Cost to Run a CPAP Machine 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 cpap machine here costs $1.58 per month.
Per hour
0.6¢
at 30–90 W
Per day
5.2¢
8 hours/day
Per month
$1.58
9.7 kWh
Per year
$18.92
117 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | 2.6¢ | $0.79 | $9.46 |
| Typical (8 hrs/day) | 5.2¢ | $1.58 | $18.92 |
| Heavy (16 hrs/day) | $0.10 | $3.15 | $37.84 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a cpap machine in South Carolina?
At South Carolina's current average residential rate of 16.2¢/kWh (May 2026), a cpap machine with typical usage costs about 5.2¢ per day, $1.58 per month, or $18.92 per year.
Is running a cpap machine in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 12% below the U.S. average: $1.58 per month here versus $1.79 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.