Cost to run an electric water heater in South Dakota

$0.61/hour

Electric Water Heater at 4,000 W in South Dakota (15.15¢/kWh) · $55.27/month at 3 h/day

By hours of use

Use	Per day	Per month	Per year
1 h/day	$0.61	$18.42	$221.19
2 h/day	$1.21	$36.84	$442.38
3 h/day	$1.82	$55.27	$663.57
4 h/day	$2.42	$73.69	$884.76
8 h/day	$4.85	$147.38	$1,769.52
12 h/day	$7.27	$221.07	$2,654.28
24 h/day	$14.54	$442.14	$5,308.56

Tank water heaters use 3,000-5,500 W elements; a family typically runs them 2-4 hours a day. Heat-pump models use about a third.

How much does it cost to run an electric water heater in South Dakota?

At 4,000 W and 15.15¢/kWh: $0.61 per hour, $1.82 per day and $55.27 per month at 3 h/day.

How does South Dakota compare with other states?

The same use costs $46.40/month in Nevada (cheapest) and $172.11/month in Hawaii (most expensive); the US average is $66.25.

Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).

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