Weiterentwicklung der Energieeinsparverordnung: Ansätze zur Berücksichtigung der Herstellungs‐, Nutzungs‐ und Instandhaltungsphase von Gebäuden.

Further development of the Energy Saving Ordinance – Approaches for taking into account the manufacturing, use and maintenance phase of buildings The main requirements for the energetic quality of buildings in Germany are defined by the Energy Saving Ordinance (EnEV). In the foreseeable future, it will be replaced by the Building Energy Act (GEG). Both regulations account only for the energy demand resulting from the use phase of a building. The energy expenditure for the manufacture and maintenance of buildings and for the removal and disposal of old building components is not taken into account. In the past, this limitation was justifiable. However, with the development of highly efficient buildings, the energy demand of the use phase is decreasing significantly and a reassessment is necessary. Scientific investigations on the example of a single‐family house and an apartment building, which fulfil the current requirements of the EnEV, have shown that over a period of 50 years the manufacturing and maintenance phase account for 30 % (single‐family house) resp. 38 % (apartment building) of the total primary energy demand, non‐renewable. However, there are no legal requirements yet to be observed for this share. This means that there is significant potential for savings in the building sector beyond the building use phase. In order to activate these potentials, this article presents approaches to consider the manufacturing, use and maintenance phase in the energy assessment of buildings. [ABSTRACT FROM AUTHOR]