The current worldwide energy consumption increase imposes several problems in terms of limited energy resources, supply difficulties and environmental impacts. The common challenge is to reduce energy consumption mitigating at the same time impacts on climate change. In this context, Building Energy Efficiency (BEE) attracts increasingly attention, as building sector consumes on average over than 35% of global energy. Thus, it is not a coincidence that European Union (EU) framework has been interested in this topic promoting different actions to support sustainability in building sector. These actions include the allocation of funds for restructuring and for energy efficiency operations, as well as rules and directives concerning the methods of energy certification and reduction in consumption of natural resources with the common aim of sustainability. The aim of this paper is the study of Economic Campus (EC) of University of Bari Aldo Moro energy requalification presenting both economic (monetary cost reduction) and environmental (energy savings and greenhouse gases reduction) benefits. After having analyzed the role of building sector on global and European energy consumption and its contribution to climate change, an ex-ante analysis and ex-post prevision of the case study proposed will be presented.
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