This is a list of electricity-generating power stations in the U.S. state of Arizona, sorted by type and name. In 2024, Arizona had a net summer capacity of 32.9 GW through all of its power plants, and a net generation of 116,027 GWh.[1] The electrical energy generation mix in 2025 was 45% natural gas, 26.7% nuclear, 13.3% solar, 7.9% coal, 4.2% hydroelectric, 2.7% wind, and 0.2% biomass. Small-scale solar, including customer-owned photovoltaic panels, delivered an additional net 5,785 GWh to the state's electrical grid. This compares as about one-third the amount generated by Arizona's utility-scale solar plants.[2]
Arizona's Palo Verde Nuclear Generating Station located to the west of Phoenix is the nation's largest facility by annual energy production, and is the second largest facility by power capacity after Washington state's Grand Coulee Dam hydroelectric station. The electricity generated by utility- and small-scale solar together surpassed the amount from all of Arizona's hydroelectric facilities for the first time in 2017.[3]
Nuclear power stations
| Name | County | Coordinates | Capacity (MW) | Year opened | Ref |
|---|---|---|---|---|---|
| Palo Verde Nuclear Generating Station | Maricopa County | 33.3881°N 112.8617°W | 3,937 | 1986 (Unit 1- 1,311 MW) 1986 (Unit 2- 1,314 MW) 1988 (Unit 3- 1,312 MW) |
Fossil-fuel power stations
Data from the U.S. Energy Information Administration serves as a general reference.[4]
Coal
| Name | County | Coordinates | Capacity (MW) | Year opened | Scheduled retirement | Refs |
|---|---|---|---|---|---|---|
| Apache Generating Station | Cochise County | 32.0603°N 109.8931°W | 204 (coal only) | 1964 (Unit 1- 82MW) 1979 (Unit 2- 204MW) 1979 (Unit 3- 204MW) | 2018 (Unit 1- ng convert) 2018 (Unit 2- ng convert) 2027 (Unit 3- ng convert) | [5][6] |
| Coronado Generating Station | Apache County | 34.5789°N 109.2708°W | 822 | 1979 (Unit 1- 411MW) 1980 (Unit 2- 411MW) | 2029 (ng convert) | [7][8][9] |
| Springerville Generating Station | Apache County | 34.3186°N 109.1639°W | 1,766 | 1985 (Unit 1- 425MW) 1990 (Unit 2- 425MW) 2006 (Unit 3- 458MW) 2009 (Unit 4- 458MW) | 2027 (Unit 1) 2030 (Unit 2 - ng convert) 2031 (Unit 3) 2029 (Unit 4) | [10][11][12][13][14][15] |
| Name | County | Coordinates | Capacity (MW) | Year opened | Year closed | Refs |
|---|---|---|---|---|---|---|
| Navajo Generating Station | Coconino County | 36.9047°N 111.3886°W | 2,409 | 1974 (Unit 1- 803MW) 1975 (Unit 2- 803MW) 1976 (Unit 3- 803MW) | 2019 | [16] |
| Cholla Power Plant | Navajo County | 34.9394°N 110.3033°W | 426 | 1962 (Unit 1- 114MW) 1978 (Unit 2- 289MW) 1980 (Unit 3- 312MW) 1981 (Unit 4- 414MW) | 2025 (Unit 1) 2015 (Unit 2 closed) 2025 (Unit 3) 2020 (Unit 4 closed) | [17][18] |
Natural gas
| Name | County | Coordinates | Capacity (MW) | Generation type | Year opened | Refs |
|---|---|---|---|---|---|---|
| Agua Fria Generating Station | Maricopa County | 33.5561°N 112.2153°W | 626 | Steam turbine (x3) Simple cycle (x3) | 1957/1958/1961 (407MW) 1974/1975 (219MW) | [19] |
| Apache Generating Station | Cochise County | 32.0603°N 109.8931°W | 285 (gas only) | Steam turbine (x2) | 2018 (convert from coal) | [5] |
| Arlington Valley Plant | Maricopa County | 33.3417°N 112.8897°W | 69 | 2x1 combined cycle | 2002 | [20][21] |
| Coolidge Generating Station | Pinal County | 32.9174°N 111.5033°W | 575 | Simple cycle (x12) | 2011 | [22] |
| Desert Basin Power Plant | Pinal County | 32.9042°N 111.7889°W | 577 | 2x1 combined cycle | 2001 | [23] |
| Demoss Petrie Power Plant | Pinal County | 32.2523°N 110.9921°W | 85 | Simple cycle | 2001 | |
| Gila River Generating Station | Maricopa County | 32.975°N 112.6944°W | 2,200 | 2x1 combined cycle (x4) | 2003 | |
| Griffith Energy | Mohave County | 35.054°N 114.1333°W | 654 | 2x1 combined cycle | 2002 | [20] |
| Harquahala Generating Station | Maricopa County | 33.476°N 113.1134°W | 1092 | 1x1 combined cycle (x3) | 2004 | [20] |
| H. Wilson Sundt Generating Station | Pima County | 32.16°N 110.9047°W | 502 | Steam turbine (x2) Simple cycle (x2) Reciprocating engine (x5) | 1962/1967 (360MW) 1972 (48MW) 2019 (94MW) | [24] |
| Kyrene Power Plant | Maricopa County | 33.3556°N 111.9353°W | 525 | Steam turbine (x2) Simple cycle (x3) 1x1 combined cycle | 1952/1954 (106MW) 1971/1973 (165MW) 2002 (254MW) | [25] |
| Mesquite Power Plant | Maricopa County | 33.345°N 112.8642°W | 1,250 | 2x1 combined cycle (x2) | 2003 | [20] |
| North Loop Power Plant | Pima County | 32.401°N 111.1262°W | 108 | Simple cycle (x4) | 1972/2001 | |
| Ocotillo Power Plant | Maricopa County | 33.4225°N 111.9122°W | 916 | Simple cycle (x7) | 1972/1973/2019 | [16][26] |
| Red Hawk Power Station | Maricopa County | 33.3346°N 112.8406°W | 1,060 | 2x1 combined cycle (x2) | 2002 | [16][20] |
| Saguaro Power Plant | Pinal County | 32.5517°N 111.3°W | 184 | Simple cycle (x3) | 1972/1973/2002 | [16] |
| Santan Power Plant | Maricopa County | 33.3325°N 111.7503°W | 1,235 | Combined cycle (x4) 2x1 combined cycle 1x1 combined cycle | 1974/1975 (376MW) 2005 (582MW) 2006 (277MW) | [20] |
| Sundance Generating Station | Pinal County | 32.9285°N 111.5899°W | 450 | Simple cycle (x10) | 2002 | [16][27] |
| Valencia Power Plant | Santa Cruz County | 31.3635°N 110.9313°W | 108 | Simple cycle (x4) | 1989/2006 | |
| West Phoenix Power Plant | Maricopa County | 33.4417°N 112.1583°W | 920 | Simple cycle (x2) Combined cycle (x3) 2x1 combined cycle 1x1 combined cycle | 1972/1973 (100MW) 1976 (255MW) 2001 (107MW) 2003 (458MW) | [16] |
| Yucca Power Plant | Yuma County | 32.7214°N 114.7106°W | 250 | Steam turbine Simple cycle (x5) | 1959 (75MW) 1971/1973/2008 (176MW) | [16][28] |
| Yuma Power Plant | Yuma County | 32.7288°N 114.6541°W | 50 | 1x1 combined cycle | 1994 | [20][29] |
Petroleum
| Name | County | Coordinates | Capacity (MW) | Generation type | Year opened | Refs |
|---|---|---|---|---|---|---|
| Douglas Power Plant | Cochise County | 31.3641°N 109.5538°W | 25 | Simple cycle | 1972 | [16] |
| Yucca Power Plant | Yuma County | 32.7214°N 114.7106°W | 71 | Simple cycle (x2) | 1971/1978 | [16] |
Renewable power stations
Data from the U.S. Energy Information Administration serves as a general reference.[4]
Biomass & refuse
| Name | County | Coordinates | Capacity (MW) | Fuel type | Generation type | Year opened | Refs |
|---|---|---|---|---|---|---|---|
| Glendale Energy Plant | Maricopa County | 33.5403°N 112.3064°W | 2.8 | Landfill gas | Reciprocating engine (x2) | 2010 | [30] |
| Northwest Regional Landfill | Maricopa County | 33.6819°N 112.4767°W | 3.2 | Landfill gas | Reciprocating engine (x2) | 2012 | [31] |
| Novo BioPower Plant | Navajo County | 34.5032°N 110.3350°W | 22 | Wood/ wood waste | Steam turbine | 2008 | [32] |
| Western Renewable Energy | Apache County | 34.0930°N 109.2900°W | 2.5 | Wood/ wood waste | Steam turbine | 2004 | [33] |
Hydroelectric dams
| Name | County | Coordinates | Capacity (MW) | Year opened | Refs |
|---|---|---|---|---|---|
| Arizona Falls | Maricopa County | 33.4899°N 111.9589°W | 0.75 | 2003 | [25] |
| C.C. Cragin Dam (Blue Ridge) | Coconino County | 34°33′16″N 111°11′50″W | 1965 | [25] | |
| Childs-Irving Hydro | Yavapai County | 34.3511°N 111.7006°W | 4.2 | 1916 | closed |
| Coolidge Dam | Gila County | 33.1747°N 110.5279°W | 10 | 1935 | closed |
| Crosscut Hydro | Maricopa County | 33.4394°N 111.9461°W | 3.0 | 1939 | [25] |
| Davis Dam | Mohave County | 35.197°N 114.5707°W | 251 | 1951 | |
| Glen Canyon Dam | Coconino County | 36.9366°N 111.4839°W | 1,320 | 1964-1966 | [34] |
| Headgate Rock | La Paz County | 34.1683°N 114.2774°W | 19.5 | 1993 | |
| Hoover Dam | Mohave County | 36.0155°N 114.738°W | 2,080 | 1936-1943/ 1952 | |
| Horse Mesa Dam | Maricopa County | 33.5907°N 111.344°W | 129 | 1927 | [25] |
| Mormon Flat Dam | Maricopa County | 33.5536°N 111.4431°W | 60 | 1926 | [25] |
| Parker Dam | La Paz County | 34.2953°N 114.1402°W | 120 | 1938 | |
| South Consolidated Hydro | Maricopa County | 33.4665°N 111.7811°W | 1.4 | 1981 | [25] |
| Stewart Mountain Dam | Maricopa County | 33.5661°N 111.536°W | 13 | 1930 | [25] |
| Theodore Roosevelt Dam | Gila/Maricopa | 33.6711°N 111.1618°W | 36 | 1973 | [25] |
Generating capacity at Hoover Dam is equally split between Arizona and Nevada.[4] Its total capacity was derated to 1,596 MW in June 2014 due to persistently low water storage levels and projected further declines.[35][36]
Solar thermal plants
| Name | County | Coordinates | Capacity (MW) | Year opened | Ref |
|---|---|---|---|---|---|
| Solana Generating Station | Maricopa County | 32.9223°N 112.9559°W | 280 | 2013 | [37] |
Solar photovoltaic plants
Wind farms
| Name | County | Coordinates | Capacity (MW) | Year opened | Refs |
|---|---|---|---|---|---|
| Dry Lake Wind Power Project | Navajo County | 34.6596°N 110.2842°W | 127 | August 2009 | [74] |
| Kingman 1 | Mohave County | 35.1458°N 114.0675°W | 10 | September 2011 | [75] |
| Perrin Ranch Wind | Coconino County | 35.4156°N 112.2711°W | 99 | January 2012 | [76] |
