Vehicle fleets are of central importance for the diffusion and widespread use of electric vehicles (EV). Due to the high capacity utilization of fleet vehicles, the high acquisition costs of electric vehicles in fleet use can be amortized most easily and economically attractive fields of application can be developed. Furthermore, fleets account for a considerable share of new vehicle purchases. A roadmap in the "Living Lab" therefore identifies the successful integration of electric vehicles in fleets as an important milestone on the road to sustainable urban mobility.

Electric vehicles make particularly good sense in fleet use: Here, the user usually has several different vehicle categories and types available, so that the right vehicle can be selected according to current mobility needs. If planned correctly, electric vehicles can cover a large part of mobility requirements. Fleets are also increasingly serving as a communicative element for companies. Here, electric vehicles can underscore a corporate strategy geared to sustainability and at the same time promote an innovative and modern image. If electric vehicles are optimally integrated into the vehicle fleet, economic advantages can already be generated today under certain conditions. In order to enable optimal use, intelligent approaches must be found to compensate for the structural disadvantages, limited range and charging times. In addition to IT-supported vehicle deployment planning, one possible solution is to network the driver, vehicle and charging infrastructure.

The potential of this approach has not yet been sufficiently researched and tested. The reason for this is that the added value of networking can only be realized in a sufficiently large and close-meshed network, but electromobility has only been tested in smaller trials to date. There are

few findings to be able to make concrete statements about the requirements for networks. In order to gain new insights into electrification potentials for the commercial/public sector, to make well-founded statements about requirements for software-based networking and to explore viable and scalable business models, a large-scale experiment that goes far beyond the fleet sizes considered so far makes sense.

The aim of the project is to identify success factors for the economic operation of electric vehicle fleets and to prove their effectiveness. These are to be networked with each other and with the charging infrastructure through the use of electric mobility services. Electric vehicles (EV) are purely battery-powered vehicles (BEV), battery-powered vehicles with range extenders (REEV) and plug-in hybrids (PHEV).

Networking represents a further step towards the Internet of Things and Services, a link between the physical and digital worlds. In order to achieve the goals, it is essential to integrate a sufficient number of vehicles into the overall project to achieve a high density in the

shop window "Living Lab BWe mobil". Also a networking of the participating fleets with other intermodal elements (e.g. car sharing, public transport) is aimed at. The economic operation of a networked fleet of electric vehicles will be accompanied by the collection of acceptance aspects from the perspective of fleet operators and vehicle users as well as the development of proven and sustainable business models for fleet and infrastructure operation.