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47.5 MW Geothermal operating in Imperial, CA — Imperial Irrigation District
47.5 MW
Nameplate Capacity
1
Generators
unit
Geothermal
Technology
1996
Operating Since
Coordinates
33.1570, -115.6386
County
Imperial, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | CalEnergy Operating Corporation | CalEnergy Operating | — |
| Owner(s) | CE Generation | Berkshire Hathaway | — |
| Status | Operating | operating | — |
Salton Sea Power Gen Co - Unit 4 is a 47.5 MW geothermal power plant located in Imperial County, California. The plant began operating in 1996 and has one generator. It is owned by Berkshire Hathaway and operated by CalEnergy Operating Corporation. The plant's primary fuel source is geothermal energy.
In the most recent year of reported data, Salton Sea Power Gen Co - Unit 4 generated 179,841 MWh of electricity, achieving a capacity factor of 42.9%. The plant operates within the Imperial Irrigation District balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Among geothermal plants in California, it ranks 16th out of 33 in size, and nationally it ranks 25th out of 70.
Generated from EIA, GEM, and public data sources
Grid Region
California (non-ISO)
Market
Bilateral Market
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
29.6K MWh
Latest Month
179.8K MWh
Annual Generation
42.9%
Capacity Factor
CO₂ Intensity
89 lb/MWh
NOx
0.001 lb/MWh
SO₂
2013
$2,851/kW
Est. Construction Cost
Total estimated cost: $135.4M
This plant is in a bilateral market territory without organized wholesale pricing. Nodal pricing data is not available.
Last updated 2026-03-26
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ask pi about Salton Sea Power Gen Co - Unit 4Imperial Irrigation District (IID)
Grid Voltage
92.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0.000 lb/MWh
CH₄
—
N₂O
—
Capacity Factor
76.8%
Annual Net Gen
320 GWh
CO₂eq
89 lb/MWh
Subregion
WECC Southwest