NOVELTY - The system (102) has solar cell assemblies (108) placed on a solar exposed roof structure (104) of a building (100), where each solar cell assembly generates a direct current (DC) electricity when a portion of solar energy impacts on the solar cell assembly. The roof structure transmits a portion of the impacted solar energy into a receiving zone (106) of the building. Supporting units are positioned at predefined locations on the roof structure, where each supporting unit is attached to a corresponding solar cell assembly for supporting the assembly on the roof structure.    USE - Building integrated solar thermal electric hybrid roofing system for generating of solar thermal energy and electricity for greenhouse applications and home or business applications.    ADVANTAGE - The system allows the supporting units to allow airflow by natural convection between adjacent solar cell assemblies and between each of the solar cell assemblies and the solar exposed roof structure in high ambient temperature conditions so as to allow the solar cell assemblies to remain cooler relative to a hot ambient temperature, thus ensuring efficiency of a solar cell to be higher, and hence maintaining performance levels of the solar cell and the system. The system allows the roof structure to be inclined to face an east side, so that solar rays can impact nearly perpendicularly on the roof structure and on the solar cell assemblies, thus ensuring maximum utilization of the solar rays with high energy content during day time, and hence optimizing and economizing the system, and making installation of the system to be easier.    DETAILED DESCRIPTION - The impacted solar energy is a solar thermal energy. The roof structure is a greenhouse solar roof structure.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional elevation view of a building including an integrated solar thermal electric hybrid roofing system.    Building (100)    Building integrated solar thermal electric hybrid roofing system (102)    Solar exposed roof structure (104)    Receiving zone (106)    Solar cell assembly (108)