Directory of Power Plants in Arizona
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Ocotillo | Arizona Public Service Co | Tempe, AZ | Arizona Public Service Company (AZPS) | 473.2 GWh | Feb 1960 | Sep 2025 | Natural Gas |
| OE_AZ1 | Onward Energy | Salome, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 83.2 GWh | Nov 2019 | Sep 2025 | Solar |
Browse Power Plants By Arizona Counties
Figures are based on September 2025 generation numbers.| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Maricopa County, AZ | # 1 | 88 | 81.0 TWh |
| Mohave County, AZ | # 2 | 16 | 9.0 TWh |
| Apache County, AZ | # 3 | 4 | 7.8 TWh |
| Pinal County, AZ | # 4 | 26 | 5.8 TWh |
| Coconino County, AZ | # 5 | 12 | 4.7 TWh |
| Pima County, AZ | # 6 | 39 | 2.8 TWh |
| Cochise County, AZ | # 7 | 11 | 2.8 TWh |
| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Yuma County, AZ | # 8 | 17 | 2.5 TWh |
| Navajo County, AZ | # 9 | 8 | 1.8 TWh |
| La Paz County, AZ | # 10 | 13 | 118.9 GWh |
| Yavapai County, AZ | # 11 | 7 | 97.8 GWh |
| Gila County, AZ | # 12 | 2 | 50.2 GWh |
| Santa Cruz County, AZ | # 13 | 2 | 4.8 GWh |