Where is Main Canal Headworks?

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 Main Canal Headworks?

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

Who owns Main Canal Headworks?

EIA-860M names Columbia Basin Hydropower 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 Main Canal Headworks LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Columbia Basin Hydropower 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 "Main Canal Headworks LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Main Canal Headworks still running?

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

Main Canal Headworks

Main Canal Headworks is a 27 MW hydroelectric power plant in Grant County, Washington, operated by Columbia Basin Hydropower. EIA-860M lists 1 generating unit here. Its unit entered service in 1987.

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: 26.8 MW; 26.8 MW net summer
Generating units: 1
In service: 1987
EIA plant ID: 56698

Where it is

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County: Grant County, Washington
Coordinates: 47.6164, -119.2992
Balancing authority: AVA
Sector: Electric Utility

Units, technology and status

Operator of record: Columbia Basin Hydropower
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating

Every plant Columbia Basin Hydropower reports to EIA →

Main Canal Headworks: FAQ

Where is Main Canal Headworks?: 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 Main Canal Headworks?: 27 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Main Canal Headworks?: EIA-860M names Columbia Basin Hydropower 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 Main Canal Headworks LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Columbia Basin Hydropower 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 "Main Canal Headworks LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Main Canal Headworks still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.