Santee BESS
Battery storage power plant · San Diego County, California
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- San Diego Gas & Electric Co
- County
- San Diego County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among battery storage plants in California
- #97 of 142
- EIA plant code
- 67118
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Batteries | 10 MW | 10 MW | 2026 | 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
| SEPV Palmdale East | Solar | 10 MW |
| Salton Sea Power Gen Co - Unit 1 | Other | 10 MW |
| Sierra Energy Storage, LLC | Battery storage | 10 MW |
| Vallecito | Battery storage | 10 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 10 MW solar plant and a 10 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