Cost to Run a Tankless Electric Water Heater 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 (0.7 hours/day), a tankless electric water heater here costs $108 per month.
Per hour
$5.09
at 13,000–27,000 W
Per day
$3.57
0.7 hours/day
Per month
$108
383 kWh
Per year
$1,302
4,599 kWh
By usage level in Rhode Island
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.78 | $54.20 | $651 |
| Typical (0.7 hrs/day) | $3.57 | $108 | $1,302 |
| Heavy (1.4 hrs/day) | $7.13 | $217 | $2,603 |
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 28.3¢/kWh (April 2026), a tankless electric water heater with typical usage costs about $3.57 per day, $108 per month, or $1,302 per year.
Is running a tankless electric water heater 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 $108 per month here versus $72.01 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.