VESI Pomona
Battery storage power plant · Los Angeles County, California
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- VESI Pomona Energy Storage, Inc.
- County
- Los Angeles County
- Generating units
- 2
- Share of state capacity
- 0.04%
- Rank among battery storage plants in California
- #65 of 142
- EIA plant code
- 50300
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| BESS1 | Batteries | 20 MW | 20 MW | 2016 | Operating |
| BESS2 | Batteries | 20 MW | 20 MW | 2023 | 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
| Sagebrush Solar 2 ESS 40 | Battery storage | 40 MW |
| Springs Generating Station | Natural gas | 40 MW |
| Vista Energy Storage System | Battery storage | 40 MW |
| Vulcan-BN Geothermal Power Company | Other | 40 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 40 MW solar plant and a 40 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