Abstract: Disclosed herein are a system and a method for integrally managing electric energy. The system includes a power generation unit configured to generate electric energy by photovoltaic generation, a battery unit configured to charge batteries therein with the electric energy from the power generation unit or electric energy from an external power source or to discharge the electric energy to a load, and an integrated management controller configured to control an energy transfer path of the power generation unit and the charging/discharging of the battery unit according to a predetermined power utilization algorithm and to support a user interface so that energy management status is monitored thereon.

Abstract: Disclosed herein is a system for managing charging/discharging of electric energy based on prediction for PV power and load. The system includes a power generation unit configured to generate electric energy from PV power, a energy storage unit configured to be charged with the electric energy supplied from the power generation unit and electric energy supplied from an external power supplier via one common node or to be discharged with the electric energy to a load via the one common node, and a manager control unit configured to predict a PV power and a load and schedule and control charging/discharging of the energy storage unit based on data of a result of the prediction.