List of power stations in Arizona

Sources of Arizona utility-scale electricity generation, full-year 2023:[1]

  Natural gas (47.3%)
  Nuclear (28.2%)
  Coal (10.8%)
  Solar (6.6%)
  Hydroelectric[a] (5.3%)
  Wind (1.6%)
  Biomass (0.2%)
Arizona electricity production by type

This is a list of electricity-generating power stations in the U.S. state of Arizona, sorted by type and name. In 2021, Arizona had a net summer capacity of 27,596 MW through all of its power plants, and a net generation of 109,305 GWh.[2] The electrical energy generation mix in 2023 was 47.3% natural gas, 28.2% nuclear, 10.8% coal, 6.6% solar, 5.3% hydroelectric, 1.6% wind, and 0.2% biomass. Small-scale solar, including customer-owned photovoltaic panels, delivered an additional net 4,431 GWh to the state's electrical grid. This compares as about one-half the amount generated by Arizona's utility-scale solar plants.[1]

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]

Map all coordinates using OpenStreetMap

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Nuclear power stations

Name County Coordinates Capacity
(MW)		 Year
opened		 Ref
Palo Verde Nuclear Generating Station Maricopa County 33°23′17″N 112°51′42″W / 33.3881°N 112.8617°W / 33.3881; -112.8617 (Palo Verde) 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

Operating power plants
Name County Coordinates Capacity
(MW) 		Year
opened 		Scheduled
retirement 		Refs
Apache Generating Station Cochise County 32°03′37″N 109°53′35″W / 32.0603°N 109.8931°W / 32.0603; -109.8931 (Apache Station) 204 1964 (Unit 1- 82MW)
1979 (Unit 2- 204MW)
1979 (Unit 3- 204MW) 		2018 (Unit 1- ng convert)
2018 (Unit 2- ng convert)
TBD (Unit 3) 		[5][6]
Cholla Power Plant Navajo County 34°56′22″N 110°18′12″W / 34.9394°N 110.3033°W / 34.9394; -110.3033 (Cholla Power Plant) 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) 		[7][8]
Coronado Generating Station Apache County 34°34′44″N 109°16′15″W / 34.5789°N 109.2708°W / 34.5789; -109.2708 (Coronado Station) 822 1979 (Unit 1- 411MW)
1980 (Unit 2- 411MW) 		2032 (Unit 1)
2032 (Unit 2) 		[9][10]
Springerville Generating Station Apache County 34°19′07″N 109°09′50″W / 34.3186°N 109.1639°W / 34.3186; -109.1639 (Springerville Station) 1,766 1985 (Unit 1- 425MW)
1990 (Unit 2- 425MW)
2006 (Unit 3- 458MW)
2009 (Unit 4- 458MW) 		2027 (Unit 1)
2032 (Unit 2)
2031 (Unit 3)
TBD (Unit 4) 		[11][12][13][14]
Retired power plants
Name County Coordinates Capacity
(MW) 		Year
opened 		Year
closed 		Refs
Navajo Generating Station Coconino County 36°54′17″N 111°23′19″W / 36.9047°N 111.3886°W / 36.9047; -111.3886 (Navajo Station) 2,409 1974 (Unit 1- 803MW)
1975 (Unit 2- 803MW)
1976 (Unit 3- 803MW) 		2019 [15]

