabama Power or Georgia Power has a credit rating change to below investment grade. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of Southern Power to access capital markets and would be likely to impact the cost at which it does so.
In addition, Southern Power has a PPA that could require collateral, but not accelerated payment, in the event of a downgrade of Southern Power's credit. The PPA requires credit assurances without stating a specific credit rating. The amount of collateral required would depend upon actual losses resulting from a credit downgrade.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including Southern Power) from stable to negative.
Financing Activities
In September 2017, Southern Power amended its $60 million aggregate principal amount floating rate bank loan to, among other things, increase the aggregate principal amount to $100 million and extend the maturity date from September 2017 to October 2018. The additional $40 million of proceeds were used to repay existing indebtedness and for other general corporate purposes.
In addition to any financings that may be necessary to meet capital requirements and contractual obligations, Southern Power plans to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.

SOUTHERN COMPANY GAS
AND SUBSIDIARY COMPANIES

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
 Successor  Predecessor
 For the Three Months Ended September 30, For the Three Months Ended September 30, For the Nine Months Ended September 30, July 1, 2016 through September 30,  January 1, 2016 through
June 30,
 2017 2016 2017 2016  2016
 (in millions)  (in millions)
Operating Revenues:          
Natural gas revenues (includes revenue
taxes of $9, $9, $75, $9, and $57 for the
periods presented, respectively)
$532
 $518
 $2,746
 $518
  $1,841
Other revenues33
 25
 95
 25
  64
Total operating revenues565
 543
 2,841
 543
  1,905
Operating Expenses:          
Cost of natural gas134
 133
 1,085
 133
  755
Cost of other sales7
 2
 20
 2
  14
Other operations and maintenance205
 216
 671
 216
  454
Depreciation and amortization125
 116
 370
 116
  206
Taxes other than income taxes26
 29
 140
 29
  99
Merger-related expenses
 35
 
 35
  56
Total operating expenses497
 531
 2,286
 531
  1,584
Operating Income68
 12
 555
 12
  321
Other Income and (Expense):          
Earnings from equity method investments32
 29
 100
 29
  2
Interest expense, net of amounts capitalized(51) (39) (145) (39)  (96)
Other income (expense), net18
 9
 26
 9
  5
Total other income and (expense)(1) (1) (19) (1)  (89)
Earnings Before Income Taxes67
 11
 536
 11
  232
Income taxes52
 7
 233
 7
  87
Net Income15
 4
 303
 4
  145
Less: Net income attributable to
noncontrolling interest

 
 
 
  14
Net Income Attributable to
Southern Company Gas
$15
 $4
 $303
 $4
  $131
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
 Successor  Predecessor
 For the Three Months Ended September 30, For the Three Months Ended September 30, For the Nine Months Ended September 30, July 1, 2016 through September 30,  January 1, 2016 through
June 30,
 2017 2016 2017 2016  2016
 (in millions)  (in millions)
Net Income$15
 $4
 $303
 $4
  $145
Other comprehensive income (loss):          
Qualifying hedges:          
Changes in fair value, net of tax of
$-, $(2), $(2), $(2), and $(23),
respectively

 (3) (3) (3)  (41)
Reclassification adjustment for
amounts included in net income,
net of tax of $-, $-, $-, $-, and $-,
respectively

 
 
 
  1
Pension and other postretirement
benefit plans:
          
Reclassification adjustment for
amounts included in net income,
net of tax of $-, $-, $(1), $-, and $4,
respectively

 
 
 
  5
Total other comprehensive income (loss)
 (3) (3) (3)  (35)
Comprehensive Income15
 1
 300
 1
  110
Less: Comprehensive income attributable to
noncontrolling interest

 
 
 
  14
Comprehensive Income Attributable to
Southern Company Gas
$15
 $1
 $300
 $1
  $96
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)
 Successor  Predecessor
 For the Nine Months Ended September 30, July 1, 2016 through September 30,  January 1, 2016 through
June 30,
 2017 2016  2016
 (in millions)  (in millions)
Operating Activities:      
Net income$303
 $4
  $145
Adjustments to reconcile net income
to net cash provided from operating activities —
      
Depreciation and amortization, total370
 116
  206
Deferred income taxes265
 (30)  8
Pension, postretirement, and other employee benefits(4) (123)  5
Stock based compensation expense25
 11
  20
Hedge settlements
 (35)  (26)
Mark-to-market adjustments(32) 17
  162
Other, net(67) (47)  (82)
Changes in certain current assets and liabilities —      
-Receivables534
 (18)  181
-Natural gas for sale, net of temporary LIFO liquidation
 (222)  273
-Prepaid income taxes(7) 1
  151
-Other current assets(42) (36)  37
-Accounts payable(169) 78
  43
-Accrued taxes(24) (11)  41
-Accrued compensation(11) (36)  (21)
-Other current liabilities8
 (11)  (30)
Net cash provided from (used for) operating activities1,149
 (342)  1,113
Investing Activities:      
Property additions(1,093) (287)  (509)
Cost of removal, net of salvage(45) (21)  (32)
Change in construction payables, net49
 9
  (7)
Investment in unconsolidated subsidiaries(128) (1,421)  (14)
Returned investment in unconsolidated subsidiaries22
 2
  3
Other investing activities3
 3
  
Net cash used for investing activities(1,192) (1,715)  (559)
Financing Activities:      
Increase (decrease) in notes payable, net(323) 472
  (896)
Proceeds —      
First mortgage bonds200
 
  250
Capital contributions from parent company79
 1,089
  
Senior notes450
 900
  350
Redemptions and repurchases —      
Medium-term notes(22) 
  
First mortgage bonds
 
  (125)
Senior notes
 (300)  
Distributions to noncontrolling interest
 
  (19)
Payment of common stock dividends(332) (63)  (128)
Other financing activities(7) (8)  10
Net cash provided from (used for) financing activities45
 2,090
  (558)
Net Change in Cash and Cash Equivalents2
 33
  (4)
Cash and Cash Equivalents at Beginning of Period19
 15
  19
Cash and Cash Equivalents at End of Period$21
 $48
  $15
Supplemental Cash Flow Information:      
Cash paid (received) during the period for —      
Interest (net of $9, $2, and $3 capitalized, respectively)$146
 $86
  $119
Income taxes, net17
 54
  (100)
Noncash transactions —
Accrued property additions at end of period
112
 50
  41
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
Assets At September 30, 2017 At December 31, 2016
  (in millions)
Current Assets:    
Cash and cash equivalents $21
 $19
Receivables —    
Energy marketing receivables 427
 623
Customer accounts receivable 221
 364
Unbilled revenues 61
 239
Other accounts and notes receivable 61
 76
Accumulated provision for uncollectible accounts (26) (27)
Materials and supplies 24
 26
Natural gas for sale 631
 631
Prepaid expenses 103
 80
Assets from risk management activities, net of collateral 103
 128
Other regulatory assets, current 96
 81
Other current assets 25
 10
Total current assets 1,747
 2,250
Property, Plant, and Equipment:    
In service 15,383
 14,508
Less: Accumulated depreciation 4,567
 4,439
Plant in service, net of depreciation 10,816
 10,069
Construction work in progress 596
 496
Total property, plant, and equipment 11,412
 10,565
Other Property and Investments:    
Goodwill 5,967
 5,967
Equity investments in unconsolidated subsidiaries 1,609
 1,541
Other intangible assets, net of amortization of $100 and $34
at September 30, 2017 and December 31, 2016, respectively
 300
 366
Miscellaneous property and investments 21
 21
Total other property and investments 7,897
 7,895
Deferred Charges and Other Assets:    
Other regulatory assets, deferred 944
 973
Other deferred charges and assets 190
 170
Total deferred charges and other assets 1,134
 1,143
Total Assets $22,190
 $21,853
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.


SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholder's Equity At September 30, 2017 At December 31, 2016
  (in millions)
Current Liabilities:    
Securities due within one year $
 $22
Notes payable 934
 1,257
Energy marketing trade payables 451
 597
Accounts payable 368
 348
Customer deposits 137
 153
Accrued taxes —    
Accrued income taxes 
 26
Other accrued taxes 70
 68
Accrued interest 66
 48
Accrued compensation 46
 58
Liabilities from risk management activities, net of collateral 28
 62
Other regulatory liabilities, current 126
 102
Accrued environmental remediation, current 54
 69
Other current liabilities 112
 108
Total current liabilities 2,392
 2,918
Long-term Debt 5,862
 5,259
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 2,214
 1,975
Employee benefit obligations 431
 441
Other cost of removal obligations 1,656
 1,616
Accrued environmental remediation, deferred 345
 357
Other regulatory liabilities, deferred 35
 51
Other deferred credits and liabilities 88
 127
Total deferred credits and other liabilities 4,769
 4,567
Total Liabilities 13,023
 12,744
Common Stockholder's Equity:    
Common stock, par value $0.01 per share —    
Authorized — 100 million shares    
Outstanding — 100 shares 
 
Paid in capital 9,185
 9,095
Accumulated deficit (41) (12)
Accumulated other comprehensive income 23
 26
Total common stockholder's equity 9,167
 9,109
Total Liabilities and Stockholder's Equity $22,190
 $21,853
The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.



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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


OVERVIEWRegulatory Matters
Southern Company Gas is an energy services holding company whose primary business isIn 2009, the distributionGeorgia PSC voted to certify construction of natural gasPlant Vogtle Units 3 and 4 with a certified capital cost of $4.418 billion. In addition, in 2009 the Georgia PSC approved inclusion of the Plant Vogtle Units 3 and 4 related CWIP accounts in rate base, and the State of Georgia enacted the Georgia Nuclear Energy Financing Act, which allows Georgia Power to recover financing costs for Plant Vogtle Units 3 and 4. Financing costs are recovered on all applicable certified costs through utilities in seven states – Illinois, Georgia, Virginia, New Jersey, Florida, Tennessee, and Maryland. Southern Company Gas and its subsidiaries are also involved in several other complementary businesses.
Southern Company Gas has four reportable segments – gas distribution operations, gas marketing services, wholesale gas services, and gas midstream operations – and one non-reportable segment – all other. For additional information on these segments, see Note (K)annual adjustments to the Condensed Financial Statements hereinNCCR tariff up to the certified capital cost of $4.418 billion. At March 31, 2023, Georgia Power had recovered approximately $2.9 billion of financing costs. Financing costs related to capital costs above $4.418 billion are being recognized through AFUDC and "BUSINESS – Southern Company Gas"are expected to be recovered through retail rates over the life of Plant Vogtle Units 3 and 4; however, Georgia Power is not recording AFUDC related to any capital costs in Item 1excess of the Form 10-K.total deemed reasonable by the Georgia PSC (currently $7.3 billion) and not requested for rate recovery. In December 2022, the Georgia PSC approved Georgia Power's filing to increase the NCCR tariff by $36 million annually, effective January 1, 2023.
Many factors affectGeorgia Power is required to file semi-annual VCM reports with the opportunities, challenges,Georgia PSC by February 28 and risksAugust 31 of each year. In 2013, in connection with the eighth VCM report, the Georgia PSC approved a stipulation between Georgia Power and the staff of the Georgia PSC to waive the requirement to amend the Plant Vogtle Units 3 and 4 certificate in accordance with the 2009 certification order until the completion of Plant Vogtle Unit 3, or earlier if deemed appropriate by the Georgia PSC and Georgia Power.
In 2016, the Georgia PSC voted to approve a settlement agreement (Vogtle Cost Settlement Agreement) resolving certain prudency matters in connection with the fifteenth VCM report. In December 2017, the Georgia PSC voted to approve (and issued its related order on January 11, 2018) Georgia Power's seventeenth VCM report and modified the Vogtle Cost Settlement Agreement. The Vogtle Cost Settlement Agreement, as modified by the January 11, 2018 order, resolved the following regulatory matters related to Plant Vogtle Units 3 and 4: (i) none of the $3.3 billion of costs incurred through December 31, 2015 and reflected in the fourteenth VCM report should be disallowed from rate base on the basis of imprudence; (ii) the Contractor Settlement Agreement was reasonable and prudent and none of the $0.3 billion paid pursuant to the Contractor Settlement Agreement should be disallowed from rate base on the basis of imprudence; (iii) (a) capital costs incurred up to $5.68 billion would be presumed to be reasonable and prudent with the burden of proof on any party challenging such costs, (b) Georgia Power would have the burden to show that any capital costs above $5.68 billion were prudent, and (c) a revised capital cost forecast of $7.3 billion (after reflecting the impact of payments received under the Guarantee Settlement Agreement and related customer refunds) was found reasonable; (iv) construction of Plant Vogtle Units 3 and 4 should be completed, with Southern Company Gas' business. These factorsNuclear serving as project manager and Bechtel as primary contractor; (v) approved and deemed reasonable Georgia Power's revised schedule placing Plant Vogtle Units 3 and 4 in service in November 2021 and November 2022, respectively; (vi) confirmed that the revised cost forecast does not represent a cost cap and that a prudence proceeding on cost recovery will occur following Unit 4 fuel load, consistent with applicable Georgia law; (vii) reduced the ROE used to calculate the NCCR tariff (a) from 10.95% (the ROE rate setting point authorized by the Georgia PSC at that time) to 10.00% effective January 1, 2016, (b) from 10.00% to 8.30%, effective January 1, 2020, and (c) from 8.30% to 5.30%, effective January 1, 2021 (provided that the ROE in no case will be less than Georgia Power's average cost of long-term debt); (viii) reduced the ROE used for AFUDC equity for Plant Vogtle Units 3 and 4 from 10.00% to Georgia Power's average cost of long-term debt, effective January 1, 2018; and (ix) agreed that effective the first month after Unit 3 reaches commercial operation, retail base rates would be adjusted to include the abilitycosts related to maintain constructive regulatory environments, to maintainUnit 3 and grow natural gas sales, and to effectively manage and secure timely recovery of costs. Southern Company Gas has various regulatory mechanisms that operate to address cost recovery. Effectively operating pursuant to these regulatory mechanisms and appropriately balancing required costs and capital expenditures with customer prices will continue to challenge Southern Company Gas for the foreseeable future.
Merger, Acquisition, and Disposition Activities
On July 1, 2016, Southern Company Gas completed the Merger, which was accounted for by Southern Company using the acquisition method of accounting whereby the assets acquired and liabilities assumed were recognized at fair value as of the acquisition date. Pushdown accounting was applied to create a new cost basis for Southern Company Gas assets, liabilities, and equity as of the acquisition date. Accordingly, the successor financial statements reflect a new basis of accounting and successor and predecessor period financial results (separated by a heavy black line) are presented, but are not comparable. As a result of the application of acquisition accounting, certain discussions herein include disclosure of the predecessor and successor periods. See Note (I) to the Condensed Financial Statements herein for additional information relating to the Merger.
In September 2016, Southern Company Gas paid approximately $1.4 billion to acquire a 50% equity interest in SNG. On March 31, 2017, Southern Company Gas made an additional $50 million contribution to maintain its 50% equity interest in SNG. Southern Company Gas recorded equity investment income of $28 million and $86 million from this investmentcommon facilities deemed prudent in the successor third quarter and year-to-date 2017, respectively, and $27 million in September 2016. SeeVogtle Cost Settlement Agreement (see Note (J) to the Condensed Financial Statements herein and Notes 4 and 112 to the financial statements of Southern Company Gas under "Equity Method Investments"Georgia PowerSNG"Plant Vogtle Unit 3 and "Investment in SNG," respectively,Common Facilities Rate Proceeding" in Item 8 of the Form 10-K for additional information.information). The January 11, 2018 order also stated that if Plant Vogtle Units 3 and 4 are not commercially operational by June 1, 2021 and June 1, 2022, respectively, the ROE used to calculate the NCCR tariff will be further reduced by 10 basis points each month
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(but not lower than Georgia Power's average cost of long-term debt) until the respective Unit is commercially operational. The ROE reductions negatively impacted earnings by approximately $300 million in 2022 and are estimated to have negative earnings impacts of approximately $270 million in 2023 and $60 million in 2024. In its January 11, 2018 order, the Georgia PSC also stated if other conditions change and assumptions upon which Georgia Power's seventeenth VCM report are based do not materialize, the Georgia PSC reserved the right to reconsider the decision to continue construction.
In October 2016, Southern Company Gas completedthe August 2021 order approving the twenty-fourth VCM report, the Georgia PSC approved a stipulation addressing the following matters: (i) beginning with its purchase of Piedmont's 15% interest in SouthStar, which eliminated the noncontrolling interest associated with SouthStar. See Note 4twenty-fifth VCM report, Georgia Power will continue to report to the financial statements of Southern Company Gas under "Variable Interest Entities"Georgia PSC all costs incurred during the period for review and will request for approval costs up to the $7.3 billion determined to be reasonable in Item 8the Georgia PSC's seventeenth VCM order and (ii) Georgia Power will not seek rate recovery of the Form 10-K$0.7 billion increase to the base capital cost forecast included in the nineteenth VCM report and charged to income by Georgia Power in the second quarter 2018. In addition, the stipulation confirms Georgia Power may request verification and approval of costs above $7.3 billion for additional information.inclusion in rate base at a later time, but no earlier than the prudence review contemplated by the seventeenth VCM order described previously.
On October 15, 2017, Southern Company Gas subsidiary, Pivotal Utility Holdings, entered into agreements for the saleThe Georgia PSC has approved 25 VCM reports covering periods through June 30, 2021. These reports reflect total construction capital costs incurred of the assets of two of its natural gas distribution utilities, Elizabethtown Gas and Elkton Gas, to South Jersey Industries, Inc. for a total cash purchase price$7.9 billion (net of $1.7 billion. As of September 30, 2017, the net book value of the assets to be disposed of in the sale was approximately $1.5 billion, which includes approximately $0.5 billion of goodwill. The goodwill is not deductible for tax purposes and as a result, a deferred tax liability has not yet been provided for goodwill. Through the completion of the sale, Southern Company Gas intends to invest approximately $0.1 billion in capital expenditures which are required for ordinary business operations. The completion of each sale is subject to the satisfaction or waiver of certain closing conditions, including, among others, (i) the expiration or termination of the waiting periodpayments received under the Hart-Scott-Rodino Antitrust Improvements Act; (ii)Guarantee Settlement Agreement and approximately $188 million in related customer refunds), of which the receiptGeorgia PSC has verified and approved $7.3 billion as described above. The Georgia PSC also has reviewed two additional VCM reports, which reflected $1.1 billion of required regulatory approvals, includingadditional construction capital costs incurred through June 30, 2022. Georgia Power filed its twenty-eighth VCM report with the FERC,Georgia PSC on February 16, 2023, which reflected the Federal Communications Commission, the New Jersey BPU,revised capital cost forecast described above and with respect to the sale$461 million of Elkton Gas, the Maryland PSC; and (iii) other customary closing conditions. The sales are expected to be completed by the end of the third quarter 2018.construction capital costs incurred from July 1, 2022 through December 31, 2022.
The ultimate outcome of these matters cannot be determined at this time.

Mississippi Power
Performance Evaluation Plan
On March 15, 2023, Mississippi Power submitted its annual retail PEP filing for 2023 to the Mississippi PSC indicating no change in retail rates. The ultimate outcome of this matter cannot be determined at this time.
Ad Valorem Tax Adjustment
On March 31, 2023, Mississippi Power submitted its annual ad valorem tax adjustment filing for 2023, which requested a $7 million annual decrease in revenues. The ultimate outcome of this matter cannot be determined at this time.
Environmental Compliance Overview Plan
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual ECO Plan filing, resulting in a $3 million annual increase in revenues effective with the first billing cycle of May 2023.
System Restoration Rider
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual SRR filing, which indicated no change in retail rates. Mississippi Power's minimum annual SRR accrual was increased from $8 million to $12 million.
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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS(UNAUDITED)


Operating Metrics
Southern Company Gas continues
Infrastructure Replacement Programs and Capital Projects
Capital expenditures incurred under specific infrastructure replacement programs and capital projects during the first three months of 2023 were as follows:
UtilityProgram
Three Months
Ended
March 31, 2023
(in millions)
Nicor GasInvesting in Illinois$62 
Virginia Natural GasSAVE20 
Atlanta Gas LightSystem Reinforcement Rider32 
Chattanooga GasPipeline Replacement Program
Total$115 
(C) CONTINGENCIES
See Note 3 to focus on several operating metrics, including Heating Degree Days, customer count, and volumes of natural gas sold. For additional information on these indicators, see MANAGEMENT'S DISCUSSION AND ANALYSIS – RESULTS OF OPERATIONS – "Operating Metrics" of Southern Company Gasthe financial statements in Item 78 of the Form 10-K.10-K for information relating to various lawsuits and other contingencies.
General Litigation Matters
The Registrants are involved in various matters being litigated and regulatory matters. The ultimate outcome of such pending or potential litigation or regulatory matters against each Registrant and any subsidiaries cannot be determined at this time; however, for current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on such Registrant's financial statements.
The Registrants believe the pending legal challenges discussed below have no merit; however, the ultimate outcome of these matters cannot be determined at this time.
Alabama Power
In September 2022, Mobile Baykeeper filed a citizen suit in the U.S. District Court for the Southern District of Alabama alleging that Alabama Power's plan to close the Plant Barry ash pond utilizing a closure-in-place methodology violates the Resource Conservation and Recovery Act (RCRA) and regulations governing CCR. Among other relief requested, Mobile Baykeeper seeks a declaratory judgment that the RCRA and regulations governing CCR are being violated, preliminary and injunctive relief to prevent implementation of Alabama Power's closure plan and the development of a closure plan that satisfies regulations governing CCR requirements. On December 19, 2022, Alabama Power filed a motion to dismiss the case. On January 31, 2023, the EPA issued a Notice of Potential Violations associated with Alabama Power's plan to close the Plant Barry ash pond. Alabama Power submitted responses on March 20, 2023, March 24, 2023, and April 3, 2023 affirming its position that it is in compliance with CCR requirements. The ultimate outcome of these matters cannot be determined at this time but could have an impact on Alabama Power's ARO estimates. See Note 6 to the financial statements in Item 8 of the Form 10-K for a discussion of Alabama Power's ARO liabilities.
Georgia Power
Municipal Franchise Fees
In 2011, plaintiffs filed a putative class action against Georgia Power in the Superior Court of Fulton County, Georgia alleging that Georgia Power's collection in rates of amounts for municipal franchise fees (which fees are paid to municipalities) exceeded the amounts allowed in orders of the Georgia PSC and alleging certain state law
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claims. This case has been ruled upon and appealed numerous times over the last several years. In 2019, the Georgia PSC issued an order that found Georgia Power has appropriately implemented the municipal franchise fee schedule. In March 2021, the Superior Court of Fulton County granted class certification and Georgia Power's motion for summary judgment and the plaintiffs filed a notice of appeal. In April 2021, Georgia Power filed a notice of cross appeal on the issue of class certification. In December 2021, the Georgia Court of Appeals affirmed the Superior Court's ruling that granted summary judgment to Georgia Power and dismissed Georgia Power's cross appeal on the issue of class certification as moot. Also in December 2021, the plaintiffs filed a petition for writ of certiorari to the Georgia Supreme Court, which was denied on January 27, 2023. On February 6, 2023, the plaintiffs filed a motion for reconsideration with the Georgia Supreme Court, which was denied on February 16, 2023. This matter is now concluded.
Plant Scherer
In July 2020, a group of individual plaintiffs filed a complaint, which was amended in December 2022, in the Superior Court of Fulton County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer has impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs seek an unspecified amount of monetary damages including punitive damages, a medical monitoring fund, and injunctive relief. Georgia Power has filed multiple motions to dismiss the complaint. In December 2022, the Superior Court of Fulton County, Georgia granted Georgia Power's motion to transfer the case to the Superior Court of Monroe County, Georgia.
In October 2021 and February 2022, a total of seven additional complaints were filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that releases from Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs sought an unspecified amount of monetary damages including punitive damages. In November 2021 and March 2022, Georgia Power removed these cases to the U.S. District Court for the Middle District of Georgia. In November 2022, the plaintiffs voluntarily dismissed their complaints without prejudice. Georgia Power anticipates that these plaintiffs will refile their complaints.
On January 9, 2023, an additional complaint was filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries. The plaintiff sought an unspecified amount of monetary damages, including punitive damages. On January 19, 2023, Georgia Power filed a notice to remove the case to the U.S. District Court for the Middle District of Georgia. On February 21, 2023, the plaintiff voluntarily dismissed the complaint without prejudice. Georgia Power anticipates that this plaintiff will refile the complaint.
The amount of any possible losses from these matters cannot be estimated at this time.
Mississippi Power
In 2018, Ray C. Turnage and 10 other individual plaintiffs filed a putative class action complaint against Mississippi Power and the three then-serving members of the Mississippi PSC in the U.S. District Court for the Southern District of Mississippi, which was amended in March 2019 to include four additional plaintiffs. Mississippi Power received Mississippi PSC approval in 2013 to charge a mirror CWIP rate premised upon including in its rate base pre-construction and construction costs for the Kemper IGCC prior to placing the Kemper IGCC into service. The Mississippi Supreme Court reversed that approval and ordered Mississippi Power to refund the amounts paid by customers under the previously-approved mirror CWIP rate. The plaintiffs allege that the initial approval process, and the amount approved, were improper and make claims for gross negligence, reckless conduct, and intentional wrongdoing. They also allege that Mississippi Power underpaid customers by up to $23.5 million in the refund process by applying an incorrect interest rate. The plaintiffs seek to recover, on behalf of themselves and their putative class, actual damages, punitive damages, pre-judgment interest, post-judgment interest, attorney's fees, and costs. The district court dismissed the amended complaint; however, in March 2020, the plaintiffs filed a motion seeking to name the new members of the Mississippi PSC, the Mississippi Development Authority, and Southern Company Gas measures weatheras additional defendants and add a cause of action against all defendants based on a dormant commerce
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clause theory under the U.S. Constitution. In July 2020, the plaintiffs filed a motion for leave to file a third amended complaint, which included the same federal claims as the proposed second amended complaint, as well as several additional state law claims based on the allegation that Mississippi Power failed to disclose the annual percentage rate of interest applicable to refunds. In November 2020, the district court denied each of the plaintiffs' pending motions and entered final judgment in favor of Mississippi Power. In January 2021, the district court denied further motions by the plaintiffs to vacate the judgment and to file a revised second amended complaint. In February 2021, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. In March 2022, the U.S. Court of Appeals for the Fifth Circuit issued an opinion affirming the dismissal of the claims against the Mississippi PSC defendants but reversing the dismissal of the claims against Mississippi Power. In May 2022, the U.S. Court of Appeals for the Fifth Circuit denied a petition by Mississippi Power for a rehearing en banc and remanded the case to the U.S. District Court for the Southern District of Mississippi for further proceedings. In June 2022, Mississippi Power filed with the trial court a motion to dismiss the complaint with prejudice, which was granted on March 15, 2023. On March 28, 2023, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. An adverse outcome in this proceeding could have a material impact on Mississippi Power's financial statements.
Environmental Remediation
The Southern Company system must comply with environmental laws and regulations governing the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the effect on its business using Heating Degree Days. Generally, increased Heating Degree Days result in higher demand for natural gas on Southern Company Gas' distribution system. With the exception of Southern Company Gas' utilities in Illinois and Florida, Southern Company Gas has variousGeorgia have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental remediation costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.
Georgia Power's environmental remediation liability was $15 million at both March 31, 2023 and December 31, 2022. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such as weather normalization mechanisms, which limit its exposure to weather changes within typical ranges in each of its utilities' respective service territory. However, the utility customers in Illinois and the gas marketing services customers primarily in Georgia and Illinois can be impacted by warmer- or colder-than-normal weather. Southern Company Gas utilizes weather hedges at gas distribution operations and gas marketing services to reduce negative earnings impact in the event of warmer-than-normal weather, while retaining most of the earnings upside.
The number of customers at gas distribution operations and energy customers at gas marketing services can be impacted by natural gas prices, economic conditions, and competition from alternative fuels. Gas marketing services' customers are primarily located in Georgia and Illinois.sites is expected.
Southern Company Gas' natural gas volume metrics for gas distribution operationsenvironmental remediation liability was $243 million and gas marketing services illustrate$256 million at March 31, 2023 and December 31, 2022, respectively, based on the effects of weather and customer demand for natural gas. Wholesale gas services' physical sales volumes represent the daily average natural gas volumes sold to its customers.
Seasonality of Results
Heating Season is the period from November through March when natural gas usage and operating revenues are generally higher, as more customers are connected to the gas distribution systems and natural gas usage is higher in periods of colder weather. Occasionally in the summer, wholesale gas services' operating revenues are impacted due to peak usage by power generators in response to summer energy demands. Southern Company Gas' base operating expenses, excludingestimated cost of naturalenvironmental investigation and remediation associated with known former manufactured gas bad debt expense, and certain incentive compensation costs, are incurred relatively evenly throughout the year. Seasonality also affects the comparison of certain balance sheet items across quarters, including receivables, unbilled revenues, natural gas for sale, and notes payable. However, these items are comparable when reviewing Southern Company Gas' annual results. Operating results for the interim periods presented are not necessarily indicative of annual results and can vary significantly from quarter to quarter.
RESULTS OF OPERATIONS
Net Income
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions)(% change)
$11N/M
N/M - Not meaningful
Net income attributable to Southern Company Gas was $15 million for the third quarter 2017 compared to $4 million for the corresponding period in 2016. This increase was primarily due to $11 million of additional income from infrastructure replacement programs and base rate increases, net of associated depreciation, and a $7 million gain from the settlement of contractor litigation claims, partially offset by $12 million lower net income at wholesale gas services. Also contributing to the increase was $24 million in Merger-related expenses in the third quarter 2016, partially offset by $23 million of additional deferred income tax expense in the third quarter 2017.

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  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Net Income Attributable to
Southern Company Gas
 $303
 $4
  $131
Net income attributable to Southern Company Gas for the successor year-to-date 2017 included $28 million of net income from wholesale gas services and $38 million in earnings from the SNG investment, net of related interest expense. Also included in net income for this period was $29 million generated from the continued investment in infrastructure replacement programs and base rate increases, primarily at Atlanta Gas Light effective March 1, 2017, less the associated increases in depreciation. For additional information, see FUTURE EARNINGS POTENTIAL– "Regulatory Matters – Base Rate Cases" herein. These increases were partially offset by $23 million of additional deferred income tax expense.
Net income attributable to Southern Company Gas for the successor period of July 1, 2016 through September 30, 2016 and the predecessor period of January 1, 2016 through June 30, 2016 included $11 million and $42 million, respectively, in net losses from wholesale gas services. The successor period of July 1, 2016 through September 30, 2016 also included $16 million in earnings from the SNG investment, net of related interest expense. Also included in net income for these periods were $24 million and $41 million, respectively, of Merger-related expenses and $14 million of net income attributable to noncontrolling interest in the predecessor period of January 1, 2016 through June 30, 2016. As a result of purchasing the remaining interest in SouthStar in October 2016, all net income was attributable to Southern Company Gas in the successor periods.
Natural Gas Revenues
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$14 2.7
In the third quarter 2017, natural gas revenues were $532 million compared to $518 million for the corresponding period in 2016.
Details of the changes in natural gas revenues were as follows:
  Third Quarter 2017
  (in millions) (% change)
Natural gas – prior year $518
  
Estimated change resulting from –    
Infrastructure replacement programs and base rate increases 25
 4.8 %
Gas costs and other cost recovery 1
 0.2
Mark-to-market adjustments at gas marketing services 3
 0.6
Wholesale gas services (16) (3.1)
Other 1
 0.2
Natural gas – current year $532
 2.7 %
plant operating sites.
The increase in natural gas revenue primarily relates to gas distribution operationsultimate outcome of these matters cannot be determined at this time; however, as a result of continued investment in infrastructure replacement programsthe regulatory treatment for environmental remediation expenses described above, the final disposition of these matters is not expected to have a material impact on the financial statements of the applicable Registrants.
Other Matters
Traditional Electric Operating Companies
In April 2019, Bellsouth Telecommunications d/b/a AT&T Alabama (AT&T) filed a complaint against Alabama Power with the FCC alleging that the pole rental rate AT&T is required to pay pursuant to the parties' joint use agreement is unjust and increases in baseunreasonable under federal law. The complaint sought a new rate revenues, primarily at Atlanta Gas Light effective March 1, 2017, as well as the positive impact from the amortization of assets established in the application of acquisition accounting at gas marketing services. These increases were partially offset by mark-to-

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market losses from derivative instruments at wholesale gas services and gas marketing services due to changes in natural gas prices and a decrease in commercial activity at wholesale gas services. For information on commercial activity at wholesale gas services, see "Segment Information – Wholesale Gas Services – Change in Commercial Activity" herein.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Natural gas revenues $2,746
 $518
  $1,841
For the successor year-to-date 2017, natural gas revenues included recovery of $1.1 billion in cost of natural gas and $95approximately $87 million in net revenues from wholesale gas services, netrefunds of $14 million of amortization associated with assets established in the application of acquisition accounting. Also included in natural gas revenues were $69 million in additional revenues generated from gas distribution operations as a result of continued investment in infrastructure replacement programs and increases in base rate revenues, primarily at Atlanta Gas Light effective March 1, 2017, partially offset by a $16 million decrease attributable to warmer-than-normal weather, net of hedging.
For the successor period of July 1, 2016 through September 30, 2016 and the predecessor period of January 1, 2016 through June 30, 2016, natural gas revenues included recovery of $133 million and $755 million, respectively, in cost of natural gas, as well as $8 million and $32 million, respectively, in net losses from wholesale gas services. Also included in natural gas revenuesalleged overpayments for the predecessor periodpreceding six years. In August 2019, the FCC stayed the case in favor of January 1, 2016 through June 30, 2016 was a $7 million decrease attributable to warmer-than-normal weather, netarbitration, which AT&T has not pursued. The ultimate outcome of hedging.
See "Segment Information" herein for additional information on wholesale gas services' revenues and losses.
Natural gas distribution rates include provisions to adjust billings for fluctuations in natural gas costs. Therefore, recoverable natural gas revenues generally equal the cost of natural gas and do not affect net income from gas distribution operations. See "Cost of Natural Gas" herein for additional information. Revenue impacts from weather and customer growth are described further below.
During Heating Season natural gas usage and operating revenues are generally higher. Weather typically does notthis matter cannot be determined at this time, but an adverse outcome could have a significant net incomematerial impact during the non-Heating Season. The following table presents the Heating Degree Days information for Illinois and Georgia, the primary locations where Southern Company Gas' operations are impacted by weather.
  Year-to-Date 2017
vs.
2016
 2017
vs.
normal
  
Normal(a)
 2017 2016 (warmer) (warmer)
Illinois(b)
 3,817
 3,146
 3,353
 (6.2)% (17.6)%
Georgia 1,631
 1,008
 1,449
 (30.4)% (38.2)%
(a)Normal represents the 10-year average from January 1, 2007 through September 30, 2016 for Illinois at Chicago Midway International Airport and for Georgia at Atlanta Hartsfield-Jackson International Airport, based on information obtained from the National Oceanic and Atmospheric Administration, National Climatic Data Center.
(b)The 10-year average Heating Degree Days established by the Illinois Commission in Nicor Gas' 2009 rate case is 3,580 for the first nine months from 1998 through 2007.
For the third quarters 2017 and 2016, the weather-related pre-tax income impact was immaterial.
Southern Company Gas hedged its exposure to warmer-than-normal weather at Nicor Gas in Illinois; therefore, the weather-related negative pre-tax income impact on gas distribution operations was limited to $6 million ($3 million after tax) and $7 million ($5 million after tax) for year-to-date 2017 and 2016, respectively. Southern Company Gas also hedged its exposure at gas marketing services to warmer-than-normal weather in Georgia and Illinois;

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therefore, the weather-related negative pre-tax income impact on gas marketing services was limited to $10 million ($6 million after tax) for year-to-date 2017 and there was no impact for year-to-date 2016.
The following table provides the number of customers served by Southern Company Gas at September 30, 2017 and 2016:
 September 30,  
 2017 2016 2017 vs. 2016
 (in thousands, except market share %) (% change)
Gas distribution operations4,555
 4,522
 0.7 %
Gas marketing services     
Energy customers(*)
756
 626
 20.8 %
Market share of energy customers in Georgia28.8% 29.4%  
Service contracts1,183
 1,189
 (0.5)%
(*)Includes approximately 140,000 customers as of September 30, 2017 that were contracted to serve beginning April 1, 2017.
Southern Company Gas anticipates overall customer growth trends at gas distribution operations to continue as it expects continued improvement in the new housing market and low natural gas prices.
Gas marketing services' market share in Georgia decreased at September 30, 2017 compared to the corresponding period in 2016 as a result of a highly competitive marketing environment, which Southern Company Gas expects to continue for the foreseeable future. Southern Company Gas will continue efforts at gas marketing services to enter into targeted markets and expand its energy customers and service contracts.
Cost of Natural Gas
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$1 0.8
In the third quarter 2017, cost of natural gas was $134 million compared to $133 million for the corresponding period in 2016. This increase reflected 7% higher natural gas prices during the third quarter 2017 compared to the corresponding period in 2016, partially offset by lower demand for natural gas.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Cost of natural gas $1,085
 $133
  $755
Cost of natural gas primarily reflected an increase of 38% in natural gas prices during the year-to-date 2017 compared to the corresponding period in 2016, partially offset by lower demand for natural gas driven by warmer-than-normal weather.
Natural gas distribution rates include provisions to adjust billings for fluctuations in natural gas costs. Therefore, recoverable natural gas revenues generally equal the cost of natural gas and do not affect net income from gas distribution operations. Cost of natural gas at gas distribution operations represented approximately 79% of total cost of natural gas for year-to-date 2017 and will be recovered in this manner. For additional information, see MANAGEMENT'S DISCUSSION AND ANALYSIS – RESULTS OF OPERATIONS – "Cost of Natural Gas" of Southern Company Gas in Item 7 of the Form 10-K and "Natural Gas Revenues" herein.

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The following table details the volumes of natural gas sold during all periods presented.
 Third Quarter 2017
vs.
2016
 Year-to-Date 2017
vs.
2016
 2017 2016 % Change 2017 2016 % Change
Gas distribution operations 
(mmBtu in millions)
           
Firm73
 71
 2.8 % 438
 467
 (6.2)%
Interruptible22
 22
  % 71
 71
  %
Total95
 93
 2.2 % 509
 538
 (5.4)%
Gas marketing services 
(mmBtu in millions)
           
Firm:           
Georgia3
 3
  % 11
 25
 (56.0)%
Illinois1
 1
  % 4
 8
 (50.0)%
Other emerging markets2
 2
  % 7
 9
 (22.2)%
Interruptible:           
Large commercial and industrial3
 3
  % 8
 10
 (20.0)%
Total9
 9
  % 30
 52
 (42.3)%
Wholesale gas services
(mmBtu in millions/day)
           
Daily physical sales6.3
 7.6
 (17.1)% 6.4
 7.6
 (15.8)%
Other Operations and Maintenance Expenses
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$(11) (5.1)
In the third quarter 2017, other operations and maintenance expenses were $205 million compared to $216 million for the corresponding period in 2016. The decrease was primarily related to $8 million of expenses associated with certain benefit arrangements recorded in 2016, $2 million lower marketing expenses at gas marketing services, and a $3 million decrease in other employee benefit and incentive costs.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Other operations and maintenance $671
 $216
  $454
Other operations and maintenance expenses for the successor year-to-date 2017 reflected increased compensation expenses due to timing, partially offset by low bad debt expense. For all periods presented, other operations and maintenance expenses primarily includes professional services, including pipeline compliance and maintenance and legal services, as well as compensation and benefit costs.

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Depreciation and Amortization
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$9 7.8
In the third quarter 2017, depreciation and amortization was $125 million compared to $116 million for the corresponding period in 2016. The increase was primarily due to $7 million in additional depreciation at gas distribution operations associated with additional plant in service primarily related to continued investment in infrastructure replacement programs.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Depreciation and amortization $370
 $116
  $206
Depreciation and amortization for the successor year-to-date 2017 included $29 million of additional amortization of intangible assets established in the application of acquisition accounting primarily at gas marketing services, $21 million in additional depreciation at gas distribution operations due to additional assets placed in service primarily related to continued investment in infrastructure replacement programs, and $7 million from the acceleration of depreciation relating to certain assets.
Taxes Other Than Income Taxes
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$(3) (10.3)
In the third quarter 2017, taxes other than income taxes were $26 million compared to $29 million for the corresponding period in 2016. The decrease primarily reflects establishing a regulatory asset related to Nicor Gas' invested capital tax. For additional information, see FUTURE EARNINGS POTENTIAL– "Regulatory Matters – Riders" herein.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Taxes other than income taxes $140
 $29
  $99
Taxes other than income taxes in the successor periods reflected increased revenue-based taxes due to higher revenues at gas distribution operations during the successor periods.

