Building Automation Under Section 56 GModG: Certified, No Renovation Required
In Germany, buildings with HVAC systems above 70 kW are now in scope. With aedifion's TÜV-certified solution, you meet the new requirements during ongoing operations.
Meet GModG Requirements With Energy-Optimized Building Operations
Under Germany's new Building Modernization Act (Gebäudemodernisierungsgesetz, GModG), the obligation to install building automation and control now applies from a rated HVAC output of 70 kW instead of 290 kW. This means that almost every commercial building in Germany with a heating, air conditioning, or ventilation system must be equipped by December 31, 2029. With aedifion, you meet the requirements of Section 56 (1), (2), and (3) GModG without renovation, directly on your existing building systems. Our solution has been tested and certified by TÜV Rheinland for this purpose.
The Law
What Your Building Must Be Able to Do Under Section 56 GModG
Under Section 56 (1), (2), and (3) GModG, the building automation and control system must be able to:
Continuously monitor, log, and analyze the consumption of all main energy sources and technical building systems, and adjust consumption
Provide data via a common, freely configurable interface so that analyses are possible independently of companies and manufacturers
Set target values for the building's energy efficiency
Detect efficiency losses in technical building systems
Inform the operator about possible energy efficiency improvements
Monitor indoor climate quality
Start Now, Not in 2029
The deadline is December 31, 2029, but the benefits start in the first year of operation. Starting now means you reduce energy consumption and carbon costs, build an auditable data foundation for ESG reporting and financing, and make your portfolio less dependent on fluctuating energy prices. Banks and investors are already asking about digital operational maturity, and auditable consumption data takes time to build up.
How to Meet Section 56 (1), (2), and (3) GModG With aedifion
The certification covers what the law requires, nothing more. This means even small, older, or barely controllable buildings can meet the obligation without a full optimization package.
Make Data Available
- Connection of your existing building systems, regardless of manufacturer
- Continuous monitoring, logging, and analysis of all main energy sources and systems
- Open, freely configurable interface for your own analyses
- Monitoring of indoor climate (temperature, humidity, CO₂) where sensors are installed
Detect Efficiency Losses
- Define energy efficiency target values for your building
- Automatic detection of efficiency losses
- Specific recommendations to the operator on where efficiency can be improved
- Status and alarm management for your operations team
Adjust Consumption
- Write access to data points to adjust consumption directly
- Optional: autonomous, AI-based optimization with .controls
TÜV-Certified Under Section 56 GModG for Existing and New Buildings
In an independent audit, TÜV Rheinland confirmed that the aedifion solution meets the requirements for building automation and control under Section 56 GModG, as it previously did under Section 71a of the German Building Energy Act (GEG). For existing buildings, the software bundle of .io and .analytics covers Section 56 (2). For new buildings, we check whether the property meets the requirements to achieve building automation class B or C, as specified in DIN/TS 18599-11:2025-10, with our .controls software module. If needed, we work with the building automation contractor to implement an overall system of local building automation and cloud platform that achieves the required automation class. Already working with aedifion under Section 71a GEG? Then you don't need to do anything.
Our Approach
Leave No Asset Behind
We leave no building behind, regardless of its energy efficiency or technical equipment. aedifion makes every building digitally accessible, via plug-and-play connection or a minimally invasive retrofit, and uses your existing building systems instead of replacing them. In our portfolio check, we compare your buildings with the requirements of Section 56 GModG and develop a specific action plan for each building.
Get Started!
Get Your Portfolio Ready for Section 56 GModG
Would you like to know whether your buildings in Germany are affected and how to meet the requirements without renovation?
Frequently Asked Questions
Our assessments are based on the current German legal framework and do not constitute legal advice.
Section 56 (1), (2), and (3) of Germany's Building Modernization Act (GModG) requires owners of non-residential buildings in Germany with heating, ventilation, or air conditioning systems above 70 kW rated output to install a building automation and control system by December 31, 2029. The system must monitor, analyze, and adjust consumption, provide open data access, detect efficiency losses, and monitor indoor climate quality. Section 56 GModG replaces the former Section 71a of the German Building Energy Act (GEG).
To all non-residential buildings in Germany whose heating system, combined heating and ventilation system, air conditioning system, or combined air conditioning and ventilation system has a rated output of more than 70 kW. What counts is the combined output of all generators in the building, not the individual system. This affects a large share of commercial buildings in Germany.
Existing non-residential buildings must be equipped by December 31, 2029. If a system that does not meet the requirements was installed in the three years before January 1, 2027, an extended deadline applies (Section 56 (4)). For new buildings, the requirements apply from construction.
No. aedifion works on your existing building systems regardless of manufacturer and is connected via plug-and-play or a minimally invasive retrofit. If sensors are missing, for example for indoor climate quality, they need to be added.
That depends on its functionality. Your building management system must continuously monitor, log, and analyze consumption, provide open interfaces, detect efficiency losses, and inform the operator. In many cases, missing functions can be added with aedifion without replacing existing technology. The first step is a gap analysis against the legal requirements.
For existing buildings, the software bundle of .io and .analytics is certified under Section 56 (2), audited by TÜV Rheinland (certificate ID C01-2026-10-21281602). For new buildings, we check whether the property meets the requirements to achieve building automation class B or C, as specified in DIN/TS 18599-11:2025-10, with our .controls software module. If needed, we work with the building automation contractor to implement an overall system of local building automation and cloud platform that achieves the required automation class.
No. aedifion was audited again under the new law and certified for Section 56 GModG.
Yes, if installing the system is technically not feasible or economically unreasonable (Section 56 (1)), and for certain buildings used for national and allied defense (Section 56 (5)). Because aedifion works on existing technology without renovation, it is worth checking whether an exemption really applies in the individual case.
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