|| As this is one of the basic needs, saturation of automatic clothes washing appliances is generally high in industrialised countries. At the same time, a high growth rate can be observed in developing and especially in newly industrialising countries. Today, 840 million domestic washing machines are in use worldwide, with an electricity consumption of 94 TWh per year. They cause annual greenhouse gas emissions of 62 million tons of CO2eq and also consume about 19 km3 of water. Although total energy and water consumption by washing machines is still on the increase today, energy and water efficiency could decelerate this trend and limit consumption.