Cost to Run a Heat Pump Water Heater in Maine
Maine's average residential electricity rate is 28.6¢/kWh as of May 2026 — the 46th cheapest in the country, 55% above the U.S. average. At typical usage (3 hours/day), a heat pump water heater here costs $26.08 per month.
Per hour
$0.29
at 400–1,500 W
Per day
$0.86
3 hours/day
Per month
$26.08
91 kWh
Per year
$313
1,095 kWh
By usage level in Maine
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $0.43 | $13.04 | $157 |
| Typical (3 hrs/day) | $0.86 | $26.08 | $313 |
| Heavy (6 hrs/day) | $1.72 | $52.17 | $626 |
Maine vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a heat pump water heater in Maine?
At Maine's current average residential rate of 28.6¢/kWh (May 2026), a heat pump water heater with typical usage costs about $0.86 per day, $26.08 per month, or $313 per year.
Is running a heat pump water heater in Maine more expensive than average?
Yes. Maine's electricity costs about 55% more than the U.S. average, so the same usage costs $26.08 per month here versus $16.78 nationally.
What does electricity cost in Maine right now?
Maine residents pay an average of 28.6¢ per kWh as of May 2026 — the 46th cheapest rate of the 51 U.S. jurisdictions we track.