Natural gas

Name County Coordinates Capacity
(MW)		 Generation
type		 Year
opened		 Refs
Agua Fria Generating Station Maricopa County 33°33′22″N 112°12′55″W / 33.5561°N 112.2153°W / 33.5561; -112.2153 (Agua Fria) 626 Steam turbine (x3)
Simple cycle (x3)		 1957/1958/1961 (407MW)
1974/1975 (219MW)		 [16]
Apache Generating Station Cochise County 32°03′37″N 109°53′35″W / 32.0603°N 109.8931°W / 32.0603; -109.8931 (Apache) 285 Steam turbine (x2) 2018
(convert from coal)		 [5]
Arlington Valley Plant Maricopa County 33°20′30″N 112°53′23″W / 33.3417°N 112.8897°W / 33.3417; -112.8897 (Arlington Valley) 69 2x1 combined cycle 2002 [17][18]
Coolidge Generating Station Pinal County 32°55′03″N 111°30′12″W / 32.9174°N 111.5033°W / 32.9174; -111.5033 (Coolidge) 575 Simple cycle (x12) 2011 [19]
Desert Basin Power Plant Pinal County 32°54′15″N 111°47′20″W / 32.9042°N 111.7889°W / 32.9042; -111.7889 (Desert Basin) 577 2x1 combined cycle 2001 [20]
Demoss Petrie Power Plant Pinal County 32°15′08″N 110°59′32″W / 32.2523°N 110.9921°W / 32.2523; -110.9921 (Demoss Petrie) 85 Simple cycle 2001
Gila River Generating Station Maricopa County 32°58′30″N 112°41′40″W / 32.9750°N 112.6944°W / 32.9750; -112.6944 (Gila River) 2,200 2x1 combined cycle (x4) 2003
Griffith Energy Mohave County 35°03′14″N 114°08′00″W / 35.0540°N 114.1333°W / 35.0540; -114.1333 (Griffith Energy) 654 2x1 combined cycle 2002 [17]
Harquahala Generating Station Maricopa County 33°28′34″N 113°06′48″W / 33.4760°N 113.1134°W / 33.4760; -113.1134 (Harquahala) 1092 1x1 combined cycle (x3) 2004 [17]
H. Wilson Sundt Generating Station Pima County 32°09′36″N 110°54′17″W / 32.1600°N 110.9047°W / 32.1600; -110.9047 (H Wilson Sundt Station) 502 Steam turbine (x2)
Simple cycle (x2)
Reciprocating engine (x5)		 1962/1967 (360MW)
1972 (48MW)
2019 (94MW)		 [21]
Kyrene Power Plant Maricopa County 33°21′20″N 111°56′07″W / 33.3556°N 111.9353°W / 33.3556; -111.9353 (Kyrene) 525 Steam turbine (x2)
Simple cycle (x3)
1x1 combined cycle		 1952/1954 (106MW)
1971/1973 (165MW)
2002 (254MW)		 [22]
Mesquite Power Plant Maricopa County 33°20′42″N 112°51′51″W / 33.3450°N 112.8642°W / 33.3450; -112.8642 (Mesquite) 1,250 2x1 combined cycle (x2) 2003 [17]
North Loop Power Plant Pima County 32°24′04″N 111°07′34″W / 32.4010°N 111.1262°W / 32.4010; -111.1262 (North Loop) 108 Simple cycle (x4) 1972/2001
Ocotillo Power Plant Maricopa County 33°25′21″N 111°54′44″W / 33.4225°N 111.9122°W / 33.4225; -111.9122 (Ocotillo) 916 Simple cycle (x7) 1972/1973/2019 [15][23]
Red Hawk Power Station Maricopa County 33°20′05″N 112°50′26″W / 33.3346°N 112.8406°W / 33.3346; -112.8406 (Red Hawk) 1,060 2x1 combined cycle (x2) 2002 [15][17]
Saguaro Power Plant Pinal County 32°33′06″N 111°18′00″W / 32.5517°N 111.3000°W / 32.5517; -111.3000 (Saguaro) 184 Simple cycle (x3) 1972/1973/2002 [15]
Santan Power Plant Maricopa County 33°19′57″N 111°45′01″W / 33.3325°N 111.7503°W / 33.3325; -111.7503 (Santan) 1,235 Combined cycle (x4)
2x1 combined cycle
1x1 combined cycle		 1974/1975 (376MW)
2005 (582MW)
2006 (277MW)		 [17]
Sundance Generating Station Pinal County 32°55′43″N 111°35′24″W / 32.9285°N 111.5899°W / 32.9285; -111.5899 (Sundance) 450 Simple cycle (x10) 2002 [15][24]
Valencia Power Plant Santa Cruz County 31°21′49″N 110°55′53″W / 31.3635°N 110.9313°W / 31.3635; -110.9313 (Valencia) 108 Simple cycle (x4) 1989/2006
West Phoenix Power Plant Maricopa County 33°26′30″N 112°09′30″W / 33.4417°N 112.1583°W / 33.4417; -112.1583 (West Phoenix) 920 Simple cycle (x2)
Combined cycle (x3)
2x1 combined cycle
1x1 combined cycle		 1972/1973 (100MW)
1976 (255MW)
2001 (107MW)
2003 (458MW)		 [15]
Yucca Power Plant Yuma County 32°43′17″N 114°42′38″W / 32.7214°N 114.7106°W / 32.7214; -114.7106 (Yucca) 250 Steam turbine
Simple cycle (x5)		 1959 (75MW)
1971/1973/2008 (176MW)		 [15][25]
Yuma Power Plant Yuma County 32°43′44″N 114°39′15″W / 32.7288°N 114.6541°W / 32.7288; -114.6541 (Yuma) 50 1x1 combined cycle 1994 [17][26]

