Handling surplus and/or deficit of energy in local energy systems

A server configured to handle surplus or deficit of energy in local energy systems, the server comprising:

• a receiver configured to receive a current state of charge of an accumulator of a moveable device together with a minimum and/or a maximum state of charge of the accumulator, and to receive, from a first subset among a plurality of local energy systems, an excess amount of energy available for transfer from each of the local energy systems of the first subset together with a time period of availability of the energy and, from a second subset among the plurality of local energy systems, an energy need of each of the local energy systems of the second subset together with a time period of the need of the energy, and
• a control circuit configured to:
• determine, using an accumulator determining function, an accumulator status, wherein the accumulator status comprises a current state of charge of the accumulator together with a minimum, and/or a maximum state of charge of the accumulator;
• determine, using a local energy system status determining function, an energy status of each of the local energy systems, wherein the energy status of a respective local energy system in the first subset comprises an amount of energy available for transfer to the accumulator of the movable device from the respective local energy system of the first subset together with a time period of availability of the energy, and wherein the energy status of a respective local energy system in the second subset comprises an amount of energy needed at the respective local energy system of the second subset together with a time period of the need of the energy;
• score, using a guiding function, each of the plurality of local energy systems, wherein the score is a comparison of the respective energy status of the respective local energy systems and the accumulator status the accumulator of the moveable device;
• and
• determine, using the guiding function, a local energy system among the plurality of local energy systems to which the moveable device is to be directed, wherein the determination is based on the respective scores of each of the plurality of local energy systems.