– 0 customers out in South Dakota
Power outage history
South Dakota
3.7hours
without power for the average customer in a typical year, 2018–2025. 35th of 51.
Electricity customers 478,913 Across 66 counties
Worst well-recorded year 2022 6.7 hours without power, average customer
County by county
Where South Dakota goes dark
Hours without power for the average customer in a typical year. Hover a county; click to open it.
Fewer hours64+ h / yr
Year by year
Hours in the dark, statewide
The record
South Dakota's largest outages
Statewide events with at least 2% of customers, or 25,000, out at once, by peak.
| Began | Storm | Peak out | Share |
|---|---|---|---|
| Nov 13, 2025 | No storm report | 55,175 | 11.5% |
| May 12, 2022 | Thunderstorms | 50,827 | 10.6% |
| Jul 5, 2022 | Thunderstorms | 37,987 | 7.9% |
| Dec 18, 2025 | Windstorm | 32,932 | 6.9% |
| Apr 25, 2024 | No storm report | 27,312 | 5.7% |
| Feb 11, 2016 | No storm report | 25,931 | 5.4% |
Every county
All 66 counties
| County | Hours / yr | Major outages since 2018 | Customers |
|---|---|---|---|
| Harding | 60 | 163 | 403 |
| Perkins | 37 | 136 | 890 |
| Grant | 26 | 15 | 3,124 |
| Marshall | 16 | 41 | 2,509 |
| Ziebach | 16 | 12 | 1,374 |
| Deuel | 14 | 52 | 1,505 |
| Hamlin | 12 | 45 | 2,187 |
| Haakon | 12 | 26 | 1,375 |
| Todd | 12 | 14 | 4,448 |
| Sanborn | 12 | 56 | 1,463 |
| Custer | 11 | 29 | 4,481 |
| McCook | 11 | 26 | 3,102 |
| Clark | 9.9 | 34 | 1,587 |
| Mellette | 9.6 | 3 | 837 |
| Day | 8.5 | 28 | 4,051 |
| Moody | 7.2 | 15 | 3,517 |
| Yankton | 6.4 | 10 | 11,940 |
| Turner | 6.3 | 22 | 4,964 |
| Hanson | 6.2 | 18 | 1,960 |
| Fall River | 6.1 | 23 | 4,055 |
| Bon Homme | 5.6 | 20 | 2,917 |
| Minnehaha | 5.6 | 9 | 91,940 |
| Lyman | 5.5 | 13 | 2,969 |
| Roberts | 5.1 | 26 | 4,096 |
| Jackson | 5.1 | 13 | 915 |
| Lake | 5.0 | 2 | 8,064 |
| Brule | 4.9 | 22 | 2,837 |
| Beadle | 4.8 | 14 | 9,787 |
| Kingsbury | 4.8 | 9 | 2,587 |
| Lawrence | 3.9 | 11 | 15,540 |
| Dewey | 3.8 | 4 | 4,866 |
| Aurora | 3.5 | 21 | 1,368 |
| Meade | 3.4 | 11 | 14,286 |
| Pennington | 3.4 | 2 | 68,130 |
| Spink | 3.3 | 20 | 3,353 |
| Charles Mix | 3.1 | 18 | 4,915 |
| Butte | 3.0 | 12 | 4,717 |
| Corson | 2.5 | 5 | 1,975 |
| Stanley | 2.5 | 7 | 2,520 |
| Hutchinson | 2.5 | 10 | 5,650 |
| Davison | 2.5 | 11 | 11,593 |
| Brown | 2.3 | 11 | 19,238 |
| Lincoln | 2.2 | 6 | 31,561 |
| Brookings | 2.1 | 3 | 19,030 |
| Union | 1.8 | 9 | 7,043 |
| Jerauld | 1.2 | 4 | 1,049 |
| Gregory | 1.2 | 6 | 2,673 |
| Tripp | 1.1 | 1 | 4,744 |
| Douglas | 1.0 | 16 | 1,745 |
| Oglala Lakota | 1.0 | 11 | 4,164 |
| Bennett | – | 0 | 1,450 |
| Buffalo | – | 7 | 592 |
| Campbell | – | 19 | 576 |
| Clay | – | 0 | 8,444 |
| Codington | – | 0 | 24,302 |
| Edmunds | – | 27 | 2,191 |
| Faulk | – | 19 | 1,168 |
| Hand | – | 5 | 1,991 |
| Hughes | – | 0 | 14,362 |
| Hyde | – | 24 | 615 |
| Jones | – | 26 | 697 |
| McPherson | – | 30 | 1,223 |
| Miner | – | 33 | 1,069 |
| Potter | – | 15 | 1,138 |
| Sully | – | 0 | 681 |
| Walworth | – | 24 | 2,370 |
Who keeps the lights on
Utilities in South Dakota
Reliability and residential price as reported to the EIA for the latest year. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | ¢/kWh | Customers |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | Investor Owned | 160 | 58 | 13.1 | 94k |
| Black Hills Power, Inc. | Investor Owned | 541 | 43 | 15.1 | 68k |
| NorthWestern Energy | Investor Owned | 120 | 82 | 13.3 | 52k |
| Sioux Valley SW Elec Coop | Cooperative | 59 | 59 | 13.9 | 23k |
| Southeastern Electric Coop Inc | Cooperative | 24 | 24 | 13.0 | 21k |
| West River Electric Assn Inc | Cooperative | 24 | 24 | 15.2 | 19k |
| Watertown Municipal Utilities | Municipal | 4 | 4 | 9.3 | 12k |
| City of Brookings | Municipal | 13 | 13 | 10.7 | 11k |
| Black Hills Electric Coop, Inc | Cooperative | 2,487 | 120 | 14.8 | 9.4k |
| Otter Tail Power Co | Investor Owned | 191 | 189 | 11.4 | 9.1k |
| Central Electric Coop, Inc | Cooperative | – | – | 14.7 | 6.5k |
| Montana-Dakota Utilities Co | Investor Owned | 212 | 206 | 13.0 | 6.3k |
| City of Pierre | Municipal | – | – | 10.9 | 6.2k |
| Northern Electric Coop, Inc | Cooperative | 73 | 65 | 11.4 | 5.8k |
| Rosebud Electric Coop Inc | Cooperative | 141 | 78 | 11.9 | 4.9k |
| MidAmerican Energy Co | Investor Owned | 399 | 65 | 8.9 | 4.2k |
| Dakota Energy Coop Inc | Cooperative | – | – | 16.3 | 3.2k |
| City of Madison | Municipal | – | – | 12.4 | 2.8k |
| Oahe Electric Coop Inc | Cooperative | – | – | 10.5 | 2.3k |
| City of Volga | Municipal | – | – | 12.8 | 1.1k |
| Nebraska Public Power District | Political Subdivision | – | – | 10.1 | 1.0k |