(Berlin/Frankfurt am Main, July 15, 2026) For the first time, VDE FNN is presenting two solutions that enable the specific implementation of the requirements for so-called grid-oriented control under Section 14a of the Energy Economy Act (EnWG) in multi-unit residential buildings. This will allow even more tenants and homeowners to charge their electric cars at home. This results in significantly more charging points that can be integrated into the building’s energy management system and used in compliance with the law. Section 14a of the EnWG requires grid operators, in rare cases of high grid load, to temporarily reduce the power consumption of high-power devices—such as wall boxes—in order to maintain grid stability even during congestion. Grid customers benefit from reduced grid fees and a grid that remains reliable.
The “Teamwork” model is the favorite
VDE FNN presents two solutions for controlling charging stations in multi-unit residential buildings and describes their implementation. VDE FNN offers a clear recommendation: In the “Teamwork” solution, all charging points are connected via an energy management system (EMS). The “Teamwork” solution offers more advantages for residents: The energy management system ensures optimal utilization of the shared grid connection. Residents can have the available power automatically managed according to their criteria, thereby making optimal use of it. New charging points or additional controllable devices can be easily added.
Alternatively, control based on the “everyone does their own thing” approach is possible. In this case, the operators of the respective wallboxes can manage their controllable consumption devices independently of one another. However, in the case of grid-oriented control measures, the available power cannot be freely allocated. Important: Very high power levels can be placed on the building’s service connection. Therefore, planners and installers must design the building’s electrical installation accordingly.
Contributing to the Energy Transition and a Reliable Power Supply
The VDE FNN guideline provides guidance for professionals, focusing on everyday life in multi-unit buildings and usage by residents. Heike Kerber, Managing Director of VDE FNN, explains: “The ‘Teamwork’ solution enables shared, optimal use of the grid connection in multi-unit buildings—exactly what many people are currently looking for. This ensures that the existing grid connection is used efficiently. The description of these two concepts makes it easier to plan and operate charging stations in multi-unit buildings.”
The first version of the VDE FNN guideline focuses specifically on charging infrastructure and is available online (in German).
