Cost to Run a Grow Light in Hawaii
Hawaii's average residential electricity rate is 48¢/kWh as of July 2026 — the 51st cheapest in the country, 162% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $61.29 per month.
Per hour
$0.14
at 100–650 W
Per day
$2.02
14 hours/day
Per month
$61.29
128 kWh
Per year
$736
1,533 kWh
By usage level in Hawaii
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $1.01 | $30.64 | $368 |
| Typical (14 hrs/day) | $2.02 | $61.29 | $736 |
| Heavy (24 hrs/day) | $4.03 | $123 | $1,472 |
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 48¢/kWh (July 2026), a grow light with typical usage costs about $2.02 per day, $61.29 per month, or $736 per year.
Is running a grow light in Hawaii more expensive than average?
Yes. Hawaii's electricity costs about 162% more than the U.S. average, so the same usage costs $61.29 per month here versus $23.37 nationally.
What does electricity cost in Hawaii right now?
Hawaii residents pay an average of 48¢ per kWh as of July 2026 — the 51st cheapest rate of the 51 U.S. jurisdictions we track.