Zero Energy Building
“An energy-efficient building where, on a source energy basis, the actual annual delivered energy is less than or equal to the on-site renewable exported energy.”
Note: The terms Zero Net Energy (ZNE) and Net Zero Energy (NZE) have the same definition and are used widely. The US Department of Energy determined that for their usage, the term “net” is confusing to some people and is redundant in the name as it is built into the definition.
The National Institute of Building Sciences, prepared for the U.S. Department of Energy. “A Common Definition for Zero Energy Buildings.” September 2015. Visited July 22, 2016. http://energy.gov/sites/prod/files/2015/09/f26/bto_common_definition_zero_energy_buildings_093015.pdf
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