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

FORM 10-K

(Mark One)
 x
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 20142015
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 1-5924
TUCSON ELECTRIC POWER COMPANY
(Exact name of registrant as specified in its charter)
Arizona
(State or other jurisdiction of
incorporation or organization)
 
86-0062700
(I.R.S. Employer Identification No.)
88 East Broadway Boulevard, Tucson, AZ 85701
(Address of principal executive offices)(Zip Code)
Registrant's telephone number, including area code: (520) 571-4000
Securities registered pursuant to Section 12(b) of the Exchange Act: None
Securities registered pursuant to Section 12(g) of the Exchange Act:
Common Stock, without par value
(Title of Class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act of 1933.
Yes  ¨
 
No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 (Exchange Act).
Yes  ¨
 
No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
Yes  x
 
No  ¨





Indicate by check mark whether the registrant has submitted electronically and posted on its 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 registrant was required to submit and post such files).




Yes  x
 
No  ¨

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):
Large Accelerated Filer¨Accelerated Filer¨Non-accelerated FilerxSmaller Reporting Company¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes  ¨
 
 No  x

State the aggregate market value of the voting and non-voting common equity held by non-affiliates: None
As of 01/30/15,February 17, 2016, Tucson Electric Power Company had 32,139,434 shares of common stock, no par value, outstanding, all of which were held by UNS Energy Corporation.Corporation, an indirect wholly owned subsidiary of Fortis Inc.

Documents incorporated by reference: None



ii




Table of Contents
PART I 
  
  
PART II 
  
PART III

iii




PART III
  
  
PART IV 
  


iv




DEFINITIONS
The abbreviations and acronyms used in the 20142015 Form 10-K are defined below:
2010 Credit Agreement The 2010 Credit Agreement consistsconsisted of a $200 million revolving credit and LOCletter of credit facility together with an $82 million LOC facility to support tax-exempt bondsbonds; terminated in October 2015 when replaced by the 2015 Credit Agreement
2010 Reimbursement Agreement Reimbursement Agreement, dated December 14, 2010, between TEP, as borrower, and a financial institution
2013 Covenants Agreement A Lender Rate Mode Covenants Agreement between TEP and the purchaser of $100 million of unsecured tax-exempt bonds that were issued on behalf of TEP in November 2013 and sold in a private placement
2013 TEP Rate Order A rate order issued by the ACC resulting in a new rate structure for TEP, effective July 1, 2013
2014 Credit Agreement The 2014 Credit Agreement consistsconsisted of a $130 million term loan commitment and a $70 million revolving credit commitmentcommitment; terminated in June 2015
2015 Credit AgreementThe 2015 Credit Agreement provides for a $250 million revolving credit and letter of credit facility with a sublimit of $50 million; the credit agreement matures in 2020 and replaced the 2010 Credit Agreement
2015 TEP Rate CaseA pending general rate case filed with the ACC by TEP in November 2015 requesting new rates effective January 1, 2017
ACC Arizona Corporation Commission
APS Arizona Public Service Company
BART Best Available Retrofit Technology
Base O&MA non-GAAP financial measure that represents the fundamental level of operating and maintenance expense related to our business
Base Rates The portion of TEP’s Retail Rates attributed to generation, transmission, distribution, and customer costs. Base Rates exclude authorized charges designed to recover specific costs that are passed through to customers including fuel and purchased energypower costs, energy efficiency program costs, certain environmental compliance costs, and a portion of renewable energy costs
BtuBritish thermal unit(s)
Cooling Degree Days An index used to measure the impact of weather on energy usage calculated by subtracting 75 from the average of the high and low daily temperatures
DGDistributed Generation
DSM Demand Side Management
ECAEnvironmental Compliance Adjustor
EE Standards Energy Efficiency Standards
FERC Federal Energy Regulatory Commission
Fortis Fortis Inc., a corporation incorporated under the Corporations Act of Newfoundland and Labrador, Canada, whose principal executive offices are located at Fortis Place, Suite 1100, 5 Springdale Street, St. John's, NL A1E 0E4
Four Corners Four Corners Generating Station
GAAP Generally Accepted Accounting Principles in the United States
GBtu Billion British thermal units
GWh Gigawatt-hour(s)
Gila River Unit 3 Unit 3 of the Gila River Generating Station
Heating Degree Days An index used to measure the impact of weather on energy usage calculated by subtracting the average of the high and low daily temperatures from 65
kV Kilo-volt(s)
kWh Kilowatt-hour(s)
LFCR Lost Fixed Cost Recovery
LOC Letter of Credit
MergerThe acquisition of UNS Energy in 2014 pursuant to the Agreement and Plan of Merger between UNS Energy and FortisUS Inc.
MMBtuMillion British thermal units
MW Megawatt(s)
MWh Megawatt-hour(s)
Navajo Navajo Generating Station
PNM Public Service Company of New Mexico

v




PPA Power Purchase Agreement
PPFAC Purchased Power and Fuel Adjustment Clause
ppb Parts per billion

v




REC Renewable Energy Credit
Regional Haze RulesRules promulgated by the EPA to improve visibility at national parks and wilderness areas
RES Renewable Energy Standard
Retail Rates Rates designed to allow a regulated utility an opportunity to recover its reasonable operating and capital costs and earn a return on its utility plant in service
San Juan San Juan Generating Station
SCR Selective Catalytic Reduction
SJCC San Juan Coal Company
SNCR Selective Non-Catalytic Reduction
Springerville Springerville Generating Station
Springerville Coal Handling Facilities Coal handling facilities at Springerville used by all four Springerville units
Springerville Coal Handling Facilities Leases Leases for coal handling facilities at Springerville used in common by all four Springerville units
Springerville Common Facilities Facilities at Springerville used in common by all four Springerville unitsUnits 1 and 2
Springerville Common Facilities Leases Leveraged lease arrangements relating to an undivided one-half interest in certain Springerville Common Facilities
Springerville Unit 1 Unit 1 of the Springerville Generating Station
Springerville Unit 1 Leases 
Leveraged lease arrangement relating to Springerville Unit 1 and an
undivided one-half interest in certain Springerville Common Facilities
Springerville Unit 2 Unit 2 of the Springerville Generating Station
Springerville Unit 3 Unit 3 of the Springerville Generating Station
Springerville Unit 4 Unit 4 of the Springerville Generating Station
SRP Salt River Project Agricultural Improvement and Power District
Sundt H. Wilson Sundt Generating Station
Sundt Unit 4 Unit 4 of the H. Wilson Sundt Generating Station
TEP Tucson Electric Power Company, the principal subsidiary of UNS Energy Corporation
Third-Party Owners Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee under a separate trust agreement with each of the remaining two owner participants, Alterna Springerville LLC (Alterna) and LDVF1 TEP LLC (LDVF1) (Alterna and LDVF1, together with the Owner Trustees and Co-trustees, the Third-Party Owners)
Tri-State Tri-State Generation and Transmission Association, Inc.
UNS Electric UNS Electric, Inc., an indirect wholly-owned subsidiary of UNS Energy
UNS Energy UNS Energy Corporation, the parent company of TEP, whose principal executive offices are located at 88 East Broadway Boulevard, Tucson, Arizona 85701
UNS Energy affiliatesAffiliated subsidiaries of UNS Energy including UNS Electric, Inc., UNS Gas, Inc., and Southwest Energy Solutions, Inc.
UNS Gas UNS Gas, Inc., an indirect wholly-owned subsidiary of UNS Energy
 

vi




FORWARD-LOOKING INFORMATION
This Annual Report on Form 10-K contains forward-looking statements as defined by the Private Securities Litigation Reform Act of 1995. Tucson Electric Power Company (TEP) is including the following cautionary statements to make applicable and take advantage of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 for any forward-looking statements made by or for TEP in this Annual Report on Form 10-K. Forward-looking statements include statements concerning plans, objectives, goals, strategies, future events or performance and underlying assumptions, and other statements that are not statements of historical facts. Forward-looking statements may be identified by the use of words such as anticipates, believes, estimates, expects, intends, may, plans, predicts, projects, would, and similar expressions. From time to time, we may publish or otherwise make available forward-looking statements of this nature. All such forward-looking statements, whether written or oral, and whether made by or on behalf of TEP, are expressly qualified by these cautionary statements and any other cautionary statements which may accompany the forward-looking statements. In addition, TEP disclaims any obligation to update any forward-looking statements to reflect events or circumstances after the date of this report.report, except as may otherwise be required by the federal securities laws.
Forward-looking statements involve risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed therein. We express our expectations, beliefs, and projections in good faith and believe them to have a reasonable basis. However, we make no assurances that management’s expectations, beliefs or projections will be achieved or accomplished. We have identified the following important factors that could cause actual results to differ materially from those discussed in our forward-looking statements. These may be in addition to other factors and matters discussed in: Part I, Item 1A. Risk Factors; Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations; and other parts of this report. These factors include: state and federal regulatory and legislative decisions and actions; changes in, and compliance with, environmental laws, regulations, decisions and policies that could increase operating and capital costs, reduce generating facility output or accelerate generating facility retirements; regional economic and market conditions which could affect customer growth and energy usage; changes in energy consumption by retail customers; weather variations affecting energy usage; the cost of debt and equity capital and access to capital markets; the performance of the stock market and changing interest rate environment, which affect the value of our pension and other retiree benefit plan assets and the related contribution requirements and expense; the inability to make additions to our existing high voltage transmission system; unexpected increases in O&M expense; resolution of pending litigation matters; changes in accounting standards; changes in critical accounting estimates; the ongoing impact of mandated energy efficiency and distributed generation initiatives; changes to long-term contracts; the cost of fuel and power supplies; the ability to obtain coal from our suppliers; cyber attacks or challenges to our information security; and the performance of TEP's generating plants.


vii




PART I

ITEM 1. BUSINESS

GENERAL
Tucson Electric Power Company (TEP) and its predecessor companies have served the greater Tucson metropolitan area for over 100 years. TEP was incorporated in the State of Arizona in 1963. TEP is a vertically integrated, regulated electric utility that generates, transmitscompany serving approximately 417,000 retail customers. TEP’s service territory covers 1,155 square miles and distributes electricity.includes a population of approximately one million people in Pima County, as well as parts of Cochise County. TEP's principal business operations include generating, transmitting, and distributing electricity to its retail customers. In addition to retail sales, TEP also sells electricity, transmission, and ancillary services to other utilities, municipalities, and powerenergy marketing entities located primarily in the western United States. companies on a wholesale basis. TEP is subject to comprehensive state and federal regulation. The regulated electric utility operation is TEP's only segment.
TEP is a wholly owned subsidiary of UNS Energy Corporation (UNS Energy), a utility services holding company. In August 2014, UNS Energy iswas acquired by Fortis Inc. (Fortis) and became an indirect wholly owned subsidiary of Fortis, Inc. (Fortis) which is a leader in the largest investor-ownedNorth American electric and gas utility business.
REGULATED UTILITY OPERATIONS
TEP delivers electricity to retail customers in southern Arizona. TEP owns or has contracts for coal, natural gas, wind, solar, and electriclandfill gas generation resources to provide electricity. This electricity, together with electricity purchased on the wholesale market, is delivered over transmission lines which are part of the Western Interconnection, a regional grid in the United States. The electricity is then transformed to lower voltages and delivered to customers through TEP's distribution utility holding company in Canada.system.
FORTIS ACQUISITION OF UNS ENERGY
UNS Energy,TEP operates under a certificate of public convenience and necessity as regulated by the parent of TEP, was acquired by Fortis for $60.25 per share of UNS Energy common stock in cash effective August 15, 2014.
The Arizona Corporation Commission'sCommission (ACC) approval of the Merger was subject, under which TEP is obligated to certain stipulations, including, but not limitedprovide electricity service to the following:
TEP will provide creditscustomers within its service territory. The ACC establishes retail rates on retail customers' bills totaling approximately $19 million over five years: $6 million in year one and $3 million annually in years two through five. The monthly bill credits will be applied each year from October through March effective October 1, 2014;
Dividends paid froma cost-of-service basis, which are designed to allow TEP to UNS Energy cannot exceed 60 percentrecover its costs of TEP's annual net income forproviding services and an opportunity to earn a reasonable return on its investment.

1



CUSTOMERS
Electricity sold to retail and wholesale customers by class of customer and the earlieraverage number of fiveretail customers over the last three years or until such time that TEP's equity capitalization reaches 50 percent of total capital; andwere as follows:
Fortis making an equity investment of at least $220 million to UNS Energy and its regulated subsidiaries, including TEP. Fortis exceeded the investment requirement by contributing $287 million to UNS Energy through December 31, 2014. UNS Energy then contributed a total of $225 million to TEP through December 31, 2014.
As a result of the Merger being completed, TEP recorded approximately $15 million in 2014 as its allocated share of merger-related expenses, in addition to the customer bill credits discussed above. Merger-related expenses include investment banker fees, legal expenses, and accelerated expenses for certain share-based compensation awards.
SERVICE AREA AND CUSTOMERS
TEP’s service territory covers 1,155 square miles with service to approximately 415,000 retail electric customers and includes a population of approximately one million people in the greater Tucson metropolitan area in Pima County, as well as parts of Cochise County. TEP also sells wholesale electricity to other entities in the western United States.
 2015 2014 2013
Electric Sales - GWh           
Residential3,724 28% 3,727 29% 3,867 30%
Commercial2,124 15% 2,170 17% 2,187 17%
Industrial (Non-mining)2,063 15% 2,098 16% 2,114 17%
Mining1,109 8% 1,137 9% 1,079 9%
Other33 % 33 % 32 %
Total Electric Retail Sales9,053 66% 9,165 71% 9,279 73%
Electric Wholesale Sales - Long-Term750 5% 618 5% 605 5%
Electric Wholesale Sales - Short-Term3,928 29% 3,082 24% 2,859 22%
Total Electric Sales13,731 100% 12,865 100% 12,743 100%
            
Average Number of Retail Customers:           
Residential376,439 90% 374,204 90% 370,925 90%
Commercial38,253 9% 38,079 9% 37,783 9%
Industrial (Non-mining)588 % 604 % 622 %
Mining4 % 4 % 4 %
Other1,857 1% 1,858 1% 1,843 1%
Total Retail Customers417,141 100% 414,749 100% 411,177 100%
Retail Customers
TEP provides electric utility service to a diverse group of residential, commercial, industrial, and public sector customers. Major industries served include copper mining, cement manufacturing, defense, health care, education, military bases, and other governmental entities. TEP’s retail sales are influenced by several factors, including economic conditions, seasonal weather patterns, Demand Side Management (DSM) initiatives and the increasing use of energy efficient products, and opportunities for customers to generate their own electricity.
Customer Base
The table below shows the percentage distribution of TEP’s energy sales by major customer class over the last three years. In 2015, the retail energy consumption by customer class is expected to be similar to the historical distribution.
owned distributed generation.
 2014 2013 2012
Residential41% 42% 41%
Commercial24% 23% 24%
Non-mining Industrial23% 23% 23%
Mining12% 12% 12%

1



Local, regional, and national economic factors can impact the growth in the number of customers in TEP’s service territory. In 2014, 2013, and 2012,each of the past five years, TEP’s average number of retail customers increased by less than 1% in each year.
We expect. TEP expects the number of TEP’s retail customers to increase at a rate of approximately 1% in 2015 and 2016 based on estimated population growth in ourits service territory.
TEP’s retail sales volume in 2015 was approximately 9,053 gigawatt-hours (GWh), which is a decrease of 3% from 2011 levels. During the past five years, local economic conditions combined with state requirements to reduce retail sales through energy efficiency and distributed generation have resulted in lower sales volumes and lower use per customer.
Two of TEP’s largest retail customers are in the copper mining industry. TEP’s kilowatt-hour (kWh)GWh sales to mining customers depend on a variety of factors including the market price of copper,commodity prices, the electricity rate paid by mining customers, and the mines’ potential development of their own electric generation resources. TEP’s kWhGWh sales to mining customers increaseddecreased by 5.4%2% in 2014.2015 as a result of mining curtailments due to declining commodity prices. In 2016, TEP expects additional curtailments to certain mining customers based on announced plans and current commodity prices. TEP cannot predict how long the commodity prices will remain low or the impact prices will have on mining production.
See Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations Sales to Mining Customers.for additional information regarding mining customers.

Retail Sales Volumes
2

TEP’s retail sales volumes in 2014 were approximately 9,165 Gigawatt-hours (GWh). These volumes were 1.3% below 2010 levels. During the past four years, economic conditions and state requirements for Energy Efficiency (EE) and Distributed Generation (DG) have negatively affected retail electricity sales.


Wholesale Sales
TEP’s electric utility operations include the wholesale marketing of electricity to other utilities and power marketers. Wholesale sales transactions are made on both a firm and interruptible basis. A firm contract requires TEP to supply power on demand (except under limited emergency circumstances), while an interruptible contract allows TEP to stop supplying power under defined conditions. See Generating and Other Resources, Purchases and Interconnections, below.
Generally, TEP commits to future sales based on expected excess generating capability, forward prices, and generation costs, using a diversified portfolio approach to provide a balance between long-term, mid-term, and spot energy sales. TEP’s wholesale sales consist primarily of two types of sales:types:
Long-Term Wholesale Sales
Long-term wholesale sales contracts cover periods of more than one year.year or greater. TEP typically uses its own generation to serve the requirements of its long-term wholesale customers. In 2014,2015, TEP’s two primary long-term contracts were with Salt River Project Agriculture Improvement and Power District (SRP) and, Shell Energy North America (Shell), the Navajo Tribal Utility Authority (NTUA), and TRICO Electric Cooperative (TRICO). The SRP contract expires in May 2016, andthe Shell contract expires in December 2017, the NTUA contract expires in December 2022.2022, and the TRICO contract expires in December 2024.
In December 2014,November 2015, TEP entered into two additionala long-term wholesale sales contracts that began incontract with Navopache Electric Cooperative (Navopache). Delivery of power begins January 2015. The first long-term sales contract is with TRICO Electric Cooperative1, 2017 and expires in December 2024. The second long-term sales contract is with Shell Energy North America and expires in December 2017. The execution of these two additional wholesale sales contracts use near-term capacity acquired with TEP’s purchase of Gila River Unit 3 discussed below.2041.
See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations, Long-TermShort-Term Wholesale Sales.
Short-Term Sales
Forward contracts commit TEP to sell a specified amount of capacity or energy at a specified price over a given period of time, typically for one-month three-month, or one-yearthree-month periods. TEP also engages in short-term sales by selling energy in the daily or hourly markets at fluctuating spot market prices and making other non-firm energy sales. AllThe majority of our revenues from short-term wholesale sales offset fuel and purchased power costs and are passed through to TEP’s retail customers. TEP uses short-term wholesale sales as part of its hedging strategy to reduce customer exposure to fluctuating power prices. See Rates
Competition
Retail Customers
TEP is the primary electric service provider to retail customers within its service territory and Regulation, below.operates under a certificate of public convenience and necessity as regulated by the ACC. TEP is subject to competition from customer-sited distributed generation, energy efficiency, and other emerging technologies. TEP is experiencing increases in the levels of customer-sited solar arrays and the use of net energy metering, which allows self-generating retail customers to use their excess generation to offset a portion of their future electricity consumption at the full retail rate.
Wholesale Sales
The Federal Energy Regulatory Commission (FERC) regulates rates for wholesale power sales and transmission services. TEP's wholesale activity primarily consists of Short-Term Wholesale Sales to manage fuel and purchased power supplies to serve retail customer energy requirements and Long-Term Wholesale Sales to optimize generation capacity. As a result of its wholesale activity, TEP competes with other utilities, power marketers and independent power producers in the wholesale markets.

23



GENERATING AND OTHER RESOURCESFACILITIES
As of January 1,December 31, 2015 following completion of the purchase of a 24.8% leased interest in Springerville Unit 1 and expiration of the Springerville Unit 1 leases, TEP owned 2,448 MW2,501 megawatts (MW) of nominal generating capacity, as set forth in the following table. Nominal capacity is based on unit design net output.
Unit Date Resource Capacity Operating TEP’s Share Unit Date Resource Capacity Operating TEP’s Share
Generating SourceNo. Location In Service Type MW Agent % MW No. Location In Service Type MW Agent % 
MW (1)
Springerville Station(1)
1 Springerville, AZ 1985 Coal 387
 TEP 49.5
 192
 1 Springerville, AZ 1985 Coal 387
 TEP 49.5
 192
Springerville Station2 Springerville, AZ 1990 Coal 390
 TEP 100.0
 390
 2 Springerville, AZ 1990 Coal 406
 TEP 100
 406
San Juan Station1 Farmington, NM 1976 Coal 340
 PNM 50.0
 170
 1 Farmington, NM 1976 Coal 340
 PNM 50.0
 170
San Juan Station2 Farmington, NM 1973 Coal 340
 PNM 50.0
 170
 2 Farmington, NM 1973 Coal 340
 PNM 50.0
 170
Navajo Station1 Page, AZ 1974 Coal 750
 SRP 7.5
 56
 1 Page, AZ 1974 Coal 750
 SRP 7.5
 56
Navajo Station2 Page, AZ 1975 Coal 750
 SRP 7.5
 56
 2 Page, AZ 1975 Coal 750
 SRP 7.5
 56
Navajo Station3 Page, AZ 1976 Coal 750
 SRP 7.5
 56
 3 Page, AZ 1976 Coal 750
 SRP 7.5
 56
Four Corners Station4 Farmington, NM 1969 Coal 785
 APS 7.0
 55
 4 Farmington, NM 1969 Coal 785
 APS 7.0
 55
Four Corners Station5 Farmington, NM 1970 Coal 785
 APS 7.0
 55
 5 Farmington, NM 1970 Coal 785
 APS 7.0
 55
Gila River Power Station3 Gila Bend, AZ 2003 Gas 550
 Ethos Energy 75.0
 413
 3 Gila Bend, AZ 2003 Gas 550
 Ethos Energy 75.0
 413
Luna Generating Station1 Deming, NM 2006 Gas 555
 PNM 33.3
 185
 1 Deming, NM 2006 Gas 555
 PNM 33.3
 185
Sundt Station1 Tucson, AZ 1958 Gas/Oil 81
 TEP 100.0
 81
 1 Tucson, AZ 1958 Gas/Oil 81
 TEP 100
 81
Sundt Station2 Tucson, AZ 1960 Gas/Oil 81
 TEP 100.0
 81
 2 Tucson, AZ 1960 Gas/Oil 81
 TEP 100
 81
Sundt Station3 Tucson, AZ 1962 Gas/Oil 104
 TEP 100.0
 104
 3 Tucson, AZ 1962 Gas/Oil 104
 TEP 100
 104
Sundt Station (2)
4 Tucson, AZ 1967 Coal 120
 TEP 100.0
 120
 4 Tucson, AZ 1967 Gas 156
 TEP 100
 156
Sundt Internal Combustion Turbines Tucson, AZ 1972-1973 Gas/Oil 50
 TEP 100.0
 50
 Tucson, AZ 1972-1973 Gas/Oil 50
 TEP 100
 50
DeMoss Petrie Tucson, AZ 2001 Gas 75
 TEP 100.0
 75
 Tucson, AZ 2001 Gas 75
 TEP 100
 75
North Loop Tucson, AZ 2001 Gas 94
 TEP 100.0
 94
 Tucson, AZ 2001 Gas 94
 TEP 100
 94
Springerville Solar Station Springerville, AZ 2002-2014 Solar 16
 TEP 100.0
 16
 Springerville, AZ 2002-2014 Solar 16
 TEP 100
 16
Tucson Solar Projects Tucson, AZ 2010-2014 Solar 12
 TEP 100.0
 12
 Tucson, AZ 2010-2014 Solar 13
 TEP 100
 13
Ft. Huachuca Project Ft. Huachuca, AZ 2014 Solar 17
 TEP 100.0
 17
 Ft. Huachuca, AZ 2014 Solar 17
 TEP 100
 17
Total TEP Capacity (3)
     2,448
     2,501
(1) 
At December 31, 2014, TEP owned 96 MW of capacity at Springerville Unit 1 and continued to lease the remaining 291 MW of capacity. In January 2015, TEP purchased 96 MW of capacity bringing the total owned capacity to 192 MW. TEP's lease of the remaining 195 MW expiredCapacity measured in January 2015. See Note 5 of Notes to Consolidated Financial Statements.direct current (DC).
(2) 
Sundt Station Unit 4 is a multi-fuel generating facility that can be operated on either coal or natural gas.gas as a primary fuel source. In August 2015, TEP exhausted its existing coal supply at Sundt Station Unit 4 and plans to continue operating Sundt Station Unit 4 with natural gas as a primary fuel source. The table above reflects the nominal generating capacity assuming the unit is fueled by coal. Ifnatural gas. Refer to Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Environmental Matters of this Form 10-K for additional information related to environmental matters impacting Unit 4 of the Unit burns natural gas, it has a nominal capacity of 156 MW.H. Wilson Sundt Generating Station (Sundt).
(3) 
Excludes 932913 MW of additional resources, which consist of certain capacity purchases and interruptible retail load.
Springerville Generating Station
Springerville Unit 1
TEP leasedhas a 49.5% ownership interest in Unit 1 of the Springerville Generating Station and an undivided one-half interest in certain Springerville Common Facilities (collectively Springerville(Springerville Unit 1) under seven separate lease agreements (Springerville Unit 1 Leases) that were accounted for as capital leases. The leases expired in January 2015 and included fair market value renewal and purchase options. As of January 1, TEP owns 49.5% of Unit 1 and a one-quarter interest inoperates the common facilities.
In 2006, TEP purchased a 14.1% undivided ownership interestremaining interests in Springerville Unit 1 representing approximately 55 megawatts (MW)on behalf of capacity. During 2013, TEP agreed to purchase leased interests of 35.4% or 137 MW of Springerville Unit 1, for an aggregate purchase price of approximately $65 million. TEP completed the purchase of a 10.6% leased interest, representing 41 MW of capacity in December 2014 and a 24.8% leased interest, representing 96 MW of capacity, in January 2015. The remaining 50.5% of Springerville Unit 1, or 195 MW of capacity, continues to be owned by third parties, i.e.

3



Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee under a separate trust agreement with each of the remaining two owner participants, Alterna Springerville LLC (Alterna) and LDVF1 TEP LLC (LDVF1) (Alterna and LDVF1, together with the Owner Trustees and Co-trustees, the Third-Party Owners). With the expiration of the leases in January 2015, TEP is obligated to operate the unitThe Owner Trustees and Co-Trustees are responsible for the Third-Party Owners under an existing facility support agreement. The Third-Party Owners are obligated to compensate TEP for their pro rata share of expenses for the unit in the amount of approximately $1.5 million per month, and their share of operating and capital expenditures, which are approximately $7 millioncosts for the facility. See Note 7 of Notes to Consolidated Financial Statements in 2015.
See Item 7. Management’s Discussion and Analysis8 of Financial Condition and Results of Operations, Factors Affecting Results of Operations, Springerville Unit 1.
Springerville Unit 2this Form 10-K for additional information regarding the Third-Party Owners.
Unit 2 of the Springerville Generating Station (Springerville Unit 2) is owned by San Carlos Resources, Inc. (San Carlos), a wholly-owned subsidiary of TEP.

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TEP's other interests in the Springerville Generating Station (Springerville) include: (i) 49.5% undivided interest in certain common facilities used by Springerville Unit 1; and (ii) an 83% ownership interest in the Springerville Coal Handling Facilities.
Springerville Common Facilities Leases
The leveraged lease arrangements relating to ana 50% undivided one-half interest in certain Springerville Common Facilities (Springerville Common Facilities Leases), used by Springerville Unit 2, which expire in 2017 and 2021, have fair market value renewal options as well as fixed-price purchase options. The fixed prices to acquire the leased interests in the Springerville Common Facilities are $38 million in 2017 and $68 million in 2021.
Springerville Coal Handling Facilities Lease
In 1984, TEP sold and leased back the Springerville Coal Handling Facilities. Since entering into the lease, TEP purchased a 13% ownership interest in the Springerville Coal Handling Facilities. The terms of the Springerville Coal Handling Facilities Leases expire in April 2015 but have fixed-rate renewal options if certain conditions are satisfied as well as a fixed-price purchase provision of $120 million. In April 2014, TEP notified the owner participants and their lessors that TEP has elected to purchase their undivided ownership interests in the facilities at the fixed purchase price of $120 million upon the expiration of the lease term in April 2015. Upon TEP’s purchase, SRP is obligated to buy a portion of the Springerville Coal Handling Facilities from TEP for approximately $24 million and Tri-State Generation and Transmission Association, Inc. (Tri-State) is obligated to either 1) buy a portion of the facilities for approximately $24 million or 2) continue to make payments to TEP for the use of the facilities.
See Note 56 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K and Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Liquidity and Capital Resources Contractual Obligations.for additional information regarding the capital leases.
Springerville Units 3 and 4
Springerville Units 3 and 4 are each approximately 400 MW coal-fired generating facilities that are operated, but not owned by TEP. These facilities are located at the same site as Springerville Units 1 and 2. The lessee of Springerville Unit 3 and the owner of Springerville Unit 4 compensate TEP for operating the facilities and pay an allocated portion of the fixed costs related to the Springerville common facilities and Coal Handling Facilities.
Sundt Generating Station
The H. Wilson Sundt Generating Station (Sundt) and the internal combustion turbines located in Tucson are designated as “must-run generation”must-run generation facilities. Must-run generation units are required to run in certain circumstances to maintain distribution system reliability and to meet local load requirements.
Gila River Generating Station Unit 3Renewable Energy Resources
On December 10, 2014,The ACC’s Renewable Energy Standard (RES) requires TEP, and UNS Electric, Inc. (UNS Electric),other affected utilities, to increase their use of renewable energy each year until it represents at least 15% of their total annual retail energy requirements by 2025, with distributed generation accounting for 30% of the annual renewable energy requirement. Affected utilities must file an affiliated subsidiaryannual RES implementation plan for review and approval by the ACC. TEP plans to meet this requirement through a combination of UNS Energy, acquired Gila River Unit 3, a gas-fired combined cycle unit with a nominal capacity rating of 550 MW located in Gila Bend, Arizona, from a subsidiary of Entegraowned resources and Power Group LLC. TEP purchased a 75% undivided interest in Gila River Unit 3 (413 MW) for $164 million, and UNS Electric purchased the remaining 25% undivided interest.Purchase Agreements (PPAs). See Item 7. Management's Discussion and Analysis of Financial Condition and Factors Affecting Results of Operations, Gila River Generating Station Unit 3 and Note 72 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K and Rates and Regulations below for additional information regarding RES.
The purchase of Gila River Unit 3 is intended to replace the expired coal-fired leased capacity from Springerville Unit 1 and the expected reduction of coal-fired generating capacity from San Juan Unit 2, and is consistent with TEP's strategy to diversify its generation fuel mix. See Environmental Matters, Regional Haze Rules, San Juan, below.
Owned Renewable Energy Resources
Owned Resources
As of December 31, 2014,2015, TEP owned 4546 MW of photovoltaic (PV) solar generating capacity. The Springerville solar system, which is located near the Springerville Generating Station, has a total capacity of 16 MW, including 10 MW of capacity

4



completed in December 2014. In December 2014,2016, TEP also completed aplans to complete an additional solar project providing 17 MW of capacity at Ft. Huachuca, Arizona. TEP’s remaining 12adding 5 MW of PV solar generating capacity. The solar generating facilities are located on properties held under easements and leases. In December 2015, TEP also acquired a 5 MW concentrated solar project which does not increase capacity is located inbut displaces the Tucson area.equivalent amount of steam produced by burning fossil fuel.
Renewable Power Purchase Agreements
In order to meet the ACC’s renewable energy requirements,As of December 31, 2015, TEP has power purchase agreements (PPAs)renewable PPAs for 145175 MW of capacity measured in direct current (DC) from solar resources, 9080 MW of capacity measured in alternating current (AC) from wind resources and 4 MW of capacity measured in AC from a landfill gas generation plant. At December 31, 2014, approximately 124 MW of contracted solar resources and 50 MW of contracted wind resources were operational. The remaining resources are expected to be developed over the next several years. The solar PPAs contain options that allow TEP to purchase all or part of the related project at a future period. See Rates and Regulation, Renewable Energy Standard and Tariff, below.
Power Purchases
TEP purchases power from other utilities and power marketers. TEP may enter into contracts: (a)contracts to purchasepurchase: (i) energy under long-term contracts to serve retail load and long-term wholesale contracts, (b) to purchasecontracts; (ii) capacity or energy during periods of planned outages or for peak summer load conditions,conditions; and (c) to purchase(iii) energy for resale to certain wholesale customers under load and resource management agreements.
TEP typically uses generation from its gas-fired units, supplemented by power purchases, to meet the summer peak demands of its retail customers. Some of these power purchases are price-indexed to natural gas. Due to its increasing seasonal gas and purchased power usage, TEP hedges a portion of its total natural gas exposure with fixed price contracts for a maximum of three years. TEP also purchases energy in the daily and hourly markets to meet higher than anticipated demands, to cover unplanned generation outages, or when doing so is more economical than generating its own energy.

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TEP is a member of a regional reserve-sharing organization and has reliability and power sharing relationships with other utilities. These relationships allow TEP to call upon other utilities during emergencies, such as plant outages and system disturbances, and reduce the amount of reserves TEP is required to carry.
Springerville Units 3 and 4
Springerville Units 3 and 4 are each approximately 400 MW coal-fired generating facilities that are operated, but not owned by TEP. These facilities are located at the same site as Springerville Units 1 and 2. The owners of Springerville Units 3 and 4 compensate TEP for operating the facilities and pay an allocated portion of the fixed costs related to the Springerville Common Facilities and Coal Handling Facilities. See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations, Springerville Units 3 and 4.PEAK DEMAND AND FUTURE RESOURCES
Peak Demand and Resources
Peak Demand2014 2013 2012 2011 2010
MW
(in MW)2015 2014 2013 2012 2011
Retail Customers2,218
 2,230
 2,290
 2,334
 2,333
2,222
 2,218
 2,230
 2,290
 2,334
Firm Sales to Other Utilities673
 484
 286
 322
 340
638
 673
 484
 286
 322
Coincident Peak Demand (A)2,891
 2,714
 2,576
 2,656
 2,673
2,860
 2,891
 2,714
 2,576
 2,656
         
Total Generating Resources2,240
 2,240
 2,267
 2,262
 2,245
2,452
 2,240
 2,240
 2,267
 2,262
Other Resources (1)
932
 775
 683
 1,009
 799
913
 932
 775
 683
 1,009
Total TEP Resources (B)3,172
 3,015
 2,950
 3,271
 3,044
3,365
 3,172
 3,015
 2,950
 3,271
Total Margin (B) – (A)281
 301
 374
 615
 371
505
 281
 301
 374
 615
Reserve Margin (% of Coincident Peak Demand)10% 11% 15% 23% 14%18% 10% 11% 15% 23%
(1) 
Other Resources include firm power purchases and interruptible retail and wholesale loads.
The chart above shows the relationship over a five-year period between peak demand and energy resources. Total margin is the difference between total energy resources and coincident peak demand, and the reserve margin is the ratio of margin to coincident peak demand. The reserve margin in 20142015 was in compliance with reliability criteria set forth by the Western Electricity Coordinating Council, a regional council of NERC.North American Reliability Corporation (NERC).
Peak demand occurs during the summer months due to the cooling requirements of retail customers. Retail peak demand varies from year-to-year due to weather, economic conditions, and other factors. Retail peak demand has primarily declined over the five-year period of 2010

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to 2014 due primarily to weak economic conditions and the implementation of energy efficiency programs and distributed generation.
Forecasted retail peak demand for 20152016 is 2,2222,109 MW compared with actual peak demand of 2,2182,222 MW in 2014.2015. TEP’s 20152016 estimated retail peak demand is based on weather patterns observed over a 10-year period and other factors, including estimates of customer usage.usage and planned curtailment of mining customers. TEP believes existing generation capacity and PPAs are sufficient to meet expected demand in 20152016 and established reserve margin criteria.
Future Resources
At December 31, 2015, approximately 49% of TEP's generating capacity was fueled by coal. Existing and proposed federal environmental regulations, as well as potential changes in state regulation, may increase the cost of operating coal-fired generating facilities. TEP is executing strategies and evaluating additional steps to reduce its dependency on coal generation while still meeting its peak load requirements. In August 2015, TEP exhausted its existing coal supply at Unit 4 of the H. Wilson Sundt Generating Station (Sundt Unit 4). TEP expects to continue operating Sundt Unit 4 on natural gas as a primary fuel source.
See Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations for additional information regarding TEP's generating facilities.

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FUEL SUPPLY
Fuel and Purchased Power Summary
Resource information is provided below:
Average Cost per kWh (cents per kWh) Percentage of Total kWh ResourcesAverage Cost per kWh (cents per kWh) Percentage of Total kWh Resources
2014 2013 2012 2014 2013 20122015 2014 2013 2015 2014 2013
Coal2.50
 2.66
 2.54
 68% 75% 72%2.44
 2.50
 2.66
 60% 68% 75%
Gas4.99
 4.57
 4.54
 9% 8% 11%3.35
 4.99
 4.57
 19% 9% 8%
Purchased Power4.79
 4.83
 3.44
 23% 17% 17%4.05
 4.79
 4.83
 21% 23% 17%
All Sources3.64
 3.54
 3.19
 100% 100% 100%3.31
 3.64
 3.54
 100% 100% 100%
Coal
TEP’s principal fuelThe coal used for electric generation is low-sulfur, bituminous or sub-bituminous coal from mines in Arizona and New Mexico. The table below provides information on the existing coal contracts that supply our generating stations. The average cost per ton of coal per million metric British thermal unit (MMBtu), including transportation, was $45.50$2.34 in 2015, $2.43 in 2014, $48.51and $2.57 in 2013, and $45.84 in 2012.2013.
StationCoal Supplier 2014 Coal
Consumption
(tons in 000s)
 
Contract
Expiration
 
Avg.
Sulfur
Content
 Coal Obtained From Coal Supplier 2015 Coal
Consumption
(tons in 000s)
 
Contract
Expiration
 
Avg.
Sulfur
Content
 Coal Obtained From
Springerville(1)Peabody CoalSales 2,868 2020 0.9% Lee Ranch Coal Co. Peabody CoalSales 2,676 2020 1.0% Lee Ranch Mine/El Segundo Mine
Four Corners(1)(2)
BHP Billiton 344 2031 0.7% Navajo Indian Tribe BHP Billiton 378 2031 0.7% Navajo Mine
San Juan(3)San Juan Coal Co. 1,146 2017 0.8% Federal and State Agencies San Juan Coal Co. 1,079 2022 0.8% San Juan Mine
NavajoPeabody CoalSales 591 2019 0.6% Navajo and Hopi Indian Tribes Peabody CoalSales 510 2019 0.6% Kayenta Mine
(1)
Peabody has a pending sale of the Lee Ranch Mine/El Segundo Mine to Bowie Resources Partners.
(2) 
Beginning in July 2016 through June 2031, the coal for Four Corners will be purchased from the Navajo Transitional Energy Company (NTEC). NTEC purchased the mine located near Four Corners from BHP Billiton and will begin operatingoverseeing the mine operation in 2016.
(3)
BHP Billiton sold San Juan Coal Co. to Westmoreland Coal Company, effective January 31, 2016.
TEP Operated Generating Facilities
The coal supplies for Springerville Units 1 and 2 are transported approximately 200 miles by railroad from northwestern New Mexico. TEP expects coal reserves to be sufficient to supply the estimated requirements for Springerville Units 1 and 2 for their presently estimated remaining lives.
TEP does not haveno longer uses coal as a long-term coal supply contractprimary fuel source for Sundt Unit 4. Prior to 2010, Sundt Unit 4 was predominantly fueled by coal; however, the generating station also can be operated with natural gas. Both fuels are combined with landfill gas, a renewable energy resource, delivered from a nearby landfill. Since 2010, TEP has fueled Sundt Unit 4 with both coal and natural gas depending on which resource is most economic. See Note 6 of Notes to Consolidated Financial Statements.
Coal Generating Facilities Operated by Others
TEP also participates in jointly-owned coal-fired generating facilities at the Four Corners Generating Station (Four Corners), the Navajo Generating Station (Navajo), and the San Juan Generating Station (San Juan). Four Corners, which is operated by Arizona Public Service Company (APS), and San Juan, which is operated by Public Service Company of New Mexico (PNM), are mine-mouth generating stations located adjacent to the coal reserves. Navajo, which is operated by SRP, obtains its coal supply from athe nearby Kayenta coal mine and receives deliveries on a dedicated electric rail delivery system. The coal supplies are received under contracts administered by the operating agents. As indicated in the table above, the currentEffective January 31, 2016, Westmoreland Coal Company purchased San Juan Coal Company (SJCC) from BHP Billiton and has also agreed to a new coal supply contractagreement extending through June 30, 2022. TEP expects coal reserves available to these three jointly-owned generating facilities to be sufficient for San Juan expires on December 31, 2017. TEP and other San Juan owners are currently negotiating agreements concerning the future San Juan fuel supply withremaining lives of the existing coal supplier. If the participants are unable to negotiate an economic fuel supply, the continued operation of San Juan could be adversely affected.stations.

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Natural Gas Supply
TEP typically uses generation from its facilities fueled by natural gas, in addition to energy from its coal-fired facilities and purchased power, to meet the summer peak demands of its retail customers and local reliability needs. The average cost of natural gas per MMBtu, including transportation, was $3.49 in 2015, $5.17 in 2014, and $4.55 in 2013.

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TEP purchases capacity from El Paso Natural Gas (EPNG) for transportation from the San Juan and Permian Basins to its Sundt plant under firm transportation agreements. TEP also purchases firm gas transportation for Gila River Unit 3 from EPNG and Transwestern Pipeline Co., and for Luna Generating Station (Luna) from EPNG. TEP purchases gas from Southwest Gas Corporation under a retail tariff for North Loop’s 94 MW of internal combustion turbines and receives distribution service under a transportation agreement for DeMoss Petrie, a 75 MW internal combustion turbine. TEP purchases capacity from El Paso Natural Gas (EPNG) for transportation from the San Juan and Permian Basins to its Sundt plant under firm transportation agreements and buys gas from third-party suppliers for Sundt and DeMoss Petrie.
TEP also purchases firm gas transportation for Gila from EPNG and Transwestern and for Luna Generating Station (Luna) from EPNG.
TRANSMISSION ACCESSAND DISTRIBUTION
TEP's transmission system is part of the Western Interconnection, which includes the interconnected transmission systems of 14 western states, two Canadian provinces and parts of Mexico. TEP's transmission system, together with contractual rights on other transmission systems, enables TEP has transmissionto integrate and access and power transaction arrangements with over 140 electric systems or suppliers. TEP also has various ongoing projects that are designedgeneration resources to increase access to the regional wholesale energy market and improve the reliability, capacity and efficiency ofmeet its existingcustomer load requirements. TEP's transmission and distribution systems.systems included approximately 2,170 miles of transmission lines, and 7,557 miles of distribution lines as of December 31, 2015.
To improve transmission capacity between Palo Verde and Tucson,In 2015, TEP participated in thecompleted construction and ownership ofplaced into service a 500 kV500-Kilo-volt (kV) transmission line from the Palo Verde area to the Pinal Central substation east of Casa Grande, AZ. This project was placed in service in 2014. Also, construction is underway on a 45-mile 500-kV transmission lineextending from the Pinal Central substation to TEP’s Tortolita substation northwest of Tucson. TEP expects the Pinal CentralThe transmission line was built to Tortolita line to be in service in 2016. Additionally, TEP is working with SRP and others to tie the Gila River power plant into TEP’s Palo Verde to Tucsonprovide additional transmission system. This will provide an improved electrical path to bring Gila River Unit 3 power into Tucson.
As part of TEP’s purchase of the Gila River unit TEP received transmission rights across the APS transmission system. These rights extend from the Gila River switchyard adjacent to the plant to the Jojoba switchyard. TEP is pursuing interconnection of the Jojoba switchyard to the existing transmission linecapacity from the Palo Verde area to Pinal Central substation in which TEP has an ownership interest. This interconnection, along with the rights obtained with the purchase, will provide direct transmission access from the Gila Plant tointo TEP’s northern service territory.
Discontinued Transmission Project
TEP and UNS Electric had initiated a project to jointly construct a 60-mile transmission line from Tucson, Arizona to Nogales, Arizona in response to an order by the ACC to UNS Electric to improve the reliability of electric service in Nogales. At this time, TEP and UNS Electric will not proceed with the project based on the cost of the proposed 345-kV line, the difficulty in reaching agreement with the United States Forest Service on a path for the line, and concurrence by the ACC that recent transmission additions by TEP and UNS Electric support elimination of this project. TEP and UNS Electric plan to maintain the Certificate of Environmental Compatibility (CEC) previously granted by the ACC for this project in contemplation of using a greater part of the route to serve future customers and to address reliability needs. As part of the 2013 TEP Rate Order, TEP agreed to seek recovery of the project costs from the Federal Energy Regulatory Commission (FERC) before seeking rate recovery from the ACC. In 2012, TEP wrote off $5 million of the capitalized costs believed not probable of recovery and recorded a regulatory asset of $5 million for the balance deemed probable of recovery in TEP's next FERC rate case.
RATES AND REGULATION
The ACC and the FERC each regulate portions of the utility accounting practices and rates of TEP. The ACC regulates rates charged to retail customers, the siting of generation and transmission facilities, the issuance of securities,debt, transactions with affiliated parties, and other utility matters. The ACC also enacts other regulations and policies that can affect business decisions and accounting practices. The FERC regulates terms and prices of transmission services and wholesale electricity sales.
2013 TEP2015 Rate OrderCase
In June 2013,November 2015, TEP filed a general rate case with the ACC issued an order (2013 TEPrequesting a Base Rate Order) which was based on a test year ended December 31, 2011. The 2013 TEP Rate Order approved new rates effective July 1, 2013.increase of $110 million and various rate design changes. See Note 2 of Notes to Consolidated Financial Statements in Item 8 of this From 10-K and SeePart II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations 2013 TEPfor key provisions regarding the 2015 Rate Order.Case.
Purchased Power and Fuel Adjustment Clause
The Purchased Power and Fuel Adjustment Clause (PPFAC) allows TEP to recover its fuel, transmission, and purchased power costs, including demand charges, and the costs of contracts for hedging fuel and purchased power costs for its retail customers. The PPFAC consists of a forward component and a true-up component.

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The true-up component will reconcilereconciles any over/under collected amounts from the preceding 12-month period and will beis credited to or recovered from customers in the subsequent year.
TEP’s PPFAC also includes the recovery of the following costs and/or credits: lime costs used to control SO2sulfur dioxide (SO2) emissions at Springerville,Springerville; sulfur credits received from TEP’s coal suppliers; broker fees; 100% ofrevenues from short-term wholesale revenues;sales; and all of the proceeds from the sale of SO2SO2 allowances.
At December 31, 2014,2015, TEP had under-collectedover-collected fuel and purchased power costs on a billed-to-customer basis of $32by $18 million.
Renewable Energy StandardStandards and Tariff
The ACC’s Renewable Energy Standard (RES)RES requires TEP and other affected utilities to increase their use of renewable energy each year until it represents at least 15% of their total annual retail energy requirements in 2025, with distributed generation accounting for 30% of the annual renewable energy requirement. Affected utilities must file an annual RES implementation plansplan for review and approval by the ACC. The approved cost of carrying out those plans is recovered from retail customers through the RES surcharge until such costs are reflected in TEP’s Base Rates. The associated lost revenues attributable to meeting distributed generation targets will be partially recovered through the Lost Fixed Cost Recovery Mechanism (LFCR). See Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information.
In December 2014,July 2015, TEP submitted its application for the ACC approved TEP's 20152016 RES implementation plan. Underplan that includes a budget of $57 million, which will be partially offset by applying approximately $9 million of previously recovered carryover funds. TEP proposed to recover $48 million through the plan, TEP expects to collect approximately $33 million from retail customers during 2015 toRES surcharge. The budget will fund the following: the above market cost of renewable energy purchases; performance basedpreviously awarded performance-based incentives for customer installed DG;distributed generation; depreciation and a return on TEP's investments in company-owned solar projects; and various other program costs. TEP expects to receive a

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decision on the application in the first half 2016. TEP expects to recognize approximately $4$9 million of revenue in 20152016 as a return on company-owned solar projects.
The 2015 RES implementation plan authorized a TEP investmentpercentage of $10 million inretail kilowatt-hour (kWh) sales attributable to the 2015 for up to 600 company-owned residential solar projects. Participants in this program will take service under a fixed electric rate. While participating customers could realize significant savings over time if TEP's standard rates or energy costs increase, their payments are expected to cover a majority of the company's fixed service costs associated with that customer.
TEP met the overall 2014 RES renewable energy targetrequirement was 8.6%, exceeding the overall 2015 requirement of 4.5% of retail kWh sales and5.0%. TEP expects to meet the 2015 target2016 RES renewable energy requirement of 5%6.0% of retail kWh sales. Compliance with RES is determined through periodic filings with the ACC.ACC's review of TEP's annual RES implementation plan. As TEP no longer pays incentives to obtain distributed generation Renewable Energy Credits (REC), which are used to demonstrate compliance with the distributed generation requirement, the company may requestTEP has requested a waiver of the RES distributed generation requirements.requirements in its 2016 RES implementation plan.
Electric Energy Efficiency Standards
In 2010, the ACC approved new Electric EEEnergy Efficiency Standards (EE Standards) designed to require electric utilities to implement cost-effective programs to reduce customers' energy consumption. The Electric EE Standards require increasing cumulative annual targeted retail kWh savings equal to 22% by 2020. Since the implementation of the Electric EE Standards, TEP’s cumulative annual energy savings are approximately 7.0%9.3% of retail kWh sales. TEP’s compliancesales in 2015. Compliance with the Electric EE Standards is governed bydetermined through the ACC’s approvalACC's review of the company's annual energy efficiency implementation plans filed by TEP annually.plan.
In December 2014,February 2016, the ACC approved TEP’s 2014 and 2015 Energy Efficiency Implementation Plans.2016 energy efficiency implementation plan. Under the 20152016 plan, TEP expectshas been approved to collectrecover approximately $19$14 million from retail customers and will offer customers new and existing DSM programs. Energy savings realized through the programs will count toward Arizona’s Energy Efficiency StandardEE Standards and the associated lost revenue will be partially collectedrecovered through the Lost Fixed Cost Recovery Mechanism (LFCR).LFCR. See Note 2 of Notes to Consolidated Financial Statements. Statements in Item 8 of this Form 10-K for additional information.

ENVIRONMENTAL MATTERS
The EPA regulates the amount of SO2, nitrogen oxide (NOx), carbon dioxide (CO2), particulate matter, mercury and other by-products produced by power plants. TEP may incur added costs to comply with future changes in federal and state environmental laws, regulations, and permit requirements at its power plants. Environmental laws and regulations are subject to a range of interpretations, which may ultimately be resolved by the courts. Because these laws and regulations continue to evolve, TEP is unable to predict the impact of the changing laws and regulations on its operations and consolidated financial results. TEP expects to recover the cost of environmental compliance from its ratepayers.
National Ambient Air Quality Standards
In December 2014,October 2015, the ACC initiatedEPA released the final rule for the 8-hour Ozone NAAQS or Ozone Standard. The EPA lowered the standard from 75 parts per billion (ppb) to 70ppb. If Pima County does not meet the standard, the county will be designated as a new rulemaking proceeding that could result“non-attainment” area and will need to develop a plan to bring the air-shed into compliance. A “non-attainment” designation may slow economic growth in the eliminationregion and impact our ability to site new local generation.
Implementation of specific targeted savingsthe rule is scheduled as follows:
States’ recommendation of area designations (attainment, non-attainment, or unclassified) by October 2016.
EPA's response to states’ designation recommendation by June 2017.
EPA's finalization of area designations by October 2017, based on 2014-2016 air quality data.
Effluent Limitation Guidelines
In September 2015, as part of the Clean Water Act the EPA published the final Effluent Limitation Guidelines setting technology standards and instead treat EE aslimitations for steam electric power plant discharges. The rule sets the first federal limits on the levels of toxic metals in wastewater that can be discharged from power plants, based on technology improvements in the steam electric power industry over the last three decades. TEP is evaluating the effects of this rule on its facilities including Navajo, San Juan, and Four Corners. Since the majority of TEP's facilities are zero discharge, TEP does not anticipate a resourcesignificant financial impact.
TEP believes it is in material compliance with applicable laws and regulations. Refer to be evaluated through the ACC's integrated resource planning process.

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TEP’S UTILITY OPERATING STATISTICS         
 2014 2013 2012 2011 2010
Generation and Purchased Power – kWh (000)         
Remote Generation9,616,347
 10,586,972
 10,284,612
 10,005,127
 9,077,032
Local Tucson Generation864,949
 674,443
 803,146
 906,496
 1,492,885
Renewable Generation48,434
 38,206
 44,930
 28,049
 24,511
Purchased Power3,195,173
 2,328,581
 2,328,420
 2,686,918
 2,846,005
Total Generation and Purchased Power13,724,903
 13,628,202
 13,461,108
 13,626,590
 13,440,433
Less Losses and Company Use859,638
 885,026
 789,613
 822,220
 879,423
Total Energy Sold12,865,265
 12,743,176
 12,671,495
 12,804,370
 12,561,010
Sales – kWh (000)         
Residential3,726,982
 3,866,665
 3,820,637
 3,888,011
 3,869,540
Commercial2,169,897
 2,187,095
 2,187,617
 2,184,241
 2,171,694
Industrial2,098,229
 2,113,659
 2,132,214
 2,145,163
 2,138,749
Mining1,137,188
 1,079,150
 1,092,518
 1,083,071
 1,079,327
Other33,057
 32,350
 31,833
 31,621
 32,478
Total – Electric Retail Sales9,165,353
 9,278,919
 9,264,819
 9,332,107
 9,291,788
Electric Wholesale Sales- Long-Term617,502
 605,426
 657,740
 902,139
 987,957
Electric Wholesale Sales- Short-Term3,082,410
 2,858,831
 2,748,936
 2,570,124
 2,281,265
Total Electric Sales12,865,265
 12,743,176
 12,671,495
 12,804,370
 12,561,010
Operating Revenues ($000)         
Residential$409,964
 $400,999
 $387,840
 $383,908
 $372,212
Commercial261,813
 252,547
 247,157
 241,044
 233,567
Industrial170,436
 164,433
 166,739
 164,024
 159,937
Mining70,110
 65,094
 66,158
 65,720
 62,112
Other2,985
 2,809
 2,693
 2,601
 2,593
RES, DSM, ECA and LFCR54,837
 48,475
 45,292
 46,633
 37,767
Total – Electric Retail Sales970,145
 934,357
 915,879
 903,930
 868,188
Wholesale Revenue- Long-Term28,216
 26,203
 24,910
 41,056
 55,653
Wholesale Revenue- Short-Term113,575
 91,467
 71,257
 72,798
 71,435
California Power Exchange Provision for Wholesale Refunds
 
 
 
 (2,970)
Transmission16,532
 14,830
 15,793
 16,392
 20,863
Other Revenues141,433
 129,833
 133,821
 122,210
 112,098
Total Operating Revenues$1,269,901
 $1,196,690
 $1,161,660
 $1,156,386
 $1,125,267
Customers (End of Period)         
Residential374,204
 372,411
 369,480
 367,396
 366,217
Commercial38,079
 37,913
 37,672
 37,536
 37,215
Industrial604
 617
 632
 636
 635
Mining4
 4
 4
 4
 4
Other1,858
 1,857
 1,833
 1,814
 1,829
Total Retail Customers414,749
 412,802
 409,621
 407,386
 405,900
Average Retail Revenue per kWh Sold (cents)         
Residential11.0
 10.4
 10.2
 9.9
 9.6
Commercial12.1
 11.5
 11.3
 11.0
 10.8
Industrial and Mining7.4
 7.2
 7.2
 7.1
 6.9
Average Retail Revenue per kWh Sold (cents) (excludes RES, DSM, ECA and LFCR)10.0
 9.5
 9.4
 9.2
 8.9
Average Revenue per Residential Customer$1,096
 $1,077
 $1,050
 $1,045
 $1,016
Average kWh Sales per Residential Customer9,960
 10,383
 10,341
 10,583
 10,566
Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Environmental Laws and Regulations of this Form 10-K for additional information related to environmental laws and regulations impacting TEP's liquidity and capital resources and Liquidity and Capital Resources for TEP's forecasted environmental-related capital expenditures.

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ENVIRONMENTAL MATTERS
National Ambient Air Quality Standards
In November 2014, the EPA released a proposed rule that would revise the ozone National Ambient Air Quality Standards (NAAQS). The proposal revises the primary 8-hour NAAQS to within a range of 65-70 parts per billion (ppb), but the EPA is also taking comments on retaining the existing 75 ppb 8-hour standard or adopting an 8-hour standard as low as 60 ppb.
If the standard is ultimately revised below 70 ppb, Pima County and many other parts of the state would likely not be able to comply based on current ozone levels. Pima County and the State would then need to submit a plan to meet the revised standard which could potentially limit economic growth in the affected regions. TEP is currently analyzing the proposal and expects to file comments. The EPA is expected to finalize the rule by October 2015.
Hazardous Air Pollutant Requirements
The Clean Air Act requires the EPA to develop emission limit standards for hazardous air pollutants that reflect the maximum achievable control technology. In February 2012, the EPA issued final Mercury and Air Toxics Standards (MATS) rules to set the standards for the control of mercury emissions and other hazardous air pollutants from power plants.
Navajo
Based on the MATS rules, Navajo will require mercury control equipment by April 2016. TEP’s share of the estimated capital costs of this equipment is less than $1 million for mercury control. TEP expects its share of the annual operating costs for mercury control to be less than $1 million.
San Juan
TEP expects San Juan’s current emission controls to be adequate to comply with the MATS rules.
Four Corners
TEP expects Four Corners' current emission controls to be adequate to comply with the MATS rules.
Springerville Generating Station
Based on the MATS rules, Springerville Generating Station (Springerville) may require mercury emission control equipment by April 2016. The estimated capital cost of this equipment for Springerville Units 1 and 2 is about $5 million. TEP expects the annual operating cost of the mercury emission control equipment to be about $1 million. Estimated costs are split equally between the two units. TEP owns 49.5% of Springerville Unit 1 with the close of the lease option purchases in December 2014 and January 2015. With the completion of the purchases, Third-Party Owners are responsible for 50.5% of environmental costs attributed to Springerville Unit 1. TEP continues to be responsible for 100% of environmental costs attributable to Springerville Unit 2.
Sundt Generating Station
TEP expects the MATS rules will have an immaterial impact on capital or operating expenses at Sundt.
Regional Haze Rules
The EPA's Regional Haze Rules require emission controls known as Best Available Retrofit Technology (BART) for certain industrial facilities emitting air pollutants that reduce visibility in national parks and wilderness areas. The rules call for all states to establish goals and emission reduction strategies for improving visibility. States must submit these goals and strategies to the EPA for approval. BART applies to plants built between August 1962 and August 1977. Because Navajo and Four Corners are located on the Navajo Indian Reservation, they are not subject to state oversight; the EPA oversees regional haze planning for these power plants.
Complying with the EPA’s BART findings, and with other future environmental rules, may make it economically impractical to continue operating all or a portion of the Navajo, San Juan, and Four Corners power plants or for individual owners to continue to participate in the units they own at these power plants. TEP cannot predict the ultimate outcome of these matters.
Navajo
In August 2014, the EPA published the final Regional Haze Federal Implementation Plan (FIP) for Navajo. Among other things, the FIP calls for the shut-down of one unit or an equivalent reduction in emissions by 2020. The shutdown of one unit

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will not impact the total amount of energy delivered to TEP from Navajo. Additionally, the remaining Navajo participants would be required to install Selective Catalytic Reduction (SCR) or an equivalent technology on the remaining two units by 2030, and the current owners have to cease their operation of conventional coal-fired generation at Navajo no later than December 22, 2044. The Navajo Nation can continue operation after 2044 at its election. The final BART includes options that accommodate potential ownership changes at the plant. The plant has until December 2019 to notify the EPA which option will be implemented.
If SCR technology is ultimately implemented at Navajo, TEP estimates its share of the capital cost will be $28 million. Also, the installation of SCR technology at Navajo could increase the power plant's particulate emissions which may require that baghouses be installed. TEP estimates that its share of the capital expenditure for baghouses would be about $28 million. TEP's share of annual operating costs for SCR and baghouses is estimated at less than $1 million each.
San Juan
In October 2014, the EPA published a final rule approving a revised State Implementation Plan (SIP) covering BART requirements for San Juan. The SIP requires the closure of Units 2 and 3 by December 2017 and the installation of Selective Non-Catalytic Reduction (SNCR) on Units 1 and 4 by February of 2016. TEP owns 50% of Units 1 and 2 at San Juan. TEP expects its share of the cost to install SNCR technology on San Juan Unit 1 to be approximately $12 million. Additionally, the SIP approval references a New Source Review permit issued by the New Mexico Environment Department in November 2013 which, among other things, calls for balanced draft upgrades on San Juan Unit 1 to reduce particulate matter emissions. PNM, the operator of San Juan, is currently installing SNCR and making the necessary balanced draft modifications to San Juan Unit 1. TEP’s share of the balanced draft upgrades is expected to be approximately $25 million for a total of $37 million in capital expenditures. TEP's share of incremental annual operating costs for SNCR for San Juan Unit 1 is estimated at $1 million.
In connection with the implementation of the SIP revision and the early retirement of San Juan Units 2 and 3, some of the San Juan owner participants (Participants) have expressed a desire to exit their ownership in the plant. As a result, the Participants are attempting to negotiate a restructuring of the ownership in San Juan, as well as addressing the obligations of the exiting Participants for plant decommissioning, mine reclamation, environmental matters, and certain ongoing operating costs, among other items. The Participants have engaged a mediator to assist in facilitating the resolution of these matters among the Participants. The Participants of the affected units also may seek approvals of their utility commissions or governing boards. We are unable to predict the outcome of the negotiations and mediation.
Upon the early retirement of San Juan Unit 2, TEP will seek ACC approval to recover any unrecovered cost. TEP's 2013 Rate Case identified an excess of required generation depreciation reserves. As stipulated in the 2013 Rate Order, TEP will seek the ACC's authority to apply any excess generation depreciation reserves to the unrecovered book value of any early retirement of generation assets prior to seeking additional recovery. TEP expects the excess generation depreciation reserves to fully cover the costs associated with early retirement of Unit 2. At December 31, 2014, the net book value of TEP's share in San Juan Unit 2 was $110 million.
Four Corners
In 2012, the EPA finalized the regional haze FIP for Four Corners. The final FIP requires SCR technology to be installed on one unit by October 2016 and the remaining units by October 2017. In December 2013, APS (the operator) decided to shut down Units 1, 2, and 3 and install SCRs on Units 4 and 5. Under this scenario, the installation of SCR technology can be delayed until July 2018. TEP's estimated share of the capital costs to install SCR technology on Units 4 and 5 is approximately $35 million. TEP's share of incremental annual operating costs for SCR is estimated at $2 million.
Springerville
The BART provisions of the Regional Haze Rules requiring emission control upgrades do not apply to Springerville Units 1 and 2 since they were constructed in the 1980s which is after the time frame as designated by the rules. Other provisions of the Regional Haze Rules requiring further emission reduction are not likely to impact Springerville operations until after 2018.
Sundt
In July 2013, the EPA rejected the Arizona SIP determination that Sundt Unit 4 is not subject to the BART provisions of the Regional Haze Rule and developed a time-line to issue a federal implementation plan for emissions sources including Sundt Unit 4. TEP submitted a better-than-BART proposal in November 2013 which called for the elimination of coal as a fuel source at Sundt by the end of 2017. In June 2014, the EPA issued a final Regional Haze FIP for Arizona including BART requirements for Sundt. The final FIP would require TEP to either (i) install, by mid-2017, SNCR and dry sorbent injection (DSI) if Sundt Unit 4 continues to use coal as a fuel source, or (ii) permanently eliminate coal as a fuel source as a better-than-BART

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alternative by the end of 2017. TEP estimates that the cost to install SNCR and DSI would be approximately $12 million, and the incremental annual operating costs would be $5 million to $6 million. Under the rule, TEP is required to notify the EPA of its decision by March 2017. We expect to make a decision by early 2016 as part of our MATS compliance plan for Sundt. At December 31, 2014, the net book value of the Sundt coal handling facilities was $17 million. If retired early, we will request the ACC's approval to recover all the remaining costs of the coal handling facilities.
Greenhouse Gas Regulation
In June 2013, President Obama directed the EPA to move forward with carbon emission regulations for both new and existing fossil-fueled power plants.
In January 2014, the EPA published a re-proposed rule for new power plants. TEP does not anticipate that a final rule related to new fossil-fueled power plant sources will have a significant impact on its operations.
In June 2014, the EPA issued proposed carbon emission regulations for existing power plants called the Clean Power Plan. The Clean Power Plan targets a nation-wide reduction in carbon emissions of 30% by 2030. To achieve this goal, the proposed plan sets carbon emission rates for each state that must be achieved by an interim period of 2020-2029, with final emission rates by 2030. States can apply a variety of strategies to achieve the interim and final emission rates. Using 2012 as a baseline year, Arizona's carbon emission rate for 2030 represents a 52% reduction, most of which would be required by the interim emission rate requirement and could lead to the early retirement of coal generation in Arizona by 2020. The EPA expects to issue a final rule by the summer of 2015, and under the current proposal, states must file implementation plans by June 2016 or June 2017 for multi-state plans. In October 2014, the EPA issued a supplemental proposal regarding carbon emissions regulation impacting the Navajo Nation and the Four Corners and Navajo generating stations which are located on land leased from the Navajo Nation. The regulation, if implemented as proposed, will require carbon reductions on the Navajo Reservation; however, the reduction requirement is less than what is anticipated from unit retirements at the Four Corners and Navajo generating stations associated with Regional Haze requirements (see above).
TEP will continue working with federal and state regulatory authorities, other neighboring utilities, and stakeholders to seek relief from the proposed regulation by reducing the disproportionately high level of carbon emissions reduction for Arizona, and to seek relief from the interim and final proposed compliance requirements. On December 1, 2014, UNS Energy submitted comments on the proposal on behalf of TEP and its other utility subsidiaries. The EPA has received over 3.8 million comments in response to the proposed rule. The proposed rule has been challenged in court and is subject to further legal challenge. TEP cannot predict the ultimate outcome of these matters.
Coal Combustion Residuals Regulations
In December 2014, the EPA signed a final rule requiring all coal ash and other coal combustion residuals to be treated as a solid waste under Subtitle D of the Resource Conservation and Recovery Act (RCRA) while allowing for the continued recycling of coal ash. Subject to further review of the rule, we do not anticipate significant impacts to our existing facilities where coal combustion residuals are managed. However, additional requirements will apply to lateral expansions of those existing facilities or to any new facilities.

EMPLOYEES
At December 31, 2014,2015, TEP had 1,4481,478 employees, of which approximately 691688 were represented by the International Brotherhood of Electrical Workers (IBEW) Local No. 1116. A new collective bargaining agreement between the IBEW and TEP was entered into in January 20132016 and expires in January 2016.2019.


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EXECUTIVE OFFICERS OF THE REGISTRANT
Executive Officers, who are elected annually by TEP’s Board of Directors, acting at the direction of the Board of Directors of UNS Energy, are as follows:
Name Age Position(s) Held 
Executive
Officer Since
David G. Hutchens 48
 President and Chief Executive Officer 2007
Kevin P. Larson 58
 Senior Vice President and Chief Financial Officer 1997
Philip J. Dion 46
 Senior Vice President, Public Policy and Customer Solutions 2008
Kentton C. Grant 56
 Vice President and Treasurer 2007
Todd C. Hixon 48
 Vice President and General Counsel 2011
Karen G. Kissinger 60
 Vice President and Chief Compliance Officer 1991
Mark C. Mansfield 59
 Vice President, Energy Resources 2012
Frank P. Marino 50
 Vice President and Controller 2013
Thomas A. McKenna 66
 Vice President, Energy Delivery 2007
Catherine E. Ries 55
 Vice President, Human Resources and Information Technology 2007
Herlinda H. Kennedy 53
 Corporate Secretary 2006
David G. HutchensMr. Hutchens has served as Chief Executive Officer of TEP since 2014; President of TEP since 2011; Executive Vice President of TEP in 2011; Vice President of TEP from 2007-2011. Mr. Hutchens joined TEP in 1995.
Kevin P. LarsonMr. Larson has served as Senior Vice President and Chief Financial Officer of TEP since September 2005. Mr. Larson joined TEP in 1985 and thereafter held various positions in its finance department and investment subsidiaries. He was elected Vice President in March 1997. In October 2000, he was elected Vice President and Chief Financial Officer.
Philip J. DionMr. Dion has served as Senior Vice President, Public Policy and Customer Solutions of TEP since August 2013. Mr. Dion was named Vice President, Public Policy in April 2010. Mr. Dion joined TEP in February 2008 as Vice President of Legal and Environmental Services.
Kentton C. GrantMr. Grant was elected Treasurer in 2010 and has served as Vice President of TEP since January 2007. Mr. Grant joined TEP in 1995.
Todd C. HixonMr. Hixon has served as Vice President and General Counsel of TEP since May 2011. Mr. Hixon joined TEP’s legal department in 1998 and served in a variety of capacities, most recently serving as Associate General Counsel.
Karen G. KissingerMs. Kissinger has served as Vice President and Chief Compliance Officer of TEP since August 2013. Ms. Kissinger served as Vice President, Controller, and Chief Compliance Officer from 2001 to 2013. Ms. Kissinger joined TEP as Vice President and Controller in January 1991.
Mark C. MansfieldMr. Mansfield has served as Vice President, Energy Resources since 2012. He joined the company in 2008, most recently serving as Senior Director of Generation.
Frank P. MarinoMr. Marino has served as Vice President and Controller of TEP since August 2013. Mr. Marino joined TEP as Assistant Controller in January 2013. Prior to joining TEP, he served various roles at the AES Corporation, a global power company. In 2012 he served as AES' Vice President for Business Demand and Outsourcing Management, and from 2007-2011 he served as Chief Financial Officer for two different business units.
Thomas A. McKennaMr. McKenna has served as Vice President, Energy Delivery since August 2013. Mr. McKenna was named Vice President, Engineering in January 2007. Mr. McKenna joined an affiliate of TEP in 1998.
Catherine E. RiesMs. Ries has served as Vice President, Human Resources and Information Technology, since May 2011. Ms. Ries joined TEP as Vice President of Human Resources in June 2007.
Herlinda H. KennedyMs. Kennedy has served as Corporate Secretary of TEP since September 2006. Ms. Kennedy joined TEP in 1980 and was named assistant Corporate Secretary in 1999.

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SEC REPORTS AVAILABLE ON TEP'S WEBSITE
TEP makes available its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and all amendments to those reports as soon as reasonably practical after we electronically file or furnish them to the Securities and Exchange Commission (SEC). These reports are available free of charge through TEP’s website address at www.tep.com/about/investors/.
UNS Energy’s code of ethics, which applies to the Board of Directors and all officers and employees of UNS Energy and its subsidiaries, including TEP, and any amendments or any waivers made to the code of ethics, is also available on TEP’s website at www.tep.com/about/investors/.
TEP is providing the address of TEP’s website solely for the information of investors and does not intend the address to be an active link. Information contained at TEP’s website is not part of, or incorporated by reference into, any report or other filing filed with the SEC by TEP.

ITEM 1A. RISK FACTORS
The business and financial results of TEP are subject to a number of risks and uncertainties, including those set forth below. These risks and uncertainties fall primarily into five major categories: revenues, regulatory, environmental, financial, and operational.
REVENUES
National and local economic conditions can negatively affect the results of operations, net income, and cash flows at TEP.
Economic conditions have contributed significantly to a reduction in TEP’s retail customer growth and lower energy usage by the company’s residential, commercial, and industrial customers. As a result of weak economic conditions, TEP’s average retail customer base grew by less than 1% in each year from 20102011 through 20142015 compared with average increases of approximately 2%1% in each year from 2005 to 2009. TEP estimates that a 1% change in annual retail sales could impact pre-tax net income and pre-tax cash flows by approximately $6 million.
New technological developments and compliance with the ACC's Energy EfficiencyEE Standards and RES will continue to have a significant impact on retail sales, which could negatively impact TEP’s results of operations, net income, and cash flows.
Research and development activities are ongoing for new technologies that produce power or reduce power consumption. These technologies include renewable energy, customer-owned generation, and appliances, equipment, and control systems. FurtherContinued development and use of these technologies and compliance with the ACC's Energy Efficiency StandardEE Standards could negativelyfurther impact the results of operations, net income, and cash flows of TEP.
The revenues, results of operations, and cash flows of TEP are seasonal, and are subject to weather conditions and customer usage patterns, which are beyond the companies’company’s control.
TEP typically earns the majority of its operating revenue and net income in the third quarter because retail customers increase their air conditioning usage during the summer. Conversely, TEP’s first quarter net income is typically limited by relatively mild winter weather in its retail service territory. Cool summers or warm winters may reduce customer usage, adversely affecting operating revenues, cash flows, and net income by reducing sales.
TEP is dependent on a small segment of large customers for future revenues. A reduction in the electricity sales to these customers would negatively affect our results of operations, net income, and cash flows.
TEP sells electricity to mines, military installations, and other large industrial customers. In 2014,2015, 35% of TEP’s retail kWh sales were to 608592 industrial and mining customers. Retail sales volumes and revenues from these customer classes could

10



decline as a result of, among other things: global, national, and local economic conditions; curtailments of customer operations due to declines in commodity prices; decisions by the federal government to close military bases; the effects of EEenergy efficiency and DG;distributed generation; or the decision by customers to self-generate all or a portion of thetheir energy needs. A reduction in retail kWh sales to TEP’s large customers would negatively affect our results of operations, net income, and cash flows.

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REGULATORY
TEP is subject to regulation by the ACC, which sets the company’s Retail Rates and oversees many aspects of its business in ways that could negatively affect the company’s results of operations, net income, and cash flows.
The ACC is a constitutionally created body composed of five elected commissioners. Commissioners are elected state-wide for staggered four-year terms and are limited to serving a total of two terms. As a result, the composition of the commission, and therefore its policies, are subject to change every two years.
TEP’s Retail Rates consist of Base Rates and various rate adjustors that allow for timely recovery of certain costs between rate cases. The ACC is charged with setting retail electric ratesRetail Rates that provide electric utilities with an opportunityallow TEP to recover theirits costs of service and an opportunity to earn a reasonable rate of return. As part of the ACC’s process of establishing the retail electric rates charged by TEP,In setting TEP’s Retail Rates, the ACC could disallow the recovery of certain costs if deemed they were imprudently incurred.or not provide for the timely recovery of costs. The decisions made by the ACC on such matters impact the net income and cash flows of TEP.
Changes in federal energy regulation may negatively affect the results of operations, net income, and cash flows of TEP.
TEP is subject to the impact of comprehensive and changing governmental regulation at the federal level that continues to change the structure of the electric and gas utility industries and the ways in which these industries are regulated. TEP is subject to regulation by the FERC. The FERC has jurisdiction over rates for electric transmission in interstate commerce and rates for wholesale sales of electric power, including terms and prices of transmission services and sales of electricity at wholesale prices.wholesale.
As a result of the Energy Policy Act of 2005, owners and operators of bulk power systems, including TEP, are subject to mandatory transmission standards developed and enforced by NERC and subject to the oversight of the FERC. Compliance with modified or new transmission standards may subject TEP to higher operating costs and increased capital costs. Failure to comply with the mandatory transmission standards could subject TEP to sanctions, including substantial monetary penalties.
ENVIRONMENTAL
TEP is subject to numerous environmental laws and regulations that may increase its cost of operations or expose it to environmentally-related litigation and liabilities. Many of these regulations could have a significant impact on TEP due to its reliance on coal as its primary fuel for electric generation.
Numerous federal, state, and local environmental laws and regulations affect present and future operations. Those laws and regulations include rules regarding air emissions, water use, wastewater discharges, solid waste, hazardous waste, and management of coal combustion residuals.
These laws and regulations can contribute to higher capital, operating, and other costs, particularly with regard to enforcement efforts focused on existing power plants and new compliance standards related to new and existing power plants. These laws and regulations generally require us to obtain and comply with a wide variety of environmental licenses, permits, authorizations, and other approvals. Both public officials and private individuals may seek to enforce applicable environmental laws and regulations. Failure to comply with applicable laws and regulations may result in litigation, and the imposition of fines, penalties, and a requirement by regulatory authorities for costly equipment upgrades.
Existing environmental laws and regulations may be revised and new environmental laws and regulations may be adopted or become applicable to our facilities. Increased compliance costs or additional operating restrictions from revised or additional regulation could have an adverse effect on our results of operations, particularly if those costs are not fully recoverable from our customers. TEP’s obligation to comply with the EPA’s BARTBest Available Retrofit Technology (BART) determinations as a participant in the San Juan, Four Corners, and Navajo plants, coupled with the financial impact of future climate change legislation, other environmental regulations and other business considerations, could jeopardize the economic viability of these plants or the ability of individual participants to meet their obligations and willingness to continue their participation in these plants. TEP cannot predict the ultimate outcome of these matters.
TEP also is contractually obligated to pay a portion of the environmental reclamation costs incurred at generating stations in which it has a minority interest and is obligated to pay similar costs at the mines that supply these generating stations. While TEP has recorded the portion of its costs that can be determined at this time, the total costs for final reclamation at these sites are unknown and could be substantial.

Proposed federal
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Federal regulations to limitlimiting greenhouse gas emissions would, if adopted in the form proposed, result inrequire a shift in generation from coal to natural gas and renewable generation and could increase TEP's cost of operations.
In June 2014August 2015, the EPA proposed carbon emission standards to reduce greenhouse gasissued the Clean Power Plan (CPP) limiting CO2 emissions from existing and new fossil fueled power plants. EPA's proposalThe CPP establishes state-level CO2 emission rates and mass-based goals that apply to fossil fuel-fired generation. The plan requires CO2 emission reductions for Arizona would resultexisting facilities by 2030 and establishes interim goals that begin in 2022. The CPP will require a significant shift in generation from coal to natural gas and renewables and could

15




lead to the early retirement of coal generation in Arizona by 2020. The EPAwithin the 2022 to 2030 compliance time-frame. TEP will continue to work with the other Arizona and New Mexico utilities, as well as the appropriate regulatory agencies, to develop compliance strategies. TEP is scheduledunable to finalize those standards by summer 2015. These proposed regulations would, if adopted indetermine how the form proposed, result in a change infinal CPP rule will impact its facilities until the composition of TEP's generating fleet. As of 01/30/15, approximately 54% of TEP's generating capacity is fueled by coal. In 2014, approximately 68% of our total electricity resources were fueled by coal. The final rule issuedplans are developed and approved by the EPA could significantly impair the ability to operate certain of TEP's coal-fired generation plants on an economically viable basis or at all. A substantial change in TEP's generation portfolio could result in increased cost of operations and/or additional capital investments. The impact of final regulations to address carbon emissions will depend on the specific terms of those measures and cannot be determined at this time.EPA.
Early closure of TEP's coal-fired generation plants resulting from environmental regulations could result in TEP recognizing material impairments in respect of such plants and increased cost of operations if recovery of our remaining investments in such plants and the costs associated with such early closures were not permitted through rates charged to customers.
TEP's coal-fired generating stations may be required to be closed before the end of their useful lives in response to recent or future changes in environmental regulation, including potential regulation relating to greenhouse gas emissions. If any of the coal-fired generation plants, or coal handling facilities, from which TEP obtains power are closed prior to the end of their useful life, TEP could be required to recognize a materialan impairment of its assets and incur added expenses relating to accelerated depreciation and amortization, decommissioning, reclamation and cancellation of long-term coal contracts of such generating plants and facilities. Closure of any of such generating stations may force TEP to incur higher costs for replacement capacity and energy. TEP may not be permitted full recovery of these costs in the rates it charges its customers. As of December 31, 2015, approximately 49% of TEP's generating capacity is fueled by coal.
FINANCIAL
The third-party co-ownersThird-Party Owners of Springerville Unit 1 have and may failcontinue to refuse to pay some, or all, of their pro-rata share of the costs and expenses associated with Springerville Unit 1.
TEP owns 49.5% of Springerville Unit 1 and two separate third-parties own the remaining 50.5%. Starting in January 2015, TEP is obligated to operate Springerville Unit 1 for these Third-Party Owners under an existing facility support agreement.agreements. TEP and the Third-Party Owners disagree on several key aspects of this agreement,these agreements, including the allocation of Springerville Unit 1 operating and maintenance expenses, capital improvement costs, and transmission rights. In addition, insince late 2014 the Third-Party Owners have filed separate complaints at the FERC, and in New York State court, and with the American Arbitration Association that include allegations that TEP violated certain provisions of the facility support agreementgoverning agreements in relation to TEP’s operation of Springerville Unit 1. Because of these disagreements and the pending litigation, the Third-Party Owners have and may continue to refuse to pay some or all of their pro-rata share of such Springerville Unit 1 costs and expenses. As of December 31, 2015, TEP has billed the Third-Party Owners approximately $23 million for their pro-rata share of Springerville Unit 1 expenses and $4 million for their pro-rata share of capital expenditures, none of which had been paid as of February 17, 2016. The Third-Party Owners’ share of monthly fixed operatingestimated 2016 operations and maintenance costs for Springerville Unit 1 is approximately $1.5$27 million and their share of 2015estimated 2016 capital expenditures is approximately $7$9 million.
Volatility or disruptions in the financial markets, or unanticipated financing needs, could: increase our financing costs; limit our access to the credit markets; affect our ability to comply with financial covenants in our debt agreements; and increase our pension funding obligations. Such outcomes may adversely affect our liquidity and our ability to carry out our financial strategy.
We rely on access to the bank markets and capital markets as a significant source of liquidity and for capital requirements not satisfied by the cash flow from our operations. Market disruptions such as those experienced in 2008 and 2009 in the United States and abroad may increase our cost of borrowing or adversely affect our ability to access sources of liquidity needed to finance our operations and satisfy our obligations as they become due. These disruptions may include turmoil in the financial services industry, including substantial uncertainty surrounding particular lending institutions and counterparties we do business with, unprecedented volatility in the markets where our outstanding securities trade, and general economic downturns in our utility service territories. If we are unable to access credit at competitive rates, or if our borrowing costs dramatically increase, our ability to finance our operations, meet our short-term obligations, and execute our financial strategy could be adversely affected.
Changing market conditions could negatively affect the market value of assets held in our pension and other retiree plans and may increase the amount and accelerate the timing of required future funding contributions.

Plant
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Plant closings or changes in power flows into our service territory could require us to redeem or defease some or all of the tax-exempt bonds issued for our benefit. This could result in increased financing costs.
TEP has financed a substantial portion of utility plant assets with the proceeds of pollution control revenue bonds and industrial development revenue bonds issued by governmental authorities. Interest on these bonds is, subject to certain exceptions,

16




excluded from gross income for federal tax purposes. This tax-exempt status is based, in part, on continued use of the assets for pollution control purposes or the local furnishing of energy within TEP’s two-county retail service area.
As of 01/30/15,December 31, 2015, there were outstanding approximately $324$309 million aggregate principal amount of tax-exempt bonds that financed pollution control facilities at TEP’s generating units. Should certain of TEP’s generating units be retired and dismantled prior to the stated maturity dates of the related tax-exempt bonds, it is possible that some or all of the bonds financing such facilities would be subject to mandatory early redemption by TEP. AsOf the total amount outstanding, $37 million of 01/30/15,the principal amount of the bonds can currently be redeemed at par upon notice to holders, and $272 million principal amount of the bonds have early redemption dates or final maturities ranging from 2019 to 2022.
In addition, as of December 31, 2015, there were also outstanding approximately $371$307 million aggregate principal amount of tax-exempt bonds that financed local furnishing facilities. Depending on changes that may occur to the regional generation mix in the desert southwest, to the regional bulk transmission network, or to the demand for retail energy in TEP’s local service area, it is possible that TEP would no longer qualify as a local furnisher of energy within the meaning of the Internal Revenue Code. In recent years, reductions in retail demand in the winter months have made it increasingly difficult for TEP to continue to qualify as a local furnisher of electricity. If that were to occur,TEP could no longer qualify as a local furnisher of energy, all of TEP’s tax-exempt local furnishing bonds would be subject to mandatory early redemption by TEP or defeasance to the earliest possible redemption date. Of the total tax-exempt local furnishing bonds outstanding, $164$100 million aggregateof the principal amount isof the bonds can currently redeemablebe redeemed at par while the remainingupon notice to holders, and $207 million principal amount can be redeemed at par atof the respective bond'sbonds have early redemption datedates ranging from 2020 to 2023.
TEP’s net income and cash flows can be adversely affected by rising interest rates.
At December 31, 2014,2015, TEP had $215$137 million of tax-exempt variable rate debt obligations. The interest rates are set weekly or monthly. The average weekly interest rates (including Letters of Credit (LOCs) and remarketing fees) ranged from 1.40% to 1.75%0.93% - 1.42% in 2014.2015. The average monthly interest rates ranged from 0.85% to 0.95%0.79% - 0.87%. A 100 basis point increase in the average interest rates on this debt over a twelve-month period would increase TEP’s interest expense by approximately $2$1 million.
TEP is also subject to risk resulting from changes in the interest rate on its borrowings under the 2010 and 20142015 Credit Agreements.Agreement. Such borrowings may be made on a spread over London Interbank Offer Rate (LIBOR) or an Alternate Base Rate.
If capital market conditions result in risingshort-term interest rates rise, the resulting increase in the cost of variable rate borrowings would negatively impact our results of operations, net income, and cash flows.
The expected purchase of certain of Likewise, if capital market conditions result in higher long-term interest rates, TEP’s leased assets, as well as the cost of significant investments in TEP’s transmission system could require significant outlays of cash, which could be difficultborrowing costs would increase on any new long-term debt needed to finance.
In 2014, TEP committedfinance capital expenditures or to purchase the Springerville Coal Handling Facilities in April 2015 for a fixed price of $120 million. TEP also leases a 50% undivided interest in Springerville Common Facilities with primary lease terms ending in 2017 and 2021. Upon expiration of the Springerville Coal Handling and Common Facilities Leases, TEP has the obligation under agreements with the owners of Springerville Units 3 and 4 to purchase such facilities. Upon acquisition by TEP, the owner of Springerville Unit 3 has the option and the owner of Springerville Unit 4 has the obligation to purchase from TEP a 14% interest in the Common Facilities and a 17% interest in the Coal Handling Facilities.refinance existing long-term debt.
OPERATIONAL
The operation of electric generating stations, and transmission and distribution systems, involves risks that could result in reduced generating capability or unplanned outages that could adversely affect TEP’s results of operations, net income, and cash flows.
The operation of electric generating stations, and transmission and distribution systems, involves certain risks, including equipment breakdown or failure, fires, weather, and other hazards, interruption of fuel supply, and lower than expected levels of efficiency or operational performance. Unplanned outages, including extensions of planned outages due to equipment failure or other complications, occur from time to time and are an inherent risk of our business. If TEP’s generating stations and transmission and distribution systems operate below expectations, TEP’s operating results could be adversely affected.
The operation of the San Juan Generating Stationaffected and/or TEP's capital spending could be adversely affected if the Participants are unable to secure an economic long-term coal supply.
In connection with the implementation of environmental requirements and the associated retirement of San Juan units 2 and 3, some of the San Juan owner participants (Participants) have expressed a desire to exit their ownership in the plant. As a result, the Participants are attempting to negotiate a restructuring of their San Juan ownership. The current coal supply contract for San Juan expires on December 31, 2017. The Participants have agreed that prior to executing a binding restructuring agreement, the remaining Participants will need to have greater certainty regarding the cost and availability of fuel for San Juan after December 31, 2017. TEP and other San Juan owners are currently negotiating agreements concerning the future San Juan fuel supply. If the Participants are unable to negotiate an economic fuel supply, the continued operation of San Juan could be

17




jeopardized resulting in the retirement of San Juan Unit 1 earlier than expected. At December 31, 2014, the net book value of TEP's investment in San Juan Unit 1 is $96 million.increased.
TEP receives power from certain generating facilities that are jointly owned and operated by third parties. Therefore, TEP may not have the ability to affect the management or operations at such facilities which could adversely affect TEP’s results of operations, net income, and cash flows.
Certain of the generating stations from which TEP receives power are jointly owned with, or are operated by, third parties. TEP may not have the sole discretion or any ability to affect the management or operations at such facilities. As a result of this reliance on other operators, TEP may not be able to ensure the proper management of the operations and maintenance of the plants. Further, TEP may have no ability or a limited ability to make determinations on how best to manage the changing regulations which may

13




affect such facilities. In addition, TEP will not have sole discretion as to how to proceed in the face of requirements relating to environmental compliance which could require significant capital expenditures or the closure of such generating stations. A divergence in the interests of TEP and the co-owners or operators, as applicable, of such generating facilities could negatively impact the business and operations of TEP.
We may be subject to physical attacks.
As operators of critical energy infrastructure, we may face a heightened risk of physical attacks on our electric systems. Our electric generation, transmission, and distribution assets and systems are geographically dispersed and are often in rural or unpopulated areas which make them especially difficult to adequately detect, defend from, and respond to such attacks.
If, despite our security measures, a significant physical attack occurred, we could have our operations disrupted, property damaged, experience loss of revenues, response costs, and other financial loss; and be subject to increased regulation, litigation, and damage to our reputation, any of which could have a negative impact on our business and results of operations.
We may be subject to cyber attacks.
We may face a heightened risk of cyber attacks. Our information and operations technology systems may be vulnerable to unauthorized access due to hacking, viruses, acts of war or terrorism, and other causes. Our operations technology systems have direct control over certain aspects of the electric system and, in addition, our utility business requires access to sensitive customer data, including personal and credit information, in the ordinary course of business.
If, despite our security measures, a significant cyber breach occurred, we could have our operations disrupted, property damaged, and customer information stolen; experience loss of revenues, response costs, and other financial loss; and be subject to increased regulation, litigation, and damage to our reputation, any of which could have a negative impact on our business and results of operations.

ITEM 1B. UNRESOLVED STAFF COMMENTS
None.

ITEM 2. PROPERTIES
Transmission facilities owned by TEP and by third parties are located in Arizona and New Mexico and transmit the output from TEP’s electric generating stations at Four Corners, Navajo, San Juan, Springerville, Gila River, and Luna to the Tucson area for use by TEP’s retail customers. The transmission system is interconnected at various points in Arizona and New Mexico with other regional utilities. TEP has arrangements with approximately 140 companies to interchange generation capacity and for the transmission of energy. See Part I, Item 1. Business, TEP, Generating and Other Resources.General for additional information regarding the transmission facilities.
At December 31, 2014, TEP owned or participated in an overhead electric transmission and distribution system consisting of:
564 circuit-miles of 500-kV lines;
1,110 circuit-miles of 345-kV lines;
408 circuit-miles of 138-kV lines;
465 circuit-miles of 46-kV lines; and
2,600 circuit-miles of lower voltage primary lines.

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TEP’s underground electric distribution system includes 4,461 cable-miles of lines. TEP owns approximately 77% of the poles on which its lower voltage lines are located. Electric substation capacity consists of 106 substations with a total installed transformer capacity of 15,809,050 kilovolt amperes.
TheTEP's electric generating stations (except as noted below), administrative headquarters, warehouses and service centers are located on land owned by TEP. The electric distribution and transmission facilities owned by TEP are located:
on property owned by TEP;
under or over streets, alleys, highways, and other places in the public domain, as well as in national forests and state lands, under franchises, easements, or other rights which are generally subject to termination;
under or over private property as a result of easements obtained primarily from the record holder of title; or
over American Indian reservations under grant of easement by the Secretary of the Interior or lease by American Indian tribes.
It is possible that some of the easements, and the property over which the easements were granted, may have title defects or liens existing at the time the easements were acquired.
Springerville is located on property held by TEP under a long-term surface ownership agreementterm patent with the State of Arizona. TEP, under separate sale and leaseback arrangements, leases a 50% undivided interest in the Springerville Common Facilities (which do not include land).
Four Corners and Navajo are located on properties held under easements from the United States and under leases from the Navajo Nation. TEP, individually and in conjunction with PNM in connection with San Juan, has acquired land rights, easements and leases for the plant, transmission lines and a water diversion facility located on land owned by the Navajo

14




Nation. TEP also has acquired easements for transmission facilities related to San Juan, Four Corners, and Navajo acrosslocated on reservation lands of the Zuni, Navajo, and Tohono O’odham American Indian Reservations.Nations. TEP, in conjunction with PNM and Samchully Power & Utilities 1 LLC, holds an undivided ownership interest in the property on which Luna is located.
TEP’s rights under these various easements and leases may be subject to defects such as:
possible conflicting grants or encumbrances due to the absence of, or inadequacies in, the recording laws or record systems of the Bureau of Indian Affairs (BIA) and the American Indian tribes;
possible inability of TEP to legally enforce its rights against adverse claimants and the American Indian tribes without Congressional consent; or
failure or inability of the American Indian tribes to protect TEP’s interests in the easements and leases from disruption by the U.S. Congress, Secretary of the Interior, or other adverse claimants.
These possible defects have not interfered, and are not expected to materially interfere, with TEP’s interest in and operation of its facilities.
TEP, under separate sale and leaseback arrangements, leased the following generation facilities (which do not include land):
Springerville Unit 1 which expired in January 2015;
Springerville Coal Handling Facilities; and
a 50.0% undivided interest in the Springerville Common Facilities.
Under separate ground lease agreements, TEP leased parcels of land for the following photovoltaic facilities:
The Solar Zone in two areas, Area J and Area B, of the University of Arizona Tech Park in Pima County, Arizona; and
Bright Tucson Community Solar Blocks in Pima County, Arizona.
In December 2014, TEP placed in service an additional photovoltaic facility in Cochise County, Arizona, for which TEP entered into a 30-year easement agreement. The easement is to facilitate the operations of a solar photovoltaic renewable energy generation system on behalf of the Department of the Army, located at Fort Huachuca in Cochise County.
SeeItem 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations, Springerville Unit 11. Business, General and Note 5 of Notes to Consolidated Financial Statements.for additional information regarding generating facilities.

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ITEM 3. LEGAL PROCEEDINGS
Springerville Unit 1 Proceedings
Upon the termination of the Springerville Unit 1 Leases on January 1, 2015, 50.5% of Springerville Unit 1, or 195 MW of capacity, continued to be owned by third parties, i.e. Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee under a separate trust agreement with each of the remaining two owner participants, Alterna Springerville LLC (Alterna) and LDVF1 TEP LLC (LDVF1) (Alterna and LDVF1, together with the Owner Trustees and Co-trustees, the Third-Party Owners). TEP is not obligated to purchase any of the Third-Party Owners’ Springerville Unit 1 power.
Commencing on January 1, 2015, with the termination of the leases, TEP is obligated to operate the unit for the Third-Party Owners under an existing facility support agreement.agreements. In 2014, TEP and the Third-Party Owners engaged in discussions regarding the post-lease operation of Springerville Unit 1 and related cost sharing arrangements, but did not reach agreement on several key points.
OnIn November 7, 2014, the Springerville Unit 1 Third-Party Owners filed a complaint (FERC Action) against TEP at the FERC alleging that TEP had not agreed to wheel power and energy for the Third-Party Owners in the manner specified in the existing Springerville Unit 1 facility support agreement between TEP and the Third-Party Owners and for the cost specified by the Third-Party Owners. The Third-Party Owners requested an order from the FERC requiring such wheeling of the Third-Party Owners’ energy from their Springerville Unit 1 interests after the leases terminatebeginning in January 2015 to the locationsPalo Verde switchyard and for the price specified by the Third-Party Owners. On December 3, 2014, TEP filed an answer to the FERC Action denying the allegations and requesting that the FERC dismiss the complaint. OnIn February 19, 2015, the FERC issued an order denying the Third-Party Owners complaint. In March 2015, the Third-Party Owners filed a request for rehearing in the FERC Action, which the FERC denied in October 2015. In December 2015, the Third-Party Owners appealed the FERC’s order denying the Third-Party Owners' complaint to the U.S. Court of Appeals for the Ninth Circuit. In December 2015, TEP filed an unopposed motion to intervene in the Ninth Circuit appeal.
On December 19, 2014, the Third-Party Owners filed a complaint (New York Action) against TEP in the Supreme Court of the State of New York, New York County alleging,(New York Action). In response to motions filed by TEP to dismiss various counts and compel arbitration of certain of the matters alleged, and the court’s subsequent ruling on the motions, the Third-Party Owners have amended the complaint three times, dropping certain of the allegations and raising others in the New York Action and in the arbitration proceeding described below. As amended, the New York Action alleges, among other things, that TEP has refused to comply with the Third-Party Owners instructions to schedule power and energy to which they are entitled in respect of their undivided interest after the leases terminate on January 1, 2015, that TEP failed to comply with their instructions to specify the level of fuel and fuel handling services effective January 1, 2015, that TEP has failed to properly operate, maintain, and make capital investments in Springerville Unit 1 during the term of the leases and that TEP has breached

15




the lease transaction documents by refusing to pay certain of the Third-Party Owners’ claimed expenses. The third amended complaint seeks $71 million in liquidated damages and direct and consequential damages in an amount to be determined at trial. The Third-Party Owners have also agreed to stay their claim that TEP has not agreed to wheel power and energy inas required pending the manner required by the facility support agreement as set forth inoutcome of the FERC Action andAction. In November 2015, the Third-Party Owners filed a motion for summary judgment on their claim that TEP has breached fiduciary duties claimedfailed to be owed to the Third-Party Owners. The New York Action seeks declaratory judgments, injunctive relief, damages in an amount to be determined at trial andpay certain of the Third-Party Owners’ feesclaimed expenses.
In December 2014 and expenses.
On December 22, 2014,January 2015, Wilmington Trust Company, as Owner Trustees and Lessors under the leases of the Third-Party Owners, sent a notice to TEP referencing the New York Action, stating that the New York Action allegesalleged that TEP has disaffirmed or repudiated certain of its obligations under the lease transaction documents and that such disaffirmances and repudiations constitute events of defaulthad defaulted under the Third-Party Owners’ leases. The notice states that the owner trustees, as lessors, are exercising their rights to keep the undivided interests idle and demanding that TEP pay, on January 1, 2015, liquidated damages totaling approximately $71 million. The notice also states that any rights to exercise additional remedies or assert additional events of default are preserved. In a letter to Wilmington Trust Company dated December 29, 2014, TEP denied the allegations in the notice. In January 2015, Wilmington Trust Company sent a second notice to TEP that alleges that TEP has defaulted under the Third-Party Owners’ leases by not remediating the defaults alleged in the first notice. The second notice repeated the demandnotices demanded that TEP pay liquidated damages totaling approximately $71 million. In a letterletters to Wilmington Trust Company,the Owner Trustees, TEP denied the allegations in the second notice.notices.
In April 2015, TEP filed a demand for arbitration with the American Arbitration Association (AAA) seeking an award of the Owner Trustees and Co-Trustees' share of unreimbursed expenses and capital expenditures for Springerville Unit 1. In June 2015, the Third-Party Owners filed a separate demand for arbitration with the AAA alleging, among other things, that TEP has failed to properly operate, maintain and make capital investments in Springerville Unit 1 since the leases have expired. The Third-Party Owners’ arbitration demand seeks declaratory judgments, damages in an amount to be determined by the arbitration panel and the Third-Party Owners’ fees and expenses. TEP and the Third-Party Owners have since agreed to consolidate their arbitration demands into one proceeding. In August 2015, the Third-Party Owners filed an amended arbitration demand adding claims that TEP has converted the Third-Party Owners’ water rights and certain emission reduction payments and that TEP is improperly dispatching the Third-Party Owners’ unscheduled Springerville Unit 1 power and capacity. In October 2015, the arbitration panel granted TEP’s motion for interim relief, ordering the Owner Trustees and Co-Trustees to pay TEP their pro-rata share of unreimbursed expenses and capital expenditures for Springerville Unit 1 during the pendency of the arbitration. The arbitration panel also denied the Third-Party Owners’ motion for interim relief which had requested that TEP be enjoined from dispatching the Third-Party Owners’ unscheduled Springerville Unit 1 power and capacity. TEP has been scheduling, when economical, the Third-Party Owners’ entitlement share of power from Springerville Unit 1, as permitted under the Springerville Unit 1 facility support agreement, since June 14, 2015. The arbitration hearing is scheduled for July 2016.
In November 2015, TEP filed a petition to confirm the interim arbitration order in the Supreme Court of the State of New York naming the Owner Trustee and Co-Trustee as respondents. The petition seeks an order from the court confirming the interim arbitration order under the Federal Arbitration Act. In December 2015, the Owner Trustees filed an answer to the petition and a cross-motion to vacate the interim arbitration order.
As of December 31, 2015, TEP has billed the Third-Party Owners approximately $23 million for their pro-rata share of Springerville Unit 1 expenses and $4 million for their pro-rata share of capital expenditures, none of which had been paid as of February 17, 2016.
TEP believes that it has fully complied with all of its obligations undercannot predict the two Third-Party Owner leases and the other lease transaction agreements, denies that it has disaffirmed or repudiated any of its obligations under the lease transaction documents, denies that anyoutcome of the amounts claimed as damages areclaims relating to Springerville Unit 1, and, due deniesto the allegation that eventsgeneral and non-specific scope and nature of default have arisen under such leases and denies that the lessors are entitled to exercise remedies under such leases.claims, TEP cannot determine estimates of the range of loss, if any, at this time. TEP intends to vigorously defend itself against the claims asserted by the Third-Party Owners.Owners and to vigorously pursue the claims it has asserted against the Owner Trustees and Co-Trustees.
TEP and the Third-Party Owners have agreed to stay these litigation matters relating to Springerville Unit 1 in furtherance of settlement negotiations. However, there is no assurance that a settlement will be reached or that the litigation will not continue.
See Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K and Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Factors Affecting Results of Operations for additional information regarding Springerville Unit 1.In addition, see Note 6 of Notes to Consolidated Financial Statements - Contingencies.

ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.


2016



PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES
Stock TradingMarket Information
TEP’s common stock is wholly-owned by UNS Energy and is not listed for trading on any stock exchange.
Dividends
TEP paid dividends to UNS Energy of $50 million in 2015 and $40 million in 2014 $40 million in 2013, and $30 million in 2012.2013.
TEP can pay dividends if it maintains compliance with the 2014 Credit Agreement, the 2010its 2015 Credit Agreement, the 2010 Reimbursement Agreement, and the 2013 Covenants Agreement which all contain substantially the same financial covenants, and the terms of the Merger order issued by the ACC in August 2014.covenants. At December 31, 2014,2015, TEP was in compliance with the terms of all financial covenants and agreementsagreements.
The ACC's approval of the acquisition of UNS Energy by Fortis, in August 2014, contained a condition restricting subsidiary dividend payments to UNS Energy by TEP to no more than 60 percent of TEP's annual net income for the earlier of five years or until such time that TEP's equity capitalization reaches 50 percent of total capital as accounted for in accordance with GAAP. The ratios used to determine the dividend restrictions will be calculated for each calendar year and reported to the Merger order.ACC annually beginning on April 1, 2016. As of December 31, 2015, TEP's dividend payments were still restricted as the 50 percent of total capital threshold had not yet been reached.

ITEM 6. SELECTED FINANCIAL DATA
 2014 2013 2012 2011 2010
 Thousands of Dollars
Income Statement Data         
Operating Revenues$1,269,901
 $1,196,690
 $1,161,660
 $1,156,386
 $1,125,267
Net Income102,338
 101,342
 65,470
 85,334
 108,260
Balance Sheet Data         
Total Utility Plant – Net$3,425,190
 $2,944,455
 $2,750,421
 $2,650,652
 $2,410,077
Total Investments in Lease Debt and Equity
 36,194
 45,457
 65,829
 103,844
Other Investments and Other Property37,599
 33,488
 35,091
 32,313
 43,588
Total Assets4,232,422
 3,563,285
 3,461,046
 3,277,661
 3,078,411
          
Long-Term Debt$1,372,414
 $1,223,070
 $1,223,442
 $1,080,373
 $1,003,615
Non-Current Capital Lease Obligations69,438
 131,370
 262,138
 352,720
 429,074
Common Stock Equity1,215,779
 925,923
 860,927
 824,943
 709,884
Total Capitalization$2,657,631
 $2,280,363
 $2,346,507
 $2,258,036
 $2,142,573
Cash Flow Data         
Net Cash Flows From Operating Activities$313,663
 $346,191
 $267,919
 $268,294
 $302,483
Capital Expenditures(507,070) (252,848) (252,782) (351,890) (277,309)
Other Investing Cash Flows(10,568) (6,814) 24,901
 39,879
 24,273
Net Cash Flows From Investing Activities(517,638) (259,662) (227,881) (312,011) (253,036)
Net Cash Flows From Financing Activities252,810
 (140,937) 11,987
 51,452
 (51,882)
Ratio of Earnings to Fixed Charges (1)
2.56
 2.67
 2.10
 2.40
 2.74
(in thousands)2015 2014 2013 2012 2011
Income Statement Data         
Operating Revenues$1,306,544
 $1,269,901
 $1,196,690
 $1,161,660
 $1,156,386
Net Income127,794
 102,338
 101,342
 65,470
 85,334
Balance Sheet Data         
Total Utility Plant, Net$3,558,229
 $3,425,190
 $2,944,455
 $2,750,421
 $2,650,652
Total Assets (1)
4,249,478
 4,119,830
 3,490,085
 3,413,638
 3,247,647
          
Long-Term Debt, Net (1)
$1,451,720
 $1,361,828
 $1,213,367
 $1,213,246
 $1,072,037
Non-Current Capital Lease Obligations55,324
 69,438
 131,370
 262,138
 352,720
Cash Flow Data         
Net Cash Flows From Operating Activities$364,934
 $313,663
 $346,191
 $267,919
 $268,294
Net Cash Flows From Investing Activities(502,891) (517,638) (259,662) (227,881) (312,011)
Net Cash Flows From Financing Activities119,471
 252,810
 (140,937) 11,987
 51,452
Other Data         
Ratio of Earnings to Fixed Charges (2)
3.74
 2.56
 2.67
 2.10
 2.40
(1)
Total Assets and Long-term Debt, Net were adjusted to reflect the reclassifications made as a result of the recently adopted accounting pronouncements. See Note 1 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding recently adopted accounting pronouncements.
(2) 
For purposes of this computation, earnings are defined as pre-tax earnings from continuing operations before minority interest, or income/loss from equity method investments, plus interest expense and amortization of debt discount and expense related to indebtedness. Fixed charges are interest expense, including amortization of debt discount, interest on operating lease payments, and expense on indebtedness, including capital lease obligations.
See Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.Operations for additional information.


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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Management’s Discussion and Analysis explains the results of operations, the general financial condition, and the outlook for TEP. It includes the following:
outlook and strategies;
operating results during 20142015 compared with the same periods of 2013,2014, and 20132014 compared with 2012;2013;
factors affecting our results and outlook;
liquidity, capital needs, capital resources, and contractual obligations;
dividends; and
critical accounting estimates.

TEP is a vertically integrated, regulated utility that generates, transmits and distributes electricity to approximately 415,000 retail electric customers in a 1,155 square mile area in southeastern Arizona.
Management’s Discussion and Analysis includes financial information prepared in accordance with generally accepted accounting principles (GAAP)Generally Accepted Accounting Principles in the U.S.United States of America (GAAP), as well as certain non-GAAP financial measures. The non-GAAP financial measures should be viewed as a supplement to, and not a substitute for, financial measures presented in accordance with GAAP. Non-GAAP financial measures as presented herein may not be comparable to similarly titled measures used by other companies.
Management’s Discussion and Analysis should be read in conjunction with Item 6 of this Form 10-K and the Consolidated Financial Statements and Notes in Item 8 of this Form 10-K. For information on factors that may cause our actual future results to differ from those we currently seek or anticipate, see Forward-Looking Information at the front of this report and Part I, Item 1A. Risk Factors for additional information.
References in Item 1A.this report to "we" and "our" are to TEP.

OUTLOOK AND STRATEGIES
TEP's financial prospects and outlook are affected by many factors including: global, national, regional, and local economic conditions; volatility in the financial markets; environmental laws and regulations; and other regulatory factors. Our plans and strategies include the following:
Achieving a constructive outcome in our pending rate case proceeding that provides TEP recovery of its full cost of service and an opportunity to earn an appropriate return on its rate base investments, updated rates to provide more accurate price signals and a more equitable allocation of costs to TEP's customers, and enables TEP to continue to provide safe and reliable service.
Continuing to focus on our long-term generation resource strategy, including shifting from coal to natural gas, renewables, and energy efficiency while providing rate stability for our customers, mitigating environmental impacts, complying with regulatory requirements, and leveraging our existing utility infrastructure.infrastructure, and maintaining financial strength.
Developing strategic responses to new environmental regulations and potential new legislation, including proposednew carbon emission standards to reduce greenhouse gas emissions from existing power plants. We are evaluating TEP's existing mix of generation resources and defining steps to achieve environmental objectives that protect the financial stability of our utility business and the interests of our customers.
Strengthening the underlying financial condition of TEP by achieving constructive regulatory outcomes, improvingstrengthening our capital structure, andsustaining our credit ratings, and promoting economic development in our service territory.
Focusing on our core utility business through operational excellence, investing in utility rate base, emphasizing customer service, and maintaining a strong community presence.
Developing strategic responses to the evolving utility business that includes renewable energy, DG, and EE that protect the financial stability of our business while providing benefits and choices to our customers.


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2015 Operational and Financial Highlights
The year ended December 31, 2015 included the following notable items:
In January 2015, TEP purchased an additional 24.8% undivided ownership interest in Springerville Unit 1, bringing its total ownership interest to 49.5%;
In January 2015, TEP purchased existing unsecured tax-exempt industrial development revenue bonds in the amount of $130 million using funds borrowed from the term loan portion of the 2014 Credit Agreement;
In February 2015, TEP issued and sold $300 million of unsecured notes;
In April 2015, TEP purchased an additional 86.7% undivided ownership interest in the Springerville Coal Handling Facilities, and in May 2015, TEP sold a 17.05% undivided ownership interest in the Springerville Coal Handling Facilities to SRP;
In June 2015, TEP terminated the 2014 Credit Agreement;
In June 2015, TEP received an equity contribution of $180 million from UNS Energy;
In October 2015, TEP entered into a new unsecured credit agreement (2015 Credit Agreement) that provides for a $250 million revolving credit and letter of credit (LOC) facility. The new credit agreement matures in 2020 and replaces the 2010 Credit Agreement;
In November 2015, TEP filed a general rate case with the ACC that requests, among other things, a Base Rate increase of $110 million. The application also requests that new rates become effective no later than January 1, 2017; and
In December 2015, TEP completed construction and placed into service a 500-kV transmission line extending from the Pinal Central substation to TEP’s Tortolita substation northwest of Tucson.

RESULTS OF OPERATIONS
The following discussion provides the significant items that affected TEP's results of operations for the years ended December 31, 2015, 2014 2013 and 2012.2013. The significant items affecting net income are presented on an after-tax basis.
2015 compared with 2014
TEP reported net income of $128 million in 2015 compared with $102 million in 2014. The increase of $26 million, or 25%, was primarily due to:
$16 million in lower O&M resulting primarily from acquisition related costs and outages at Springerville Units 1 and 2 that were incurred in 2014, partially offset by higher O&M related to Gila River, labor costs, and outside services;
$6 million in higher transmission revenue resulting primarily from an increase in sales volume on favorably priced contracts; and
$4 million in lower interest expense primarily due to a reduction in the balance of capital lease obligations.
2014 compared with 2013
TEP reported net income of $102 million in the year ended December 31, 2014 compared with net income of $101 million in the year ended December 31, 2013. The following factors affected the period over period changeincrease of $1 million, or 1%, was primarily due to:
$25 million in TEP’s results. All amounts are presented on an after-tax basis:
a $22 million increase in retail marginhigher revenues due toincluding a non-fuel base rateBase Rate increase that was effective on July 1, 2013, and a $6 millionan increase in LFCR revenues, recordedhigher long-term wholesale revenues due in 2014;part to an increase in the average market price and higher transmission revenue; and
a $7$7 million decrease in lower interest expense, primarily due to a reduction in the balance of capital lease obligations. See Note 5 of the Notes to Consolidated Financial Statements;
a $2 millionThe increase in the margin on long-term wholesale sales, due in part to an increase in the average market price for wholesale power; and
a $1 million increase in transmission revenue;was partially offset byby:
an $11$22 million increase in Basehigher O&M for retail customer bill credits approved by the ACC as a condition of the Merger;
a $7 million increase in Base O&M for merger-related expenses including acquisition transaction fees and the acceleration of share-based compensation expense;
a $4 million increase in Base O&M exclusive of bill credits and merger-related expenses. The increase results primarily fromrelated costs, higher generating plant maintenance expense, and increased rent expense associated with the Navajo lease amendment. See Note 6 of Notes to Consolidated Financial Statements;amendment;

a $4
19



$5 million increase in depreciation and amortization expenses, resulting primarily from an increase in asset base in the current year; and
a $5 million increase inhigher income taxes resulting from an effective tax rate variance primarily generated by a non-recurring $11 million tax benefit recorded in June 2013 to recover previously recorded income tax expense as a result of the 2013 TEP Rate Order. This amount is partially offset by a $2 million increase in the valuation allowance in 2013 and a $3 million increase in investment tax credits recorded in 2014. See Note 1112 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information regarding income taxes; and
2013 compared with 2012
TEP reported net income of $101$4 million in 2013 compared with net income of $65 million in 2012. The following factors affected the period over period change in TEP’s results. All amounts are presented on an after-tax basis:
a $25 million increase in retail margin revenueshigher depreciation and amortization expenses, resulting primarily due to a non-fuel base rate increase that was effective on July 1, 2013, and favorable weather during 2013 compared with 2012. Favorable weather conditions contributed to a 0.2% increase in retail kWh sales during 2013;
a $9 million decrease in income taxes, resulting from an effective tax rate variance primarily generated by a non-recurring $11 million tax benefit related to a regulatory asset recorded in June 2013 to recover previously recorded income tax expense through future rates as a result of the 2013 TEP Rate Order. See Note 11 of Notes to Consolidated Financial Statements;
a $5 million decrease in interest expense due to a reduction in the balance of capital lease obligations;
a $3 million increase in income as a result of the 2012 write-off of a portion of the planned Tucson to Nogales transmission line;
a $2 million increase in income related to the operation of Springerville Units 3 and 4. An unplanned outage at Springerville Unit 3 negatively affected results in 2012; and
a $1 million increase in the margin on long-term wholesale sales due in part to an increase in asset base in the market price for wholesale power; partially offset bycurrent year.

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a $4 million increase in Base O&M for merger-related expenses recorded in December 2013;
a $4 million increase in Base O&M, exclusive of merger-related costs, due in part to higher planned and unplanned generating plant maintenance expense;
a charge of $2 million recorded to fuel and purchased energy expense resulting from the 2013 TEP Rate Order; and
a $2 million increase in taxes other than income taxes due in part to an increase in property tax rates and higher asset balances.

24



Utility Sales and Revenues
The table below provides a summary of retail kWh sales, revenues, and weather data during 2015, 2014 2013 and 2012:2013:
Year Ended Increase (Decrease) Year Ended Increase (Decrease)Year Ended Increase (Decrease) Year Ended Increase (Decrease)
2014 2013 
Percent(1)
 2012 
Percent(1)
2015 2014 
Percent(1)
 2013 
Percent(1)
Energy Sales, kWh (in Millions):         
Electric Retail Sales:         
Electric Retail Sales (kWh in millions)         
Residential3,727
 3,867
 (3.6)% 3,821
 1.2 %3,724
 3,727
 (0.1)% 3,867
 (3.6)%
Commercial2,170
 2,187
 (0.8)% 2,187
  %2,124
 2,170
 (2.1)% 2,187
 (0.8)%
Industrial2,098
 2,114
 (0.8)% 2,132
 (0.9)%2,063
 2,098
 (1.7)% 2,114
 (0.8)%
Mining1,137
 1,079
 5.4 % 1,093
 (1.2)%1,109
 1,137
 (2.5)% 1,079
 5.4 %
Public Authorities33
 32
 3.1 % 32
 1.6 %33
 33
  % 32
 3.1 %
Total Electric Retail Sales9,165
 9,279
 (1.2)% 9,265
 0.2 %9,053
 9,165
 (1.2)% 9,279
 (1.2)%
Retail Margin Revenues (in Millions):         
Retail Margin Revenues (in millions)         
Residential$280
 $271
 3.3 % $248
 9.3 %$281
 $280
 0.4 % $271
 3.3 %
Commercial188
 181
 3.9 % 171
 5.9 %185
 188
 (1.6)% 181
 3.9 %
Industrial104
 97
 7.2 % 93
 5.4 %103
 104
 (1.0)% 97
 7.2 %
Mining38
 34
 11.8 % 30
 11.5 %38
 38
  % 34
 11.8 %
Public Authorities2
 2
  % 2
 5.9 %2
 2
  % 2
  %
Total by Customer Class612
 585
 4.6 % 544
 7.7 %609
 612
 (0.5)% 585
 4.6 %
LFCR Revenues11
 2
 450.0 % 
 NM
12
 11
 9.1 % 2
 *
Total Retail Margin Revenues (Non-GAAP)(2)
623
 587
 6.1 % 544
 7.9 %
DSM Performance Bonus3
 2
 50.0 % 1
 100.0 %
Other Retail Margin Revenues5
 1
 *
 
 *
Total Retail Margin Revenues (Non-GAAP) (1)
629
 626
 0.5 % 588
 6.5 %
Fuel and Purchased Power Revenues303
 300
 1.0 % 327
 (8.1)%344
 303
 13.5 % 300
 1.0 %
RES, DSM and ECA Revenues44
 47
 (6.4)% 45
 4.4 %
DSM and RES Surcharge Revenues49
 41
 19.5 % 46
 (10.9)%
Total Retail Revenues (GAAP)$970
 $934
 3.9 % $916
 2.0 %$1,022
 $970
 5.4 % $934
 3.9 %
Average Retail Margin Rate (Cents / kWh):(1)
         
Average Retail Margin Rate (Cents / kWh) (2)
         
Residential7.51
 7.02
 7.0 % 6.50
 8.0 %7.55
 7.51
 0.5 % 7.02
 7.0 %
Commercial8.66
 8.28
 4.6 % 7.82
 5.9 %8.71
 8.66
 0.6 % 8.28
 4.6 %
Industrial4.96
 4.61
 7.6 % 4.33
 6.5 %4.99
 4.96
 0.6 % 4.61
 7.6 %
Mining3.34
 3.14
 6.4 % 2.78
 12.9 %3.43
 3.34
 2.7 % 3.14
 6.4 %
Public Authorities6.06
 5.56
 9.0 % 5.34
 4.1 %5.61
 6.06
 (7.4)% 5.56
 9.0 %
Total Average Retail Margin Rate Excluding LFCR6.68
 6.30
 6.0 % 5.87
 7.3 %
Average LFCR Rate0.12
 0.02
 500.0 % 
 NM
Total Average Retail Margin Rate Including LFCR6.80
 6.31
 7.8 % 5.87
 7.5 %
Average Fuel and Purchased Power Revenues3.31
 3.24
 2.2 % 3.52
 (8.0)%
Average RES, DSM and ECA Revenues0.48
 0.52
 (7.7)% 0.49
 6.1 %
Total Average Retail Revenues10.59
 10.07
 5.2 % 9.88
 1.9 %
         
Weather Data:
 
 
 
 
Total Average Margin Rate by Customer Class6.73
 6.68
 0.7 % 6.30
 6.0 %
Total Average Retail Margin Rate (3)
6.95
 6.80
 2.2 % 6.31
 7.8 %
Average Fuel and Purchased Power Rate3.80
 3.31
 14.8 % 3.24
 2.2 %
Average DSM and RES Rate0.54
 0.48
 12.5 % 0.52
 (7.7)%
Total Average Retail Rate11.29
 10.59
 6.6 % 10.07
 5.2 %
Weather Data
 
 
 
 
Cooling Degree Days                  
Year Ended December 31,1,557
 1,631
 (4.5)% 1,556
 4.8 %1,576
 1,557
 1.2 % 1,631
 (4.5)%
10-Year Average1,515
 1,491
 NM
 1,484
 NM
1,520
 1,515
 *
 1,491
 *
Heating Degree Days                  
Year Ended December 31,930
 1,449
 (35.8)% 1,201
 20.6 %1,072
 930
 15.3 % 1,449
 (35.8)%
10-Year Average1,335
 1,404
 NM
 1,394
 NM
1,317
 1,335
 *
 1,404
 *
* Not meaningful
(1)
Calculated on un-rounded data and may not correspond exactly to data shown in table.
(2) 
Retail Margin Revenues, a non-GAAP financial measure, should not be considered as an alternative to Total Retail Revenues, which is determined in accordance with GAAP. Retail Margin Revenues exclude: (i) revenues collected from retail customers that are directly offset by expenses recorded in other line items; and (ii) revenues collected from third parties that are unrelated to kWh sales to retail customers. We believe the change in Retail Margin Revenues between periods provides useful information because it

2521



directly offset by expenses recorded in other line items; and (ii) revenues collected from third parties that are unrelated to kWh sales to retail customers. We believe the change in Retail Margin Revenues between periods provides useful information because it demonstrates the underlying revenue trend and performance of our core utility business. Retail Margin Revenues represents the portion of retail operating revenues from kWh sales, LFCR Revenues, DSM Performance Bonus, and LFCRcertain other retail margin revenues available to cover the non-fuel operating expenses of our core utility business.
(2)
Calculated on un-rounded data and may not correspond exactly to data shown in table.
(3)
Total Average Retail Margins Rates include revenues related to LFCR Revenues, DSM Performance Bonus, and Other Retail Margin Revenues included in the Total Retail Margin Revenues.
Retail Revenues were higher in 2015 compared with 2014 primarily due to the increase in the PPFAC rate and higher Retail Margin Revenues. Retail Margin Revenues were higher primarily due to higher LFCR revenues, DSM Performance Bonus, and Other Retail Margin Revenues related to adjustor mechanisms.
Retail Revenues were higher in 2014 compared with 2013
Residential
Residential kWh sales were 3.6% lower primarily due to higher Retail Margin Revenues and increased LFCR revenues. The increase in 2014 due in part to fewer cooling degree days compared with 2013. ARetail Margin Revenues resulted from a non-fuel base rateBase Rate increase effective July 1, 2013,2013. These increases were partially offset by lower sales volumes, led to an increase in residential margin revenues of 3.3%, or $9 million. The average number of residential customers grew by 0.5% in 2014 compared with 2013.
Commercial
Commercial kWh sales decreased by 0.8% compared with 2013. Lower sales volumes were offset by a non-fuel base rate increase effective July 1, 2013 which contributed to an increase in commercial margin revenues of 3.9%, or $7 million.
Industrial
Industrial kWh sales decreased by 0.8% compared with 2013. Lower sales volumes were offset by a non-fuel base rate increase effective July 1, 2013, which led to an increase in industrial margin revenues of 7.2% or $7 million.
Mining
Mining kWh sales increased by 5.4% compared with 2013, which can be attributed to an expansion by one of TEP's mining customers. The increased kWh sales as well as a non-fuel base rate increase effective July 1, 2013 led to an increase in margin revenues from mining customers of 11.8%, or $4 million. See Factors Affecting Results of Operations, Sales to Mining Customers.
2013 compared with 2012
Residential
Residential kWh sales were 1.2% higher in 2013 due in part to favorable weather conditions compared with 2012. A non-fuel base rate increase effective July 1, 2013 and higher sales volumes led to an increase in residential margin revenues of 9.3%, or $23 million. The average number of residential customers grew by 0.7% in 2013 compared with 2012.
Commercial
Commercial kWh sales were the same when compared with 2012. A non-fuel base rate increase effective July 1, 2013 contributed to an increase in commercial margin revenues of 5.9%, or $10 million.
Industrial
Industrial kWh sales decreased by 0.9% compared with 2012. Lower salesvolume due to certain customers changing their usage patterns were more than offset by a non-fuel base rate increase effective July 1, 2013, which led to an increase in industrial margin revenues of $4 million.milder weather.
Mining
Mining kWh sales decreased by 1.2% compared with 2012. One of TEP's mining customers performed maintenance on its facilities resulting in a temporary decrease in production. A non-fuel base rate increase effective July 1, 2013 led to an increase in margin revenues from mining customers of 11.5%, or $4 million.

26



Wholesale Sales and Transmission Revenues
 Year Ended December 31,
 2014 2013 2012
 Millions of Dollars
Long-Term Wholesale Revenues:     
Long-Term Wholesale Margin Revenues (Non-GAAP)(1)
$10
 $7
 $5
Fuel and Purchased Power Expense Allocated to Long- Term Wholesale Revenues18
 19
 20
Total Long-Term Wholesale Revenues28
 26
 25
Transmission Revenues16
 15
 16
Short-Term Wholesale Revenues114
 92
 70
Electric Wholesale Sales (GAAP)$158
 $133
 $111
 Year Ended December 31,
(in millions)2015 2014 2013
Long-Term Wholesale Revenues$36

$28
 $26
Transmission Revenues27
 16
 15
Short-Term Wholesale Revenues104
 114
 92
Total Electric Wholesale Sales$167
 $158
 $133
(1)
Long-term Wholesale Margin Revenues, a non-GAAP financial measure, should not be considered as an alternative to Electric Wholesale Sales, which is determined in accordance with GAAP. We believe the change in Long-Term Wholesale Margin Revenues between periods provides useful information because it demonstrates the underlying profitability of TEP’s long-term wholesale sales contracts. Long-Term Wholesale Margin Revenues represents the portion of long-term wholesale revenues available to cover the operating expenses of our core utility business.
Long-Term Wholesale Margin Revenues increased by $8 million, or 29%, in 2015 compared with 2014 primarily due to new wholesale agreements partially offset by unfavorable wholesale market prices. Transmission Revenues increased by $11 million, or 69%, in 2015 compared with 2014 primarily due to a new long-term transmission agreement with UNS Electric related to Gila River and contract renewals resulting in favorable pricing.
Long-Term Wholesale Revenues increased by $2 million, or 8%, in 2014 were higher when compared with 2013 primarily due in part to higherfavorable market prices for wholesale power. There were no significant changes in transmission revenues in 2014 compared to 2013.
Short-Term Wholesale Revenues
AllThe majority of revenues from short-term wholesale sales are related to ACC jurisdictional assets and 10% of the profits from wholesale trading activity are credited against the fuel and purchased power costs eligible for recovery in the PPFAC.
Other Revenues
Year Ended December 31,Year Ended December 31,
2014 2013 2012
Millions of Dollars
Revenue related to Springerville Units 3 and 4(1)
$112
 $102
 $101
(in millions)2015 2014 2013
Springerville Units 3 and 4 Revenue (1)
$91
 $112
 $102
Other Revenue29
 28
 33
27
 29
 28
Total Other Revenue$141
 $130
 $134
$118
 $141
 $130
(1) 
Represents revenues and reimbursements from Tri-State, the lessee of Springerville Unit 3, and SRP, the owner of Springerville Unit 4, to TEP related to the operation of these plants.
In addition to reimbursements related to Springerville Units 3 and 4, TEP’s other revenues include inter-company revenues from its affiliates, UNS Gas, Inc., an indirect wholly-owned subsidiary of UNS Energy, (UNS Gas) and UNS Electric, for corporate services provided by TEP, and miscellaneous service-related revenues such as rent on power pole attachments, damage claims, and customer late fees. See Note 45 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information regarding related party transactions.
There were no significant changes in Other Revenue in 2015 compared with 2014, as well as no significant changes in Other Revenue in 2014 compared with 2013.

2722



Operating Expenses
Generating Output and Fuel and Purchased Power Expense
TEP’s fuel and purchased power expense and energy resources for 2015, 2014, 2013, and 20122013 are detailed below:
 Generation and Purchased Power Fuel and Purchased Power Expense
 2014 2013 2012 2014 2013 2012
 Millions of kWh Millions of Dollars
Coal-Fired Generation9,271
 10,254
 9,702
 $232
 $273
 $247
Gas-Fired Generation1,210
 1,007
 1,435
 60
 46
 65
Utility Owned Renewable Generation48
 38
 45
 
 
 
Reimbursed Fuel Expense for Springerville Units 3 and 4
 
 
 5
 7
 7
Total Generation10,529
 11,299
 11,182
 298
 326
 319
Total Purchased Power3,195
 2,329
 2,328
 153
 112
 80
Transmission and Other PPFAC Recoverable Costs
 
 
 18
 12
 6
Increase (Decrease) to Reflect PPFAC Recovery Treatment
 
 
 (11) (12) 31
Subtotal13,724
 13,628
 13,510
 $457
 $438
 $436
Less Line Losses and Company Use(859) (885) (839)      
Total Energy Sold12,865
 12,743
 12,671
      
Generation
Total generating output decreased in 2014 when compared with 2013 primarily resulting from outages at Springerville and Sundt generating stations. Coal-fired generation decreased by 9.5% in 2014, primarily due to using natural gas to fuel Sundt Unit 4 instead of coal.
The table below summarizes average fuel cost per kWh generated or purchased:
 2014 2013 2012
 cents per kWh
Coal2.50
 2.66
 2.54
Gas4.99
 4.57
 4.54
Purchased Power4.79
 4.83
 3.44
All Sources3.64
 3.54
 3.19
O&M
The table below summarizes the items included in O&M expense. Base O&M includes $34 million of merger-related expenses and retail customer bill credits in 2014 and $6 million of merger-related expenses in 2013.
 2014 2013 2012
 Millions of Dollars
Base O&M (Non-GAAP)(1)
$281
 $246
 $234
O&M Recorded in Other Expense(9) (7) (6)
Reimbursed Expenses Related to Springerville Units 3 and 484
 70
 72
Expenses Related to Customer Funded Renewable Energy and DSM Programs(2)
23
 26
 35
Total O&M (GAAP)$379
 $335
 $335
 Generation and Purchased Power (kWh) Fuel and Purchased Power Expense
(in millions)2015 2014 2013 2015 2014 2013
Coal-Fired Generation8,584
 9,271
 10,254
 $209
 $232
 $273
Gas-Fired Generation2,723
 1,210
 1,007
 91
 60
 46
Utility Owned Renewable Generation65
 48
 38
 
 
 
Reimbursed Fuel Expense for Springerville Units 3 and 4 (1)

 
 
 5
 5
 7
Total Generation11,372
 10,529
 11,299
 305
 297
 326
Total Purchased Power3,079
 3,195
 2,329
 125
 153
 112
Transmission and Other PPFAC Recoverable Costs
 
 
 25
 18
 12
Increase (Decrease) to Reflect PPFAC Recovery Treatment
 
 
 40
 (11) (12)
Total Generation and Purchased Power14,451
 13,724
 13,628
 $495
 $457
 $438
Less Line Losses and Company Use(719) (859) (885)      
Total Energy Sold13,732
 12,865
 12,743
      
(1) 
Base O&MSpringerville Unit 3 and 4 Fuel Expense is a non-GAAP financial measurereimbursed by Tri-State and should not be considered as an alternative to O&M, which is determined in accordance with GAAP. TEP believes that Base O&M, which is O&M less reimbursed expenses and expensesSRP.
Fuel and Purchased Power Expense increased by $38 million, or 8%, in 2015 compared with 2014 primarily due to an increase in the PPFAC charge and additional generation and transmission costs associated with Gila River Unit 3. The increase was partially offset by favorable purchased power costs (see table below) and decreased coal generation at Springerville Unit 1 as a result of the lease expiration in January 2015.
Fuel and Purchased Power Expense increased by $19 million, or 4%, in 2014 compared with 2013 primarily due to the increase in purchased power volumes resulting from outages at Springerville and Sundt generating stations in 2014. The increase was partially offset by a decrease in generation expense as a result of the outages.
See the table below for information on the average fuel cost of generated and purchased kWh:
(cents per kWh)2015 2014 2013
Coal2.44
 2.50
 2.66
Gas3.35
 4.99
 4.57
Purchased Power4.05
 4.79
 4.83
All Sources3.31
 3.64
 3.54
Operations and Maintenance Expense
The table below summarizes the items included in Operations and Maintenance (O&M) expense:
(in millions)2015 2014 2013
Reimbursed Expenses - Springerville Units 3 and 4 (1)
$65
 $84
 $70
Reimbursed Expenses - Customer Funded Renewable Energy and
DSM Programs (2)
25
 23
 26
Other Operating and Maintenance Expense (3)
255
 272
 239
Total Operations and Maintenance Expense$345
 $379
 $335
(1)
Expenses related to customer-funded renewable energySpringerville Units 3 and DSM programs, provides useful information because it represents the fundamental level of operating and maintenance expense related to our core business.4 are reimbursed with corresponding amounts recorded in other revenue.
(2) 
These expenses are being collected from customers and the corresponding amounts are recorded in retail revenue.
(3)
The Third-Party Owners' share of expenses related to Springerville Unit 1 is included in Other Operating and Maintenance Expense.

2823



The table below summarizes TEP’s pensionOperating and other retiree benefitMaintenance expenses includeddecreased by $34 million, or 9%, in Base2015 compared with 2014. Springerville Units 3 and 4 expenses, which are reimbursed by third party owners, decreased primarily due to outages incurred in 2014. Other Operating and Maintenance Expense decreased primarily due to acquisition related costs and outages at Springerville Units 1 and 2 that occurred in 2014, partially offset by higher O&M:&M related to Gila River, labor costs and outside services.
 2014 2013 2012
 Millions of Dollars
Pension Expense Charged to O&M$6
 $10
 $10
Retiree Benefit Expense Charged to O&M5
 5
 5
Total$11
 $15
 $15
Operating and Maintenance expenses increased by$44 million, or 13%, in 2014 compared with 2013. Springerville Units 3 and 4 expenses, which are reimbursed by third party owners, increased primarily due to outages incurred in 2014. Other Operating and Maintenance Expense increased primarily due to acquisition related costs and outages at Springerville Units 1 and 2 that occurred in 2014.

FACTORS AFFECTING RESULTS OF OPERATIONS
20132015 Rate Case
In November 2015, TEP Rate Orderfiled a general rate case with the ACC to: (i) update and improve its rate design and tariffs to provide more accurate price signals and a more equitable allocation of its fixed costs to its customers; (ii) provide TEP with an opportunity to recover its full cost of service, including an appropriate return on its rate base investments; and (iii) enable TEP to continue to provide safe and reliable service. The rate application is based on a test year ended June 30, 2015. The filing requests that new rates be implemented by January 1, 2017.
The 2013 TEP Rate Order, issued bykey provisions of the ACC and effective July 1, 2013, provided for rate case include:
a non-fuel retail Base Rate increase of $76$110 million, or 12%, compared with adjusted test year revenues;
a 7.34% return on original cost rate base of $2.1 billion;
a capital structure for rate making purposes of approximately 50% common equity and 50% long-term debt;
a cost of equity of 10.35% and an authorized average cost of debt of 4.32%;
a request to apply excess depreciation reserves against the unrecovered net book value (NBV) of San Juan Unit 2 and the Sundt Coal Handling Facilities due to early retirement;
a request for authority to begin using the Third-Party Owners' portion of Springerville Unit 1 that is available to TEP for dispatch to serve retail customer needs and to recover the related operating costs through the PPFAC; and
rate of return of 7.26%design changes that would reduce the reliance on the Original Cost Rate Base (OCRB) of $1.5 billion,volumetric sales to recover fixed costs, and a 0.68% return onnew net metering tariff that would ensure that customers who install distributed generation pay an equitable price for their electric service.
TEP cannot predict the fair value incrementoutcome of this proceeding or whether its rate base (the fair value increment of rate base represents the difference between OCRB and Fair Value Rate Base (FVRB) of approximately $800 million).
In addition, there are provisions within the 2013 TEP Rate Order allowing more timely recovery of certain costs through several recovery mechanisms:
The LFCR mechanism allows recovery of certain non-fuel costs related to kWh sales lost due to EE programs and DG.
The Environmental Compliance Adjustor (ECA) mechanism allows recovery of certain capital carrying costs to comply with government-mandated environmental regulations between rate cases.
The DSM and RES surcharges allow for recovery of costs to implement DSM and renewable energy programs that support the ACC's EE Standards.
As requiredrequest will be adopted by the 2013 Rate Order, TEP filed a compliance reportACC in July 2014 that outlined its planned purchases of: (i) certain ownership interestswhole or in Springerville Unit 1; (ii) 75% of Gila River Unit 3; and (iii) the Springerville Coal Handling Facilities. The report estimated that as a result of these purchases, and the termination of certain lease obligations, TEP's 2014 non-fuel revenue requirement would decline by approximately $36 million. However, when other changes to TEP's rate base, expenses and retail sales levels were considered, TEP estimated a non-fuel revenue deficiency of approximately $26 million as of December 31, 2014.
See Note 2of Notes to Consolidated Financial Statementsfor more information.part.
Generating Resources
At December 31, 2014,2015, approximately 57%49% of TEP's generating capacity was fueled by coal. In January 2015, following the purchase of the final Springerville Unit 1 leased interest of 96 MW, and the expiration of the remaining 195 MW of Springerville Unit 1 leased capacity, TEP's coal-fired generating capacity dropped to 54% of total capacity. Existing and proposed federal environmental regulations, as well as potential changes in state regulation, may increase the cost of operating coal-fired generating facilities. TEP is implementing coal reductionexecuting strategies and evaluating additional steps for reducingto reduce its dependency on coal generation.
In August 2015, TEP exhausted its existing coal supply at Unit 4 of the proportion of coal in itsH. Wilson Sundt Generating Station (Sundt Unit 4). Currently, TEP is operating Sundt Unit 4 on natural gas as a primary fuel mix. source.
TEP's ability to further reduce its coal-fired generating capacity will depend on several factors, including, but not limited to:
Regulatory approvals associated with the closure of San Juan Unit 2, and pending ownership restructuringThe impact of the remaining units, see Item 1 - Environmental Matters;
Clean Power Plan on current coal-fired generating facilities; and
The outcome ofability to resolve Springerville Unit 1 legal proceedings relating to the proposed Clean Power Plan, seeThird-Party Owners Item 1 - Environmental Matters; and.
See Part I, Item 1. Business, General for additional information regarding TEP's option to permanently convert Sundt Unit 4 to be fueled by natural gas, seegenerating facilities Item 1 - Environmental Matters..

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Springerville Unit 1
TEP leased Unit 1 of the Springerville Generating Station and an undivided one-half interest in certain Springerville Common Facilities (collectively Springerville Unit 1) under seven separate lease agreements (Springerville Unit 1 Leases) that were accounted for as capital leases. The leases expired in January 2015 resulting in TEP owning a 49.5% undivided interest.2015. At December 31, 2014, TEP's ownership interest was 24.7%, or 96 MW.

