Electricity in South Dakota averaged 15.15¢ per kWh in August 2026 and 14.58¢ for Jan–Aug 2026 — the 35th most expensive state, 17% below the U.S. average of 18.16¢.
| Use | South Dakota | U.S. average |
|---|---|---|
| 500 kWh | $72.90 | $90.95 |
| 1,000 kWh | $145.80 | $181.90 |
| 1,500 kWh | $218.70 | $272.85 |
| 1,005 kWh (yours) | $146.53 | $182.81 |
| Fuel | Price | Basis |
|---|---|---|
| Electricity | 14.58¢/kWh | Jan–Aug 2026 |
| Natural gas | $0.95/therm | 2025 average |
| Propane | $1.87/gal | Oct 19, 2026, pre-tax |
| Monthly use | August 2026 | Jan–Aug 2026 | U.S. average |
|---|---|---|---|
| 500 kWh | $75.75 | $72.90 | $90.95 |
| 1,000 kWh | $151.50 | $145.80 | $181.90 |
| 1,500 kWh | $227.25 | $218.70 | $272.85 |
| 1,005 kWh (state average) | $152.26 | $146.53 | $182.81 |
These are EIA's average residential prices: total revenue from residential customers divided by kWh sold. Delivery charges, fixed monthly customer charges, fuel adjustments and utility-paid taxes are all spread over every kWh, so the figure is close to an all-in rate (bill ÷ kWh). Your own utility, plan and usage tier can put you above or below it.
August 2026 figures are preliminary and EIA revises them; we refresh this page automatically when EIA publishes a new month (last update 2026-10-23).
The full method, material data and tips are on the main electricity rates by state page.