Building ecological technology for solar energy use, to ensure connection – and venting as well as summer and winter heat – and sound insulation power of buildings almost appearance a possibility due to construction and design of the facade solely by solar energy along with a comfortable feel and promotional room quality. It is possible summer and winter insulation, soundproofing, Sun and glare, energy-saving loading and venting to implement use of daylight and active and passive solar energy along with a system in the construction of the facade. Energy efficiency during use of buildings, whether in new or renovated buildings includes ecologically basically four themes: a) energy protection i.e. maximum prevention of energy loss, b) i.e. maximum production and use of renewable energies gain energy in the and on the building, c) save energy i.e. minimal energy consumption, d) energy expenditure i.e. minimal energy consumption. The measures for the Power protection deal with the actors in the construction industry for decades and are hardly still unexplored or unknown.
These relate to the technical equipment and other technical users in the building. Gain the energy, geothermal energy and sunlight are the most relevant forms of renewable energy with regard to the use in the individual buildings. Here, the use of solar energy is particularly simple and close lying. Save energy is dependent on user behaviour, but is influenced by the insulation and the design of the building but decisive. The optimal energy sales means the relatively largest work to accomplish this in various forms and in terms of building ecological point of view with renewable energy, so solar energy with the relatively lowest amount of energy. The legal requirements and standards set the insulation standard and to be respected insulation values and also the proportion of use of renewable energy. The partly very voluminous insulation layers of external components are often hard to reconcile with the design of the buildings in appeal and can increasingly present and even tighter measures economically and sustainably considered detrimental.