Cost to Run a Grow Light 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 (14 hours/day), a grow light here costs $20.68 per month.
Per hour
4.9¢
at 100–650 W
Per day
$0.68
14 hours/day
Per month
$20.68
128 kWh
Per year
$248
1,533 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.34 | $10.34 | $124 |
| Typical (14 hrs/day) | $0.68 | $20.68 | $248 |
| Heavy (24 hrs/day) | $1.36 | $41.37 | $497 |
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 16.2¢/kWh (May 2026), a grow light with typical usage costs about $0.68 per day, $20.68 per month, or $248 per year.
Is running a grow light in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 12% below the U.S. average: $20.68 per month here versus $23.49 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.