Cost to run an electric water heater in South Carolina

$0.63/hour

Electric Water Heater at 4,000 W in South Carolina (15.76¢/kWh) · $57.49/month at 3 h/day

By hours of use

Use	Per day	Per month	Per year
1 h/day	$0.63	$19.16	$230.10
2 h/day	$1.26	$38.33	$460.19
3 h/day	$1.89	$57.49	$690.29
4 h/day	$2.52	$76.66	$920.38
8 h/day	$5.04	$153.31	$1,840.77
12 h/day	$7.56	$229.97	$2,761.15
24 h/day	$15.13	$459.94	$5,522.30

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 Carolina?

At 4,000 W and 15.76¢/kWh: $0.63 per hour, $1.89 per day and $57.49 per month at 3 h/day.

How does South Carolina 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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