Where is Grant County?

In Grant 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 Grant County?

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

Who owns Grant County?

EIA-860M names Wisconsin Power & Light Co 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 Grant County LLC?

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

Is Grant County still running?

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

Grant County

Grant County is a 300 MW solar farm in Grant County, Wisconsin, operated by Wisconsin Power & Light Co. EIA-860M lists 2 generating units here, inside MISO. Its units entered service between 2024 and 2025.

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: 300 MW; 300 MW net summer
Generating units: 2
In service: 2024–2025
EIA plant ID: 65007

Where it is

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County: Grant County, Wisconsin
Coordinates: 42.719, -90.701
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Wisconsin Power & Light Co
Primary energy source: Solar
Technologies: Batteries, Solar Photovoltaic
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Solar 200 MW, Battery 100 MW. It is filed here under Solar, the source with the most capacity.

Every plant Wisconsin Power & Light Co reports to EIA →

Grant County: FAQ

Where is Grant County?: In Grant 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 Grant County?: 300 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Grant County?: EIA-860M names Wisconsin Power & Light Co 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 Grant County LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Wisconsin Power & Light Co 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 "Grant County LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Grant County still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.