Creative Commons

High energy consumption of the energy sector gi ves the motivation to take efforts in the field of energy saving at International and European level. Energy saving especially in the South Europe countries needs energy because of the high solar radiation. In terms of the legislative sector, the most important role for the reduction and the energy saving plays the Directive 2010/31/EC which set the targets for the net zero energy buildings construction in combination with many environmental benefits. This dissertation carried out research into energy i mprovements in a b uilding by using innovative and old techniqu es so as to improve its envelope. Specifically we have studied the energy situation in a kindergarten in the prefecture of Larissa , which is part of the C climate zone. In this building we have done the energy audit that is defined from KENAK and technical instructions issued through the use of certified software "TEE - KENAK Energy Building Inspection." Moreover, we have studied the energy situation of this building in different cities in Helleni c space, located in separate climatic zones A, B, D so as to compare the differences between them. These cities are R h odos for A climatic zone, Athens for B climatic zone, and finally Florina for D climatic zone. We have taken measures in order for energy improvement which related to the insulation of external building s tructure, changing the glasses and creating solar spaces . To conclude, this dissertation contributes to promote energy interventions in a buildin g, its ener gy needs , as well as its transformation to a more energy - efficient one