SD · ranked #42 in the US
South Dakota residential rate: 12.7¢/kWh
That's 23% lower than the US average of 16.5¢/kWh. Wind and hydro (Missouri River dams) provide cheap baseload; winter heating is the dominant load.
Estimated cost
$42.86/month
$1.43 per day$521.49 per year337.5 kWh monthly
W
A space heater draws full power only while the thermostat/compressor is running — about 7.5 effective hours at 1500W across your 10-hour window.
At your rate
What appliances cost in South Dakota.
Typical monthly running cost at 12.7¢/kWh, sorted by biggest impact on your bill.
Utilities serving South Dakota
- Xcel Energy (Northern States Power)
- Otter Tail Power
- Black Hills Energy
- Montana-Dakota Utilities
Deregulation status
none
In South Dakota your utility is both the supplier and the deliverer. No supplier shopping, but regulated rates tend to be more stable.
Sources: www.eia.gov · puc.sd.gov
Last updated: 2026-04-13