How much does a dishwasher cost per month in Louisiana?

About $3.31 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 12.72¢/kWh.

How many kilowatt-hours does a dishwasher use?

Roughly 312 kWh a year under these assumptions.

Is that expensive compared with other states?

Louisiana has the cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $57.13 a year.

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Cost to run a dishwasher in Louisiana (July 2026 rates)

At 12.72¢ per kilowatt-hour — Louisiana's average residential price in July 2026 — running a dishwasher costs $39.69 a year. That is 31% less than the national average of $57.13. Louisiana's residential rate is down 3.0% from July 2025, which moves this appliance from $40.93 to $39.69 a year.

Per cycle: 15.3¢
Per day: 10.9¢
Per month: $3.31
Per year: $39.69

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 Louisiana compares

Louisiana pays 12.72¢/kWh, the cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $17.44 less a year than the typical U.S. household pays for the same use. Running the same dishwasher costs $39.69 a year in Louisiana and $150 in Hawaii, so where you live changes this bill by $110 a year.

State	Rate	Per month	Per year
Louisiana	12.72¢	$3.31	$39.69
Nevada	12.77¢	$3.32	$39.84
Utah	13.12¢	$3.41	$40.93
North Dakota	13.41¢	$3.49	$41.84
Tennessee	13.71¢	$3.56	$42.78

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

What else costs about the same in Louisiana

Chest freezer$38.16 a year in LA Electric oven$42.33 a year in LA Refrigerator$50.88 a year in LA

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 Louisiana?: About $3.31 a month, assuming 1.20 kWh per cycle, 5 cycles a week at 12.72¢/kWh.
How many kilowatt-hours does a dishwasher use?: Roughly 312 kWh a year under these assumptions.
Is that expensive compared with other states?: Louisiana has the cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $57.13 a year.