This document specifies:
—    a structured list of control, building automation and technical building management functions which contribute to the energy performance of buildings functions have been categorized and structured according to building disciplines and building automation and control (BAC)
—    a method to define minimum requirements or any specification regarding the control, building automation and technical building management functions contributing to energy efficiency of a building to be implemented in building of different complexities
—    a factor-based method to get a first estimation of the effect of these functions on typical buildings types and use profiles
—    detailed methods to assess the effect of these functions on a given building.