Neuhoff, Karsten; Amecke, Hermann; Stelmakh, Kateryna; … - 2001
80% by 2050 and to increase the thermal retrofit rate from 0.8% to 2% per year. The 2% target is less than the 3%1 rate … buildings that are already planning a renovation. If a 2% retrofit rate were achieved, most German buildings would have thermal … thermal retrofit has to be "deep"; that is, it must reduce the energy requirement by around 80%. This paper addresses three …