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UNS Holdco Cash Sources & Uses

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UNS Holdco Cash Sources & Uses An Historic Look at UNS Energy Tucson Electric Power & Unisource Electric Kevin Battaglia Resource Planning 1 First Power Plant downtown at 120 N. Church St. W. Congress at Church (1916) 1904 Power Plant moves to 220 W. Sixth Street 220 W. Sixth Street Generators 5 Changes in the 60’s 6 Until 1942 TEP was an electrical island, disconnected from other utilities NEVADA Davis Dam PHOENIX Tucson 1950 Demoss Petrie 100 MW 8 1950 DeMoss Petrie 100 MW Irvington Generating Station - 1958 • Eventually, there would be four gas units producing 422 MW. Later named H. Wilson Sundt Generating Station • Tucson’s population in 1958 was 230,000 • Conversion of Unit 4 to Gas was mandated by Power Plant and Industrial Fuel Use Act of 1978 (PPIFUA) 1964 Interconnection to Arizona Public Service at Saguaro PHOENIX Tucson’s population wasSaguaro (APS)309,000 TUCSON Being connected to other utilities allows sales of excess power and it provides outside support in emergencies. 1969 Four Corners Units 4 & 5 – 110MW Tucson’s population was 345,000 Participation: Southern California Edison: 48 % Arizona Public Service: 15 % Public Service Co. of New Mexico: 13 % Salt River Project: 10 % Tucson Electric Power: 7 % 1972 Palo Verde – 521 MW By 1975, management saw that slower than expected load growth and higher than forecast costs did not merit the risk of such a large project. In 1975 TEP’s interest in Palo Verde was sold. Arizona Coal Resources 14 Transmission Resources San Juan McKinley PHOENIX Greenlee Saguaro Tortolita Tucson Irvington South Vail November 2013 15 Future Expansion Requires More EHV Transmission Tucson’s population was 416,000 The 345 KV San Juan to Vail line is completed in 1973 at a cost of $89 million or about $250 million in today’s dollars. 19731973 - San - SanJuan Juan Units Units 1 & 12 & - 3402 - 340MW MW 1973197319731973 - San - - San -San JuanSan JuanJuan 1974Juan Units - NavajoUnitsUnits Units 1 & - 112 1 211 &MW &-& 3402 2 2 - - 340 -MW340 340 MW MW MW 1973 - San Juan Units 1 & 2 - 340 MW Participation: Public Service Company of NM 50% Tucson Electric Power 50% 1974 - Navajo Generating Station - 112 MW By 1985 Tucson’s population was 612,000 Participation: United States Bureau of Reclamation 24.3% Salt River Project: 21.7 % Los Angeles Dept. of Water & Power: 21.2 % Arizona Public Service: 14 % Nevada Energy 11.3% Tucson Electric Power: 7.5 % Navajo Southern Transmission 500 KV Addition Navajo Four Corners San Juan McKinley Moenkopi Cholla PHOENIX West Wing Greenlee Saguaro Tortolita Tucson Sundt South Vail 19 Springerville Generating Station 1985 – 780MW Participation: Tucson Electric Power Unit 1 1985 389 MW 14% owed 86% Leased Unit 2 1990 389 MW 100% owned Tri- State G & T Unit 3 2006 418 Mw 100% owned Salt River Project: Unit 4 2010 400 MW 100% owned 20 Springerville Transmission Navajo Four Corners San Juan NEVADA Mead Kingman McKinley Moenkopi Cholla Springerville PHOENIX West Wing Greenlee Saguaro Tucson Irvington South Vail November 2013 21 Luna Energy Facility – 2006- 190MW Participation: Tucson Electric Power 33.33% Public Service Company of New Mexico 33.33% Freeport – McMoRan Copper & Gold 33.33% 22 Where we are now? Today, TEP has over 2,300 MWs of owned Capacity from Coal, Natural Gas and Solar. We have contracted to purchase additional capacity from Wind and Solar. Navajo Four Corners San Juan NEVADA Kingman McKinley Moenkopi Cholla Yavapai Springerville Palo Verde PHOENIX West Wing Hassayampa Pinal Central Pinal West Greenlee Saguaro Tortolita Tucson Sundt Luna South Vail Tucson Population in 2013 is approximately 1 million Renewables 24 UNS-Electric Service Territories 25 UNSE Black Mountain (Kingman) – 2 LM6000 Combustion Turbines 2008 – 90 MW 26 UNSE Valencia Generating Station (Nogales) – Four Combustion Turbines - 1989 – 61 MW UNSE – Vail to Valencia Upgrade 28 UNSE – Vail to Valencia Upgrade 29 .
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