Cost to Run a Portable Air Conditioner in South Carolina
South Carolina's average residential electricity rate is 17.1¢/kWh as of April 2026 — the 29th cheapest in the country, 9% below the U.S. average. At typical usage (8 hours/day), a portable air conditioner here costs $41.59 per month.
Per hour
$0.17
at 700–1,500 W
Per day
$1.37
8 hours/day
Per month
$41.59
243 kWh
Per year
$499
2,920 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.68 | $20.79 | $250 |
| Typical (8 hrs/day) | $1.37 | $41.59 | $499 |
| Heavy (16 hrs/day) | $2.74 | $83.17 | $999 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a portable air conditioner in South Carolina?
At South Carolina's current average residential rate of 17.1¢/kWh (April 2026), a portable air conditioner with typical usage costs about $1.37 per day, $41.59 per month, or $499 per year.
Is running a portable air conditioner in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 9% below the U.S. average: $41.59 per month here versus $45.72 nationally.
What does electricity cost in South Carolina right now?
South Carolina residents pay an average of 17.1¢ per kWh as of April 2026 — the 29th cheapest rate of the 51 U.S. jurisdictions we track.