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

About $1.52 a month, assuming 30 W, 8 hours a day, 250 days a year at 30.49¢/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?

Massachusetts has the 4th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $10.99 a year.

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Cost to run a computer monitor in Massachusetts (July 2026 rates)

At 30.49¢ per kilowatt-hour — Massachusetts's average residential price in July 2026 — running a computer monitor costs $18.29 a year. That is 67% more than the national average of $10.99. Massachusetts's residential rate is up 1.4% from July 2025, which moves this appliance from $18.04 to $18.29 a year.

Per hour: 0.9¢
Per day of use: 7.3¢
Per month: $1.52
Per year: $18.29

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 Massachusetts compares

Massachusetts pays 30.49¢/kWh, the 4th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $7.31 more a year than the typical U.S. household pays for the same use. Running the same computer monitor costs $7.63 a year in Louisiana and $28.80 in Hawaii, so where you live changes this bill by $21.17 a year.

State	Rate	Per month	Per year
Alaska	28.83¢	$1.44	$17.30
New York	29.90¢	$1.49	$17.94
Massachusetts	30.49¢	$1.52	$18.29
Maine	32.41¢	$1.62	$19.45
California	33.61¢	$1.68	$20.17

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

What else costs about the same in Massachusetts

3d printer$19.76 a year in MA Security camera$13.35 a year in MA Electric pressure cooker$12.81 a year in MA

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 Massachusetts?: About $1.52 a month, assuming 30 W, 8 hours a day, 250 days a year at 30.49¢/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?: Massachusetts has the 4th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $10.99 a year.