Cost to Run a Grow Light 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 (14 hours/day), a grow light here costs $21.83 per month.
Per hour
5.1¢
at 100–650 W
Per day
$0.72
14 hours/day
Per month
$21.83
128 kWh
Per year
$262
1,533 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.36 | $10.92 | $131 |
| Typical (14 hrs/day) | $0.72 | $21.83 | $262 |
| Heavy (24 hrs/day) | $1.44 | $43.67 | $524 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a grow light in South Carolina?
At South Carolina's current average residential rate of 17.1¢/kWh (April 2026), a grow light with typical usage costs about $0.72 per day, $21.83 per month, or $262 per year.
Is running a grow light in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 9% below the U.S. average: $21.83 per month here versus $24.00 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.