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In 2006, TEP purchased a 14.1% undivided ownership interest in Springerville Unit 1, representing approximately 55 MW of capacity. In December 2014, TEP purchased a 10.6% leased interest in Springerville Unit 1, representing 41 MW of capacity, for $20 million. In January 2015,that time, TEP purchased a leased interest comprising 24.8% of Springerville Unit 1, representing 96 MW of capacity, for an aggregate purchase price of $46 million. Following this purchase, TEP owns 49.5% of Springerville Unit 1, or 192 MW of capacity.
The remaining 50.5% of Springerville Unit 1, or 195 MW of capacity, continues to beis owned by third parties.Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee under a separate trust agreement with each of the remaining two owner participants, Alterna Springerville LLC (Alterna) and LDVF1 TEP LLC (LDVF1) (Alterna and LDVF1, together with the Owner Trustees and Co-trustees, the Third-Party Owners). TEP is not obligated to purchase any of the Third-Party Owners’ generating output. With the expiration of the leases in January 2015, TEP is obligated to operate the unit for the Third-Party Owners. The Third-Party OwnersOwner Trustees and Co-Trustees are obligated to compensate TEP for their pro rata share of expenses for the unit inunit. TEP estimates the amountThird-Party Owners’ share of approximately $1.52016 operations and maintenance expense will be $27 million per month, and their estimated share of 2016 capital expenditures which are approximately $7 million in 2015.will be $9 million.
In 2014,April 2015, TEP filed a demand for arbitration seeking an award of the Owner Trustees and Co-Trustees' share of unreimbursed expense and capital expenditures for Springerville Unit 1. In October 2015, the arbitration panel granted TEP’s motion for interim relief, ordering the Owner Trustees and Co-Trustees to pay TEP their pro-rata share of unreimbursed expenses and capital expenditures for Springerville Unit 1 during the pendency of the arbitration. The arbitration panel also denied the Third-Party Owners’ motion for interim relief which had requested that TEP be enjoined from dispatching the Third-Party Owners’ unscheduled Springerville Unit 1 power and capacity. TEP has been scheduling, when economical, the Third-Party Owners’ entitlement share of power from Springerville Unit 1, as permitted under the Springerville Unit 1 facility support agreement, since June 14, 2015. As of December 31, 2015, TEP has billed the Third-Party Owners engaged in discussions regarding the post-lease operation of Springerville Unit 1 and related cost sharing arrangements, but did not reach agreement on several key points. As of 01/30/15, TEP has requested pre-funding for operations from the Third-Party Owners of approximately $5$23 million for their pro-rata share of Springerville Unit 1 operatingexpenses and maintenance expenses and$4 million for their pro-rata share of capital costs,expenditures, none of which hashad been paid as of February 19, 2015.17, 2016.
See Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K and Part I, Item 3. Legal Proceedings for a description ofadditional information regarding the legal proceedings relating to the Third-Party Owners.
TEP replaced the 195 MW of expired leased capacity with the purchase of Gila River Unit 3. See Gila River Generating Station Unit 3, below.
Gila River Generating Station Unit 3
On December 10, 2014, TEP and UNS Electric acquired Gila River Unit 3, a gas-fired combined cycle unit with a nominal capacity rating of 550 MW located in Gila Bend, Arizona, from a subsidiary of Entegra Power Group LLC. TEP purchased a 75% undivided interest in Gila River Unit 3 (413 MW) for $164 million, and UNS Electric purchased the remaining 25% undivided interest. TEP’s interest in Gila River Unit 3 will replace the expired coal-fired leased capacity from Springerville Unit 1 and the expected reduction of coal-fired generating capacity from San Juan Unit 2 and is a key component in TEP's strategy to diversify its generation fuel mix.
See Note 7 of Notes to Consolidated Financial Statements and Item 7. Management's Discussion and Analysis of Financial Condition and Factors Affecting Results of Operations, Gila River Generating Station Unit 3.
Potential Plant Retirements
TEP periodically files anTEP's 2014 Integrated Resource Plan (IRP) with, which was acknowledged by the ACC. The IRP provides a view of forecasted energy needs over a long term (15 years) and options being consideredACC in April 2015, reflected plans to meet those needs. TEP's 2014 IRP reflects a portfolio diversification strategy that includes reducingreduce its overall coal capacity over the next five years at the Springerville, San Juan, and Sundt Generating Stations.by 492 MW (32% of TEP's planning assumptions includeexisting coal fleet) by 2018. TEP's 2014 IRP included retiring certain coal-fired generating facilities at San Juan Generating Station (San Juan) and coal handling facilities at the H. Wilson Sundt Generating Station (Sundt) earlier than their current estimated useful lives. These facilities currently do not have the requisite emission control equipment to meet proposed EPAEnvironmental Protection Agency (EPA) regulations. TEP continuesplans to evaluate the potential need to retire early these coal-fired generating facilities. The 2013 TEP Rate Order stipulates that in any filing related to the early retirement of a generation asset, TEP would seek ACC approval to apply any then-existing excess generation depreciation reserve to the unrecovered book value of the retiring assets. TEP would then seek regulatory recovery for any remaining amounts that would not otherwise be otherwise recovered if and when any such assets are retired. TEP plans to file a preliminary IRP in March 2016 and is required to file its next IRP by April 2017.
See Part I, Item 1 -1. Business, Environmental Matters.Matters for additional information regarding the impact of environmental matters on plant operations.
Springerville Coal Handling Facilities Capital Lease Purchase Commitment
TEP leasespreviously leased interests in the coal handling facilities at the Springerville Generating Station (Springerville Coal Handling Facilities) under two separate lease agreements (Springerville Coal Handling Facilities Leases). The lease agreements havehad an initial term that expiresexpired in April 2015 and provideprovided TEP the option to renew the leases or to purchase the leased interests at the aggregate fixed price of $120 million.
In April 2014,2015, TEP notified the owner participants and their lessors that TEP has electedexercised its option to purchase theirthe facilities.
Upon the expiration of the lease term, TEP purchased an 86.7% undivided ownership interestsinterest in the Springerville Coal Handling Facilities atbringing TEP's total ownership interest to 100%. With the fixed purchase price of $120 million upon the expirationcompletion of the lease term in April 2015. Due to TEP’s purchase commitment, in April 2014, TEP recorded an increase to both Utility Plant Under Capital Leases and Current Obligations Under Capital Leases on its balance sheet in the amount of $109 million, which represented the present value of the total purchase commitment.

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Upon TEP’s purchase, SRP iswas obligated to buy a portion of17.05% undivided interest in the Springerville Coal Handling Facilities from TEP for approximately $24 million andmillion. This transaction was completed in May 2015. Tri-State, is obligated to eithereither: 1) buy a portion of17.05% undivided interest in the facilities for approximately $24 million or 2) continue to make payments to TEP for the use of the facilities. Tri-State has until April 2016 to exercise its purchase option.
Sales to Mining Customers
Some of TEP's largest mining customers have indicated they arecustomer is taking initial steps to increasecurtail production either through expansion of their current mining operations or by the re-opening of non-operational mine sites. If efforts to increase production are successful, TEP's mining load could increase over the next several years. The market price for copper and the ability to obtain necessary permits could affect mining industry expansion plans.
In additionin 2016 due to the decline in commodity prices. TEP cannot predict the extent to which this customer will curtail production, how long commodity prices will remain low, or the

25



total impact the prices will have on mining production in the future. At December 31, 2015, mining customers that TEP currently serves, themade up 8% of TEP's total electric sales.
The proposed Rosemont Copper Mine near Tucson, Arizona is in the final stages of permitting.permitting stage. If the Rosemont Copper Mine is constructed and reaches full production, it would be expected towill become TEP's largest retail customer with TEP serving the mine'san estimated load of approximately 85 MW.
TEP cannot predict if or when existing mines will expand operations or new or re-opened mines will commence operations.
Springerville Units 3 and 4
TEP receives annual benefits in the form of rental payments and other fees and cost savings from operating Springerville Unit 3 on behalf of Tri-State and Unit 4 on behalf of SRP.
The table below summarizes the income statement line items in which TEP records revenues and expenses related to Springerville Units 3 and 4:
 Year Ended December 31,
 2014 2013 2012
 Millions of Dollars
Other Revenues$112
 $102
 $101
Fuel Expense(5) (7) (7)
O&M Expense(84) (69) (72)
Taxes Other Than Income Taxes(1) (2) (1)
120 MW.
Interest Rates
See Part II, Item 7A. Quantitative and Qualitative Disclosures about Market Risk.for information regarding interest rate risks and its impact on earnings.
Fair Value Measurements
See Note 10 of Notes to Consolidated Financial Statements.

LIQUIDITY AND CAPITAL RESOURCES
Liquidity
Cash flows may vary during the year, with cash flowflows from operations typically the lowest in the first quarter and highest in the third quarter due to TEP’s summer peaking load. As a result of the varied seasonal cash flow, TEPwe will use, as needed, itsour revolving credit facility to assist in funding its business activities. The table below provides a summary of our liquidity position:
 As of December 31, 2014
 Millions of Dollars
Cash and Cash Equivalents$74
Borrowings under Revolving Credit Facilities(1)
85
Amount Available under Revolving Credit Facilities185
(1)
Includes an LOC issued under the 2010 Credit Agreement.

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Short-term Investments
TEP’s short-term investment policy governs the investment of excess cash balances. We regularly review and update this policy in response to market conditions. At December 31, 2014, TEP's short-term investments included highly-rated and liquid money market funds.
Access to Revolving Credit Facilities
We have access to working capital through revolving credit agreements with lenders. Each of these agreements is a committed facility with various expiration dates. The 2014 revolving credit facility may be used for revolving borrowings. The 2010 revolving credit facility may be used for revolving borrowings as well as to issue trade LOCs. TEP issues LOCs from time to time to provide credit enhancement to counterparties for its energy procurement and hedging activities.
Liquidity Outlook
We believe that we have sufficient liquidity under our revolving credit facilities to meet short-term working capital needs and to provide credit enhancement as necessary under energy procurement and hedging agreements. However, TEP will need
Available Liquidity
(in millions)As of December 31, 2015
Cash and Cash Equivalents$56
Amount Available under Revolving Credit Facility (1)
250
Total Liquidity$306
(1)
TEP's revolving credit facility, which matures in 2020, provides for a $250 million revolving credit commitment with a LOC sublimit of $50 million.
Future Liquidity Requirements
We expect to issue additional long-termmeet all of our financial obligations and other anticipated cash outflows for the foreseeable future. These obligations and anticipated cash outflows include, but are not limited to, dividend payments, debt by April 2015maturities, and obligations included in order to complete the purchase of the Springerville Coal Handling Facilities Contractual Obligations and to ensure adequate revolving credit capacity through the second and third quarters of 2015. Further, TEP will need to issue additional debt by November 2015 to repay amounts borrowed under the 2014 Credit Agreement. forecasted Capital Expenditures tablesbelow.
See Part III, Item 7A7A. Quantitative and Qualitative Disclosures about Market Risk.for additional information regarding TEP's market risks and Note 6of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding TEP's financing arrangements.
Summary of Cash FlowsFlow
The table below presents net cash provided by (used for) operating, investing and financing activities:
 Year Ended December 31,
 2014 2013 2012
 Millions of Dollars
Net Cash Flows – Operating Activities (GAAP)$314
 $346
 $268
Net Cash Flows – Investing Activities (GAAP)(518) (260) (228)
Net Cash Flows – Financing Activities (GAAP)253
 (141) 12
Net Increase (Decrease) in Cash49
 (55) 52
Beginning Cash25
 80
 28
Ending Cash$74
 $25
 $80
 Year Ended 
Increase
(Decrease)
 Year Ended 
Increase
(Decrease)
(in millions)2015 2014 Percent 2013 Percent
Operating Activities$365
 $314
 16.2 % $346
 (9.2)%
Investing Activities(503) (518) (2.9)% (260) 99.2 %
Financing Activities120
 253
 (52.6)% (141) 279.4 %
Net Increase (Decrease) in Cash(18) 49
 (136.7)% (55) 189.1 %
Cash, Beginning of Year74
 25
 196.0 % 80
 (68.8)%
Cash, End of Year$56
 $74
 (24.3)% $25
 196.0 %
The table below shows TEP's net cash flows after capital expendituresCash Flows for both 2015 and payments on capital lease obligations, net of payments received on lease debt previously held by TEP:
 Year Ended December 31,
 2014 2013 2012
 Millions of Dollars
Net Cash Flows – Operating Activities (GAAP)$314
 $346
 $268
Less: Capital Expenditures(1)
(507) (253) (253)
Net Cash Flows after Capital Expenditures (Non-GAAP)(2)
(193) 93
 15
Less: Payments of Capital Lease Obligations(165) (100) (89)
Plus: Proceeds from Investment in Lease Debt
 9
 19
Net Cash Flows after Capital Expenditures and Required Payments on Debt and Capital Lease Obligations (Non-GAAP)(2)
$(358) $2
 $(55)
(1)
Includes the purchase of Gila River Unit 3 ($164 million) and Springerville Unit 1 Leased Assets ($20 million) separately presented on the Cash Flow Statement.
(2)
Net Cash Flows after Capital Expenditures and Net Cash Flows after Capital Expenditures and Required Payments on Capital Lease Obligations, Net of Payments Received on Lease Debt, both non-GAAP measures of liquidity, should not be considered as alternatives to Net Cash Flows—Operating Activities, which is determined in accordance with GAAP. We believe that Net Cash Flows after Capital Expenditures and Net Cash Flows after Capital Expenditures and Required Payments on Capital Lease Obligations, Net of Payments Received on Lease Debt provide useful information as measures of TEP’s ability to fund capital requirements and make required payments on capital lease obligations before consideration of financing activities.

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TEP had2014 included unusually large expenditures in 2014 related to the purchase of both Gila River Unit 3 and Springerville Unit 1 leased assets. Additionally, the structure of our Springerville Unit 1 Leases, that expired on January 1, 2015, required disproportionately large lease payments in 2014. Ourcapital expenditures. These capital requirements were met with a combination of equity contributions from UNS Energy and long-term borrowings as discussed in Financing Activities below. As shown in our forecasted capital expenditures table below, TEP expects capital requirements to remain high in

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In 2015, and then taper off in 2016 through 2019. We expect to issue newwe issued long-term debt and used the proceeds to repay revolving and term loans under our credit agreements and pay a portion of the purchase price for interests in 2015the Springerville Coal Handling Facilities. In addition, we received an equity contribution from UNS Energy and used the proceeds to meetrepay the outstanding balances under our capital requirements.revolving credit facilities and redeem long-term variable rate tax-exempt bonds which were called for redemption in June 2015.
In 2014, we received an equity contribution from UNS Energy and used the proceeds to pay for the purchase of both Gila River Unit 3 and Springerville Unit 1 leased assets.
Operating Activities
2014 Compared2015 compared with 20132014
In 2014,2015, net cash flows from operating activities were $32increased by $51 million lower compared with 2013. The decrease wasto 2014 primarily due primarily to: $15
$39 million of merger-related costs; $12 million of increased incentive compensation payments; and an increase of $6 million of capital lease interest paid.
2013 Compared with 2012
In 2013, net cash flows from operating activities were $78 million higher than in 2012. The increase was due primarily to: a $34 million increase in cash receipts from retail and wholesale sales, net of fuel and purchased power costs paid resulting from a base rate increase that became effective on July 1, 2013,driven primarily by an increase in retail sales volumes,the average PPFAC rate; and an
$34 million in lower cash paid for acquisition-related costs and incentive compensation primarily due to the 2014 acquisition.
The increase in wholesale power prices; a $30 million decrease in operations and maintenance costs paid due in part to lower renewable prepayments, lower incentive payments under DSM programs, and lower payments for remote generating stations; and a $6 million decrease in capital lease interest paid due to a decline in capital lease obligation balances;net cash flows from operating activities was partially offset by a $6$16 million increase in wagesof higher cash paid (netfor pension and retiree funding.
2014 compared with 2013
In 2014, net cash flows from operating activities decreased by $32 million compared to 2013 primarily due to:
$27 million of amounts capitalized).higher cash paid for acquisition-related costs and incentive compensation primarily due to the 2014 acquisition; and
$6 million of higher cash paid for capital lease interest.
Investing Activities
2015 compared with 2014
In 2015, net cash flows used for investing activities decreased by $15 million compared with 2014 Comparedprimarily due to:
$164 million purchase, in December 2014, of a 75% interest in Gila River Unit 3; and
$20 million purchase, in December 2014, of a 10.6% interest in Springerville Unit 1.
The decrease in net cash flows used for investing activities was partially offset by:
$120 million purchase, in April 2015, of an additional 86.7% undivided ownership interest in the Springerville Coal Handling Facilities partially offset by $24 million of cash received for the sale, in May 2015, of a 17.05% undivided ownership interest in the Springerville Coal Handling Facilities to SRP;
$46 million purchase, in January 2015, of an additional 24.8% undivided ownership interest in Springerville Unit 1 increasing our total ownership interest to 49.5%;
$11 million in lower cash receipts for contributions in aid of construction received; and
$10 million of higher capital expenditures to fund system reinforcement through replacements and betterments.
2014 compared with 2013
NetIn 2014, net cash flows used for investing activities increased by $258 million in 2014 compared with 2013 primarily due primarily to: the
$164 million purchase, in December 2014, of a 75% interest in Gila River Unit 3 for $164 million; the purchase3;
$71 million of a 10.6% interest in Springerville Unit 1 for $20 million; and a $71 million increase inhigher capital expenditures to fund the construction of new solar projects and improvements to our generating facilities. TEP's capital expenditures, including thefacilities; and
$20 million purchase, in December 2014, of Gila River Unit 3 and thea 10.6% interest in Springerville Unit 1 lease interest, were $507 million in 2014 and $253 million in 2013.
2013 Compared with 2012
Net cash flows used for investing activities increased by $32 million in 2013 compared with 2012 due primarily to: a $14 million increase in purchases of RECs due to an increase in renewable energy PPAs; and $10 million in lower proceeds from investment in lease debt. TEP’s capital expenditures were $253 million in each of 2013 and 2012.
TEP's forecasted capital expenditures are summarized below:
 2015 2016 2017 2018 2019
 Millions of Dollars
Transmission and Distribution$211
 $102
 $86
 $89
 $100
Generation Facilities96
 74
 100
 72
 44
Renewable Energy Generation27
 35
 29
 29
 29
Springerville Lease Purchases(1)
119
 
 38
 
 
General and Other55
 41
 41
 41
 52
Total Capital Expenditures$508
 $252
 $294
 $231
 $225
(1)
Includes: Springerville Unit 1 lease interest purchase of $46 million in 2015; TEP's portion of the Springerville Coal Handling facilities purchase of $73 million (net of expected reimbursements from Tri-State and SRP) in 2015; and Springerville Common facilities purchase of $38 million in 2017.
These estimates are subject to continuing review and adjustment. Actual capital expenditures may differ from these estimates due to changes in business conditions, construction schedules, environmental requirements, state or federal regulations and other factors.1.

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Financing Activities
2015 compared with 2014
In 2015, net cash flows from financing activities decreased by $133 million compared with 2014 Comparedprimarily due to:
$209 million in higher cash payments due to the purchase of $130 million in fixed rate tax-exempt long-term debt in January 2015, and the retirement of $79 million in variable rate tax-exempt bonds in August 2015;
$170 million in lower proceeds borrowed and higher repayments under TEP's revolving credit facilities;
$45 million in lower cash proceeds from UNS Energy's equity contributions; and
$10 million in higher cash dividend payments.
The decrease in net cash flows from financing activities was partially offset by:
$152 million in lower cash payments due to the expiration of capital lease obligations in 2015; and
$150 million in higher cash proceeds from the issuance of long-term debt, in February 2015.
2014 compared with 2013
In 2014, net cash flows from financing activities wasincreased by $394 million higher than the same period last yearcompared with 2013 primarily due to:
$225 million in higher cash proceeds from UNS Energy's equity contributions made to complete the purchases for interest in Gila River Unit 3 and Springerville Unit 1;
$149 million in higher cash proceeds from the issuance of $149 million of long-term debt; an $85and
$85 million increase in higher cash borrowings (net of repayments) under TEP's revolving credit facilities; and $225 million of UNS Energy equity contributions;facilities.
The increase in net cash flows from financing activities was partially offset by a $66 million increase in higher cash payments of capital lease obligations.
Following completionExternal Sources of Liquidity
Short-Term Investments
TEP’s short-term investment policy governs the Merger, Fortis made equityinvestment of excess cash balances. We regularly review and update this policy in response to market conditions. At December 31, 2015, TEP's short-term investments in UNS Energy totaling $287 million. UNS Energy then contributed a total of $225 millionincluded highly-rated and liquid money market funds.
Access to TEP. These equity investments in TEP helped fund the Gila River Unit 3 and Springerville Unit 1 purchase commitments.
2013 Compared with 2012
In 2013, net cash from financing activities was $153 million lower than 2012. Financing activities in 2013 included a $10 million increase in dividend payments to UNS Energy and a $10 million increase in payments made on capital lease obligations. Financing activities in 2012 included: the issuance of $150 million of long-term debt; $7 million of repayments of long-term debt; and $10 million of repayments (net of borrowings) under the TEP Revolving Credit Facility.Facilities
Credit Agreements
2014 Credit Agreement
In December 2014, TEP entered into an unsecuredWe have access to working capital through a revolving credit agreement (2014 Credit Agreement).with lenders. The 20142015 Credit Agreement provides for a $130 million term loan commitment and a $70$250 million revolving credit commitment. In January 2015,commitment and LOC facility, due in October 2020. The LOC sublimit is $50 million. TEP expects that amounts borrowed under the term loan commitmentcredit agreement will be used for working capital and other general corporate purposes and that LOCs will be issued from time to time to support energy procurement and hedging transactions. No amounts were used to purchase existing Pima County, Arizona unsecured tax-exempt industrial development revenue bonds (IDBs) issued indrawn under the 2015 Credit Agreement at December 31, 2015.
In June 2008 for2015, the benefit of TEP in the amount of $130 million. The 2014 Credit Agreement expires in November 2015.
The 2014 Credit Agreement contains substantially the same restrictive covenants aswas terminated. In October 2015, the 2010 Credit Agreement described below. At December 31, 2014, TEP was in compliance with the terms of the 2014 Credit Agreement. Seeterminated.
For details on TEP's credit facilities see Note 56 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information.
AtDebt Financing
We use debt financing to lower our overall cost of capital. We are exposed to adverse changes in interest rates to the extent that we rely on variable rate financing. Our cost of capital is also affected by our credit ratings
In April 2015, we filed a financing application with the ACC. The application requests extending and expanding the existing financing authority to TEP by: (i) extending authority from December 31, 2014, TEP had $70 million borrowings at an2016 to December 2020; (ii) increasing the outstanding long-term debt limitation from $1.7 billion to $2.2 billion; (iii) allowing parent equity contributions of up to $400 million; and (iv) extending current interest rate hedging authority. The ACC issued an order granting such authority in January 2016.

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As discussed in Part I, Item 1A. Risk Factors of 0.750% underthis Form 10-K, we may need to redeem or defease certain tax-exempt bonds outstanding. To the 2014 Credit Agreement revolving credit facility andextent that is required, we would need to issue new taxable debt or enter into a new bank financing.
We have no borrowings under the term loan portionnew financing planned for 2016. TEP has, from time to time, refinanced or repurchased portions of the 2014 Credit Agreement.
2010 Credit Agreement
The 2010 Credit Agreement consists of a $200 million revolving credit, revolving LOC facility and an $82 million LOC facility to support tax-exempt bonds. The 2010 Credit Agreement expires in November 2016.
In December 2013, TEP reduced its letter of credit facility from $186 million to $82 million, following the refinancing of $100 million of variable rate bonds and the cancellation of $104 million of LOCs supporting those bonds.
At December 31, 2014, there were $15 million in borrowings outstanding and less than $1 million of LOCs issued under the 2010 Credit Agreement.
The 2010 Credit Agreement contains restrictionsdebt before scheduled maturity. Depending on mergers and sales of assets. The 2010 Credit Agreement also requires TEP not to exceed a maximum leverage ratio. If TEP complies with the terms of the 2010 Credit Agreement,market conditions, TEP may pay dividendsrefinance other debt issuances or make additional debt repurchases in the future. For details on changes to UNS Energy subject to the terms of the merger order issued by the ACC in August 2014. At December 31, 2014, TEP was in compliance with the terms of the 2010 Credit Agreement. Seeor maturities on long-term debt, see Note 56 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information.
2010 Reimbursement Agreement
In December 2010, TEP entered into a four-year $37 million reimbursement agreement (2010 Reimbursement Agreement). A $37 million LOC was issued pursuant to the 2010 Reimbursement Agreement. The LOC supports $37 million aggregate principal amount of variable rate tax-exempt pollution control bonds that were issued on behalf of TEP in December 2010.
In February 2014, TEP amended the 2010 Reimbursement Agreement to extend the expiration date of the LOC from 2014 to 2019.

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The 2010 Reimbursement Agreement contains substantially the same restrictive covenants as the 2010 Credit Agreement described above. At December 31, 2014, TEP was in compliance with the terms of the 2010 Reimbursement Agreement.
2014 Bond Issuances and Redemptions
In March 2014, TEP issued $150 million of 5.0% unsecured notes due March 2044. TEP may redeem the notes prior to September 2043, with a make-whole premium plus accrued interest. After September 2043, TEP may redeem the notes at par plus accrued interest. TEP used the net proceeds to repay approximately $90 million on the outstanding borrowings under the 2010 Credit Agreement with the remaining proceeds used for general corporate purposes. See Note 5 of Notes to Consolidated Financial Statements.
Capital Lease Obligations
At December 31, 2014, TEP had $243 million of total capital lease obligations on its balance sheet. The table below provides a summary of the outstanding lease obligations:
 
Capital Lease Obligation
Balance As Of
    
Capital LeasesDecember 31, 2014 Expiration Renewal/Purchase Option
 Millions of Dollars    
Springerville Unit 1(1)
$43
 2015 Fair market value
Springerville Coal Handling Facilities117
 2015 
Fixed price purchase
option of $120 million(2)
Springerville Common Facilities(3)
83
 2017 and 2021 
Fixed price purchase
option of $106 million(3)
Total Capital Lease Obligations$243
    
(1)
The Springerville Unit 1 Leases cover both Unit 1 and an undivided one-half interest in certain Springerville Common Facilities. The $43 million balance represents the lease purchase options that were completed in January 2015. As of January 1, 2015 there is no capital lease obligation balance related to Springerville Unit 1.
(2)
The $117 million balance represents the present value of the lease purchase options elected in April 2014. Upon TEP’s purchase, SRP is obligated to buy a portion of the Springerville Coal Handling Facilities from TEP for approximately $24 million and Tri-State is obligated to either 1) buy a portion of the facilities for approximately $24 million or 2) continue to make payments to TEP for the use of the facilities. See Item 7. Management's Discussion and Analysis of Financial Condition and Factors Affecting Results of Operations, Springerville Coal Handling Facilities Capital Lease Purchase Commitment. Also see Note 5 of Notes to Consolidated Financial Statements.
(3)
The Springerville Common Facilities Leases cover an undivided one-half interest in certain Springerville Common Facilities.
Our capital lease obligation balances decline over time as scheduled capital lease payments are made by TEP.

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Contractual Obligations
The following chart displays TEP’s contractual obligations by maturity and by type of obligation as of December 31, 2014:
Payment Due in Years Ending December 31,2015 2016 2017 2018 2019 Thereafter Other Total
 Millions of Dollars
Long-Term Debt               
Principal(1)
$
 $79
 $
 $100
 $37
 $1,159
 $
 $1,375
Interest(2)
58
 59
 59
 59
 56
 554
 
 845
Capital Lease Obligations(3)
188
 16
 18
 11
 12
 18
 
 263
Operating Leases:(4)
               
Land Easements and Rights-of-Way2
 1
 1
 1
 2
 77
 
 84
Operating Leases Other1
 1
 1
 1
 1
 5
 
 10
Purchase Obligations:               
Fuel(5)
76
 78
 76
 49
 49
 285
 
 613
Purchased Power22
 7
 
 
 
 
 
 29
Transmission6
 6
 6
 6
 4
 16
 
 44
Renewable Power Purchase Agreements(6)
45
 45
 45
 45
 44
 565
 
 789
RES Performance-Based Incentives(7)
8
 8
 8
 8
 8
 76
 
 116
Acquisition of Springerville Common Facilities(8)

 
 38
 
 
 68
 
 106
Other Long-Term Liabilities:(9)
               
Pension & Other Post Retirement Obligations(10)
30
 6
 6
 6
 7
 37
 
 92
Unrecognized Tax Benefits
 
 
 
 
 
 4
 4
Total Contractual Obligations$436
 $306
 $258
 $286
 $220
 $2,860
 $4
 $4,370
(1)
Certain of TEP’s variable rate IDBs or pollution control revenue bonds are secured by LOCs issued pursuant to the 2010 Credit Agreement, which expires in 2016, and the 2010 TEP Reimbursement Agreement, which expires in 2019. Although the $115 million of variable rate bonds mature between 2022 and 2032, the above maturity reflects a redemption or repurchase of such bonds as though the LOCs terminate without replacement upon expiration of the 2010 Credit Agreement in 2016 (that supports $78 million of variable rate bonds) and the 2010 TEP Reimbursement Agreement in 2019 (that supports $37 million of variable rate bonds). Additionally, TEP's 2013 variable-rate IDBs, which mature in 2032, are subject to mandatory tender for purchase after the current five-year term and are therefore reflected as maturing in 2018. Excludes approximately $2 million of debt discount.
(2)
Excludes interest on revolving credit facilities and includes interest on TEP's 2013 tax-exempt IDBs through the end of the current five-year term.
(3)
Capital lease obligations include the purchase commitments for Springerville Unit 1 in January 2015 and Springerville Coal Handling Facilities at the expiration of the lease term in April 2015. Effective with commercial operation of Springerville Unit 3 in July 2006 and Unit 4 in December 2009, Tri-State and SRP are reimbursing TEP for various operating costs related to the common facilities on an ongoing basis, including a total of $14 million annually related to the Springerville Common and Springerville Coal Handling Facilities Leases. TEP remains the obligor under these capital leases, and Capital Lease Obligations do not reflect any reduction associated with this reimbursement.
(4)
TEP's operating lease expense is primarily for rail cars, office facilities, land easements, and rights-of-way with varying terms, provisions, and expiration dates.
(5)
Excludes TEP’s liability for final environmental reclamation at the coal mines which supply the Navajo, San Juan and Four Corners generating stations as the timing of payment has not been determined. See Note 6 of Notes to Consolidated Financial Statements.
(6)
TEP has entered into 20-year PPAs with renewable energy generation producers to comply with the RES tariff. TEP is obligated to purchase 100% of the output of these facilities. The table above includes estimated future payments based on expected power deliveries under these contracts. TEP has entered into additional long-term renewable PPAs to comply with the RES; however, TEP's obligations to accept and pay for electric power under these agreements does not begin until the facilities are operational.
(7)
TEP has entered into REC purchase agreements to purchase the environmental attributes from retail customers with solar installations. Payments for the RECs are termed Performance Based Incentives (PBIs) and are paid in contractually agreed upon

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intervals (usually quarterly) based on metered renewable energy production. PBIs are recoverable through the RES tariff. See Note 2 of Notes to Consolidated Financial Statements.
(8)
The Springerville Common Facilities Leases have an initial term to December 2017 for one lease and January 2021 for the other two leases, subject to optional renewal periods of two or more years through 2025. Instead of extending the leases, TEP may exercise its fixed-price purchase options.
(9)
Excludes asset retirement obligations expected to occur through 2066.
(10)
These obligations represent TEP’s expected contributions to pension plans in 2015, expected benefit payments for its unfunded Supplemental Executive Retirement Plan (SERP), and expected retiree benefit costs to cover medical and life insurance claims as determined by the plans’ actuaries. Due to the significant impact that returns on plan assets and changes in discount rates might have on payment obligation amounts, other contributions are excluded beyond 2015.
We have reviewed our contractual obligations and provide the following additional information:Debt Restrictive Covenants
The 20102015 Credit Agreement, the 2010 Reimbursement Agreement, and the 2013 Covenants Agreement contain pricing based on TEP’s credit ratings. A change in TEP’s credit ratings can cause an increase or decrease in the amount of interest TEP pays on its borrowings, and the amount of fees it pays for its LOCs and unused commitments. A downgrade in TEP’s credit ratings would not cause a restriction in TEP’s abilityAlso, under certain agreements, should TEP fail to borrow under its revolving credit facilities.
The 2014 Credit Agreement, the 2010 Credit Agreement, the 2010 Reimbursement Agreement, and the 2013 Covenants Agreement contain certain financial and other restrictivemaintain compliance with covenants, including a leverage test. Failure to comply with these covenants would entitle the lenders tocould accelerate the maturity of all amounts outstanding. At December 31, 2014,2015, TEP was in compliance with these covenants. See Credit Agreements, above.
TEP conducts its wholesale marketing and risk management activities under certain master agreements whereby TEP may be required to post credit enhancements in the form of cash or a LOC due to exposures exceeding unsecured credit limits provided to TEP, changes in contract values, a change in TEP’s credit ratings, or if there has been a material change in TEP’s creditworthiness. As of December 31, 2014,2015, TEP had posted less than $1 million in LOCs for credit enhancement with wholesale counterparties.
We do not have any provisions in any of our debt or lease agreements that would cause an event of default or cause amounts to become due and payable in the event of a credit rating downgrade.
DividendsCredit Ratings
Our credit ratings affect our access to capital markets and supplemental bank financing. At December 31, 2015, TEP’s credit ratings for senior unsecured debt were A3 from Moody’s and BBB+ from both Standard & Poor’s and Fitch. As of February 2016, at TEP's request for commercial reasons, Fitch withdrew its rating on Common StockTEP.
In 2014,TEP's credit ratings are dependent on a number of factors, both quantitative and qualitative, and are subject to change at any time. The disclosure of these credit ratings is not a recommendation to buy, sell, or hold TEP securities. Each rating should be evaluated independently of any other ratings.
Dividends
TEP declared and paid $50 million in dividends to UNS Energy of $40 million. TEP paid dividends to UNS Energy ofin 2015 and $40 million in 20132014 and $30 million in 2012.2013.
The ACC's approval of the Merger containsacquisition of UNS Energy by Fortis, in August 2014, contained a condition restricting subsidiary dividend payments to UNS Energy by TEP to no more than 60 percent of TEP's annual net income for the earlier of five years or until such time that TEP's equity capitalization reaches 50 percent of total capital as accounted for in accordance with GAAP. The ratios used to determine the dividend restrictions will be calculated for each calendar year and reported to the ACC annually beginning on April 1, 2016. As of December 31, 2015, TEP had not yet reached the 50 percent of total capital and was therefore still restricted by the condition contained in the ACC's approval order.
Capital Expenditures
TEP's routine capital expenditures include funds used for system reinforcement, replacements and betterments, and costs to comply with environmental rules and regulations. In 2015, total capital expenditures of $500 million, included the purchase of an undivided ownership interest in Springerville Unit 1 and the remaining ownership interest in the Springerville Coal Handling facilities. In 2014, total capital expenditures of $507 million, included the purchase of interest in Gila River Unit 3 and an undivided ownership interest in Springerville Unit 1. Construction for a new 500-kilovolt (kV) transmission line in Pinal County that began in December 2014 and concluded in late 2015, totaled $79 million.

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With the exception of 2017, we expect capital requirements to remain stable from 2016 through 2020. TEP's forecasted capital expenditures are summarized below:
(in millions)2016 2017 2018 2019 2020
Generation Facilities:         
Environmental Compliance$39
 $27
 $11
 $2
 $2
Renewable Energy27
 27
 27
 27
 27
Springerville Common Lease Purchase
 38
 
 
 
Other Generation Facilities34
 82
 31
 36
 39
Total Generation Facilities100
 174
 69
 65
 68
Transmission and Distribution122
 112
 159
 154
 163
General and Other (1)
52
 46
 56
 57
 54
Total Capital Expenditures$274
 $332
 $284
 $276
 $285
(1)
General and Other primarily includes cost for information technology as well as fleet, facilities and communication equipment.
These estimates are subject to continuing review and adjustment. Actual capital expenditures may differ from these estimates due to changes in business conditions, construction schedules, environmental requirements, state or federal regulations and other factors. We expect to pay for forecasted capital expenditures with cash on hand, internally generated funds, and short-term revolver borrowings.
Contractual Obligations
The following chart displays TEP’s contractual obligations by maturity and by type of obligation as of December 31, 2015:
   Payments Due by Period
(in millions)Total Less than 1 Year 1-3 Years 3-5 Years More than 5 Years
Long-Term Debt
        
Principal (1)
$1,466
 $
 $100
 $117
 $1,249
Interest (2)
769
 59
 120
 116
 474
Capital Lease Obligations (3)
77
 17
 30
 30
 
Operating Leases: (4)

        
Land Easements and Rights-of-Way82
 1
 2
 2
 77
Operating Leases Other9
 1
 2
 2
 4
Purchase Obligations:
        
Fuel, Including Transportation (5)(6)
580
 78
 125
 90
 287
Purchased Power28
 28
 
 
 
Transmission38
 6
 12
 7
 13
Renewable Purchase Power Agreements (7)(8)
1,054
 61
 122
 121
 750
RES Performance-Based Incentives (9)
107
 8
 16
 16
 67
Acquisition of Springerville Common Facilities (10)
106
 
 38
 
 68
Other Long-Term Liabilities: (11) (12)

        
Restricted and Performance-Based Stock Units2
 
 2
 
 
Pension & Other Post Retirement Obligations (13)
77
 16
 11
 13
 37
Total Contractual Obligations$4,395
 $275
 $580
 $514
 $3,026
(1)
$37 million of TEP’s variable rate bonds are backed by an LOC issued pursuant to the 2010 Reimbursement Agreement, which expires in December 2019. Although the variable rate bond matures in 2032, the above table reflects a redemption or repurchase of such bond in 2019 as though the LOC terminates without replacement upon expiration of the 2010 Reimbursement Agreement. TEP's 2013 tax-exempt variable rate IDRBs, which have an aggregate principal amount of $100 million and mature in 2032, are subject to mandatory tender for purchase in 2018. Total long-term debt is not reduced by $11 million of related unamortized debt issuance costs or $3 million of unamortized original issue discount.

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(2)
Excludes interest on revolving credit facilities and includes interest on TEP's 2013 tax-exempt IDRBs through the end of the current five-year term.
(3)
Effective with commercial operation of Springerville Unit 3 in July 2006 and Unit 4 in December 2009, Tri-State and SRP began reimbursing TEP for various operating costs related to the common facilities on an ongoing basis. The common facilities included assets leased by TEP under the Springerville Common and Springerville Coal Handling Facilities Leases. Upon expiration of the Springerville Coal Handling Lease in April 2015, TEP purchased the interests in those assets. SRP then purchased an undivided interest in those coal handling assets from TEP. Tri-State and SRP each continue to reimburse TEP for their shares of common assets owned or leased by TEP. TEP was reimbursed for $11 million of operation costs in 2015, and absent a purchase of an interest in the coal handling facilities by Tri-State, will be reimbursed $10 million of operation costs in 2016. Capital Lease Obligations do not reflect any reduction associated with this reimbursement. Our capital lease obligation balances decline over time as scheduled capital lease payments are made by TEP.
(4)
TEP's operating lease expense is primarily for rail cars, office facilities, land easements, and rights-of-way with varying terms, provisions, and expiration dates.
(5)
Contemporaneously with the sale of SJCC's stock in January 2016, the existing coal sale agreement terminated and a new Coal Supply Agreement (CSA) became effective. The new CSA is between SJCC and PNM and continues through June 30, 2022. TEP is not a party to the new CSA, but has minimum purchase obligations under restructured ownership agreements at San Juan. Estimated future payments, not included in the table above, are $21 million in 2016, $23 million in 2017, $24 million in 2018 and 2019, $23 million in 2020, and $22 million through the end of the contract.
(6)
Excludes TEP’s liability for final environmental reclamation at the coal mines which supply the Navajo, San Juan and Four Corners generating stations as the timing of payment has not been determined. See Note 7 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding TEP’s share of reclamation costs.
(7)
TEP enters into long-term renewable power purchase agreements which require TEP to purchase 100% of certain renewable energy generation facilities output once commercial operation status is achieved. While TEP is not required to make payments under these contracts if power is not delivered, the table above includes estimated future payments based on expected power deliveries.
(8)
In February 2016, a facility achieved commercial operation status. The related contract expires in 2036. Estimated future payments, not included in the table above, are $3 million in each of 2016 through 2020 and $43 million through the end of the contract.
(9)
TEP has entered into REC purchase agreements to purchase the environmental attributes from retail customers with solar installations. Payments for the RECs are termed Performance-Based Incentives (PBIs) and are paid in contractually agreed upon intervals (usually quarterly) based on metered renewable energy production. PBIs are recoverable through the RES tariff. See Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for additional information regarding TEP's RES tariff.
(10)
The Springerville Common Facilities Leases have an initial term to December 2017 for one lease and January 2021 for the other two leases, subject to optional renewal periods of two or more years through 2025. Instead of extending the leases, TEP may exercise its fixed-price purchase options.
(11)
Excludes asset retirement obligations of $33 million expected to occur through 2066.
(12)
Excludes unrecognized tax benefits of $5 million. At this time we are unable to make a reasonably reliable estimate of the timing of payments in individual years in connection with these tax liabilities.
(13)
These obligations represent TEP’s expected contributions to pension plans in 2016, expected benefit payments for its unfunded Supplemental Executive Retirement Plan (SERP), and expected retiree benefit costs to cover medical and life insurance claims as determined by the plans’ actuaries. Due to the significant impact that returns on plan assets and changes in discount rates might have on payment obligation amounts, other contributions are excluded beyond 2016.
We expect to pay for forecasted capital expenditures with cash on hand, internally generated funds, and short-term revolver borrowings.
Off Balance Sheet Arrangements
Other than the unrecorded contractual obligations in the table above, we do not have any arrangements or relationships with entities that are not consolidated into the financial statements.
Income Tax Position
The 2010 Federal Tax Relief Act,Prior year tax legislation and the American Taxpayer ReliefConsolidated Appropriations Act of 2012, and the Tax Increase Prevention Act of 20142016, include provisions that make qualified property placed in service between 2010 and 20142019 eligible for bonus depreciation for tax purposes. In addition, the IRS issued new guidance related to the treatment of expenditures to maintain, replace, or improve property. These provisions are an acceleration of tax benefits TEP otherwise would have received over 20 years and have created net operating loss

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carryforwards that can be used to offset future taxable income. As a result, TEP did not pay any federal or state income taxes in 20142015 and does not expect to make any payments until 2019.2020.
Environmental Matters
The EPA regulates the amount of sulfur dioxide (SO2), nitrogen oxide (NOx), carbon dioxide (CO2), particulate matter, mercury and other by-products produced by power plants. TEP may incur added costs to comply with future changes in federal and state environmental laws, regulations, and permit requirements at its power plants. Environmental laws and regulations are subject to a range of interpretations, which may ultimately be resolved by the courts. Because these laws and regulations continue to evolve, TEP is unable to predict the impact of the changing laws and regulations on its operations and consolidated financial results. Complying with these changes may reduce operating efficiency. TEP capitalized $33 million in 2015, $11 million in 2014, and $5 million in 2013 in costs to comply with environmental rules and regulations. In addition, we recorded O&M expenses of $6 million in 2015, $5 million in 2014, and $8 million in 2013. TEP expects to recover the cost of environmental compliance from its ratepayers.
Hazardous Air Pollutant Requirements
In February 2012, the EPA issued final rules for the control of mercury emissions and other hazardous air pollutants from power plants. Based on the EPA's final Mercury and Air Toxics Standards (MATS) rules, additional emission control equipment would have been required by April 2015. TEP, as operator of the Springerville and Sundt generating stations, and the operators of Navajo and Four Corners received extensions until April 2016 to comply with the MATS rules.
In June 2015, the U.S. Supreme Court reversed and remanded the D.C. Circuit Court of Appeals decision in Michigan v. EPA to uphold the MATS rules requiring power plants to control mercury and other emissions. The Supreme Court held that the EPA did not adequately consider “cost” before determining that MATS was “appropriate and necessary.” The D.C. Circuit Court of Appeals remanded the rules to the EPA for further consideration.
At this time, despite the U.S. Supreme Court ruling, the MATS rules remain in force and effect. TEP will proceed with its planned MATS compliance activity at each of our facilities. Additionally, Arizona has an Arizona-specific mercury rule in place that will become effective and applicable to our Arizona facilities in the event the Federal rule is struck down. Our compliance strategy is intended to ensure compliance with both the Federal and the State rule, as applicable.
TEP's share of the estimated mercury emission control costs to comply with the MATS rules includes the following:
(in millions)Navajo 
Springerville(1)
Capital Expenditures$1
 $5
Annual O&M Expenses$1
 $1
Compliance Year2016 2016
(1)
Total capital expenditures and annual O&M expenses represent amounts for Springerville Units 1 and 2, with estimated costs split equally between the two units. In January 2015, TEP completed the purchase of 24.8% of Springerville Unit 1, bringing its total ownership interest to 49.5%. With the completion of the purchase, the Third-Party Owners are responsible for 50.5% of environmental costs attributable to Springerville Unit 1. TEP will continue to be responsible for 100% of environmental costs attributable to Springerville Unit 2.
TEP expects no additional capital expenditures or O&M expenses will be incurred to comply with the MATS rules at Four Corners, Sundt, and San Juan Generating Stations.
Regional Haze Rules
The EPA's Regional Haze Rules require emission controls known as BART for certain industrial facilities emitting air pollutants that reduce visibility in national parks and wilderness areas. The rule calls for all states to establish goals and emission reduction strategies for improving visibility. States must submit these goals and strategies to the EPA for approval. Because Navajo and Four Corners are located on land leased from the Navajo Nation, they are not subject to state oversight; the EPA oversees regional haze planning for these power plants.
In the western U.S., Regional Haze BART determinations have focused on controls for NOx, often resulting in a requirement to install Selective Catalytic Reduction (SCR). Complying with the BART rule, and with other future environmental rules, may make it economically impractical to continue operating all or a portion of the Navajo, San Juan, and Four Corners power plants or for individual owners to continue to participate in these power plants. The BART provisions do not apply to Springerville Units 1 and 2 since they were constructed in the 1980s, after the time frame as designated by the rules. Other provisions of the

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Regional Haze Rules requiring further emission reductions are not likely to impact Springerville operations until after 2018. TEP cannot predict the ultimate outcome of these matters.
TEP's estimated NOx emissions control costs involved in meeting these rules are:
(in millions)Navajo San Juan Four Corners Sundt
Capital Expenditures$28
 $12
 $44
 $12
Annual O&M Expenses$1
 $1
 $2
 $6
Compliance Year2030 2016 2018 2017
Navajo
In August 2014, the EPA published a final Federal Implementation Plan (FIP) which provides that one unit at Navajo will be shut down by 2020, SCR (or the equivalent) will be installed on the remaining two units by 2030, and conventional coal-fired generation will cease by December 2044. The final BART rule includes options that accommodate potential ownership changes at the plant. The plant has until December 2019 to notify the EPA of how it will comply with the FIP.
San Juan
In October 2014, the EPA published a final rule approving a revised State Implementation Plan (SIP) covering BART requirements for San Juan, which includes the closure of Units 2 and 3 by December 2017 and the installation of Selective Non-Catalytic Reduction (SNCR) on Units 1 and 4 by February 2016. TEP owns 50% of Units 1 and 2 at San Juan. The SIP approval references a New Source Review permit issued by the New Mexico Environment Department in November 2013 which, among other things, calls for balanced draft upgrades on San Juan Unit 1 to reduce particulate matter emissions. PNM, the operator of San Juan, is currently installing SNCR. Balanced draft modifications to San Juan Unit 1were completed in June 2015. TEP’s share of the balanced draft upgrades was approximately $22 million. In December 2015, PNM obtained New Mexico Public Regulation Commission approval to shut down Units 2 and 3 at San Juan.
At December 31, 2015, the net book value of TEP's share in San Juan Unit 2, including construction work in progress, was $104 million. Consistent with the 2013 Rate Order, TEP has requested authorization from the ACC to apply excess depreciation reserves against the unrecovered net book value in its 2015 Rate Case.
Four Corners
In December 2013, APS, on behalf of the co-owners of Four Corners, notified the EPA that they have chosen an alternative BART compliance strategy; as a result, APS closed Units 1, 2, and 3 in December 2013 and agreed to the installation of SCR on Units 4 and 5 by July 2018. TEP owns 7% of Four Corners Units 4 and 5.
Sundt
In June 2014, the EPA issued a final rule that would require TEP to either: (i) install, by mid-2017, SNCR and dry sorbent injection if Unit 4 of the H. Wilson Sundt Generating Station (Sundt) continues to use coal as a fuel source; or (ii) permanently eliminate coal as a fuel source as a better-than-BART alternative by the end of 2017. Under the rule, TEP is required to notify the EPA of its decision by March 2017.
At December 31, 2015, the net book value of the Sundt coal handling facilities was $16 million. In August 2015, TEP exhausted its existing coal supply at Sundt and has been operating Sundt with natural gas as a primary fuel source. TEP expects to retire the Sundt coal handling facilities earlier than expected, and has requested to apply excess depreciation reserves against the unrecovered net book value in its 2015 Rate Case. The estimated NOx emissions control costs in the table above will not be expended if Sundt's coal handling facilities are retired early.
Greenhouse Gas Regulation
In August 2015, the EPA issued the Clean Power Plan (CPP) limiting CO2 emissions from existing and new fossil fueled power plants. The CPP establishes state-level CO2 emission rates and mass-based goals that apply to fossil fuel-fired generation. The plan targets CO2 emissions reductions for existing facilities by 2030 and establishes interim goals that begin in 2022. States are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 2016. States that receive an extension must submit a final completed plan to the EPA by September 2018. TEP will continue to work with the other Arizona and New Mexico utilities, as well as the appropriate regulatory agencies, to develop the state compliance plans. TEP is unable to determine how the final CPP rule will impact its facilities until state plans are developed and approved by the EPA. TEP cannot predict the ultimate outcome of these matters.

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The EPA incorporated the compliance obligations for existing power plants located on Indian nations, like the Navajo Nation, in the existing sources rule and a newly proposed Federal Plan using a compliance method similar to that of the states. The proposed Federal Plan would be implemented for any Indian nation and/or state that does not submit a plan or that does not have an EPA or approved state plan. TEP will work with the participants at Four Corners and Navajo to determine how this revision may impact compliance and operations at both facilities. TEP has submitted comments on the proposed Federal Plan impacting our facilities, including Four Corners and Navajo stating, among other things, that the EPA should not regulate the greenhouse gases on the Navajo Nation because it is not appropriate or necessary. The reduction of greenhouse gases achieved due to the shutdowns resulting from Regional Haze compliance will be equivalent to those required under the CPP rule. TEP cannot predict the ultimate outcome of these matters.
TEP's compliance requirements under the CPP are subject to the outcomes of potential proceedings and litigation challenging the rule. In February 2016, the Supreme Court granted a stay effectively ordering the EPA to stop CPP implementation efforts until legal challenges to the regulation have been resolved. The ruling introduces uncertainty as to whether and when the states and utilities will have to comply with the CPP rule. TEP will continue to work with the Arizona Department of Environmental Quality to determine what, if any, actions need to be taken in light of the ruling. TEP anticipates that the ruling will likely delay the requirement to submit a plan or request an extension under the CPP by September 2016.
Coal Combustion Residuals Regulation
In April 2015, the EPA issued a final rule requiring all coal ash and other coal combustion residuals to be treated as a solid waste under Subtitle D of the Resource Conservation and Recovery Act for disposal in landfills and/or surface impoundments while allowing for the continued recycling of coal ash. TEP does not own or operate any impoundments. Under the rule, the Springerville Generating Station (Springerville) ash landfill is classified as an existing landfill and is not subject to the lateral expansion requirements. However, TEP will incur additional costs for site preparation and monitoring at Springerville to be fully compliant with the rule. TEP’s share of the cost at Springerville is estimated to be $2 million, the majority of which is expected to be capital expenditures. TEP currently estimates its share of the costs to be $5 million at Four Corners, $3 million at Navajo, and less than $1 million at San Juan, the majority of which are expected to be capital expenditures.
See Capital Expenditures above for TEP's actual and forecasted environmental-related cost.

CRITICAL ACCOUNTING POLICIES
The preparation of financial statements in accordance with GAAP requires management to apply accounting policies and to make estimates and assumptions that affect results of operations and the amounts of assets and liabilities reported in the financial statements and related notes. Management believes that the areas described below require significant judgment in the application of accounting policy or in making estimates and assumptions that are inherently uncertain and that may change in

37



subsequent periods. Additional information on TEP’s other significant accounting policies can be found in Note 1 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K.
Accounting for Regulated Operations
We account for our regulated electric operations based on accounting standards that allow the actions of our regulators, the ACC and the FERC, to be reflected in our financial statements. Regulator actions may cause us to capitalize certain costs that would otherwise be included as an expense, or in Accumulated Other Comprehensive Income (AOCI), in the current period by unregulated companies. Regulatory assets represent incurred costs that have been deferred because they are probable of future recovery in customer rates. Regulatory liabilities generally represent expected future costs that have already been collected from customers. We evaluate regulatory assets and liabilities each period and believe future recovery or settlement is probable. Our assessment includes consideration of recent rate orders, historical regulatory treatment of similar costs, and changes in the regulatory and political environment. If management's assessment is ultimately different than actual regulatory outcomes, the impact on our results of operation, financial position, and future cash flows could be material.
At December 31, 2014,2015, regulatory liabilities net of regulatory assets totaled $68$96 million at TEP. There are no current or expected proposals or changes in the regulatory environment that impact our ability to apply accounting guidance for regulated operations. If we conclude, in a future period, that our operations no longer meet the criteria in this guidance, we would reflect our regulatory pension assets in AOCI and recognize the impact of other regulatory assets and liabilities in the income statement, both of which would be material to our financial statements. See Note 2 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information regarding regulatory matters.

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Accounting for Asset Retirement Obligations
We are required to record the fair value of a liability for a legal obligation to retire a long-lived tangible asset in the period in which the liability is incurred. This includes obligations resulting from conditional future events. We incur legal obligations as a result of environmental regulations imposed by State and other governmental regulations,Federal regulators, contractual agreements and other factors. To estimate the liability, management must use significant judgment and assumptions in: determining whether a legal obligation exists to remove assets; estimating the probability of a future event for a conditional obligation; estimating the fair value of the cost of removal; estimating when final removal will occur; and estimating the credit-adjusted risk-free interest rates to be used to discount the future liabilities. Changes that may arise over time with regard to these assumptions and determinations will change amounts recorded in the future as expense for asset retirement obligations. Beginning July 1, 2013, TEP began deferringdefers costs associated with the majority of its legal AROs as regulatory assets because newthese costs are included in depreciation rates approved infor recovery by the 2013 TEP Rate Order include these costs.ACC. Deferred costs are amortized over the life of the underlying asset.
A liability for the fair value of a legal asset retirement obligation (ARO) is recognized in the period in which it is incurred if it can be reasonably estimated, with the offsetting associated asset retirement costs capitalized as a part of the carrying amount of the long-lived assets. The asset retirement cost is subsequently charged to depreciation expense over the useful life of the asset or lease term. Upon retirement of the asset, we will either settle the obligation for its recorded amount or incur a gain or loss if the actual costs differ from the recorded amount.
TEP identified legal obligations to retire generation plant assets specified in land leases for its jointly-owned Navajo and Four Corners generating stations.Generating Stations. The land on which these stations reside is leased from the Navajo Nation. The provisions of the leases require the lessees to remove the facilities upon request of the Navajo Nation at the expiration of the leases. TEP also has certain environmental obligations at the Luna, San Juan, Sundt and Springerville Generating Stations. TEP estimates that its share of the AROs to remove the Navajo and Four Corners facilities and settle the Luna, San Juan, Sundt, Gila River and Springerville environmental obligations will be approximately $157 million at the retirement dates. Additionally, TEP entered into ground lease agreements with certain land owners for the installation of photovoltaic (PV) assets. The provisions of the PV ground leases require TEP to remove the PV facilities upon expiration of the leases. TEP's ARO related to the PV assets is estimated to be approximately $30 million at the retirement dates. TEP also has certain environmental obligations at the Luna, San Juan, Sundt and Springerville Generating Stations. TEP estimates that its share of the AROs to remove the Navajo and Four Corners facilities and settle the Luna, San Juan, Sundt and Springerville environmental obligations will be approximately $164 million at the retirement dates. In December 2014, TEP purchased Gila River Unit 3 and assumed an ARO obligation. The environmental obligations related to Gila River will be approximately $4 million at the retirement date. No other legal obligations to retire generation plant assets were identified.
TEP has various transmission and distribution lines that operate under leases and rights-of-way that contain end dates and may contain site restoration clauses. TEP operates transmission and distribution lines as if they will be operated in perpetuity and would continue to be used or sold without land remediation. As such, there are no AROs for these assets.
The total net present value of TEP's ARO liability was $28$32 million at December 31, 2014.2015. ARO liabilities are reported in Deferred CreditsRegulatory and Other Liabilities—Other on the balance sheet.Consolidated Balance Sheets. See Note 3 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information regarding AROs.

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Additionally, the authorized depreciation rates for TEP include a component designed to accrue the future costs of retiring assets for which no legal obligations exist. The accumulated balances at December 31, 20142015 represent non-legal asset retirement obligation accruals, less actual removal costs incurred, net of salvage proceeds realized, and are included in Deferred CreditsRegulatory and Other Liabilities, Regulatory Liabilities – Noncurrent on the balance sheet.Consolidated Balance Sheets. See Note 2 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information.
Pension and Other Retiree Benefit Plan Assumptions
TEP records plan assets, obligations, and expenses related to pension and other retiree benefit plans based on actuarial valuations, which include key assumptions on discount rates, expected returns on plan assets, compensation increases, and health care cost trend rates. These actuarial assumptions are reviewed annually and modified as appropriate. The effect of modifications is generally recorded or amortized over future periods. We believe that the assumptions used in recording obligations are reasonable based on prior experience, market conditions, and the advice of plan actuaries. Note 8 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K discusses the assumptions used in the calculation of pension plan and other retiree plan obligations.
TEP is required to recognize the underfunded status of its defined benefit pension and other retiree plans as a liability. The underfunded status is the difference between the fair value of the plans assets and the projected benefit obligation for pension plans or accumulated retiree benefit obligation for other retiree benefit plans. As the funded status, discount rates, and actuarial facts change, the liability will vary significantly in future years. TEP records the underfunded amount for its pension and other retiree obligations as a liability and a regulatory asset to reflect expected recovery of pension and other retiree obligations through the rates charged to retail customers.
At December 31, 2014,2015, TEP discounted its future pension plan obligations at rates between 4.1%4.5% and 4.2%4.6% and its other retiree plan obligations at a rate of 3.9%4.2%. The discount rate for future pension plan and other retiree plan obligations is determined annually based on the rates currently available on high-quality, non-callable, long-term bonds. The discount rate is based on a corporate yield curve using an average yield between the 60th and 90th percentile of AA-graded U.S. corporate bonds with future cash flows that match the timing and amount of expected future benefit payments. For TEP’s pension plans, a 25-basis point change in the discount rate would increase or decrease the Projected Benefit Obligation (PBO) by approximately $14 $15

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million and the plan expense by $1 million. For TEP’s other retiree benefit plan, a 25-basis point change in the discount rate would increase or decrease the Accumulated Postretirement Benefit Obligation (APBO) by approximately $2 million.
We measured service and interest costs utilizing a single weighted-average discount rate derived from the yield curve used to measure the plan obligations. As discussed in Note 8 of Notes to Consolidated Financial Statements in Item 8 of this Form 10-K, at the end of 2015, we changed our approach to determine the service and interest cost components of pension and other postretirement benefit expense for future years. For 2016, we elected to measure service and interest costs by applying the specific spot rates along that yield curve to the plan's liability cash flows. We believe the new approach provides a more precise measurement of service and interest costs by aligning the timing of the plans' liability cash flows to the corresponding spot rates on the yield curve. The use of this approach reduces 2016 service and interest cost by $4 million andwith a corresponding increase or decreaseto regulatory assets. This change does not affect the measurement of our plan expense by less than $0.5 million.obligations nor the funded status of our plans.
TEP calculates the market-related value of pension plan assets using the fair value of the assets on the measurement date. TEP assumed that its pension plans’ assets would generate a long-term rate of return of 7% at December 31, 2014.2015. In establishing its assumption as to the expected return on assets, TEP reviews the asset allocation and develops return assumptions for each asset class based on advice from an investment consultant and the pension’s actuary that includes both historical performance analysis and forward-looking views of the financial markets. Pension expense decreases as the expected rate of return on assets increases. A 25-basis point change in the expected return on assets would impact pension expense in 20142015 by $1 million.
TEP selectedadopted the RP-2000RP-2014 mortality table projected with Scale BBimprovement scale MP-2015 with 15 year convergence and 0.75% long term rate to measure December 31, 20142015 pension obligations, whereas RP-2000 mortality table with Scale AABB was utilized for the December 31, 20132014 measurement. TEP moved to Scale BB because Scale AA has lagged general US mortality since 2000. The longer life expectancy assumption results in a greater obligation and expense.
TEP used a current year health care cost trend rate of 6.7%7.6% in valuing its retiree benefit obligation at December 31, 2014.2015. This rate reflects both market conditions and historical experience. Assumed health care cost trend rates have a significant effect on the amounts reported for health care plans. A one-percentage point change in assumed health care cost trend rates would changeincrease the retiree benefit obligation by an approximately $7 million increase or $6 million and decrease andthe retiree benefit obligation by approximately $5 million. In addition, a one-percentage point change in assumed health care cost trend rates would change the related 20152016 plan expense by approximately $1 million.
In 2015,2016, TEP will incur pension costs of approximately $13$11 million and other retiree benefit costs of approximately $6$5 million. TEP expects to charge approximately $14$13 million of these costs to O&M expense, $4and $3 million to capital, and $1 million to Other Expense.capital. TEP expects to make pension plan contributions of $23$10 million in 2015.2016. In 2009, TEP established a VEBA trust to fund its other retiree benefit plan. In 2015,2016, TEP expects to make benefit payments to retirees under the retiree benefit plan of approximately $5 million and contributions to the VEBA trust of approximately $3$1 million, net of distributions.

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Accounting for Derivative Instruments and Hedging Activities
Commodity Derivative Contracts
TEP enters into forward contracts to purchase or sell capacity or energy at contract prices over a given period of time, typically for one month, three months, or one year, within established limits to meet forecasted load requirements or to take advantage of favorable market opportunities. In general, TEP enters into forward purchase contracts when market conditions provide the opportunity to purchase energy for its load at prices that are below the marginal cost of its supply resources or to supplement its own resources (e.g., during plant outages and summer peaking periods). TEP enters into forward sales contracts when it forecasts that it haswill have excess supply and the market price of energy exceeds its marginal cost. TEP enters into forward gas commodity price swap agreements to lock in fixed prices on a portion of forecasted gas purchases and to hedge the price risk associated with forward PPAs that are indexed to natural gas prices.
For all commodity derivative instruments that do not meet the normal purchase or normal sale scope exception, we recognize derivative instruments as either assets or liabilities on the consolidated balance sheetsConsolidated Balance Sheets and measure those instruments at fair value. Unrealized gains and losses on commodity derivative contracts entered into for retail customer load are recorded as either a regulatory asset or regulatory liability on the balance sheet of TEP based on our ability to recover the costs of hedging activities entered into to mitigate energy price risk for retail customers. There are no current or expected proposals or changes in the regulatory environment that impact the probability of future recovery of these assets through the PPFAC mechanism.
The market prices used to determine fair values for TEP’s derivative instruments at December 31, 2014,2015, are estimated based on various factors including broker quotes, exchange prices, over the counter prices, and time value.

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TEP manages the risk of counterparty default by performing financial credit reviews, setting limits, monitoring exposures, requiring collateral when needed, and using a standardized agreement, which allows for the netting of current period exposures to and from a single counterparty.
Long-Term Power Sale Option
TEP entered into a three-year option to sell power to a long-term wholesale customer. This contract is not subject to regulatory accounting. Unrealized gains or losses are recorded through the income statement in Electric Wholesale Sales.
Commodity Cash Flow Hedge
TEP hedges the cash flow risk associated with a six-year power wholesale supply agreement using a six-year power purchase swap agreement. Unrealized gains and losses are recorded in AOCI. See Item 7A. Quantitative and Qualitative Disclosures about Market Risk, Commodity Price Risk and Note 1of Notes to Consolidated Financial Statements.
Interest Rate Swaps
TEP hedges the cash flow risk associated with unfavorable changes in the variable interest rates tied to LIBOR on the Springerville Common Facilities Lease. As of December 31, 2014,2015, approximately $32$29 million of variable rate lease debt for the Springerville Common Facilities Lease had been hedged through an interest rate swap agreement through January 2, 2020.
Revenue Recognition
TEP’s retail revenues, which are recognized in the period that electricity is delivered and consumed by customers, include unbilled revenue based on an estimate of kWh delivered at the end of each period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of retail sales and customer usage patterns. The unbilled revenue is estimated by comparing the estimated kWh delivered to the kWh billed to our retail customers. The excess of estimated kWh delivered over kWh billed is then allocated to the retail customer classes based on estimated usage by each customer class. We then record revenue for each customer class based on the various Retail Rates for each customer class. Due to the seasonal fluctuations of TEP’s actual load, the unbilled revenue amount increases during the spring and summer and decreases during the fall and winter. A provision for uncollectible accounts, associated with retail revenues, is recorded as a component of O&M expense.
Plant Asset Depreciable Lives
TEP has significant investments in electric generation assets and electric transmission and distribution assets. We calculate depreciation expense based on our estimate of the useful lives of our plant assets and expected net removal costs. The useful lives of plant assets are further detailed in Note 53 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K. Changes to depreciation estimates resulting from a change of estimated service life or removal costs could have a significant impact on the amount of depreciation expense recorded in the income statement. The ACC approves depreciation rates for all generation and distribution

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assets. Depreciation rates for such assets cannot be changed without the ACC's approval. TEP's transmission assets are subject to the jurisdiction of the FERC. See Note 1 of Notes to Consolidated Financial Statements.
The 2013 TEP Rate Order approved a change Statements in authorizedItem 8 of this Form 10-K for additional information regarding depreciation rates for generation and distribution plant from an average of 3.32% to 3.00%, effective July 1, 2013. The reduction in depreciation rates was primarily due to revised estimates of removal costs, net of estimated salvage value for interim and final retirements. See Note 2 of Notes to Consolidated Financial Statements.rates.
Income Taxes
Due to the differences between GAAP and income tax laws, many transactions are treated differently for income tax purposes than they are in the financial statements. We account for this difference by recording deferred income tax assets and liabilities using the effective income tax rate at our balance sheet date.
Income tax liabilities are allocated to TEP based on TEP's taxable income and deductions as reported in the FortisUS, Inc. consolidated tax return.
A valuation allowance is established against deferred tax assets for which management believes it is more likely than not that the deferred asset will not be realized. In making this judgment, management evaluates all available evidence and gives more weight to objective verifiable evidence. At December 31, 2014,2015, TEP had a $2$4 million valuation allowance. See Note 1112 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information.

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS
In April 2014, the FASB issued anFor a discussion of new accounting standards update that limits the circumstances under which a disposal may be reported as a discontinued operation and requires new disclosures. This guidance will be effectivepronouncements affecting TEP, refer to Note 13 of Notes to Consolidated Financial Statements in the first quarter of 2015. We do not expect the adoptionItem 8 of this guidance to have an impact on the presentation of our financial statements or our disclosures.
In May 2014, the FASB issued an accounting standards update that will eliminate the transaction- and industry-specific revenue recognition guidance under current U.S. GAAP and replace it with a principles based approach for determining revenue recognition. We will be required to adopt the new guidance retrospectively for annual and interim periods beginning January 1, 2017; early adoption is not permitted. We are evaluating the impact to our financial statements and disclosures.
In August 2014, the FASB issued guidance about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and provide related disclosures. This update is effective for annual and interim periods beginning January 1, 2017; early adoption is permitted. TEP does not expect the adoption of this guidance to have an impact on its disclosures.Form 10-K.


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ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Market Risks
TEP’s primary market risks include fluctuations in interest rates, returns on marketable securities, commodity prices and volumes, and counterparty credit. Fluctuations in interest rates can affect earnings and cash flows. We enter into interest rate swaps and financing transactions to manage changes in interest rates. Fluctuations in commodity prices and volumes and counterparty credit losses may temporarily affect cash flows, but are not expected to affect earnings due to expected recovery through regulatory mechanisms.
See Forward-Looking Information.Information for additional information.
Risk Management Committee
We have a Risk Management Committee responsible for the oversight of commodity price risk and credit risk related to the wholesale energy marketing and power procurement activities of TEP. Our Risk Management Committee, which meets on a quarterly basis and as needed, consists of officers from the finance, accounting, legal, wholesale marketing, and generation operations departments of TEP. To limit TEP’s exposure to commodity price risk, the Risk Management Committee sets trading and hedging policies and limits, which are reviewed frequently to respond to constantly changing market conditions. To limit

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TEP’s exposure to credit risk, the Risk Management Committee reviews counterparty credit exposure as well as credit policies and limits.
Interest Rate Risk
Long-Term Debt
TEP is exposed to interest rate risk resulting from changes in interest rates on certain of its variable rate debt obligations. TEP had $215$137 million at December 31, 2014 in tax-exempt variable rate debt outstanding.outstanding at December 31, 2015. The outstanding debt included one series of bonds for which interest rates on TEP’s tax-exempt variable rate debt are reset weekly orand one series of bonds for which interest rates are reset monthly. The weighted average weekly rate on TEP's weekly variable rate debt (including letter of creditLOC fees and remarketing fees) was 1.24% in 2015 and 1.46% in 2014 and 1.59% in 2013.2014. The average weekly interest rate ranged from 1.4% to0.93% - 1.42% in 2015 and 1.40% - 1.75% in 2014 and 1.43% to 1.78% during 2013.2014. The average monthly rate on TEP’s monthly variable rate debt (issued in November 2013 andis based on a percentage of an index equal to one-month LIBOR plus a bank margin rate)credit spread. The average monthly rate was 0.81% in 2015 and 0.87% in 2014. The ratesmonthly rate ranged from 0.79% - 0.87% in 2015 and 0.85% to- 0.95% in 2014.
Although short-term interest rates were low and stable in 20142015 and 2013,2014, TEP may still be subject to volatility in its tax-exempt variable rate debt. A 100 basis point increase in average interest rates on this debt, over a twelve month period, would result in a decrease in TEP’s pre-tax net income of approximately $2$1 million.
TEP can manage its exposure to variable interest rate risk by entering into interest rate swaps and financing transactions to rebalance its mix of variable rate and fixed rate long-term debt. TEP has a fixed-for-floating interest rate swap in place to hedge floating rate interest rate risk associated with a portion of its Springerville Common Facilities lease debt. The notional amount of the swap is $32$29 million at December 31, 2014.2015. The notional amount of lease debt that was unhedged as of December 31, 20142015 was $18$13 million. TEP did not have any other interest rate swaps at December 31, 2014.2015.
Interest Rate SwapsSwap
To adjust the value of TEP’s interest rate swaps,swap, classified as a cash flow hedges,hedge, to fair value in Other Comprehensive Income (Loss), TEP recorded the following net unrealized gains:
 2014 2013 2012
 Millions of Dollars
Unrealized Gains (Losses)$2
 $4
 $2
(in millions)2015 2014 2013
Net Unrealized Gains$1
 $2
 $4
Revolving Credit Facilities
TEP is subject to interest rate risk resulting from changes in interest rates on borrowings under its credit agreements. The interest paid on borrowings is variable. Revolving credit borrowings may be made on the basis of a spread over LIBOR or an Alternate Base Rate. As a result, TEP may experience significant volatility in the rates paid on LIBOR borrowings under its revolving credit facilities.
Marketable Securities Risk

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The majority of TEP’s pension plan assets, as well as assets associated with other employee benefit obligations, are investments in equity and debt securities. These investments are exposed to price fluctuations in equity markets and changes in interest rates. Of the assets held for employee benefit obligations, the pension plan assets comprise the largest portion. The pension plan assets will help fund defined retirement benefits for substantially all of our employees. Declines in the values of these assets could increase required employer contributions, which would adversely affect cash flows. Declines in values could also increase the reported pension expense, adversely affecting TEP’s results of operations.
Commodity Price Risk
TEP is exposed to commodity price risk primarily relating to changes in the market price of electricity, natural gas, and coal. This risk is mitigated through hedging practices and a PPFAC mechanism which fully recovers the actual retail fuel and purchased power costs incurred on a timely basis from TEP’s retail customers. The PPFAC mechanism has a forward component and a true-up component. The forward component of the PPFAC rate is based on forecasted fuel and purchased power costs. The true-up component reconciles actual fuel and purchased power costs with the amounts collected in the prior year and any amounts under/over-collected will be collected from/credited to customers. If the actual price of power is higher than the forecasted PPFAC rate, TEP's operating cash flows are reduced by the price difference until the subsequent 12-month period when the true-up component is adjusted to allow the recovery of this difference.

