Largest power plants in South Dakota
The 48 largest power plants in South Dakota by nameplate capacity, from EIA-860M for August 2026, with 2025 net generation from EIA-923.
All 48 by nameplate capacity
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | OaheHughes County · Hydro | 786 | 2,014 | 29.2% |
| 2 | Big Bend DamBuffalo County · Hydro | 538 | 746 | 15.8% |
| 3 | Big StoneGrant County · Coal | 450 | 2,030 | 51.4% |
| 4 | Angus AnsonMinnehaha County · Natural gas | 406 | 239 | 6.7% |
| 5 | Astoria StationDeuel County · Natural gas | 349 | 455 | 14.9% |
| 6 | Deer Creek StationBrookings County · Natural gas | 324 | 1,168 | 41.1% |
| 7 | Dakota Range WindGrant County · Wind | 304 | 1,017 | 38.2% |
| 8 | Deuel Harvest Wind Energy LLCDeuel County · Wind | 300 | 1,102 | 41.9% |
| 9 | Fort RandallCharles Mix County · Hydro | 280 | 1,417 | 50.5% |
| 10 | Triple H Wind ProjectHyde County · Wind | 250 | 1,031 | 47.0% |
| 11 | Prevailing Wind ParkYankton County · Wind | 220 | 851 | 44.1% |
| 12 | Groton Generation StationBrown County · Natural gas | 216 | 221 | 11.6% |
| 13 | Buffalo Ridge II LLCBrookings County · Wind | 210 | 479 | 26.1% |
| 14 | Crowned Ridge Wind II Energy CenterCodington County · Wind | 201 | 870 | 49.5% |
| 15 | Crowned Ridge Wind Energy CenterCodington County · Wind | 200 | 812 | 46.3% |
| 16 | Crocker Wind FarmClark County · Wind | 200 | 787 | 44.9% |
| 17 | Sweetland Wind Farm, LLCHand County · Wind | 200 | 765 | 43.7% |
| 18 | North Bend Wind Project, LLCHyde County · Wind | 200 | 883 | 50.4% |
| 19 | Prairie Winds SD1Jerauld County · Wind | 162 | 358 | 25.2% |
| 20 | Tatanka RidgeDeuel County · Wind | 154 | 594 | 44.0% |
| 21 | Dakota Range III Wind ProjectGrant County · Wind | 154 | 619 | 46.0% |
| 22 | Spirit MoundClay County · Oil | 135 | 2.4 | 0.2% |
| 23 | Wild SpringsPennington County · Solar | 128 | 264 | 23.5% |
| 24 | Aberdeen CTBrown County · Natural gas and oil | 111 | 56.2 | 5.8% |
| 25 | Ben FrenchPennington County · Natural gas | 110 | 20.0 | 2.1% |
| 26 | Willow Creek Wind Power LLCButte County · Wind | 105 | 374 | 40.7% |
| 27 | Day County Wind LLCDay County · Wind | 99 | 439 | 50.6% |
| 28 | Coyote RidgeBrookings County · Wind | 97 | 393 | 46.1% |
| 29 | Campbell County Wind FarmCampbell County · Wind | 94 | 343 | 41.5% |
| 30 | Beethoven WindBon Homme County · Wind | 80 | 282 | 40.3% |
| 31 | Fall River Solar, LLCFall River County · Solar | 80 | 171 | 24.4% |
| 32 | Bob Glanzer Generating StationBeadle County · Natural gas | 69 | 99.1 | 16.4% |
| 33 | Watertown Power PlantCodington County · Oil | 68 | 1.7 | 0.3% |
| 34 | Wessington SpringsJerauld County · Wind | 51 | 231 | 51.7% |
| 35 | Buffalo Ridge I LLCBrookings County · Wind | 50 | 106 | 24.1% |
| 36 | South Dakota Wind Energy CenteHyde County · Wind | 41 | 81.4 | 22.9% |
| 37 | Lange Generating StationPennington County · Natural gas | 40 | 144 | 41.2% |
| 38 | Rolling Thunder Wind Farm HybridHand County · Wind | 26 | 84.2 | 38.5% |
| 39 | Aurora County WindAurora County · Wind | 20 | 79.8 | 45.6% |
| 40 | Brule County WindBrule County · Wind | 20 | 79.5 | 45.4% |
| 41 | Oak Tree EnergyClark County · Wind | 20 | 65.8 | 38.5% |
| 42 | RE Solar, LLCSpink County · Solar | 8.3 | 11.9 | 16.4% |
| 43 | Ft. PierreStanley County · Oil | 6.0 | 0.1 | 0.1% |
| 44 | POET Biorefining - ChancellorTurner County · Wood biomass | 5.4 | 27.6 | 58.3% |
| 45 | Spearfish HydroLawrence County · Hydro | 4.0 | 18.4 | 52.5% |
| 46 | POET Bioprocessing- MitchellDavison County · Natural gas | 3.9 | 20.3 | 59.5% |
| 47 | POET Biorefining - HudsonLincoln County · Natural gas | 3.6 | 10.9 | 34.5% |
| 48 | Pierre SolarHughes County · Solar | 1.0 | 1.9 | 22.2% |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources