Building facade with vertical greenery and glass windows in sunlight

Glossary

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German Buildings Energy Act (GEG)

The German Buildings Energy Act (GEG) was a German federal law enacted in 2024. It set energy performance requirements for heated or air-conditioned buildings. It applied to all new and existing buildings that are heated or cooled and therefore covered residential and non-residential buildings as well as public buildings.

On July 29, 2026, the GEG was replaced by the German Building Modernization Act (GModG). The obligations and deadlines now applicable to non-residential buildings are explained in our article The Building Modernization Act (GModG): Obligations for Non-residential Buildings.

Success Stories

Beta Atrium Charlottenburg

The property “Beta – Atrium Charlottenburg” in Berlin, awarded the German Sustainable Building Council (DGNB) Gold Certificate, clearly demonstrates how a targeted digital retrofit unlocks substantial optimization potential in existing buildings—without any structural interventions.

Portfolio-Rollout AEW Invest

As one of the world’s leading real estate investment and asset managers, AEW manages assets worth € 79.1 billion and, with its Socially Responsible Investment (SRI) principles, is a pioneer in responsible investment policy.

New Eastside

Located in Munich’s up-and-coming Berg am Laim district, the New Eastside sets new standards for modern office buildings. Inspired by industrial architecture, the design concept combines historical references with contemporary aesthetics.

Buildings Simply Made Better

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