Viejas Microgrid
Battery storage power plant · San Diego County, California
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- —
- County
- San Diego County
- Generating units
- 2
- Share of state capacity
- 0.03%
- Rank among battery storage plants in California
- #68 of 142
- EIA plant code
- 70512
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| VMBA1 | Batteries | 18 MW | 18 MW | 2025 | Operating |
| VMPV1 | Solar Photovoltaic | 13 MW | 12 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
| CamChino Leasing LLC | Natural gas | 31 MW |
| Southeast Kern River Cogen | Natural gas | 31 MW |
| P66 Rodeo Solar | Solar | 30 MW |
| SPI Anderson 2 | Other | 30 MW |
About this data
From EIA’s inventory of operable generators, August 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 31 MW solar plant and a 31 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