Where is Alliant Energy Neenah?

In Winnebago 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 Alliant Energy Neenah?

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

Who owns Alliant Energy Neenah?

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 Alliant Energy Neenah 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 "Alliant Energy Neenah LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Alliant Energy Neenah still running?

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

Alliant Energy Neenah

Alliant Energy Neenah is a 371 MW natural gas power plant in Winnebago County, Wisconsin, operated by Wisconsin Power & Light Co. EIA-860M lists 2 generating units here, inside MISO. Its units entered service in 2000.

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: 371 MW; 401.1 MW net summer
Generating units: 2
In service: 2000
EIA plant ID: 55135

Where it is

Loading map…

County: Winnebago County, Wisconsin
Coordinates: 44.1936, -88.5064
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Wisconsin Power & Light Co
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine
Status: Operating

Every plant Wisconsin Power & Light Co reports to EIA →

Alliant Energy Neenah: FAQ

Where is Alliant Energy Neenah?: In Winnebago 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 Alliant Energy Neenah?: 371 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Alliant Energy Neenah?: 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 Alliant Energy Neenah 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 "Alliant Energy Neenah LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Alliant Energy Neenah still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.