ASHRAE 228 Standard Method of Evaluating Zero Net Energy and Zero Net Carbon Building Performance (October 10)
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Standard 228 sets requirements for evaluating whether a building or group of buildings meets a definition of “zero net energy” or whether those buildings meet a definition of “zero net carbon.” It provides a consistent method of expressing qualifications for zero net energy and zero net carbon buildings associated with the design of new buildings and the operation of existing buildings.
https://osr.ashrae.org/default.aspx
