- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Yellowtail: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Yellowtail
Power plant · Hydro
Key facts
Power plant · Hydroran 23% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1966
- Net generation, 2025
- 566,188 MWh
- Grid
- 230 kV to WAPA-- Western Area Power Administration (WAUW)
- Location
- Big Horn County, Montana
- Operated by
- U S Bureau of ReclamationSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 566,188
MWh - Fuel burned, 2025
- 1,931,835
MMBtu - Capacity factor, 2025
- 23.2
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 566,188 | 1,931,835 | 23.2% | — |
| 2024 | 798,419 | 2,724,206 | 32.7% | — |
| 2023 | 845,979 | 2,886,479 | 34.7% | — |
| 2022 | 685,935 | 2,340,410 | 28.1% | — |
| 2021 | 512,187 | 4,529,782 | 21.0% | — |
| 2020 | 780,391 | 6,841,689 | 31.9% | — |
| 2019 | 913,986 | 8,139,045 | 37.5% | — |
| 2018 | 1,059,019 | 9,641,309 | 43.5% | — |
| 2017 | 1,124,349 | 10,358,629 | 46.1% | — |
| 2016 | 690,297 | 6,372,822 | 28.2% | — |
| 2015 | 744,118 | 6,934,434 | 30.5% | — |
| 2014 | 1,095,850 | 10,421,533 | 45.0% | — |
| 2013 | 471,034 | 4,494,135 | 19.3% | — |
| 2012 | 527,731 | 5,021,887 | 21.6% | — |
| 2011 | 1,123,986 | 10,920,647 | 46.1% | — |
| 2010 | 830,746 | 8,104,758 | 34.1% | — |
| 2009 | 898,516 | 8,769,516 | 36.9% | — |
| 2008 | 769,281 | 7,580,494 | 31.5% | — |
| 2007 | 380,434 | 3,760,210 | 15.6% | — |
| 2006 | 475,182 | 4,713,328 | 19.5% | — |
| 2005 | 603,803 | 6,037,426 | 24.8% | — |
| 2004 | 320,996 | 3,217,022 | 13.1% | — |
| 2003 | 325,278 | 3,331,172 | 13.4% | — |
| 2002 | 344,399 | 3,503,571 | 14.1% | — |
| 2001 | 474,227 | 4,900,188 | 19.5% | — |
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
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)