This paper describes the performance of a PVT solar collector in thermosyphon closed loop mode. The PVT electrical and thermal performance were evaluated and compared with a same unmodified factory PV panel. The PVT performance was evaluated by electrical, thermal and primary energy savings efficiencies. It was found that the electrical power was enhanced a 1.56%, also a thermal potential energy of 10.73% was achieved, and finally the primary energy saving was 28.14%.