As a participant in the Virginia Municipal League’s
Green Government Challenge, a friendly competition to encourage local
governments and their communities to reduce carbon emissions,
the City of Richmond is working to improve the efficiency of
its facilities by measuring and benchmarking their energy use. A building’s
energy use can be categorized in two ways. Site energy is the amount of
total energy a building uses on-site, as reported on utility (electric and
natural gas) bills. Source energy accounts for a building’s total energy
use and includes losses that take place during the generation, transmission, and distribution of the energy to
the building.
Energy use intensity (EUI) is calculated by dividing a
building’s site or source energy by its gross floor area. Calculating EUI
allows for a comparison of the energy use between buildings based on size,
type, or other characteristics. Generally, a building with low EUI
indicates efficient operation. See this list of City of Richmond
buildings over 5,000 sq. ft. and their EUI.
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