Prairie Island
Prairie Island is a 1 GW nuclear power plant in Goodhue County, Minnesota, operated by Northern States Power Co - Minnesota. EIA-860M lists 2 generating units here, inside MISO. Its units entered service in 1974.
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
- 1,186.2 MW
- 1,040 MW net summer
- Generating units
- 2
- In service
- 1974
- EIA plant ID
- 1925
Where it is
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- County
- Goodhue County, Minnesota
- Coordinates
- 44.622, -92.6333
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Northern States Power Co - Minnesota
- Primary energy source
- Nuclear
- Technologies
- Nuclear
- Status
- Operating
Every plant Northern States Power Co - Minnesota reports to EIA →
Prairie Island: FAQ
- Where is Prairie Island?
- In Goodhue County, Minnesota (MN). 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 Island?
- 1 GW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Prairie Island?
- EIA-860M names Northern States Power Co - Minnesota 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 Island LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Northern States Power Co - Minnesota 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 Island LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Prairie Island still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.