In 1992 the EU made energy labelling mandatory for most household appliances. Informing consumers through labelling has traditionally been regarded as a valuable way to increase attention to the environmental impact of consumption and reducing resource use, and to promote the purchase of energy-efficient appliances. There are however, some conditions that have to be met before the label functions optimal in all European markets: the consumers must have knowledge of the labelling scheme, the consumers should trust the labelling scheme: that it is relevant and impartial and that the producers do not make
unwanted adoptions to meet the labelling criteria. One other dimension is the potential to limit use of appliances (e.g., turn of lighting, shower less).