Petroleum

Name County Coordinates Capacity
(MW)		 Generation
type		 Year
opened		 Refs
Douglas Power Plant Cochise County 31°21′51″N 109°33′14″W / 31.3641°N 109.5538°W / 31.3641; -109.5538 (Douglas) 25 Simple cycle 1972 [15]
Yucca Power Plant Yuma County 32°43′17″N 114°42′38″W / 32.7214°N 114.7106°W / 32.7214; -114.7106 (Yucca) 71 Simple cycle (x2) 1971/1978 [15]

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°32′25″N 112°18′23″W / 33.5403°N 112.3064°W / 33.5403; -112.3064 (Glendale Landfill) 2.8 Landfill gas Reciprocating engine (x2) 2010 [27]
Northwest Regional Landfill Maricopa County 33°40′55″N 112°28′36″W / 33.6819°N 112.4767°W / 33.6819; -112.4767 (Northwest Regional Landfill) 3.2 Landfill gas Reciprocating engine (x2) 2012 [28]
Novo BioPower Plant Navajo County 34°30′12″N 110°20′06″W / 34.5032°N 110.3350°W / 34.5032; -110.3350 (Novo BioPower) 22 Wood/ wood waste Steam turbine 2008 [29]
Western Renewable Energy Apache County 34°05′35″N 109°17′24″W / 34.0930°N 109.2900°W / 34.0930; -109.2900 (Western RE Biomass) 2.5 Wood/ wood waste Steam turbine 2004 [30]

