How much does an electric blanket cost per month in Hawaii?

About $1.54 a month, assuming 80 W at a 50% duty cycle, 8 hours a day, 120 days a year at 48.00¢/kWh.

How many kilowatt-hours does an electric blanket use?

Roughly 38 kWh a year under these assumptions, or 0.04 kWh for every hour it runs.

Is that expensive compared with other states?

Hawaii has the most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $7.03 a year.

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Cost to run an electric blanket in Hawaii (July 2026 rates)

At 48.00¢ per kilowatt-hour — Hawaii's average residential price in July 2026 — running an electric blanket costs $18.43 a year. That is 162% more than the national average of $7.03. Hawaii's residential rate is up 22.0% from July 2025, which moves this appliance from $15.11 to $18.43 a year.

Per hour: 1.9¢
Per day of use: 15.4¢
Per month: $1.54
Per year: $18.43

Assumption: 80 W at a 50% duty cycle, 8 hours a day, 120 days a year — 38 kWh a year. Queen-size, medium setting, thermostatic. Use the calculator to swap in the numbers from your own model.

How Hawaii compares

Hawaii pays 48.00¢/kWh, the most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $11.40 more a year than the typical U.S. household pays for the same use. Running the same electric blanket costs $4.88 a year in Louisiana and $18.43 in Hawaii, so where you live changes this bill by $13.55 a year.

State	Rate	Per month	Per year
New York	29.90¢	95.7¢	$11.48
Massachusetts	30.49¢	97.6¢	$11.71
Maine	32.41¢	$1.04	$12.45
California	33.61¢	$1.08	$12.91
Hawaii	48.00¢	$1.54	$18.43

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

What else costs about the same in Hawaii

Vacuum cleaner$17.28 a year in HI Electric lawn mower$19.97 a year in HI Toaster$16.82 a year in HI

Cutting the number down

Heating the bed instead of the bedroom is one of the best ratios of comfort to kilowatt-hours in the house.
Preheating for 15 minutes and switching off at bedtime captures most of the benefit for a fraction of the runtime.

Questions

How much does an electric blanket cost per month in Hawaii?: About $1.54 a month, assuming 80 W at a 50% duty cycle, 8 hours a day, 120 days a year at 48.00¢/kWh.
How many kilowatt-hours does an electric blanket use?: Roughly 38 kWh a year under these assumptions, or 0.04 kWh for every hour it runs.
Is that expensive compared with other states?: Hawaii has the most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $7.03 a year.