In Plumas 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.

1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

EIA-860M names Pacific Gas & Electric Co. 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 Oak Flat LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Pacific Gas & Electric Co. 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 "Oak Flat LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Oak Flat still running?

EIA-860M files it as "Out of service but expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Oak Flat

Oak Flat is a 1 MW hydroelectric power plant in Plumas County, California, operated by Pacific Gas & Electric Co.. EIA-860M lists 1 generating unit here, inside CAISO. Its unit entered service in 1985.

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: 1.4 MW; 1.3 MW net summer
Generating units: 1
In service: 1985
EIA plant ID: 626

Where it is

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County: Plumas County, California
Coordinates: 40.0753, -121.1614
Balancing authority: CISO
Sector: Electric Utility

Units, technology and status

Operator of record: Pacific Gas & Electric Co.
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Out of service but expected to return to service in next calendar year

Every plant Pacific Gas & Electric Co. reports to EIA →

Oak Flat: FAQ

Where is Oak Flat?: In Plumas 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 Oak Flat?: 1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Oak Flat?: EIA-860M names Pacific Gas & Electric Co. 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 Oak Flat LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Pacific Gas & Electric Co. 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 "Oak Flat LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Oak Flat still running?: EIA-860M files it as "Out of service but expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.