More and more decentralized, flexible units generate electricity and are dependent on fluctuating factors such as solar radiation or wind. This causes considerable additional fluctuations in the power grid, which must be permanently balanced to maintain power system stability. As the number of conventional power plants that so far balanced these fluctuations, is expected to decrease, alternatives need to be developed. In this context, the energy storages have a special role, since they can serve both as temporary loads and as sources. They hence provide a unique flexibility in terms of system services in order to stabilize the public power supply. The intelligent combination of stationary and specifically designed mobile storage systems, optimally harmonized to each other, will effectively contribute to the renewable resources feeding the public electric power demand.
This will allow fostering the use of emission-free electric vehicles in urban areas in a sustainable and efficient manner. Our intention is to conceptually design charging stations, which enables to simultaneously and rapidly charge a multitude of electric vehicles at any time without the risk of destabilize the public power grid. For each charging station, a maximum charging power of 400 kW is envisioned. If several vehicles need to be charged simultaneously, the charging power per vehicle will be reduced. We further aim at a new battery technology installed in vehicles that will allow to quickly recharging within a period comparable to a "classic tank-stop" of less than ten minutes. The previous disadvantages associated with fast charging in terms of life of battery and safety will be radically reduced by this novel technology. In the Power400 project, manufacturers of battery cells, research facilities and universities are working closely together. This joint research project is an important step towards the decarbonisation of the public transportation system, and hence towards climate protection.