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Earnings from Equity Method Investments
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$3 10.3
In the third quarter 2017, earnings from equity method investments were $32 million compared to $29 million for the corresponding period in 2016. The increase was primarily due to higher earnings from SNG, PennEast Pipeline, and Horizon Pipeline.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Earnings from equity method investments $100
 $29
  $2
Earnings from equity method investments in the successor year-to-date 2017 consisted of $86 million in earnings from SNG and $14 million in earnings from all other investments.
See Notes 4 and 11 to the financial statements of Southern Company and Alabama Power. Georgia Power and Mississippi Power have joint use agreements with other AT&T affiliates.
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(UNAUDITED)
Mississippi Power
In August 2022, the Mississippi Department of Revenue (Mississippi DOR) completed an audit of sales and use taxes paid by Mississippi Power from 2016 to 2019 and entered a final assessment, indicating a total amount due of $28 million, including associated penalties and interest. Additional interest of approximately $1 million was estimated through March 31, 2023. Mississippi Power does not agree with the audit findings and, in October 2022, filed an administrative appeal with the Mississippi DOR. See Note 3 to the financial statements in Item 8 of the Form 10-K under "Other Matters – Mississippi Power – Department of Revenue Audit" for information regarding a Mississippi PSC accounting order related to the tax audit proceeding. The ultimate outcome of this matter cannot be determined at this time.
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(UNAUDITED)
(D) REVENUE FROM CONTRACTS WITH CUSTOMERS AND LEASE INCOME
Revenue from Contracts with Customers
The Registrants generate revenues from a variety of sources, some of which are not accounted for as revenue from contracts with customers, such as leases, derivatives, and certain cost recovery mechanisms. See Note 1 to the financial statements under "Revenues" in Item 8 of the Form 10-K for additional information on the revenue policies of the Registrants. See "Lease Income" herein and Note (J) for additional information on revenue accounted for under lease and derivative accounting guidance, respectively.
The following table disaggregates revenue from contracts with customers for the three months ended March 31, 2023 and 2022:
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2023
Operating revenues
Retail electric revenues
Residential$1,525 $659 $801 $65 $ $ 
Commercial1,251 430 753 68   
Industrial789 398 313 78   
Other27 3 22 2   
Total retail electric revenues3,592 1,490 1,889 213   
Natural gas distribution revenues
Residential896     896 
Commercial232     232 
Transportation319     319 
Industrial23     23 
Other117     117 
Total natural gas distribution revenues1,587     1,587 
Wholesale electric revenues
PPA energy revenues284 72 12 4 202  
PPA capacity revenues190 60 11 32 89  
Non-PPA revenues36 20 3 107 103  
Total wholesale electric revenues510 152 26 143 394  
Other natural gas revenues
Gas marketing services231     231 
Other natural gas revenues11     11 
Total natural gas revenues242     242 
Other revenues310 54 132 11 11  
Total revenue from contracts with customers6,241 1,696 2,047 367 405 1,829 
Other revenue sources(*)
239 (49)129 23 103 46 
Total operating revenues$6,480 $1,647 $2,176 $390 $508 $1,875 
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Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2022
Operating revenues
Retail electric revenues
Residential$1,525 $634 $821 $70 $— $— 
Commercial1,178 375 738 65 — — 
Industrial727 323 334 70 — — 
Other26 20 — — 
Total retail electric revenues3,456 1,336 1,913 207 — — 
Natural gas distribution revenues
Residential1,016 — — — — 1,016 
Commercial270 — — — — 270 
Transportation337 — — — — 337 
Industrial32 — — — — 32 
Other129 — — — — 129 
Total natural gas distribution revenues1,784 — — — — 1,784 
Wholesale electric revenues
PPA energy revenues342 59 32 251 — 
PPA capacity revenues134 39 12 81 — 
Non-PPA revenues58 64 102 73 — 
Total wholesale electric revenues534 162 53 108 405 — 
Other natural gas revenues
Gas marketing services243 — — — — 243 
Other natural gas revenues16 — — — — 16 
Total natural gas revenues259 — — — — 259 
Other revenues225 48 95 — 
Total revenue from contracts with customers6,258 1,546 2,061 324 413 2,043 
Other revenue sources(*)
390 103 147 11 126 15 
Total operating revenues$6,648 $1,649 $2,208 $335 $539 $2,058 
(*)Other revenue sources relate to revenues from customers accounted for as derivatives and leases, alternative revenue programs at Southern Company Gas, and cost recovery mechanisms and revenues that meet other scope exceptions for revenues from contracts with customers at the traditional electric operating companies.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Contract Balances
The following table reflects the closing balances of receivables, contract assets, and contract liabilities related to revenues from contracts with customers at March 31, 2023 and December 31, 2022:
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Accounts Receivable
At March 31, 2023$2,433 $622 $672 $79 $119 $853 
At December 31, 20223,123 696 922 92 237 1,107 
Contract Assets
At March 31, 2023$160 $$74 $— $— $19 
At December 31, 2022156 89 — — — 
Contract Liabilities
At March 31, 2023$61 $$14 $$$— 
At December 31, 202245 — — 
Contract assets for Georgia Power primarily relate to retail customer fixed bill programs, where the payment is contingent upon Georgia Power's continued performance and the customer's continued participation in the program over a one-year contract term, and unregulated service agreements, where payment is contingent on project completion. Contract liabilities for Georgia Power primarily relate to cash collections recognized in advance of revenue for unregulated service agreements. At March 31, 2023, Southern Company Gas' contract assets relate to work performed on an energy efficiency enhancement and upgrade contract with the U.S. General Services Administration. Southern Company Gas receives cash advances from a third-party financial institution to fund work performed, of which approximately $30 million had been received at March 31, 2023. These advances have been accounted for as long-term debt on the balance sheets. See Note 1 to the financial statements under "Equity"Affiliate Transactions" in Item 8 of the Form 10-K for additional information regarding the construction contract. At March 31, 2023 and December 31, 2022, Southern Company's unregulated distributed generation business had contract assets of $64 million and $65 million, respectively, and contract liabilities of $44 million and $32 million, respectively, for outstanding performance obligations.
Revenues recognized in the three months ended March 31, 2023, which were included in contract liabilities at December 31, 2022, were $19 million for Southern Company and immaterial for the other Registrants.
Remaining Performance Obligations
The Subsidiary Registrants may enter into long-term contracts with customers in which revenues are recognized as performance obligations are satisfied over the contract term. For Alabama Power, Georgia Power, and Southern Power, these contracts primarily relate to PPAs whereby electricity and generation capacity are provided to a customer. The revenue recognized for the delivery of electricity is variable; however, certain PPAs include a fixed payment for fixed generation capacity over the term of the contract. For Southern Company Gas, these contracts primarily relate to the U.S. General Services Administration contract described above. Southern Company's unregulated distributed generation business also has partially satisfied performance obligations related to certain fixed price contracts. Revenues from contracts with customers related to these performance obligations remaining at March 31, 2023 are expected to be recognized as follows:
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
2023 (remaining)2024202520262027Thereafter
(in millions)
Southern Company$632 $553 $347 $315 $319 $2,089 
Alabama Power17 — — — 
Georgia Power68 60 25 13 14 23 
Southern Power268 345 302 303 310 2,077 
Southern Company Gas15 29 — — — — 
Lease Income
Lease income for the three months ended March 31, 2023 and 2022 is as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi
Power
Southern PowerSouthern Company Gas
 (in millions)
For the Three Months Ended March 31, 2023
Lease income - interest income on sales-type leases$$— $— $$$— 
Lease income - operating leases49 18 21 
Variable lease income69 — — — 75 — 
Total lease income$124 $18 $$$98 $
For the Three Months Ended March 31, 2022
Lease income - interest income on sales-type leases$$— $— $$$— 
Lease income - operating leases51 20 — 21 
Variable lease income84 — — — 90 — 
Total lease income$141 $20 $$$113 $
Lease payments received under tolling arrangements and PPAs consist of either scheduled payments or variable payments based on the amount of energy produced by the underlying electric generating units. Lease income for Alabama Power and Southern Power is included in wholesale revenues.
(E) CONSOLIDATED ENTITIES AND EQUITY METHOD INVESTMENTS
See Note 7 to the financial statements in Item 8 of the Form 10-K for additional information.
Southern Company
At March 31, 2023 and December 31, 2022, Southern Holdings had equity method investments totaling $120 million and $112 million, respectively, primarily related to investments in venture capital funds focused on energy and utility investments. Earnings from these investments were immaterial for both periods presented.
Southern Power
Variable Interest Entities
Southern Power has certain subsidiaries that are determined to be VIEs. Southern Power is considered the primary beneficiary of these VIEs because it controls the most significant activities of the VIEs, including operating and maintaining the respective assets, and has the obligation to absorb expected losses of these VIEs to the extent of its equity interests.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
SP Solar and SP Wind
At March 31, 2023 and December 31, 2022, SP Solar had total assets of $5.8 billion and $5.9 billion, respectively, total liabilities of $0.4 billion, and noncontrolling interests of $1.0 billion and $1.1 billion, respectively. Cash distributions from SP Solar are allocated 67% to Southern Power and 33% to Global Atlantic in accordance with their partnership interest percentage. Under the terms of the limited partnership agreement, distributions without limited partner consent are limited to available cash and SP Solar is obligated to distribute all such available cash to its partners each quarter. Available cash includes all cash generated in the quarter subject to the maintenance of appropriate operating reserves.
At March 31, 2023 and December 31, 2022, SP Wind had total assets of $2.2 billion, total liabilities of $172 million and $169 million, respectively, and noncontrolling interests of $39 million. Under the terms of the limited liability agreement, distributions without Class A member consent are limited to available cash and SP Wind is obligated to distribute all such available cash to its members each quarter. Available cash includes all cash generated in the quarter subject to the maintenance of appropriate operating reserves. Cash distributions from SP Wind are generally allocated 60% to Southern Power and 40% to the three financial investors in accordance with the limited liability agreement.
Southern Power consolidates both SP Solar and SP Wind, as the primary beneficiary, since it controls the most significant activities of each entity, including operating and maintaining their assets. Certain transfers and sales of the assets in the VIEs are subject to partner consent and the liabilities are non-recourse to the general credit of Southern Power. Liabilities consist of customary working capital items and do not include any long-term debt.
Other Variable Interest Entities
Southern Power has other consolidated VIEs that relate to certain subsidiaries that have either sold noncontrolling interests to tax equity investors or acquired less than a 100% interest from facility developers. These entities are considered VIEs because the arrangements are structured similar to a limited partnership and the noncontrolling members do not have substantive kick-out rights.
At March 31, 2023 and December 31, 2022, the other VIEs had total assets of $1.8 billion, total liabilities of $0.2 billion, and noncontrolling interests of $0.8 billion. Under the terms of the partnership agreements, distributions of all available cash are required each month or quarter and additional distributions require partner consent.
Equity Method Investments – SNG"
At December 31, 2022, Southern Power had equity method investments in wind and "Investmentbattery energy storage projects totaling $49 million. During the first quarter 2023, Southern Power sold its remaining equity method investments in SNG,"the projects and received proceeds of $50 million. Earnings (loss) from these investments, including the gains associated with the sales, were immaterial for the three months ended March 31, 2023 and 2022.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern Company Gas
Equity Method Investments
The carrying amounts of Southern Company Gas' equity method investments at March 31, 2023 and December 31, 2022 and related earnings from those investments for the three months ended March 31, 2023 and 2022 were as follows:
Investment BalanceMarch 31, 2023December 31, 2022
(in millions)
SNG$1,249 $1,243 
Other33 33 
Total$1,282 $1,276 
Three Months Ended March 31,
Earnings from Equity Method Investments20232022
(in millions)
SNG$44 $39 
Other1 
Total$45 $40 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(F) FINANCING AND LEASES
Bank Credit Arrangements
See Note 8 to the financial statements under "Bank Credit Arrangements" in Item 8 of the Form 10-K for additional information.
At March 31, 2023, committed credit arrangements with banks were as follows:
Expires
Company2023202420252026TotalUnusedExpires within
One Year
(in millions)
Southern Company parent$— $— $— $2,000 $2,000 $1,998 $— 
Alabama Power— 550 — 700 1,250 1,250 — 
Georgia Power— — — 1,750 1,750 1,726 — 
Mississippi Power— 150 125 — 275 225 — 
Southern Power(a)
— — — 600 600 587 — 
Southern Company Gas(b)
250 — — 1,500 1,750 1,748 250 
SEGCO30 — — — 30 30 30 
Southern Company$280 $700 $125 $6,550 $7,655 $7,564 $280 
(a)Does not include Southern Power Company's $75 million and $100 million continuing letter of credit facilities for standby letters of credit, expiring in 2025 and 2026, respectively, of which $9 million and $16 million, respectively, was unused at March 31, 2023. In March 2023, Southern Power amended the $100 million letter of credit facility, which, among other things, extended the expiration date from 2025 to 2026 and increased the amount from $75 million. Southern Power's subsidiaries are not parties to its bank credit arrangements or letter of credit facilities.
(b)Southern Company Gas, as the parent entity, guarantees the obligations of Southern Company Gas Capital, which is the borrower of $800 million of the credit arrangement expiring in 2026. Southern Company Gas' committed credit arrangement expiring in 2026 also includes $700 million for which Nicor Gas is the borrower and which is restricted for working capital needs of Nicor Gas. Pursuant to the multi-year credit arrangement expiring in 2026, the allocations between Southern Company Gas Capital and Nicor Gas may be adjusted. Nicor Gas is also the borrower under a $250 million credit arrangement expiring in 2023.
Subject to applicable market conditions, Southern Company and its subsidiaries expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, Southern Company and its subsidiaries may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
These bank credit arrangements, as well as the term loan arrangements of the Registrants, Nicor Gas, and SEGCO, contain covenants that limit debt levels and contain cross-acceleration or, in the case of Southern Power, cross-default provisions to other indebtedness (including guarantee obligations) that are restricted only to the indebtedness of the individual company. Such cross-default provisions to other indebtedness would trigger an event of default if Southern Power defaulted on indebtedness or guarantee obligations over a specified threshold. Such cross-acceleration provisions to other indebtedness would trigger an event of default if the applicable borrower defaulted on indebtedness, the payment of which was then accelerated. At March 31, 2023, the Registrants, Nicor Gas, and SEGCO were in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowings.
A portion of the unused credit with banks is allocated to provide liquidity support to the revenue bonds of the traditional electric operating companies and the commercial paper programs of the Registrants, Nicor Gas, and SEGCO. The amount of variable rate revenue bonds of the traditional electric operating companies outstanding requiring liquidity support at March 31, 2023 was approximately $1.7 billion (comprised of approximately $789 million at Alabama Power, $819 million at Georgia Power, and $69 million at Mississippi Power). In addition, at March 31, 2023, Alabama Power and Georgia Power had approximately $120 million and $285 million, respectively, of fixed rate revenue bonds outstanding that are required to be remarketed within the next 12 months.
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(UNAUDITED)
Convertible Senior Notes
In February 2023, Southern Company issued $1.5 billion aggregate principal amount of Series 2023A 3.875% Convertible Senior Notes due December 15, 2025 (Series 2023A Convertible Senior Notes). In March 2023, Southern Company issued an additional $225 million aggregate principal amount of the Series 2023A Convertible Senior Notes upon the exercise by the initial purchasers of their over-allotment option.
Interest on the Series 2023A Convertible Senior Notes is payable semiannually, beginning June 15, 2023. The Series 2023A Convertible Senior Notes will mature on December 15, 2025, unless earlier converted or repurchased, but are not redeemable at the option of Southern Company. The Series 2023A Convertible Senior Notes are direct, unsecured, and unsubordinated obligations of Southern Company, ranking equally with all of Southern Company's other unsecured and unsubordinated indebtedness from time to time outstanding, and are effectively subordinated to all secured indebtedness of Southern Company.
Holders may convert their Series 2023A Convertible Senior Notes at their option prior to the close of business on the business day preceding September 15, 2025, but only under the following circumstances:
during any calendar quarter (and only during such calendar quarter), if the last reported sale price of Southern Company's common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day as determined by Southern Company;
during the five business day period after any 10 consecutive trading day period (Measurement Period) in which the trading price per $1,000 principal amount of Series 2023A Convertible Senior Notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of the common stock and the conversion rate on each such trading day; or
upon the occurrence of certain corporate events specified in the indenture governing the Series 2023A Convertible Senior Notes.
On or after September 15, 2025, a holder may convert all or any portion of its Series 2023A Convertible Senior Notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions.
Southern Company will settle conversions of the Series 2023A Convertible Senior Notes by paying cash up to the aggregate principal amount of the Series 2023A Convertible Senior Notes to be converted and paying or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at Southern Company's election, in respect of the remainder, if any, of Southern Company's conversion obligation in excess of the aggregate principal amount of the Series 2023A Convertible Senior Notes being converted. The Series 2023A Convertible Senior Notes are initially convertible at a rate of 11.8818 shares of common stock per $1,000 principal amount converted, which is approximately equal to $84.16 per share of common stock. The conversion rate will be subject to adjustment upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the indenture governing the Series 2023A Convertible Senior Notes), Southern Company will, in certain circumstances, increase the conversion rate by a number of additional shares of common stock for conversions in connection with the make-whole fundamental change.
Upon the occurrence of a fundamental change (as defined in the indenture governing the Series 2023A Convertible Senior Notes), holders of the Series 2023A Convertible Senior Notes may require Southern Company to purchase all or a portion of their Series 2023A Convertible Senior Notes, in principal amounts equal to $1,000 or an integral multiple thereof, for cash at a price equal to 100% of the principal amount of the Series 2023A Convertible Senior Notes to be purchased plus any accrued and unpaid interest.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Earnings per Share
For Southern Company, the only difference in computing basic and diluted earnings per share (EPS) is attributable to awards outstanding under stock-based compensation plans and the Series 2023A Convertible Senior Notes. EPS dilution resulting from stock-based compensation plans is determined using the treasury stock method and EPS dilution resulting from the Series 2023A Convertible Senior Notes is determined using the net share settlement method. See Note 12 to the financial statements in Item 8 of the Form 10-K and Note (J) to the Condensed Financial Statements under "Southern Company GasEquity Method Investments""Convertible Senior Notes" herein for additional information. Shares used to compute diluted EPS were as follows:
Other
Three Months Ended March 31,
20232022
 (in millions)
As reported shares1,091 1,063 
Effect of stock-based compensation7 
Diluted shares1,098 1,069 
For the three months ended March 31, 2023, there were no anti-dilutive shares. For the three months ended March 31, 2022, an immaterial number of stock-based compensation awards was excluded from the diluted EPS calculation because the awards were anti-dilutive.
For both periods presented, there was no dilution resulting from the Series 2023A Convertible Senior Notes.
Southern Company Leveraged Lease
See Note 9 to the financial statements in Item 8 of the Form 10-K for information on a leveraged lease agreement related to energy generation. In June 2022, the Southern Holdings subsidiary operating the generating plant for the lessee provided notice to the lessee to terminate the related operating and maintenance agreement effective June 30, 2023. Subsequently, the lessee failed to make the semi-annual lease payment due in December 2022. As a result, the Southern Holdings subsidiary was unable to make its corresponding payment to the holders of the underlying non-recourse debt related to the generation assets. The parties to the lease have entered into a forbearance agreement which suspends the related contractual rights of the parties while they continue restructuring negotiations, which could result in rescission of the termination notice. The ultimate outcome of this matter cannot be determined at this time, but is not expected to have a material impact on Southern Company's financial statements. Southern Company will continue to monitor the operational performance of the underlying assets and evaluate the ability of the lessee to continue to make the required lease payments and meet its obligations associated with a future closure or retirement of the generation assets and associated properties, including the dry ash landfill.
(G) INCOME TAXES
See Note 10 to the financial statements in Item 8 of the Form 10-K for additional tax information.
Current and Deferred Income (Expense),Taxes
Tax Credit and Net Operating Loss Carryforwards
The utilization of each Registrant's estimated tax credit and state net operating loss carryforwards and related valuation allowances could be impacted by numerous factors, including the acquisition of additional renewable projects, the purchase of rights to additional PTCs of Plant Vogtle Units 3 and 4 pursuant to certain joint ownership agreements, an increase in Georgia Power's ownership interest in Plant Vogtle Units 3 and 4, changes in taxable income projections, and potential income tax rate changes. See Note (B) and Note 2 to the financial statements in Item 8 of the Form 10-K under "Georgia Power – Nuclear Construction" for additional information on Plant Vogtle Units 3 and 4.
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(UNAUDITED)
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$9 100.0
Effective Tax Rate
Southern Company's effective tax rate is typically lower than the statutory rate due to employee stock plans' dividend deduction, non-taxable AFUDC equity at the traditional electric operating companies, flowback of excess deferred income taxes at the regulated utilities, and federal income tax benefits from ITCs and PTCs primarily at Southern Power.
Details of significant changes in the effective tax rate for the applicable Registrants are provided herein.
Southern Company
Southern Company's effective tax rate was 10.8% for the three months ended March 31, 2023 compared to 14.9% for the corresponding period in 2022. The effective tax rate decrease was primarily due to an increase in the flowback of certain excess deferred income taxes at Alabama Power in 2023, partially offset by the flowback of certain excess deferred income taxes ending in 2022 at Georgia Power.
Alabama Power
Alabama Power's effective tax benefit rate was (0.8)% for the three months ended March 31, 2023 compared to an effective tax rate of 23.3% for the corresponding period in 2022. The effective tax rate decrease was primarily due to an increase in the flowback of certain excess deferred income taxes in 2023. See Note 2 to the financial statements under "Alabama Power – Excess Accumulated Deferred Income Tax Accounting Order" in Item 8 of the Form 10-K for additional information.
Georgia Power
Georgia Power's effective tax rate was 15.1% for the three months ended March 31, 2023 compared to 7.3% for the corresponding period in 2022. The effective tax rate increase was primarily due to the flowback of certain excess deferred income taxes ending in 2022.
Southern Power
Southern Power's effective tax benefit rate was (20.7)% for the three months ended March 31, 2023 compared to (80.0)% for the corresponding period in 2022. The effective tax rate increase was primarily due to higher pre-tax earnings and the impacts of noncontrolling interests.
(H) RETIREMENT BENEFITS
The Southern Company system has a qualified defined benefit, trusteed, pension plan covering substantially all employees, with the exception of employees at PowerSecure. The qualified pension plan is funded in accordance with requirements of the Employee Retirement Income Security Act of 1974, as amended (ERISA). No mandatory contributions to the qualified pension plan are anticipated for the year ending December 31, 2023. The Southern Company system also provides certain non-qualified defined benefits for a select group of management and highly compensated employees, which are funded on a cash basis. In addition, the Southern Company system provides certain medical care and life insurance benefits for retired employees through other postretirement benefit plans. The traditional electric operating companies fund other postretirement trusts to the extent required by their respective regulatory commissions. Southern Company Gas has a separate unfunded supplemental retirement health care plan that provides medical care and life insurance benefits to employees of discontinued businesses.
See Note 11 to the financial statements in Item 8 of the Form 10-K for additional information.
On each Registrant's condensed statements of income, the service cost component of net periodic benefit costs is included in other operations and maintenance expenses and all other components of net periodic benefit costs are included in other income (expense), net. Components of the net periodic benefit costs for the three months ended March 31, 2023 and 2022 are presented in the following tables.
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(UNAUDITED)
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2023
Pension Plans
Service cost$69 $16 $17 $$$
Interest cost156 36 48 11 
Expected return on plan assets(307)(74)(96)(14)(4)(22)
Amortization:
Prior service costs— — — — — (1)
Regulatory asset— — — — — 
Net (gain) loss— — (1)
Net periodic pension income$(74)$(20)$(28)$(4)$— $(3)
Postretirement Benefits
Service cost$$$$— $— $— 
Interest cost18 — 
Expected return on plan assets(21)(8)(7)(1)— (2)
Amortization:
Regulatory asset— — — — — 
Net gain(3)(1)(1)— — (1)
Net periodic postretirement benefit cost (income)$(2)$(4)$(1)$— $— $
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2022
Pension Plans
Service cost$103 $25 $26 $$$
Interest cost102 24 31 
Expected return on plan assets(316)(77)(99)(15)(4)(22)
Amortization:
Prior service costs— — — — — (1)
Regulatory asset— — — — — 
Net loss60 16 18 
Net periodic pension cost (income)$(51)$(12)$(24)$(3)$$(1)
Postretirement Benefits
Service cost$$$$— $— $— 
Interest cost10 — — 
Expected return on plan assets(20)(8)(7)— — (2)
Amortization:
Regulatory asset— — — — — 
Net periodic postretirement benefit cost (income)$(4)$(4)$(1)$— $— $
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(I) FAIR VALUE MEASUREMENTS
At March 31, 2023, assets and liabilities measured at fair value on a recurring basis during the period, together with their associated level of the fair value hierarchy, were as follows:
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Southern Company
Assets:
Energy-related derivatives(a)
$$100 $— $— $104 
Interest rate derivatives— — — 
Investments in trusts:(b)(c)
Domestic equity680 192 — — 872 
Foreign equity138 162 — — 300 
U.S. Treasury and government agency securities— 316 — — 316 
Municipal bonds— 48 — — 48 
Pooled funds – fixed income— — — 
Corporate bonds— 403 — — 403 
Mortgage and asset backed securities— 90 — — 90 
Private equity— — — 160 160 
Cash and cash equivalents— — — 
Other40 12 — 61 
Cash equivalents433 13 — — 446 
Other investments29 — 46 
Total$1,306 $1,374 $$169 $2,857 
Liabilities:
Energy-related derivatives(a)
$40 $354 $— $— $394 
Interest rate derivatives— 261 — — 261 
Foreign currency derivatives— 218 — — 218 
Contingent consideration— — 12 — 12 
Other— 13 — — 13 
Total$40 $846 $12 $— $898 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Alabama Power
Assets:
Energy-related derivatives$— $32 $— $— $32 
Nuclear decommissioning trusts:(b)
Domestic equity404 185 — — 589 
Foreign equity138 — — — 138 
U.S. Treasury and government agency securities— 19 — — 19 
Municipal bonds— — — 
Corporate bonds— 223 — — 223 
Mortgage and asset backed securities— 22 — — 22 
Private equity— — — 160 160 
Other— — 16 
Cash equivalents193 13 — — 206 
Other investments— 29 — — 29 
Total$742 $524 $— $169 $1,435 
Liabilities:
Energy-related derivatives$— $96 $— $— $96 
Georgia Power
Assets:
Energy-related derivatives$— $22 $— $— $22 
Nuclear decommissioning trusts:(b)(c)
Domestic equity276 — — 277 
Foreign equity— 161 — — 161 
U.S. Treasury and government agency securities— 297 — — 297 
Municipal bonds— 47 — — 47 
Corporate bonds— 180 — — 180 
Mortgage and asset backed securities— 68 — — 68 
Other33 12 — — 45 
Total$309 $788 $— $— $1,097 
Liabilities:
Energy-related derivatives$— $132 $— $— $132 
Interest rate derivatives— — — 
Total$— $133 $— $— $133 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Mississippi Power
Assets:
Energy-related derivatives$— $35 $— $— $35 
Cash equivalents— — — 
Total$$35 $— $— $38 
Liabilities:
Energy-related derivatives$— $62 $— $— $62 
Southern Power
Assets:
Energy-related derivatives$— $$— $— $
Cash equivalents13 — — — 13 
Total$13 $$— $— $18 
Liabilities:
Energy-related derivatives$— $14 $— $— $14 
Foreign currency derivatives— 47 — — 47 
Contingent consideration— — 12 — 12 
Other— 13 — — 13 
Total$— $74 $12 $— $86 
Southern Company Gas
Assets:
Energy-related derivatives(a)
$$$— $— $10 
Interest rate derivatives— — — 
Non-qualified deferred compensation trusts:
Domestic equity— — — 
Foreign equity— — — 
Pooled funds – fixed income— — — 
Cash equivalents— — — 
Cash equivalents and restricted cash55 — — — 55 
Total$61 $21 $— $— $82 
Liabilities:
Energy-related derivatives(a)
$40 $50 $— $— $90 
Interest rate derivatives— 72 — — 72 
Total$40 $122 $— $— $162 
(a)Excludes cash collateral of $60 million.
(b)Excludes receivables related to investment income, pending investment sales, payables related to pending investment purchases, and currencies. See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
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(UNAUDITED)
(c)Includes investment securities pledged to creditors and collateral received and excludes payables related to the securities lending program. At March 31, 2023, approximately $37 million of the fair market value of Georgia Power's nuclear decommissioning trust funds' securities were on loan to creditors under the funds' managers' securities lending program. See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
Southern Company, Alabama Power, and Georgia Power continue to elect the option to fair value investment securities held in the nuclear decommissioning trust funds. The fair value of the funds, including reinvested interest and dividends and excluding the funds' expenses, increased (decreased) by the amounts shown in the table below for the three months ended March 31, 2023 and 2022. The changes were recorded as a change to the regulatory assets and liabilities related to AROs for Georgia Power and Alabama Power, respectively.
Three Months Ended
Fair value increases (decreases)March 31, 2023March 31, 2022
(in millions)
Southern Company$102 $(150)
Alabama Power45 (67)
Georgia Power57 (83)
Valuation Methodologies
The energy-related derivatives primarily consist of exchange-traded and over-the-counter financial products for natural gas and physical power products, including, from time to time, basis swaps. These are standard products used within the energy industry and are valued using the market approach. The inputs used are mainly from observable market sources, such as forward natural gas prices, power prices, implied volatility, and overnight index swap interest rates. Interest rate derivatives are also standard over-the-counter products that are valued using observable market data and assumptions commonly used by market participants. The fair value of interest rate derivatives reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future interest rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and occasionally, implied volatility of interest rate options. The fair value of cross-currency swaps reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future foreign currency exchange rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and discount rates. The interest rate derivatives and cross-currency swaps are categorized as Level 2 under Fair Value Measurements as these inputs are based on observable data and valuations of similar instruments. See Note (J) for additional information on how these derivatives are used.
For fair value measurements of the investments within the nuclear decommissioning trusts and the non-qualified deferred compensation trusts, external pricing vendors are designated for each asset class with each security specifically assigned a primary pricing source. For investments held within commingled funds, fair value is determined at the end of each business day through the net asset value, which is established by obtaining the underlying securities' individual prices from the primary pricing source. A market price secured from the primary source vendor is then evaluated by management in its valuation of the assets within the trusts. As a general approach, fixed income market pricing vendors gather market data (including indices and market research reports) and integrate relative credit information, observed market movements, and sector news into proprietary pricing models, pricing systems, and mathematical tools. Dealer quotes and other market information, including live trading levels and pricing analysts' judgments, are also obtained when available.
The NRC requires licensees of commissioned nuclear power reactors to establish a plan for providing reasonable assurance of funds for future decommissioning. See Note 6 to the financial statements under "Nuclear Decommissioning" in Item 8 of the Form 10-K for additional information.
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(UNAUDITED)
Southern Power has contingent payment obligations related to certain acquisitions whereby it is primarily obligated to make generation-based payments to the seller, which commenced at the commercial operation of the respective facility and continue through 2026. The obligations are categorized as Level 3 under Fair Value Measurements as the fair value is determined using significant unobservable inputs for the forecasted facility generation in MW-hours, as well as other inputs such as a fixed dollar amount per MW-hour, and a discount rate. The fair value of contingent consideration reflects the net present value of expected payments and any periodic change arising from forecasted generation is expected to be immaterial.
Southern Power also has payment obligations through 2040 whereby it must reimburse the transmission owners for interconnection facilities and network upgrades constructed to support connection of a Southern Power generating facility to the transmission system. The obligations are categorized as Level 2 under Fair Value Measurements as the fair value is determined using observable inputs for the contracted amounts and reimbursement period, as well as a discount rate. The fair value of the obligations reflects the net present value of expected payments.
"Other investments" primarily includes investments traded in the open market that have maturities greater than 90 days, which are categorized as Level 2 under Fair Value Measurements and are comprised of corporate bonds, bank certificates of deposit, treasury bonds, and/or agency bonds.
At March 31, 2023, the fair value measurements of private market investments held in Alabama Power's nuclear decommissioning trusts that are calculated at net asset value per share (or its equivalent) as a practical expedient totaled $169 million and unfunded commitments related to the private market investments totaled $75 million. Private market investments include high-quality private equity funds across several market sectors, funds that invest in real estate assets, and a private credit fund. Private market funds do not have redemption rights. Distributions from these funds will be received as the underlying investments in the funds are liquidated.
At March 31, 2023, other financial instruments for which the carrying amount did not equal fair value were as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi PowerSouthern Power
Southern Company Gas(*)
(in billions)
Long-term debt, including securities due within one year:
Carrying amount$56.1 $10.6 $14.9 $1.5 $3.0 $7.5 
Fair value51.6 9.5 13.7 1.3 2.9 6.7 
(*)The long-term debt of Southern Company Gas is recorded at amortized cost, including the fair value adjustments at the effective date of the 2016 merger with Southern Company. Southern Company Gas amortizes the fair value adjustments over the remaining lives of the respective bonds, the latest being through 2043.
The fair values are determined using Level 2 measurements and are based on quoted market prices for the same or similar issues or on the current rates available to the Registrants.
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(UNAUDITED)
(J) DERIVATIVES
The Registrants are exposed to market risks, including commodity price risk, interest rate risk, weather risk, and occasionally foreign currency exchange rate risk. To manage the volatility attributable to these exposures, each company nets its exposures, where possible, to take advantage of natural offsets and enters into various derivative transactions for the remaining exposures pursuant to each company's policies in areas such as counterparty exposure and risk management practices. For the traditional electric operating companies, Southern Power, and Southern Company Gas' other businesses, each company's policy is that derivatives are to be used primarily for hedging purposes and mandates strict adherence to all applicable risk management policies. Derivative positions are monitored using techniques including, but not limited to, market valuation, value at risk, stress testing, and sensitivity analysis. Derivative instruments are recognized at fair value in the balance sheets as either assets or liabilities and are presented on a net basis. See Note (I) for additional fair value information. In the statements of cash flows, any cash impacts of settled energy-related and interest rate derivatives are recorded as operating activities. Any cash impacts of settled foreign currency derivatives are classified as operating or financing activities to correspond with the classification of the hedged interest or principal, respectively. See Note 1 to the financial statements under "Financial Instruments" in Item 8 of the Form 10-K for additional information.
Energy-Related Derivatives
The Subsidiary Registrants enter into energy-related derivatives to hedge exposures to electricity, natural gas, and other fuel price changes. However, due to cost-based rate regulations and other various cost recovery mechanisms, the traditional electric operating companies and the natural gas distribution utilities have limited exposure to market volatility in energy-related commodity prices. Each of the traditional electric operating companies and certain of the natural gas distribution utilities of Southern Company Gas manage fuel-hedging programs, implemented per the guidelines of their respective state PSCs or other applicable state regulatory agencies, through the use of financial derivative contracts, which are expected to continue to mitigate price volatility. The traditional electric operating companies (with respect to wholesale generating capacity) and Southern Power have limited exposure to market volatility in energy-related commodity prices because their long-term sales contracts shift substantially all fuel cost responsibility to the purchaser. However, the traditional electric operating companies and Southern Power may be exposed to market volatility in energy-related commodity prices to the extent any uncontracted capacity is used to sell electricity. Southern Company Gas retains exposure to price changes that can, in a volatile energy market, be material and can adversely affect its results of operations.
Southern Company Gas also enters into weather derivative contracts as economic hedges in the event of warmer-than-normal weather. Exchange-traded options are carried at fair value, with changes reflected in operating revenues. Non-exchange-traded options are accounted for using the intrinsic value method. Changes in the intrinsic value for non-exchange-traded contracts are reflected in operating revenues.
Energy-related derivative contracts are accounted for under one of three methods:
Regulatory Hedges – Energy-related derivative contracts designated as regulatory hedges relate primarily to the traditional electric operating companies' and the natural gas distribution utilities' fuel-hedging programs, where gains and losses are initially recorded as regulatory liabilities and assets, respectively, and then are included in fuel expense as the underlying fuel is used in operations and ultimately recovered through an approved cost recovery mechanism.
Cash Flow Hedges – Gains and losses on energy-related derivatives designated as cash flow hedges (which are mainly used to hedge anticipated purchases and sales) are initially deferred in accumulated OCI before being recognized in the statements of income in the same period and in the same income statement line item as the earnings effect of the hedged transactions.
Not Designated – Gains and losses on energy-related derivative contracts that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.
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(UNAUDITED)
Some energy-related derivative contracts require physical delivery as opposed to financial settlement, and this type of derivative is both common and prevalent within the electric and natural gas industries. When an energy-related derivative contract is settled physically, any cumulative unrealized gain or loss is reversed and the contract price is recognized in the respective line item representing the actual price of the underlying goods being delivered.
At March 31, 2023, the net volume of energy-related derivative contracts for natural gas positions, together with the longest hedge date over which the respective entity is hedging its exposure to the variability in future cash flows for forecasted transactions and the longest non-hedge date for derivatives not designated as hedges, were as follows:
Net
Purchased
mmBtu
Longest
Hedge
Date
Longest
Non-Hedge
Date
(in millions)
Southern Company(*)
43720302028
Alabama Power11120262023
Georgia Power12220262023
Mississippi Power8620272023
Southern Power1120302023
Southern Company Gas(*)
10720282028
(*)Southern Company Gas' derivative instruments include both long and short natural gas positions. A long position is a contract to purchase natural gas and a short position is a contract to sell natural gas. Southern Company Gas' volume represents the net of long natural gas positions of 113.6 million mmBtu and short natural gas positions of 6.6 million mmBtu at March 31, 2023, which is also included in Southern Company's total volume.
In addition to the third quarter 2017,volumes discussed above, the traditional electric operating companies and Southern Power enter into physical natural gas supply contracts that provide the option to sell back excess natural gas due to operational constraints. The maximum expected volume of natural gas subject to such a feature is 22 million mmBtu for Southern Company, which includes 6 million mmBtu for Alabama Power, 8 million mmBtu for Georgia Power, 3 million mmBtu for Mississippi Power, and 5 million mmBtu for Southern Power.
For cash flow hedges of energy-related derivatives, the estimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to earnings for the 12-month period ending March 31, 2024 are $(42) million for Southern Company, $(12) million for Southern Power, $(30) million for Southern Company Gas, and immaterial for the other Registrants.
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(UNAUDITED)
Interest Rate Derivatives
Southern Company and certain subsidiaries may enter into interest rate derivatives to hedge exposure to changes in interest rates. Derivatives related to existing variable rate securities or forecasted transactions are accounted for as cash flow hedges where the derivatives' fair value gains or losses are recorded in OCI and are reclassified into earnings at the same time and presented on the same income statement line item as the earnings effect of the hedged transactions. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings on the same income statement line item. Fair value gains or losses on derivatives that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.
At March 31, 2023, the following interest rate derivatives were outstanding:
Notional
Amount
Weighted
Average Interest
Rate Paid
Interest
Rate
Received
Hedge
Maturity
Date
Fair Value Gain (Loss) at March 31, 2023
 (in millions)   (in millions)
Cash Flow Hedges of Forecasted Debt
Georgia Power$750 3.63%N/AFebruary 2033$(1)
Southern Company parent500 3.47%N/AJune
2033
— 
Southern Company Gas250 3.40%N/AAugust
2033
Fair Value Hedges of Existing Debt
Southern Company parent400 1-month LIBOR + 0.68%1.75%March 2028(45)
Southern Company parent1,000 1-month LIBOR + 2.36%3.70%April
2030
(142)
Southern Company Gas500 1-month LIBOR + 0.38%1.75%January 2031(71)
Southern Company$3,400 $(258)
For cash flow hedges of interest rate derivatives, the estimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to interest expense for the 12-month period ending March 31, 2024 are $(15) million for Southern Company and immaterial for the other Registrants. Deferred gains and losses related to interest rate derivatives are expected to be amortized into earnings through 2052 for Southern Company, Alabama Power, and Georgia Power, 2028 for Mississippi Power, and 2046 for Southern Company Gas.
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(UNAUDITED)
Foreign Currency Derivatives
Southern Company and certain subsidiaries, including Southern Power, may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars. Derivatives related to forecasted transactions are accounted for as cash flow hedges where the derivatives' fair value gains or losses are recorded in OCI and are reclassified into earnings at the same time and on the same income statement line as the earnings effect of the hedged transactions, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Southern Company has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of OCI.
At March 31, 2023, the following foreign currency derivatives were outstanding:
Pay NotionalPay
Rate
Receive NotionalReceive
Rate
Hedge
Maturity Date
Fair Value Gain (Loss) at March 31, 2023
(in millions)(in millions) (in millions)
Cash Flow Hedges of Existing Debt
Southern Power$564 3.78%500 1.85%June 2026$(47)
Fair Value Hedges of Existing Debt
Southern Company parent1,476 3.39%1,250 1.88%September 2027(171)
Southern Company$2,040 1,750 $(218)
For cash flow hedges of foreign currency derivatives, the estimated pre-tax losses expected to be reclassified from accumulated OCI to earnings for the 12-month period ending March 31, 2024 are $11 million for Southern Power.
Derivative Financial Statement Presentation and Amounts
The Registrants enter into derivative contracts that may contain certain provisions that permit intra-contract netting of derivative receivables and payables for routine billing and offsets related to events of default and settlements. Southern Company and certain subsidiaries also utilize master netting agreements to mitigate exposure to counterparty credit risk. These agreements may contain provisions that permit netting across product lines and against cash collateral. The fair value amounts of derivative assets and liabilities on the balance sheets are presented net to the extent that there are netting arrangements or similar agreements with the counterparties.
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(UNAUDITED)
The fair value of energy-related derivatives, interest rate derivatives, and foreign currency derivatives was reflected in the balance sheets as follows:
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Company
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Liabilities from risk management activities$41 $230 $123 $121 
Other deferred charges and assets/Other deferred credits and liabilities53 113 52 44 
Total derivatives designated as hedging instruments for regulatory purposes94 343 175 165 
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Assets from risk management activities/Liabilities from risk management activities 38 27 
Other deferred charges and assets/Other deferred credits and liabilities4 4 
Interest rate derivatives:
Assets from risk management activities/Liabilities from risk management activities2 71 12 62 
Other deferred charges and assets/Other deferred credits and liabilities 191 — 240 
Foreign currency derivatives:
Assets from risk management activities/Liabilities from risk management activities 35 — 34 
Other deferred charges and assets/Other deferred credits and liabilities 183 — 182 
Total derivatives designated as hedging instruments in cash flow and fair value hedges6 522 21 549 
Energy-related derivatives not designated as hedging instruments
Assets from risk management activities/Liabilities from risk management activities4 8 13 13 
Other deferred charges and assets/Other deferred credits and liabilities2 1 
Total derivatives not designated as hedging instruments6 9 15 14 
Gross amounts recognized106 874 211 728 
Gross amounts offset(a)
(57)(118)(70)(111)
Net amounts recognized in the Balance Sheets(b)
$49 $756 $141 $617 
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(UNAUDITED)
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Alabama Power(c)
Energy-related derivatives designated as hedging instruments for regulatory purposes
Other current assets/Other current liabilities$14 $54 $42 $21 
Other deferred charges and assets/Other deferred credits and liabilities18 42 20 18 
Total derivatives designated as hedging instruments for regulatory purposes32 96 62 39 
Gross amounts offset(28)(28)(24)(24)
Net amounts recognized in the Balance Sheets$4 $68 $38 $15 
Georgia Power
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Other current liabilities$10 $86 $36 $43 
Other deferred charges and assets/Other deferred credits and liabilities11 45 18 
Total derivatives designated as hedging instruments for regulatory purposes21 131 42 61 
Interest rate derivatives designated as hedging instruments in cash flow and fair value hedges
Assets from risk management activities/Other current liabilities 1 — — 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities1 1 — 
Gross amounts recognized22 133 42 62 
Gross amounts offset(19)(19)(21)(21)
Net amounts recognized in the Balance Sheets$3 $114 $21 $41 
Mississippi Power(c)
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Other current liabilities$11 $37 $33 $24 
Other deferred charges and assets/Other deferred credits and liabilities24 25 26 
Total derivatives designated as hedging instruments for regulatory purposes35 62 59 32 
Gross amounts offset(25)(25)(17)(17)
Net amounts recognized in the Balance Sheets$10 $37 $42 $15 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Power
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Other current assets/Other current liabilities$ $12 $— $12 
Other deferred charges and assets/Other deferred credits and liabilities4  — 
Foreign currency derivatives:
Other current assets/Other current liabilities 11 — 11 
Other deferred charges and assets/Other deferred credits and liabilities 36 — 36 
Total derivatives designated as hedging instruments in cash flow and fair value hedges4 59 59 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities 2 — 
Other deferred charges and assets/Other deferred credits and liabilities1  — 
Total derivatives not designated as hedging instruments1 2 — 
Gross amounts recognized5 61 59 
Net amounts recognized in the Balance Sheets$5 $61 $$59 
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(UNAUDITED)
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Company Gas
Energy-related derivatives designated as hedging instruments for regulatory purposes
Other current assets/Other current liabilities$6 $53 $12 $33 
Other deferred charges and assets/Other deferred credits and liabilities 1 — — 
Total derivatives designated as hedging instruments for regulatory purposes6 54 12 33 
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Other current assets/Other current liabilities 26 15 
Other deferred charges and assets/Other deferred credits and liabilities 4 
Interest rate derivatives:
Other current assets/Other current liabilities1 19 — 14 
Other deferred charges and assets/Other deferred credits and liabilities 53 — 72 
Total derivatives designated as hedging instruments in cash flow and fair value hedges1 102 105 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities3 5 11 12 
Other deferred charges and assets/Other deferred credits and liabilities1 1 
Total derivatives not designated as hedging instruments4 6 12 13 
Gross amounts recognized11 162 28 151 
Gross amounts offset(a)
18 (43)— (41)
Net amounts recognized in the Balance Sheets(b)
$29 $119 $28 $110 
(a)Gross amounts offset includes cash collateral held on deposit in broker margin accounts of $60 million and $41 million at March 31, 2023 and December 31, 2022, respectively.
(b)Net amounts of derivative instruments outstanding exclude immaterial premium and intrinsic value associated with weather derivatives for both periods presented.
(c)Energy-related derivatives not designated as hedging instruments were immaterial for Alabama Power and Mississippi Power for both periods presented.
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(UNAUDITED)
At March 31, 2023 and December 31, 2022, the pre-tax effects of unrealized derivative gains (losses) arising from energy-related derivative instruments designated as regulatory hedging instruments and deferred were as follows:
Regulatory Hedge Unrealized Gain (Loss) Recognized in the Balance Sheet
Derivative Category and Balance Sheet
Location
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern Company Gas
 (in millions)
At March 31, 2023:
Energy-related derivatives:
Other regulatory assets, current$(198)$(44)$(78)$(29)$(47)
Other regulatory assets, deferred(67)(24)(35)(8)— 
Other regulatory liabilities, current19 11 
Other regulatory liabilities, deferred— 
Total energy-related derivative gains (losses)$(237)$(64)$(110)$(27)$(36)
At December 31, 2022:
Energy-related derivatives:
Other regulatory assets, current$(71)$(8)$(26)$(13)$(24)
Other regulatory assets, deferred(23)(7)(14)(2)— 
Other regulatory liabilities, current72 29 19 22 
Other regulatory liabilities, deferred31 20 — 
Total energy-related derivative gains (losses)$$23 $(19)$27 $(22)
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
For the three months ended March 31, 2023 and 2022, the pre-tax effects of cash flow and fair value hedge accounting on accumulated OCI for the applicable Registrants were as follows:
Gain (Loss) Recognized in OCI on DerivativesFor the Three Months Ended March 31,
20232022
(in millions)
Southern Company
Cash flow hedges:
Energy-related derivatives$(45)$42 
Interest rate derivatives(13)
Foreign currency derivatives— (28)
Fair value hedges(*):
Foreign currency derivatives(28)
Total$(86)$27 
Georgia Power
Cash flow hedges:
Interest rate derivatives$(1)$12 
Southern Power
Cash flow hedges:
Energy-related derivatives$(11)$
Foreign currency derivatives— (28)
Total$(11)$(23)
Southern Company Gas
Cash flow hedges:
Energy-related derivatives$(34)$37 
Interest rate derivatives— 
Total$(33)$37 
(*)Represents amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded in OCI.
For the three months ended March 31, 2023, the pre-tax effects of energy-related derivatives designated as cash flow hedging instruments on accumulated OCI were immaterial for Alabama Power and Mississippi Power. There were no such instruments for Alabama Power and Mississippi Power at March 31, 2022.
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(UNAUDITED)
For the three months ended March 31, 2023 and 2022, the pre-tax effects of cash flow and fair value hedge accounting on income were as follows:
Location and Amount of Gain (Loss) Recognized in Income on Cash Flow and Fair Value Hedging RelationshipsFor the Three Months Ended March 31,
20232022
(in millions)
Southern Company
Total cost of natural gas$898 $1,095 
Gain (loss) on energy-related cash flow hedges(a)
(20)
Total depreciation and amortization1,111 892 
Gain (loss) on energy-related cash flow hedges(a)
(9)
Total interest expense, net of amounts capitalized(582)(462)
Gain (loss) on interest rate cash flow hedges(a)
(4)(7)
Gain (loss) on foreign currency cash flow hedges(a)
(3)(6)
Gain (loss) on interest rate fair value hedges(b)
43 (123)
Total other income (expense), net147 145 
Gain (loss) on foreign currency cash flow hedges(a)(c)
10 (25)
Gain (loss) on foreign currency fair value hedges(2)(24)
Amount excluded from effectiveness testing recognized in earnings28 (4)
Southern Power
Total depreciation and amortization$128 $120 
Gain (loss) on energy-related cash flow hedges(a)
(9)
Total interest expense, net of amounts capitalized(33)(37)
Gain (loss) on foreign currency cash flow hedges(a)
(3)(6)
Total other income (expense), net2 2 
Gain (loss) on foreign currency cash flow hedges(a)(c)
10 (25)
Southern Company Gas
Total cost of natural gas$898 $1,095 
Gain (loss) on energy-related cash flow hedges(a)
(20)
Total interest expense, net of amounts capitalized(76)(61)
Gain (loss) on interest rate cash flow hedges(a)
(1)(1)
Gain (loss) on interest rate fair value hedges(b)
13 (36)
(a)Reclassified from accumulated OCI into earnings.
(b)For fair value hedges, changes in the fair value of the derivative contracts are generally equal to changes in the fair value of the underlying debt and have no material impact on income.
(c)The reclassification from accumulated OCI into other income (expense), net was $18 million comparedcompletely offsets currency gains and losses arising from changes in the U.S. currency exchange rates used to $9 millionrecord the euro-denominated notes.
The pre-tax effects of cash flow and fair value hedge accounting on income for energy-related derivatives and interest rate derivatives were immaterial for the corresponding period in 2016. The increase was primarily due to a $14 million gain from the settlement of contractor litigation claims.traditional electric operating companies for both periods presented.
84
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Other income (expense), net $26
 $9
  $5
The successor year-to-date 2017 reflects a $16 million gain from the settlement of contractor litigation claims. The successor period of July 1, 2016 through September 30, 2016 and the predecessor period of January 1, 2016 through June 30, 2016 primarily represent the tax gross-up on contributions in aid of construction and AFUDC.

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

(UNAUDITED)

At March 31, 2023 and December 31, 2022, the following amounts were recorded on the balance sheets related to cumulative basis adjustments for fair value hedges:
Interest Expense, Net
Carrying Amount of the Hedged ItemCumulative Amount of Fair Value Hedging Adjustment included in Carrying Amount of the Hedged Item
Balance Sheet Location of Hedged ItemsAt March 31, 2023At December 31, 2022At March 31, 2023At December 31, 2022
(in millions)(in millions)
Southern Company
Long-term debt$(3,007)$(2,927)$228 $282 
Southern Company Gas
Long-term debt$(428)$(415)$69 $81 
For the three months ended March 31, 2023 and 2022, the pre-tax effects of Amounts Capitalizedenergy-related derivatives not designated as hedging instruments on the statements of income of Southern Company and Southern Company Gas were as follows:
Gain (Loss)
Three Months Ended
March 31,
Derivatives in Non-Designated Hedging RelationshipsStatements of Income Location20232022
(in millions)
Energy-related derivatives:
Natural gas revenues(*)
$ $
Cost of natural gas13 21 
Total derivatives in non-designated hedging relationships$13 $23 
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions) (% change)
$12 30.8
(*)Excludes immaterial gains (losses) recorded in natural gas revenues associated with weather derivatives for both periods presented.
InFor the third quarter 2017, interest expense, netthree months ended March 31, 2023 and 2022, the pre-tax effects of amounts capitalized was $51 million compared to $39 millionenergy-related derivatives not designated as hedging instruments were immaterial for the corresponding period in 2016. The increase was primarily due to additional interest expense on new debt issuances.other Registrants.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Interest expense, net of amounts capitalized $145
 $39
  $96
Contingent Features
The successor year-to-date 2017Registrants do not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade. There are certain derivatives that could require collateral, but not accelerated payment, in the event of various credit rating changes of certain Southern Company subsidiaries. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. At March 31, 2023, the Registrants had no collateral posted with derivative counterparties to satisfy these arrangements.
For Southern Company and the period of July 1, 2016 through September 30, 2016 reflect additional interest expense on new debt issuances, partially offset by reductions of $29 million and $9 million, respectively, resulting fromSouthern Power, the fair value adjustment of long-term debtinterest rate derivative liabilities with contingent features and the maximum potential collateral requirements arising from the credit-risk-related contingent features, at a rating below BBB- and/or Baa3, were $73 million and $23 million, respectively, at March 31, 2023. For the traditional electric operating companies and Southern Power, energy-related derivative liabilities with contingent features and the maximum potential collateral requirements arising from the credit-risk-related contingent features, at a rating below BBB- and/or Baa3, were immaterial at March 31, 2023. The maximum potential collateral requirements arising from the credit-risk-related contingent features for the traditional electric operating companies and Southern Power include certain agreements that could require collateral in acquisition accounting.the event that one or more Southern Company power pool participants has a credit rating change to below investment grade.
Income TaxesAlabama Power and Southern Power maintain accounts with certain regional transmission organizations to facilitate financial derivative transactions and they may be required to post collateral based on the value of the positions in
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Successor
Third Quarter 2017 vs. Third Quarter 2016
(change in millions)(% change)
$45N/M
N/M - Not meaningful
Inthese accounts and the third quarter 2017, income taxes were $52 million compared to $7associated margin requirements. At March 31, 2023, cash collateral posted in these accounts was $15 million for the corresponding period in 2016. The increase reflects $23 million of additional deferred income tax expense associated with State of Illinois tax legislation enacted during the third quarter 2017Southern Power and the allocation of new tax apportionment factors in several statesimmaterial for the inclusion ofAlabama Power. Southern Company Gas intomaintains accounts with brokers or the consolidatedclearing houses of certain exchanges to facilitate financial derivative transactions. Based on the value of the positions in these accounts and the associated margin requirements, Southern Company state tax filings,Gas may be required to deposit cash into these accounts. At March 31, 2023, cash collateral held on deposit in broker margin accounts was $60 million.
The Registrants are exposed to losses related to financial instruments in the event of counterparties' nonperformance. The Registrants only enter into agreements and material transactions with counterparties that have investment grade credit ratings by Moody's and S&P or with counterparties who have posted collateral to cover potential credit exposure. The Registrants have also established risk management policies and controls to determine and monitor the creditworthiness of counterparties in order to mitigate their exposure to counterparty credit risk.
Southern Company Gas uses established credit policies to determine and monitor the creditworthiness of counterparties, including requirements to post collateral or other credit security, as well as higher pre-tax earnings. See FUTURE EARNINGS POTENTIAL herein for additional information.
  Successor  Predecessor
  Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions)  (in millions)
Income taxes $233
 $7
  $87
The successor year-to-date 2017 income taxes reflect $23 millionthe quality of additional deferred income tax expense associated with Statepledged collateral. Collateral or credit security is most often in the form of Illinois tax legislation and the allocationcash or letters of new tax apportionment factors, as well as increased income taxescredit from higher pre-tax earnings. See FUTURE EARNINGS POTENTIAL herein for additional information.
Performance and Non-GAAP Measures
an investment-grade financial institution, but may also include cash or U.S. government securities held by a trustee. Prior to the Merger,entering a physical transaction, Southern Company Gas evaluated segment performance using earnings before interestassigns its counterparties an internal credit rating and taxes (EBIT), which includes operating income, earnings from equity method investments,credit limit based on the counterparties' Moody's, S&P, and other income

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(expense), net. EBIT excludes interest expense, net of amounts capitalizedFitch ratings, commercially available credit reports, and income taxes (benefit), which were evaluated on a consolidated basis for those periods. EBIT is used herein to discuss the results of Southern Company Gas' segments for the predecessor period, as EBIT was the primary measure of segment profit or loss for that period. Subsequent to the Merger,audited financial statements. Southern Company Gas changed its segment performance measure from EBITmay require counterparties to net income to better align with the performance measure utilized by Southern Company. EBIT for the successor third quarters 2017 and 2016 and the successor year-to-date 2017 presented herein is considered a non-GAAP measure. pledge additional collateral when deemed necessary.
Southern Company Gas also discusses consolidated EBIT, which is considered a non-GAAP measure for all periods presented. The presentation of consolidated EBIT is believedutilizes netting agreements whenever possible to provide useful supplemental information regarding a consolidated measure of profit or loss.mitigate exposure to counterparty credit risk. Netting agreements enable Southern Company Gas further believes thatto net certain assets and liabilities by counterparty across product lines and against cash collateral, provided the presentationnetting and cash collateral agreements include such provisions. While the amounts due from, or owed to, counterparties are settled net, they are recorded on a gross basis on the balance sheet as energy marketing receivables and energy marketing payables.
The Registrants do not anticipate a material adverse effect on their respective financial statements as a result of segment EBIT forcounterparty nonperformance.
(K) SEGMENT AND RELATED INFORMATION
Southern Company
The primary businesses of the successor third quarters 2017Southern Company system are electricity sales by the traditional electric operating companies and 2016Southern Power and the successor year-to-date 2017 is useful as it allows for a measure of comparability to other companies with different capital and legal structures, which accordingly may be subject to different interest rates and effective tax rates. The applicable reconciliations of net income to consolidated EBIT and segment EBIT are provided herein.
Adjusted operating margin is a non-GAAP measure that is calculated as operating revenues minus costdistribution of natural gas cost of other sales,by Southern Company Gas. The traditional electric operating companies are vertically integrated utilities providing electric service in three Southeastern states. Southern Power develops, constructs, acquires, owns, and revenue tax expense. Adjusted operating margin excludes other operationsmanages power generation assets, including renewable energy and maintenance expenses, depreciationbattery energy storage projects, and amortization, taxes other than income taxes, and Merger-related expenses, which are includedsells electricity at market-based rates in the calculationwholesale market. Southern Company Gas distributes natural gas through its natural gas distribution utilities and is involved in several other complementary businesses including gas pipeline investments and gas marketing services.
Southern Company's reportable business segments are the sale of electricity by the traditional electric operating income as calculated in accordance with GAAP and reflectedcompanies, the sale of electricity in the consolidated statements of income. The presentation of adjusted operating margin is believed to provide useful information regardingcompetitive wholesale market by Southern Power, and the contribution resulting from customer growth at gas distribution operations since the costsale of natural gas and revenue tax expense can vary significantlyother complementary products and are generally billed directlyservices by Southern Company Gas. Revenues from sales by Southern Power to customers.the traditional electric operating companies were $135 million and $105 million for the three months ended March 31, 2023 and 2022, respectively. Revenues from sales of natural gas from Southern Company Gas further believes that utilizing adjustedto the traditional electric operating margin at gas marketing services, wholesale gas services,companies and gas midstream operations allows it to focus on a direct measure of adjusted operating margin before overhead costs.Southern Power were immaterial for both periods presented. The applicable reconciliation of operating income to adjusted operating margin is provided herein.
EBIT and adjusted operating margin should not be considered alternatives to, or more meaningful indicators of,"All Other" column includes the Southern Company Gas'parent entity, which does not allocate operating performance than consolidated net income attributableexpenses to Southern Company Gas or operating incomebusiness segments. Also, this category includes segments below the quantitative threshold for separate disclosure. These segments include providing distributed energy and resilience solutions and deploying microgrids for commercial, industrial, governmental, and utility customers, as determinedwell as investments in accordance with GAAP. In addition, Southern Company Gas' adjusted operating margin maytelecommunications and, for the three months ended March 31, 2022, leveraged lease projects. All other inter-segment revenues are not be comparable to similarly titled measures of other companies.
  Successor  Predecessor
  Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through
June 30,
2016
  (in millions)  (in millions)
Operating Income $68
 $12
 $555
 $12
  $321
Other operating expenses(a)
 356
 396
 1,181
 396
  815
Revenue taxes(b)
 (8) (8) (74) (8)  (56)
Adjusted Operating Margin $416
 $400
 $1,662
 $400
  $1,080
(a)Includes other operations and maintenance, depreciation and amortization, taxes other than income taxes, and Merger-related expenses.
(b)Nicor Gas' revenue tax expenses, which are passed through directly to customers.

material.
185
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MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

(UNAUDITED)

Financial data for business segments and products and services for the three months ended March 31, 2023 and 2022 was as follows:
Electric Utilities
Traditional
Electric Operating
Companies
Southern
Power
EliminationsTotalSouthern Company GasAll
Other
EliminationsConsolidated
(in millions)
Three Months Ended March 31, 2023
Operating revenues$4,113 $508 $(138)$4,483 $1,875 $166 $(44)$6,480 
Segment net income (loss)(a)(b)
610 102  712 309 (154)(5)862 
At March 31, 2023
Goodwill$ $2 $ $2 $5,015 $144 $ $5,161 
Total assets96,223 13,134 (575)108,782 24,222 2,606 (854)134,756 
Three Months Ended March 31, 2022
Operating revenues$4,191 $539 $(221)$4,509 $2,058 $123 $(42)$6,648 
Segment net income (loss)(a)
774 72 — 846 319 (125)(8)1,032 
At December 31, 2022
Goodwill$— $$— $$5,015 $144 $— $5,161 
Total assets95,861 13,081 (659)108,283 24,621 2,665 (678)134,891 
(a)Attributable to Southern Company.
(b)For Southern Power, includes a $16 million pre-tax gain ($12 million after tax) on the sale of spare parts.
Products and Services
 Electric Utilities' Revenues
RetailWholesaleOtherTotal
(in millions)
Three Months Ended March 31, 2023$3,599 $599 $285 $4,483 
Three Months Ended March 31, 20223,613 664 232 4,509 
 Southern Company Gas' Revenues
Gas
Distribution
Operations
Gas
Marketing
Services
OtherTotal
(in millions)
Three Months Ended March 31, 2023$1,610 $246 $19 $1,875 
Three Months Ended March 31, 20221,791 243 24 2,058 
87
  Successor  Predecessor
  Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016
through
June 30,
2016
  (in millions)  (in millions)
Consolidated Net Income Attributable
to Southern Company Gas
 $15
 $4
 $303
 $4
  $131
Net income attributable to
noncontrolling interest
(*)
   
 
 
  14
Income taxes 52
 7
 233
 7
  87
Interest expense, net of amounts
capitalized
 51
 39
 145
 39
  96
EBIT $118
 $50
 $681
 $50
  $328
(*)See Note 4 to the financial statements of Southern Company Gas under "Variable Interest Entities" in Item 8 of the Form 10-K for additional information.
Segment Information
Adjusted operating margin, operating expenses, and Southern Company Gas' primary performance metric for each segment is illustrated in the tables below. See Note (K) to the Condensed Financial Statements herein for additional information.

Successor
 Third Quarter 2017
Third Quarter 2016

 Adjusted Operating
Operating
Net Income
Adjusted Operating
Operating
Net Income

Margin(*)

Expenses(*)

(Loss)
Margin(*)

Expenses(*)

(Loss)

(in millions)
(in millions)
Gas distribution operations$379

$271

$52

$353

$284

$27
Gas marketing services51

48

1

45

51

(4)
Wholesale gas services(25)
11

(23)
(8)
10

(11)
Gas midstream operations12

13

14

9

13

14
All other2

8

(29)
2

31

(22)
Intercompany eliminations(3)
(3)


(1)
(1)

Consolidated$416

$348

$15

$400

$388

$4
(*)Operating margin and operating expenses are adjusted for Nicor Gas' revenue tax expenses, which are passed through directly to customers.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OFNOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

(UNAUDITED)

Southern Company Gas
 Successor  Predecessor
 Year-to-Date 2017 July 1, 2016 through
September 30, 2016
  January 1, 2016 through
June 30, 2016
  Adjusted Operating Operating Net Income Adjusted Operating Operating Net Income  Adjusted Operating Operating  
 
Margin(*)
 
Expenses(*)
 (Loss) 
Margin(*)
 
Expenses(*)
 (Loss)  
Margin(*)
 
Expenses(*)
 EBIT
 (in millions)  (in millions)
Gas distribution
operations
$1,329
 $866
 $223
 $353
 $284
 $27
  $911
 $560
 $353
Gas marketing
services
213
 149
 36
 45
 51
 (4)  190
 81
 109
Wholesale gas
services
93
 40
 28
 (8) 10
 (11)  (36) 33
 (68)
Gas midstream
operations
28
 38
 38
 9
 13
 14
  15
 24
 (6)
All other7
 22
 (22) 2
 31
 (22)  4
 65
 (60)
Intercompany
eliminations
(8) (8) 
 (1) (1) 
  (4) (4) 
Consolidated$1,662
 $1,107
 $303
 $400
 $388
 $4
  $1,080
 $759
 $328
(*)Operating margin and operating expenses are adjusted for Nicor Gas' revenue tax expenses, which are passed through directly to customers.
Southern Company Gas Distribution Operationsmanages its business through three reportable segments – gas distribution operations, gas pipeline investments, and gas marketing services. The non-reportable segments are combined and presented as all other.
Gas distribution operations is the largest component of Southern Company Gas' business and is subject to regulation and oversight by agencies in each of the states it serves. With the exception of Atlanta Gas Light, Southern Company Gas' second largest utility that operates in a deregulatedincludes natural gas marketlocal distribution utilities that construct, manage, and has a straight-fixed-variable rate design that minimizes the variability of its revenues based on consumption, the earnings of themaintain intrastate natural gas pipelines and gas distribution utilities can be affected by customer consumption patterns that are a function of weather conditions, price levels for natural gas, and general economic conditions that may impact customers' ability to pay for natural gas consumed. Southern Company Gas has various weather mechanisms, such as weather normalization mechanisms and weather derivative instruments, that limit its exposure to weather changes within typical rangesfacilities in its natural gas utilities' service territories.
Successor Third Quarter 2017 vs. Third Quarter 2016
In the third quarter 2017, net income was $52 million compared to $27 million for the corresponding period in 2016. The increase in net income relates to an increase of $26 million in adjusted operating margin, a decrease of $13 million in operating expenses, and an increase of $11 million in other income (expense), net. The change in net income also includes an increase of $7 million in interest expense, net of amounts capitalized, and an increase of $18 million in income tax expense. The increase in adjusted operating margin primarily reflects $24 million in additional revenue from the continued investment in infrastructure replacement programs and base rate increases, primarily at Atlanta Gas Light effective March 1, 2017. The decrease in operating expenses primarily reflects $18 million in rate credits provided to customers of Elizabethtown Gas in 2016 as a condition of the Merger, partially offset by $7 million in additional depreciation due to continued investment in infrastructure programs. The increase in other income (expense), net primarily reflects a $14 million gain from the settlement of contractor litigation claims in 2017. The increase in interest expense includes the impact of intercompany promissory notes executed in December 2016 and the issuance of first mortgage bonds at Nicor Gas on August 10, 2017. The increase in income tax expense relates primarily to higher pre-tax earnings.
Successor Year-to-Date 2017
Net income of $223 million includes $1.3 billion in adjusted operating margin, $866 million in operating expenses, and $23 million in other income (expense), net, which resulted in EBIT of $486 million. Net income also includes

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$119 million in interest expense, net of amounts capitalized and $144 million in income tax expense. Adjusted operating margin reflects $69 million in additional revenue from continued investment in infrastructure replacement programs and base rate increases, primarily at Atlanta Gas Light effective March 1, 2017. Also included in adjusted operating margin was increased customer growth, partially offset by a $6 million negative impact of warmer-than-normal weather, net of hedging. Operating expenses reflect a $21 million increase in depreciation associated with additional assets placed in service, as well as increased compensation expense, legal expenses, and pipeline compliance and maintenance activities. Other income (expense), net reflects a $16 million gain from the settlement of contractor litigation claims. Interest expense reflects the impact of intercompany promissory notes executed in December 2016 and the issuance of first mortgage bonds at Nicor Gas on August 10, 2017.
Successor Period of July 1, 2016 through September 30, 2016
Net income of $27 million includes $353 million in adjusted operating margin, $284 million in operating expenses, including $18 million in rate credits provided to customers, and $6 million in other income (expense), net, which resulted in EBIT of $75 million. Net income also includes $32 million in interest expense and $16 million in income tax expense.
Predecessor Period of January 1, 2016 through June 30, 2016
EBIT of $353 million includes $911 million in adjusted operating margin, $560 million in operating expenses, and $2 million in other income (expense), net. Adjusted operating margin reflects revenue from continued investment in infrastructure replacement programs and increased usage and customer growth, partially offset by a $7 million negative impact of warmer-than-normal weather, net of hedging. Operating expenses reflect depreciation associated with additional assets placed in service.four states.
Gas Marketing Services
Gas marketing servicespipeline investments consists of several businesses that provide energy-related products and services to natural gas markets, including warranty sales. Gas marketing services is weather sensitive and uses a variety of hedging strategies, such as weather derivative instruments and other risk management tools, to partially mitigate potential weather impacts. Operating expenses primarily reflect employee costs, marketing, and bad debt expenses.
Successor Third Quarter 2017 vs. Third Quarter 2016
In the third quarter 2017, net income was $1 million compared to a net loss of $4 million for the corresponding period in 2016. The increase in net income primarily relates to a $6 million increase in adjusted operating margin and a $3 million decrease in operating expenses. The change in net income also includes increases of $1 million and $3 million in interest expense and income tax expense, respectively. Adjusted operating margin primarily reflects a $3 million decrease in unrealized hedge losses, net of recoveries, and a $4 million increase from the elimination of deferred revenue in the third quarter 2016 from the application of acquisition accounting. Operating expenses reflect decreased amortization of intangible assets established in the application of acquisition accounting.
Successor Year-to-Date 2017
Net income of $36 million includes $213 million in adjusted operating margin and $149 million in operating expenses, which resulted in EBIT of $64 million. Net income also includes $4 million in interest expense and $24 million in income tax expense. Adjusted operating margin reflects a $10 million negative impact of warmer-than-normal weather, net of hedging, and $7 million in unrealized hedge losses, net of recoveries. Operating expenses include $30 million in additional amortization of intangible assets established in the application of acquisition accounting.
Successor Period of July 1, 2016 through September 30, 2016
Net loss of $4 million includes $45 million in adjusted operating margin and $51 million in operating expenses, which resulted in a loss before interest and taxes of $6 million. Also included in net loss is $2 million in income tax benefit.

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Predecessor Period of January 1, 2016 through June 30, 2016
EBIT of $109 million includes $190 million in adjusted operating margin and $81 million in operating expenses. Adjusted operating margin reflects $9 million in unrealized hedge gains. Earnings in the predecessor period include $14 million attributable to noncontrolling interest.
Wholesale Gas Services
Wholesale gas services is involved in asset management and optimization, storage, transportation, producer and peaking services, natural gas supply, natural gas services, and wholesale gas marketing. Southern Company Gas has positioned the business to generate positive economic earnings on an annual basis even under low volatility market conditions that can result from a number of factors. When market price volatility increases, wholesale gas services is well positioned to capture significant value and generate stronger results. Operating expenses primarily reflect employee compensation and benefits.
Successor Third Quarter 2017 vs. Third Quarter 2016
In the third quarter 2017, net loss was $23 million compared to a net loss of $11 million for the corresponding period in 2016. The increase in net loss relates primarily to a $17 million decrease in adjusted operating margin, partially offset by an increase of $8 million in income tax benefit due to higher losses. The decrease in adjusted gross margin includes $22 million in additional mark-to-market losses and a $7 million decrease in gains from commercial activity, partially offset by a $12 million positive impact from the amortization of liabilities recorded in the application of acquisition accounting.
Successor Year-to-Date 2017
Net income of $28 million includes $93 million in adjusted operating margin and $40 million in operating expenses, which resulted in EBIT of $53 million. Net income also includes $5 million in interest expense and $20 million in income tax expense.
Successor Period of July 1, 2016 through September 30, 2016
Net loss of $11 million includes $(8) million in adjusted operating margin and $10 million in operating expenses, which resulted in a loss before interest and taxes of $17 million. Also included in net loss is $1 million in interest expense and $7 million in income tax benefit.
Predecessor Period of January 1, 2016 through June 30, 2016
Loss before interest and taxes of $68 million includes $(36) million in adjusted operating margin, $33 million in operating expenses, and $1 million in other income (expense), net.

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The following table illustrates the components of wholesale gas services' adjusted operating margin for the periods presented.
 Successor  Predecessor
 Third Quarter 2017 Third Quarter 2016 Year-to-Date 2017 July 1, 2016 through September 30, 2016  January 1, 2016
through
June 30,
2016
 (in millions)  (in millions)
Commercial activity recognized$3
 $10
 $80
 10
  $34
Gain (loss) on storage derivatives4
 11
 13
 11
  (38)
Gain (loss) on transportation and forward
commodity derivatives
(22) (7) 14
 (7)  (31)
LOCOM adjustments, net of current period
recoveries

 
 
 
  (1)
Purchase accounting adjustments(10) (22) (14) (22)  
Adjusted Operating Margin$(25) $(8) $93
 $(8)  $(36)
Change in Commercial Activity
The commercial activity at wholesale gas services includes recognition of storage and transportation values that were generated in prior periods, which reflect the impact of prior period hedge gains and losses as associated physical transactions occur. Warmer-than-normal weather during the 2016/2017 Heating Season, lower power generation volumes, and build-out of new U.S. pipeline infrastructure, along with increasesjoint ventures in natural gas supply, caused low volatilitypipeline investments including a 50% interest in SNG and a tightening of locational or transportation spreads50% joint ownership interest in 2017, negatively impacting the amount of commercial activity revenues generated relative to demand fees for contracted pipeline transportation and storage capacity, and minimum sharing under asset management agreements. However, asDalton Pipeline. These natural gas prices and forward storage or time spreads increased, wholesale gas services was able to capture higher storage values that it expects to recognize as commercial activity revenues when natural gas is physically withdrawn from storage. Southern Company Gas anticipates continued low volatility in certain areaspipelines enable the provision of wholesale gas services' portfolio.
Change in Storage and Transportation Derivatives
Volatility in the natural gas market arises from a number of factors, such as weather fluctuations or changes in supply or demand for natural gas in different regions of the U.S. The volatilitydiverse sources of natural gas commodity prices has a significant impact on Southern Company Gas' customer rates, long-term competitive position against other energy sources, and the ability of wholesale gas services to capture value from locational and seasonal spreads. In 2017 and 2016, there was little price volatility; however, the potential exists for market fundamentals indicating some level of increased volatility that would benefit Southern Company Gas' portfolio of pipeline transportation capacity. Additionally, during the first nine months of 2017, forward storage or time spreads applicablesupplies to the locations of wholesale gas services' specific storage positions resulted in storage derivative gains. Transportation and forward commodity derivative gains are primarily the result of narrowing transportation basis spreads due to some reduction in supply constraints resulting from new U.S. pipeline infrastructure and increases in natural gas supply and warmer-than-normal weather, which impacted forward prices at natural gas receipt and delivery points, primarily in the Northeast and Midwest regions.
Withdrawal Schedule and Physical Transportation Transactions
The expected natural gas withdrawals from storage and expected offset to prior hedge losses/gains associated with the transportation portfolio of wholesale gas services are presented in the following table, along with the net operating revenues expected at the time of withdrawal from storage and the physical flow of natural gas between contracted transportation receipt and delivery points. Wholesale gas services' expected net operating revenues exclude storage and transportation demand charges, as well as other variable fuel, withdrawal, receipt, and delivery

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charges, but are net of the estimated impact of profit sharing under its asset management agreements. Further, the amounts that are realizable in future periods are based on the inventory withdrawal schedule, planned physical flow of natural gas between the transportation receipt and delivery points, and forward natural gas prices at September 30, 2017. A portion of wholesale gas services' storage inventory and transportation capacity is economically hedged with futures contracts, which results in the realization of substantially fixed net operating revenues.
 Storage withdrawal schedule  
 
Total storage
(WACOG $2.67)
 
Expected net operating gains(a)
 
Physical transportation transactions – expected net operating gains (losses)(b)
 (in mmBtu in millions) (in millions) (in millions)
201722.0
 $4
 $(13)
2018 and thereafter40.0
 17
 28
Total at September 30, 201762.0
 $21
 $15
(a)Represents expected operating gains from planned storage withdrawals associated with existing inventory positions and could change as wholesale gas services adjusts its daily injection and withdrawal plans in response to changes in future market conditions and forward NYMEX price fluctuations.
(b)Represents the periods associated with the transportation derivative gains during which the derivatives will be settled and the physical transportation transactions will occur that offset the derivative gains and losses that were previously recognized.
The unrealized storage and transportation derivative gains do not change the underlying economic value of wholesale gas services' storage and transportation positions and will be reversed when the related transactions occur and are recognized. For more information on wholesale gas services' energy marketing and risk management activities, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Market Price Risk"customers of Southern Company Gas in Item 7 of the Form 10-K.
Gas Midstream Operations
Gas midstream operations consists primarily of gas pipeline investments, with storage and fuels also aggregated into this segment. Gas pipeline investments include SNG, Horizon Pipeline, Atlantic Coast Pipeline, PennEast Pipeline, Dalton Pipeline, and Magnolia Enterprise Holdings, Inc.Gas. See Note (J) to the Condensed Financial Statements herein and Notes 4 and 117 to the financial statements of Southernunder "Southern Company Gas under "Equity Method Investments – SNG" and "Investment in SNG," respectively,Gas" in Item 8 of the Form 10-K for additional information.
Successor Third Quarter 2017 vs. Third Quarter 2016Gas marketing services provides natural gas marketing to end-use customers primarily in Georgia and Illinois through SouthStar.
In both the third quarter 2017 and the corresponding period in 2016 net income was $14 million. Net income reflects a $3 million increase in adjusted operating margin and a $4 million increase in earnings from equity method investments at SNG, PennEast Pipeline, and Horizon Pipeline. The change in net income alsoall other column includes a $9 million increase in interest expense, net of amounts capitalized and a $2 million decrease in income taxes. The increase in interest expense includes the impact of intercompany promissory notes executed in December 2016.
Successor Year-to-Date 2017
Net income of $38 million includes $28 million in adjusted operating margin, $38 million in operating expenses, $97 million in earnings from equity method investments, consisting primarily of earnings from equity method investments at SNG, and $3 million in other income (expense), net, which resulted in EBIT of $90 million. Also included in net income are $25 million in interest expense and $27 million in income tax expense.
Successor Period of July 1, 2016 through September 30, 2016
Net income of $14 million includes $9 million in adjusted operating margin, $13 million in operating expenses, $28 million in earnings from equity method investments, consisting primarily of earnings from equity method

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investments at SNG, and $1 million in other income (expense), net, which resulted in EBIT of $25 million. Also included in net income is $11 million in income tax expense.
Predecessor Period of January 1, 2016 through June 30, 2016
Loss before interest and taxes of $6 million includes $15 million in adjusted operating margin, $24 million in operating expenses, and $3 million of other income (expense), net.
All Other
All other includes Southern Company Gas' investment in Triton, AGL Services Company, and Southern Company Gas Capital, as well as various corporate operating expenses that are not allocated to the reportable segments and interest income (expense) associated with affiliate financing arrangements.
Successor Third Quarter 2017 vs. Third Quarter 2016
Insubsidiaries that fall below the third quarter 2017, net loss was $29 million compared to $22 million in the corresponding period in 2016.quantitative threshold for separate disclosure, including storage and fuels operations. The increase in net loss reflects a $23 million decrease in operating expenses and a decrease of $2 million inall other income (expense), net. Net loss also reflected a $6 million increase in interest expense, net of amounts capitalized and an increase of $34 million in income taxes. The decrease in operating expenses reflects a $35 million decrease in Merger-related expenses, partially offset by a $10 million increase in other operations and maintenance expenses and a $3 million increase from the acceleration of depreciation relating to certain assets. Interest expense decreased as a result of intercompany promissory notes executed in December 2016. The increase in income taxes primarily reflects additional deferred income tax expenses associated with State of Illinois tax legislation enacted during the third quarter 2017, as well as the allocation of new tax apportionment factors in several states for the inclusion of Southern Company Gas into the consolidated Southern Company state tax filings.
Successor Year-to-Date 2017, Successor Period of July 1, 2016 through September 30, 2016, and Predecessor Period of January 1, 2016 through June 30, 2016
For the successor period of July 1, 2016 through September 30, 2016 and the predecessor period of January 1, 2016 through June 30, 2016, Merger-related expenses were $35 million and $56 million, respectively. There were no Merger-related expenses during the successor year-to-date 2017. In the successor year-to-date 2017, depreciation and amortization includes $7 million from the acceleration of depreciation relating to certain assets. Interest expense, net of amounts capitalized was $8 million, $6 million, and $34 million, respectively, in the successor year-to-date 2017, the successor period of July 1, 2016 through September 30, 2016, and the predecessor period of January 1, 2016 through June 30, 2016. Income taxes were $18 million in the successor year-to-date 2017 and income tax benefit was $11 million and $35 million, respectively, in the successor period of July 1, 2016 through September 30, 2016 and the predecessor period of January 1, 2016 through June 30, 2016. In the successor year-to-date 2017, income taxes reflect $23 million of additional deferred income tax expense associated with State of Illinois tax legislation enacted during the third quarter 2017 and the allocation of new tax apportionment factors in several states for the inclusion of Southern Company Gas into the consolidated Southern Company state tax filings.

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Segment Reconciliations
Reconciliations of consolidated net income attributable to Southern Company Gas to EBIT for the successor third quarter and year-to-date 2017, and operating income to adjusted operating margin for all periods presented, are in the following tables. See Note (K) to the Condensed Financial Statements herein for additional information.

Successor

Third Quarter 2017

Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated

(in millions)
Consolidated Net Income
(Loss)
$52
$1
$(23)$14
$(29)$
$15
Income taxes (benefit)34
1
(15)9
23

52
Interest expense, net of
amounts capitalized
39
1
2
9


51
EBIT$125
$3
$(36)$32
$(6)$
$118
  Successor
  Third Quarter 2016
  Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated
  (in millions)
Consolidated Net Income
(Loss)
 $27
$(4)$(11)$14
$(22)$
$4
Income taxes (benefit) 16
(2)(7)11
(11)
7
Interest expense, net of
amounts capitalized
 32

1

6

39
EBIT $75
$(6)$(17)$25
$(27)$
$50
 Successor
 Year-to-Date 2017
 Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated
 (in millions)
Consolidated Net Income
(Loss)
$223
$36
$28
$38
$(22)$
$303
Income taxes144
24
20
27
18

233
Interest expense, net of
amounts capitalized
119
4
5
25
(8)
145
EBIT$486
$64
$53
$90
$(12)$
$681

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Successor

Third Quarter 2017

Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated

(in millions)
Operating Income (Loss)$108
$3
$(36)$(1)$(6)$
$68
Other operating expenses(a)
279
48
11
13
8
(3)356
Revenue tax expense(b)
(8)




(8)
Adjusted Operating
Margin
$379
$51
$(25)$12
$2
$(3)$416
 Successor
 Third Quarter 2016
 Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated
 (in millions)
Operating Income (Loss)$69
$(6)$(18)$(4)$(29)$
$12
Other operating expenses(a)
292
51
10
13
31
(1)396
Revenue tax expense(b)
(8)




(8)
Adjusted Operating
Margin
$353
$45
$(8)$9
$2
$(1)$400
 Successor
 Year-to-Date 2017
 Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated
 (in millions)
Operating Income (Loss)$463
$64
$53
$(10)$(15)$
$555
Other operating expenses(a)
940
149
40
38
22
(8)1,181
Revenue tax expense(b)
(74)




(74)
Adjusted Operating
Margin
$1,329
$213
$93
$28
$7
$(8)$1,662
 Predecessor
 January 1, 2016 through June 30, 2016
 Gas Distribution OperationsGas Marketing ServicesWholesale Gas ServicesGas Midstream OperationsAll OtherIntercompany EliminationConsolidated
 (in millions)
Operating Income (Loss)$351
$109
$(69)$(9)$(61)$
$321
Other operating expenses(a)
616
81
33
24
65
(4)815
Revenue tax expense(b)
(56)




(56)
Adjusted Operating Margin$911
$190
$(36)$15
$4
$(4)$1,080
(a)Includes other operations and maintenance, depreciation and amortization, taxes other than income taxes, and Merger-related expenses.
(b)Nicor Gas' revenue tax expenses, which are passed through directly to customers.

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FUTURE EARNINGS POTENTIAL
The results of operations discussed above are not necessarily indicative of Southern Company Gas' future earnings potential. The level of Southern Company Gas' future earnings depends on numerous factors that affect the opportunities, challenges, and risks of its primary business of natural gas distribution and complementary businesses in the gas marketing services, wholesale gas services, and gas midstream operations sectors. These factors include Southern Company Gas' ability to maintain a constructive regulatory environment that allows for the timely recovery of prudently-incurred costs, the completion and subsequent operation of ongoing infrastructure and other construction projects, creditworthiness of customers, Southern Company Gas' ability to optimize its transportation and storage positions, and its ability to re-contract storage rates at favorable prices. Future earnings in the near term will depend, in part, upon maintaining and growing sales and customers which are subject to a number of factors. These factors include weather, competition, new energy contracts with other utilities, energy conservation practiced by customers, the use of alternative energy sources by customers, the price of natural gas, the price elasticity of demand, and the rate of economic growth or decline in Southern Company Gas' service territories. Demand for natural gas is primarily driven by the pace of economic growth that may be affected by changes in regional and global economic conditions, which may impact future earnings.
Current proposals related to potential federal tax reform legislation are primarily focused on reducing the corporate income tax rate, allowing 100% of capital expenditures to be deducted, and eliminating the interest deduction. The ultimate impact of any tax reform proposals is dependent on the final form of any legislation enacted and the related transition rules and cannot be determined at this time, but could have a material impact on Southern Company Gas' financial statements.
On July 6, 2017, the State of Illinois enacted tax legislation that repealed its non-combination tax rule and increased the effective corporate income tax rate from 5.25% to 7.0% (making the total corporate tax rate 9.5% when combined with the 2.5% personal property replacement tax) effective July 1, 2017. In addition to increasing taxes on future earnings, this legislation required Southern Company Gas to increase accumulated deferred income tax liabilities by $24 million during the third quarter 2017 to reflect these changes, $15 million of which was expensed and $9 million was recorded as a regulatory asset. In addition, during the third quarter 2017, Southern Company calculated new apportionment factors in several states to include Southern Company Gas in its consolidated tax filings, which resulted in $8 million of additional deferred income tax expenses.
On October 15, 2017, Southern Company Gas subsidiary, Pivotal Utility Holdings, entered into agreements for the sale of the assets of two of its natural gas distribution utilities, Elizabethtown Gas and Elkton Gas, to South Jersey Industries, Inc. The execution of the asset purchase agreements triggered an interim assessment of goodwill, which is currently being performed with the assistance of a third-party valuation specialist. The preliminary results of this valuation indicate that the estimated fair values of the reporting units with goodwill exceed their carrying amounts and are not at risk of impairment. See OVERVIEW "Merger, Acquisition, and Disposition Activities" and Note (I) to the Condensed Financial Statements under "Southern Company Gas" herein for additional information on the sales.
Volatility of natural gas prices has a significant impact on Southern Company Gas' customer rates, long-term competitive position against other energy sources, and the ability of its gas marketing services and wholesale gas services segments to capture value from locational and seasonal spreads. Additionally, changes in commodity prices subject a significant portion of Southern Company Gas' operations to earnings variability. Over the longer-term, volatility is expected to be low to moderate and locational and/or transportation spreads are expected to decrease as new pipelines are built to reduce the existing supply constraints in the shale areas of the Northeast U.S. To the extent these pipelines are delayed or not built, volatility could increase. Additional economic factors may contribute to this environment, including a significant drop in oil and natural gas prices, which could lead to consolidation of natural gas producers or reduced levels of natural gas production. Further, if economic conditions continue to improve, including the new housing market, the demand for natural gas may increase, which may cause natural gas prices to rise and drive higher volatility in the natural gas markets on a longer-term basis.