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Purchases and Sales of Energy
To manage its exposure to energy price risk, TEP enters into forward contracts to buy or sell energy at a specified price and future delivery period. Generally, TEP commits to future sales based on expected excess generating capability, forward prices and generation costs, using a diversified market approach to provide a balance between long-term, mid-term, and spot energy sales. TEP generally enters into forward purchases during its summer peaking period to ensure it can meet its load and reserve requirements, and account for other contracts and resource contingencies. TEP also enters into limited forward purchases and sales to optimize its resource portfolio and take advantage of geographical differences in price. These positions are managed on both a volumetric and dollar basis and are closely monitored using risk management policies and procedures overseen by the Risk Management Committee. For example, the risk management policies provide that TEP should not take a short physical position in the third quarter and must have owned generation backing up all physical forward sales positions at the time the sale is made. TEP’s risk management policies also place limits on the duration of transactions in both gas and power.
TEP enters into some forward contracts considered to be normal purchases and sales of electric energy and are therefore not accounted for as derivatives. TEP records revenues on its “normal sales” and expenses on its “normal purchases” in the period in which the energy is delivered. TEP also enters into forward contracts that are not considered to be “normal purchases and sales” and therefore are accounted for as derivatives. When TEP has derivative forward contracts, it marks them to market using actively quoted prices obtained from brokers for power traded over-the-counter at Palo Verde and at other southwestern U.S. trading hubs. TEP believes that these broker quotations used to calculate the mark-to-market values represent accurate measures of the fair values of TEP’s positions because of the short-term nature of TEP’s positions, as limited by risk management policies, and the liquidity in the short-term market.
Long-Term Wholesale Sales
TEP has several long-term wholesale agreements for the sale of energy. Sales under some of these agreements are based on indexed energy prices. Changes in the price of power affect TEP's revenue and income from these agreements. One such agreement with SRP requires SRP to purchase 500,000 MWh of on-peak energy per year from TEP through the end of the contract in May 2016. SRP does not pay a demand charge and the price of energy is based on a discount to the price of on-peak power on the Palo Verde Market Index. Each $5 change in the per MWh market price of on-peak power can affect annual pre-tax income by approximately $3 million.
Natural Gas
TEP is also subject to commodity price risk from changes in the price of natural gas. In addition to energy from its coal-fired facilities, TEP typically uses power purchases, supplemented by generation from its gas-fired units to meet the summer peak demands of its retail customers and to meet local reliability needs. Some of these purchased power contracts are indexed to natural gas prices. Short-term and spot power purchase prices are also closely correlated to natural gas prices. Due to its increasing gas and purchased power usage, TEP hedges a portion of its total natural gas exposure from plant fuel, gas-indexed power purchases, and spot market purchases with various instruments up to three years in advance. TEP purchases its remaining gas fuel and power needs in the spot and short-term markets.
As required by fair value accounting rules, for the year ended December 31, 2014,2015, TEP considered the impact of non-performance risk in the measurement of fair value of its derivative assets and derivative liabilities net of collateral posted.

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To adjust the value of its commodity derivatives to fair value, inTEP adjusted regulatory assets or regulatory liabilities TEP recorded the following net unrealized gains (losses):as follows:
 2014 2013 2012
 Millions of Dollars
Unrealized Net Gain (Loss) Recorded to Regulatory (Assets)/Liabilities$(18) $
 $6
(in millions)2015 2014 2013
Unrealized Net Gain (Loss) Recorded to Regulatory (Assets) Liabilities$6
 $(18) $
The charttable below displays the valuation methodologies and maturities of TEP’s power and gas derivative contracts.contracts by source of fair value:
Unrealized Gain (Loss) of TEP’s Hedging ActivitiesUnrealized Gain (Loss) of TEP’s Hedging Activities
Source of Fair Value at December 31, 2014
Maturity 0 – 6
months
 
Maturity 6 – 12
months
 
Maturity
over 1 yr.
 
Total
Unrealized
Gain (Loss)
Millions of Dollars
Maturity 0 – 6
months
 
Maturity 6 – 12
months
 
Maturity
over 1 yr.
 
Total
Unrealized
Gain (Loss)
(in millions)December 31, 2015
Prices Actively Quoted$(4) $(11) $(3) $(18)$(7) $(1) $(2) $(10)
Prices Based on Models and Other Valuation Methods(1) 
 
 (1)
Total$(8) $(1) $(2) $(11)

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Sensitivity Analysis of Derivatives
TEP uses sensitivity analysis to measure the impact of favorable and unfavorable changes in market prices on the fair value of its derivative forward contracts. TEP records unrealized gains and losses as either a regulatory asset or regulatory liability. As contracts settle, the unrealized gains and losses are reversed and realized gains or losses are recorded to the PPFAC. For TEP's non-cash flow power hedges, a 10% change in the market price of power would affect unrealized positions reported as a regulatory asset or regulatory liability by approximately $2$1 million; for gas swaps and collarscollar contracts, a 10% change in the market price of energy would affect unrealized positions reported as a regulatory asset or liability by approximately $4$3 million.
Coal
TEP is subject to commodity price risk from changes in the price of coal used to fuel its coal-fired generating plants. This risk is mitigated through a PPFAC mechanism which allows for the recoveryuse of costs from retail customers.long term coal supply agreements with limited price volatility.
TEP's coal supply contract for Springerville Units 1 and 2 expires in 2020.2020, at which time a new coal purchase agreement will be negotiated. TEP expects coal reserves from the Lee Ranch - El Segundo mine, which supplies Springerville Units 1 and 2 to be sufficient to supply the estimated requirements for Units 1 and 2 for theirthe units presently estimated remaining lives. The current coal price is determined by the cost of Powder River Basin coal delivered to Springerville Unit 3 subject to a floor and ceiling.
While TEP has an existing coal inventory, we do not have a long-term coal supply contract for Sundt Unit 4. Prior to 2010, Sundt Unit 4 was predominantly fueled by coal; however, the generating station can also be operated with natural gas. Since 2010, TEP has fueled Sundt Unit 4 with both coal and natural gas depending on which resource is most economic.
TEP participates in jointly-owned generating facilities at Four Corners, Navajo, and San Juan, where coal supplies are received under contracts administered by the operating agents. The coal contracts at Four Corners and Navajo expire in 2031 and 2019, respectively. The currentnew coal supply contract with Westmoreland for San Juan, effective January 31, 2016, expires onin 2022. At December 31, 2017.2015, TEP and other San Juan owners are currently negotiating agreements concerning the future San Juan fuel supply. If the Participants are unable to negotiate an economic fuel supply, the continued operation of San Juan could be jeopardized resulting in the retirement of San Juan Unit 1 earlier than expected.
Thehad contracts to purchase coal for use at the jointly-owned facilities require TEP to purchase minimum amounts of coal at anand expected its estimated average annual cost of $31 million for the next three years to be $51 million and $19$22 million thereafter through 2031. Contemporaneous with the new San Juan coal supply contract in January 2016, additional estimated minimum purchase obligations are $21 million in 2016, $23 million in 2017, $24 million in 2018 and 2019, $23 million in 2020, and $22 million through the end of the contract.
See Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Liquidity and Capital Resources Contractual Obligationsand Note 67 of Notes to Consolidated Financial Statements.Statements in Item 8 of this Form 10-K for additional information.
Credit Risk
TEP is exposed to credit risk in its energy-related marketing activities related to potential non-performance by counterparties. We manage the risk of counterparty default by performing financial credit reviews, setting limits, monitoring exposures, requiring collateral when needed, and using standard agreements which allow for the netting of current period exposures to and from a single counterparty. We calculate counterparty credit exposure by adding any outstanding receivable (net of amounts payable if a netting agreement exists) to the mark-to-market value of any forward contracts. If exposure exceeds credit limits or contractual collateral thresholds, we may request that a counterparty provide credit enhancement in the form of cash collateral or a letter of credit.an LOC.
TEP has entered into short-term and long-term transactions with several financial institution counterparties with terms of one month through fivethree years. As of December 31, 2014,2015, the credit exposure to TEP from financial institution counterparties was less than $1.7$1 million.

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As of December 31, 2014,2015, TEP’s total credit exposure related to its wholesale marketing and gas hedging activities was approximately $12$10 million. TEP had one non-investment grade counterparty with exposure of greater than 10% of its total credit exposure. TEP’s totaldid not have any exposure to non-investment grade counterparties was $1 million.counterparties.
At December 31, 2014,2015, TEP posted no cash collateral and less than $1 million in LOCs as credit enhancements with its counterparties, and did not hold any collateral from its counterparties.


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ITEM 8. CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
Management’s Report on Internal ControlsControl Over Financial Reporting
TEP’s management is responsible for establishing and maintaining adequate internal control over financial reporting. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Management assessed the effectiveness of TEP’s internal control over financial reporting as of December 31, 2014.2015. In making this assessment, management used the criteria set forth by the 2013 COSO Internal Control – Integrated Framework.
Based on management’s assessment using those criteria, management has concluded that, as of December 31, 2014,2015, TEP’s internal control over financial reporting was effective.


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Report of Independent Registered Public Accounting Firm
To the Board of Directors and Shareholder of Tucson Electric Power Company:
We have audited the accompanying consolidated balance sheetsheets of Tucson Electric Power Company and subsidiaries as of December 31, 2015 and 2014, and the related consolidated statements of income, comprehensive income, capitalization,changes in stockholder’s equity and cash flows for each of the year then ended. Our audit also includedtwo years in the financial statement schedules as atperiod ended December 31, 2014 and for the year then ended listed in the Index at Item 15(a)(1) and 15(a)(2).2015. These financial statements and schedules are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements and schedules based on our audit.audits.
We conducted our auditaudits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. We were not engaged to perform an audit of the Company’s internal control over financial reporting. Our auditaudits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our auditaudits provided a reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Tucson Electric Power Company and subsidiaries at December 31, 2015 and 2014, and the consolidated results of their operations and their cash flows for each of the year thentwo years in the period ended December 31, 2015, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedules, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.
/s/ Ernst & Young LLP
Ernst & Young LLP
Calgary, Canada
02/19/15February 18, 2016

4643


Report of Independent Registered Public Accounting Firm
To the Board of Directors and Stockholder of
Tucson Electric Power Company:Company
In our opinion, the consolidated balance sheet and statement of capitalization as of December 31, 2013 and the related consolidated statements of income, comprehensive income, cash flows, and changes in stockholder’s equity and cash flows for each of the two years in the periodyear ended December 31, 2013 present fairly, in all material respects, the financial positionresults of operations and cash flows of Tucson Electric Power Company and its subsidiaries at December 31, 2013, andfor the results of their operations and their cash flows for each of the two years in the periodyear ended December 31, 2013, in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule for each of the two years in the period ended December 31, 2013 presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. These financial statements and financial statement schedule are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements and financial statement schedulebased on our audits.audit. We conducted our auditsaudit of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provideaudit provides a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP 
PricewaterhouseCoopers LLP 
Phoenix, Arizona 
February 25, 2014, except for the effects of the revision discussed in Note 1 (not presented herein) to the consolidated financial statements appearing under Item 8 of the Company’s 2014 annual report on Form 10-K, as to which the date is August 14, 2014



4744


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF INCOME
(Amounts in thousands)
Years Ended December 31,
2014 2013 2012Year Ended December 31,
Thousands of Dollars2015 2014 2013
Operating Revenues          
Electric Retail Sales$970,145
 $934,357
 $915,879
$1,021,543
 $970,145
 $934,357
Electric Wholesale Sales158,323
 132,500
 111,194
167,020
 158,323
 132,500
Other Revenues141,433
 129,833
 134,587
117,981
 141,433
 129,833
Total Operating Revenues1,269,901
 1,196,690
 1,161,660
1,306,544
 1,269,901
 1,196,690
Operating Expenses          
Fuel297,537
 325,903
 318,901
305,559
 297,537
 325,903
Purchased Power152,922
 112,452
 80,137
124,764
 152,922
 112,452
Transmission and Other PPFAC Recoverable Costs18,179
 12,233
 5,722
24,798
 18,179
 12,233
Increase (Decrease) to Reflect PPFAC Recovery Treatment(11,194) (12,458) 31,113
39,787
 (11,194) (12,458)
Total Fuel and Purchased Energy457,444
 438,130
 435,873
Total Fuel and Purchased Power494,908
 457,444
 438,130
Operations and Maintenance378,877
 335,321
 334,553
345,356
 378,877
 335,321
Depreciation126,520
 118,076
 110,931
138,093
 126,520
 118,076
Amortization28,567
 31,294
 39,493
19,261
 28,567
 31,294
Taxes Other Than Income Taxes47,805
 43,498
 40,323
49,623
 47,805
 43,498
Total Operating Expenses1,039,213
 966,319
 961,173
1,047,241
 1,039,213
 966,319
Operating Income230,688
 230,371
 200,487
259,303
 230,688
 230,371
Other Income (Deductions)          
Interest Income208
 120
 136
93
 208
 120
Other Income8,598
 5,770
 3,953
6,647
 8,598
 5,770
Other Expense(12,735) (10,715) (13,574)(2,833) (12,735) (10,715)
Appreciation in Fair Value of Investments1,371
 2,833
 1,892
Appreciation (Depreciation) in Value of Investments(142) 1,371
 2,833
Total Other Income (Deductions)(2,558) (1,992) (7,593)3,765
 (2,558) (1,992)
Interest Expense          
Long-Term Debt60,577
 56,378
 55,038
61,159
 60,577
 56,378
Capital Leases10,249
 25,140
 33,613
3,994
 10,249
 25,140
Other Interest Expense810
 87
 1,446
1,134
 810
 87
Interest Capitalized(3,755) (2,554) (1,782)(2,732) (3,755) (2,554)
Total Interest Expense67,881
 79,051
 88,315
63,555
 67,881
 79,051
Income Before Income Taxes160,249
 149,328
 104,579
199,513
 160,249
 149,328
Income Tax Expense57,911
 47,986
 39,109
71,719
 57,911
 47,986
Net Income$102,338
 $101,342
 $65,470
$127,794
 $102,338
 $101,342
See Notes to Consolidated Financial Statements.The accompanying notes are an integral part of these financial statements.


4845



TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in thousands)
  
 Years Ended December 31,
 2014 2013 2012
 Thousands of Dollars
Comprehensive Income     
Net Income$102,338
 $101,342
 $65,470
Other Comprehensive Income     
Net Changes in Fair Value of Cash Flow Hedges, net of income tax (expense) benefit of $(1,140), $(1,793), and $(887).1,675
 2,738
 1,354
Supplemental Executive Retirement Plan (SERP) Net Unrealized Loss and Prior Service Cost, net of income tax (expense) benefit of $1,068, $(572), and $608.(1,725) 916
 (840)
Total Other Comprehensive Income (Loss), Net of Taxes(50) 3,654
 514
Total Comprehensive Income$102,288
 $104,996
 $65,984
 Year Ended December 31,
 2015 2014 2013
Comprehensive Income     
Net Income$127,794
 $102,338
 $101,342
Other Comprehensive Income (Loss)     
Net Changes in Fair Value of Cash Flow Hedges:     
Net of Income Tax (Expense) Benefit of ($821), ($1,140), and ($1,793)1,261
 1,675
 2,738
Supplemental Executive Retirement Plan Adjustments:     
Net of Income Tax (Expense) Benefit of ($63), $1,068, and ($572)101
 (1,725) 916
Total Other Comprehensive Income (Loss), Net of Tax1,362
 (50) 3,654
Total Comprehensive Income$129,156
 $102,288
 $104,996
See Notes to Consolidated Financial Statements.The accompanying notes are an integral part of these financial statements.


4946


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Amounts in thousands)
Year Ended December 31,Year Ended December 31,
2014 2013 20122015 2014 2013
Thousands of Dollars
Cash Flows from Operating Activities     
Net Income$102,338
 $101,342
 $65,470
$127,794
 $102,338
 $101,342
Adjustments to Reconcile Net Income     
To Net Cash Flows from Operating Activities     
Adjustments to Reconcile Net Income To Net Cash Flows from Operating Activities:     
Depreciation Expense126,520
 118,076
 110,931
138,093
 126,520
 118,076
Amortization Expense28,567
 31,294
 39,493
19,261
 28,567
 31,294
Amortization of Deferred Debt-Related Costs included in Interest Expense2,626
 2,452
 2,227
Amortization of Debt Issuance Costs3,043
 2,626
 2,452
Provision for Springerville Unit 1 - Third-Party Owners Unrealized Revenue22,627
 
 
Use of Renewable Energy Credits for Compliance17,818
 15,990
 5,071
19,731
 17,818
 15,990
Deferred Income Taxes62,609
 59,199
 45,232
72,026
 59,024
 58,100
Pension and Retiree Expense13,648
 19,878
 19,289
18,588
 13,648
 19,878
Pension and Retiree Funding(14,388) (27,636) (25,899)(30,682) (14,388) (27,636)
Share-Based Compensation Expense5,010
 2,709
 2,029
Allowance for Equity Funds Used During Construction(6,677) (4,526) (2,840)(5,352) (6,677) (4,526)
LFCR Revenue(11,327) (2,171) 
Increase (Decrease) to Reflect PPFAC Recovery(11,194) (12,458) 31,113
LFCR and DSM Revenues(14,646) (12,937) (2,575)
Increase (Decrease) to Reflect PPFAC Recovery Treatment39,787
 (11,194) (12,458)
Fortis Acquisition Direct Customer Benefit18,870
 
 

 18,870
 
PPFAC Reduction - 2013 TEP Rate Order
 3,000
 
Changes in Assets and Liabilities which Provided (Used)     
Cash Exclusive of Changes Shown Separately     
Change in Current Assets and Current Liabilities:     
Accounts Receivable(14,599) (6,041) (871)(25,690) (14,261) 824
Materials and Fuel Inventory666
 16,145
 (38,384)
Materials, Supplies, and Fuel Inventory(8,758) 666
 16,145
Accounts Payable10,712
 334
 1,115
(23,149) 10,712
 334
Interest Accrued(377) 4,859
 8,055
Taxes Other Than Income Taxes1,625
 1,425
 905
Current Regulatory Liabilities8,388
 3,331
 (3,040)
Other(27,172) 18,989
 8,023
Net Cash Flows – Operating Activities313,663
 346,191
 267,919
Regulatory Liabilities(2,977) 8,388
 3,331
Other, Net15,238
 (16,057) 25,620
Net Cash Flows—Operating Activities364,934
 313,663
 346,191
Cash Flows from Investing Activities          
Capital Expenditures(323,524) (252,848) (252,782)(333,841) (323,524) (252,848)
Purchase of Gila River Unit 3(163,938) 
 

 (163,938) 
Purchase of Springerville Coal Handling Facilities Lease Assets(120,312) 
 
Purchase of Springerville Unit 1 Lease Assets(19,608) 
 
(45,753) (19,608) 
Purchase of Intangibles—Renewable Energy Credits(28,334) (23,280) (8,889)
Proceeds from Sale of Springerville Coal Handling Facilities23,656
 
 
Purchase of Intangibles - Renewable Energy Credits(29,184) (28,334) (23,280)
Return of Investments in Springerville Lease Debt
 9,104
 19,278

 
 9,104
Contributions in Aid of Construction15,903
 3,959
 9,982
4,517
 15,903
 3,959
Other, net1,863
 3,403
 4,530
Other, Net(1,974) 1,863
 3,403
Net Cash Flows—Investing Activities(517,638) (259,662) (227,881)(502,891) (517,638) (259,662)
Cash Flows from Financing Activities          
Proceeds from Borrowings Under Revolving Credit Facilities275,000
 78,000
 189,000
148,000
 275,000
 78,000
Repayments of Borrowings Under Revolving Credit Facilities(190,000) (78,000) (199,000)(233,000) (190,000) (78,000)
Proceeds from Borrowings Under Term Loan130,000
 
 
Repayments of Borrowings Under Term Loan(130,000) 
 
Proceeds from Issuance of Long-Term Debt149,168
 
 149,513
299,019
 149,168
 
Repayments of Long-Term Debt(208,600) 
 
Dividends Paid to Parent(50,000) (40,000) (40,000)
Payments of Capital Lease Obligations(165,145) (99,621) (89,452)(13,464) (165,145) (99,621)
Dividends Paid to UNS Energy(40,000) (40,000) (30,000)
Repayments of Long-Term Debt
 
 (6,535)
Payment of Debt Issue/Retirement Costs(1,856) (1,865) (3,547)(3,942) (1,856) (1,865)
Equity Investment from UNS Energy225,000
 
 
Other, net643
 549
 2,008
Contribution from Parent180,000
 225,000
 
Other, Net1,458
 643
 549
Net Cash Flows—Financing Activities252,810
 (140,937) 11,987
119,471
 252,810
 (140,937)
Net Increase (Decrease) in Cash and Cash Equivalents48,835
 (54,408) 52,025
(18,486) 48,835
 (54,408)
Cash and Cash Equivalents, Beginning of Year25,335
 79,743
 27,718
Cash and Cash Equivalents, End of Year$74,170
 $25,335
 $79,743
Cash and Cash Equivalents, Beginning of Period74,170
 25,335
 79,743
Cash and Cash Equivalents, End of Period$55,684
 $74,170
 $25,335
See Note 9The accompanying notes are an integral part of Notes to Consolidated Financial Statements for supplemental cash flow information.
See Notes to Consolidated Financial Statements.

these financial statements.

5047


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED BALANCE SHEETS
(Amounts in thousands, except share data)
December 31,
2014 2013December 31,
Thousands of Dollars2015 2014
ASSETS      
Utility Plant      
Plant in Service$5,175,148
 $4,467,667
$5,618,435
 $5,175,148
Utility Plant Under Capital Leases667,157
 637,957
131,705
 667,157
Construction Work in Progress109,070
 180,485
102,028
 109,070
Total Utility Plant5,951,375
 5,286,109
5,852,168
 5,951,375
Less Accumulated Depreciation and Amortization(2,052,216) (1,826,977)(2,194,301) (2,052,216)
Less Accumulated Amortization of Capital Lease Assets(473,969) (514,677)(99,638) (473,969)
Total Utility Plant—Net3,425,190
 2,944,455
Total Utility Plant, Net3,558,229
 3,425,190
   
Investments and Other Property   39,569
 37,599
Investments in Lease Equity
 36,194
Other37,599
 33,488
Total Investments and Other Property37,599
 69,682
   
Current Assets      
Cash and Cash Equivalents74,170
 25,335
55,684
 74,170
Accounts Receivable—Customer93,521
 80,211
Unbilled Accounts Receivable36,804
 34,369
Allowance for Doubtful Accounts(4,885) (4,825)
Accounts Receivable—Due from Affiliates5,382
 6,064
Accounts Receivable, Net136,682
 131,799
Fuel Inventory34,600
 36,368
Materials and Supplies86,750
 75,200
94,003
 86,750
Deferred Income Taxes—Current102,006
 70,722
Fuel Inventory36,368
 44,027
Regulatory Assets—Current69,383
 42,555
Regulatory Assets51,841
 69,383
Derivative Instruments1,633
 2,137
1,808
 1,633
Assets Held for Sale, Net21,550
 
Other22,848
 12,923
25,904
 21,010
Total Current Assets523,980
 388,718
422,072
 421,113
Regulatory and Other Assets      
Regulatory Assets—Noncurrent223,192
 141,030
Regulatory Assets212,312
 223,192
Derivative Instruments300
 167
430
 300
Other Assets22,161
 19,233
Other16,866
 12,436
Total Regulatory and Other Assets245,653
 160,430
229,608
 235,928
Total Assets$4,232,422
 $3,563,285
$4,249,478
 $4,119,830
See Notes to Consolidated Financial Statements.The accompanying notes are an integral part of these financial statements.

(Continued)


5148


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED BALANCE SHEETS
(Amounts in thousands, except share data)
December 31,
2014 2013December 31,
Thousands of Dollars2015 2014
CAPITALIZATION AND OTHER LIABILITIES      
Capitalization      
Common Stock Equity$1,215,779
 $925,923
Common Stock Equity:   
Common Stock (No Par Value, 75,000,000 Shares Authorized, 32,139,434 Shares Outstanding at December 31, 2015 and 2014)$1,296,539
 $1,116,539
Capital Stock Expense(6,357) (6,357)
Accumulated Earnings189,317
 111,523
Accumulated Other Comprehensive Loss(4,564) (5,926)
Total Common Stock Equity1,474,935
 1,215,779
Preferred Stock (No Par Value, 1,000,000 Shares Authorized, None Outstanding at December 31, 2015 and 2014)
 
Capital Lease Obligations69,438
 131,370
55,324
 69,438
Long-Term Debt1,372,414
 1,223,070
Long-Term Debt, Net1,451,720
 1,361,828
Total Capitalization2,657,631
 2,280,363
2,981,979
 2,647,045
Current Liabilities      
Current Obligations Under Capital Leases173,822
 186,056
14,114
 173,822
Borrowings Under Revolving Credit Facilities85,000
 

 85,000
Accounts Payable—Trade110,480
 88,556
Accounts Payable—Due to Affiliates2,933
 9,153
Accounts Payable86,274
 113,413
Accrued Taxes Other than Income Taxes36,110
 34,485
37,577
 36,110
Accrued Employee Expenses15,679
 24,454
27,718
 15,679
Regulatory Liabilities—Current38,847
 23,701
Accrued Interest21,021
 22,785
14,246
 21,021
Regulatory Liabilities53,077
 38,847
Customer Deposits20,339
 21,354
20,349
 20,339
Derivative Instruments18,874
 5,531
12,174
 18,874
Other9,673
 9,244
7,533
 9,673
Total Current Liabilities532,778
 425,319
273,062
 532,778
Deferred Credits and Other Liabilities   
Deferred Income Taxes—Noncurrent491,546
 428,103
Regulatory Liabilities—Noncurrent321,186
 263,270
Regulatory and Other Liabilities   
Deferred Income Taxes, Net468,024
 389,540
Regulatory Liabilities307,286
 321,186
Pension and Other Postretirement Benefits138,319
 84,936
120,336
 138,319
Derivative Instruments6,288
 5,161
4,067
 6,288
Other84,674
 76,133
94,724
 84,674
Total Deferred Credits and Other Liabilities1,042,013
 857,603
Commitments, Contingencies & Environmental Matters (Note 6)
 
Total Regulatory and Other Liabilities994,437
 940,007
   
Commitments and Contingencies
 
   
Total Capitalization and Other Liabilities$4,232,422
 $3,563,285
$4,249,478
 $4,119,830
See Notes to Consolidated Financial Statements.The accompanying notes are an integral part of these financial statements.

(Concluded)


52


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF CAPITALIZATION
      December 31,
      2014 2013
       Thousands of Dollars
COMMON STOCK EQUITY        
Common Stock-No Par Value     $1,116,539
 $888,971
  2014 2013    
Shares Authorized 75,000,000
 75,000,000
    
Shares Outstanding 32,139,434
 32,139,434
    
Capital Stock Expense     (6,357) (6,357)
Accumulated Earnings     111,523
 49,185
Accumulated Other Comprehensive Loss     (5,926) (5,876)
Total Common Stock Equity     1,215,779
 925,923
PREFERRED STOCK        
No Par Value, 1,000,000 Shares Authorized, None Outstanding     
 
CAPITAL LEASE OBLIGATIONS        
Springerville Unit 1     42,925
 192,871
Springerville Coal Handling Facilities     117,573
 27,878
Springerville Common Facilities     82,762
 96,677
Total Capital Lease Obligations     243,260
 317,426
Less Current Maturities     173,822
 186,056
Total Long-Term Capital Lease Obligations     69,438
 131,370
LONG-TERM DEBT        
  Maturity Interest Rate    
Variable Rate Bonds 2022 - 2032 Variable 214,830
 214,802
Fixed Rate Bonds 2020 - 2044 3.85% – 5.75% 1,157,584
 1,008,268
Total Long-Term Debt     1,372,414
 1,223,070
Total Capitalization     $2,657,631
 $2,280,363
See Notes to Consolidated Financial Statements.


5349



TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTSTATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY
(Amounts in thousands)
Common
Stock
 Capital
Stock Expense
 Accumulated Earnings (Deficit) Accumulated
Other
Comprehensive
Loss
 Total
Stockholder's Equity
Common
Stock
 
Capital
Stock
Expense
 
Accumulated
Earnings
(Deficit)
 Accumulated
Other
Comprehensive
Loss
 
Total
Stockholder's
Equity
Thousands of Dollars
Balances at December 31, 2011$888,971
 $(6,357) $(47,627) $(10,044) $824,943
Net Income    65,470
   65,470
Other Comprehensive Loss, net of tax      514
 514
Dividends Declared

   (30,000)   (30,000)
Balances at December 31, 2012888,971
 (6,357) (12,157) (9,530) 860,927
$888,971
 $(6,357) $(12,157) $(9,530) $860,927
Net Income    101,342
   101,342
    101,342
   101,342
Other Comprehensive Income, net of tax      3,654
 3,654
Dividends Declared    (40,000)   (40,000)
Other Comprehensive Income (Loss), Net of Tax      3,654
 3,654
Dividends Declared to Parent

   (40,000)   (40,000)
Balances at December 31, 2013888,971
 (6,357) 49,185
 (5,876) 925,923
888,971
 (6,357) 49,185
 (5,876) 925,923
Net Income    102,338
   102,338
    102,338
   102,338
Other Comprehensive Income, net of tax      (50) (50)
Dividends Declared    (40,000)   (40,000)
Other Comprehensive Income (Loss), Net of Tax      (50) (50)
Dividends Declared to Parent    (40,000)   (40,000)
Contribution from Parent225,000
       225,000
225,000
       225,000
Other2,568
       2,568
2,568
       2,568
Balances at December 31, 2014$1,116,539
 $(6,357) $111,523
 $(5,926) $1,215,779
1,116,539
 (6,357) 111,523
 (5,926) 1,215,779
Net Income    127,794
   127,794
Other Comprehensive Income (Loss), Net of Tax      1,362
 1,362
Dividends Declared to Parent    (50,000)   (50,000)
Contribution from Parent180,000
       180,000
Balances at December 31, 2015$1,296,539
 $(6,357) $189,317
 $(4,564) $1,474,935
See Notes to Consolidated Financial Statements.The accompanying notes are an integral part of these financial statements.


5450

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



NOTE 1. NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION
Tucson Electric Power Company (TEP) is a regulated utility that generates, transmits, and distributes electricity to approximately 415,000417,000 retail electric customers in a 1,155 square mile area in southeastern Arizona. TEP also sells electricity to other utilities and power marketing entities, located primarily in the western United States. TEP is a wholly owned subsidiary of UNS Energy Corporation (UNS Energy), a utility services holding company. UNS Energy is an indirect wholly owned subsidiary of Fortis Inc. (Fortis), which is a leader.
References in the North American electricthese notes to "we" and gas utility business."our" are to TEP.
FORTIS ACQUISITION OF UNS ENERGY
UNS Energy, the parent of TEP, was acquired by Fortis for $60.25 per share of UNS Energy common stock in cash, effective August 15, 2014.
The Arizona Corporation Commission's (ACC) approval was subject to certain stipulations, including, but not limited to, the following:
TEP will provide credits on retail customers' bills totaling approximately $19 million over five years: $6 million in year one and $3 million annually in years two through five. The monthly bill credits will be applied each year from October through March effective October 1, 2014;
Dividends paid from TEP to UNS Energy cannot exceed 60 percent of TEP's annual net income for the earlier of five years or until such time that TEP's equity capitalization reaches 50 percent of total capital; and
Fortis making an equity investment of at least $220 million to UNS Energy and its regulated subsidiaries, including TEP. Following the UNS Energy acquisition, Fortis exceeded the investment requirement by contributing $287 million to UNS Energy through December 31, 2014. UNS Energy then contributed $225 million to TEP.
As a result of the Mergeracquisition being completed, TEP recorded approximately $15 million, through August 2014, as its allocated share of merger-relatedacquisition-related expenses, in addition to the customer bill credits discussed above. Merger-relatedAcquisition-related expenses, reported in Operations and Maintenance and Other Expense, include investment banker fees, legal expenses, and accelerated expenses for certain share-based compensation awards.
Completion of the Merger resulted in accelerated vesting and expense recognition of all outstanding non-vested UNS Energy See Note 9 for additional information regarding share-based awards that would otherwise have been recognized over remaining vesting periods through February 2017. TEP recognized approximately $2 million of expense in 2014 due to the accelerated vesting of the awards. TEP recorded total share-based compensation expense of $5 million for the year ended December 31, 2014, $3 million for the year ended December 31, 2013, and $2 million for the year ended December 31, 2012. In August 2014, UNS Energy settled all outstanding share-based compensation awards in cash.compensation.
BASIS OF PRESENTATION
TEP's consolidated financial statements and disclosures are presented in accordance with generally accepted accounting principlesGenerally Accepted Accounting Principles (GAAP) in the United States which includes specific accounting guidance for regulated operations. See Note 2 of Notes to Consolidated Financial Statements.for additional information regarding regulatory matters. The consolidated financial statements include the accounts of TEP and its subsidiaries. In the consolidation process, accounts of the parent and subsidiaries are combined and intercompany balances and transactions are eliminated. TEP jointly owns several generating stations and transmission facilities with non-affiliated entities. TEP's proportionate share of jointly owned facilities is recorded as Utility Plant on the consolidated balance sheets,Consolidated Balance Sheets, and our proportionate share of the operating costs associated with these facilities is included inon the consolidated statements of income. See Note 3 of Notes to Consolidated Financial Statements.for additional information regarding Utility Plant.
TEP did not reflect the impacts of acquisition accounting in its financial statements. All adjustments of assets and liabilities to fair value and the resultant goodwill associated with the Mergeracquisition were recorded by FortisUS Inc., a wholly owned subsidiary of Fortis.
As a result ofCertain amounts from prior periods have been reclassified to conform to the Merger,current year presentation. Most notably, in 2014, TEP has elected to change its method of reporting cash flows from the direct to the indirect method to conform to Fortis' presentation election.
RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS
In 2015, we adopted accounting guidance that:
limits the presentation method elected by Fortis. Certain amountscircumstances under which a disposal may be reported as a discontinued operation and requires new disclosures. The adoption of this guidance did not have any impact on our disclosures, financial condition, results of operations, or cash flows as we did not have any activities that required application of this accounting guidance.
requires debt issuance costs to be presented in the balance sheet as a direct deduction from prior periods have been reclassified to conform to the current period presentation.carrying value of the associated debt liability, rather than as deferred charges. The adoption of this standard resulted in reclassification of

5551


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



REVISION OF BALANCE SHEET AND STATEMENT OF CAPITALIZATION AS OF DECEMBER 31, 2013
debt issuance costs from Other Current Assets and Other Assets to Long-Term Debt on the Consolidated Balance Sheets. TEP revised itswill continue to account for debt issuance costs related to line-of-credit arrangements as an asset. TEP reclassified $11 million at December 31, 2013 balance sheet2014 from Other Current Assets and statementOther Assets to Long-Term Debt to conform to the current year presentation.
simplifies the presentation of capitalization to correct an immaterial error in the classification of capital lease obligations and related deferred income taxes. The correction increased current capital lease obligations and decreased noncurrent capital lease obligationstaxes by $18 million and increased currentrequiring deferred tax assets and liabilities to be classified as noncurrent deferred tax liabilities by $7 million. The notes that follow have been updated for this revision.
RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS
In 2014, we adopted accounting guidance that:
requires an entity to recognize and disclose inon the financial statements its obligation from a joint and several liability arrangement as the sum of the amount the entity agreed with its co-obligors that it will pay and any additional amount the entity expects to pay on behalf of its co-obligors.balance sheet. The adoption of this guidance did not havestandard resulted in a material impact on our disclosures, financial condition, resultsreclassification of operations, or cash flows.
impactsdeferred income taxes from Deferred Income Taxes - Current Assets to Deferred Income Taxes - Regulatory and Other Liabilities. TEP reclassified $102 million at December 31, 2014 from Deferred Income Taxes - Current Assets to Deferred Income Taxes - Regulatory and Other Liabilities to conform to the financial statement presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. Although adoption and prospective application of this guidance impacted how such items are classified on our balance sheets, such change was not material. Additionally, there were no material changes in our results of operations or cash flows.current year presentation.
USE OF ACCOUNTING ESTIMATES
Management uses estimates and assumptions when preparing financial statements under GAAP. These estimates and assumptions affect:
Assetsassets and liabilities on our balance sheets at the dates of the financial statements;
Ourour disclosures about contingent assets and liabilities at the dates of the financial statements; and
Ourour revenues and expenses in our income statements during the periods presented.
Because these estimates involve judgments based upon our evaluation of relevant facts and circumstances, actual results may differ from the estimates.
ACCOUNTING FOR REGULATED OPERATIONS
We apply accounting standards that recognize the economic effects of rate regulation. As a result, we capitalize certain costs that would be recorded as expense or in Accumulated Other Comprehensive Income (AOCI) by unregulated companies. Regulatory assets represent incurred costs that have been deferred because they are probable of future recovery in the rates charged to retail customers or to wholesale customers through transmission tariffs. Regulatory liabilities generally represent expected future costs that have already been collected from customers or itemsamounts that are expected to be returned to customers through future rate reductions.
Estimates of recovering deferred costs and returning deferred credits are based on specific ratemaking decisions or precedent for each item. Regulatory assets and liabilities are amortized consistent with the treatment in the rate setting process. We evaluate regulatory assets each period and believe recovery is probable. If future recovery of costs ceases to be probable, the assets would be written off as a charge to current period earnings or AOCI. See Note 2 of Notes to Consolidated Financial Statements.for additional information regarding regulatory matters.
TEP applies regulatory accounting as the following conditions exist:
An independent regulator sets rates;
The regulator sets the rates to recover the specific enterprise’s costs of providing service; and
Rates are set at levels that will recover the entity’s costs and can be charged to and collected from customers.
CASH AND CASH EQUIVALENTS
We consider all highly liquid investments with a remaining maturity of three months or less at acquisition to be cash equivalents.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



RESTRICTED CASH
Cash balances that are restricted regarding withdrawal or usage based on contractual or regulatory considerations are reported in Investments and Other Property—OtherProperty on the balance sheets. Restricted cash was $4 million at December 31, 2015 and $2 million at December 31, 20142014.

52



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



ALLOWANCE FOR DOUBTFUL ACCOUNTS
We record an Allowance for Doubtful Accounts to reduce accounts receivable for amounts estimated to be uncollectible. The allowance is determined based on historical bad debt patterns, retail sales, and December 31, 2013.economic conditions. Accounts receivable are charged-off in the period in which the receivable is deemed uncollectible. The change in the balance of the Allowance for Doubtful Accounts in our Consolidated Balance Sheets is summarized as follows:
 Year Ended December 31,
(in millions)2015 2014 2013
Beginning of Period$5
 $5
 $5
Increases:     
Charged to Operating Revenues23
 
 
Charged to Operating Expenses2
 2
 2
Write-offs(3) (2) (2)
End of Period$27
 $5
 $5
The Allowance for Doubtful Accounts increased in 2015 due to Third-Party Owners' claims at Springerville Unit 1. See Note 7 for additional information regarding the Third-Party Owners' claims.
INVENTORY
We value materials, supplies, and fuel inventory at the lower of weighted average cost or market, unless evidence indicates that the weighted average cost (even if in excess of market) will be recovered in retail rates. We capitalize handling and procurement costs (such as labor, overhead costs, and transportation costs) as part of the cost of the inventory. Materials and Supplies consist of generation, transmission, and distribution construction and repair materials.
UTILITY PLANT
Utility Plant includes the business property and equipment that supports electric service, consisting primarily of generation, transmission, and distribution facilities. We report utility plant at original cost. Original cost includes materials and labor, contractor services, construction overhead (when applicable), and an Allowance for Funds Used During Construction (AFUDC), less contributions in aid of construction.
We record the cost of repairs and maintenance, including planned major overhauls, to Operations and Maintenance (O&M) expense in the income statement as costs are incurred.
When a unit of regulated property is retired, we reduce accumulated depreciation by the original cost plus removal costs less any salvage value. There is no income statement impact.
AFUDC and Capitalized Interest
AFUDC reflects the cost of debt and equity funds used to finance construction and is capitalized as part of the cost of regulated utility plant. AFUDC amounts are capitalized and amortized through depreciation expense as a recoverable cost in Retail Rates. For operations that do not apply regulatory accounting, we capitalize interest related only to debt as a cost of construction. The capitalized interest that relates to debt is recorded as a reduction in Interest Expense in the income statement. The capitalized cost for equity funds is recorded as Other Income in the income statement.
The average AFUDC rates on regulated construction expenditures are included in the table below:
 2014 2013 2012
Average AFUDC Rates7.30% 7.38% 7.22%
 2015 2014 2013
Average AFUDC Rates6.12% 7.30% 7.38%
Depreciation
We compute depreciation for owned utility plant on a group method straight-line basis at depreciation rates based on the economic lives of the assets. See Note 2 and Note 3 of Notes to Consolidated Financial Statements.for additional information regarding Utility Plant. The ACC approves depreciation rates for all generation and distribution assets. Transmission assets are subject to the jurisdiction of the Federal Energy Regulatory Commission (FERC). Depreciation rates are based on average useful lives and include estimates for salvage value and removal costs.

53



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Below are the summarized average annual depreciation rates for all utility plant:
 2014 2013 2012
Average Annual Depreciation Rates2.99% 3.16% 3.22%
 2015 2014 2013
Average Annual Depreciation Rates2.83% 2.99% 3.16%
Utility Plant Under Capital Leases
TEP financedfinances the following generation assets with capital leases: Springerville Unit 1; facilities at Springerville used in common with Springerville Unit 1 and Unit 2 (Springerville Common Facilities); and the Springerville Coal Handling Facilities. with capital leases. The capital lease expense incurred consists of Amortization Expense (see Note 3 of Notes to Consolidated Financial Statements) and Interest Expense—Capital Leases. TheSee Note 3 for additional information regarding Utility Plant and Note 6 for additional information related to the lease terms are described in Note 5 of Notes to Consolidated Financial Statements.terms.
Computer Software Costs
We capitalize costs incurred to purchase and develop internal use computer software and amortize those costs over the estimated economic life of the product. If the software is no longer useful, we immediately charge capitalized computer software costs to expense.
INVESTMENTS IN LEASE EQUITY
Prior to December 2014, TEP held a 14.1% equity interest in Springerville Unit 1 and a 7% interest in certain Springerville Common Facilities (Springerville Unit 1 Leases). The fair value of these investments is described in Note 10 of Notes to Consolidated Financial Statements.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



TEP accounted for its equity interest in the Springerville Unit 1 Lease trust using the equity method. In December 2014, following the purchase of an additional undivided interest in Springerville Unit 1, TEP transferred the balance of its investment in lease equity to Plant in Service.
ASSET RETIREMENT OBLIGATIONS
TEP has identified legal Asset Retirement Obligations (AROs) related to the retirement of certain generation assets. Additionally, TEP incurred AROs related to its photovoltaic assets as a result of entering into various ground leases.leases or easement agreements. We record a liability for a legal ARO in the period in which it is incurred if it can be reasonably estimated. When a new obligation is recorded, we capitalize the cost of the liability by increasing the carrying amount of the related long-lived asset. We record the increase in the liability due to the passage of time by recognizing accretion expense in O&M expense and depreciate the capitalized cost over the useful life of the related asset or, when applicable, the terms of the lease subject to ARO requirements. Beginning July 1, 2013, TEP began deferringdefers costs associated with the majority of its legal AROs as regulatory assets because newbased on the ACC's approval of these costs in TEP's depreciation rates approved in the 2013 TEP Rate Order include these costs.rates.
Depreciation rates also include a component for estimated future removal costs that have not been identified as legal obligations. We recover those amounts in the rates charged to retail customers and have recorded an obligation for estimated costs of removal as regulatory liabilities.
EVALUATION OF ASSETS FOR IMPAIRMENT
We evaluate long-lived assets and investments for impairment whenever events or circumstances indicate the carrying value of the assets may be impaired. If expected future cash flows (without discounting) are less than the carrying value of the asset, an impairment loss is recognized if the impairment is other-than-temporary and the loss is not recoverable through rates.
DEFERRED FINANCING COSTS
We defer the costs to issue debt and amortize such costs to interest expense on a straight-line basis over the life of the debt as this approximates the effective interest method. Deferred debt issuance costs are presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability. These costs include underwriters’ commissions, discounts or premiums, and other costs such as legal, accounting, regulatory fees, and printing costs.
TEP accounts for debt issuance costs related to line-of-credit arrangements as an asset.
We defer and amortize the gains and losses on reacquired debt associated with regulated operations to interest expense over the remaining life of the original debt.
OPERATING REVENUES
We recognize revenues related to the sale of energy when services or commodities are delivered to customers. The billing of electricityelectric sales to retail customers is based on the reading of their meters, which occurs on a systematic basis throughout the month. Operating revenues include an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. At the end of the month, amounts of energy delivered since the last meter reading are estimated and the corresponding unbilled revenue is calculated using average customer Retail Rates.
For purchased power and wholesale sales contracts that are settled financially, TEP nets the sales contracts with the purchase power contracts and reflects the net amount as Electric Wholesale Sales.

54



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



TEP recognizes monthly management fees in Other Revenues as the operator of Springerville Unit 3 on behalf of Tri-State Generation and Transmission Association, Inc. (Tri-State) and Springerville Unit 4 on behalf of Salt River Project Agriculture Improvement and Power District (SRP). Additionally, Other Revenues include reimbursements from Tri-State and SRP for various operating expenses at Springerville and for the use of the Springerville Common Facilities and the Springerville Coal Handling Facilities. The offsetting expenses are recorded in the respective line items of the income statements based on the nature of services provided. As the operating agent for Tri-State and SRP, TEP may earn performance incentives based on unit availability which are recognized in Other Revenues in the period earned.
The ACC has authorized mechanisms for Lost Fixed Cost Recovery (LFCR) related to kWhkilowatt-hour (kWh) sales lost due to Energy Efficiency (EE) Standards (EE Standards) and Distributed Generation (DG).distributed generation. We recognize revenues in the period that verifiable energy savings occur. Revenue recognition related to the LFCR creates a regulatory asset until such time as the revenue is collected.
ALLOWANCE FOR DOUBTFUL ACCOUNTS
We record an Allowance for Doubtful Accounts to reduce accounts receivable for amounts estimated to be uncollectible. The allowance is determined based on historical bad debt patterns, retail sales, and economic conditions.

58



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



INVENTORY
We value materials, supplies and fuel inventory at the lower of weighted average cost or market, unless evidence indicates that the weighted average cost (even if in excess of market) will be recovered in retail rates. We capitalize handling and procurement costs (such as labor, overhead costs, and transportation costs) as part of the cost of the inventory. Materials and Supplies consist of generation, transmission, and distribution construction and repair materials.
PURCHASED POWER AND FUEL ADJUSTMENT CLAUSE
We recover actual fuel, purchased power and transmission costs to provide electric service to retail customers through base fuel rates and a Purchased Power and Fuel Adjustment Clause (PPFAC); the ACC periodically adjusts the PPFAC rate at which TEP recovers these costs. The difference between costs recovered through rates and actual fuel, purchased power, transmission, and other approved costs to provide retail electric service is deferred. Cost over-recoveries are deferred as regulatory liabilities and cost under-recoveries are deferred as regulatory assets. See Note 2 of Notes to Consolidated Financial Statements.for additional information regarding regulatory matters.
RENEWABLE ENERGY AND ENERGY EFFICIENCY PROGRAMS
The ACC’s Renewable Energy Standard (RES) requires TEP to increase its use of renewable energy each year until it represents at least 15% of its total annual retail energy requirements in 2025, with distributed generation accounting for 30% of the annual renewable energy requirement. TEP must file an annual RES implementation plan for review and approval by the ACC. The approved cost of carrying out this plan is recovered from retail customers through the RES surcharge. The ACC has also approved recovery of operating costs, depreciation, property taxes, and a return on investments in company-owned solar projects through the RES tariff until such costs are reflected in retail customer rates.
TEP is required to implement cost-effective Demand Side Management (DSM) programs to comply with the ACC’s EE Standards. The EE Standards provide for a DSM surcharge to recover, from retail customers, the costs to implement DSM programs. The Electric EE Standards require increasing annual targeted retail Kilowatt-hours (kWh)kWh savings equal to 22% by 2020.
Any RES or DSM surcharge collections above or below the costs incurred to implement the plans are deferred and reflected in the financial statements as a regulatory asset or liability. TEP recognizes RES and DSM surcharge revenue in Electric Retail Sales in amounts necessary to offset recognized qualifying expenditures.
RENEWABLE ENERGY CREDITS
The ACC measures compliance with the RES requirements through Renewable Energy Credits (RECs). A REC represents one kWh generated from renewable resources. When TEP purchases renewable energy, the premium paid above the market cost of conventional power equals the REC cost recoverable through the RES surcharge. As described above, the market cost of conventional power is recoverable through the PPFAC.
When RECs are purchased, TEP records the cost of the RECs (an indefinite-lived intangible asset) as Other Assets, and a corresponding regulatory liability, to reflect the obligation to use the RECs for future RES compliance. When RECs are reported to the ACC for compliance with RES requirements, TEP recognizes Purchased Power expense and Other Revenues in an equal amount. See Note 2 of Notes to Consolidated Financial Statements.for additional information regarding regulatory matters.
INCOME TAXES
Due to the difference between GAAP and income tax laws, many transactions are treated differently for income tax purposes than for financial statement presentation purposes. Temporary differences are accounted for by recording deferred income tax assets and liabilities on our balance sheets. These assets and liabilities are recorded using enacted income tax rates expected to be in effect when the deferred tax assets and liabilities are realized or settled. We reduce deferred tax assets by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or the entire deferred income tax asset will not be realized.
Tax benefits are recognized when it is more likely than not that a tax position will be sustained upon examination by the tax authorities based on the technical merits of the position. The tax benefit recorded is the largest amount that is more than 50%

55



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



likely to be realized upon ultimate settlement with the tax authority, assuming full knowledge of the position and all relevant facts. Interest expense accruals relating to income tax obligations are recorded in Other Interest Expense.
Prior to 1990, TEP flowed through to ratepayers certain accelerated tax benefits related to utility plant as the benefits were recognized on tax returns. Regulatory Assets – Noncurrent includesinclude income taxes recoverable through future rates, which

59



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



reflects the future revenues due to TEP from ratepayers as these tax benefits reverse. See Note 2 of Notes to Consolidated Financial Statements.for additional information regarding regulatory matters.
We account for federal energy credits generated prior to 2012 using the grant accounting model. The credit is treated as deferred revenue, which is recognized over the depreciable life of the underlying asset. The deferred tax benefit of the credit is treated as a reduction to income tax expense in the year the credit arises. Federal energy credits generated since 2012 are deferred as Regulatory Liabilities – Noncurrent and amortized as a reduction in Income Tax Expense over the tax life of the underlying asset. Income Tax Expense attributable to the reduction in tax basis is accounted for in the year the federal energy credit is generated and is deferred as regulatory assets effective July 1, 2013 due to the 2013 TEP Rate Order.assets. All other federal and state income tax credits are treated as a reduction to Income Tax Expense in the year the credit arises.
Income tax liabilities are allocated to TEP based on its taxable income as reported in the FortisUS Inc. consolidated tax return.
TAXES OTHER THAN INCOME TAXES
We act as conduits or collection agents for sales taxes, utility taxes, franchise fees, and regulatory assessments. As we bill customers for these taxes and assessments, we record trade receivables. At the same time, we record liabilities payable to governmental agencies on the balance sheet for these taxes and assessments. These amounts are not reflected in the income statements.
FAIR VALUE
As defined under GAAP, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange, and not under duress. Nonperformance or credit risk is considered in determining fair value. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange. See Note 11 for additional information regarding fair value.
DERIVATIVE INSTRUMENTS
We use various physical and financial derivative instruments, including forward contracts, financial swaps, and call and put options, to meet forecasted load and reserve requirements, to reduce our exposure to energy commodity price volatility and to hedge our interest rate risk exposure. For all derivative instruments that do not meet the normal purchase or normal sale scope exception, we recognize derivative instruments as either assets or liabilities on the consolidated balance sheetsConsolidated Balance Sheets and measure those instruments at fair value. The accounting for changes in the fair value of a derivative depends on the intended use of the derivative and the resulting designation.
Cash Flow Hedges
TEP hedges the cash flow risk associated with unfavorable changesCommodity derivatives used in the variable interest rates related to the leveraged lease arrangementsnormal business operations that are settled by physical delivery, among other criteria, are eligible for the Springerville Common Lease and variable rate industrial development revenuemay be designated as normal purchases or pollution control revenue bonds (IDBs). In addition, TEP hedges the cash flow risk associated with a long-term wholesale power supply agreement that doesnormal sales. Normal purchases or normal sales contracts are not qualify for regulatory recovery using a six-year power purchase swap agreement. TEP accounts for cash flow hedges as follows:
The effective portion of the change in therecorded at fair value is recorded in AOCI and settled amounts are recognized as cost of fuel, energy and capacity on the ineffective portion, if any, is recognized in earnings;Consolidated Statements of Income.
For our derivatives designated as hedging contracts, we formally assess, at inception and
When TEP determines a thereafter, whether the hedging contract is no longer effective in offsetting the changes in cash flow of a hedged item, TEP recognizes the change in fair value in earnings. The unrealized gains and losses at that time remain in AOCI and are reclassified into earnings as the underlying hedged transaction occurs.
We formally assess, both at the hedge’s inception and on an ongoing basis, whether the derivatives have been and are expected to remain highly effective in offsetting changes in the cash flows of hedged items.item. Also, we formally document hedging activity by transaction type and risk management strategy.
Energy Contracts - Regulatory Recovery
TEPFor our derivatives not designated as hedging contracts, the settled amount is authorized to recovergenerally included in regulated rates. Accordingly, the costs of hedging activities entered into to mitigate energy price risk for retail customers. We recordnet unrealized gains and losses associated with interim price movements on these energycontracts that are accounted for as derivatives and probable of inclusion in regulated rates are recorded as either a regulatory asset or regulatory liability to the extent they qualifyassets and liabilities. See Note 11 for recovery through the PPFAC mechanism.
Energy Contracts - No Regulatory Recovery
From time to time, TEP may enter into forward contracts with long-term wholesale customers that qualify as derivatives. We record unrealized gains and losses on these energy derivatives in the income statement as they do not qualify for regulatory recovery.
Master Netting Agreements
We have elected gross presentation for ouradditional information regarding derivative contracts under master netting agreements and collateral positions. We separate all derivatives into current and long-term portions on the balance sheet.instruments.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Normal Purchases and Normal Sales
We enter into forward energy purchase and sales contracts, including options, with counterparties that have generating capacity to support our current load forecasts or counterparties that have load serving requirements. We have elected the normal purchase or normal sales exception for these contracts which are not required to be measured at fair value and are accounted for on an accrual basis.
Commodity Trading
We did not engage in trading of derivative financial instruments for the periods presented.
PENSION AND OTHER RETIREE BENEFITS
We sponsor noncontributory, defined benefit pension plans for substantially all employees and certain affiliate employees. Benefits are based on years of service and average compensation. We also provide limited health care and life insurance benefits for retirees.
We recognize the underfunded status of our defined benefit pension plans as a liability on our balance sheets.sheet. The underfunded status is measured as the difference between the fair value of the pension plans’ assets and the projected benefit obligation for the pension plans. We recognize a regulatory asset to the extent these future costs are probable of recovery in the rates charged to retail customers and expect to recover these costs over the estimated service lives of employees.
Additionally, we maintain a Supplemental Executive Retirement Plan (SERP) for senior management. Changes in SERP benefit obligations are recognized as a component of AOCI.
Pension and other retiree benefit expenses are determined by actuarial valuations based on assumptions that we evaluate annually. See Note 8 of Notes to Consolidated Financial Statements. for additional information regarding the employee benefit plans.

NOTE 2. REGULATORY MATTERS
The ACC and the FERC each regulate portions of theTEP's utility accounting practices and rates of TEP.rates. The ACC regulates rates charged to retail customers, the siting of generation and transmission facilities, the issuance of securities, transactions with affiliated parties, and other utility matters. The ACC also enacts other regulations and policies that can affect business decisions and accounting practices. The FERC regulates terms and prices of transmission services and wholesale electricity sales.
20132015 RATE CASE
In November 2015, TEP RATE ORDERfiled a general rate case with the ACC based on a test year ended June 30, 2015. The filing requests that new rates be implemented by January 1, 2017.
The key provisions of TEP's general rate case include:
a Base Rate increase of $110 million, or 12%, compared with adjusted test year revenues;
a 7.34% return on original cost rate base of $2.1 billion;
a request to apply excess depreciation reserves against the 2013unrecovered net book value (NBV) of the San Juan Generating Station (San Juan) Unit 2 and the H. Wilson Sundt Generating Station (Sundt) Coal Handling Facilities due to early retirement;
a request for authority to begin using the Third-Party Owners' portion of Unit 1 of the Springerville Generating Station (Springerville Unit 1) that is available to TEP Rate Order, which were effective July 1, 2013, include, but are not limited to:for dispatch to serve retail customers' needs and to recover the related operating costs through the PPFAC; and
An annual increase in Base Ratesrate design changes that would reduce the reliance on volumetric sales to recover fixed costs and a new net metering tariff that would ensure that customers who install distributed generation pay an equitable price for their electric service.
TEP cannot predict the outcome of approximately $76 million.
A revision in depreciation rates from an averagethis proceeding or whether its rate of 3.32% to 3.0% for generation and distribution plant regulatedrequest will be adopted by the ACC primarily due to revised estimates of asset removal costs, which has the effect of reducing depreciation expense by approximately $11 million annually.
A LFCR mechanism that allows TEP to recover certain non-fuel costs that would otherwise go unrecovered due to reduced retail kWh sales attributed to EE programs and DG. The LFCR rate adjusts annually and is subject to ACC review and a year-over-year cap of 1% of TEP's total retail revenues.
An Environmental Compliance Adjustor (ECA) mechanism that allows TEP to recover the costs of complying with environmental standards required by federalin whole or other governmental agencies between rate cases. The ECA adjusts annually to recover environmental compliance costs and is subject to ACC approval and a cap of 0.025 cents per kWh, which approximates 0.25% of TEP's total retail revenues.in part.
COST RECOVERY MECHANISMS
TEP has received regulatory decisions that allow for more timely recovery of certain costs through the recovery mechanisms described below.
Purchased Power and Fuel Adjustment Clause
TheTEP's PPFAC rate is adjusted annually each April 1st (unless otherwise approved by the ACC) and goes into effect for the subsequent 12-month period unless modified by the ACC. The PPFAC rate includes: 1)(i) a forward component under which TEP recoversattempts to recover or refunds differencesrefund the difference between a) forecasted fuel transmission,costs and purchased power costs for the upcoming calendar year and b) those embedded in the fuel rate and the current PPFAC and fuel rates; and 2)(ii) a true-up component whichthat reconciles the difference between actual costs and those recovered in the preceding 12-month period. The PPFAC bank balance was over-collected by $18 million at December 31, 2015 and under-collected by $19 million at December 31, 2014.

6157



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



differences between actual fuel, transmission, and purchased power costs and those recovered throughThe PPFAC rates during the combination of the fuel rate and the forward component for the preceding 12-month period.periods reported were as follows:
In April 2014, the ACC approved a PPFAC rate for TEP of 0.10 cents per kWh for the period May through September 2014 and 0.50 cents per kWh for the period October 2014 through March 2015. TEP's PPFAC rate was 0.77 cents per kWh for the period of January 2013 through June 2013 and a credit of approximately 0.14 cents per kWh for the period July 2013 through April 2014.
PeriodCents per kWh
April 2015 through March 20160.68
October 2014 through March 2015 (1)
0.50
May 2014 through September 2014 (1)
0.10
July 2013 through April 2014 (2)
(0.14)
January 2013 through June 20130.77
(1)
The ACC approved a two-step increase to shift a higher level of recovery into the winter season.
(2)
The effective date of the 2012 PPFAC rate reduction was deferred to coincide with the effective date of the 2013 Rate Order.
San Juan Mine Fire Insurance Proceeds
In September 2011, a fire at the underground mine providing coal to San Juan Generating Station (San Juan) caused interruptions to mining operations and resulted in increased fuel costs. The 2013 TEP Rate Order required TEP to defer incremental fuel costs of $10 million from recovery under the PPFAC pending final resolution of an insurance claim by the San Juan Coal Company (SJCC) and distribution of insurance proceeds to San Juan participants. As of December 31, 2014, TEP has received insurance settlement proceeds of $1 million in 2015 and $8 million.million in 2014. The insurance proceeds offset the deferred fuel costs and are reflectedincluded in our cash flow statementsthe Statements of Cash Flows as an other operating cash receipt. TEP expects to recover anyactivity. The remaining $1 million of unreimbursed fuel costs not reimbursed by insurance,will be recovered through its PPFAC.
Environmental Compliance Adjustor
Thethe PPFAC, in accordance with the 2013 TEP Rate Order provided for the ECA to recover costs associated with qualified investments to comply with environmental standards required by federal or other governmental agencies. The ECA rate of 0.0049 cents per kWh became effective on May 1, 2014. TEP recognized ECA revenues of less than $1 million in 2014.Order.
Renewable Energy Standards
The ACC’s RES requires TEP is requiredand other affected utilities to expand itsincrease their use of renewable energy each year until it represents at least 15% of their total annual retail energy requirements in order2025, with distributed generation accounting for 30% of the annual renewable energy requirement. Affected utilities must file an annual RES implementation plan for review and approval by the ACC. The approved cost of carrying out the plan is recovered from retail customers through the RES surcharge until such costs are reflected in TEP’s Base Rates. The associated lost revenues attributable to meetmeeting distributed generation targets will be partially recovered through the ACC’s Renewable Energy Standards (RES).LFCR.
In July 2015, TEP is authorizedsubmitted its application for the 2016 RES implementation plan that includes a budget of $57 million, which will be partially offset by applying approximately $9 million of previously recovered carryover funds. TEP proposed to recover costs associated with meeting the RES through a customer surcharge. These costs include purchases of RECs through Power Purchase Agreements (PPAs) and Performance Based Incentives (PBIs), as well as costs associated with utility-scale ownership of solar assets until the projects can be incorporated in Base Rates.
In December 2014, the ACC approved TEP's 2015 RES plan that included a spending budget of $40$48 million with $33 million to be recovered through the RES surcharge. The budget will fund the following: (i) the above market cost of renewable energy purchases; (ii) previously awarded performance-based incentives for customer installed distributed generation; (iii) depreciation and a return on TEP's investments in company-owned solar projects; and (iv) various other program costs. TEP earned returnsexpects to receive a decision on the application in the first half of 2016. TEP expects to recognize approximately $9 million of revenue in 2016 as a return on company-owned solar investmentsprojects.
TEP met the overall 2015 RES renewable energy requirement of less than $1 million5% of retail Kilowatt-hour (kWh) sales and expects to meet the 2016 requirement of 6% of retail kWh sales. Compliance is determined through the ACC's review of TEP's annual RES implementation plan. As TEP no longer pays incentives to obtain distributed generation REC, which are used to demonstrate compliance with the distributed generation requirement, the company has requested a waiver of the RES distributed generation requirements in 2014 and $2 million in 2013.its 2016 RES implementation plan.
Energy Efficiency Standards
TEP is requiredIn 2010, the ACC approved new EE Standards designed to require electric utilities to implement cost-effective DSM programs to complyreduce customers' energy consumption. The EE Standards require increasing cumulative annual targeted retail kWh savings equal to 22% by 2020. Since the implementation of the EE Standards, TEP’s cumulative annual energy savings are approximately 9.3% of 2015 retail kWh sales. TEP’s compliance with the ACC's EE Standards. Standards is governed by the ACC’s approval of its annual implementation plan.
The EE Standards provide for a DSM surcharge for regulated utilities to recover from retail customers, the costs to implement DSM programs as well as aan annual performance incentive. ForTEP recorded $3 million in 2015, $2 million in 2014, and less than $1 million in 2013 related to performance. The performance incentive is recorded in the first quarter of the year ended December 31, 2014, TEP recorded a DSM performance incentive of $2 million thatand is included in Electric Retail Revenue inSales on the Consolidated Statements of Income.
In February 2016, the ACC approved TEP’s 2016 energy efficiency implementation plan. Under the 2016 plan, TEP income statement.has been approved to recover approximately $14 million from retail customers and will offer customers new and existing DSM

58


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



programs. Energy savings realized through the programs will count toward Arizona’s EE Standard and the associated lost revenue will be partially recovered through the LFCR.
Lost Fixed Cost Recovery Mechanism
The LFCR mechanism provides recovery of certain non-fuel costs that would go unrecovered due to lost retail kWh sales as a result of implementing ACC approved EEenergy efficiency programs and DGdistributed generation targets. TEP records a regulatory asset and recognizes LFCR revenues when the amounts are verifiable, regardless of when the lost retail kWh sales occur. For recovery of lost fixed costs,the LFCR regulatory asset, TEP is required to file an annual LFCR adjustment request with the ACC for costs related tothe LFCR revenues recognized in the prior year, andyear. The recovery is subject to a year-over-year cap of 1% of the company'sTEP's total retail revenues.
The ACC approved TEP's annual LFCR recovery request for lost fixed costs incurred in 2013 of approximately $5 million. The approved rates, of approximately 0.41% of retail revenue for EE and approximately 0.31% of retail revenue for DG, became effective August 2014.
TEP recorded in Electric Retail Sales,a regulatory asset and recognized LFCR revenues of $12 million in 2015, $11 million for the year ended December 31,in 2014, and $2 million in 2013 related to reductions in retail kWh sales for 2013the prior years. LFCR revenues are included in Electric Retail Sales on the Consolidated Statements of Income.
Appellate Review of Rate Decisions
In a 2015 appellate challenge to two ACC rate decisions regarding a water company, the Arizona Court of Appeals considered the question of how the ACC should determine a utility’s “fair value”, as specified in the Arizona Constitution, in connection with authorizing recovery of costs through rate adjustors outside of a rate case. The Court reversed the ACC’s method of finding fair value in that case, and 2014. We recognize LFCR revenue when verifiable regardlessraised questions concerning the relationship between the need for fair value findings and the recovery of whencapital and certain other utility costs through adjustors. In February 2016, the lost retail kWh sales occur.Arizona Supreme Court granted the ACC’s request for review of this decision. If the Supreme Court upholds the decision without modification, certain TEP rate adjustors may be negatively affected which could have a significant impact on TEP’s ability to recover certain costs between rate cases. TEP filed a brief in support of the ACC’s petition to the Supreme Court for review of the Court of Appeals’ decision, but cannot predict the outcome of this matter.

