What does "bidirectional energy flow" mean?
Sounds strange, but it makes sense: the bidirectional flow of energy in electric vehicles. But what does it mean? Charging – in one direction – is quite normal for the electric car driver. The electricity flows from the power grid via the charging station into the electric car. Bidirectional charging – i.e. in two directions – is part of the near future. Here, the electricity can also flow back in a controlled manner from the vehicle battery via the charging station into the power grid or into your own house if it is needed. All of this has to be regulated, because intelligent load management offers various options for providing electricity flexibly - both for the washing machine in the evening and for the power grid in certain situations.
Why is the VDE dealing with the topic?
Regarding climate protection and air pollution control in cities, electric driving plays a key role. The integration of public and private electric vehicles and their charging infrastructure into energy systems is a major challenge for our power grids not only today, but also in the years to come. This must be planned carefully and in good time. The VDE unites science, standardization, regulation, and product testing under one roof.
The norms, rules and standards developed in the specific case in the mobility sector not only guarantee safety and quality, but also promote user confidence, which creates investment security and supports economic efficiency. All those involved - from network operators to vehicle, charging infrastructure and measurement technology manufacturers to certifiers and scientists - jointly create the necessary foundations for the successful integration of the new mobility into the electricity network. In the VDE, feasible solutions are developed in various committees or working groups and project groups and balanced, technically well-founded guidelines are provided. To avoid expensive adjustments later, we always act with foresight. Norms, rules, and standards are essential for a global, successful market ramp-up.
Further information on bidirectional energy flows, including definitions and regulations, can be found in the fact check:
