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

About $1.22 a month, assuming 30 W, 8 hours a day, 250 days a year at 24.32¢/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?

Connecticut has the 12th 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 Connecticut (June 2026 rates)

At 24.32¢ per kilowatt-hour — Connecticut's average residential price in June 2026 — running a computer monitor costs $14.59 a year. That is 33% more than the national average of $11.00. Connecticut's residential rate is down 10.6% from June 2025, which moves this appliance from $16.31 to $14.59 a year.

Per hour: 0.7¢
Per day of use: 5.8¢
Per month: $1.22
Per year: $14.59

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 Connecticut compares

Connecticut pays 24.32¢/kWh, the 12th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $3.59 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
Maryland	21.84¢	$1.09	$13.10
Michigan	22.99¢	$1.15	$13.79
Connecticut	24.32¢	$1.22	$14.59
District of Columbia	24.39¢	$1.22	$14.63
Vermont	24.44¢	$1.22	$14.66

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

What else costs about the same in Connecticut

3d printer$15.76 a year in CT Security camera$10.65 a year in CT Electric pressure cooker$10.21 a year in CT

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 Connecticut?: About $1.22 a month, assuming 30 W, 8 hours a day, 250 days a year at 24.32¢/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?: Connecticut has the 12th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $11.00 a year.