How much does a gaming PC cost per month in New Hampshire?

About $12.95 a month, assuming 400 W, 4 hours a day, 365 days a year at 26.60¢/kWh.

How many kilowatt-hours does a gaming PC use?

Roughly 584 kWh a year under these assumptions, or 0.40 kWh for every hour it runs.

Is that expensive compared with other states?

New Hampshire has the 8th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $107 a year.

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Cost to run a gaming PC in New Hampshire (July 2026 rates)

At 26.60¢ per kilowatt-hour — New Hampshire's average residential price in July 2026 — running a gaming PC costs $155 a year. That is 45% more than the national average of $107. New Hampshire's residential rate is up 16.7% from July 2025, which moves this appliance from $133 to $155 a year.

Per hour: 10.6¢
Per day of use: 42.6¢
Per month: $12.95
Per year: $155

Assumption: 400 W, 4 hours a day, 365 days a year — 584 kWh a year. Under load with a mid-to-high-end GPU. Idling at the desktop is closer to 80 W, and the monitor is on top of this. Use the calculator to swap in the numbers from your own model.

How New Hampshire compares

New Hampshire pays 26.60¢/kWh, the 8th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $48.41 more a year than the typical U.S. household pays for the same use. Running the same gaming PC costs $74.28 a year in Louisiana and $280 in Hawaii, so where you live changes this bill by $206 a year.

State	Rate	Per month	Per year
New Jersey	25.19¢	$12.26	$147
District of Columbia	25.21¢	$12.27	$147
New Hampshire	26.60¢	$12.95	$155
Rhode Island	28.29¢	$13.77	$165
Alaska	28.83¢	$14.03	$168

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

What else costs about the same in New Hampshire

Aquarium$157 a year in NH Well pump$146 a year in NH Dehumidifier$144 a year in NH

Cutting the number down

Capping frame rate to the monitor's refresh rate cuts GPU draw substantially with no visible difference.
Sleep rather than idle: a machine left at the desktop overnight can use more in a year than the gaming itself.
Undervolting a modern GPU typically trims power meaningfully at near-identical performance.

Questions

How much does a gaming PC cost per month in New Hampshire?: About $12.95 a month, assuming 400 W, 4 hours a day, 365 days a year at 26.60¢/kWh.
How many kilowatt-hours does a gaming PC use?: Roughly 584 kWh a year under these assumptions, or 0.40 kWh for every hour it runs.
Is that expensive compared with other states?: New Hampshire has the 8th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $107 a year.