176.4 MW Geothermal operating in Lake, CA — California Independent System Operator
176.4 MW
Nameplate Capacity
2
Generators
units
Geothermal
Technology
1984
Operating Since
Coordinates
38.7879, -122.7434
County
Lake, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Geysers Power Co LLC | Geysers Power | — |
| Owner(s) | Geysers Power Co LLC | Geysers Power Co LLC [100%] | — |
| Status | Operating | operating | — |
GEM identifies the owner as Geysers Power Co LLC [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
Calistoga Power Plant is a 176.4 MW geothermal facility located in Lake County, California. The plant, which began operating in 1984, is owned and operated by Geysers Power Co LLC. It utilizes geothermal energy as its primary fuel source and consists of two generators. The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, Calistoga Power Plant generated 454,658 MWh of electricity, achieving a capacity factor of 29.4%. The plant holds the ranking of second-largest geothermal power plant in California out of four such plants, and it is the second-largest geothermal plant nationally out of seven.
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
40.8K MWh
Latest Month
454.7K MWh
Annual Generation
29.4%
Capacity Factor
No financial data available for this plant.
Point of Interconnection
Nearest Substation
Calistoga 199
Substation Distance
1.155 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
SMUDGEO1_2_N006
Pricing Hub
TH_NP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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PEMFC Market for Stationary Application Size, Share [2032]
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PEMFC Market for Stationary Application Size, Share [2032]
The global proton exchange membrane fuel cell market for stationary application size is projected to grow up to $2873.19 million by 2032.
PEMFC Market for Stationary Application Size, Share [2032]
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Last updated 2026-03-14
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