Prairie River
Prairie River is a 1 MW hydroelectric power plant in Itasca County, Minnesota, operated by ALLETE, Inc.. EIA-860M lists 2 generating units here, inside MISO. Its units entered service in 1920.
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 MW
- 0.7 MW net summer
- Generating units
- 2
- In service
- 1920
- EIA plant ID
- 378
Where it is
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- County
- Itasca County, Minnesota
- Coordinates
- 47.2872, -93.4983
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- ALLETE, Inc.
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Prairie River: FAQ
- Where is Prairie River?
- In Itasca 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 River?
- 1 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Prairie River?
- EIA-860M names ALLETE, Inc. 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 River LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — ALLETE, Inc. 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 River LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Prairie River still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.