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For additional information relating to these issues, see "Risk Factors" of Southern Company Gas in Item 1A of the Form 10-K.
Environmental Matters
Compliance costs related to federal and state environmental statutes and regulations could affect earnings if such costs cannot continue to be fully recovered in rates on a timely basis or through market-based contracts. Environmental compliance spending over the next several years may differ materially from the amounts estimated. The timing, specific requirements, and estimated costs could change as environmental statutes and regulations are adopted or modified, as compliance plans are revised or updated, and as legal challenges to rules are completed. Further, higher costs that are recovered through regulated rates could contribute to reduced demand for natural gas, which could negatively affect results of operations, cash flows, and financial condition. See Note (B) under "Environmental Matters Environmental Remediation" to the Condensed Financial Statements herein and MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters" of Southern Company Gas in Item 7 and Note 3 to the financial statements of Southern Company Gas under "Environmental Matters" in Item 8 of the Form 10-K for additional information.
Natural Gas Storage
A wholly-owned subsidiary of Southern Company Gas owns and operatescolumn included a natural gas storage facility consisting of two salt dome caverns in Louisiana. Periodic integrity tests are requiredTexas through its sale in accordance with rules of the Louisiana Department of Natural Resources (LDNR). In August 2017, in connection with an ongoing integrity project, updated seismic mapping indicated the proximity of one of the caverns to the edge of the salt dome may be less than the required minimum and could result in Southern Company Gas retiring the cavern early. At September 30, 2017, the facility's property, plant, and equipment had a net book value of $111 million, of which the cavern itself represents approximately 20%. A potential early retirement of this cavern is dependent upon several factors including the results of ongoing third-party technical engineering reviews, testing, and compliance with an order from the LDNR detailing the requirements to place the cavern back in service, which includes, among other things, obtaining a core sample to determine the composition of the sheath surrounding the edge of the salt dome. Early retirement of the cavern could trigger impairment of other long-lived assets associated with the natural gas storage facility. The ultimate outcome of this matter cannot be determined at this time, but could have a material impact on Southern Company Gas' financial statements.
FERC Matters
November 2022. See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "FERC Matters" of Southern Company Gas in Item 7 and Note 415 to the financial statements of Southernunder "Southern Company GasGas" in Item 8 of the Form 10-K for additional information, regardingincluding the Dalton Pipeline project.sale of a natural gas storage facility in California expected to be completed later in 2023.
On August 1, 2017,Business segment financial data for the Dalton Pipelinethree months ended March 31, 2023 and 2022 was placed in service as authorizedfollows:
Gas Distribution OperationsGas
Pipeline Investments
Gas Marketing ServicesTotalAll OtherEliminationsConsolidated
(in millions)
Three Months Ended March 31, 2023
Operating revenues$1,618 $8 $246 $1,872 $12 $(9)$1,875 
Segment net income221 31 50 302 7  309 
Total assets at March 31, 202322,223 1,583 1,596 25,402 9,598 (10,778)24,222 
Three Months Ended March 31, 2022
Operating revenues$1,803 $$243 $2,054 $16 $(12)$2,058 
Segment net income214 29 66 309 10 — 319 
Total assets at December 31, 202222,040 1,577 1,616 25,233 8,943 (9,555)24,621 
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Table of ContentsIndex to Financial Statements
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.
Page
Combined Management's Discussion and Analysis of Financial Condition and Results of Operations
The following Management's Discussion and Analysis of Financial Condition and Results of Operations is a combined presentation; however, information contained herein relating to any individual Registrant is filed by such Registrant on its own behalf and each Registrant makes no representation as to information related to the FERC and transportation service for customers commenced.other Registrants.
On October 13, 2017, the Atlantic Coast Pipeline project received FERC approval.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS
Regulatory Matters
See Note 3 to the financial statements of Southern Company Gas under "Regulatory Matters" in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements under "Regulatory MattersSouthern Company Gas" herein for additional information regarding Southern Company Gas' regulatory matters.
Riders
Nicor Gas has established a variable tax cost adjustment rider, which was approved by the Illinois Commission effective July 16, 2017. This rider provides for recovery of the invested capital tax imposed on Nicor Gas through an annual true-up and reconciliation mechanism based on amounts approved in prior rate cases. Accordingly, this rider will not have a significant effect on Southern Company Gas' net income.

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Natural Gas Cost Recovery
Southern Company Gas has established natural gas cost recovery rates approved by the relevant state regulatory agencies in the states in which it serves. Natural gas cost recovery revenues are adjusted for differences in actual recoverable natural gas costs and amounts billed in current regulated rates. Changes in the billing factor will not have a significant effect on Southern Company Gas' revenues or net income, but will affect cash flows.
Base Rate Cases
Settled Base Rate Cases
On February 21, 2017, the Georgia PSC approved the Georgia Rate Adjustment Mechanism (GRAM) and a $20 million increase in annual base rate revenues for Atlanta Gas Light, effective March 1, 2017. GRAM adjusts base rates annually, up or down, based on the previously approved ROE of 10.75% and does not collect revenue through special riders and surcharges. Various infrastructure programs previously authorized by the Georgia PSC under Atlanta Gas Light's STRIDE program, which include the Integrated Vintage Plastic Replacement Program and Integrated System Reinforcement Program, will continue under GRAM and the recovery of and return on the infrastructure program investments will be included in annual base rate adjustments. The Georgia PSC will review Atlanta Gas Light's performance annually under GRAM.
Pursuant to the GRAM approval, Atlanta Gas Light and the staff of the Georgia PSC agreed to a variation to the Integrated Customer Growth Program that was formerly part of Atlanta Gas Light's STRIDE program. As a result, a new tariff was created, effective October 10, 2017, to provide $15 million annually for Atlanta Gas Light to commit to strategic economic development projects.
Beginning with the next rate adjustment in June 2018, Atlanta Gas Light's recovery of the previously unrecovered Pipeline Replacement Program revenue through 2014, as well as the mitigation costs associated with the Pipeline Replacement Program that were not previously included in its rates, will also be included in GRAM. In connection with the GRAM approval, the last monthly Pipeline Replacement Program surcharge increase became effective March 1, 2017.
In September 2016, Elizabethtown Gas filed a general base rate case with the New Jersey BPU requesting a $19 million increase in annual base rate revenues. The requested increase was based on a projected 12-month test year ending March 31, 2017 and a ROE of 10.25%. On June 30, 2017, the New Jersey BPU approved a settlement that provides for a $13 million increase in annual base rate revenues, effective July 1, 2017, based on a ROE of 9.6%. Also included in the settlement was a new composite depreciation rate that is expected to result in a $3 million annual reduction of depreciation. See OVERVIEW – "Merger, Acquisition, and Disposition Activities" and Note (I) to the Condensed Financial Statements under "Southern Company Gas" herein for information on the proposed sale of Elizabethtown Gas.
Pending Base Rate Cases
On March 10, 2017, Nicor Gas filed a general base rate case with the Illinois Commission requesting a $208 million increase in annual base rate revenues. The requested increase is based on a 2018 projected test year and a ROE of 10.7%. The Illinois Commission is expected to rule on the requested increase in December 2017, after which rate adjustments will be effective.
On March 31, 2017, Virginia Natural Gas filed a general base rate case with the Virginia Commission requesting a $44 million increase in annual base rate revenues. The requested increase was based on a projected 12-month test year beginning September 1, 2017 and a ROE of 10.25%. The requested increase included $13 million related to the recovery of investments under the Steps to Advance Virginia's Energy (SAVE) program. On October 3, 2017, Virginia Natural Gas entered into a proposed stipulation with the Staff of the Virginia Commission, the Office of the Attorney General, Division of Consumer Counsel, and the Virginia Industrial Gas Users' Association resolving all related issues. The proposed stipulation includes a $34 million increase in annual base rate revenues, including $13 million related to the recovery of investments under the SAVE program. An authorized ROE range of 9.0% to 10.0% with a midpoint of 9.5% will be used to determine the revenue requirement in any filing, other than for a

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change in base rates. The Virginia Commission is expected to rule on the proposed stipulation in the fourth quarter 2017. Rate adjustments based on the proposed stipulation became effective September 1, 2017, subject to refund.
On October 23, 2017, Florida City Gas filed a general base rate case with the Florida PSC requesting a $19 million increase in annual base rate revenues. The requested increase is based on a 2018 projected test year and a ROE of 11.25%. The requested increase includes $3 million related to the recovery of investments under the Safety, Access, and Facility Enhancement (SAFE) program. Additionally, Florida City Gas requested interim rates of $5 million to be effective in January 2018, subject to refund. The Florida PSC is expected to rule on the requested increase in mid-2018.
The ultimate outcome of these pending base rate cases cannot be determined at this time.
Regulatory Infrastructure Programs
Southern Company Gas is engaged in various infrastructure programs that update or expand its gas distribution systems to improve reliability and ensure the safety of its utility infrastructure, and recovers in rates its investment and a return associated with these infrastructure programs.
Nicor Gas
In 2014, the Illinois Commission approved Nicor Gas' nine-year regulatory infrastructure program, Investing in Illinois. Under this program, Nicor Gas placed into service $178 million of qualifying assets during the first nine months of 2017.
Atlanta Gas Light
Atlanta Gas Light's STRIDE program, which started in 2009, consists of three individual programs that update and expand gas distribution systems and LNG facilities as well as improve system reliability to meet operational flexibility and customer growth. Through the programs under STRIDE, Atlanta Gas Light invested $127 million during the first nine months of 2017. The recovery of and return on current and future capital investments under the STRIDE program are included in the annual base rate revenue adjustment under GRAM.
In August 2016, Atlanta Gas Light filed a petition with the Georgia PSC for approval of a four-year extension of its Integrated System Reinforcement Program (i-SRP) seeking approval to invest an additional $177 million to improve and upgrade its core gas distribution system in years 2017 through 2020. Subsequently, the proposed capital investments associated with the extension of i-SRP were included in the 2017 annual base rate revenue under GRAM approved by the Georgia PSC on February 21, 2017.
See "Base Rate Cases" herein for additional information.
Elizabethtown Gas
In 2013, the New Jersey BPU approved the extension of Elizabethtown Gas' Aging Infrastructure Replacement program, under which Elizabethtown Gas invested $16 million during the first nine months of 2017. Effective July 1, 2017, investments under this program are being recovered through base rate revenues.
Virginia Natural Gas
In March 2016, the Virginia Commission approved an extension to the SAVE program, under which Virginia Natural Gas invested $21 million during the first nine months of 2017.
Florida City Gas
The Florida PSC approved Florida City Gas' SAFE program in 2015. Under the program, Florida City Gas invested $9 million during the first nine months of 2017.
Other Matters
Southern Company Gas is involved in various other matters being litigated and regulatory matters that could affect future earnings. In addition, Southern Company Gas is subject to certain claims and legal actions arising in the

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ordinary course of business. The ultimate outcome of such pending or potential litigation or regulatory matters cannot be predicted at this time; however, for current proceedings not specifically reported in Note (B) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Southern Company Gas' financial statements. See Note (B) to the Condensed Financial Statements herein for a discussion of various other contingencies and regulatory matters, and other matters being litigated which may affect future earnings potential.
Nicor Gas and Nicor Energy Services Company, wholly-owned subsidiaries of Southern Company Gas, and Nicor Inc. were defendants in a putative class action initially filed in 2011 in the state court in Cook County, Illinois. The plaintiffs purported to represent a class of the customers who purchased the Gas Line Comfort Guard product from Nicor Energy Services Company and variously alleged that the marketing, sale, and billing of the Gas Line Comfort Guard product violated the Illinois Consumer Fraud and Deceptive Business Practices Act, constituting common law fraud and resulting in unjust enrichment of these entities. The plaintiffs sought, on behalf of the classes they purported to represent, actual and punitive damages, interest, costs, attorney fees, and injunctive relief. On February 8, 2017, the judge denied the plaintiffs' motion for class certification and Southern Company Gas' motion for summary judgment. On March 7, 2017, the parties reached a settlement, which was finalized and effective on April 3, 2017. The settlement did not have a material impact on Southern Company Gas' financial statements.
ACCOUNTING POLICIES
Application of Critical Accounting Policies and Estimates
Southern Company Gas prepares its financial statements in accordance with GAAP. Significant accounting policies are described in Note 1 to the financial statements of Southern Company Gas in Item 8 of the Form 10-K. In the application of these policies, certain estimates are made that may have a material impact on Southern Company Gas' results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements. See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Application of Critical Accounting Policies and Estimates" of Southern Company Gas in Item 7 of the Form 10-K for a complete discussion of Southern Company Gas' critical accounting policies and estimates related to Utility Regulation, Pushdown of Acquisition Accounting, Assessment of Assets, Derivatives and Hedging Activities, Pension and Other Postretirement Benefits, and Contingent Obligations.
Recently Issued Accounting Standards
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES – "Recently Issued Accounting Standards" of Southern Company Gas in Item 7 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standard is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While Southern Company Gas expects most of its revenue to be included in the scope of ASC 606, it has not fully completed its evaluation of all revenue arrangements. The majority of Southern Company Gas' revenue, including energy provided to customers, is from tariff offerings that provide natural gas without a defined contractual term, as well as longer-term contractual agreements, including non-derivative natural gas asset management and optimization arrangements. Southern Company Gas expects that the revenue from contracts with these customers will not result in a significant shift in the timing of revenue recognition for such sales.
Southern Company Gas' ongoing evaluation of other revenue streams and related contracts includes unregulated sales to customers. Some revenue arrangements, such as energy-related derivatives and alternative revenue programs, are excluded from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on Southern Company Gas' financial statements. In addition, the power

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and utilities industry continues to evaluate other specific industry issues, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Southern Company Gas expects CIAC to be out of the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. Southern Company Gas intends to use the modified retrospective method of adoption effective January 1, 2018. Southern Company Gas has also elected to utilize practical expedients which allow it to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in Southern Company Gas' financial statements, Southern Company Gas will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). ASU 2017-04 removes the requirement to compare the implied fair value of goodwill with the carrying amount as part of Step 2 of the goodwill impairment test. Under the new standard, the goodwill impairment loss will be measured as the excess of a reporting unit's carrying amount over its fair value, not exceeding the total amount of goodwill allocated to that reporting unit, which may increase the frequency of goodwill impairment charges if a future goodwill impairment test does not pass the Step 1 evaluation. ASU 2017-04 is effective prospectively for annual and interim periods beginning on or after December 15, 2019, and early adoption is permitted on testing dates after January 1, 2017. Southern Company Gas is evaluating the standard and expects to early adopt ASU 2017-04 effective January 1, 2018.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Southern Company Gas' operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Southern Company Gas' financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. Southern Company Gas is evaluating the standard and expects to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on Southern Company Gas' financial statements.

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Overview" of Southern Company Gas in Item 7 of the Form 10-K for additional information. As a result of the Merger that closed on July 1, 2016, the results reported herein include disclosure of the successor third quarter and year-to-date 2017, the successor period of July 1, 2016 through September 30, 2016, and the predecessor period of January 1, 2016 through June 30, 2016. See OVERVIEW – "Merger, Acquisition, and Disposition Activities" and Note (I) to the Condensed Financial Statements under "Southern CompanyMerger with Southern Company Gas" herein for additional information.
Southern Company Gas' financial condition remained stable at September 30, 2017. Southern Company Gas intends to continue to monitor its access to short-term and long-term capital markets as well as bank credit agreements to meet future capital and liquidity needs. See "Capital Requirements and Contractual Obligations," "Sources of Capital," and "Financing Activities" herein for additional information.
By regulation, Nicor Gas is restricted, to the extent of its retained earnings balance, in the amount it can dividend or loan to affiliates and is not permitted to make money pool loans to affiliates. Due to the increased working capital requirements associated with Nicor Gas' Investing in Illinois infrastructure replacement program, since 2015, Nicor Gas has temporarily ceased distributing dividends to Southern Company Gas. Elizabethtown Gas is restricted by its dividend policy as established by the New Jersey BPU in the amount it can dividend to its parent company to the extent of 70% of its quarterly net income. Additionally, as stipulated in the New Jersey BPU's order approving the Merger, Southern Company Gas is prohibited from paying dividends to its parent company, Southern Company, if Southern Company Gas' senior unsecured debt rating falls below investment grade. As of September 30, 2017, the amount of subsidiary retained earnings and net income available to dividend totaled $752 million. These restrictions did not have any impact on Southern Company Gas' ability to meet its cash obligations, nor does management expect such restrictions to materially impact Southern Company Gas' ability to meet its currently anticipated cash obligations.
Net cash provided from (used for) operating activities totaled $1.1 billion for the successor first nine months of 2017, $(342) million for the successor period of July 1, 2016 through September 30, 2016, and $1.1 billion for the predecessor period of January 1, 2016 through June 30, 2016. These cash flows were primarily driven by the sale of natural gas inventory during the respective periods.
Net cash used for investing activities totaled $1.2 billion for the successor first nine months of 2017, primarily due to gross property additions related to capital expenditures for infrastructure replacement programs at gas distribution operations and capital contributed to equity method investments in pipelines. Net cash used for investing activities totaled $1.7 billion for the successor period of July 1, 2016 through September 30, 2016 and $559 million for the predecessor period of January 1, 2016 through June 30, 2016 primarily due to gross property additions related to capital expenditures for infrastructure replacement programs at gas distribution operations and the acquisition of Southern Company Gas' ownership interest in SNG in September 2016.
Net cash provided from financing activities totaled $45 million for the successor first nine months of 2017, primarily due to proceeds from debt issuances and capital contributions from Southern Company, partially offset by net repayments of commercial paper borrowings and common stock dividend payments to Southern Company. Net cash provided from (used for) financing activities totaled $2.1 billion for the successor period of July 1, 2016 through September 30, 2016 and $(558) million for the predecessor period of January 1, 2016 through June 30, 2016 primarily due to net repayments of commercial paper borrowings, the redemption of long-term debt, and common stock dividend payments to shareholders, partially offset by proceeds from debt issuances. The successor period of July 1, 2016 through September 30, 2016 also includes capital contributions from Southern Company to fund the investment in SNG. Cash flows from financing activities vary from period to period based on capital needs and the maturity or redemption of securities.

201

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Significant balance sheet changes at September 30, 2017 include an increase of $847 million in total property, plant, and equipment primarily due to capital expenditures for infrastructure replacement programs, an increase in long-term debt of $603 million primarily due to $450 million of senior notes and $200 million of first mortgage bonds at Nicor Gas issued in May 2017 and August 2017, respectively, and a decrease of $323 million in notes payable related primarily to net repayments of commercial paper borrowings at Nicor Gas. Other significant balance sheet changes include an increase of $239 million in accumulated deferred income taxes, primarily as a result of tax depreciation related to infrastructure assets placed in service as well as the impact of State of Illinois tax legislation, and decreases of $196 million and $146 million in energy marketing receivables and payables, respectively, due to lower natural gas prices.
Capital Requirements and Contractual Obligations
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Capital Requirements and Contractual Obligations" of Southern Company Gas in Item 7 of the Form 10-K for a description of Southern Company Gas' capital requirements for its infrastructure programs, scheduled maturities of long-term debt and the related interest, as well as pipeline charges, storage capacity, and gas supply, operating leases, asset management agreements, standby letters of credit and performance/surety bonds, financial derivative obligations, pension and other postretirement benefit plans, and other purchase commitments, primarily related to environmental remediation liabilities. There are no scheduled maturities of long-term debt through September 30, 2018. See "Sources of Capital" herein for additional information.
The regulatory infrastructure programs and other construction programs are subject to periodic review and revision, and actual costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in FERC rules and regulations; state regulatory approvals; changes in legislation; the cost and efficiency of labor, equipment, and materials; project scope and design changes; and the cost of capital. In addition, there can be no assurance that costs related to capital expenditures will be fully recovered. See Note 3 to the consolidated financial statements of Southern Company Gas in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein for information regarding additional factors that may impact infrastructure investment expenditures.
Sources of Capital
Southern Company Gas plans to obtain the funds to meet its future capital needs through operating cash flows, short-term debt borrowings under its commercial paper programs, external securities issuances, and equity contributions from Southern Company. However, the amount, type, and timing of any future financings, if needed, depend upon regulatory approval, prevailing market conditions, and other factors. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" of Southern Company Gas in Item 7 of the Form 10-K for additional information.
At September 30, 2017, Southern Company Gas' current liabilities exceeded current assets by $645 million primarily as a result of $934 million in notes payable. Southern Company Gas' current liabilities frequently exceed current assets because of commercial paper borrowings used to fund daily operations, scheduled maturities of long-term debt, and significant seasonal fluctuations in cash needs. Southern Company Gas intends to utilize operating cash flows, commercial paper, and debt securities issuances, as market conditions permit, as well as equity contributions from Southern Company to fund its short-term capital needs. Southern Company Gas has substantial cash flow from operating activities and access to the capital markets and financial institutions to meet liquidity needs.

202

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


At September 30, 2017, Southern Company Gas had approximately $21 million of cash and cash equivalents. Committed credit arrangements with banks at September 30, 2017 were as follows:
Company Expires 2022 Unused
  (millions)
Southern Company Gas Capital $1,200
 $1,161
Nicor Gas 700
 700
Total $1,900
 $1,861
Additionally, Pivotal Utility Holdings is party to a series of loan agreements with the New Jersey Economic Development Authority and Brevard County, Florida under which five series of gas facility revenue bonds totaling $200 million have been issued.
See Note 6 to the consolidated financial statements of Southern Company Gas under "Bank Credit Arrangements" in Item 8 of the Form 10-K and Note (E) to the Condensed Financial Statements under "Bank Credit Arrangements" herein for additional information.
In May 2017, Southern Company Gas Capital and Nicor Gas terminated their existing credit arrangements for $1.3 billion and $700 million, respectively, which were to mature in 2017 and 2018, and entered into a new multi-year credit arrangement (Facility) currently allocated for $1.2 billion and $700 million, respectively, with a maturity date of 2022, as reflected in the table above. Pursuant to the Facility, the allocations may be adjusted.
The Facility contains a covenant that limits the ratio of debt to capitalization (as defined in each facility) to a maximum of 70% for each of Southern Company Gas and Nicor Gas and contains a cross-acceleration provision to other indebtedness (including guarantee obligations) of the applicable company. Such cross-acceleration provision to other indebtedness would trigger an event of default of the applicable company if Southern Company Gas or Nicor Gas defaulted on indebtedness, the payment of which was then accelerated. At September 30, 2017, both companies were in compliance with such covenant. The Facility does not contain a material adverse change clause at the time of borrowings.
Subject to applicable market conditions, the applicable company expects to renew or replace the Facility as needed, prior to expiration. In connection therewith, the applicable company may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
Southern Company Gas makes short-term borrowings primarily through commercial paper programs that have the liquidity support of the committed bank credit arrangements described above. Commercial paper borrowings are included in notes payable in the balance sheets.
Details of commercial paper borrowings were as follows:
 Commercial Paper at September 30, 2017 
Commercial Paper During the Period(*)
 Amount
Outstanding
 Weighted Average Interest Rate Average Amount Outstanding Weighted Average Interest Rate Maximum Amount Outstanding
Commercial paper:(in millions)   (in millions)   (in millions)
Southern Company Gas Capital$836
 1.5% $680
 1.5% $838
Nicor Gas98
 1.3
 40
 1.3
 120
Total$934
 1.5% $720
 1.5%  
(*)Average and maximum amounts are based upon daily balances during the successor three-month period ended September 30, 2017.
Southern Company Gas believes the need for working capital can be adequately met by utilizing commercial paper programs, lines of credit, and operating cash flows.

203

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Credit Rating Risk
Southern Company Gas does not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change below BBB- and/or Baa3. These contracts are for physical gas purchases and sales and energy price risk management. The maximum potential collateral requirements under these contracts at September 30, 2017 were $12 million.
Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of Southern Company Gas to access capital markets, and would be likely to impact the cost at which it does so.
On March 24, 2017, S&P revised its consolidated credit rating outlook for Southern Company and its subsidiaries (including Southern Company Gas, Southern Company Gas Capital, and Nicor Gas) from stable to negative.
Financing Activities
The long-term debt on Southern Company Gas' consolidated balance sheets includes both principal and non-principal components. As of September 30, 2017, the non-principal components totaled $523 million, which consisted of the unamortized portions of the fair value adjustment recorded in purchase accounting, debt premiums, debt discounts, and debt issuance costs.
In December 2016, Southern Company Gas executed intercompany promissory notes to further allocate interest expense to its reportable segments that previously remained in the "all other" segment. These intercompany promissory notes allow Southern Company Gas to calculate net income, which is its performance measure subsequent to the Merger, at the segment level that incorporates the full impact of interest costs.
In May 2017, Southern Company Gas Capital issued $450 million aggregate principal amount of Series 2017A 4.40% Senior Notes due May 30, 2047. The proceeds were used to repay Southern Company Gas' short-term indebtedness and for general corporate purposes.
In July 2017, Atlanta Gas Light Company repaid at maturity $22 million of Series C medium-term notes.
In July 2017, Nicor Gas agreed to issue $400 million aggregate principal amount of first mortgage bonds in a private placement. On August 10, 2017, Nicor Gas issued $100 million aggregate principal amount of First Mortgage Bonds 3.03% Series due August 10, 2027 and $100 million aggregate principal amount of First Mortgage Bonds 3.62% Series due August 10, 2037. The proceeds were used to repay short-term indebtedness incurred under the Nicor Gas commercial paper program and for other working capital needs. The remaining $200 million is expected to be issued in November 2017.
In addition to any financings that may be necessary to meet capital requirements and contractual obligations, Southern Company Gas plans to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.
Market Price Risk
Other than the items discussed below, there were no material changes to Southern Company Gas' disclosures about market price risk during the successor third quarter and year-to-date 2017. For an in-depth discussion of Southern Company Gas' market price risks, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Market Price Risk" of Southern Company Gas in Item 7 of the Form 10-K. Also see Notes (C) and (H) to the Condensed Financial Statements herein for information relating to derivative instruments.
Southern Company Gas is exposed to market risks, primarily commodity price risk, interest rate risk, and weather risk. Due to various cost recovery mechanisms, the natural gas distribution utilities of Southern Company Gas that sell natural gas directly to end-use customers have limited exposure to market volatility of natural gas prices.

204

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Certain natural gas distribution utilities of Southern Company Gas manage fuel-hedging programs implemented per the guidelines of their respective state regulatory agencies to hedge the impact of market fluctuations in natural gas prices for customers. For the weather risk associated with Nicor Gas, Southern Company Gas has a corporate weather hedging program that utilizes weather derivatives to reduce the risk of lower operating margins potentially resulting from significantly warmer-than-normal weather. In addition, certain non-regulated operations routinely utilize various types of derivative instruments to economically hedge certain commodity price and weather risks inherent in the natural gas industry. These instruments include a variety of exchange-traded and over-the-counter energy contracts, such as forward contracts, futures contracts, options contracts, and swap agreements. Some of these economic hedge activities may not qualify, or are not designated, for hedge accounting treatment. The following table illustrates the change in the net fair value of Southern Company Gas' derivative instruments during all periods presented, and provides details of the net fair value of contracts outstanding as of the dates presented.
  Successor  Predecessor
  Third Quarter Third Quarter Year-to-Date July 1, 2016 through September 30, 2016  January 1, 2016
through
June 30,
2016
  2017 2016 2017   
  (in millions)  (in millions)
Contracts outstanding at beginning of period,
assets (liabilities), net
 $51
 $(54) $12
 $(54)  $75
Contracts realized or otherwise settled (6) (3) (22) (3)  (77)
Current period changes(a)
 (16) 
 39
 
  (82)
Contracts outstanding at the end of period,
assets (liabilities), net
 29
 (57) 29
 (57)  (84)
Netting of cash collateral 76
 111
 76
 111
  120
Cash collateral and net fair value of contracts
outstanding at end of period
(b)
 $105
 $54
 $105
 $54
  $36
(a)Current period changes also include the fair value of new contracts entered into during the period, if any.
(b)Net fair value of derivative instruments outstanding includes premiums and the intrinsic values associated with weather derivatives of $13 million at September 30, 2017 and $7 million at September 30, 2016.
The maturities of Southern Company Gas' energy-related derivative contracts at September 30, 2017 were as follows:
   Fair Value Measurements
   Successor – September 30, 2017
 Total
Fair Value
 Maturity
  Year 1  Years 2 & 3 Years 4 and thereafter
 (in millions)
Level 1(a)
$(35) $(10) $(20) $(5)
Level 2(b)
64
 12
 45
 7
Fair value of contracts outstanding at end of period(c)
$29
 $2
 $25
 $2
(a)Valued using NYMEX futures prices.
(b)Valued using basis transactions that represent the cost to transport natural gas from a NYMEX delivery point to the contract delivery point. These transactions are based on quotes obtained either through electronic trading platforms or directly from brokers.
(c)Excludes cash collateral of $76 million at September 30, 2017.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS
FOR
THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
ALABAMA POWER COMPANY
GEORGIA POWER COMPANY
GULF POWER COMPANY
MISSISSIPPI POWER COMPANY
SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES
(UNAUDITED)


INDEX TO THE NOTES TO THE CONDENSED FINANCIAL STATEMENTS
NotePage Number
A
B
C
D
E
F
G
H
I
J
K





INDEX TO APPLICABLE NOTES TO FINANCIAL STATEMENTS BY REGISTRANT
The following unaudited notes to the condensed financial statements are a combined presentation. The list below indicates the registrants to which each footnote applies.
RegistrantApplicable Notes
Southern CompanyA, B, C, D, E, F, G, H, I, J, K
Alabama PowerA, B, C, E, F, G, H
Georgia PowerA, B, C, E, F, G, H
Gulf PowerA, B, C, E, F, G, H
Mississippi PowerA, B, C, E, F, G, H
Southern PowerA, B, C, D, E, G, H, I
Southern Company GasA, B, C, E, F, G, H, I, J, K


THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES
ALABAMA POWER COMPANY
GEORGIA POWER COMPANY
GULF POWER COMPANY
MISSISSIPPI POWER COMPANY
SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES
SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

NOTES TO THE CONDENSED FINANCIAL STATEMENTS:
(UNAUDITED)

(A)INTRODUCTION
The condensed quarterly financial statements of each registrant included herein have been prepared by such registrant, without audit, pursuant to the rules and regulations of the SEC. The Condensed Balance Sheets as of December 31, 2016 have been derived from the audited financial statements of each registrant. In the opinion of each registrant's management, the information regarding such registrant furnished herein reflects all adjustments, which, except as otherwise disclosed, are of a normal recurring nature, necessary to present fairly the results of operations for the periods ended September 30, 2017 and 2016. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations, although each registrant believes that the disclosures regarding such registrant are adequate to make the information presented not misleading. Disclosures which would substantially duplicate the disclosures in the Form 10-K and details which have not changed significantly in amount or composition since the filing of the Form 10-K are generally omitted from this Quarterly Report on Form 10-Q unless specifically required by GAAP. Therefore, these Condensed Financial Statements should be read in conjunction with the financial statements and the notes thereto included in the Form 10-K. Due to the seasonal variations in the demand for energy, operating results for the periods presented are not necessarily indicative of the operating results to be expected for the full year.
Southern Company's financial statements reflect its investments in its subsidiaries, including Southern Company Gas as a result of the Merger, on a consolidated basis. Southern Company Gas' results of operations and cash flows for the three and nine months ended September 30, 2017 and the three months ended September 30, 2016, as well as its financial condition as of September 30, 2017 and December 31, 2016, are reflected within Southern Company's consolidated amounts in these accompanying notes herein. The equity method is used for entities in which Southern Company has significant influence but does not control, including Southern Company Gas' investment in SNG, and for variable interest entities where Southern Company has an equity investment but is not the primary beneficiary. See Note (I) under "Southern CompanyMerger with Southern Company Gas" for additional information regarding the Merger.
Pursuant to the Merger, Southern Company pushed down the application of the acquisition method of accounting to the consolidated financial statements of Southern Company Gas such that the assets and liabilities are recorded at their respective fair values, and goodwill has been established for the excess of the purchase price over the fair value of net identifiable assets. Accordingly, the consolidated financial statements of Southern Company Gas for periods before and after July 1, 2016 (acquisition date) reflect different bases of accounting, and the financial positions and results of operations of those periods are not comparable. Throughout Southern Company Gas' condensed consolidated financial statements and the accompanying notes herein, periods prior to July 1, 2016 are identified as "predecessor," while periods after the acquisition date are identified as "successor."
Certain prior year data presented in the financial statements have been reclassified to conform to the current year presentation. These reclassifications had no impact on the results of operations, financial position, or cash flows of any registrant.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Recently Issued Accounting Standards
See Note 1 to the financial statements of the registrants under "Recently Issued Accounting Standards" in Item 8 of the Form 10-K for additional information.
In 2014, the FASB issued ASC 606, Revenue from Contracts with Customers (ASC 606), replacing the existing accounting standard and industry specific guidance for revenue recognition with a five-step model for recognizing and measuring revenue from contracts with customers. The underlying principle of the standard is to recognize revenue to depict the transfer of goods or services to customers at the amount expected to be collected. The new standard also requires enhanced disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows arising from contracts with customers.
While the registrants expect most of their revenue to be included in the scope of ASC 606, they have not fully completed the evaluation of all revenue arrangements. The majority of Southern Company's, the traditional electric operating companies', and Southern Company Gas' revenue, including energy provided to customers, is from tariff offerings that provide electricity or natural gas without a defined contractual term, as well as longer-term contractual commitments, including PPAs and non-derivative natural gas asset management and optimization arrangements. The majority of Southern Power's revenues includes longer-term PPAs for generation capacity and energy. The registrants expect the adoption of ASC 606 will not result in a significant shift from the current timing of revenue recognition for such transactions.
The registrants' ongoing evaluation of other revenue streams and related contracts includes unregulated sales to customers. Some revenue arrangements, such as certain PPAs, energy-related derivatives, and alternative revenue programs, are excluded from the scope of ASC 606 and, therefore, will be accounted for and disclosed or presented separately from revenues under ASC 606 on the registrants' financial statements. In addition, the power and utilities industry continues to evaluate other specific industry issues, including the applicability of ASC 606 to contributions in aid of construction (CIAC). Although final implementation guidance has not been issued, Southern Company, the traditional electric operating companies, and Southern Company Gas expect CIAC to be out of the scope of ASC 606.
The new standard is effective for interim and annual reporting periods beginning after December 15, 2017. The registrants intend to use the modified retrospective method of adoption effective January 1, 2018. The registrants have also elected to utilize practical expedients which allow them to apply the standard to open contracts at the date of adoption and to reflect the aggregate effect of all modifications when identifying performance obligations and allocating the transaction price for contracts modified before the effective date. Under the modified retrospective method of adoption, prior year reported results are not restated; however, a cumulative-effect adjustment to retained earnings at January 1, 2018 is recorded. In addition, disclosures will include comparative information on 2018 financial statement line items under current guidance. While the adoption of ASC 606, including the cumulative-effect adjustment, is not expected to have a material impact on either the timing or amount of revenues recognized in the registrants' financial statements, the registrants will continue to evaluate the requirements, as well as any additional clarifying guidance that may be issued.
On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). ASU 2017-04 removes the requirement to compare the implied fair value of goodwill with the carrying amount as part of Step 2 of the goodwill impairment test. Under the new standard, the goodwill impairment loss will be measured as the excess of a reporting unit's carrying amount over its fair value, not exceeding the total amount of goodwill allocated to that reporting unit, which may increase the frequency of goodwill impairment charges if a future goodwill impairment test does not pass the Step 1 evaluation. ASU 2017-04 is effective prospectively for annual and interim periods beginning on or after December 15, 2019, and early adoption is permitted on testing dates after January 1, 2017. Southern Company and Southern Company Gas are evaluating the standard and expect to early adopt ASU 2017-04 effective January 1, 2018.
On March 10, 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

2017-07). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs and requires the other components of net periodic pension and postretirement benefit costs to be separately presented in the income statement outside income from operations. Additionally, only the service cost component is eligible for capitalization, when applicable. However, all cost components remain eligible for capitalization under FERC regulations. ASU 2017-07 will be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension and postretirement benefit costs in the income statement. The capitalization of the service cost component of net periodic pension and postretirement benefit costs in assets will be applied on a prospective basis. ASU 2017-07 is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods. The presentation changes required for net periodic pension and postretirement benefit costs will result in a decrease in Southern Company's, the traditional electric operating companies', and Southern Company Gas' operating income and an increase in other income for 2016 and 2017 and are expected to result in a decrease in operating income and an increase in other income for 2018. The adoption of ASU 2017-07 is not expected to have a material impact on Southern Company's, the traditional electric operating companies', or Southern Company Gas' financial statements.
On August 28, 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), amending the hedge accounting recognition and presentation requirements. ASU 2017-12 makes more financial and non-financial hedging strategies eligible for hedge accounting, amends the related presentation and disclosure requirements, and simplifies hedge effectiveness assessment requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years, with early adoption permitted. The registrants are evaluating the standard and expect to early adopt ASU 2017-12 effective January 1, 2018. The adoption of ASU 2017-12 is not expected to have a material impact on the registrants' financial statements.
Affiliate Transactions
Prior to the completion of Southern Company Gas' acquisition of its 50% equity interest in SNG, SCS (as agent for Alabama Power, Georgia Power, and Southern Power) and Southern Company Gas had entered into long-term interstate natural gas transportation agreements with SNG. The interstate transportation service provided to Alabama Power, Georgia Power, Southern Power, and Southern Company Gas by SNG pursuant to these agreements is governed by the terms and conditions of SNG's natural gas tariff and is subject to FERC regulation. For the nine months ended September 30, 2017, transportation costs under these agreements for Alabama Power, Georgia Power, Southern Power, and Southern Company Gas were approximately $8 million, $77 million, $19 million, and $24 million, respectively. For the period subsequent to Southern Company Gas' investment in SNG through September 30, 2016, transportation costs under these agreements for Alabama Power, Georgia Power, Southern Power, and Southern Company Gas were approximately $1 million, $8 million, $2 million, and $4 million, respectively.
SCS, as agent for Georgia Power and Southern Power, has agreements with certain subsidiaries of Southern Company Gas to purchase natural gas. For the nine months ended September 30, 2017, natural gas purchases made by Georgia Power and Southern Power from Southern Company Gas' subsidiaries were approximately $18 million and $94 million, respectively. For the period subsequent to Southern Company's acquisition of Southern Company Gas through September 30, 2016, natural gas purchases made by Georgia Power and Southern Power from Southern Company Gas' subsidiaries were approximately $7 million and $2 million, respectively.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Goodwill and Other Intangible Assets
At September 30, 2017 and December 31, 2016, goodwill was as follows:
 Goodwill
 At September 30, 2017At December 31, 2016
 (in millions)
Southern Company$6,267
$6,251
Southern Power$2
$2
Southern Company Gas  
Gas distribution operations$4,702
$4,702
Gas marketing services1,265
1,265
Southern Company Gas total$5,967
$5,967
Goodwill is not amortized, but is subject to an annual impairment test during the fourth quarter of each year, or more frequently if impairment indicators arise.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Other intangible assets were as follows:
 At September 30, 2017 At December 31, 2016
 Gross Carrying AmountAccumulated Amortization
Other
Intangible Assets, Net
 Gross Carrying AmountAccumulated AmortizationOther
Intangible Assets, Net
 (in millions) (in millions)
Southern Company       
Other intangible assets subject to amortization:       
Customer relationships$288
$(70)$218
 $268
$(32)$236
Trade names159
(15)144
 158
(5)153
Storage and transportation contracts64
(27)37
 64
(2)62
PPA fair value adjustments456
(41)415
 456
(22)434
Other16
(3)13
 11
(1)10
Total other intangible assets subject to amortization$983
$(156)$827

$957
$(62)$895
Other intangible assets not subject to amortization:       
Federal Communications Commission licenses$75
$
$75
 $75
$
$75
Total other intangible assets$1,058
$(156)$902
 $1,032
$(62)$970
        
Southern Power       
Other intangible assets subject to amortization:       
PPA fair value adjustments$456
$(41)$415
 $456
$(22)$434
        
Southern Company Gas       
Other intangible assets subject to amortization:       
Gas marketing services       
Customer relationships$221
$(65)$156
 $221
$(30)$191
Trade names115
(8)107
 115
(2)113
Wholesale gas services       
Storage and transportation contracts64
(27)37
 64
(2)62
Total other intangible assets subject to amortization$400
$(100)$300
 $400
$(34)$366

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Amortization associated with other intangible assets was as follows:
 Three Months EndedNine Months Ended
 September 30, 2017
 (in millions)
Southern Company$29
$94
Southern Power$6
$19
Southern Company Gas$20
$66
See Note 12 to the financial statements of Southern Company under "Southern Power" and Note 2 to the financial statements of Southern Power in Item 8 of the Form 10-K for additional information regarding Southern Power's PPA fair value adjustments related to its business acquisitions. Also see Note (I) under "Southern CompanyAcquisition of PowerSecure" and " Merger with Southern Company Gas" for additional information.
Property Damage Reserve
See Note 1 to the financial statements of Gulf Power under "Property Damage Reserve" in Item 8 of the Form 10-K for additional information.
Gulf Power's cost of repairing damages from major storms and other uninsured property damages, including uninsured damages to transmission and distribution facilities, generation facilities, and other property is charged to Gulf Power's property damage reserve. In accordance with a settlement agreement approved by the Florida PSC on April 4, 2017 (2017 Rate Case Settlement Agreement), Gulf Power suspended further property damage reserve accruals effective April 2017. Gulf Power may make discretionary accruals and is required to resume accruals of $3.5 million annually if the reserve balance falls below zero. In addition, Gulf Power may initiate a storm surcharge to recover costs associated with any tropical systems named by the National Hurricane Center or other catastrophic storm events that reduce the property damage reserve in the aggregate by approximately $31 million (75% of the April 1, 2017 balance) or more. The storm surcharge would begin, on an interim basis, 60 days following the filing of a cost recovery petition, would be limited to $4.00/month for a 1,000 KWH residential customer unless Gulf Power incurs in excess of $100 million in qualified storm recovery costs in a calendar year, and would replenish the property damage reserve to approximately $40 million. As of September 30, 2017, Gulf Power's property damage reserve totaled approximately $39 million. See Note (B) under "Regulatory MattersGulf PowerRetail Base Rate Cases" for additional details regarding the 2017 Rate Case Settlement Agreement.
Natural Gas for Sale
Southern Company Gas' natural gas distribution utilities, with the exception of Nicor Gas, carry natural gas inventory on a WACOG basis.
Nicor Gas' natural gas inventory is carried at cost on a LIFO basis. Inventory decrements occurring during the year that are restored prior to year end are charged to cost of natural gas at the estimated annual replacement cost. Inventory decrements that are not restored prior to year end are charged to cost of natural gas at the actual LIFO cost of the inventory layers liquidated. Southern Company Gas had no inventory decrement at September 30, 2017. The cost of natural gas, including inventory costs, is recovered from customers under a purchased gas recovery mechanism adjusted for differences between actual costs and amounts billed; therefore, LIFO liquidations have no impact on Southern Company's or Southern Company Gas' net income.
Natural gas inventories for Southern Company Gas' non-utility businesses are carried at the lower of weighted average cost or current market price, with cost determined on a WACOG basis. For any declines in market prices below the WACOG considered to be other than temporary, an adjustment is recorded to reduce the value of natural gas inventories to market value. Southern Company Gas had no material LOCOM adjustment in any period presented.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
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(B)CONTINGENCIES AND REGULATORY MATTERS
See Note 3 to the financial statements of the registrants in Item 8 of the Form 10-K for information relating to various lawsuits, other contingencies, and regulatory matters.
General Litigation Matters
Each registrant is subject to certain claims and legal actions arising in the ordinary course of business. In addition, the business activities of Southern Company's subsidiaries are subject to extensive governmental regulation related to public health and the environment, such as regulation of air emissions and water discharges. Litigation over environmental issues and claims of various types, including property damage, personal injury, common law nuisance, and citizen enforcement of environmental requirements such as air quality and water standards, has occurred throughout the U.S. This litigation has included claims for damages alleged to have been caused by CO2 and other emissions, CCR, and alleged exposure to hazardous materials, and/or requests for injunctive relief in connection with such matters.
The ultimate outcome of such pending or potential litigation against each registrant and any subsidiaries cannot be predicted at this time; however, for current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on such registrant's financial statements.
Southern Company
On January 20, 2017, a purported securities class action complaint was filed against Southern Company, certain of its officers, and certain former Mississippi Power officers in the U.S. District Court for the Northern District of Georgia, Atlanta Division, by Monroe County Employees' Retirement System on behalf of all persons who purchased shares of Southern Company's common stock between April 25, 2012 and October 29, 2013. The complaint alleges that Southern Company, certain of its officers, and certain former Mississippi Power officers made materially false and misleading statements regarding the Kemper IGCC in violation of certain provisions under the Securities Exchange Act of 1934, as amended. The complaint seeks, among other things, compensatory damages and litigation costs and attorneys' fees. On June 12, 2017, the plaintiffs filed an amended complaint that provided additional detail about their claims, increased the purported class period by one day, and added certain other former Mississippi Power officers as defendants. On July 27, 2017, the defendants filed a motion to dismiss the plaintiffs' amended complaint with prejudice, to which the plaintiffs filed an opposition on September 11, 2017.
On February 27, 2017, Jean Vineyard filed a shareholder derivative lawsuit in the U.S. District Court for the Northern District of Georgia that names as defendants Southern Company, certain of its directors, certain of its officers, and certain former Mississippi Power officers. The complaint alleges that the defendants caused Southern Company to make false or misleading statements regarding the Kemper IGCC cost and schedule. Further, the complaint alleges that the defendants were unjustly enriched and caused the waste of corporate assets. The plaintiff seeks to recover, on behalf of Southern Company, unspecified actual damages and, on her own behalf, attorneys' fees and costs in bringing the lawsuit. The plaintiff also seeks certain changes to Southern Company's corporate governance and internal processes. On March 27, 2017, the court deferred this lawsuit until 30 days after certain further action in the purported securities class action complaint discussed above.
On May 15, 2017, Helen E. Piper Survivor's Trust filed a shareholder derivative lawsuit in the Superior Court of Gwinnett County, State of Georgia and, on May 31, 2017, Judy Mesirov filed a shareholder derivative lawsuit in the U.S. District Court for the Northern District of Georgia. Each of these lawsuits names as defendants Southern Company, certain of its directors, certain of its officers, and certain former Mississippi Power officers. Each complaint alleges that the individual defendants, among other things, breached their fiduciary duties in connection with schedule delays and cost overruns associated with the construction of the Kemper IGCC. Each complaint further alleges that the individual defendants authorized or failed to correct false and misleading statements regarding the Kemper IGCC schedule and cost and failed to implement necessary internal controls to prevent harm to Southern Company. Each plaintiff seeks to recover, on behalf of Southern Company, unspecified actual damages

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
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and disgorgement of profits and, on its behalf, attorneys' fees and costs in bringing the lawsuit. Each plaintiff also seeks certain unspecified changes to Southern Company's corporate governance and internal processes. On August 15, 2017, these two shareholder derivative lawsuits were consolidated in the U.S. District Court for the Northern District of Georgia and the court deferred the consolidated case until 30 days after certain further action in the purported securities class action complaint discussed above.
Southern Company believes these legal challenges have no merit; however, an adverse outcome in any of these proceedings could have an impact on Southern Company's results of operations, financial condition, and liquidity. Southern Company will vigorously defend itself in these matters, the ultimate outcome of which cannot be determined at this time.
Georgia Power
In 2011, plaintiffs filed a putative class action against Georgia Power in the Superior Court of Fulton County, Georgia alleging that Georgia Power's collection in rates of municipal franchise fees (all of which are remitted to municipalities) exceeded the amounts allowed in orders of the Georgia PSC and alleging certain state tort law claims. In November 2016, the Georgia Court of Appeals reversed the trial court's previous dismissal of the case and remanded the case to the trial court for further proceedings. Georgia Power filed a petition for writ of certiorari with the Georgia Supreme Court, which was granted on August 28, 2017. A decision from the Georgia Supreme Court is not expected until 2018. Georgia Power believes the plaintiffs' claims have no merit and intends to vigorously defend itself in this matter. The ultimate outcome of this matter cannot be determined at this time.
Southern Power
During 2015, Southern Power indirectly acquired a 51% membership interest in RE Roserock LLC (Roserock), the owner of the Roserock facility in Pecos County, Texas, which was under construction by Recurrent Energy, LLC and was subsequently placed in service in November 2016. Prior to placing the facility in service, certain solar panels were damaged during installation. While the facility currently is generating energy consistent with operational expectations and PPA obligations, Southern Power is pursuing remedies under its insurance policies and other contracts to repair or replace these solar panels. In connection therewith, Southern Power is withholding payments of approximately $26 million from the construction contractor, who has placed a lien on the Roserock facility for the same amount. The amounts withheld are included in other accounts and notes payable and other current liabilities on Southern Company's consolidated balance sheets and other accounts payable and other current liabilities on Southern Power's consolidated balance sheets. On May 18, 2017, Roserock filed a lawsuit in the state district court in Pecos County, Texas, against X.L. America, Inc. (XL) and North American Elite Insurance Company (North American Elite) seeking recovery from an insurance policy for damages resulting from a hail storm and certain installation practices by the construction contractor, McCarthy Building Companies, Inc. (McCarthy). On May 19, 2017, Roserock filed a separate lawsuit against McCarthy in the state district court in Travis County, Texas alleging breach of contract and breach of warranty for the damages sustained at the Roserock facility, which has since been moved to the U.S. District Court for the Western District of Texas. On May 22, 2017, McCarthy filed a counter lawsuit against Roserock, Array Technologies, Inc., Canadian Solar (USA), Inc., XL, and North American Elite in the U.S. District Court for the Western District of Texas alleging, among other things, breach of contract, and requesting foreclosure of mechanic's liens against Roserock. On July 18, 2017, the U.S. District Court for the Western District of Texas consolidated the two pending lawsuits. Southern Power intends to vigorously pursue and defend these matters, the ultimate outcome of which cannot be determined at this time.
Southern Company Gas
Nicor Gas and Nicor Energy Services Company, wholly-owned subsidiaries of Southern Company Gas, and Nicor Inc. were defendants in a putative class action initially filed in 2011 in the state court in Cook County, Illinois. The plaintiffs purported to represent a class of the customers who purchased the Gas Line Comfort Guard product from Nicor Energy Services Company and variously alleged that the marketing, sale, and billing of the Gas Line Comfort Guard product violated the Illinois Consumer Fraud and Deceptive Business Practices Act, constituting common law fraud and resulting in unjust enrichment of these entities. The plaintiffs sought, on behalf of the classes they

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

purported to represent, actual and punitive damages, interest, costs, attorney fees, and injunctive relief. On February 8, 2017, the judge denied the plaintiffs' motion for class certification and Southern Company Gas' motion for summary judgment. On March 7, 2017, the parties reached a settlement, which was finalized and effective on April 3, 2017. The settlement did not have a material impact on Southern Company's or Southern Company Gas' financial statements.
Environmental Matters
Environmental Remediation
The Southern Company system must comply with environmental laws and regulations that cover the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the natural gas distribution utilities in Illinois, New Jersey, Georgia, and Florida have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental compliance costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.
Georgia Power's environmental remediation liability was $26 million and $17 million as of September 30, 2017 and December 31, 2016, respectively. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such sites is expected.
Gulf Power's environmental remediation liability includes estimated costs of environmental remediation projects of approximately $53 million and $44 million as of September 30, 2017 and December 31, 2016, respectively. These estimated costs primarily relate to site closure criteria by the Florida Department of Environmental Protection (FDEP) for potential impacts to soil and groundwater from herbicide applications at Gulf Power's substations. The schedule for completion of the remediation projects is subject to FDEP approval. The projects have been approved by the Florida PSC for recovery through Gulf Power's environmental cost recovery clause; therefore, these liabilities have no impact on net income.
Southern Company Gas' environmental remediation liability was $399 million and $426 million as of September 30, 2017 and December 31, 2016, respectively, based on the estimated cost of environmental investigation and remediation associated with known current and former manufactured gas plant operating sites. These environmental remediation expenditures are recoverable from customers through rate mechanisms approved by the applicable state regulatory agencies of the natural gas distribution utilities, with the exception of one site representing $5 million of the total accrued remediation costs.
The final outcome of these matters cannot be determined at this time. However, the final disposition of these matters is not expected to have a material impact on the financial statements of Southern Company, Georgia Power, Gulf Power, or Southern Company Gas.
Natural Gas Storage
A wholly-owned subsidiary of Southern Company Gas owns and operates a natural gas storage facility consisting of two salt dome caverns in Louisiana. Periodic integrity tests are required in accordance with rules of the Louisiana Department of Natural Resources (LDNR). In August 2017, in connection with an ongoing integrity project, updated seismic mapping indicated the proximity of one of the caverns to the edge of the salt dome may be less than the required minimum and could result in Southern Company Gas retiring the cavern early. At September 30, 2017, the facility's property, plant, and equipment had a net book value of $111 million, of which the cavern itself represents approximately 20%. A potential early retirement of this cavern is dependent upon several factors including the results of ongoing third-party technical engineering reviews, testing, and compliance with an order from the LDNR detailing the requirements to place the cavern back in service, which includes, among other things, obtaining a core sample to determine the composition of the sheath surrounding the edge of the salt dome. Early retirement of the cavern could trigger impairment of other long-lived assets associated with the natural gas storage

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

facility. The ultimate outcome of this matter cannot be determined at this time, but could have a significant impact on Southern Company's financial statements and a material impact on Southern Company Gas' financial statements.
Nuclear Fuel Disposal Costs
See Note 3 to the financial statements of Southern Company, Alabama Power, and Georgia Power under "Nuclear Fuel Disposal Costs" in Item 8 of the Form 10-K for additional information regarding legal remedies pursued by Alabama Power and Georgia Power against the U.S. government for its partial breach of contract relating to the disposal of spent nuclear fuel and high level radioactive waste generated at each company's nuclear plants.
On October 10, 2017, Alabama Power and Georgia Power filed additional lawsuits against the U.S. government in the Court of Federal Claims for the costs of continuing to store spent nuclear fuel at Plant Farley, Plant Hatch, and Plant Vogtle Units 1 and 2 for the period from January 1, 2015 through December 31, 2017. Damages will continue to accumulate until the issue is resolved or storage is provided. No amounts have been recognized in the financial statements as of September 30, 2017 for any potential recoveries from the additional lawsuits. The final outcome of these matters cannot be determined at this time; however, no material impact on Southern Company's, Alabama Power's, or Georgia Power's net income is expected.
FERC Matters
Municipal and Rural Associations Tariff
See Note 3 to the financial statements of Mississippi Power under "FERC Matters" in Item 8 of the Form 10-K for additional information regarding a settlement agreement entered into by Mississippi Power regarding the establishment of a regulatory asset for Kemper IGCC-related costs. See "Integrated Coal Gasification Combined Cycle" herein for information regarding the Kemper IGCC.
In March 2016, Mississippi Power reached a settlement agreement with its wholesale customers, which was subsequently approved by the FERC, for an increase in wholesale base revenues under the MRA cost-based electric tariff, primarily as a result of placing scrubbers for Plant Daniel Units 1 and 2 in service in 2015. The settlement agreement became effective for services rendered beginning May 1, 2016, resulting in an estimated annual revenue increase of $7 million under the MRA cost-based electric tariff. Additionally, under the settlement agreement, the tariff customers agreed to similar regulatory treatment for MRA tariff ratemaking as the treatment approved for retail ratemaking through an order issued by the Mississippi PSC in December 2015 (In-Service Asset Rate Order). This regulatory treatment primarily includes (i) recovery of the Kemper IGCC assets currently operational and providing service to customers and other related costs, (ii) amortization of the Kemper IGCC-related regulatory assets included in rates under the settlement agreement over the 36 months ending April 30, 2019, (iii) Kemper IGCC-related expenses included in rates under the settlement agreement no longer being deferred and charged to expense, and (iv) removing all of the Kemper IGCC CWIP from rate base with a corresponding increase in accrual of AFUDC. The additional resulting AFUDC totaled approximately $22 million through the suspension of Kemper IGCC start-up activities.
See "Integrated Coal Gasification Combined Cycle" herein for additional information.
Fuel Cost Recovery
Mississippi Power has a wholesale MRA and a Market Based (MB) fuel cost recovery factor. At September 30, 2017, the amount of over-recovered wholesale MRA fuel costs included in the balance sheets was $3 million compared to $13 million at December 31, 2016. Over-recovered wholesale MB fuel costs included in the balance sheets were immaterial at September 30, 2017 and December 31, 2016.
See Note 3 to the financial statements of Mississippi Power under "FERC Matters Fuel Cost Recovery" in Item 8 of the Form 10-K for additional information.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
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Market-Based Rate Authority
See Note 3 to the financial statements of Southern Company and Mississippi Power under "FERC Matters Market-Based Rate Authority" and Note 3 to the financial statements of Alabama Power, Georgia Power, Gulf Power, and Southern Power under "FERC Matters" in Item 8 of the Form 10-K for additional information regarding the traditional electric operating companies' and Southern Power's market power proceeding and amendment to their market-rate tariff.
On May 17, 2017, the FERC accepted the traditional electric operating companies' and Southern Power's compliance filing accepting the terms of the FERC's February 2, 2017 order regarding an amendment by the traditional electric operating companies and Southern Power to their market-based rate tariff. While the FERC's order references the traditional electric operating companies' and Southern Power's market power proceeding related to their 2014 triennial updated market power analysis, that proceeding remains a separate, ongoing matter.
On October 25, 2017, the FERC issued an order in response to the traditional electric operating companies' and Southern Power's June 30, 2017 triennial updated market power analysis. The FERC directed the traditional electric operating companies and Southern Power to show cause within 60 days why market-based rate authority should not be revoked in certain areas adjacent to the area presently under mitigation in accordance with the February 2, 2017 order, or to provide a mitigation plan to further address market power concerns. The traditional electric operating companies and Southern Power expect to make a filing within the specified 60 days responding to the FERC's order.
The ultimate outcome of these matters cannot be determined at this time.
Regulatory Matters
Alabama Power
See Note 3 to the financial statements of Southern Company and Alabama Power under "Regulatory Matters Alabama Power" and "Retail Regulatory Matters," respectively, in Item 8 of the Form 10-K for additional information regarding Alabama Power's recovery of retail costs through various regulatory clauses and accounting orders. The balance of each regulatory clause recovery on the balance sheet follows:
Regulatory ClauseBalance Sheet Line ItemSeptember 30,
2017
December 31,
2016


(in millions)
Rate CNP ComplianceDeferred over recovered regulatory clause revenues$9
$
Rate CNP Compliance(*)
Deferred under recovered regulatory clause revenues
9
Rate CNP PPADeferred under recovered regulatory clause revenues17
142
Retail Energy Cost Recovery(*)
Other regulatory liabilities, current
76
Natural Disaster ReserveOther regulatory liabilities, deferred51
69
(*)In accordance with an accounting order issued on February 17, 2017 by the Alabama PSC, Alabama Power reclassified $36 million of its under recovered balance for Rate CNP Compliance and $11 million of its under recovered balance for Retail Energy Cost Recovery to a deferred regulatory asset account.
Georgia Power
Rate Plans
See Note 3 to the financial statements of Southern Company and Georgia Power under "Regulatory Matters – Georgia Power – Rate Plans" and "Retail Regulatory Matters – Rate Plans," respectively, in Item 8 of the Form 10-K for additional information.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
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Georgia Power's revenues from regulated retail operations are collected through various rate mechanisms subject to the oversight of the Georgia PSC. Georgia Power currently recovers its costs from the regulated retail business through the 2013 ARP, which includes traditional base tariff rates, Demand-Side Management tariffs, Environmental Compliance Cost Recovery tariffs, and Municipal Franchise Fee tariffs. In addition, financing costs related to the construction of Plant Vogtle Units 3 and 4 are being collected through the NCCR tariff and fuel costs are collected through a separate fuel cost recovery tariff. See "Nuclear Construction" herein and Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Nuclear Construction" and Georgia Power under "Retail Regulatory Matters – Nuclear Construction" in Item 8 of the Form 10-K for additional information regarding the NCCR tariff. Also see "Fuel Cost Recovery" herein and Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Fuel Cost Recovery" and Georgia Power under "Retail Regulatory Matters – Fuel Cost Recovery" in Item 8 of the Form 10-K for additional information regarding fuel cost recovery.
Integrated Resource Plan
See Note 3 to the financial statements of Southern Company and Georgia Power under "Regulatory Matters – Georgia Power – Integrated Resource Plan" and "Retail Regulatory Matters – Integrated Resource Plan," respectively, in Item 8 of the Form 10-K for additional information regarding Georgia Power's triennial Integrated Resource Plan.
On March 7, 2017, the Georgia PSC approved Georgia Power's decision to suspend work at a future generation site in Stewart County, Georgia, due to changing economics, including load forecasts and lower fuel costs. The timing of recovery for costs incurred of approximately $50 million will be determined by the Georgia PSC in a future base rate case. The ultimate outcome of this matter cannot be determined at this time.
Fuel Cost Recovery
See Note 3 to the financial statements of Southern Company and Georgia Power under "Regulatory Matters – Georgia Power – Fuel Cost Recovery" and "Retail Regulatory Matters – Fuel Cost Recovery," respectively, in Item 8 of the Form 10-K for additional information.
As of September 30, 2017, Georgia Power's under recovered fuel balance totaled $100 million and is included in current assets and other deferred charges and assets on Southern Company's and Georgia Power's condensed balance sheets. As of December 31, 2016, Georgia Power's over recovered fuel balance totaled $84 million and is included in other current liabilities on Southern Company's and Georgia Power's condensed balance sheets.
Fuel cost recovery revenues are adjusted for differences in actual recoverable fuel costs and amounts billed in current regulated rates. Accordingly, changes in the billing factor will not have a significant effect on Southern Company's or Georgia Power's revenues or net income, but will affect cash flow.
Storm Damage Recovery
Georgia Power is accruing $30 million annually through December 31, 2019, as provided in the 2013 ARP, for incremental operating and maintenance costs of damage from major storms to its transmission and distribution facilities. During September 2017, Hurricane Irma caused significant damage to Georgia Power's transmission and distribution facilities. The total amount of incremental restoration costs related to this hurricane is estimated to be approximately $150 million. As of September 30, 2017, Georgia Power had deferred approximately $145 million in a regulatory asset related to storm damage. As of September 30, 2017, the total balance in Georgia Power's regulatory asset related to storm damage was $360 million. The rate of storm damage cost recovery is expected to be adjusted as part of Georgia Power's next base rate case required to be filed by July 1, 2019. As a result of this regulatory treatment, costs related to storms are not expected to have a material impact on Southern Company's or Georgia Power's financial statements. See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Georgia Power – Storm Damage Recovery" and Note 1 to the financial statements of Georgia Power under "Storm Damage Recovery" in Item 8 of the Form 10-K for additional information regarding Georgia Power's storm damage reserve.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Nuclear Construction
See Note 3 to the financial statements of Southern Company and Georgia Power under "Regulatory Matters – Georgia Power – Nuclear Construction" and "Retail Regulatory Matters – Nuclear Construction," respectively, in Item 8 of the Form 10-K for additional information regarding Georgia Power's construction of Plant Vogtle Units 3 and 4, Vogtle Construction Monitoring (VCM) reports, the NCCR tariff, and the Contractor Settlement Agreement.
Vogtle 3 and 4 Agreement and EPC Contractor Bankruptcy
In 2008, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into the Vogtle 3 and 4 Agreement, pursuant to which the EPC Contractor agreed to design, engineer, procure, construct, and test Plant Vogtle Units 3 and 4. Under the terms of the Vogtle 3 and 4 Agreement, the Vogtle Owners agreed to pay a purchase price subject to certain price escalations and adjustments, including fixed escalation amounts and index-based adjustments, as well as adjustments for change orders, and performance bonuses for early completion and unit performance. Georgia Power's proportionate share of Plant Vogtle Units 3 and 4 is 45.7%.
The Vogtle 3 and 4 Agreement also provided for liquidated damages upon the EPC Contractor's failure to fulfill the schedule and certain performance guarantees, each subject to an aggregate cap of 10% of the contract price, or approximately $920 million (approximately $420 million based on Georgia Power's ownership interest). Under the Toshiba Guarantee, Toshiba guaranteed certain payment obligations of the EPC Contractor, including any liability of the EPC Contractor for abandonment of work. In January 2016, Westinghouse delivered to the Vogtle Owners $920 million of letters of credit from financial institutions (Westinghouse Letters of Credit) to secure a portion of the EPC Contractor's potential obligations under the Vogtle 3 and 4 Agreement. The Westinghouse Letters of Credit are subject to annual renewals through June 30, 2020 and require 60 days' written notice to Georgia Power in the event the Westinghouse Letters of Credit will not be renewed.
Under the terms of the Vogtle 3 and 4 Agreement, the EPC Contractor did not have the right to terminate the Vogtle 3 and 4 Agreement for convenience. In the event of an abandonment of work by the EPC Contractor, the maximum liability of the EPC Contractor under the Vogtle 3 and 4 Agreement was 40% of the contract price (approximately $1.7 billion based on Georgia Power's ownership interest).
On March 29, 2017, the EPC Contractor filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. To provide for a continuation of work at Plant Vogtle Units 3 and 4, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into an interim assessment agreement with the EPC Contractor (Interim Assessment Agreement), which the bankruptcy court approved on March 30, 2017.
The Interim Assessment Agreement provided, among other items, that during the term of the Interim Assessment Agreement Georgia Power was obligated to pay, on behalf of the Vogtle Owners, all costs accrued by the EPC Contractor for subcontractors and vendors for services performed or goods provided. The Interim Assessment Agreement, as amended, expired on July 27, 2017.
Subsequent to the EPC Contractor bankruptcy filing, a number of subcontractors to the EPC Contractor, including Fluor Enterprises, Inc., a subsidiary of Fluor Corporation, alleged non-payment by the EPC Contractor for amounts owed for work performed on Plant Vogtle Units 3 and 4. Georgia Power, acting for itself and as agent for the Vogtle Owners, has taken, and continues to take, actions to remove liens filed by these subcontractors through the posting of surety bonds. Georgia Power estimates the aggregate liability, through September 30, 2017, of the Vogtle Owners for the removal of subcontractor liens and payment of other EPC Contractor pre-petition accounts payable to total approximately $386 million, of which $340 million had been paid or accrued as of September 30, 2017. Georgia Power's proportionate share of this aggregate liability totaled approximately $176 million.
On June 9, 2017, Georgia Power and the other Vogtle Owners and Toshiba entered into a settlement agreement regarding the Toshiba Guarantee (Guarantee Settlement Agreement). Pursuant to the Guarantee Settlement Agreement, Toshiba acknowledged the amount of its obligation under the Toshiba Guarantee is $3.68 billion (Guarantee Obligations), of which Georgia Power's proportionate share is approximately $1.7 billion, and that the Guarantee Obligations exist regardless of whether Plant Vogtle Units 3 and 4 are completed. The Guarantee

