Energy supply system includes at least one local energy supply unit, at least one local energy consumption unit at least one local energy store, and a control unit which controls the energy consumption, by the at least one local energy consumption unit of the energy supply system, of the volume of energy generated by the at least one local energy generation unit, and the volume of energy stored in the at least one energy storage unit. After detecting at least one predictable future event which will influence the volume of energy generable by the energy consumption units and/or the volume of energy which can be drawn from the energy supply network and/or the volume of energy consumed by the energy consumption units, the control unit dynamically adapts an energy reserve, stored in the at least one local energy store, as a function of the detected events.