Coso Finance Partners

Coso Finance Partners is a 92 MW geothermal power plant in Inyo County, California, operated by Coso Operating Co LLC. EIA-860M lists 3 generating units here, inside CAISO. Its units entered service between 1987 and 1988.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity
92.2 MW
81.2 MW net summer
Generating units
3
In service
1987–1988
EIA plant ID
10873

Where it is

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County
Inyo County, California
Coordinates
36.0372, -117.7981
Balancing authority
CISO
Sector
IPP Non-CHP

Units, technology and status

Operator of record
Coso Operating Co LLC
Primary energy source
Geothermal
Technologies
Geothermal
Status
Operating

Every plant Coso Operating Co LLC reports to EIA →

Coso Finance Partners: FAQ

Where is Coso Finance Partners?
In Inyo County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Coso Finance Partners?
92 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
Who owns Coso Finance Partners?
EIA-860M names Coso Operating Co LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is Coso Finance Partners still running?
EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.