Profitability analysis of grid supporting EV charging management

The electrification of the mobility sector is a key issue for achieving the European climate goals. However, a massive increase in the number of electric vehicles (EVs) leads to a significantly higher utilisation of the power grid – especially in the lower voltage levels – which may results in overloads or deviations from the allowed voltage range.To avoid those inadmissible grid conditions, there are two possible solutions: conventional grid enhancement and automated charging management alternatively. In this study, these two solutions are compared economically. Therefore, the expectable average grid expansion demand caused by EVs will be outlined. To this end, a probabilistic grid load simulation for several different grid structures was conducted. A smart charging management system also enables the use of the charging flexibility of EV for additional market applications; these options will also be discussed.