Advances in Business-Related Scientific Research Conference 2012 in Olbia (ABSRC 2012 Olbia) September 5–7, 2012, Olbia, Italy ECONOMIC POTENTIAL OF ENERGY EFFICIENT BUILDINGS RETROFITTING IN SARDINIA Giuseppe Desogus University of Cagliari, Department of Civil and Environmental Engineering and Architecture Italy Lorenza Di Pilla University of Cagliari, Department of Civil and Environmental Engineering and Architecture Italy Salvatore Mura University of Cagliari, Department of Civil and Environmental Engineering and Architecture Italy Gian Luca Pisano University of Cagliari, Department of Civil and Environmental Engineering and Architecture Italy Roberto Ricciu* University of Cagliari, Department of Civil and Environmental Engineering and Architecture Italy labeeunica@gmail.com Abstract The recent European Directive 2010/31/EU highlights how minimum energy performance requirements must be also established and applied for existing buildings. In implementing these minimum requirements, Member States should carry out cost-effectiveness analysis so payback times to be consistent with the current economic outlook. The present contribution aims to analyze the cost-effectiveness of different energy retrofit scenarios for some 50’s building typologies built in Sardinia.