Libby
Libby is a 525 MW hydroelectric power plant in Lincoln County, Montana, operated by USACE Northwestern Division. EIA-860M lists 5 generating units here. Its units entered service between 1975 and 1984.
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
- 525 MW
- 525 MW net summer
- Generating units
- 5
- In service
- 1975–1984
- EIA plant ID
- 6172
Where it is
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- County
- Lincoln County, Montana
- Coordinates
- 48.4098, -115.3143
- Balancing authority
- BPAT
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- USACE Northwestern Division
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating (4) · Out of service but expected to return to service in next calendar year (1)
Libby: FAQ
- Where is Libby?
- In Lincoln 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 Libby?
- 525 MW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.
- Who owns Libby?
- EIA-860M names USACE Northwestern Division 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 Libby LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — USACE Northwestern Division 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 "Libby LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Libby still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.