How much does a dishwasher cost per month in Connecticut?

About $6.32 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 24.32¢/kWh.

How many kilowatt-hours does a dishwasher use?

Roughly 312 kWh a year under these assumptions.

Is that expensive compared with other states?

Connecticut has the 12th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $57.22 a year.

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Cost to run a dishwasher in Connecticut (June 2026 rates)

At 24.32¢ per kilowatt-hour — Connecticut's average residential price in June 2026 — running a dishwasher costs $75.88 a year. That is 33% more than the national average of $57.22. Connecticut's residential rate is down 10.6% from June 2025, which moves this appliance from $84.83 to $75.88 a year.

Per cycle: 29.2¢
Per day: 20.8¢
Per month: $6.32
Per year: $75.88

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 Connecticut compares

Connecticut pays 24.32¢/kWh, the 12th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $18.66 more a year than the typical U.S. household pays for the same use. Running the same dishwasher costs $40.90 a year in Nevada and $164 in Hawaii, so where you live changes this bill by $124 a year.

State	Rate	Per month	Per year
Maryland	21.84¢	$5.68	$68.14
Michigan	22.99¢	$5.98	$71.73
Connecticut	24.32¢	$6.32	$75.88
District of Columbia	24.39¢	$6.34	$76.10
Vermont	24.44¢	$6.35	$76.25

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

What else costs about the same in Connecticut

Chest freezer$72.96 a year in CT Electric oven$80.94 a year in CT Refrigerator$97.28 a year in CT

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 Connecticut?: About $6.32 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 24.32¢/kWh.
How many kilowatt-hours does a dishwasher use?: Roughly 312 kWh a year under these assumptions.
Is that expensive compared with other states?: Connecticut has the 12th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $57.22 a year.