METHODS AND SYSTEMS FOR MANAGING STATE OF CHARGE OF AN ENERGY STORAGE SYSTEM DURING OFF-GRID OPERATION

The present disclosure provides a system and method for managing the state of charge of an energy storage system that is used as a backup power supply source in an electrical system. The energy storage system can operate in a selected mode of operation that includes a normal mode, a hibernation mode, and a suspension mode. A controller of the energy control system can determine the selected mode of operation for the energy storage system based on the current time of the day and electronic data related to a backup PV power generation system, the energy storage system, and a plurality of loads.