This standard requires (1) the measurement of energy use for existing buildings and (2) for proposed buildings@ the reporting of only those data that could be measured in an existing building.This standard specifies techniques for measuring and expressing the energy performance of buildings.This standard defines minimum requirements of the database required for use in building energy performance standards.This standard provides a consistent@ uniform method of reporting predicted or measured energy used to determine energy performance.This standard does not establish building energy goals@ limits@ or performance data.This standard does not present a method for certification of prediction methodology@ such as computer programs.