Three Sisters Solar Generation And Bess is a battery storage power plant in Arizona.
| Plant Name | Three Sisters Solar Generation And Bess |
|---|---|
| Operator | Thsi Bn, Llc |
| City | Manzoro |
| County | Pinal County |
| State | Arizona |
| ZIP | 86401 |
| Coordinates | 32.05373, -109.82304 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| THSI1 | Batteries | Battery | 300 MW | Approved | — |
| THSI2 | Solar Photovoltaic | Solar | 300 MW | Approved | — |
| Owner | Location | Share |
|---|---|---|
| Westdevco, Llc | West Palm Beach, FL | 5000.0% |
| Cordelio Power Holdings, Llc | Willmington, DE | 5000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| NERC Region | WECC |
|---|---|
| Balancing Authority | Arizona Public Service Company |
Battery storage facilities don't generate electricity — they store it. They charge from the grid (often from solar during the day) and discharge during peak demand or to firm up renewables. EIA classifies them as power plants because they connect to the grid like one.