How much does a gaming PC cost per month in North Carolina?

About $7.17 a month, assuming 400 W, 4 hours a day, 365 days a year at 14.74¢/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?

North Carolina has the 11th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $107 a year.

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Cost to run a gaming PC in North Carolina (June 2026 rates)

At 14.74¢ per kilowatt-hour — North Carolina's average residential price in June 2026 — running a gaming PC costs $86.08 a year. That is 20% less than the national average of $107. North Carolina's residential rate is up 10.2% from June 2025, which moves this appliance from $78.14 to $86.08 a year.

Per hour: 5.9¢
Per day of use: 23.6¢
Per month: $7.17
Per year: $86.08

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 North Carolina compares

North Carolina pays 14.74¢/kWh, the 11th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $21.02 less a year than the typical U.S. household pays for the same use. Running the same gaming PC costs $76.56 a year in Nevada and $308 in Hawaii, so where you live changes this bill by $231 a year.

State	Rate	Per month	Per year
Oklahoma	14.33¢	$6.97	$83.69
Idaho	14.37¢	$6.99	$83.92
North Carolina	14.74¢	$7.17	$86.08
Mississippi	14.88¢	$7.24	$86.90
Washington	14.91¢	$7.26	$87.07

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

What else costs about the same in North Carolina

Aquarium$87.16 a year in NC Well pump$80.70 a year in NC Dehumidifier$79.60 a year in NC

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 North Carolina?: About $7.17 a month, assuming 400 W, 4 hours a day, 365 days a year at 14.74¢/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?: North Carolina has the 11th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $107 a year.