Warm Springs Hydro Project
Hydro power plant · Sonoma County, California
Nameplate capacity
2.7 MW
Rank in California
#1288
of 1,897 plants
In service since
1988
December 1988
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Sonoma County Water Agency
- County
- Sonoma County
- Generating units
- 1
- Share of state capacity
- 0.00%
- Rank among hydro plants in California
- #205 of 244
- EIA plant code
- 54261
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3385 | Conventional Hydroelectric | 2.7 MW | 1.2 MW | 1988 | 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
| San Antonio Regional Hospital | Natural gas | 2.7 MW |
| Tracy Linne | Solar | 2.7 MW |
| 20333 Normandie PV, LLC | Solar | 2.6 MW |
| Amazon - Stockton - Roof (SCK1) - (CA) | Solar | 2.6 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 2.7 MW solar plant and a 2.7 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