ISO 16346:2013 defines the general procedures to assess the energy performance of buildings, including technical building systems, and defines the different types of ratings, and the building boundaries.
The purpose of this International Standard is to
a) collate results from other International Standards that calculate energy use for specific services within a building,
b) account for energy generated in the building, some of which may be exported for use elsewhere,
c) present a summary of the overall energy use of the building in tabular form,
