Electrical energy system at least comprising: - an electrical direct-current voltage network having a variable intermediate circuit direct-current voltage ( U ZK_DC), - an inverter which - is connected to the electrical direct-current voltage network by means of an inverter DC input having a DC input inverter nominal power (P DC) and - which is connected by means of an inverter AC output having an AC output inverter nominal power (P AC) to a three-phase electrical power supply network which has an alternating-current voltage (U-), wherein, - the inverter has an electronic power system (410,..., 490) which is configured to feed a DC power (P GRID-DC) which is located in the electrical direct-current voltage network into the three-phase electrical power supply network, and - a characteristic line control for power division comprising a large number of direct-current voltage threshold values (760, 765, 770, 775) and a large number of DC power intermediate circuit direct-current voltage characteristic lines (120, 220) by means of which systems which are connected to the electrical direct-current voltage network are controlled, in particular individually controlled, further comprising: - a first system at least having a wind turbine having a wind turbine nominal power (P WEA_Nenn) for producing an electrical wind turbine DC power (P WEA_DC) which is connected to the electrical direct-current voltage network and - a second system at least having a photovoltaic system having a photovoltaic system nominal power (P PV_Nenn) for producing an electrical photovoltaic DC power (P PV_DC) which is connected to the electrical direct-current voltage network, and - a third system at least having a bi-directional, electrical store which is connected to the electrical direct-current voltage network and which is configured, - to receive an electrical store DC power (P Peak_DC) from the electrical direct-current voltage network when the sum of the electrical wind turbine DC power (P WEA_DC) and electrical photovoltaic system DC power (P PV_DC) is greater than the DC input inverter nominal power (P DC), and - to discharge an electrical store power (P Peak_DC) to the electrical direct-current voltage network when the sum of the electrical wind turbine DC power (P WEA_DC) and electrical photovoltaic system DC power (P PV_DC) is less than the DC input inverter nominal power (P DC). - an electrical direct-current voltage network having a variable intermediate circuit direct-current voltage ( U ZK_DC), - an inverter which - is connected to the electrical direct-current voltage network by means of an inverter DC input having a DC input inverter nominal power (P DC) and - which is connected by means of an inverter AC output having an AC output inverter nominal power (P AC) to a three-phase electrical power supply network which has an alternating-current voltage (U-), wherein, - the inverter has an electronic power system (410,..., 490) which is configured to feed a DC power (P GRID-DC) which is located in the electrical direct-current voltage network into the three-phase electrical power supply network, and - a characteristic line control for power division comprising a large number of direct-current voltage threshold values (760, 765, 770, 775) and a large number of DC power intermediate circuit direct-current voltage characteristic lines (120, 220) by means of which systems which are connected to the electrical direct-current voltage network are controlled, in particular individually controlled, further comprising: - a first system at least having a wind turbine having a wind turbine nominal power (P WEA_Nenn) for producing an electrical wind turbine DC power (P WEA_DC) which is connected to the electrical direct-current voltage network and - a second system at least having a photovoltaic system having a photovoltaic system nominal power (P PV_Nenn) for producing an electrical photovoltaic DC power (P PV_DC) which is connected to the electrical direct-current voltage network, and - a third system at least having a bi-directional, electrical store which is connected to the electrical direct-current voltage network and which is configured, - to receive an electrical store DC power (P Peak_DC) from the electrical direct-current voltage network when the sum of the electrical wind turbine DC power (P WEA_DC) and electrical photovoltaic system DC power (P PV_DC) is greater than the DC input inverter nominal power (P DC), and - to discharge an electrical store power (P Peak_DC) to the electrical direct-current voltage network when the sum of the electrical wind turbine DC power (P WEA_DC) and electrical photovoltaic system DC power (P PV_DC) is less than the DC input inverter nominal power (P DC).