Cost to Run a Tankless Electric Water Heater in New Hampshire
New Hampshire's average residential electricity rate is 26.6¢/kWh as of July 2026 — the 44th cheapest in the country, 45% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $102 per month.
Per hour
$4.79
at 13,000–27,000 W
Per day
$3.35
0.7 hours/day
Per month
$102
383 kWh
Per year
$1,223
4,599 kWh
By usage level in New Hampshire
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.68 | $50.94 | $612 |
| Typical (0.7 hrs/day) | $3.35 | $102 | $1,223 |
| Heavy (1.4 hrs/day) | $6.70 | $204 | $2,447 |
New Hampshire 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 New Hampshire?
At New Hampshire's current average residential rate of 26.6¢/kWh (July 2026), a tankless electric water heater with typical usage costs about $3.35 per day, $102 per month, or $1,223 per year.
Is running a tankless electric water heater in New Hampshire more expensive than average?
Yes. New Hampshire's electricity costs about 45% more than the U.S. average, so the same usage costs $102 per month here versus $70.10 nationally.
What does electricity cost in New Hampshire right now?
New Hampshire residents pay an average of 26.6¢ per kWh as of July 2026 — the 44th cheapest rate of the 51 U.S. jurisdictions we track.