Hungry Horse
Flathead County, Montana · EIA plant ID 2203 · Operator: U S Bureau of Reclamation
Nameplate428MWSummer 428 MW
Generators4in service
Net generation633GWh12 mo to Dec 2025
Capacity factor17%hydro units, summer MW
Heat rate—thermal plants only
First online1952
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 537.4 | 14.3% | — |
| 2002 | 994.7 | 26.5% | — |
| 2003 | 729 | 19.4% | — |
| 2004 | 813 | 21.6% | — |
| 2005 | 850.9 | 22.7% | — |
| 2006 | 1,055.5 | 28.1% | — |
| 2007 | 777.4 | 20.7% | — |
| 2008 | 1,217.4 | 32.4% | — |
| 2009 | 742.3 | 19.8% | — |
| 2010 | 834.2 | 22.3% | — |
| 2011 | 1,378.4 | 36.8% | — |
| 2012 | 1,062.7 | 28.3% | — |
| 2013 | 1,023.4 | 27.3% | — |
| 2014 | 1,004.9 | 26.8% | — |
| 2015 | 1,000.3 | 26.7% | — |
| 2016 | 835.2 | 22.2% | — |
| 2017 | 1,034.5 | 27.6% | — |
| 2018 | 999 | 26.6% | — |
| 2019 | 658.9 | 17.6% | — |
| 2020 | 925.7 | 24.6% | — |
| 2021 | 953.3 | 25.4% | — |
| 2022 | 1,008 | 26.9% | — |
| 2023 | 650.2 | 17.3% | — |
| 2024 | 730.3 | 19.4% | — |
| 2025 | 632.9 | 16.9% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 107 | 107 | Oct 1952 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 107 | 107 | Dec 1952 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 107 | 107 | Jul 1953 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 107 | 107 | Jul 1953 | Operating | — | coming soon |
Owner / operator
Operator: U S Bureau of Reclamation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| U S Bureau of Reclamation | 100.0% | 428 MW |
Nearby plants
Within 80 km.
| Stoltze CoGen1 | 3 MW | 17.5 km |
| Flathead Landfill to Gas Energy Facility | 3 MW | 24.4 km |
| Big Fork | 4 MW | 31.7 km |
| Kerr | 228 MW | 75.6 km |