Where is Grand Coulee?

In Grant County, Washington (WA). 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 Grand Coulee?

7 GW of nameplate capacity across 33 units, as of the EIA-860M release for 2026-07.

Who owns Grand Coulee?

EIA-860M names U S Bureau of Reclamation 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 Grand Coulee LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — U S Bureau of Reclamation 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 "Grand Coulee LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Grand Coulee still running?

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

Grand Coulee

Grand Coulee is a 7 GW hydroelectric power plant in Grant County, Washington, operated by U S Bureau of Reclamation. EIA-860M lists 33 generating units here. Its units entered service between 1941 and 1984.

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: 6,809 MW; 7,079 MW net summer
Generating units: 33
In service: 1941–1984
EIA plant ID: 6163

Where it is

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County: Grant County, Washington
Coordinates: 47.9575, -118.9773
Balancing authority: BPAT
Sector: Electric Utility

Units, technology and status

Operator of record: U S Bureau of Reclamation
Primary energy source: Hydro
Technologies: Conventional Hydroelectric, Hydroelectric Pumped Storage
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Hydro 6 GW, Pumped storage 314 MW. It is filed here under Hydro, the source with the most capacity.

Every plant U S Bureau of Reclamation reports to EIA →

Grand Coulee: FAQ

Where is Grand Coulee?: In Grant County, Washington (WA). 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 Grand Coulee?: 7 GW of nameplate capacity across 33 units, as of the EIA-860M release for 2026-07.
Who owns Grand Coulee?: EIA-860M names U S Bureau of Reclamation 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 Grand Coulee LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — U S Bureau of Reclamation 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 "Grand Coulee LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Grand Coulee still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.