Cost to Run a Grow Light in Hawaii
Hawaii's average residential electricity rate is 52¢/kWh as of May 2026 — the 51st cheapest in the country, 183% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $66.39 per month.
Per hour
$0.16
at 100–650 W
Per day
$2.18
14 hours/day
Per month
$66.39
128 kWh
Per year
$797
1,533 kWh
By usage level in Hawaii
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $1.09 | $33.20 | $399 |
| Typical (14 hrs/day) | $2.18 | $66.39 | $797 |
| Heavy (24 hrs/day) | $4.37 | $133 | $1,594 |
Hawaii 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 Hawaii?
At Hawaii's current average residential rate of 52¢/kWh (May 2026), a grow light with typical usage costs about $2.18 per day, $66.39 per month, or $797 per year.
Is running a grow light in Hawaii more expensive than average?
Yes. Hawaii's electricity costs about 183% more than the U.S. average, so the same usage costs $66.39 per month here versus $23.49 nationally.
What does electricity cost in Hawaii right now?
Hawaii residents pay an average of 52¢ per kWh as of May 2026 — the 51st cheapest rate of the 51 U.S. jurisdictions we track.