A big part of Europe's building stock is inefficient in terms of energy use, mainly as a consequence of excessive heat losses through building envelopes and lack of efficiency of the heating, ventilation and air conditioning systems. Very few buildings are undergoing deep renovation, and when it happens it results often more expensive than initially foreseen... Renewable energy production is still often underestimated, even if there is throughout Europe a big availability of renewable energy sources. The project 4RinEU, coordinated by Eurac Research,  is meant to provide an answer to these challenges, providing new tools and strategies to encourage large scale renovation of existing buildings, fostering the use of renewable energies, and providing reliable business models to support their applications.

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