Where is Ameresco Ox Mountain?

In San Mateo 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 Ameresco Ox Mountain?

11 MW of nameplate capacity across 6 units, as of the EIA-860M release for 2026-07.

Who owns Ameresco Ox Mountain?

EIA-860M names AMERESCO Ox Mountain Energy 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 Ameresco Ox Mountain LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — AMERESCO Ox Mountain Energy 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 "Ameresco Ox Mountain LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Ameresco Ox Mountain still running?

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

Ameresco Ox Mountain

Ameresco Ox Mountain is a 11 MW biomass power plant in San Mateo County, California, operated by AMERESCO Ox Mountain Energy LLC. EIA-860M lists 6 generating units here, inside CAISO. Its units entered service in 2008.

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: 11.4 MW; 10.8 MW net summer
Generating units: 6
In service: 2008
EIA plant ID: 56895

Where it is

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County: San Mateo County, California
Coordinates: 37.5, -122.4
Balancing authority: CISO
Sector: IPP Non-CHP

Units, technology and status

Operator of record: AMERESCO Ox Mountain Energy LLC
Primary energy source: Biomass
Technologies: Landfill Gas
Status: Operating

Every plant AMERESCO Ox Mountain Energy LLC reports to EIA →

Ameresco Ox Mountain: FAQ

Where is Ameresco Ox Mountain?: In San Mateo 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 Ameresco Ox Mountain?: 11 MW of nameplate capacity across 6 units, as of the EIA-860M release for 2026-07.
Who owns Ameresco Ox Mountain?: EIA-860M names AMERESCO Ox Mountain Energy 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 Ameresco Ox Mountain LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — AMERESCO Ox Mountain Energy 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 "Ameresco Ox Mountain LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Ameresco Ox Mountain still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.