Many factors contribute to electricity consumption, including climate, building characteristics, and the number and age of the occupants.
Physical factors, such as climate, the size, age, and construction of each house, the number of occupants, and the amount and types of electrical appliances, are fairly straightforward.
InterNACHI’s Home Energy Report™ (see screen shot above) takes into account the age of the people living in the home. Based upon that data, the number of hours that a home is occupied and stage of life cycle (e.g., young singles, young families, families with teenagers, empty-nesters, and retired households) are factored into the home energy calculations, because the age of the occupants is influential in energy usage (Lutzenhiser and Bender 2008 ).
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