In Walla Walla 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 Ice Harbor?

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

EIA-860M names USACE Northwestern Division 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 Ice Harbor LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — USACE Northwestern Division 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 "Ice Harbor LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Ice Harbor still running?

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

Ice Harbor

Ice Harbor is a 603 MW hydroelectric power plant in Walla Walla County, Washington, operated by USACE Northwestern Division. EIA-860M lists 6 generating units here. Its units entered service between 1962 and 1976.

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: 603 MW; 513 MW net summer
Generating units: 6
In service: 1962–1976
EIA plant ID: 3925

Where it is

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County: Walla Walla County, Washington
Coordinates: 46.2498, -118.8798
Balancing authority: BPAT
Sector: Electric Utility

Units, technology and status

Operator of record: USACE Northwestern Division
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating (4) · Out of service but expected to return to service in next calendar year (2)

Every plant USACE Northwestern Division reports to EIA →

Ice Harbor: FAQ

Where is Ice Harbor?: In Walla Walla 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 Ice Harbor?: 603 MW of nameplate capacity across 6 units, as of the EIA-860M release for 2026-07.
Who owns Ice Harbor?: EIA-860M names USACE Northwestern Division 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 Ice Harbor LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — USACE Northwestern Division 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 "Ice Harbor LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Ice Harbor still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.