The first bidirectional chargeable electric vehicles are on the market and bidirectional wallboxes are coming soon. This technology enables to also discharge the vehicle's battery storage und use it as flexibility. Because of the ramp up of electrical vehicles this flexibility shows huge potential that needs to be integrated into the ecosystem, market and grid. The use case Vehicle-to-Home (V2H) enables customers to increase their self-sufficiency and make use of dynamic tariffs. Whereas Vehicle-to-Grid (V2G) makes the temporarily stored energy accessible market, grid, or system-oriented. Bidirectional charging not only offers greater flexibility and efficiency in energy consumption, but also actively contributes to optimizing the use of energy when it is most profitable for the customer and the supplier. On top of that this contributes to the development of a sustainable and intelligent energy future, e.g. by increasing the use of green energy. Also, the value potential estimations show a huge monetary benefit for the customer and the supplier of the solution.

The BMWK in Germany brought together nine countries and over 150 people from different industry partners into a so-called coalition of the willing to answer the question:

"What do we still have to do to enable bidirectional charging?"

E.ON was part of this coalition and jointly set the course for what needs to be done to make all systems interoperable with standardized interfaces for several use cases for bidirectional charging. The coalition's main vision is to exchange data fairly and transparently, challenge the current legal framework, identify all hurdles and ultimately create a level playing field for all participants.

In our project BDL Next we work together with a consortium of BMW, Bayernwerk, Compleo, KEO, FfE, Tennet, EBZ, Uni Passau and KIT. (see also www.bdlnext.de)

As the direct successor to the BDL project, we now want to bring bidirectional charging solutions for electric vehicles into mass production. The core of the project is the further development of technical solutions to link vehicles capable of feeding energy back into the grid with established processes in the energy industry for marketing on the energy market or for grid and system support. The three-year project is being funded by the Federal Ministry for Economic Affairs and Climate Protection with over eleven million euros.

E.ON takes over the part of the energy market, energy supply and aggregation/disaggregation of flexibilities especially the battery of the car.

Our presentation will be based on the results of the project BDL Next and of the coalition of the willing.