Hydroelectric dams

See also: List of dams and reservoirs in Arizona
Name County Coordinates Capacity
(MW)		 Year
opened		 Refs
Arizona Falls Maricopa County 33°29′24″N 111°57′32″W / 33.4899°N 111.9589°W / 33.4899; -111.9589 (Arizona Falls Hydro) 0.75 2003 [22]
C.C. Cragin Dam
(Blue Ridge)		 Coconino County 34°33′16″N 111°11′50″W / 34.55444°N 111.19722°W / 34.55444; -111.19722 (C.C. Cragin Hydro) 1965 [22]
Childs-Irving Hydro Yavapai County 34°21′04″N 111°42′02″W / 34.3511°N 111.7006°W / 34.3511; -111.7006 (Childs-Irving Hydro) 4.2 1916 closed
Coolidge Dam Gila County 33°10′29″N 110°31′40″W / 33.1747°N 110.5279°W / 33.1747; -110.5279 (Coolidge Hydro) 10 1935 closed
Crosscut Hydro Maricopa County 33°26′22″N 111°56′46″W / 33.4394°N 111.9461°W / 33.4394; -111.9461 (Crosscut Hydro) 3.0 1939 [22]
Davis Dam Mohave County 35°11′49″N 114°34′15″W / 35.1970°N 114.5707°W / 35.1970; -114.5707 (Davis Hydro) 251 1951
Glen Canyon Dam Coconino County 36°56′12″N 111°29′02″W / 36.9366°N 111.4839°W / 36.9366; -111.4839 (Glen Canyon Hydro) 1,320 1964-1966 [31]
Headgate Rock La Paz County 34°10′06″N 114°16′39″W / 34.1683°N 114.2774°W / 34.1683; -114.2774 (Headgate Rock Hydro) 19.5 1993
Hoover Dam Mohave County 36°00′56″N 114°44′17″W / 36.0155°N 114.7380°W / 36.0155; -114.7380 (Hoover Dam Hydro) 2,080[A] 1936-1943/
1952
Horse Mesa Dam Maricopa County 33°35′27″N 111°20′38″W / 33.5907°N 111.3440°W / 33.5907; -111.3440 (Horse Mesa Hydro) 129 1927 [22]
Mormon Flat Dam Maricopa County 33°33′13″N 111°26′35″W / 33.5536°N 111.4431°W / 33.5536; -111.4431 (Mormon Flat Hydro) 60 1926 [22]
Parker Dam La Paz County 34°17′43″N 114°08′25″W / 34.2953°N 114.1402°W / 34.2953; -114.1402 (Parker Dam Hydro) 120 1938
South Consolidated Hydro Maricopa County 33°27′59″N 111°46′52″W / 33.4665°N 111.7811°W / 33.4665; -111.7811 (South Consolidated Hydro) 1.4 1981 [22]
Stewart Mountain Dam Maricopa County 33°33′58″N 111°32′10″W / 33.5661°N 111.5360°W / 33.5661; -111.5360 (Stewart Mountain Hydro) 13 1930 [22]
Theodore Roosevelt Dam Gila/Maricopa 33°40′16″N 111°09′42″W / 33.6711°N 111.1618°W / 33.6711; -111.1618 (Roosevelt Hydro) 36 1973 [22]

A 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.[32][33]

Solar thermal plants

See also: Solar power in Arizona
Name County Coordinates Capacity
(MW)		 Year
opened		 Ref
Solana Generating Station Maricopa County 32°55′20″N 112°57′21″W / 32.9223°N 112.9559°W / 32.9223; -112.9559 (Solana Solar Station) 280 2013 [34]

