States › South Dakota › December 2025
South Dakota electricity prices, December 2025
Average price, sales and bills for the month against the same month a year earlier and the US. Preliminary
In December 2025, residential customers in South Dakota paid an average of 12.51¢ per kilowatthour, up 2.0% on the same month a year earlier (12.27¢). The US average for the month was 17.24¢; South Dakota was 27% below that. It ranked 45th highest among the 50 states and the District of Columbia.
Residential sales were 524,103 MWh, little changed on a year earlier, and the average residential bill for the month was $146.78 on 1,174 kWh. Weather moves monthly sales far more than prices do, so bills swing with the season.
EIA marks this month as preliminary. Preliminary months come from the Form EIA-861M sample and are revised when the annual census is complete.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Monthly figures come from the Form EIA-861M sample and are revised when EIA finalises the year.
Price by sector
| Sector | Dec 2025 | Dec 2024 | Change | US, Dec 2025 |
|---|---|---|---|---|
| Residential | 12.51¢ | 12.27¢ | +2.0% | 17.24¢ |
| Commercial | 10.43¢ | 10.56¢ | -1.2% | 13.63¢ |
| Industrial | 8.45¢ | 8.40¢ | +0.6% | 8.53¢ |
| All sectors | 10.89¢ | 10.82¢ | +0.6% | 13.73¢ |
Sales and customers
| Measure | Dec 2025 | Dec 2024 | Change |
|---|---|---|---|
| Residential sales | 524.1 GWh | 520.6 GWh | +0.7% |
| Sales, all sectors | 1.3 TWh | 1.2 TWh | +2.7% |
| Residential customers | 446,613 | 437,440 | +2.1% |
| Average residential bill | $146.78 | $145.96 | +0.6% |
| Average residential use, kWh | 1,174 | 1,190 | -1.3% |
| US residential price | 17.24¢ | 16.27¢ | +6.0% |
The two years to December 2025
South Dakota residentialUS residential
Questions and answers
What was the average electricity price in South Dakota in December 2025?
12.51¢ per kilowatthour for residential customers, 10.43¢ for commercial and 8.45¢ for industrial customers. EIA marks the month as preliminary.
How does that compare with a year earlier?
The residential average was 12.27¢ in December 2024, a change of +2.0%. Residential sales changed by +0.7% over the same period.
What was the average residential bill that month?
$146.78, on average use of 1,174 kWh. This is residential revenue divided by residential customers for the month.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861M sales and revenue workbook (state by sector and month), status "Preliminary" for this month, series published through July 2026. Public domain. Price = revenue ÷ sales; bill = residential revenue ÷ residential customers. Utility-level annual figures are on the South Dakota page.