Bishop Ranch - BR 15-AA
Battery storage power plant · Contra Costa County, California
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Alcosta Boulevard BR 15-AA Solar Project 2020 LLC
- County
- Contra Costa County
- Generating units
- 3
- Share of state capacity
- 0.00%
- Rank among battery storage plants in California
- #132 of 142
- EIA plant code
- 68524
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4654B | Batteries | 0.5 MW | 0.5 MW | 2025 | Operating |
| 4654C | Solar Photovoltaic | 0.5 MW | 0.5 MW | 2025 | Operating |
| 4654R | Solar Photovoltaic | 0.2 MW | 0.2 MW | 2025 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in California
| Alticor Inc - Solar Project | Solar | 1.2 MW |
| Baker | Battery storage | 1.2 MW |
| Bishop Ranch - BR 15-CC | Battery storage | 1.2 MW |
| Bishop Ranch - BR 8-Q | Solar | 1.2 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1.2 MW solar plant and a 1.2 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All California power plants · What California actually generates