Cost to Run a Grow Light in Rhode Island
Rhode Island's average residential electricity rate is 29.5¢/kWh as of May 2026 — the 48th cheapest in the country, 60% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $37.67 per month.
Per hour
8.8¢
at 100–650 W
Per day
$1.24
14 hours/day
Per month
$37.67
128 kWh
Per year
$452
1,533 kWh
By usage level in Rhode Island
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.62 | $18.83 | $226 |
| Typical (14 hrs/day) | $1.24 | $37.67 | $452 |
| Heavy (24 hrs/day) | $2.48 | $75.33 | $904 |
Rhode Island 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 Rhode Island?
At Rhode Island's current average residential rate of 29.5¢/kWh (May 2026), a grow light with typical usage costs about $1.24 per day, $37.67 per month, or $452 per year.
Is running a grow light in Rhode Island more expensive than average?
Yes. Rhode Island's electricity costs about 60% more than the U.S. average, so the same usage costs $37.67 per month here versus $23.49 nationally.
What does electricity cost in Rhode Island right now?
Rhode Island residents pay an average of 29.5¢ per kWh as of May 2026 — the 48th cheapest rate of the 51 U.S. jurisdictions we track.