Convergence Between Cost-Optimality and Nearly Zero-Energy Buildings

Abstract

In according to Directive 2010/31/EU, the concept of Cost-Optimality was setting the energy performance requirements in the MS building codes. Particularly, the Commission established a comparative framework methodology for calculating cost-optimal levels of minimum energy performance for building. The same Directive also introduces the concept of nearly Zero-Energy Buildings (nZEB) stating that all new buildings by the end of 2020 must be nZEB. The cost-optimal methodology helps to understand and manage the implications of implementing requirements for nZEB.