Directory of Power Plants in Arizona
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Sun Streams 4 | Sun Streams Expansion, LLC | Tonopah, AZ | Arizona Public Service Company (AZPS) | 138.2 GWh | - | Apr 2025 | Solar |
| Saddle Mountain Solar I | SunE AZ2, LLC | Tonopah, AZ | Arizona Public Service Company (AZPS) | 34.5 GWh | Nov 2012 | Dec 2024 | Solar |
| Springerville | Tucson Electric Power Co | Springerville, AZ | Tucson Electric Power (TEPC) | 5.3 TWh | May 1985 | Apr 2025 | Subbituminous Coal : 99.2% |
| Saguaro | Arizona Public Service Co | Red Rock, AZ | Arizona Public Service Company (AZPS) | 135.2 GWh | Apr 1972 | Dec 2024 | Natural Gas |
| Stewart Mountain | Salt River Project | Phoenix, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 45.7 GWh | Feb 1930 | Dec 2024 | Water |
| South Point Energy Center | South Point Energy Center LLC | Mohave Valley, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 2.6 TWh | Feb 2001 | Feb 2025 | Natural Gas |
| SR McNeal | SR McNeal, LLC | McNeal, AZ | Tucson Electric Power (TEPC) | 54.4 GWh | Nov 2023 | Apr 2025 | Solar |
| Serrano | Serrano Solar, LLC | Marana, AZ | Arizona Public Service Company (AZPS) | 25.0 GWh | - | Apr 2025 | Solar |
| Sun Streams 2 | Sun Streams 2, LLC | Hassayampa, AZ | California Independent System Operator (CISO) | 320.9 GWh | May 2021 | Apr 2025 | Solar |
| Santan | Salt River Project | Gilbert, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 6.0 TWh | Sep 1974 | Apr 2025 | Natural Gas |
| Solana Generating Station | Arizona Solar One LLC | Gila Bend, AZ | Arizona Public Service Company (AZPS) | 838.8 GWh | Sep 2013 | Apr 2025 | Solar |
| Sandstone Solar | AES Distributed Energy | Florence, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 117.2 GWh | Nov 2015 | Dec 2024 | Solar |
| Saint Solar | Saint Solar LLC | Coolidge, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 278.8 GWh | Dec 2020 | Apr 2025 | Solar |
| Storey Solar and Storage | Storey Energy Center, LLC | Coolidge, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 295.5 GWh | Aug 2023 | Apr 2025 | Solar |
| Sulphur Springs | MN8 Energy LLC | Cochise, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 51.5 GWh | Nov 2016 | Dec 2024 | Solar |
| Sundance | Arizona Public Service Co | Casa Grande, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 352.8 GWh | Apr 2002 | Apr 2025 | Natural Gas |
| Sonoran Solar Energy | Sonoran Solar Energy, LLC | Buckeye, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 1.1 TWh | Jun 2023 | Apr 2025 | Solar |
| Sun Streams, LLC | EDP Renewables North America LLC | Arlington, AZ | California Independent System Operator (CISO) | 407.2 GWh | Dec 2019 | Apr 2025 | Solar |
| Sun Streams 3 | Sun Streams PVS, LLC | Arlington, AZ | Arizona Public Service Company (AZPS) | 671.0 GWh | May 2024 | Apr 2025 | Solar : 75.8% Electricity used for energy storage : 24.2% |
Browse Power Plants By Arizona Counties
Figures are based on December 2024 generation numbers.| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Santa Cruz County, AZ | # 13 | 2 | 4.8 GWh |
| Gila County, AZ | # 12 | 2 | 50.2 GWh |
| Yavapai County, AZ | # 11 | 7 | 97.8 GWh |
| La Paz County, AZ | # 10 | 11 | 119.1 GWh |
| Navajo County, AZ | # 9 | 7 | 1.8 TWh |
| Yuma County, AZ | # 8 | 17 | 2.0 TWh |
| Pima County, AZ | # 7 | 39 | 2.7 TWh |
| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Cochise County, AZ | # 6 | 11 | 2.7 TWh |
| Coconino County, AZ | # 5 | 8 | 4.4 TWh |
| Pinal County, AZ | # 4 | 26 | 5.1 TWh |
| Apache County, AZ | # 3 | 4 | 7.9 TWh |
| Mohave County, AZ | # 2 | 16 | 9.8 TWh |
| Maricopa County, AZ | # 1 | 88 | 79.6 TWh |