All-in-one solution of hybrid photovoltaic system. Device contains three-phase 10 kW invertor, MPPT module for connecting up to 12 kWp of PV panels, control unit, BMS and batteries with capacity up to 41 kWh. Beside basic functions of battery storage system, the device offers unique control algorithm that can automatically work with differences in spot prices of electricity. HES battery storage system is completely developed and manufactured in the Czech Republic.