Solar photovoltaic plants

See also: Solar power in Arizona
Name County Coordinates Capacity
(MWAC)		 Year
opened		 Refs
McFarland Solar Yuma County 32°56′15″N 113°28′15″W / 32.9376°N 113.4708°W / 32.9376; -113.4708 500 2023/2025
Saint Solar Energy Center Pinal County 32°52′59″N 111°30′31″W / 32.88297°N 111.50855°W / 32.88297; -111.50855 88 2023 [35]
Mesquite Solar project Maricopa County 33°20′24″N 112°56′02″W / 33.3399°N 112.9339°W / 33.3399; -112.9339 (Mesquite Solar) 400 2012/2016
Agua Caliente Solar Project Yuma County 32°58′39″N 113°29′40″W / 32.9774°N 113.4945°W / 32.9774; -113.4945 (Agua Caliente Solar) 290 May 2012/2014 [36]
Sonoran Solar Energy Maricopa County 33°14′33″N 112°32′30″W / 33.2425°N 112.5418°W / 33.2425; -112.5418 260 2012 [37]
Agave Solar Maricopa County 33°19′33″N 112°50′32″W / 33.3259°N 112.8422°W / 33.3259; -112.8422 (Agave Solar) 150 September 25, 2023 [38][39]
Arlington Valley Solar Energy II [ru] Maricopa County 33°18′18″N 112°50′02″W / 33.3050°N 112.8339°W / 33.3050; -112.8339 (Arlington Valley Solar) 125 April 2013 [40]
Saint Solar Pinal County 32°51′51″N 111°30′03″W / 32.8643°N 111.5007°W / 32.8643; -111.5007 100 June 2023 [41]
Red Horse III Cochise County 32°15′40″N 110°09′15″W / 32.2610°N 110.1543°W / 32.2610; -110.1543 (Red Horse Solar) 81 July 2016 [42]
Kayenta Solar Project Navajo County 36°47′21″N 110°14′18″W / 36.7893°N 110.2383°W / 36.7893; -110.2383 (Kayenta Solar) 55 2017/2019 [43]
Gray Hawk Solar Mohave County 35°20′46″N 113°54′53″W / 35.3462°N 113.9148°W / 35.3462; -113.9148 (Gray Hawk Solar) 55 June 2018 [44]
Bonnybrooke Solar Mohave County 33°03′11″N 111°20′24″W / 33.0530°N 111.3400°W / 33.0530; -111.3400 (Bonnybrooke Solar) 50 November 2016 [45]
Avalon Pima County 32°02′19″N 110°57′30″W / 32.0385°N 110.9584°W / 32.0385; -110.9584 (Avalon Solar) 45 December 2014/2016
Sandstone Solar Pinal County 33°02′08″N 111°27′01″W / 33.0356°N 111.4503°W / 33.0356; -111.4503 (Sandstone Solar) 45 December 2015 [46]
Red Rock Maricopa County 32°33′04″N 111°17′21″W / 32.5510°N 111.2892°W / 32.5510; -111.2892 (Red Rock Solar) 40 February 2017 [47]
Foothills Solar Plant Hybrid Yuma County 32°38′20″N 114°25′52″W / 32.6388°N 114.4312°W / 32.6388; -114.4312 (Foothills Solar) 35 March 2013 [48]
Gila Bend Hybrid Maricopa County 32°56′56″N 112°46′12″W / 32.9490°N 112.7701°W / 32.9490; -112.7701 (Gila Bend Hybrid) 32 October 2014 [49]
OE_AZ1 La Paz County 33°46′15″N 113°39′17″W / 33.7709°N 113.6546°W / 33.7709; -113.6546 (OE_AZ1 Solar) 32 December 2019 [50]
Avra Valley Solar Pima County 32°22′18″N 111°16′58″W / 32.3717°N 111.2828°W / 32.3717; -111.2828 (Avra Valley Solar) 26 January 2013 [51]
Apache Solar 1 Cochise County 32°04′05″N 109°53′25″W / 32.0681°N 109.8904°W / 32.0681; -109.8904 (Apache Solar) 20 October 2017 [52]
Copper Crossing Solar Ranch Pinal County 33°09′33″N 111°28′53″W / 33.1592°N 111.4814°W / 33.1592; -111.4814 (Copper Crossing Solar) 20 2011 [53]
Pinal Central Energy Center Hybrid Pinal County 32°52′33″N 111°33′04″W / 32.8757°N 111.5511°W / 32.8757; -111.5511 (Pinal CEC Solar) 20 April 2018 [54]
Sulphur Springs Cochise County 32°03′46″N 109°55′09″W / 32.0628°N 109.9193°W / 32.0628; -109.9193 (Sulphur Springs Solar) 20 December 2016 [55]
Chino Solar Valley Yavapai County 34°43′27″N 112°25′54″W / 34.7242°N 112.4318°W / 34.7242; -112.4318 (Chino Solar Valley) 19 December 2012 [56]
Paloma Solar Hybrid Maricopa County 33°01′15″N 112°39′42″W / 33.0209°N 112.6616°W / 33.0209; -112.6616 18 September 2011 [57]
Cotton Center Solar Hybrid Maricopa County 33°02′06″N 112°39′39″W / 33.0351°N 112.6607°W / 33.0351; -112.6607 17 November 2011 [58]
Saddle Mountain Solar I Maricopa County 33°22′52″N 113°11′05″W / 33.38107°N 113.18471°W / 33.38107; -113.18471 15 December 2012 [59]
Desert Star Hybrid Maricopa County 33°08′38″N 112°39′47″W / 33.14397°N 112.66304°W / 33.14397; -112.66304 10 September 2015 [60]
Box Canyon Solar Project Pinal County 33°05′50″N 111°16′42″W / 33.0972°N 111.2783°W / 33.0972; -111.2783 300 2025 [61]
Eleven Mile Solar Center Pinal County 32°51′40″N 111°35′20″W / 32.86115°N 111.58893°W / 32.86115; -111.58893 300 2024 [62]
Storey Solar Energy Center Pinal County 32°53′00″N 111°30′30″W / 32.88321°N 111.50827°W / 32.88321; -111.50827 122 December 2023 [63][64]
Luke Solar Maricopa County 33°31′36″N 112°22′51″W / 33.5268°N 112.3807°W / 33.5268; -112.3807 15 June 2015 [65]
Queen Creek Solar Farm Maricopa County 33°16′00″N 111°36′49″W / 33.26678°N 111.61353°W / 33.26678; -111.61353 19 October 2012 [66]
Badger 1 Solar Maricopa County 33°29′53″N 112°48′47″W / 33.4981°N 112.8131°W / 33.4981; -112.8131 15 November 2013 [67]
Hyder II Hybrid Yuma County 33°01′32″N 113°21′13″W / 33.0256°N 113.3535°W / 33.0256; -113.3535 32 December 2013 [68]
Picture Rocks Solar Pima County 32°22′14″N 111°14′33″W / 32.37066°N 111.24242°W / 32.37066; -111.24242 20 December 2012 [69]
Brittlebush Solar Park Pinal County 32°57′54″N 111°31′59″W / 32.965°N 111.5331°W / 32.965; -111.5331 200 July 2024 [70]

