Development of a standard method to compare energy performance in buildings should result in improved energy efficiency. In the past, practitioners have developed their own sense of what constitutes an energy-efficient building based on experience, the types of activities within specific buildings and any history of achieving reductions in energy use in comparable buildings.
"This knowledge has gaps and is not easily transferable because it is based on many years of experience regarding expected patterns of use for a specific building type," Jason Glazer, P.E., said. "Without data to back it up, the knowledge is insufficient since practitioners may arrive at differing assessments of the same building." An evaluation of existing building energy performance rating protocols is being developed by ASHRAE.