TransAlta Wyoming Wind
Wind power plant in Uinta County, Wyoming. 144 MW of nameplate capacity across 1 generator, operated by TransAlta Wyoming Wind LLC.
Also known as Evanston (Wyoming Wind Energy Center) · EIA plant 56093
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 144 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2003First generator online
- Operator
- TransAlta Wyoming Wind LLCEIA operator ID 58608
- Grid
- PACEBalancing authority PACE
- Price nodes
- None linkedNo verified ISO node
- Location
- Uinta County, WY41.2874, −110.5556
- EIA plant ID
- 56093EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power TransAlta Wyoming Wind produces
Free · EIA-923Net generation, 2025
321 GWh
321,444 MWh, final
Capacity factor, 2025
25.5%
2024: 25.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
264.6–377.1
GWh a year. Low 2023, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 89 | Not reported | 1 of 12 |
| 2004 | 324,714 | Not reported | 12 of 12 |
| 2005 | 297,224 | Not reported | 12 of 12 |
| 2006 | 332,959 | Not reported | 12 of 12 |
| 2007 | 348,565 | Not reported | 12 of 12 |
| 2008 | 362,899 | Not reported | 12 of 12 |
| 2009 | 352,175 | Not reported | 12 of 12 |
| 2010 | 332,972 | 26.4% | 12 of 12 |
| 2011 | 388,558 | 30.8% | 12 of 12 |
| 2012 | 384,066 | 30.4% | 12 of 12 |
| 2013 | 348,038 | 27.6% | 12 of 12 |
| 2014 | 402,876 | 31.9% | 12 of 12 |
| 2015 | 306,966 | 24.3% | 12 of 12 |
| 2016 | 362,139 | 28.6% | 12 of 12 |
| 2017 | 364,125 | 28.9% | 12 of 12 |
| 2018 | 350,158 | 27.8% | 12 of 12 |
| 2019 | 343,458 | 27.2% | 12 of 12 |
| 2020 | 377,140 | 29.8% | 12 of 12 |
| 2021 | 355,971 | 28.2% | 12 of 12 |
| 2022 | 341,330 | 27.1% | 12 of 12 |
| 2023 | 264,554 | 21.0% | 12 of 12 |
| 2024 | 318,843 | 25.2% | 12 of 12 |
| 2025 | 321,444 | 25.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GE15 | Onshore Wind Turbine | 144.0 | December 2003 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists TransAlta Wyoming Wind LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about TransAlta Wyoming Wind
How much power does TransAlta Wyoming Wind produce?
TransAlta Wyoming Wind reported 321,444 MWh (321 GWh) of net generation in 2025, a 25.5% capacity factor on 144 MW of nameplate capacity.
Where is TransAlta Wyoming Wind?
TransAlta Wyoming Wind is in Uinta County, Wyoming, at 41.2874, −110.5556. It is in the PacifiCorp - East balancing area (PACE).
Who operates TransAlta Wyoming Wind?
EIA-860M for August 2026 lists TransAlta Wyoming Wind LLC as the operator (EIA operator ID 58608). The operator is not always the owner.
When did TransAlta Wyoming Wind start operating?
Its first generator began operating in December 2003, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Project names from the USGS U.S. Wind Turbine Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page