Cost to Run a Central Air Conditioner in South Carolina
South Carolina's average residential electricity rate is 16.2¢/kWh as of May 2026 — the 25th cheapest in the country, 12% below the U.S. average. At typical usage (8 hours/day), a central air conditioner here costs $138 per month.
Per hour
$0.57
at 2,000–5,000 W
Per day
$4.54
8 hours/day
Per month
$138
851 kWh
Per year
$1,656
10,220 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $2.27 | $68.95 | $828 |
| Typical (8 hrs/day) | $4.54 | $138 | $1,656 |
| Heavy (16 hrs/day) | $9.07 | $276 | $3,311 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a central air conditioner in South Carolina?
At South Carolina's current average residential rate of 16.2¢/kWh (May 2026), a central air conditioner with typical usage costs about $4.54 per day, $138 per month, or $1,656 per year.
Is running a central air conditioner in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 12% below the U.S. average: $138 per month here versus $157 nationally.
What does electricity cost in South Carolina right now?
South Carolina residents pay an average of 16.2¢ per kWh as of May 2026 — the 25th cheapest rate of the 51 U.S. jurisdictions we track.