State
South Dakota
Who serves its customers, 2025
| Kind of utility | Customers | Share of customers |
|---|---|---|
| Investor owned | 282,085 | 53.1% |
| Cooperative | 110,361 | 20.8% |
| Public (municipal, state, federal, and districts) | 40,411 | 7.6% |
| Other | 98,017 | 18.5% |
Customers of full-service and energy-only providers, as EIA counts them; delivery-only customers are the same people, so they are not counted twice.
U.S. Energy Information Administration · Annual Electric Power Industry Report (Form EIA-861) · data for 2025 · as of Oct 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Oct 7, 2027. Last checked for an update: Oct 31, 2026.
Average price by sector, 2025
| Sector | Average price (cents per kWh) |
|---|---|
| Residential | 13.32 |
| Commercial | 10.61 |
| Industrial | 8.65 |
Revenue from every kind of service over sales counted once, as EIA computes its state averages.
Capacity and generation by fuel
| Fuel | Capacity | Net generation in 2025 |
|---|---|---|
| Wind | 3,456.6 MW | 12,727,932 MWh |
| Hydro | 1,648.4 MW | 4,194,374 MWh |
| Natural gas | 1,602.5 MW | 2,440,585 MWh |
| Subbituminous coal | 450 MW | 2,026,133 MWh |
| Distillate fuel oil | 288.7 MW | 7,398 MWh |
| Solar | 217.3 MW | 448,846 MWh |
| Wood | 5.4 MW | 19,421 MWh |
| Batteries | 0.8 MW | 0 MWh |
| AB | 0 MWh | |
| Landfill gas | 1,038 MWh | |
| OG | 0 MWh | |
| Other | 0 MWh |
Balancing authorities serving it: MISO, SWPP, WACM.
U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 10, 2027. Last checked for an update: Oct 31, 2026.
U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Nov 1, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 11, 2027. Last checked for an update: Nov 1, 2026.
Interconnection queue, as of the end of 2025
| Type | Active capacity (MW) | Projects |
|---|---|---|
| Solar | 2,140 | 11 |
| Wind | 2,902 | 16 |
| Storage | 700 | 3 |
| Gas | 1,669 | 7 |
| Hybrid | 810 | 4 |
| Other | 1,407 | 7 |
Requests still active in an interconnection queue at the end of 2025. Most never get built. Credit: Lawrence Berkeley National Laboratory and GridTracker.
Lawrence Berkeley National Laboratory and GridTracker · Queued Up: Interconnection Queue Data File (Lawrence Berkeley National Laboratory) · data for 2025 · as of May 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by May 7, 2027. Last checked for an update: Oct 31, 2026.
Utilities
| Utility | Ownership, as EIA reports it | Customers | Sales (MWh) |
|---|---|---|---|
| Northern States Power Co - Minnesota | Investor Owned | 107,985 | 2,300,459 |
| Adjustment 2025 | 98,017 | 2,420,364 | |
| Black Hills Power, Inc. | Investor Owned | 82,900 | 1,526,786 |
| NorthWestern Energy - (SD) | Investor Owned | 65,396 | 1,656,248 |
| Sioux Valley SW Elec Coop | Cooperative | 26,164 | 820,488 |
| Southeastern Electric Coop Inc - (SD) | Cooperative | 24,428 | 839,968 |
| West River Electric Assn Inc | Cooperative | 21,332 | 348,596 |
| Watertown Municipal Utilities | Municipal | 14,497 | 394,839 |
| City of Brookings - (SD) | Municipal | 12,568 | 341,914 |
| Otter Tail Power Co | Investor Owned | 12,027 | 563,968 |
| Black Hills Electric Coop, Inc | Cooperative | 11,478 | 166,008 |
| Montana-Dakota Utilities Co | Investor Owned | 8,444 | 128,802 |
| Central Electric Coop, Inc - (SD) | Cooperative | 7,397 | 346,786 |
| City of Pierre - (SD) | Municipal | 7,393 | 162,150 |
| Northern Electric Coop, Inc | Cooperative | 6,938 | 300,486 |
| Rosebud Electric Coop Inc | Cooperative | 5,697 | 91,302 |
| MidAmerican Energy Co | Investor Owned | 5,333 | 315,612 |
| Dakota Energy Coop Inc | Cooperative | 3,645 | 241,741 |
| City of Madison - (SD) | Municipal | 3,361 | 96,054 |
| Oahe Electric Coop Inc | Cooperative | 3,282 | 333,385 |
| City of Volga - (SD) | Municipal | 1,290 | 70,904 |
| Nebraska Public Power District | Political Subdivision | 1,277 | 35,770 |
| WAPA-- Western Area Power Administration | Federal | 25 | 349,999 |
A utility with too few reported figures for its own page is listed here with what it reported.
