How much does an electric water heater cost per month in Pennsylvania?

About $63.38 a month, assuming 3,500 kWh a year at 21.73¢/kWh.

How many kilowatt-hours does an electric water heater use?

Roughly 3,500 kWh a year under these assumptions.

Is that expensive compared with other states?

Pennsylvania has the 15th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $642 a year.

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Cost to run an electric water heater in Pennsylvania (June 2026 rates)

At 21.73¢ per kilowatt-hour — Pennsylvania's average residential price in June 2026 — running an electric water heater costs $761 a year. That is 18% more than the national average of $642. Pennsylvania's residential rate is up 10.4% from June 2025, which moves this appliance from $689 to $761 a year.

Per day: $2.08
Per month: $63.38
Per year: $761

Assumption: 3,500 kWh a year. A 50-gallon resistance tank for a household of three or four. This is typically the largest or second-largest electric load in a home without electric heat. Use the calculator to swap in the numbers from your own model.

How Pennsylvania compares

Pennsylvania pays 21.73¢/kWh, the 15th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $119 more a year than the typical U.S. household pays for the same use. Running the same electric water heater costs $459 a year in Nevada and $1,845 in Hawaii, so where you live changes this bill by $1,386 a year.

State	Rate	Per month	Per year
Wisconsin	19.56¢	$57.05	$685
Illinois	19.89¢	$58.01	$696
Pennsylvania	21.73¢	$63.38	$761
Maryland	21.84¢	$63.70	$764
Michigan	22.99¢	$67.05	$805

States ranked by average residential price, cheapest first. See all 51 states for an electric water heater.

What else costs about the same in Pennsylvania

Electric car$826 a year in PA Hot tub$543 a year in PA Central air conditioner$511 a year in PA

Cutting the number down

A heat-pump water heater does the same job for roughly a third of the electricity, which is why it usually pays back faster than any other upgrade in the house.
Dropping the setpoint from 140 F to 120 F cuts standby losses and scalding risk at once.
An insulating blanket on an older tank pays for itself in a season; check the manufacturer's guidance first.

Questions

How much does an electric water heater cost per month in Pennsylvania?: About $63.38 a month, assuming 3,500 kWh a year at 21.73¢/kWh.
How many kilowatt-hours does an electric water heater use?: Roughly 3,500 kWh a year under these assumptions.
Is that expensive compared with other states?: Pennsylvania has the 15th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $642 a year.