Cost to Run a Tankless Electric Water Heater in Maine
Maine's average residential electricity rate is 32.4¢/kWh as of July 2026 — the 49th cheapest in the country, 77% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $124 per month.
Per hour
$5.83
at 13,000–27,000 W
Per day
$4.08
0.7 hours/day
Per month
$124
383 kWh
Per year
$1,490
4,599 kWh
By usage level in Maine
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $2.04 | $62.05 | $745 |
| Typical (0.7 hrs/day) | $4.08 | $124 | $1,490 |
| Heavy (1.4 hrs/day) | $8.16 | $248 | $2,980 |
Maine 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 Maine?
At Maine's current average residential rate of 32.4¢/kWh (July 2026), a tankless electric water heater with typical usage costs about $4.08 per day, $124 per month, or $1,490 per year.
Is running a tankless electric water heater in Maine more expensive than average?
Yes. Maine's electricity costs about 77% more than the U.S. average, so the same usage costs $124 per month here versus $70.10 nationally.
What does electricity cost in Maine right now?
Maine residents pay an average of 32.4¢ per kWh as of July 2026 — the 49th cheapest rate of the 51 U.S. jurisdictions we track.