Directory of Power Plants in South Dakota
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Aberdeen CT | NorthWestern Energy - (SD) | Aberdeen, SD | Southwest Power Pool (SWPP) | 56.2 GWh | Apr 1978 | Dec 2025 | Natural Gas |
| Angus Anson | Northern States Power Co - Minnesota | Sioux Falls, SD | Midcontinent Independent System Operator, Inc. (MISO) | 238.5 GWh | Jul 1994 | Dec 2025 | Natural Gas : 99.9% |
| Astoria Station | Otter Tail Power Co | Astoria, SD | Midcontinent Independent System Operator, Inc. (MISO) | 530.4 GWh | Mar 2021 | May 2026 | Natural Gas |
| Aurora County Wind | RWE Clean Energy | White Lake, SD | Southwest Power Pool (SWPP) | 79.8 GWh | Sep 2018 | Dec 2025 | Wind |
| Beethoven Wind | NorthWestern Energy - (SD) | Tripp, SD | Southwest Power Pool (SWPP) | 282.3 GWh | Apr 2015 | Dec 2025 | Wind |
| Ben French | Black Hills Power, Inc. | Rapid City, SD | Western Area Power Administration - Rocky Mountain Region (WACM) | 17.4 GWh | Mar 1960 | May 2026 | Natural Gas : 99.6% |
| Big Bend Dam | USACE-Omaha | Chamberlain, SD | Southwest Power Pool (SWPP) | 745.8 GWh | Aug 1964 | Dec 2025 | Water |
| Big Stone | Otter Tail Power Co | Big Stone City, SD | Midcontinent Independent System Operator, Inc. (MISO) | 1.8 TWh | Apr 1975 | May 2026 | Subbituminous Coal : 99.8% |
| Bob Glanzer Generating Station | NorthWestern Energy - (SD) | Huron, SD | Southwest Power Pool (SWPP) | 104.1 GWh | Mar 2022 | Dec 2024 | Natural Gas |
| Brule County Wind | RWE Clean Energy | Kimball, SD | Southwest Power Pool (SWPP) | 79.5 GWh | Sep 2018 | Dec 2025 | Wind |
| Buffalo Ridge I LLC | Avangrid Power LLC | Elkton, SD | Midcontinent Independent System Operator, Inc. (MISO) | 94.6 GWh | Mar 2009 | May 2026 | Wind |
| Buffalo Ridge II LLC | Avangrid Power LLC | Elkton, SD | Midcontinent Independent System Operator, Inc. (MISO) | 493.7 GWh | Nov 2010 | May 2026 | Wind |
| Campbell County Wind Farm | RWE Clean Energy | Pollock, SD | Southwest Power Pool (SWPP) | 342.9 GWh | Nov 2015 | Dec 2025 | Wind |
| Coyote Ridge | Coyote Ridge LLC | White, SD | Western Area Power Administration - Rocky Mountain Region (WACM) | 380.0 GWh | Nov 2019 | May 2026 | Wind |
| Crocker Wind Farm | Crocker Wind Farm, LLC | Conde, SD | Midcontinent Independent System Operator, Inc. (MISO) | 774.8 GWh | Oct 2019 | May 2026 | Wind |
| Crowned Ridge Wind Energy Center | Crowned Ridge Wind, LLC | Watertown, SD | Midcontinent Independent System Operator, Inc. (MISO) | 787.5 GWh | Nov 2019 | May 2026 | Wind |
| Crowned Ridge Wind II Energy Center | Northern States Power Co - Minnesota | Watertown, SD | Midcontinent Independent System Operator, Inc. (MISO) | 847.4 GWh | Nov 2020 | May 2026 | Wind |
| Dakota Range III Wind Project | Engie North America | Summit, SD | Southwest Power Pool (SWPP) | 594.1 GWh | Apr 2021 | May 2026 | Wind |
| Dakota Range Wind | Northern States Power Co - Minnesota | Marvin, SD | Midcontinent Independent System Operator, Inc. (MISO) | 983.7 GWh | Dec 2021 | May 2026 | Wind |
| Day County Wind LLC | Day County Wind LLC | Conde, SD | Southwest Power Pool (SWPP) | 430.4 GWh | Mar 2010 | May 2026 | Wind |
| Deer Creek Station | Basin Electric Power Coop | White, SD | Southwest Power Pool (SWPP) | 1.2 TWh | Jul 2012 | Dec 2025 | Natural Gas |
| Deuel Harvest Wind Energy LLC | Southern Power Co | Clear Lake, SD | Midcontinent Independent System Operator, Inc. (MISO) | 1.0 TWh | Jan 2021 | May 2026 | Wind |
| Fall River Solar, LLC | Greenbacker Renewable Energy Corporation | Edgemont, SD | Southwest Power Pool (SWPP) | 170.8 GWh | Aug 2023 | May 2026 | Solar |
| Fort Randall | USACE-Omaha | Pickstown, SD | Southwest Power Pool (SWPP) | 1.4 TWh | Feb 1954 | Dec 2025 | Water |
| Ft. Pierre | City of Fort Pierre - (SD) | Fort Pierre, SD | Southwest Power Pool (SWPP) | 67.6 MWh | Sep 2004 | Dec 2025 | Distillate Fuel Oil |
| Groton Generation Station | Basin Electric Power Coop | Groton, SD | Southwest Power Pool (SWPP) | 220.7 GWh | Jun 2006 | Dec 2025 | Natural Gas |
| Lake Preston | Otter Tail Power Co | Lake Preston, SD | Midcontinent Independent System Operator, Inc. (MISO) | 135.0 MWh | May 1978 | Dec 2025 | Distillate Fuel Oil |
| Lange Generating Station | Black Hills Power, Inc. | Rapid City, SD | Western Area Power Administration - Rocky Mountain Region (WACM) | 144.5 GWh | Feb 2002 | Dec 2025 | Natural Gas |
| North Bend Wind Project, LLC | North Bend Wind Project, LLC | Highmore, SD | Southwest Power Pool (SWPP) | 853.6 GWh | Nov 2023 | May 2026 | Wind |
| Oahe | USACE-Omaha | Pierre, SD | Southwest Power Pool (SWPP) | 2.0 TWh | Mar 1962 | Dec 2025 | Water |
| Oak Tree Energy | RWE Clean Energy | Clark, SD | Southwest Power Pool (SWPP) | 65.8 GWh | Nov 2014 | Dec 2025 | Wind |
| Pierre Solar | Western Minnesota Mun Pwr Agny | Pierre, SD | Midcontinent Independent System Operator, Inc. (MISO) | 1.9 GWh | Aug 2016 | Dec 2025 | Solar |
| POET Bioprocessing- Mitchell | POET Bioprocessing- Mitchell | Mitchell, SD | Southwest Power Pool (SWPP) | 20.3 GWh | Sep 2021 | Dec 2025 | Natural Gas |
| POET Biorefining - Chancellor | POET Biorefining- Chancellor | Chancellor, SD | Midcontinent Independent System Operator, Inc. (MISO) | 27.6 GWh | Jul 2018 | Dec 2025 | Wood/Wood Waste Solids : 70.4% Natural Gas : 25.9% Landfill Gas : 3.8% |
| POET Biorefining - Hudson | POET Biorefining - Hudson | Hudson, SD | Midcontinent Independent System Operator, Inc. (MISO) | 10.9 GWh | Apr 2019 | Dec 2025 | Natural Gas |
| Prairie Winds SD1 | Basin Electric Power Coop | Crow Lake, SD | Southwest Power Pool (SWPP) | 358.1 GWh | Jan 2011 | Dec 2025 | Wind |
| Prevailing Wind Park | AES Distributed Energy | Lesterville, SD | Southwest Power Pool (SWPP) | 818.7 GWh | Feb 2020 | May 2026 | Wind |
| RE Solar, LLC | Redfield Energy, LLC | Redfield, SD | Southwest Power Pool (SWPP) | 11.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Rolling Thunder Wind Farm Hybrid | Clearlight Energy Holdings LP | Miller, SD | Southwest Power Pool (SWPP) | 84.2 GWh | Oct 2009 | Dec 2025 | Wind |
| South Dakota Wind Energy Cente | FPL Energy South Dakota Wind LLC | Highmore, SD | Western Area Power Administration - Rocky Mountain Region (WACM) | 83.3 GWh | Sep 2003 | May 2026 | Wind |
