How much does a gaming PC cost per month in District of Columbia?

About $12.27 a month, assuming 400 W, 4 hours a day, 365 days a year at 25.21¢/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?

District of Columbia has the 9th 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 District of Columbia (July 2026 rates)

At 25.21¢ per kilowatt-hour — District of Columbia's average residential price in July 2026 — running a gaming PC costs $147 a year. That is 38% more than the national average of $107. District of Columbia's residential rate is up 9.4% from July 2025, which moves this appliance from $135 to $147 a year.

Per hour: 10.1¢
Per day of use: 40.3¢
Per month: $12.27
Per year: $147

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 District of Columbia compares

District of Columbia pays 25.21¢/kWh, the 9th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $40.30 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
Connecticut	24.16¢	$11.76	$141
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

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

What else costs about the same in District of Columbia

Aquarium$149 a year in DC Well pump$138 a year in DC Dehumidifier$136 a year in DC

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 District of Columbia?: About $12.27 a month, assuming 400 W, 4 hours a day, 365 days a year at 25.21¢/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?: District of Columbia has the 9th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $107 a year.