Glossary

Energy efficiency classes describe a building’s energy performance on a standardized scale and make buildings comparable and assessable in terms of their energy demand. For non-residential buildings in Germany, a harmonized A–G scale across the European Union (EU) will apply from January 1, 2027, following the amendment by the German Building Modernization Act (GModG). The basis is a standardized calculation of primary energy demand according to DIN/TS 18599 relative to a reference building. As a result, an energy performance certificate (EPC) based on an energy balance will be mandatory for all non-residential buildings and mixed-use properties. In addition, mandatory disclosures cover operational CO₂ emissions, life-cycle greenhouse gas emissions, and the building’s responsiveness to external signals.

Using aedifion solutions, owners and operators of non-residential portfolios can improve the energy efficiency class by 1–2 levels. The cloud platform continuously captures all relevant consumption and plant data, identifies inefficiencies in real time, and automatically derives optimization measures. By retrofitting additional sensor technology, the technology also enables predictive, demand-responsive control based on external signals such as weather forecasts and occupant behavior. This makes it possible to reduce energy demand in a targeted and verifiable way by up to 28 %, which directly affects the stated efficiency class (European Standard EN 15232). aedifion also provides the consumption data required for additional reporting obligations in a structured and auditable format.