We use electric to light our cities and homes, to power machinery in factories, cook our food, play music, and operate televisions. In a home where electricity supplies all of the energy requirements, the average energy consumption is as follows: Air conditioner and heater = 50% Water heater = 20% Lighting and small appliances = 10% Refrigerator = 8% Other = 5% Ovens and stoves = 4% Clothes dryer = 3%