The consumption of electrical appliances per dwelling is mainly determined by two main drivers: on the one hand, the change in the number of appliances owned per households (“equipment ownership”), that contribute to raise that consumption (“activity effect”); on the other hand, the variation in the average annual consumption per appliance (“specific consumption”), that usually contributes to reduce this consumption due to the increased efficiency of appliances (“efficiency effect”). In the last decades, the activity effect has been greater than the efficiency effect, mainly because of the spread of a variety of small appliances resulting in an overall increase in the consumption of electrical appliances per dwelling. For more information see http://www.odyssee-mure.eu/publications/efficiency-by-sector/households/energy-consumption-large-appliances-dwelling.html and http://www.indicators.odyssee-mure.eu/decomposition.html (sector household; sub-sector electrical appliances).
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