The present invention relates to a module system used for solar panels with PV-TE (Photovoltaic - Thermoelectric) hybrid design for cooling the systems under proper conditions, thereby increasing the efficiency thereof in order to ensure the optimal electricity generation of PV (photovoltaic) systems. The present invention particularly relates to a module system that is capable of preventing potential interruptions in electricity generation by cleaning surfaces of PV panels from accumulated snow by being mounted thereon, and that is further capable of automatically detecting the presence of snowfall by means of a sensor integrated into a microcontroller board.