Libby
Hydro power plant in Lincoln County, Montana. 420 MW of nameplate capacity across 4 generators, operated by USACE Northwestern Division.
Also known as Libby Dam Powerhouse · EIA plant 6172
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 420 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- August 1975First generator online
- Operator
- USACE Northwestern DivisionEIA operator ID 19400
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Lincoln County, MT48.4098, −115.3143
- EIA plant ID
- 6172EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Libby produces
Free · EIA-923Net generation, 2025
1.61 TWh
1,607,893 MWh, final
Capacity factor, 2025
35.0%
2024: 41.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
1.5–2.3
TWh a year. Low 2019, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,762,671 | Not reported | 12 of 12 |
| 2001 | 1,116,106 | Not reported | 12 of 12 |
| 2002 | 2,256,895 | Not reported | 12 of 12 |
| 2003 | 1,908,585 | Not reported | 12 of 12 |
| 2004 | 2,005,877 | Not reported | 12 of 12 |
| 2005 | 2,355,842 | Not reported | 12 of 12 |
| 2006 | 2,190,677 | Not reported | 12 of 12 |
| 2007 | 2,344,156 | Not reported | 12 of 12 |
| 2008 | 1,950,437 | Not reported | 12 of 12 |
| 2009 | 1,574,357 | Not reported | 12 of 12 |
| 2010 | 1,701,918 | 37.0% | 12 of 12 |
| 2011 | 2,450,665 | 53.3% | 12 of 12 |
| 2012 | 2,793,645 | 60.6% | 12 of 12 |
| 2013 | 2,306,062 | 50.1% | 12 of 12 |
| 2014 | 2,513,693 | 54.7% | 12 of 12 |
| 2015 | 1,757,669 | 38.2% | 12 of 12 |
| 2016 | 2,185,485 | 47.4% | 12 of 12 |
| 2017 | 2,281,280 | 49.6% | 12 of 12 |
| 2018 | 2,056,393 | 44.7% | 12 of 12 |
| 2019 | 1,511,427 | 32.9% | 12 of 12 |
| 2020 | 2,310,881 | 50.1% | 12 of 12 |
| 2021 | 1,845,254 | 40.1% | 12 of 12 |
| 2022 | 2,117,883 | 46.1% | 12 of 12 |
| 2023 | 1,581,208 | 34.4% | 12 of 12 |
| 2024 | 1,890,551 | 41.0% | 12 of 12 |
| 2025 | 1,607,893 | 35.0% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 105.0 | August 1975 |
| 3 | Conventional Hydroelectric | 105.0 | January 1976 |
| 4 | Conventional Hydroelectric | 105.0 | April 1976 |
| 5 | Conventional Hydroelectric | 105.0 | September 1984 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists USACE Northwestern Division as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Libby
More plants operated by USACE Northwestern Division
Questions about Libby
How much power does Libby produce?
Libby reported 1,607,893 MWh (1.61 TWh) of net generation in 2025, a 35.0% capacity factor on 420 MW of nameplate capacity.
Where is Libby?
Libby is in Lincoln County, Montana, at 48.4098, −115.3143. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Libby?
EIA-860M for August 2026 lists USACE Northwestern Division as the operator (EIA operator ID 19400). The operator is not always the owner.
When did Libby start operating?
Its first generator began operating in August 1975, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page