Judith Gap Wind Energy Center
Wind power plant in Wheatland County, Montana. 135 MW of nameplate capacity across 1 generator, operated by Invenergy Services LLC.
Also known as Judith Gap · EIA plant 56377
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 135 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2005First generator online
- Operator
- Invenergy Services LLCEIA operator ID 49893
- Grid
- NWMTBalancing authority NWMT
- Price nodes
- None linkedNo verified ISO node
- Location
- Wheatland County, MT46.5725, −109.7531
- EIA plant ID
- 56377EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Judith Gap produces
Free · EIA-923Net generation, 2025
412 GWh
412,281 MWh, final
Capacity factor, 2025
34.9%
2024: 35.0%
January to July 2026
244 GWh
Provisional
Range, 2015 to 2025
409.0–517.4
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 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | 412,442 | Not reported | 12 of 12 |
| 2007 | 471,279 | Not reported | 12 of 12 |
| 2008 | 500,830 | Not reported | 12 of 12 |
| 2009 | 437,875 | Not reported | 12 of 12 |
| 2010 | 414,002 | 35.0% | 12 of 12 |
| 2011 | 511,361 | 43.2% | 12 of 12 |
| 2012 | 461,372 | 38.9% | 12 of 12 |
| 2013 | 507,969 | 43.0% | 12 of 12 |
| 2014 | 489,637 | 41.4% | 12 of 12 |
| 2015 | 455,350 | 38.5% | 12 of 12 |
| 2016 | 481,097 | 40.6% | 12 of 12 |
| 2017 | 450,729 | 38.1% | 12 of 12 |
| 2018 | 429,673 | 36.3% | 12 of 12 |
| 2019 | 441,562 | 37.3% | 12 of 12 |
| 2020 | 517,396 | 43.6% | 12 of 12 |
| 2021 | 460,098 | 38.9% | 12 of 12 |
| 2022 | 503,318 | 42.6% | 12 of 12 |
| 2023 | 409,029 | 34.6% | 12 of 12 |
| 2024 | 415,024 | 35.0% | 12 of 12 |
| 2025 | 412,281 | 34.9% | 12 of 12 |
| 2026 (provisional, partial year) | 244,102 | 35.5% | 7 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 |
|---|---|---|---|
| 1 | Onshore Wind Turbine | 135.0 | December 2005 |
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 Invenergy Services 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.
300 analyst questions a month, plus MCP
Query Judith Gap Wind Energy Center and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Judith Gap
More plants operated by Invenergy Services LLC
Questions about Judith Gap
How much power does Judith Gap Wind Energy Center produce?
Judith Gap Wind Energy Center reported 412,281 MWh (412 GWh) of net generation in 2025, a 34.9% capacity factor on 135 MW of nameplate capacity. From January to July 2026 it reported 244 GWh, which is provisional.
Where is Judith Gap Wind Energy Center?
Judith Gap Wind Energy Center is in Wheatland County, Montana, at 46.5725, −109.7531. It is in the NorthWestern Energy (NWMT) balancing area (NWMT).
Who operates Judith Gap Wind Energy Center?
EIA-860M for August 2026 lists Invenergy Services LLC as the operator (EIA operator ID 49893). The operator is not always the owner.
When did Judith Gap Wind Energy Center start operating?
Its first generator began operating in December 2005, 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