US PowerGrade

The average electric bill in South Dakota

South Dakota households paid $131.10 a month for electricity in 2025, at 13.32¢ per kilowatt-hour for 984 kWh a month. That is 11% below the national median, and ranks #35 of 51 states, most expensive first.

Monthly bill
$131.10
US median $147.18
Price
13.32¢
per kWh · US 15.39¢
Usage
984
kWh per month
Households
446,014
residential accounts

What each South Dakota utility charges, most expensive first

Dakota Energy Coop Inc charges 16.28¢ per kWh and MidAmerican Energy Co charges 8.90¢ — 1.8× apart inside one state. You do not usually get to choose between them; your address does.

#UtilityPriceTypical billvs US median
1Dakota Energy Coop IncCooperative · 3,231 homes16.28¢per kWh$275.691,694 kWh/mo1.18× dearer
2West River Electric Assn IncCooperative · 18,975 homes15.16¢per kWh$135.78896 kWh/mo1.10× dearer
3Black Hills Power, Inc.Investor Owned · 67,608 homes15.12¢per kWh$105.88700 kWh/mo1.09× dearer
4Black Hills Electric Coop, IncCooperative · 9,415 homes14.79¢per kWh$165.831,122 kWh/mo1.07× dearer
5Central Electric Coop, Inc - (SD)Cooperative · 6,515 homes14.67¢per kWh$225.501,537 kWh/mo1.06× dearer
6Sioux Valley SW Elec CoopCooperative · 22,989 homes13.94¢per kWh$176.421,265 kWh/mo1.01× dearer
7NorthWestern Energy - (SD)Investor Owned · 51,787 homes13.35¢per kWh$125.34939 kWh/mo1.04× cheaper
8Northern States Power Co - MinnesotaInvestor Owned · 94,137 homes13.13¢per kWh$101.24771 kWh/mo1.05× cheaper
9Montana-Dakota Utilities CoInvestor Owned · 6,348 homes12.99¢per kWh$110.69852 kWh/mo1.07× cheaper
10Southeastern Electric Coop Inc - (SD)Cooperative · 20,959 homes12.98¢per kWh$151.371,167 kWh/mo1.07× cheaper
11City of Volga - (SD)Municipal · 1,094 homes12.79¢per kWh$118.87929 kWh/mo1.08× cheaper
12City of Madison - (SD)Municipal · 2,818 homes12.41¢per kWh$131.211,057 kWh/mo1.12× cheaper
13Rosebud Electric Coop IncCooperative · 4,911 homes11.88¢per kWh$137.051,154 kWh/mo1.16× cheaper
14Northern Electric Coop, IncCooperative · 5,823 homes11.43¢per kWh$239.292,094 kWh/mo1.21× cheaper
15Otter Tail Power CoInvestor Owned · 9,094 homes11.42¢per kWh$123.341,080 kWh/mo1.21× cheaper
16City of Pierre - (SD)Municipal · 6,183 homes10.94¢per kWh$98.71902 kWh/mo1.27× cheaper
17City of Brookings - (SD)Municipal · 10,769 homes10.69¢per kWh$94.09880 kWh/mo1.29× cheaper
18Oahe Electric Coop IncCooperative · 2,335 homes10.54¢per kWh$169.881,612 kWh/mo1.31× cheaper
19Nebraska Public Power DistrictPolitical Subdivision · 1,047 homes10.08¢per kWh$124.441,234 kWh/mo1.37× cheaper
20Watertown Municipal UtilitiesMunicipal · 11,775 homes9.29¢per kWh$82.26886 kWh/mo1.49× cheaper
21MidAmerican Energy CoInvestor Owned · 4,236 homes8.90¢per kWh$99.401,117 kWh/mo1.56× cheaper

Price is residential revenue divided by residential kilowatt-hours sold, for bundled service only. Typical bill is that utility’s residential revenue spread over its residential accounts and twelve months, not a quoted tariff. The median priced utility charges 13.84¢ per kWh.

Price is only half of it

The median South Dakota utility also leaves customers without power for 2.4 hours a year. A cheap utility that is out for two days a year is not obviously a bargain. See South Dakota utilities ranked by outage time, or the utilities that charge the most and deliver the least.

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