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
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Settlement Agreement also provides for a schedule of payments for the Guarantee Obligations, which will reduce CWIP, beginning in October 2017 and continuing through January 2021. In the event Toshiba receives certain payments, including sale proceeds, from or related to Westinghouse (or its subsidiaries) or Toshiba Nuclear Energy Holdings (UK) Limited (or its subsidiaries), it will hold a portion of such payments in trust for the Vogtle Owners and promptly pay them as offsets against any remaining Guarantee Obligations. Under the Guarantee Settlement Agreement, the Vogtle Owners will forbear from exercising certain remedies, including drawing on the Westinghouse Letters of Credit, until June 30, 2020, unless certain events of nonpayment, insolvency, or other material breach of the Guarantee Settlement Agreement by Toshiba occur. If such an event occurs, the balance of the Guarantee Obligations will become immediately due and payable, and the Vogtle Owners may exercise any and all rights and remedies, including drawing on the Westinghouse Letters of Credit without restriction. In addition, the Guarantee Settlement Agreement does not restrict the Vogtle Owners from fully drawing on the Westinghouse Letters of Credit in the event they are not renewed or replaced prior to the expiration date. On October 2, 2017, Georgia Power received the first installment of the Guarantee Obligations of $300 million from Toshiba, of which Georgia Power's proportionate share was $137 million. Georgia Power is considering potential options with respect to its right to future payments under the Guarantee Settlement Agreement and its claims against the EPC Contractor in the EPC Contractor's bankruptcy proceeding, including a potential sale of those payment rights and bankruptcy claims. Any such transaction cannot be assured and would be subject to DOE consents and related approvals under the Loan Guarantee Agreement and related agreements.
On August 10, 2017, Toshiba released its financial results for the quarter ended June 30, 2017, which reflected a negative shareholders' equity balance of approximately $4.5 billion as of June 30, 2017. Toshiba previously announced the existence of material events and conditions that raise substantial doubt about Toshiba's ability to continue as a going concern. As a result, substantial risk regarding the Vogtle Owners' ability to fully collect the Guarantee Obligations continues to exist. An inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4 and, therefore, on Southern Company's and Georgia Power's financial statements.
Additionally, on June 9, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, and the EPC Contractor entered into a services agreement (Services Agreement), which was amended and restated on July 20, 2017, for the EPC Contractor to transition construction management of Plant Vogtle Units 3 and 4 to Southern Nuclear and to provide ongoing design, engineering, and procurement services to Southern Nuclear. On July 20, 2017, the bankruptcy court approved the EPC Contractor's motion seeking authorization to (i) enter into the Services Agreement, (ii) assume and assign to the Vogtle Owners certain project-related contracts, (iii) join the Vogtle Owners as counterparties to certain assumed project-related contracts, and (iv) reject the Vogtle 3 and 4 Agreement. The Services Agreement, and the EPC Contractor's rejection of the Vogtle 3 and 4 Agreement, became effective upon approval by the DOE on July 27, 2017. The Services Agreement will continue until the start-up and testing of Plant Vogtle Units 3 and 4 is complete and electricity is generated and sold from both units. The Services Agreement is terminable by the Vogtle Owners upon 30 days' written notice.
Effective October 23, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, entered into a construction completion agreement (Bechtel Agreement) with Bechtel Power Corporation (Bechtel), whereby Bechtel will serve as the primary contractor for the remaining construction activities for Plant Vogtle Units 3 and 4. Facility design and engineering remains the responsibility of the EPC Contractor under the Services Agreement. The Bechtel Agreement is a cost reimbursable plus fee arrangement, whereby Bechtel will be reimbursed for actual costs plus a fee and an at-risk fee, which is subject to adjustment based on Bechtel's performance against cost and schedule targets. Each Vogtle Owner is severally (not jointly) liable for its proportionate share, based on its ownership interest, of all amounts owed to Bechtel under the Bechtel Agreement. The Vogtle Owners may terminate the Bechtel Agreement at any time for their convenience, provided that the Vogtle Owners will be required to pay amounts related to work performed prior to the termination (including the applicable portion of the base fee), certain termination-related costs, and, at certain stages of the work, the at-risk fee. Bechtel may terminate the Bechtel Agreement under certain circumstances, including certain Vogtle Owner suspensions of work, certain breaches of

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

the Bechtel Agreement by the Vogtle Owners, Vogtle Owner insolvency, and certain other events. Pursuant to the Loan Guarantee Agreement, Georgia Power is required to obtain the DOE's approval of the Bechtel Agreement prior to obtaining any further advances under the Loan Guarantee Agreement.
In connection with the recommendation to continue with construction of Plant Vogtle Units 3 and 4 (described below), the Vogtle Owners agreed on a term sheet to amend the existing joint ownership agreements to provide for additional Vogtle Owner approval requirements. Under the term sheet, the holders of at least 90% of the ownership interests in Plant Vogtle Units 3 and 4 must vote to continue construction if certain adverse events occur, including (i) the bankruptcy of Toshiba or a material breach by Toshiba of the Guarantee Settlement Agreement; (ii) termination or rejection in bankruptcy of certain agreements, including the Services Agreement or the Bechtel Agreement; (iii) the Georgia PSC determines that any of Georgia Power's costs relating to the construction of Plant Vogtle Units 3 and 4 will not be recovered in retail rates because such costs are deemed unreasonable or imprudent; or (iv) an increase in the construction budget contained in the seventeenth VCM report by more than $1 billion or extension of the project schedule contained in the seventeenth VCM report by more than one year. In addition, under the term sheet, the required approval of holders of ownership interests in Plant Vogtle Units 3 and 4 is at least (i) 90% for a change of the primary construction contractor and (ii) 67% for material amendments to the Services Agreement or agreements with the primary construction contractor or Southern Nuclear.
The term sheet also confirms that the Vogtle Owners' sole recourse against Georgia Power or Southern Nuclear for any action or inaction in connection with their performance as agent for the Vogtle Owners is limited to removal of Georgia Power and/or Southern Nuclear as agent, except in cases of willful misconduct.
The ultimate outcome of these matters cannot be determined at this time.
Regulatory Matters
In 2009, the Georgia PSC voted to certify construction of Plant Vogtle Units 3 and 4 with a certified capital cost of $4.418 billion. In addition, in 2009 the Georgia PSC approved inclusion of the Plant Vogtle Units 3 and 4 related CWIP accounts in rate base, and the State of Georgia enacted the Georgia Nuclear Energy Financing Act, which allows Georgia Power to recover financing costs for nuclear construction projects certified by the Georgia PSC.Plant Vogtle Units 3 and 4. Financing costs are recovered on all applicable certified costs through annual adjustments to the NCCR tariff by includingup to the related CWIP accounts in rate base during the construction period. Ascertified capital cost of September 30, 2017,$4.418 billion. At March 31, 2023, Georgia Power had recovered approximately $1.5$2.9 billion of financing costs. Financing costs related to capital costs above $4.418 billion are being recognized through AFUDC and are expected to be recovered through retail rates over the life of Plant Vogtle Units 3 and 4; however, Georgia Power expectsis not recording AFUDC related to file on November 1, 2017any capital costs in excess of the total deemed reasonable by the Georgia PSC (currently $7.3 billion) and not requested for rate recovery. In December 2022, the Georgia PSC approved Georgia Power's filing to increase the NCCR tariff by approximately $90$36 million annually, effective January 1, 2018, pending2023.
Georgia Power is required to file semi-annual VCM reports with the Georgia PSC approval.by February 28 and August 31 of each year. In 2013, in connection with the eighth VCM report, the Georgia PSC approved a stipulation between Georgia Power and the staff of the Georgia PSC to waive the requirement to amend the Plant Vogtle Units 3 and 4 certificate in accordance with the 2009 certification order until the completion of Plant Vogtle Unit 3, or earlier if deemed appropriate by the Georgia PSC and Georgia Power.
On December 20,In 2016, the Georgia PSC voted to approve a settlement agreement (Vogtle Cost Settlement Agreement) resolving certain prudency matters in connection with the fifteenth VCM report. In December 2017, the Georgia PSC voted to approve (and issued its related order on January 11, 2018) Georgia Power's seventeenth VCM report and modified the Vogtle Cost Settlement Agreement. The Vogtle Cost Settlement Agreement, as modified by the January 11, 2018 order, resolved the following prudence matters:regulatory matters related to Plant Vogtle Units 3 and 4: (i) none of the $3.3 billion of costs incurred through December 31, 2015 and reflected in the fourteenth VCM report willshould be disallowed from rate base on the basis of imprudence; (ii) the Contractor Settlement Agreement iswas reasonable and prudent and none of the amounts paid or to be$0.3 billion paid pursuant to the Contractor Settlement Agreement should be disallowed from rate base on the basis of imprudence; (iii) financing costs on verified and approved capital costs will be deemed prudent provided they are incurred prior to December 31, 2019 and December 31, 2020 for Plant Vogtle Units 3 and 4, respectively; and (iv) (a) the in-service capital cost forecast will be adjusted to $5.680 billion (Revised Forecast), which includes a contingency of $240 million above Georgia Power's then current forecast of $5.440 billion, (b) capital costs incurred up to the Revised Forecast will$5.68 billion would be presumed to be reasonable and prudent with the burden of proof on any party challenging such costs, and (c)(b) Georgia Power would have the burden to show that any capital costs above $5.68 billion were prudent, and (c) a revised capital cost forecast of $7.3 billion (after reflecting the Revised Forecast are reasonable and prudent. Underimpact of payments received under the terms of the Vogtle CostGuarantee Settlement Agreement and related customer refunds) was found reasonable; (iv) construction of Plant Vogtle Units 3 and 4 should be completed, with Southern Nuclear serving as project manager and Bechtel as primary contractor; (v) approved and deemed reasonable Georgia Power's revised schedule placing Plant Vogtle Units 3 and 4 in service in November 2021 and November 2022, respectively; (vi) confirmed that the certified in-service capitalrevised cost for purposes of calculatingforecast does not represent a cost cap and that a prudence proceeding on cost recovery will occur following Unit 4 fuel load, consistent with applicable Georgia law; (vii) reduced the NCCR tariff will remain at $4.418 billion. Construction capital costs above $4.418 billion will accrue AFUDC through the date each unit is placed in service. The ROE used to calculate the NCCR tariff was reduced(a) from 10.95% (the ROE rate setting point authorized by the Georgia PSC in the 2013 ARP)at that time) to 10.00% effective January 1, 2016. For purposes of the AFUDC calculation,2016, (b) from 10.00% to 8.30%, effective January 1, 2020, and (c) from 8.30% to 5.30%, effective January 1, 2021 (provided that the ROE on costs between $4.418 billion and $5.440 billionin no case will also be 10.00% and the ROE on any amounts above $5.440 billion would beless than Georgia Power's average cost of long-term debt. Ifdebt); (viii) reduced the Georgia PSC adjusts Georgia

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Power's ROE rate setting point in a rate case prior toused for AFUDC equity for Plant Vogtle Units 3 and 4 being placed intofrom 10.00% to Georgia Power's average cost of long-term debt, effective January 1, 2018; and (ix) agreed that effective the first month after Unit 3 reaches commercial operation, retail rate base thenrates would be adjusted to include the ROEcosts related to Unit 3 and common facilities deemed prudent in the Vogtle Cost Settlement Agreement (see Note 2 to the financial statements under "Georgia Power – Plant Vogtle Unit 3 and Common Facilities Rate Proceeding" in Item 8 of the Form 10-K for purposes of calculating both the NCCR tariff and AFUDC will likewise be 95 basis points lower than the revised ROE rate setting point. Ifadditional information). The January 11, 2018 order also stated that if Plant Vogtle Units 3 and 4 are not placed in servicecommercially operational by December 31, 2020, then (i)June 1, 2021 and June 1, 2022, respectively, the ROE for purposes of calculatingused to calculate the NCCR tariff will be further reduced an additional 300by 10 basis points or $8 million pereach month and may, at the Georgia PSC's discretion, be accrued
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Table of ContentsIndex to be used for the benefit of customers, until such time as the units are placed in service and (ii) the ROE used to calculate AFUDC will beFinancial Statements

NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(but not lower than Georgia Power's average cost of long-term debt.debt) until the respective Unit is commercially operational. The ROE reductions negatively impacted earnings by approximately $300 million in 2022 and are estimated to have negative earnings impacts of approximately $270 million in 2023 and $60 million in 2024. In its January 11, 2018 order, the Georgia PSC also stated if other conditions change and assumptions upon which Georgia Power's seventeenth VCM report are based do not materialize, the Georgia PSC reserved the right to reconsider the decision to continue construction.
In the August 2021 order approving the twenty-fourth VCM report, the Georgia PSC approved a stipulation addressing the following matters: (i) beginning with its twenty-fifth VCM report, Georgia Power will continue to report to the Georgia PSC all costs incurred during the period for review and will request for approval costs up to the $7.3 billion determined to be reasonable in the Georgia PSC's seventeenth VCM order and (ii) Georgia Power will not seek rate recovery of the $0.7 billion increase to the base capital cost forecast included in the nineteenth VCM report and charged to income by Georgia Power in the second quarter 2018. In addition, the stipulation confirms Georgia Power may request verification and approval of costs above $7.3 billion for inclusion in rate base at a later time, but no earlier than the prudence review contemplated by the seventeenth VCM order described previously.
The Georgia PSC has approved sixteen25 VCM reports covering the periods through December 31, 2016, includingJune 30, 2021. These reports reflect total construction capital costs incurred of $7.9 billion (net of $1.7 billion of payments received under the Guarantee Settlement Agreement and approximately $188 million in related customer refunds), of which the Georgia PSC has verified and approved $7.3 billion as described above. The Georgia PSC also has reviewed two additional VCM reports, which reflected $1.1 billion of additional construction capital costs incurred through that date totaled $3.9 billion.June 30, 2022. Georgia Power filed its seventeenthtwenty-eighth VCM report coveringwith the period from January 1 through June 30, 2017, requesting approval of $542Georgia PSC on February 16, 2023, which reflected the revised capital cost forecast described above and $461 million of construction capital costs incurred during that period, with the Georgia PSC on Augustfrom July 1, 2022 through December 31, 2017.
In the seventeenth VCM report, Georgia Power recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and 4 is by November 2021 for Unit 3 and by November 2022 for Unit 4. Georgia Power's recommendation to go forward with completion of Vogtle Units 3 and 4 is based on the following assumptions about the regulatory treatment of this recommendation, if the recommendation to go forward is adopted by the Georgia PSC: (i) that pursuant to Georgia law, the Georgia PSC in the seventeenth VCM proceeding approves the new cost and schedule forecast and finds that it is a reasonable basis for going forward, and that if the Georgia PSC disapproves all or part of the proposed cost and schedule revisions, Georgia Power may cancel Plant Vogtle Units 3 and 4 and recover its actual investment in Plant Vogtle Units 3 and 4; (ii) that the Vogtle Cost Settlement Agreement remains in full force and effect, including Georgia Power retaining the burden of proving all capital costs above $5.680 billion were prudent; (iii) that while the Georgia PSC will make no prudence finding in the seventeenth VCM proceeding, nor will the certified amount be amended consistent with the Vogtle Cost Settlement Agreement, the Georgia PSC recognizes that the certified amount is not a cap, and all costs that are approved and presumed or shown to be prudently incurred will be recoverable by Georgia Power; (iv) that Georgia Power is not a guarantor of the Toshiba Guarantee, and the failure of Toshiba to pay the Toshiba Guarantee, the failure of the U.S. Congress to extend the PTCs for Plant Vogtle Units 3 and 4, or the failure of the DOE to extend the Loan Guarantee Agreement with Georgia Power to reflect the increased capital amounts, will not reduce the amount of investment Georgia Power is otherwise allowed to collect; and (v) that as conditions change and assumptions are either proven or disproven, Georgia Power and the Georgia PSC may reconsider the decision to go forward. The Georgia PSC is expected to make a decision on these matters by February 6, 2018.2022.
The ultimate outcome of these matters cannot be determined at this time.
Revised Cost and Schedule
GeorgiaMississippi Power
Performance Evaluation Plan
On March 15, 2023, Mississippi Power submitted its annual retail PEP filing for 2023 to the Mississippi PSC indicating no change in retail rates. The ultimate outcome of this matter cannot be determined at this time.
Ad Valorem Tax Adjustment
On March 31, 2023, Mississippi Power submitted its annual ad valorem tax adjustment filing for 2023, which requested a $7 million annual decrease in revenues. The ultimate outcome of this matter cannot be determined at this time.
Environmental Compliance Overview Plan
On April 4, 2023, the Mississippi PSC approved Mississippi Power's approximate proportionate shareannual ECO Plan filing, resulting in a $3 million annual increase in revenues effective with the first billing cycle of the remaining estimated costMay 2023.
System Restoration Rider
On April 4, 2023, the Mississippi PSC approved Mississippi Power's annual SRR filing, which indicated no change in retail rates. Mississippi Power's minimum annual SRR accrual was increased from $8 million to complete Plant Vogtle Units 3 and 4 is as follows:$12 million.
52
 (in billions)
Estimated cost to complete$4.2
CWIP as of September 30, 20174.6
Guarantee Obligations(1.7)
Estimated capital costs$7.1
Vogtle Cost Settlement Agreement Revised Forecast(5.7)
Estimated net additional capital costs$1.4

Table of ContentsIndex to Financial Statements
Georgia Power's estimated financing costs during the construction period total approximately $3.4 billion, of which approximately $1.5 billion had been incurred through September 30, 2017.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Southern Company Gas
Georgia Power's cancellation cost estimate results indicate that its proportionate shareInfrastructure Replacement Programs and Capital Projects
Capital expenditures incurred under specific infrastructure replacement programs and capital projects during the first three months of the estimated costs to cancel both units is approximately $350 million. As a result, as of September 30, 2017, total estimated costs subject to evaluation by Georgia Power and the Georgia PSC in the event of a cancellation decision are2023 were as follows:
 Cancellation Cost Estimate
 (in billions)
CWIP as of September 30, 2017$4.6
Financing costs collected, net of tax1.5
Cancellation costs(*)
0.4
Guarantee Obligations(1.7)
Estimated net cancellation cost$4.8
(*)UtilityThe estimate for cancellation costs includes, but is not limited to, costs to terminate contracts for construction and other services, as well as costs to secure the Plant Vogtle Units 3 and 4 construction site.Program
Three Months
Ended
March 31, 2023
(in millions)
Nicor GasInvesting in Illinois$62 
Virginia Natural GasSAVE20 
Atlanta Gas LightSystem Reinforcement Rider32 
Chattanooga GasPipeline Replacement Program
Total$115 
(C) CONTINGENCIES
See Note 3 to the financial statements in Item 8 of the Form 10-K for information relating to various lawsuits and other contingencies.
General Litigation Matters
The Guarantee Obligations continue to existRegistrants are involved in various matters being litigated and regulatory matters. The ultimate outcome of such pending or potential litigation or regulatory matters against each Registrant and any subsidiaries cannot be determined at this time; however, for current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on such Registrant's financial statements.
The Registrants believe the pending legal challenges discussed below have no merit; however, the ultimate outcome of these matters cannot be determined at this time.
Alabama Power
In September 2022, Mobile Baykeeper filed a citizen suit in the eventU.S. District Court for the Southern District of cancellation. Alabama alleging that Alabama Power's plan to close the Plant Barry ash pond utilizing a closure-in-place methodology violates the Resource Conservation and Recovery Act (RCRA) and regulations governing CCR. Among other relief requested, Mobile Baykeeper seeks a declaratory judgment that the RCRA and regulations governing CCR are being violated, preliminary and injunctive relief to prevent implementation of Alabama Power's closure plan and the development of a closure plan that satisfies regulations governing CCR requirements. On December 19, 2022, Alabama Power filed a motion to dismiss the case. On January 31, 2023, the EPA issued a Notice of Potential Violations associated with Alabama Power's plan to close the Plant Barry ash pond. Alabama Power submitted responses on March 20, 2023, March 24, 2023, and April 3, 2023 affirming its position that it is in compliance with CCR requirements. The ultimate outcome of these matters cannot be determined at this time but could have an impact on Alabama Power's ARO estimates. See Note 6 to the financial statements in Item 8 of the Form 10-K for a discussion of Alabama Power's ARO liabilities.
Georgia Power
Municipal Franchise Fees
In addition, under Georgia law, prudently incurred costs related to certificated projects cancelled by the Georgia PSC are allowed recovery, including carrying costs, in future retail rates.2011, plaintiffs filed a putative class action against Georgia Power will continue working within the Superior Court of Fulton County, Georgia alleging that Georgia Power's collection in rates of amounts for municipal franchise fees (which fees are paid to municipalities) exceeded the amounts allowed in orders of the Georgia PSC and alleging certain state law
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
claims. This case has been ruled upon and appealed numerous times over the other Vogtle Ownerslast several years. In 2019, the Georgia PSC issued an order that found Georgia Power has appropriately implemented the municipal franchise fee schedule. In March 2021, the Superior Court of Fulton County granted class certification and Georgia Power's motion for summary judgment and the plaintiffs filed a notice of appeal. In April 2021, Georgia Power filed a notice of cross appeal on the issue of class certification. In December 2021, the Georgia Court of Appeals affirmed the Superior Court's ruling that granted summary judgment to determine future actions related to Plant Vogtle Units 3Georgia Power and 4, including, but not limiteddismissed Georgia Power's cross appeal on the issue of class certification as moot. Also in December 2021, the plaintiffs filed a petition for writ of certiorari to the statusGeorgia Supreme Court, which was denied on January 27, 2023. On February 6, 2023, the plaintiffs filed a motion for reconsideration with the Georgia Supreme Court, which was denied on February 16, 2023. This matter is now concluded.
Plant Scherer
In July 2020, a group of individual plaintiffs filed a complaint, which was amended in December 2022, in the Superior Court of Fulton County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer has impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs seek an unspecified amount of monetary damages including punitive damages, a medical monitoring fund, and injunctive relief. Georgia Power has filed multiple motions to dismiss the complaint. In December 2022, the Superior Court of Fulton County, Georgia granted Georgia Power's motion to transfer the case to the Superior Court of Monroe County, Georgia.
In October 2021 and February 2022, a total of seven additional complaints were filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that releases from Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries and property damage. The plaintiffs sought an unspecified amount of monetary damages including punitive damages. In November 2021 and March 2022, Georgia Power removed these cases to the U.S. District Court for the Middle District of Georgia. In November 2022, the plaintiffs voluntarily dismissed their complaints without prejudice. Georgia Power anticipates that these plaintiffs will refile their complaints.
On January 9, 2023, an additional complaint was filed in the Superior Court of Monroe County, Georgia against Georgia Power alleging that the construction and operation of Plant Scherer have impacted groundwater and air, resulting in alleged personal injuries. The plaintiff sought an unspecified amount of monetary damages, including punitive damages. On January 19, 2023, Georgia Power filed a notice to remove the case to the U.S. District Court for the Middle District of Georgia. On February 21, 2023, the plaintiff voluntarily dismissed the complaint without prejudice. Georgia Power anticipates that this plaintiff will refile the complaint.
The amount of any possible losses from these matters cannot be estimated at this time.
Mississippi Power
In 2018, Ray C. Turnage and 10 other individual plaintiffs filed a putative class action complaint against Mississippi Power and the three then-serving members of the Mississippi PSC in the U.S. District Court for the Southern District of Mississippi, which was amended in March 2019 to include four additional plaintiffs. Mississippi Power received Mississippi PSC approval in 2013 to charge a mirror CWIP rate recovery.premised upon including in its rate base pre-construction and construction costs for the Kemper IGCC prior to placing the Kemper IGCC into service. The Mississippi Supreme Court reversed that approval and ordered Mississippi Power to refund the amounts paid by customers under the previously-approved mirror CWIP rate. The plaintiffs allege that the initial approval process, and the amount approved, were improper and make claims for gross negligence, reckless conduct, and intentional wrongdoing. They also allege that Mississippi Power underpaid customers by up to $23.5 million in the refund process by applying an incorrect interest rate. The plaintiffs seek to recover, on behalf of themselves and their putative class, actual damages, punitive damages, pre-judgment interest, post-judgment interest, attorney's fees, and costs. The district court dismissed the amended complaint; however, in March 2020, the plaintiffs filed a motion seeking to name the new members of the Mississippi PSC, the Mississippi Development Authority, and Southern Company as additional defendants and add a cause of action against all defendants based on a dormant commerce
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
clause theory under the U.S. Constitution. In July 2020, the plaintiffs filed a motion for leave to file a third amended complaint, which included the same federal claims as the proposed second amended complaint, as well as several additional state law claims based on the allegation that Mississippi Power failed to disclose the annual percentage rate of interest applicable to refunds. In November 2020, the district court denied each of the plaintiffs' pending motions and entered final judgment in favor of Mississippi Power. In January 2021, the district court denied further motions by the plaintiffs to vacate the judgment and to file a revised second amended complaint. In February 2021, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. In March 2022, the U.S. Court of Appeals for the Fifth Circuit issued an opinion affirming the dismissal of the claims against the Mississippi PSC defendants but reversing the dismissal of the claims against Mississippi Power. In May 2022, the U.S. Court of Appeals for the Fifth Circuit denied a petition by Mississippi Power for a rehearing en banc and remanded the case to the U.S. District Court for the Southern District of Mississippi for further proceedings. In June 2022, Mississippi Power filed with the trial court a motion to dismiss the complaint with prejudice, which was granted on March 15, 2023. On March 28, 2023, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fifth Circuit. An adverse outcome in this proceeding could have a material impact on Mississippi Power's financial statements.
Environmental Remediation
The Southern Company system must comply with environmental laws and regulations governing the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the natural gas distribution utilities in Illinois and Georgia have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental remediation costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.
Georgia Power's environmental remediation liability was $15 million at both March 31, 2023 and December 31, 2022. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such sites is expected.
Southern Company Gas' environmental remediation liability was $243 million and $256 million at March 31, 2023 and December 31, 2022, respectively, based on the estimated cost of environmental investigation and remediation associated with known former manufactured gas plant operating sites.
The ultimate outcome of these matters cannot be determined at this time.time; however, as a result of the regulatory treatment for environmental remediation expenses described above, the final disposition of these matters is not expected to have a material impact on the financial statements of the applicable Registrants.
Other Matters
As of September 30, 2017, GeorgiaTraditional Electric Operating Companies
In April 2019, Bellsouth Telecommunications d/b/a AT&T Alabama (AT&T) filed a complaint against Alabama Power had borrowed $2.6 billion relatedwith the FCC alleging that the pole rental rate AT&T is required to Plant Vogtle Units 3 and 4 costs through the Loan Guarantee Agreement and a multi-advance credit facility among Georgia Power, the DOE, and the FFB, which provides for borrowings of up to $3.46 billion, subjectpay pursuant to the satisfactionparties' joint use agreement is unjust and unreasonable under federal law. The complaint sought a new rate and approximately $87 million in refunds of certain conditions. On September 28, 2017,alleged overpayments for the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billionpreceding six years. In August 2019, the FCC stayed the case in additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuancefavor of these additional loan guarantees by the DOEarbitration, which AT&T has not pursued. The ultimate outcome of this matter cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions. See Note 6 todetermined at this time, but an adverse outcome could have a material impact on the financial statements of Southern Company and Alabama Power. Georgia Power under "DOE Loan Guarantee Borrowings"and Mississippi Power have joint use agreements with other AT&T affiliates.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Mississippi Power
In August 2022, the Mississippi Department of Revenue (Mississippi DOR) completed an audit of sales and use taxes paid by Mississippi Power from 2016 to 2019 and entered a final assessment, indicating a total amount due of $28 million, including associated penalties and interest. Additional interest of approximately $1 million was estimated through March 31, 2023. Mississippi Power does not agree with the audit findings and, in October 2022, filed an administrative appeal with the Mississippi DOR. See Note 3 to the financial statements in Item 8 of the Form 10-K and Note (E) under "DOE Loan Guarantee Borrowings""Other Matters – Mississippi Power – Department of Revenue Audit" for additional information, including applicable covenants, events of default, mandatory prepayment events, and conditions to borrowing.
The IRS has allocated PTCs to Plant Vogtle Units 3 and 4 which require that the applicable unit be placed in service prior to 2021. The net present value of Georgia Power's PTCs is estimated at approximately $400 million per unit.
There have been technical and procedural challenges to the construction and licensing of Plant Vogtle Units 3 and 4 at the federal and state level and additional challenges may arise while construction proceeds. Processes are in place that are designed to assure compliance with the requirements specified in the Westinghouse Design Control Document and the combined construction and operating licenses, including inspections by Southern Nuclear and the NRC that occur throughout construction. As a result of such compliance processes, certain license amendment requests have been filed and approved or are pending before the NRC. Various design and other licensing-based compliance matters, including the timely resolution of Inspections, Tests, Analyses, and Acceptance Criteria and the related approvals by the NRC, may arise while construction proceeds, which may result in additional license amendments or require other resolution. If any license amendment requests or other licensing-based compliance issues are not resolved in a timely manner, there may be delays in the project schedule that could result in increased costs.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

While construction continues, the risk remains that challenges with management of contractors, subcontractors, and vendors, labor productivity, fabrication, delivery, assembly, and installation of plant systems, structures, and components, or other issues could arise and may further impact project schedule and cost.
The ultimate outcome of these matters cannot be determined at this time.
Gulf Power
See Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters" in Item 8 of the Form 10-K for additional information regarding Gulf Power's rates and charges for service to retail customers.
Retail Base Rate Cases
See Note 3 to the financial statements of Southern Company and Gulf Power under "Regulatory Matters – Gulf Power – Retail Base Rate Cases" and "Retail Regulatory Matters – Retail Base Rate Cases," respectively, in Item 8 of the Form 10-K for additional information.
In 2013, the Floridaa Mississippi PSC approved a settlement agreement that authorized Gulf Power to reduce depreciation and record a regulatory asset up to $62.5 million from January 2014 through June 2017. In any given month, such depreciation reduction could not exceed the amount necessary for the retail ROE, as reported to the Florida PSC monthly, to reach the midpoint of the authorized retail ROE range then in effect. For 2014 and 2015, Gulf Power recognized reductions in depreciation of $8.4 million and $20.1 million, respectively. No net reduction in depreciation was recorded in 2016. Through June 2017, Gulf Power recognized the remaining allowable reductions in depreciation totaling $34.0 million.
On April 4, 2017, the Florida PSC approved the 2017 Rate Case Settlement Agreement among Gulf Power and three intervenors with respect to Gulf Power's request to increase retail base rates. Among the terms of the 2017 Rate Case Settlement Agreement, Gulf Power increased rates effective with the first billing cycle in July 2017 to provide an annual overall net customer impact of approximately $54.3 million. The net customer impact consisted of a $62.0 million increase in annual base revenues less an annual equivalent credit of approximately $7.7 million for 2017 for certain wholesale revenues to be provided through December 2019 through the purchased power capacity cost recovery clause. In addition, Gulf Power continued its authorized retail ROE midpoint (10.25%) and range (9.25% to 11.25%), is deemed to have an equity ratio of 52.5% for all retail regulatory purposes, and implemented new dismantlement accruals effective July 1, 2017. Gulf Power will also begin amortizing the regulatory asset associated with the investment balances remaining after the retirement of Plant Smith Units 1 and 2 (357 MWs) over 15 years effective January 1, 2018 and will implement new depreciation rates effective January 1, 2018. The 2017 Rate Case Settlement Agreement also resulted in a $32.5 million write-down of Gulf Power's ownership of Plant Scherer Unit 3 (205 MWs), which was recorded in the first quarter 2017. The remaining issuesaccounting order related to the inclusion of Gulf Power's investment in Plant Scherer Unit 3 in retail rates have been resolved as a result of the 2017 Rate Case Settlement Agreement, including recoverability of certain costs associated with the ongoing ownership and operation of the unit through the environmental cost recovery clause rate approved by the Florida PSC in November 2016.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Cost Recovery Clauses
See Note 3 to the financial statements of Gulf Power under "Retail Regulatory Matters – Cost Recovery Clauses" in Item 8 of the Form 10-K for additional information regarding Gulf Power's recovery of retail costs through various regulatory clauses and accounting orders. Gulf Power has four regulatory clauses which are approved by the Florida PSC. The balance of each regulatory clause recovery on the balance sheet follows:
Regulatory ClauseBalance Sheet Line ItemSeptember 30,
2017
December 31,
2016


(in millions)
Fuel Cost RecoveryUnder recovered regulatory clause revenues$13
$
Fuel Cost RecoveryOther regulatory liabilities, current
15
Purchased Power Capacity RecoveryUnder recovered regulatory clause revenues1

Environmental Cost RecoveryOther regulatory liabilities, current1

Environmental Cost RecoveryUnder recovered regulatory clause revenues
13
Energy Conservation Cost RecoveryUnder recovered regulatory clause revenues1
4
As discussed previously, the 2017 Rate Case Settlement Agreement resolved the remaining issues related to Gulf Power's inclusion of certain costs associated with the ongoing ownership and operation of Plant Scherer Unit 3 in the environmental cost recovery clause and no adjustment to the environmental cost recovery clause rate approved by the Florida PSC in November 2016 was made.
On October 25, 2017, the Florida PSC approved Gulf Power's annual rate clause request for its fuel, purchased power capacity, environmental, and energy conservation cost recovery factors for 2018. The net effect of the approved changes is a $63 million increase in annual revenues effective in January 2018, the majority of which will be offset by related expense increases.
Mississippi Power
Performance Evaluation Plan
See Note 3 to the financial statements of Mississippi Power under "Retail Regulatory Matters – Performance Evaluation Plan" in Item 8 of the Form 10-K for additional information regarding Mississippi Power's base rates.
On March 15, 2017, Mississippi Power submitted its annual PEP lookback filing for 2016, which reflected the need for a $5 million surcharge to be recovered from customers. The filing has been suspended for review by the Mississippi PSC.tax audit proceeding. The ultimate outcome of this matter cannot be determined at this time.
Energy Efficiency
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(D) REVENUE FROM CONTRACTS WITH CUSTOMERS AND LEASE INCOME
Revenue from Contracts with Customers
The Registrants generate revenues from a variety of sources, some of which are not accounted for as revenue from contracts with customers, such as leases, derivatives, and certain cost recovery mechanisms. See Note 31 to the financial statements under "Revenues" in Item 8 of Mississippithe Form 10-K for additional information on the revenue policies of the Registrants. See "Lease Income" herein and Note (J) for additional information on revenue accounted for under lease and derivative accounting guidance, respectively.
The following table disaggregates revenue from contracts with customers for the three months ended March 31, 2023 and 2022:
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2023
Operating revenues
Retail electric revenues
Residential$1,525 $659 $801 $65 $ $ 
Commercial1,251 430 753 68   
Industrial789 398 313 78   
Other27 3 22 2   
Total retail electric revenues3,592 1,490 1,889 213   
Natural gas distribution revenues
Residential896     896 
Commercial232     232 
Transportation319     319 
Industrial23     23 
Other117     117 
Total natural gas distribution revenues1,587     1,587 
Wholesale electric revenues
PPA energy revenues284 72 12 4 202  
PPA capacity revenues190 60 11 32 89  
Non-PPA revenues36 20 3 107 103  
Total wholesale electric revenues510 152 26 143 394  
Other natural gas revenues
Gas marketing services231     231 
Other natural gas revenues11     11 
Total natural gas revenues242     242 
Other revenues310 54 132 11 11  
Total revenue from contracts with customers6,241 1,696 2,047 367 405 1,829 
Other revenue sources(*)
239 (49)129 23 103 46 
Total operating revenues$6,480 $1,647 $2,176 $390 $508 $1,875 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2022
Operating revenues
Retail electric revenues
Residential$1,525 $634 $821 $70 $— $— 
Commercial1,178 375 738 65 — — 
Industrial727 323 334 70 — — 
Other26 20 — — 
Total retail electric revenues3,456 1,336 1,913 207 — — 
Natural gas distribution revenues
Residential1,016 — — — — 1,016 
Commercial270 — — — — 270 
Transportation337 — — — — 337 
Industrial32 — — — — 32 
Other129 — — — — 129 
Total natural gas distribution revenues1,784 — — — — 1,784 
Wholesale electric revenues
PPA energy revenues342 59 32 251 — 
PPA capacity revenues134 39 12 81 — 
Non-PPA revenues58 64 102 73 — 
Total wholesale electric revenues534 162 53 108 405 — 
Other natural gas revenues
Gas marketing services243 — — — — 243 
Other natural gas revenues16 — — — — 16 
Total natural gas revenues259 — — — — 259 
Other revenues225 48 95 — 
Total revenue from contracts with customers6,258 1,546 2,061 324 413 2,043 
Other revenue sources(*)
390 103 147 11 126 15 
Total operating revenues$6,648 $1,649 $2,208 $335 $539 $2,058 
(*)Other revenue sources relate to revenues from customers accounted for as derivatives and leases, alternative revenue programs at Southern Company Gas, and cost recovery mechanisms and revenues that meet other scope exceptions for revenues from contracts with customers at the traditional electric operating companies.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Contract Balances
The following table reflects the closing balances of receivables, contract assets, and contract liabilities related to revenues from contracts with customers at March 31, 2023 and December 31, 2022:
Southern CompanyAlabama PowerGeorgia PowerMississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Accounts Receivable
At March 31, 2023$2,433 $622 $672 $79 $119 $853 
At December 31, 20223,123 696 922 92 237 1,107 
Contract Assets
At March 31, 2023$160 $$74 $— $— $19 
At December 31, 2022156 89 — — — 
Contract Liabilities
At March 31, 2023$61 $$14 $$$— 
At December 31, 202245 — — 
Contract assets for Georgia Power primarily relate to retail customer fixed bill programs, where the payment is contingent upon Georgia Power's continued performance and the customer's continued participation in the program over a one-year contract term, and unregulated service agreements, where payment is contingent on project completion. Contract liabilities for Georgia Power primarily relate to cash collections recognized in advance of revenue for unregulated service agreements. At March 31, 2023, Southern Company Gas' contract assets relate to work performed on an energy efficiency enhancement and upgrade contract with the U.S. General Services Administration. Southern Company Gas receives cash advances from a third-party financial institution to fund work performed, of which approximately $30 million had been received at March 31, 2023. These advances have been accounted for as long-term debt on the balance sheets. See Note 1 to the financial statements under "Retail Regulatory Matters – Energy Efficiency""Affiliate Transactions" in Item 8 of the Form 10-K for additional information regarding Mississippi Power's energy efficiency programs.the construction contract. At March 31, 2023 and December 31, 2022, Southern Company's unregulated distributed generation business had contract assets of $64 million and $65 million, respectively, and contract liabilities of $44 million and $32 million, respectively, for outstanding performance obligations.
On July 6, 2017,Revenues recognized in the Mississippi PSC issued an order approving Mississippi Power's Energy Efficiency Cost Rider compliance filing,three months ended March 31, 2023, which increased annual retailwere included in contract liabilities at December 31, 2022, were $19 million for Southern Company and immaterial for the other Registrants.
Remaining Performance Obligations
The Subsidiary Registrants may enter into long-term contracts with customers in which revenues by approximately $2 million effective withare recognized as performance obligations are satisfied over the first billing cyclecontract term. For Alabama Power, Georgia Power, and Southern Power, these contracts primarily relate to PPAs whereby electricity and generation capacity are provided to a customer. The revenue recognized for August 2017.
Environmental Compliance Overview Plan
On May 4, 2017, the Mississippi PSC approved Mississippi Power's ECO Plan filingdelivery of electricity is variable; however, certain PPAs include a fixed payment for 2017, which requestedfixed generation capacity over the maximum 2% annual increase in revenues, approximately $18 million,term of the contract. For Southern Company Gas, these contracts primarily relate to the U.S. General Services Administration contract described above. Southern Company's unregulated distributed generation business also has partially satisfied performance obligations related to the Plant Daniel Units 1certain fixed price contracts. Revenues from contracts with customers related to these performance obligations remaining at March 31, 2023 are expected to be recognized as follows:

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

2023 (remaining)2024202520262027Thereafter
(in millions)
Southern Company$632 $553 $347 $315 $319 $2,089 
Alabama Power17 — — — 
Georgia Power68 60 25 13 14 23 
Southern Power268 345 302 303 310 2,077 
Southern Company Gas15 29 — — — — 
Lease Income
Lease income for the three months ended March 31, 2023 and 2 scrubbers placed2022 is as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi
Power
Southern PowerSouthern Company Gas
 (in millions)
For the Three Months Ended March 31, 2023
Lease income - interest income on sales-type leases$$— $— $$$— 
Lease income - operating leases49 18 21 
Variable lease income69 — — — 75 — 
Total lease income$124 $18 $$$98 $
For the Three Months Ended March 31, 2022
Lease income - interest income on sales-type leases$$— $— $$$— 
Lease income - operating leases51 20 — 21 
Variable lease income84 — — — 90 — 
Total lease income$141 $20 $$$113 $
Lease payments received under tolling arrangements and PPAs consist of either scheduled payments or variable payments based on the amount of energy produced by the underlying electric generating units. Lease income for Alabama Power and Southern Power is included in service in 2015. The rates became effective with the first billing cycle for June 2017. Approximately $26 million of related revenue requirements in excess of the 2% maximum was deferred for inclusion in the 2018 filing.wholesale revenues.
Fuel Cost Recovery
(E) CONSOLIDATED ENTITIES AND EQUITY METHOD INVESTMENTS
See Note 37 to the financial statements of Mississippi Power under "Retail Regulatory Matters – Fuel Cost Recovery" in Item 8 of the Form 10-K for additional information regarding Mississippi Power's retail fuel cost recovery.
At September 30, 2017, the amount of over-recovered retail fuel costs included on Mississippi Power's condensed balance sheet was $2 million compared to $37 million at December 31, 2016.
Ad Valorem Tax Adjustment
See Note 3 to the financial statements of Mississippi Power under "Retail Regulatory Matters – Ad Valorem Tax Adjustment" in Item 8 of the Form 10-K for additional information regarding Mississippi Power's ad valorem tax adjustments.
On July 6, 2017, the Mississippi PSC approved Mississippi Power's annual ad valorem tax adjustment factor filing for 2017, which included an annual rate increase of 0.85%, or $8 million in annual retail revenues, primarily due to increased assessments.
Southern Company Gas
Riders
Nicor Gas has established a variable tax cost adjustment rider, which was approved by the Illinois Commission effective July 16, 2017. This rider provides for recovery of the invested capital tax imposed on Nicor Gas through an annual true-up and reconciliation mechanism based on amounts approved in prior rate cases. Accordingly, this rider will not have a significant effect on Southern Company Gas' net income.
Natural Gas Cost Recovery
Southern Company Gas has established natural gas cost recovery rates approved by the relevant state regulatory agencies in the states in which it serves. Natural gas cost recovery revenues are adjusted for differences in actual recoverable natural gas costs and amounts billed in current regulated rates. Changes in the billing factor will not have a significant effect on Southern Company's or Southern Company Gas' revenues or net income, but will affect cash flows.
Base Rate Cases
See Note 3 to the financial statements of Southern Company Gas under "Regulatory Matters – Base Rate Cases" in Item 8 of the Form 10-K for additional information.
Settled Base Rate Cases
On February 21, 2017,Southern Company
At March 31, 2023 and December 31, 2022, Southern Holdings had equity method investments totaling $120 million and $112 million, respectively, primarily related to investments in venture capital funds focused on energy and utility investments. Earnings from these investments were immaterial for both periods presented.
Southern Power
Variable Interest Entities
Southern Power has certain subsidiaries that are determined to be VIEs. Southern Power is considered the Georgia PSC approvedprimary beneficiary of these VIEs because it controls the Georgia Rate Adjustment Mechanism (GRAM)most significant activities of the VIEs, including operating and a $20 million increase in annual base rate revenues for Atlanta Gas Light, effective March 1, 2017. GRAM adjusts base rates annually, up or down, based onmaintaining the previously approved ROErespective assets, and has the obligation to absorb expected losses of 10.75% and does not collect revenue through special riders and surcharges. Various infrastructure programs previously authorized by the Georgia PSC under Atlanta Gas Light's STRIDE program, which include the Integrated Vintage Plastic Replacement Program and Integrated System Reinforcement Program, will continue under GRAM and the recovery of and return on the infrastructure program investments will be included in annual base rate adjustments. The Georgia PSC will review Atlanta Gas Light's performance annually under GRAM.
Pursuantthese VIEs to the GRAM approval, Atlanta Gas Light and the staffextent of the Georgia PSC agreedits equity interests.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

SP Solar and SP Wind
new tariff was created, effective October 10, 2017,At March 31, 2023 and December 31, 2022, SP Solar had total assets of $5.8 billion and $5.9 billion, respectively, total liabilities of $0.4 billion, and noncontrolling interests of $1.0 billion and $1.1 billion, respectively. Cash distributions from SP Solar are allocated 67% to provide $15Southern Power and 33% to Global Atlantic in accordance with their partnership interest percentage. Under the terms of the limited partnership agreement, distributions without limited partner consent are limited to available cash and SP Solar is obligated to distribute all such available cash to its partners each quarter. Available cash includes all cash generated in the quarter subject to the maintenance of appropriate operating reserves.
At March 31, 2023 and December 31, 2022, SP Wind had total assets of $2.2 billion, total liabilities of $172 million annually for Atlanta Gas Lightand $169 million, respectively, and noncontrolling interests of $39 million. Under the terms of the limited liability agreement, distributions without Class A member consent are limited to commitavailable cash and SP Wind is obligated to strategic economic development projects.
Beginningdistribute all such available cash to its members each quarter. Available cash includes all cash generated in the quarter subject to the maintenance of appropriate operating reserves. Cash distributions from SP Wind are generally allocated 60% to Southern Power and 40% to the three financial investors in accordance with the next rate adjustment in June 2018, Atlanta Gas Light's recoverylimited liability agreement.
Southern Power consolidates both SP Solar and SP Wind, as the primary beneficiary, since it controls the most significant activities of each entity, including operating and maintaining their assets. Certain transfers and sales of the previously unrecovered Pipeline Replacement Program revenue through 2014, as well asassets in the mitigation costsVIEs are subject to partner consent and the liabilities are non-recourse to the general credit of Southern Power. Liabilities consist of customary working capital items and do not include any long-term debt.
Other Variable Interest Entities
Southern Power has other consolidated VIEs that relate to certain subsidiaries that have either sold noncontrolling interests to tax equity investors or acquired less than a 100% interest from facility developers. These entities are considered VIEs because the arrangements are structured similar to a limited partnership and the noncontrolling members do not have substantive kick-out rights.
At March 31, 2023 and December 31, 2022, the other VIEs had total assets of $1.8 billion, total liabilities of $0.2 billion, and noncontrolling interests of $0.8 billion. Under the terms of the partnership agreements, distributions of all available cash are required each month or quarter and additional distributions require partner consent.
Equity Method Investments
At December 31, 2022, Southern Power had equity method investments in wind and battery energy storage projects totaling $49 million. During the first quarter 2023, Southern Power sold its remaining equity method investments in the projects and received proceeds of $50 million. Earnings (loss) from these investments, including the gains associated with the Pipeline Replacement Program thatsales, were not previously included in its rates, will also be included in GRAM. In connection withimmaterial for the GRAM approval, the last monthly Pipeline Replacement Program surcharge increase became effective March 1, 2017.
In September 2016, Elizabethtown Gas filed a general base rate case with the New Jersey BPU requesting a $19 million increase in annual base rate revenues. The requested increase was based on a projected 12-month test year endingthree months ended March 31, 20172023 and a ROE2022.
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Table of 10.25%. On June 30, 2017, the New Jersey BPU approved a settlement that provides for a $13 million increase in annual base rate revenues, effective July 1, 2017, based on a ROE of 9.6%. Also included in the settlement was a new composite depreciation rate that is expectedContentsIndex to result in a $3 million annual reduction of depreciation. See Note (I) under "Southern Company Gas" for information on the proposed sale of Elizabethtown Gas.Financial Statements
Pending Base Rate Cases
On March 10, 2017, Nicor Gas filed a general base rate case with the Illinois Commission requesting a $208 million increase in annual base rate revenues. The requested increase is based on a 2018 projected test year and a ROE of 10.7%. The Illinois Commission is expected to rule on the requested increase in December 2017, after which rate adjustments will be effective.NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
On March 31, 2017, Virginia Natural Gas filed a general base rate case with the Virginia Commission requesting a $44 million increase in annual base rate revenues. The requested increase was based on a projected 12-month test year beginning September 1, 2017 and a ROE of 10.25%. The requested increase included $13 million related to the recovery of investments under the Steps to Advance Virginia's Energy (SAVE) program. On October 3, 2017, Virginia Natural Gas entered into a proposed stipulation with the Staff of the Virginia Commission, the Office of the Attorney General, Division of Consumer Counsel, and the Virginia Industrial Gas Users' Association resolving all related issues. The proposed stipulation includes a $34 million increase in annual base rate revenues, including $13 million related to the recovery of investments under the SAVE program. An authorized ROE range of 9.0% to 10.0% with a midpoint of 9.5% will be used to determine the revenue requirement in any filing, other than for a change in base rates. The Virginia Commission is expected to rule on the proposed stipulation in the fourth quarter 2017. Rate adjustments based on the proposed stipulation became effective September 1, 2017, subject to refund.(UNAUDITED)
On October 23, 2017, Florida City Gas filed a general base rate case with the Florida PSC requesting a $19 million increase in annual base rate revenues. The requested increase is based on a 2018 projected test year and a ROE of 11.25%. The requested increase includes $3 million related to the recovery of investments under the Safety, Access, and Facility Enhancement (SAFE) program. Additionally, Florida City Gas requested interim rates of $5 million to be effective in January 2018, subject to refund. The Florida PSC is expected to rule on the requested increase in mid-2018.
The ultimate outcome of these pending base rate cases cannot be determined at this time.
Regulatory Infrastructure Programs
Southern Company Gas is engaged in various infrastructure programs that update or expand its gas distribution systems
Equity Method Investments
The carrying amounts of Southern Company Gas' equity method investments at March 31, 2023 and December 31, 2022 and related earnings from those investments for the three months ended March 31, 2023 and 2022 were as follows:
Investment BalanceMarch 31, 2023December 31, 2022
(in millions)
SNG$1,249 $1,243 
Other33 33 
Total$1,282 $1,276 
Three Months Ended March 31,
Earnings from Equity Method Investments20232022
(in millions)
SNG$44 $39 
Other1 
Total$45 $40 
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(F) FINANCING AND LEASES
Bank Credit Arrangements
See Note 38 to the financial statements of Southern Company and Southern Company Gas under "Regulatory Matters – Southern Company Gas – Regulatory Infrastructure Programs" and "Regulatory Matters – Regulatory Infrastructure Programs," respectively,"Bank Credit Arrangements" in Item 8 of the Form 10-K for additional information.

At March 31, 2023, committed credit arrangements with banks were as follows:
Expires
Company2023202420252026TotalUnusedExpires within
One Year
(in millions)
Southern Company parent$— $— $— $2,000 $2,000 $1,998 $— 
Alabama Power— 550 — 700 1,250 1,250 — 
Georgia Power— — — 1,750 1,750 1,726 — 
Mississippi Power— 150 125 — 275 225 — 
Southern Power(a)
— — — 600 600 587 — 
Southern Company Gas(b)
250 — — 1,500 1,750 1,748 250 
SEGCO30 — — — 30 30 30 
Southern Company$280 $700 $125 $6,550 $7,655 $7,564 $280 
(a)Does not include Southern Power Company's $75 million and $100 million continuing letter of credit facilities for standby letters of credit, expiring in 2025 and 2026, respectively, of which $9 million and $16 million, respectively, was unused at March 31, 2023. In March 2023, Southern Power amended the $100 million letter of credit facility, which, among other things, extended the expiration date from 2025 to 2026 and increased the amount from $75 million. Southern Power's subsidiaries are not parties to its bank credit arrangements or letter of credit facilities.
(b)Southern Company Gas, as the parent entity, guarantees the obligations of Southern Company Gas Capital, which is the borrower of $800 million of the credit arrangement expiring in 2026. Southern Company Gas' committed credit arrangement expiring in 2026 also includes $700 million for which Nicor Gas is the borrower and which is restricted for working capital needs of Nicor Gas. Pursuant to the multi-year credit arrangement expiring in 2026, the allocations between Southern Company Gas Capital and Nicor Gas may be adjusted. Nicor Gas is also the borrower under a $250 million credit arrangement expiring in 2023.
Subject to applicable market conditions, Southern Company and its subsidiaries expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, Southern Company and its subsidiaries may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
These bank credit arrangements, as well as the term loan arrangements of the Registrants, Nicor Gas, and SEGCO, contain covenants that limit debt levels and contain cross-acceleration or, in the case of Southern Power, cross-default provisions to other indebtedness (including guarantee obligations) that are restricted only to the indebtedness of the individual company. Such cross-default provisions to other indebtedness would trigger an event of default if Southern Power defaulted on indebtedness or guarantee obligations over a specified threshold. Such cross-acceleration provisions to other indebtedness would trigger an event of default if the applicable borrower defaulted on indebtedness, the payment of which was then accelerated. At March 31, 2023, the Registrants, Nicor Gas, and SEGCO were in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowings.
A portion of the unused credit with banks is allocated to provide liquidity support to the revenue bonds of the traditional electric operating companies and the commercial paper programs of the Registrants, Nicor Gas, and SEGCO. The amount of variable rate revenue bonds of the traditional electric operating companies outstanding requiring liquidity support at March 31, 2023 was approximately $1.7 billion (comprised of approximately $789 million at Alabama Power, $819 million at Georgia Power, and $69 million at Mississippi Power). In addition, at March 31, 2023, Alabama Power and Georgia Power had approximately $120 million and $285 million, respectively, of fixed rate revenue bonds outstanding that are required to be remarketed within the next 12 months.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Nicor GasConvertible Senior Notes
In 2014,February 2023, Southern Company issued $1.5 billion aggregate principal amount of Series 2023A 3.875% Convertible Senior Notes due December 15, 2025 (Series 2023A Convertible Senior Notes). In March 2023, Southern Company issued an additional $225 million aggregate principal amount of the Illinois Commission approved Nicor Gas' nine-year regulatory infrastructure program, Investing in Illinois. Under this program, Nicor Gas placed into service $178 millionSeries 2023A Convertible Senior Notes upon the exercise by the initial purchasers of qualifying assetstheir over-allotment option.
Interest on the Series 2023A Convertible Senior Notes is payable semiannually, beginning June 15, 2023. The Series 2023A Convertible Senior Notes will mature on December 15, 2025, unless earlier converted or repurchased, but are not redeemable at the option of Southern Company. The Series 2023A Convertible Senior Notes are direct, unsecured, and unsubordinated obligations of Southern Company, ranking equally with all of Southern Company's other unsecured and unsubordinated indebtedness from time to time outstanding, and are effectively subordinated to all secured indebtedness of Southern Company.
Holders may convert their Series 2023A Convertible Senior Notes at their option prior to the close of business on the business day preceding September 15, 2025, but only under the following circumstances:
during any calendar quarter (and only during such calendar quarter), if the last reported sale price of Southern Company's common stock for at least 20 trading days (whether or not consecutive) during the first nine monthsperiod of 2017.30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day as determined by Southern Company;
Atlanta Gas Light
Atlanta Gas Light's STRIDE program, which started in 2009, consists of three individual programs that update and expand gas distribution systems and LNG facilities as well as improve system reliability to meet operational flexibility and customer growth. Through the programs under STRIDE, Atlanta Gas Light invested $127 million during the first nine monthsfive business day period after any 10 consecutive trading day period (Measurement Period) in which the trading price per $1,000 principal amount of 2017. The recoverySeries 2023A Convertible Senior Notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of the common stock and returnthe conversion rate on current and future capital investments undereach such trading day; or
upon the STRIDE program are includedoccurrence of certain corporate events specified in the annual baseindenture governing the Series 2023A Convertible Senior Notes.
On or after September 15, 2025, a holder may convert all or any portion of its Series 2023A Convertible Senior Notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions.
Southern Company will settle conversions of the Series 2023A Convertible Senior Notes by paying cash up to the aggregate principal amount of the Series 2023A Convertible Senior Notes to be converted and paying or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at Southern Company's election, in respect of the remainder, if any, of Southern Company's conversion obligation in excess of the aggregate principal amount of the Series 2023A Convertible Senior Notes being converted. The Series 2023A Convertible Senior Notes are initially convertible at a rate revenueof 11.8818 shares of common stock per $1,000 principal amount converted, which is approximately equal to $84.16 per share of common stock. The conversion rate will be subject to adjustment under GRAM.
upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid interest. In August 2016, Atlanta Gas Light filedaddition, upon the occurrence of a petitionmake-whole fundamental change (as defined in the indenture governing the Series 2023A Convertible Senior Notes), Southern Company will, in certain circumstances, increase the conversion rate by a number of additional shares of common stock for conversions in connection with the Georgia PSC for approvalmake-whole fundamental change.
Upon the occurrence of a four-year extension of its Integrated System Reinforcement Program (i-SRP) seeking approval to invest an additional $177 million to improve and upgrade its core gas distribution system in years 2017 through 2020. Subsequently, the proposed capital investments associated with the extension of i-SRP were includedfundamental change (as defined in the 2017 annual base rate revenueindenture governing the Series 2023A Convertible Senior Notes), holders of the Series 2023A Convertible Senior Notes may require Southern Company to purchase all or a portion of their Series 2023A Convertible Senior Notes, in principal amounts equal to $1,000 or an integral multiple thereof, for cash at a price equal to 100% of the principal amount of the Series 2023A Convertible Senior Notes to be purchased plus any accrued and unpaid interest.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Earnings per Share
For Southern Company, the only difference in computing basic and diluted earnings per share (EPS) is attributable to awards outstanding under GRAM approved bystock-based compensation plans and the Georgia PSC on February 21, 2017.
Series 2023A Convertible Senior Notes. EPS dilution resulting from stock-based compensation plans is determined using the treasury stock method and EPS dilution resulting from the Series 2023A Convertible Senior Notes is determined using the net share settlement method. See "Base Rate Cases"Note 12 to the financial statements in Item 8 of the Form 10-K and "Convertible Senior Notes" herein for additional information. Shares used to compute diluted EPS were as follows:
Elizabethtown Gas
Three Months Ended March 31,
20232022
 (in millions)
As reported shares1,091 1,063 
Effect of stock-based compensation7 
Diluted shares1,098 1,069 
In 2013,For the New Jersey BPU approvedthree months ended March 31, 2023, there were no anti-dilutive shares. For the extensionthree months ended March 31, 2022, an immaterial number of Elizabethtown Gas' Aging Infrastructure Replacement program, under which Elizabethtown Gas invested $16 million duringstock-based compensation awards was excluded from the first nine months of 2017. Effective July 1, 2017, investments under this program are being recovered through base rate revenues.diluted EPS calculation because the awards were anti-dilutive.
Virginia Natural GasFor both periods presented, there was no dilution resulting from the Series 2023A Convertible Senior Notes.
In March 2016, the Virginia Commission approved an extension to the SAVE program, under which Virginia Natural Gas invested $21 million during the first nine months of 2017.
Florida City Gas
The Florida PSC approved Florida City Gas' SAFE program in 2015. Under the program, Florida City Gas invested $9 million during the first nine months of 2017.
Integrated Coal Gasification Combined CycleSouthern Company Leveraged Lease
See Note 39 to the financial statements of Southern Company and Mississippi Power under "Integrated Coal Gasification Combined Cycle" in Item 8 of the Form 10-K for information regarding Mississippi Power's constructionon a leveraged lease agreement related to energy generation. In June 2022, the Southern Holdings subsidiary operating the generating plant for the lessee provided notice to the lessee to terminate the related operating and maintenance agreement effective June 30, 2023. Subsequently, the lessee failed to make the semi-annual lease payment due in December 2022. As a result, the Southern Holdings subsidiary was unable to make its corresponding payment to the holders of the Kemper IGCC.
Kemper IGCC Overview
The Kemper IGCC was designed to utilize IGCC technology with an expected output capacity of 582 MWs and to be fueled by locally mined lignite (an abundant, lower heating value coal) from a mine owned by Mississippi Power and situated adjacent to the Kemper IGCC. The mine, operated by North American Coal Corporation, started commercial operation in 2013. In connection with the Kemper IGCC, Mississippi Power constructed approximately 61 miles of CO2 pipeline infrastructure for the transport of captured CO2 for use in enhanced oil recovery.
Kemper IGCC Schedule and Cost Estimate
In 2012, the Mississippi PSC issued the 2012 MPSC CPCN Order, a detailed order confirming the CPCN originally approved by the Mississippi PSC in 2010 authorizing the acquisition, construction, and operation of the Kemper IGCC. The certificated cost estimate of the Kemper IGCC included in the 2012 MPSC CPCN Order was $2.4 billion, net of $245 million of grants awarded to the Kemper IGCC project by the DOE under the Clean Coal Power

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Initiative Round 2 (Initial DOE Grants) and excluding the cost of the lignite mine and equipment, the cost of the CO2 pipeline facilities, and AFUDCunderlying non-recourse debt related to the Kemper IGCC.generation assets. The 2012 MPSC CPCN Order approvedparties to the lease have entered into a construction cost cap of up to $2.88 billion, with recovery of prudently-incurred costs subject to approval byforbearance agreement which suspends the Mississippi PSC. The Kemper IGCC was originally projected to be placed in service in May 2014. Mississippi Power placed the combined cycle and the associated common facilities portionrelated contractual rights of the Kemper IGCCparties while they continue restructuring negotiations, which could result in service in August 2014.
The initial production of syngas began on July 14, 2016 for gasifier "B" and on September 13, 2016 for gasifier "A." Mississippi Power achieved integrated operation of both gasifiers on January 29, 2017, including the production of electricity from syngas in both combustion turbines. During testing, the plant produced and captured CO2, and produced sulfuric acid and ammonia, each of acceptable quality under the related off-take agreements. However, Mississippi Power experienced numerous challenges during the extended start-up process to achieve integrated operationrescission of the gasifiers on a sustained basis. In May 2017, after achieving these milestones, Mississippi Power determined that a critical system component, the syngas coolers, would need replacement sooner than originally planned, which would require significant lead time and significant cost. In addition, the long-term natural gas price forecast has decreased significantly and the estimated cost of operating and maintaining the facility during the first five full years of operations has increased significantly since certification.
On June 21, 2017, the Mississippi PSC stated its intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC plant, and address all issues associated with the Kemper IGCC (Kemper Settlement Order).termination notice. The Kemper Settlement Order established a new docket for the purposes of pursuing a global settlement of costs of the Kemper IGCC (Kemper IGCC Settlement Docket). On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a process to suspend operations and start-up activities on the gasifier portion of the Kemper IGCC, given the uncertainty as to the future of the gasifier portion of the Kemper IGCC. Mississippi Power expects to continue to operate the combined cycle portion of the Kemper IGCC as it has done since August 2014.
Mississippi Power's Kemper IGCC 2010 project estimate totaled $2.97 billion, which included capped costs of $2.4 billion. At the time of project suspension in June 2017, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subject to the construction cost cap, and was net of the $137 million in additional grants from the DOE for the Kemper IGCC (Additional DOE Grants).
Mississippi Power recorded pre-tax charges to income for revisions to the cost estimate above the cost cap for the Kemper IGCC of $196 million ($121 million after tax) in the second quarter through May 31, 2017 and a total of $305 million ($188 million after tax) for year-to-date through May 31, 2017. In the aggregate, Mississippi Power incurred charges of $3.07 billion ($1.89 billion after tax) as a result of changes in the cost estimate above the cost cap for the Kemper IGCC through May 31, 2017. The May 31, 2017 cost estimate included approximately $175 million of estimated costs to be incurred beyond the then-estimated in-service date of June 30, 2017 that were expected to be subject to the $2.88 billion cost cap.
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs associated with the gasification portions of the plant and lignite mine. In the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's schedule for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the project are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred. In the aggregate, Mississippi Power recorded total pre-tax charges to income for the estimated probable losses on the Kemper IGCC totaling $34 million ($21 million after tax) for the third quarter 2017 and $3.2 billion ($2.2 billion after tax) for the nine months ended September 30, 2017.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC. The Kemper combined cycle balances as presented in the condensed balance sheet at September 30, 2017 include $1.1 billion in property, plant, and equipment, net of $80 million in accumulated depreciation; $15 million in materials and supplies; $10 million in other deferred charges and assets; and $113 million in regulatory assets, net of accumulated amortization of $63 million, of which $21 million is included in other regulatory assets, current and $92 million in other regulatory assets, deferred.
Rate Recovery of Kemper IGCC Costs
Given the variety of potential scenarios and the uncertainty of the outcome of future regulatory proceedings with the Mississippi PSC (and any subsequent related legal challenges), the ultimate outcome of the rate recovery matters discussed herein, including the resolution of legal challenges,this matter cannot now be determined at this time, but could result in further material charges that couldis not expected to have a material impact on Southern Company's and Mississippi Power's results of operations, financial condition, and liquidity.
Kemper IGCC Settlement Docket
On June 21, 2017,statements. Southern Company will continue to monitor the Mississippi PSC stated its intent to issue an order (which occurred on July 6, 2017) directing Mississippi Power to pursue a settlement under which the Kemper County energy facility would be operated as a natural gas plant, rather than an IGCC plant, and address all issues associated with the Kemper IGCC. The Kemper Settlement Order established the Kemper IGCC Settlement Docket. The Mississippi PSC requested any such proposed settlement agreement reflect: (i) at a minimum, no rate increase to Mississippi Power customers (with a rate reduction focused on residential customers encouraged); (ii) removal of all cost risk to customers associated with the Kemper IGCC gasifier and related assets; and (iii) modification or amendmentoperational performance of the CPCN forunderlying assets and evaluate the Kemper IGCC to allow only for ownership and operation of a natural gas facility.
On June 28, 2017, Mississippi Power notified the Mississippi PSC that it would begin a process to suspend operations and start-up activities on the gasifier portionability of the Kemper IGCC, given the uncertainty as to the future of the gasifier portion of the Kemper IGCC. Mississippi Power expectslessee to continue to operatemake the combined cycle portionrequired lease payments and meet its obligations associated with a future closure or retirement of the Kemper IGCC as it has done since August 2014. Atgeneration assets and associated properties, including the time of project suspension, the total cost estimate for the Kemper IGCC was approximately $7.38 billion, including approximately $5.95 billion of costs subjectdry ash landfill.
(G) INCOME TAXES
See Note 10 to the construction cost cap, and was netfinancial statements in Item 8 of the $137 million in Additional DOE Grants.Form 10-K for additional tax information.
Mississippi Power reachedCurrent and filed a settlement agreement on August 21, 2017 with certain parties (notDeferred Income Taxes
Tax Credit and Net Operating Loss Carryforwards
The utilization of each Registrant's estimated tax credit and state net operating loss carryforwards and related valuation allowances could be impacted by numerous factors, including the Mississippi Public Utilities Staff (MPUS)), which it believes metacquisition of additional renewable projects, the conditionspurchase of rights to additional PTCs of Plant Vogtle Units 3 and 4 pursuant to certain joint ownership agreements, an increase in Georgia Power's ownership interest in Plant Vogtle Units 3 and 4, changes in taxable income projections, and potential income tax rate changes. See Note (B) and Note 2 to the financial statements in Item 8 of the Kemper Settlement Order. The settlement agreement providesForm 10-K under "Georgia Power – Nuclear Construction" for an annual revenue requirementadditional information on Plant Vogtle Units 3 and 4.
65

Table of $126 million for Kemper IGCC-related costs, which would (i) be effective January 1, 2018, (ii) represent no rate increase for customers, and (iii) include no recovery for the costs associated with the gasifier portion of the Kemper IGCC in 2018 or at any future date. In addition, under the settlement agreement, the CPCN for the Kemper IGCC would be modifiedContentsIndex to limit the Kemper County energy facility to natural gas combined cycle operation and Mississippi Power would, in the future, file a reserve margin plan with the Mississippi PSC. The Mississippi PSC issued a scheduling order, as amended on October 5, 2017, noting Mississippi Power and the MPUS had failed to reach a joint stipulation and ordering a full hearing. The Mississippi PSC is expected to rule on an order resolving this matter in January 2018.Financial Statements
While the ultimate disposition of the gasification portions of the Kemper IGCC remains subject to the Mississippi PSC's jurisdiction, including the potential resolution of the matters addressed in the Kemper IGCC Settlement Docket, given the Mississippi PSC's stated intent regarding no further rate increase for the Kemper County energy facility, cost recovery of the gasification portions is no longer probable; therefore, Mississippi Power recorded an additional charge to income in June 2017 of $2.8 billion ($2.0 billion after tax), which includes estimated costs


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Effective Tax Rate
associated withSouthern Company's effective tax rate is typically lower than the gasification portionsstatutory rate due to employee stock plans' dividend deduction, non-taxable AFUDC equity at the traditional electric operating companies, flowback of excess deferred income taxes at the plantregulated utilities, and lignite mine. Infederal income tax benefits from ITCs and PTCs primarily at Southern Power.
Details of significant changes in the third quarter 2017, Mississippi Power recorded an additional charge of $34 million ($21 million after tax) for ongoing project costs during suspension, which includes estimated gasifier-related costs through December 31, 2017 to reflect the Mississippi PSC's scheduleeffective tax rate for the Kemper IGCC Settlement Docket, as well as mine-related costs and other suspension costs through September 30, 2017. Any extension of the suspension period beyond December 31, 2017 is currently estimated to result in additional suspension costs of approximately $5 million per month. In the event the gasification portions of the projectapplicable Registrants are ultimately canceled, additional pre-tax costs, which include mine and Kemper IGCC plant closure costs and contract termination costs, currently estimated at approximately $100 million to $200 million are expected to be incurred.provided herein.
As of September 30, 2017, Mississippi Power has recorded a total of approximately $1.3 billion in costs associated with the combined cycle portion of the Kemper IGCC including transmission and related regulatory assets, of which $0.8 billion is included in retail and wholesale rates. The $0.5 billion not included in current rates includes costs in excess of the original 2010 estimateSouthern Company
Southern Company's effective tax rate was 10.8% for the combined cycle portion of the facility, as well as the 15% that was previously contractedthree months ended March 31, 2023 compared to Cooperative Energy. Mississippi Power has calculated the revenue requirements resulting from these remaining costs, using reasonable assumptions for amortization periods, and expects them to be recovered through rates consistent with the Mississippi PSC's requested settlement conditions. The ultimate outcome will be determined by the Mississippi PSC in the Kemper IGCC Settlement Docket proceedings.
Prudence
On August 17, 2016, the Mississippi PSC issued an order establishing a discovery docket to manage all filings related to the prudence of the Kemper IGCC. On October 3, 2016, Mississippi Power made a required compliance filing, which included a review and explanation of differences between the Kemper IGCC project estimate set forth in the 2010 CPCN proceedings and the most recent Kemper IGCC project estimate, as well as comparisons of current cost estimates and current expected plant operational parameters to the estimates presented in the 2010 CPCN proceedings14.9% for the first five years after the Kemper IGCCcorresponding period in 2022. The effective tax rate decrease was primarily due to be placed in service. Compared to amounts presented in the 2010 CPCN proceedings, operations and maintenance expenses have increased an average of $105 million annually and maintenance capital has increased an average of $44 million annually for the first full five years of operations for the Kemper IGCC. Additionally, while the current estimated operational availability estimates reflect ultimate results similar to those presented in the 2010 CPCN proceedings, the ramp up period for the current estimates reflects a lower starting point and a slower escalation rate. On November 17, 2016, Mississippi Power submitted a supplemental filing to the October 3, 2016 compliance filing to present revised non-fuel operations and maintenance expense projections for the first year after the Kemper IGCC was to be placed in service. This supplemental filing included approximately $68 million in additional estimated operations and maintenance costs expected to be required to support the operations of the Kemper IGCC during that period.
Mississippi Power responded to numerous requests for information from interested parties in the discovery docket, which is now complete. Mississippi Power expects the Mississippi PSC to utilize this information in connection with the ultimate resolution of Kemper IGCC cost recovery.
Economic Viability Analysis
In the fourth quarter 2016, as a part of its Integrated Resource Plan process, the Southern Company system completed its regular annual updated fuel forecast, the 2017 Annual Fuel Forecast. This updated fuel forecast reflected significantly lower long-term estimated costs for natural gas than were previously projected. As a result of the updated long-term natural gas forecast, as well as the revised operating expense projections reflected in the discovery docket filings discussed above, on February 21, 2017, Mississippi Power filed an updated project economic viability analysis of the Kemper IGCC as required under the 2012 MPSC CPCN Order confirming authorization of the Kemper IGCC. The project economic viability analysis measures the life cycle economics of the Kemper IGCC compared to feasible alternatives, natural gas combined cycle generating units, under a variety of scenarios and considering fuel, operating and capital costs, and operating characteristics, as well as federal and state taxes and incentives. The reduction in the projected long-term natural gas prices in the 2017 Annual Fuel Forecast

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

and, to a lesser extent, the increase in the estimated Kemper IGCC operating costs, negatively impactflowback of certain excess deferred income taxes at Alabama Power in 2023, partially offset by the updated project economic viability analysis.flowback of certain excess deferred income taxes ending in 2022 at Georgia Power.
MississippiAlabama Power expects
Alabama Power's effective tax benefit rate was (0.8)% for the Mississippi PSCthree months ended March 31, 2023 compared to address this matteran effective tax rate of 23.3% for the corresponding period in connection with the Kemper IGCC Settlement Docket.
2015 Rate Case
On December 3, 2015, the Mississippi PSC issued the In-Service Asset Rate Order adopting in full a stipulation entered into between Mississippi Power and the MPUS regarding the Kemper IGCC assets that were commercially operational and currently providing service2022. The effective tax rate decrease was primarily due to customers (the transmission facilities, combined cycle, natural gas pipeline, and water pipeline) and other related costs. The In-Service Asset Rate Order provided for retail rate recovery of an annual revenue requirement of approximately $126 million, based on Mississippi Power's actual average capital structure, with a maximum common equity percentage of 49.733%, a 9.225% return on common equity, and actual embedded interest costs. The In-Service Asset Rate Order also included a prudence finding of all costsincrease in the stipulated revenue requirement calculation for the in-service assets. The stipulated revenue requirement excluded the costsflowback of the Kemper IGCC related to the 15% undivided interest that was previously projected to be purchased by Cooperative Energy but reserved Mississippi Power's right to seek recoverycertain excess deferred income taxes in a future proceeding. See "Termination of Proposed Sale of Undivided Interest" herein for additional information.
In 2011, the Mississippi PSC authorized Mississippi Power to defer all non-capital Kemper IGCC-related costs to a regulatory asset through the in-service date. In connection with the implementation of the In-Service Asset Order and wholesale rates, Mississippi Power began expensing certain ongoing project costs and certain retail debt carrying costs that previously were deferred and began amortizing certain regulatory assets associated with assets placed in service and consulting and legal fees. The amortization periods for these regulatory assets vary from two years to 10 years as set forth in the In-Service Asset Rate Order and the settlement agreement with wholesale customers. As of September 30, 2017, the balance associated with these regulatory assets was $113 million, of which $21 million is included in current assets. See "FERC Matters" herein for additional information related to the 2016 settlement agreement with wholesale customers.
The In-Service Asset Rate Order requires Mississippi Power to submit an annual true-up calculation of its actual cost of capital, compared to the stipulated total cost of capital, for the May 31, 2016 and 2017 calculations. At September 30, 2017, Mississippi Power's related regulatory liability totaled approximately $10 million.
As required by the In-Service Asset Rate Order, on June 5, 2017, Mississippi Power made a rate filing requesting to adjust the amortization schedules of the regulatory assets reviewed and determined prudent in the In-Service Asset Order in a manner that would not change customer rates or annual revenues. On June 28, 2017, the Mississippi PSC suspended this filing. On July 6, 2017, the Mississippi PSC issued an order requiring Mississippi Power to establish a regulatory liability account to maintain current rates related to the Kemper IGCC following the July 2017 completion of the amortization period for certain regulatory assets approved in the In-Service Asset Rate Order that would allow for subsequent refund if the Mississippi PSC deems the rates unjust and unreasonable. At September 30, 2017, the related regulatory liability totaled $7 million.
2013 MPSC Rate Order
In January 2013, Mississippi Power entered into a settlement agreement with the Mississippi PSC that was intended to establish the process for resolving matters regarding cost recovery related to the Kemper IGCC (2013 Settlement Agreement). Under the 2013 Settlement Agreement, Mississippi Power agreed to limit the portion of prudently-incurred Kemper IGCC costs to be included in retail rate base to the $2.4 billion certificated cost estimate, plus the cost of the lignite mine and equipment, the cost of the CO2 pipeline facilities, AFUDC, and certain general exceptions, including change of law, force majeure, and beneficial capital (construction cost increase demonstrated to produce efficiencies that result in a neutral or favorable effect on customers relative to the original proposal for the CPCN) (Cost Cap Exceptions), but excluding AFUDC, and any other costs permitted or determined to be excluded from the $2.88 billion cost cap by the Mississippi PSC. In March 2013, the Mississippi PSC issued a rate

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

order approving retail rate increases of 15% effective March 19, 2013 and 3% effective January 1, 2014, which collectively were designed to collect $156 million annually beginning in 2014 (2013 MPSC Rate Order) to be used to mitigate customer rate impacts after the Kemper IGCC was placed in service, based on a mirror CWIP methodology (Mirror CWIP rate).
On February 12, 2015, the Mississippi Supreme Court reversed the 2013 MPSC Rate Order and, on July 7, 2015, the Mississippi PSC ordered that the Mirror CWIP rate be terminated effective July 20, 2015 and required the fourth quarter 2015 refund of the $342 million previously collected, along with associated carrying costs of $29 million.
Because the 2013 MPSC Rate Order did not provide for the inclusion of CWIP in rate base as permitted by the Baseload Act, Mississippi Power continued to record AFUDC on the Kemper IGCC. Between the original May 2014 estimated in-service date and the June 2017 project suspension date, Mississippi Power recorded $494 million of AFUDC on the Kemper IGCC subject to the $2.88 billion cost cap and Cost Cap Exception amounts, of which $460 million related to the gasification portions of the Kemper IGCC.
Mississippi Power expects the Mississippi PSC to address this matter in connection with the Kemper IGCC Settlement Docket.
Lignite Mine and CO2 Pipeline Facilities
In conjunction with the Kemper IGCC, Mississippi Power owns the lignite mine and equipment and mineral reserves located around the Kemper IGCC site. The mine started commercial operation in June 2013.
In 2010, Mississippi Power executed a 40-year management fee contract with Liberty Fuels Company, LLC (Liberty Fuels), a wholly-owned subsidiary of The North American Coal Corporation, which developed, constructed, and is responsible for the mining operations through the end of the mine reclamation. As the mining permit holder, Liberty Fuels has a legal obligation to perform mine reclamation and Mississippi Power has a contractual obligation to fund all reclamation activities. In addition to the obligation to fund the reclamation activities, Mississippi Power provides working capital support to Liberty Fuels through cash advances for capital purchases, payroll, and other operating expenses. During the suspension period, these costs are approximately $2 million per month and are being recognized in income as incurred.2023. See Note 12 to the financial statements of Mississippiunder "Alabama Power under "Asset Retirement Obligations and Other Costs of Removal" and "Variable Interest Entities"– Excess Accumulated Deferred Income Tax Accounting Order" in Item 8 of the Form 10-K for additional information.
Georgia Power
Georgia Power's effective tax rate was 15.1% for the three months ended March 31, 2023 compared to 7.3% for the corresponding period in 2022. The effective tax rate increase was primarily due to the flowback of certain excess deferred income taxes ending in 2022.
Southern Power
Southern Power's effective tax benefit rate was (20.7)% for the three months ended March 31, 2023 compared to (80.0)% for the corresponding period in 2022. The effective tax rate increase was primarily due to higher pre-tax earnings and the impacts of noncontrolling interests.
(H) RETIREMENT BENEFITS
The Southern Company system has a qualified defined benefit, trusteed, pension plan covering substantially all employees, with the exception of employees at PowerSecure. The qualified pension plan is funded in accordance with requirements of the Employee Retirement Income Security Act of 1974, as amended (ERISA). No mandatory contributions to the qualified pension plan are anticipated for the year ending December 31, 2023. The Southern Company system also provides certain non-qualified defined benefits for a select group of management and highly compensated employees, which are funded on a cash basis. In addition, Mississippi Power constructed the CO2 pipeline for the planned transport of captured CO2 for use in enhanced oil recovery. Mississippi Power entered into agreements with Denbury Onshore (Denbury) and Treetop Midstream Services, LLC (Treetop), pursuant to which Denbury would purchase 70% of the CO2 captured from the Kemper IGCC and Treetop would purchase 30% of the CO2 captured from the Kemper IGCC. On June 3, 2016, Mississippi Power cancelled its contract with Treetop and amended its contract with Denbury to reflect, among other things, Denbury's agreement to purchase 100% of the CO2 captured from the Kemper IGCC and an initial contract term of 16 years. Denbury has the right to terminate the contract at any time because Mississippi Power did not place the Kemper IGCC in service by July 1, 2017.
The ultimate outcome of these matters cannot be determined at this time.
Termination of Proposed Sale of Undivided Interest
In 2010 and as amended in 2012, Mississippi Power and Cooperative Energy (formerly known as SMEPA) entered into an agreement whereby Cooperative Energy agreed to purchase a 15% undivided interest in the Kemper IGCC. On May 20, 2015, Cooperative Energy notified Mississippi Power of its termination of the agreement. Mississippi Power previously received a total of $275 million of deposits from Cooperative Energy that were required to be returned to Cooperative Energy with interest. On June 3, 2015, Southern Company pursuantsystem provides certain medical care and life insurance benefits for retired employees through other postretirement benefit plans. The traditional electric operating companies fund other postretirement trusts to its guarantee obligation, returned approximately $301 million to Cooperative Energy. Subsequently, Mississippi Power issued a promissory note in the aggregate principal amount of approximately $301 million toextent required by their respective regulatory commissions. Southern Company which was repaid in June 2017.Gas has a separate unfunded supplemental retirement health care plan that provides medical care and life insurance benefits to employees of discontinued businesses.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Litigation
On April 26, 2016, a complaint against Mississippi Power was filed in Harrison County Circuit Court (Circuit Court) by Biloxi Freezing & Processing Inc., Gulfside Casino Partnership, and John Carlton Dean, which was amended and refiled on July 11, 2016 to include, among other things, Southern Company as a defendant. The individual plaintiff alleges that Mississippi Power and Southern Company violated the Mississippi Unfair Trade Practices Act. All plaintiffs have alleged that Mississippi Power and Southern Company concealed, falsely represented, and failed to fully disclose important facts concerning the cost and schedule of the Kemper IGCC and that these alleged breaches have unjustly enriched Mississippi Power and Southern Company. The plaintiffs seek unspecified actual damages and punitive damages; ask the Circuit Court to appoint a receiver to oversee, operate, manage, and otherwise control all affairs relating to the Kemper IGCC; ask the Circuit Court to revoke any licenses or certificates authorizing Mississippi Power or Southern Company to engage in any business related to the Kemper IGCC in Mississippi; and seek attorney's fees, costs, and interest. The plaintiffs also seek an injunction to prevent any Kemper IGCC costs from being charged to customers through electric rates. On June 23, 2017, the Circuit Court ruled in favor of motions by Southern Company and Mississippi Power and dismissed the case. On July 7, 2017, the plaintiffs filed notice of an appeal.
On June 9, 2016, Treetop, Greenleaf CO2 Solutions, LLC (Greenleaf), Tenrgys, LLC, Tellus Energy, LLC, WCOA, LLC, and Tellus Operating Group filed a complaint against Mississippi Power, Southern Company, and SCS in the state court in Gwinnett County, Georgia. The complaint relates to the cancelled CO2 contract with Treetop and alleges fraudulent misrepresentation, fraudulent concealment, civil conspiracy, and breach of contract on the part of Mississippi Power, Southern Company, and SCS and seeks compensatory damages of $100 million, as well as unspecified punitive damages. Southern Company, Mississippi Power, and SCS moved to compel arbitration pursuant to the terms of the CO2 contract, which the court granted on May 4, 2017. On June 28, 2017, Treetop, Greenleaf, Tenrgys, LLC, Tellus Energy, LLC, WCOA, LLC, and Tellus Operating Group filed a claim for arbitration requesting $500 million in damages.
Southern Company and Mississippi Power believe these legal challenges have no merit; however, an adverse outcome in these proceedings could have a material impact on Southern Company's and Mississippi Power's results of operations, financial condition, and liquidity. Southern Company and Mississippi Power will vigorously defend themselves in these matters, and the ultimate outcome of these matters cannot be determined at this time.
Baseload Act
In 2008, the Baseload Act was signed by the Governor of Mississippi. The Baseload Act authorizes, but does not require, the Mississippi PSC to adopt a cost recovery mechanism that includes in retail base rates, prior to and during construction, all or a portion of the prudently-incurred pre-construction and construction costs incurred by a utility in constructing a base load electric generating plant. Prior to the passage of the Baseload Act, such costs would traditionally be recovered only after the plant was placed in service. The Baseload Act also provides for periodic prudence reviews by the Mississippi PSC and prohibits the cancellation of any such generating plant without the approval of the Mississippi PSC. In the event of cancellation of the construction of the plant without approval of the Mississippi PSC, the Baseload Act authorizes the Mississippi PSC to make a public interest determination as to whether and to what extent the utility will be afforded rate recovery or implement credits, refunds, or rebates to customers for costs incurred in connection with such cancelled generating plant.
Income Tax Matters
See Note 311 to the financial statements of Southern Company and Mississippi Power under "Integrated Coal Gasification Combined Cycle – Bonus Depreciation," " – Investment Tax Credits," and " – Section 174 Research and Experimental Deduction" in Item 8 of the Form 10-K and Note (G) under "Section 174 Research and Experimental Deduction" for additional information on bonus depreciation, investment tax credits,information.
On each Registrant's condensed statements of income, the service cost component of net periodic benefit costs is included in other operations and maintenance expenses and all other components of net periodic benefit costs are included in other income (expense), net. Components of the Section 174 researchnet periodic benefit costs for the three months ended March 31, 2023 and experimental deduction.2022 are presented in the following tables.

66

Table of ContentsIndex to Financial Statements

NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2023
Pension Plans
Service cost$69 $16 $17 $$$
Interest cost156 36 48 11 
Expected return on plan assets(307)(74)(96)(14)(4)(22)
Amortization:
Prior service costs— — — — — (1)
Regulatory asset— — — — — 
Net (gain) loss— — (1)
Net periodic pension income$(74)$(20)$(28)$(4)$— $(3)
Postretirement Benefits
Service cost$$$$— $— $— 
Interest cost18 — 
Expected return on plan assets(21)(8)(7)(1)— (2)
Amortization:
Regulatory asset— — — — — 
Net gain(3)(1)(1)— — (1)
Net periodic postretirement benefit cost (income)$(2)$(4)$(1)$— $— $
Bonus Depreciation
67

Table of ContentsIndex to Financial Statements
All projected tax benefits previously received for bonus depreciation related to the Kemper IGCC were repaid in connection with third quarter 2017 estimated tax payments. If the suspension of the Kemper IGCC start-up activities ultimately results in an abandonment for income tax purposes, the related deduction would be claimed in the year of the abandonment. See Note (G) for additional information. The ultimate outcome of this matter cannot be determined at this time.
Section 174 Research and Experimental Deduction
Southern Company, on behalf of Mississippi Power, has reflected deductions for research and experimental (R&E) expenditures related to the Kemper IGCC in its federal income tax calculations since 2013 and filed amended federal income tax returns for 2008 through 2013 to also include such deductions. In December 2016, Southern Company and the IRS reached a proposed settlement, which was approved on September 8, 2017 by the U.S. Congress Joint Committee on Taxation, resolving a methodology for these deductions. See Note (G) for additional information.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern PowerSouthern Company Gas
(in millions)
Three Months Ended March 31, 2022
Pension Plans
Service cost$103 $25 $26 $$$
Interest cost102 24 31 
Expected return on plan assets(316)(77)(99)(15)(4)(22)
Amortization:
Prior service costs— — — — — (1)
Regulatory asset— — — — — 
Net loss60 16 18 
Net periodic pension cost (income)$(51)$(12)$(24)$(3)$$(1)
Postretirement Benefits
Service cost$$$$— $— $— 
Interest cost10 — — 
Expected return on plan assets(20)(8)(7)— — (2)
Amortization:
Regulatory asset— — — — — 
Net periodic postretirement benefit cost (income)$(4)$(4)$(1)$— $— $
(C)FAIR VALUE MEASUREMENTS
As
68

Table of September 30, 2017,ContentsIndex to Financial Statements

NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
(I) FAIR VALUE MEASUREMENTS
At March 31, 2023, assets and liabilities measured at fair value on a recurring basis during the period, together with their associated level of the fair value hierarchy, were as follows:
Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Southern Company
Assets:
Energy-related derivatives(a)
$$100 $— $— $104 
Interest rate derivatives— — — 
Investments in trusts:(b)(c)
Domestic equity680 192 — — 872 
Foreign equity138 162 — — 300 
U.S. Treasury and government agency securities— 316 — — 316 
Municipal bonds— 48 — — 48 
Pooled funds – fixed income— — — 
Corporate bonds— 403 — — 403 
Mortgage and asset backed securities— 90 — — 90 
Private equity— — — 160 160 
Cash and cash equivalents— — — 
Other40 12 — 61 
Cash equivalents433 13 — — 446 
Other investments29 — 46 
Total$1,306 $1,374 $$169 $2,857 
Liabilities:
Energy-related derivatives(a)
$40 $354 $— $— $394 
Interest rate derivatives— 261 — — 261 
Foreign currency derivatives— 218 — — 218 
Contingent consideration— — 12 — 12 
Other— 13 — — 13 
Total$40 $846 $12 $— $898 
69

 Fair Value Measurements Using:  
As of September 30, 2017:
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 Net Asset Value as a Practical Expedient (NAV) Total
 (in millions)
Southern Company         
Assets:         
Energy-related derivatives(a)(b)
$231
 $184
 $
 $
 $415
Interest rate derivatives
 5
 
 
 5
Foreign currency derivatives
 103
 
 
 103
Nuclear decommissioning trusts(c)
752
 1,004
 
 26
 1,782
Cash equivalents1,271
 
 
 
 1,271
Other investments9
 
 1
 
 10
Total$2,263
 $1,296
 $1
 $26
 $3,586
Liabilities:         
Energy-related derivatives(a)(b)
$265
 $146
 $
 $
 $411
Interest rate derivatives
 24
 
 
 24
Foreign currency derivatives
 23
 
 
 23
Contingent consideration
 
 20
 
 20
Total$265
 $193
 $20
 $
 $478
          
Alabama Power         
Assets:         
Energy-related derivatives$
 $9
 $
 $
 $9
Nuclear decommissioning trusts:(d)
        

Domestic equity422
 81
 
 
 503
Foreign equity60
 57
 
 
 117
U.S. Treasury and government agency securities
 27
 
 
 27
Corporate bonds19
 150
 
 
 169
Mortgage and asset backed securities
 18
 
 
 18
Private Equity
 
 
 26
 26
Other
 8
 
 
 8
Cash equivalents808
 
 
 
 808
Total$1,309
 $350
 $
 $26
 $1,685
Liabilities:         
Energy-related derivatives$
 $7
 $
 $
 $7
Table of ContentsIndex to Financial Statements


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Alabama Power
Assets:
Energy-related derivatives$— $32 $— $— $32 
Nuclear decommissioning trusts:(b)
Domestic equity404 185 — — 589 
Foreign equity138 — — — 138 
U.S. Treasury and government agency securities— 19 — — 19 
Municipal bonds— — — 
Corporate bonds— 223 — — 223 
Mortgage and asset backed securities— 22 — — 22 
Private equity— — — 160 160 
Other— — 16 
Cash equivalents193 13 — — 206 
Other investments— 29 — — 29 
Total$742 $524 $— $169 $1,435 
Liabilities:
Energy-related derivatives$— $96 $— $— $96 
Georgia Power
Assets:
Energy-related derivatives$— $22 $— $— $22 
Nuclear decommissioning trusts:(b)(c)
Domestic equity276 — — 277 
Foreign equity— 161 — — 161 
U.S. Treasury and government agency securities— 297 — — 297 
Municipal bonds— 47 — — 47 
Corporate bonds— 180 — — 180 
Mortgage and asset backed securities— 68 — — 68 
Other33 12 — — 45 
Total$309 $788 $— $— $1,097 
Liabilities:
Energy-related derivatives$— $132 $— $— $132 
Interest rate derivatives— — — 
Total$— $133 $— $— $133 
70

 Fair Value Measurements Using:  
As of September 30, 2017:
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 Net Asset Value as a Practical Expedient (NAV) Total
 (in millions)
Georgia Power         
Assets:         
Energy-related derivatives$
 $18
 $
 $
 $18
Interest rate derivatives
 1
 
 
 1
Nuclear decommissioning trusts:(d) (e)
         
Domestic equity235
 1
 
 
 236
Foreign equity
 156
 
 
 156
U.S. Treasury and government agency securities
 225
 
 
 225
Municipal bonds
 64
 
 
 64
Corporate bonds
 160
 
 
 160
Mortgage and asset backed securities
 38
 
 
 38
Other16
 19
 
 
 35
Cash equivalents112
 
 
 
 112
Total$363
 $682
 $
 $
 $1,045
Liabilities:         
Energy-related derivatives$
 $11
 $
 $
 $11
Interest rate derivatives
 3
 
 
 3
Total$
 $14
 $
 $
 $14
          
Gulf Power         
Assets:         
Cash equivalents$21
 $
 $
 $
 $21
Liabilities:         
Energy-related derivatives$
 $22
 $
 $
 $22
          
Mississippi Power         
Assets:         
Energy-related derivatives$
 $3
 $
 $
 $3
Interest rate derivatives
 2
 
 
 2
Cash equivalents209
 
 
 
 209
Total$209
 $5
 $
 $
 $214
Liabilities:         
Energy-related derivatives$
 $7
 $
 $
 $7
          
Table of ContentsIndex to Financial Statements


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Fair Value Measurements Using:
At March 31, 2023Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Net Asset Value as a Practical Expedient (NAV)Total
(in millions)
Mississippi Power
Assets:
Energy-related derivatives$— $35 $— $— $35 
Cash equivalents— — — 
Total$$35 $— $— $38 
Liabilities:
Energy-related derivatives$— $62 $— $— $62 
Southern Power
Assets:
Energy-related derivatives$— $$— $— $
Cash equivalents13 — — — 13 
Total$13 $$— $— $18 
Liabilities:
Energy-related derivatives$— $14 $— $— $14 
Foreign currency derivatives— 47 — — 47 
Contingent consideration— — 12 — 12 
Other— 13 — — 13 
Total$— $74 $12 $— $86 
Southern Company Gas
Assets:
Energy-related derivatives(a)
$$$— $— $10 
Interest rate derivatives— — — 
Non-qualified deferred compensation trusts:
Domestic equity— — — 
Foreign equity— — — 
Pooled funds – fixed income— — — 
Cash equivalents— — — 
Cash equivalents and restricted cash55 — — — 55 
Total$61 $21 $— $— $82 
Liabilities:
Energy-related derivatives(a)
$40 $50 $— $— $90 
Interest rate derivatives— 72 — — 72 
Total$40 $122 $— $— $162 
(a)Excludes cash collateral of $60 million.
(b)Excludes receivables related to investment income, pending investment sales, payables related to pending investment purchases, and currencies. See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
71

Table of ContentsIndex to Financial Statements

NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
 Fair Value Measurements Using:  
As of September 30, 2017:
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 Net Asset Value as a Practical Expedient (NAV) Total
 (in millions)
Southern Power         
Assets:         
Energy-related derivatives$
 $9
 $
 $
 $9
Foreign currency derivatives
 103
 
 
 103
Cash equivalents90
 
 
 
 90
Total$90
 $112
 $
 $
 $202
Liabilities:         
Energy-related derivatives$
 $4
 $
 $
 $4
Foreign currency derivatives
 23
 
 
 23
Contingent consideration
 
 20
 
 20
Total$

$27

$20

$

$47
          
Southern Company Gas         
Assets:         
Energy-related derivatives(a)(b)
$231
 $145
 $
 $
 $376
Liabilities:         
Energy-related derivatives(a)(b)
$265
 $95
 $
 $
 $360
(c)Includes investment securities pledged to creditors and collateral received and excludes payables related to the securities lending program. At March 31, 2023, approximately $37 million of the fair market value of Georgia Power's nuclear decommissioning trust funds' securities were on loan to creditors under the funds' managers' securities lending program. See Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.
(a)Excludes $13 million associated with certain weather derivatives accounted for based on intrinsic value rather than fair value.
(b)Excludes cash collateral of $76 million.
(c)For additional detail, see the nuclear decommissioning trusts sections for Alabama Power and Georgia Power in this table.
(d)Excludes receivables related to investment income, pending investment sales, payables related to pending investment purchases, and currencies.
(e)Includes the investment securities pledged to creditors and collateral received and excludes payables related to the securities lending program. As of September 30, 2017, approximately $66 million of the fair market value of Georgia Power's nuclear decommissioning trust funds' securities were on loan to creditors under the funds' managers' securities lending program.
Southern Company, Alabama Power, and Georgia Power continue to elect the option to fair value investment securities held in the nuclear decommissioning trust funds. The fair value of the funds, at Southern Company, including reinvested interest and dividends and excluding the funds' expenses, increased (decreased) by $50 million and $168 million, respectively,the amounts shown in the table below for the three and nine months ended September 30, 2017,March 31, 2023 and by $49 million and $116 million, respectively, for the three and nine months ended September 30, 2016. Alabama Power2022. The changes were recorded increases in fair value of $25 million and $87 million, respectively, for the three and nine months ended September 30, 2017 and $26 million and $66 million, respectively, for the three and nine months ended September 30, 2016 as a change into the regulatory assets and liabilities related to its AROs.AROs for Georgia Power recorded increases in fair value of $25 million and $81 million, respectively, for the three and nine months ended September 30, 2017 and $23 million and $50 million, respectively, for the three and nine months ended September 30, 2016 as a change in its regulatory asset related to its AROs.Alabama Power, respectively.
Three Months Ended
Fair value increases (decreases)March 31, 2023March 31, 2022
(in millions)
Southern Company$102 $(150)
Alabama Power45 (67)
Georgia Power57 (83)
Valuation Methodologies
The energy-related derivatives primarily consist of exchange-traded and over-the-counter financial products for natural gas and physical power products, including, from time to time, basis swaps. These are standard products used within the energy industry and are valued using the market approach. The inputs used are mainly from

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

observable market sources, such as forward natural gas prices, power prices, implied volatility, and overnight index swap interest rates. Interest rate derivatives are also standard over-the-counter products that are valued using observable market data and assumptions commonly used by market participants. The fair value of interest rate derivatives reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future interest rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and occasionally, implied volatility of interest rate options. The fair value of cross-currency swaps reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future foreign currency exchange rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and discount rates. The interest rate derivatives and cross-currency swaps are categorized as Level 2 under Fair Value Measurements as these inputs are based on observable data and valuations of similar instruments. See Note (H)(J) for additional information on how these derivatives are used.
The NRC requires licensees of commissioned nuclear power reactors to establish a plan for providing reasonable assurance of funds for future decommissioning. For fair value measurements of the investments within the nuclear decommissioning trusts and the non-qualified deferred compensation trusts, external pricing vendors are designated for each asset class with each security specifically assigned a primary pricing source. For investments held within commingled funds, fair value is determined at the end of each business day through the net asset value, which is established by obtaining the underlying securities' individual prices from the primary pricing source. A market price secured from the primary source vendor is then evaluated by management in its valuation of the assets within the trusts. As a general approach, fixed income market pricing vendors gather market data (including indices and market research reports) and integrate relative credit information, observed market movements, and sector news into proprietary pricing models, pricing systems, and mathematical tools. Dealer quotes and other market information, including live trading levels and pricing analysts' judgments, are also obtained when available.
The NRC requires licensees of commissioned nuclear power reactors to establish a plan for providing reasonable assurance of funds for future decommissioning. See Note 16 to the financial statements of Southern Company, Alabama Power, and Georgia Power under "Nuclear Decommissioning" in Item 8 of the Form 10-K for additional information.
72

Table of ContentsIndex to Financial Statements

NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Southern Power has contingent payment obligations related to certain acquisitions whereby Southern Powerit is primarily obligated to make generation-based payments to the seller, over a period ranging from 10 to 30 years, beginningwhich commenced at the commercial operation date.of the respective facility and continue through 2026. The obligation isobligations are categorized as Level 3 under Fair Value Measurements as the fair value is determined using significant unobservable inputs for the forecasted facility generation in MW-hours, as well as other inputs such as a fixed dollar amount per MW-hour, and a discount rate, and is evaluated periodically.rate. The fair value of contingent consideration reflects the net present value of expected payments and any periodic change arising from forecasted generation is expected to be immaterial.
Southern Power also has payment obligations through 2040 whereby it must reimburse the transmission owners for interconnection facilities and network upgrades constructed to support connection of a Southern Power generating facility to the transmission system. The obligations are categorized as Level 2 under Fair Value Measurements as the fair value is determined using observable inputs for the contracted amounts and reimbursement period, as well as a discount rate. The fair value of the obligations reflects the net present value of expected payments.
"Other investments" includeprimarily includes investments that are not traded in the open market. The fair valuemarket that have maturities greater than 90 days, which are categorized as Level 2 under Fair Value Measurements and are comprised of these investments has been determined based on market factors including comparable multiples and the expectations regarding cash flows and business plan executions.corporate bonds, bank certificates of deposit, treasury bonds, and/or agency bonds.
As of September 30, 2017,At March 31, 2023, the fair value measurements of private equitymarket investments held in theAlabama Power's nuclear decommissioning trusttrusts that are calculated at net asset value per share (or its equivalent) as a practical expedient as well astotaled $169 million and unfunded commitments related to the nature and risks of thoseprivate market investments were as follows:
As of September 30, 2017:
Fair
Value
 
Unfunded
Commitments
 
Redemption
Frequency
 
Redemption
Notice Period
 (in millions)    
Southern Company$26
 $24
 Not Applicable Not Applicable
Alabama Power$26
 $24
 Not Applicable Not Applicable
totaled $75 million. Private equity fundsmarket investments include a fund-of-funds that invests in high-quality private equity funds across several market sectors, funds that invest in real estate assets, and a fund that acquires companies to create resale value.private credit fund. Private equitymarket funds do not have redemption rights. Distributions from these funds will be received as the underlying investments in the funds are liquidated. Liquidations are expected to occur at various times over the next 10 years.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

As of September 30, 2017,At March 31, 2023, other financial instruments for which the carrying amount did not equal fair value were as follows:
Southern
Company
Alabama PowerGeorgia PowerMississippi PowerSouthern Power
Southern Company Gas(*)
(in billions)
Long-term debt, including securities due within one year:
Carrying amount$56.1 $10.6 $14.9 $1.5 $3.0 $7.5 
Fair value51.6 9.5 13.7 1.3 2.9 6.7 
 
Carrying
Amount
 
Fair
Value
 (in millions)
Long-term debt, including securities due within one year:   
Southern Company$47,269
 $49,348
Alabama Power$7,404
 $8,031
Georgia Power$11,713
 $12,237
Gulf Power$1,292
 $1,352
Mississippi Power$2,123
 $2,117
Southern Power$5,810
 $5,916
Southern Company Gas$5,862
 $6,230
(*)The long-term debt of Southern Company Gas is recorded at amortized cost, including the fair value adjustments at the effective date of the 2016 merger with Southern Company. Southern Company Gas amortizes the fair value adjustments over the remaining lives of the respective bonds, the latest being through 2043.
The fair values are determined using Level 2 measurements and are based on quoted market prices for the same or similar issues or on the current rates available to Southern Company, Alabama Power, Georgia Power, Gulf Power, Mississippi Power, Southern Power, and Southern Company Gas.
(D)STOCKHOLDERS' EQUITY
Earnings per Share
For Southern Company, the only difference in computing basic and diluted earnings per share is attributable to awards outstanding under the stock option and performance share plans. See Note 8 to the financial statements of Southern Company in Item 8 of the Form 10-K for information on the stock option and performance share plans. The effect of both stock options and performance share award units was determined using the treasury stock method. Shares used to compute diluted earnings per share were as follows:Registrants.
73
 Three Months Ended September 30, 2017Three Months Ended September 30, 2016Nine Months Ended September 30, 2017Nine Months Ended September 30, 2016
 (in millions)
As reported shares1,003
968
998
940
Effect of options and performance share award units7
7
7
5
Diluted shares1,010
975
1,005
945

Table of ContentsIndex to Financial Statements
Stock options and performance share award units that were not included in the diluted earnings per share calculation because they were anti-dilutive were immaterial for the three and nine months ended September 30, 2017 and 2016.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Changes in Stockholders' Equity(J) DERIVATIVES
The following table presents year-to-date changes in stockholders' equity of Southern Company:
 
Number of
Common Shares
 Common
Stockholders'
Equity
Preferred and
Preference
Stock of
Subsidiaries
 Total
Stockholders'
Equity
 IssuedTreasury 
Noncontrolling Interests(*)
 (in thousands) (in millions)
Balance at December 31, 2016991,213
(819) $24,758
$609
$1,245
$26,612
Consolidated net income attributable to Southern Company

 347


347
Other comprehensive income (loss)

 (2)

(2)
Stock issued13,308

 613


613
Stock-based compensation

 97


97
Cash dividends on common stock

 (1,716)

(1,716)
Preference stock redemption

 
(150)
(150)
Contributions from noncontrolling interests

 

77
77
Distributions to noncontrolling interests

 

(87)(87)
Net income attributable to noncontrolling interests

 

45
45
Reclassification from redeemable noncontrolling interests

 

114
114
Other
(75) (15)3
1
(11)
Balance at September 30, 20171,004,521
(894) $24,082
$462
$1,395
$25,939
        
Balance at December 31, 2015915,073
(3,352) $20,592
$609
$781
$21,982
Consolidated net income attributable to Southern Company

 2,251


2,251
Other comprehensive income (loss)

 (95)

(95)
Stock issued65,725
2,599
 3,265


3,265
Stock-based compensation

 94


94
Cash dividends on common stock

 (1,553)

(1,553)
Contributions from noncontrolling interests

 

357
357
Distributions to noncontrolling interests

 

(21)(21)
Purchase of membership interests from noncontrolling interests

 

(129)(129)
Net income attributable to noncontrolling interests

 

36
36
Other
(46) (7)

(7)
Balance at September 30, 2016980,798
(799) $24,547
$609
$1,024
$26,180
(*)Related to Southern Power Company and excludes redeemable noncontrolling interests. In April 2017, approximately $114 million was reclassified from redeemable noncontrolling interests to noncontrolling interests, included in stockholder's equity, due to the expiration of SunPower Corp's option to require Southern Power to purchase its membership interests in one of the solar partnerships. See Note 10 to the financial statements of Southern Power in Item 8 of the Form 10-K for additional information.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

(E)FINANCING
Going Concern
As of September 30, 2017, Mississippi Power's current liabilities exceeded current assets by approximately $769 million primarily due to approximately $935 million that will be required through September 30, 2018 to fund maturities of long-term debt and $4 million that will be required to fund maturities of short-term debt. In addition, Mississippi Power has $40 million of tax-exempt variable rate demand obligations that are supported by short-term credit facilities and $50 million of fixed rate pollution control revenue bonds that are required to be remarketed over the next 12 months. Mississippi Power intends to utilize operating cash flows, lines of credit, and bank term loans, as market conditions permit, as well as, under certain circumstances, commercial paper and/or equity contributions and/or loans from Southern Company to fund Mississippi Power's short-term capital needs. Specifically, Mississippi Power has been informed by Southern Company that in the event sufficient funds are not available from external sources, Southern Company intends to provide Mississippi Power with loans and/or equity contributions sufficient to fund the remaining indebtedness scheduled to mature and other cash needs over the next 12 months. Therefore, Mississippi Power's financial statement presentation contemplates continuation of Mississippi Power as a going concern as a result of Southern Company's anticipated ongoing financial support of Mississippi Power. For additional information, see Notes 1 and 6 to the financial statements of Mississippi Power under "Recently Issued Accounting Standards" and "Going Concern," respectively, in Item 8 of the Form 10-K and Note (B) under "Integrated Coal Gasification Combined Cycle."
DOE Loan Guarantee Borrowings
See Note 6 to the financial statements of Southern Company and Georgia Power in Item 8 of the Form 10-K for additional information regarding Georgia Power's Loan Guarantee Agreement with the DOE and related multi-advance term loan facility (FFB Credit Facility) with the FFB.
On July 27, 2017, Georgia Power entered into an amendment to the Loan Guarantee Agreement (LGA Amendment) in connection with the DOE's consent to Georgia Power's entry into the Services Agreement and the related intellectual property licenses (IP Licenses).
Under the terms of the Loan Guarantee Agreement, upon termination of the Vogtle 3 and 4 Agreement, further advances are conditioned upon the DOE's approval of any agreements entered into in replacement of the Vogtle 3 and 4 Agreement. Under the terms of the LGA Amendment, Georgia Power will not request any advances unless and until such time as Georgia Power has (i) completed the cost-to-complete and cancellation cost assessments prepared as a result of the bankruptcy of the EPC Contractor (Cost Assessments) and made a determination to continue construction of Plant Vogtle Units 3 and 4, (ii) delivered to the DOE an updated project schedule, construction budget, and other information, (iii) entered into one or more agreements with a construction contractor or contractors that will be primarily responsible for construction of Plant Vogtle Units 3 and 4 and such agreements have been approved by the DOE (together with the Services Agreement and the IP Licenses, the Replacement EPC Arrangements), and (iv) entered into a further amendment to the Loan Guarantee Agreement with the DOE to reflect the Replacement EPC Arrangements.
Upon satisfaction of the conditions described above, advances may be requested under the FFB Credit Facility on a quarterly basis through 2020. The final maturity date for each advance under the FFB Credit Facility is February 20, 2044. Interest is payable quarterly and principal payments will begin on February 20, 2020. Borrowings under the FFB Credit Facility will bear interest at the applicable U.S. Treasury rate plus a spread equal to 0.375%.
In addition to the conditions described above, future advances are subject to satisfaction of customary conditions, as well as certification of compliance with the requirements of the Title XVII Loan Guarantee Program, accuracy of project-related representations and warranties, delivery of updated project-related information, absence of liens on Georgia Power's ownership interest in Plant Vogtle Units 3 and 4 other than permitted liens, evidence of compliance with the prevailing wage requirements of the Davis-Bacon Act of 1931, as amended, and certification from the DOE's consulting engineer that proceeds of the advances are used to reimburse Eligible Project Costs.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Under the Loan Guarantee Agreement, Georgia Power is subject to customary borrower affirmative and negative covenants and events of default. In addition, Georgia Power is subject to project-related reporting requirements and other project-specific covenants and events of default.
In the event certain mandatory prepayment events occur, the FFB's commitment to make further advances under the FFB Credit Facility will terminate and Georgia Power will be required to prepay the outstanding principal amount of all borrowings under the FFB Credit Facility over a period of five years (with level principal amortization). Among other things, these mandatory prepayment events include (i) the termination of the Services Agreement or rejection of the Services Agreement in bankruptcy if Georgia Power does not maintain access to intellectual property rights under the IP Licenses; (ii) a decision by Georgia Power not to continue construction of Plant Vogtle Units 3 and 4; (iii) a failure by Georgia Power to complete the Cost Assessments or enter into Replacement EPC Arrangements by December 31, 2017; (iv) cancellation of Plant Vogtle Units 3 and 4 by the Georgia PSC, or by Georgia Power if authorized by the Georgia PSC; and (v) cost disallowances by the Georgia PSC that could have a material adverse effect on completion of Plant Vogtle Units 3 and 4 or Georgia Power's ability to repay the outstanding borrowings under the FFB Credit Facility. Under certain circumstances, insurance proceeds and any proceeds from an event of taking must be applied to immediately prepay outstanding borrowings under the FFB Credit Facility. In addition, under certain circumstances Georgia Power may be required to make additional prepayments in connection with its receipt of payments under the Guarantee Settlement Agreement or from the EPC Contractor under the Vogtle 3 and 4 Agreement. Georgia Power also may voluntarily prepay outstanding borrowings under the FFB Credit Facility. Under the FFB Credit Facility, any prepayment (whether mandatory or optional) will be made with a make-whole premium or discount, as applicable.
On September 28, 2017, the DOE issued a conditional commitment to Georgia Power for up to approximately $1.67 billion of additional guaranteed loans under the Loan Guarantee Agreement. Final approval and issuance of these additional loan guarantees by the DOE cannot be assured and are subject to the negotiation of definitive agreements, completion of due diligence by the DOE, receipt of any necessary regulatory approvals, and satisfaction of other conditions.
See Note (B) under "Regulatory MattersGeorgia PowerNuclear Construction" for additional information regarding Plant Vogtle Units 3 and 4.
Bank Credit Arrangements
Bank credit arrangements provide liquidity support to the registrants' commercial paper borrowings and the traditional electric operating companies' pollution control revenue bonds. The amount of variable rate pollution control revenue bonds of the traditional electric operating companies outstanding requiring liquidity support as of September 30, 2017 was approximately $1.5 billion (comprised of approximately $854 million at Alabama Power, $550 million at Georgia Power, $82 million at Gulf Power, and $40 million at Mississippi Power). In June 2017, Georgia Power remarketed $318 million of variable rate pollution control bonds in index rate modes, reducing the liquidity support utilized under Georgia Power's bank credit arrangement. In addition, at September 30, 2017, the traditional electric operating companies had approximately $699 million (comprised of approximately $509 million at Georgia Power, $140 million at Gulf Power, and $50 million at Mississippi Power) of pollution control revenue bonds outstanding that were required to be remarketed within the next 12 months. Subsequent to September 30, 2017, $40 million of these pollution control revenue bonds of Georgia Power which were in an index rate mode were remarketed to the public in a long-term fixed rate mode. See Note 6 to the financial statements of each registrant under "Bank Credit Arrangements" in Item 8 of the Form 10-K and "Financing Activities" herein for additional information.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

The following table outlines the committed credit arrangements by company as of September 30, 2017:
 Expires   
Executable Term
Loans
 
Expires Within
One Year
Company20172018201920202022 Total Unused 
One
Year
 
Two
Years
 
Term
Out
 
No Term
Out
 (in millions)
Southern Company(a)
$
$
$
$
$2,000
 $2,000
 $2,000
 $
 $
 $
 $
Alabama Power
35

500
800
 1,335
 1,335
 
 
 
 35
Georgia Power



1,750
 1,750
 1,732
 
 
 
 
Gulf Power30
195
25
30

 280
 280
 45
 
 
 40
Mississippi Power100




 100
 100
 
 
 
 100
Southern Power Company(b)




750
 750
 728
 
 
 
 
Southern Company Gas(c)




1,900
 1,900
 1,861
 
 
 
 
Other
30



 30
 30
 20
 
 20
 10
Southern Company Consolidated$130
$260
$25
$530
$7,200
 $8,145
 $8,066
 $65
 $
 $20
 $185
(a)Represents the Southern Company parent entity.
(b)
Does not include Southern Power's $120 million continuing letter of credit facility for standby letters of credit expiring in 2019, of which $111 million has been used for letters of credit and $9 million remains unused at September 30, 2017.
(c)
Southern Company Gas, as the parent entity, guarantees the obligations of Southern Company Gas Capital, which is the borrower of $1.2 billion of these arrangements. Southern Company Gas' committed credit arrangements also include $700 million for which Nicor Gas is the borrower and which is restricted for working capital needs of Nicor Gas.
As reflected in the table above, in May 2017, Southern Company, Alabama Power, Georgia Power, and Southern Power Company each amended certain of their multi-year credit arrangements, which, among other things, extended the maturity dates from 2020 to 2022. Southern Company and Southern Power Company increased their borrowing ability under these arrangements to $2.0 billion from $1.25 billion and to $750 million from $600 million, respectively. Southern Company also terminated its $1.0 billion facility maturing in 2018. Also in May 2017, Southern Company Gas Capital and Nicor Gas terminated their existing credit arrangements for $1.3 billion and $700 million, respectively, which were to mature in 2017 and 2018, and entered into a new multi-year credit arrangement currently allocated for $1.2 billion and $700 million, respectively, with a maturity date of 2022. Pursuant to the new multi-year credit arrangement, the allocations may be adjusted. In September 2017, Alabama Power amended its $500 million multi-year credit arrangement, which, among other things, extended the maturity date from 2018 to 2020.
Subject to applicable market conditions, Southern Company and its subsidiaries expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, Southern Company and its subsidiaries may extend the maturity dates and/or increase or decrease the lending commitments thereunder.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Financing Activities
The following table outlines the long-term debt financing activities for Southern Company and its subsidiaries for the first nine months of 2017:
CompanySenior Note Issuances 
Senior
Note Maturities and Redemptions
 
Revenue
Bond
Maturities, Redemptions, and
Repurchases
 
Other
Long-Term
Debt
Issuances
 
Other
Long-Term Debt Redemptions
and
Maturities(a)
 (in millions)
Southern Company(b)
$300
 $400
 $
 $500
 $400
Alabama Power550
 200
 36
 
 
Georgia Power1,350
 450
 65
 370
 13
Gulf Power300
 85
 
 6
 
Mississippi Power
 
 
 40
 893
Southern Power
 
 
 43
 4
Southern Company Gas(c)
450
 
 
 200
 22
Other
 
 
 
 12
Elimination(d)

 
 
 (40) (599)
Southern Company Consolidated$2,950
 $1,135
 $101
 $1,119
 $745
(a)Includes reductions in capital lease obligations resulting from cash payments under capital leases.
(b)Represents the Southern Company parent entity.
(c)
The senior notes were issued by Southern Company Gas Capital and guaranteed by the Southern Company Gas parent entity. Other long-term debt issued represents first mortgage bonds issued by Nicor Gas.
(d)Includes intercompany loans from Southern Company to Mississippi Power and reductions in affiliate capital lease obligations at Georgia Power. These transactions are eliminated in Southern Company's Consolidated Financial Statements.
Southern Company
In June 2017, Southern Company issued $500 million aggregate principal amount of Series 2017A 5.325% Junior Subordinated Notes due June 21, 2057 and $300 million aggregate principal amount of Series 2017A Floating Rate Senior Notes due September 30, 2020, which bear interest at a floating rate based on three-month LIBOR. The proceeds were used to repay short-term indebtedness and for other general corporate purposes.
Also in June 2017, Southern Company entered into two $100 million aggregate principal amount floating rate bank term loan agreements, which mature on June 21, 2018 and June 29, 2018 and bear interest based on one-month LIBOR. The proceeds were used for working capital and other general corporate purposes.
In August 2017, Southern Company borrowed $250 million pursuant to an uncommitted bank credit arrangement, which bears interest at a rate agreed upon by Southern Company and the bank from time to time and is payable on no less than 30 days' demand by the bank. The proceeds were used for working capital and other general corporate purposes.
Alabama Power
In March 2017, Alabama Power issued $550 million aggregate principal amount of Series 2017A 2.45% Senior Notes due March 30, 2022. The proceeds were used to repay Alabama Power's short-term indebtedness and for general corporate purposes, including Alabama Power's continuous construction program.
In September 2017, Alabama Power issued 10 million shares ($250 million aggregate stated capital) of 5.00% Class A Preferred Stock, Cumulative, Par Value $1 Per Share (Stated Capital $25 Per Share). The proceeds were used in

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

October 2017 to redeem all 2 million shares ($50 million aggregate stated capital) of Alabama Power's 6.50% Series Preference Stock, 6 million shares ($150 million aggregate stated capital) of Alabama Power's 6.45% Series Preference Stock, and 1.52 million shares ($38 million aggregate stated capital) of Alabama Power's 5.83% Class A Preferred Stock and for other general corporate purposes, including Alabama Power's continuous construction program.
Georgia Power
In March 2017, Georgia Power issued $450 million aggregate principal amount of Series 2017A 2.00% Senior Notes due March 30, 2020 and $400 million aggregate principal amount of Series 2017B 3.25% Senior Notes due March 30, 2027. The proceeds were used to repay a portion of Georgia Power's short-term indebtedness and for general corporate purposes, including Georgia Power's continuous construction program.
In April 2017, Georgia Power purchased and held $27 million aggregate principal amount of Development Authority of Burke County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Vogtle Project), Fifth Series 1995. Subsequent to September 30, 2017, Georgia Power remarketed these bonds to the public.
In June 2017, Georgia Power entered into three floating rate bank loans in aggregate principal amounts of $50 million, $150 million, and $100 million, with maturity dates of December 1, 2017, May 31, 2018, and June 28, 2018, respectively, which bear interest based on one-month LIBOR. Also in June 2017, Georgia Power borrowed $500 million pursuant to an uncommitted bank credit arrangement, which bears interest at a rate agreed upon by Georgia Power and the bank from time to time and is payable on no less than 30 days' demand by the bank. The proceeds from these bank loans were used to repay a portion of Georgia Power's existing indebtedness and for working capital and other general corporate purposes, including Georgia Power's continuous construction program.
In August 2017, Georgia Power repaid $250 million of the $500 million aggregate principal amount outstanding pursuant to its uncommitted bank credit arrangement. Also in August 2017, Georgia Power amended its $100 million floating rate bank loan to extend the maturity date from June 28, 2018 to October 26, 2018.
Also in August 2017, Georgia Power issued $500 million aggregate principal amount of Series 2017C 2.00% Senior Notes due September 8, 2020. The proceeds were used to repay Georgia Power's $50 million floating rate bank loan due December 1, 2017 and outstanding commercial paper borrowings and for general corporate purposes.
Also in August 2017, Georgia Power purchased and held $38 million aggregate principal amount of Development Authority of Bartow County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Bowen Project), First Series 1997. Subsequent to September 30, 2017, Georgia Power remarketed these bonds to the public.
In September 2017, Georgia Power issued $270 million aggregate principal amount of Series 2017A 5.00% Junior Subordinated Notes due October 1, 2077. The proceeds were used in October 2017 to redeem all 1.8 million shares ($45 million aggregate liquidation amount) of Georgia Power's 6.125% Series Class A Preferred Stock and 2.25 million shares ($225 million aggregate liquidation amount) of Georgia Power's 6.50% Series 2007A Preference Stock.
Gulf Power
In March 2017, Gulf Power extended the maturity of a $100 million short-term floating rate bank loan bearing interest based on one-month LIBOR from April 2017 to October 2017 and subsequently repaid the loan in May 2017.
In May 2017, Gulf Power issued $300 million aggregate principal amount of Series 2017A 3.30% Senior Notes due May 30, 2027. The proceeds, together with other funds, were used to repay at maturity $85 million aggregate principal amount of Series 2007A 5.90% Senior Notes due June 15, 2017; to repay outstanding commercial paper borrowings; to repay a $100 million short-term floating rate bank loan, as discussed above; and to redeem, in June 2017, 550,000 shares ($55 million aggregate liquidation amount) of Gulf Power's 6.00% Series Preference Stock, 450,000 shares ($45 million aggregate liquidation amount) of Gulf Power's Series 2007A 6.45% Preference Stock,

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

and 500,000 shares ($50 million aggregate liquidation amount) of Gulf Power's Series 2013A 5.60% Preference Stock.
Mississippi Power
In March 2017, Mississippi Power issued a $9 million short-term bank note bearing interest at 5% per annum, which was repaid in April 2017.
In February 2017, Mississippi Power amended $551 million in promissory notes to Southern Company extending the maturity dates of the notes from December 1, 2017 to July 31, 2018. In the second quarter 2017, Mississippi Power borrowed an additional $40 million under a promissory note issued to Southern Company.
In June 2017, Southern Company made equity contributions totaling $1.0 billion to Mississippi Power. Mississippi Power used a portion of the proceeds to (i) prepay $300 million of the outstanding principal amount under its $1.2 billion unsecured term loan, which matures on March 30, 2018; (ii) repay all of the $591 million outstanding principal amount of promissory notes to Southern Company; and (iii) repay a $10 million short-term bank loan.
In August 2017, Mississippi Power repaid a $12.5 million short-term bank note.
In September 2017, Mississippi Power issued a floating rate promissory note to Southern Company in an aggregate principal amount of up to $150 million bearing interest based on one-month LIBOR. Mississippi Power borrowed $109 million under this promissory note primarily to satisfy its federal income tax obligations for the quarter ending September 30, 2017 and subsequently repaid the promissory note upon receipt of its income tax refund from the U.S. federal government related to the settlement concerning deductible R&E expenditures. See Note (G) under "Section 174 Research and Experimental Deduction" for additional information.
Southern Power
In September 2017, Southern Power amended its $60 million aggregate principal amount floating rate bank loan to, among other things, increase the aggregate principal amount to $100 million and extend the maturity date from September 2017 to October 2018. The additional $40 million of proceeds were used to repay existing indebtedness and for other general corporate purposes.
Southern Company Gas
In May 2017, Southern Company Gas Capital issued $450 million aggregate principal amount of Series 2017A 4.40% Senior Notes due May 30, 2047. The proceeds were used to repay Southern Company Gas' short-term indebtedness and for general corporate purposes.
In July 2017, Nicor Gas agreed to issue $400 million aggregate principal amount of first mortgage bonds in a private placement. On August 10, 2017, Nicor Gas issued $100 million aggregate principal amount of First Mortgage Bonds 3.03% Series due August 10, 2027 and $100 million aggregate principal amount of First Mortgage Bonds 3.62% Series due August 10, 2037. The proceeds were used to repay short-term indebtedness incurred under the Nicor Gas commercial paper program and for other working capital needs. The remaining $200 million is expected to be issued in November 2017.
(F)RETIREMENT BENEFITS
Southern Company has a defined benefit, trusteed, pension plan covering substantially all employees, with the exception of employees at Southern Company Gas, as discussed below, and PowerSecure. The Southern Company qualified pension plan is funded in accordance with requirements of the Employee Retirement Income Security Act of 1974, as amended (ERISA). No mandatory contributions to the Southern Company qualified pension plan are anticipated for the year ending December 31, 2017. Southern Company also provides certain defined benefit pension plans for a selected group of management and highly compensated employees. Benefits under these non-qualified pension plans are funded on a cash basis. In addition, Southern Company provides certain medical care and life insurance benefits for retired employees through other postretirement benefit plans. The traditional electric

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

operating companies fund related other postretirement trusts to the extent required by their respective regulatory commissions.
In addition, Southern Company Gas has a qualified defined benefit, trusteed, pension plan covering certain eligible employees, which was closed in 2012 to new employees. This qualified pension plan is funded in accordance with requirements of ERISA. No mandatory contributions to the Southern Company Gas qualified pension plan are anticipated for the year ending December 31, 2017. Southern Company Gas also provides certain non-qualified defined benefit and defined contribution pension plans for a selected group of management and highly compensated employees. Benefits under these non-qualified pension plans are funded on a cash basis. In addition, Southern Company Gas provides certain medical care and life insurance benefits for eligible retired employees through a postretirement benefit plan. Southern Company Gas also has a separate unfunded supplemental retirement health care plan that provides medical care and life insurance benefits to employees of discontinued businesses.
See Note 2 to the financial statements of Southern Company, Alabama Power, Georgia Power, Gulf Power, Mississippi Power, and Southern Company Gas in Item 8 of the Form 10-K for additional information.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Components of the net periodic benefit costs for the three and nine months ended September 30, 2017 and 2016 are presented in the following tables.
Pension Plans
Southern
Company
 
Alabama
Power
 
Georgia
Power
 
Gulf
Power
 
Mississippi
Power
 (in millions)
Three Months Ended September 30, 2017         
Service cost$73
 $15
 $19
 $3
 $4
Interest cost114
 25
 34
 5
 5
Expected return on plan assets(224) (49) (71) (10) (9)
Amortization:         
Prior service costs3
 1
 
 
 
Net (gain)/loss41
 10
 15
 2
 1
Net periodic pension cost (income)$7
 $2
 $(3) $
 $1
Nine Months Ended September 30, 2017         
Service cost$220
 $47
 $56
 $10
 $11
Interest cost341
 73
 103
 15
 15
Expected return on plan assets(673) (147) (212) (29) (29)
Amortization:         
Prior service costs9
 2
 2
 
 1
Net (gain)/loss122
 31
 43
 5
 5
Net periodic pension cost (income)$19
 $6
 $(8) $1
 $3
Three Months Ended September 30, 2016         
Service cost$68
 $14
 $17
 $3
 $3
Interest cost110
 23
 34
 5
 4
Expected return on plan assets(203) (46) (64) (9) (9)
Amortization:         
Prior service costs3
 1
 1
 
 1
Net (gain)/loss45
 10
 14
 2
 2
Net periodic pension cost$23
 $2
 $2
 $1
 $1
Nine Months Ended September 30, 2016         
Service cost$192
 $43
 $52
 $9
 $9
Interest cost311
 71
 102
 14
 14
Expected return on plan assets(577) (138) (193) (26) (26)
Amortization:         
Prior service costs10
 2
 4
 1
 1
Net (gain)/loss120
 30
 41
 5
 5
Net periodic pension cost$56
 $8
 $6
 $3
 $3

