Cost to Run a Grow Light in Rhode Island
Rhode Island's average residential electricity rate is 28.3¢/kWh as of April 2026 — the 45th cheapest in the country, 51% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $36.13 per month.
Per hour
8.5¢
at 100–650 W
Per day
$1.19
14 hours/day
Per month
$36.13
128 kWh
Per year
$434
1,533 kWh
By usage level in Rhode Island
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.59 | $18.07 | $217 |
| Typical (14 hrs/day) | $1.19 | $36.13 | $434 |
| Heavy (24 hrs/day) | $2.38 | $72.27 | $868 |
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 28.3¢/kWh (April 2026), a grow light with typical usage costs about $1.19 per day, $36.13 per month, or $434 per year.
Is running a grow light in Rhode Island more expensive than average?
Yes. Rhode Island's electricity costs about 51% more than the U.S. average, so the same usage costs $36.13 per month here versus $24.00 nationally.
What does electricity cost in Rhode Island right now?
Rhode Island residents pay an average of 28.3¢ per kWh as of April 2026 — the 45th cheapest rate of the 51 U.S. jurisdictions we track.