How Much Does a Dishwasher Cost to Run?
A dishwasher costs approximately $86/year to run at $0.16/kWh. That is $7.20/month or $0.288/hour.
💰 Dishwasher Running Cost Calculator
Based on 1800W rated power. Actual varies by model and usage.
Dishwasher Cost at Different Rates
| Rate | Monthly | Annual |
|---|---|---|
| $0.08 | $3.58 | $43 |
| $0.10 | $4.50 | $54 |
| $0.12 | $5.42 | $65 |
| $0.16 | $7.17 | $86 |
| $0.20 | $9.00 | $108 |
| $0.25 | $11.25 | $135 |
| $0.30 | $13.50 | $162 |
| $0.35 | $15.75 | $189 |
Electricity cost to run a Dishwasher
A typical Dishwasher draws 1,800 watts when running and operates roughly 1 hour per day on average. That works out to 1.80 kWh per day, 45 kWh per month, and approximately 540 kWh per year.
At the US-average residential rate of 16.4 cents per kWh (EIA April 2026), the Dishwasher costs roughly $86 per year to operate. In cheap-power states like Idaho or Washington at 11 cents, it is closer to $65. In expensive states like California or Massachusetts at 30 cents, it climbs to $135. In Hawaii at 41 cents per kWh, the annual cost is approximately $222.
Annual cost by state rate
| Rate scenario | Rate (c/kWh) | Annual kWh | Annual cost |
|---|---|---|---|
| Idaho, Washington (cheapest) | 11.0 | 540 | $59 |
| Texas, Florida | 14.0 | 540 | $76 |
| US national average | 16.4 | 540 | $86 |
| New York, Connecticut | 25.0 | 540 | $135 |
| California, Massachusetts | 30.0 | 540 | $162 |
| Hawaii (most expensive) | 41.2 | 540 | $222 |
EnergyStar vs standard model
An EnergyStar-rated Dishwasher typically uses about 12 percent less energy than a standard model. That translates to roughly 475 kWh per year instead of 540, saving $10 per year at US-average rates. Over a typical 10-year service life, that is around $100 in saved electricity, which usually outpaces the upfront price premium for the efficient model.
Frequently asked questions
How much electricity does a Dishwasher use?
A typical Dishwasher uses about 1.80 kWh per day running 1 hour at 1,800W. That works out to roughly 45 kWh per month and 540 kWh per year. Your actual use will vary with how often you run it.
How much does it cost to run a Dishwasher per month?
At US-average electricity rates (16.4 cents/kWh), running the Dishwasher costs about $7.38 per month. In low-rate states it can be as little as $4.95; in high-rate states like California, expect closer to $13.50 per month.
What is the annual cost of running a Dishwasher?
Annual operating cost at US-average rates: approximately $86 per year. The range across US states is roughly $54 (cheapest) to $222 (Hawaii). An EnergyStar model saves about $10 per year compared to a standard model.
How can I reduce the cost of my Dishwasher?
Upgrade to an EnergyStar-rated model, savings of about 12 percent (around $10/year). Check whether your utility offers a time-of-use plan that aligns with this appliance use pattern.
What watt rating should I expect for a Dishwasher?
Typical running wattage for a Dishwasher is around 1,800 watts. Specific models vary; check the nameplate label on your unit for exact figures. Common variation is plus-or-minus 20 percent of the typical value.
Dishwasher Energy Usage Explained
A dishwasher consumes 1800W. At 1 hours/day for 300 days/year, that is 540 kWh annually, about 5.1% of average US household usage (10,500 kWh).
How to Calculate Running Cost
Cost = (Watts ÷ 1000) × Hours × Rate
For your dishwasher: (1800W ÷ 1000) × 1 hrs × $0.16/kWh = $0.29/day.
Tips to Reduce Costs
Use time-of-use electricity plans for off-peak rates ($0.05–$0.10/kWh overnight). Upgrade to Energy Star certified models. Use smart plugs or timers. Check rates in your state with our Electricity Cost Calculator.
Disclaimer: Estimates based on rated wattage. Actual consumption varies by model, age, and usage patterns.