Average monthly bill
$131.10
13% below the US $150.68
Price per kWh
13.32 cents
US average 17.23 cents
Monthly use
984 kWh
US average 874 kWh
Homes counted
446 thousand
Residential customers, 2025
How South Dakota compares
Low prices keep the South Dakota bill down. Prices run 23% below the national price, and households use 13% more electricity than the typical US household.
Over a year, the average South Dakota household pays about $1,573 for electricity. The state ranks 17th lowest for the monthly bill, 14th lowest for price per kWh and 18th highest for use, out of 51 places (50 states and DC).
| Place | Monthly bill | Cents per kWh | kWh per month |
|---|---|---|---|
| South Dakota | $131.10 | 13.32 | 984 |
| United States | $150.68 | 17.23 | 874 |
| Iowa | $117.30 | 13.62 | 861 |
| Minnesota | $117.67 | 15.83 | 744 |
| Montana | $110.80 | 12.99 | 853 |
| North Dakota | $126.40 | 11.82 | 1,070 |
| Nebraska | $117.23 | 12.05 | 973 |
| Wyoming | $111.59 | 13.37 | 835 |
Source: EIA Form EIA-861 final 2025 data, residential sector. Bills are revenue divided by customers, divided by 12.
Want to see where your own bill falls? Use the bill checker or read the average bill guide for apartments, houses and different household sizes.
Who supplies the power
Investor-owned utilities serve the largest share of South Dakota households at 64%. electric cooperatives (26%) and municipal utilities (9%) cover most of the rest. EIA lists 21 utilities and electricity suppliers with customers in South Dakota.
- Investor-owned64.4%
- Cooperative26.3%
- Municipal9.0%
| Provider | Type | Homes served |
|---|---|---|
| Black Hills Power | Investor-owned | 69,800 |
| NorthWestern Energy South Dakota | Investor-owned | 51,787 |
| Sioux Valley Southwestern Electric Cooperative | Cooperative | 26,360 |
| Southeastern Electric Cooperative | Cooperative | 20,959 |
| West River Electric Association | Cooperative | 18,975 |
| Watertown Municipal Utilities | Municipal | 11,775 |
| City of Brookings | Municipal | 10,769 |
| Black Hills Electric Cooperative | Cooperative | 9,415 |
See every utility that reports customers here on the electric companies in South Dakota page.
If you do not know who serves your address, the find my electric company tool matches your county to a utility.
Can you choose your electricity supplier in South Dakota?
South Dakota does not offer household retail electricity choice. Households buy electricity from the utility that serves their address. That utility can be an investor-owned company, a municipal system or a cooperative, and its rates are set by its regulator or its own board. You can still lower your bill with a better rate plan, efficiency upgrades and bill help programs.
Reliability and rooftop solar
Utilities in South Dakota reported an average of 1 hour and 4 minutes without power per customer in 2025, with 0.76 interruptions per customer, when major storm days are left out. That outage time is shorter than the median state (127 minutes).
Customers in South Dakota had 622 net-metered residential solar systems with a combined 4.9 megawatts of capacity in 2025. That works out to 1.4 systems for every 1,000 households, which ranks 48 of 51 places. Net metering lets a home with solar offset what it uses from the grid, so it changes the bill math for those households. Our net metering guide explains how the credit works.
Outage figures are reported by utilities and follow different standards, so compare states with care. The median state averaged 127 minutes of outage per customer in 2025.
Ways to lower your South Dakota electric bill
- Start with cooling and water heating. South Dakota households use 13% more electricity than the typical US home, so the biggest savings usually sit in air conditioning, space heating and water heating. Our guide to lowering your bill covers the fixes.
- Ask about time-of-use pricing. 3 of the 8 largest providers report residential time-of-use programs in EIA data. If you can shift laundry, charging and cooling to cheaper hours, the savings can be real. Our time-of-use guide explains how to test it.
- Ask about budget billing. Many utilities spread costs across the year. Read how budget billing works before you sign up.
- Price your appliances. The electricity cost calculator shows what a space heater, dryer or pool pump costs to run at your rate.
Regulator and consumer help
Electric rates and consumer complaints in South Dakota are handled by the South Dakota Public Utilities Commission. If you have a billing dispute you could not settle with your utility, the regulator is the next step.
About these numbers
South Dakota electricity questions
What is the average electric bill in South Dakota?
The average residential electric bill in South Dakota was $131.10 a month in 2025, based on 984 kWh of use at 13.32 cents per kWh (EIA Form EIA-861). The US average was $150.68.
Is electricity expensive in South Dakota?
The price of 13.32 cents per kWh is 23% below the US average of 17.23 cents and ranks 14th lowest among the 50 states and DC. The monthly bill is 13% below the US average, because bills depend on how much power households use as well as the price.
Can I choose my electricity company in South Dakota?
No. Most households buy electricity from the utility that serves their address, whether that is an investor-owned company, a municipal utility or a cooperative.
Which companies serve the most households in South Dakota?
By residential customers in 2025, the largest were Black Hills Power (70 thousand), NorthWestern Energy South Dakota (52 thousand), Sioux Valley Southwestern Electric Cooperative (26 thousand).
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