Electricity rates and average bill in South Dakota
In 2025, the average South Dakota household used 984 kWh a month and paid $131, an average price of 13.3¢ per kWh. That is the 38th highest price of the 50 states and DC (U.S.: 17.2¢).
Estimate your bill · Heat pump vs furnace · Water heater cost
Monthly residential electricity price in South Dakota
Source: EIA, average residential price per month (¢/kWh); last 12 months average 14.3¢.
Electric utilities in South Dakota
Average residential price, usage and bill of each utility in 2025 (utilities and providers with at least 1,000 homes). Find yours by ZIP code in the bill calculator.
Utilities
| Name | Homes | ¢/kWh | kWh / mo | Avg. bill |
|---|---|---|---|---|
| Northern States Power Co - Minnesota Investor-owned utility | 94,137 | 13.1 | 771 | $101 |
| Black Hills Power, Inc. Investor-owned utility | 67,608 | 15.1 | 700 | $106 |
| NorthWestern Energy Investor-owned utility | 51,787 | 13.3 | 939 | $125 |
| Sioux Valley SW Elec Coop Electric cooperative | 22,989 | 13.9 | 1,265 | $176 |
| Southeastern Electric Coop Inc Electric cooperative | 20,959 | 13.0 | 1,167 | $151 |
| West River Electric Assn Inc Electric cooperative | 18,975 | 15.2 | 896 | $136 |
| Watertown Municipal Utilities Municipal utility | 11,775 | 9.3 | 886 | $82 |
| City of Brookings Municipal utility | 10,769 | 10.7 | 880 | $94 |
| Black Hills Electric Coop, Inc Electric cooperative | 9,415 | 14.8 | 1,122 | $166 |
| Otter Tail Power Co Investor-owned utility | 9,094 | 11.4 | 1,080 | $123 |
| Central Electric Coop, Inc Electric cooperative | 6,515 | 14.7 | 1,537 | $226 |
| Montana-Dakota Utilities Co Investor-owned utility | 6,348 | 13.0 | 852 | $111 |
| City of Pierre Municipal utility | 6,183 | 10.9 | 902 | $99 |
| Northern Electric Coop, Inc Electric cooperative | 5,823 | 11.4 | 2,094 | $239 |
| Rosebud Electric Coop Inc Electric cooperative | 4,911 | 11.9 | 1,154 | $137 |
| MidAmerican Energy Co Investor-owned utility | 4,236 | 8.9 | 1,117 | $99 |
| Dakota Energy Coop Inc Electric cooperative | 3,231 | 16.3 | 1,694 | $276 |
| City of Madison Municipal utility | 2,818 | 12.4 | 1,057 | $131 |
| Oahe Electric Coop Inc Electric cooperative | 2,335 | 10.5 | 1,612 | $170 |
| City of Volga Municipal utility | 1,094 | 12.8 | 929 | $119 |
| Nebraska Public Power District Political Subdivision | 1,047 | 10.1 | 1,234 | $124 |
Heating: heat pump vs. gas in South Dakota
For a 2,000 sq ft home with average insulation at a typical South Dakota location (7,683 heating degree days, weather station Huron Rgnl Ap), heating with a high-efficiency heat pump costs about $1,500 a year at the state's average electricity price, compared with $915 for a 92% gas furnace, $1,883 for propane and $3,051 for heating oil. Run it with your ZIP code and your home.
Heating fuel prices
| Natural gas, residential, 2025 | $9.86/Mcf = $0.95/therm |
| Propane, 2025/26 winter average | $1.79/gal |
| Heating oil, 2025/26 winter average (U.S., no state survey) | $4.01/gal |