Power plants (54)
| Plant | County | Nameplate capacity | Operator |
|---|---|---|---|
| Oahe | Hughes | 786.1 MW | USACE-Omaha |
| Big Bend Dam | Buffalo | 538.3 MW | USACE-Omaha |
| Big Stone | Grant | 451 MW | Otter Tail Power Co |
| Angus Anson | Minnehaha | 405.7 MW | Northern States Power Co - Minnesota |
| Astoria Station | Deuel | 349 MW | Otter Tail Power Co |
| Deer Creek Station | Brookings | 324 MW | Basin Electric Power Coop |
| Fort Randall | Charles Mix | 320 MW | USACE-Omaha |
| Dakota Range Wind | Grant | 304 MW | Northern States Power Co - Minnesota |
| Deuel Harvest Wind Energy LLC | Deuel | 300 MW | Southern Power Co |
| Triple H Wind Project | Hyde | 250.2 MW | Engie North America |
| Prevailing Wind Park | Yankton | 220 MW | AES Distributed Energy |
| Groton Generation Station | Brown | 216.4 MW | Basin Electric Power Coop |
| Buffalo Ridge II LLC | Brookings | 210 MW | Avangrid Power LLC |
| Crowned Ridge Wind II Energy Center | Codington | 200.6 MW | Northern States Power Co - Minnesota |
| Crowned Ridge Wind Energy Center | Codington | 200.1 MW | Crowned Ridge Wind, LLC |
| Crocker Wind Farm | Clark | 200 MW | Geronimo Power |
| North Bend Wind Project, LLC | Hyde | 200 MW | North Bend Wind Project, LLC |
| Sweetland Wind Farm, LLC | Hand | 200 MW | Sweetland Wind Farm, LLC |
| Prairie Winds SD1 | Jerauld | 162 MW | Basin Electric Power Coop |
| Tatanka Ridge | Deuel | 154 MW | Tatanka Ridge LLC |
| Dakota Range III Wind Project | Grant | 153.6 MW | Engie North America |
| Spirit Mound | Clay | 135 MW | Basin Electric Power Coop |
| Wild Springs | Pennington | 128 MW | Geronimo Power |
| Aberdeen CT | Brown | 111 MW | NorthWestern Energy - (SD) |
| Ben French | Pennington | 110 MW | Black Hills Power, Inc. |
| Willow Creek Wind Power LLC | Butte | 105 MW | Willow Creek Wind Power LLC |
| Day County Wind LLC | Day | 99 MW | Day County Wind LLC |
| Coyote Ridge | Brookings | 97.4 MW | Coyote Ridge LLC |
| Campbell County Wind Farm | Campbell | 94.3 MW | RWE Clean Energy |
| Beethoven Wind | Bon Homme | 80 MW | NorthWestern Energy - (SD) |
| Fall River Solar, LLC | Fall River | 80 MW | Greenbacker Renewable Energy Corporation |
| Bob Glanzer Generating Station | Beadle | 69 MW | NorthWestern Energy - (SD) |
| Watertown Power Plant | Codington | 67.5 MW | Missouri Basin Muni Power Agny |
| Wessington Springs | Jerauld | 51 MW | Wessington Wind |
| Buffalo Ridge I LLC | Brookings | 50.4 MW | Avangrid Power LLC |
| South Dakota Wind Energy Cente | Hyde | 40.5 MW | FPL Energy South Dakota Wind LLC |
| Lange Generating Station | Pennington | 40 MW | Black Hills Power, Inc. |
| Rolling Thunder Wind Farm Hybrid | Hand | 25.8 MW | Clearlight Energy Holdings LP |
| Lake Preston | Kingsbury | 24.1 MW | Otter Tail Power Co |
| Aurora County Wind | Aurora | 20 MW | RWE Clean Energy |
| Brule County Wind | Brule | 20 MW | RWE Clean Energy |
| Oak Tree Energy | Clark | 19.5 MW | RWE Clean Energy |