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Pension Plans
Southern
Company
Gas
 (in millions)
Successor – Three Months Ended September 30, 2017 
Service cost$6
Interest cost10
Expected return on plan assets(18)
Amortization of net (gain)/loss5
Net periodic pension cost$3
Successor – Nine Months Ended September 30, 2017 
Service cost$17
Interest cost30
Expected return on plan assets(53)
Amortization: 
Prior service costs(1)
Net (gain)/loss15
Net periodic pension cost$8
Successor – July 1, 2016 through September 30, 2016 
Service cost$7
Interest cost10
Expected return on plan assets(17)
Amortization of regulatory asset6
Net periodic pension cost$6
  
  
Predecessor – January 1, 2016 through June 30, 2016 
Service cost$13
Interest cost21
Expected return on plan assets(33)
Amortization: 
Prior service costs(1)
Net (gain)/loss13
Net periodic pension cost$13

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Postretirement Benefits
Southern
Company
 
Alabama
Power
 
Georgia
Power
 
Gulf
Power
 
Mississippi
Power
 (in millions)
Three Months Ended September 30, 2017         
Service cost$6
 $1
 $2
 $
 $
Interest cost19
 4
 6
 1
 1
Expected return on plan assets(16) (5) (6) 
 
Amortization:         
Prior service costs2
 1
 
 
 
Net (gain)/loss3
 
 3
 
 
Net periodic postretirement benefit cost$14
 $1
 $5
 $1
 $1
Nine Months Ended September 30, 2017         
Service cost$18
 $4
 $5
 $1
 $1
Interest cost59
 13
 21
 2
 3
Expected return on plan assets(49) (19) (18) (1) (1)
Amortization:         
Prior service costs5
 3
 1
 
 
Net (gain)/loss10
 1
 6
 
 
Net periodic postretirement benefit cost$43
 $2
 $15
 $2
 $3
Three Months Ended September 30, 2016         
Service cost$6
 $1
 $2
 $
 $
Interest cost20
 5
 7
 1
 
Expected return on plan assets(16) (6) (6) 
 
Amortization:         
Prior service costs1
 1
 
 
 
Net (gain)/loss5
 
 3
 
 1
Net periodic postretirement benefit cost$16
 $1
 $6
 $1
 $1
Nine Months Ended September 30, 2016         
Service cost$17
 $4
 $5
 $1
 $1
Interest cost55
 14
 22
 2
 2
Expected return on plan assets(44) (19) (17) (1) (1)
Amortization:         
Prior service costs4
 3
 1
 
 
Net (gain)/loss12
 1
 7
 
 1
Net periodic postretirement benefit cost$44
 $3
 $18
 $2
 $3

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Postretirement Benefits
Southern
Company
Gas
 (in millions)
Successor – Three Months Ended September 30, 2017 
Service cost$1
Interest cost3
Expected return on plan assets(2)
Amortization: 
Prior service costs(1)
Net (gain)/loss1
Net periodic postretirement benefit cost$2
Successor – Nine Months Ended September 30, 2017 
Service cost$2
Interest cost8
Expected return on plan assets(5)
Amortization: 
Prior service costs(2)
Net (gain)/loss3
Net periodic postretirement benefit cost$6
Successor – July 1, 2016 through September 30, 2016 
Service cost$1
Interest cost2
Expected return on plan assets(2)
Amortization of regulatory asset1
Net periodic postretirement benefit cost$2
  
  
Predecessor – January 1, 2016 through June 30, 2016 
Service cost$1
Interest cost5
Expected return on plan assets(3)
Amortization: 
Prior service costs(1)
Net (gain)/loss2
Net periodic postretirement benefit cost$4

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

(G)INCOME TAXES
See Note 5 to the financial statements of each registrant in Item 8 of the Form 10-K for additional tax information.
Current and Deferred Income Taxes
Tax Credit Carryforwards
Southern Company had federal ITC and PTC carryforwards (primarily related to Southern Power) totaling $1.9 billion as of September 30, 2017 compared to $1.8 billion as of December 31, 2016.
The federal ITC carryforwards begin expiring in 2032 but are expected to be fully utilized by 2022. The PTC carryforwards begin expiring in 2036 but are expected to be utilized by 2022. The expected utilization of tax credit carryforwards could be further delayed by numerous factors. These factors include the acquisition of additional renewable projects, increased generation at existing wind facilities, carrying back the federal net operating loss, and potential tax reform legislation, as well as additional deductions in the event of an asset abandonment. The ultimate outcome of these matters cannot be determined at this time.
Valuation Allowances
At September 30, 2017, valuation allowances were as follows:
 Mississippi Power 
Southern Company
Gas
 Southern Company
 (in millions)
Federal$
 $18
 $18
State (net of federal benefit)46
 1
 64
Balance at September 30, 2017$46
 $19
 $82
Southern Company had valuation allowances, net of the federal benefit, of $82 million at September 30, 2017 compared to $21 million at December 31, 2016. The increase was primarily due to Mississippi Power's projected inability to utilize the State of Mississippi net operating loss.
Effective Tax Rate
Southern Company
Southern Company's effective tax rate is typically lower than the statutory rate due to employee stock plans' dividend deduction, non-taxable AFUDC equity, and federal income tax benefits from ITCs and PTCs.
Southern Company's effective tax rate was 42.6% for the nine months ended September 30, 2017 compared to 28.3% for the corresponding period in 2016. The effective tax rate increase was primarily due to the estimated probable losses on the Kemper IGCC, net of the non-deductible AFUDC equity portion. Other factors include a decrease in tax benefits from solar ITCs and an increase in state valuation allowances, partially offset by an increase in tax benefits from wind PTCs.
Southern Company recognizes PTCs when wind energy is generated and sold (using the prescribed KWH rate in applicable federal and state statutes), which may differ significantly from amounts computed on a quarterly basis using an overall estimated annual effective income tax rate. Southern Company uses this method of recognition since the amount of PTCs can be significantly impacted by wind generation. This method can significantly affect the effective income tax rate for the period depending on the amount of pretax income.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Mississippi Power
Mississippi Power's effective tax (benefit) rate was (30.3)% for the nine months ended September 30, 2017 compared to (282.8)% for the corresponding period in 2016. The effective tax rate increase was primarily due to the estimated probable losses on the Kemper IGCC, net of the non-deductible AFUDC equity portion and the related state valuation allowances.
Southern Power
Southern Power's effective tax (benefit) rate was (66.5)% for the nine months ended September 30, 2017 compared to (88.9)% for the corresponding period in 2016. The effective tax rate increase was primarily due to a decrease in tax benefits from solar ITCs, partially offset by additional wind PTCs and state apportionment rate changes.
Southern Power recognizes PTCs when wind energy is generated and sold (using the prescribed KWH rate in applicable federal and state statutes), which may differ significantly from amounts computed on a quarterly basis using an overall estimated annual effective income tax rate. Southern Power uses this method of recognition since the amount of PTCs can be significantly impacted by wind generation. This method can significantly affect the effective income tax rate for the period depending on the amount of pretax income.
During the third quarter 2017, Southern Power began a legal entity reorganization of various direct and indirect subsidiaries that own and operate solar facilities, including certain subsidiaries owned in partnership with various third parties. Southern Power's ownership interests in the various solar entities and facilities will not be affected by the reorganization. The reorganization is expected to result in estimated tax benefits totaling approximately $40 million that will be recorded in the fourth quarter 2017 related to certain changes in state apportionment rates and net operating loss carryforward utilization. The ultimate outcome of this matter cannot be determined at this time.
Southern Company Gas
Southern Company Gas' effective tax rate was 43.4% for the successor nine months ended September 30, 2017 compared to 60.3% for the successor period of July 1, 2016 through September 30, 2016 and 37.6% for the predecessor period of January 1, 2016 through June 30, 2016. The effective tax rate for the successor year-to-date 2017 was impacted by State of Illinois tax legislation enacted during July 2017, the allocation of new tax apportionment factors in several states for the inclusion of Southern Company Gas into the consolidated Southern Company state tax filings, and higher pre-tax earnings. The effective tax rates for the periods in 2016 were impacted by the non-deductibility of certain Merger-related expenses. The effective tax rate for the successor period of July 1, 2016 through September 30, 2016 was also impacted by nondeductible expenses associated with certain compensation costs.
Unrecognized Tax Benefits
See Note 5 to the financial statements of each registrant under "Unrecognized Tax Benefits" in Item 8 of the Form 10-K for additional information.
Changes during the nine months ended September 30, 2017 for unrecognized tax benefits were as follows:
 Mississippi Power Southern Power Southern Company
 (in millions)
Unrecognized tax benefits as of December 31, 2016$465
 $17
 $484
Tax positions from current periods2
 
 9
Tax positions from prior periods(175) (17) (186)
Reductions due to settlements(290) 
 (290)
Balance as of September 30, 2017$2
 $
 $17

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

The tax positions from current and prior periods primarily relate to state tax benefits, deductions for R&E expenditures, and charitable contribution carryforwards that were impacted as a result of the settlement of R&E expenditures associated with the Kemper IGCC, as well as federal income tax benefits from deferred ITCs. See "Section 174 Research and Experimental Deduction" herein for additional information. These amounts are presented on a gross basis without considering the related federal or state income tax impact.
The impact on the effective tax rate, if recognized, is as follows:
 As of September 30, 2017 As of December 31, 2016
 Mississippi Power Southern Company Southern Company
 (in millions)
Tax positions impacting the effective tax rate$2
 $17
 $20
Tax positions not impacting the effective tax rate
 
 464
Balance of unrecognized tax benefits$2
 $17
 $484
The tax positions impacting the effective tax rate primarily relate to state tax benefits and charitable contribution carryforwards that were impacted as a result of the settlement of R&E expenditures associated with the Kemper IGCC. See "Section 174 Research and Experimental Deduction" herein for additional information.
Accrued interest for all tax positions was immaterial for all periods presented.
All of the registrants classify interest on tax uncertainties as interest expense. None of the registrants accrued any penalties on uncertain tax positions.
It is reasonably possible that the amount of the unrecognized tax benefits could change within 12 months. The settlement of federal and state audits could impact the balances significantly. At this time, an estimate of the range of reasonably possible outcomes cannot be determined.
The IRS has finalized its audits of Southern Company's consolidated federal income tax returns through 2016. Southern Company is a participant in the Compliance Assurance Process of the IRS. However, the pre-Merger Southern Company Gas 2014, 2015, and June 30, 2016 federal tax returns are currently under audit. The audits for Southern Company's state income tax returns have either been concluded, or the statute of limitations has expired, for years prior to 2011.
Section 174 Research and Experimental Deduction
Southern Company has reflected deductions for R&E expenditures related to the Kemper IGCC in its federal income tax calculations since 2013 and filed amended federal income tax returns for 2008 through 2013 to also include such deductions. In December 2016, Southern Company and the IRS reached a proposed settlement, which was approved on September 8, 2017 by the U.S. Congress Joint Committee on Taxation (JCT), resolving a methodology for these deductions. As a result of the JCT approval, Southern Company recognized $176 million of previously unrecognized tax benefits and reversed $36 million of associated accrued interest. If the suspension of the Kemper IGCC start-up activities results in an abandonment, any amount not allowed under IRC Section 174 would be claimed as a deduction under IRC Section 165 in the year an abandonment is determined. The ultimate outcome of this matter cannot be determined at this time.
(H)DERIVATIVES
Southern Company, the traditional electric operating companies, Southern Power, and Southern Company GasRegistrants are exposed to market risks, including commodity price risk, interest rate risk, weather risk, and occasionally foreign currency exchange rate risk. To manage the volatility attributable to these exposures, each company nets its exposures, where possible, to take advantage of natural offsets and enters into various derivative transactions for the

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

remaining exposures pursuant to each company's policies in areas such as counterparty exposure and risk management practices. Southern Company Gas' wholesale gas operations use various contracts in its commercial activities that generally meet the definition of derivatives. For the traditional electric operating companies, Southern Power, and Southern Company Gas' other businesses, each company's policy is that derivatives are to be used primarily for hedging purposes and mandates strict adherence to all applicable risk management policies. Derivative positions are monitored using techniques including, but not limited to, market valuation, value at risk, stress testing, and sensitivity analysis. Derivative instruments are recognized at fair value in the balance sheets as either assets or liabilities and are presented on a net basis. See Note (C)(I) for additional fair value information. In the statements of cash flows, theany cash impacts of settled energy-related and interest rate derivatives are recorded as operating activities. TheAny cash impacts of settled foreign currency derivatives are classified as operating or financing activities to correspond with the classification of the hedged interest or principal, respectively. See Note 1 to the financial statements under "Financial Instruments" in Item 8 of the Form 10-K for additional information.
Energy-Related Derivatives
Southern Company, the traditional electric operating companies, Southern Power, and Southern Company GasThe Subsidiary Registrants enter into energy-related derivatives to hedge exposures to electricity, natural gas, and other fuel price changes. However, due to cost-based rate regulations and other various cost recovery mechanisms, the traditional electric operating companies and the natural gas distribution utilities have limited exposure to market volatility in energy-related commodity prices. Each of the traditional electric operating companies and certain of the natural gas distribution utilities of Southern Company Gas manage fuel-hedging programs, implemented per the guidelines of their respective state PSCs or other applicable state regulatory agencies, through the use of financial derivative contracts, which isare expected to continue to mitigate price volatility. The Florida PSC extended the moratorium on Gulf Power's fuel-hedging program until January 1, 2021 in connection with the 2017 Rate Case Settlement Agreement. The moratorium does not have an impact on the recovery of existing hedges entered into under the previously-approved hedging program. The traditional electric operating companies (with respect to wholesale generating capacity) and Southern Power have limited exposure to market volatility in energy-related commodity prices because their long-term sales contracts shift substantially all fuel cost responsibility to the purchaser. However, the traditional electric operating companies and Southern Power may be exposed to market volatility in energy-related commodity prices to the extent any uncontracted capacity is used to sell electricity. Southern Company Gas retains exposure to price changes that can, in a volatile energy market, be material and can adversely affect its results of operations.
Southern Company Gas also enters into weather derivative contracts as economic hedges of operating margins in the event of warmer-than-normal weather. Exchange-traded options are carried at fair value, with changes reflected in operating revenues. Non exchange-tradedNon-exchange-traded options are accounted for using the intrinsic value method. Changes in the intrinsic value for non-exchange-traded contracts are reflected in the statements of income.operating revenues.
Energy-related derivative contracts are accounted for under one of three methods:
Regulatory Hedges Energy-related derivative contracts which are designated as regulatory hedges relate primarily to the traditional electric operating companies' and the natural gas distribution utilities' fuel-hedging programs, where gains and losses are initially recorded as regulatory liabilities and assets, respectively, and then are included in fuel expense as the underlying fuel is used in operations and ultimately recovered through the respective fuelan approved cost recovery clauses.
mechanism.
Cash Flow Hedges Gains and losses on energy-related derivatives designated as cash flow hedges (which are mainly used to hedge anticipated purchases and sales) are initially deferred in accumulated OCI before being recognized in the statements of income in the same period and in the same income statement line item as the earnings effect of the hedged transactions are reflected in earnings.
transactions.
Not Designated Gains and losses on energy-related derivative contracts that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Some energy-related derivative contracts require physical delivery as opposed to financial settlement, and this type of derivative is both common and prevalent within the electric and natural gas industries. When an energy-related

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

derivative contract is settled physically, any cumulative unrealized gain or loss is reversed and the contract price is recognized in the respective line item representing the actual price of the underlying goods being delivered.
At September 30, 2017,March 31, 2023, the net volume of energy-related derivative contracts for natural gas positions, for the Southern Company system, together with the longest hedge date over which the respective entity is hedging its exposure to the variability in future cash flows for forecasted transactions and the longest non-hedge date for derivatives not designated as hedges, were as follows:
Net
Purchased
mmBtu
Longest
Hedge
Date
Longest
Non-Hedge
Date
(in millions)
Southern Company(*)
43720302028
Alabama Power11120262023
Georgia Power12220262023
Mississippi Power8620272023
Southern Power1120302023
Southern Company Gas(*)
10720282028
 
Net
Purchased
mmBtu
 
Longest
Hedge
Date
 
Longest
Non-Hedge
Date
 (in millions)    
Southern Company(*)
463 2021 2024
Alabama Power66 2020 
Georgia Power159 2021 
Gulf Power28 2020 
Mississippi Power44 2021 
Southern Power13 2018 
Southern Company Gas(*)
153 2020 2024
(*)Southern Company Gas' derivative instruments include both long and short natural gas positions. A long position is a contract to purchase natural gas and a short position is a contract to sell natural gas. Southern Company Gas' volume represents the net of long natural gas positions of 113.6 million mmBtu and short natural gas positions of 6.6 million mmBtu at March 31, 2023, which is also included in Southern Company's total volume.
(*)Southern Company's and Southern Company Gas' derivative instruments include both long and short natural gas positions. A long position is a contract to purchase natural gas and a short position is a contract to sell natural gas. Southern Company Gas' volume represents the net of long natural gas positions of 3.3 billion mmBtu and short natural gas positions of 3.1 billion mmBtu as of September 30, 2017, which is also included in Southern Company's total volume.
In addition to the volumes discussed above, the traditional electric operating companies and Southern Power enter into physical natural gas supply contracts that provide the option to sell back excess natural gas due to operational constraints. The maximum expected volume of natural gas subject to such a feature is 3422 million mmBtu for Southern Company, 11which includes 6 million mmbtummBtu for GeorgiaAlabama Power, and Southern Power, 58 million mmbtummBtu for AlabamaGeorgia Power, 3 million mmBtu for GulfMississippi Power, and 45 million mmBtu for MississippiSouthern Power.
For cash flow hedges of energy-related derivatives, the amountsestimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to earnings for the next 12-month period ending September 30, 2018March 31, 2024 are $5$(42) million for Southern Company, $(12) million for Southern Power, $(30) million for Southern Company Gas, and immaterial for allthe other registrants.Registrants.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Interest Rate Derivatives
Southern Company and certain subsidiaries may also enter into interest rate derivatives to hedge exposure to changes in interest rates. The derivatives employed as hedging instruments are structured to minimize ineffectiveness. Derivatives related to existing variable rate securities or forecasted transactions are accounted for as cash flow hedges where the effective portion of the derivatives' fair value gains or losses isare recorded in OCI and isare reclassified into earnings at the same time and presented on the same income statement line item as the earnings effect of the hedged transactions affect earnings, with any ineffectiveness recorded directly to earnings.transactions. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings providing an offset, with any difference representing ineffectiveness.on the same income statement line item. Fair value gains or losses on derivatives that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

At September 30, 2017,March 31, 2023, the following interest rate derivatives were outstanding:
Notional
Amount
Weighted
Average Interest
Rate Paid
Interest
Rate
Received
Hedge
Maturity
Date
Fair Value Gain (Loss) at March 31, 2023
 (in millions)   (in millions)
Cash Flow Hedges of Forecasted Debt
Georgia Power$750 3.63%N/AFebruary 2033$(1)
Southern Company parent500 3.47%N/AJune
2033
— 
Southern Company Gas250 3.40%N/AAugust
2033
Fair Value Hedges of Existing Debt
Southern Company parent400 1-month LIBOR + 0.68%1.75%March 2028(45)
Southern Company parent1,000 1-month LIBOR + 2.36%3.70%April
2030
(142)
Southern Company Gas500 1-month LIBOR + 0.38%1.75%January 2031(71)
Southern Company$3,400 $(258)
 
Notional
Amount
 
Interest
Rate
Received
Weighted
Average
Interest
Rate Paid
Hedge
Maturity
Date
 Fair Value Gain (Loss) at September 30, 2017
 (in millions)     (in millions)
Cash Flow Hedges of Existing Debt      
Mississippi Power$900
 1-month
LIBOR 
0.79%March 2018 $2
Fair Value Hedges of Existing Debt      
Southern Company(*)
300
 2.75%3-month
LIBOR + 0.92%
June 2020 
Southern Company(*)
1,500
 2.35%1-month
LIBOR + 0.87%
July 2021 (19)
Georgia Power250
 5.40%3-month
LIBOR + 4.02%
June 2018 
Georgia Power500
 1.95%3-month
LIBOR + 0.76%
December 2018 (2)
Georgia Power200
 4.25%3-month
LIBOR + 2.46%
December 2019 
Southern Company Consolidated$3,650
     $(19)
(*)RepresentsFor cash flow hedges of interest rate derivatives, the Southern Company parent entity.
The estimated pre-tax gains (losses) related to interest rate derivatives expected to be reclassified from accumulated OCI to interest expense for the next 12-month period ending September 30, 2018March 31, 2024 are $(19)$(15) million for Southern Company and immaterial for allthe other registrants. Southern Company and certain subsidiaries have deferredRegistrants. Deferred gains and losses related to interest rate derivatives are expected to be amortized into earnings through 2046.2052 for Southern Company, Alabama Power, and Georgia Power, 2028 for Mississippi Power, and 2046 for Southern Company Gas.
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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
Foreign Currency Derivatives
Southern Company and certain subsidiaries, including Southern Power, may also enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars. Derivatives related to forecasted transactions are accounted for as cash flow hedges where the effective portion of the derivatives' fair value gains or losses isare recorded in OCI and isare reclassified into earnings at the same time thatand on the same income statement line as the earnings effect of the hedged transactions, affect earnings, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Any ineffectiveness isDerivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings. The derivatives employedearnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Southern Company has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as hedging instruments are structured to minimize ineffectiveness.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

a component of OCI.
At September 30, 2017,March 31, 2023, the following foreign currency derivatives were outstanding:
Pay NotionalPay
Rate
Receive NotionalReceive
Rate
Hedge
Maturity Date
Fair Value Gain (Loss) at March 31, 2023
(in millions)(in millions) (in millions)
Cash Flow Hedges of Existing Debt
Southern Power$564 3.78%500 1.85%June 2026$(47)
Fair Value Hedges of Existing Debt
Southern Company parent1,476 3.39%1,250 1.88%September 2027(171)
Southern Company$2,040 1,750 $(218)

Pay NotionalPay RateReceive NotionalReceive RateHedge
Maturity Date
Fair Value Gain (Loss) at September 30, 2017

(in millions) (in millions)  (in millions)
Cash Flow Hedges of Existing Debt     
Southern Power$677
2.95%600
1.00%June 2022$42
Southern Power564
3.78%500
1.85%June 202638
Total$1,241
 1,100
  $80
The estimated pre-tax gains (losses) related toFor cash flow hedges of foreign currency derivatives, that willthe estimated pre-tax losses expected to be reclassified from accumulated OCI to earnings for the next 12-month period ending September 30, 2018March 31, 2024 are $(23)$11 million for Southern Company and Southern Power.
Derivative Financial Statement Presentation and Amounts
Southern Company, the traditional electric operating companies, Southern Power, and Southern Company GasThe Registrants enter into derivative contracts that may contain certain provisions that permit intra-contract netting of derivative receivables and payables for routine billing and offsets related to events of default and settlements. Southern Company and certain subsidiaries also utilize master netting agreements to mitigate exposure to counterparty credit risk. These agreements may contain provisions that permit netting across product lines and against cash collateral. The fair value amounts of derivative assets and liabilities on the balance sheetsheets are presented net to the extent that there are netting arrangements or similar agreements with the counterparties.

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

The fair value of energy-related derivatives, interest rate derivatives, and foreign currency derivatives was reflected in the balance sheets as follows:
At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Company
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Liabilities from risk management activities$41 $230 $123 $121 
Other deferred charges and assets/Other deferred credits and liabilities53 113 52 44 
Total derivatives designated as hedging instruments for regulatory purposes94 343 175 165 
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Assets from risk management activities/Liabilities from risk management activities 38 27 
Other deferred charges and assets/Other deferred credits and liabilities4 4 
Interest rate derivatives:
Assets from risk management activities/Liabilities from risk management activities2 71 12 62 
Other deferred charges and assets/Other deferred credits and liabilities 191 — 240 
Foreign currency derivatives:
Assets from risk management activities/Liabilities from risk management activities 35 — 34 
Other deferred charges and assets/Other deferred credits and liabilities 183 — 182 
Total derivatives designated as hedging instruments in cash flow and fair value hedges6 522 21 549 
Energy-related derivatives not designated as hedging instruments
Assets from risk management activities/Liabilities from risk management activities4 8 13 13 
Other deferred charges and assets/Other deferred credits and liabilities2 1 
Total derivatives not designated as hedging instruments6 9 15 14 
Gross amounts recognized106 874 211 728 
Gross amounts offset(a)
(57)(118)(70)(111)
Net amounts recognized in the Balance Sheets(b)
$49 $756 $141 $617 
78

 As of September 30, 2017As of December 31, 2016
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
 (in millions)(in millions)
Southern Company    
Derivatives designated as hedging instruments for regulatory purposes    
Energy-related derivatives:    
Other current assets/Other current liabilities$21
$25
$73
$27
Other deferred charges and assets/Other deferred credits and liabilities13
23
25
33
Total derivatives designated as hedging instruments for regulatory purposes$34
$48
$98
$60
Derivatives designated as hedging instruments in cash flow and fair value hedges    
Energy-related derivatives:    
Other current assets/Other current liabilities$8
$6
$23
$7
Interest rate derivatives:    
Other current assets/Other current liabilities5
1
12
1
Other deferred charges and assets/Other deferred credits and liabilities
23
1
28
Foreign currency derivatives:    
Other current assets/Other current liabilities
23

25
Other deferred charges and assets/Other deferred credits and liabilities103


33
Total derivatives designated as hedging instruments in cash flow and fair value hedges$116
$53
$36
$94
Derivatives not designated as hedging instruments    
Energy-related derivatives:    
Other current assets/Other current liabilities$271
$254
$489
$483
Other deferred charges and assets/Other deferred credits and liabilities115
103
66
81
Interest rate derivatives:    
Other current assets/Other current liabilities

1

Total derivatives not designated as hedging instruments$386
$357
$556
$564
Gross amounts recognized$536
$458
$690
$718
Gross amounts offset(*)
$(275)$(351)$(462)$(524)
Net amounts recognized in the Balance Sheets$261
$107
$228
$194
Table of ContentsIndex to Financial Statements


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Alabama Power(c)
Energy-related derivatives designated as hedging instruments for regulatory purposes
Other current assets/Other current liabilities$14 $54 $42 $21 
Other deferred charges and assets/Other deferred credits and liabilities18 42 20 18 
Total derivatives designated as hedging instruments for regulatory purposes32 96 62 39 
Gross amounts offset(28)(28)(24)(24)
Net amounts recognized in the Balance Sheets$4 $68 $38 $15 
Georgia Power
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Other current liabilities$10 $86 $36 $43 
Other deferred charges and assets/Other deferred credits and liabilities11 45 18 
Total derivatives designated as hedging instruments for regulatory purposes21 131 42 61 
Interest rate derivatives designated as hedging instruments in cash flow and fair value hedges
Assets from risk management activities/Other current liabilities 1 — — 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities1 1 — 
Gross amounts recognized22 133 42 62 
Gross amounts offset(19)(19)(21)(21)
Net amounts recognized in the Balance Sheets$3 $114 $21 $41 
Mississippi Power(c)
Energy-related derivatives designated as hedging instruments for regulatory purposes
Assets from risk management activities/Other current liabilities$11 $37 $33 $24 
Other deferred charges and assets/Other deferred credits and liabilities24 25 26 
Total derivatives designated as hedging instruments for regulatory purposes35 62 59 32 
Gross amounts offset(25)(25)(17)(17)
Net amounts recognized in the Balance Sheets$10 $37 $42 $15 
79

 As of September 30, 2017As of December 31, 2016
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
 (in millions)(in millions)
     
Alabama Power    
Derivatives designated as hedging instruments for regulatory purposes    
Energy-related derivatives:    
Other current assets/Other current liabilities$6
$4
$13
$5
Other deferred charges and assets/Other deferred credits and liabilities3
3
7
4
Total derivatives designated as hedging instruments for regulatory purposes$9
$7
$20
$9
Gross amounts recognized$9
$7
$20
$9
Gross amounts offset$(5)$(5)$(8)$(8)
Net amounts recognized in the Balance Sheets$4
$2
$12
$1
     
Georgia Power    
Derivatives designated as hedging instruments for regulatory purposes    
Energy-related derivatives:    
Other current assets/Other current liabilities$10
$3
$30
$1
Other deferred charges and assets/Other deferred credits and liabilities8
8
14
7
Total derivatives designated as hedging instruments for regulatory purposes$18
$11
$44
$8
Derivatives designated as hedging instruments in cash flow and fair value hedges    
Interest rate derivatives:    
Other current assets/Other current liabilities$1
$1
$2
$
Other deferred charges and assets/Other deferred credits and liabilities
2

3
Total derivatives designated as hedging instruments in cash flow and fair value hedges$1
$3
$2
$3
Gross amounts recognized$19
$14
$46
$11
Gross amounts offset$(10)$(10)$(8)$(8)
Net amounts recognized in the Balance Sheets$9
$4
$38
$3
     
Gulf Power    
Derivatives designated as hedging instruments for regulatory purposes    
Energy-related derivatives:    
Other current assets/Other current liabilities$
$13
$4
$12
Other deferred charges and assets/Other deferred credits and liabilities
9
1
17
Total derivatives designated as hedging instruments for regulatory purposes$
$22
$5
$29
Gross amounts recognized$
$22
$5
$29
Gross amounts offset$
$
$(4)$(4)
Net amounts recognized in the Balance Sheets$
$22
$1
$25
Table of ContentsIndex to Financial Statements


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Power
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Other current assets/Other current liabilities$ $12 $— $12 
Other deferred charges and assets/Other deferred credits and liabilities4  — 
Foreign currency derivatives:
Other current assets/Other current liabilities 11 — 11 
Other deferred charges and assets/Other deferred credits and liabilities 36 — 36 
Total derivatives designated as hedging instruments in cash flow and fair value hedges4 59 59 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities 2 — 
Other deferred charges and assets/Other deferred credits and liabilities1  — 
Total derivatives not designated as hedging instruments1 2 — 
Gross amounts recognized5 61 59 
Net amounts recognized in the Balance Sheets$5 $61 $$59 
80

 As of September 30, 2017As of December 31, 2016
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
 (in millions)(in millions)
     
Mississippi Power    
Derivatives designated as hedging instruments for regulatory purposes    
Energy-related derivatives:    
Other current assets/Other current liabilities$1
$4
$2
$6
Other deferred charges and assets/Other deferred credits and liabilities2
3
2
5
Total derivatives designated as hedging instruments for regulatory purposes$3
$7
$4
$11
Derivatives designated as hedging instruments in cash flow and fair value hedges    
Interest rate derivatives:    
Other current assets/Other current liabilities$2
$
$2
$
Other deferred charges and assets/Other deferred credits and liabilities

1

Total derivatives designated as hedging instruments in cash flow and fair value hedges$2
$
$3
$
Gross amounts recognized$5
$7
$7
$11
Gross amounts offset$(3)$(3)$(3)$(3)
Net amounts recognized in the Balance Sheets$2
$4
$4
$8
     
Southern Power    
Derivatives designated as hedging instruments in cash flow and fair value hedges    
Energy-related derivatives:    
Other current assets/Other current liabilities$8
$4
$18
$4
Foreign currency derivatives:    
Other current assets/Other current liabilities
23

25
Other deferred charges and assets/Other deferred credits and liabilities103


33
Total derivatives designated as hedging instruments in cash flow and fair value hedges$111
$27
$18
$62
Derivatives not designated as hedging instruments    
Energy-related derivatives:    
Other current assets/Other current liabilities$1
$
$3
$1
Interest rate derivatives:    
Other current assets/Other current liabilities

1

Total derivatives not designated as hedging instruments$1
$
$4
$1
Gross amounts recognized$112
$27
$22
$63
Gross amounts offset$(1)$(1)$(5)$(5)
Net amounts recognized in the Balance Sheets$111
$26
$17
$58
Table of ContentsIndex to Financial Statements


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

At March 31, 2023At December 31, 2022
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
(in millions)(in millions)
Southern Company Gas
Energy-related derivatives designated as hedging instruments for regulatory purposes
Other current assets/Other current liabilities$6 $53 $12 $33 
Other deferred charges and assets/Other deferred credits and liabilities 1 — — 
Total derivatives designated as hedging instruments for regulatory purposes6 54 12 33 
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Other current assets/Other current liabilities 26 15 
Other deferred charges and assets/Other deferred credits and liabilities 4 
Interest rate derivatives:
Other current assets/Other current liabilities1 19 — 14 
Other deferred charges and assets/Other deferred credits and liabilities 53 — 72 
Total derivatives designated as hedging instruments in cash flow and fair value hedges1 102 105 
Energy-related derivatives not designated as hedging instruments
Other current assets/Other current liabilities3 5 11 12 
Other deferred charges and assets/Other deferred credits and liabilities1 1 
Total derivatives not designated as hedging instruments4 6 12 13 
Gross amounts recognized11 162 28 151 
Gross amounts offset(a)
18 (43)— (41)
Net amounts recognized in the Balance Sheets(b)
$29 $119 $28 $110 
(a)Gross amounts offset includes cash collateral held on deposit in broker margin accounts of $60 million and $41 million at March 31, 2023 and December 31, 2022, respectively.
(b)Net amounts of derivative instruments outstanding exclude immaterial premium and intrinsic value associated with weather derivatives for both periods presented.
(c)Energy-related derivatives not designated as hedging instruments were immaterial for Alabama Power and Mississippi Power for both periods presented.
81

 As of September 30, 2017As of December 31, 2016
Derivative Category and Balance Sheet LocationAssetsLiabilitiesAssetsLiabilities
 (in millions)(in millions)
     
Southern Company Gas    
Derivatives designated as hedging instruments for regulatory purposes    
Energy-related derivatives:    
Assets from risk management activities/Liabilities from risk management activities-current$4
$1
$24
$3
Other deferred charges and assets/Other deferred credits and liabilities

1

Total derivatives designated as hedging instruments for regulatory purposes$4
$1
$25
$3
Derivatives designated as hedging instruments in cash flow and fair value hedges    
Energy-related derivatives:    
Assets from risk management activities/Liabilities from risk management activities-current$
$2
$4
$3
Derivatives not designated as hedging instruments    
Energy-related derivatives:    
Assets from risk management activities/Liabilities from risk management activities-current$270
$254
$486
$482
Other deferred charges and assets/Other deferred credits and liabilities115
103
66
81
Total derivatives not designated as hedging instruments$385
$357
$552
$563
Gross amounts of recognized$389
$360
$581
$569
Gross amounts offset(*)
$(251)$(327)$(435)$(497)
Net amounts recognized in the Balance Sheets$138
$33
$146
$72
Table of ContentsIndex to Financial Statements
(*)Gross amounts offset include cash collateral held on deposit in broker margin accounts of $76 million and $62 million as of September 30, 2017 and December 31, 2016, respectively.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

At September 30, 2017March 31, 2023 and December 31, 2016,2022, the pre-tax effects of unrealized derivative gains (losses) arising from energy-related derivative instruments designated as regulatory hedging instruments and deferred were as follows:
Regulatory Hedge Unrealized Gain (Loss) Recognized in the Balance Sheet
Derivative Category and Balance Sheet
Location
Southern
Company
Alabama
Power
Georgia
Power
Mississippi
Power
Southern Company Gas
 (in millions)
At March 31, 2023:
Energy-related derivatives:
Other regulatory assets, current$(198)$(44)$(78)$(29)$(47)
Other regulatory assets, deferred(67)(24)(35)(8)— 
Other regulatory liabilities, current19 11 
Other regulatory liabilities, deferred— 
Total energy-related derivative gains (losses)$(237)$(64)$(110)$(27)$(36)
At December 31, 2022:
Energy-related derivatives:
Other regulatory assets, current$(71)$(8)$(26)$(13)$(24)
Other regulatory assets, deferred(23)(7)(14)(2)— 
Other regulatory liabilities, current72 29 19 22 
Other regulatory liabilities, deferred31 20 — 
Total energy-related derivative gains (losses)$$23 $(19)$27 $(22)
82
Regulatory Hedge Unrealized Gain (Loss) Recognized in the Balance Sheet at September 30, 2017
Derivative Category and Balance Sheet
Location
Southern
Company(b)
Alabama
Power
Georgia
Power
Gulf
Power
Mississippi
Power
Southern Company Gas(c)
 (in millions) 
Energy-related derivatives:      
Other regulatory assets, current$(18)$(1)$
$(13)$(3)$(1)
Other regulatory assets, deferred(12)(1)(1)(9)(1)
Other regulatory liabilities, current(a)
14
3
7


4
Other regulatory liabilities, deferred(b)
2
1
1



Total energy-related derivative gains (losses)$(14)$2
$7
$(22)$(4)$3
(a)Georgia Power includes other regulatory liabilities, current in other current liabilities.
(b)Georgia Power includes other regulatory liabilities, deferred in other deferred credits and liabilities.
(c)Fair value gains and losses recorded in regulatory assets and liabilities include cash collateral held on deposit in broker margin accounts of $1 million at September 30, 2017.

Table of ContentsIndex to Financial Statements
Regulatory Hedge Unrealized Gain (Loss) Recognized in the Balance Sheet at December 31, 2016
Derivative Category and Balance Sheet
Location
Southern
Company(c)
Alabama
Power
Georgia
Power
Gulf
Power
Mississippi
Power
Southern Company Gas(c)
 (in millions) 
Energy-related derivatives:      
Other regulatory assets, current$(16)$(1)$
$(9)$(5)$(1)
Other regulatory assets, deferred(19)

(16)(3)
Other regulatory liabilities, current(a)
56
8
29
1
1
17
Other regulatory liabilities, deferred(b)
12
4
7


1
Total energy-related derivative gains (losses)$33
$11
$36
$(24)$(7)$17
(a)Georgia Power includes other regulatory liabilities, current in other current liabilities.
(b)Georgia Power includes other regulatory liabilities, deferred in other deferred credits and liabilities.
(c)Fair value gains and losses recorded in regulatory assets and liabilities include cash collateral held on deposit in broker margin accounts of $8 million at December 31, 2016.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

For the three months ended September 30, 2017March 31, 2023 and 2016,2022, the pre-tax effects of energy-related derivatives, interest rate derivatives,cash flow and foreign currencyfair value hedge accounting on accumulated OCI for the applicable Registrants were as follows:
Gain (Loss) Recognized in OCI on DerivativesFor the Three Months Ended March 31,
20232022
(in millions)
Southern Company
Cash flow hedges:
Energy-related derivatives$(45)$42 
Interest rate derivatives(13)
Foreign currency derivatives— (28)
Fair value hedges(*):
Foreign currency derivatives(28)
Total$(86)$27 
Georgia Power
Cash flow hedges:
Interest rate derivatives$(1)$12 
Southern Power
Cash flow hedges:
Energy-related derivatives$(11)$
Foreign currency derivatives— (28)
Total$(11)$(23)
Southern Company Gas
Cash flow hedges:
Energy-related derivatives$(34)$37 
Interest rate derivatives— 
Total$(33)$37 
(*)Represents amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded in OCI.
For the three months ended March 31, 2023, the pre-tax effects of energy-related derivatives designated as cash flow hedging instruments on accumulated OCI were as follows:immaterial for Alabama Power and Mississippi Power. There were no such instruments for Alabama Power and Mississippi Power at March 31, 2022.
83

Derivatives in Cash Flow
Hedging Relationships
Gain (Loss)
Recognized in OCI
on Derivative
(Effective Portion)
 
Gain (Loss) Reclassified from Accumulated OCI into
Income (Effective Portion)
 Statements of Income LocationAmount
 2017 2016  2017 2016
 (in millions)  (in millions)
Southern Company        
Energy-related derivatives$(6) $
 Depreciation and amortization$(6) $1
Interest rate derivatives(1) (6) Interest expense, net of amounts capitalized(5) (6)
Foreign currency derivatives46
 37
 Interest expense, net of amounts capitalized(5) (6)
     
Other income (expense), net(*)
43
 7
Total$39
 $31
  $27
 $(4)
Alabama Power        
Interest rate derivatives$
 $
 Interest expense, net of amounts capitalized$(2) $(2)
Georgia Power        
Interest rate derivatives$
 $
 Interest expense, net of amounts capitalized$(1) $(1)
Mississippi Power        
Interest rate derivatives$(1) $(1) Interest expense, net of amounts capitalized$
 $
Southern Power        
Energy-related derivatives$(6) $
 Depreciation and amortization$(6) $1
Foreign currency derivatives46
 37
 Interest expense, net of amounts capitalized(5) (6)
     
Other income (expense), net(*)
43
 7
Total$40
 $37
  $32
 $2
Southern Company Gas        
Interest rate derivatives$
 $(5) Interest expense, net of amounts capitalized$
 $
Table of ContentsIndex to Financial Statements
(*)The reclassification from accumulated OCI into other income (expense), net completely offsets currency gains and losses arising from changes in the U.S. currency exchange rates used to record the euro-denominated notes.


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

For the ninethree months ended September 30, 2017March 31, 2023 and 2016,2022, the pre-tax effects of energy-related derivatives, interest rate derivatives, and foreign currency derivatives designated as cash flow hedging instrumentsand fair value hedge accounting on income were as follows:
Location and Amount of Gain (Loss) Recognized in Income on Cash Flow and Fair Value Hedging RelationshipsFor the Three Months Ended March 31,
20232022
(in millions)
Southern Company
Total cost of natural gas$898 $1,095 
Gain (loss) on energy-related cash flow hedges(a)
(20)
Total depreciation and amortization1,111 892 
Gain (loss) on energy-related cash flow hedges(a)
(9)
Total interest expense, net of amounts capitalized(582)(462)
Gain (loss) on interest rate cash flow hedges(a)
(4)(7)
Gain (loss) on foreign currency cash flow hedges(a)
(3)(6)
Gain (loss) on interest rate fair value hedges(b)
43 (123)
Total other income (expense), net147 145 
Gain (loss) on foreign currency cash flow hedges(a)(c)
10 (25)
Gain (loss) on foreign currency fair value hedges(2)(24)
Amount excluded from effectiveness testing recognized in earnings28 (4)
Southern Power
Total depreciation and amortization$128 $120 
Gain (loss) on energy-related cash flow hedges(a)
(9)
Total interest expense, net of amounts capitalized(33)(37)
Gain (loss) on foreign currency cash flow hedges(a)
(3)(6)
Total other income (expense), net2 2 
Gain (loss) on foreign currency cash flow hedges(a)(c)
10 (25)
Southern Company Gas
Total cost of natural gas$898 $1,095 
Gain (loss) on energy-related cash flow hedges(a)
(20)
Total interest expense, net of amounts capitalized(76)(61)
Gain (loss) on interest rate cash flow hedges(a)
(1)(1)
Gain (loss) on interest rate fair value hedges(b)
13 (36)
Derivatives in Cash Flow
Hedging Relationships
Gain (Loss)
Recognized in OCI
on Derivative
(Effective Portion)
 Gain (Loss) Reclassified from Accumulated OCI into
Income (Effective Portion)
 Statements of Income LocationAmount
 2017 2016  2017 2016
 (in millions)  (in millions)
Southern Company        
Energy-related derivatives$(26) $(1) Depreciation and amortization$(12) $1
Interest rate derivatives(2) (189) Interest expense, net of amounts capitalized(15) (13)
Foreign currency derivatives114
 (1) Interest expense, net of amounts capitalized(17) (7)
     
Other income (expense), net(*)
139
 (13)
Total$86
 $(191)  $95
 $(32)
Alabama Power        
Interest rate derivatives$
 $(3) Interest expense, net of amounts capitalized$(5) $(5)
Georgia Power        
Interest rate derivatives$
 $
 Interest expense, net of amounts capitalized$(3) $(3)
Gulf Power        
Energy-related derivatives$(1) $
 Depreciation and amortization$
 $
Interest rate derivatives(1) (7) Interest expense, net of amounts capitalized
 
Total$(2) $(7)  $
 $
Mississippi Power        
Interest rate derivatives$
 $(1) Interest expense, net of amounts capitalized$(1) $(1)
Southern Power        
Energy-related derivatives$(21) $(1) Depreciation and amortization$(12) $1
Interest rate derivatives
 
 Interest expense, net of amounts capitalized
 (1)
Foreign currency derivatives114
 (1) Interest expense, net of amounts capitalized(17) (7)
 

 

 
Other income (expense), net(*)
139
 (13)
Total$93
 $(2)  $110
 $(20)
(a)Reclassified from accumulated OCI into earnings.
(*)The reclassification from accumulated OCI into other income (expense), net completely offsets currency gains and losses arising from changes in the U.S. currency exchange rates used to record the euro-denominated notes.
(b)For Southern Company Gas,fair value hedges, changes in the fair value of the derivative contracts are generally equal to changes in the fair value of the underlying debt and have no material impact on income.
(c)The reclassification from accumulated OCI into other income (expense), net completely offsets currency gains and losses arising from changes in the U.S. currency exchange rates used to record the euro-denominated notes.
The pre-tax effecteffects of energy relatedcash flow and fair value hedge accounting on income for energy-related derivatives and interest rate derivatives designated as cash flow hedging instruments recognized in OCI and those reclassified from accumulated OCI into earningswere immaterial for the successor nine months ended September 30, 2017, the successor periodtraditional electric operating companies for both periods presented.
84

Table of July 1, 2016 through September 30, 2016, and the predecessor period of January 1, 2016 through June 30, 2016 were as follows:ContentsIndex to Financial Statements
 
Gain (Loss) Recognized in OCI on Derivative
(Effective Portion)
  Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
Derivatives in Cash Flow Hedging RelationshipsNine Months Ended September 30, 2017 Statements of Income LocationNine Months Ended September 30, 2017
 (in millions)  (in millions)
Energy-related derivatives$(4) Cost of natural gas$


NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

At March 31, 2023 and December 31, 2022, the following amounts were recorded on the balance sheets related to cumulative basis adjustments for fair value hedges:
 Gain (Loss) Recognized in OCI on Derivative (Effective Portion)  Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
 Successor  Predecessor  Successor  Predecessor
Derivatives in Cash Flow Hedging Relationships
July 1, 2016
through
September 30, 2016
  January 1, 2016 through June 30, 2016 Statements of Income LocationJuly 1, 2016
through
September 30, 2016
  January 1, 2016 through June 30, 2016
 (in millions)  (in millions)  (in millions)  (in millions)
Energy-related derivatives$
  $
 Cost of natural gas$
  $(1)
Interest rate derivatives(5)  (64) Interest expense, net of amounts capitalized
  
Total$(5)  $(64)  $
  $(1)
Carrying Amount of the Hedged ItemCumulative Amount of Fair Value Hedging Adjustment included in Carrying Amount of the Hedged Item
Balance Sheet Location of Hedged ItemsAt March 31, 2023At December 31, 2022At March 31, 2023At December 31, 2022
(in millions)(in millions)
Southern Company
Long-term debt$(3,007)$(2,927)$228 $282 
Southern Company Gas
Long-term debt$(428)$(415)$69 $81 
For the three and nine months ended September 30, 2017March 31, 2023 and 2016,2022, the pre-tax effects of energy-related derivatives and interest rate derivatives designated as cash flow hedging instruments were immaterial for the other registrants.
For the three and nine months ended September 30, 2017 and 2016, the pre-tax effects of energy-related derivatives and interest rate derivatives not designated as hedging instruments on the statements of income of Southern Company and Southern Company Gas were as follows:
Gain (Loss)
Three Months Ended
March 31,
Derivatives in Non-Designated Hedging RelationshipsStatements of Income Location20232022
(in millions)
Energy-related derivatives:
Natural gas revenues(*)
$ $
Cost of natural gas13 21 
Total derivatives in non-designated hedging relationships$13 $23 
  Gain (Loss)
  Three Months Ended September 30, Nine Months Ended September 30,
Derivatives in Non-Designated Hedging RelationshipsStatements of Income Location20172016 20172016
  (in millions) (in millions)
Southern Company      
Energy Related derivatives:
Natural gas revenues(*)
$(17)$
 $48
$
 Cost of natural gas2
6
 (2)6
Total derivatives in non-designated hedging relationships$(15)$6
 $46
$6
(*)Excludes gains (losses) recorded in cost of natural gas associated with weather derivatives of $15 million for the nine months ended September 30, 2017 and immaterial amounts for all other periods presented.
  Gain (Loss)
  Successor
Successor Successor Successor  Predecessor
Derivatives in Non-Designated Hedging RelationshipsStatements of Income LocationThree Months Ended September 30, 2017 Three Months Ended September 30, 2016 Nine Months Ended September 30, 2017 July 1, 2016 through September 30, 2016  January 1, 2016 through June 30, 2016
  (in millions) (in millions) (in millions) (in millions)   
Southern Company Gas          
Energy Related derivatives:
Natural gas revenues(*)
$(17) $
 $48
 $
  $(1)
 Cost of natural gas2
 6
 (2) 6
  (62)
Total derivatives in non-designated hedging relationships$(15) $6
 $46
 $6
  $(63)
(*)Excludes gains recorded in cost of natural gas associated with weather derivatives of $15 million for the successor nine months ended September 30, 2017 and immaterial amounts for all other periods presented.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

(*)Excludes immaterial gains (losses) recorded in natural gas revenues associated with weather derivatives for both periods presented.
For the three and nine months ended September 30, 2017March 31, 2023 and 2016,2022, the pre-tax effects of energy-related derivatives and interest rate derivatives not designated as hedging instruments were immaterial for the traditional electric operating companies and Southern Power.
For the three and nine months ended September 30, 2017 and 2016, the pre-tax effects of interest rate derivatives designated as fair value hedging instruments were as follows:
Derivatives in Fair Value Hedging Relationships
  Gain (Loss)
  Three Months Ended September 30,Nine Months Ended September 30,
Derivative CategoryStatements of Income Location2017 20162017 2016
  (in millions)(in millions)
Southern Company       
Interest rate derivatives:Interest expense, net of amounts capitalized$(5) $(9)$(6) $15
Georgia Power       
Interest rate derivatives:Interest expense, net of amounts capitalized$
 $(5)$(1) $10
For the three and nine months ended September 30, 2017 and 2016, the pre-tax effects of interest rate derivatives designated as fair value hedging instruments were offset by changes to the carrying value of long-term debt.
There was no material ineffectiveness recorded in earnings for any registrant for any period presented.other Registrants.
Contingent Features
Southern Company, the traditional electric operating companies, Southern Power, and Southern Company GasThe Registrants do not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade. There are certain derivatives that could require collateral, but not accelerated payment, in the event of various credit rating changes of certain Southern Company subsidiaries. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. At September 30, 2017,March 31, 2023, the registrantsRegistrants had no collateral posted with derivative counterparties to satisfy these arrangements.
At September 30, 2017,For Southern Company and Southern Power, the fair value of interest rate derivative liabilities with contingent features was immaterial for all registrants. Theand the maximum potential collateral requirements arising from the credit-risk-related contingent features, at a rating below BBB- and/or Baa3, were $73 million and $23 million, respectively, at March 31, 2023. For the traditional electric operating companies and Southern Power, energy-related derivative liabilities with contingent features and the maximum potential collateral requirements arising from the credit-risk-related contingent features, at a rating below BBB- and/or Baa3, were immaterial for all registrants.at March 31, 2023. The maximum potential collateral requirements arising from the credit-risk-related contingent features for the traditional electric operating companies and Southern Power include certain agreements that could require collateral in the event that one or more Southern Company power pool participants has a credit rating change to below investment grade.
Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. If collateral is required, fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral are not offset against fair value amounts recognized for derivatives executed with the same counterparty.
Alabama Power and Southern Power maintain accounts with certain regional transmission organizations to facilitate financial derivative transactions. Basedtransactions and they may be required to post collateral based on the value of the positions in
85

Table of ContentsIndex to Financial Statements

NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)
(UNAUDITED)
these accounts and the associated margin requirements, Alabama Power and Southern Power may be required to post collateral.requirements. At September 30, 2017,March 31, 2023, cash collateral posted in these accounts was immaterial.$15 million for Southern Power and immaterial for Alabama Power. Southern Company Gas maintains accounts with brokers or the clearing houses of certain exchanges to facilitate financial derivative transactions. Based on the value of the positions in these accounts and the associated margin requirements, Southern Company Gas may be required to deposit cash into these accounts. At September 30, 2017,March 31, 2023, cash collateral held on deposit in broker margin accounts was $76$60 million.
Southern Company, the traditional electric operating companies, Southern Power, and Southern Company GasThe Registrants are exposed to losses related to financial instruments in the event of counterparties' nonperformance. Southern

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Company, the traditional electric operating companies, Southern Power, and Southern Company GasThe Registrants only enter into agreements and material transactions with counterparties that have investment grade credit ratings by Moody's and S&P or with counterparties who have posted collateral to cover potential credit exposure. Southern Company, the traditional electric operating companies, Southern Power, and Southern Company GasThe Registrants have also established risk management policies and controls to determine and monitor the creditworthiness of counterparties in order to mitigate Southern Company's, the traditional electric operating companies', Southern Power's, and Southern Company Gas'their exposure to counterparty credit risk. Southern Company Gas may require counterparties to pledge additional collateral when deemed necessary.
In addition, Southern Company Gas conducts credit evaluations and obtains appropriate internal approvals for the counterparty's line of credit before any transaction with the counterparty is executed. In most cases, the counterparty must have an investment grade rating, which includes a minimum long-term debt rating of Baa3 from Moody's and BBB- from S&P. Generally, Southern Company Gas requires credit enhancements by way of a guaranty, cash deposit, or letter of credit for transaction counterparties that do not have investment grade ratings.
Southern Company Gas uses established credit policies to determine and monitor the creditworthiness of counterparties, including requirements to post collateral or other credit security, as well as the quality of pledged collateral. Collateral or credit security is most often in the form of cash or letters of credit from an investment-grade financial institution, but may also utilizes master netting agreements whenever possibleinclude cash or U.S. government securities held by a trustee. Prior to mitigate exposure to counterparty credit risk. Whenentering a physical transaction, Southern Company Gas is engaged in more than one outstanding derivative transaction withassigns its counterparties an internal credit rating and credit limit based on the same counterpartycounterparties' Moody's, S&P, and it also has a legally enforceable netting agreement with that counterparty, the "net" mark-to-market exposure represents the netting of the positiveFitch ratings, commercially available credit reports, and negative exposures with that counterparty and a reasonable measure of Southern Company Gas' credit risk. Southern Company Gas also uses other netting agreements with certain counterparties with whom it conducts significant transactions. Master netting agreements enable Southern Company Gas to net certain assets and liabilities by counterparty. Southern Company Gas also nets across product lines and against cash collateral provided the master netting and cash collateral agreements include such provisions.audited financial statements. Southern Company Gas may require counterparties to pledge additional collateral when deemed necessary.
Southern Company the traditional electric operating companies, Southern Power, andGas utilizes netting agreements whenever possible to mitigate exposure to counterparty credit risk. Netting agreements enable Southern Company Gas to net certain assets and liabilities by counterparty across product lines and against cash collateral, provided the netting and cash collateral agreements include such provisions. While the amounts due from, or owed to, counterparties are settled net, they are recorded on a gross basis on the balance sheet as energy marketing receivables and energy marketing payables.
The Registrants do not anticipate a material adverse effect on thetheir respective financial statements as a result of counterparty nonperformance.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

(I)ACQUISITIONS AND DISPOSITIONS
Southern Company
Merger with Southern Company Gas
Southern Company Gas is an energy services holding company whose primary business is the distribution of natural gas through the natural gas distribution utilities. On July 1, 2016, Southern Company completed the Merger for a total purchase price of approximately $8.0 billion and Southern Company Gas became a wholly-owned, direct subsidiary of Southern Company.
The Merger was accounted for using the acquisition method of accounting with the assets acquired and liabilities assumed recognized at fair value as of the acquisition date. The following table presents the final purchase price allocation:
Southern Company Gas Purchase Price 
 (in millions)
Current assets$1,557
Property, plant, and equipment10,108
Goodwill5,967
Intangible assets400
Regulatory assets1,118
Other assets229
Current liabilities(2,201)
Other liabilities(4,742)
Long-term debt(4,261)
Noncontrolling interest(174)
Total purchase price$8,001
The excess of the purchase price over the estimated fair values of the assets acquired and liabilities assumed of $6.0 billion is recognized as goodwill, which is primarily attributable to positioning the Southern Company system to provide natural gas infrastructure to meet customers' growing energy needs and to compete for growth across the energy value chain. Southern Company anticipates that much of the value assigned to goodwill will not be deductible for tax purposes.
The valuation of identifiable intangible assets included customer relationships, trade names, and storage and transportation contracts with estimated lives of one to 28 years. The estimated fair value measurements of identifiable intangible assets were primarily based on significant unobservable inputs (Level 3).
The results of operations for Southern Company Gas have been included in Southern Company's consolidated financial statements from the date of acquisition and consist of operating revenues of $565 million and $2.8 billion and net income of $15 million and $303 million for the three and nine months ended September 30, 2017, respectively, and operating revenues and net income of $543 million and $4 million, respectively, for the three months ended September 30, 2016.
The following summarized unaudited pro forma consolidated statement of earnings information assumes that the acquisition of Southern Company Gas was completed on January 1, 2015. The summarized unaudited pro forma consolidated statement of earnings information includes adjustments for (i) intercompany sales, (ii) amortization of intangible assets, (iii) adjustments to interest expense to reflect current interest rates on Southern Company Gas debt and additional interest expense associated with borrowings by Southern Company to fund the Merger, and (iv) the elimination of nonrecurring expenses associated with the Merger.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

 For the Nine Months Ended September 30,
 2016
Operating revenues (in millions)
$16,609
Net income attributable to Southern Company (in millions)
$2,394
Basic Earnings Per Share (EPS)$2.52
Diluted EPS$2.51
These unaudited pro forma results are for comparative purposes only and may not be indicative of the results that would have occurred had this acquisition been completed on January 1, 2015 or the results that would be attained in the future.
Acquisition of PowerSecure
On May 9, 2016, Southern Company acquired all of the outstanding stock of PowerSecure, a provider of products and services in the areas of distributed generation, energy efficiency, and utility infrastructure, for $18.75 per common share in cash, resulting in an aggregate purchase price of $429 million. As a result, PowerSecure became a wholly-owned subsidiary of Southern Company.
The acquisition of PowerSecure was accounted for using the acquisition method of accounting with the assets acquired and liabilities assumed recognized at fair value as of the acquisition date. The following table presents the final purchase price allocation:
PowerSecure Purchase Price 
 (in millions)
Current assets$172
Property, plant, and equipment46
Intangible assets106
Goodwill284
Other assets4
Current liabilities(121)
Long-term debt, including current portion(48)
Deferred credits and other liabilities(14)
Total purchase price$429
The excess of the purchase price over the estimated fair values of the assets acquired and liabilities assumed of $284 million was recognized as goodwill, which is primarily attributable to expected business expansion opportunities for PowerSecure. Southern Company anticipates that the majority of the value assigned to goodwill will not be deductible for tax purposes.
The valuation of identifiable intangible assets included customer relationships, trade names, patents, backlog, and software with estimated lives of one to 26 years. The estimated fair value measurements of identifiable intangible assets were primarily based on significant unobservable inputs (Level 3).
The results of operations for PowerSecure have been included in Southern Company's consolidated financial statements from the date of acquisition and are immaterial to the consolidated financial results of Southern Company. Pro forma results of operations have not been presented for the acquisition because the effects of the acquisition were immaterial to Southern Company's consolidated financial results for all periods presented.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Southern Power
See Note 2 to the financial statements of Southern Power and Note 12 to the financial statements of Southern Company under "Southern Power" in Item 8 of the Form 10-K for additional information.
Acquisitions During the Nine Months Ended September 30, 2017
During the nine months ended September 30, 2017, in accordance with Southern Power's overall growth strategy, one of Southern Power's wholly-owned subsidiaries acquired the project discussed below. Acquisition-related costs were expensed as incurred and were not material.
Project FacilityResourceSeller; Acquisition Date
Approximate Nameplate Capacity (MW)
LocationSouthern Power Percentage OwnershipActual CODPPA Contract Period
BethelWindInvenergy,
January 6, 2017
276Castro County, TX100% January 201712 years
The aggregate amounts of revenue and net income recognized by Southern Power related to the Bethel facility included in Southern Power's condensed consolidated statements of income for year-to-date 2017 were immaterial. The Bethel facility did not have operating revenues or activities prior to completion of construction and the assets being placed in service; therefore, supplemental pro forma information as though the acquisition occurred as of the beginning of 2017 and for the comparable 2016 period is not meaningful and has been omitted.
In connection with Southern Power's 2016 acquisitions, allocations of the purchase price to individual assets were finalized during the nine months ended September 30, 2017 with no changes to amounts originally reported for Boulder 1, Grant Plains, Grant Wind, Henrietta, Mankato, Passadumkeag, Salt Fork, Tyler Bluff, and Wake Wind.
Subsequent to September 30, 2017, Southern Power purchased all of the redeemable noncontrolling interests, representing 10% of the membership interests, in Southern Turner Renewable Energy, LLC and repaid $14 million of notes payable to Turner Renewable Energy, LLC.
Construction Projects Completed and in Progress
During the nine months ended September 30, 2017, in accordance with its overall growth strategy, Southern Power completed construction of and placed in service, or continued construction of, the projects set forth in the following table. Through September 30, 2017, total costs of construction incurred for these projects were $494 million, of which $122 million remained in CWIP. Total aggregate construction costs, excluding the acquisition costs, are expected to be between $360 million and $415 million for the Mankato and Cactus Flats facilities. The ultimate outcome of these matters cannot be determined at this time.
Project FacilityResource
Approximate Nameplate Capacity (MW)
LocationActual/Expected CODPPA Contract Period
Projects Completed During the Nine Months Ended September 30, 2017
East PecosSolar120Pecos County, TXMarch 201715 years
LamesaSolar102Dawson County, TXApril 201715 years
Projects Under Construction as of September 30, 2017
Cactus Flats(*)
Wind148Concho County, TXThird quarter 201812-15 years
MankatoNatural Gas345Mankato, MNSecond quarter 201920 years
(*)On July 31, 2017, Southern Power acquired a 100% ownership interest in the Cactus Flats facility, which is in the early stages of construction, from RES America Developments, Inc.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Development Projects
In December 2016, as part of Southern Power's renewable development strategy, one of Southern Power's wholly-owned subsidiaries entered into a joint development agreement with Renewable Energy Systems Americas, Inc. to develop and construct approximately 3,000 MWs of wind projects. Also in December 2016, Southern Power signed agreements and made payments to purchase wind turbine equipment from Siemens Wind Power, Inc. and Vestas-American Wind Technology, Inc. to be used for construction of the facilities. All of the wind turbine equipment was delivered by April 2017, which allows the projects to qualify for 100% PTCs for 10 years following their expected commercial operation dates between 2018 and 2020. The ultimate outcome of these matters cannot be determined at this time.
Southern Company Gas
On October 15, 2017, Southern Company Gas subsidiary, Pivotal Utility Holdings, entered into agreements for the sale of the assets of two of its natural gas distribution utilities, Elizabethtown Gas and Elkton Gas, to South Jersey Industries, Inc. for a total cash purchase price of $1.7 billion. The completion of each sale is subject to the satisfaction or waiver of certain closing conditions, including, among others, (i) the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act; (ii) the receipt of required regulatory approvals, including the FERC, the Federal Communications Commission, the New Jersey BPU, and, with respect to the sale of Elkton Gas, the Maryland PSC; and (iii) other customary closing conditions. The sales are expected to be completed by the end of the third quarter 2018.
The ultimate outcome of these matters cannot be determined at this time.
(J)JOINT OWNERSHIP AGREEMENTS
Southern Company Gas
See Note 4 to the financial statements of Southern Company Gas in Item 8 of the Form 10-K for additional information.

