Where is Prairie Creek?

In Linn County, Iowa (IA). 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 Prairie Creek?

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

Who owns Prairie Creek?

EIA-860M names Interstate Power and 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 Prairie Creek LLC?

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

Is Prairie Creek still running?

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

Prairie Creek

Prairie Creek is a 199 MW natural gas power plant in Linn County, Iowa, operated by Interstate Power and Light Co. EIA-860M lists 2 generating units here, inside MISO. Its units entered service between 1958 and 1967.

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: 198.8 MW; 141 MW net summer
Generating units: 2
In service: 1958–1967
EIA plant ID: 1073

Where it is

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County: Linn County, Iowa
Coordinates: 41.944, -91.6392
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Interstate Power and Light Co
Primary energy source: Natural gas
Technologies: Conventional Steam Coal, Natural Gas Steam Turbine
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Natural gas 149 MW, Coal 50 MW. It is filed here under Natural gas, the source with the most capacity.

Every plant Interstate Power and Light Co reports to EIA →

Prairie Creek: FAQ

Where is Prairie Creek?: In Linn County, Iowa (IA). 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 Prairie Creek?: 199 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Prairie Creek?: EIA-860M names Interstate Power and 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 Prairie Creek LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Interstate Power and 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 "Prairie Creek LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Prairie Creek still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.