Kitchen appliances
How Much Electricity Does a Dishwasher Cycle Cost?
Estimate dishwasher electricity per cycle using measured kWh and your tariff. Include cycle settings and keep separate hot-water energy out of a plug reading.
Multiply complete-cycle kWh by your electricity rate. A plug measurement may exclude hot water heated elsewhere. Different programs and drying options can use different energy.
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A dishwasher's electricity cost depends on the program, the load, water conditions, and drying options. The length displayed on the control panel is not enough to calculate its energy use.
Use complete-cycle kWh when available. Then decide whether you want the appliance's electrical cost alone or the broader cost of water and separate water heating.
Find a cycle energy figure
Check the exact model's manual or product energy information. Identify which program the stated kWh refers to. A standard test cycle is not necessarily the quick program you use.
An annual EnergyGuide figure needs its stated cycle assumptions before you convert it into energy per load. The FTC explains standardized labels. Do not divide annual energy by a guessed number of cycles.
If a plug-in measurement is safe and compatible, record a complete cycle. Follow the appliance and meter instructions. The P3 manual describes cumulative energy; its limits apply only to that meter.
Calculate one load and a month
Suppose a hypothetical complete cycle uses 0.9 kWh. At an example $0.20/kWh, its measured appliance electricity costs $0.18.
Twenty such cycles would use 18 kWh and cost $3.60. Forty would cost $7.20 under the same assumptions. These are example cycle figures, not averages for modern dishwashers.
If you compare two programs, use the same tariff and comparable loads. Changing the cycle and the amount of food residue at the same time makes the result harder to interpret.
Keep hot water and water charges separate
Some dishwashers receive hot water from the home's water heater. A plug-in meter does not capture electricity or gas used by that separate heater.
That means the measured appliance kWh may not be the complete energy cost of washing the dishes. Keep external water-heating energy, water supply, and wastewater charges separate unless you have reliable data for them.
Avoid comparing a plug-only dishwasher cost with a hand-washing estimate that includes all hot-water energy. The boundaries must match for a fair comparison.
Choose useful operating changes
ENERGY STAR dishwasher guidance recommends full loads and scraping rather than routine pre-rinsing. Follow the manual for heavily stuck food and suitable programs.
Do not overload the racks. If dishes need a second wash, the first low-energy cycle did not deliver the intended result. A useful comparison includes cleaning performance and total cycles required.
Consider the drying option too. A heated-dry selection may change cycle energy. Record it with the program name instead of reporting one cost for every setting.
Measure and record a fair comparison
- Record the model, program, and drying choice.
- Use comparable full loads and normal water conditions.
- Record complete-cycle kWh or the relevant label figure.
- State whether separate water heating is excluded.
- Apply the actual tariff for the cycle's operating hours.
The electricity calculator's cycle mode converts kWh per cycle into a period estimate. For off-peak use, check your actual plan. A nighttime start does not reduce electricity price on a flat-rate tariff.
Sources
Source pages checked during research on 7 October 2026. Examples are Handy Daily calculations unless stated otherwise.