Directory of Power Plants in Arizona
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Harquahala Generating Project | New Harquahala Generating Co, LLC | Tonopah, AZ | New Harquahala Generating Company, LLC (HGMA) | 2.7 TWh | May 2004 | Aug 2024 | Natural Gas |
| H Wilson Sundt Generating Station | Tucson Electric Power Co | Tucson, AZ | Tucson Electric Power (TEPC) | 1.5 TWh | Nov 1958 | Aug 2024 | Natural Gas |
| Hoover Dam (AZ) | U S Bureau of Reclamation | Boulder City, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 1.5 TWh | Aug 1936 | Aug 2024 | Water |
| Horse Mesa | Salt River Project | Apache Junction, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 82.7 GWh | Mar 1927 | Aug 2024 | Water |
| Hyder Solar Hybrid | Arizona Public Service Co | Hyder, AZ | Arizona Public Service Company (AZPS) | 40.2 GWh | Oct 2011 | Dec 2023 | 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 II Hybrid | Arizona Public Service Co | Hyder, AZ | Arizona Public Service Company (AZPS) | 30.3 GWh | Nov 2013 | Dec 2023 | Solar |
Browse Power Plants By Arizona Counties
Figures are based on August 2024 generation numbers.| County | State Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Maricopa County, AZ | # 1 | 82 | 77.1 TWh |
| Mohave County, AZ | # 2 | 15 | 10.2 TWh |
| Apache County, AZ | # 3 | 4 | 9.4 TWh |
| Pinal County, AZ | # 4 | 20 | 5.9 TWh |
| Coconino County, AZ | # 5 | 8 | 3.8 TWh |
| Cochise County, AZ | # 6 | 11 | 2.6 TWh |
| Pima County, AZ | # 7 | 38 | 2.3 TWh |
| County | State Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Navajo County, AZ | # 8 | 7 | 2.0 TWh |
| Yuma County, AZ | # 9 | 13 | 1.5 TWh |
| La Paz County, AZ | # 10 | 5 | 118.7 GWh |
| Yavapai County, AZ | # 11 | 7 | 83.5 GWh |
| Gila County, AZ | # 12 | 2 | 51.4 GWh |
| Santa Cruz County, AZ | # 13 | 2 | 10.3 GWh |