Yellowstone Energy LP
Yellowstone County, Montana · EIA plant ID 50931 · Operator: Yellowstone Energy LP
Nameplate68MWSummer 52 MW
Generators1in service
Net generation354GWh12 mo to Aug 2026
Capacity factor78%gas/coal/oil units, summer MW
Heat rate10,491Btu/kWhfossil units, electric fuel, HHV
First online1995Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 426 | 88.4% | 12,183 |
| 2002 | 348.1 | 72.3% | 13,861 |
| 2003 | 378.1 | 78.5% | 14,316 |
| 2004 | 433.7 | 89.8% | 9,838 |
| 2005 | 412.5 | 85.6% | 9,838 |
| 2006 | 408 | 84.7% | 9,838 |
| 2007 | 481.7 | 100.0% | 9,838 |
| 2008 | 404.9 | 83.8% | 11,073 |
| 2009 | 479.3 | 99.5% | 10,996 |
| 2010 | 397.5 | 87.3% | 11,052 |
| 2011 | 444.3 | 97.5% | 11,021 |
| 2012 | 454.8 | 99.6% | 10,997 |
| 2013 | 448.7 | 98.5% | 11,076 |
| 2014 | 404.7 | 88.8% | 11,020 |
| 2015 | 500.1 | 109.8% | 10,933 |
| 2016 | 452 | 99.0% | 10,390 |
| 2017 | 459.4 | 100.9% | 10,494 |
| 2018 | 442.9 | 97.2% | 10,371 |
| 2019 | 459.7 | 100.9% | 10,458 |
| 2020 | 459.3 | 100.6% | 10,713 |
| 2021 | 454.3 | 99.7% | 10,771 |
| 2022 | 459.1 | 100.8% | 10,590 |
| 2023 | 490.8 | 107.7% | 10,616 |
| 2024 | 381.8 | 83.6% | 10,773 |
| 2025 | 458.4 | 100.6% | 10,499 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Petroleum Coke | ST | 68 | 52 | Jun 1995 | Operating | — | coming soon |
Owner / operator
Operator: Yellowstone Energy LP. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Yellowstone Energy LP | 100.0% | 68 MW |
Nearby plants
Within 80 km.
| Phillips 66 Billings Refinery | 2 MW | 6.2 km |
| Western Sugar Cooperative - Billings | 2 MW | 7.6 km |
| MTSUN | 80 MW | 14.4 km |
| Beartooth Energy Storage LLC | — | 22.7 km |
| Yellowstone County Generating Station | 207 MW | 30.9 km |
| Two Dot Wind Broadview East LLC | 2 MW | 43.6 km |