The sectoral coupling of road traffic （in form ofE-Mobility） and electrical energy supply （known as power-to-vehicle （P2V）, vehicle-to-grid （V2G） is discussed as oneof the possible development concepts for the flexiblesystem integration of renewable energy sources （RES） andthe support of the objectives of the German energytransition （aka. Energiewende）. It is obvious that E-mobility, which shall produce as few emissions as possible,should be based on the exclusive use of renewableenergies. At the same time, the E-mobility can help toreduce the negative effects of the grid integration of RES tothe distribution grids. However, this assumes that theelectric vehicles are smart integrated to the grids wherethey charge, meaning that they must be able to commu-nicate and be controllable. Because per se unplanned anduncontrollable charging processes are harmful for the gridoperation, especially if they occur frequently and unex-pected in similar time periods, the effects can hardly becontrolled and can lead to serious technical problems inpractical grid operation. This paper provides an insight intothe current development of E-mobility in Germany. Theinsight will be matched with the German development ofthe RES. By the combination of both sectors, the possiblerole of the E-mobility for the distribution grid will bedepicted, which can have positive and negative aspects.
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