ENERGY STORAGE SYSTEM

The present disclosure relates to an energy storage system. The energy storage system may include: a battery system configured to include a plurality of battery banks electrically connected to each other; and a plurality of battery management systems each configured to communicate with the plurality of battery banks and to receive state data from a corresponding battery bank among the plurality of battery banks. The plurality of battery management systems may include first and second ports for TCP/IP or UDP communication, respectively, and communicate in a daisy chain manner with other battery management system using the first and second ports.