In Pend Oreille 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 Box Canyon?

90 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.

EIA-860M names PUD No 1 of Pend Oreille County - (WA) 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 Box Canyon LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — PUD No 1 of Pend Oreille County - (WA) 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 "Box Canyon LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Box Canyon still running?

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

Box Canyon

Box Canyon is a 90 MW hydroelectric power plant in Pend Oreille County, Washington, operated by PUD No 1 of Pend Oreille County - (WA). EIA-860M lists 4 generating units here. Its units entered service in 1955.

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: 90 MW; 90 MW net summer
Generating units: 4
In service: 1955
EIA plant ID: 3891

Where it is

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County: Pend Oreille County, Washington
Coordinates: 48.7809, -117.4183
Balancing authority: AVA
Sector: Electric Utility

Units, technology and status

Operator of record: PUD No 1 of Pend Oreille County - (WA)
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating

Every plant PUD No 1 of Pend Oreille County - (WA) reports to EIA →

Box Canyon: FAQ

Where is Box Canyon?: In Pend Oreille 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 Box Canyon?: 90 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns Box Canyon?: EIA-860M names PUD No 1 of Pend Oreille County - (WA) 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 Box Canyon LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — PUD No 1 of Pend Oreille County - (WA) 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 "Box Canyon LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Box Canyon still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.