Cost to Run a Heat Pump Water Heater in South Carolina
South Carolina's average residential electricity rate is 15.5¢/kWh as of July 2026 — the 20th cheapest in the country, 15% below the U.S. average. At typical usage (3 hours/day), a heat pump water heater here costs $14.14 per month.
Per hour
$0.15
at 400–1,500 W
Per day
$0.46
3 hours/day
Per month
$14.14
91 kWh
Per year
$170
1,095 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $0.23 | $7.07 | $84.86 |
| Typical (3 hrs/day) | $0.46 | $14.14 | $170 |
| Heavy (6 hrs/day) | $0.93 | $28.27 | $339 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a heat pump water heater in South Carolina?
At South Carolina's current average residential rate of 15.5¢/kWh (July 2026), a heat pump water heater with typical usage costs about $0.46 per day, $14.14 per month, or $170 per year.
Is running a heat pump water heater in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 15% below the U.S. average: $14.14 per month here versus $16.69 nationally.
What does electricity cost in South Carolina right now?
South Carolina residents pay an average of 15.5¢ per kWh as of July 2026 — the 20th cheapest rate of the 51 U.S. jurisdictions we track.