The present disclosure relates to charging energy stores, for example for charging electrical vehicle batteries. Various embodiments may include methods for controlling charging operations. For example a method for controlling charging operations of a plurality of electric vehicles may include: analyzing a data record including arrival times, departure times, and charging energies of the plurality of electric vehicles during a first time period; determining an upper limit for charging power based on the data record, the determined upper limit for charging power defined by an amount of power required to charge each electric vehicle between its respective arrival time and departure time; and charging the electric vehicles without exceeding the determined upper limit for charging power during a second time period following the first time period.