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Electricity cost in South Dakota
The average residential price in South Dakota was 15.15¢ per kWh in August 2026, below the US average of 18.16¢. That ranks #35 most expensive of 51 (50 states plus DC). A year earlier (August 2025) it was 13.9¢, a change of +9.0%.
| Example | Cost at 15.15¢/kWh |
|---|---|
| 1,000 W for 1 hour (1 kWh) | $0.15 |
| 100 W running 24/7 for a month | $11.06 |
| 1,500 W for 8 hours a day for a month | $55.30 |
Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A (average residential price, August 2026, preliminary; released October 23, 2026). Your utility bill rate may differ.
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Frequently asked questions
What is the average electricity rate in South Dakota?
15.15¢ per kWh for residential customers in August 2026 (EIA, preliminary).
How much does it cost to run a 1,500-watt heater 8 hours a day in South Dakota?
About $55.30 a month at 15.15¢/kWh.
Is electricity in South Dakota more expensive than average?
No: 15.15¢ vs the US average of 18.16¢ (August 2026).