Power plants in South Dakota
48 operating power projects with 7,580 MW of nameplate capacity, from EIA-860M for August 2026.
Projects
48
Nameplate capacity
7,580 MW
Counties with a plant
30
Operators
31
Power markets: SPP prices, MISO prices
Capacity by fuel
Wind · 3,457 MW · 25Hydro · 1,608 MW · 4Natural gas · 1,594 MW · 10Coal · 450 MW · 1Other fuels · 253 MW · 4Solar · 217 MW · 4Battery storage · 1 MW
MW is nameplate from operating generators and batteries. Plant counts use each project's primary fuel, so a coal and gas plant counts once.
Largest power plants in South Dakota
Top 48 · All 48 plants| Plant | Primary fuel | MW | County | Operator |
|---|---|---|---|---|
| Oahe | Hydro | 786 | Hughes | USACE-Omaha |
| Big Bend Dam | Hydro | 538 | Buffalo | USACE-Omaha |
| Big Stone | Coal | 450 | Grant | Otter Tail Power Co |
| Angus Anson | Natural gas | 406 | Minnehaha | Northern States Power Co - Minnesota |
| Astoria Station | Natural gas | 349 | Deuel | Otter Tail Power Co |
| Deer Creek Station | Natural gas | 324 | Brookings | Basin Electric Power Coop |
| Dakota Range Wind | Wind | 304 | Grant | Northern States Power Co - Minnesota |
| Deuel Harvest Wind Energy LLC | Wind | 300 | Deuel | Southern Power Co |
| Fort Randall | Hydro | 280 | Charles Mix | USACE-Omaha |
| Triple H Wind Project | Wind | 250 | Hyde | Engie North America |
South Dakota power plants by fuel
Newest plants in South Dakota
Ordered by the month the first generator began operating.
RE Solar, LLCSolar · 8.3 MW · Spink County · December 2024Wild SpringsSolar · 128 MW · Pennington County · June 2024North Bend Wind Project, LLCWind · 200 MW · Hyde County · December 2023Sweetland Wind Farm, LLCWind · 200 MW · Hand County · October 2023Fall River Solar, LLCSolar · 80 MW · Fall River County · September 2023Bob Glanzer Generating StationNatural gas · 69 MW · Beadle County · April 2022
Counties with the most capacity
Largest operators in South Dakota
USACE-Omaha3 plants · 1,604 MW
Northern States Power Co - Minnesota3 plants · 910 MW
Basin Electric Power Coop4 plants · 837 MW
Otter Tail Power Co2 plants · 799 MW
Engie North America2 plants · 404 MW
Grouped by EIA operator name. Parent companies are not merged.
All 48 plants in South Dakota, by county
Aurora County 1 plant
- Aurora County Wind Wind · 20 MW
Beadle County 1 plant
- Bob Glanzer Generating Station Natural gas · 69 MW
Bon Homme County 1 plant
- Beethoven Wind Wind · 80 MW
Brookings County 4 plants
- Deer Creek Station Natural gas · 324 MW
- Buffalo Ridge II LLC Wind · 210 MW
- Coyote Ridge Wind · 97.4 MW
- Buffalo Ridge I LLC Wind · 50.4 MW
Brown County 2 plants
- Groton Generation Station Natural gas · 216.4 MW
- Aberdeen CT Natural gas · 111 MW
Brule County 1 plant
- Brule County Wind Wind · 20 MW
Buffalo County 1 plant
- Big Bend Dam Hydro · 538.3 MW
Butte County 1 plant
- Willow Creek Wind Power LLC Wind · 105 MW
Campbell County 1 plant
- Campbell County Wind Farm Wind · 94.3 MW
Charles Mix County 1 plant
- Fort Randall Hydro · 280 MW
Clark County 2 plants
- Crocker Wind Farm Wind · 200 MW
- Oak Tree Energy Wind · 19.5 MW
Clay County 1 plant
- Spirit Mound Oil · 135 MW
Codington County 3 plants
- Crowned Ridge Wind II Energy Center Wind · 200.6 MW
- Crowned Ridge Wind Energy Center Wind · 200.1 MW
- Watertown Power Plant Oil · 67.5 MW
Davison County 1 plant
- POET Bioprocessing- Mitchell Natural gas · 3.9 MW
Day County 1 plant
- Day County Wind LLC Wind · 99 MW
Deuel County 3 plants
- Astoria Station Natural gas · 349 MW
- Deuel Harvest Wind Energy LLC Wind · 300 MW
- Tatanka Ridge Wind · 154 MW
Fall River County 1 plant
- Fall River Solar, LLC Solar · 80 MW
Grant County 3 plants
- Big Stone Coal · 450 MW
- Dakota Range Wind Wind · 304 MW
- Dakota Range III Wind Project Wind · 153.6 MW
Hand County 2 plants
- Sweetland Wind Farm, LLC Wind · 200 MW
- Rolling Thunder Wind Farm Hybrid Wind · 25.8 MW
Hughes County 2 plants
- Oahe Hydro · 786.1 MW
- Pierre Solar Solar · 1 MW
Hyde County 3 plants
- Triple H Wind Project Wind · 250.2 MW
- North Bend Wind Project, LLC Wind · 200 MW
- South Dakota Wind Energy Cente Wind · 40.5 MW
Jerauld County 2 plants
- Prairie Winds SD1 Wind · 162 MW
- Wessington Springs Wind · 51 MW
Lawrence County 1 plant
- Spearfish Hydro Hydro · 4 MW
Lincoln County 1 plant
- POET Biorefining - Hudson Natural gas · 3.6 MW
Minnehaha County 1 plant
- Angus Anson Natural gas · 405.7 MW
Pennington County 3 plants
- Wild Springs Solar · 128 MW
- Ben French Natural gas · 110 MW
- Lange Generating Station Natural gas · 40 MW
Spink County 1 plant
- RE Solar, LLC Solar · 8.3 MW
Stanley County 1 plant
- Ft. Pierre Oil · 6 MW
Turner County 1 plant
- POET Biorefining - Chancellor Wood biomass · 5.4 MW
Yankton County 1 plant
- Prevailing Wind Park Wind · 220 MW
Questions about power plants in South Dakota
How many power plants are in South Dakota?
EIA-860M for August 2026 lists 48 operating power projects in South Dakota, with 7,580 MW of nameplate capacity including batteries.
What is the largest power plant in South Dakota?
Oahe in Hughes County, with 786.1 MW of nameplate capacity. The next largest is Big Bend Dam, with 538.3 MW.
How much of South Dakota's capacity is hydro?
1,608 MW, about 21% of nameplate capacity. 4 projects have hydro as their primary fuel.
Source: EIA-860M August 2026, published 2026-09-24. Page updated 2026-10-04. Data sources