Williams Ignacio Natural Gas Plant
Other fuels power plant in La Plata County, Colorado. 6.1 MW of nameplate capacity across 1 generator, operated by Harvest Midstream Co.
Also known as EIA plant 50205
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Key facts
- Capacity
- 6.1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 1984First generator online
- Operator
- Harvest Midstream CoEIA operator ID 28473
- Grid
- WACMBalancing authority WACM
- Price nodes
- None linkedNo verified ISO node
- Location
- La Plata County, CO37.1456, −107.7847
- EIA plant ID
- 50205EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Williams Ignacio Natural Gas Plant produces
Free · EIA-923Net generation, 2025
46.6 GWh
46,637 MWh, final
Capacity factor, 2025
87.3%
2024: 89.8%
January to July 2026
27.2 GWh
Provisional
Range, 2015 to 2025
39.9–48.1
GWh a year. Low 2015, high 2024
| 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 | 96,843 | Not reported | 12 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | 32,471 | Not reported | 12 of 12 |
| 2005 | 43,748 | Not reported | 12 of 12 |
| 2006 | 45,969 | Not reported | 12 of 12 |
| 2007 | 41,190 | Not reported | 12 of 12 |
| 2008 | 32,791 | Not reported | 12 of 12 |
| 2009 | 35,915 | Not reported | 12 of 12 |
| 2010 | 47,437 | 88.8% | 12 of 12 |
| 2011 | 48,386 | 90.5% | 12 of 12 |
| 2012 | 44,669 | 83.4% | 12 of 12 |
| 2013 | 38,396 | 71.9% | 12 of 12 |
| 2014 | 42,386 | 79.3% | 12 of 12 |
| 2015 | 39,877 | 74.6% | 12 of 12 |
| 2016 | 41,961 | 78.3% | 12 of 12 |
| 2017 | 38,223 | 77.9% | 11 of 12 |
| 2018 | 41,646 | 77.9% | 12 of 12 |
| 2019 | 43,454 | 81.3% | 12 of 12 |
| 2020 | 46,213 | 86.2% | 12 of 12 |
| 2021 | 47,842 | 89.5% | 12 of 12 |
| 2022 | 46,524 | 87.1% | 12 of 12 |
| 2023 | 44,973 | 84.2% | 12 of 12 |
| 2024 | 48,122 | 89.8% | 12 of 12 |
| 2025 | 46,637 | 87.3% | 12 of 12 |
| 2026 (provisional, partial year) | 27,156 | 87.5% | 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 7101 | All Other | 6.1 | December 1984 |
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 Harvest Midstream Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Williams Ignacio Natural Gas Plant
How much power does Williams Ignacio Natural Gas Plant produce?
Williams Ignacio Natural Gas Plant reported 46,637 MWh (46.6 GWh) of net generation in 2025, a 87.3% capacity factor on 6.1 MW of nameplate capacity. From January to July 2026 it reported 27.2 GWh, which is provisional.
Where is Williams Ignacio Natural Gas Plant?
Williams Ignacio Natural Gas Plant is in La Plata County, Colorado, at 37.1456, −107.7847. It is in the Western Area Power Administration - Rocky Mountain Region balancing area (WACM).
Who operates Williams Ignacio Natural Gas Plant?
EIA-860M for August 2026 lists Harvest Midstream Co as the operator (EIA operator ID 28473). The operator is not always the owner.
When did Williams Ignacio Natural Gas Plant start operating?
Its first generator began operating in December 1984, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page