Wygen III
20 Wyodak Road, Gillette, WY 82718Plant Summary Information
Wygen III is ranked #46 out of 69 power plants in Wyoming in terms of total annual net electricity generation.
Wygen III is comprised of 1 generator and generated -2.4 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Wygen III |
|---|---|
| Utility Name | Black Hills Power, Inc. |
| Location | Campbell County, WY |
| Initial Operation Date | April 2010 |
| Last Update | Dec 2025 |
| Annual Generation | 95.0 GWh |
| Annual Consumption | 2.0 M MMBtu |
| Ranked #3,555 out of 13,081 Power Plants Nationwide | |
| Ranked #105 out of 122 Subbituminous Coal Power Plants Nationwide | |
| Ranked #46 out of 69 Wyoming Power Plants | |
| Ranked #11 out of 11 Wyoming Subbituminous Coal Power Plants | |
| Fuel Types | Subbituminous Coal : 99.8% |
| Previous Operators |
Black Hills Power Inc (2013 to 2014) Black Hills Power, Inc. d/b/a (2015 to 2020) Black Hills Power, Inc. (2021 to 2025) |
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Monthly Net Generation for Wygen III
Monthly Plant Fuel Consumption for Wygen III
Wygen III Details
| Summary Information | |
|---|---|
| Plant Name | Wygen III (56596) |
| Plant Address | 20 Wyodak Road, Gillette, WY 82718 |
| Utility | Black Hills Power, Inc. (19545) |
| Latitude, Longitude | 44.2919, -105.3806 |
| Generation Dates on File | Apr 2010 to Dec 2025 |
| Initial Operation Date | April 2010 |
| Annual Generation | 95.0 GWh |
| Fuel Types | Subbituminous Coal : 99.8% |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | Western Area Power Administration - Rocky Mountain Region (WACM) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Wells |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Black Hills Power Inc (19545) WY |
| Grid Voltage | 230.00 kV |
| Energy Storage | No |
| Natural Gas Information | |
| Pipeline Name | Other - Please explain in pipeline notes below. |
| Pipeline Notes | Wygen 3 natural gas startup fuel supplied by pipeline owned by Black Hills and is operated by Black Hills Service Co. |
| Natural Gas Storage | No |
Generator 5 Details Operating April 2010
| Technology | Conventional Steam Coal |
|---|---|
| Prime Mover | Steam Turbine |
| Ownership | Jointly Owned |
| Nameplate Capacity | 116 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 100 MW |
| Winter Capacity | 103 MW |
| Minimum Load | 71.5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | April 2010 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
|---|---|
| Energy Source | Subbituminous Coal |
| Startup Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | OVER |
| Pulverized Coal Technology | Yes |
| Subcritical Technology | Yes |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Wygen III Plant Owners
| Owner Name | Address | Ownership |
|---|---|---|
| Montana-Dakota Utilities Co | 400 North Fourth Street, Bismarck, ND 58501 | 25.00% |
| Black Hills Power, Inc. | 7001 Mt. Rushmore Road, Rapid City, SD 57702 | 52.00% |
| City Of Gillette | 611 North Exchange Avenue, Gillette, WY 82717 | 23.00% |
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Subbituminous Coal.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #95 | Lon Wright | Fremont, NE | 515.7 GWh |
| #96 | River Valley | Panama, OK | 486.6 GWh |
| #97 | Platte | Grand Island, NE | 395.7 GWh |
| #98 | Hardin Generator Project | Hardin, MT | 366.5 GWh |
| #99 | Archer Daniels Midland Decatur | Decatur, IL | 910.8 GWh |
| #100 | Archer Daniels Midland Columbus | Columbus, NE | 232.5 GWh |
| #101 | Apache Station | Cochise, AZ | 2.0 TWh |
| #102 | WE Soda Alkalai LLC | Green River, WY | 259.5 GWh |
| #103 | Clifty Creek | Madison, IN | 6.0 TWh |
| #104 | Chena Power Plant | Fairbanks, AK | 121.3 GWh |
| #106 | American Crystal Sugar Hillsboro | Hillsboro, ND | 85.2 GWh |
| #107 | Eielson AFB Central Heat & Power Plant | Eielson AFB, AK | 77.1 GWh |
| #108 | FWA Central Heat and Power Plant | Fort Wainwright, AK | 66.7 GWh |
| #109 | Kyger Creek | Cheshire, OH | 5.0 TWh |
| #110 | Prairie Creek | Cedar Rapids, IA | 82.8 GWh |
| #111 | University of Alaska Fairbanks | Fairbanks, AK | 53.3 GWh |
| #112 | Georgia-Pacific Muskogee | Muskogee, OK | 351.8 GWh |
| #113 | American Crystal Sugar Drayton | Drayton, ND | 42.8 GWh |
| #114 | American Crystal Sugar East Grand Forks | East Grand Forks, MN | 42.6 GWh |
| #115 | American Crystal Sugar Crookston | Crookston, MN | 41.1 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Wygen III.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Anticline Wind | Casper, WY | 411.3 GWh | 92.7 mi |
| Arvada | Arvada, WY | 171.0 MWh | 45.2 mi |
| Barber Creek | Gillette, WY | 294.0 MWh | 43.9 mi |
| Campbell Hill Windpower | Glenrock, WY | 261.4 GWh | 93.5 mi |
| Cedar Springs I | Douglas, WY | 733.0 GWh | 88 mi |
| Cedar Springs II | Douglas, WY | 736.0 GWh | 91.4 mi |
| Cedar Springs III | Douglas, WY | 484.7 GWh | 84.6 mi |
| Cedar Springs Wind IV | Douglas, WY | 1.3 TWh | 83.9 mi |
| Dave Johnston | Glen Rock, WY | 3.2 TWh | 102.4 mi |
| Dry Fork Station | Gillette, WY | 2.6 TWh | 7.8 mi |
| Glenrock | Glenrock, WY | 469.2 GWh | 90.9 mi |
| Hartzog | Wright, WY | 148.0 MWh | 32.8 mi |
| Neil Simpson Gas Turbine #2 | Gillette, WY | 36.5 GWh | 0.5 mi |
| Neil Simpson II | Gillette, WY | 641.8 GWh | 0.5 mi |
| Rolling Hills | Glenrock, WY | 295.1 GWh | 88.5 mi |
| Spearfish Hydro | Spearfish, SD | 18.4 GWh | 76.4 mi |
| Top of the World Windpower Project | Glenrock, WY | 517.3 GWh | 96.6 mi |
| Wygen 1 | Gillette, WY | 578.0 GWh | 0.4 mi |
| Wygen 2 | Gillette, WY | 595.6 GWh | 0 mi |
| Wyodak | Gillette, WY | 2.0 TWh | 0.1 mi |