Cost to Run a Desktop Computer 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 (6 hours/day), a desktop computer here costs $6.09 per month.
Per hour
3.2¢
at 100–400 W
Per day
$0.20
6 hours/day
Per month
$6.09
38 kWh
Per year
$73.08
451 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (3 hrs/day) | $0.10 | $3.04 | $36.54 |
| Typical (6 hrs/day) | $0.20 | $6.09 | $73.08 |
| Heavy (12 hrs/day) | $0.40 | $12.17 | $146 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a desktop computer in South Carolina?
At South Carolina's current average residential rate of 16.2¢/kWh (May 2026), a desktop computer with typical usage costs about $0.20 per day, $6.09 per month, or $73.08 per year.
Is running a desktop computer in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 12% below the U.S. average: $6.09 per month here versus $6.91 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.