- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
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Big Fork
Power plant · Hydro
Key facts
Power plant · Hydroran 68% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1910
- Net generation, 2025
- 24,572 MWh
- Grid
- 14 kV to PacifiCorp (PACE)
- Location
- Flathead County, Montana
- Operated by
- PacifiCorpSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 24,572
MWh - Fuel burned, 2025
- 83,839
MMBtu - Capacity factor, 2025
- 68.4
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 24,572 | 83,839 | 68.4% | — |
| 2024 | 21,336 | 72,800 | 59.2% | — |
| 2023 | 25,104 | 85,656 | 69.9% | — |
| 2022 | 26,340 | 89,873 | 73.3% | — |
| 2021 | 28,399 | 251,161 | 79.1% | — |
| 2020 | 27,032 | 236,989 | 75.1% | — |
| 2019 | 27,204 | 242,251 | 75.7% | — |
| 2018 | 26,132 | 237,905 | 72.8% | — |
| 2017 | 21,447 | 197,591 | 59.7% | — |
| 2016 | 29,483 | 272,187 | 81.9% | — |
| 2015 | 26,515 | 247,094 | 73.8% | — |
| 2014 | 31,240 | 297,092 | 87.0% | — |
| 2013 | 30,165 | 287,806 | 84.0% | — |
| 2012 | 33,426 | 318,081 | 92.8% | — |
| 2011 | 34,671 | 336,861 | 96.5% | — |
| 2010 | 32,262 | 314,748 | 89.8% | — |
| 2009 | 28,977 | 282,817 | 80.7% | — |
| 2008 | 27,562 | 271,596 | 76.5% | — |
| 2007 | 24,435 | 241,514 | 68.0% | — |
| 2006 | 31,391 | 311,367 | 87.4% | — |
| 2005 | 30,861 | 308,579 | 85.9% | — |
| 2004 | 30,084 | 301,502 | 83.5% | — |
| 2003 | 26,555 | 271,950 | 73.9% | — |
| 2002 | 19,523 | 198,607 | 54.4% | — |
| 2001 | 17,729 | 183,194 | 49.4% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
2 sourcesSources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)