What Does It Cost to Run a Dishwasher in Washington?

This page estimates the energy-only cost to run a dishwasher in Washington using a standard dishwasher, an average load of 1,500 watts, and a typical runtime of 1 hours/day.

Average wattage assumption
1,500 W
Typical usage assumption
1 hours/day
Estimated monthly electricity use
45.0 kWh
Estimated monthly cost
$5.79
Estimated yearly cost
$70.41

Key metrics

MetricValue
Average wattage assumption1,500 W
Typical usage assumption1 hours/day
Estimated monthly electricity use45.0 kWh
Estimated monthly cost$5.79
Estimated yearly cost$70.41

Dishwasher cost vs U.S. average

Washington average rate
12.86 ¢/kWh
Washington monthly cost
$5.79
U.S. monthly cost
$7.91
Monthly difference
-$2.12

At the statewide average residential rate, running a dishwasher in Washington costs less per month by $2.12 than the same usage pattern priced at the current U.S. average electricity rate.

How much electricity does a dishwasher use?

This estimate uses a typical wattage range of 1,200-1,800 W and a modeling assumption of 1,500 watts for 1 hours/day. Using the formula kWh = (watts × hours) / 1000, that works out to 1.50 kWh per day, 45.0 kWh per 30-day month, and 547.5 kWh per year.

Dishwasher energy use depends on cycle length and whether the unit heats water internally. In Washington, that energy is priced using the statewide residential average of 12.86 ¢/kWh, with a national benchmark of 17.57 ¢/kWh for comparison.

Dishwasher operating cost estimate in Washington

Time periodEnergy useCost
Per hour1.50 kWh$0.19
Per day1.50 kWh$0.19
Per month45.0 kWh$5.79
Per year547.5 kWh$70.41

These estimates isolate electricity usage only. Real utility bills can be higher because delivery charges, taxes, seasonal pricing, and fixed monthly fees are not included in this appliance model.

What changes the cost the most?

The biggest cost drivers for a dishwasher are the local electricity rate and real-world usage intensity. For this appliance, the main swing factors are heated dry setting, eco mode, number of cycles per week.

If your usage is lighter or heavier than the assumption on this page, the linked state calculator and usage-cost pages below are the fastest way to model a custom scenario with the same state electricity rate.

For calculator-focused intent, use the Dishwasher calculator in Washington to compare light, typical, and heavy usage profiles.

Comparison discovery pathways

Use the curated Energy Comparison Hub to move between appliance, state, and usage comparison routes without changing canonical ownership for appliance cost intent.

Rollout-enabled city context in Washington

These city pages provide supplemental local context for this same appliance usage profile. City values are deterministic estimates and remain secondary to the canonical appliance-state route.

CityCity rateMonthly estimateYearly estimateCity route
Seattle11.50 ¢/kWh$5.17$62.10City electricity context

City pages are authority/context routes and not appliance-by-city canonical pages. Appliance cost intent remains canonical at this state-level route.

Related appliance cost pages for Washington

State cost and bill pathways for Washington

Historical and trend pages

Fixed-usage and calculator pathways

Appliance and estimator pathways

State comparison pathways for Washington

Discovery and navigation hubs

Consumer electricity drivers

Source & Method

Source: U.S. Energy Information Administration (EIA) Retail Sales of Electricity. Last dataset period: February 2026. Costs are energy-only estimates and exclude delivery charges, taxes, and fixed utility fees.

Disclaimers