Application of the comparative methodology for the definition of individual building elements energy requirements in Italy

Directive 2010/31/EU establishes that Member States must ensure that minimum energy performance requirements for buildings as well as for individual building elements are set with a view to achieve cost-optimal levels. The comparative methodology is here applied to two reference buildings; different energy efficiency measures are considered one at a time in order to find the optimality in terms of costs/benefits; results are then discussed. The definition of the individual building elements refurbishment cost/benefits effectiveness wants to address building administrations to define suitable energy requirements as well as economic incentives, as to promote the energy consumption reduction according to EU requirements.