South Dakota electricity prices, May 2026
- Month
- May 2026, preliminary
- File
- Form EIA-861M
- Price among 51
- 31st from the highest
The average residential price in South Dakota was 15.73 cents per kilowatt-hour (kWh) in May 2026. Preliminary
In May 2025, the price was 14.33 cents per kWh. The May 2026 price was 1.40 cents per kWh higher than the May 2025 price.
The US average was 18.44 cents per kWh in May 2026. In May 2026, South Dakota had the 31st highest average residential price among the 50 states and the District of Columbia.
The average bill of a residential customer for the month was $126.61, for 805 kWh. A bill for one month changes with the season.
EIA marks this month as preliminary. EIA adjusts the months of a year when the final Form EIA-861 data for the year are ready.
Average price of electricity to ultimate consumers represents the cost per unit of electricity sold and is calculated by dividing electric revenue from ultimate consumers by the corresponding sales of electricity.
The average price of electricity to ultimate consumers reported in this publication by sector represents a weighted average of consumer revenue and sales, and does not equal the per kWh rate charged by the electric power industry participant to the individual consumers.
EIA's words. Source: U.S. Energy Information Administration, Electric Power Monthly, Technical notes, section "Form EIA-861" (March 2024). "This publication" is the Electric Power Monthly.
In plain words: the average price is revenue divided by sales. It is not the rate on a rate schedule. The figures on this page are EIA's own state averages. Monthly data through .
Average price by sector
Cents per kWh
| Sector | May 2026 cents per kWh | May 2025 cents per kWh | Change percent | US, May 2026 cents per kWh |
|---|---|---|---|---|
| Residential | 15.73 | 14.33 | +9.8% | 18.44 |
| Commercial | 11.78 | 10.95 | +7.6% | 13.54 |
| Industrial | 9.78 | 8.93 | +9.5% | 8.71 |
| All sectors | 12.61 | 11.61 | +8.6% | 13.83 |
Sales, customers and bill
Residential, unless the row says all sectors
| Figure | May 2026 | May 2025 | Change percent |
|---|---|---|---|
| Residential sales | 361.3 GWh | 345.1 GWh | +4.7% |
| Sales, all sectors | 1.1 TWh | 1 TWh | +5.7% |
| Residential customers | 448,859 | 442,951 | +1.3% |
| Average residential bill (dollars in the month) | $126.61 | $111.67 | +13.4% |
| Average residential use (kWh in the month) | 805 | 779 | +3.3% |
| US residential price (cents per kWh) | 18.44 | 17.37 | +6.2% |
The 25 months to May 2026
Form EIA-861M
South Dakota, residentialUS, residential
Where the figures come from
Source: U.S. Energy Information Administration, Form EIA-861M sales and revenue workbook (state by sector and month). EIA status of this month: preliminary. The series runs through July 2026. The average price is revenue divided by sales. The average bill is residential revenue divided by residential customers. The annual figures of each utility are on the South Dakota page.
Questions about May 2026 in South Dakota
- What did businesses pay for electricity in South Dakota in May 2026?
- The average commercial price was 11.78 cents per kWh. The average industrial price was 9.78 cents per kWh. The average for all sectors was 12.61 cents per kWh.
- How much electricity did residential customers in South Dakota buy in May 2026?
- Residential customers bought 361.3 GWh of electricity in May 2026. One GWh is 1,000,000 kWh. The quantity was 4.7% higher than the quantity in May 2025.
- How many residential customers did South Dakota have in May 2026?
- South Dakota had 448,859 residential customers in May 2026. The number was 1.3% higher than the number in May 2025. A customer is one account or one meter, not one person.