How much does a 3D printer cost per month in Washington?

About 80.5¢ a month, assuming 120 W at a 60% duty cycle, 6 hours a day, 150 days a year at 14.91¢/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?

Washington has the 13th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $11.88 a year.

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Cost to run a 3D printer in Washington (June 2026 rates)

At 14.91¢ per kilowatt-hour — Washington's average residential price in June 2026 — running a 3D printer costs $9.66 a year. That is 19% less than the national average of $11.88. Washington's residential rate is up 15.0% from June 2025, which moves this appliance from $8.40 to $9.66 a year.

Per hour: 1.1¢
Per day of use: 6.4¢
Per month: 80.5¢
Per year: $9.66

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 Washington compares

Washington pays 14.91¢/kWh, the 13th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $2.22 less a year than the typical U.S. household pays for the same use. Running the same 3D printer costs $8.50 a year in Nevada and $34.16 in Hawaii, so where you live changes this bill by $25.67 a year.

State	Rate	Per month	Per year
North Carolina	14.74¢	79.6¢	$9.55
Mississippi	14.88¢	80.4¢	$9.64
Washington	14.91¢	80.5¢	$9.66
New Mexico	15.06¢	81.3¢	$9.76
Florida	15.10¢	81.5¢	$9.78

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

What else costs about the same in Washington

Computer monitor$8.95 a year in WA Security camera$6.53 a year in WA Ceiling fan$12.88 a year in WA

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 Washington?: About 80.5¢ a month, assuming 120 W at a 60% duty cycle, 6 hours a day, 150 days a year at 14.91¢/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?: Washington has the 13th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $11.88 a year.