Where is Los Medanos Energy Center?

In Contra Costa 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 Los Medanos Energy Center?

678 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.

Who owns Los Medanos Energy Center?

EIA-860M names Los Medanos Energy Center LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as Los Medanos Energy Center LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Los Medanos Energy Center LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Los Medanos Energy Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Los Medanos Energy Center still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Los Medanos Energy Center

Los Medanos Energy Center is a 678 MW natural gas power plant in Contra Costa County, California, operated by Los Medanos Energy Center LLC. EIA-860M lists 3 generating units here, inside CAISO. Its units entered service in 2001.

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: 678.3 MW; 559 MW net summer
Generating units: 3
In service: 2001
EIA plant ID: 55217

Where it is

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County: Contra Costa County, California
Coordinates: 38.0301, -121.873
Balancing authority: CISO
Sector: IPP CHP

Units, technology and status

Operator of record: Los Medanos Energy Center LLC
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combined Cycle
Status: Operating

Every plant Los Medanos Energy Center LLC reports to EIA →

Los Medanos Energy Center: FAQ

Where is Los Medanos Energy Center?: In Contra Costa 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 Los Medanos Energy Center?: 678 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
Who owns Los Medanos Energy Center?: EIA-860M names Los Medanos Energy Center LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Los Medanos Energy Center LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Los Medanos Energy Center LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Los Medanos Energy Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Los Medanos Energy Center still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.