WattCost

Data through June 2026

Cost to run · New Hampshire · 27.0¢/kWh residential average

How much does it cost to run an electric water heater in New Hampshire?

$327/yr · median certified model

At 27.0¢/kWh, New Hampshire ranks among the priciest states for power. The typical certified electric water heater runs about $327 annually here, which makes choosing an efficient model worth actual dollars, not rounding error.

In the national ranking, New Hampshire lands at 44 of 51 for what an electric water heater costs to run. Model choice matters as much as geography: at New Hampshire rates the most efficient certified model (Eco-Logical OMNI-50HP1-1A) costs $184 a year while the most power-hungry (Smart Solar SSG2-ES 120) costs $470 — a spread of $286 every year. For reference, the national extremes are Nevada (13.1¢/kWh) and Hawaii (52.7¢/kWh); the same median electric water heater would cost $159 and $638 a year there.

New Hampshire
$327
US average
$222
Nevada
$159
Hawaii
$638
Median certified electric water heater (1,210 kWh/yr) per year, at each rate

The cheapest water heaters (electric) to run at New Hampshire rates

Price any model at New Hampshire rates

Your rate, your numbers

Per day
90¢
Per month
$27.24
Per year
$327

1,210 kWh/yr × 27.0¢/kWh = $327/yr

Prefilled with the median certified electric water heater (1,210 kWh/yr). Every model page on this site carries its exact certified figure.

Questions, answered with the data

How much does it cost to run an electric water heater in New Hampshire?
About $327 a year for the median ENERGY STAR certified electric water heater, at New Hampshire's average residential rate of 27.0¢/kWh — that's $27.24 a month.
Is electricity expensive in New Hampshire?
New Hampshire's residential average of 27.0¢/kWh is 47% above the U.S. average of 18.3¢/kWh, ranking 44 of 51 jurisdictions (1 = cheapest).
What's the cheapest electric water heater to run in New Hampshire?
Among currently certified models, the Eco-Logical OMNI-50HP1-1A costs the least at about $184 a year at New Hampshire rates (681 kWh/yr).
How does New Hampshire compare with other states?
The same median electric water heater costs $159 a year in Nevada (the cheapest state) and $638 in Hawaii (the priciest). New Hampshire sits at $327.

Keep digging

Rate source: US EIA, average residential price of electricity, see methodology.