Cost to Run a Grow Light in South Carolina
South Carolina's average residential electricity rate is 15.5¢/kWh as of July 2026 — the 20th cheapest in the country, 15% below the U.S. average. At typical usage (14 hours/day), a grow light here costs $19.79 per month.
Per hour
4.7¢
at 100–650 W
Per day
$0.65
14 hours/day
Per month
$19.79
128 kWh
Per year
$238
1,533 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.33 | $9.90 | $119 |
| Typical (14 hrs/day) | $0.65 | $19.79 | $238 |
| Heavy (24 hrs/day) | $1.30 | $39.58 | $475 |
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 15.5¢/kWh (July 2026), a grow light with typical usage costs about $0.65 per day, $19.79 per month, or $238 per year.
Is running a grow light in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 15% below the U.S. average: $19.79 per month here versus $23.37 nationally.
What does electricity cost in South Carolina right now?
South Carolina residents pay an average of 15.5¢ per kWh as of July 2026 — the 20th cheapest rate of the 51 U.S. jurisdictions we track.