How much does a dishwasher cost per month in Illinois?

About $5.17 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 19.89¢/kWh.

How many kilowatt-hours does a dishwasher use?

Roughly 312 kWh a year under these assumptions.

Is that expensive compared with other states?

Illinois has the 16th 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 Illinois (June 2026 rates)

At 19.89¢ per kilowatt-hour — Illinois's average residential price in June 2026 — running a dishwasher costs $62.06 a year. That is 8% more than the national average of $57.22. Illinois's residential rate is up 8.7% from June 2025, which moves this appliance from $57.06 to $62.06 a year.

Per cycle: 23.9¢
Per day: 17.0¢
Per month: $5.17
Per year: $62.06

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 Illinois compares

Illinois pays 19.89¢/kWh, the 16th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $4.84 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
Delaware	19.29¢	$5.02	$60.18
Wisconsin	19.56¢	$5.09	$61.03
Illinois	19.89¢	$5.17	$62.06
Pennsylvania	21.73¢	$5.65	$67.80
Maryland	21.84¢	$5.68	$68.14

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

What else costs about the same in Illinois

Chest freezer$59.67 a year in IL Electric oven$66.19 a year in IL Refrigerator$79.56 a year in IL

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 Illinois?: About $5.17 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 19.89¢/kWh.
How many kilowatt-hours does a dishwasher use?: Roughly 312 kWh a year under these assumptions.
Is that expensive compared with other states?: Illinois has the 16th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $57.22 a year.