United States › Power plants › Battery storage › Arizona
BATTERY STORAGEPediment BESS I
Pediment BESS I is a 250 MW operating battery storage site in Maricopa County, Arizona, operated by Pediment BESS I LLC. Its batteries store up to 1,000 MWh.
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| 1 | Batteries | 250 MW 1,000 MWh |
Plant details
- Operator
- Pediment BESS I LLC
- Location
- Maricopa County, Arizona
- Balancing authority
- SRP
- Sector
- IPP Non-CHP
- Capacity
- Operating: 250 MW
- First unit online
- Apr 2026
- EIA plant ID
- 68477
Location
33.3557, -111.6021
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Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem