Cost to Run a Grow Light in Tennessee
Tennessee's average residential electricity rate is 14.9¢/kWh as of April 2026 — the 15th cheapest in the country, 21% below the U.S. average. At typical usage (14 hours/day), a grow light here costs $19.02 per month.
Per hour
4.5¢
at 100–650 W
Per day
$0.63
14 hours/day
Per month
$19.02
128 kWh
Per year
$228
1,533 kWh
By usage level in Tennessee
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.31 | $9.51 | $114 |
| Typical (14 hrs/day) | $0.63 | $19.02 | $228 |
| Heavy (24 hrs/day) | $1.25 | $38.05 | $457 |
Tennessee 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 Tennessee?
At Tennessee's current average residential rate of 14.9¢/kWh (April 2026), a grow light with typical usage costs about $0.63 per day, $19.02 per month, or $228 per year.
Is running a grow light in Tennessee more expensive than average?
No — it's cheaper. Tennessee's rate is about 21% below the U.S. average: $19.02 per month here versus $24.00 nationally.
What does electricity cost in Tennessee right now?
Tennessee residents pay an average of 14.9¢ per kWh as of April 2026 — the 15th cheapest rate of the 51 U.S. jurisdictions we track.