Buildings and facilities rely on mechanical and electrical systems to operate fixtures, equipment, and controls; deliver a thermally comfortable space; and maintain a high level of indoor environmental quality for occupants. Building operations consume approximately 40% of the energy and 74% of the electricity produced annually in the United States, according to the U.S. Department of Energy. Reducing energy use in federal buildings is required by the Energy Independence and Security Act of 2007 and other laws. It also saves money for the taxpayer, and can reduce air pollution, depending on the source of energy.
Net zero energy
Net zero energy means consuming no more energy than is produced from clean, on-site sources. Achieving a net zero energy building requires reducing energy use, increasing energy efficiency‚ and replacing purchased energy with energy generated from on-site sources. For additional guidance on reducing energy consumption, see:
For more information, see DOE Federal Energy Management Program Federal New Buildings Handbook for Net Zero Energy, Water, and Waste.