Wind farms

See also: Wind power in Arizona
Name County Coordinates Capacity
(MW)		 Year
opened		 Refs
Dry Lake Wind Power Project Navajo County 34°39′35″N 110°17′03″W / 34.6596°N 110.2842°W / 34.6596; -110.2842 (Dry Lake Wind) 127 August 2009 [71]
Kingman 1 Mohave County 35°08′45″N 114°04′03″W / 35.1458°N 114.0675°W / 35.1458; -114.0675 (Kingman Wind) 10 September 2011 [72]
Perrin Ranch Wind Coconino County 35°24′56″N 112°16′16″W / 35.4156°N 112.2711°W / 35.4156; -112.2711 (Perrin Ranch Wind) 99 January 2012 [73]
Red Horse 2 Cochise County 32°17′10″N 110°05′17″W / 32.2861°N 110.0881°W / 32.2861; -110.0881 (Red Horse Wind) 30 August 2015 [74]
White Hills Wind Mohave County 35°28′24″N 114°17′21″W / 35.47326°N 114.2892°W / 35.47326; -114.2892 (White Hills Wind) 350 2021 [75]
Babbitt Ranch Energy Center Coconino County 35°38′33″N 112°05′36″W / 35.6425°N 112.0932°W / 35.6425; -112.0932 161 June 2024 [76][77]

Storage power stations

Data from the U.S. Energy Information Administration serves as a general reference.[4]