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

Equity Method Investments
The carrying amounts of Southern Company Gas' equity method investments as of September 30, 2017 and December 31, 2016 and related income from those investments for the successor three and nine month periods ended September 30, 2017, the successor three-month period ended September 30, 2016, and for the predecessor period January 1, 2016 through June 30, 2016 were as follows:
Balance Sheet InformationSeptember 30, 2017December 31, 2016
 (in millions)
SNG$1,385
$1,394
Atlantic Coast Pipeline61
33
PennEast Pipeline49
22
Triton43
44
Pivotal JAX LNG, LLC40
16
Horizon Pipeline30
30
Other1
2
Total$1,609
$1,541
 SuccessorSuccessorSuccessorPredecessor
Income Statement InformationThree Months Ended September 30, 2017Three Months Ended September 30, 2016Nine Months Ended September 30, 2017January 1, 2016 through June 30, 2016
 (in millions)(in millions)(in millions)(in millions)
SNG$28
$27
$86
$
PennEast Pipeline1

5

Atlantic Coast Pipeline1
1
4

Triton1
1
3
1
Horizon Pipeline1

2
1
Total$32
$29
$100
$2
Southern Natural Gas
In September 2016, Southern Company Gas, through a wholly-owned, indirect subsidiary, acquired a 50% equity interest in SNG, which is accounted for as an equity method investment. On March 31, 2017, Southern Company Gas made an additional $50 million contribution to maintain its 50% equity interest in SNG. See Note 11 to the financial statements of Southern Company Gas under "Investment in SNG" in Item 8 of the Form 10-K for additional information on this investment. Selected financial information of SNG for the three and nine months ended September 30, 2017 and for the period September 1, 2016 through September 30, 2016 is as follows:
Income Statement InformationThree Months Ended September 30, 2017Nine Months Ended September 30, 2017September 1, 2016 through September 30, 2016
 (in millions)
Revenues$146
$445
$82
Operating income$71
$218
$60
Net income$57
$172
$55

NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)

(K) SEGMENT AND RELATED INFORMATION
Southern Company
The primary businesses of the Southern Company system are electricity sales by the traditional electric operating companies and Southern Power and the distribution of natural gas by Southern Company Gas. The four traditional electric operating companies – Alabama Power, Georgia Power, Gulf Power, and Mississippi Power – are vertically integrated utilities providing electric service in fourthree Southeastern states. Southern Power develops, constructs, acquires, owns, and manages power generation assets, including renewable energy and battery energy storage projects, and sells electricity at market-based rates in the wholesale market. Southern Company Gas distributes natural gas through the sevenits natural gas distribution utilities in seven states and is involved in several other complementary businesses including gas marketing services, wholesale gas services,pipeline investments and gas midstream operations.marketing services.
Southern Company's reportable business segments are the sale of electricity by the four traditional electric operating companies, the sale of electricity in the competitive wholesale market by Southern Power, and the sale of natural gas and other complementary products and services by Southern Company Gas. Revenues from sales by Southern Power to the traditional electric operating companies were $105$135 million and $295$105 million for the three and nine months ended September 30, 2017, respectively,March 31, 2023 and $110 million2022, respectively. Revenues from sales of natural gas from Southern Company Gas to the traditional electric operating companies and $313 millionSouthern Power were immaterial for the three and nine months ended September 30, 2016, respectively.both periods presented. The "All Other" column includes the Southern Company parent entity, which does not allocate operating expenses to business segments. Also, this category includes segments below the quantitative threshold for separate disclosure. These segments include providing distributed energy technologies and services to electric utilitiesresilience solutions and largedeploying microgrids for commercial, industrial, commercial, institutional,governmental, and municipal customers;utility customers, as well as investments in telecommunications and, for the three months ended March 31, 2022, leveraged lease projects. All other inter-segment revenues are not material.

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

Financial data for business segments and products and services for the three and nine months ended September 30, 2017March 31, 2023 and 20162022 was as follows:
Electric Utilities
Traditional
Electric Operating
Companies
Southern
Power
EliminationsTotalSouthern Company GasAll
Other
EliminationsConsolidated
(in millions)
Three Months Ended March 31, 2023
Operating revenues$4,113 $508 $(138)$4,483 $1,875 $166 $(44)$6,480 
Segment net income (loss)(a)(b)
610 102  712 309 (154)(5)862 
At March 31, 2023
Goodwill$ $2 $ $2 $5,015 $144 $ $5,161 
Total assets96,223 13,134 (575)108,782 24,222 2,606 (854)134,756 
Three Months Ended March 31, 2022
Operating revenues$4,191 $539 $(221)$4,509 $2,058 $123 $(42)$6,648 
Segment net income (loss)(a)
774 72 — 846 319 (125)(8)1,032 
At December 31, 2022
Goodwill$— $$— $$5,015 $144 $— $5,161 
Total assets95,861 13,081 (659)108,283 24,621 2,665 (678)134,891 
 Electric Utilities    
 
Traditional
Electric Operating
Companies
Southern
Power
EliminationsTotalSouthern Company Gas
All
Other
EliminationsConsolidated
 (in millions)
Three Months Ended
September 30, 2017:
        
Operating revenues$5,017
$618
$(112)$5,523
$565
$153
$(40)$6,201
Segment net income (loss)(a)(b)
1,008
124

1,132
15
(80)2
1,069
Nine Months Ended
September 30, 2017:
    

   
Operating revenues$12,960
$1,597
$(318)$14,239
$2,841
$442
$(119)$17,403
Segment net income (loss)(a)(b)(c)

276

276
303
(232)
347
Total assets at September 30, 2017$73,056
$14,648
$(322)$87,382
$22,190
$2,275
$(1,532)$110,315
Three Months Ended
September 30, 2016:
        
Operating revenues$5,236
$500
$(117)$5,619
$543
$139
$(37)$6,264
Segment net income (loss)(a)(b)
1,022
176

1,198
4
(62)(1)1,139
Nine Months Ended
September 30, 2016:
        
Operating revenues$13,120
$1,189
$(330)$13,979
$543
$311
$(118)$14,715
Segment net income (loss)(a)(b)
2,086
315

2,401
4
(146)(8)2,251
Total assets at December 31, 2016$72,141
$15,169
$(316)$86,994
$21,853
$2,474
$(1,624)$109,697
(a)Attributable to Southern Company.
(a)Attributable to Southern Company.
(b)
Segment net income (loss) for the traditional electric operating companies includes pre-tax charges for estimated probable losses on the Kemper IGCC of $34 million ($21 million after tax) and $88 million ($54 million after tax) for the three months ended September 30, 2017 and 2016, respectively, and $3.2 billion ($2.2 billion after tax) and $222 million ($137 million after tax) for the nine months ended September 30, 2017 and 2016, respectively. See Note (B) under "Integrated Coal Gasification Combined CycleKemper IGCC Schedule and Cost Estimate" for additional information.
(b)For Southern Power, includes a $16 million pre-tax gain ($12 million after tax) on the sale of spare parts.
(c)
Segment net income (loss) for the traditional electric operating companies also includes a pre-tax charge for the write-down of Gulf Power's ownership of Plant Scherer Unit 3 of $33 million ($20 million after tax) for the nine months ended September 30, 2017. See Note (B) under "Regulatory MattersGulf PowerRetail Base Rate Cases" for additional information.
Products and Services
 Electric Utilities' Revenues
RetailWholesaleOtherTotal
(in millions)
Three Months Ended March 31, 2023$3,599 $599 $285 $4,483 
Three Months Ended March 31, 20223,613 664 232 4,509 
 Southern Company Gas' Revenues
Gas
Distribution
Operations
Gas
Marketing
Services
OtherTotal
(in millions)
Three Months Ended March 31, 2023$1,610 $246 $19 $1,875 
Three Months Ended March 31, 20221,791 243 24 2,058 
87
  Electric Utilities' Revenues
Period Retail Wholesale Other Total
  (in millions)
Three Months Ended September 30, 2017 $4,615
 $718
 $190
 $5,523
Three Months Ended September 30, 2016 4,808
 613
 198
 5,619
         
Nine Months Ended September 30, 2017 $11,786
 $1,867
 $586
 $14,239
Nine Months Ended September 30, 2016 11,932
 1,455
 592
 13,979

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS:STATEMENTS (Continued)
(UNAUDITED)

 Southern Company Gas' Revenues
PeriodGas
Distribution
Operations
Gas
Marketing
Services
OtherTotal
 (in millions)
Three Months Ended September 30, 2017$430
$143
$(8)$565
Nine Months Ended September 30, 2017$2,119
$597
$125
$2,841
Three and Nine Months Ended September 30, 2016$420
$126
$(3)$543
Southern Company Gas
Southern Company Gas manages its business through fourthree reportable segments – gas distribution operations, gas marketing services, wholesale gas services,pipeline investments, and gas midstream operations.marketing services. The non-reportable segments are combined and presented as all other.
Gas distribution operations is the largest component of Southern Company Gas' business and includes natural gas local distribution utilities that construct, manage, and maintain intrastate natural gas pipelines and gas distribution facilities in sevenfour states.
Gas pipeline investments consists of joint ventures in natural gas pipeline investments including a 50% interest in SNG and a 50% joint ownership interest in the Dalton Pipeline. These natural gas pipelines enable the provision of diverse sources of natural gas supplies to the customers of Southern Company Gas. See Note 7 to the financial statements under "Southern Company Gas" in Item 8 of the Form 10-K for additional information.
Gas marketing services includesprovides natural gas marketing to end-use customers primarily in Georgia and Illinois. Additionally, gas marketing services provides home equipment protection products and services. Wholesale gas services provides natural gas asset management and/or related logistics services for each of Southern Company Gas' utilities except Nicor Gas as well as for non-affiliated companies. Additionally, wholesale gas services engages in natural gas storage and gas pipeline arbitrage and related activities. Gas midstream operations primarily consists of Southern Company Gas' pipeline investments, with storage and fuel operations also aggregated into this segment. Illinois through SouthStar.
The all other column includes segments below the quantitative threshold for separate disclosure, including theand subsidiaries that fall below the quantitative threshold for separate disclosure.
Afterdisclosure, including storage and fuels operations. The all other column included a natural gas storage facility in Texas through its sale in November 2022. See Note 15 to the Merger, Southernfinancial statements under "Southern Company Gas changed its segment performance measureGas" in Item 8 of the Form 10-K for additional information, including the sale of a natural gas storage facility in California expected to net income. In order to properly assess net income by segment, Southern Company Gas executed various intercompany note agreements to revise interest charges to its segments. Since such agreements did not existbe completed later in the predecessor period, Southern Company Gas is unable to provide the comparable net income.2023.
Business segment financial data for the successor three months ended September 30, 2017March 31, 2023 and 2016, the successor nine months ended September 30, 2017, the successor period of July 1, 2016 through September 30, 2016, and the predecessor period of January 1, 2016 through June 30, 20162022 was as follows:
Gas Distribution OperationsGas
Pipeline Investments
Gas Marketing ServicesTotalAll OtherEliminationsConsolidated
(in millions)
Three Months Ended March 31, 2023
Operating revenues$1,618 $8 $246 $1,872 $12 $(9)$1,875 
Segment net income221 31 50 302 7  309 
Total assets at March 31, 202322,223 1,583 1,596 25,402 9,598 (10,778)24,222 
Three Months Ended March 31, 2022
Operating revenues$1,803 $$243 $2,054 $16 $(12)$2,058 
Segment net income214 29 66 309 10 — 319 
Total assets at December 31, 202222,040 1,577 1,616 25,233 8,943 (9,555)24,621 
88
 Gas Distribution OperationsGas Marketing Services
Wholesale Gas Services(*)
Gas Midstream OperationsTotalAll OtherEliminationsConsolidated
 (in millions)
Successor – Three Months Ended September 30, 2017:      
Operating revenues$472
$143
$(24)$16
$607
$2
$(44)$565
Segment net income52
1
(23)14
44
(29)
15
Successor – Nine Months Ended September 30, 2017:      
Operating revenues$2,255
$597
$95
$53
$3,000
$7
$(166)$2,841
Segment net income223
36
28
38
325
(22)
303
Successor – Total assets at
September 30, 2017
$18,711
$2,089
$893
$2,359
$24,052
$11,400
$(13,262)$22,190


NOTES TO THE CONDENSED FINANCIAL STATEMENTS: (Continued)
(UNAUDITED)Table of ContentsIndex to Financial Statements

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.
 Gas Distribution OperationsGas Marketing Services
Wholesale Gas Services(*)
Gas Midstream OperationsTotalAll OtherEliminationsConsolidated
 (in millions)
Successor – Three Months Ended September 30, 2016:      
Operating revenues$455
$126
$(8)$13
$586
$2
$(45)$543
Segment net income (loss)27
(4)(11)14
26
(22)
4
Predecessor – January 1, 2016 through June 30, 2016:      
Operating revenues$1,575
$435
$(32)$25
$2,003
$4
$(102)$1,905
Segment EBIT353
109
(68)(6)388
(60)
328
Successor – Total assets at
December 31, 2016
$19,453
$2,084
$1,127
$2,211
$24,875
$11,145
$(14,167)$21,853
(*)The revenues for wholesale gas services are netted with costs associated with its energyPage
Combined Management's Discussion and risk management activities. A reconciliationAnalysis of operating revenuesFinancial Condition and intercompany revenues is shown in the following table.Results of Operations
The following Management's Discussion and Analysis of Financial Condition and Results of Operations is a combined presentation; however, information contained herein relating to any individual Registrant is filed by such Registrant on its own behalf and each Registrant makes no representation as to information related to the other Registrants.
89
 Third Party Gross Revenues Intercompany Revenues Total Gross Revenues Less Gross Gas Costs Operating Revenues
 (in millions)
Successor – Three Months Ended September 30, 2017$1,411
 $103
 $1,514
 $1,538
 $(24)
Successor – Nine Months Ended September 30, 20174,781
 362
 5,143
 5,048
 95
Successor – Three Months Ended September 30, 20161,688
 77
 1,765
 1,773
 (8)
Predecessor – January 1, 2016 through June 30, 2016$2,500
 $143
 $2,643
 $2,675
 $(32)

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS
OVERVIEW
Southern Company is a holding company that owns all of the common stock of three traditional electric operating companies (Alabama Power, Georgia Power, and Mississippi Power), Southern Power, and Southern Company Gas and owns other direct and indirect subsidiaries. The primary businesses of the Southern Company system are electricity sales by the traditional electric operating companies and Southern Power and the distribution of natural gas by Southern Company Gas. Southern Company's reportable segments are the sale of electricity by the traditional electric operating companies, the sale of electricity in the competitive wholesale market by Southern Power, and the sale of natural gas and other complementary products and services by Southern Company Gas. Southern Company Gas' reportable segments are gas distribution operations, gas pipeline investments, and gas marketing services. See Note (K) to the Condensed Financial Statements herein for additional information on segment reporting. Alabama Power, Georgia Power, and Mississippi Power each operate with one reportable business segment, since substantially all of their business is providing electric service to customers. Southern Power also operates its business with one reportable business segment, the sale of electricity in the competitive wholesale market. For additional information on the Registrants' primary business activities, see BUSINESS – "The Southern Company System" in Item 1 of the Form 10-K.
The Registrants continue to focus on several key performance indicators. For the traditional electric operating companies and Southern Company Gas, these indicators include, but are not limited to, customer satisfaction, plant availability, electric and natural gas system reliability, and execution of major construction projects. For Southern Power, these indicators include, but are not limited to, the equivalent forced outage rate and contract availability to evaluate operating results and help ensure its ability to meet its contractual commitments to customers. In addition, Southern Company and the Subsidiary Registrants focus on earnings per share and net income, respectively, as a key performance indicator.
Recent Developments
Alabama Power
During the first three months of 2023, Alabama Power continued construction of Plant Barry Unit 8, which is expected to be placed in service in November 2023. At March 31, 2023, project expenditures associated with Plant Barry Unit 8 totaled approximately $541 million.
On March 24, 2023, Alabama Power filed Rate CNP New Plant with the Alabama PSC to recover costs associated with the acquisition of the Central Alabama Generating Station. The filing reflected an annual increase in retail revenues of $78 million effective with June 2023 billings. Through May 2023, Alabama Power expects to recover substantially all costs associated with the Central Alabama Generating Station through Rate RSE, offset by revenues from a power sales agreement.
See Note (B) to the Condensed Financial Statements under "Alabama Power" herein for additional information.
Georgia Power
Plant Vogtle Units 3 and 4 Construction and Start-Up Status
Construction continues on Plant Vogtle Units 3 and 4 (with electric generating capacity of approximately 1,100 MWs each), in which Georgia Power currently holds a 45.7% ownership interest. Georgia Power's share of the total project capital cost forecast to complete Plant Vogtle Units 3 and 4, including contingency, through the end of the second quarter 2023 and the first quarter 2024, respectively, is $10.6 billion.
On March 6, 2023, Unit 3 achieved self-sustaining nuclear fission, commonly referred to as initial criticality, and, on April 1, 2023, the generator successfully synchronized to the power grid and generated electricity for the first time. Operators continue to perform tests at various power levels to help ensure the reactor performs as designed, and Southern Nuclear continues to remediate various equipment and component issues as they are identified. Based on the expected duration of start-up testing, Unit 3 is projected to be placed in service during May or June 2023. The projected schedule for Unit 3 primarily depends on the progression of pre-operational testing and start-up,
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
which may be impacted by further equipment, component, and/or other operational challenges. Hot functional testing for Unit 4 commenced on March 20, 2023, with fuel load projected to occur in the third quarter 2023. Unit 4 is projected to be placed in service during late fourth quarter 2023 or the first quarter 2024. The projected schedule for Unit 4 primarily depends on potential impacts arising from Unit 4 testing activities overlapping with Unit 3 start-up and commissioning; maintaining overall construction productivity and production levels, particularly in subcontractor scopes of work; and maintaining appropriate levels of craft laborers. Any further delays could result in later in-service dates and cost increases.
During the first quarter 2023, established construction contingency totaling $20 million was assigned to the base capital cost forecast for costs primarily associated with additional craft and support resources.
Georgia Power and the other Vogtle Owners do not agree on the starting dollar amount for the determination of cost increases subject to the cost-sharing and tender provisions of the Global Amendments (as defined in Note (B) to the Condensed Financial Statements under "Georgia Power – Nuclear Construction – Joint Owner Contracts" herein). The other Vogtle Owners notified Georgia Power that they believe the project capital cost forecast approved by the Vogtle Owners in February 2022 triggered the tender provisions.
In June 2022 and July 2022, OPC and Dalton, respectively, notified Georgia Power of their purported exercises of their tender options. Georgia Power did not accept these purported tender exercises. In June 2022, OPC and MEAG Power each filed a separate lawsuit against Georgia Power in the Superior Court of Fulton County, Georgia seeking a declaratory judgment that the starting dollar amount is $17.1 billion and that the cost-sharing and tender provisions had been triggered. In July 2022, Georgia Power filed its answers in the lawsuits filed by MEAG Power and OPC and included counterclaims seeking a declaratory judgment that the starting dollar amount is $18.38 billion and that costs related to force majeure events are excluded prior to calculating the cost-sharing and tender provisions and when calculating Georgia Power's related financial obligations. In September 2022, Dalton filed complaints in each of these lawsuits.
Also in September 2022, Georgia Power and MEAG Power reached an agreement to resolve their dispute regarding the proper interpretation of the cost-sharing and tender provisions of the Global Amendments. Under the terms of the agreement, among other items, (i) MEAG Power will not exercise its tender option and will retain its full ownership interest in Plant Vogtle Units 3 and 4; (ii) Georgia Power will reimburse a portion of MEAG Power's costs of construction for Plant Vogtle Units 3 and 4 as such costs are incurred and with no further adjustment for force majeure costs, which payments will total approximately $92 million based on the current project capital cost forecast; and (iii) Georgia Power will reimburse 20% of MEAG Power's costs of construction with respect to any amounts over the current project capital cost forecast, with no further adjustment for force majeure costs. In October 2022, MEAG Power and Georgia Power filed a notice of settlement and voluntary dismissal of the pending litigation described above, including Georgia Power's counterclaim, and Dalton dismissed its related complaint.
Georgia Power recorded pre-tax charges to income through the fourth quarter 2022 of $407 million ($304 million after tax) associated with the cost-sharing and tender provisions of the Global Amendments, including the settlement with MEAG Power. This total is included in the total project capital cost forecast and will not be recovered from retail customers. The settlement with MEAG Power does not resolve the separate pending litigation with OPC, including Dalton's associated complaint, described above. Georgia Power may be required to record further pre-tax charges to income of up to approximately $345 million associated with the cost-sharing and tender provisions of the Global Amendments for OPC and Dalton based on the current project capital cost forecast.
Georgia Power's ownership interest in Plant Vogtle Units 3 and 4 continues to be 45.7%. Georgia Power believes the increases in the total project capital cost forecast through December 31, 2022 triggered the tender provisions, but Georgia Power disagrees with OPC and Dalton on the tender provisions trigger date. Valid notices of tender from OPC and Dalton would require Georgia Power to pay 100% of their respective remaining shares of the costs necessary to complete Plant Vogtle Units 3 and 4. Georgia Power's incremental ownership interest will be calculated and conveyed to Georgia Power after Plant Vogtle Units 3 and 4 are placed in service.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
The ultimate impact of these matters on the construction schedule and project capital cost forecast and related cost recovery for Plant Vogtle Units 3 and 4 cannot be determined at this time. See Note (B) to the Condensed Financial Statements under "Georgia Power – Nuclear Construction" herein for additional information.
Fuel Cost Recovery
On February 28, 2023, Georgia Power filed a request with the Georgia PSC to increase fuel rates. On April 24, 2023, Georgia Power filed an updated request reflecting a 54% increase in fuel rates effective June 1, 2023, which is expected to increase annual billings by approximately $1.1 billion. Changes in fuel rates have no significant effect on Georgia Power's net income but do impact the related operating cash flows. Georgia Power expects the Georgia PSC to make a final decision on this matter on May 16, 2023. The ultimate outcome of this matter cannot be determined at this time. See Note (B) to the Condensed Financial Statements under "Georgia Power – Fuel Cost Recovery" herein for additional information.
RESULTS OF OPERATIONS
Southern Company
Net Income
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(170)(16.5)
Consolidated net income attributable to Southern Company was $0.9 billion ($0.79 per share) in the first quarter 2023 compared to $1.0 billion ($0.97 per share) for the corresponding period in 2022. The decrease was primarily due to higher depreciation and amortization, a decrease in retail electric revenues associated with milder weather in the first quarter 2023 compared to the corresponding period in 2022, and higher interest expense, partially offset by an increase in retail electric revenues associated with rates and pricing and an increase in other revenues.
Retail Electric Revenues
In the first quarter 2023, retail electric revenues were $3.60 billion compared to $3.61 billion for the corresponding period in 2022. Details of the changes in retail electric revenues were as follows:
 
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Rates and pricing$97 2.7 %
Sales growth0.2 
Weather(152)(4.2)
Fuel and other cost recovery34 0.9 
Retail electric revenues$(14)(0.4)%
Revenues associated with changes in rates and pricing increased in the first quarter 2023 when compared to the corresponding period in 2022. The increase was primarily due to an increase in Rate CNP Compliance revenues at Alabama Power and base tariff increases in accordance with Georgia Power's 2022 ARP. In addition, revenues associated with Rate CNP Depreciation increased $73 million and were fully offset by customer bill credits of $73 million related to the flowback of excess accumulated deferred income taxes at Alabama Power. See Note 2 to the financial statements under "Alabama Power" and "Georgia Power – Rate Plans" in Item 8 of the Form 10-K for additional information.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
Revenues attributable to changes in sales increased in the first quarter 2023 when compared to the corresponding period in 2022. Weather-adjusted residential and commercial KWH sales increased 1.2% and 1.8%, respectively, in the first quarter 2023 when compared to the corresponding period in 2022 primarily due to residential customer growth and increased commercial usage. Commercial customer usage increased as customers continued their return to regular business trends. Industrial KWH sales decreased 1.6% in the first quarter 2023 when compared to the corresponding period in 2022 primarily due to a decrease in the chemicals sector, partially offset by increases in the pipeline and primary metals sectors.
Fuel and other cost recovery revenues increased $34 million in the first quarter 2023 compared to the corresponding period in 2022 primarily due to higher recoverable fuel costs. Electric rates for the traditional electric operating companies include provisions to adjust billings for fluctuations in fuel costs, including the energy component of purchased power costs. Under these provisions, fuel revenues generally equal fuel expenses, including the energy component of PPA costs, and do not affect net income. The traditional electric operating companies each have one or more regulatory mechanisms to recover other costs such as environmental and other compliance costs, storm damage, new plants, and PPA capacity costs. See Note 2 to the financial statements in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein for additional information.
Wholesale Electric Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(65)(9.8)
In the first quarter 2023, wholesale electric revenues were $599 million compared to $664 million for the corresponding period in 2022. The decrease was primarily due to a $97 million decrease in energy revenues in the first quarter 2023 as a result of fuel and purchased power price decreases when compared to the corresponding period in 2022 and a net decrease in the volume of KWHs sold primarily associated with natural gas PPAs at Southern Power. The decrease in energy revenues was partially offset by an increase in capacity revenues of $32 million in the first quarter 2023 primarily resulting from a new power sales agreement that began in July 2022 at Alabama Power and a net increase in capacity sales from natural gas PPAs at Southern Power.
Wholesale electric revenues consist of revenues from PPAs and short-term opportunity sales. Wholesale electric revenues from PPAs (other than solar and wind PPAs) have both capacity and energy components. Capacity revenues generally represent the greatest contribution to net income and are designed to provide recovery of fixed costs plus a return on investment. Energy revenues will vary depending on fuel prices, the market prices of wholesale energy compared to the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation. Increases and decreases in energy revenues that are driven by fuel prices are accompanied by an increase or decrease in fuel costs and do not have a significant impact on net income. Energy sales from solar and wind PPAs do not have a capacity charge and customers either purchase the energy output of a dedicated renewable facility through an energy charge or through a fixed price related to the energy. As a result, the ability to recover fixed and variable operations and maintenance expenses is dependent upon the level of energy generated from these facilities, which can be impacted by weather conditions, equipment performance, transmission constraints, and other factors. Wholesale electric revenues at Mississippi Power include FERC-regulated municipal and rural association sales under cost-based tariffs as well as market-based sales. Short-term opportunity sales are made at market-based rates that generally provide a margin above the Southern Company system's variable cost to produce the energy.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
Other Electric Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$137.3
In the first quarter 2023, other electric revenues were $190 million compared to $177 million for the corresponding period in 2022. The increase was primarily due to an increase of $7 million in transmission revenues at the traditional electric operating companies and Southern Power, an increase of $6 million in outdoor lighting sales at Georgia Power, and a $4 million gain on the resale of gas at Alabama Power, partially offset by a $5 million decrease in cogeneration steam revenue primarily associated with lower natural gas prices at Alabama Power.
Natural Gas Revenues
In the first quarter 2023, natural gas revenues were $1.9 billion compared to $2.1 billion for the corresponding period in 2022. Details of the changes in natural gas revenues were as follows:
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Infrastructure replacement programs and rate changes$50 2.4 %
Gas costs and other cost recovery(199)(9.7)
Gas marketing services(21)(1.0)
Other(13)(0.6)
Natural gas revenues$(183)(8.9)%
Revenues from infrastructure replacement programs and rate changes at the natural gas distribution utilities increased in the first quarter 2023 compared to the corresponding period in 2022 primarily due to rate increases at the natural gas distribution utilities and continued investment in infrastructure replacement. See Note 2 to the financial statements under "Southern Company Gas – Rate Proceedings" in Item 8 of the Form 10-K for additional information.
Revenues from gas costs and other cost recovery decreased in the first quarter 2023 compared to the corresponding period in 2022 primarily due to lower natural gas cost recovery associated with the timing of natural gas purchases and the recovery of those costs from customers. Natural gas distribution rates include provisions to adjust billings for fluctuations in natural gas costs. Therefore, gas costs recovered through natural gas revenues generally equal the amount expensed in cost of natural gas and do not affect net income from the natural gas distribution utilities.
Revenues from gas marketing services decreased in the first quarter 2023 compared to the corresponding period in 2022 primarily due to lower natural gas prices and the timing of unrealized hedge losses, partially offset by higher variable price spreads in Georgia and Illinois and higher customer count in Georgia.
Other Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$8159.6
In the first quarter 2023, other revenues were $217 million compared to $136 million for the corresponding period in 2022. The increase was primarily due to increases of $36 million related to distributed infrastructure projects at PowerSecure, $24 million in unregulated sales associated with power delivery construction and maintenance projects primarily at Georgia Power, and $15 million in unregulated sales of products and services at Alabama Power.
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AND RESULTS OF OPERATIONS (Continued)
Fuel and Purchased Power Expenses
 
First Quarter 2023 vs.
First Quarter 2022
 (change in millions)(% change)
Fuel$(61)(5.5)
Purchased power10 4.3
Total fuel and purchased power expenses$(51)
In the first quarter 2023, total fuel and purchased power expenses were $1.29 billion compared to $1.34 billion for the corresponding period in 2022. The decrease was due to a $42 million decrease in the average cost of fuel and purchased power and a $9 million net decrease in the volume of KWHs generated and purchased.
Fuel and purchased power energy transactions at the traditional electric operating companies are generally offset by fuel revenues and do not have a significant impact on net income. See Note 2 to the financial statements in Item 8 of the Form 10-K for additional information. Fuel expenses incurred under Southern Power's PPAs are generally the responsibility of the counterparties and do not significantly impact net income.
Details of the Southern Company system's generation and purchased power were as follows:
First Quarter 2023First Quarter 2022
Total generation (in billions of KWHs)(a)
4446
Total purchased power (in billions of KWHs)
54
Sources of generation (percent)(a) —
Gas5446
Coal1523
Nuclear1717
Hydro56
Wind, Solar, and Other98
Cost of fuel, generated (in cents per net KWH)
Gas(a)
3.133.53
Coal4.023.11
Nuclear0.710.72
Average cost of fuel, generated (in cents per net KWH)(a)
2.802.86
Average cost of purchased power (in cents per net KWH)(b)
5.505.58
(a)Excludes Central Alabama Generating Station KWHs and associated cost of fuel through July 12, 2022 as its fuel was previously provided by the purchaser under a power sales agreement. See Note 15 to the financial statements under "Alabama Power" in Item 8 of the Form 10-K for additional information.
(b)Average cost of purchased power includes fuel purchased by the Southern Company system for tolling agreements where power is generated by the provider.
Fuel
In the first quarter 2023, fuel expense was $1.05 billion compared to $1.11 billion for the corresponding period in 2022. The decrease was primarily due to a 39.1% decrease in the volume of KWHs generated by coal and an 11.3% decrease in the average cost of natural gas per KWH generated, partially offset by a 29.3% increase in the average cost of coal per KWH generated, a 16.3% increase in the volume of KWHs generated by natural gas, and a 13.9% decrease in the volume of KWHs generated by hydro.
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AND RESULTS OF OPERATIONS (Continued)
Purchased Power
In the first quarter 2023, purchased power expense was $242 million compared to $232 million for the corresponding period in 2022. The increase was primarily due to a 1.7% increase in the volume of KWHs purchased, partially offset by a 1.4% decrease in the average cost per KWH purchased primarily due to a decrease in natural gas prices.
Energy purchases will vary depending on demand for energy within the Southern Company system's electric service territory, the market prices of wholesale energy as compared to the cost of the Southern Company system's generation, and the availability of the Southern Company system's generation.
Cost of Natural Gas
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(197)(18.0)
Excluding Atlanta Gas Light, which does not sell natural gas to end-use customers, natural gas distribution rates include provisions to adjust billings for fluctuations in natural gas costs. Therefore, gas costs recovered through natural gas revenues generally equal the amount expensed in cost of natural gas and do not affect net income from the natural gas distribution utilities. Cost of natural gas at the natural gas distribution utilities represented 85% of the total cost of natural gas in the first quarter 2023.
In the first quarter 2023, cost of natural gas was $0.9 billion compared to $1.1 billion for the corresponding period in 2022. The decrease reflects lower gas cost recovery as a result of a 31% decrease in natural gas prices in the first quarter 2023 compared to the corresponding period in 2022.
Cost of Other Sales
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$5884.1
In the first quarter 2023, cost of other sales was $127 million compared to $69 million for the corresponding period in 2022. The increase was primarily due to a $29 million increase related to distributed infrastructure projects at PowerSecure and a $24 million increase from unregulated power delivery construction and maintenance projects primarily at Georgia Power.
Other Operations and Maintenance Expenses
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(34)(2.2)
In the first quarter 2023, other operations and maintenance expenses were $1.48 billion compared to $1.52 billion for the corresponding period in 2022. The decrease was primarily due to decreases of $45 million in storm damage recovery as authorized in Georgia Power's 2022 ARP, $44 million in generation expenses primarily associated with non-outage and scheduled outage maintenance costs, and $31 million in transmission and distribution expenses primarily related to line maintenance, partially offset by a $39 million increase in technology infrastructure and application production costs, a $25 million decrease in nuclear property insurance refunds at Georgia Power and Alabama Power, a $12 million increase in compensation and benefit expenses, and a $9 million increase related to the injuries and damages reserves at Alabama Power and Georgia Power.
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AND RESULTS OF OPERATIONS (Continued)
Depreciation and Amortization
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$21924.6
In the first quarter 2023, depreciation and amortization was $1.1 billion compared to $0.9 billion for the corresponding period in 2022. The increase was primarily due to an increase of $179 million resulting from higher depreciation rates at Alabama Power and Georgia Power and an increase of $26 million from additional plant in service. See Notes 2 and 5 to the financial statements under "Alabama Power" and "Depreciation and Amortization," respectively, in Item 8 of the Form 10-K for additional information.
Taxes Other Than Income Taxes
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$225.9
In the first quarter 2023, taxes other than income taxes were $394 million compared to $372 million for the corresponding period in 2022. The increase primarily reflects a $13 million increase in property taxes at the traditional electric operating companies and a $9 million increase in utility license taxes at Alabama Power.
Gain on Dispositions, Net
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1982.6
In the first quarter 2023, gain on dispositions, net was $42 million compared to $23 million for the corresponding period in 2022. The increase was primarily due to a gain on the sale of spare parts at Southern Power in 2023.
Allowance for Equity Funds Used During Construction
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1427.5
In the first quarter 2023, allowance for equity funds used during construction was $65 million compared to $51 million for the corresponding period in 2022. The increase was primarily associated with an increase in capital expenditures subject to AFUDC at Georgia Power and an increase in capital expenditures related to Plant Barry Unit 8 construction at Alabama Power. See Note 2 to the financial statements in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein under "Alabama Power – Certificates of Convenience and Necessity" for additional information.
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AND RESULTS OF OPERATIONS (Continued)
Interest Expense, Net of Amounts Capitalized
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$12026.0
In the first quarter 2023, interest expense, net of amounts capitalized was $582 million compared to $462 million for the corresponding period in 2022. The increase primarily reflects approximately $62 million related to higher interest rates and $39 million related to higher average outstanding borrowings. See FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" and "Financing Activities" herein for additional information on borrowings.
Income Taxes
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(76)(43.9)
In the first quarter 2023, income taxes were $97 million compared to $173 million for the corresponding period in 2022. The decrease was primarily due to lower pre-tax earnings and an increase in the flowback of certain excess deferred income taxes at Alabama Power, partially offset by a decrease in the flowback of certain excess deferred income taxes at Georgia Power that ended in 2022. See Note (G) to the Condensed Financial Statements herein for additional information.
Net Loss Attributable to Noncontrolling Interests
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(18)(40.0)
Substantially all noncontrolling interests relate to renewable projects at Southern Power. In the first quarter 2023, net loss attributable to noncontrolling interests was $63 million compared to $45 million for the corresponding period in 2022. The increased loss was primarily due to $16 million in higher HLBV loss allocations to Southern Power's wind tax equity partners due to higher wind PTCs in 2023.
Alabama Power
Net Income
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(92)(26.5)
Alabama Power's net income after dividends on preferred stock in the first quarter 2023 was $255 million compared to $347 million for the corresponding period in 2022. The decrease was primarily due to an increase in depreciation rates effective January 2023, a decrease in weather-related revenues due to milder weather in Alabama Power's service territory in the first quarter 2023 compared to the corresponding period in 2022, and a decrease in customer usage. These decreases to income were partially offset by a decrease in income tax expense and an increase in Rate CNP Compliance revenues. See Note 2 to the financial statements in Item 8 of the Form 10-K under "Alabama Power" for additional information.
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AND RESULTS OF OPERATIONS (Continued)
Retail Revenues
In both the first quarter 2023 and 2022, retail revenues were $1.38 billion. Details of the changes in retail revenues were as follows:
 
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Rates and pricing$58 4.2 %
Sales decline(17)(1.3)
Weather(61)(4.4)
Fuel and other cost recovery22 1.6 
Retail revenues$0.1 %
Revenues associated with changes in rates and pricing increased in the first quarter 2023 when compared to the corresponding period in 2022 primarily due to an increase in Rate CNP Compliance revenues. In addition, revenues associated with Rate CNP Depreciation increased $73 million and were fully offset by customer bill credits of $73 million related to the flowback of excess accumulated deferred income taxes. See Note 2 to the financial statements under "Alabama Power" in Item 8 of the Form 10-K for additional information.
Revenues attributable to changes in sales decreased in the first quarter 2023 when compared to the corresponding period in 2022. Weather-adjusted residential KWH sales increased 0.1% and weather-adjusted commercial KWH sales decreased 0.3% in the first quarter 2023 when compared to the corresponding period in 2022. The residential and commercial changes were primarily due to residential customer growth and a decrease in commercial usage, respectively. Industrial KWH sales decreased 2.4% primarily due to decreases in the chemicals sector, partially offset by an increase in the primary metals sector.
Fuel and other cost recovery revenues increased in the first quarter 2023 when compared to the corresponding period in 2022 primarily as a result of higher recoverable fuel costs.
Electric rates include provisions to recognize the recovery of fuel costs, purchased power costs, PPAs certificated by the Alabama PSC, and costs associated with the NDR. Under these provisions, fuel and other cost recovery revenues generally equal fuel and other cost recovery expenses and do not affect net income. See Note 2 to the financial statements under "Alabama Power" in Item 8 of the Form 10-K for additional information.
Wholesale Revenues Non-Affiliates
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$2723.7
In the first quarter 2023, wholesale revenues from sales to non-affiliates were $141 million compared to $114 million for the corresponding period in 2022. The increase was primarily due to an 18.1% increase in the volume of KWH sales and a 4.8% increase in the price of energy both due to a new power sales agreement that began in July 2022.
Wholesale revenues from sales to non-affiliates will vary depending on fuel prices, the market prices of wholesale energy compared to the cost of Alabama Power's and the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation. Increases and decreases in energy revenues that are driven by fuel prices are accompanied by an increase or decrease in fuel costs and do not affect net income. Short-term opportunity energy sales are also included in wholesale energy sales to non-affiliates. These opportunity sales are made at market-based rates that generally provide a margin above Alabama Power's variable cost to produce the energy.
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Wholesale Revenues Affiliates
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(46)(70.8)
In the first quarter 2023, wholesale revenues from sales to affiliates were $19 million compared to $65 million for the corresponding period in 2022. The decrease was primarily due to a 63.5% decrease in the volume of KWH sales due to higher demand for Southern Company system lower cost generation and an 18.2% decrease in the price of energy due to lower natural gas prices.
Wholesale revenues from sales to affiliated companies will vary depending on demand and the availability and cost of generating resources at each company. These affiliate sales are made in accordance with the IIC, as approved by the FERC. Energy revenues related to these transactions do not have a significant impact on earnings since this energy is generally sold at marginal cost and energy purchases are generally offset by energy revenues through Alabama Power's energy cost recovery clause.
Other Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1516.5
In the first quarter 2023, other revenues were $106 million compared to $91 million for the corresponding period in 2022. The increase was primarily due to an increase of $15 million in unregulated sales of products and services and a $4 million gain on the resale of gas, partially offset by a $5 million decrease in cogeneration steam revenue primarily associated with lower natural gas prices.
Fuel and Purchased Power Expenses
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Fuel$(25)(7.5)
Purchased power – non-affiliates34 50.7 
Purchased power – affiliates33 126.9 
Total fuel and purchased power expenses$42 
In the first quarter 2023, total fuel and purchased power expenses were $468 million compared to $426 million for the corresponding period in 2022. The increase was due to a $39 million net increase related to the volume of KWHs generated and purchased and a $3 million net increase in the cost of fuel and purchased power.
Fuel and purchased power energy transactions do not have a significant impact on earnings, since energy expenses are generally offset by energy revenues through Alabama Power's energy cost recovery clause. See Note 2 to the financial statements under "Alabama Power – Rate ECR" in Item 8 of the Form 10-K for additional information.
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AND RESULTS OF OPERATIONS (Continued)
Details of Alabama Power's generation and purchased power were as follows:
First Quarter 2023First Quarter 2022
Total generation (in billions of KWHs)(a)
1415
Total purchased power (in billions of KWHs)
32
Sources of generation (percent)(a) —
Coal3042
Nuclear2825
Gas2919
Hydro1314
Cost of fuel, generated (in cents per net KWH) —
Coal3.332.90
Nuclear0.670.67
Gas(a)
3.373.45
Average cost of fuel, generated (in cents per net KWH)(a)
2.492.36
Average cost of purchased power (in cents per net KWH)(b)
6.356.82
(a)Excludes Central Alabama Generating Station KWHs and associated cost of fuel through July 12, 2022 as its fuel was previously provided by the purchaser under a power sales agreement. See Note 15 to the financial statements under "Alabama Power" in Item 8 of the Form 10-K for additional information.
(b)Average cost of purchased power includes fuel, energy, and transmission purchased by Alabama Power for tolling agreements where power is generated by the provider.
Fuel
In the first quarter 2023, fuel expense was $308 million compared to $333 million for the corresponding period in 2022. The decrease was primarily due to a 35.0% decrease in the volume of KWHs generated by coal and a 2.3% decrease in the average cost of natural gas per KWH generated, which excludes tolling agreements, partially offset by a 36.6% increase in the volume of KWHs generated by natural gas, a 14.8% increase in the average cost of coal per KWH generated, and a 12.8% decrease in the volume of KWHs generated by hydro facilities as a result of less rainfall in the first quarter 2023 compared to the corresponding period in 2022.
Purchased Power – Non-Affiliates
In the first quarter 2023, purchased power expense from non-affiliates was $101 million compared to $67 million for the corresponding period in 2022. The increase was primarily due to a 57.6% increase in the volume of KWHs purchased due to the availability of lower cost generation from market resources, partially offset by an 18.7% decrease in the average cost per KWH purchased due to a decrease in natural gas prices.
Energy purchases from non-affiliates will vary depending on the market prices of wholesale energy as compared to the cost of the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation.
Purchased Power – Affiliates
In the first quarter 2023, purchased power expense from affiliates was $59 million compared to $26 million for the corresponding period in 2022. The increase was primarily due to an 82.5% increase in the volume of KWHs purchased due to the availability of lower cost gas generation in the Southern Company system and a 22.3% increase in the average cost per KWH purchased due to the purchase of additional capacity for reliability.
Energy purchases from affiliates will vary depending on demand for energy and the availability and cost of generating resources at each company within the Southern Company system. These purchases are made in accordance with the IIC or other contractual agreements, as approved by the FERC.
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AND RESULTS OF OPERATIONS (Continued)
Other Operations and Maintenance Expenses
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$153.7
In the first quarter 2023, other operations and maintenance expenses were $424 million compared to $409 million for the corresponding period in 2022. The increase was primarily due to a $14 million decrease in nuclear property insurance refunds and increases of $8 million in expenses related to unregulated products and services, $7 million in technology infrastructure and application production costs, $5 million related to the injuries and damages reserve, $4 million in employee compensation and benefits, and $3 million in bad debt expense. The increases were partially offset by a $30 million decrease in generation expenses primarily associated with planned outages and maintenance.
Depreciation and Amortization
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$13060.5
In the first quarter 2023, depreciation and amortization was $345 million compared to $215 million for the corresponding period in 2022. The increase was primarily due to an increase in depreciation rates effective in 2023. See Notes 2 and 5 to the financial statements under "Alabama Power" and "Depreciation and Amortization," respectively, in Item 8 of the Form 10-K for additional information.
Taxes Other Than Income Taxes
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1110.6
In the first quarter 2023, taxes other than income taxes were $115 million compared to $104 million for the corresponding period in 2022. The increase was primarily due to an increase in utility license taxes.
Interest Expense, Net of Amounts Capitalized
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1415.7
In the first quarter 2023, interest expense, net of amounts capitalized was $103 million compared to $89 million for the corresponding period in 2022. The increase was primarily associated with increases of approximately $11 million related to higher average outstanding borrowings and $5 million related to higher interest rates. See FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" herein for additional information on borrowings.
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Income Taxes (Benefit)
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(109)N/M
In the first quarter 2023, income tax benefit was $2 million compared to income tax expense of $107 million for the corresponding period in 2022. The change was primarily due to an increase in the flowback of certain excess deferred income taxes and lower pre-tax earnings in the first quarter 2023. See Note 2 to the financial statements under "Alabama Power – Excess Accumulated Deferred Income Tax Accounting Order" in Item 8 of the Form 10-K and Note (G) to the Condensed Financial Statements herein for additional information.
Georgia Power
Net Income
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(89)(23.1)
Georgia Power's net income in the first quarter 2023 was $296 million compared to $385 million for the corresponding period in 2022. The decrease was primarily due to a decrease in retail revenues associated with milder weather in the first quarter 2023 compared to the corresponding period in 2022. Partially offsetting this net income reduction were the impacts of the 2022 ARP effective January 1, 2023, including increased retail rates, partially offset by higher depreciation and amortization. See Note 2 to the financial statements under "Georgia Power" in Item 8 of the Form 10-K for additional information.
Retail Revenues
In the first quarter 2023, retail revenues were $1.98 billion compared to $2.02 billion for the corresponding period in 2022. Details of the changes in retail revenues were as follows:
 
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Rates and pricing$34 1.7 %
Sales growth23 1.1 
Weather(85)(4.2)
Fuel cost recovery(8)(0.4)
Retail revenues$(36)(1.8)%
Revenues associated with changes in rates and pricing increased in the first quarter 2023 when compared to the corresponding period in 2022. The increase was primarily due to base tariff increases in accordance with the 2022 ARP. See Note 2 to the financial statements under "Georgia Power – Rate Plans" in Item 8 of the Form 10-K for additional information.
Revenues attributable to changes in sales increased in the first quarter 2023 when compared to the corresponding period in 2022. Weather-adjusted residential and commercial KWH sales increased 2.2% and 2.5%, respectively, primarily due to increased customer usage and customer growth. Commercial customer usage increased as customers continued their return to regular business trends. Weather-adjusted industrial KWH sales decreased 2.1% primarily due to decreases in the textile, chemical, and rubber sectors, partially offset by increases in the electronic, transportation, and pipeline sectors.
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AND RESULTS OF OPERATIONS (Continued)
Fuel revenues and costs are allocated between retail and wholesale jurisdictions. Retail fuel cost recovery revenues decreased in the first quarter 2023 when compared to the corresponding period in 2022 due to lower fuel and purchased power costs. Electric rates include provisions to adjust billings for fluctuations in fuel costs, including the energy component of purchased power costs. Under these fuel cost recovery provisions, fuel revenues generally equal fuel expenses and do not affect net income. See Note (B) to the Condensed Financial Statements herein and Note 2 to the financial statements in Item 8 of the Form 10-K under "Georgia Power – Fuel Cost Recovery" for additional information.
Wholesale Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(35)(53.0)
In the first quarter 2023, wholesale revenues were $31 million compared to $66 million for the corresponding period in 2022. The decrease was primarily due to a $23 million decrease in KWH sales associated with lower market demand and a $5 million decrease related to the average cost per KWH sold due to lower Southern Company system fuel and purchased power costs.
Wholesale revenues from sales to non-affiliates consist of PPAs and short-term opportunity sales. Wholesale revenues from PPAs have both capacity and energy components. Wholesale capacity revenues from PPAs are recognized in amounts billable under the contract terms and provide for recovery of fixed costs and a return on investment. Wholesale revenues from sales to non-affiliates will vary depending on fuel prices, the market prices of wholesale energy compared to the cost of Georgia Power's and the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation. Increases and decreases in energy revenues that are driven by fuel prices are accompanied by an increase or decrease in fuel costs and do not have a significant impact on net income. Short-term opportunity sales are made at market-based rates that generally provide a margin above Georgia Power's variable cost of energy.
Wholesale revenues from sales to affiliated companies will vary depending on demand and the availability and cost of generating resources at each company. These affiliate sales are made in accordance with the IIC, as approved by the FERC. Energy revenues related to these transactions do not have a significant impact on earnings since this energy is generally sold at marginal cost.
Other Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$3931.2
In the first quarter 2023, other revenues were $164 million compared to $125 million for the corresponding period in 2022. The increase was primarily due to increases of $34 million in unregulated sales associated with power delivery construction and maintenance, outdoor lighting, and energy conservation projects.
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AND RESULTS OF OPERATIONS (Continued)
Fuel and Purchased Power Expenses
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Fuel$(17)(4.1)
Purchased power – non-affiliates(27)(18.0)
Purchased power – affiliates— — 
Total fuel and purchased power expenses$(44)
In the first quarter 2023, total fuel and purchased power expenses were $731 million compared to $775 million for the corresponding period in 2022. The decrease was due to a decrease of $55 million related to the volume of KWHs generated and purchased, partially offset by a net increase of $11 million related to the average cost of fuel and purchased power.
Fuel and purchased power energy transactions do not have a significant impact on earnings since these fuel expenses are generally offset by fuel revenues through Georgia Power's fuel cost recovery mechanism. See Note (B) to the Condensed Financial Statements herein and Note 2 to the financial statements in Item 8 of the Form 10-K under "Georgia Power – Fuel Cost Recovery" for additional information.
Details of Georgia Power's generation and purchased power were as follows:
First Quarter 2023First Quarter 2022
Total generation (in billions of KWHs)
1315
Total purchased power (in billions of KWHs)
88
Sources of generation (percent) —
Gas5546
Nuclear2624
Coal1425
Hydro and other55
Cost of fuel, generated (in cents per net KWH) 
Gas3.573.58
Nuclear0.750.77
Coal5.243.41
Average cost of fuel, generated (in cents per net KWH)
3.052.83
Average cost of purchased power (in cents per net KWH)(*)
4.524.81
(*)Average cost of purchased power includes fuel purchased by Georgia Power for tolling agreements where power is generated by the provider.
Fuel
In the first quarter 2023, fuel expense was $402 million compared to $419 million for the corresponding period in 2022. The decrease was primarily due to a 48.4% decrease in the volume of KWHs generated by coal, partially offset by increases of 53.7% in the average cost per KWH generated by coal and 6.4% in the volume of KWHs generated by natural gas.
Purchased Power – Non-Affiliates
In the first quarter 2023, purchased power expense from non-affiliates was $123 million compared to $150 million for the corresponding period in 2022. The decrease was primarily due to a 33.3% decrease in the volume of KWHs
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AND RESULTS OF OPERATIONS (Continued)
purchased as Georgia Power and other Southern Company system units generally dispatched at a lower cost than available market resources, partially offset by a 23.6% increase in the average cost per KWH purchased primarily due to higher coal prices.
Energy purchases from non-affiliates will vary depending on the market prices of wholesale energy as compared to the cost of the Southern Company system's generation, demand for energy within the Southern Company system's electric service territory, and the availability of the Southern Company system's generation.
Purchased Power – Affiliates
Purchased power expense from affiliates was $206 million in both the first quarter 2023 and 2022 and reflects a 14.3% increase in the volume of KWHs purchased, offset by a 14.1% decrease in the average cost per KWH purchased primarily due to higher coal prices.
Energy purchases from affiliates will vary depending on the demand and the availability and cost of generating resources at each company within the Southern Company system. These purchases are made in accordance with the IIC or other contractual agreements, all as approved by the FERC.
Other Operations and Maintenance Expenses
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(21)(4.1)
In the first quarter 2023, other operations and maintenance expenses were $496 million compared to $517 million for the corresponding period in 2022. The decrease was primarily due to decreases of $45 million in storm damage recovery as authorized in the 2022 ARP, $25 million in distribution and transmission expenses primarily associated with line maintenance, and $14 million in generation expenses primarily due to non-outage maintenance partially offset by scheduled generation outages. These decreases were partially offset by increases of $24 million in technology infrastructure and application production costs and $20 million from unregulated power delivery construction and maintenance and energy conservation projects, as well as a $12 million decrease in nuclear property insurance refunds. See Note 2 to the financial statements under "Georgia Power – Storm Damage Recovery" in Item 8 of the Form 10-K for additional information.
Depreciation and Amortization
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$5716.2
In the first quarter 2023, depreciation and amortization was $408 million compared to $351 million for the corresponding period in 2022. The increase was primarily due to increases of $47 million resulting from higher depreciation rates as authorized in the 2022 ARP and $14 million associated with additional plant in service. See Note 5 to the financial statements under "Depreciation and Amortization" in Item 8 of the Form 10-K for additional information.
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Allowance for Equity Funds Used During Construction
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$825.0
In the first quarter 2023, allowance for equity funds used during construction was $40 million compared to $32 million for the corresponding period in 2022. The increase was primarily due to an increase in capital expenditures subject to AFUDC.
Interest Expense, Net of Amounts Capitalized
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$3936.4
In the first quarter 2023, interest expense, net of amounts capitalized was $146 million compared to $107 million for the corresponding period in 2022. The increase was primarily associated with increases of approximately $21 million related to higher average outstanding borrowings and $19 million related to higher interest rates. See FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" and "Financing Activities" herein for additional information on borrowings.
Income Taxes
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$2376.7
In the first quarter 2023, income taxes were $53 million compared to $30 million for the corresponding period in 2022. The increase was primarily due to the flowback of certain excess deferred income taxes that ended in 2022, partially offset by lower pre-tax earnings. See Note (G) to the Condensed Financial Statements herein for additional information.
Mississippi Power
Net Income
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1638.1
Mississippi Power's net income in the first quarter 2023 was $58 million compared to $42 million for the corresponding period in 2022. The increase was primarily due to an increase in affiliate wholesale capacity revenues, partially offset by an increase in non-fuel operations and maintenance expenses.
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Retail Revenues
In the first quarter 2023, retail revenues were $236 million compared to $217 million for the corresponding period in 2022. Details of the changes in retail revenues were as follows:
 
First Quarter 2023 vs.
First Quarter 2022
 (change in millions)(% change)
Rates and pricing$1.8 %
Sales growth1.0 
Weather(6)(2.8)
Fuel and other cost recovery19 8.8 
Retail revenues$19 8.8 %
Revenues associated with changes in rates and pricing increased in the first quarter 2023 when compared to the corresponding period in 2022 primarily due to new PEP rates that became effective for the first billing cycle of April 2022 and ECO Plan rates that became effective for the first billing cycle of May 2022. See Note 2 to the financial statements under "Mississippi Power – Performance Evaluation Plan" and " – Environmental Compliance Overview Plan" in Item 8 of the Form 10-K for additional information.
Revenues attributable to changes in sales increased in the first quarter 2023 when compared to the corresponding period in 2022. Weather-adjusted residential KWH sales decreased 2.1% in the first quarter 2023 when compared to the corresponding period in 2022 due to a decrease in customer usage. Weather-adjusted commercial KWH sales increased 3.2% in the first quarter 2023 when compared to the corresponding period in 2022 due to an increase in customer usage. Industrial KWH sales increased 5.5% in the first quarter 2023 when compared to the corresponding period in 2022 primarily due to increases in the non-manufacturing, petroleum, and pipeline sectors, partially offset by decreases in the chemicals sector.
Fuel and other cost recovery revenues increased in the first quarter 2023 when compared to the corresponding period in 2022 primarily as a result of higher recoverable fuel costs. Recoverable fuel costs include fuel and purchased power expenses reduced by the fuel portion of wholesale revenues from energy sold to customers outside Mississippi Power's service territory. Electric rates include provisions to adjust billings for fluctuations in fuel costs, including the energy component of purchased power costs. Under these provisions, fuel revenues generally equal fuel expenses, including the energy component of purchased power costs, and do not affect net income. See Note 2 to the financial statements in Item 8 of the Form 10-K for additional information.
Wholesale Revenues – Affiliates
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$3378.6
In the first quarter 2023, wholesale revenues from sales to affiliates were $75 million compared to $42 million for the corresponding period in 2022. The increase was due to a $29 million increase in capacity revenues resulting from an increase in pricing and volume of generation reserves and a $17 million increase associated with higher KWH sales, partially offset by a $13 million decrease associated with lower natural gas prices.
Wholesale revenues from sales to affiliated companies will vary depending on demand and the availability and cost of generating resources at each company. These affiliate sales are made in accordance with the IIC, as approved by the FERC. Energy revenues related to these transactions do not have a significant impact on earnings since this energy is generally sold at marginal cost.
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Other Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$337.5
In the first quarter 2023, other revenues were $11 million compared to $8 million for the corresponding period in 2022. The increase was due to an increase in unregulated sales associated with power delivery construction and maintenance projects.
Fuel and Purchased Power Expenses
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Fuel$21 16.7
Purchased power(2)(31.0)
Total fuel and purchased power expenses$19 
In the first quarter 2023, total fuel and purchased power expenses were $151 million compared to $132 million for the corresponding period in 2022. The increase was due to a $12 million increase related to the volume of KWHs generated and a $7 million increase related to the average cost of fuel and purchased power.
Fuel and purchased power energy transactions do not have a significant impact on earnings since energy expenses are generally offset by energy revenues through Mississippi Power's fuel cost recovery clause.
Details of Mississippi Power's generation and purchased power were as follows:
First Quarter 2023First Quarter 2022
Total generation (in millions of KWHs)
4,4434,074
Total purchased power (in millions of KWHs)
100120
Sources of generation (percent) –
Gas9492
Coal68
Cost of fuel, generated (in cents per net KWH) 
Gas3.343.30
Coal5.783.74
Average cost of fuel, generated (in cents per net KWH)
3.513.34
Average cost of purchased power (in cents per net KWH)
4.104.54
Fuel
In the first quarter 2023, fuel expense was $147 million compared to $126 million for the corresponding period in 2022. The increase was due to a 13.6% increase in the volume of KWHs generated by natural gas, a 1.2% increase in the average cost of natural gas per KWH generated, and a 54.5% increase in the average cost of coal per KWH generated, partially offset by a 17.3% decrease in the volume of KWHs generated by coal.
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Other Operations and Maintenance Expenses
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$67.9
In the first quarter 2023, other operations and maintenance expenses were $82 million compared to $76 million for the corresponding period in 2022. The increase was primarily due to increases of $2 million in technology infrastructure and application production costs and $2 million in unregulated power delivery construction and maintenance projects.
Income Taxes
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$562.5
In the first quarter 2023, income taxes were $13 million compared to $8 million for the corresponding period in 2022. The increase was primarily due to higher pre-tax earnings.
Southern Power
Net Income Attributable to Southern Power
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$3041.7
Net income attributable to Southern Power in the first quarter 2023 was $102 million compared to $72 million for the corresponding period in 2022. The increase was primarily due to a gain on the sale of spare parts and higher income associated with tax equity partnerships.
Operating Revenues
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(31)(5.8)
Total operating revenues include PPA capacity revenues, which are derived primarily from long-term contracts involving natural gas facilities, and PPA energy revenues from Southern Power's generation facilities. To the extent Southern Power has capacity not contracted under a PPA, it may sell power into an accessible wholesale market, or, to the extent those generation assets are part of the FERC-approved IIC, it may sell power into the Southern Company power pool.
Natural Gas Capacity and Energy Revenue
Capacity revenues generally represent the greatest contribution to operating income and are designed to provide recovery of fixed costs plus a return on investment.
Energy is generally sold at variable cost or is indexed to published natural gas indices. Energy revenues will vary depending on the energy demand of Southern Power's customers and their generation capacity, as well as the market prices of wholesale energy compared to the cost of Southern Power's energy. Energy revenues also include fees for support services, fuel storage, and unit start charges. Increases and decreases in energy revenues under PPAs that
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are driven by fuel or purchased power prices are accompanied by an increase or decrease in fuel and purchased power costs and do not have a significant impact on net income.
Solar and Wind Energy Revenue
Southern Power's energy sales from solar and wind generating facilities are predominantly through long-term PPAs that do not have capacity revenue. Customers either purchase the energy output of a dedicated renewable facility through an energy charge or pay a fixed price related to the energy generated from the respective facility and sold to the grid. As a result, Southern Power's ability to recover fixed and variable operations and maintenance expenses is dependent upon the level of energy generated from these facilities, which can be impacted by weather conditions, equipment performance, transmission constraints, and other factors.
See FUTURE EARNINGS POTENTIAL – "Southern Power's Power Sales Agreements" in Item 7 of the Form 10-K for additional information regarding Southern Power's PPAs.
Operating Revenues Details
Details of Southern Power's operating revenues were as follows:
First Quarter 2023First Quarter 2022
(in millions)
PPA capacity revenues$112 $102 
PPA energy revenues277 345 
Total PPA revenues389 447 
Non-PPA revenues108 84 
Other revenues11 
Total operating revenues$508 $539 
In the first quarter 2023, total operating revenues were $508 million, reflecting a $31 million, or 5.8%, decrease from the corresponding period in 2022. The decrease in operating revenues was primarily due to the following:
PPA capacity revenues increased $10 million, or 9.8%, primarily due to a net increase in MW capacity under contract from natural gas PPAs and an increase associated with a change in rates from natural gas PPAs.
PPA energy revenues decreased $68 million, or 19.7%, primarily due to a $38 million decrease in sales under existing natural gas PPAs resulting from a $43 million decrease in the price of fuel and purchased power, partially offset by a $5 million increase in the volume of KWHs sold. Also contributing to the decrease was a $21 million decrease in sales associated with expired natural gas PPAs, net of new natural gas PPAs.
Non-PPA revenues increased $24 million, or 28.6%, due to a $58 million increase in the volume of KWHs sold through short-term sales, largely offset by a $34 million decrease in the market price of energy.
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Fuel and Purchased Power Expenses
Details of Southern Power's generation and purchased power were as follows:
 First Quarter 2023First Quarter 2022
(in billions of KWHs)
Generation12.311.0
Purchased power0.70.5
Total generation and purchased power13.011.5
Total generation and purchased power
(excluding solar, wind, fuel cells, and tolling agreements)
8.46.9
Southern Power's PPAs for natural gas generation generally provide that the purchasers are responsible for either procuring the fuel (tolling agreements) or reimbursing Southern Power for substantially all of the cost of fuel relating to the energy delivered under such PPAs. Consequently, changes in such fuel costs are generally accompanied by a corresponding change in related fuel revenues and do not have a significant impact on net income. Southern Power is responsible for the cost of fuel for generating units that are not covered under PPAs. Power from these generating units is sold into the wholesale market or into the Southern Company power pool for capacity owned directly by Southern Power.
Purchased power expenses will vary depending on demand, availability, and the cost of generating resources throughout the Southern Company system and other contract resources. Load requirements are submitted to the Southern Company power pool on an hourly basis and are fulfilled with the lowest cost alternative, whether that is generation owned by Southern Power, an affiliate company, or external parties. Such purchased power costs are generally recovered through PPA revenues.
Details of Southern Power's fuel and purchased power expenses were as follows:
 
