Abstract: It comprises a frame with an upper structure (4) supporting photovoltaic modules (12) and further comprises a solar tracking mechanism which produces the frame's rotation with an azimuthal axis and a horizontal axis. The frame comprises a base (3) with assembled profiles, integrated with the ground. The upper structure (4) comprises lateral profiles (5) in a Z-shape, placed one on each side; an upper central profile (7) and a lower central profile (8) connected with connecting rods (15) and placed longitudinally among said lateral profiles (5), and transversal crossbeams (9) in the lower part of the lateral profiles (5) and the central profile (6). An actuator (11) located on the central part of the central profiles (7, 8) causes a relative movement of the central profiles (7, 8) and this way the horizontal rotation of the modules (12) is generated.