How much does an electric baseboard heater cost per month in Idaho?

About $15.45 a month, assuming 1,500 W at a 50% duty cycle, 12 hours a day, 150 days a year at 13.73¢/kWh.

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

Roughly 1,350 kWh a year under these assumptions, or 0.75 kWh for every hour it runs.

Is that expensive compared with other states?

Idaho has the 6th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $247 a year.

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Cost to run an electric baseboard heater in Idaho (July 2026 rates)

At 13.73¢ per kilowatt-hour — Idaho's average residential price in July 2026 — running an electric baseboard heater costs $185 a year. That is 25% less than the national average of $247. Idaho's residential rate is up 11.8% from July 2025, which moves this appliance from $166 to $185 a year.

Per hour: 10.3¢
Per day of use: $1.24
Per month: $15.45
Per year: $185

Assumption: 1,500 W at a 50% duty cycle, 12 hours a day, 150 days a year — 1,350 kWh a year. Per 6-foot section. A whole house typically has several running at once, so multiply by the number of sections in use. Use the calculator to swap in the numbers from your own model.

How Idaho compares

Idaho pays 13.73¢/kWh, the 6th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $61.83 less a year than the typical U.S. household pays for the same use. Running the same electric baseboard heater costs $172 a year in Louisiana and $648 in Hawaii, so where you live changes this bill by $476 a year.

State	Rate	Per month	Per year
North Dakota	13.41¢	$15.09	$181
Tennessee	13.71¢	$15.42	$185
Idaho	13.73¢	$15.45	$185
Nebraska	13.78¢	$15.50	$186
Kentucky	13.81¢	$15.54	$186

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

What else costs about the same in Idaho

Pool pump$237 a year in ID Garage refrigerator$124 a year in ID Space heater$119 a year in ID

Cutting the number down

Resistance heat is 1 kWh in, 1 kWh of heat out. There is no efficiency upgrade available; the only lever is running fewer of them, less often.
Furniture pushed against a baseboard blocks convection and makes the thermostat run the element longer.
Zoning by room is the built-in advantage. Turning unused rooms down to 55 F is where the savings live.

Questions

How much does an electric baseboard heater cost per month in Idaho?: About $15.45 a month, assuming 1,500 W at a 50% duty cycle, 12 hours a day, 150 days a year at 13.73¢/kWh.
How many kilowatt-hours does an electric baseboard heater use?: Roughly 1,350 kWh a year under these assumptions, or 0.75 kWh for every hour it runs.
Is that expensive compared with other states?: Idaho has the 6th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $247 a year.