| Yankton | Yankton | 13.4 MW | NorthWestern Energy - (SD) |
| RE Solar, LLC | Spink | 8.3 MW | Redfield Energy, LLC |
| Ft. Pierre | Stanley | 6 MW | City of Fort Pierre - (SD) |
| POET Biorefining - Chancellor | Turner | 5.4 MW | POET Biorefining- Chancellor |
| Valley Queen Cheese | Grant | 4.5 MW | Valley Queen Cheese Factory, Inc. |
| Spearfish Hydro | Lawrence | 4 MW | City of Spearfish - (SD) |
| POET Bioprocessing- Mitchell | Davison | 3.9 MW | POET Bioprocessing- Mitchell |
| POET Biorefining - Hudson | Lincoln | 3.6 MW | POET Biorefining - Hudson |
| Clark (SD) | Clark | 2.7 MW | NorthWestern Energy - (SD) |
| Faulkton | Faulk | 2.7 MW | NorthWestern Energy - (SD) |
| State Auto Insurance | Grant | 1.7 MW | SLB Milbank LLC |
| Pierre Solar | Hughes | 1 MW | Western Minnesota Mun Pwr Agny |
Customer-owned generation (net metering)
| Year | Photovoltaic (MW) | Battery or storage (MW) | Wind (MW) | Other (MW) | All technologies (MW) | Installations | Energy sold back (MWh) |
|---|---|---|---|---|---|---|---|
| 2021 | 0.9 | 0.2 | 1.1 | 126 | 417 | ||
| 2022 | 1.2 | 0.2 | 1.4 | 154 | 477 | ||
| 2023 | 3.1 | 0.2 | 3.3 | 364 | 556 | ||
| 2024 | 4.6 | 0.2 | 4.8 | 536 | 920 | ||
| 2025 | 4.9 | 0.2 | 5.1 | 647 | 1,971 |
| Sector | All technologies (MW) | Installations | Energy sold back (MWh) |
|---|---|---|---|
| Residential | 3.7 | 588 | 1,655 |
| Commercial | 1.5 | 59 | 315 |
Distributed generation that is not net metered
A different arrangement: customer-sited or utility-owned generation that is paid or credited some other way, or not at all. EIA reports it separately, and it is not added to the net metering figures.
| Year | Photovoltaic | Wind | Internal Combustion | Storage | Battery | All technologies (MW) |
|---|---|---|---|---|---|---|
| 2021 | 0.1 | 0.2 | 17.0 | 17.4 | ||
| 2022 | 0.1 | 0.2 | 17.0 | 0.0 | 17.3 | |
| 2023 | 0.8 | 0.1 | 17.0 | 0.0 | 17.9 | |
| 2024 | 0.8 | 0.1 | 17.0 | 0.2 | 18.1 | |
| 2025 | 0.9 | 0.1 | 17.0 | 0.2 | 18.2 |
We do not restate net metering rules, which change. The rules are with South Dakota Public Utilities Commission · the DSIRE policy database (NC Clean Energy Technology Center)
U.S. Energy Information Administration · Net metering and other distributed generation (Form EIA-861), 2021 to 2025 · data for 2025 · as of Oct 7, 2026 · retrieved Nov 1, 2026 · CC-BY-4.0 May be out of date. The next release was due by Oct 7, 2027. Last checked for an update: Nov 1, 2026.
Community solar
The laboratory's list as of September 2026 has no community solar project serving customers in South Dakota.
These counts and capacities are our own sums of the laboratory's project list; its license keeps us from publishing a copy of the list itself. About the dataset
Data: Kannan, S., Frey, N., Jayswal, R., Chan, G., and Simmons, I., Sharing the Sun: Community Solar Project Data (September 2026), National Laboratory of the Rockies, doi:10.7799/2438583. Credit: DOE/NLR/Alliance for Energy Innovation.