Method and system for the hierarchical scheduling of energy flows in microgrids deploying battery energy storage systems

The method and system manages energy flows between an electrical grid and a plurality of microgrids that deploy at least one battery energy storage system, and which are controlled by a microgrid controller. A central controller receives electrical grid information from external sources and is arranged to generate an aggregate long-term schedule and an aggregate short-term schedule for energy flows and energy prices for the plurality microgrids connected to the central controller. A microgrid scheduler associated with each microgrid includes a long-term day(s) ahead scheduler that receives the aggregating long-term schedule and a short-term near real-time scheduler that receives the aggregate short-term schedule. The long-term day(s) ahead scheduler is arranged to generate a microgrid long-term schedule that controls energy flows between the electrical grid and each microgrid and its connected battery energy storage system that is corrected by a microgrid short-term near real-time schedule generated by the microgrid short-term near real-time scheduler.