Wygen III
Coal power plant in Campbell County, Wyoming. 116 MW of nameplate capacity across 1 generator, operated by Black Hills Power, Inc..
Also known as EIA plant 56596
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Key facts
- Capacity
- 116 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 2010First generator online
- Operator
- Black Hills Power, Inc.EIA operator ID 19545
- Grid
- WACMBalancing authority WACM
- Price nodes
- None linkedNo verified ISO node
- Location
- Campbell County, WY44.2919, −105.3806
- EIA plant ID
- 56596EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Wygen III produces
Free · EIA-923Net generation, 2025
95.0 GWh
95,020 MWh, final
Capacity factor, 2025
9.4%
2024: 65.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
95.0–852.0
GWh a year. Low 2025, high 2018
| 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 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | 598,363 | Not reported | 12 of 12 |
| 2011 | 821,465 | 80.7% | 12 of 12 |
| 2012 | 855,131 | 83.8% | 12 of 12 |
| 2013 | 837,893 | 82.3% | 12 of 12 |
| 2014 | 838,977 | 82.4% | 12 of 12 |
| 2015 | 773,802 | Not reported | 12 of 12 |
| 2016 | 821,699 | 80.6% | 12 of 12 |
| 2017 | 772,444 | 76.0% | 12 of 12 |
| 2018 | 852,015 | 83.8% | 12 of 12 |
| 2019 | 762,334 | 75.0% | 12 of 12 |
| 2020 | 843,013 | 82.7% | 12 of 12 |
| 2021 | 831,903 | 81.9% | 12 of 12 |
| 2022 | 805,208 | 79.2% | 12 of 12 |
| 2023 | 794,708 | 78.2% | 12 of 12 |
| 2024 | 670,650 | 65.8% | 12 of 12 |
| 2025 | 95,020 | 9.4% | 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 CAMPDCO₂, 2025
125,873
US short tons. 2024: 822,209
SO₂, 2025
43
US short tons
NOx, 2025
27
US short tons
CO₂ per MWh, calculated
1.32 t
About 2,649 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (1), matched to EIA plant 56596 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
Not reported
million gallons as reported; not used, see note
Consumption, 2024
Not reported
million gallons
Source
Not reported
Dry cooling
Watershed stress
Very low/none · 0.136
USGS SUI, HUC12 Upper Donkey Creek
0 of 12 cooling months report withdrawal. Dry cooling with no reported withdrawal; not tested. Consumption is below 5% of a large reported withdrawal, so the withdrawal is not used. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 5 | Conventional Steam Coal | 116.0 | April 2010 |
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 Black Hills Power, Inc. 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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Power plants near Wygen III
More plants operated by Black Hills Power, Inc.
Questions about Wygen III
How much power does Wygen III produce?
Wygen III reported 95,020 MWh (95.0 GWh) of net generation in 2025, a 9.4% capacity factor on 116 MW of nameplate capacity.
Where is Wygen III?
Wygen III is in Campbell County, Wyoming, at 44.2919, −105.3806. It is in the Western Area Power Administration - Rocky Mountain Region balancing area (WACM).
Who operates Wygen III?
EIA-860M for August 2026 lists Black Hills Power, Inc. as the operator (EIA operator ID 19545). The operator is not always the owner.
When did Wygen III start operating?
Its first generator began operating in April 2010, 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page