AZ BESS Facilities
Battery Energy Storage System (BESS) facilities in AZ state provide a critical bridge between renewable generation and reliable power delivery. By storing excess energy from solar, wind, and other sources, these sites help balance the grid, support peak demand, and improve resilience during outages. Increasingly paired with renewable farms and microgrids, AZ state-level BESS projects also enable participation in virtual power plants (VPPs) and deliver services such as frequency regulation and backup power for critical infrastructure.
| BESS Facility | MW | Status |
|---|---|---|
| Agua Fria / Bolster Substation | 25 | operating |
| Atlas | 300 | planning |
| Cotton Center Solar Hybrid | 17 | planning |
| Desert Star Hybrid | 10 | planning |
| Desert Star Hybrid | 10 | planning |
| El Sol BESS | 50 | planning |
| Foothills Solar Plant Hybrid | 38 | planning |
| Gila Bend Hybrid | 36 | planning |
| Hyder II Hybrid | 14 | planning |
| Hyder Solar Hybrid | 16 | planning |
| Mesquite Solar 4 | 10 | planning |
| Mesquite Solar 5 | 60 | planning |
| Paloma Solar Hybrid | 17 | planning |
| Papago | 300 | planning |
| Pinal Central Solar Energy Center | 10 | operating |
| Red Antelope Solar & Energy Storage Farm | 500 | planning |
| Sierra Estrella Energy Storage | 250 | planning |
| Sonoran Energy Center | 260 | planning |
| Storey Energy Center | 88 | planning |
| Superstition Energy Storage | 90 | planning |
| Wilmot Energy Center | 30 | operating |