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

About $6.75 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 25.98¢/kWh.

How many kilowatt-hours does a dishwasher use?

Roughly 312 kWh a year under these assumptions.

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 $56.66 a year.

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Cost to run a dishwasher in District of Columbia (August 2026 rates)

At 25.98¢ per kilowatt-hour — District of Columbia's average residential price in August 2026 — running a dishwasher costs $81.06 a year. That is 43% more than the national average of $56.66. District of Columbia's residential rate is up 12.1% from August 2025, which moves this appliance from $72.32 to $81.06 a year.

Per cycle: 31.2¢
Per day: 22.2¢
Per month: $6.75
Per year: $81.06

Assumption: 1.20 kWh per cycle, 5 cycles a week — 312 kWh a year. Includes the machine's own water heating. Heated dry adds roughly 0.4 kWh to each cycle 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 25.98¢/kWh, the 9th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $24.40 more a year than the typical U.S. household pays for the same use. Running the same dishwasher costs $39.69 a year in Nevada and $147 in Hawaii, so where you live changes this bill by $108 a year.

State	Rate	Per month	Per year
Connecticut	24.51¢	$6.37	$76.47
New Jersey	24.61¢	$6.40	$76.78
District of Columbia	25.98¢	$6.75	$81.06
New Hampshire	27.64¢	$7.19	$86.24
Rhode Island	28.18¢	$7.33	$87.92

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

What else costs about the same in District of Columbia

Chest freezer$77.94 a year in DC Electric oven$86.46 a year in DC Refrigerator$104 a year in DC

Cutting the number down

Skipping heated dry and cracking the door open is the largest single saving available on a dishwasher, and it costs nothing.
A full load uses the same energy as a half load, so waiting until it is full halves the per-dish cost.
Pre-rinsing under a hot tap usually spends more energy heating water than the machine would have used.

Questions

How much does a dishwasher cost per month in District of Columbia?: About $6.75 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 25.98¢/kWh.
How many kilowatt-hours does a dishwasher use?: Roughly 312 kWh a year under these assumptions.
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 $56.66 a year.