Electricity prices in Watertown, SD
Households in Watertown pay 15.2¢/kWh (South Dakota average), about $149 a month for 983 kWh a month, the South Dakota household average.
Monthly electricity bill by consumption
| Consumption | Per month | Per year |
|---|---|---|
| 500 kWh a month | $76 | $909 |
| 1,000 kWh a month | $152 | $1,818 |
| 1,500 kWh a month | $227 | $2,727 |
| 2,000 kWh a month | $303 | $3,636 |
At 15.2¢/kWh, the average household price including taxes and fixed charges (August 2026). Small households usually pay a little more per kWh, large ones a little less.
Business electricity in Watertown
Commercial customers pay 11.7¢/kWh and industrial customers 9.4¢/kWh (South Dakota average).
Home running costs in Watertown
In Watertown, running an 860 sq ft home costs on average $89 a month excluding rent – 6% more expensive than the US average.
Monthly cost breakdown
Default home: 860 sq ft, 2 people, 2,500 kWh electricity a year.
Watertown compared with the average for the United States
Your biggest saving opportunity
Switching from a gas boiler to a heat pump would cut heating costs in Watertown by about $104 a year at today's prices.
Gas boiler vs heat pump calculator · Monthly home running cost calculator
Heating need through the year
Heating with a gas boiler: about 11,508 kWh a year at 5.9¢/kWh.
Solar potential in Watertown
1 kWp of solar panels produces about 1,561 kWh a year here. ($236 per year)
Not yet available for Watertown: Water.
How we calculate this
Electricity: average residential price per kWh in the state (August 2026). Heating: heating degree days for the location × floor area × building factor, priced with the gas boiler cost (state residential natural gas price). Water and rent are added when official data is available. Methodology
Nearby cities
More cities in South Dakota
Updated: