METHOD FOR DETERMINING AN ELECTRICAL TRANSFER ENERGY FLOW INTO OR OUT OF A RESERVE UNIT, USE OF THE RESULT OF THIS METHOD, AND CONTROL SYSTEM FOR CARRYING OUT THE METHOD

The invention relates to a method for determining an electrical transfer energy flow (E) into or out of a reserve unit (RE) comprising: * an electrical consumer group (D), * an electrical energy storage system (ESS) comprising an electrical energy store (B) and * an electrical energy generation apparatus (PV), wherein the reserve unit (RE) is connected to an electrical transmission network (G) via a first electrical counter device (Z1) for ascertaining the network energy flows between the transmission network (G) and the reserve unit (RE). According to the invention, the method comprises the steps of: * ascertaining an energy consumption flow (Ed) of the electrical consumer group (D) per unit of time; * ascertaining a network energy flow (Eg2re) from the electrical transmission network (G) into the reserve unit (RE) per unit of time; * ascertaining a generator energy flow of the electrical energy generator apparatus (PV) per unit of time; * ascertaining a store energy flow (Ebe) between the electrical energy store (B) and the electrical consumer group (D) and/or the electrical transmission network (G) per unit of time; and * determining the transfer energy flow (E) in the unit of time using the energy conversion law, wherein additional electrical energy flows are ascertained within the reserve unit (RE) by additional counter devices (Z2, Z3) such that, for different scenarios and boundary conditions, the transfer energy flow (E) is present as a measured value of a single of the first or one of the additional electrical counter devices (Z1, Z2, Z3). The invention also relates to the use of the result of this method and to a control device (SE) configured and designed to carry out this method or to the use of the method results.