Work out washing machine running cost instantly with clear inputs, formula shown and shareable results.
Washing machine cost combines electricity and water, including the sewerage charge which usually matches the supply charge. Nearly all the electricity goes into heating the water, which is why a 30 degree wash costs roughly a third of a 60 degree one.
Washing cost
annual = cycles x 52 x (kWh x tariff + litres/1000 x water and sewerage rate)
Heating water dominates the energy use. Dropping from 60 to 30 degrees cuts energy per cycle by around 60% with modern detergents performing well at low temperature.
Yes, per kilogram of washing. The machine uses only slightly more energy for a full load than a half load, so fewer fuller cycles is cheaper.