Electricity prices in South Dakota
Homes in South Dakota paid an average of 15.15 cents per kilowatt-hour for electricity in August 2026, compared with 13.90 cents a year earlier. Over the 12 months to August 2026 the average was 14.28 cents, the 36th highest of the 50 states and DC. The US average over the same period was 18.04 cents.
Monthly price since 2017
South DakotaUS average
Average residential revenue per kilowatt-hour sold, in cents, each month. Prices usually rise in summer in many states because of tiered and seasonal rates.
Year by year
| Year | Price (cents/kWh) | Average monthly bill | Average monthly use (kWh) | Residential customers |
|---|---|---|---|---|
| 2025 | 13.32 | $131 | 984 | 446,015 |
| 2024 | 12.86 | $128 | 994 | 433,543 |
| 2023 | 12.32 | $126 | 1,025 | 426,545 |
| 2022 | 12.09 | $128 | 1,058 | 419,356 |
| 2021 | 12.22 | $125 | 1,019 | 412,655 |
| 2020 | 11.75 | $122 | 1,037 | 407,526 |
| 2019 | 11.55 | $121 | 1,044 | 403,715 |
| 2018 | 11.59 | $121 | 1,045 | 400,147 |
| 2017 | 11.77 | $115 | 978 | 396,561 |
| 2016 | 11.47 | $113 | 981 | 392,184 |
| 2015 | 11.08 | $109 | 981 | 388,374 |
| 2014 | 10.47 | $109 | 1,046 | 384,745 |
| 2013 | 10.26 | $108 | 1,055 | 381,075 |
| 2012 | 10.07 | $99 | 980 | 378,628 |
| 2011 | 9.35 | $97 | 1,035 | 374,259 |
| 2010 | 8.97 | $93 | 1,041 | 370,565 |
Full calendar years with final EIA data. Bills and use are averages per residential customer account.
Last 24 months
| Month | Price (cents/kWh) | Average bill | Average use (kWh) |
|---|---|---|---|
| August 2026 (preliminary) | 15.15 | $160 | 1,057 |
| July 2026 (preliminary) | 15.37 | $176 | 1,146 |
| June 2026 (preliminary) | 15.36 | $133 | 868 |
| May 2026 (preliminary) | 15.73 | $127 | 805 |
| April 2026 (preliminary) | 14.52 | $129 | 885 |
| March 2026 (preliminary) | 14.28 | $144 | 1,006 |
| February 2026 (preliminary) | 13.22 | $147 | 1,113 |
| January 2026 (preliminary) | 13.58 | $172 | 1,269 |
| December 2025 | 12.43 | $143 | 1,150 |
| November 2025 | 13.74 | $118 | 860 |
| October 2025 | 14.01 | $112 | 798 |
| September 2025 | 14.68 | $123 | 836 |
| August 2025 | 13.90 | $140 | 1,010 |
| July 2025 | 14.45 | $154 | 1,063 |
| June 2025 | 14.29 | $121 | 844 |
| May 2025 | 14.26 | $109 | 763 |
| April 2025 | 13.31 | $112 | 842 |
| March 2025 | 12.69 | $134 | 1,058 |
| February 2025 | 11.78 | $149 | 1,266 |
| January 2025 | 12.03 | $159 | 1,325 |
| December 2024 | 12.27 | $146 | 1,190 |
| November 2024 | 13.27 | $116 | 877 |
| October 2024 | 13.66 | $109 | 800 |
| September 2024 | 13.84 | $124 | 898 |
Utilities in South Dakota, 2025
Full-service (bundled) residential customers by utility for 2025, from the annual EIA-861 survey. Select a heading to sort.
| Northern States Power Co - Minnesota | investor-owned utility | 94,137 | 13.13 | $101 |
| Black Hills Power, Inc. | investor-owned utility | 67,608 | 15.12 | $106 |
| NorthWestern Energy | investor-owned utility | 51,787 | 13.35 | $125 |
| Sioux Valley SW Elec Coop | electric cooperative | 22,989 | 13.94 | $176 |
| Southeastern Electric Coop Inc | electric cooperative | 20,959 | 12.98 | $151 |
| West River Electric Assn Inc | electric cooperative | 18,975 | 15.16 | $136 |
| Watertown Municipal Utilities | municipal utility | 11,775 | 9.29 | $82 |
| City of Brookings | municipal utility | 10,769 | 10.69 | $94 |
| Black Hills Electric Coop, Inc | electric cooperative | 9,415 | 14.79 | $166 |
| Otter Tail Power Co | investor-owned utility | 9,094 | 11.42 | $123 |
| Central Electric Coop, Inc | electric cooperative | 6,515 | 14.67 | $225 |
| Montana-Dakota Utilities Co | investor-owned utility | 6,348 | 12.99 | $111 |
| City of Pierre | municipal utility | 6,183 | 10.94 | $99 |
| Northern Electric Coop, Inc | electric cooperative | 5,823 | 11.43 | $239 |
| Rosebud Electric Coop Inc | electric cooperative | 4,911 | 11.88 | $137 |
| MidAmerican Energy Co | investor-owned utility | 4,236 | 8.90 | $99 |
| Dakota Energy Coop Inc | electric cooperative | 3,231 | 16.28 | $276 |
| City of Madison | municipal utility | 2,818 | 12.41 | $131 |
| Oahe Electric Coop Inc | electric cooperative | 2,335 | 10.54 | $170 |
| City of Volga | municipal utility | 1,094 | 12.79 | $119 |
| Nebraska Public Power District | public power utility | 1,047 | 10.08 | $124 |
Reliability across South Dakota in 2025: the average customer was without power for 268 minutes over 1.33 interruptions, or 61 minutes excluding major storms and other major event days. This is EIA's state total for utilities reporting under any standard, covering 406,209 customers.
If your bill is hard to pay
The federal Low Income Home Energy Assistance Program (LIHEAP) helps with heating and cooling bills. Find your state office on the LIHEAP page. Your state utility commission handles complaints about utility billing and rates.
Sources
- US Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 and 2024 detailed data (Sales to Ultimate Customers, Reliability, Service Territory, Average Bill)
- US Energy Information Administration, Electric power sales, revenue, and energy efficiency, Form EIA-861M detailed data (sales_revenue.xlsx), monthly 2010 to August 2026
- US Energy Information Administration, Electric Power Monthly, Table 5.6.A and Table 5.6.B, average price of electricity by state (used to cross-check every state figure for August 2026)
Checked 29 October 2026. Figures for 2026 are preliminary and EIA may revise them. These are statewide averages, not the rate on your bill.