Johanna Energy Center, LLC
Battery storage power plant · Orange County, California
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Johanna Energy Center, LLC
- County
- Orange County
- Generating units
- 3
- Share of state capacity
- 0.07%
- Rank among battery storage plants in California
- #45 of 142
- EIA plant code
- 63843
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SASP3 | Batteries | 40 MW | 40 MW | 2022 | Operating |
| SAP2 | Batteries | 20 MW | 20 MW | 2022 | Operating |
| SASP1 | Batteries | 20 MW | 20 MW | 2021 | 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
| Bottleneck Energy Storage | Battery storage | 80 MW |
| Desert Harvest, LLC | Solar | 80 MW |
| North Brawley Geothermal Plant | Other | 80 MW |
| Sagebrush ESS | Battery storage | 80 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 80 MW solar plant and a 80 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