6259


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The following table summarizes regulatory assets and liabilities:
REGULATORY ASSETS AND LIABILITIES
 December 31, 2014 December 31, 2013
 Millions of Dollars
Regulatory Assets—Current   
Property Tax Deferrals (1)
$21
 $20
PPFAC (2)
19
 4
Derivative Instruments (Note 10)15
 1
LFCR and DSM (2)
8
 3
San Juan Mine Fire Cost Deferral (2)
2
 10
Other Current Regulatory Assets (3)
4
 5
Total Regulatory Assets—Current69
 43
Regulatory Assets—Noncurrent   
Pension and Other Retiree Benefits (Note 8)126
 75
Income Taxes Recoverable Through Future Rates (4)
31
 22
PPFAC - Final Mine Reclamation and Retiree Health Care Costs (5)
29
 25
Springerville Lease Purchase Commitment Deferrals (6)
16
 2
Unamortized Loss on Reacquired Debt (7)
6
 7
LFCR (2)
4
 
Tucson to Nogales Transmission Line (8)
4
 5
Other Regulatory Assets (3)
7
 5
Total Regulatory Assets—Noncurrent223
 141
Regulatory Liabilities—Current   
RES (2)
(28) (22)
DSM (2)
(6) 
Fortis Merger Customer Credits (9)
(5) 
Other Current Regulatory Liabilities
 (2)
Total Regulatory Liabilities—Current(39) (24)
Regulatory Liabilities—Noncurrent   
Net Cost of Removal for Interim Retirements (10)
(265) (254)
Deferred Investment Tax Credits (11)
(25) (4)
Income Taxes Payable through Future Rates (4)
(20) (5)
Fortis Merger Customer Credits (9)
(11) 
Total Regulatory Liabilities—Noncurrent(321) (263)
Total Net Regulatory Assets (Liabilities)$(68) $(103)
Regulatory assets are either being collected in Retail Rates or are expected to be collected through Retail Rates in a future period. With the exception of interest earned on under-recovered PPFAC costs and the ECA, we do not earn a return on regulatory assets. Regulatory liabilities represent items that we either expect to pay to customers through billing reductions in future periods or plan to use for the purpose for which they were collected from customers. Regulatory assets and liabilities recorded on the Consolidated Balance Sheets are summarized below:
 December 31,
(in millions)2015 2014
Regulatory Assets   
Pension and Other Retiree Benefits (Note 8)$120
 $126
Final Mine Reclamation and Retiree Health Care Costs (1)
28
 29
Income Taxes Recoverable through Future Rates (2)
26
 31
Property Tax Deferrals (3)
21
 21
Springerville Unit 1 Leasehold Improvements - Third Party Owners (4)
21
 
LFCR and DSM16
 12
Derivatives (Note 11)12
 18
PPFAC
 19
Springerville Purchase Deferrals (5)

 16
Other Regulatory Assets20
 20
Total Regulatory Assets264
 292
Less Current Portion52
 69
Total Non-Current Regulatory Assets$212
 $223
Regulatory Liabilities   
Net Cost of Removal for Interim Retirements (6)
$264
 $265
Deferred Investment Tax Credits (7)
32
 41
RES25
 28
PPFAC18
 
Other Regulatory Liabilities21
 26
Total Regulatory Liabilities360
 360
Less Current Portion53
 39
Total Non-Current Regulatory Liabilities$307
 $321
(1) 
Property Taxes are recovered over approximately a six months period asFinal Mine Reclamation and Retiree Health Care Costs represent costs are paid, rather than asassociated with TEP’s jointly-owned facilities at San Juan, Four Corners, and Navajo. TEP has the option to recognize its liability associated with final reclamation and retiree health care obligations at present or future value. TEP has elected to recognize these costs are accrued.at future value and is permitted to fully recover these costs through the PPFAC when paid. TEP expects to make continuous payments through 2037.
(2) 
Income Taxes Recoverable through Future Rates are amortized over the life of the assets. See Cost Recovery Mechanisms discussed above.Note 1 and Note 12 for additional information regarding income taxes.
(3) 
OtherProperty taxes are recorded as a regulatory assets include self-insured medical costs and short-term disability costs recoveredasset based on historical ratemaking treatment allowing regulated utilities to recover property taxes on a pay-as-you-go or cash basis; San Juan Coal Contract Amendment costs (recovery through 2017); rate case costs (recovery over three years);basis. TEP records a liability to reflect the accrual for financial reporting purposes and environmental compliance costs (recovery over one year).an offsetting regulatory asset to reflect recovery for regulatory purposes. This asset is fully recovered in rates with a recovery period of approximately six months.
(4) 
Income Taxes Recoverable through Future Revenues are amortized over the lifeUpon expiration of the assets. See NoteSpringerville Unit 1 of Notes to Consolidated Financial Statements.

63


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



(5)
Final Mine Reclamation and Retiree Health Care Costs stem from TEP’s jointly-owned facilities at the San Juan Generating Station, the Four Corners Generating Station, and the Navajo Generating Station. TEP is required to recognize the present value of its liability associated with final mine reclamation and retiree health care obligations over the life of the coal supply agreements.capital leases in January 2015, TEP recorded a regulatory asset becausefor unamortized leasehold improvement costs that relate to third-party ownership interests. These leasehold improvements, previously recorded in Plant in Service on the Consolidated Balance Sheets, represent investments TEP is permitted to fully recover these costsmade through the PPFAC whenend of the costs are invoiced bylease term to ensure that the miners.Springerville Unit 1 facilities continued providing safe, reliable service to TEP's customers. In the 2013 Rate Order, TEP expectsreceived ACC authorization to recover theseSpringerville Unit 1 leasehold improvement costs over the remaining life of the mines, which is estimated to be between 14 and 20 years.a 10-year amortization period.
(6)(5) 
TEP deferred the increase in lease interest expense relating to the purchase commitments for Springerville Unit 1 and the Springerville Coal Handling Facilities to a regulatory asset because TEP believes the full purchase price is recoverable in rate base. See Note 56 for additional information regarding the Springerville leases.

60


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



(6)
Net Cost of Notes to Consolidated Financial Statements.Removal for Interim Retirements represents an estimate of the cost of future asset retirement obligations net of salvage value. These are amounts collected through revenue for the net cost of removal of interim retirements for transmission, distribution, generation plant, and general and intangible plant which are not yet expended.
(7) 
In accordance with FERC guidelines, when TEP refinances its long-term debt, TEP defers and amortizes losses on reacquired debt over the life of the debt agreement.
(8)
TEP will request recovery from FERC for the costs incurred to develop a high-voltage transmission line from Tucson to Nogales; the project is not going forward. See Note 6 of Notes to Consolidated Financial Statements
(9)
Fortis Merger Customer Credits represent credits to be applied to customers’ bills according to the Merger Agreement. These credits will be applied to customer bills each year, October through March for a period of five years. See Note 1 of Notes to Consolidated Financial Statements.
(10)
Net Cost of Removal for Interim Retirements represents amounts recovered through depreciation rates associated with asset retirement costs expected to be incurred in the future.
(11)
TheAccumulated Deferred Investment Tax Credit relates to(ITC) represents federal energy credits generated in 2012 and isafter 2011 that are amortized over the tax life of the underlying asset.
IMPACTS OF REGULATORY ACCOUNTING
If we determine that we no longer meet the criteria for continued application of regulatory accounting, we would be required to write off our regulatory assets and liabilities related to those operations not meeting the regulatory accounting requirements. Discontinuation of regulatory accounting could have a material impact on our financial statements.

NOTE 3. UTILITY PLANT AND JOINTLY-OWNED FACILITIES
UTILITY PLANT
The following table shows Utility Plant in Service by major class:
December 31,December 31,
2014 2013
Millions of Dollars
Plant in Service:   
(in millions)2015 2014
Plant in Service   
Electric Generation Plant$2,388
 $1,889
$2,612
 $2,388
Electric Transmission Plant898
 825
1,008
 890
Electric Distribution Plant1,398
 1,298
1,456
 1,398
General Plant338
 312
358
 338
Intangible Plant - Software Costs (1) (2)
149
 141
172
 149
Intangible Plant - Transmission Rights and Other7
 8
Electric Plant Held for Future Use4
 3
5
 4
Total Plant in Service$5,175
 $4,468
$5,618
 $5,175
      
Utility Plant under Capital Leases(3)
$667
 $638
$132
 $667
(1) 
Unamortized computer software costs were $45 million and $31 million as of December 31, 2015 and 2014, and $39 million as of December 31, 2013.respectively.
(2) 
The amortization of computer software costs was $14 million in 2015, $17 million in 2014, and $14 million in 2013, and $13 million in 2012.2013.
(3) 
In 2014, TEP entered into agreements to purchasepurchased certain Springerville Coal Handling Facilitiesfacilities leased interests.interests in 2015 and 2014. See Note 5 of Notes to Consolidated Financial Statements.6 for additional information regarding the Springerville leases.

6461


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Utility Plant under Capital Leases
All utility plant under capital leases is used in generation operations and amortized over the primary lease term. See Note 5 of Notes to Consolidated Financial Statements.6 for additional information regarding capital leases. At December 31, 2014,2015, the utility plant under capital leases includes: 1)represents an undivided one-half interest in certain Springerville Unit 1; 2) Springerville Common Facilities; and 3) Springerville Coal Handling Facilities. The following table shows the amount of lease expense incurred for generation-related capital leases:
Year Ended December 31,Year Ended December 31,
2014 2013 2012
Millions of Dollars
Lease Expense:     
(in millions)2015 2014 2013
Lease Expense     
Interest Expense – Included in:          
Capital Leases$10
 $25
 $34
$4
 $10
 $25
Operating Expenses – Fuel1
 2
 3

 1
 2
Amortization of Capital Lease Assets – Included in:          
Operating Expenses – Fuel6
 5
 4
2
 6
 5
Operating Expenses – Amortization16
 15
 14
6
 16
 15
Total Lease Expense$33
 $47
 $55
$12
 $33
 $47
Utility plant depreciation rates and approximate average remaining service lives based on the most recent depreciation studies available for the major classes of Utility Plant in Service at December 31, 2014,2015, were as follows:
 December 31, 2014
 
Annual Depreciation Rate (3)
 Average Remaining Life in Years
Major Class of Utility Plant in Service:   
Electric Generation Plant (1)
3.31% 22
Electric Transmission Plant1.48% 32
Electric Distribution Plant (1)
2.08% 35
General Plant (1)
5.48% 11
Intangible Plant (2)
Various Various
 
Annual Depreciation Rate (1)
 Average Remaining Life in Years
Electric Generation Plant3.31% 22
Electric Transmission Plant1.48% 32
Electric Distribution Plant2.08% 35
General Plant5.48% 11
Intangible Plant (2)
Various Various
(1)
In June 2013, the ACC issued the 2013 TEP Rate Order that approved a change in depreciation rates which reflects changes in the remaining average useful lives for our generation, distribution, and general plant assets. See Note 2 of Notes to Consolidated Financial Statements.
(2)
The majority of TEP's investment in intangible plant represents computer software, which is being amortized over its expected useful life of three to five years for smaller application software. For large enterprise software, we use the remaining life depreciation method. At December 31, 2014, remaining lives ranged from one to six years.
(3) 
The depreciation rates represent a composite of the depreciation rates of assets within each major class of utility plant.
(2)
The majority of TEP's investment in intangible plant represents computer software. Computer software is being amortized over its expected useful life of three to five years for smaller application software and average remaining life of three to eight years for large enterprise software.
GILA RIVER ACQUISITION
In December 2014, TEP and UNS Electric, Inc. (UNS Electric) acquired Gila River Unit 3, a gas-fired combined cycle unit with a nominal capacity rating of 550 megawatts (MW) located in Gila Bend, Arizona, from a subsidiary of Entegra Power Group LLC. TEP purchased a 75% undivided interest in Gila River Unit 3 (413 MW) for $164 million, and UNS Electric purchased the remaining 25% undivided interest.
TEP’s purchase of Gila River Unit 3 was intended to replace the reduction of 195 MW of output from Springerville Unit 1 and the 170 MW of capacity expected to be retired at San Juan in 2017.
The transaction was accounted for using the acquisition method of accounting which requires that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The following table summarizes the assets acquired and liabilities assumed as of the acquisition date:
(in millions) 
Utility Plant, Net$163
Materials and Supplies2
ARO Obligation Assumed (1)
(1)
Total Purchase Price$164
(1)
The ARO obligation was recorded at net present value in Regulatory and Other Liabilities - Other on TEP's Consolidated Balance Sheets.

6562


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



JOINTLY-OWNED FACILITIES
AtIn addition to Gila River Unit 3, at December 31, 2014,2015, TEP was a participant in the following jointly-owned generating stations and transmission systems as follows:systems:
Ownership Percentage Plant in Service 
Construction Work in
Progress
 Accumulated Depreciation Net Book Value
 Millions of Dollars
(in millions)Ownership Percentage Plant in Service 
Construction Work in
Progress
 Accumulated Depreciation Net Book Value
San Juan Units 1 and 250.0% $453
 $8
 $242
 $219
50.0% $486
 $12
 $251
 $247
Navajo Units 1, 2, and 37.5% 153
 1
 112
 42
7.5% 148
 2
 112
 38
Four Corners Units 4 and 57.0% 104
 3
 77
 30
7.0% 102
 9
 77
 34
Luna Energy Facility33.3% 55
 
 2
 53
33.3% 54
 
 
 54
Gila River Unit 375.0% 186
 
 54
 132
75.0% 198
 2
 56
 144
Gila River Common Facilities18.75% 42
 
 11
 31
18.8% 25
 
 7
 18
Springerville Unit 1 (1)
49.5% 319
 8
 174
 153
Springerville Coal Handling Facility (2)
65.9% 164
 1
 65
 100
Transmission FacilitiesVarious 371
 21
 193
 199
Various 383
 1
 172
 212
Total $1,364
 $33
 $691
 $706
 $1,879
 $35
 $914
 $1,000
In December 2014, TEP completed the purchase of Gila River Unit 3. TEP jointly owns Gila River Unit 3 with UNS Electric, Inc., an affiliated subsidiary of UNS Energy (UNS Electric). See Note 7 of Notes to Consolidated Financial Statements.
(1)
TEP is obligated to operate the unit for the Third-Party Owners under existing agreements. The Owner Trustees and Co-Trustees are obligated to compensate TEP for their pro rata share of expenses. See Note 6 for additional information regarding the purchase of leased interest. See Note 7 for additional information regarding Springerville Unit 1.
(2)
TEP owns an additional 17.05% undivided interest in the Springerville Coal Handling Facilities classified as Assets Held for Sale on the Consolidated Balance Sheets. See Note 6 for additional information regarding the Springerville Coal Handling Facilities lease interests.
As participants in these jointly-owned facilities, we are responsible for itsour share of operating and capital costs for the above facilities. TEP accountsWe account for itsour share of operating expenses and utility plant costs related to these facilities using proportionate consolidation.
SpringervilleRETIREMENTS
San Juan
In October 2014, the EPA published a final rule approving a State Implementation Plan (SIP) covering BART requirements for San Juan, which includes the closure of Units 2 and 3 by December 2017.  TEP is a participant in San Juan Unit 12. Given the closure of two units and the desire of certain participants to exit their ownership in San Juan, PNM and the other participants, including TEP, negotiated restructured ownership agreements which became effective upon the sale of San Juan Coal Company’s (SJCC) stock in January 2016. As a condition of the New Mexico Public Regulatory Commission’s (NMPRC) approval of the early retirement of San Juan Units 2 and 3, PNM is required to make a filing with the NMPRC in 2018 to demonstrate the ongoing economic viability of San Juan beyond 2022. Under the new restructured ownership agreements, TEP and the other remaining participants have the option to exit their remaining ownership interest in San Juan as of June 30, 2022.
At December 31, 2015, the net book value of TEP's share in San Juan Unit 2, including construction work in progress, was $104 million. Consistent with the 2013 Rate Order, TEP has requested authorization from the ACC to apply excess depreciation reserves against the unrecovered net book value in its 2015 Rate Case. See Note 2 for additional information regarding the 2015 Rate Case.
Sundt
In June 2014, the EPA issued a final rule that would require TEP owned 24.7%to either: (i) install, by mid-2017, SNCR and dry sorbent injection if Sundt Unit 4 continues to use coal as a fuel source; or (ii) permanently eliminate coal as a fuel source as a better-than-BART alternative by the end of Springerville Unit 1 and continued2017. Under the rule, TEP is required to leasenotify the remaining portionEPA of its decision by March 2017.
At December 31, 2015, the net book value of the facility. Effective January 1,Sundt coal handling facilities was $16 million. In August 2015, following completion ofTEP exhausted its existing coal supply at Sundt and has been operating Sundt with natural gas as a primary fuel source. TEP expects to retire the purchase of an additional 24.8% leased interestSundt coal handling facilities earlier than expected, and has requested to apply excess depreciation reserves against the unrecovered net book value in Springerville Unit 1 and expiration of the lease, TEP has a 49.5% ownership interest in the Springerville Unit 1 generating station and will operate the facility on behalf of third parties, i.e. Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee under a separate trust agreement with each of the remaining two owner participants, Alterna Springerville LLC (Alterna) and LDVF1 TEP LLC (LDVF1) (Alterna and LDVF1, together with the Owner Trustees and Co-trustees, the Third-Party Owners). The Third-Party Owners are responsible for their share of operating and capital costs for the facility.its 2015 Rate Case. See Note 6 of Notes to Consolidated Financial Statements.2 for additional information regarding the 2015 Rate Case.

63


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



ASSET RETIREMENT OBLIGATIONS
The accrual of AROs is primarily related to generation and photovoltaic assets and is included in Deferred CreditsRegulatory and Other Liabilities on the balance sheets.Consolidated Balance Sheets. The following table reconciles the beginning and ending aggregate carrying amounts of ARO accruals on the balance sheets:Consolidated Balance Sheets:
December 31,December 31,
2014 2013
Millions of Dollars
Beginning Balance$22
 $14
(in millions)2015 2014
Beginning of Period$28
 $22
Liabilities Incurred5
 
4
 5
Accretion Expense or Regulatory Deferral1
 1
1
 1
Revisions to the Present Value of Estimated Cash Flows (1)

 7
(1) 
Ending Balance$28
 $22
End of Period$32
 $28
(1) 
Primarily related to changes in expected cost estimates, in conjunction with changes of asset retirement dates of generating facilities.


66

NOTE 4. ACCOUNTS RECEIVABLE
The following table presents the components of Accounts Receivable, Net on the Consolidated Balance Sheets:
 December 31,
(in millions)2015 2014
Customer$79
 $78
Due from Affiliates (Note 5)7
 5
Unbilled39
 37
Other39
 17
Allowance for Doubtful Accounts (1)
(27) (5)
Accounts Receivable, Net$137
 $132
(1)
The Allowance for Doubtful Accounts increased in 2015 due to the Third-Party Owners' claims at Springerville Unit 1. See Note 7 for additional information regarding the Third-Party Owners' claims.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



NOTE 4.5. RELATED PARTY TRANSACTIONS
TEP engages in various transactions with Fortis, UNS Energy and its affiliated subsidiaries including Unisource Energy Services, Inc. (UES), UNS Electric, UNS Gas, Inc. (UNS Gas) and Southwest Energy Solutions, Inc. (SES) (collectively, UNS Energy affiliates). These transactions include salesthe sale and purchasespurchase of power and transmission services, common cost allocations, and the provision of corporate and other labor related services. Additionally, TEP

64


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The following table presents the components of related party balances included in Accounts Receivable, Net and UNS Electric jointly own a generating station unit. See Note 7 of Notes toAccounts Payable on the Consolidated Financial Statements.Balance Sheets:
 December 31,
(in millions)2015 2014
Receivables from Related Parties   
UNS Electric$6
 $4
UNS Gas1
 1
Total Due from Related Parties$7
 $5
    
Payables to Related Parties   
SES$2
 $2
UNS Electric2
 1
UNS Energy2
 
Total Due to Related Parties$6
 $3
The following table summarizespresents the components of related party transactions:transactions included on the Consolidated Statements of Income:
Years Ended December 31,Year Ended December 31,
2014 2013 2012
Millions of Dollars
(in millions)2015 2014 2013
Wholesale Sales - TEP to UNS Electric (1)
$4
 $1
 $2
$8
 $4
 $1
Wholesale Sales - UNS Electric to TEP (1)
4
 2
 1
1
 4
 2
Control Area Services - TEP to UNS Electric (2)
3
 4
 3
2
 3
 4
Common Costs - TEP to UNS Energy Affiliates (3)
13
 12
 12
12
 13
 12
Supplemental Workforce - UNS Energy Affiliate to TEP (4)
16
 16
 17
Supplemental Workforce - SES to TEP (4)
16
 16
 16
Corporate Services - UNS Energy to TEP (5)
14
 5
 2
7
 14
 5
Corporate Services - UNS Energy Affiliates to TEP (6)
1
 1
 1
1
 1
 1
(1) 
TEP and UNS Electric sell power and transmission services to each other at prevailing market prices.
(2) 
TEP charges UNS Electric for control area services under a FERC-acceptedFERC-approved Control Area Services Agreement.
(3) 
Common costs (systems,(information systems, facilities, etc.) are allocated on a cost-causative basis and recorded as revenue by TEP. Management believes thisThe method of allocation is reasonable.deemed reasonable by management and is reviewed by the ACC as part of the rate case process.
(4) 
SES provides supplemental workforce and meter-reading services to TEP. AmountsTEP based on related party service agreements. The charges are based on costscost of services performed and management believes that the charges for the services are reasonable.deemed reasonable by management.
(5) 
Corporate costsCosts for corporate services at UNS Energy such as merger costs andinclude Fortis management fees, legal fees, and audit fees which are allocated to its subsidiaries using the Massachusetts'Massachusetts Formula, an industry accepted method of allocating common costs to affiliated entities. TEP's allocation is approximately 81% of UNS Energy's allocated costs. In 2015, these costs included approximately $5 million in Fortis management fees, which began in January 2015 following the August 2014 acquisition. In 2014, these costs included approximately $12 million in acquisition-related costs (excluding TEP allocated labor related charges).
(6) 
All Corporate ServicesCosts for corporate services (e.g., finance, accounting, tax, legal, and information technology) and other labor services for UNS Energy Affiliates are directly assigned to the benefiting entity at a fully burdened cost when possible.
CONTRIBUTION FROM PARENT
At December 31,In June 2015, UNS Energy made an equity contribution to TEP of $180 million. TEP used proceeds from the equity contribution to repay the outstanding balances under TEP's revolving credit facilities. The remaining balance of the proceeds was used to redeem bonds in August 2015 and to provide additional liquidity to TEP. See Note 6for additional information regarding the August 2015 bond redemption. TEP received contributions of $225 million from UNS Energy in 2014 and December 31, 2013, our Balance Sheets include the following intercompany balances:no contributions in 2013.
 December 31, 2014 December 31, 2013
 Millions of Dollars
Receivables from Related Parties   
UNS Electric$4
 $3
UNS Gas1
 2
UNS Energy
 1
Total Due from Related Parties$5
 $6
    
Payables to Related Parties   
SES$2
 $2
UNS Electric1
 
UNS Energy
 7
Total Due to Related Parties$3
 $9
DIVIDEND PAID

TEP declared and paid $50 million in dividends to UNS Energy in 2015 and $40 million in 2014 and 2013.

6765


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The ACC's approval of the acquisition of UNS Energy by Fortis, in August 2014, contained a condition restricting subsidiary dividend payments to UNS Energy by TEP to no more than 60 percent of TEP's annual net income for the earlier of five years or until such time that TEP's equity capitalization reaches 50 percent of total capital as accounted for in accordance with GAAP. The ratios used to determine the dividend restrictions will be calculated for each calendar year and reported to the ACC annually beginning on April 1, 2016. As of December 31, 2015, TEP had not reached the 50 percent of total capital and was therefore still restricted by the condition contained in the ACC's approval order.

NOTE 5.6. DEBT, CREDIT FACILITIES, AND CAPITAL LEASE OBLIGATIONS
LONG-TERM DEBT
Long-term debt matures more than one year from the date of the financial statements. We summarize TEP’s long-term debt inThe following table presents the statementscomponents of capitalization.Long-Term Debt on the Consolidated Balance Sheets:
(dollars in millions)     December 31,
Debt (1)
 Interest Rate 
Maturity Date (3)
 2015 2014
Notes        
2011 Notes 5.15% 2021 $250
 $250
2012 Notes 3.85% 2023 150
 150
2014 Notes 5.00% 2044 150
 150
2015 Notes 3.05% 2025 300
 
Tax Exempt Local Furnishings Bonds        
1982 Pima A Irvington Project 
Reset Weekly (2)
 2022 
 39
1982 Pima A TEP Projects 
Reset Weekly (2)
 2022 
 40
2008 Pima B 5.75% 2029 
 130
2010 Pima A 5.25% 2040 100
 100
2012 Pima A 4.50% 2030 16
 16
2013 Pima A 4.00% 2029 91
 91
2013 Apache A 
Reset Monthly (2)
 2032 100
 100
Tax Exempt Pollution Control Bonds        
2009 Pima A 4.95% 2020 80
 80
2009 Coconino A 5.13% 2032 15
 15
2010 Coconino A 
Reset Weekly (2)
 2032 37
 37
2012 Apache A 4.50% 2030 177
 177
Total Long-Term Debt     1,466
 1,375
Less Unamortized Discount and Debt Issuance Costs     14
 13
Total Long-Term Debt, Net     $1,452
 $1,362
(1)
As of December 31, 2015, all of TEP's debt is unsecured, with the exception of the 2010 Coconino A variable rate bonds, which are backed by a LOC.
(2)
For variable rate debt for which rates are reset weekly, the weighted average rate (including LOC fees and remarketing fees) was 1.24% in 2015 and 1.46% in 2014. The average weekly interest rate ranged from 0.93% - 1.42% in 2015 and 1.40% - 1.75% during 2014. For variable rate debt for which rates are reset monthly, the rate is based on a percentage of an index equal to one-month London Interbank Offered Rate (LIBOR) plus a credit spread. The average monthly rate was 0.81% in 2015 and 0.87% in 2014. The monthly interest rate ranged from 0.79% - 0.87% in 2015 and 0.85% - 0.95% in 2014.
(3)
The 2010 Coconino A variable rate bonds are backed by an LOC issued pursuant to the 2010 Reimbursement Agreement, which expires in December 2019. The 2013 Apache A variable rate bonds are subject to mandatory tender for purchase in 2018.

66


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



DEBT ISSUANCES AND REDEMPTIONS
Fixed Rate NotesDebt
In February 2015, TEP issued and sold $300 million aggregate principal amount of senior unsecured notes. TEP may redeem the notes prior to December 2024, with a make-whole premium plus accrued interest. On or after December 2024, TEP may redeem the notes at par plus accrued interest.
In January 2015, TEP purchased $130 million aggregate principal amount of unsecured tax exempt Industrial Development Revenue Bonds (IDRBs) issued in June 2008 by the Industrial Development Authority (IDA) of Pima County, Arizona for the benefit of TEP. The multi-modal bonds mature in September 2029. At December 31, 2015, TEP had not remarketed the repurchased bonds and as a result the bonds were not recorded in Long-Term Debt on the Consolidated Balance Sheets.
In March 2014, TEP issued and sold $150 million of 5.0% unsecured notes due March 2044.notes. TEP may redeem the notes prior to September 2043, with a make-whole premium plus accrued interest. After September 2043, TEP may redeem the notes at par plus accrued interest. TEP used the net proceeds to repay approximately $90 million on the outstanding borrowings under the 2010 Revolving Credit Facility with the remaining proceeds used for general corporate purposes. The unsecured notes contain a limitation on the amount of secured debt that TEP may have outstanding.
Variable Rate Debt
In September 2012,August 2015, TEP issued $150 millionredeemed two series of 3.85% unsecured notes due March 2023. TEP may call the debt prior to December 2022, with a make-whole premium plus accrued interest. After December 2022, TEP may call the debtvariable rate tax-exempt bonds at par plus accrued interest. The unsecured notes contain a limitation on the amount of secured debt that TEP may have outstanding. TEP used the net proceeds to repay approximately $72 million outstanding on the 2010 Revolving Credit Facility with the remaining proceeds used for general corporate purposes.
Tax-Exempt Fixed Rate Bonds
In March 2013, the Industrial Development Authority of Pima County, Arizona issued approximately $91 millionan aggregate principal amount of unsecured tax-exempt Industrial Development Revenue Bonds (IDRBs) for$79 million prior to maturity. In September 2015, TEP terminated the benefit of TEP. The bonds bear interest at a fixed rate of 4.0%, mature in September 2029, and may be redeemed at par on or after March 2023. The proceeds from the sale of the bonds were deposited with a trustee to retire approximately $91 million of 6.375% unsecured tax-exempt bonds in April 2013.
Tax-Exempt Variable Rate Bonds and Interest Rate Swap
In November 2013, the Industrial Development Authority of Apache County, Arizona issued $100 million of tax-exempt, variable rate IDRBs for the benefit of TEP, due April 2032. The lender resets the interest rate monthly based on a percentage of an index rate equal to one-month LIBOR plus a bank margin rate. In 2014, the average monthly variable rate was 0.87% and ranged from 0.85% to 0.95%. In 2013, the average monthly variable rate was 0.95%. These bonds are multi-modal bonds, and the initial term is set at five years through November 2018, at which time the bonds will be subject to mandatory tender for purchase. Proceeds were deposited with a trustee to redeem $100 million variable rate bonds in December 2013.
Certain of TEP's tax-exempt, variable rate bonds are supported by Letter of Credits (LOCs)associated LOCs issued under the 2010 Credit Agreement and TEP Reimbursement Agreement, see below.
The following table shows interest rates (exclusive of LOC and remarketing fees) on TEP’s weekly variable rate bonds, which are reset weekly by its remarketing agents:
 Years Ended December 31,
 2014 2013 2012
Interest Rates on Bonds:     
Average Interest Rate0.08% 0.10% 0.17%
Range of Average Weekly Rates.05% - 0.13% 0.06% - 0.25% 0.06% - 0.26%
a revolving credit facility.
In September 2014, anTEP's interest rate swap TEP entered into in August 2009 expired. The interest rate swap had the economic effect of converting $50 million of variable rate bonds to a fixed rate of 2.4%2.40% from September 2009 to September 2014.
TEP MORTGAGE INDENTURE
Prior to November 2013, the 2010 Credit Agreement and the 2010 TEP Reimbursement Agreement were secured by $423 million in mortgage bonds issued under the 1992 Mortgage. As a result of a credit rating upgrade, in October 2013, TEP canceled $423 million in mortgage bonds and discharged the 1992 Mortgage, which had created a lien on and security interest in substantially all of TEP’s utility plant assets. TEP’s obligations under the 2010 Credit Agreement and the 2010 TEP Reimbursement Agreement are now unsecured.

68


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



CREDIT AGREEMENTS
2014 Credit Agreement
In December 2014,October 2015, TEP entered into an unsecured credit agreement (2014(2015 Credit Agreement). replacing the 2010 Credit Agreement. The 20142015 Credit Agreement provides for a $130 million term loan commitment and a $70$250 million revolving credit commitment. Anycommitment and LOC facility. The LOC sublimit is $50 million. TEP expects that amounts borrowed under the revolving credit commitment canagreement will be used for working capital and other general corporate purposes. Amounts borrowedpurposes and that LOCs will be issued from time to time to support energy procurement and hedging transactions. All amounts outstanding under the term loan can only be used to purchase certain tax-exempt bonds in lieu of redemption. All loans made pursuant to the term loan commitment and the revolving credit commitmentfacility will be due and payable in November 2015,October 2020, the termination datedate. The 2015 Credit Agreement allows for two one-year extensions of the 2014 Credit Agreement.
In January 2015, amounts borrowed under the term loan commitment were used to purchase $130 million aggregate principal amount of unsecured IDRBs issued in June 2008 for the benefit of TEP. These multi-modal bonds currently bear interest at a fixed rate of 5.750% and mature in September 2029. At December 31, 2014, the bondsfacility if certain conditions are classified as Long-Term Debt on TEP's balance sheet.
Loans under the 2014 Credit Agreement bear interest at a variable interest rate consisting of a spread over LIBOR or Alternate Base Rate. Alternate Base Rate is equal to the greater of (i) issuing bank's reference rate, (ii) the federal funds rate plus 1/2 of 1% or (iii) adjusted LIBOR for an interest period of one month plus 0.750%. The interest rate in effect on borrowings is LIBOR plus 0.750% for Eurodollar loans or Alternate Base Rate for Alternate Base Rate loans.
At December 31, 2014, TEP had a $70 million loan balance under the revolving credit facility and no borrowings under the term loan portion of the 2014 Credit Agreement. The revolving loan balance was included in Current Liabilities on TEP’s balance sheets. At December 31, 2014, there was nothing available under the revolving credit facility and $130 million available under the term loan for the 2014 Credit Agreement. As of 01/30/15, TEP had a $130 million term loan balance outstanding under the 2014 Credit Agreement and a $70 million revolving loan balance.
2010 Credit Agreement
TEP’s core credit facility, which was entered into in 2010 and amended in 2011 (2010 Credit Agreement), has an expiration date of November 2016, and will continue to provide TEP with access to $200 million of revolving credit and $82 million in LOCs supporting variable-rate tax-exempt bonds.satisfied.
Interest rates and fees under the 20102015 Credit Agreement are based on a pricing grid tied to TEP’s credit ratings. The interest rate currently in effect on borrowings is LIBOR plus 1.125%1.00% for Eurodollar loans or Alternate Base Rate plus 0.125%with no spread for Alternate Base Rate loans. The margin rate currently
At December 31, 2015, TEP had no borrowings outstanding included in effectCurrent Liabilities on the $82Consolidated Balance Sheets. As of February 17, 2016, there was $250 million available under the 2015 Credit Agreement's revolving credit and LOC facility is 1.125%.facilities.
In 2015, TEP terminated both the 2010 and 2014 Credit Agreements. The amended 2010 Credit Agreement provided for a $200 million revolving credit commitment and LOCs supporting variable-rate, tax-exempt bonds, with an expiration date of November 2016. The 2014 Credit Agreement, entered into in December 2014, provided for a $130 million term loan commitment and a $70 million revolving credit commitment, with an expiration date of November 2015. At December 31, 2014, TEP had $15$85 million in total borrowings and $1 million outstanding in LOCs issued under the revolving credit facility for the 2010 Credit Agreement. At December 31, 2013, TEP had no borrowings and $1 million outstanding in LOCs issued under the revolving credit facility for the 2010 Credit Agreement. At December 31, 2014, there was $185 million available under the revolving credit facility for the 2010 Credit Agreement. The revolving loan balance wasthese agreements which were included in Current Liabilities on TEP’s balance sheets. The outstanding LOCs are not shown as liabilities on TEP’s balance sheets. As of 01/30/15, TEP had $170 million available under the 2010 Credit Agreement revolving credit facility.Consolidated Balance Sheets.
2010 TEP REIMBURSEMENT AGREEMENT
AIn December 2010, a $37 million LOC was issued to support certain variable rate tax-exempt bonds pursuant to the 2010 TEP Reimbursement Agreement. The LOC supports $37 million aggregate principal amounthad an expiration date of variable rate tax-exempt bonds that were issued on behalf of TEP in December 2010.2014. In February 2014, TEPthe LOC was amended the agreement to extend the LOC expiration date from 2014 to 2019. Fees are payable on the aggregate outstanding amount of the LOC at a rate of 1.00%0.75% per annum.annum based on TEP's current credit ratings.
COVENANT COMPLIANCE
The 2014 Credit Agreement, 2010 Credit Agreement, 2010 TEP Reimbursement Agreement, 2013 Covenants Agreement, and certainCertain of our credit and long-term debt agreements contain restrictive covenants, including restrictions on additional indebtedness, liens to secure indebtedness, mergers, sales of assets, transactions with affiliates, and restricted payments.
At December 31, 2014,2015, we were in compliance with the terms of our long-term debt, 2014 Credit Agreement, 20102015 Credit Agreement, 2013 Covenants Agreement, and the 2010 TEP Reimbursement Agreement.

6967


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



CAPITAL LEASE OBLIGATIONS
In January 2015, TEP reduced its capital lease obligations through the scheduled purchase payment for Springerville Unit 1 of $43 million and scheduled paymentsThe following table details Capital Lease Obligation on other leases of $9 million.TEP's Consolidated Balance Sheets:
 December 31,
(in millions)2015 2014
Springerville Unit 1$
 $43
Springerville Coal Handling Facilities
 117
Springerville Common Facilities69
 83
Total Capital Lease Obligations69
 243
Less Current Obligations Under Capital Leases14
 174
Total Capital Lease Obligations, Net$55
 $69
Springerville Unit 1 Capital Lease Purchases
The Springerville Unit 1 Leases had an initial term to January 2015, and included a fair market value purchase option at the end of the initial lease term.
In December 2014, TEP purchased a 10.6% leased interest in Springerville Unit 1 representing 41 MW of capacity for $20 million, the appraised value. Upon purchase, TEP reduced Capital Lease Obligations on its balance sheet for the purchase price.value of $20 million. In January 2015, upon expiration of the lease term, TEP purchased leased interests comprising 24.8% of Springerville Unit 1, representing 96 MW of capacity, for an aggregate purchase price of $46 million, the appraised value. Upon purchase of the leased interests, TEP reduced Capital Lease Obligations on the Consolidated Balance Sheets for the purchase price.
With the completion of these lease optionthe purchases, TEP owns 49.5% of Springerville Unit 1, or 192 MW of capacity. Furthermore, TEP is obligated to operate the unit for the Third-Party Owners under an existing facility support agreement.agreements. The Third-Party OwnersOwner Trustees and Co-Trustees are obligated to compensate TEP for their pro rata share of expenses for the unit in the amount of approximately $1.5 million per month and their share of capital expenditures, which are approximately $7 million in 2015.expenses. See Note 6 of Notes7 for more information regarding claims relating to Consolidated Financial Statements.Springerville Unit 1.
Springerville Coal Handling Facilities Lease Purchase Commitment
In April 2014,2015, upon expiration of the lease, TEP notified the owner participants and their lessors that TEP has elected to purchase theirpurchased an 86.7% undivided ownership interestsinterest in the Springerville Coal Handling Facilities at the fixed purchase price of $120 million, upon the expirationbringing its total ownership of the lease term in April 2015. Dueassets to TEP’s100%. Upon purchase commitment, in April 2014, TEP recorded an increase to both Utility Plant Under Capital Leases and Current Obligations Under Capital Leases on its balance sheet in the amount of $109 million, which represented the present value of the totalleased interest, TEP reduced Capital Lease Obligations on the Consolidated Balance Sheets for the purchase commitment.price.
Upon TEP's purchase,In May 2015, SRP, is obligated to buythe owner of Springerville Unit 4, purchased from TEP a portion of17.05% undivided interest in the Springerville Coal Handling Facilities from TEP for approximately $24 million, and million.
Tri-State, the lessee of Springerville Unit 3, is obligated to either 1)either: (i) buy a portion of17.05% undivided interest in the facilities for approximately $24 millionmillion; or 2)(ii) continue to make payments to TEP for the use of the facilities. No amounts have been recorded for these commitments from SRP and Tri-State athas until April 2016 to exercise its purchase option. At December 31, 2014.2015, Tri-State's 17.05% undivided interest in the Springerville Coal Handling Facilities is classified as Assets Held for Sale on the Consolidated Balance Sheets.
Springerville Common Facilities Leases
The Springerville Common Facilities Leases have an initial term to December 2017 for one lease and January 2021 for the other two leases, subject to optional renewal periods of two or more years through 2025. Instead of extending the leases, TEP may also exercise a fixed-price purchase provision. The fixed prices for the acquisition of the interests in the common facilities are $38 million in 2017 and $68 million in 2021.
TEP agreedentered into agreements with Tri-State, the lessee of Springerville Unit 3, and SRP, the owner of Springerville Unit 4, that contain the following conditions if the Springerville Coal Handling Facilities and Common Facilities Leases are not renewed, renewed:
TEP will exercise the purchase options under these contracts. contracts;
SRP will then be obligated to buy a portion of these facilitiesfacilities; and
Tri-State will then be obligated to either: (i) buy a portion of these facilities; or (ii) continue making payments to TEP for the use of these facilities.
Lease Debt and Equity
Investments in Springerville Lease Debt and Equity
In January 2013, TEP received the final maturity payment of $9 million on the investment in Springerville Unit 1 lease debt. TEP also heldentered into an undivided equity ownership interest in the Springerville Unit 1 Leases totaling $36 million at December 31, 2013. At December 31, 2014, $36 million was transferred from Lease Equity Investment to Plant in Service on TEP's balance sheet.
Interest Rate Swap—Springerville Common Facilities Lease Debt
TEP’s interest rate swap in 2006 that hedges a portion of the floating interest rate risk associated with the Springerville Common Facilities lease debt. InterestThe swap has the effect of fixing the benchmark LIBOR rate on a portion of the amortizing principal balance. The swap matures in January 2020 with interest on the lease debt is payable at six-month LIBOR plus a credit spread. The applicable spread was 1.75% at December 31, 2014 and December 31, 2013.swapped rate of

7068


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



5.77% plus an applicable margin per the lease agreement. The lease debt outstanding at December 31, 2015 consisted of a notional amount of $29 million on which interest was fixed by the swap has the effectand a notional amount of fixing the interest rates on the amortizing principal balances as follows:
$13 million of debt that was not hedged. The applicable margin was 1.88% and 1.75% at December 31, 2015 and 2014, respectively.
Lease Debt Outstanding at December 31, 2014
Fixed
Rate
 
LIBOR
Spread
Notional Amount $32 million - Effective Date June 20065.77% 1.75%
TEP recorded the interest rate swap as a cash flow hedge for financial reporting purposes. See Note 10 of Notes to Consolidated Financial Statements.11 for additional information.
DEBT MATURITIES
Long-term debt, including term loan payments, revolving credit facilities classified as long-term, and capital lease obligations mature on the following dates:
Long-Term
Debt
Maturities (1)
 
Capital
Lease
Obligations
 

Total
Millions of Dollars
2015$
 $188
 $188
(in millions)
Long-Term
Debt
Maturities (1)
 
Capital
Lease
Obligations
 

Total (2)
201679
 16
 95
$
 $15
 $15
2017
 18
 18

 16
 16
2018100
 11
 111
100
 11
 111
201937
 12
 49
37
 11
 48
Total 2015 - 2019216
 245
 461
202080
 18
 98
Total 2016 - 2020217
 71
 288
Thereafter1,159
 18
 1,177
1,249
 
 1,249
Less: Imputed Interest
 (20) (20)
 (2) (2)
Total$1,375
 $243
 $1,618
$1,466
 $69
 $1,535
(1) 
$11537 million of TEP’s variable rate bonds are backed by LOCsan LOC issued pursuant to the 2010 Credit Agreement, which expires in November 2016, and the TEP 2010 Reimbursement Agreement, which expires in December 2019. Although the variable rate bonds mature between 2022 andbond matures in 2032, the above table reflects a redemption or repurchase of such bondsbond in 2016 and 2019 as though the LOCs terminateLOC terminates without replacement upon expiration of the 2010 Credit Agreement and the 2010 Reimbursement Agreement. TEP's 2013 tax-exempt variable rate IDRBs, which have an aggregate principal amount of $100 million and mature in 2032, are subject to mandatory tender for purchase in 2018. The repayment of TEP Unsecured Notes
(2)
Total long-term debt is not reduced by the remaining $2$11 million of related unamortized debt issuance costs and $3 million of unamortized original issue discount.

NOTE 6.7. COMMITMENTS CONTINGENCIES, AND ENVIRONMENTAL MATTERSCONTINGENCIES
COMMITMENTS
At December 31, 2014,2015, TEP had the following firm, non-cancellable, minimum purchase obligations and operating leases.leases:
 2015 2016 2017 2018 2019 Thereafter Total
 Millions of Dollars
Fuel, Including Transportation$76
 $78
 $76
 $49
 $49
 $285
 $613
Purchased Power22
 7
 
 
 
 
 29
Transmission6
 6
 6
 6
 4
 16
 44
Renewable Power Purchase Agreements45
 45
 45
 45
 44
 565
 789
RES Performance-Based Incentives8
 8
 8
 8
 8
 76
 116
Operating Leases:             
Land Easements and Rights-of-Way2
 1
 1
 1
 2
 77
 84
Operating Leases Other1
 1
 1
 1
 1
 5
 10
Total Purchase Commitments$160
 $146
 $137
 $110
 $108
 $1,024
 $1,685

71


(in millions)2016 2017 2018 2019 2020 Thereafter Total
Fuel, Including Transportation$78
 $76
 $49
 $49
 $41
 $287
 $580
Purchased Power28
 
 
 
 
 
 28
Transmission6
 6
 6
 4
 3
 13
 38
Renewable Power Purchase Agreements61
 61
 61
 61
 60
 750
 1,054
RES Performance-Based Incentives8
 8
 8
 8
 8
 67
 107
Operating Leases:             
Land Easements and Rights-of-Way1
 1
 1
 1
 1
 77
 82
Operating Leases Other1
 1
 1
 1
 1
 4
 9
Total Purchase Commitments$183
 $153
 $126
 $124
 $114
 $1,198
 $1,898
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Fuel, Including Transportation
TEP has long-term contracts for the purchase and delivery of coal with various expiration dates through 2031. Amounts paid under these contracts depend on actual quantities purchased and delivered. Some of these contracts include a price adjustment

69


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



clause that will affect the future cost. TEP expects to spend more than the minimum purchase obligations to meet its fuel requirements. TEP's fuel costs are recoverable from customers through the PPFAC.
Contemporaneously with the sale of SJCC's stock in January 2016, the existing coal sale agreement terminated and a new Coal Supply Agreement (CSA) became effective. The new CSA is between SJCC and PNM and continues through June 30, 2022. TEP is not a party to the new CSA, but has minimum purchase obligations under restructured ownership agreements at San Juan. Estimated future payments, not included in the table above, are $21 million in 2016, $23 million in 2017, $24 million in 2018 and 2019, $23 million in 2020, and $22 million through the end of the contract.
TEP has firm transportation agreements with capacity sufficient to meet its load requirements. These contracts expire in various years between 20172016 and 2040.
Purchased Power and Transmission
TEP has agreements with utilities and other energy suppliers for purchased power to meet system load and energy requirements, replace generation from company-owned units under maintenance and during outages, and meet operating reserve obligations. In general, these contracts provide for capacity payments and energy payments based on actual power taken under the contracts. These contracts and expire through 2017.in 2016. Certain of these contracts are at a fixed price per MW and others are indexed to natural gas prices. The commitment amounts included in the table are based on projected market prices as of December 31, 2014.2015.
TEP has agreements with other utilities to provide transmission services.services over lines that are part of the Western Interconnection, a regional grid in the United States. These contracts expire in various years between 2018 and 2028.
TEP's purchased power and transmission costs are recoverable from customers through the PPFAC mechanisms.mechanism.
Renewable Power Purchase Agreements and RES Performance-Based Incentives
TEP has enteredenters into 20 year Renewable PPAslong-term renewable power purchase agreements which require TEP to purchase 100% of the output of certain renewable energy generation facilities that have achievedoutput once commercial operation. These agreements have various expiration dates through 2034.operation status is achieved. While TEP has entered into additional long-term renewable PPAsis not required to comply with RES requirements; however, TEP’s obligation to purchase powermake payments under these agreements doescontracts if power is not begin untildelivered, the facilities are operational.table above includes estimated future payments based on expected power deliveries. A portion of the cost of renewable energy is recoverable through the PPFAC, with the balance of costs recoverable through the RES tariff. See Note 2These contracts expire in various years between 2030 and 2035.
In February 2016, a facility achieved commercial operation status. The related contract expires in 2036. Estimated future payments, not included in the table above, are $3 million in each of Notes to Consolidated Financial Statements.2016 through 2020 and $43 million through the end of the contract.
TEP has entered into REC purchase agreements to purchase the environmental attributes from retail customers with solar installations. Payments for the RECs are termed Performance-Based Incentives (PBIs) and are paid in contractually agreed-upon intervals (usually quarterly) based on metered renewable energy production. PBIs are recoverable through the RES tariff.
See Note 2 of Notes to Consolidated Financial Statements.for additional information regarding TEP's RES tariff.
Operating Leases
Our operating lease expense is primarily for rail cars, office facilities, land easements, and rights-of-way with varying terms, provisions, and expiration dates. TEP's operating lease expense totaled $3 million in 2015 and 2014 and $2 million in each of 2013 and 2012.2013.
CONTINGENCIES
Navajo Generating Station Lease Extension
Navajo Generating Station (Navajo) is located on a site that is leased from the Navajo Nation with an initial lease term through 2019. The Navajo Nation signed a lease amendment in 2013 that would extend the lease from 2019 through 2044. The participants in Navajo, including TEP, have not signed the lease amendment. Certainamendment because certain participants have expressed an interest in discontinuing their participation in Navajo. Negotiations between the participants are ongoing, and all parties will likely agree to the terms. To become effective, this lease amendment must be signed by all of the participants, approved by the Department of the Interior, and is subject to environmental reviews. Once the lease amendment becomes effective, the participants will be responsible for additional lease costs from the date the Navajo Nation signed the lease amendment. TEP owns 7.5% of Navajo and, in December 2014,Navajo. In 2015, TEP recorded additional estimated lease expense of approximately $2$1 million with the expectation that the lease amendment will become effective. TEP's Consolidated Balance Sheets reflect a total liability related

70


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



to the lease extensionamendment of $3 million and $2 million at December 31, 2015 and 2014, respectively, recorded in Deferred CreditsRegulatory and Other Liabilities—Other on TEP's balance sheet.Other.
Claims Related to Springerville Generating Station Unit 1
OnIn November 7, 2014, the Springerville Unit 1 Third-Party Owners filed a complaint (FERC Action) against TEP at the FERC alleging that TEP had not agreed to wheel power and energy for the Third-Party Owners in the manner specified in the existing Springerville Unit 1 facility support agreement between TEP and the Third-Party Owners and for the cost specified by the Third-Party Owners. The Third-Party Owners requested an order from the FERC requiring such wheeling of the Third-Party Owners’ energy from their Springerville Unit 1 interests beginning onin January 1 2015 to the Palo Verde switchyard and for the

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



price specified by the Third-Party Owners. On December 3, 2014, TEP filed an answer to the FERC Action denying the allegations and requesting that the FERC dismiss the complaint. OnIn February 19, 2015, the FERC issued an order denying the Third-Party Owners complaint. In March 2015, the Third-Party Owners filed a request for rehearing in the FERC Action, which the FERC denied in October 2015. In December 2015, the Third-Party Owners appealed the FERC’s order denying the Third-Party Owners' complaint to the U.S. Court of Appeals for the Ninth Circuit. In December 2015, TEP filed an unopposed motion to intervene in the Ninth Circuit appeal.
On December 19, 2014, the Third-Party Owners filed a complaint against TEP in the Supreme Court of the State of New York, New York County (New York Action), alleging,. In response to motions filed by TEP to dismiss various counts and compel arbitration of certain of the matters alleged, and the court’s subsequent ruling on the motions, the Third-Party Owners have amended the complaint three times, dropping certain of the allegations and raising others in the New York Action and in the arbitration proceeding described below. As amended, the New York Action alleges, among other things, that TEP has refused to comply with the Third-Party Owners' instructions to schedule their entitlement share of power and energy, that TEP failed to comply with their instructions to specify the level of fuel and fuel handling services, that TEP has failed to properly operate, maintain, and make capital investments in Springerville Unit 1 during the term of the leases and that TEP has breached the lease transaction documents by refusing to pay certain of the Third-Party Owners’ claimed expenses. The third amended complaint seeks $71 million in liquidated damages and direct and consequential damages in an amount to be determined at trial. The Third-Party Owners have also agreed to stay their claim that TEP has not agreed to wheel power and energy inas required pending the manner required as set forth inoutcome of the FERC Action andAction. In November 2015, the Third-Party Owners filed a motion for summary judgment on their claim that TEP has breached fiduciary duties claimedfailed to be owed to the Third-Party Owners. The New York Action seeks declaratory judgments, injunctive relief, damages in an amount to be determined at trial andpay certain of the Third-Party Owners’ feesclaimed expenses.
In December 2014 and expenses.
On December 22, 2014,January 2015, Wilmington Trust Company, as Owner Trustees and Lessors under the leases of the Third-Party Owners, sent a noticenotices to TEP that allegesalleged that TEP hashad defaulted under the Third-Party Owners’ leases. The notice states that the Owner Trustees, as Lessors, are exercising their rights to keep the undivided interests idle and demandingnotices demanded that TEP pay on January 1, 2015, liquidated damages totaling approximately $71 million. On January 26, 2015, Wilmington Trust Company sent a second notice repeatingIn letters to the Owner Trustees, TEP denied the allegations in the notices.
In April 2015, TEP filed a demand for arbitration with the American Arbitration Association (AAA) seeking an award of the Owner Trustees and Co-Trustees' share of unreimbursed expenses and capital expenditures for Springerville Unit 1. In June 2015, the Third-Party Owners filed a separate demand for arbitration with the AAA alleging, among other things, that TEP has failed to properly operate, maintain and make capital investments in Springerville Unit 1 since the leases have expired. The Third-Party Owners’ arbitration demand seeks declaratory judgments, damages in an amount to be determined by the arbitration panel and the Third-Party Owners’ fees and expenses. TEP and the Third-Party Owners have since agreed to consolidate their arbitration demands into one proceeding. In August 2015, the Third-Party Owners filed an amended arbitration demand adding claims that TEP has converted the Third-Party Owners’ water rights and certain emission reduction payments and that TEP is improperly dispatching the Third-Party Owners’ unscheduled Springerville Unit 1 power and capacity. In October 2015, the arbitration panel granted TEP’s motion for interim relief, ordering the Owner Trustees and Co-Trustees to pay TEP their pro-rata share of unreimbursed expenses and capital expenditures for Springerville Unit 1 during the pendency of the arbitration. The arbitration panel also denied the Third-Party Owners’ motion for interim relief which had requested that TEP be enjoined from dispatching the Third-Party Owners’ unscheduled Springerville Unit 1 power and capacity. TEP has been scheduling, when economical, the Third-Party Owners’ entitlement share of power from Springerville Unit 1, as permitted under the Springerville Unit 1 facility support agreement, since June 14, 2015. The arbitration hearing is scheduled for July 2016.
In November 2015, TEP filed a petition to confirm the interim arbitration order in the Supreme Court of the State of New York naming the Owner Trustee and Co-Trustee as respondents. The petition seeks an order from the court confirming the interim arbitration order under the Federal Arbitration Act. In December 22, 2014 notice.2015, the Owner Trustees filed an answer to the petition and a cross-motion to vacate the interim arbitration order.
As of December 31, 2015, TEP has billed the Third-Party Owners approximately $23 million for their pro-rata share of Springerville Unit 1 expenses and $4 million for their pro-rata share of capital expenditures, none of which had been paid as of February 17, 2016.
TEP cannot predict the outcome of the claims relating to Springerville Unit 1, and, due to the general and non-specific scope and nature of the injunctive relief sought for these claims, TEP cannot determine estimates of the range of loss, if any, at this time. TEP intends to vigorously

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



defend itself against the claims asserted by the Third-Party Owners and to vigorously pursue the claims it has asserted against the Third-Party Owners.
TEP and the Third-Party Owners have agreed to stay these litigation matters relating to Springerville Unit 1 in furtherance of settlement negotiations. However, there is no assurance that a settlement will be reached or that the litigation will not continue.
Claims Related to San Juan Generating Station
San Juan Coal Company (SJCC) operates an underground coal mine in an area where certain gas producers have oil and gas leases with the federal government, the State of New Mexico, and private parties. These gas producers allege that SJCC’s underground coal mine interferes with their operations, reducing the amount of natural gas they can recover. SJCC compensated certain gas producers for any remaining production from wells deemed close enough to the mine to warrant plugging and abandoning them. These settlements, however, do not resolve all potential claims by gas producers in the area. TEP owns 50% of Units 1 and 2 at San Juan Generating Station (San Juan), which represents approximately 20% of the total generation capacity at San Juan, and is responsible for its share of any settlements. TEP cannot estimate the impact of any future claims by these gas producers on the cost of coal at San Juan.
In August 2013, the Bureau of Land Management (BLM) proposed regulations that, among other things, redefine the term “underground mine” to exclude high-wall mining operations and impose a higher surface mine coal royalty on high-wall mining. SJCC utilized high-wall mining techniques at its surface mines prior to beginning underground mining operations in January 2003. If the proposed regulations become effective, SJCC may be subject to additional royalties on coal delivered to San Juan between August 2000 and January 2003 totaling approximately $5 million of which TEP’s proportionate share would approximate $1 million. TEP owns 50% of Units 1 and 2 at San Juan, which represents approximately 20% of the total generation capacity at San Juan, and is responsible for its share of any settlements. TEP cannot predict the final outcome of the BLM’s proposed regulations.
In February 2013, WildEarth Guardians (WEG) filed a Petition for Review in the United StatesU.S. District Court of Colorado against the Office of Surface Mining (OSM) challenging federal administrative decisions affecting seven different mines in four states issued at various times from 2007 through 2012. In its petition, WEG challenges several unrelated mining plan modification approvals, which were each separately approved by OSM. Of the fifteen claims for relief in the WEG Petition, two concern SJCC’s San Juan mine. WEG’s allegations concerning the San Juan mine arise from OSM administrative actions in 2008. WEG alleges various National Environmental Policy Act (NEPA) violations against OSM, including, but not limited to, OSM’s alleged failure to provide requisite public notice and participation, alleged failure to analyze certain environmental impacts, and alleged reliance on outdated and insufficient documents. WEG’s petition seeks various forms of relief, including a finding that the federal defendants violated NEPA by approving the mine plans, voiding, reversing, and remanding the various mining modification approvals, enjoining the federal defendants from re-issuing the mining plan approvals for the mines until compliance with NEPA has been demonstrated, and enjoining operations at the seven mines. SJCC intervened in this matter. The CourtSJCC was granted SJCC’sits motion to sever its claims from the lawsuit and transfer venue to the United StatesU.S. District Court for the District of New Mexico, where this matter is now proceeding. The parties have requested the court to stay this matter until April 2016, in furtherance of settlement negotiations. If WEG ultimately obtains the relief it has requested, such a ruling could require significant expenditures to reconfigure operations at the San Juan mine, impact the production of coal, and impact the economic viability of the San Juan mine and San Juan. TEP cannot currently predict the outcome of this matter or the range of its potential impact.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Claims Related to Four Corners Generating Station
In October 2011, EarthJustice, on behalf of several environmental organizations, filed a lawsuit in the United StatesU.S. District Court for the District of New Mexico against Arizona Public Service Company (APS) and the other Four Corners Generating Station (Four Corners) participants alleging violations of the Prevention of Significant Deterioration (PSD) provisions of the Clean Air Act at Four Corners. In January 2012, EarthJustice amended their complaint alleging violations of New Source Performance Standards resulting from equipment replacements at Four Corners. Among other things, the plaintiffs seeksought to have the court issue an order to cease operations at Four Corners until any required PSD permits are issued and order the payment of civil penalties, including a beneficial mitigation project. In April 2012, APS filed motions to dismiss with the court for all claims asserted by EarthJustice in the amended complaint. The parties exchanged settlement proposals in January and February 2015, and have agreed to have the matter stayed until March 31, 2015 to make continued progress toward a final agreement that would resolve this matter without further litigation.
TEP owns 7% of Four Corners Units 4 and 5 and is liable for its share of any resulting liabilities. In June 2015, APS, the operator of Four Corners, announced a settlement with the Environmental Protection Agency (EPA) for outstanding environmental issues related to New Source Review provisions under the Clean Air Act. The settlement calls for environmental upgrades including Selective Catalytic Reduction (SCR) upgrades already planned for under the Regional Haze regulation, environmental mitigation projects, and civil penalties. A consent decree reflecting terms of the settlement was entered by the court in August 2015, effectively closing the case. TEP's estimated share of the settlement offer submitted by APS in August 2014additional capital, excluding the SCR upgrades, is approximately $2 million over the three year period it will take to construct the upgrades. TEP’s share of the annual O&M expenses is approximately $1 million. In addition, TEP recorded less than $1 million. TEP cannot predict the final outcomemillion for its share of the claims relating to Four Corners,one-time charges for environmental mitigation projects and due to the general and non-specific nature of the claims and the indeterminate scope and nature of the injunctive relief sought for this claim, TEP cannot determine estimates of the range of costs at this time.civil penalties.
In May 2013, the New Mexico Taxation and Revenue Department (NMTRD) issued a notice of assessment for coal severance tax, penalties, and interest totaling $30 million to the coal supplier at Four Corners. TEP's share of the assessment is $1 million based on our ownership percentage. In December 2013, the coal supplier and Four Corners’ operating agent filed a claim contesting the validity of the assessment on behalf of the participants in Four Corners, who will be liable for their share of any

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



resulting liabilities. TEP’s shareIn June 2015, the U.S. District Court ruled in favor of the assessment based on its ownershipFour Corners' participants. NMTRD filed an appeal of Four Corners is approximately $1 million. The New Mexico Taxation and Revenue Department and APS continue with settlement negotiations.the decision in August 2015. TEP cannot predict the final outcome or timing of resolution of this claim.these claims.
Mine Closure Reclamation at Generating Stations Not Operated by TEP
TEP pays ongoing reclamation costs related to coal mines that supply generating stations in which TEP has an ownership interest but does not operate. TEP is liable for a portion of final reclamation costs upon closure of the mines servicing Navajo, San Juan, and Four Corners. TEP’s share of reclamation costs at all three mines is expected to be $49$43 million upon expiration of the coal supply agreements, which expire between 20172019 and 2031. The reclamation liability (present value of future liability) recorded was $25 million and $22 million at December 31, 2015 and 2014, and $18 million at December 31, 2013.respectively.
Amounts recorded for final reclamation are subject to various assumptions, such as estimations of reclamation costs, the dates when final reclamation will occur, and the credit-adjusted risk-free interest rate to be used to discount future liabilities.expected inflation rate. As these assumptions change, TEP will prospectively adjust the expense amounts for final reclamation over the remaining coal supply agreements’ terms. TEP does not believe that recognition of its final reclamation obligations will be material to TEP in any single year because recognition will occur over the remaining terms of its coal supply agreements.
TEP’s PPFAC allows us to pass through final reclamation costs, as a component of fuel cost, to retail customers. Therefore, TEP classifies these costs as a regulatory asset by increasing the regulatory asset and the reclamation liability over the remaining life of the coal supply agreements and recovers the regulatory asset through the PPFAC as final mine reclamation costs are paid to the coal suppliers.
Discontinued Transmission Project
TEP and UNS Electric had initiated a project to jointly construct a 60-mile transmission line from Tucson, Arizona to Nogales, Arizona in response to an order by the ACC to UNS Electric to improve the reliability of electric service in Nogales. At this time, TEP and UNS Electric will not proceed with the project based on the cost of the proposed 345-kV345-kilo-volt (kV) line, the difficulty in reaching agreement with the United States Forest Service on a path for the line, and concurrence by the ACC that recent transmission additions by TEP and UNS Electric support elimination of this project. TEP and UNS Electric plan to maintain the Certificate of Environmental Compatibility (CEC) previously granted by the ACC for this project in contemplation of using a greater part of the route to serve future customers and to address reliability needs. As part of the 2013 TEP Rate Order, TEP agreed to seek recovery of the project costs from the FERC before seeking rate recovery from the ACC. In 2012, TEP wrote off $5 million of the capitalized costs believed not probable of recovery and recorded a regulatory asset of $5 million for the balance deemed probable of recovery in TEP's next FERC rate case.
Performance Guarantees
TEP has joint participation agreements with participants at Navajo, San Juan, Four Corners, and the Luna Energy Facility (Luna). The participants in each of the remote generating stations, in which TEP participates, including TEP, have guaranteed certain performance obligations of the other participants.obligations. Specifically, in the event of payment default, of a participant, the non-

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



defaultingnon-defaulting participants have agreed to bear a proportionate share of expenses otherwise payable by the defaulting participant. In exchange, the non-defaulting participants are entitled to receive their proportionate share of the generating capacity of the defaulting participants.participant. As of December 31, 2014,2015, there have been no such payment defaults under any of the remote generating stationparticipation agreements. TEP's jointThe Navajo participation agreements expireagreement expires in 2016 through 2046.
ENVIRONMENTAL MATTERS
Environmental Regulation
The Environmental Protection Agency (EPA) limits the amount of sulfur dioxide (SO2), nitrogen oxide (NOx), particulate matter, mercury and other emissions released into the atmosphere by power plants. TEP capitalized $11 million in 2014, $5 million in 2013, and $2 million in 2012 in construction costs to comply with environmental requirements. TEP expects to capitalize environmental compliance costs of $28 million in 2015 and $19 million in 2016. In addition, TEP recorded O&M expenses of $5 million in 2014, $8 million in 2013, and $15 million in 2012. TEP expects environmental O&M expenses to be $4 million in each of 2015 and 2016.
TEP may incur added costs to comply with future changes in federal and state environmental laws, regulations, and permit requirements at its power plants. Complying with these changes may reduce operating efficiency. TEP expects to recover the cost of environmental compliance from its ratepayers.
Hazardous Air Pollutant Requirements
In February 2012, the EPA issued final rules for the control of mercury emissions and other hazardous air pollutants from power plants. Based on the EPA's final Mercury and Air Toxics Standards (MATS) rules, additional emission control equipment will be required by April 2015. TEP, as operator of Springerville and Sundt, and the operator of Navajo have received extensions until April 2016 to comply with the MATS rules. TEP's share of the estimated costs to comply with the MATS rules includes the following:
Estimated Mercury Emissions Control Costs:Navajo 
Springerville(1)
 Millions of Dollars
Capital Expenditures$1
 $5
Annual O&M Expenses1
 1
(1)
Total capital expenditures and annual O&M expenses represent amounts for both Springerville Units 1 & 2, with estimated costs split equally between the two units. TEP owns 49.5% of Springerville Unit 1 with the close of the lease option purchases in December 2014 and January 2015; Third-Party Owners are responsible for 50.5% of environmental costs attributable to Springerville Unit 1. TEP continues to be responsible for 100% of environmental costs attributable to Springerville Unit 2.
TEP expects Four Corners, Sundt, and San Juan's current emission controls to be adequate to comply with the EPA's MATS rules. Therefore, TEP expects no additional capital expenditures or O&M expenses will be incurred to comply. Although expected to be compliant, Sundt would be required to install additional monitoring equipment, at an estimated cost of less than $1 million, to continue to burn coal after the MATS rules become effective.
Regional Haze Rules
The EPA's Regional Haze Rules require emission controls known as Best Available Retrofit Technology (BART) for certain industrial facilities emitting air pollutants that reduce visibility in national parks and wilderness areas. The rules call for all states to establish goals and emission reduction strategies for improving visibility. States must submit these goals and strategies to the EPA for approval. Because Navajo and Four Corners are located on land leased from the Navajo Nation, they are not subject to state oversight; the EPA oversees regional haze planning for these power plants.
In the western U.S., Regional Haze BART determinations have focused on controls for NOx, often resulting in a requirement to install selective catalytic reduction (SCR). Complying with the EPA’s BART rules, and with other future environmental rules, may make it economically impractical to continue operating all or a portion of the Navajo, San Juan, and Four Corners power plants or for individual owners to continue to participate in these power plants. The BART provisions of the Regional Haze Rules requiring emission control upgrades do not apply to Springerville Units 1 and 2 since they were constructed in the 1980s which is after the time frame as designated by the rules. Other provisions of the Regional Haze Rules requiring further emission reduction are not likely to impact Springerville operations until after 2018. TEP cannot predict the ultimate outcome of these matters.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



TEP's estimated costs involved in meeting these rules are:
Estimated NOx Emissions Control Costs:
Navajo (1)
 
San Juan (2)
 
Four Corners (3)
 
Sundt (4)
 Millions of Dollars
Capital Expenditures$28
 $37
 $35
 $12
Annual O&M Expenses1
 1
 2
 5-6
(1)
In August 2014, the EPA published a final FIP wherein: one unit at Navajo will be shut down by 2020; SCR (or the equivalent) will be installed on the remaining two units by 2030; and conventional coal-fired generation will cease by December 2044. The plant has until December 2019, to notify the EPA which option will be implemented. In addition, the installation of SCR technology could increase particulates which may require that baghouses be installed. TEP owns 7.5% of Navajo. TEP's share of the capital cost of baghouses in addition to the SCR costs reflected in the table above is approximately $28 million with O&M on the baghouses expected to be less than $1 million per year.
(2)
In October 2014, the EPA published a final rule approving a revised State Implementation Plan (SIP) covering BART requirements for San Juan, which includes the closure of Units 2 and 3 by December 2017 and the installation of selective non-catalytic reduction (SNCR) and Balance Draft technology on Units 1 and 4 by February 2016. Prior to the shutdown of any units at San Juan, Public Service Company of New Mexico (PNM), the operator, must first obtain New Mexico Public Regulation Commission approval. TEP owns 50% of San Juan Unit 2. At December 31, 2014, the net book value of TEP's share in San Juan Unit 2 was $110 million. TEP submitted a depreciation study in its 2013 Rate Case which identified an excess of required generation depreciation reserves. As stipulated in the 2013 Rate Order, TEP will seek the ACC's authority to apply any excess generation depreciation reserves to the unrecovered book value of any early retirement of generation assets prior to seeking additional recovery. TEP expects the excess generation depreciation reserves to fully cover the costs associated with early retirement of Unit 2.
(3)
In December 2013, APS, on behalf of the co-owners of Four Corners, notified the EPA that they have chosen an alternative BART compliance strategy; as a result, APS closed Units 1, 2, and 3 in December 2013 and has agreed to the installation of SCR on Units 4 and 5 by July 2018. TEP owns 7% of Four Corners Units 4 and 5.
(4)
In June 2014, the EPA issued a final rule that would require TEP to either (i) install, by mid-2017, SNCR and dry sorbent injection if Sundt Unit 4 continues to use coal as a fuel source, or (ii) permanently eliminate coal as a fuel source as a better-than-BART alternative by the end of 2017. Under the rule, TEP is required to notify the EPA of its decision by March 2017. We expect to make a decision by early 2016 as part of our MATS compliance plan for Sundt. At December 31, 2014, the net book value of the Sundt coal handling facilities was $17 million. If the coal handling facilities are retired early, TEP will request ACC approval to recover all the remaining costs of the coal handling facilities.

NOTE 7. PURCHASE OF GAS-FIRED GENERATION FACILITY
On December 10, 2014, TEP and UNS Electric acquired Gila River Unit 3, a gas-fired combined cycle unit with a nominal capacity rating of 550 MW located in Gila Bend, Arizona, from a subsidiary of Entegra Power Group LLC. TEP purchased a 75% undivided interest in Gila River Unit 3 (413 MW) for $164 million, and UNS Electric purchased the remaining 25% undivided interest. Upon the closing of the transaction, the letter of credit TEP provided in June 2014 for $15 million was canceled.
TEP’s purchase of Gila River Unit 3 is intended to replace the reduction of 195 MW of output from Springerville Unit 1 and the 170 MW of capacity expected to be retired at San Juan in 2017.
The transaction has been accounted for using the acquisition method of accounting which requires that assets acquired2022, Four Corners in 2041, and liabilities assumed be recognized at their fair values as of the acquisition date. The following table summarizes the assets acquired and liabilities assumed as of the acquisition date:
 Millions of Dollars
Utility Plant - Net$163
Materials and Supplies2
ARO Obligation Assumed (1)
(1)
Total Purchase Price$164
(1)
The ARO obligation was recorded at net present value in Deferred Credits and Other Liabilities - Other on TEP's balance sheet.


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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    Luna in 2046.



NOTE 8. EMPLOYEE BENEFIT PLANS
PENSION BENEFIT PLANS
We sponsor twoTEP has three noncontributory, defined benefit pension plans for substantially all employees and certain affiliate employees.plans. Benefits are based on years of service and average compensation. Two of the plans are for substantially all employees. We fund the pensionthose plans by contributing at least the minimum amount required under the Internal Revenue Service (IRS) regulations.
We also maintain a Supplemental Executive Retirement Plan (SERP) for executive management.
OTHER RETIREE BENEFIT PLANS
TEP provides limited health care and life insurance benefits for retirees. Active TEP employees may become eligible for these benefits if they reach retirement age while working for TEP or an affiliate.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



TEP funds its other retiree benefits for classified employees through a Voluntary Employee Beneficiary Association (VEBA). TEP contributed $4 million in 2015 and $3 million in each of 2014 2013 and 20122013 to the VEBA. Other retiree benefits for unclassified employees are self-funded.
TEP’s other retiree benefit plan was amended in 2012 to increase the participant contributions for classified employees who retire after February 1, 2014. The effect on the benefit obligation was less than $1 million.
REGULATORY RECOVERY
We record changes in our non-SERP pension plans and other retiree benefit plan, not yet reflected in net periodic benefit cost, as a regulatory asset, as such amounts are probable of future recovery in the rates charged to retail customers. Changes in the SERP obligation, not yet reflected in net periodic benefit cost, are recorded in Other Comprehensive Income since SERP expense is not currently recoverable in rates.
The following table summarizes pension and other retiree benefit related amounts (excluding tax balances) included on our balance sheet are:the Consolidated Balance Sheets:
Pension Benefits 
Other Retiree
Benefits
Pension Benefits Other Retiree Benefits
Years Ended December 31,December 31,
2014 2013 2014 2013
Millions of Dollars
Regulatory Pension Asset Included in Other Regulatory Assets$117
 $71
 $9
 $4
(in millions)2015 2014 2015 2014
Regulatory Pension Asset Included in Regulatory Assets$115
 $117
 $5
 $9
Accrued Benefit Liability Included in Accrued Employee Expenses(1) (1) (2) (2)(1) (1) (2) (2)
Accrued Benefit Liability Included in Pension and Other Retiree Benefits(71) (23) (67) (62)(57) (71) (63) (67)
Accumulated Other Comprehensive Loss (related to SERP)5
 2
 
 
5
 5
 
 
Net Amount Recognized$50
 $49
 $(60) $(60)$62
 $50
 $(60) $(60)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



OBLIGATIONS AND FUNDED STATUS
We measured the actuarial present values of all pension benefit obligations and other retiree benefit plans at December 31, 20142015 and December 31, 2013.2014. The table below includes all of TEP’s plans. All plans have projected benefit obligations in excess of the fair value of plan assets for each period presented. The status of our pension benefit and other retiree benefit plans are summarized below:
Pension Benefits 
Other Retiree
Benefits
Pension Benefits Other Retiree Benefits
Years Ended December 31,Year Ended December 31,
2014 2013 2014 2013
Millions of Dollars
(in millions)2015 2014 2015 2014
Change in Projected Benefit Obligation              
Benefit Obligation at Beginning of Year$330
 $357
 $74
 $77
$407
 $330
 $81
 $74
Actuarial (Gain) Loss67
 (35) 5
 (5)(22) 67
 (5) 5
Interest Cost16
 14
 3
 3
17
 16
 3
 3
Service Cost10
 11
 4
 3
12
 10
 4
 4
Benefits Paid(16) (17) (5) (4)(20) (16) (5) (5)
Projected Benefit Obligation at End of Year407
 330
 81
 74
394
 407
 78
 81
Change in Plan Assets              
Fair Value of Plan Assets at Beginning of Year307
 275
 10
 7
335
 307
 12
 10
Actual Return on Plan Assets35
 27
 1
 1
(3) 35
 
 1
Benefits Paid(16) (17) (5) (4)(20) (16) (5) (5)
Employer Contributions (1)9
 22
 6
 6
24
 9
 6
 6
Fair Value of Plan Assets at End of Year335
 307
 12
 10
336
 335
 13
 12
Funded Status at End of Year$(72) $(23) $(69) $(64)$(58) $(72) $(65) $(69)
(1) 
In 2015,2016, TEP expects to contribute $23$10 million to the pension plans.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The following table provides the components of TEP’s regulatory assets and accumulated other comprehensive loss that have not been recognized as components of net periodic benefit cost as of the dates presented:
Pension Benefits 
Other Retiree
Benefits
Pension Benefits Other Retiree Benefits
Years Ended December 31,Year Ended December 31,
2014 2013 2014 2013
Millions of Dollars
(in millions)2015 2014 2015 2014
Net Loss$118
 $74
 $11
 $6
$117
 $118
 $6
 $11
Prior Service Cost (Benefit)4
 
 (2) (2)3
 4
 (1) (2)
The accumulated benefit obligation aggregated for all pension plans is $355 million and $365 million at December 31, 2015 and 2014, and $297 million at December 31, 2013.
respectively.
Information for Pension Plans with Accumulated Benefit Obligations in excess of Pension Plan Assets:
 December 31,
 2014 2013
 Millions of Dollars
Accumulated Benefit Obligation at End of Year$365
 $13
Fair Value of Plan Assets at End of Year335
 
Only the SERP, which is unfunded,All three of our pension plans had accumulated benefit obligations in excess of plan assets at December 31, 2013. Due to decreases2014. As a result of increases in discount rates and changes in mortality projections which reflect a longer life expectancy, allemployer contributions, two of our plans had accumulated benefit obligations in excess of plan assets at December 31, 2014.2015. The following table includes information for pension plans with accumulated benefit obligations in excess of pension plan assets:

78

 December 31,
(in millions)2015 2014
Accumulated Benefit Obligation$188
 $365
Fair Value of Plan Assets169
 335


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Net periodic benefit plan cost includes the following components:
Pension Benefits Other Retiree BenefitsPension Benefits Other Retiree Benefits
Year Ended December 31,Year Ended December 31,
2014 2013 2012 2014 2013 2012
Millions of Dollars
(in millions)2015 2014 2013 2015 2014 2013
Service Cost$10
 $11
 $9
 $4
 $3
 $3
$12
 $10
 $11
 $4
 $4
 $3
Interest Cost16
 14
 15
 3
 3
 3
17
 16
 14
 3
 3
 3
Expected Return on Plan Assets(21) (19) (17) (1) (1) 
(23) (21) (19) (1) (1) (1)
Actuarial Loss Amortization3
 8
 7
 
 
 
7
 3
 8
 
 
 
Net Periodic Benefit Cost$8
 $14
 $14
 $6
 $5
 $6
$13
 $8
 $14
 $6
 $6
 $5
Approximately 20% of the net periodic benefit cost was capitalized as a cost of construction and the remainder was included in income.
We measured service and interest costs for pension and other postretirement benefits utilizing a single weighted-average discount rate derived from the yield curve used to measure the plan obligations. At the end of 2015, we changed our approach to determine the service and interest cost components of pension and other postretirement benefit expense. We elected to measure service and interest costs by applying the specific spot rates along that yield curve to the plans' liability cash flows beginning in 2016. TEP believes the new approach provides a more precise measurement of service and interest costs by aligning the timing of the plans' liability cash flows to the corresponding spot rates on the yield curve. This change does not affect the measurement of our plan obligations nor the funded status. We accounted for this change as a change in accounting estimate, and accordingly, have accounted for it on a prospective basis.
The changes in plan assets and benefit obligations recognized as regulatory assets or in AOCI are as follows:
 Pension Benefits
 2014 2013 2012
 
Regulatory
Asset
 AOCI 
Regulatory
Asset
 AOCI 
Regulatory
Asset
 AOCI
 Millions of Dollars
Current Year Actuarial (Gain) Loss$49
 $3
 $(42) $(1) $28
 $1
Amortization of Actuarial Gain (Loss)(3) 
 (8) 
 (7) 
Total Recognized (Gain) Loss$46
 $3
 $(50) $(1) $21
 $1
 Other Retiree Benefits
 2014 2013 2012
 
Regulatory
Asset
 
Regulatory
Asset
 
Regulatory
Asset
 Millions of Dollars
Current Year Actuarial (Gain) Loss$5
 $(6) $2
 Pension Benefits
 Regulatory Asset AOCI
(in millions)2015 2014 2013 2015 2014 2013
Current Year Actuarial (Gain) Loss$5
 $49
 $(42) $
 $3
 $(1)
Amortization of Actuarial Gain (Loss)(7) (3) (8) 
 
 
Total Recognized (Gain) Loss$(2) $46
 $(50) $
 $3
 $(1)

75



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



 Other Retiree Benefits
 Regulatory Asset
(in millions)2015 2014 2013
Current Year Actuarial (Gain) Loss$(4) $5
 $(6)
For all pension plans, we amortize prior service costs on a straight-line basis over the average remaining service period of employees expected to receive benefits under the plan. We willexpect to amortize an estimated $7 million estimated net loss from pension regulatory assets and less than $0.5an estimated $1 million in prior service credit from other regulatory assets and less than $0.5 million net loss and less than $0.5 million prior service cost from AOCI into net periodic benefit cost in 2015. Less than $0.5 million estimated net loss and less than $0.5 million prior service benefit for the other retiree benefit plan will be amortized from other regulatory assets into net periodic benefit cost in 2015.2016.
The following table includes the weighted average assumptions used to determine benefit obligations:
 Pension Benefits 
Other Retiree
Benefits
 2014 2013 2014 2013
Weighted-Average Assumptions Used to Determine
Benefit Obligations as of December 31,
       
Discount Rate4.1 - 4.2% 5.0% - 5.1% 3.9% 4.7%
Rate of Compensation Increase3.0% 3.0% N/A N/A
Pension Benefits Other Retiree BenefitsPension Benefits Other Retiree Benefits
2014 2013 2012 2014 2013 20122015 2014 2015 2014
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31, 
Discount Rate5.0% - 5.1% 4.1% - 4.1% 4.9% - 5.0% 4.7% 3.8% 4.7%4.5-4.6% 4.1-4.2% 4.2% 3.9%
Rate of Compensation Increase3.0% 3.0% 3.0% N/A N/A N/A3.0% 3.0% N/A N/A
Expected Return on Plan Assets7.0% 7.0% 7.0% 7.0% 7.0% 7.0%
The following table includes the weighted average assumptions used to determine net periodic benefit costs:

79
 Pension Benefits Other Retiree Benefits
 2015 2014 2013 2015 2014 2013
Discount Rate4.1%-4.2% 5.0%-5.1% 4.1%-4.1% 3.9% 4.7% 3.8%
Rate of Compensation Increase3.0% 3.0% 3.0% N/A N/A N/A
Expected Return on Plan Assets7.0% 7.0% 7.0% 7.0% 7.0% 7.0%



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Net periodic benefit cost is subject to various assumptions and determinations, such as the discount rate, the rate of compensation increase, and the expected return on plan assets.
We use a combination of sources in selecting the expected long-term rate-of-return-on-assets assumption, including an investment return model. The model used provides a “best-estimate” range over 20 years from the 25th percentile to the 75th percentile. The model, used as a guideline for selecting the overall rate-of-return-on-assets assumption, is based on forward looking return expectations only. The above method is used for all asset classes.
Changes that may arise over time with regard to these assumptions and determinations will change amounts recorded in the future as net periodic benefit cost. The following table includes the assumed health care cost trend rates follow:rates:
 December 31,
 2014 2013
Health Care Cost Trend Rate Assumed for Next Year6.7% 6.7%
Ultimate Health Care Cost Trend Rate Assumed4.5% 4.5%
Year that the Rate Reaches the Ultimate Trend Rate2027 2027
 December 31,
 2015 2014
Next Year7.6% 6.7%
Ultimate Rate Assumed4.5% 4.5%
Year Ultimate Rate is Reached2036 2027
Assumed health care cost trend rates significantly affect the amounts reported for health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following effects on the December 31, 2014,2015 amounts:
One-Percentage-
Point Increase
 
One-Percentage-
Point Decrease
Millions of Dollars
(in millions)
One-Percentage-
Point Increase
 
One-Percentage-
Point Decrease
Effect on Total Service and Interest Cost Components$1
 $1
$1
 $1
Effect on Retiree Benefit Obligation7
 6
6
 5

76



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



PENSION PLAN AND OTHER RETIREE BENEFIT ASSETS
Pension Assets
We calculate the fair value of plan assets on December 31, the measurement date. Pension plan asset allocations, by asset category, on the measurement date were as follows:
2014 20132015 2014
Asset Category  
Equity Securities48% 50%49% 48%
Fixed Income Securities43% 40%41% 43%
Real Estate7% 7%8% 7%
Other2% 3%2% 2%
Total100% 100%100% 100%

80



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The following tables settable sets forth the fair value measurements of pension plan assets by level within the fair value hierarchy:
Fair Value Measurements of Pension Assets
December 31, 2014
Quoted Prices in
Active Markets
(Level 1)
 
Significant Other Observable Inputs
(Level 2)
 
Significant Unobservable Inputs
(Level 3)
 Total
Quoted Prices
in Active
Markets
(Level 1)
 
Significant Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 Total
Millions of Dollars
(in millions)December 31, 2015
Asset Category              
Cash Equivalents$1
 $
 $
 $1
$1
 $
 $
 $1
Equity Securities:              
United States Large Cap
 82
 
 82

 81
 
 81
United States Small Cap
 17
 
 17

 17
 
 17
Non-United States
 61
 
 61

 67
 
 67
Fixed Income
 143
 
 143

 137
 
 137
Real Estate
 8
 16
 24

 8
 18
 26
Private Equity
 
 7
 7

 
 7
 7
Total$1
 $311
 $23
 $335
$1
 $310
 $25
 $336
              
Fair Value Measurements of Pension Assets
December 31, 2013
Level 1 Level 2 Level 3 Total
Millions of Dollars
(in millions)December 31, 2014
Asset Category              
Cash Equivalents$1
 $
 $
 $1
$1
 $
 $
 $1
Equity Securities:      
      

United States Large Cap
 76
 
 76

 82
 
 82
United States Small Cap
 16
 
 16

 17
 
 17
Non-United States
 62
 
 62

 61
 
 61
Fixed Income
 124
 
 124

 143
 
 143
Real Estate
 7
 14
 21

 8
 16
 24
Private Equity
 
 7
 7

 
 7
 7
Total$1
 $285
 $21
 $307
$1
 $311
 $23
 $335
Level 1 cash equivalents are based on observable market prices and are comprised of the fair value of commercial paper, money market funds, and certificates of deposit.
Level 2 investments comprise amounts held in commingled equity funds, United States bond funds, and real estate funds. Valuations are based on active market quoted prices for assets held by each respective fund.
Level 3 real estate investments were valued using a real estate index value. The real estate index value was developed based on appraisals comprising 100% of real estate assets tracked by the index in 2014 and comprising 85% in 2013.index.
Level 3 private equity funds are classified as funds-of-funds. They are valued based on individual fund manager valuation models.

77



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The following tables settable sets forth a reconciliation of changes in the fair value of pension assets classified as Level 3 in the fair value hierarchy. There were no transfers in or out of Level 3.

81



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



 Year Ended
December 31, 2014
 
Private
Equity
 Real Estate Total
 Millions of Dollars
Beginning Balance at January 1, 2014$7
 $14
 $21
Actual Return on Plan Assets:     
Assets Held at Reporting Date1
 2
 3
Purchases, Sales, and Settlements(1) 
 (1)
Ending Balance at December 31, 2014$7
 $16
 $23
Year Ended
December 31, 2013
Private
Equity
 Real Estate Total
Millions of Dollars
Beginning Balance at January 1, 2013$6
 $13
 $19
(in millions)Private Equity Real Estate Total
Beginning Balance at January 1, 2014$7
 $14
 $21
Actual Return on Plan Assets:         

Assets Held at Reporting Date1
 1
 2
1
 2
 3
Ending Balance at December 31, 2013$7
 $14
 $21
Purchases, Sales, and Settlements(1) 
 (1)
Ending Balance at December 31, 20147
 16
 23
Actual Return on Plan Assets:     
Assets Held at Reporting Date1
 2
 3
Purchases, Sales, and Settlements(1) 
 (1)
Ending Balance at December 31, 2015$7
 $18
 $25
Pension Plan Investments
Investment Goals
Asset allocation is the principal method for achieving each pension plan’s investment objectives while maintaining appropriate levels of risk. We consider the projected impact on benefit security of any proposed changes to the current asset allocation policy. The expected long-term returns and implications for pension plan sponsor funding are reviewed in selecting policies to ensure that current asset pools are projected to be adequate to meet the expected liabilities of the pension plans. We expect to use asset allocation policies weighted most heavily to equity and fixed income funds, while maintaining some exposure to real estate and opportunistic funds. Within the fixed income allocation, long-duration funds may be used to partially hedge interest rate risk.
Risk Management
We recognize the difficulty of achieving investment objectives in light of the uncertainties and complexities of the investment markets. We also recognize some risk must be assumed to achieve a pension plan’s long-term investment objectives. In establishing risk tolerances, the following factors affecting risk tolerance and risk objectives will be considered: plan status, plan sponsor financial status and profitability, plan features, and workforce characteristics. We have determined that the pension plans can tolerate some interim fluctuations in market value and rates of return in order to achieve long-term objectives. TEP tracks each pension plan’s portfolio relative to the benchmark through quarterly investment reviews. The reviews consist of a performance and risk assessment of all investment categories and on the portfolio as a whole. Investment managers for the pension plan may use derivative financial instruments for risk management purposes or as part of their investment strategy. Currency hedges may also be used for defensive purposes.
Relationship between Plan Assets and Benefit Obligations
The overall health of each plan will be monitored by comparing the value of plan obligations (both Accumulated Benefit Obligation and Projected Benefit Obligation) against the fair value of assets and tracking the changes in each. The frequency of this monitoring will depend on the availability of plan data, but will be no less frequent than annually via actuarial valuation.

8278



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Target Allocation Percentages
The current target allocation percentages for the major asset categories of the plan as of December 31, 20142015 follow. Each plan allows a variance of +/- 2% from these targets before funds are automatically rebalanced.
TEP Plans VEBA TrustTEP Plans VEBA Trust
Cash/Treasury Bills—% 2%
Equity Securities: 
United States Large Cap24% 39%
United States Small Cap5% 5%
Non-United States Developed15% 7%
Non-United States Emerging5% 9%
Fixed Income41% 38%42% 38%
United States Large Cap24% 39%
Non-United States Developed15% 7%
Real Estate8% —%8% —%
United States Small Cap5% 5%
Non-United States Emerging5% 9%
Private Equity2% —%1% —%
Cash/Treasury Bills—% 2%
Total100% 100%100% 100%
Pension Fund Descriptions
For each type of asset category selected by the Pension Committee, our investment consultant assembles a group of third-party fund managers and allocates a portion of the total investment to each fund manager. In the case of the private equity fund, our investment consultant directs investments to a private equity manager that invests in third-parties’ funds.
Other Retiree Benefit Assets
As of December 31, 2015, the fair value of VEBA trust assets was $13 million, of which $5 million were fixed income investments and $8 million were equities. As of December 31, 2014, the fair value of VEBA trust assets was $12 million, of which $4 million were fixed income investments and $8 million were equities. As of December 31, 2013, the fair value of VEBA trust assets was $10 million, of which $4 million were fixed income investments and $6 million were equities. The VEBA trust assets are primarily Level 2. There are no Level 3 assets in the VEBA trust.
ESTIMATED FUTURE BENEFIT PAYMENTS
TEP expects the following benefit payments to be made by the defined benefit pension plans and other retiree benefit plan, which reflect future service, as appropriate.
 2015
 2016
 2017
 2018
 2019
 2020-2024
 Millions of Dollars
Pension Benefits$17
 $17
 $19
 $20
 $21
 $121
Other Retiree Benefits5
 5
 5
 5
 6
 33
One of TEP’s noncontributory defined benefit pension plans was amended in 2012 to allow terminated participants to elect early retirement benefits equal to the actuarial equivalent of the participant’s termination retirement benefit. The impact of the amendment on estimated future benefit payments was approximately $5 million in total, and the effect on the pension benefit obligation was less than $1 million.
(in millions)2016 2017 2018 2019 2020 2021-2025
Pension Benefits$17
 $18
 $19
 $21
 $22
 $125
Other Retiree Benefits5
 5
 5
 6
 6
 33
DEFINED CONTRIBUTION PLAN
We offer a defined contribution savings plan to all eligible employees. The Internal Revenue Code identifies the plan as a qualified 401(k) plan. Participants direct the investment of contributions to certain funds in their account. We match part of a participant’s contributions to the plan. TEP made matching contributions to the plan of $5 million in each of2015, 2014, 2013, and 2012.2013.

NOTE 9. SHARE-BASED COMPENSATION
2011 STOCK AND INCENTIVE PLAN
The Fortis acquisition of UNS Energy in 2014 resulted in accelerated vesting and expense recognition of all outstanding non-vested UNS Energy share-based awards issued under the UNS Energy 2011 Omnibus Stock and Incentive Plan (2011 Plan). The outstanding non-vested awards would otherwise have been recognized over remaining vesting periods through February 2017. TEP recognized approximately $2 million of expense in 2014 due to the accelerated vesting of the awards. TEP recorded total share-based compensation expense of $5 million for the year ended December 31, 2014 and $3 million for the year ended December 31, 2013. In August 2014, UNS Energy settled all outstanding share-based compensation awards related to the 2011 Plan in cash.

8379



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



2015 SHARE UNIT PLAN
The Human Resources and Governance Committee (Committee) of UNS Energy, approved and UNS Energy's Board of Directors ratified the 2015 Share Unit Plan (Plan) effective as of January 1, 2015. Under the Plan, key employees, including executive officers of UNS Energy and its subsidiaries, may be granted long-term incentive awards of performance-based share units (PSUs) and time-based restricted share units (RSUs) annually. Each PSU and RSU granted will be valued based on one share of Fortis common stock converted to U.S. dollars. Fortis common stock is traded on the Toronto Stock Exchange. TEP’s share of the obligation and expense as a subsidiary of UNS Energy is allocated based on the Massachusetts Formula.
UNS Energy awarded 47,776 PSUs and 23,888 RSUs in 2015 that are payable on the third anniversary of the grant date. The awards are classified as liability awards based on the cash settlement feature. Liability awards are measured at their fair value at the end of each reporting period and will fluctuate based on the price of Fortis common stock as well as the level of achievement of the financial performance criteria. At December 31, 2015, TEP's allocated share of probable payout is $2 million.
TEP's allocated portion of the compensation expense is recognized in Operations and Maintenance on the Consolidated Statements of Income. Compensation expense associated with unvested PSUs and RSUs is recognized on a straight-line basis over the minimum required service period in an amount equal to the fair value on the measurement date or each reporting period. TEP recorded $1 million for the year ended December 31, 2015 based on its share of UNS Energy's compensation expense.

NOTE 9.10. SUPPLEMENTAL CASH FLOW INFORMATION
CASH PAYMENTSTRANSACTIONS
 Years Ended December 31,
 2014 2013 2012
 Thousands of Dollars
Interest Paid, Net of Amounts Capitalized$(82,653) $(52,589) (52,125)
Income Taxes Paid
 
 (1,796)
 Year Ended December 31,
(in millions)2015 2014 2013
Interest, Net of Amounts Capitalized$65
 $83
 $53
Income Taxes
 
 
NON-CASH TRANSACTIONS
In 2014, the following non-cash transactions occurred:
In April 2014, TEP recorded an increase of $109 million to both Utility Plant Under Capital Leases and Current Obligations Under Capital Leases due to TEP's commitment to purchase leased interests in April 2015. See Note 5 of Notes to Consolidated Financial Statements.
In 2013, the following non-cash transactions occurred:
TEP recorded an increase of $55 million to both Utility Plant Under Capital Leases and Capital Lease Obligations due to TEP's commitment to purchase leased interests in December 2014 and January 2015.
In March 2013, the Industrial Development Authority of Pima County, Arizona issued approximately $91 million aggregate principal amount of unsecured tax-exempt Industrial Development Revenue Bonds (IDRBs) for the benefit of TEP. The proceeds were used to redeem debt using a trustee. Since the cash flowed through a trust account, the issuance and redemption of debt resulted in a non-cash transaction.
In November 2013, the Industrial Development Authority of Apache County, Arizona issued $100 million of tax-exempt, variable rate IDRBs for the benefit of TEP. The proceeds were deposited with the trustee to redeem debt in December 2013. TEP had no cash receipts or payments as a result of this transaction. See Note 5 of Notes to Consolidated Financial Statements.
In 2012, the following non-cash transactions occurred:
In June 2012, the Industrial Development Authority of Pima County, Arizona issued approximately $16 million of unsecured tax-exempt IDBs. In March 2012, the Industrial Development Authority of Apache County, Arizona issued $177 million of unsecured tax-exempt pollution control bonds. In 2012, TEP redeemed the $193 million of tax-exempt bonds and reissued debt using a trustee. Since the cash flowed through trust accounts, the redemption and reissuance of debt resulted in a non-cash transaction at TEP.
Other significant non-cash investing and financing activities that affected recognized assets and liabilities but did not result in cash receipts or payments were as follows:
 Years Ended December 31,
 2014 2013 2012
 Thousands of Dollars
(Decrease)/Increase to Utility Plant Accruals(1)
$5,138
 $4,995
 $4,813
Net Cost of Removal of Interim Retirements(2)
12,128
 25,182
 35,983
Capital Lease Obligations(3)
1,107
 9,039
 11,967
Asset Retirement Obligations(4)
4,117
 8,064
 789
 Year Ended December 31,
(in millions)2015 2014 2013
Accrued Capital Expenditures$28
 $29
 $24
Net Cost of Removal of Interim Retirements (1)
1
 12
 25
Commitment to Purchase Capital Lease Interests
 109
 55
Capital Lease Obligations (2)

 1
 9
Proceeds from Issuance of Long-Term Debt Deposited in Trust
 
 191
Asset Retirement Obligations (3)
3
 4
 8
(1)
The non-cash additions to Utility Plant represent accruals for capital expenditures.
(2) 
The non-cash net cost of removal of interim retirements represents an accrual for future asset retirement obligations that does not impact earnings.
(3)(2) 
The non-cash change in capital lease obligations represents interest accrued for accounting purposes in excess of interest payments.
(4)(3) 
The non-cash additions to asset retirement obligations and related capitalized assets represent a revision of estimated asset retirement cost due to changes in timing and amount of the expected future asset retirement obligations.

84


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



NOTE 10.11. FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS
We categorize our financial instruments into the three-level hierarchy based on inputs used to determine the fair value. Level 1 inputs are unadjusted quoted prices for identical assets or liabilities in an active market. Level 2 inputs include quoted prices for similar assets or liabilities, quoted prices in non-active markets, and pricing models whose inputs are observable, directly or

80



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



indirectly. Level 3 inputs are unobservable and supported by little or no market activity. Transfers between levels are recorded at the end of a reporting period. There were no transfers between levels in the periods presented.
FINANCIAL INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS
The following tables present, by level within the fair value hierarchy, TEP’s assets and liabilities accounted for at fair value on a recurring basis. These assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.
Total Level 1 Level 2 Level 3 
Counterparty Netting of Energy Contracts Not Offset on the Balance Sheets(5)
 Net AmountLevel 1 Level 2 Level 3 Total
December 31, 2014
Millions of Dollars
(in millions)December 31, 2015
Assets    
Cash Equivalents(1)
$15
 $15
 $
 $
 $
 $15
$33
 $
 $
 $33
Restricted Cash(1)
2
 2
 
 
 
 2
4
 
 
 4
Rabbi Trust Investments(2)
26
 
 26
 
 
 26
Energy Contracts - Regulatory Recovery(3)
1
 
 
 1
 (1) 
Energy Contracts - No Regulatory Recovery(3)
1
 
 
 1
 (1) 
Energy Derivative Contracts - Regulatory Recovery(2)

 1
 
 1
Energy Derivative Contracts - No Regulatory Recovery(2)

 
 1
 1
Total Assets45
 17
 26
 2
 (2) 43
37
 1
 1
 39
Liabilities                  
Energy Contracts - Regulatory Recovery(3)
(18) 
 (9) (9) 1
 (17)
Energy Contracts - No Regulatory Recovery(3)
(1) 
 
 (1) 1
 
Energy Contracts - Cash Flow Hedge(3)
(1) 
 
 (1) 
 (1)
Interest Rate Swaps(4)
(5) 
 (5) 
 
 (5)
Energy Derivative Contracts - Regulatory Recovery(2)

 (10) (3) (13)
Interest Rate Swap(3)

 (3) 
 (3)
Total Liabilities(25) 
 (14) (11) 2
 (23)
 (13) (3) (16)
Net Total Assets (Liabilities)$20
 $17
 $12
 $(9) $
 $20
$37
 $(12) $(2) $23
Total Level 1 Level 2 Level 3 
Counterparty Netting of Energy Contracts Not Offset on the Balance Sheets(5)
 Net Amount
December 31, 2013
Millions of Dollars
(in millions)December 31, 2014
Assets    
Cash Equivalents(1)
$
 $
 $
 $
 $
 $
$15
 $
 $
 $15
Restricted Cash(1)
2
 2
 
 
 
 2
2
 
 
 2
Rabbi Trust Investments(2)
22
 
 22
 
 
 22
Energy Contracts - Regulatory Recovery(3)
2
 
 1
 1
 (1) 1
Energy Derivative Contracts - Regulatory Recovery(2)
��
 
 2
 2
Total Assets26
 2
 23
 1
 (1) 25
17
 
 2
 19
Liabilities                  
Energy Contracts - Regulatory Recovery(3)
(2) 
 
 (2) 1
 (1)
Energy Contracts - Cash Flow Hedge(3)
(1) 
 
 (1) 
 (1)
Interest Rate Swaps(4)
(7) 
 (7) 
 
 (7)
Energy Derivative Contracts - Regulatory Recovery(2)

 (9) (9) (18)
Energy Derivative Contracts - No Regulatory Recovery(2)

 
 (1) (1)
Energy Derivative Contracts - Cash Flow Hedge(2)

 
 (1) (1)
Interest Rate Swap(3)

 (5) 
 (5)
Total Liabilities(10) 
 (7) (3) 1
 (9)
 (14) (11) (25)
Net Total Assets (Liabilities)$16
 $2
 $16
 $(2) $
 $16
$17
 $(14) $(9) $(6)

85


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



(1) 
Cash Equivalents and Restricted Cash represent amounts held in money market funds and certificates of deposit valued at cost, including interest, which approximates fair market value. Cash Equivalents are included in Cash and Cash Equivalents on the balance sheets.Consolidated Balance Sheets. Restricted Cash is included in Investments and Other Property – Other on the balance sheets.Consolidated Balance Sheets.
(2)
Rabbi Trust Investments include amounts related to deferred compensation and Supplement Executive Retirement Plan (SERP) benefits held in mutual and money market funds valued at quoted prices traded in active markets. These investments are included in Investments and Other Property – Other on the balance sheets.
(3) 
Energy Contracts include gas swap agreements (Level 2), power options (Level 2), gas options (Level 3), forward power purchase and sales contracts (Level 3) entered into to reduce exposure to energy price risk, and, at December 31, 2014 a power sale option (Level 3). These contracts are included in Derivative Instruments on the balance sheets.Consolidated Balance Sheets. The valuation techniques are described below.
(4)(3) 
The Interest Rate Swaps still held areSwap is valued using an income valuation approach based on the 6-month London Interbank Offered Rate (LIBOR). An interest rate swap valued based on the Securities IndustryLIBOR and Financial Markets Association Municipal swap index matured in September 2014. These interest rate swaps areis included in Derivative Instruments on the balance sheets.Consolidated Balance Sheets.
(5)
81


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



All energy derivative contracts are subject to legally enforceable master netting arrangements to mitigate credit risk. We present derivatives on a gross basis on the balance sheet. The tables below presents the potential offset of counterparty netting and cash collateral.
 Gross Amount Recognized on the Balance Sheets Gross Amount Not Offset on the Balance Sheets Net Amount
  Counterparty Netting of Energy Contracts Cash Collateral Received/Posted 
(in millions)December 31, 2015
Derivative Assets       
Energy Derivative Contracts$2
 $1
 $
 $1
Derivative Liabilities       
Energy Derivative Contracts(13) (1) 
 (12)
Interest Rate Swap(3) 
 
 (3)
(in millions)December 31, 2014
Derivative Assets       
Energy Derivative Contracts$2
 $2
 $
 $
Derivative Liabilities       
Energy Derivative Contracts(20) (2) 
 (18)
Interest Rate Swap(5) 
 
 (5)
All energy contracts are subject to legally enforceable master netting arrangements to mitigate credit risk. We have presented the effect of offset by counterparty; however, we present derivatives on a gross basis on the balance sheets.
DERIVATIVE INSTRUMENTS
We enter into various derivative and non-derivative contracts to reduce our exposure to energy price risk associated with our gas and purchased power requirements. The objectives for entering into such contracts include: creating price stability; meeting load and reserve requirements; and reducing exposure to price volatility that may result from delayed recovery under the PPFAC.
We primarily apply the market approach for recurring fair value measurements. When we have observable inputs for substantially the full term of the asset or liability or use quoted prices in an inactive market, we categorize the instrument in Level 2. We categorize derivatives in Level 3 when we use an aggregate pricing service or published prices that represent a consensus reporting of multiple brokers.
For both power and gas prices we obtain quotes from brokers, major market participants, exchanges, or industry publications and rely on our own price experience from active transactions in the market. We primarily use one set of quotations each for power and for gas and then validate those prices using other sources. We believe that the market information provided is reflective of market conditions as of the time and date indicated.
Published prices for energy derivative contracts may not be available due to the nature of contract delivery terms such as non-standard time blocks and non-standard delivery points. In these cases, we apply adjustments based on historical price curve relationships, transmission, and line losses.
We estimate the fair value of our gas options using a Black-Scholes-Merton option pricing model which includes inputs such as implied volatility, interest rates, and forward price curves. In the first half of 2013, we also used this pricing model to value our power purchase options. Beginning in the third quarter of 2013, the fair value of our power purchase options is based on contractually specified option premiums instead of the Black-Scholes-Merton option pricing model because the needed inputs are no longer available. Based on the change, we transferred the purchase power options out of Level 3 and in to Level 2 at the end of third quarter of 2013. The amount transferred was less than $0.5 million. We record transfers between levels in the fair value hierarchy at the end of the reporting period. There were no other transfers between levels in the periods presented.
The December 31, 2014 valuation of our power sale option iswas a function of observable market variables, regional power and gas prices, as well as the ratio between the two, which represents the prevailing market heat rate.
We also consider the impact of counterparty credit risk using current and historical default and recovery rates, as well as our own credit risk using credit default swap data.
The inputs and our assessments of the significance of a particular input to the fair value measurements require judgment and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels. We review the assumptions underlying our price curves monthly.

86


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Cash Flow Hedges
We can enter into interest rate swaps to mitigate the exposure to volatility in variable interest rates on debt. At December 31, 2014, weWe have onean interest rate swap agreement whichthat expires in January 2020. We also havehad a power purchase swap to hedge the cash flow risk associated with

82


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



a long-term power supply agreement. The power purchase swap agreement expireswhich expired in September 2015. The after-tax unrealized gains and losses on cash flow hedge activities are reported in the statementsstatement of comprehensive income. The loss expected to be reclassified to earnings within the next twelve months is estimated to be $3$1 million. The realized losses from our cash flow hedges are shown in the following table:
 Year Ended December 31,
(in millions)2015 2014 2013
Capital Lease Interest Expense$2
 $2
 $2
Long-Term Debt Interest Expense
 1
 1
Purchased Power1
 1
 1
As of December 31, 2015, the total notional amount of our interest rate swap was $29 million.
Energy Derivative Contracts - Regulatory Recovery
We record unrealized gains and losses on energy purchase contracts that are recoverable through the PPFAC on the balance sheetssheet as a regulatory asset or a regulatory liability rather than reporting the transaction in the income statementsstatement or in the statementsstatement of other comprehensive income, as shown in following tables:table:
 Year Ended December 31,
 2014 2013 2012
 Millions of Dollars
Unrealized Net Gain (Loss) Recorded to Regulatory (Assets)/Liabilities$(18) $
 $6
Realized gains and losses on settled contracts are fully recoverable through the PPFAC.
 Year Ended December 31,
(in millions)2015 2014 2013
Unrealized Net Gain (Loss) Recorded to Regulatory (Assets) Liabilities$6
 $(18) $
Energy Derivative Contracts - No Regulatory Recovery
From time to time, TEP may enter into forwardForward contracts with long-term wholesale customers that qualify as derivatives. We record unrealized gains and losses on these energy derivatives in the income statement as they do not qualify for regulatory recovery. For these contracts that qualify as derivatives, we record unrealized gains and losses in the income statement, unless and until a normal purchase or normal sale election is made. In December 2014,February 2015, TEP entered intomade a normal sale election for a three-year sales option contract.contract entered into in December 2014. In June 2015, TEP entered into long-term power trading contracts that qualify as derivatives but do not qualify for regulatory recovery. The unrealized gaingains and losses on the long-term power trading contracts are recorded in Electric Wholesale Sales in 2014 was less than $1 million.the income statement, and 10% of any gains will be shared with ratepayers through the PPFAC, as realized.
Derivative Volumes
At December 31, 2014,2015, we have energy contracts that will settle through the fourth quarter of 2017.2018. The volumes associated with our energy contracts were as follows:
December 31,
December 31, 2014 December 31, 20132015 2014
Power Contracts GWh2,604
 779
1,752
 2,604
Gas Contracts GBtu19,932
 9,615
17,214
 19,932

8783


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Level 3 Fair Value Measurements
The following table provides quantitative information regarding significant unobservable inputs in TEP’s Level 3 fair value measurements:
   Fair Value at       
 Valuation December 31, 2014   Range of
��Approach Assets Liabilities Unobservable Inputs Unobservable Input
   Millions of Dollars   Minimum Maximum
Forward Power ContractsMarket approach $1
 $(6) Market price per MWh $22.35
 $39.05

           
Power Sale OptionMarket approach 1
 (1) Market price per MWh $27.75
 $44.94

      Market price per MMbtu $2.88
 $4.02
            
Gas Option ContractsOption model 
 (4) Market price per MMbtu $2.72
 $3.26

      Gas volatility 30.8% 53.29%
Level 3 Energy Contracts  $2
 $(11)      
            
   Fair Value at       
 Valuation December 31, 2013   Range of
 Approach Assets Liabilities Unobservable Inputs Unobservable Input
   Millions of Dollars   Minimum Maximum
Forward Power ContractsMarket approach $
 $(3) Market price per MWh $27.00
 $48.25
            
Gas Option ContractsOption model 1
 
 Market price per MMbtu $3.88
 $4.32
       Gas volatility 25.05% 35.07%
Level 3 Energy Contracts  $1
 $(3)      
 Valuation Fair Value of   Range of
 Approach Assets Liabilities Unobservable Inputs Unobservable Input
(in millions)December 31, 2015
Forward Power ContractsMarket approach $1
 $(2) Market price per MWh $19.20
 $31.35
            
Gas Option ContractsOption model 
 (1) Market price per MMbtu $2.17
 $2.69

      Gas volatility 31.0% 58.3%
Level 3 Energy Contracts  $1
 $(3)      
            
(in millions)December 31, 2014
Forward Power ContractsMarket approach $1
 $(6) Market price per MWh $22.35
 $39.05
            
Power Sale OptionMarket approach 1
 (1) Market price per MWh $27.75
 $44.94
       Market price per MMbtu $2.88
 $4.02
            
Gas Option ContractsOption model 
 (4) Market price per MMbtu $2.72
 $3.26
       Gas volatility 30.8% 53.3%
Level 3 Energy Contracts  $2
 $(11)      
Changes in one or more of the unobservable inputs could have a significant impact on the fair value measurement depending on the magnitude of the change and the direction of the change for each input. Generally, theThe impact of changes to fair value, including changes from unobservable inputs, are subject to recovery or refund through the PPFAC mechanism and are reported on the balance sheet as a regulatory asset or regulatory liability, or as a component of other comprehensive income, rather than in the income statement.
The following tables presenttable presents a reconciliation of changes in the fair value of assets and liabilities classified as Level 3 in the fair value hierarchy:
  Year Ended December 31,
  2014 2013
  Millions of Dollars
Balances at Beginning of Year $(2) $
Realized/Unrealized Gains/(Losses) Recorded to:    
Net Regulatory Assets/Liabilities – Derivative Instruments (8) (2)
Settlements 1
 
Balances at End of Year $(9) $(2)
     
Total Gains/(Losses) Attributable to the Change in Unrealized Gains/(Losses) Relating to Assets/(Liabilities) Still Held at the End of the Period $(8) $(1)
 Year Ended December 31,
(in millions)2015 2014
Beginning of Period$(9) $(2)
Gains (Losses) Recorded to:(1)
   
Net Regulatory Assets/Liabilities – Derivative Instruments(4) (8)
Electric Wholesale Sales3
 
Settlements8
 1
End of Period$(2) $(9)
(1)
Includes gains (losses) attributable to the change in unrealized gains/(losses) relating to assets (liabilities) still held at the end of the period of $(1) million and $(8) million for the years ended December 31, 2015, and 2014, respectively.
CREDIT RISK
The use of contractual arrangements to manage the risks associated with changes in energy commodity prices creates credit risk exposure resulting from the possibility of non-performance by counterparties pursuant to the terms of their contractual obligations. We enter into contracts for the physical delivery of energy and gas which contain remedies in the event of non-performance by the supply counterparties. In addition, volatile energy prices can create significant credit exposure from energy market receivables and subsequent measurement at fair value.

88


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



We have contractual agreements for energy procurement and hedging activities that contain certain provisions requiring each company to post collateral under certain circumstances. These circumstances include: exposures in excess of unsecured credit

84


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



limits; credit rating downgrades; or a failure to meet certain financial ratios. In the event that such credit events were to occur, we would have to provide certain credit enhancements in the form of cash or LOCs to fully collateralize our exposure to these counterparties.
We consider the effect of counterparty credit risk in determining the fair value of derivative instruments that are in a net asset position after incorporating collateral posted by counterparties and allocate the credit risk adjustment to individual contracts. We also consider the impact of our own credit risk after considering collateral posted on instruments that are in a net liability position and allocate the credit risk adjustment to all individual contracts.
Material adverse changes could trigger credit risk-related contingent features. At December 31, 2014,2015, the value of all derivative instruments in a net liability positionpositions under contracts with credit risk-related contingent features, including contracts under the normal purchase normal sale exception, was $21$20 million, compared with $5$27 million at December 31, 2013.2014. At December 31, 2014,2015, TEP had no cash collateral posted and less than $1 million of LOCs as credit enhancements with its counterparties and held no collateral from its counterparties. The additional collateral to be posted if credit-riskIf the credit risk-related contingent features were triggered on December 31, 2015, TEP would be $21 million.have been required to post an additional $20 million of collateral of which $8 million relates to outstanding net payable balances for settled positions.
FINANCIAL INSTRUMENTS NOT CARRIED AT FAIR VALUE
The fair value of a financial instrument is the market price to sell an asset or transfer a liability at the measurement date. We use the following methods and assumptions for estimating the fair value of our financial instruments:
The carrying amounts of our current maturities of long-term debt and amounts outstandingBorrowings under ourrevolving credit agreementsfacilities approximate the fair values due to the short-term nature of these financial instruments. These items have been excluded from the table below.
For Investment in Lease Equity, we estimated the price at which an investor would realize a target internal rate of return. Our estimates included: the mix oflong-term debt, and equity an investor would use to finance the purchase; the cost of debt; the required return on equity; and income tax rates. The estimate assumed a residual value based on an appraisal of Springerville Unit 1 conducted in 2011. No impairment has been recorded as TEP expects to recover the full carrying value in retail rates. The balance was transferred to Plant in Service upon the December 2014 purchase of an additional undivided interest in Springerville Unit 1. See Note 3 of Notes to Consolidated Financial Statements.
For Long-Term Debt, we use quoted market prices, when available, or calculate the present value of remaining cash flows at the balance sheet date. When calculating present value, we use current market rates for bonds with similar characteristics such as credit rating and time-to-maturity. We consider the principal amounts of variable rate debt outstanding to be reasonable estimates of the fair value. We also incorporate the impact of our own credit risk using a credit default swap rate.
The use of different estimation methods and/or market assumptions may yield different estimated fair value amounts. The carrying values recorded onfollowing table includes the balance sheetsface value and the estimated fair valuesvalue of our financial instruments include the following:long-term debt:
   December 31, 2014 December 31, 2013
 
Fair Value
Hierarchy
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
   Millions of Dollars
Assets:         
Investment in Lease Equity(1)
Level 3 N/A
 N/A
 $36
 $25
Liabilities:         
Long-Term DebtLevel 2 1,372
 1,457
 1,223
 1,214
(1)
Balance was transferred to Plant in Service in December 2014.


89


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    
 
Fair Value
Hierarchy
 Face Value Fair Value
   December 31,
(in millions)  2015 2014 2015 2014
Liabilities         
Long-Term Debt, including Current MaturitiesLevel 2 $1,466
 $1,375
 $1,529
 $1,457



NOTE 11.12. INCOME TAXES
Income tax expense differs from the amount of income tax determined by applying the United States statutory federal income tax rate of 35% to pre-tax income due to the following:
Years Ended December 31,Year Ended December 31,
2014 2013 2012
Millions of Dollars
(in millions)2015 2014 2013
Federal Income Tax Expense at Statutory Rate$56
 $52
 $37
$70
 $56
 $52
State Income Tax Expense, Net of Federal Deduction7
 7
 5
8
 7
 7
Federal/State Tax Credits(5) (2) (1)(8) (5) (2)
Allowance for Equity Funds Used During Construction(2) (1) (1)(1) (2) (1)
Deferred Tax Asset Valuation Allowance
 2
 
1
 
 2
Investment Tax Credit Basis Adjustment - Creation of Regulatory Asset
 (11) 

 
 (11)
Other2
 1
 (1)2
 2
 1
Total Federal and State Income Tax Expense$58
 $48
 $39
$72
 $58
 $48

85


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Investment Tax Credit Basis Adjustment - Creation of Regulatory Asset
Renewable energy assets are eligible for investment tax credits. We reduce the income tax basis of those qualifying assets by half of the related investment tax credit. Historically, the difference between the income tax basis of the assets and the book basis under GAAP was recorded as a deferred tax liability with an offsetting charge to income tax expense in the year the qualifying asset was placed in service. In June 2013, we recorded a regulatory asset and corresponding reduction of income tax expense of $11 million to recover previously recorded income tax expense through future rates as a result of the 2013 TEP Rate Order. The regulatory asset will be amortized as income tax expense as the qualifying assets are depreciated.
Income tax expense included in the income statements consists of the following:
Years Ended December 31,Year Ended December 31,
2014 2013 2012
Millions of Dollars
Current Tax Expense (Benefit):     
(in millions)2015 2014 2013
Current Tax Expense (Benefit)     
Federal$(1) $(8) $(4)$
 $(1) $(8)
State
 (2) (2)
 
 (2)
Total Current Tax Expense (Benefit)(1) (10) (6)
 (1) (10)
Deferred Tax Expense (Benefit):     
Deferred Tax Expense (Benefit)     
Federal54
 47
 38
66
 54
 47
Federal Investment Tax Credits(4) (1) 
(6) (4) (1)
State9
 12
 7
12
 9
 12
Total Deferred Tax Expense (Benefit)59
 58
 45
72
 59
 58
Total Federal and State Income Tax Expense$58
 $48
 $39
$72
 $58
 $48

90


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



The significant components of deferred income tax assets and liabilities consist of the following:
December 31,December 31,
2014 2013
Millions of Dollars
Gross Deferred Income Tax Assets:   
(in millions)2015 2014
Gross Deferred Income Tax Assets   
Capital Lease Obligations$96
 $127
$27
 $96
Net Operating Loss Carryforwards187
 104
156
 187
Customer Advances and Contributions in Aid of Construction19
 19
20
 19
Alternative Minimum Tax Credit24
 24
24
 24
Accrued Postretirement Benefits23
 23
23
 23
Emission Allowance Inventory10
 10
9
 10
Investment Tax Credit Carryforward31
 6
32
 31
Other54
 38
53
 54
Total Gross Deferred Income Tax Assets444
 351
344
 444
Deferred Tax Assets Valuation Allowance(2) (2)(4) (2)
Gross Deferred Income Tax Liabilities:   
Plant – Net(699) (615)
Capital Lease Assets – Net(74) (47)
Gross Deferred Income Tax Liabilities   
Plant, Net(750) (699)
Capital Lease Assets, Net(12) (74)
Pensions(27) (22)(27) (27)
PPFAC(8) (2)
 (8)
Other(24) (20)(19) (24)
Total Gross Deferred Income Tax Liabilities(832) (706)(808) (832)
Net Deferred Income Tax Liabilities$(390) $(357)$(468) $(390)

86


The net deferred income tax liability on the balance sheets is as follows:NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    


 December 31,
 2014 2013
 Millions of Dollars
Deferred Income Taxes – Current Assets$102
 $71
Deferred Income Taxes – Noncurrent Liabilities(492) (428)
Net Deferred Income Tax Liability$(390) $(357)

TEP has recorded a $4 million valuation allowance against credit and loss carryforward deferred tax assets at December 31, 2015 and a $2 million valuation allowance against state tax credit carryforward deferred tax assets at December 31, 2014. Management believes TEP will not produce sufficient taxable income to use all state tax creditscredit and loss carryforwards before they expire.
As of December 31, 2014,2015, TEP had the following carryforward amounts:
Amount Expiring Year
Millions of Dollars  
(in millions)Amount Expiring Year
Federal Net Operating Loss$507
 2031-34$430
 2031-34
State Net Operating Loss237
 2016-34114
 2016-34
State Credits8
 2016-1910
 2016-30
Alternative Minimum Tax Credit24
 None24
 None
Investment Tax Credits31
 2032-3432
 2032-35

91


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)    



Uncertain Tax Positions
A reconciliation of the beginning and ending balances of unrecognized tax benefits follows:
 December 31,
 2014 2013
 Millions of Dollars
Unrecognized Tax Benefits, Beginning of Year$2
 $23
Additions Based on Tax Positions Taken in the Current Year2
 1
Reductions of Positions from Prior Year Based on Tax Authority Ruling
 (22)
Unrecognized Tax Benefits, End of Year$4
 $2
 December 31,
(in millions)2015 2014
Beginning of Period$4
 $2
Additions Based on Tax Positions Taken in the Current Year1
 2
End of Period$5
 $4
Unrecognized tax benefits, if recognized, would reduce income tax expense by $1 million at December 31, 2015 and would not reduce income tax expense at December 31, 2013 and December 31, 2014.
TEP recognized a $1 million reduction torecorded no interest expense in 2013during 2015 and no reduction in 2014.2014 related to uncertain tax positions. In addition, TEP had no interest payable balancesand no penalties accrued at December 31, 20142015 and December 31, 2013. We have no penalties accrued in the years presented.
In February 2013, we received a favorable ruling from the Internal Revenue Service (IRS) allowing us to deduct up-front incentive payments to customers who install renewable energy resources. These customers transfer environmental attributes or RECs associated with their renewable installations to us over the expected life of the contract for an up-front incentive payment based on the generating capacity of their installation. As a result of the IRS ruling in the first quarter of 2013, TEP reduced unrecognized tax benefits by $22 million. The changes in tax benefits primarily affected the balance sheets.2014.
TEP has been audited by the IRS through tax year 2010. TEP is not currently under audit by any federal or state tax agencies. The balance in unrecognized tax benefits could change in the next 12 months as a result of IRS audits, but we are unable to determine the amount of change.
Tangible Property Regulations
In September 2013, the U.S. Treasury Department released final income tax regulations on the deduction and capitalization of expenditures related to tangible property. These final regulations apply to tax years beginning on or after January 1, 2014. Several of the provisions within the regulations will require a tax accounting method change to be filed with the IRS resulting in a cumulative effect adjustment. The adoption of these regulations by TEP resulted in a $22 million increase to plant-related deferred tax liabilities and net operating loss deferred tax assets at December 31, 2014.

NOTE 12.13. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS
In April 2014,We consider the Financialapplicability and impact of all Accounting Standards Board (FASB) issued an accounting standards update that limits the circumstances under which a disposal mayUpdates. Updates not listed below were assessed and determined to be reported as a discontinued operation and requires new disclosures. This guidance will be effective in the first quarter of 2015. We doeither not expect the adoption of this guidanceapplicable or are expected to have anminimal impact on the presentationour consolidated financial position, results of our financial statementsoperations, or our disclosures.
Revenue from Contracts with Customers
In May 2014, the FASB issued an accounting standards update that will eliminate the transaction-transaction and industry-specific revenue recognition guidance under current U.S. GAAP and replace it with a principles basedbased approach for determining revenue recognition. The revenue standard requires entities to apply the guidance retrospectively or recognize the cumulative effect of initially applying the guidance as an adjustment to the opening balance of retained earnings supplemented by additional disclosures. In July 2015, the FASB voted to defer the effective date of the revenue recognition standard by one year. We will beare required to adopt the new guidance retrospectively for annual and interim periods beginning January 1, 2017; early adoption2018.
Retail sales of electricity based on regulator-approved tariff rates represent TEP's primary source of revenue. While it is not permitted. Weexpected that tariff-based sales to regulated customers are evaluatingwithin the impact to our financial statementsscope of the new standard, this question is being reviewed by the AICPA Financial Reporting Executive Committee. TEP is in the process of assessing its performance obligations in its wholesale contracts and disclosures.identifying other contracts with customers.
Classification and Measurement of Financial Instruments
In August 2014,January 2016, the FASB issuedamended the guidance about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concernon the classification and provide related disclosures. Thismeasurement of financial instruments. Most notably, the new accounting standard update is effective for annual and interim periods beginning January 1, 2017; early adoption is permitted. TEP does not expectrequires the adoption of this guidance to have an impact on its disclosures.

following:

9287

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Concluded)

all equity investments in unconsolidated entities (other than those accounted for using the equity method of accounting) to be measured at fair value through earnings; however, entities will be able to elect to record equity investments without readily determinable fair values at cost, less impairment, and plus or minus subsequent adjustments for observable price changes; and
financial assets and financial liabilities to be presented separately in the notes to the financial statements, grouped by measurement category and form of financial asset.
TEP is required to adopt the new guidance for annual and interim periods beginning January 1, 2018. TEP is evaluating the impact to our financial statements and disclosures.

NOTE 13.14. QUARTERLY FINANCIAL DATA (UNAUDITED)
Our quarterly financial information is unaudited, but, in management’s opinion, includes all adjustments necessary for a fair presentation. Our utility business is seasonal in nature. Peak sales periods for TEP generally occur during the summer. Accordingly, comparisons among quarters of a year may not represent overall trends and changes in operations.
First Second Third FourthFirst Quarter Second Quarter Third Quarter Fourth Quarter
Thousands of Dollars
2014       
(in millions)

2015
Operating Revenue$255,513
 $321,618
 $387,411
 $305,359
$273
 $340
 $409
 $284
Operating Income31,999
 79,653
 84,898
 34,138
28
 74
 120
 36
Net Income9,172
 38,725
 39,644
 14,797
9
 38
 69
 12
2013       
       
(in millions)

2014
Operating Revenue$247,751
 $304,263
 $371,239
 $273,437
$256
 $322
 $387
 $305
Operating Income22,747
 53,433
 123,177
 31,014
32
 80
 85
 34
Net Income1,478
 30,787
 64,167
 4,910
9
 39
 40
 15


88

Schedule II—Valuation and Qualifying Accounts
Allowance for Doubtful Accounts (1)
 
Beginning
Balance
 
Additions-
Charged to
Income
 Deductions 
Ending
Balance
  Millions of Dollars
Year Ended December 31,        
2014 $5
 $2
 $2
 $5
2013 5
 2
 2
 5
2012 14
 3
 12
 5
Other Reserves (2)
 Beginning Balance Ending Balance
  Millions of Dollars
Year Ended December 31,    
2014 $4
 $5
2013 8
 4
2012 4
 8
(1)
TEP records additions to the Allowance for Doubtful Accounts based on historical experience and any specific customer collection issues identified. Deductions principally reflect amounts charged off as uncollectible, less amounts recovered. Amounts include reserves for trade receivables, wholesales sales, and in-kind transmission imbalances.
(2)
As the Other Reserves are not individually significant, additions and deductions need not be disclosed. Other reserves are made up of reserves for sales tax audits, litigation matters, and damages billable to third parties.


ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.

ITEM 9A. CONTROLS AND PROCEDURES
TEP’s Chief Executive Officer and Chief Financial Officer supervised and participated in TEP’s evaluation of its disclosure controls and procedures as such term is defined under Rule 13a – 15(e) or Rule 15d – 15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act), as of the end of the period covered by this report. Disclosure controls and procedures are controls and procedures designed to ensure that information required to be disclosed in TEP’s periodic reports filed or

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submitted under the Exchange Act, is recorded, processed, summarized, and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. These disclosure controls and procedures are also designed to ensure that information required to be disclosed by TEP in the reports that it files or submits under the Exchange Act is accumulated and communicated to management, including the principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. Based upon the evaluation performed, TEP’s Chief Executive Officer and Chief Financial Officer concluded that TEP’s disclosure controls and procedures are effective.
While TEP continually strives to improve its disclosure controls and procedures to enhance the quality of its financial reporting, there has been no change in TEP’s internal control over financial reporting during 20142015 that has materially affected, or is reasonably likely to materially affect, TEP’s internal control over financial reporting.

ITEM 9B. OTHER INFORMATION
None.


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PART III
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
Directors
All of the members of the TEP Board of Directors are executive officers and employees of TEP, a wholly owned subsidiary of UNS Energy.
The directors of TEP are elected annually by TEP's sole shareholder, UNS Energy, acting at the direction of the Board of Directors of UNS Energy.
The names and information concerning the members of the TEP Board of Directors are set forth below:
NameAgeServed As Director SinceBusiness Experience Age Served As Director Since Business Experience
David G. Hutchens482014
Mr. Hutchens has served as Chief Executive Officer of TEP since 2014; President of TEP since 2011; Executive Vice President of TEP in 2011; Vice President of TEP from 2007-2011. Mr. Hutchens joined TEP in 1995.
Mr. Hutchens' extensive experience in the electric and gas utility business and his position as President and Chief Executive Officer provide him with intimate knowledge of TEP's operations.
 49 2011 
Mr. Hutchens has served as Chief Executive Officer of TEP since 2014; President of TEP since 2011; Executive Vice President of TEP in 2011; Vice President of TEP from 2007-2011. Mr. Hutchens joined TEP in 1995.
Mr. Hutchens' extensive experience in the electric and gas utility business and his position as President and Chief Executive Officer provide him with intimate knowledge of TEP's operations and such experience contributes to the diverse knowledge, experience, skills and qualifications of the TEP Board.
Kevin P. Larson582014
Mr. Larson has served as Senior Vice President and Chief Financial Officer of TEP since September 2005. Mr. Larson joined TEP in 1985 and thereafter held various positions in its finance department and investment subsidiaries. He was elected Vice President in March 1997. In October 2000, he was elected Vice President and Chief Financial Officer. Mr. Larson is also a Chartered Financial Analyst.
Mr. Larson's extensive experience in the electric and gas utility business and his position as Senior Vice President and Chief Financial Officer provide him with intimate knowledge of TEP's financial affairs.
 59 2009 
Mr. Larson has served as Senior Vice President and Chief Financial Officer of TEP since September 2005. Mr. Larson joined TEP in 1985 and thereafter held various positions in its finance department and investment subsidiaries. He was elected Vice President in March 1997. In October 2000, he was elected Vice President and Chief Financial Officer. Mr. Larson is also a Chartered Financial Analyst.
Mr. Larson's extensive experience in the electric and gas utility business and his position as Senior Vice President and Chief Financial Officer provide him with intimate knowledge of TEP's financial affairs and such experience contributes to the diverse knowledge, experience, skills and qualifications of the TEP Board.
Philip J. Dion462014
Mr. Dion has served as Senior Vice President, Public Policy and Customer Solutions of TEP since August 2013. Mr. Dion was named Vice President, Public Policy in April 2010. Mr. Dion joined TEP in February 2008 as Vice President of Legal and Environmental Services. Mr. Dion previously held positions at the Federal Energy Regulatory Commission and the Arizona Corporation Commission.
Mr. Dion’s extensive experience in utility regulatory matters and his position as Senior Vice President of Public Policy and Customer Solutions provide him with intimate knowledge of TEP's regulatory affairs.
Todd. C. Hixon 49 2015 
Mr. Hixon has served as Vice President and General Counsel of TEP since May 2011. Mr. Hixon joined TEP’s legal department in 1998 and served in a variety of capacities, most recently serving as Associate General Counsel.
Mr. Hixon's extensive experience in utility legal and regulatory matters and his position as Vice President and General Counsel provide him with intimate knowledge of TEP's legal and regulatory affairs and such experience contributes to the diverse knowledge, experience, skills and qualifications of the TEP Board.

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Executive Officers
See Item 1. Business, Executive Officers, who are elected annually by TEP’s Board of Directors, acting at the direction of the Registrant.Board of Directors of UNS Energy, are as follows:
Name Age Position(s) Held 
Executive
Officer Since
David G. Hutchens 49
 President and Chief Executive Officer 2007
Kevin P. Larson 59
 Senior Vice President and Chief Financial Officer 1997
Kentton C. Grant 57
 Vice President and Treasurer 2007
Susan M. Gray 43
 Vice President, T&D Operations and Engineering 2015
Todd C. Hixon 49
 Vice President and General Counsel 2011
Karen G. Kissinger 61
 Vice President and Chief Compliance Officer 1991
Mark C. Mansfield 60
 Vice President, Energy Resources 2012
Frank P. Marino 51
 Vice President and Controller 2013
Thomas A. McKenna 67
 Vice President, Energy Delivery 2007
Catherine E. Ries 56
 Vice President, Customer and Human Resources 2007
Mary Jo Smith 58
 Vice President, Public Policy 2015
Herlinda H. Kennedy 54
 Corporate Secretary 2006

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David G. HutchensMr. Hutchens has served as Chief Executive Officer of TEP since 2014; President of TEP since 2011; Executive Vice President of TEP in 2011; Vice President of TEP from 2007-2011. Mr. Hutchens joined TEP in 1995.
Kevin P. LarsonMr. Larson has served as Senior Vice President and Chief Financial Officer of TEP since September 2005. Mr. Larson joined TEP in 1985 and thereafter held various positions in its finance department and investment subsidiaries. He was elected Vice President in March 1997. In October 2000, he was elected Vice President and Chief Financial Officer.
Kentton C. GrantMr. Grant was elected Treasurer in 2010 and has served as Vice President of TEP since January 2007. Mr. Grant joined TEP in 1995.
Susan GrayMs. Gray has served as Vice President of T&D Operations and Engineering since 2015. Ms. Gray joined TEP in 1994 as a student engineer, and has served in a variety of capacities since then, most recently serving as Senior Director of T&D.
Todd C. HixonMr. Hixon has served as Vice President and General Counsel of TEP since May 2011. Mr. Hixon joined TEP’s legal department in 1998 and served in a variety of capacities, most recently serving as Associate General Counsel.
Karen G. KissingerMs. Kissinger has served as Vice President and Chief Compliance Officer of TEP since August 2013. Ms. Kissinger served as Vice President, Controller, and Chief Compliance Officer from 2001 to 2013. Ms. Kissinger joined TEP as Vice President and Controller in January 1991.
Mark C. MansfieldMr. Mansfield has served as Vice President, Energy Resources since 2012. He joined the company in 2008 as Senior Director of Generation.
Frank P. MarinoMr. Marino has served as Vice President and Controller of TEP since August 2013. Mr. Marino joined TEP as Assistant Controller in January 2013. Prior to joining TEP, he served in various roles at the AES Corporation, a global power company. In 2012 he served as AES' Vice President for Business Demand and Outsourcing Management, and from 2007-2011 he served as Chief Financial Officer for two different business units.
Thomas A. McKennaMr. McKenna has served as Vice President, Energy Delivery since August 2013. Mr. McKenna was named Vice President, Engineering in January 2007. Mr. McKenna joined an affiliate of TEP in 1998. Mr. McKenna is retiring from TEP on May 1, 2016.
Catherine E. RiesMs. Ries has served as Vice President, Customer and Human Resources since August 2015. Prior to that she served as Vice President of Human Resources and Information Technology, since May 2011. Ms. Ries joined TEP as Vice President of Human Resources in June 2007.
Mary Jo SmithMs. Smith has served as Vice President of Public Policy since 2015. Ms. Smith joined TEP as Director of Investor Relations in 2003 and most recently served as Senior Director of Regulatory Services and Corporate Communications.
Herlinda H. KennedyMs. Kennedy has served as Corporate Secretary of TEP since September 2006. Ms. Kennedy joined TEP in 1980 and was named assistant Corporate Secretary in 1999.
Code of Ethics
SeePart I, Item 1. Business, SEC Reports Available on TEP's Website.
Audit and Risk Committee of the UNS Energy Board
The Audit and Risk Committee of the Board of Directors of UNS Energy was established for the purpose of overseeing the accounting and financial reporting process and audits of the financial statements of UNS Energy and its consolidated subsidiaries, including TEP.

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The Audit and Risk Committee reviews current and projected financial results of operations, selects an independent registered public accounting firm to audit UNS Energy’s and TEP’s financial statements annually, reviews and discusses the scope of such audit, receives and reviews the audit reports and recommendations and transmits its recommendations to the UNS Energy Board of Directors ofDirectors. The Audit and Risk Committee of UNS Energy reviews UNS Energy’s and TEP’s accounting and internal control procedures with the internal audit department from time to time, makes recommendations to the board of UNS Energy for any changes deemed necessary in such procedures and performs such other functions as delegated by the UNS Energy Board of Directors.
The following UNS Energy directors are members of the Audit and Risk Committee of UNS Energy’s Board of Directors:
Ramiro G. Peru, Chair
Robert A. Elliott

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James P. Laurito
Gregory A. Pivirotto
Joaquin Ruiz
All Audit and Risk Committee members possess the level of financial literacy and accounting or related financial management expertise required by New York Stock Exchange (NYSE) rules. UNS Energy’s Board of Directors has determined that, while each member of the Audit and Risk Committee has accounting and/or related financial management expertise, Mr. Ramiro Peru is an “audit committee financial expert” as that term is defined by applicable SEC regulations.
CompensationHuman Resources and Governance Committee of the UNS Energy Board
TEP is a wholly owned subsidiary of UNS Energy. As described in Part III, Item 11 Executive Compensation below, the TEP Board of Directors does not have a Compensation Committee and does not make compensation-related decisions for the executive officers of TEP. The same individuals serve as executive officers of both UNS Energy and TEP and, prior to the acquisition of UNS Energy by Fortis, the UNS Board of Directors Compensation Committee made compensation decisions for such officers, including the design of the 2014 executive compensation plan described in Item 11. Following the acquisition of UNS Energy by Fortis,Instead, the UNS Energy Board of Directors dissolved its Compensation Committee and established a separately standingDirectors' Human Resources and Governance Committee which has assumed many, but not all, of the responsibilities of the former Compensation Committee,makes compensation-related decisions, including the approval of the Compensation Discussion and Analysis (CD&A) set forthcompensation plan described in Part III, Item 11.11 Executive Compensation.
The following UNS Energy directors are members of the Human Resources and Governance Committee of UNS Energy’s Board of Directors:
Louise L. Francesconi, Chair
Lawrence J. Aldrich
Robert A. Elliott
Barry Perry
John C. Walker

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UNS Energy Directors
Due to the role of the Audit and Risk Committee and the Human Resources and Governance Committee of the UNS Energy Board of Directors described above, the following information is included with respect to the members of the UNS Energy Board of Directors (other than with respect to Mr. Hutchens, who is also a member of the Board of Directors of UNS Energy)
:
NameAgeServed as Director SinceBusiness Experience
Lawrence J. Aldrich622000
Chairman and Executive Director, Arizona Business Coalition on Health, since 2011; President and Chief Executive Officer of University Physicians Healthcare (UPH), a healthcare organization, from 2009 to 2010; Senior Vice President/Corporate Operations and General Counsel for UPH from 2007 to 2008; President of Aldrich Capital Company, an acquisition, management and consulting firm, since 2007; Chief Operating Officer of The Critical Path Institute, a non-profit medical research company focusing in drug development, from 2005 to 2007.
Mr. Aldrich’s extensive experience in the areas of public relations/advertising, finance, legal, human resources, marketing, engineering, operations, government/regulatory, information technology, insurance/health care, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Robert A. Elliott592003
President and owner of Elliott Accounting, an accounting, tax, management and investment advisory services firm, since 1983; Chair of AAA of Arizona, a regional automotive and travel club, since 2014 and Director since 2007; Director and Corporate Secretary of Southern Arizona Community Bank, a banking institution, from 1998 to 2010; Television Analyst/Pre-game Show Co-host for Fox Sports Arizona from 1998 to 2009; Chairman of the Board of the Tucson Airport Authority, an airport operator/manager, from January 2006 to January 2007; President and Chairman of the Board of the National Basketball Retired Players Association from 2011-2013; Director of University of Arizona Foundation, a philanthropic organization, since 2011.
Mr. Elliott’s extensive experience in the areas of accounting, audit, banking and corporate tax, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Louise L. Francesconi622008
President of Raytheon Missile Systems, a defense electronics corporation, from 1997 until her retirement in 2008; Director of Stryker Corporation, a medical technology company, since July 2006; Chairman of the Board of Trustees for TMC Healthcare, a hospital, since 1999; Director of Global Solar Energy, Inc., a manufacturer of solar panels and other solar-related products, from 2008 to 2011.
Ms. Francesconi’s extensive experience in the areas of accounting, public relations/advertising, finance, legal, human resources/benefits, marketing, engineering, operations, audit, government/regulatory, information technology and insurance/healthcare, and her significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
James P. Laurito582014
President and CEO of Central Hudson Gas & Electric Company since November 1, 2014. Mr. Laurito joined Central Hudson as President in November 2009. Prior to that, he served as President of both New York State Electric and Gas Corporation and Rochester Gas & Electric Corporation from 2003 until 2009.
Mr. Laurito's extensive experience in the electric and gas utility business contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Name Age Served as Director Since Business Experience
Lawrence J. Aldrich 63 2000 
Partner, Newport Board Group, since 2014; Chairman and Executive Director, Arizona Business Coalition on Health, since 2011; President and Chief Executive Officer of University Physicians Healthcare (UPH), a healthcare organization, from 2009 to 2010; Senior Vice President/Corporate Operations and General Counsel for UPH from 2007 to 2008; President of Aldrich Capital Company, an acquisition, management and consulting firm, since 2007; Chief Operating Officer of The Critical Path Institute, a non-profit medical research company focusing in drug development, from 2005 to 2007.
Mr.��Aldrich’s extensive experience in the areas of public relations/advertising, finance, legal, human resources, marketing, engineering, operations, government/regulatory, information technology, insurance/health care, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.

