Regulatory framework for energy efficiency

The German Buildings Energy Act (Gebäudeenergiegesetz, GEG) introduces mandatory standards for energy-efficient building and refurbishment.

It defines the requirements for a building’s energy efficiency and for the issue and use of the energy performance certificate.

Energy-efficient building and refurbishment the right way


Compulsory regulations are needed to ensure the success of the energy transition. Here, dena advocates a convenient and uniform regulatory framework that does not use compulsion.

The German Buildings Energy Act (Gebäudeenergiegesetz, GEG) is a central instrument within German energy and climate protection policies. Its purpose is to ensure that the targets of the Federal Government’s energy policies are achieved – in particular, a largely climate-neutral inventory of existing buildings by 2045 and around 40 per cent savings in final energy consumption through efficiency measures on the building envelope and construction technology compared with 2020. The ordinance defines structural and heating system standards for buildings and specifies the energy efficiency for new builds and the refurbishment of existing buildings. The GEG came into force on 1 November 2020 and unified the German Energy Saving Act (Energieeinsparungsgesetz, EnEG), the German Energy Saving Ordinance (Energieeinsparverordnung, EnEV) and the German Renewable Energies Heat Act (Erneuerbare-Energien-Wärmegesetz, EEWärmeG).  The effectiveness of the act is further supported by other standards and laws.

Increasing energy efficiency through education

The acceptance of measures to increase energy efficiency in the building sector must be achieved using comprehensive information campaigns, competent advice and expert planning combined with targeted state funding. Current instruments within the regulatory framework, funding and market cultivation should therefore be expanded and strengthened in a deliberate manner. Moreover, an individual concept must be prepared based on independent, qualified advice on energy to select the right energy source and most suitable technology for each individual building.

One option for presenting the results of an energy consultation in a way that is clear and easy-to-understand is the individual refurbishment roadmap for residential buildings (individueller Sanierungsfahrplan für Wohngebäude, iSFP). This tool is suitable for creating roadmaps for step-by-step refurbishment as well as complete refurbishment that is done all in one go. Current information as well as downloads of the manual, quick guide and checklist for the iSFP can be found at the Climate-neutral Building Forum.


GEG surgeries for energy consultants

The Climate-neutral Building Forum’s service team offers surgeries for experts that are intended to ensure the provision of qualified advice on energy. For questions regarding special projects related to the German Buildings Energy Act (GEG), the individual refurbishment roadmap for residential buildings (iSFP) or energy balance, energy consultants can contact the service team by phone or use the online contact form from 10 am to 12 pm on Mondays, Wednesdays and Thursdays and from 2 pm to 4 pm on Mondays. Experts will find additional information on the GEG, EnEV, standards and laws in the Climate-neutral Building Forum.


Projects on the topic

geea – “Allianz für Gebäude-Energie-Effizienz” (Alliance for Building Energy Efficiency)

The Alliance for Building Energy Efficiency (Allianz für Gebäude-Energie-Effizienz, geea) is a cross-sector consortium of leading enterprises, associations and organisations in the field of energy efficiency in the construction industry.


  • Project start: 2011
  • Positions and dialogue to improve building energy efficiency
  • Publication of numerous publications, organisation of political events
  • Participation in various dialogue formats
  • 2021: 10-year anniversary
  • 2023: Almost 30 members

Campaign “zukunft haus” (“future house”).

What was originally conceived of as a portal for informing and motivating owners in 2003 has now developed into an extensive campaign and a mainstay for stakeholders from the industry and politicians, as well as for the press.


  • Project start: 2003
  • Over 9,000 newsletter subscribers
  • Approx. 30,000 press reports with a total reach (circulation) of 1.2 billion
  • Turnover of more than 6.3 million information brochures
  • Free hotline: over 100,000 questions on energy efficiency in buildings
  • Website: (consumer) information tailored specifically for a particular target group; over 8 million visitors on central internet platform