The Building Energy Act (GEG) 2023: Changes, heating inspection, biomethane and subsidies. Find out all about requirements and exemptions now! Summary: What is the Building Energy Act (GEG)? The GEG serves the national enforcement of the European Buildings Directive (EPBD) and the Energy Efficiency Directive (EED). Since it came into force in 2020, the law has gone through many iterations and was last amended on 16.10.2023. The changes came into ...