Northern States Power Co - Minnesota Electricity Rates and Average Bill (South Dakota)
Data through August 2026 (the latest month EIA has published) · Updated October 31, 2026
As of August 2026, Northern States Power Co - Minnesota's residential customers in South Dakota paid an average effective rate of 14.33¢/kWh with an average monthly bill of $134.02, per EIA Form 861-M data. That rate is 0.8¢ below the South Dakota average of 15.15¢/kWh; the U.S. average is 18.16¢/kWh.
Rate trend vs the South Dakota average
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| September 2025 | 14.88 | 109.51 | 736 |
| October 2025 | 11.85 | 82.99 | 701 |
| November 2025 | 13.75 | 87.10 | 633 |
| December 2025 | 10.57 | 88.43 | 836 |
| January 2026 | 18.00 | 150.15 | 834 |
| February 2026 | 13.29 | 90.28 | 679 |
| March 2026 | 16.29 | 109.88 | 675 |
| April 2026 | 15.63 | 95.96 | 614 |
| May 2026 | 17.58 | 123.29 | 701 |
| June 2026 | 14.90 | 121.50 | 815 |
| July 2026 | 17.40 | 201.81 | 1160 |
| August 2026 | 14.33 | 134.02 | 935 |
Northern States Power Co - Minnesota vs South Dakota vs the U.S.
| Northern States Power Co - Minnesota | South Dakota | U.S. average | |
|---|---|---|---|
| Rate (August 2026) | 14.33¢/kWh | 15.15¢/kWh | 18.16¢/kWh |
| Average monthly bill | $134.02 | $160.09 | $209.23 |
| Average monthly usage | 935 kWh | 1057 kWh | 1152 kWh |
| Rate change, 1 year | +12.7% | +9.0% | +3.4% |
Estimate a bill at Northern States Power Co - Minnesota rates
Worked example: 1,000 kWh at Northern States Power Co - Minnesota's average effective rate of 14.33¢/kWh is about $143.30. The utility's actual average usage is 935 kWh/month, which produces the $134.02 average bill. This is an all-in average (energy, delivery, fixed charges, riders); your tariff's marginal price will differ.
See the full South Dakota rate trend, look up another utility by ZIP code, or read why electric bills are rising.
Source: EIA Form 861-M (monthly utility-level sales to ultimate customers, residential), published with roughly a two-month lag. Rate = revenue ÷ sales; bill = revenue ÷ customers. Months failing basic sanity screens are excluded. See methodology.