First Quarter 2023 vs.
First Quarter 2022
 (change in millions)(% change)
Fuel$(41)(17.7)
Purchased power23.8
Total fuel and purchased power expenses$(36)
In the first quarter 2023, total fuel and purchased power expenses decreased $36 million, or 14.2%, compared to the corresponding period in 2022. Fuel expense decreased $41 million due to an $84 million decrease associated with the average cost of fuel, partially offset by a $43 million increase associated with the volume of KWHs generated. Purchased power expense increased $5 million due to an $11 million increase associated with the volume of KWHs purchased, largely offset by a $7 million decrease associated with the average cost of purchased power.
Depreciation and Amortization
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$86.7
In the first quarter 2023, depreciation and amortization was $128 million compared to $120 million for the corresponding period in 2022. The increase was primarily due to capital improvements at natural gas generating facilities.
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Gain on Dispositions, Net
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$18N/M
In the first quarter 2023, gain on dispositions, net was $20 million compared to $2 million for the corresponding period in 2022. The increase was primarily due to a $16 million gain on the sale of spare parts in 2023.
Interest Expense, Net of Amounts Capitalized
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(4)(10.8)
In the first quarter 2023, interest expense, net of amounts capitalized was $33 million compared to $37 million for the corresponding period in 2022. The decrease was primarily due to lower average outstanding borrowings.
Income Taxes (Benefit)
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$541.7
In the first quarter 2023, income tax benefit was $7 million compared to $12 million for the corresponding period in 2022. The change was primarily due to higher pre-tax earnings in 2023. See Note (G) to the Condensed Financial Statements herein for additional information.
Net Loss Attributable to Noncontrolling Interests
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(18)(40.0)
In the first quarter 2023, net loss attributable to noncontrolling interests was $63 million compared to $45 million for the corresponding period in 2022. The increased loss was primarily due to $16 million in higher HLBV loss allocations to wind tax equity partners due to higher wind PTCs in 2023.
Southern Company Gas
Operating Metrics
Southern Company Gas continues to focus on several operating metrics, including Heating Degree Days, customer count, and volumes of natural gas sold.
Southern Company Gas measures weather and the effect on its business using Heating Degree Days. Generally, increased Heating Degree Days result in higher demand for natural gas on Southern Company Gas' distribution system. Southern Company Gas has various regulatory mechanisms, such as weather and revenue normalization and straight-fixed-variable rate design, which limit its exposure to weather changes within typical ranges in each of its utility's respective service territory. Southern Company Gas also utilizes weather hedges to limit the negative income impacts in the event of warmer-than-normal weather.
The number of customers served by gas distribution operations and gas marketing services can be impacted by natural gas prices, economic conditions, and competition from alternative fuels. Gas distribution operations and gas marketing services' customers are primarily located in Georgia and Illinois.
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Southern Company Gas' natural gas volume metrics for gas distribution operations and gas marketing services illustrate the effects of weather and customer demand for natural gas.
Seasonality of Results
During the Heating Season, natural gas usage and operating revenues are generally higher as more customers are connected to the gas distribution systems and natural gas usage is higher in periods of colder weather. Southern Company Gas' base operating expenses, excluding cost of natural gas, bad debt expense, and certain incentive compensation costs, are incurred relatively evenly throughout the year. Seasonality also affects the comparison of certain balance sheet items across quarters, including receivables, unbilled revenues, natural gas for sale, and notes payable. However, these items are comparable when reviewing Southern Company Gas' annual results. Thus, Southern Company Gas' operating results for the interim periods presented are not necessarily indicative of annual results and can vary significantly from quarter to quarter.
Net Income
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(10)(3.1)
In the first quarter 2023, net income was $309 million compared to $319 million for the corresponding period in 2022. The decrease was primarily due to a $16 million decrease at gas marketing services primarily related to hedge losses, partially offset by a $7 million increase at gas distribution operations primarily due to rate increases and continued investment in infrastructure replacement.
Natural Gas Revenues
In the first quarter 2023, natural gas revenues were $1.9 billion compared to $2.1 billion for the corresponding period in 2022. Details of the changes in natural gas revenues were as follows:
First Quarter 2023 vs.
First Quarter 2022
(change in millions)(% change)
Infrastructure replacement programs and rate changes$50 2.4 %
Gas costs and other cost recovery(199)(9.7)
Gas marketing services(21)(1.0)
Other(13)(0.6)
Natural gas revenues$(183)(8.9)%
Revenues from infrastructure replacement programs and rate changes increased in the first quarter 2023 compared to the corresponding period in 2022 primarily due to rate increases at the natural gas distribution utilities and continued investment in infrastructure replacement. See Note 2 to the financial statements under "Southern Company Gas – Rate Proceedings" in Item 8 of the Form 10-K for additional information.
Revenues from gas costs and other cost recovery decreased in the first quarter 2023 compared to the corresponding period in 2022 primarily due to lower natural gas cost recovery associated with the timing of natural gas purchases and the recovery of those costs from customers. See "Cost of Natural Gas" herein for additional information. Revenue impacts from weather and customer growth are described further below.
Revenues from gas marketing services decreased in the first quarter 2023 compared to the corresponding period in 2022 primarily due to lower natural gas prices and the timing of unrealized hedge losses, partially offset by higher variable price spreads in Georgia and Illinois and higher customer count in Georgia.
Southern Company Gas' natural gas distribution utilities have various regulatory mechanisms that limit their exposure to weather changes. Southern Company Gas also uses hedges for the majority of any remaining exposure
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to warmer-than-normal weather in Illinois for gas distribution operations and in Illinois and Georgia for gas marketing services; therefore, weather typically does not have a significant net income impact. The following table presents Heating Degree Days information for Illinois and Georgia, the primary locations where Southern Company Gas' operations are impacted by weather.
First Quarter2023 vs. normal2023 vs. 2022
Normal(*)
20232022warmerwarmer
(in thousands)
Illinois3,064 2,661 3,007 (13.2)%(11.5)%
Georgia1,329 908 1,251 (31.7)%(27.4)%
(*)Normal represents the 10-year average from January 1, 2013 through March 31, 2022 for Illinois at Chicago Midway International Airport and for Georgia at Atlanta Hartsfield-Jackson International Airport, based on information obtained from the National Oceanic and Atmospheric Administration, National Climatic Data Center.
The following table provides the number of customers served by Southern Company Gas at March 31, 2023 and 2022:
March 31,
202320222023 vs. 2022
(in thousands, except market share %)(% change)
Gas distribution operations4,375 4,358 0.4 %
Gas marketing services
Energy customers(*)
635 598 6.2 %
Market share of energy customers in Georgia29.8 %28.7 %
(*)Gas marketing services' customers are primarily located in Georgia and Illinois.
Southern Company Gas anticipates customer growth and uses a variety of targeted marketing programs to attract new customers and to retain existing customers.
Cost of Natural Gas
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$(197)(18.0)
Excluding Atlanta Gas Light, which does not sell natural gas to end-use customers, natural gas distribution rates include provisions to adjust billings for fluctuations in natural gas costs. Therefore, gas costs recovered through natural gas revenues generally equal the amount expensed in cost of natural gas and do not affect net income from gas distribution operations. Cost of natural gas at gas distribution operations represented 85% of the total cost of natural gas in the first quarter 2023. See MANAGEMENT'S DISCUSSION AND ANALYSIS – RESULTS OF OPERATIONS – "Southern Company Gas – Cost of Natural Gas" in Item 7 of the Form 10-K and "Natural Gas Revenues" herein for additional information.
In the first quarter 2023, cost of natural gas was $0.9 billion compared to $1.1 billion for the corresponding period in 2022. The decrease reflects lower gas cost recovery as a result of a 31% decrease in natural gas prices in the first quarter 2023 compared to the corresponding period in 2022.
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The following table details the volumes of natural gas sold during both periods presented.
First Quarter2023 vs. 2022
20232022
Gas distribution operations (mmBtu in millions)
Firm258 304 (15.1)%
Interruptible25 25 — 
Total283 329 (14.0)%
Gas marketing services (mmBtu in millions)
Firm:
Georgia13 16 (18.8)%
Illinois3 — 
Other5 25.0 
Interruptible large commercial and industrial4 — 
Total25 27 (7.4)%
Other Operations and Maintenance Expenses
Other operations and maintenance expenses were $305 million for both the first quarter 2023 and 2022 and reflect a $17 million increase in compensation and benefits, partially offset by a $12 million decrease in expenses passed through to customers primarily related to bad debt at gas distribution operations.
Interest Expense, Net of Amounts Capitalized
First Quarter 2023 vs. First Quarter 2022
(change in millions)(% change)
$1524.6
In the first quarter 2023, interest expense, net of amounts capitalized was $76 million compared to $61 million for the corresponding period in 2022. The increase primarily reflects higher interest rates and higher average outstanding debt. See FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" and "Financing Activities" herein for additional information on borrowings.
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Segment Information
Operating revenues, operating expenses, and net income for each segment are provided in the table below. See Note (K) to the Condensed Financial Statements under "Southern Company Gas" herein for additional information.
 20232022
 Operating RevenuesOperating ExpensesNet Income Operating RevenuesOperating ExpensesNet Income
(in millions)(in millions)
First Quarter
Gas distribution operations$1,618 $1,264 $221 $1,803 $1,475 $214 
Gas pipeline investments8 3 31 29 
Gas marketing services246 175 50 243 150 66 
All other12 9 7 16 21 10 
Intercompany eliminations(9)(5) (12)(12)— 
Consolidated$1,875 $1,446 $309 $2,058 $1,637 $319 
Gas Distribution Operations
Gas distribution operations is the largest component of Southern Company Gas' business and is subject to regulation and oversight by regulatory agencies in each of the states it serves. These agencies approve natural gas rates designed to provide Southern Company Gas with the opportunity to generate revenues to recover the cost of natural gas delivered to its customers and its fixed and variable costs, including depreciation, interest expense, operations and maintenance, taxes, and overhead costs, and to earn a reasonable return on its investments.
With the exception of Atlanta Gas Light, Southern Company Gas' second largest utility that operates in a deregulated natural gas market and has a straight-fixed-variable rate design that minimizes the variability of its revenues based on consumption, the earnings of the natural gas distribution utilities can be affected by customer consumption patterns that are a function of weather conditions, price levels for natural gas, and general economic conditions that may impact customers' ability to pay for natural gas consumed. Southern Company Gas has various regulatory and other mechanisms, such as weather and revenue normalization mechanisms and weather derivative instruments, that limit its exposure to changes in customer consumption, including weather changes within typical ranges in its natural gas distribution utilities' service territories. See Note 2 to the financial statements under "Southern Company Gas" in Item 8 of the Form 10-K for additional information.
In the first quarter 2023, net income increased $7 million, or 3.3%, when compared to the corresponding period in 2022, as described further below:
Operating revenues decreased $185 million primarily due to lower gas cost over recovery, partially offset by rate increases and continued investment in infrastructure replacement. Gas costs recovered through natural gas revenues generally equal the amount expensed in cost of natural gas.
Operating expenses decreased $211 million primarily due to a $218 million decrease in cost of natural gas as a result of lower gas prices and lower volumes sold compared to 2022, partially offset by higher depreciation resulting from additional assets placed in service and higher compensation and benefits. The decrease in operating expenses also includes lower costs passed through directly to customers, primarily related to bad debt expenses and revenue taxes.
Interest expense, net of amounts capitalized increased $13 million primarily due to higher interest rates and higher average outstanding debt.
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Gas Pipeline Investments
Gas pipeline investments consists primarily of joint ventures in natural gas pipeline investments including SNG and Dalton Pipeline. See Note (E) to the Condensed Financial Statements under "Southern Company Gas" herein for additional information.
In the first quarter 2023, net income increased $2 million primarily due to higher earnings at SNG resulting from higher revenues primarily due to increased demand, partially offset by higher interest expense, net of amounts capitalized.
Gas Marketing Services
Gas marketing services provides energy-related products and services to natural gas markets and participants in customer choice programs that were approved in various states to increase competition. These programs allow customers to choose their natural gas supplier while the local distribution utility continues to provide distribution and transportation services. Gas marketing services is weather sensitive and uses a variety of hedging strategies, such as weather derivative instruments and other risk management tools, to partially mitigate potential weather impacts.
In the first quarter 2023, net income decreased $16 million, or 24.2%, when compared to the corresponding period in 2022 primarily due to a $25 million increase in operating expenses primarily resulting from a $22 million increase in cost of natural gas due to the timing of unrealized hedge losses, partially offset by lower gas prices and lower volumes sold. Net income also reflects a decrease of $6 million in income taxes as a result of lower pre-tax earnings.
All Other
All other includes natural gas storage businesses, a renewable natural gas business, AGL Services Company, and Southern Company Gas Capital, as well as various corporate operating expenses that are not allocated to the reportable segments and interest income (expense) associated with affiliate financing arrangements. All other included a natural gas storage facility in Texas through its sale in November 2022. See Note 15 to the financial statements under "Southern Company Gas" in Item 8 of the Form 10-K for additional information, including the sale of a natural gas storage facility in California expected to be completed later in 2023.
In the first quarter 2023, net income decreased $3 million when compared to the corresponding period in 2022. The change was primarily related to an increase in income taxes, largely offset by a decrease in operating expenses primarily related to lower depreciation in 2023.
FUTURE EARNINGS POTENTIAL
Each Registrant's results of operations are not necessarily indicative of its future earnings potential. The level of the Registrants' future earnings depends on numerous factors that affect the opportunities, challenges, and risks of the Registrants' primary businesses of selling electricity and/or distributing natural gas, as described further herein.
For the traditional electric operating companies, these factors include the ability to maintain constructive regulatory environments that allow for the timely recovery of prudently-incurred costs during a time of increasing costs, including those related to projected long-term demand growth, stringent environmental standards, including CCR rules, safety, system reliability and resiliency, fuel, restoration following major storms, and capital expenditures, including constructing new electric generating plants and expanding and improving the transmission and distribution systems; continued customer growth; and the trends of higher inflation and reduced electricity usage per customer, especially in residential and commercial markets. For Georgia Power, other major factors are completing construction and start-up of Plant Vogtle Units 3 and 4, meeting the related cost and schedule projections, and completing the related cost recovery proceedings.
Earnings in the electricity business will also depend upon maintaining and growing sales, considering, among other things, the adoption and/or penetration rates of increasingly energy-efficient technologies and increasing volumes of electronic commerce transactions, which could contribute to a net reduction in customer usage.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
Global and U.S. economic conditions continue to be significantly affected by a series of demand and supply shocks that caused a global and national economic recession in 2020 and have been further impacted by the invasion of Ukraine and significant declines in labor force participation rates. The confluence of these disruptions has resulted in the highest levels of inflation globally in 40 years and driven a significant policy response by central banks across the global economy. The U.S. Federal Reserve has increased policy interest rates faster than any rate increase cycle in the last 40 years and to levels high enough to slow economic activity. These actions and impacts, including increased costs for goods and services and borrowing costs, have led to a slowing of some economic activity and a significantly increased risk of recession. Recent challenges facing small and midsize banks may tighten lending standards, cause uncertainty in the banking sector, and further reduce economic growth. Additionally, inflation remains elevated in part due to continued supply chain and labor market constraints. Electricity sales across all classes have recovered to pre-COVID-19 pandemic levels and customer growth at both the traditional electric operating companies and natural gas distribution utilities has remained strong. However, weakening economic activity increases the risk of slowing to declining energy sales. Additionally, the current economic environment has increased the uncertainty of future energy demand and operating costs. See RESULTS OF OPERATIONS herein for information on energy sales in the Southern Company system's service territory during the first three months of 2023.
The level of future earnings for Southern Power's competitive wholesale electric business depends on numerous factors including the parameters of the wholesale market and the efficient operation of its wholesale generating assets; Southern Power's ability to execute its growth strategy through the development or acquisition of renewable facilities and other energy projects while containing costs; regulatory matters; customer creditworthiness; total electric generating capacity available in Southern Power's market areas; Southern Power's ability to successfully remarket capacity as current contracts expire; renewable portfolio standards; continued availability of federal and state ITCs and PTCs, which could be impacted by future tax legislation; transmission constraints; cost of generation from units within the Southern Company power pool; and operational limitations. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Income Tax Matters" in Item 7 of the Form 10-K for information regarding the Inflation Reduction Act's expansion of the availability of federal ITCs and PTCs.
The level of future earnings for Southern Company Gas' primary business of distributing natural gas and its complementary businesses in the gas pipeline investments and gas marketing services sectors depends on numerous factors. These factors include the natural gas distribution utilities' ability to maintain constructive regulatory environments that allow for the timely recovery of prudently-incurred costs, including those related to projected long-term demand growth, safety, system reliability and resiliency, natural gas, and capital expenditures, including expanding and improving the natural gas distribution systems; the completion and subsequent operation of ongoing infrastructure and other construction projects; customer creditworthiness; and certain policies to limit the use of natural gas, such as the potential across certain parts of the U.S. for state or municipal bans on the use of natural gas or policies designed to promote electrification. The volatility of natural gas prices has an impact on Southern Company Gas' customer rates, its long-term competitive position against other energy sources, and the ability of Southern Company Gas' gas marketing services business to capture value from locational and seasonal spreads. Additionally, changes in commodity prices, primarily driven by tight gas supplies, geopolitical events, and diminished gas production, subject a portion of Southern Company Gas' operations to earnings variability and may result in higher natural gas prices. Additional economic factors may contribute to this environment. The demand for natural gas may increase, which may cause natural gas prices to rise and drive higher volatility in the natural gas markets on a longer-term basis. Alternatively, a significant drop in oil and natural gas prices could lead to a consolidation of natural gas producers or reduced levels of natural gas production.
Earnings for both the electricity and natural gas businesses are subject to a variety of other factors. These factors include weather; competition; developing new and maintaining existing energy contracts and associated load requirements with wholesale customers; customer energy conservation practices; the use of alternative energy sources by customers; government incentives to reduce overall energy usage; fuel, labor, and material prices in an environment of heightened inflation and material and labor supply chain disruptions; and the price elasticity of
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demand. Demand for electricity and natural gas in the Registrants' service territories is primarily driven by the pace of economic growth or decline that may be affected by changes in regional and global economic conditions, which may impact future earnings.
As part of its ongoing effort to adapt to changing market conditions, Southern Company continues to evaluate and consider a wide array of potential business strategies. These strategies may include business combinations, partnerships, and acquisitions involving other utility or non-utility businesses or properties, disposition of, or the sale of interests in, certain assets or businesses, internal restructuring, or some combination thereof. Furthermore, Southern Company may engage in new business ventures that arise from competitive and regulatory changes in the utility industry. Pursuit of any of the above strategies, or any combination thereof, may significantly affect the business operations, risks, and financial condition of Southern Company. In addition, Southern Power and Southern Company Gas regularly consider and evaluate joint development arrangements as well as acquisitions and dispositions of businesses and assets as part of their business strategies. See Note 15 to the financial statements in Item 8 of the Form 10-K for additional information.
For additional information relating to these issues, see RISK FACTORS in Item 1A and MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL in Item 7 of the Form 10-K.
Environmental Matters
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Environmental Matters" in Item 7 and Note 3 to the financial statements under "Environmental Remediation" in Item 8 of the Form 10-K, as well as Note (C) to the Condensed Financial Statements under "General Litigation Matters" and "Environmental Remediation" herein, for additional information.
Environmental Laws and Regulations
Air Quality
On February 13, 2023, the EPA published a final rule disapproving 19 state implementation plans (SIPs), including the States of Alabama and Mississippi, under the interstate transport (good neighbor) provisions of the Clean Air Act for the 2015 Ozone National Ambient Air Quality Standards (NAAQS). On March 14, 2023 and March 15, 2023, the State of Mississippi and Mississippi Power, respectively, challenged the EPA's disapproval of the Mississippi SIP in the U.S. Court of Appeals for the Fifth Circuit. On April 13, 2023 and April 14, 2023, the State of Alabama and Alabama Power, respectively, challenged the EPA's disapproval of the Alabama SIP in the U.S. Court of Appeals for the Eleventh Circuit. The ultimate impact of these cases cannot be determined at this time. As a result of the SIP disapprovals, on March 15, 2023, the EPA released the prepublication version of the 2015 Ozone NAAQS Good Neighbor federal implementation plan with initial compliance expected to begin in May 2023. The ultimate impact of the rule cannot be determined at this time; however, it will likely result in increased compliance costs for the traditional electric operating companies.
Water Quality
On March 29, 2023, the EPA published a proposed ELG Supplemental Rule revising certain effluent limits of the 2020 and 2015 ELG rules. The proposal imposes more stringent requirements for flue gas desulfurization wastewater, bottom ash transport water, and combustion residual leachate to be met no later than December 31, 2029. The EPA is also proposing that a limited number of facilities already achieving compliance with the 2020 ELG Reconsideration Rule be allowed to elect retirement or repowering by December 31, 2032 as opposed to meeting the new more stringent requirements. The proposal maintains the 2020 ELG Reconsideration Rule's permanent cessation of coal combustion subcategory allowing units to continue to operate until the end of 2028 without having to install additional technologies. A final rule is anticipated in 2024. The ultimate impact of this proposal cannot be determined at this time; however, it may result in significant compliance costs.
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Regulatory Matters
See Note 2 to the financial statements in Item 8 of the Form 10-K, OVERVIEW – "Recent Developments" herein, and Note (B) to the Condensed Financial Statements herein for a discussion of regulatory matters related to Alabama Power, Georgia Power, Mississippi Power, and Southern Company Gas, including items that could impact the applicable Registrants' future earnings, cash flows, and/or financial condition.
Construction Programs
The Subsidiary Registrants are engaged in continuous construction programs to accommodate existing and estimated future loads on their respective systems. The Southern Company system strategy continues to include developing and constructing new electric generating facilities, expanding and improving the electric transmission and electric and natural gas distribution systems, and undertaking projects to comply with environmental laws and regulations.
For the traditional electric operating companies, major generation construction projects are subject to state PSC approval in order to be included in retail rates. The largest construction project currently underway in the Southern Company system is Plant Vogtle Units 3 and 4. See Note (B) to the Condensed Financial Statements under "Georgia Power – Nuclear Construction" herein for additional information. Also see Note 2 to the financial statements in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein under "Alabama Power – Certificates of Convenience and Necessity" for information regarding Alabama Power's construction of Plant Barry Unit 8.
Southern Company Gas is engaged in various infrastructure improvement programs designed to update or expand the natural gas distribution systems of the natural gas distribution utilities to improve reliability and resiliency, reduce emissions, and meet operational flexibility and growth. The natural gas distribution utilities recover their investment and a return associated with these infrastructure programs through their regulated rates. See Note 2 to the financial statements in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein under "Southern Company Gas" for additional information on Southern Company Gas' construction program.
See FINANCIAL CONDITION AND LIQUIDITY – "Cash Requirements" herein for additional information regarding the Registrants' capital requirements for their construction programs.
Southern Power's Power Sales Agreements
See MANAGEMENT'S DISCUSSION AND ANALYSIS FUTURE EARNINGS POTENTIAL "Southern Power's Power Sales Agreements" in Item 7 of the Form 10-K for additional information.
At March 31, 2023, Southern Power's average investment coverage ratio for its generating assets, including those owned with various partners, based on the ratio of investment under contract to total investment using the respective facilities' net book value (or expected in-service value for facilities under construction) as the investment amount was 96% through 2027 and 90% through 2032, with an average remaining contract duration of approximately 12 years.
General Litigation and Other Matters
The Registrants are involved in various matters being litigated and/or regulatory and other matters that could affect future earnings, cash flows, and/or financial condition. The ultimate outcome of such pending or potential litigation against each Registrant and any subsidiaries or regulatory and other matters cannot be determined at this time; however, for current proceedings and/or matters not specifically reported herein or in Notes (B) and (C) to the Condensed Financial Statements herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings and/or matters would have a material effect on such Registrant's financial statements. See Notes (B) and (C) to the Condensed Financial Statements for a discussion of various contingencies, including matters being litigated, regulatory matters, and other matters which may affect future earnings potential.
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ACCOUNTING POLICIES
See MANAGEMENT'S DISCUSSION AND ANALYSIS – ACCOUNTING POLICIES in Item 7 of the Form 10-K for a complete discussion of the Registrants' critical accounting policies and estimates, as well as recently issued accounting standards.
The Registrants prepare their financial statements in accordance with GAAP. Significant accounting policies are described in the notes to the financial statements in Item 8 of the Form 10-K. In the application of these policies, certain estimates are made that may have a material impact on the Registrants' results of operations and related disclosures. Different assumptions and measurements could produce estimates that are significantly different from those recorded in the financial statements.
FINANCIAL CONDITION AND LIQUIDITY
Overview
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY "Overview" in Item 7 of the Form 10-K for additional information. The financial condition of each Registrant remained stable at March 31, 2023. The Registrants intend to continue to monitor their access to short-term and long-term capital markets as well as their bank credit arrangements to meet future capital and liquidity needs. See "Cash Requirements," "Sources of Capital," and "Financing Activities" herein for additional information.
At the end of the first quarter 2023, the market price of Southern Company's common stock was $69.58 per share (based on the closing price as reported on the NYSE) and the book value was $28.00 per share, representing a market-to-book ratio of 249%, compared to $71.41, $27.93, and 256%, respectively, at the end of 2022. Southern Company's common stock dividend for the first quarter 2023 was $0.68 per share compared to $0.66 per share in the first quarter 2022.
Cash Requirements
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Cash Requirements" in Item 7 of the Form 10-K for a description of the Registrants' significant cash requirements.
The Registrants' significant cash requirements include estimated capital expenditures associated with their construction programs and, for the traditional electric operating companies, operating cash flows related to fuel cost under recovery. The fuel cost under recovery balances are primarily the result of higher than forecasted prices for natural gas and purchased power. See Note (B) to the Condensed Financial Statements herein under "Georgia Power – Fuel Cost Recovery" for additional information.
The construction programs are subject to periodic review and revision, and actual construction costs may vary from these estimates because of numerous factors. These factors include: changes in business conditions; changes in load projections; changes in environmental laws and regulations; the outcome of any legal challenges to environmental rules; changes in electric generating plants, including unit retirements and replacements and adding or changing fuel sources at existing electric generating units, to meet regulatory requirements; changes in FERC rules and regulations; state regulatory agency approvals; changes in the expected environmental compliance program; changes in legislation and/or regulation; the cost, availability, and efficiency of construction labor, equipment, and materials; project scope and design changes; abnormal weather; delays in construction due to judicial or regulatory action; storm impacts; and the cost of capital. The continued impacts of the COVID-19 pandemic could also impair the ability to develop, construct, and operate facilities, as discussed further in Item 1A of the Form 10-K. In addition, there can be no assurance that costs related to capital expenditures and AROs will be fully recovered. Additionally, expenditures associated with Southern Power's planned acquisitions may vary due to market opportunities and the execution of its growth strategy. See Note 15 to the financial statements under "Southern Power" in Item 8 of the Form 10-K for additional information regarding Southern Power's plant acquisitions and construction projects.
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The construction program of Georgia Power includes Plant Vogtle Units 3 and 4, which includes components based on new technology that only within the last few years began initial operation in the global nuclear industry at this scale and which may be subject to additional revised cost estimates during construction. See Note 2 to the financial statements in Item 8 of the Form 10-K and Note (B) to the Condensed Financial Statements herein under "Georgia Power – Nuclear Construction" for information regarding Plant Vogtle Units 3 and 4 and additional factors that may impact construction expenditures.
Long-term debt maturities and the interest payable on long-term debt each represent a significant cash requirement for the Registrants. See "Financing Activities" herein for information on changes in the Registrants' long-term debt balances since December 31, 2022.
Sources of Capital
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Sources of Capital" in Item 7 of the Form 10-K for additional information. Southern Company intends to meet its future capital needs through operating cash flows, borrowings from financial institutions, and debt, hybrid, and/or equity issuances. Equity capital can be provided from any combination of Southern Company's stock plans, private placements, or public offerings.
The Subsidiary Registrants plan to obtain the funds to meet their future capital needs from sources similar to those they used in the past, which were primarily from operating cash flows, external securities issuances, borrowings from financial institutions, and equity contributions from Southern Company. Operating cash flows provide a substantial portion of the Registrants' cash needs. In addition, Southern Power plans to utilize tax equity partnership contributions (as discussed further herein). Georgia Power intends to continue utilizing short-term floating rate bank loans and commercial paper issuances to fund operating cash flows related to fuel cost under recovery.
The amount, type, and timing of any financings in 2023, as well as in subsequent years, will be contingent on investment opportunities and the Registrants' capital requirements and will depend upon prevailing market conditions, regulatory approvals (for certain of the Subsidiary Registrants), and other factors. See "Cash Requirements" and "Financing Activities" herein for additional information.
Southern Power utilizes tax equity partnerships as one of its financing sources, where the tax partner takes significantly all of the federal tax benefits. These tax equity partnerships are consolidated in Southern Power's financial statements and are accounted for using HLBV methodology to allocate partnership gains and losses. During the three months ended March 31, 2023, Southern Power obtained tax equity funding for existing tax equity partnerships totaling $21 million. See Note 1 to the financial statements under "General" in Item 8 of the Form 10-K for additional information.
By regulation, Nicor Gas is restricted, to the extent of its retained earnings balance, in the amount it can dividend or loan to affiliates and is not permitted to make money pool loans to affiliates. At March 31, 2023, the amount of subsidiary retained earnings restricted to dividend totaled $1.6 billion. This restriction did not impact Southern Company Gas' ability to meet its cash obligations, nor does management expect such restriction to materially impact Southern Company Gas' ability to meet its currently anticipated cash obligations.
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Certain Registrants' current liabilities frequently exceed their current assets because of long-term debt maturities and the periodic use of short-term debt as a funding source, as well as significant seasonal fluctuations in cash needs. The Registrants generally plan to refinance long-term debt as it matures. The following table shows the amount by which current liabilities exceeded current assets at March 31, 2023 for the applicable Registrants:
At March 31, 2023Southern CompanyGeorgia
Power
Mississippi PowerSouthern Company Gas
(in millions)
Current liabilities in excess of current assets$4,338 $2,820 $91 $355 
The Registrants believe the need for working capital can be adequately met by utilizing operating cash flows, as well as commercial paper, lines of credit, and short-term bank notes, as market conditions permit. In addition, under certain circumstances, the Subsidiary Registrants may utilize equity contributions and/or loans from Southern Company.
Bank Credit Arrangements
At March 31, 2023, the Registrants' unused committed credit arrangements with banks were as follows:
At March 31, 2023Southern
Company
parent
Alabama PowerGeorgia
Power
Mississippi Power
Southern
 Power(a)
Southern Company Gas(b)
SEGCOSouthern
Company
(in millions)
Unused committed credit$1,998 $1,250 $1,726 $225 $587 $1,748 $30 $7,564 
(a)At March 31, 2023, Southern Power also had two continuing letters of credit facilities for standby letters of credit, of which $25 million was unused. Southern Power's subsidiaries are not parties to its bank credit arrangements or letter of credit facilities.
(b)Includes $798 million and $950 million at Southern Company Gas Capital and Nicor Gas, respectively.
Subject to applicable market conditions, the Registrants, Nicor Gas, and SEGCO expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, the Registrants, Nicor Gas, and SEGCO may extend the maturity dates and/or increase or decrease the lending commitments thereunder.
A portion of the unused credit with banks is allocated to provide liquidity support to the revenue bonds of the traditional electric operating companies and the commercial paper programs of the Registrants, Nicor Gas, and SEGCO. The amount of variable rate revenue bonds of the traditional electric operating companies outstanding requiring liquidity support at March 31, 2023 was approximately $1.7 billion (comprised of approximately $789 million at Alabama Power, $819 million at Georgia Power, and $69 million at Mississippi Power). In addition, at March 31, 2023, Alabama Power and Georgia Power had approximately $120 million and $285 million, respectively, of fixed rate revenue bonds outstanding that are required to be remarketed within the next 12 months.
See Note 8 to the financial statements in Item 8 of the Form 10-K and Note (F) to the Condensed Financial Statements herein under "Bank Credit Arrangements" for additional information.
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Short-term Borrowings
The Registrants, Nicor Gas, and SEGCO make short-term borrowings primarily through commercial paper programs that have the liquidity support of the committed bank credit arrangements described above. Southern Power's subsidiaries are not issuers or obligors under its commercial paper program. Commercial paper and short-term bank term loans are included in notes payable in the balance sheets. Details of the Registrants' short-term borrowings were as follows:
 
Short-term Debt at
March 31, 2023
Short-term Debt During the Period(*)
 Amount
Outstanding
Weighted
Average
Interest
Rate
Average
Amount
Outstanding
Weighted
Average
Interest
Rate
Maximum
Amount
Outstanding
 (in millions)(in millions)(in millions)
Southern Company$2,554 5.5 %$2,753 5.2 %$3,270 
Alabama Power170 5.1 83 4.8 230 
Georgia Power1,965 5.5 1,671 5.3 2,025 
Mississippi Power126 5.6 49 5.1 136 
Southern Power165 5.6 179 5.1 267 
Southern Company Gas:
Southern Company Gas Capital$120 5.6 %$215 4.9 %$297 
Nicor Gas— — 239 4.8 483 
Southern Company Gas Total$120 5.6 %$454 4.9 %
(*)Average and maximum amounts are based upon daily balances during the three-month period ended March 31, 2023.
Analysis of Cash Flows
Net cash flows provided from (used for) operating, investing, and financing activities for the three months ended March 31, 2023 and 2022 are presented in the following table:
Net cash provided from
(used for):
Southern CompanyAlabama PowerGeorgia
Power
Mississippi PowerSouthern PowerSouthern Company Gas
(in millions)
Three Months Ended
March 31, 2023
Operating activities$844 $30 $(53)$(3)$135 $978 
Investing activities(2,118)(509)(1,117)(117)(379)
Financing activities454 219 850 79 (146)(593)
Three Months Ended
March 31, 2022
Operating activities$1,592 $154 $361 $(16)$117 $1,024 
Investing activities(1,555)(365)(809)(68)(37)(271)
Financing activities(193)504 441 32 (76)(768)
Fluctuations in cash flows from financing activities vary from year to year based on capital needs and the maturity or redemption of securities.
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Southern Company
Net cash provided from operating activities decreased $0.7 billion for the three months ended March 31, 2023 as compared to the corresponding period in 2022 primarily due to the timing of vendor payments and the timing of fossil fuel stock purchases, partially offset by increased fuel cost recovery and the timing of customer receivable collections.
The net cash used for investing activities for the three months ended March 31, 2023 was primarily related to the Subsidiary Registrants' construction programs.
The net cash provided from financing activities for the three months ended March 31, 2023 was primarily related to net issuances of long-term debt, partially offset by common stock dividend payments.
Alabama Power
Net cash provided from operating activities decreased $124 million for the three months ended March 31, 2023 as compared to the corresponding period in 2022 primarily due to the timing of vendor payments and fuel stock purchases, partially offset by increased fuel cost recovery.
The net cash used for investing activities for the three months ended March 31, 2023 was primarily related to gross property additions, including approximately $23 million related to the construction of Plant Barry Unit 8. See Note (B) to the Condensed Financial Statements under "Alabama Power" herein for additional information.
The net cash provided from financing activities for the three months ended March 31, 2023 was primarily related to capital contributions from Southern Company and an increase in short-term borrowings, partially offset by common stock dividend payments.
Georgia Power
Net cash used for operating activities increased $414 million for the three months ended March 31, 2023 as compared to the corresponding period in 2022 primarily due to the timing of vendor payments, higher payments for property taxes and municipal franchise fees, and the timing of fossil fuel stock purchases, partially offset by the timing of customer receivable collections.
The net cash used for investing activities for the three months ended March 31, 2023 was primarily related to gross property additions, including a total of approximately $225 million related to the construction of Plant Vogtle Units 3 and 4. See Note (B) to the Condensed Financial Statements under "Georgia Power – Nuclear Construction" herein for additional information on construction of Plant Vogtle Units 3 and 4.
The net cash provided from financing activities for the three months ended March 31, 2023 was primarily related to capital contributions from Southern Company, a net increase in short-term borrowings, and reofferings of pollution control revenue bonds, partially offset by common stock dividend payments.
Mississippi Power
Net cash used for operating activities decreased $13 million for the three months ended March 31, 2023 as compared to the corresponding period in 2022 primarily due to the timing of customer receivable collections, partially offset by the timing of vendor payments.
The net cash used for investing activities for the three months ended March 31, 2023 was primarily related to gross property additions.
The net cash provided from financing activities for the three months ended March 31, 2023 was primarily related to an increase in short-term borrowings, partially offset by common stock dividend payments.
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Southern Power
Net cash provided from operating activities increased $18 million for the three months ended March 31, 2023 as compared to the corresponding period in 2022 primarily due to the timing of customer receivable collections, partially offset by the timing of vendor payments.
The net cash provided from investing activities for the three months ended March 31, 2023 was primarily related to the sale of equity method investments in wind and battery energy storage projects, partially offset by ongoing construction activities.
The net cash used for financing activities for the three months ended March 31, 2023 was primarily related to common stock dividend payments, net repayments of short-term debt, and net distributions to noncontrolling interests.
Southern Company Gas
Net cash provided from operating activities decreased $46 million for the three months ended March 31, 2023 as compared to the corresponding period in 2022 primarily due to lower gas cost recovery, timing of vendor payments, and a change in natural gas for sale, net of temporary LIFO liquidation due to use of stored natural gas, partially offset by the timing of customer receivable collections.
The net cash used for investing activities for the three months ended March 31, 2023 was primarily related to construction of transportation and distribution assets recovered through base rates and infrastructure investment recovered through replacement programs at gas distribution operations.
The net cash used for financing activities for the three months ended March 31, 2023 was primarily related to repayment of short-term debt and common stock dividend payments, partially offset by capital contributions from Southern Company.
Significant Balance Sheet Changes
Southern Company
Significant balance sheet changes for the three months ended March 31, 2023 included:
an increase of $1.5 billion in long-term debt (including securities due within one year) related to new issuances;
a decrease of $1.2 billion in accounts payable primarily related to the timing of vendor payments;
an increase of $1.1 billion in total property, plant, and equipment primarily related to the Subsidiary Registrants' construction programs;
a decrease of $0.9 billion in cash and cash equivalents, as discussed further under "Analysis of Cash Flows – Southern Company" herein;
a decrease of $0.5 billion in accrued compensation due to the timing of payments;
an increase of $0.5 billion in accumulated deferred income taxes primarily related to the expected utilization of ITCs in 2023, as well as an increase in property-related timing differences; and
a decrease of $0.4 billion in unbilled revenues primarily related to seasonality.
See "Financing Activities" herein and Notes (B), (F), and (G) to the Condensed Financial Statements herein for additional information.
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Alabama Power
Significant balance sheet changes for the three months ended March 31, 2023 included:
an increase of $300 million in common stockholder's equity primarily due to capital contributions from Southern Company, partially offset by dividends paid to Southern Company;
a decrease of $261 million in other accounts payable primarily due to the timing of vendor payments;
a decrease of $260 million in cash and cash equivalents, as discussed further under "Analysis of Cash Flows – Alabama Power" herein;
a decrease of $201 million in affiliated accounts payable due to the timing of payments to affiliates; and
an increase of $170 million in notes payable primarily due to an increase in commercial paper borrowings.
Georgia Power
Significant balance sheet changes for the three months ended March 31, 2023 included:
an increase of $861 million in total property, plant, and equipment primarily related to the construction of generation, transmission, and distribution facilities, including $270 million for Plant Vogtle Units 3 and 4;
an increase of $585 million in common stockholder's equity primarily due to capital contributions from Southern Company and net income, partially offset by dividends paid to Southern Company;
an increase of $365 million in notes payable primarily due to an increase in commercial paper;
a decrease of $364 million in cash and cash equivalents, as discussed further under "Analysis of Cash Flows – Georgia Power" herein;
a decrease of $322 million in affiliated accounts payable due to the timing of payments to affiliates;
a decrease of $286 million in accrued taxes primarily related to payments for municipal franchise fees and property taxes; and
an increase of $210 million in long-term debt (including securities due within one year) primarily due to reofferings of pollution control revenue bonds.
See "Financing Activities – Georgia Power" herein and Note (B) to the Condensed Financial Statements herein under "Georgia Power – Nuclear Construction" for additional information.
Mississippi Power
Significant balance sheet changes for the three months ended March 31, 2023 included:
an increase of $126 million in notes payable due to an increase in short-term borrowings;
a decrease of $62 million in accrued taxes primarily due to the payment of ad valorem taxes;
decreases of $56 million in affiliated receivables and $52 million in affiliated accounts payable primarily due to fluctuations in affiliate sales/purchases and the timing of payments;
an increase of $48 million in total property, plant, and equipment primarily related to the construction of transmission and distribution facilities; and
a decrease of $41 million in cash and cash equivalents, as discussed further under "Analysis of Cash Flows – Mississippi Power" herein.
See "Financing Activities – Mississippi Power" herein for additional information.
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Southern Power
Significant balance sheet changes for the three months ended March 31, 2023 included:
increases of $302 million in accumulated deferred income tax liabilities and $286 million in prepaid income taxes primarily related to the expected utilization of ITCs in 2023 and
a decrease of $120 million in total property, plant, and equipment primarily due to continued depreciation of assets.
See Note (G) to the Condensed Financial Statements herein for additional information.
Southern Company Gas
Significant balance sheet changes for the three months ended March 31, 2023 included:
a decrease of $648 million in notes payable due to repayments of short-term debt and commercial paper borrowings;
an increase of $356 million in common stockholder's equity related to net income and capital contributions from Southern Company, partially offset by dividends paid to Southern Company;
a decrease of $340 million in other accounts payable due to seasonality and the timing of vendor payments;
a decrease of $268 million in total accounts receivable primarily related to a decrease of $235 million in unbilled revenues as a result of seasonality;
a decrease of $222 million in natural gas for sale primarily due to the use of stored natural gas; and
an increase of $208 million in total property, plant, and equipment primarily related to the construction of transportation and distribution assets and additional infrastructure investment.
See "Financing Activities – Southern Company Gas" herein and Note (B) to the Condensed Financial Statements herein for additional information.
Financing Activities
The following table outlines the Registrants' long-term debt financing activities for the first three months of 2023:
Issuances/ReofferingsMaturities and Redemptions
CompanySenior
Notes
Revenue
Bonds
Other
Long-Term Debt
Other Long-
Term Debt(*)
(in millions)
Southern Company parent$1,725 $— $— $550 
Alabama Power— — 16 — 
Georgia Power— 229 — 22 
Southern Company Gas— — — 
Other— — — 
Southern Company$1,725 $229 $24 $575 
(*)Includes reductions in finance lease obligations resulting from cash payments under finance leases and, for Georgia Power, principal amortization payments totaling $21 million for FFB borrowings. See Note 8 to the financial statements under "Long-term Debt – DOE Loan Guarantee Borrowings" in Item 8 of the Form 10-K for additional information.
Except as otherwise described herein, the Registrants used the proceeds of debt issuances for their redemptions and maturities shown in the table above, to repay short-term indebtedness, and for general corporate purposes, including working capital. The Subsidiary Registrants also used the proceeds for their construction programs.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
In addition to any financings that may be necessary to meet capital requirements and contractual obligations, the Registrants plan to continue, when economically feasible, a program to retire higher-cost securities and replace these obligations with lower-cost capital if market conditions permit.
Southern Company
During the first three months of 2022, Southern Company issued approximately 1.6 million shares of common stock primarily through employee equity compensation plans and received proceeds of approximately $15 million.
In January 2023, Southern Company redeemed all $550 million aggregate principal amount of its Series 2016B Junior Subordinated Notes due March 15, 2057.
In February 2023, Southern Company issued $1.5 billion aggregate principal amount of its Series 2023A 3.875% Convertible Senior Notes due December 15, 2025 (Series 2023A Convertible Senior Notes) in a private offering. In March 2023, Southern Company issued an additional $225 million aggregate principal amount of the Series 2023A Convertible Senior Notes upon the exercise by the initial purchasers of their over-allotment option. See Note (F) to the Condensed Financial Statements under "Convertible Senior Notes" herein for additional information.
Alabama Power
During the first quarter 2023, a subsidiary of Alabama Power borrowed $16 million under a $39 million long-term floating rate bank loan entered into in December 2022 with a maturity date of December 12, 2029.
Georgia Power
In March 2023, Georgia Power reoffered to the public the following pollution control revenue bonds that previously had been purchased and were held by Georgia Power at December 31, 2022:
approximately $28 million aggregate principal amount of Development Authority of Monroe County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Scherer Project), Second Series 2006;
approximately $89 million aggregate principal amount of Development Authority of Monroe County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Scherer Project), Second Series 2009;
approximately $49 million aggregate principal amount of Development Authority of Monroe County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Scherer Project), First Series 2012;
approximately $18 million aggregate principal amount of Development Authority of Monroe County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Scherer Project), First Series 2013; and
$46 million aggregate principal amount of Development Authority of Burke County (Georgia) Pollution Control Revenue Bonds (Georgia Power Company Plant Vogtle Project), First Series 1996.
Also in March 2023, Georgia Power borrowed $100 million pursuant to a short-term uncommitted bank credit arrangement bearing interest at a mutually agreed upon rate and payable on demand. Subsequent to March 31, 2023, Georgia Power borrowed an additional $150 million under the arrangement.
Also in March 2023, Georgia Power repaid at maturity a $200 million short-term floating rate bank loan entered into in March 2022.
Subsequent to March 31, 2023, Georgia Power repaid at maturity $100 million aggregate principal amount of its Series N 5.750% Senior Notes.
Also subsequent to March 31, 2023, Georgia Power repaid at maturity a $200 million short-term floating rate bank loan entered into in April 2022.
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MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS (Continued)
Mississippi Power
In March 2023, Mississippi Power borrowed $50 million of short-term debt pursuant to its $125 million revolving credit arrangement bearing interest based on term SOFR.
Southern Power
In January 2023, Southern Power borrowed $100 million pursuant to a short-term uncommitted bank credit arrangement bearing interest at a mutually agreed upon rate and payable on demand.
Southern Company Gas
In February 2023, Nicor Gas repaid its $150 million and $50 million short-term floating rate bank loans entered into in February 2022 and March 2022, respectively.
Credit Rating Risk
At March 31, 2023, the Registrants did not have any credit arrangements that would require material changes in payment schedules or terminations as a result of a credit rating downgrade.
There are certain contracts that could require collateral, but not accelerated payment, in the event of a credit rating change of certain Registrants to BBB and/or Baa2 or below. These contracts are primarily for physical electricity and natural gas purchases and sales, fuel purchases, fuel transportation and storage, energy price risk management, transmission, interest rate management, and, for Georgia Power, construction of new generation at Plant Vogtle Units 3 and 4.
The maximum potential collateral requirements under these contracts at March 31, 2023 were as follows:
Credit Ratings
Southern Company(*)
Alabama PowerGeorgia PowerMississippi Power
Southern
Power(*)
Southern Company Gas
(in millions)
At BBB and/or Baa2$33 $$— $— $32 $— 
At BBB- and/or Baa3407 60 345 — 
At BB+ and/or Ba1 or below2,086 422 937 320 1,233 69 
(*)Southern Power has PPAs that could require collateral, but not accelerated payment, in the event of a downgrade of Southern Power's credit. The PPAs require credit assurances without stating a specific credit rating. The amount of collateral required would depend upon actual losses resulting from a credit downgrade. Southern Power had $106 million of cash collateral posted related to PPA requirements at March 31, 2023.
The amounts in the previous table for the traditional electric operating companies and Southern Power include certain agreements that could require collateral if either Alabama Power or Georgia Power has a credit rating change to below investment grade. Generally, collateral may be provided by a Southern Company guaranty, letter of credit, or cash. Additionally, a credit rating downgrade could impact the ability of the Registrants to access capital markets and would be likely to impact the cost at which they do so.
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Item 3. Quantitative and Qualitative Disclosures About Market Risk.
During the three months ended March 31, 2023, there were no material changes to Southern Company's, Alabama Power's, Georgia Power's, Mississippi Power's, Southern Power's, or Southern Company Gas' disclosures about market risk. For an in-depth discussion of each Registrant's market risks, see MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Market Price Risk" in Item 7 of the Form 10-K and Note 1 to the financial statements under "Financial Instruments" and Notes 13 and 14 to the financial statements in Item 8 of the Form 10-K, as well as Notes (I) and (J) to the Condensed Financial Statements herein.
Item 4. Controls and Procedures.
(a)Evaluation of disclosure controls and procedures.
As of the end of the period covered by this Quarterly Report on Form 10-Q, Southern Company, Alabama Power, Georgia Power, Mississippi Power, Southern Power, and Southern Company Gas conducted separate evaluations under the supervision and with the participation of each company's management, including the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures (as defined in Sections 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended). Based upon these evaluations, the Chief Executive Officer and the Chief Financial Officer, in each case, concluded that the disclosure controls and procedures are effective.
(b)    Changes in internal control over financial reporting.
There have been no changes in Southern Company's, Alabama Power's, Georgia Power's, Mississippi Power's, Southern Power's, or Southern Company Gas' internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended) during the first quarter 2023 that have materially affected or are reasonably likely to materially affect Southern Company's, Alabama Power's, Georgia Power's, Mississippi Power's, Southern Power's, or Southern Company Gas' internal control over financial reporting.
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PART II — OTHER INFORMATION
Item 1. Legal Proceedings.
See the Notes to the Condensed Financial Statements herein for information regarding certain legal and administrative proceedings in which the registrantsRegistrants are involved. The Registrants' threshold for disclosing material environmental legal proceedings involving a governmental authority where potential monetary sanctions are involved is $1 million.
Item 1A. Risk Factors.
See RISK FACTORS in Item 1A of the Form 10-K for a discussion of the risk factors of the registrants. Except as described below, thereRegistrants. There have been no material changes to these risk factors from those previously disclosed in the Form 10-K.
The bankruptcy filing of the EPC Contractor is expected to have a material impact on the construction cost and schedule of, as well as the cost recovery for, Plant Vogtle Units 3 and 4 and could have a material impact on the financial statements of Southern Company and Georgia Power, and any inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4, and therefore on the financial statements of Southern Company and Georgia Power.
See "Construction Risk" in Item 1A – Risk Factors of Southern Company and Georgia Power in the Form 10-K for a discussion of risks relating to major construction projects, including Plant Vogtle Units 3 and 4 and see Note (B) to the Condensed Financial Statements under "Regulatory Matters – Georgia Power – Nuclear Construction" herein and Note (E) to the Condensed Financial Statements under "DOE Loan Guarantee Borrowings" herein for additional information.
On March 29, 2017, the EPC Contractor filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. To provide for a continuation of work at Plant Vogtle Units 3 and 4, Georgia Power, acting for itself and as agent for the Vogtle Owners, entered into an interim assessment agreement with the EPC Contractor (Interim Assessment Agreement), which the bankruptcy court approved on March 30, 2017.
The Interim Assessment Agreement provided, among other items, that during the term of the Interim Assessment Agreement Georgia Power was obligated to pay, on behalf of the Vogtle Owners, all costs accrued by the EPC Contractor for subcontractors and vendors for services performed or goods provided. The Interim Assessment Agreement, as amended, expired on July 27, 2017.
Subsequent to the EPC Contractor bankruptcy filing, a number of subcontractors to the EPC Contractor, including Fluor Enterprises, Inc., a subsidiary of Fluor Corporation, alleged non-payment by the EPC Contractor for amounts owed for work performed on Plant Vogtle Units 3 and 4. Georgia Power, acting for itself and as agent for the Vogtle Owners, has taken, and continues to take, actions to remove liens filed by these subcontractors through the posting of surety bonds. Georgia Power estimates the aggregate liability, through September 30, 2017, of the Vogtle Owners for the removal of subcontractor liens and payment of other EPC Contractor pre-petition accounts payable to total approximately $386 million, of which $340 million had been paid or accrued as of September 30, 2017. Georgia Power's proportionate share of this aggregate liability totaled approximately $176 million.
The Vogtle 3 and 4 Agreement also provided for liquidated damages upon the EPC Contractor's failure to fulfill the schedule and certain performance guarantees, each subject to an aggregate cap of 10% of the contract price, or approximately $920 million (approximately $420 million based on Georgia Power's ownership interest). Under the Toshiba Guarantee, Toshiba guaranteed certain payment obligations of the EPC Contractor, including any liability of the EPC Contractor for abandonment of work. In January 2016, Westinghouse delivered to the Vogtle Owners $920 million of letters of credit from financial institutions (Westinghouse Letters of Credit) to secure a portion of the EPC Contractor's potential obligations under the Vogtle 3 and 4 Agreement. The Westinghouse Letters of Credit are subject to annual renewals through June 30, 2020 and require 60 days' written notice to Georgia Power in the event the Westinghouse Letters of Credit will not be renewed.
Under the terms of the Vogtle 3 and 4 Agreement, the EPC Contractor did not have the right to terminate the Vogtle 3 and 4 Agreement for convenience. In the event of an abandonment of work by the EPC Contractor, the maximum liability of the EPC Contractor under the Vogtle 3 and 4 Agreement was 40% of the contract price (approximately $1.7 billion based on Georgia Power's ownership interest).


On June 9, 2017, Georgia Power and the other Vogtle Owners and Toshiba entered into a settlement agreement regarding the Toshiba Guarantee (Guarantee Settlement Agreement). Pursuant to the Guarantee Settlement Agreement, Toshiba acknowledged the amount of its obligation under the Toshiba Guarantee is $3.68 billion (Guarantee Obligations), of which Georgia Power's proportionate share is approximately $1.7 billion, and that the Guarantee Obligations exist regardless of whether Plant Vogtle Units 3 and 4 are completed. The Guarantee Settlement Agreement also provides for a schedule of payments for the Guarantee Obligations, which will reduce CWIP, beginning in October 2017 and continuing through January 2021. In the event Toshiba receives certain payments, including sale proceeds, from or related to Westinghouse (or its subsidiaries) or Toshiba Nuclear Energy Holdings (UK) Limited (or its subsidiaries), it will hold a portion of such payments in trust for the Vogtle Owners and promptly pay them as offsets against any remaining Guarantee Obligations. Under the Guarantee Settlement Agreement, the Vogtle Owners will forbear from exercising certain remedies, including drawing on the Westinghouse Letters of Credit, until June 30, 2020, unless certain events of nonpayment, insolvency, or other material breach of the Guarantee Settlement Agreement by Toshiba occur. If such an event occurs, the balance of the Guarantee Obligations will become immediately due and payable, and the Vogtle Owners may exercise any and all rights and remedies, including drawing on the Westinghouse Letters of Credit without restriction. In addition, the Guarantee Settlement Agreement does not restrict the Vogtle Owners from fully drawing on the Westinghouse Letters of Credit in the event they are not renewed or replaced prior to the expiration date. On October 2, 2017, Georgia Power received the first installment of the Guarantee Obligations of $300 million from Toshiba, of which Georgia Power's proportionate share was $137 million. Georgia Power is considering potential options with respect to its right to future payments under the Guarantee Settlement Agreement and its claims against the EPC Contractor in the EPC Contractor's bankruptcy proceeding, including a potential sale of those payment rights and bankruptcy claims. Any such transaction cannot be assured and would be subject to DOE consents and related approvals under the Loan Guarantee Agreement and related agreements.
On August 10, 2017, Toshiba released its financial results for the quarter ended June 30, 2017, which reflected a negative shareholders' equity balance of approximately $4.5 billion as of June 30, 2017. Toshiba previously announced the existence of material events and conditions that raise substantial doubt about Toshiba's ability to continue as a going concern. As a result, substantial risk regarding the Vogtle Owners' ability to fully collect the Guarantee Obligations continues to exist. An inability or other failure by Toshiba to perform its obligations under the Guarantee Settlement Agreement could have a further material impact on the net cost to the Vogtle Owners to complete construction of Plant Vogtle Units 3 and 4 and, therefore, on Southern Company's and Georgia Power's financial statements.
Additionally, on June 9, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, and the EPC Contractor entered into a services agreement (Services Agreement), which was amended and restated on July 20, 2017, for the EPC Contractor to transition construction management of Plant Vogtle Units 3 and 4 to Southern Nuclear and to provide ongoing design, engineering, and procurement services to Southern Nuclear. On July 20, 2017, the bankruptcy court approved the EPC Contractor's motion seeking authorization to (i) enter into the Services Agreement, (ii) assume and assign to the Vogtle Owners certain project-related contracts, (iii) join the Vogtle Owners as counterparties to certain assumed project-related contracts, and (iv) reject the Vogtle 3 and 4 Agreement. The Services Agreement, and the EPC Contractor's rejection of the Vogtle 3 and 4 Agreement, became effective upon approval by the DOE on July 27, 2017. The Services Agreement will continue until the start-up and testing of Plant Vogtle Units 3 and 4 is complete and electricity is generated and sold from both units. The Services Agreement is terminable by the Vogtle Owners upon 30 days' written notice.
Effective October 23, 2017, Georgia Power, acting for itself and as agent for the other Vogtle Owners, entered into a construction completion agreement (Bechtel Agreement) with Bechtel Power Corporation (Bechtel), whereby Bechtel will serve as the primary contractor for the remaining construction activities for Plant Vogtle Units 3 and 4. Facility design and engineering remains the responsibility of the EPC Contractor under the Services Agreement. The Bechtel Agreement is a cost reimbursable plus fee arrangement, whereby Bechtel will be reimbursed for actual costs plus a fee and an at-risk fee, which is subject to adjustment based on Bechtel's performance against cost and schedule targets. Each Vogtle Owner is severally (not jointly) liable for its proportionate share, based on its


ownership interest, of all amounts owed to Bechtel under the Bechtel Agreement. The Vogtle Owners may terminate the Bechtel Agreement at any time for their convenience, provided that the Vogtle Owners will be required to pay amounts related to work performed prior to the termination (including the applicable portion of the base fee), certain termination-related costs, and, at certain stages of the work, the at-risk fee. Bechtel may terminate the Bechtel Agreement under certain circumstances, including certain Vogtle Owner suspensions of work, certain breaches of the Bechtel Agreement by the Vogtle Owners, Vogtle Owner insolvency, and certain other events. Pursuant to the Loan Guarantee Agreement, Georgia Power is required to obtain the DOE's approval of the Bechtel Agreement prior to obtaining any further advances under the Loan Guarantee Agreement.
In connection with the recommendation to continue with construction of Plant Vogtle Units 3 and 4 (described below), the Vogtle Owners agreed on a term sheet to amend the existing joint ownership agreements to provide for additional Vogtle Owner approval requirements. Under the term sheet, the holders of at least 90% of the ownership interests in Plant Vogtle Units 3 and 4 must vote to continue construction if certain adverse events occur, including (i) the bankruptcy of Toshiba or a material breach by Toshiba of the Guarantee Settlement Agreement; (ii) termination or rejection in bankruptcy of certain agreements, including the Services Agreement or the Bechtel Agreement; (iii) the Georgia PSC determines that any of Georgia Power's costs relating to the construction of Plant Vogtle Units 3 and 4 will not be recovered in retail rates because such costs are deemed unreasonable or imprudent; or (iv) an increase in the construction budget contained in the seventeenth Vogtle Construction Monitoring (VCM) report by more than $1 billion or extension of the project schedule contained in the seventeenth VCM report by more than one year. In addition, under the term sheet, the required approval of holders of ownership interests in Plant Vogtle Units 3 and 4 is at least (i) 90% for a change of the primary construction contractor and (ii) 67% for material amendments to the Services Agreement or agreements with the primary construction contractor or Southern Nuclear.
The term sheet also confirms that the Vogtle Owners' sole recourse against Georgia Power or Southern Nuclear for any action or inaction in connection with their performance as agent for the Vogtle Owners is limited to removal of Georgia Power and/or Southern Nuclear as agent, except in cases of willful misconduct.
In the seventeenth VCM report, Georgia Power recommended that construction of Plant Vogtle Units 3 and 4 be continued, with Southern Nuclear serving as project manager. Georgia Power believes that the most reasonable schedule for completing Plant Vogtle Units 3 and 4 is by November 2021 for Unit 3 and by November 2022 for Unit 4. Georgia Power's recommendation to go forward with completion of Vogtle Units 3 and 4 is based on the following assumptions about the regulatory treatment of this recommendation, if the recommendation to go forward is adopted by the Georgia PSC: (i) that pursuant to Georgia law, the Georgia PSC in the seventeenth VCM proceeding approves the new cost and schedule forecast and finds that it is a reasonable basis for going forward, and that if the Georgia PSC disapproves all or part of the proposed cost and schedule revisions, Georgia Power may cancel Plant Vogtle Units 3 and 4 and recover its actual investment in Plant Vogtle Units 3 and 4; (ii) that the Vogtle Cost Settlement Agreement remains in full force and effect, including Georgia Power retaining the burden of proving all capital costs above $5.680 billion were prudent; (iii) that while the Georgia PSC will make no prudence finding in the seventeenth VCM proceeding, nor will the certified amount be amended consistent with the Vogtle Cost Settlement Agreement, the Georgia PSC recognizes that the certified amount is not a cap, and all costs that are approved and presumed or shown to be prudently incurred will be recoverable by Georgia Power; (iv) that Georgia Power is not a guarantor of the Toshiba Guarantee, and the failure of Toshiba to pay the Toshiba Guarantee, the failure of the U.S. Congress to extend the PTCs for Plant Vogtle Units 3 and 4, or the failure of the DOE to extend the Loan Guarantee Agreement with Georgia Power to reflect the increased capital amounts, will not reduce the amount of investment Georgia Power is otherwise allowed to collect; and (v) that as conditions change and assumptions are either proven or disproven, Georgia Power and the Georgia PSC may reconsider the decision to go forward. The Georgia PSC is expected to make a decision on these matters by February 6, 2018.


Georgia Power's approximate proportionate share of the remaining estimated cost to complete Plant Vogtle Units 3 and 4 is as follows:
 (in billions)
Estimated cost to complete$4.2
CWIP as of September 30, 20174.6
Guarantee Obligations(1.7)
Estimated capital costs$7.1
Vogtle Cost Settlement Agreement Revised Forecast(5.7)
Estimated net additional capital costs$1.4
Georgia Power's estimated financing costs during the construction period total approximately $3.4 billion, of which approximately $1.5 billion had been incurred through September 30, 2017.
Georgia Power's cancellation cost estimate results indicate that its proportionate share of the estimated costs to cancel both units is approximately $350 million. As a result, as of September 30, 2017, total estimated costs subject to evaluation by Georgia Power and the Georgia PSC in the event of a cancellation decision are as follows:
 Cancellation Cost Estimate
 (in billions)
CWIP as of September 30, 2017$4.6
Financing costs collected, net of tax1.5
Cancellation costs(*)
0.4
Guarantee Obligations(1.7)
Estimated net cancellation cost$4.8
(*)The estimate for cancellation costs includes, but is not limited to, costs to terminate contracts for construction and other services, as well as costs to secure the Plant Vogtle Units 3 and 4 construction site.
The Guarantee Obligations continue to exist in the event of cancellation. In addition, under Georgia law, prudently incurred costs related to certificated projects cancelled by the Georgia PSC are allowed recovery, including carrying costs, in future retail rates. Georgia Power will continue working with the Georgia PSC and the other Vogtle Owners to determine future actions related to Plant Vogtle Units 3 and 4, including, but not limited to, the status of construction and rate recovery.
The ultimate outcome of these matters cannot be determined at this time.
Item 6. Exhibits.
The exhibits below with an asterisk (*) preceding the exhibit number are filed herewith. The remaining exhibits have previously been filed with the SEC and are incorporated herein by reference. The exhibits marked with a pound sign (#) are management contracts or compensatory plans or arrangements.
(3) Articles of Incorporation and By-Laws
Alabama Power
(b)1-

(4) Instruments Describing Rights of Security Holders, Including Indentures
Georgia PowerSouthern Company
(c)1(a)-
(c)2-
(c)3-
(10) Material Contracts
Mississippi Power
(e)1-
Southern Company Gas
(g)1-
(24) Power of Attorney and Resolutions
Southern Company
(a)-
Alabama Power
(b)1-
*(b)2-
Georgia Power
(c)1-
*(c)2-
GulfMississippi Power
(d)1-
*(d)2-
Mississippi Power
(e)
(e)-

Southern PowerCompany Gas
(f)1-
Southern Company Gas
(g)-
*(f)2-
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(31) Section 302 Certifications
Southern Company
*(a)1-
*(a)2-
Alabama Power
*(b)1-
*(b)2-
Georgia Power
*(c)1-
*(c)2-
GulfMississippi Power
*(d)1-
*(d)2-
Mississippi Power
*(e)1-
*(e)(d)2-
Southern Power
*(f)(e)1-
*(f)(e)2-

Southern Company Gas
*(g)(f)1-
*(g)(f)2-
(32) Section 906 Certifications
Southern Company
*(a)-
Alabama Power
*(b)-
Georgia Power
*(c)-
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GulfMississippi Power
*(d)-
Mississippi Power
*(e)-
Southern Power
*(f)(e)-
Southern Company Gas
*(g)(f)-
(101) Interactive Data Files
*INS-Inline XBRL Instance Document – The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.
*SCH-Inline XBRL Taxonomy Extension Schema Document
*CAL-Inline XBRL Taxonomy Calculation Linkbase Document
*DEF-Inline XBRL Definition Linkbase Document
*LAB-Inline XBRL Taxonomy Label Linkbase Document
*PRE-Inline XBRL Taxonomy Presentation Linkbase Document
(104) Cover Page Interactive Data File
*Formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101.

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THE SOUTHERN COMPANY
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
 
THE SOUTHERN COMPANY
ByTHE SOUTHERN COMPANY
ByThomas A. Fanning
Chairman President, and Chief Executive Officer
(Principal Executive Officer)
ByArt P. BeattieDaniel S. Tucker
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017April 26, 2023

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ALABAMA POWER COMPANY
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
 
ALABAMA POWER COMPANY
ByALABAMA POWER COMPANYJ. Jeffrey Peoples
ByMark A. Crosswhite
Chairman, President, and Chief Executive Officer
(Principal Executive Officer)
ByPhilip C. RaymondMoses H. Feagin
Executive Vice President, Chief Financial Officer, and Treasurer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017April 26, 2023

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GEORGIA POWER COMPANY
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
 
GEORGIA POWER COMPANY
ByGEORGIA POWER COMPANYKimberly S. Greene
ByW. Paul Bowers
Chairman, President, and Chief Executive Officer
(Principal Executive Officer)
ByXia LiuAaron P. Abramovitz
Executive Vice President, Chief Financial Officer, and Treasurer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017

GULF POWER COMPANY
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
ByGULF POWER COMPANY
ByS. W. Connally, Jr.
Chairman, President and Chief Executive Officer
(Principal Executive Officer)
ByRobin B. Boren
Vice President, Chief Financial Officer, and Treasurer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017April 26, 2023

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MISSISSIPPI POWER COMPANY
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
 
MISSISSIPPI POWER COMPANY
ByMISSISSIPPI POWER COMPANY
ByAnthony L. Wilson
Chairman, President, and Chief Executive Officer
(Principal Executive Officer)
ByMoses H. FeaginMatthew P. Grice
Vice President, Chief Financial Officer, and Treasurer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017April 26, 2023

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SOUTHERN POWER COMPANY
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
 
SOUTHERN POWER COMPANY
BySOUTHERN POWER COMPANYChristopher Cummiskey
ByJoseph A. Miller
Chairman President, and Chief Executive Officer
(Principal Executive Officer)
ByWilliam C. GranthamGary Kerr
Senior Vice President, Chief Financial Officer, and Treasurer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017April 26, 2023

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SOUTHERN COMPANY GAS
SIGNATURES
Pursuant to the requirements 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. The signature of the undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof included in such company's report.
 
SOUTHERN COMPANY GAS
BySOUTHERN COMPANY GASJames Y. Kerr II
ByAndrew W. Evans
Chairman, President, and Chief Executive Officer
(Principal Executive Officer)
ByElizabeth W. ReeseGrace A. Kolvereid
Executive Vice President, Chief Financial Officer, and Treasurer
(Principal Financial Officer)
By/s/ Melissa K. Caen
(Melissa K. Caen, Attorney-in-fact)
Date: October 31, 2017April 26, 2023



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