How much does a computer monitor cost per month in Hawaii?

About $2.64 a month, assuming 30 W, 8 hours a day, 250 days a year at 52.72¢/kWh.

How many kilowatt-hours does a computer monitor use?

Roughly 60 kWh a year under these assumptions, or 0.03 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 $11.00 a year.

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Cost to run a computer monitor in Hawaii (June 2026 rates)

At 52.72¢ per kilowatt-hour — Hawaii's average residential price in June 2026 — running a computer monitor costs $31.63 a year. That is 187% more than the national average of $11.00. Hawaii's residential rate is up 28.7% from June 2025, which moves this appliance from $24.58 to $31.63 a year.

Per hour: 1.6¢
Per day of use: 12.7¢
Per month: $2.64
Per year: $31.63

Assumption: 30 W, 8 hours a day, 250 days a year — 60 kWh a year. A 27-inch IPS panel at moderate brightness. Larger, brighter or HDR panels run two to three times this. Use the calculator to swap in the numbers from your own model.

How Hawaii compares

Hawaii pays 52.72¢/kWh, the most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $20.63 more a year than the typical U.S. household pays for the same use. Running the same computer monitor costs $7.87 a year in Nevada and $31.63 in Hawaii, so where you live changes this bill by $23.77 a year.

State	Rate	Per month	Per year
New York	29.49¢	$1.47	$17.69
Maine	29.59¢	$1.48	$17.75
Massachusetts	29.61¢	$1.48	$17.77
California	34.74¢	$1.74	$20.84
Hawaii	52.72¢	$2.64	$31.63

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

What else costs about the same in Hawaii

3d printer$34.16 a year in HI Security camera$23.09 a year in HI Electric pressure cooker$22.14 a year in HI

Cutting the number down

Brightness is the dominant variable. Dropping from 100% to 60% is a real cut in draw and usually more comfortable.

Questions

How much does a computer monitor cost per month in Hawaii?: About $2.64 a month, assuming 30 W, 8 hours a day, 250 days a year at 52.72¢/kWh.
How many kilowatt-hours does a computer monitor use?: Roughly 60 kWh a year under these assumptions, or 0.03 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 $11.00 a year.