Cost to Run a Tankless Electric Water Heater 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 (0.7 hours/day), a tankless electric water heater here costs $113 per month.
Per hour
$5.31
at 13,000–27,000 W
Per day
$3.72
0.7 hours/day
Per month
$113
383 kWh
Per year
$1,357
4,599 kWh
By usage level in Rhode Island
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.86 | $56.50 | $678 |
| Typical (0.7 hrs/day) | $3.72 | $113 | $1,357 |
| Heavy (1.4 hrs/day) | $7.43 | $226 | $2,713 |
Rhode Island vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a tankless electric water heater in Rhode Island?
At Rhode Island's current average residential rate of 29.5¢/kWh (May 2026), a tankless electric water heater with typical usage costs about $3.72 per day, $113 per month, or $1,357 per year.
Is running a tankless electric water heater 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 $113 per month here versus $70.48 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.