Cost to Run a CPAP Machine 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 cpap machine here costs $1.66 per month.
Per hour
0.7¢
at 30–90 W
Per day
5.5¢
8 hours/day
Per month
$1.66
9.7 kWh
Per year
$19.97
117 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | 2.7¢ | $0.83 | $9.99 |
| Typical (8 hrs/day) | 5.5¢ | $1.66 | $19.97 |
| Heavy (16 hrs/day) | $0.11 | $3.33 | $39.95 |
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 17.1¢/kWh (April 2026), a cpap machine with typical usage costs about 5.5¢ per day, $1.66 per month, or $19.97 per year.
Is running a cpap machine in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 9% below the U.S. average: $1.66 per month here versus $1.83 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.