Geothermal 2
Other power plant · Sonoma County, California
Nameplate capacity
110 MW
Rank in California
#253
of 1,897 plants
In service since
1985
December 1985
Details
- Primary fuel
- Other
- Technology
- Geothermal
- Operator
- Northern California Power Agny
- County
- Sonoma County
- Generating units
- 2
- Share of state capacity
- 0.10%
- Rank among other plants in California
- #6 of 152
- EIA plant code
- 7369
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Geothermal | 55 MW | 25 MW | 1985 | Out of service and NOT expected to return to service in next calendar year |
| 4 | Geothermal | 55 MW | 40 MW | 1986 | 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
| Catalina Solar LLC | Solar | 110 MW |
| Geothermal 1 | Other | 110 MW |
| Pit 7 | Hydro | 110 MW |
| Olive | Natural gas | 110 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 110 MW solar plant and a 110 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