Retrofitted Buildings Go Solar Active!
Abstract
In future the key focus must lie on the development of renovation-concepts in order to improve the energy-efficiency of the building-stock and on increasing the use of renewable energy sources in their operations. There are actually a lot of “best-practice” projects with building integrated collectors, especially for newly constructed buildings, but the implementation of pre-fabricated large-scaled modules with integrated collectors during renovation is still in an early stage of development. In future a considerable increase of the renovation-rate (from 1-1.5% up to at least 3%) needs to be realized, with „best-practice” projects emphasizing their advantages.