In a method for controlling the state of charge (SOC) of a battery power plant (1), which for controlling at least one physical quantity (P, f) is connected to an electric energy distribution network (2), the state of charge (SOC) of the battery power plant (1) is detected for at least one physical quantity (P, f) of the energy distribution network (2) with a detection speed and/or detection accuracy which are greater than specified limit values for a minimum detection speed and detection accuracy of the physical quantity (P, f), and the electric power transfer between the battery power plant (1) and the energy distribution network (2) is determined by taking account of the difference between the actual and the specified control speed and control accuracy of the physical quantity (P, f) to be controlled as well as a difference between the actual and the specified height and rate of change of the power transfer between the battery power plant (1) and the energy distribution network (2).