| Spearfish Hydro | City of Spearfish - (SD) | Spearfish, SD | Western Area Power Administration - Rocky Mountain Region (WACM) | 18.4 GWh | Sep 1912 | Dec 2025 | Water |
| Spirit Mound | Basin Electric Power Coop | Vermillion, SD | Southwest Power Pool (SWPP) | 3.5 GWh | May 1978 | Jan 2026 | Distillate Fuel Oil |
| Sweetland Wind Farm, LLC | Sweetland Wind Farm, LLC | St. Lawrence, SD | Southwest Power Pool (SWPP) | 830.5 GWh | Sep 2023 | May 2026 | Wind |
| Tatanka Ridge | Tatanka Ridge LLC | Toronto, SD | Midcontinent Independent System Operator, Inc. (MISO) | 533.3 GWh | Dec 2020 | May 2026 | Wind |
| Triple H Wind Project | Engie North America | Highmore, SD | Southwest Power Pool (SWPP) | 1.0 TWh | Oct 2020 | May 2026 | Wind |
| Valley Queen Cheese | Valley Queen Cheese Factory, Inc. | Milbank, SD | Midcontinent Independent System Operator, Inc. (MISO) | 20.0 MWh | Mar 2002 | Apr 2026 | Distillate Fuel Oil |
| Watertown Power Plant | Missouri Basin Muni Power Agny | Watertown, SD | Southwest Power Pool (SWPP) | 1.7 GWh | Dec 1977 | Dec 2025 | Distillate Fuel Oil |
| Wessington Springs | Wessington Wind | Wessington Springs, SD | Southwest Power Pool (SWPP) | 223.7 GWh | Jan 2009 | May 2026 | Wind |
| Wild Springs | Geronimo Power | New Underwood, SD | Western Area Power Administration - Rocky Mountain Region (WACM) | 269.1 GWh | May 2024 | May 2026 | Solar |
| Willow Creek Wind Power LLC | Willow Creek Wind Power LLC | Newell, SD | Southwest Power Pool (SWPP) | 381.0 GWh | Aug 2020 | May 2026 | Wind |
Browse Power Plants By South Dakota Counties
Figures are based on December 2025 generation numbers.| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Aurora County, SD | # 22 | 1 | 79.8 GWh |
| Beadle County, SD | # 21 | 3 | 104.1 GWh |
| Bon Homme County, SD | # 17 | 1 | 282.3 GWh |
| Brookings County, SD | # 2 | 5 | 2.1 TWh |
| Brown County, SD | # 18 | 2 | 276.9 GWh |
| Brule County, SD | # 23 | 2 | 79.5 GWh |
| Buffalo County, SD | # 11 | 1 | 745.8 GWh |
| Butte County, SD | # 15 | 1 | 381.0 GWh |
| Campbell County, SD | # 16 | 1 | 342.9 GWh |
| Charles Mix County, SD | # 7 | 1 | 1.4 TWh |
| Clark County, SD | # 9 | 3 | 840.4 GWh |
| Clay County, SD | # 29 | 1 | 3.5 GWh |
| Codington County, SD | # 6 | 3 | 1.6 TWh |
| Davison County, SD | # 25 | 1 | 20.3 GWh |
| Day County, SD | # 14 | 2 | 430.4 GWh |
| Deuel County, SD | # 3 | 4 | 2.1 TWh |
| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Fall River County, SD | # 20 | 1 | 170.8 GWh |
| Grant County, SD | # 1 | 5 | 3.4 TWh |
| Hand County, SD | # 8 | 2 | 914.7 GWh |
| Hughes County, SD | # 4 | 2 | 2.0 TWh |
| Hyde County, SD | # 5 | 5 | 1.9 TWh |
| Jerauld County, SD | # 12 | 2 | 581.8 GWh |
| Kingsbury County, SD | # 30 | 1 | 135.0 MWh |
| Lawrence County, SD | # 26 | 1 | 18.4 GWh |
| Lincoln County, SD | # 28 | 1 | 10.9 GWh |
| Minnehaha County, SD | # 19 | 2 | 238.5 GWh |
| Pennington County, SD | # 13 | 3 | 431.0 GWh |
| Spink County, SD | # 27 | 2 | 11.9 GWh |
| Stanley County, SD | # 31 | 1 | 67.6 MWh |
| Turner County, SD | # 24 | 1 | 27.6 GWh |
| Yankton County, SD | # 10 | 2 | 818.7 GWh |