The Building Energy Act (GEG) is a German legal regulation that has been in force since November 1, 2020. It combines various previous regulations, including the Energy Saving Ordinance (EnEV), the Renewable Energy Heat Act (EEWärmeG) and the Energy Saving Act (EnEG). The GEG regulates the energy requirements for new and existing buildings as well as the use of renewable energies in the heating sector.
