A single dishwasher cycle costs roughly 17 to 45 cents in electricity, water, and detergent combined. The exact number depends on your machine’s age, the cycle you choose, and your local utility rates, but most households land somewhere in that range. Here’s how each piece of that cost breaks down.
Electricity: The Biggest Slice
A standard dishwasher uses between 1 and 2.17 kWh of electricity per normal cycle, not counting the energy your water heater uses to supply hot water. An eco or energy-saver cycle drops that dramatically, to around 0.5 kWh per load.
At the current U.S. average residential electricity rate of about 16 cents per kWh (based on 2024 data from the Energy Information Administration), a normal cycle costs 16 to 35 cents in electricity alone. An eco cycle costs closer to 8 cents. If you live in a state with higher rates, like California or Connecticut where prices can exceed 25 cents per kWh, those numbers climb accordingly.
The heated dry setting adds to your electricity bill as well. It uses a heating element and fan to evaporate moisture from your dishes, drawing extra power that air drying or the “waste heat” setting avoids entirely. If your dishwasher has an air-dry or waste-heat option, using it is the simplest way to shave a few cents off every load.
Water: Surprisingly Cheap
Modern Energy Star dishwashers use 3.5 gallons of water or less per cycle. The most efficient models certified in 2024 cap out at 3.2 gallons. Older machines from the early 2000s or before can use 10 to 15 gallons per load.
Residential water typically costs around $5 per 1,000 gallons, though rates vary by city. At that price, 3.5 gallons costs less than 2 cents. Even an older machine running at 15 gallons per cycle only adds about 7 or 8 cents in water costs. Water is the smallest contributor to your per-cycle bill by a wide margin.
Detergent and Rinse Aid
Detergent costs vary more than most people expect. Consumer Reports testing found prices ranging from 7 cents to 57 cents per load depending on the brand and format. Single-use pods tend to land near the higher end, around 25 to 50 cents each. Powder and liquid detergents measured by hand are usually cheaper per load, often under 15 cents.
Rinse aid adds a few more cents if you use it. A bottle typically lasts dozens of cycles, working out to roughly 2 to 5 cents per load. If you live in a hard water area and add dishwasher salt, that’s another minor cost, generally a few cents per cycle depending on how often you refill.
Total Cost Per Cycle
Putting it all together for a modern Energy Star dishwasher on a normal cycle:
- Electricity: 16 to 35 cents
- Water: 1 to 2 cents
- Detergent: 7 to 50 cents
- Rinse aid (optional): 2 to 5 cents
A typical load falls between 25 and 45 cents total if you use mid-priced pods, or as low as 17 to 25 cents with budget powder detergent and an eco cycle. Over a year, running your dishwasher once a day works out to roughly $90 to $165.
An older, less efficient machine pushes costs higher. More water, more electricity per cycle, and no eco mode can easily add 10 to 20 cents per load.
Eco Mode vs. Normal Cycle
The eco or energy-saver setting on most dishwashers uses lower water temperatures and less electricity, dropping energy consumption from around 1.5 kWh down to about 0.5 kWh. That cuts electricity costs by roughly two-thirds. The tradeoff is a longer cycle, often 2 to 3 hours instead of 1 to 1.5 hours. Cleaning performance is comparable for everyday loads, though heavily soiled pots and baked-on food may need a normal or heavy cycle.
How Dishwashers Compare to Hand Washing
Running a dishwasher is almost always cheaper than washing the same number of dishes by hand. Research comparing the two methods found that machine dishwashing uses less than half the water and produces less than half the greenhouse gas emissions of typical hand washing. Most of the cost difference comes from water heating: hand washing under a running tap burns through hot water far faster than a dishwasher does.
There is one exception. A careful two-basin method, where you soak dishes in one sink of soapy water and rinse in a second sink of cold water without ever turning on the tap, can match or beat a dishwasher’s efficiency. But it requires discipline. The moment you reach for the faucet to rinse under running water, the advantage disappears.
Simple Ways to Lower Your Cost Per Load
The easiest savings come from running full loads. A half-empty dishwasher uses the same electricity and water as a full one, so every empty slot is wasted money. Beyond that, switching to the eco cycle for everyday dishes, skipping the heated dry setting, and choosing a budget detergent can collectively cut your per-cycle cost nearly in half. If your dishwasher is 10 or more years old, upgrading to a current Energy Star model will reduce water use by up to 75% and electricity consumption significantly, paying back a meaningful portion of the purchase price over its lifespan.