Building energy use
Buildings and facilities rely on mechanical and electrical systems to operate fixtures, equipment, and controls; deliver a thermally
Warehouse and storage buildings used 528 trillion British thermal units (TBtu) of energy in 2018. Although warehouse and storage buildings accounted for 18% of total commercial floorspace, these buildings accounted for 8% of energy consumption in commercial buildings.
In 2018, the United States had about 5.9 million commercial buildings, totaling about 96.4 billion square feet of floorspace. Energy consumption in these buildings was about 6.8 quadrillion British thermal units (quads). Major fuels consumed within commercial buildings accounted for about 72% of commercial sector end-use energy consumption.
Energy consumption in this type of building occurs mainly in heating, ventilation, air conditioning and lighting systems. The studies have referred to office buildings in general, although in some cases they have been limited to government buildings.
In terms of principal building activities, warehouse and storage buildings, followed by office buildings, were the most numerous commercial buildings, and they had the most floorspace square footage. Office buildings, however, consumed more energy than any other type of commercial building.
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