| Red Horse 2 | Cochise County | 32.2861°N 110.0881°W | 30 | August 2015 | [77] |
| White Hills Wind | Mohave County | 35.47326°N 114.2892°W | 350 | 2021 | [78] |
| Babbitt Ranch Energy Center | Coconino County | 35.6425°N 112.0932°W | 161 | June 2024 | [79][80] |
Storage power stations
Data from the U.S. Energy Information Administration serves as a general reference.[4]
Battery storage
| Name | County | Coordinates | Capacity (MWh / MW) | Year opened | Refs |
|---|---|---|---|---|---|
| McFarland Storage | Yuma County | 32.9376°N 113.4708°W | 1140 / 435 | 2025 | [81] |
| Storey Solar / BESS | Pinal County | 32.88297°N 111.50855°W | 88 | 2023 | [66] |
| Eleven Mile Solar Center BESS | Pinal County | 32.86115°N 111.58893°W | 1200 / 300 | 2024 | [82] |
| Agua Fria Generating Station | Maricopa County | 33.5534°N 112.21263°W | 25 | 2021 | [83] |
| Paloma Solar Hybrid | Maricopa County | 33.02481°N 112.65867°W | 17 | April 2023 | [84] |
| AES Gilbert ES | Maricopa County | 33.4468°N 111.9563°W | 10 | 2019 | [85] |
| Iron Horse BESS Hybrid | Pima County | 32.0985°N 110.8191°W | 10 | 2017 | [86][87] |
| Pima BESS | Pima County | 32.2516°N 110.9913°W | 10 | 2017 | [87] |
| Pinal Central Hybrid ES | Pima County | 32.8757°N 111.5511°W | 10 | 2018 | [57] |
| Desert Star Hybrid | Maricopa County | 33.14512°N 112.65962°W | 10 | February 2023 | [88] |
| Punkin Center BS | Gila County | 33.8758°N 111.3136°W | 2 | 2018 | [89] |
| Sonoran Solar Energy | Maricopa County | 33.239°N 112.57154°W | 1000 / 260 | 2012 / 2024 | [90][91][92] |
| Sierra Estrella Energy Storage Facility | Maricopa County | 33.41056°N 112.31426°W | 1000 / 250 | June 2024 | [93][94] |
| Superstition Energy Storage facility | Maricopa County | 33.35891°N 111.83095°W | 90 | June 24, 2024 | [93][95] |
| Storey Solar Energy Center | Pinal County | 32.8832°N 111.5087°W | 88 | December 2023 | [66][67] |
| Papago Storage | Maricopa County | 1200 / 300 | 2025 | [96][97][98] | |
| Scatter Wash Battery Storage Comple | Maricopa County | 1020 / 255 | April 2025 | [99][100] | |
| Hyder II Hybrid | Yuma County | 33.0259°N 113.3521°W | 14 | 2013 | [71] |
| Foothills Solar Plant Hybrid | Yuma County | 32.6389°N 114.4313°W | 35 | April 2023 | [51] |
| Saint Solar Energy Center | Pinal County | 32.8643°N 111.5007°W | 100 | [101] | |
| Signal Butte Energy Storage | 250 | Mid 2026 | [102] | ||
| Flatland Energy Storage Project | Pinal County | 800 / 200 | 2025 | [103] |
Pumped storage
| Name | Location | Coordinates | Capacity (MW) | Year opened | Refs |
|---|---|---|---|---|---|
| Horse Mesa | Maricopa County | 33.5907°N 111.344°W | 119 | 1972 | [25] |
| Mormon Flat | Maricopa County | 33.5536°N 111.4431°W | 57 | 1971 | [25] |
| Waddell | Maricopa County | 33.8447°N 112.2714°W | 40 | 1993 | [104] |
Utility companies
- Arizona Electric Power Cooperative
- Arizona Public Service
- Salt River Project
- Tucson Electric Power
- UniSource Energy Services
See also
References
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