Dishwasher Running Cost UK: Price Per Cycle in 2026

How much does a dishwasher cost to run?

At Ofgem’s Great Britain Direct Debit comparison rate of 26.32p per kWh for 1 October to 31 December 2026, a dishwasher using 0.55 kWh costs about 14p per cycle, one using 0.76 kWh costs about 20p and one using 0.85 kWh costs about 22p. These are worked examples, not claims about every model or programme.

Electricity is only one part of the cost. A dishwasher also uses water and detergent, but those prices vary too widely to include honestly in a single UK figure. For an electricity comparison, use the same eco-programme label basis for each model and multiply by your own pence-per-kWh rate.

• 0.55 kWh cycle: 0.55 × 26.32p = 14.48p, or about 14p.
• 0.76 kWh cycle: 0.76 × 26.32p = 20.00p, or about 20p.
• 0.85 kWh cycle: 0.85 × 26.32p = 22.37p, or about 22p.
• Five 0.76 kWh cycles a week: 3.8 kWh and about £1.00 a week.

Calculate cost from the dishwasher energy label

A current dishwasher label gives eco-programme energy consumption in kWh per 100 cycles. Use: cost per cycle = label kWh ÷ 100 × electricity unit rate. If the label says 76 kWh per 100 cycles, divide 76 by 100 to get 0.76 kWh. Multiply 0.76 by 26.32p to get 20.0032p, which rounds to 20p.

The label also shows rated capacity in place settings, water use per eco cycle, eco-programme duration and noise information. Compare machines with a capacity that suits your household. A low figure for a small machine is not automatically better if you would need to run it twice for the same dishes.

UK ecodesign rules require the eco programme and use it at rated capacity for the standard measurements. That makes the label useful for like-for-like shopping. Your quick, intensive or half-load programme may use a different amount, and a long eco cycle can still use less electricity because duration and energy are not the same thing.

Worked weekly, monthly and annual examples

Suppose the label shows 76 kWh per 100 cycles and the household runs five full loads each week. Each eco cycle uses 0.76 kWh, so five use 3.8 kWh. At 26.32p per kWh, that costs 100.016p, rounded to £1.00 a week.

Across 52 weeks, 260 cycles use 197.6 kWh. Multiplying by £0.2632 gives £52.00832, rounded to £52.01 a year. An average calendar month is about 21.7 cycles at this usage pattern, so electricity costs roughly £4.33 a month.

If your label says 55 kWh per 100 cycles, 260 cycles use 143 kWh and cost £37.64 at the same rate. At 85 kWh per 100 cycles they use 221 kWh and cost £58.17. The difference is £20.53 a year in this example, so consider purchase price, expected lifetime, capacity and repairability as well as energy use.

Why the eco programme usually takes longer

Citizens Advice recommends using the eco or energy-saving setting and notes that it usually takes longer but uses less electricity. A dishwasher can reduce energy by heating the water more gradually or using a lower temperature, then allow more time for soaking and cleaning.

Do not estimate energy by multiplying the programme duration by a single wattage. The heater, pump and drying system do not all draw maximum power for the entire cycle. The label’s kWh figure or a suitable energy monitor gives a more meaningful estimate.

Full load, half load or two cycles?

Run the dishwasher when it is full without blocking the spray arms or crowding items so closely that they cannot be cleaned. Citizens Advice and Energy Saving Trust both recommend full loads and eco modes. One well-loaded cycle generally avoids the electricity, water and detergent needed for an unnecessary second run.

A half-load option does not necessarily halve consumption. Check the manual or product data for your model. If dishes routinely need rewashing, adjust loading, clean the filter and spray arms as instructed, refill salt or rinse aid where required, and choose a programme suitable for the soil level.

Use your own tariff rate

Ofgem’s 26.32p figure is an average comparison rate for a standard variable tariff paid by Direct Debit in England, Scotland and Wales. Actual rates vary by region, payment method, tariff and meter. A fixed tariff is not necessarily priced at the cap.

Northern Ireland has a separate electricity market and Ofgem’s price cap does not apply there. Wherever you live, copy the unit rate from your bill or tariff information. On a time-of-use tariff, a delayed-start eco cycle may cost less if it runs wholly in a cheaper period, but follow the manufacturer’s safety instructions and do not assume every overnight period is off-peak.

Practical ways to reduce dishwasher electricity use

Use the eco programme for normally soiled dishes, wait for a sensible full load and avoid pre-rinsing under hot running water unless the manufacturer says it is necessary. Scrape food into the bin instead. If your machine offers air drying, Citizens Advice says this normally uses less electricity than heated drying.

Keep the filter and spray arms clean according to the manual. Choose the shortest or coolest programme that still cleans the load properly, but remember that “quick” is not automatically the lowest-energy option. Compare the programme table in the manual rather than judging by time alone.

When replacing a dishwasher, compare kWh per 100 eco cycles, water per cycle and capacity for models of a suitable size. The coloured efficiency class is useful, but the consumption figure lets you turn the difference into pounds using your own tariff and expected number of cycles.

Dishwasher versus washing up by hand

There is no honest universal winner for every household. Hand washing can use electricity or gas to heat water, while a dishwasher uses metered electricity, water and detergent. The result depends on how much hot water is used, its heat source, the dishwasher model and whether the machine is filled efficiently.

For a defensible comparison, measure rather than guess. Record the dishwasher’s kWh per cycle and water figure, then compare that with the volume and temperature of water used for an equivalent set of dishes. Avoid treating a single national average as a promise for your kitchen.