How much does a dishwasher cost per month in Hawaii?

About $12.27 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 47.18¢/kWh.

How many kilowatt-hours does a dishwasher use?

Roughly 312 kWh a year under these assumptions.

Is that expensive compared with other states?

Hawaii has the 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 Hawaii (August 2026 rates)

At 47.18¢ per kilowatt-hour — Hawaii's average residential price in August 2026 — running a dishwasher costs $147 a year. That is 160% more than the national average of $56.66. Hawaii's residential rate is up 22.5% from August 2025, which moves this appliance from $120 to $147 a year.

Per cycle: 56.6¢
Per day: 40.3¢
Per month: $12.27
Per year: $147

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 Hawaii compares

Hawaii pays 47.18¢/kWh, the most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $90.54 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
Alaska	29.41¢	$7.65	$91.76
California	29.75¢	$7.73	$92.82
Massachusetts	30.48¢	$7.92	$95.10
Maine	32.11¢	$8.35	$100
Hawaii	47.18¢	$12.27	$147

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

What else costs about the same in Hawaii

Chest freezer$142 a year in HI Electric oven$157 a year in HI Refrigerator$189 a year in HI

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 Hawaii?: About $12.27 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 47.18¢/kWh.
How many kilowatt-hours does a dishwasher use?: Roughly 312 kWh a year under these assumptions.
Is that expensive compared with other states?: Hawaii has the most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $56.66 a year.