South Dakota Electricity Prices

South Dakota's residential electricity rate stands at 15.15¢/kWh as of August 2026, placing it 35th most expensive among the 50 states and DC. This is 16.6% below the national average of 18.16¢/kWh, a difference of 3.01¢/kWh. Among bordering states, South Dakota is cheaper than Minnesota at 17.20¢/kWh and Iowa at 17.06¢/kWh, and cheaper than Montana at 15.57¢/kWh, but more expensive than Wyoming at 14.43¢/kWh and North Dakota at 13.31¢/kWh. Nebraska borders at 13.54¢/kWh. Commercial rates are 11.71¢/kWh and industrial rates are 9.43¢/kWh.

Over five years, since August 2021 when the rate was 12.80¢/kWh, South Dakota's residential price has risen 18.4%, and over 8.4% in the past year alone. Over the longer term, the rate has climbed 89.4% since August 2006 at 8.00¢/kWh, and 132.4% since records began in January 2001 at 6.52¢/kWh. The current rate sits just below the state record high set in May 2026 at 15.73¢/kWh.

South Dakota's average monthly residential bill is $141 at current usage of 989 kWh per month. This compares with the national average bill of $158 on usage of 876 kWh per month. Though the rate is below the national average, South Dakota residents use more electricity each month, keeping the bill lower through volume even as per-unit costs run cheaper.