Calistoga Power Plant
Other power plant · Lake County, California
Nameplate capacity
176 MW
Rank in California
#148
of 1,897 plants
In service since
1984
March 1984
Details
- Primary fuel
- Other
- Technology
- Geothermal
- Operator
- Geysers Power Co LLC
- County
- Lake County
- Generating units
- 2
- Share of state capacity
- 0.16%
- Rank among other plants in California
- #2 of 152
- EIA plant code
- 50066
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| UNT1 | Geothermal | 88 MW | 50 MW | 1984 | Operating |
| UNT2 | Geothermal | 88 MW | 50 MW | 1984 | 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
| El Segundo Cogen | Natural gas | 180 MW |
| Spring Creek | Hydro | 180 MW |
| RE Mustang LLC | Solar | 175 MW |
| Centinela Solar Energy | Solar | 175 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 176 MW solar plant and a 176 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