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25 MW Geothermal operating in Sonoma, CA — California Independent System Operator
25 MW
Nameplate Capacity
2
Generators
units
Geothermal
Technology
1989
Operating Since
Coordinates
38.8339, -122.8810
County
Sonoma, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Geysers Power Co LLC | Geysers Power Co LLC | — |
| Owner(s) | Geysers Power Co LLC | Geysers Power Co LLC | — |
| Status | Operating | operating | — |
GEM identifies the owner as Geysers Power Co LLC
This entity is not yet in the GEM ownership database — chain unavailable.
The Aidlin Geothermal Power Plant is a 25 MW geothermal facility located in Sonoma County, California. It began operating in 1989 and is owned and operated by Geysers Power Co LLC. The plant utilizes two generators to convert geothermal energy into electricity. It is connected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year of data, the Aidlin Geothermal Power Plant generated 81,307 MWh of electricity, achieving a capacity factor of 37.0%. Aidlin is the 23rd largest geothermal plant in California out of 33, and the 46th largest in the United States out of 70.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
8.1K MWh
Latest Month
81.3K MWh
Annual Generation
37.0%
Capacity Factor
CO₂ Intensity
89 lb/MWh
NOx
0.001 lb/MWh
SO₂
2013
$2,851/kW
Est. Construction Cost
Total estimated cost: $71.3M
Point of Interconnection
Nearest Substation
Eagle Rock Substation · 115 kV
Substation Distance
< 10 km
Operator
Pacific Gas and Electric Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_NP15_GEN-APND
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
No news articles linked yet for this plant.
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No ask pi reports yet for this entity.
ask pi about Aidlin Geothermal Power PlantCalifornia Independent System Operator (CISO)
Grid Voltage
115.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0.000 lb/MWh
CH₄
—
N₂O
—
Capacity Factor
35.3%
Annual Net Gen
77 GWh
CO₂eq
89 lb/MWh
Subregion
WECC California