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Barry Perry502014
President and CEO of Fortis since December 31, 2014.
Prior to his current position at Fortis, Mr. Perry served as Vice President, Finance and CFO of Fortis since 2004. Mr. Perry joined the Fortis organization in 2000 as VP, Finance and CFO of Newfoundland Power. Previously, he held the position of VP, Treasurer with a global forest products company and Corporate Controller with a large crude oil refinery.
Mr. Perry's extensive experience in the electric and gas utility business contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Ramiro G. Peru582008
Executive Vice President and Chief Financial Officer of Swift Corporation, a trucking company, from June 2007 until his retirement in December 2007; Executive Vice President and Chief Financial Officer of Phelps Dodge Corporation, a mining corporation, from 2004 to 2007; Senior Vice President and Chief Financial Officer of Phelps Dodge Corporation from 1999 to 2004; Director of Anthem, Inc. (formerly WellPoint, Inc.), a health benefits company, since 2004; Board of Directors, Fiesta Bowl, since 2012; Director of SM Energy Company since 2014.
Mr. Peru’s extensive experience in the areas of accounting, corporate communications, finance, legal, human resource/benefits, audit, government/regulatory, corporate tax, information technology, insurance/health care and environmental contributes to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Gregory A. Pivirotto622008
President, Chief Executive Officer and Director of University Medical Center Corporation, in Tucson, from 1994 until his retirement in 2010; Adjunct Professor at the University of Arizona College of Law since 2013; certified public accountant since 1978; Director of Arizona Hospital & Healthcare Association, a trade association providing advocacy, education and service to hospitals and other healthcare organizations, from 1997 to 2005; Director of Tucson Airport Authority, an airport operator/manager, from 2008 to January 2014; Member of the Advisory Board of Harris Bank from 2010 to 2013. Director of the Arizona Donor Network Association from 1993 to 2006 and since 2012.
Mr. Pivirotto’s extensive experience in the areas of accounting, public relations/advertising, finance, legal, human resources/benefits, marketing, operations, audit, government/regulatory, banking, corporate tax, information technology and insurance/healthcare, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Joaquin Ruiz632005
Professor of Geosciences, University of Arizona, an educational institution, since 1983; Dean, College of Science, University of Arizona, since 2000; Executive Dean of the University of Arizona College of Letters, Arts and Science since 2009 and Vice President for Strategy and Innovation since 2012.
Mr. Ruiz’s extensive experience in the areas of renewables and environmental, public relations/advertising, human resources/benefits, operations, government/regulatory, information technology, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
John C. Walker572014
Executive Vice President, Western Canadian Operations of Fortis, effective August 1, 2014. His career with the Fortis Group spans more than 30 years. Mr. Walker was appointed President and CEO, FortisBC Electric in 2005 and in 2010 he also became President and CEO, FortisBC Gas and served in such position until August 2014. Prior to his leadership positions at FortisBC, he served as President and CEO, Fortis Properties from 1997 through 2005.
Mr. Walker's extensive experience in the electric and gas utility business contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.

Robert A. Elliott 60 2003 
President and owner of Elliott Accounting, an accounting, tax, management and investment advisory services firm, since 1983; Chair of AAA of Arizona, a regional automotive and travel club, since 2014 and Director since 2007; Director and Corporate Secretary of Southern Arizona Community Bank, a banking institution, from 1998 to 2010; Television Analyst/Pre-game Show Co-host for Fox Sports Arizona from 1998 to 2009; Chairman of the Board of the Tucson Airport Authority, an airport operator/manager, from January 2006 to January 2007; President and Chairman of the Board of the National Basketball Retired Players Association from 2011-2013; Director of University of Arizona Foundation, a philanthropic organization, since 2011.
Mr. Elliott’s extensive experience in the areas of accounting, audit, banking and corporate tax, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Louise L. Francesconi 63 2008 
President of Raytheon Missile Systems, a defense electronics corporation, from 1997 until her retirement in 2008; Director of Stryker Corporation, a medical technology company, since July 2006; Chairman of the Board of Trustees for TMC Healthcare, a hospital, since 1999; Director of Global Solar Energy, Inc., a manufacturer of solar panels and other solar-related products, from 2008 to 2011.
Ms. Francesconi’s extensive experience in the areas of accounting, public relations/advertising, finance, legal, human resources/benefits, marketing, engineering, operations, audit, government/regulatory, information technology and insurance/healthcare, and her significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
James P. Laurito 59 2014 
President and CEO of Central Hudson Gas & Electric Company since November 1, 2014. Mr. Laurito joined Central Hudson as President in November 2009. Prior to that, he served as President of both New York State Electric and Gas Corporation and Rochester Gas & Electric Corporation from 2003 until 2009.
Mr. Laurito's extensive experience in the electric and gas utility business contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Barry Perry 51 2014 
President and CEO of Fortis since December 31, 2014.
Prior to his current position at Fortis, Mr. Perry served as Vice President, Finance and CFO of Fortis since 2004. Mr. Perry joined the Fortis organization in 2000 as VP, Finance and CFO of Newfoundland Power. Previously, he held the position of VP, Treasurer with a global forest products company and Corporate Controller with a large crude oil refinery.
Mr. Perry's extensive experience in the electric and gas utility business contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Ramiro G. Peru 60 2008 
Executive Vice President and Chief Financial Officer of Phelps Dodge Corporation, a mining corporation, from 2004 until his retirement in 2007; Senior Vice President and Chief Financial Officer of Phelps Dodge Corporation from 1999 to 2004; Director of Anthem, Inc. (formerly WellPoint, Inc.), a health benefits company, since 2004; Board of Directors, Fiesta Bowl, since 2012; Director of SM Energy Company, 2014 - 2015.
Mr. Peru’s extensive experience in the areas of accounting, corporate communications, finance, legal, human resources/benefits, audit, government/regulatory, corporate tax, information technology, insurance/health care and environmental contributes to the diverse knowledge, skills and qualifications of the UNS Energy Board.

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Gregory A. Pivirotto 63 2008 
President, Chief Executive Officer and Director of University Medical Center Corporation, in Tucson, from 1994 until his retirement in 2010; Adjunct Professor at the University of Arizona College of Law since 2013; certified public accountant since 1978; Director of Arizona Hospital & Healthcare Association, a trade association providing advocacy, education and service to hospitals and other healthcare organizations, from 1997 to 2005; Director of Tucson Airport Authority, an airport operator/manager, from 2008 to January 2014; Member of the Advisory Board of Harris Bank Arizona from 2010 to 2013; Director of the Donor Network of Arizona from 1993 to 2006 and since 2012.
Mr. Pivirotto’s extensive experience in the areas of accounting, public relations/advertising, finance, legal, human resources/benefits, marketing, operations, audit, government/regulatory, banking, corporate tax, information technology and insurance/healthcare, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.
Joaquin Ruiz 64 2005 
Professor of Geosciences, University of Arizona, an educational institution, since 1983; Dean, College of Science, University of Arizona, since 2000; Executive Dean of the University of Arizona College of Letters, Arts and Science since 2009 and Vice President for Strategy and Innovation since 2012.
Mr. Ruiz’s extensive experience in the areas of renewables and environmental, public relations/advertising, human resources/benefits, operations, government/regulatory, information technology, and his significant community involvement in Arizona and Tucson contribute to the diverse knowledge, skills and qualifications of the UNS Energy Board.


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ITEM 11. EXECUTIVE COMPENSATION
COMPENSATION DISCUSSION AND ANALYSIS
This section describes TEP’s overall executive compensation policies and practices and specifically analyzes the total compensation for the following executive officers, referred to as the Named Executives:
Paul J. Bonavia, Board Chair and Chief Executive Officer*;
David G. Hutchens, President and Chief Executive Officer;
Kevin P. Larson, Senior Vice President and Chief Financial Officer;
Philip J. Dion, Senior Vice President, Public Policy and Customer Solutions;
Karen G. Kissinger, Vice President and Chief Compliance Officer; and
Todd C. Hixon, Vice President and General CounselCounsel; and
*Mr. Bonavia retired from his position as CEO of TEP on May 2, 2014,Kentton C. Grant, Vice President and his position as Board Chair of UNS Energy on September 19, 2014.Treasurer
COMPENSATION PHILOSOPHY
Compensation Committee
TEP is a wholly owned subsidiary of UNS Energy.Energy (itself a wholly owned, indirect subsidiary of Fortis). The TEP Board of Directors does not have a Compensation Committee and does not make compensation-related decisions for the executive officers of TEP. The same individuals serve as executive officers of both UNS Energy and TEP and, prior to the acquisition ofTEP. The UNS Energy by Fortis, the UNS Board of Directors CompensationHuman Resources and Governance Committee mademakes all compensation decisions for all such executive officers, including the design of the 20142015 executive compensation program, described herein. Following the acquisition of UNS Energy by Fortis, the UNS Energy Board of Directors dissolved the Compensation Committee and established a separately standing Human Resources and Governance Committee, which has assumed many, but not all, of the responsibilities of the former Compensation Committee, including the approval ofalso approves this disclosure. Because this Compensation Discussion and Analysis (CD&A) focuses on 2014 compensation, anydisclosure, among other responsibilities. Any references to a Compensation Committee in this section refer to the former UNS Energy Compensation Committee unless the UNS Energy Human Resources and Governance Committee is specifically identified.Committee.
TEP Compensation as a Component of UNS Energy Total Compensation
The Compensation Committee designs its programs to compensate UNS Energy executive officers for services to UNS Energy and all UNS Energy subsidiaries, including TEP. The amounts shown in this section represent the Named Executives' compensation allocated to TEP and its subsidiaries only, which, in 20142015 amounts to 80.46%80.90% of the Named Executives total compensation for service provided to UNS Energy and its subsidiaries. The percentage allocated to TEP is obtained using the Massachusetts formula, an industryindustry-wide accepted method of allocating common costs to affiliated entities based on an equal weighting of payroll costs, plant/tangible assets and total revenues. References to the Company refer to UNS Energy and include all UNS Energy subsidiaries. The Performance Enhancement Plan (PEP) includes target goals attributable to TEP, UNS Electric, and UNS Gas.
Objectives of the Compensation Program
The Compensation Committee has established a balanced total compensation program andthat ensures that a significant part of executive officer compensation is performance-based. Corporate goals are designed to focus executive officers and all non-union employees on successful execution of the Company’s strategy and annual operating plan.
The Company’s executive officer compensation policies and decisions have the following objectives:
1.Attracting, motivating and retaining highly-skilled executives;
2.Linking the payment of compensation to the achievement of critical short- and long-term financial and strategic objectives; providing safe, reliable and economically available electric and gas service; and aligning performance objectives of management with those of its other employees by using similar performance measures for both groups;

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3.Balancing risk and reward to align the interests of management with those of the Company’s stakeholders and encouraging management to think and act like owners, taking into account the interests of the public that the Company serves;
4.Maximizing the financial efficiency of the compensation program to avoid unnecessary tax, accounting and cash flow costs; and
5.Encouraging management to achieve outstanding results through appropriate means by delivering compensation in a manner consistent with established and emerging corporate governance “best practices."

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Summary of 20142015 Executive Officer Compensation Program
Compensation Component Key Features Purpose
Base Salary 
Increases considered on an annual basis to remain near the median of the Company's peer group (as described in ElementElements of Compensation - Base Salary, below)
Intended to constitute a sufficient component of total compensation to discourage inappropriate risk-taking
 Provide a fixed amount of cash compensation to the Company's Named Executives
Short-term Incentive
Compensation (Performance Enhancement Program or PEP)
 
Incentive plans are structured identically for executive and non-executive employees and across business units/functions, uniting all non-union employees in the achievement of common goals
All incentive plans are capped at 150% of target, protecting against the possibility that executives takewould try to maximize bonuses by taking short-term actions not supportive of long-term objectives to maximize bonusesobjectives.
Must achieve at least the threshold level of net income to receive payment above 50% of target for other performance measures; this cap limits non-financial goal payout if the financial goals are not met
 
Motivate and reward achieving or exceeding the Company's short-term performance goals, reinforcing pay-for-performance
Focus entire Company on key customer, operational and financial objectives
Long-Term Incentive
Compensation (LTI or equity-
based compensation)
 
LTI compensation is delivered in a combination of performance sharesshare units (PSUs) and restricted stockshare units (RSUs)
Ultimate value earned from the LTI program is based on both absolute and relative shareholder value and longer-term operating performance
Performance sharesPSUs represent 67% of the target award with 50% of the shares earned based on achievement of cumulative net income goals and 50% of the shares earned based on achievement of Fortis's TSR relative TSRto an industry peer group over a three-year period
RSUs represent 33% of the target awards, and cliff vest on the 3rd anniversary of grant
 
Opportunities for ownership and financial reward in support of the Company’s longer-term financial goals and stock price growth; also supports retention objective
Provide a link between compensation and long-term shareholder interests as reflected in changes in Fortis stock price
The Compensation Committee considers decisions regarding each component of pay in the context of each executive officer’s total compensation. For example, if the Compensation Committee increases an executive officer’s base salary, it also considers the resultant impact on short- and long-term performance-based incentive compensation and compares total compensation levels to competitive practice, seepractice. See Compensation Analysis, below. below. The Compensation Committee does not directly consider the value of previous equity awards in setting current year total compensation opportunities, but does review the value of outstanding equity awards to assess the degree to which such awards support the Company’s performance motivation, retention, and shareholder alignment objectives.
Each of these components is described in more detail below and in the narrative and footnotes to the supporting tables. The following sections highlight how the above objectives are reflected in the Company’s compensation program.

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Attracting, Retaining and Motivating Executives
To attract, retain and motivate highly-skilled employees, the Company provides the Named Executives with compensation packages that are competitive with those offered by other electric and gas utility companies of comparable size and complexity and/or electric and gas utility companies thought to be competitors for executives.

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The Compensation Committee generally targets total direct compensation for the Named Executives to be, on average, at the median of selected comparable companies identified below under the Compensation Analysis section. Under this approach, newly promoted executives and those new to their role may be placed below the median to reflect their limited experience and evolving skill set. Similarly, executives with longer tenure and therefore an above-market skill set, or those executives who are sustained high performers over time and are most critical to the Company’s long-term success, may be placed above the median. The Company believes that this strategy enables it to successfully hire, motivate and retain talented executives while ensuring a reasonable overall compensation cost structure relative to its peers.
In addition to providing competitive direct compensation opportunities, the Company also provides certain indirect compensation and benefits programs that are intended to assist in attracting and retaining high quality executives. These programs include pension and retirement programs and are described in more detail below and in the narratives that accompany the tables that follow this section.
Linking Compensation to Performance
The Company’s compensation program seeks to link the actual compensation earned by the Named Executives to their performance and that of the Company. Prior to the merger, UNS achieved this goal primarily through two elements of executive compensation: (i) short-term cash awardsCompany and (ii) equity-based compensation. After the merger, UNS did not use equity-based compensation in 2014.Fortis. To ensure that the executive officers are held accountable for achieving the Company’s financial, operational and strategic objectives and for creating Fortis shareholder value, the Company believes that the percentage of pay at risk should increase with the level of responsibility within the Company. The target amounts of performance-based pay programs comprise approximately 45% to 70% of the total direct compensation opportunity for the Named Executives. Of the performance-based compensation, approximately 30-50% is short-term and 50-70% is long-term. Placing a greater emphasis on long-term performance-based compensation encourages executive officers to focus on the long-term impact of their actions. Non-variable compensation, such as benefits and perquisites, is de-emphasized in the total compensation program to reinforce the linkage between compensation and performance.
Balancing Risk and Reward to Align the Interests of the Company’s Named Executives with Stakeholders
The Company's compensation program seeks to align the interests of the Named Executives with those of the Company’s key stakeholders, including Fortis shareholders, customers, the community and employees. The Company uses the short-term incentive compensation component to focus the Named Executives on the importance of providing safe and reliable customer service, creating a safe work environment for employees and improving financial performance by linking their short-term cash incentive compensation to achievement of these objectives. Prior to the Merger, theThe Company primarily relied on the equityuses an equity-based compensation elementcomponent of its compensation package to align the interests of the Named Executives with those of the former UNS EnergyFortis shareholders. The Company's compensation strategy was intended to mitigatemitigates risk by emphasizing long-term compensation and financial performance measures correlated with shareholder value. UNS Energy believedbelieves that equity-based compensation, together with the three-year vesting of stock-basedshare-based awards, and the stock ownership guidelines, result in compensation programs that diddo not encourage excessive risk-taking by management relating to the Company’s business and operations, and increase executive officer accountability in the performance of the Company. In addition, the Compensation Committee has the ability to reduce short-term incentive compensation award payouts, in its sole discretion, based upon factors other than Company performance measures. In considering the design alternatives, the Compensation Committee continually evaluates the potential for unintended consequences of its compensation program.
Maximizing the Financial Efficiency of the Program
In structuring the total compensation package for the Named Executives, the Compensation Committee evaluates the accounting cost, cash flow implications and tax deductibility of compensation to mitigate financial inefficiencies to the greatest extent possible. For instance, as part of this process, the Compensation Committee evaluates whether compensation costs are fixed or variable and places a heavier weighting on variable pay elements to calibrate expense with the achievement of operating performance objectives.

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Adhering to Corporate Governance “Best Practices”
The Compensation Committee continually seeks to evaluate the executive officer compensation program in light of corporate governance “best practices.” For example, the short-term and long-term incentive compensation programs include a clawback provision, and the Change in Control Agreements doesdo not contain an excise tax gross-up provision, all of which are discussed in more detail below.
The Compensation Committee also reviews tally sheets and wealth accumulation analysis,analyses, which are designed to assist the Compensation Committee in evaluating the reasonableness of the compensation provided to Named Executives. Based on this review, the Compensation Committee concluded that the current program design supports the Company’s objectives and that no changes were warranted to the program for 2014 compensation.

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Compensation Analysis
To provide a foundation for the executive officer compensation program, the Company periodically benchmarks its Named Executives’ compensation levels and practices against a peer group of companies intended to represent the Company's competitors for business and talent. The peer group, which is reviewed periodically and approved by the Compensation Committee, includes the 12 utility companies named below that are comparable to UNS Energy in size, as measured by annual revenues and market capitalization (the Peer Group). As of November 2013, the date when the most recent benchmarking analysis was performed, UNS Energy’s revenues and number of employees approximate the median of the Peer Group; total assets and market capitalization arewere between the 25th percentile and the median; net income is below the 25th percentile.
Frederic W. Cook & Co., Inc., the independent consultant retained by the Compensation Committee, supplements the benchmark information annually with information relating to general market trends, changes in regulatory requirements related to executive officer compensation and emerging “best practices” in corporate governance.
20142015 Peer Group
ALLETE, Inc.NorthWestern Corp.
Avista Corp.NV Energy, Inc.
Cleco Corp.PNM Resources Inc.
El Paso Electric Co.Portland General Electric Co.
Great Plains Energy, Inc.UIL Holdings Corp.
IDACORP Inc.Westar Energy Inc.
ELEMENTS OF COMPENSATION
Base Salary
The Company uses base salary to provide each Named Executive a set amount of money during the year with the expectation that he or she will perform his or her responsibilities to the best of his or her ability and in the best interests of the Company. The Company believes that competitive base salaries are necessary to attract and retain executive talentexecutives critical to achieving its business goals. In general, Named Executives’ base salaries are targeted to the median of the Peer Group described above. However, individual salaries can and do vary from the Peer Group median data based on such factors asas: (i) the competitive environment for Named Executives,Executives; and (ii) incumbent responsibilities, experience, skills and performance relative to similarly situated executive officers within the Company. Named Executives' salaries range from below the 25th percentile to the median of the Peer Group.Group at the time the last benchmarking review was conducted.
Increases to Named Executives’ base salaries are considered annually by the Compensation Committee. In approving base paysalary increases for Named Executives other than the CEO, the Compensation Committee also considers recommendations made by the CEO.CEO's recommendations.
In February 2014,2015, the Compensation Committee approved 3%2% base salary increases for the Named Executives, which were consistent with salary increases as a percent of salary for other non-union Company employees. Separately, the Compensation Committee approved a promotion for David Hutchens to President & CEO effective May 2, 2014, at which time his base salary was increased to $540,000 to address the added responsibility of CEO. Base salary as a percentage of total compensation for the Named Executives rangesranged from approximately 30-55%. of target total direct compensation. Additional information is provided in the Summary Compensation Table below.

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Short-Term Incentive Compensation (Cash Awards)
The Company's short-term incentive compensation consists of cash awards under the Performance Enhancement Plan (“PEP”), which links a significant portion of the Named Executives’ annual compensation to the Company’s annual financial and operational performance.
Each year, before the end of the first quarter, the Compensation Committee establishes performance objectives that must be met in whole or in part before the Company pays PEP awards. The key performance objectives are tailored to drive behavior that supports the Company’s strategy of delivering safe, reliable service and value to customers and a fair return to shareholders over time. The Compensation Committee generally attempts to align the target opportunity for each Named Executive, stated as a percentage of base salary, with the median rate for equivalent positions at the Peer Group companies. In 2014,2015, the target short -term incentive opportunity for the Named Executives ranged from 40% to 80% of base salary, depending upon the Named Executive’s responsibilities (i.e., the greater the responsibility, the more pay at risk). The Company's Named Executives’ target incentive opportunities as a percent of base salary arewere near the Peer Group median.median at the time the last benchmarking review was conducted. As described more fully below, the actual amounts paid depend on the achievement of specified performance objectives and could range from 50% of the target award upon achievement of threshold performance to 150.0%150% of the target award upon achievement of exceptional performance.

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Financial and Operating Performance Objectives-2014Objectives-2015
The PEP performance targets and weighting are based on factors that are essential for the long-term success of the Company and are identical to the performance objectives used in its performance plan for other non-union employees. In 2014,2015, the objectives werewere: (i) net income; (ii) O&M cost containment; and (iii) excellent operations and safe work environment, which include both quantitative and qualitative measures.environment. The Compensation Committee selected the goals and individual weightings for the 20142015 PEP to ensure an appropriate focus on profitable growth and expense control, as well as operational and customer service excellence, process improvements,excellence. This use of balanced financial and establishing new rates. This balanced scorecard approachoperational metrics encourages all employees to work toward common goals that are in the interests of UNS Energy’s various stakeholders.
The program design includes a 50% maximum payment cap if the Net Income goal does not achieve at least Threshold attainment. This ensures sufficient income to fund the program and reiterates the importance of the Net Income Goal. Finally, the Board of Directors has discretion to adjust any payout.
The financial and other metrics for the Company’s 20142015 Short-Term Incentive Compensation program were:
Financial – 50%60%, Comprising of:
Net Income – 40%
O&M Cost Containment – 10%
Net Income – 40%
O&M Cost Containment – 20%
Excellent Operations and Safe Work Environment – 50%40%
In developing the PEP performance targets, Company management compiles relevant data such as Company historic performance and industry benchmarks and makes recommendations to the Compensation Committee for a particular year, but the Compensation Committee ultimately determines the performance objectives that are adopted.
The 20142015 financial performance objectives were:
Performance Objectives Threshold Target Exceptional
  Millions of Dollars
Net Income $133.5
 $141.9
 $150.3
O&M Costs 279.0
 274.0
 269.0
 Threshold Target Exceptional
Net Income (in millions) results interpolated
$139.6
 $150.1
 $160.6
O&M Long-Term Increase final results interpolated
3.0% 2.0% 1.5%

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The 20142015 operational and safety performance objectives were:
 Threshold Target ExceptionalThreshold Target Exceptional
Excellent Operations  
Equivalent Availability Factor (“EAF”) Generation Reliability – Summer 91.0% 91.1% - 92.0% 92.1% +92.43% 93.42% ≥94.42%
System Average Interruption Duration Index (“SAIDI”) Transmission/Distribution Reliability 81-95 60-80 < 6078-90 57-77 < 57
Customer Satisfaction - Improve Residential Customer Satisfaction Score Measured by JD Powers 635 656 ≥665
Generation Mix - Diversify Fuel Mix SGS Unit 1 SGS Unit 1 & Combined Cycle Asset SGS Unit 1, Combined Cycle Asset and a 3-year firm wholesale sale with a third party or complete long-term firm wholesale sale to a third party, revised hedging plan
Customer Satisfaction - Improve Residential Customer Satisfaction Score Measured by JD Power640 - 649 650 - 669 ≥670
Safe Work Environment  
OSHA Rate (Employee Safety Measure) 1.90 and Safety Process Analysis (SPA) complete 1.50 and SPA and 80% Process Improvement Goals < 1.1 and SPA and 90% Process Improvement Goals
OSHA Rate (Employee Safety Incident Rate)1.70 1.50 < 1.00
20142015 PEP Results
Effect of the Merger on 2014 PEP:
The Merger agreement called for PEP to be paid 30 days from the date of the closing of the Merger, in a manner consistent with past practices. Since the PEP program is based on annual goals, we used a combination of actual results as of the merger date and forecasted performance for the rest of the year where needed in an effort to establish a fair and consistent manner of reviewing goal attainment.
Summary:
Overall, the 2014 combined actual and forecasted2015 results produced a total weighted performance for all goals of 108.7%113.2% of target performance, as summarized in Table A below. The Compensation Committee approved an overall PEP payout of 108.7%113.2% of target awards for all participants. Individual performance was not factored into any individual payouts in 2014 given the timeline requiring distribution of PEP awards within 30 days of the Merger.awards.

The actual final 2014 year-end PEP results would have calculated to a total payout of 118.7% under the program. Three goals contributed to the difference between the results forecasted in August 2014 for PEP payments made in September 2014 and the actual final year-end results: 1) UNS Energy's 2014 Net Income was significantly higher than the August forecast; 2) the reliability measure SAIDI performed at a year-end "Exceptional" level rather than the forecasted "Target" performance; and 3) the safety incident rate was higher than forecasted at year-end resulting in a final outcome of "Threshold" rather than "Target" performance.
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Table A: Summary of 20142015 PEP Results
Goal 
Weighting of
Goal (A)
 
Percentage of
Target Performance
Achieved (B) (1)
 
Payout Percentage
(A x B)
Weighting of
Goal (A)
 
Percentage of
Target Performance
Achieved (B) (1)
 
Payout Percentage
(A x B)
Net Income 40% 100% 40.0%40% 108% 43.2%
Safe Work Environment 5% 100% 5.0%10% 50% 5.0%
O&M Cost Containment 10.0% 112% 11.2%20% 150% 30.0%
Excellent Operations 45.0% Various 52.50%30% Various 35.0%
 100% 108.7%100% 113.2%
(1) 
Additional details provided below.

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Net Income Goal:
In 2014,2015, the Company projected $141.9achieved $151.8 million of net income, which was above target performance. The calculation, per the Merger Agreement, was based on net income excluding any merger-related costs.performance (results are interpolated). Table B, below, reflects the net income goal, which ranged from $133.5$139.6 million (threshold) to $150.3$160.6 million (exceptional), and the corresponding payout levels, which ranged from 50% to 150% of the target award, as well as the actual net income achieved for 2014.2015. Net income must have been more than $133.5$139.6 million to produce a payout. The anticipated achievement of $141.9$151.8 million in net income resulted in a payout level of 100%108.1% of the target amount for thatthe Net Income performance objective. Achievement was calculated on actual results from January to June 2014, plus forecasted results from July to December 2014.
Table B: Net Income
 Final Result: $141.9
 Range (Millions of Dollars)
 $134$135$137$139$140$142$144$145$147$149$150
Payout % of Target50%60%70%80%90%100%110%120%130%140%150%
 á    á    á
 Threshold   Target   Exceptional
 Final Result: $151.8
(in millions)Range
 $139.6$141.7$143.8$145.9$148.0$150.1$152.2$154.3$156.4$158.5$160.6
Payout % of Target50%60%70%80%90%100%110%120%130%140%150%
 á    á    á
 Threshold   Target   Exceptional
     Actual $151.8    
O&M Cost Containment Goal:
The Company projected anPrior to 2015, the O&M cost containment goal focused on achieving a targeted current year O&M spending level for 2014level. In 2015 the goal was changed to reflect a longer term view of $272.8 million. For this goal,O&M by focusing on results of the 2016 budget (set by management in mid-year 2015) as a percentage increase over the 2015 base O&M budget. The lower spendingincrease of year over year budget estimates represents better performance. This O&M spending, for purposesgoal is meant to trigger longer-term thinking on how the Company's leadership might structurally change its business and processes, using proven process improvement methods, to focus on moving the business forward while containing costs. In 2016, the program design will include a monitoring of a PEP calculation, is defined asperformance to the sum of O&M expenses for TEP and UES operations, excluding (1) any reimbursable items for O&M costs incurred by TEP for operating Units 3 and 4 at the Springerville Generating Station; (2) reimbursable O&M expenses for renewable and demand side management programs; (3) any PEP accrued expense; and (4) any merger-related costs. TEP operates Unit 3 for Tri-State, which leases the unit from financial owners, and Unit 4, which is owned by Salt River Project Agricultural Improvement and Power District. Achievement was calculated on actual results from January to June 2014, plus forecasted results from July to December 2014.established 2016 budget. Table C, below, reflects the O&M cost containment goal, which ranged from $279 million3.0% increase (threshold) to $269 million1.5% increase (exceptional), and the corresponding payout levels, which ranged from 50% to 150% of the target award as well as(results are interpolated). In 2015 the anticipatedCompany achieved a 2016 O&M spending level achieved for 2014. The achievementbudget decrease of O&M spending of $272.8 million0.5%, which was less than the threshold amount of $279 million, whichexceptional performance, and resulted in a payout level of 112.0%.150% for that performance objective.
Table C: O & M Cost ContainmentLong Term Increase
 Final Result: $272.8
 Range (Millions of Dollars)
 $279$278$277$276$275$274$273$272$271$270$269
Payout % of Target50%60%70%80%90%100%110%120%130%140%150%
 á    á    á
 Threshold   Target   Exceptional
 Final Result: 1.5%
(in millions)Range
 3.0%2.8%2.6%2.4%2.2%2.0%1.9%1.8%1.7%1.6%1.5%
Payout % of Target50%60%70%80%90%100%110%120%130%140%150%
 á    á    á
 Threshold   Target   Exceptional
          Actual (0.5)%
Excellent Operations Goals:
Equivalent Availability Factor (“EAF”): The reliability of the Company's plant performance during the peak summer demand season is critical to its customers and due to approved rate design, to financial performance; therefore, a Summer EAF goal is used in measuring the reliability of the Company's coal generation fleet.

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System Average Interruption Duration Index (“SAIDI”): This reliability measure in the Company's Transmission and Distribution business area is a good outage duration performance measure, asbecause it tracks the length or duration of outages across all customers, giving the Company a focus on reducing the outage time a customer experiences. UNS Energy generally compares well to industry ranges given by the EEI. Achievement was calculated on actual results from January to July 2014, plus forecasted results based on five years of historical trends from August to December 2014.
Customer Satisfaction: In 2014,This reliability metric is measured by the Company introduced a newJD Power Customer Satisfaction goal, measured by our JD Power performance. A concentration on improving oursurvey. Improving the Company's interactions with our customers wasis critical to the outcome of this goal. Focus areas included call center response time, customer communication improvements, and a new outage map. Achievement of this goal was based on the first two 2014 quarter results, which was all that was available at the time of calculation.

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Generation Mix: The Company has had a strong focus on executing the strategy around our generation fleet as we divest of coal and optimize our generation resources. The goal concentrated on wholesale sales and the successful acquisition of a new power plant. Achievement of this goal was based on a status update of three separate transactions all contributing to the success of this goal.
Safe Work Environment Goal:
Safety: The Company's safety measure tracks the OSHA Recordable Incident Rate, which is a good indicator of a company’s safety efforts. Continued focus on safety initiative components (leadership, employee involvement, and regulatory compliance) is a priority for the Company. Historically the Company has continued to improve its safety record. Achievement was calculated on actual results from January to July 2014, plus forecasted results based on five years of historical trends from August to December 2014.
Table D, below, reflects the final achievement at the various levels of performance for the Excellent Operations and Safe Work Environment goals. According to the guidelines set by the Compensation Committee, the achievement of these goals yielded a result of 57.5%40% for this combination of performance objectives.
Table D: Excellent Operations/Safe Work Environment Goals
 Weight Actual Result Final Value TotalsWeight Actual Result Final Value Totals
Excellent Operations (45.0% Weighting)
 
Excellent Operations (30% Weighting)
 
Equivalent Availability Factor (“EAF”) Generation Reliability – Summer 7.50% Below Threshold —% 10% Exceptional 15% 
System Average Interruption Duration Index (“SAIDI”) Transmission/Distribution Reliability 7.50% Target 7.50% 10% Target 10% 
Customer Satisfaction - Improve Residential Customer Satisfaction Score Measured by JD Powers 15.00% Exceptional 22.50% 
Generation Mix - Diversify Fuel Mix 15.00% Exceptional 22.50% 
Customer Satisfaction - Improve Residential Customer Satisfaction Score Measured by JD Power10% Target 10% 
Subtotal: Excellent Operations 52.50% 35.0%
Safe Work Environment (5.0% Weighting)
 
Safe Work Environment (10% Weighting)
 
OSHA Rate (Employee Safety Measure) 5.00% Target 5.00% 10% Threshold 5% 
Subtotal: Safe Work Environment 5.00% 5.0%
Total Percentage for Excellent Operations and Safe Work Environment 57.50% 40.0%
The Company’s internal audit department verified that the reported results for the 20142015 PEP goals were accurate and reported its findings to the Compensation Committee at the time of the Merger.Committee.
The amounts of the 20142015 PEP awards paid to each of the Named Executives are listed in the Summary Compensation Table below.
Long-Term Incentive Compensation (Equity Based Awards)
Prior to the Merger, UNS Energy believedbelieves that equityequity-based awards in tandem withalign the Company’s executive officer stock ownership guidelines discussed below, encouraged ownershipinterests of UNS Energy stock by executive officers and held executive officers accountable for the long-term impact of their actions, which in turn aligned the interest of those executive officers with the interestinterests of UNS Energy’s shareholders.Fortis’ shareholders and fosters the growth and success of the business of the Company and Fortis in accordance with the vision of both the Company and Fortis. In addition, the vesting provisions applicable to the awards encouragedencourages a focus on long-term operating performance, linking compensation expense to the achievement of multi-year financial results and helping to retain executive officers.
In 2015, the Compensation Committee approved the adoption of a new long-term incentive plan under which certain key employees, including executive officers, may be granted long-term incentive awards of performance-based share units ("PSUs") and time-based restricted share units ("RSUs"). Executive officers receive a cash payment for each PSU and RSU that is payable and vested pursuant to the plan. The payment is based on the market price of one share of common stock of Fortis on the applicable payment or vesting date, which is then converted to U.S. dollars in accordance with the plan. All prior long-term incentive awards that predate the current plan were paid out in 2014 as a result of the acquisition of UNS by Fortis.
The long-term incentive (“LTI”) opportunity for each Named Executive is based on a percentage of salary. The 20142015 LTI multiples are 125%150% for Mr. Hutchens, 100% for Mr. Larson, 125% for Mr. Dion,and 40% for Ms. Kissinger and 40% for Mr. Hixon. Mr. Dion's 2014 LTI opportunity reflects his contribution to TEP's 2013 rate caseMessrs. Hixon and will return to its regular percentage in 2015.Grant. The 2014 LTI multiple was 150% of base salary for Mr. Bonavia, who retired from his position as CEO of TEP on May 2, 2014. Thedollar values of the Named Executives’ long-term incentives as a dollar value, are generally in the 25th percentile to median range of the Peer Group. Under the design of the compensation plan for 2014,2015, two-thirds of the award opportunity was granted as performance

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share units and one-third was to be granted as performance shares and one-third was granted as restricted stockshare units that vest 100% on the third anniversary of grant to support retention objectives as well as succession planning initiatives. Pursuant to the terms of the Merger agreement, the outstanding 2012, 2013, and 2014 LTI awards were canceled in exchange for cash payments to each of the Named Executives at the time of the merger.

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20142015 Performance SharesShare Units
If the Merger had not occurred, performancePerformance share unit awards granted in 2014 were to2015 will be distributed, along with dividend equivalents (to the extent that the performance sharesshare units become earned and vested), at the end of the three-year performancepayment criteria period ending in 2016,2017, based on the following equally-weighted performance targets:payment criteria:
TSR Payment Criteria
The first financial performance criteria is the TSR Performance Criteriaof Fortis stock relative to the TSR of a predefined peer group (the "LTI Peer Group") shown below for the same period.
TSR Percentile Rank
Payout as a Percent of
Target Award
75th percentile and above
75.0%
62.5th percentile
62.5%
50th percentile
50.0%
42.5th percentile
37.5%
3530th percentile
25.0%
Below 3530th percentile
0.0%
Intermediate payouts determined by interpolation.
LTI Peer Group
AGL ResourcesNiSource Inc.
Alliant EnergyNortheast Utilities
Ameren Corp.OGE Energy Corp.
Atmos Energy Corp.Pinnacle West Capital Corp.
Canadian Utilities, Ltd.PPL Corp.
CenterPoint Energy, Inc.Public Svc Enterprise Group
CMS Energy Corp.SCANA Corp.
DTE Energy Co.Sempra Energy
Emera, Inc.TECO Energy Inc.
Great Plains EnergyUGI Corp.
LTI Peer GroupWestar Energy, Inc.
MDU Resources Group Inc.Wisconsin Energy Corp.
New Jersey Resources, Corp.Xcel Energy Inc.
Cumulative Net Income PerformancePayment Criteria
The second financial payment criteria is cumulative net income (CNI) determined in accordance with GAAP and compared to a target cumulative net income of UNS Energy based on an assessment of external and management forecasts for the same period.
Degree of Performance Attainment
Three-Year Cumulative
Net Income
 
Payout as a Percent of Target
Award Earned
Millions of Dollars  
Outstanding$531
 75.0%
Degree of Performance Attainment (in millions)
Three-Year Cumulative
Net Income
 
Payout as a Percent of Target
Award Earned
Exceptional$527
 75.0%
Target462
 50.0%457
 50.0%
Threshold393
 17.5%387
 25.0%
Less than Threshold< 393
 0.0%< 387
 0.0%
Intermediate payouts determined by interpolation.
Equity Grant Timing and Practice
Generally, duringDuring the first quarter following the close of a fiscal year, prior to the Merger, the Compensation Committee approvedapproves and grantedgrants the long-term incentive awards for that year, including the type of equity to be granted, as well as the size of the awards for Named

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Executives. In determining the type and aggregate size of awards to be provided, as well as the performance metrics that would apply, the Compensation Committee consideredconsiders the strategic goals of the Company and Fortis, trends in corporate governance, accounting impact, tax deductibility, cash flow considerations, and the impact on Fortis's earnings per share and the number of shares that would be required to be allocated for the award and the resulting impact to shareholders.share. The timing of awards was not coordinated with the release of material non-public information.
CLAWBACK PROVISION FOR VARIABLE COMPENSATION
Consistent with current “best practices,” all short- and long-term incentive compensation awards approved after 2009 are subject to a clawback provision.provisions. The clawback provision may apply to the income derived from the financial component of the PEP and the performance sharesshare units in the event of a restatement of financial results that, in the view of the Compensation Committee, results from intentional misconductfraud or intentional error.misconduct. The Compensation Committee has discretion to determine to whom the clawback will apply and the amount subject to clawback, if such repayment is determined to be necessary.
ELEMENTS OF POST EMPLOYMENT COMPENSATION
Termination and Change in Control
ThePrior to the Company's acquisition by Fortis, the Compensation Committee had determined that it iswas in the Company’s and shareholders’ best interest to enter into change in control agreements with its executive officers in order to attract highly qualified executives and to retain those executives through any future challenges that might arise. All of these agreements were designed to be consistent with contemporary “best practices,” such as double trigger severance payments and equity vesting and no excise tax gross-ups. These various agreements are still in effect and the effects of the Merger are discussed in detail in Potential Payments Upon Termination or Change in Control, below.

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Generally speaking, the Company does not enter into or extend employment agreements with current officers and instead only uses employment agreements when needed in recruiting a new officer. The Company currently has no employment agreements in place.
UNS Energy also maintains a severance pay plan for all of the Company’s non-union employees, including its Named Executives, which continues the Company’s historical practice of providing severance pay in certain termination situations without a change in control and provides consistency in that practice.
Retirement and Other Benefits
The Company offers retirement and other core benefits to its employees, including the Named Executives, in order to provide them with a reasonable level of financial support in the event of illness or injury and to enhance productivity and job satisfaction. The basic retirement and other core benefits are the same for all employees and Named Executives and include medical and dental coverage, disability insurance and life insurance. In addition, the Tucson Electric Power CompanyTEP 401(k) Plan (the “401(k) Plan”) and the Tucson Electric Power CompanyTEP Salaried Employees Retirement Plan (the “Retirement Plan”) provide a reasonable level of retirement income reflecting employees’ careers with the Company. All employees, including Named Executives, participate in these plans; the cost of these benefits (other than the Retirement Plan) is partially borne by the employee, including each Named Executive. In addition, the Company provides all of its officers with an optional executive physical annually.
ToIn addition to the basic retirement plans, described above, to the extent that any executive officer’s retirement benefit exceeds Internal Revenue Code (Code) limits for amounts that can be paid through a qualified plan, the Company also offers non-qualified retirement plans, including the Tucson Electric Power CompanyTEP Excess Benefit Plan (Excess Benefit Plan) and the Management and Directors Deferred Compensation Plan (DCP). These plans provide only the difference between the calculated benefits and Code limits. These benefits are not tied to any formal individual or Company performance criteria but are intended to enhance the attraction and retention value of the executive officer compensation program and are consistent with similar competitive compensation benefits made available to executives in the industry. UNS Energy believes the DCP and the Excess Benefit Plan assist with the Company’s attraction and retention objectives. The DCP provides an industry-competitive and tax-efficient benefit to the executive officers. The DCP is not funded by the Company, andCompany; DCP participants have anare unsecured contractual commitment bycreditors of the Company with respect to pay amounts owed under the DCP.their DCP plan accounts. The Excess Benefit Plan provides the retirement benefits to executive officers that would have been provided under the Retirement Plan if the Code limitations did not apply. For more information on retirement and certain related benefits, see the discussion in Pension Benefits and Non-Qualified Deferred Compensation, below.
ROLE OF EXECUTIVES IN ESTABLISHING COMPENSATION
Certain executive officers, including the CEO, the CFO, the General Counsel and the Vice President of Customer and Human Resources, and Information Technology, routinely attend regular sessions of Compensation Committee meetings; however, they are excused for executive sessions when their compensation is discussed and/or determined. The CEO makes recommendations to the Compensation Committee with respect to changes in compensation for senior executive officer positions (other than the CEO) and payouts

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under the annual incentive plan. The CEO also makes suggestions to the Compensation Committee regarding the design of incentive plans and other programs in which senior management participates.
The CFO provides information regarding short-term and long-term compensation targets, as well as updates on the progress of short- and long-term objectives. Additional Company personnel with expertise in and responsibility for compensation and benefits provide information regarding executive officer and director compensation, including cash compensation, equity awards, pensions, deferred compensation and other related information.
COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION
The Human Resources and GovernanceCompensation Committee has reviewed and discussed with management the Compensation Discussion and Analysis section required by Item 402(b) of SEC Regulation S-K and contained in this annual report. Based on such review and discussions, the Human Resources and GovernanceCompensation Committee recommended to the Board of Directors of TEP that the Compensation Discussion and Analysis section be included in TEP’s annual report on Form 10-K for the year endingended December 31, 2014.2015.

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Respectfully submitted,
 
THE HUMAN RESOURCES AND GOVERNANCE COMMITTEE OF UNS ENERGY CORPORATION
 
Louise L. Francesconi, Chair
Lawrence J. Aldrich
Robert A. Elliott
Barry Perry
John C. Walker


109105



SUMMARY COMPENSATION TABLE – 20142015 (1) 
The following table sets forth summary compensation information for the years ended December 31, 2012; December 31, 2013;2013, 2014, and December 31, 20142015 for the Company’s Named Executives. Note that the column titled All Other Compensation includes for 2014 amounts received by the Named Executives for cancellation of all outstanding equity awards, including awards that were previously disclosed in the Summary Compensation Table in prior years, to the extent those awards represent compensation for services to TEP and its subsidiaries.Executives:
Name and Principal Position Year Salary 
Stock Awards (4)
 
Non-Equity Incentive Plan Compensation (5)
 
Change in Pension Value and Non-Qualified Deferred Compensation Earnings (6)
 
All Other Compensation (2)
 Total
Paul J. Bonavia
Former Board Chair and Chief Executive Officer (7)
 2014 $446,870
 $790,257
 $465,729
 $261,168
 $5,474,229
 $7,438,253
 2013 512,726
 904,888
 417,196
 165,574
 13,948
 2,014,331
 2012 498,557
 933,643
 377,372
 228,697
 13,408
 2,051,677
David G. Hutchens
President and Chief Executive Officer (3)
 2014 397,962
 417,359
 377,827
 555,358
 2,529,306
 4,277,812
 2013 306,482
 432,998
 198,513
 105,379
 14,209
 1,057,580
 2012 286,116
 446,431
 135,356
 331,559
 13,288
 1,212,750
Kevin P. Larson
Senior Vice President, Chief Financial Officer
 2014 289,922
 286,845
 158,639
 259,605
 4,122,921
 5,117,932
 2013 279,435
 327,989
 142,107
 46,725
 12,574
 808,831
 2012 271,713
 339,116
 128,542
 382,204
 12,226
 1,133,802
Philip J. Dion
Senior Vice President, Public Policy and Customer Solutions
 2014 236,367
 292,582
 129,615
 100,651
 662,457
 1,421,672
 2013 199,218
 70,005
 114,992
 16,221
 9,363
 409,799
Karen G. Kissinger
Vice President and Chief Compliance Officer
 2014 219,094
 86,054
 95,088
 325,958
 2,272,033
 2,998,227
 2013 216,627
 252,798
 107,659
 
 10,147
 587,230
 2012 213,880
 266,857
 80,946
 270,224
 10,019
 841,927
Todd C. Hixon
Vice President and General Counsel
 2014 226,742
 86,054
 96,072
 242,704
 460,900
 1,112,472
Name and Principal PositionYear Salary 
Share Awards(2)
 
Non-Equity Incentive Plan Compensation(3)
 
Change in Pension Value and Non-Qualified Deferred Compensation Earnings(4)
 
All Other Compensation(5)(6)
 Total
David G. Hutchens
President and Chief Executive Officer
2015 446,942
 632,590
 432,815
 393,142
 9,647
 1,915,136
2014 397,962
 417,359
 377,827
 555,358
 2,529,306
 4,277,812
2013 306,482
 432,998
 198,513
 105,379
 14,209
 1,057,580
Kevin P. Larson
Senior Vice President and Chief Financial Officer
2015 297,995
 280,509
 169,081
 
 9,647
 757,232
2014 289,922
 286,845
 158,639
 259,605
 4,122,921
 5,117,932
2013 279,435
 327,989
 142,107
 46,725
 12,574
 808,831
Todd C. Hixon
Vice President and General Counsel
2015 231,135
 85,736
 111,642
 32,676
 9,647
 470,836
2014 226,742
 86,054
 96,072
 242,704
 460,900
 1,112,472
Karen G. Kissinger
Vice President and Chief
Compliance Officer
2015 221,580
 83,223
 100,316
 36,250
 9,647
 451,016
2014 219,094
 86,054
 95,088
 325,958
 2,272,033
 2,998,227
2013 216,627
 252,798
 107,659
 
 10,147
 587,230
Kentton C. Grant
Vice President and
Treasurer
2015 212,349
 78,884
 100,316
 87,403
 7,645
 486,597
(1) 
The amounts included in the Summary Compensation Table represent only the amounts paid by UNS for services to TEP and its subsidiaries and do not include amounts paid by UNS for services to others. For 2015 services, 80.90% of the amounts paid by UNS were allocable to services to TEP and its subsidiaries. For 2014 services, 80.46% of the amounts paid by UNS were allocable to services to TEP and its subsidiaries. For 2013 services, 79.7% of the amounts paid by UNS were allocable to services to TEP and its subsidiaries. For 2012 services, 78.9% of the amounts paid by UNS were allocable to services to TEP and its subsidiaries.
(2) 
The amounts included in the All Other CompensationShare Awards column reflect 80.90% of the grant date fair value calculated in accordance with FASB ASC Topic 718 for restricted share units and performance share units granted in each of the years reported, excluding the effect of forfeitures. Half of the performance share unit awards had a grant date fair value, based on a Monte Carlo simulation, of $36.28 per share. These awards are composed primarily of payments in exchange for stock awards canceled in connection with the Merger,based on Fortis's Shareholder Return relative to the extent those awards represent compensation for services to TEP and its subsidiaries. ExceptPeer Group TSR for the 2014 awards disclosedthree year performance period ended December 31, 2017. The remaining half had a grant date fair value, based on the grant date closing price, of $33.47 per share based on cumulative net income for the performance period ended December 31, 2017. The restricted share units had a grant date fair value, based on the grant date closing price, of $33.47 per share. The share prices listed in this footnote are converted from Canadian Dollars (CAD) based on the Wall Street Journal currency exchange rate on the grant date (12/31/14) as required in the Stock Awards column, above, allShare Unit Plan document which was 1.1621. The restricted share units vest on the third anniversary of grant over the awards for which amounts were paid were previously disclosed investing period. In the Summary Compensation Table in prior years, and were also disclosed in the table showing Outstanding Equity Awards at Fiscal Year End. Except for the portion allocable to the 2014 awards, shown above, nonecase of performance share units, the amounts in thisthe column arereflect the grant date fair value assuming the probable outcome of the performance conditions. The 2015 amounts attributable to awards not previously disclosed.Restricted Share Units and Performance Share Units are shown on the following table:
 Restricted Share Units Performance Share Units Total
David G. Hutchens224,979
 407,611
 632,590
Kevin P. Larson99,762
 180,747
 280,509
Todd C. Hixon30,492
 55,244
 85,736
Karen G. Kissinger29,598
 53,625
 83,223
Kentton C. Grant28,055
 50,829
 78,884

The amounts inFor the All Other Compensation column also include Qualified 401 (k) Plan and Non-Qualified Plan Matching Contributions, and also include charitable gifts made on behalf of some Named Executives to a charity of the Named Executive’s choice. These amounts are reported in the year in which the Company committed to the contribution, even though the amount may not have been actually paid until a later year.
Finally, the amounts in the All Other Compensation column include additional payments that Messrs. Larson and Hixon received in 2014. Mr. Larson received a retention bonus in connection with the Merger and as consideration for amending his Change in Control Agreement, as explained in more detail in the section Potential Payments Upon Termination or Change in Control, below. Mr. Hixon received a bonus for his work in connection with the Merger.

110



Mr. Bonavia’s total listed in the All Other Compensation column for 2014 included payments in exchange for stock awards canceled in connection with the Merger totaling $5,460,148, qualified plan 401(k) matching contributions of $9,414 and non-qualified plan 401(k) matching contributions of $4,667.
Mr. Hutchens’ total listed in the All Other Compensation column for 2014 included payments in exchange for stock awards canceled in connection with the Merger totaling $2,515,225, qualified plan 401(k) matching contributions of $9,414 and non-qualified plan 401(k) matching contributions of $4,667.
Mr. Larson’s total listed in the All Other Compensation column for 2014 included payments in exchange for stock awards canceled in connection with the Merger totaling $3,908,725, qualified plan 401(k) matching contributions of $9,414 and non-qualified plan 401(k) matching contributions of $3,632, and a retention bonus related to the amendment of his Change in Control Agreement of $201,150.
Mr. Dion’s total listed in the All Other Compensation column for 2014 included payments in exchange for stock awards canceled in connection with the Merger totaling $651,419, qualified plan 401(k) matching contributions of $9,414 and non-qualified plan 401(k) matching contributions of $1,222, and a $402 charitable contribution.
Ms. Kissinger’s total listed in the All Other Compensation column for 2014 included payments in exchange for stock awards canceled in connection with the Merger totaling $2,261,790, qualified plan 401(k) matching contributions of $9,414 and non-qualified plan 401(k) matching contributions of $427, and a $402 charitable contribution.
Mr. Hixon’s total listed in the All Other Compensation column for 2014 included payments in exchange for stock awards canceled in connection with the Merger totaling $320,919, qualified plan 401(k) matching contributions of $9,414 and non-qualified plan 401(k) matching contributions of $771, and a bonus for work in connection with the Merger of $129,796.
(3)
Mr. Hutchens became TEP's CEO on May 2, 2014, when Mr. Bonavia became the Executive Board Chair.
(4)The amounts included in the Stock Awards column reflect 80.46% of the grant date fair value calculated in accordance with FASB ASC Topic 718 for restricted stock units and performance shares granted in each of the years reported, excluding the effect of forfeitures. Half of the2015 performance share awards had a grant, date fair value, based on a Monte Carlo simulation, of $57.47 per share. These awards are based on UNS Energy's compound annualized total shareholder return relative to the companies included in the Edison Electric Institute Utility Index for the three year performance period ended December 31, 2016. The remaining half had a grant date fair value, based on the grant date closing price, of $60.39 per share based on cumulative net income for the performance period ended December 31, 2016. The restricted stock units had a grant date fair value, based on the grant date closing price, of $60.39 per share. The restricted stock units vest on the third anniversary of grant over the vesting period. In the case of performance shares the amounts in the column reflect the grant date fair value assuming the probable outcome of the performance conditions. The 2014 amounts attributable to Restricted Stock Units and Performance Shares are shown on the following table:
 Restricted Stock Units Performance Shares Total
Paul J. Bonavia267,729
 522,528
 790,257
David G. Hutchens141,396
 275,963
 417,359
Kevin P. Larson97,180
 189,665
 286,845
Philip J. Dion99,123
 193,459
 292,582
Karen G. Kissinger29,154
 56,900
 86,054
Todd C. Hixon29,154
 56,900
 86,054
If the merger had not occurred, the maximum amount that each person could have received assumingif the maximum level of performance is achieved and using the[the fair market value of a share of Company common stock on the grant date ($60.39)36.28)], then the value of the payouts would have been: $1,051,522 for Paul Bonavia, $555,341be: $703,283 for David G. Hutchens, $381,677$311,855 for Kevin P. Larson, $389,311$95,317 for Philip J. Dion, $114,503Todd C. Hixon, $92,524 for Karen G. Kissinger, and $114,503$87,699 for ToddKentton C. Hixon.Grant.
Pursuant to the terms of the Merger agreement, all outstanding stock awards were canceled in exchange for cash payments in the amounts shown in the appropriate column of the table in Footnote (7) below, providing additional detail for the All Other Compensation column of the Summary Compensation Table, and also shown in Option Exercises and Stock Vested, below.


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(5)(3) 
The 20142015 PEP awards included in this column pursuant to the terms of the Merger agreement, were paid in 2014the first quarter of 2016 to each of the Named Executives.
(6)(4) 
Any increase in the present value of the accrued benefit in the Retirement Plan and Excess Benefit Plan is reported in this column. All named executives experienced an increase in the present value of their respective accrued pension benefits during 2014.2015. The present value of accumulated benefits payable is reflected in Pension Benefits, below. UNS Energy does not pay “above market” interest on non-qualified deferred compensation; therefore, this column reflects change in pension value only. See Non-qualified Deferred Compensation, below.
(7)(5) 
Mr. Bonavia retired from his position as CEO
The amounts in the All Other Compensation for 2015 column contain only Qualified 401 (k) Plan Matching Contributions.
(6)
The amounts in the All Other Compensation column for 2014 include payments in exchange for stock awards canceled in connection with the acquisition of TEP on May 2,UNS Energy by Fortis in 2014.

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GRANTS OF PLAN-BASED AWARDS – 20142015
The following table sets forth information regarding plan-based awards by UNS to the Company’s Named Executives in 20142015 on account of services to TEP and its subsidiaries. As described above, 80.46%80.90% of the amount paid by UNS on account of services in 20142015 is allocable to services to TEP and its subsidiaries. The compensation plans under which the grants in the following table were made are generally described in Compensation Discussion and Analysis, above and include the PEP, which provides for non-equity (cash) performance awards, and the 2011 Omnibus2015 Share Unit Plan, which provides for equity-based performance awards including stock options, restricted stockshare units and performance shares.share units.
  Grant Date 
Estimated Possible Payouts 
Under Non-Equity
 Incentive Plan Awards(1)
 
Estimated Future Payouts Under
Equity Incentive Plan Awards(2)
 
All Other Stock Awards: Number of Shares of Stock or Units (3)
 
Grant
Date
Fair
Value
of
Stock
and
Option
Awards(4)
Name   Threshold Target Maximum Threshold Target Maximum    
PAUL J. BONAVIA                
PEP 2/24/2014 $214,226
 $428,454
 $642,680
          
Performance Shares 2/24/2014       3,769
 8,867
 13,300
   $522,528
Restricted Stock Units 2/24/2014             4,433
 267,729
DAVID G. HUTCHENS                
PEP 2/24/2014 173,794
 347,587
 521,381
          
Performance Shares 2/24/2014       1,991
 4,683
 7,024
   275,963
Restricted Stock Units 2/24/2014             2,341
 141,396
KEVIN P. LARSON                
PEP 2/24/2014 72,971
 145,942
 218,913
          
Performance Shares 2/24/2014       1,368
 3,218
 4,828
   189,665
Restricted Stock Units 2/24/2014             1,609
 97,180
KAREN G. KISSINGER                
PEP 2/24/2014 43,739
 87,477
 131,216
          
Performance Shares 2/24/2014       410
 966
 1,448
   56,900
Restricted Stock Units 2/24/2014             483
 29,154
PHILIP J. DION                
PEP 2/24/2014 59,621
 119,242
 178,863
          
Performance Shares 2/24/2014       1,395
 3,283
 4,924
   193,459
Restricted Stock Units 2/24/2014             1,641
 99,123
TODD C. HIXON                
PEP 2/24/2014 44,191
 88,382
 132,589
          
Performance Shares 2/24/2014       410
 966
 1,448
   56,900
Restricted Stock Units 2/24/2014             483
 29,154
 Grant Date 
Estimated Possible Payouts 
Under Non-Equity
 Incentive Plan Awards(1)
 
Estimated Future Payouts Under
Equity Incentive Plan Awards (#) (2)
 
All Other Stock Awards: Number of Shares of Stock or Units (#) (3)
 
Grant
Date
Fair
Value
of
Stock
and
Option
Awards(4)
Name  Threshold Target Maximum Threshold Target Maximum    
DAVID H. HUTCHENS                
PEP1/1/2015 $179,986
 $359,973
 $539,959
          
Performance Share Units1/1/2015       6,721
 13,442
 20,164
   $407,611
Restricted Share Units1/1/2015             6,721
 224,979
KEVIN P. LARSON                
PEP1/1/2015 74,837
 149,675
 224,512
          
Performance Share Units1/1/2015       2,980
 5,961
 8,941
   180,747
Restricted Share Units1/1/2015             2,980
 99,762
TODD C. HIXON                
PEP1/1/2015 45,766
 91,531
 137,297
          
Performance Share Units1/1/2015       911
 1,822
 2,733
   55,244
Restricted Share Units1/1/2015             911
 30,492
KAREN G. KISSINGER                
PEP1/1/2015 44,417
 88,835
 133,253
          
Performance Share Units1/1/2015       884
 1,768
 2,653
   53,625
Restricted Share Units1/1/2015             884
 29,598
KENTTON C. GRANT                
PEP1/1/2015 43,686
 87,372
 131,058
          
Performance Share Units1/1/2015       838
 1,676
 2,514
   50,829
Restricted Share Units1/1/2015             838
 28,055
(1) 
The amounts shown in this column reflect the range of payouts (50%-150% of the target award) for 20142015 performance under the PEP, as described in Compensation Discussion and Analysis - Short-Term Incentive Compensation, above. These amounts are based on the individual’s current salary and position. The amount of cash incentive actually paid under the PEP for 2014

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individual’s current salary and position. The amount of cash incentive actually paid under the PEP for 2015 is reflected in the Summary Compensation Table above.
(2) 
The amounts shown in this column reflect the range (35%(50%-150% of the target award) of payouts in the form of performance sharesshare units targeted for 20142015-2017 performance under the 2011 Omnibus2015 Share Unit Plan for long-term incentive compensation, as described in the “Long-Term Incentive Compensation” section of the CD&A, above.
The target 20142015 LTI multiples, as a percentage of base salary, are 125%150% for Mr. Hutchens, 100% for Mr. Larson, 125% for Mr. Dion,and 40% each for Ms. Kissinger and 40% for Mr. Hixon. Mr. Dion's 2014 LTI opportunity reflects his contribution to TEP's 2013 rate caseMessrs. Hixon and will return to its regular percentage in 2015. The 2014 LTI multiple for Mr. Bonavia, who retired from his position as CEO of TEP on May 2, 2014, was 150% of base salary. The target LTIP award was granted partly in the form of performance shares and partly in the form of restricted stock units, with 67% of the value in the form of performance shares and the remaining 33% in the

112



form of restricted stock units.Grant. Accordingly, each Named Executive received an LTIP target award of performance sharesshare units and restricted stockshare units the total value of which was equal to the executive’s base salary multiplied by the applicable multiple (e.g., 100% for CFO), divided by the grant date fair market value of a share of UNS Energy’sFortis's common stock ($60.39)33.47), rounded down to the nearest 10 shares.1 share. The share prices listed in this footnote are converted from Canadian Dollars (CAD) based on the Wall Street Journal currency exchange rate on the grant date (12/31/14) as required in the Share Unit Plan document which was 1.1621. For example, the CFO's 20142015 base salary attributable to TEP (and LTIP target award) was $362,769. That amount$299,349, divided by $60.39,$33.47, and rounded down to the nearest 10 shares,1 share, resulted in an LTIP target award of 4,0005,961 performance sharesshare units and 2,0002,980 restricted stockshare units.
The 20142015 awards of performance shares and restricted stockshare units were intended to issue shareswill be paid in cash at the end of the performance period depending on the Company’s performance relative to the two performance criteria described in Compensation Discussion and Analysis, above. The two performance criteria operate independently; a Named Executive would have receivedmay receive a payment on account of one of the criteria without regard to performance on the other criteria. However, pursuant to the terms of the Merger agreement, the 2014 stock awards were canceled in exchange for cash payments as shown in Option Exercised and Stock Vested, below.
(3) 
The amounts shown in this column represent the number of time-based restricted stockshare units that were granted in 20142015 under the 2011 Omnibus Plan.2015 Share Unit Plan and will be paid in cash at the end of the vesting period.
(4) 
The amounts shownincluded in this column representreflect 80.90% of the grant date fair value calculated in accordance with FASB ASC Topic 718. The amounts shown718 for restricted share units and performance shares are based onshare units granted in each of the probable outcomeyears reported, excluding the effect of performance conditions.forfeitures. Half of the performance share unit awards had a grant date fair value, based on a Monte Carlo simulation, of $57.47$36.28 per share. These awards are based on UNS Energy's compound annualized total shareholder returnFortis's Shareholder Return relative to the companies included in the Edison Electric Institute Utility IndexPeer Group TSR for the three year performance period ended December 31, 2016.2017. The remaining half had a grant date fair value, based on the grant date closing price, of $60.39$33.47 per share based on cumulative net income for the performance period ended December 31, 2016.2017. The restricted stockshare units had a grant date fair value, based on the grant date closing price, of $60.39$33.47 per share. The share prices listed in this footnote are converted from Canadian Dollars (CAD) based on the Wall Street Journal currency exchange rate on the grant date (12/31/14) as required in the Share Unit Plan document which was 1.1621. The restricted stockshare units vest on the third anniversary of grant over the vesting period. In the case of performance share units, the amounts in the column reflect the grant date fair value assuming the probable outcome of the performance conditions. For more information about these awards, please refer to footnote 1 of the Summary Compensation Table and Compensation Discussion and Analysis, above.
OUTSTANDING EQUITY AWARDS AT FISCAL YEAR END - 2014
There were no equity awards outstanding at the end of 2014. All outstanding equity awards were canceled in exchange for cash at the time of the Merger.
OPTION EXERCISES AND STOCK VESTED
The following table includes certain information with respect to the disposition by the Company’s Named Executives of outstanding stock options and stock awards that vested during the year ended December 31, 2014. The awards were originally issued by UNS Energy for services to UNS Energy and all of its subsidiaries. Only a portion of the awards represented compensation for services to TEP and its subsidiaries, which was 80.46% in 2014.2015
Option Awards 
Stock Awards (2)
Stock Based Awards
Number of
Shares Acquired
on Exercise
 
Value Realized on
Exercise(1)
 
Number of
Shares Acquired
on Vesting
 
Value Realized on
Vesting
Grant Date 
Number of Shares or Units of Stock That Have Not Vested(1)
(#)
 
Market Value of Number of Shares or Units of Stock That Have Not Vested (2)
($)
 
Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (3)
(#)
 
Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested (4)
($)
Paul J. Bonavia48,228
 $1,646,494
 87,486.7
 $5,270,103
David G. Hutchens21,990
 650,358
 33,623.4
 2,025,704
1/1/2015 6,721
 $218,176 13,442
 $436,352
Kevin P. Larson80,798
 2,524,679
 31,755.6
 1,912,920
1/1/2015 2,980
 96,745
 5,961
 193,490
Philip J. Dion3,412
 116,469
 10,760.0
 648,213
Todd C. Hixon1/1/2015 911
 29,570
 1,822
 59,140
Karen G. Kissinger44,173
 1,324,742
 22455.3.
 1,352,657
1/1/2015 884
 28,703
 1,768
 57,406
Todd C. Hixon
 
 5,326.5
 320,919
Kentton C. Grant1/1/2015 838
 27,206
 1,676
 54,413
(1) 
PursuantNumber of time-based restricted share units that remain unvested as of December 31, 2015. Restricted share units vest on the third anniversary of the grant date, subject to continued service with the Merger agreement, all outstanding stock options were cancelled in exchange for a cash payment per share equal to the difference between the option exercise price and $60.25 pursuant to the Merger agreement.Company through that date.
(2) 
The amounts shown inmarket value of restricted share units and performance share units was calculated by multiplying the Stock Awards columnsnumber of the table above include 80.46% of the performance shares earned for the 2011-2013 performance period, payment of which the Compensation Committee approved on February 6, 2014 and paid in shares of Company stock on February 14, 2014. The table below showsrestricted share units outstanding or the number of performance shares that vestedshare units (as determined in accordance with the Securities and Exchange Commission, or SEC, rules and footnote 5 below), as applicable, by $32.46 which was the value realizedshare price as of 12/31/15. The share prices listed in this footnote are converted from Canadian Dollars (CAD) based on vesting, calculated using the fair market valueWall Street Journal currency exchange rate on the grant date (12/31/14) as required in the Share Unit Plan document which was 1.1621.
(3)
Performance share units vest, if at all, after three years based on the achievement of a shareperformance of Company stock on February 14, 2014 ($60.21).the cumulative goals over the applicable three-year period. The performance goals are described in the CD&A.

113108


(4)
The amounts for the 2015 performance share unit awards are shown at the target level based on the results for the first year of the 2015-2017 performance period.


