In Marathon 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.

946 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.

EIA-860M names Wisconsin Public Service Corp 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 Weston LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Wisconsin Public Service Corp 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 "Weston LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Weston still running?

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

Weston

Weston is a 946 MW coal power plant in Marathon County, Wisconsin, operated by Wisconsin Public Service Corp. EIA-860M lists 2 generating units here, inside MISO. Its units entered service between 1981 and 2008.

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: 945.5 MW; 887.9 MW net summer
Generating units: 2
In service: 1981–2008
EIA plant ID: 4078

Where it is

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County: Marathon County, Wisconsin
Coordinates: 44.8606, -89.6553
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Wisconsin Public Service Corp
Primary energy source: Coal
Technologies: Conventional Steam Coal
Status: Operating

Every plant Wisconsin Public Service Corp reports to EIA →

Weston: FAQ

Where is Weston?: In Marathon 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 Weston?: 946 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Weston?: EIA-860M names Wisconsin Public Service Corp 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 Weston LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Wisconsin Public Service Corp 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 "Weston LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Weston still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.