Nameplate capacity
20 MW
Rank in California
#722
of 1,897 plants
In service since
1941
February 1941
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Imperial Irrigation District
- County
- Imperial County
- Generating units
- 2
- Share of state capacity
- 0.02%
- Rank among hydro plants in California
- #94 of 244
- EIA plant code
- 387
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 10 MW | 10 MW | 1950 | Operating |
| 2 | Conventional Hydroelectric | 9.6 MW | 10 MW | 1941 | 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
| White River Solar 2 | Solar | 20 MW |
| Alamo | Hydro | 20 MW |
| Wildwood Solar I, LLC | Solar | 20 MW |
| Calistoga Resilency Center | Battery storage | 19 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 20 MW solar plant and a 20 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