OPTION EXERCISES AND STOCK VESTED
 Number of Shares Acquired on Vesting Value Realized on Vesting
Paul J. Bonavia24,189.5
 $1,456,449
David G. Hutchens2,671.3
 160,837
Kevin P. Larson8,783.8
 528,873
Philip J. Dion1,881.2
 113,264
Karen G. Kissinger6,902.7
 415,609
The amounts shown inThere were no stock options exercised or stock or share awards vested during the Stock Awards columns of the table above also include 80.46% of the total amounts paid, pursuant to the terms of the Merger agreement, for (i) all outstanding performance shares for the 2012-2014 performance period, the 2013-2015 performance period and the 2014-2016 performance period, and (ii) all outstanding restricted stock units. The per share value realized was $60.25, the price paid under the Merger.
year ended December 31, 2015.
 Number of Shares Acquired on Vesting Value Realized on Vesting
Paul J. Bonavia63,297.2
 $3,813,654
David G. Hutchens30,952.2
 1,864,867
Kevin P. Larson22,971.7
 1,384,046
Philip J. Dion8,878.8
 534,950
Karen G. Kissinger15,552.7
 937,048
Todd C. Hixon5,326.5
 320,919

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PENSION BENEFITS
The following table shows 80.46%80.90% of the present value of accumulated benefits payable to each of the Named Executives, including the number of years of service credited to each such Named Executive, under each of the Retirement Plan and the Excess Benefit Plan determined using interest rate and mortality rate assumptions used in the Company’s financial statements. See Note 8 of Notes to Consolidated Financial Statements. InformationStatements in Item 8 of this Form 10-K and the Retirement and Other Benefits, above for information regarding the Retirement Plan and the Excess Benefit Plan can be found above in Retirement and Other Benefits.Plan.
 Plan Name 
Number of Years
Credited Service
 
Present Value of
Accumulated Benefit
 
Payments During Last
Fiscal Year
Paul J. Bonavia 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 5.75 $225,777
 $
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 5.75 811,940
 
Plan Name 
Number of Years
Credited Service
 
Present Value of
Accumulated Benefit
 
Payments During Last
Fiscal Year
David G. Hutchens 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 19.50 741,593
 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 20.50 $763,775
 
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 19.50 812,778
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 20.50 1,192,238
 
Kevin P. Larson 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 29.83 1,296,566
 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 30.83 1,272,805
 
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 29.83 1,412,277
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 30.83 1,366,778
 
Philip J. Dion 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 6.83 150,201
 
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 6.83 68,941
  
Karen G. Kissinger 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 24 1,183,911
 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 25 1,283,649
 
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 24 716,043
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 25 662,945
 
Todd C. Hixon 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 16.58 484,813
 
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 17.58 495,203
 
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 16.58 168,767
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 17.58 194,627
 
Kentton C. Grant
Tucson Electric Power
Salaried Employees
Retirement Plan(1)(3)
 20.08 725,334
 
Tucson Electric Power
Excess Benefit Plan(2)(3)
 20.08 293,561
 
(1) 
The Retirement Plan is intended to meet the requirements of a qualified benefit plan for Code purposes and is funded by the Company and made available to all eligible employees. The Retirement Plan provides an annual income upon retirement based on the following formula:
1.6% x years of service (up to 25 years) x final average pay
Final average pay is calculated as the average of basic monthly earnings on the first of the month following the employee’s birthday during the five consecutive plan years in which basic monthly earnings were the highest, within the last 15 plan years before retirement. Basic monthly earnings means the monthly base salary prior to any reduction for contributions to a Code section 401(k) plan, but excluding overtime pay, bonuses or other compensation. Years of service are based on years and months of employment. A Retirement Plan participant vests in his or her retirement benefit after five years of service. The maximum benefit available under the Retirement Plan is an annual income of 40% of final average pay (as defined above). Plan compensation for purposes of determining final average pay is limited by compensation limits under Code Section 401(a)(17). For 2014,2015, the limit was $260,000$265,000 in annual income. Employees are eligible to retire early with an unreduced pension benefit if (i) the combination of their age and years of service equals or exceeds 85, or (ii) they are age 62 and have completed 10 years of service. Employees are also eligible for early retirement with a reduced pension benefit at age 55 with at least 10 years of service. The reduction at age 55 with 10 years of service is 42.6% and continues to be reduced at a lesser amount up to age 62, at which point there is no

109


reduction. All optional forms of the benefit are actuarially equivalent. Mr.Messrs. Larson and Grant and Ms. Kissinger are currently eligible for early retirement.
(2) 
The Retirement Plan is subject to Code limitations on the amount of compensation that can be taken into account and on the amount of benefits that can be provided. The Excess Benefit Plan provides the retirement benefits to executive officers that would have been provided under the Retirement Plan if the Code limitations did not apply. The Excess Benefit Plan retirement benefit is calculated generally using the same pension formula as the Retirement Plan formula but with some modifications. Compensation for purposes of the Excess Benefit Plan is determined without regard to Code limits on compensation and by including voluntary salary reductions to the DCP and any annual incentive payment received under the PEP. The retirement benefit payable from the Excess Benefit Plan is reduced by the benefit payable to that person from the Retirement Plan. Vesting occurs after five years of service. Benefits are payable in a lump sum or annuity, at the participant’s election. Messrs. Larson and Grant and Ms. Kissinger are currently eligible for early retirement.

115



provided under the Retirement Plan if the Code limitations did not apply. The Excess Benefit Plan retirement benefit is calculated generally using the same pension formula as the Retirement Plan formula but with some modifications. Compensation for purposes of the Excess Benefit Plan is determined without regard to Code limits on compensation and by including voluntary salary reductions to the DCP and any annual incentive payment received under the PEP. The retirement benefit payable from the Excess Benefit Plan is reduced by the benefit payable to that person from the Retirement Plan. Vesting occurs after five years of service. Benefits are payable in a lump sum or annuity, at the participant’s election. Mr. Larson and Ms. Kissinger are currently eligible for early retirement.
(3) 
The presentIn preparing the aggregate increase in actuarial value of accumulated benefits was calculated using a discount rate of 4.1%the above plans, the following assumptions and RP-2000 Healthy Mortality tables.methods were used:
Measurements were made as of Tucson Electric Power Company's ASC 715 measurement date of December 31, 2015.
December 31, 2015 calculations were done using the spot rates underlying the Rate:Link 60-90 Yield Curve as of December 31, 2015 and RP-2014 mortality table, projecting mortality generationally at Scale MP-2015, with the following adjustments:
The RP-2014 mortality table was adjusted to back out MP-2014 experience to 2006, then add back in MP-2015 through 2015.
The MP-2015 projection scale was adjusted so that the ultimate rate of 1% at age 85 was reduced to 0.75%.
The MP-2015 projection scale was further adjusted to reduce the convergence period to 15 years, rather than 20.
No pre-retirement mortality was assumed. For measurements at December 31, 2014, a discount rate of 4.10% and RP-2000 Female with generational projection using scale BB Female for females and RP-2000 Male with generational projection using scale BB Male for males, and both with no pre-retirement mortality were used for the Salaried and Excess Plans. This discount rate reflects rates as of December 31, 2015.
All participants were assumed to elect a 10 year Certain and Life benefit at the earliest age at which they are projected to be eligible for unreduced benefits.
NON-QUALIFIED DEFERRED COMPENSATION
UNS Energy sponsors the DCP for directors, executive officers and certain other employees of UNS Energy. Under the DCP, employee participants are allowed to defer on a pre-tax basis up to 100% of base salary and cash bonuses, and non-employee director participants are allowed to defer up to 100% of their cash compensation. The DCP also allows the executive employee participants to receive the 401(k) Company match that cannot be contributed to the 401(k) Plan because of limitations imposed by the Code. The deferred amounts are valued daily as if invested in one or more of a number of investment funds, including UNS Energy stockshare units, each of which may appreciate or depreciate in value over time. The choice of investment funds is determined by the individual participant. The amounts shown in the table below represent 80.46%80.90% of the total amounts, to reflect the portion allocable to TEP and its subsidiaries.
  
Executive
Contributions
in Last Fiscal
Year (1)
 
Registrant
Contributions
in Last Fiscal
Year(2)
 
Aggregate
Earnings in
Last Fiscal
Year (3)
 
Aggregate
Withdrawals/
Distributions
 
Aggregate
Balance at
Last Fiscal
Year End (4)
Paul J. Bonavia $
 $
 $
 $43,357
 $
David G. Hutchens 
 
 
 19,443
 
Kevin P. Larson 
 
 3,123
 59,835
 54,068
Philip J. Dion 
 
 
 1,222
 
Karen G. Kissinger 
 
 3,441
 6,292
 121,766
Todd C. Hixon 
 
 
 771
 
 
Executive
Contributions
in Last Fiscal
Year (1)
 
Aggregate
Earnings in
Last Fiscal
Year (2)
 
Aggregate
Withdrawals/
Distributions
 
Aggregate
Balance at
Last Fiscal
Year End (3)
David G. Hutchens
 
 
 
Kevin P. Larson
 8
 
 54,372
Todd C. Hixon
 
 
 
Karen G. Kissinger
 19
 
 122,451
Kentton C. Grant42,470
 11
 
 83,181
(1) 
Represents contributions to the DCP by the Named Executives during the year. The amounts shown, if any, are included in the salary column of the Summary Compensation Table, above.

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(2)
Represents Company contributions to the DCP in 2014 for the 2014 plan year. These amounts are included in the “All Other Compensation” column of the Summary Compensation Table, above.
(3) 
Represents the total market based earnings (losses) for the year on all deferred compensation under the DCP based on the investment returns associated with the investment choices made by the Named Executive. Amounts in this column are not included in the Summary Compensation Table.
(3)
The aggregate balance includes compensation that was previously earned and reported in the Summary Compensation Table for 2013 and 2014 (if any) as follows: Mr. Larson—$8,817 and Ms. Kissinger—$1,287. Benefits under the plan will be distributed on the first to occur of the following events: separation from service, disability or death, in the form of either a lump sum or installment payments. The following table shows the deemed investment options available under the DCP and the annual rate of return for the calendar year ended December 31, 2015.
(4)The aggregate balance includes compensation that was previously earned and reported in the Summary Compensation Table for 2012 and 2013 (if any) as follows: Mr. Larson—$8,779 and Ms. Kissinger—$1,934. Benefits under the plan will be distributed on the first to occur of the following events: separation from service, disability or death, in the form of either a lump sum or installment payments. The following table shows the deemed investment options available under the DCP and the annual rate of return for the calendar year ended December 31, 2014.
Name of Fund Rate of Return Name of Fund Rate of Return Rate of Return Name of Fund Rate of Return
Fidelity Retirement Money Market 0.01% Fidelity Spartan Us Equity Index 13.65% 0.02% Fidelity Spartan Us Equity Index 1.35%
Fidelity Intermediate Bond 3.31% Fidelity Growth Company 14.57% 0.68% Fidelity Growth Company 7.94%
Janus Flexible Bond 4.93% Fidelity Low Price Stock 7.75% 0.09% Fidelity Low Price Stock (0.45)%
Fidelity Asset Manager 5.48% Janus Worldwide 7.25% (0.44)% Janus Worldwide (2.30)%
Fidelity Equity-Income 8.81% T. Rowe Price Blue Chip Growth 9.28% (3.41)% T. Rowe Price Blue Chip Growth 11.15%
Fidelity Managed Income 1.17% Fidelity Diversified International K 3.24%
RS Value Y (5.99)% Franklin Utilities A (7.38)%
American Beacon Small Cap Value Instl (5.04)% Allianz NFJ International Value Instl (13.15)%
Fidelity Small Cap Stock 2.40% 
POTENTIAL PAYMENTS UPON TERMINATION OR CHANGE IN CONTROL
In order to ensure that the Company is able to retain its Named Executives, the Compensation Committee hadhas determined that it is in the best interest of the Company and its shareholders to enter into change in control agreements with those Named Executives, as well as to maintain a severance pay plan for all of the Company’s non-union employees, including the Named Executives.

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Change in Control Agreements
Each of our current executive officers, including our named executive officers who are currently employed by the Company, is party to a change in control agreement with UNS Energy.Energy entered into prior to the acquisition by Fortis. Under the change in control agreements, the executive officer will be entitled to receive change in control benefits if he or she incurs a separation from service due to the Company’s termination of his or her employment without “Cause” or due to the executive officer’s termination of employment with the Company for “Good Reason” during the six-month period prior to the occurrence of a Change in Control and if the executive officer’s separation from service is effected in contemplation of such Change in Control. The executive officer also will be entitled to receive these benefits if he or she incurs a separation from service due to the Company’s termination of his or her employment without Cause or due to the executive officer’s termination of employment for Good Reason during the 24-month period following the occurrence of a Change in Control.
A Change in Control is defined asas: (i) the acquisition of beneficial ownership of 40% of the common stock of UNS Energy,Energy; (ii) certain changes in the Board,Board; (iii) the closing of certain mergers or consolidationsconsolidations; or (iv) certain transfers of the assets of UNS Energy. Notwithstanding the foregoing, a Change in Control will not be deemed to have occurred until: any required regulatory approval, including any final non-appealable regulatory order, has been obtained; and the transaction that would otherwise be considered a Change in Control closes.
A Change in Control with UNS Energy occurred on August 15, 2014, the time of the Merger.acquisition of UNS Energy by Fortis. The protection period ends on August 13, 2016. Since there was a Change in Control, if a qualifying separation occurs during the protection period,on or before August 13, 2016, then the executive officer will be entitled to severance benefits in the form of: (i) a single lump sum payment in an amount equal to two (for Mr. Hutchens, who was entitled to one and one-half in his previous role as President and COO, and Mr. Bonavia in both his CEO and Executive Board Chair roles)Hutchens), one and one-half (for Messrs. Larson and Dion)Mr. Larson) or one (for Ms. Kissinger and Mr. Hixon)Messrs. Hixon and Grant) times the greater of (a) the executive officer’s annualized base salary as of the date of the executive officer’s separation from service, or (b) the executive officer’s annualized base salary in effect immediately prior to any material diminution in the executive officer’s base salary following execution of the change in control agreement; (ii) a single lump sum cash payment in an amount equal to two (for Mr. Hutchens, who was entitled to one and one-half in his previous role as President and COO, and Mr. Bonavia in both his CEO and Executive Board Chair roles)Hutchens), one and one-half (for Messrs. Larson and Dion)Mr. Larson) or one (for Ms. Kissinger and Mr. Hixon)Messrs. Hixon and Grant) times the average payment to which the executive officer was entitled pursuant to the short-term incentive compensation plan for the three calendar years immediately preceding the calendar year in which the executive officer’s separation from service occurs or, if that data is not available, the executive officer’s target payment under the short-term incentive compensation plan; (iii) a single lump sum cash payment in an amount equal to a prorated portion of the actual payment to which the executive officer would have been entitled under the short-term incentive compensation plan for the

111


calendar year in which the executive officer’s separation from service occurs; and (iv) a single lump sum cash payment in the amount of the payment, if any, to which the executive officer is entitled under the short-term incentive compensation plan (based on the executive officer’s actual performance) for the year prior to the year in which the executive officer’s separation from service occurs, to the extent not already paid to the executive officer. “Good reason” is defined under these agreements to mean (1)mean: (i) a material, adverse diminution in the executive officer’s authority, duties or responsibilities; (2)(ii) a material change in the geographic location at which the executive officer must primarily perform services; (3)(iii) a material diminution in the executive officer’s base salary provided that such diminution is not a result of a generally applicable reduction in the base salary of all officers of the Company in an amount that does not exceed 10%; or (4)(iv) any action or inaction that constitutes a material breach of the agreement by the Company. “Cause” is defined under these agreements to meanmean: (i) the willful failure of the executive officer to perform any of the executive officer’s duties for the Company which continues after the Company has given the participantexecutive written notice describing the failure and an opportunity to cure the failure,failure; (ii) a material violation of Company policy,policy; (iii) any act of fraud or dishonesty,dishonesty; (iv) the executive officer’s gross misconduct in the performance of the executive officer’s duties that results in material economic harm to the Company,Company; (v) the executive officer’s conviction of, or plea of guilty or no contest, to a felony,felony; or (vi) the executive officer’s material breach of the executive officer’s employment agreement with the Company, if any.
The executive officer would also be entitled to continue to participate in TEP’s health, life, disability or other insurance benefit plans for a period expiring on the earlier of (a) 24 months (for Mr. Hutchens, who was entitled to 18 months in his previous role as President and COO, and Mr. Bonavia in both his CEO and Executive Board Chair roles)Hutchens), 18 months (for Messrs. Larson and Dion)Mr. Larson), or 12 months (for Ms. Kissinger and Mr. Hixon)Messrs. Hixon and Grant) following the executive officer’s separation from service, or in some cases for the respective period following the Change in Control event, or (b) the day on which the executive officer becomes eligible to receive any substantially similar benefits, on a benefit-by-benefit basis, under any plan or program of any successor employer. In the event the executive officer elected a high deductible health care plan pursuant to which TEP has agreed to make contributions to the executive officer’s health savings account, then TEP will pay to the executive officer a single lump sum cash payment in an amount equal to the contributions that TEP would have made to the executive officer’s health savings account during the respective benefit continuation period described above had the executive officer not incurred the separation from service.

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The Change in Control Agreements provide that the executive officer shall be employed by UNS Energy or one of its subsidiaries or affiliates, in a position comparable to the current position, with base compensation and benefits at least equal to the then-current compensation and benefits, for an employment period of two years after a Change in Control (subject to earlier termination for cause or the executive officer’s termination without good reason).
The Change in Control Agreements also contain a number of material conditions or obligations applicable to the receipt of payments or benefits, which require the executive officer toto: (i) continue to abide by the terms and provisions of the Company’s policies that protect various forms of confidential information and intellectual property; (ii) refrain from consulting with, engaging in or acting as an advisor to another company about business that competes with the Company; (iii) refrain from soliciting business for or in connection with any competing business (a) from any individual or entity that obtained products or services from the Company at any time during the executive officer’s employment with the Company or (b) from any individual or entity that was solicited by the executive officer on behalf of the Company; and (iv) refrain from soliciting employees of the Company who would have the skills and knowledge necessary to enable or assist efforts by the executive officer to engage in a competing business. Item (i) referred to in this paragraph contains no durational limit, nor do the Change in Control Agreements include any provision providing for waiver of a breach of item (i). Items (ii) through (iv) referred to in this paragraph are effective for a period of one year following the date of the executive officer’s termination. Breach of items (ii) through (iv) is waived if the Company materially defaults on any of its obligations under the Change in Control Agreements.
No excise tax gross-ups are provided. Rather, severance payments to executives are cut back to the safe harbor limit if the reduction results in the executive receiving a greater after-tax benefit than if the excise tax were paid by the executive on the excess parachute payments; otherwise, all payments would be paid and the executive would pay the excise tax.
All long-term incentive awards contain a double trigger vesting provision, which provides for accelerated vesting only if outstanding awards are not assumed by an acquirer. Asacquirer and also provide for accelerated vesting upon a result of the Merger, Fortis, Inc. did not assume the outstanding awards and the 2012, 2013, and 2014 awards vested and were paid pursuant to the Merger agreement.qualifying termination following a Change in Control. This double trigger vesting provision applies to future awards and/or if the Named Executive is terminated without cause within 24 months of a Change in Control. The double trigger, which is viewed as a corporate governance “best practice,” ensures that the Named Executives do not receive accelerated benefits unless they are adversely affected by the Change in Control.
Effective May 2, 2014, Mr. Bonavia became Executive Board Chair of UNS Energy and TEP and retired from his position as CEO. Incident to his relinquishing his position as CEO, Mr. Bonavia waived his right to claim that the change in responsibility will provide him with good reason to terminate his employment and receive benefits under his Change in Control agreement. Mr. Bonavia also agreed to the termination of his Change in Control agreement on the 31st day following the closing of the Merger. Mr. Bonavia retired from UNS Energy on September 19, 2014.
On May 2, 2014, Mr. Hutchens was appointed CEO of UNS Energy and TEP in addition to his duties as President and Chief Operating Officer of each company. Incident to the appointment, Mr. Hutchens's Change in Control agreement was modified to increase the benefits to which he will be entitled if his employment is terminated by UNS Energy without cause or by Mr.

112


Hutchens with good reason following a change in control and to provide that he was not entitled to terminate employment and receive the benefits provided by his Change in Control Agreement solely for the reason that he would no longer be CEO of a publicly traded company as a result of the Merger.acquisition of UNS Energy by Fortis.
On November 13, 2014, UNS Energy and Mr. Larson entered into a retention bonus agreement, the terms of which were approved by the UNS Energy Human Resources and Governance Committee. The retention bonus agreement amends Mr. Larson's change in control agreement to provide that changes in Mr. Larson's responsibilities that occurred as a result of the Merger,acquisition of UNS Energy by Fortis, or that may occur for succession purposes based on a future mutually-agreed transition process, shall not constitute good reason for Mr. Larson to terminate his employment and receive benefits under the change in control agreement.
Severance Pay Plan
In addition, the Company has a severance pay plan (Severance Plan) for all of the Company’s non-union employees, including its Named Executives, which provides for severance benefits in the event of a qualifying termination, which means a termination without cause without a change in control. Cause for termination under the Severance Plan meansmeans: (i) the willful failure of the employee to perform any of the employee’s duties for the employer which continues after the employer has given the participant written notice describing the failure and an opportunity to cure the failure,failure; (ii) a material violation of Company policy,policy; (iii) any act of fraud or dishonesty,dishonesty; (iv) willful failure to report to work for three days or to report to work on the agreed-upon date after a scheduled leave,leave; or (v) willfully engaging in conduct that is demonstrably and materially injurious to the Company or any affiliate, monetarily or otherwise, including acts of fraud, misappropriation, violence or embezzlement for personal gain at the expense of the Company or any affiliate, conviction of (or plea of guilty or no contest or its equivalent to) a felony, or a misdemeanor involving immoral acts.

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In the event of a qualifying termination, the Named Executive would be entitled toto: (i) a cash severance payment equal to a multiple of base salary (two times for Mr. Hutchens, who was entitled to one and one-half times in his previous role as President and COO, one and one-half times for Messrs.Mr. Larson, and Dion, and one time for Ms. Kissinger and Mr. Hixon; Mr. Bonavia, who retired from TEP May 2, 2014 was eligible for two times his base salary);Messrs. Hixon and Grant; (ii) continued subsidy of the premiums for COBRA medical, dental and vision coverage at the same rate as that paid by the Company prior to the separation from service for a period of the lesser of (a) 12 months, or (b) the date when the Named Executive becomes eligible for comparable benefits offered by a subsequent employer; and (iii) a portion of the amount to which the Named Executive would have been entitled under the Company’s PEP or any successor plan, based on the executive’s target payment for the year in which the executive’s separation from service occurs, had the Named Executive not incurred a separation from service. Receipt of benefits under the Severance Plan is contingent upon execution of a release of claims against the Company and subject to compliance with restrictive covenants, including perpetual confidentiality and non-disparagement provisions, and non-compete and non-solicitation requirements effective for the applicable severance period (two years for Mr. Hutchens, who was entitled to one and one-half years in his previous role as President and COO, one and one-half years for Messrs.Mr. Larson, and Dion, and one year for Ms. Kissinger and Mr. Hixon; Mr. Bonavia, who retired from his position as CEO of TEP on May 2, 2014 was eligible for two years in both his CEOMessrs. Hixon and Executive Board Chair roles)Grant). Duplication of benefits provided under the Severance Plan is not permitted, and benefits payable under the Severance Plan cease in the event the Named Executive becomes eligible for change in control severance benefits or if the Named Executive has an employment agreement that provides for severance benefits.
In the event a Named Executive becomes eligible to receive severance benefits under the Severance Plan and has elected a health care option pursuant to which the Company has agreed to make pre-tax contributions to the Named Executive’s Health Savings Account, then the Company will pay the Named Executive an amount equal to the contributions the Company would have made to the Named Executive’s health savings account during the twelve-month period immediately following the Named Executive’s separation from service, plus a tax allowance in an amount equal to the federal, state and local taxes imposed on the Named Executive with respect to such contributions and with respect to the tax allowance. While as a general matter the Company does not provide tax gross-ups for severance arrangements or other benefits, it was deemed appropriate in this very limited circumstance because (1)because: (i) this particular type of benefit would be provided pre-tax, if the individual were still employed; (2)(ii) the amounts in question are exceptionally small; and (3)(iii) this treatment is available to all unclassified employees, not just the Named Executives, who become entitled to severance benefits under the Severance Plan and participate in the type of health care option described in thisthe paragraph above.
Other than the agreements described above, UNS Energy has not entered into any severance agreements or employment agreements with any Named Executives.

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The following table and summary set forth potential payments payable to the Named Executives (other than Mr. Bonavia, who retired from his position as CEO of TEP on May 2, 2014) upon termination of employment or a Change in Control assuming their employment was terminated on December 31, 2014.2015.
 
If Retirement or
Voluntary
Termination
Occurs (1)
 
If “Change In Control”
and Qualifying
Termination Occurs(2)
 
If Death or
Disability
Occurs(3)
 
If “Non-
Change In
Control”
Termination
Occurs(4)
If Retirement or
Voluntary
Termination
Occurs (1)
 
If “Change In 
Control” and Qualifying
Termination Occurs(2)
 
If Death or
Disability
Occurs(3)
 
If “Non-
Change In
Control”
Termination
Occurs(4)
David G. Hutchens $
 $1,199,170
 $
 $883,562
$
 $2,428,415
 $
 $2,428,415
Kevin P. Larson 
 656,546
 
 439,227

 1,108,825
 
 1,108,825
Philip J. Dion 
 533,863
 
 373,267
Todd C. Hixon
 495,409
 
 430,778
Karen G. Kissinger 
 331,132
 
 235,683

 512,354
 
 512,354
Todd C. Hixon 
 306,096
 
 225,825
Kentton C. Grant  475,837
   475,837
(1) 
In the event of retirement or voluntary termination, each of the Named Executives would be entitled to receive vested and accrued benefits payable from the Retirement Plan and the Excess Benefit Plan, but no form or amount of any such payment would be increased or otherwise enhanced nor would vesting be accelerated with respect to such plans. In addition, no accelerated vesting of options, restricted stockshare units or performance sharesshare units would occur. Retirement Plan and Excess Benefit Plan information for the Named Executives is set forth in the Pension Benefits Table above.

(2)
The amounts shown represent the following:
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(2)The amounts shown represent the following:
 Cash 
Prorated
Non-equity
Incentive Award
 
Medical
Benefits
 TotalCash 
Prorated
Non-equity
Incentive Award
 Restricted Share Units Performance Share Units 
Medical
Benefits
 Total
David G. Hutchens $1,169,983
 $
 $29,187
 $1,199,170
$1,380,088
 $359,973
 $218,176
 $436,352
 $33,826
 $2,428,415
Kevin P. Larson 654,443
 
 2,103
 656,546
666,826
 149,675
 96,745
 193,490
 2,089
 1,108,825
Philip J. Dion 510,548
 
 23,315
 533,863
Todd C. Hixon309,539
 91,531
 29,570
 59,140
 5,629
 495,409
Karen G. Kissinger 314,142
 
 16,990
 331,132
318,060
 88,835
 28,703
 57,406
 19,350
 512,354
Todd C. Hixon 301,227
 
 4,869
 306,096
Kentton C. Grant294,529
 87,372
 27,206
 54,413
 12,317
 475,837
Amounts shown in the column headed Prorated Non-equity Incentive Award above represent the total "target" PEP award for 2014.2015.
(3) 
In the event of death, the Named Executive’s survivor would be entitled to receive a survivor annuity from the Retirement Plan and Excess Benefit Plan. The amount payable to the survivor would be less than the amount that would otherwise have been payable to the Named Executive had the Named Executive survived and received retirement benefits under the Retirement Plan and Excess Benefit Plan. There would be no enhancements as to form, amount or vesting of such benefits in the event of a Named Executive’s death.
(4)
This column reflects the amounts payable to the Named Executives in the event of an involuntary termination without cause or a resignation for good reason, as of December 31, 2015, under the Severance Plan. The amounts shown represent the following:
(4)This column reflects the amounts payable to the Named Executives in the event of an involuntary termination without cause or a resignation for good reason, as of December 31, 2014, under the Severance Plan. The amounts shown represent the following:
 Cash 
Pro-Rated
Non-equity
Incentive
Award
 
Medical
Benefits
 TotalCash 
Pro-Rated
Non-equity
Incentive
Award
 Restricted Share Units Performance Share Units 
Medical
Benefits
 Total
David G. Hutchens $868,968
 $
 $14,594
 $883,562
$1,380,088
 $359,973
 $218,176
 $436,352
 $33,826
 $2,428,415
Kevin P. Larson 437,826
 
 1,401
 439,227
666,826
 149,675
 96,745
 193,490
 2,089
 1,108,825
Philip J. Dion 357,725
 
 15,542
 373,267
Todd C. Hixon244,908
 91,531
 29,570
 59,140
 5,629
 430,778
Karen G. Kissinger 218,693
 
 16,990
 235,683
318,060
 88,835
 28,703
 57,406
 19,350
 512,354
Todd C. Hixon 220,955
 
 4,870
 225,825
Kentton C. Grant294,529
 87,372
 27,206
 54,413
 12,317
 475,837
Director Compensation
All TEP directors are also named executive officers of TEP and received no additional compensation for services as a director. All of their compensation is reflected in the Summary Compensation Table, above.
Compensation Committee Interlocks and Insider Participation
All members of the UNS Energy Compensation Committee and Human Resources and Governance Committee during fiscal year 20142015 were independent directors, except for Messrs.Mr. Perry, and Walker, who areis an executive officersofficer of Fortis. No CompensationHuman Resources and Governance Committee member

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had any relationship requiring disclosure under Transactions with Related Persons, in Part III, Item 13,13. Certain Relationships and Related Transactions and Director Independence, below. During fiscal year 2014,2015, none of the Company’s executive officers served on the CompensationHuman Resources and Governance Committee (or its equivalent) or the Board of Directors of another entity whose executive officer(s) served on UNS Energy’s Compensation Committee or Human Resources and Governance Committee, any other board committee, or the Board of Directors of UNS Energy or TEP as a whole.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
All of the outstanding shares of common stock, no par value, of TEP are held by UNS Energy, which is an indirect, wholly owned subsidiary of Fortis.


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ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE
Director Independence
TEP’s directors are not independent since they are executive officers of TEP and UNS Energy. There are no standing committees of the Board of Directors of TEP.
As described in Part III, Item 1010. Directors, Executive Officers and Corporate Governance, above, the Audit and Risk Committee of the UNS Energy Board of Directors is responsible for overseeing the accounting and financial reporting process and audits of the financial statements of UNS Energy and its consolidated subsidiaries, including TEP.
As described in Part III, Item 11, Executive Compensation, above, the Human Resources and Governance Committee of the UNS Energy Board of Directors is responsible for overseeing the executive compensation policies and practices of UNS Energy and its consolidated subsidiaries, including TEP.
The Board of Directors of UNS Energy has adopted Director Independence Standards that comply with New York Stock Exchange (NYSE) rules for determining independence, among other things, in order to determine eligibility to serve on the Audit and Risk Committee and the Human Resources and Governance Committee of UNS Energy. Neither UNS Energy nor TEP has any securities listed on the NYSE or any other national securities exchange or inter-dealer quotation system requiring that directors or committee members be independent but, in approving the acquisition of UNS Energy by Fortis, the ACC required that a majority of the members of the UNS Energy Board of Directors be independent. The written charters of the UNS Energy Audit and Risk Committee and Human Resources and Governance Committee each require that a majority of the members of each such committee meet both UNS Energy’s Director Independence Standards and independence standards of the NYSE. The UNS Energy Director Independence Standards are available on TEP’s website at www.tep.com/about/investors/.
No director may be deemed independent unless the Board of Directors of UNS Energy affirmatively determines, after due deliberation, that the director has no material relationship with UNS Energy or any of its subsidiaries either directly or as a partner, shareholder or executive officer of an organization that has a relationship with UNS Energy or any of its subsidiaries. In each case, the Board of Directors of UNS Energy broadly considers all the relevant facts and circumstances from the standpoint of the director as well as from that of persons or organizations with which the director has an affiliation and applies these standards.
Annually, the UNS Energy board determines whether each director meets the criteria of independence. Based upon the foregoing criteria, the UNS Energy board has deemed each director of UNS Energy to be independent, with the exception of Messrs. Hutchens, Perry, Walker and Laurito. Mr. Hutchens is the President and Chief Executive Officer of UNS Energy and TEP. Messrs.Mr. Perry and Walker areis an executive officersofficer of Fortis. Mr. Laurito is an executive officer of Central Hudson Gas and Electric Corporation, another wholly owned subsidiary of Fortis. For each other director who is deemed independent, there were no other significant transactions, relationships or arrangements that were considered by the UNS Energy board in determining that the director is independent. See “TransactionsTransactions with Related Persons”Persons, below.
Each member of UNS Energy’s Audit and Risk Committee and Human Resources and Governance Committee meets the independence criteria of both the Director Independence Standards and the NYSE listing standards, with the exception of Messrs.Mr. Perry, and Walker, who areis an executive officersofficer of Fortis, and Mr. Laurito, who is an executive officer of Central Hudson Gas and Electric Corporation. Mr. Hutchens is not a member of either committee.

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Transactions with Related Persons
The UNS Energy Board of Directors has adopted a written Policy on Review of Transactions with Related Persons (“Related Person Policy”) under which it reviews related person transactions. The policy is available on TEP’s website at www.tep.com/about/investors/. The Related Person Policy specifies that certain transactions involving directors, executive officers, significant shareholders and certain other related persons in which UNS Energy or its subsidiaries, including TEP, is or will be a participant and are of the type required to be reported as a related person transaction under Item 404 of Regulation S-K shall be reviewed by the UNS Energy Audit and Risk Committee for the purpose of determining whether such transactions are in the best interest of UNS Energy and its subsidiaries. The Related Person Policy also establishes a requirement for directors and executive officers of UNS Energy and its subsidiaries to report transactions involving a related party that exceed $120,000 in value. TEP is not aware of any transactions entered into since the beginning of last year that did not follow the procedures outlined in the Related Person Policy.


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ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES
Pre-Approved Policies and Procedures
Rules adopted by the SEC in order to implement requirements of the Sarbanes-Oxley Act of 2002 require public company audit committees to pre-approve audit and non-audit services. UNS Energy’s Audit and Risk Committee has adopted a policy pursuant to which audit, audit-related, tax, and other services are pre-approved by category of service. Recognizing that situations may arise where it is in the Company’s best interest for the auditor to perform services in addition to the annual audit of the Company’s financial statements, the policy sets forth guidelines and procedures with respect to approval of the four categories of service designed to achieve the continued independence of the auditor when it is retained to perform such services for UNS Energy. The policy requires the Audit and Risk Committee to be informed of each service and does not include any delegation of the Audit and Risk Committee’s responsibilities to management. The Audit and Risk Committee may delegate to the Chair of the Audit and Risk Committee the authority to grant pre-approvals of audit and non-audit services requiring Audit and Risk Committee approval where the Audit and Risk Committee Chair believes it is desirable to pre-approve such services prior to the next regularly scheduled Audit and Risk Committee meeting. The decisions of the Audit and Risk Committee Chair to pre-approve any such services from one regularly scheduled Audit Committee meeting to the next shall be reported to the Audit and Risk Committee.
Fees
The following table details fees paid to PricewaterhouseCoopers LLP (PwC) for professional services during 2013. Effective October 7, 2014, PwC was dismissed as the independent auditors and replaced with Ernst and Young LLP (EY) as a result of the Fortis acquisition. The table details fees paid to EY for professional services during 2015 and 2014. The Audit and Risk Committee has considered whether the provision of services to TEP by EY, beyond those rendered in connection with their audit and review of the TEP’s financial statements, is compatible with maintaining their independence as auditor.
TEP's fees for principal accountant services are as follows:
 EY PwC
 2014 2013
 Thousands of Dollars
Audit Fees(1)
$966
 $1,731
Audit-Related Fees
 47
Tax Fees84
 94
All Other Fees
 53
Total$1,050
 $1,925
(1)
Includes $991 thousand of fees billed directly to TEP in 2013, and $739 thousand of fees billed to UNS Energy and allocated to TEP in 2013.
Decrease in Audit-Related and Other Fees are due to the change in our principal accountant in 2014, resulting in exclusion of such prior accountant fees for services provided in 2014.
(in thousands)2015 2014
Audit Fees$1,352
 $1,206
Audit-Related Fees
 
Tax Fees70
 84
All Other Fees
 
Total$1,422
 $1,290
Audit fees include fees for the audit of TEP’s consolidated financial statements included in TEP’s Annual Report on Form 10-K and review of financial statements included in TEP’s Quarterly Reports on Form 10-Q. Audit fees also include services provided in connection with comfort letters, consents and other services related to SEC matters, financing transactions, and statutory and regulatory audits. For 2013, audit fees included TEP's allocated share of fees for the audit of effectiveness of internal control over financial reporting and management's assessment of the effectiveness of internal control over financial reporting for UNS Energy.
Audit-related fees during 2013 principally include fees for employee benefit plan audits, and accounting consultations to the extent necessary for PwC to fulfill their responsibilities under generally accepted auditing standards.
Tax fees reported for 2013 include fees for tax compliance services2015 and tax advice. Tax fees reported for 2014 include fees for tax appeals, and in 2014 for consulting.
All Other Fees consist of fees for all other services other than those reported above, principally including subscription fees for research tools and training.

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All services performed by our principal accountant are approved in advance by the Audit and Risk Committee in accordance with the Audit and Risk Committee’s pre-approval policy for services provided by the Independent Registered Public Accounting Firm.


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PART IV
ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES
 Page
(a) (1) Consolidated Financial Statements as of December 31, 20142015 and 20132014 and for Each of the Three Years in the Period Ended December 31, 20142015 
  
  
(2) Financial Statement Schedule 
Schedule IIAll schedules have been omitted because they are either not applicable, not required or the information required to be set forth therein is included on the Consolidated Financial Statements or notes thereto. 
  
(3) Exhibits 
  
Reference is made to the Exhibit Index commencing on page 126119.
 


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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.
   TUCSON ELECTRIC POWER COMPANY
   (Registrant)
    
Date:02/19/15February 18, 2016 /s/ Kevin P. Larson
   Kevin P. Larson
   Senior Vice President and Chief
   Financial Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
    
Date:02/19/15February 18, 2016 /s/ David G. Hutchens*
   David G. Hutchens
   President, Chief Executive Officer, and Director
   (Principal Executive Officer)
   
Date:02/19/15February 18, 2016 /s/ Kevin P. Larson
   Kevin P. Larson
   Senior Vice President, Chief Financial Officer, and Director
   (Principal Financial Officer)
   
Date:02/19/15February 18, 2016 /s/ Frank P. Marino*
   Frank P. Marino
   Vice President and Controller
   (Principal Accounting Officer)
    
Date:February 19, 201518, 2016 /s/ Philip J. Dion*Todd C. Hixon*
   Philip J. DionTodd C. Hixon
   Director
   
Date:02/19/15February 18, 2016By:/s/ Kevin P. Larson
   Kevin P. Larson
   *As attorney-in-fact for each of the persons indicated


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EXHIBIT INDEX
*2(a) Agreement and Plan of Merger, dated as of December 11, 2013, among FortisUS Inc., Color Acquisition Sub Inc., UNS Energy Corporation and solely for purposes of Section 5.5(a) and 8.15, Fortis Inc. (Form 8-K, dated December 12, 2013, File No. 1-137391-05924 - Exhibit 2.1).
   
*2(a)(1) First Amendment to the Agreement and Plan of Merger, dated as of August 14, 2014, by and among FortisUS Inc., Color Acquisition Sub Inc. and UNS Energy Corporation (Form 8-K, dated August 14, 2014, File No. 1-05924 - Exhibit 2.2)
*2(b)(1)Asset Purchase and Sale Agreement, dated as of December 23, 2013, between Gila River Power LLC and Tucson Electric Power Company and UNS Electric, Inc. (Form 8-K, dated December 27, 2013, File No. 1-13739 - Exhibit 2.1)
*2(b)(2)First Amendment, dated February 14, 2014, to the Asset Purchase and Sale Agreement between Gila River Power LLC and Tucson Electric Power Company and UNS Electric, Inc. (Form 10-K for the year ended December 31, 2013, File No. 1-13739 - Exhibit 2(b)(2)).
   
*3(a) Restated Articles of Incorporation of TEP, filed with the ACC on August 11, 1994, as amended by Amendment to Article Fourth of our Restated Articles of Incorporation, filed with the ACC on May 17, 1996. (Form 10-K for the year ended December 31, 1996, File No. 1-5924-Exhibit1-05924 - Exhibit No 3(a)).
   
*3(a)(1) TEP Articles of Amendment filed with the ACC on September 3, 2009 (Form 10-K for the year ended December 31, 2010, File No. 1-1379 –1-05924 - Exhibit 3(a)).
   
*3(b) Bylaws of TEP, as amended as of August 31, 200912, 2015 (Form 10-Q for the quarter ended September 30, 2009,2015, File No. 13739 –1-05924 - Exhibit 3.1)3).
   
*4(a)(1)3(c) Loan Agreement,Amendment to Articles of Incorporation of UNS Energy Corporation, creating series of Limited Voting Junior Preferred Stock (Form 8-K dated as of October 1, 1982, between the Pima County Authority and TEP relating to Floating Rate Monthly Demand Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Irvington Project). (Form 10-Q for the quarter ended September 30, 1982,August 12, 2015, File No. 1-5924 —1-05924 - Exhibit 4(a)).
*4(a)(2)Indenture of Trust, dated as of October 1, 1982, between the Pima County Authority and Morgan Guaranty authorizing Floating Rate Monthly Demand Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Irvington Project). (Form 10-Q for the quarter ended September 30, 1982, File No. 1-5924 — Exhibit 4(b)).
*4(a)(3)First Supplemental Loan Agreement, dated as of March 31, 1992, between the Pima County Authority and TEP relating to Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Irvington Project). (Form S-4, Registration No. 33-52860 — Exhibit 4(h)(3)).
*4(a)(4)First Supplemental Indenture of Trust, dated as of March 31, 1992, between the Pima County Authority and Morgan Guaranty relating to Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Irvington Project). (Form S-4, Registration No. 33-52860 — Exhibit 4(h)(4)).
*4(b)(1)Loan Agreement, dated as of December 1, 1982, between the Pima County Authority and TEP relating to Floating Rate Monthly Demand Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Projects). (Form 10-K for the year ended December 31, 1982, File No. 1-5924 — Exhibit 4(k)(1)).
*4(b)(2)Indenture of Trust dated as of December 1, 1982, between the Pima County Authority and Morgan Guaranty authorizing Floating Rate Monthly Demand Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Projects). (Form 10-K for the year ended December 31, 1982, File No. 1-5924 — Exhibit 4(k)(2)).

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*4(b)(3)First Supplemental Loan Agreement, dated as of March 31, 1992, between the Pima County Authority and TEP relating to Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Projects). (Form S-4, Registration No. 33-52860 — Exhibit 4(i)(3)).
*4(b)(4)First Supplemental Indenture of Trust, dated as of March 31, 1992, between the Pima County Authority and Morgan Guaranty relating to Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric Power Company Projects). (Form S-4, Registration No. 33-52860 — Exhibit 4(i)(4))3.2).
   
*4(c)(1) Indenture of Trust, dated as of March 1, 2008, between The Industrial Development Authority of the County of Pima and U.S. Bank Trust National Association authorizing Industrial Development Revenue Bonds, 2008 Series A (Tucson Electric Power Company Project). (Form 8-K dated March 19, 2008, File Nos. 1-5924 and 1-13739 —No. 1-05924 - Exhibit 4(a)).
   
*4(c)(2) Loan Agreement, dated as of March 1, 2008, between the Industrial Development Authority of the County of Pima and TEP relating to Industrial Development Revenue Bonds, 2008 Series A (Tucson Electric Power Company Project). (Form 8-K dated March 19, 2008, File Nos. 1-5924 and 1-13739 —No. 1-05924 - Exhibit 4(b)).
   
*4(d)(1) Indenture of Trust, dated as of June 1, 2008, between The Industrial Development Authority of the County of Pima and U.S. Bank Trust National Association authorizing Industrial Development Revenue Bonds, 2008 Series B (Tucson Electric Power Company Project). (Form 8-K dated June 25, 2008, File Nos. 1-5924 and 1-13739 —No. 1-05924 - Exhibit 4(a)).
   
*4(d)(2) Loan Agreement, dated as of June 1, 2008, between The Industrial Development Authority of the County of Pima and TEP relating to Industrial Development Revenue Bonds, 2008 Series B (Tucson Electric Power Company Project). (Form 8-K dated June 25, 2008, File Nos. 1-5924 and 1-13739 —No. 1-05924 - Exhibit 4(b)).
   
*4(e)(1) Indenture of Trust, dated as of October 1, 2009, between The Industrial Development Authority of the County of Pima and U.S. Bank Trust National Association authorizing Pollution Control Revenue Bonds, 2009 Series A (Tucson Electric Power Company Navajo Project). (Form 8-K dated October 13, 2009, File No. 1-13739-1-05924 - Exhibit 4(A)).
   
*4(e)(2) Loan Agreement, dated as of October 1, 2009, between The Industrial Development Authority of the County of Pima and TEP relating to Pollution Control Revenue Bonds, 2009 Series A (Tucson Electric Power Company San Juan Project). (Form 8-K dated October 13, 2009, File No. 1-13739-1-05924 - Exhibit 4(B)).
   
*4(f)(1) Indenture of Trust, dated as of October 1, 2009, between Coconino County, Arizona Pollution Control Corporation and U.S. Bank Trust National Association authorizing Pollution Control Revenue Bonds, 2009 Series A (Tucson Electric Power Company Navajo Project). (Form 8-K dated October 13, 2009, File No. 1-13739-1-05924 - Exhibit 4(C)).

119




   
*4(f)(2) Loan Agreement, dated as of October 1, 2009, between Coconino County, Arizona Pollution Control Corporation and TEP relating to Pollution Control Revenue Bonds, 2009 Series A (Tucson Electric Power Company Navajo Project). (Form 8-K dated October 13, 2009, File No. 1-13739-1-05924 - Exhibit 4(D)).
   
*4(g)(1) Indenture of Trust, dated as of October 1, 2010, between the Industrial Development Authority of the County of Pima and U.S. Bank Trust National Association, authorizing Industrial Development Revenue Bonds, 2010 Series A (Tucson Electric Power Company Project). (Form 8-K dated October 8, 2010, File No. 1-137391-05924 Exhibit 4(a)).
   
*4(g)(2) Loan Agreement, dated as of October 1, 2010, between the Industrial Development Authority of the County of Pima and TEP, relating to Industrial Development Revenue Bonds, 2010 Series A (Tucson Electric Power Company Project). (Form 8-K dated October 8, 2010, File No. 1-137391-05924 - Exhibit 4(b)).
   

127




*4(h)(1) Indenture of Trust, dated as of December 1, 2010, between the Coconino County, Arizona Pollution Control Corporation and U.S. Bank Trust National Association authorizing Pollution Control Bonds, 2010 Series A (Tucson Electric Power Company Navajo Project). (Form 8-K dated December 17, 2010, File No. 1-13739,1-05924 - Exhibit 4(c)).
   
*4(h)(2) Loan Agreement, dated as of December 1, 2010, between the Coconino County, Arizona Pollution Control Corporation and TEP relating to Pollution Control Bonds, 2010 Series A (Tucson Electric Power Company Navajo Project). (Form 8-K dated December 17, 2010, File No. 1-13739,1-05924 - Exhibit 4(d)).
   
*4(i)(1) Indenture of Trust, dated as of March 1, 2012, between The Industrial Development Authority of the County of Apache and U.S. Bank Trust National Association, authorizing Pollution Control Revenue Bonds, 2012 Series A (Tucson Electric Power Company Project). (Form 8-K dated March 21, 2012, File No. 1-13739,1-05924 - Exhibit 4(a)).
   
*4(i)(2) Loan Agreement, dated as of March 1, 2012, between The Industrial Development Authority of the County of Apache and TEP, relating to Pollution Control Revenue Bonds, 2012 Series A (Tucson Electric Power Company Project). (Form 8-K dated March 21, 2012, File No. 1-13739,1-05924 - Exhibit 4(b)).
   
*4(j)(1) Indenture of Trust, dated as of June 1, 2012, between The Industrial Development Authority of the County of Pima and U.S. Bank Trust National Association, authorizing Industrial Development Revenue Bonds, 2012 Series A (Tucson Electric Power Company Project). (Form 8-K dated June 21, 2012, File No. 1-13739,1-05924 - Exhibit 4(a)).
   
*4(j)(2) Loan Agreement, dated as of June 1, 2012, between The Industrial Development Authority of the County of Pima and TEP, relating to Industrial Development Revenue Bonds, 2012 Series A (Tucson Electric Power Company Project). (Form 8-K dated June 21, 2012, File No. 1-13739,1-05924 - Exhibit 4(b)).
   
*4(k)(1) Indenture of Trust, dated as of March 1, 2013, between The Industrial Development Authority of the County of Pima and U.S. Bank Trust National Association, authorizing Industrial Development Revenue Bonds, 2013 Series A (Tucson Electric Power Company Project). (Form 8-K dated March 14, 2013, File No. 1-13739,1-05924 - Exhibit 4(a)).
   
*4(k)(2) Loan Agreement, dated as of March 1, 2013, between The Industrial Development Authority of the County of Pima and TEP, relating to Industrial Development Revenue Bonds, 2013 Series A (Tucson Electric Power Company Project). (Form 8-K dated March 14, 2013, File No. 1-13739,1-05924 - Exhibit 4(b)).
   
*4(l)(1) Indenture of Trust, dated as of November 1, 2013, between The Industrial Development Authority of the County of Apache and U.S. Bank Trust National Association, authorizing Industrial Development Revenue Bonds, 2013 Series A (Tucson Electric Power Company Springerville Project). (Form 8-K dated November 14, 2013, File No. 1-137391-05924 - Exhibit 4(a)).
   

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*4(l)(2) Loan Agreement, dated as of November 1, 2013, between The Industrial Development Authority of the County of Apache and Tucson Electric Power Company, relating to Industrial Development Revenue Bonds, 2013 Series A (Tucson Electric Power Company Springerville Project). (Form 8-K dated November 14, 2013, File No. 1-137391-05924 - Exhibit 4(b)).
   
*4(l)(3) Lender Rate Mode Covenants Agreement, dated as of November 1, 2013, between Tucson Electric Power Company and STI Institutional & Government, Inc. (Form 8-K dated November 14, 2013, File No. 1-137391-05924 - Exhibit 4(c)).
*4(l)(4)Amendment, dated May 26, 2015, between Tucson Electric Power Company, STI Institutional & Government, Inc., and Branch Banking and Trust Company, to Lender Rate Made Covenants Agreement, dated November 1, 2013 (Form 10-Q for the quarter ended June 30, 2015, File No. 1-05924 - Exhibit 4).
   
*4(m)(1) Indenture, dated November 1, 2011, between Tucson Electric Power Company and U.S. Bank National Association, as trustee, authorizing unsecured Notes (Form 8-K dated November 8, 2011, File 1-13739 —1-05924 - Exhibit 4.1).
   
*4(m)(2) Officers Certificate, dated November 8, 2011, authorizing 5.15% Notes due 2021. (Form 8-K dated November 8, 2011, File No. 1-137391-05924 - Exhibit 4.2).

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*4(m)(3) Officers Certificate, dated September 14, 2012, authorizing 3.85% Notes due 2023. (Form 8-K dated September 14, 2012, File No. 1-137391-05924 - Exhibit 4.1).
   
*4(n)(1)4(m)(4) Second Amended and Restated Credit Agreement,Officer's Certificate, dated as of November 9, 2010, among Tucson Electric Power Company, Union Bank, N.A., as Administrative Agent, and a group of lenders.March 10, 2014, authorizing 5.00% Senior Notes due 2044 (Form 8-K dated November 15, 2010,March 10, 2014, File No. 1-13739,1-05924 - Exhibit 4.3)4.1).
   
*4(n)(2)4(m)(5) Amendment No. 1 to Second Amended and Restated Credit Agreement,Officer's Certificate, dated as of November 18, 2011, among Tucson Electric Power Company, Union Bank, N.A., as Administrative Agent, and a group of lenders.February 27, 2015, authorizing 3.05% Senior Notes due 2025 (Form 10-K for the year ended December 31, 2011,8-K dated February 27, 2015, File No. 1-13739,1-05924 - Exhibit 4(o)(2)4(a)).
   
*4(o)(1) Reimbursement Agreement, dated as of December 14, 2010, among TEP, as Borrower, the financial institutions from time to time, parties thereto and JPMorgan Chase Bank, N.A., as Administrative Agent and as Issuing Bank. (Form 8-K dated December 17, 2010, File No. 1-13739,1-05924 - Exhibit 4(a)).
   
*4(o)(2) Amendment No. 1 to Reimbursement Agreement, dated as of February 11, 2014 among TEP, as Borrower, the financial institutions from time to time, parties thereto and JPMorgan Chase Bank, N.A., as Administrative Agent and as Issuing Bank (Form 10-K for the year ended December 31, 2013, File No. 1-137391-05924 - Exhibit 4(t)(2)).
   
*4(p)4(r)(1) Credit Agreement, dated as of December 2, 2014,October 15, 2015, among Tucson Electric Power Company, MUFG Union Bank, N.A., as Administrative Agent, and a group of lenders (Form 8-K dated December 2, 2014,October 15, 2015, File No. 1-05924 - Exhibit 4(a))
*10(a)(1)Lease Agreements, dated as of December 1, 1984, between Valencia and United States Trust Company of New York, as Trustee, and Thomas B. Zakrzewski, as Co-Trustee, as amended and supplemented. (Form 10-K for the year ended December 31, 1984, File No. 1-5924 — Exhibit 10(d)(1))4.1).
   
*10(a)(2)Guaranty and Agreements, dated as of December 1, 1984, between TEP and United States Trust Company of New York, as Trustee, and Thomas B. Zakrzewski, as Co-Trustee. (Form 10-K for the year ended December 31, 1984, File No. 1-5924 — Exhibit 10(d)(2)).
*10(a)(3)General Indemnity Agreements, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors; General Foods Credit Corporation, Harvey Hubbell Financial, Inc. and J.C. Penney Company, Inc. as Owner Participants; United States Trust Company of New York, as Owner Trustee; Teachers Insurance and Annuity Association of America as Loan Participant; and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for the year ended December 31, 1984, File No. 1-5924 — Exhibit 10(d)(3)).
*10(a)(4)Tax Indemnity Agreements, dated as of December 1, 1984, between General Foods Credit Corporation, Harvey Hubbell Financial, Inc. and J.C. Penney Company, Inc., each as Beneficiary under a separate Trust Agreement dated December 1, 1984, with United States Trust of New York as Owner Trustee, and Thomas B. Zakrzewski as Co-Trustee, Lessor, and Valencia, Lessee, and TEP, Indemnitors. (Form 10-K for the year ended December 31, 1984, File No. 1-5924 — Exhibit 10(d)(4)).
*10(a)(5)Amendment No. 1, dated December 31, 1984, to the Lease Agreements, dated December 1, 1984, between Valencia and United States Trust Company of New York, as Owner Trustee, and Thomas B. Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(5)).
*10(a)(6)Amendment No. 2, dated April 1, 1985, to the Lease Agreements, dated December 1, 1984, between Valencia and United States Trust Company of New York, as Owner Trustee, and Thomas B. Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(6)).

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*10(a)(7)Amendment No. 3 dated August 1, 1985, to the Lease Agreements, dated December 1, 1984, between Valencia and United States Trust Company of New York, as Owner Trustee, and Thomas Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(7)).
*10(a)(8)Amendment No. 4, dated June 1, 1986, to the Lease Agreement, dated December 1, 1984, between Valencia and United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee, under a Trust Agreement dated as of December 1, 1984, with General Foods Credit Corporation as Owner Participant. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(8)).
*10(a)(9)Amendment No. 4, dated June 1, 1986, to the Lease Agreement, dated December 1, 1984, between Valencia and United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee, under a Trust Agreement dated as of December 1, 1984, with J.C. Penney Company, Inc. as Owner Participant. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(9)).
*10(a)(10)Amendment No. 4, dated June 1, 1986, to the Lease Agreement, dated December 1, 1984, between Valencia and United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee, under a Trust Agreement dated as of December 1, 1984, with Harvey Hubbell Financial Inc. as Owner Participant. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(10)).
*10(a)(11)Lease Amendment No. 5 and Supplement No. 2, to the Lease Agreement, dated July 1, 1986, between Valencia, United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee and J.C. Penney as Owner Participant. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(11)).
*10(a)(12)Lease Amendment No. 5, to the Lease Agreement, dated June 1, 1987, between Valencia, United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee and General Foods Credit Corporation as Owner Participant. (Form 10-K for the year ended December 31, 1988, File No. 1-5924 — Exhibit 10(f)(12)).
*10(a)(13)Lease Amendment No. 5, to the Lease Agreement, dated June 1, 1987, between Valencia, United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee and Harvey Hubbell Financial Inc. as Owner Participant. (Form 10-K for the year ended December 31, 1988, File No. 1-5924 — Exhibit 10(f)(13)).
*10(a)(14)Lease Amendment No. 6, to the Lease Agreement, dated June 1, 1987, between Valencia, United States Trust Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-Trustee and J.C. Penney Company, Inc. as Owner Participant. (Form 10-K for the year ended December 31, 1988, File No. 1-5924 — Exhibit 10(f)(14)).
*10(a)(15)Lease Supplement No. 1, dated December 31, 1984, to Lease Agreements, dated December 1, 1984, between Valencia, as Lessee and United States Trust Company of New York and Thomas B. Zakrzewski, as Owner Trustee and Co-Trustee, respectively (document filed relates to General Foods Credit Corporation; documents relating to Harvey Hubbell Financial, Inc. and JC Penney Company, Inc. are not filed but are substantially similar). (Form S-4 Registration No. 33-52860 — Exhibit 10(f)(15)).
*10(a)(16)Amendment No. 1, dated June 1, 1986, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, General Foods Credit Corporation, as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(12)).
*10(a)(17)Amendment No. 1, dated June 1, 1986, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, J.C. Penney Company, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(13)).

130




*10(a)(18)Amendment No. 1, dated June 1, 1986, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, Harvey Hubbell Financial, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(14)).
*10(a)(19)Amendment No. 2, dated as of July 1, 1986, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, J.C. Penney Company, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form S-4, Registration No. 33-52860 — Exhibit 10(f)(19)).
*10(a)(20)Amendment No. 2, dated as of June 1, 1987, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, General Foods Credit Corporation, as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form S-4, Registration No. 33-52860 —Exhibit 10(f)(20)).
*10(a)(21)Amendment No. 2, dated as of June 1, 1987, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, Harvey Hubbell Financial, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form S-4, Registration No. 33-52860 — Exhibit 10(f)(21)).
*10(a)(22)Amendment No. 3, dated as of June 1, 1987, to the General Indemnity Agreement, dated as of December 1, 1984, between Valencia and TEP, as Indemnitors, J.C. Penney Company, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form S-4, Registration No. 33-52860 — Exhibit 10(f)(22)).
*10(a)(23)Supplemental Tax Indemnity Agreement, dated July 1, 1986, between J.C. Penney Company, Inc., as Owner Participant, and Valencia and TEP, as Indemnitors. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(15)).
*10(a)(24)Supplemental General Indemnity Agreement, dated as of July 1, 1986, among Valencia and TEP, as Indemnitors, J.C. Penney Company, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for the year ended December 31, 1986, File No. 1-5924 — Exhibit 10(e)(16)).
*10(a)(25)Amendment No. 1, dated as of June 1, 1987, to the Supplemental General Indemnity Agreement, dated as of July 1, 1986, among Valencia and TEP, as Indemnitors, J.C. Penney Company, Inc., as Owner Participant, United States Trust Company of New York, as Owner Trustee, Teachers Insurance and Annuity Association of America, as Loan Participant, and Marine Midland Bank, N.A., as Indenture Trustee. (Form S-4, Registration No. 33-52860 — Exhibit 10(f)(25)).
*10(a)(26)Valencia Agreement, dated as of June 30, 1992, among TEP, as Guarantor, Valencia, as Lessee, Teachers Insurance and Annuity Association of America, as Loan Participant, Marine Midland Bank, N.A., as Indenture Trustee, United States Trust Company of New York, as Owner Trustee, and Thomas B. Zakrzewski, as Co-Trustee, and the Owner Participants named therein relating to the Restructuring of Valencia’s lease of the coal-handling facilities at the Springerville Generating Station. (Form S-4, Registration No. 33-52860 — Exhibit 10(f)(26)).
*10(a)(27)Amendment, dated as of December 15, 1992, to the Lease Agreements, dated December 1, 1984, between Valencia, as Lessee, and United States Trust Company of New York, as Owner Trustee, and Thomas B. Zakrzewski, as Co-Trustee. (Form S-1, Registration No. 33-55732 — Exhibit 10(f)(27)).

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*10(b)(1) Lease Agreements, dated as of December 1, 1985, between TEP and San Carlos Resources Inc. (San Carlos) (a wholly-owned subsidiary of the Registrant) jointly and severally, as Lessee, and Wilmington Trust Company, as Trustee, as amended and supplemented. (Form 10-K for the year ended December 31, 1985, File No. 1-5924 —1-05924 - Exhibit 10(f)(1)).
   
*10(b)(2) Tax Indemnity Agreements, dated as of December 1, 1985, between Philip Morris Credit Corporation, IBM Credit Financing Corporation and Emerson Finance Co., each as beneficiary under a separate trust agreement, dated as of December 1, 1985, with Wilmington Trust Company, as Owner Trustee, and William J. Wade, as Co-Trustee, and TEP and San Carlos, as Lessee. (Form 10-K for the year ended December 31, 1985, File No. 1-5924 —1-05924 - Exhibit 10(f)(2)).
   

121




*10(b)(3) Participation Agreement, dated as of December 1, 1985, among TEP and San Carlos as Lessee, Philip Morris Credit Corporation, IBM Credit Financing Corporation, and Emerson Finance Co. as Owner Participants, Wilmington Trust Company as Owner Trustee, The Sumitomo Bank, Limited, New York Branch, as Loan Participant, and Bankers Trust Company, as Indenture Trustee. (Form 10-K for the year ended December 31, 1985, File No. 1-5924 —1-05924 - Exhibit 10(f)(3)).
   
*10(b)(4) Restructuring Commitment Agreement, dated as of June 30, 1992, among TEP and San Carlos, jointly and severally, as Lessee, Philip Morris Credit Corporation, IBM Credit Financing Corporation and Emerson Capital Funding, William J. Wade, as Owner Trustee and Co-Trustee, respectively, The Sumitomo Bank, Limited, New York Branch, as Loan Participant and United States Trust Company of New York, as Indenture Trustee. (Form S-4, Registration No. 33-52860 - Exhibit 10(g)(4)).
   
*10(b)(5) Lease Supplement No.1, dated December 31, 1985, to Lease Agreements, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee Trustee and Co-Trustee, respectively (document filed relates to Philip Morris Credit Corporation; documents relating to IBM Credit Financing Corporation and Emerson Financing Co. are not filed but are substantially similar). (Form S-4, Registration No. 33-52860 - Exhibit 10(g)(5)).
   
*10(b)(6) Amendment No. 1, dated as of December 15, 1992, to Lease Agreements, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, as Lessor. (Form S-1, Registration No. 33-55732 - Exhibit 10(g)(6)).
   
*10(b)(7) Amendment No. 1, dated as of December 15, 1992, to Tax Indemnity Agreements, dated as of December 1, 1985, between Philip Morris Credit Corporation, IBM Credit Financing Corporation and Emerson Capital Funding Corp., as Owner Participants and TEP and San Carlos, jointly and severally, as Lessee. (Form S-1, Registration No. 33-55732 - Exhibit 10(g)(7)).
   
*10(b)(8) Amendment No. 2, dated as of December 1, 1999, to Lease Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, under a Trust Agreement with Philip Morris Capital Corporation as Owner Participant. (Form 10-K for the year ended December 31, 1999, File No. 1-5924 —1-05924 - Exhibit 10(b)(8)).
   
*10(b)(9) Amendment No. 2, dated as of December 1, 1999, to Lease Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, under a Trust Agreement with IBM Credit Financing Corporation as Owner Participant. (Form 10-K for the year ended December 31, 1999, File No. 1-5924 —1-05924 - Exhibit 10(b)(9)).
   
*10(b)(10) Amendment No. 2, dated as of December 1, 1999, to Lease Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, under a Trust Agreement with Emerson Finance Co. as Owner Participant. (Form 10-K for the year ended December 31, 1999, File No. 1-5924 —1-05924 - Exhibit 10(b)(10)).
   

132




*10(b)(11) Amendment No. 2, dated as of December 1, 1999, to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Philip Morris Capital Corporation as Owner Participant, beneficiary under a Trust Agreement dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, together as Lessor. (Form 10-K for the year ended December 31, 1999, File No. 1-5924 —1-05924 - Exhibit 10(b)(11)).
   
*10(b)(12) Amendment No. 2, dated as of December 1, 1999, to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and IBM Credit Financing Corporation as Owner Participant, beneficiary under a Trust Agreement dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, together as Lessor. (Form 10-K for the year ended December 31, 1999, File No. 1-5924 —1-05924 - Exhibit 10(b)(12)).
   

122




*10(b)(13) Amendment No. 2, dated as of December 1, 1999, to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Emerson Finance Co. as Owner Participant, beneficiary under a Trust Agreement dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, together as Lessor. (Form 10-K for the year ended December 31, 1999, File No. 1-5924 —1-05924 - Exhibit 10(b)(13)).
   
*10(b)(14) Amendment No. 3 dated as of June 1, 2003, to Lease Agreements, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, under a Trust Agreement with Philip Morris Capital Corporation as Owner Participant. (Form 10-Q for the quarter ended June 30, 2003, File No. 1-5924 –1-05924 - Exhibit 10(a)).
   
*10(b)(15) Amendment No. 3 dated as of June 1, 2003, to Lease Agreements, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, under a Trust Agreement with IBM Credit, LLC as Owner Participant. (Form 10-Q for the quarter ended June 30, 2003, File No. 1-5924 –1-05924 - Exhibit 10(b)).
   
*10(b)(16) Amendment No. 3 dated as of June 1, 2003, to Lease Agreements, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, under a Trust Agreement with Emerson Finance Co. as Owner Participant. (Form 10-Q for the quarter ended June 30, 2003, File No. 1-5924 –1-05924 - Exhibit 10(c)).
   
*10(b)(17) Amendment No. 3 dated as of June 1, 2003, to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Philip Morris Capital Corporation as Owner Participant, beneficiary under a Trust Agreement dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, together as Lessor. (Form 10-Q for the quarter ended June 30, 2003, File No. 1-5924 –1-05924 - Exhibit 10(d)).
   
*10(b)(18) Amendment No. 3 dated as of June 1, 2003, to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and IBM Credit, LLC as Owner Participant, beneficiary under a Trust Agreement dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, together as Lessor. (Form 10-Q for the quarter ended June 30, 2003, File No. 1-5924 –1-05924 - Exhibit 10(e)).
   
*10(b)(19) Amendment No. 3 dated as of June 1, 2003, to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Emerson Finance Co. as Owner Participant, beneficiary under a Trust Agreement dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, together as Lessor. (Form 10-Q for the quarter ended June 30, 2003, File No. 1-5924 –1-05924 - Exhibit 10(f)).
   
*10(b)(20) Amendment No. 4, dated as of June 1, 2006, to Lease Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee, respectively, under a Trust Agreement with Philip Morris Capital Corporation as Owner Participant. (Form 8-K dated June 12, 2006, File No. 1-5924 –1-05924 - Exhibit 10.1).
   

133




*10(b)(21) Amendment No. 4, dated as of June 1, 2006, to Lease Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee, respectively, under a Trust Agreement with Selco Service Corporation as Owner Participant. (Form 8-K dated June 12, 2006, File No. 1-5924 –1-05924 - Exhibit 10.2).
   
*10(b)(22) Amendment No. 4, dated as of June 1, 2006, to Lease Agreement, dated as of December 1, 1985, between TEP and San Carlos, jointly and severally, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee, respectively, under a Trust Agreement with Emerson Finance LLC as Owner Participant. (Form 8-K dated June 12, 2006, File No. 1-5924 –1-05924 - Exhibit 10.3).
   

123




*10(b)(23) Amendment No. 4, dated as of June 1, 2006 to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, as Lessee, and Philip Morris Capital Corporation as Owner Participant, beneficiary under a Trust Agreement, dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee, respectively, together as Lessor. (Form 8-K dated June 12, 2006, File No. 1-5924 –1-05924 - Exhibit 10.4).
   
*10(b)(24) Amendment No. 4, dated as of June 1, 2006 to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, as Lessee, and Selco Service Corporation as Owner Participant, beneficiary under a Trust Agreement, dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee, respectively, together as Lessor. (Form 8-K dated June 12, 2006, File No. 1-5924 –1-05924 - Exhibit 10.5).
   
*10(b)(25) Amendment No. 4, dated as of June 1, 2006 to Tax Indemnity Agreement, dated as of December 1, 1985, between TEP and San Carlos, as Lessee, and Emerson Finance LLC as Owner Participant, beneficiary under a Trust Agreement, dated as of December 1, 1985, with Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-trustee, respectively, together as Lessor. (Form 8-K dated June 12, 2006, File No. 1-5924 –1-05924 - Exhibit 10.6).
   
*10(c)(1) Participation Agreement, dated as of June 30, 1992, among TEP, as Lessee, various parties thereto, as Owner, Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, and LaSalle National Bank, as Indenture Trustee relating to TEP’s lease of Springerville Unit 1. (Form S-1, Registration No. 33-55732 - Exhibit 10(u)).
   
*10(c)(2) Lease Agreements, dated as of December 15, 1992, between TEP, as Lessee, and Wilmington Trust Company and William J. Wade, as Owner Trustee and Co-Trustee, respectively, as Lessor. (Form S-1, Registration No. 33-55732 - Exhibit 10(v)).
   
*10(c)(3) Tax Indemnity Agreements, dated as of December 15, 1992, between the various Owner Participants parties thereto and TEP, as Lessee. (Form S-1, Registration No. 33-55732 - Exhibit 10(w)).
   
+*10(d) UNS Energy Officer Change in Control Agreement (including a(a schedule of officers who are covered by the agreement or substantially identical agreements)agreements is filed separately), between UNS Energy and officers of the companyUNS Energy.
   
+*10(e)10(d)(1) SeveranceSchedule of Officers covered by UNS Energy Officer Change in Control Agreement between Michael J. DeConcini and Tucson Electric Power Company (Form 8-K, dated July 27, 2013, File No. 1-13739 - Exhibit 10(a))or substantially Identical Agreements.
   
+*10(f) Retention Bonus Agreement between Kevin P. Larson and UNS Energy Corporation (Form 8-K, dated November 13, 2014, File No. 1-05924 - Exhibit 10(a)).
+*10(g)UNS Energy Corporation 2015 Share Unit Plan (Form 8-K, dated February 23, 2015, File No. 1-05924-Exhibit 10(a)).
   
12 Computation of Ratio of Earnings to Fixed Charges.
   
21 Subsidiaries of the Registrant.
   
24 Power of Attorney.
   

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31(a) Certification Pursuant to Section 302 of the Sarbanes-Oxley Act, by David G. Hutchens.
   
31(b) Certification Pursuant to Section 302 of the Sarbanes-Oxley Act, by Kevin P. Larson.
   
**32 Statements of Corporate Officers (pursuant to Section 906 of the Sarbanes-Oxley Act of 2002).

124




   
101.INS XBRL Instance Document
   
101.SCH XBRL Taxonomy Extension Schema Document
   
101.CAL XBRL Taxonomy Extension Calculation Linkbase Document
   
101.LAB XBRL Taxonomy Extension Label Linkbase Document
   
101.PRE XBRL Taxonomy Extension Presentation Linkbase Document
   
101.DEF XBRL Taxonomy Extension Definition Linkbase Document
   
*Previously filed as indicated and incorporated herein by reference.
+Management contracts or compensatory plans or arrangements required to be filed as exhibits to this Form 10-K by Item 601(b)(10)(iii) of Regulation S-K.
**Pursuant to Item 601(b)(32)(ii) of Regulation S-K, this certificate is not being “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.


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