How much does a laptop cost per month in Hawaii?

About $4.72 a month, assuming 60 W, 8 hours a day, 250 days a year at 47.18¢/kWh.

How many kilowatt-hours does a laptop use?

Roughly 120 kWh a year under these assumptions, or 0.06 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 $21.79 a year.

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Cost to run a laptop in Hawaii (August 2026 rates)

At 47.18¢ per kilowatt-hour — Hawaii's average residential price in August 2026 — running a laptop costs $56.62 a year. That is 160% more than the national average of $21.79. Hawaii's residential rate is up 22.5% from August 2025, which moves this appliance from $46.24 to $56.62 a year.

Per hour: 2.8¢
Per day of use: 22.6¢
Per month: $4.72
Per year: $56.62

Assumption: 60 W, 8 hours a day, 250 days a year — 120 kWh a year. Charging and working. Once the battery is full, draw drops toward 20 to 30 W for light work. Use the calculator to swap in the numbers from your own model.

How Hawaii compares

Hawaii pays 47.18¢/kWh, the most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $34.82 more a year than the typical U.S. household pays for the same use. Running the same laptop costs $15.26 a year in Nevada and $56.62 in Hawaii, so where you live changes this bill by $41.35 a year.

State	Rate	Per month	Per year
Alaska	29.41¢	$2.94	$35.29
California	29.75¢	$2.97	$35.70
Massachusetts	30.48¢	$3.05	$36.58
Maine	32.11¢	$3.21	$38.53
Hawaii	47.18¢	$4.72	$56.62

States ranked by average residential price, cheapest first. See all 51 states for a laptop.

What else costs about the same in Hawaii

Air fryer$59.45 a year in HI Box fan$53.08 a year in HI Washing machine$61.33 a year in HI

Cutting the number down

A laptop typically uses a fifth to a tenth of what a comparable desktop does for ordinary work.
The charger left plugged in with no laptop attached draws almost nothing on modern units.

Questions

How much does a laptop cost per month in Hawaii?: About $4.72 a month, assuming 60 W, 8 hours a day, 250 days a year at 47.18¢/kWh.
How many kilowatt-hours does a laptop use?: Roughly 120 kWh a year under these assumptions, or 0.06 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 $21.79 a year.