Zum 1. November 2020 hat das Gebäudeenergiegesetz (GEG) das bisherige Energieeinsparungsgesetz (EnEG), die bisherige Energieeinsparverordnung (EnEV) und das bisherige Erneuerbare-Energien-Wärmegesetz (EEWärmeG) abgelöst. Aus diesem Grund wird das Bundesinstitut für Bau-, Stadt- und Raumforschung das Infoportal Energieeinsparung in Kürze an den neuen Rechtsstand anpassen. Die Arbeiten dazu laufen mit Hochdruck. Der neue auf das GEG umgestaltete Internetauftritt wird innerhalb der nächsten Wochen zur Verfügung stehen.

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Energy Saving Ordinance and Renewable Energies Heat Act

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New buildings under the scope of the Energy Saving Ordinance also have to comply with requirements given by the Renewable Energies Heat Act ("Gesetz zur Förderung erneuerbarer Energien im Wärmebereich (Erneuerbare-Energien-Wärmegesetz - EEWärmeG)") since 1 January 2009. This also applies to certain measures concerning existing buildings owned and occupied by public entities. This results in numerous reciprocal effects concerning the calculations and the proof of compliance. In particular, the partial use of renewable energies demanded by the Renewable Energies Heat Act can have a major impact on the primary energy demand according to the Energy Saving Ordinance.

The Federal Ministry of Economic Affairs and Energy - generally in charge of the law - provides documents and information on a separate website (German language only):


Here are also provided:

Notes on application and frequently asked questions

The Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR) developed for the application of the EnEV in coaction with the Renewable Energies Heat Act a

Manual for owners and planners [Download (German language only)].

The technical content of the manual does not apply to projects, if the application for a building permit dates later than 31st December 2015. Despite this, a look into the manual may be worthwhile because of methodical reasons.

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