Abstract: The present invention relates to a tracking photovoltaic solar system comprising at least a tracker unit maintaining an array of photovoltaic modules (101) aligned to the sun during the course of the day.

Abstract: A tracking photovoltaic solar system, and methods for installing or for using such tracking comprising at least a dual axis tracker unit maintaining an array of photovoltaic modules aligned to the sun. Said tracker unit includes: a pair of sub-frames supporting photovoltaic modules, a torque tube supporting said subframes rotating around a primary rotation axis, a pole structure fixed and extending vertically above an anchoring basis and being rotatively connected to said longitudinal support, secondary rotating means controlling the orientation of said sub-frames around corresponding secondary rotation axis of said sub-frames, said secondary rotation axis being orthogonal to said primary rotation axis and actuators means for controlling said primary and secondary rotating means. The secondary rotation axis are located at each end of said torque tube, said pole structure being central with regard to said sub-frames and said actuators means of both primary and secondary rotating means are linear.