Cost to Run a Desktop Computer 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 (6 hours/day), a desktop computer here costs $6.43 per month.
Per hour
3.4¢
at 100–400 W
Per day
$0.21
6 hours/day
Per month
$6.43
38 kWh
Per year
$77.14
451 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (3 hrs/day) | $0.11 | $3.21 | $38.57 |
| Typical (6 hrs/day) | $0.21 | $6.43 | $77.14 |
| Heavy (12 hrs/day) | $0.42 | $12.85 | $154 |
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 17.1¢/kWh (April 2026), a desktop computer with typical usage costs about $0.21 per day, $6.43 per month, or $77.14 per year.
Is running a desktop computer in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 9% below the U.S. average: $6.43 per month here versus $7.06 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.