Where is Washington Island?

In Door County, Wisconsin (WI). 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 Washington Island?

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

Who owns Washington Island?

EIA-860M names Washington Island El Coop, Inc 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 Washington Island LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Washington Island El Coop, Inc 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 "Washington Island LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Washington Island still running?

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

Washington Island

Washington Island is a 5 MW oil-fired power plant in Door County, Wisconsin, operated by Washington Island El Coop, Inc. EIA-860M lists 7 generating units here, inside MISO. Its units entered service between 1945 and 1997.

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: 5 MW; 5 MW net summer
Generating units: 7
In service: 1945–1997
EIA plant ID: 4148

Where it is

Loading map…

County: Door County, Wisconsin
Coordinates: 45.3709, -86.9308
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Washington Island El Coop, Inc
Primary energy source: Petroleum
Technologies: Petroleum Liquids
Status: Operating

Every plant Washington Island El Coop, Inc reports to EIA →

Washington Island: FAQ

Where is Washington Island?: In Door County, Wisconsin (WI). 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 Washington Island?: 5 MW of nameplate capacity across 7 units, as of the EIA-860M release for 2026-07.
Who owns Washington Island?: EIA-860M names Washington Island El Coop, Inc 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 Washington Island LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Washington Island El Coop, Inc 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 "Washington Island LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Washington Island still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.