Fort Peck
Fort Peck is a 180 MW hydroelectric power plant in McCone County, Montana, operated by USACE-Omaha. EIA-860M lists 5 generating units here. Its units entered service between 1943 and 1961.
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
- 179.7 MW
- 218 MW net summer
- Generating units
- 5
- In service
- 1943–1961
- EIA plant ID
- 6623
Where it is
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- County
- McCone County, Montana
- Coordinates
- 48.0122, -106.4123
- Balancing authority
- WAUW
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- USACE-Omaha
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating (4) · Out of service and NOT expected to return to service in next calendar year (1)
Fort Peck: FAQ
- Where is Fort Peck?
- In McCone County, Montana (MT). 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 Fort Peck?
- 180 MW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.
- Who owns Fort Peck?
- EIA-860M names USACE-Omaha 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 Fort Peck LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — USACE-Omaha 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 "Fort Peck LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Fort Peck still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.