Cost to Run a Grow Light in Hawaii
Hawaii's average residential electricity rate is 46.6¢/kWh as of April 2026 — the 51st cheapest in the country, 148% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $59.50 per month.
Per hour
$0.14
at 100–650 W
Per day
$1.96
14 hours/day
Per month
$59.50
128 kWh
Per year
$714
1,533 kWh
By usage level in Hawaii
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.98 | $29.75 | $357 |
| Typical (14 hrs/day) | $1.96 | $59.50 | $714 |
| Heavy (24 hrs/day) | $3.91 | $119 | $1,429 |
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 46.6¢/kWh (April 2026), a grow light with typical usage costs about $1.96 per day, $59.50 per month, or $714 per year.
Is running a grow light in Hawaii more expensive than average?
Yes. Hawaii's electricity costs about 148% more than the U.S. average, so the same usage costs $59.50 per month here versus $24.00 nationally.
What does electricity cost in Hawaii right now?
Hawaii residents pay an average of 46.6¢ per kWh as of April 2026 — the 51st cheapest rate of the 51 U.S. jurisdictions we track.