How much does a 3D printer cost per month in District of Columbia?

About $1.36 a month, assuming 120 W at a 60% duty cycle, 6 hours a day, 150 days a year at 25.21¢/kWh.

How many kilowatt-hours does a 3D printer use?

Roughly 65 kWh a year under these assumptions, or 0.07 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 $11.86 a year.

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Cost to run a 3D printer 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 3D printer costs $16.34 a year. That is 38% more than the national average of $11.86. District of Columbia's residential rate is up 9.4% from July 2025, which moves this appliance from $14.93 to $16.34 a year.

Per hour: 1.8¢
Per day of use: 10.9¢
Per month: $1.36
Per year: $16.34

Assumption: 120 W at a 60% duty cycle, 6 hours a day, 150 days a year — 65 kWh a year. A consumer FDM printer mid-print. The heated bed dominates the draw, and an enclosure lowers the duty cycle by holding heat in. 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 $4.47 more a year than the typical U.S. household pays for the same use. Running the same 3D printer costs $8.24 a year in Louisiana and $31.10 in Hawaii, so where you live changes this bill by $22.86 a year.

State	Rate	Per month	Per year
Connecticut	24.16¢	$1.30	$15.66
New Jersey	25.19¢	$1.36	$16.32
District of Columbia	25.21¢	$1.36	$16.34
New Hampshire	26.60¢	$1.44	$17.24
Rhode Island	28.29¢	$1.53	$18.33

States ranked by average residential price, cheapest first. See all 51 states for a 3D printer.

What else costs about the same in District of Columbia

Computer monitor$15.13 a year in DC Security camera$11.04 a year in DC Ceiling fan$21.78 a year in DC

Cutting the number down

The heated bed, not the hotend, is the load. Lowering bed temperature after the first layers cuts the average draw.
Long prints are cheap per hour but numerous: a week of continuous printing is a real line item.

Questions

How much does a 3D printer cost per month in District of Columbia?: About $1.36 a month, assuming 120 W at a 60% duty cycle, 6 hours a day, 150 days a year at 25.21¢/kWh.
How many kilowatt-hours does a 3D printer use?: Roughly 65 kWh a year under these assumptions, or 0.07 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 $11.86 a year.