WattCost

Data through June 2026

Cost to run · Maine · 29.6¢/kWh residential average

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

$358/yr · median certified model

At 29.6¢/kWh, Maine ranks among the priciest states for power. The typical certified electric water heater runs about $358 annually here, which makes choosing an efficient model worth actual dollars, not rounding error.

Only 3 jurisdictions cost more: Maine ranks 48 of 51 for running an electric water heater. Model choice matters as much as geography: at Maine rates the most efficient certified model (Eco-Logical OMNI-50HP1-1A) costs $202 a year while the most power-hungry (Smart Solar SSG2-ES 120) costs $515 — a spread of $314 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.

Maine
$358
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 Maine rates

Price any model at Maine rates

Your rate, your numbers

Per day
98¢
Per month
$29.84
Per year
$358

1,210 kWh/yr × 29.6¢/kWh = $358/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 Maine?
About $358 a year for the median ENERGY STAR certified electric water heater, at Maine's average residential rate of 29.6¢/kWh — that's $29.84 a month.
Is electricity expensive in Maine?
Maine's residential average of 29.6¢/kWh is 61% above the U.S. average of 18.3¢/kWh, ranking 48 of 51 jurisdictions (1 = cheapest).
What's the cheapest electric water heater to run in Maine?
Among currently certified models, the Eco-Logical OMNI-50HP1-1A costs the least at about $202 a year at Maine rates (681 kWh/yr).
How does Maine 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). Maine sits at $358.

Keep digging

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