TransAlta Wyoming Wind
Uinta County, Wyoming · EIA plant ID 56093 · Operator: TransAlta Wyoming Wind LLC
Nameplate144MWSummer 142 MW
Generators1in service
Net generation321GWh12 mo to Dec 2025
Capacity factor26%wind units, summer MW
Heat rate—thermal plants only
First online2003
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), wind 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) |
|---|---|---|---|
| 2003 | 0.1 | 0.1% | — |
| 2004 | 324.7 | 25.7% | — |
| 2005 | 297.2 | 23.6% | — |
| 2006 | 333 | 26.4% | — |
| 2007 | 348.6 | 27.6% | — |
| 2008 | 362.9 | 28.7% | — |
| 2009 | 352.2 | 27.9% | — |
| 2010 | 333 | 26.4% | — |
| 2011 | 388.6 | 30.8% | — |
| 2012 | 384.1 | 30.4% | — |
| 2013 | 348 | 27.6% | — |
| 2014 | 402.9 | 31.9% | — |
| 2015 | 307 | 24.3% | — |
| 2016 | 362.1 | 28.6% | — |
| 2017 | 364.1 | 28.9% | — |
| 2018 | 350.2 | 27.8% | — |
| 2019 | 343.5 | 27.6% | — |
| 2020 | 377.1 | 30.2% | — |
| 2021 | 356 | 28.6% | — |
| 2022 | 341.3 | 27.4% | — |
| 2023 | 264.6 | 21.2% | — |
| 2024 | 318.8 | 25.5% | — |
| 2025 | 321.4 | 25.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GE15 | Onshore Wind Turbine | WT | 144 | 142.2 | Dec 2003 | Operating | — | vestas V80-1.8 |
Owner / operator
Operator: TransAlta Wyoming Wind LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| TransAlta Wyoming Wind LLC | 100.0% | 144 MW |
Nearby plants
Within 80 km.
| Mountain Wind Power II LLC | 80 MW | 2.8 km |
| Mountain Wind Power LLC | 61 MW | 6.3 km |
| Kemmerer Unit 1 | — | 46.5 km |
| Naughton | 707 MW | 52.5 km |
| Sage Solar I-III | 58 MW | 68.1 km |
| Genesis Alkali | 41 MW | 72.3 km |