ZEMCH 2015 - International Conference Proceedings | Page 666

current rate and desire of renovation. A single measure, such as insulation of the roof, is considered “a minor renovation”. Implementing one to three of these low cost and easy to implement
measures could provide up to 30% energy savings. On the contrary, the holistic upgrade for all
elements in addition to installation of renewable energy technologies could reach to the optimal
level with more than 90% savings, it is proposed under the name “nea