Directory of Power Plants in Arizona
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| H Wilson Sundt Generating Station | Tucson Electric Power Co | Tucson, AZ | Tucson Electric Power (TEPC) | 1.9 TWh | Nov 1958 | Apr 2025 | Natural Gas |
| Harquahala Generating Project | New Harquahala Generating Co, LLC | Tonopah, AZ | New Harquahala Generating Company, LLC (HGMA) | 3.7 TWh | May 2004 | Apr 2025 | Natural Gas |
| Harquahala 2 | Copia Power | Tonopah, AZ | Arizona Public Service Company (AZPS) | 65.4 GWh | - | Apr 2025 | Solar |
| Headgate Rock | Colorado River Indian Irr Proj | Parker, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 32.3 GWh | Feb 1993 | Dec 2023 | Water |
| Hyder Solar Hybrid | Arizona Public Service Co | Hyder, AZ | Arizona Public Service Company (AZPS) | 35.3 GWh | Oct 2011 | Dec 2024 | Solar |
| Hyder II Hybrid | Arizona Public Service Co | Hyder, AZ | Arizona Public Service Company (AZPS) | 32.5 GWh | Nov 2013 | Dec 2024 | Solar |
| Hoover Dam (AZ) | U S Bureau of Reclamation | Boulder City, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 1.2 TWh | Aug 1936 | Apr 2025 | Water |
| Horse Mesa | Salt River Project | Apache Junction, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 111.6 GWh | Mar 1927 | Apr 2025 | Water |
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 |