In Sherman County, Oregon (OR). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

2 GW of nameplate capacity across 16 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 John Day 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 "John Day LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is John Day still running?

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

John Day

John Day is a 2 GW hydroelectric power plant in Sherman County, Oregon, operated by USACE Northwestern Division. EIA-860M lists 16 generating units here. Its units entered service between 1968 and 1971.

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: 2,160 MW; 2,052 MW net summer
Generating units: 16
In service: 1968–1971
EIA plant ID: 3082

Where it is

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County: Sherman County, Oregon
Coordinates: 45.7164, -120.6941
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 (11) · Out of service but expected to return to service in next calendar year (4) · Out of service and NOT expected to return to service in next calendar year (1)

Every plant USACE Northwestern Division reports to EIA →

John Day: FAQ

Where is John Day?: In Sherman County, Oregon (OR). 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 John Day?: 2 GW of nameplate capacity across 16 units, as of the EIA-860M release for 2026-07.
Who owns John Day?: 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 John Day 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 "John Day LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is John Day still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.