How much does a dishwasher cost per month in New Hampshire?

About $7.19 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 27.64¢/kWh.

How many kilowatt-hours does a dishwasher use?

Roughly 312 kWh a year under these assumptions.

Is that expensive compared with other states?

New Hampshire has the 8th 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 New Hampshire (August 2026 rates)

At 27.64¢ per kilowatt-hour — New Hampshire's average residential price in August 2026 — running a dishwasher costs $86.24 a year. That is 52% more than the national average of $56.66. New Hampshire's residential rate is up 13.1% from August 2025, which moves this appliance from $76.25 to $86.24 a year.

Per cycle: 33.2¢
Per day: 23.6¢
Per month: $7.19
Per year: $86.24

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 New Hampshire compares

New Hampshire pays 27.64¢/kWh, the 8th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $29.58 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
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
New York	28.65¢	$7.45	$89.39

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

What else costs about the same in New Hampshire

Chest freezer$82.92 a year in NH Electric oven$91.99 a year in NH Refrigerator$111 a year in NH

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 New Hampshire?: About $7.19 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 27.64¢/kWh.
How many kilowatt-hours does a dishwasher use?: Roughly 312 kWh a year under these assumptions.
Is that expensive compared with other states?: New Hampshire has the 8th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $56.66 a year.