Battery storage

Name County Coordinates Discharge
capacity
(MW)		 Year
opened		 Refs
McFarland Storage Yuma County 32°56′15″N 113°28′15″W / 32.9376°N 113.4708°W / 32.9376; -113.4708 435 2025 [78]
Storey Solar / BESS Pinal County 32°52′59″N 111°30′31″W / 32.88297°N 111.50855°W / 32.88297; -111.50855 88 2023 [79]
Eleven Mile Solar Center BESS Pinal County 32°51′40″N 111°35′20″W / 32.86115°N 111.58893°W / 32.86115; -111.58893 300 2024 [80]
Agua Fria Generating Station Maricopa County 33°33′12″N 112°12′45″W / 33.55340°N 112.21263°W / 33.55340; -112.21263 25 2021 [81]
Paloma Solar Hybrid Maricopa County 33°01′29″N 112°39′31″W / 33.02481°N 112.65867°W / 33.02481; -112.65867 17 April 2023 [82]
AES Gilbert ES Maricopa County 33°26′48″N 111°57′23″W / 33.4468°N 111.9563°W / 33.4468; -111.9563 (AES Gilbert ES) 10 2019 [83]
Iron Horse BESS Hybrid Pima County 32°05′55″N 110°49′09″W / 32.0985°N 110.8191°W / 32.0985; -110.8191 (Iron Horse BESS) 10 2017 [84][85]
Pima BESS Pima County 32°15′06″N 110°59′29″W / 32.2516°N 110.9913°W / 32.2516; -110.9913 (Pima BESS) 10 2017 [85]
Pinal Central Hybrid ES Pima County 32°52′33″N 111°33′04″W / 32.8757°N 111.5511°W / 32.8757; -111.5511 (Pinal Central ES) 10 2018 [54]
Desert Star Hybrid Maricopa County 33°08′42″N 112°39′35″W / 33.14512°N 112.65962°W / 33.14512; -112.65962 10 February 2023 [86]
Punkin Center BS Gila County 33°52′33″N 111°18′49″W / 33.8758°N 111.3136°W / 33.8758; -111.3136 (Punkin Center BS) 2 2018 [87]
Sonoran Solar Energy Maricopa County 33°14′20″N 112°34′18″W / 33.23900°N 112.57154°W / 33.23900; -112.57154 260 2012 [88][89]
Sierra Estrella Energy Storage Facility Maricopa County 33°24′38″N 112°18′51″W / 33.41056°N 112.31426°W / 33.41056; -112.31426 250 June 2024 [90][91]
Superstition Energy Storage facility Maricopa County 33°21′32″N 111°49′51″W / 33.35891°N 111.83095°W / 33.35891; -111.83095 90 June 24 2024 [90][92]
Storey Solar Energy Center Pinal County 32°53′00″N 111°30′31″W / 32.8832°N 111.5087°W / 32.8832; -111.5087 88 December 2023 [63][64]
Papago Storage Maricopa County 2025 [93][94]
Scatter Wash Battery Storage Comple Maricopa County 255 April 2025 [95][96]
Hyder II Hybrid Yuma County 33°01′33″N 113°21′08″W / 33.0259°N 113.3521°W / 33.0259; -113.3521 14 2013 [68]
Foothills Solar Plant Hybrid Yuma County 32°38′20″N 114°25′53″W / 32.6389°N 114.4313°W / 32.6389; -114.4313 35 April 2023 [48]
Saint Solar Energy Center Pinal County 32°51′51″N 111°30′03″W / 32.8643°N 111.5007°W / 32.8643; -111.5007 100 [97]
Signal Butte Energy Storage 250 Mid 2026 [98]
Flatland Energy Storage Project Pinal County 200 2025 [99]

Pumped storage

Name Location Coordinates Capacity
(MW)		 Year
opened		 Refs
Horse Mesa Maricopa County 33°35′27″N 111°20′38″W / 33.5907°N 111.3440°W / 33.5907; -111.3440 (Horse Mesa PS) 119 1972 [22]
Mormon Flat Maricopa County 33°33′13″N 111°26′35″W / 33.5536°N 111.4431°W / 33.5536; -111.4431 (Mormon Flat PS) 57 1971 [22]
Waddell Maricopa County 33°50′41″N 112°16′17″W / 33.8447°N 112.2714°W / 33.8447; -112.2714 (Waddell PS) 40 1993 [100]

Utility companies

Notes

  1. ^ Includes conventional hydroelectric and hydroelectric pumped storage.

References

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