A photovoltaic system for generating electricity, comprising: - one or more solar trackers, wherein each solar tracker comprises a plurality of photovoltaic panels (PV1..., PVn) connected in series; - a DC/AC inverter configured to provide a direct current supply generated by said plurality of photovoltaic panels (PV1..., PVn); - a solar tracker controller and an auxiliary charging module for each solar tracker; wherein said auxiliary charging module includes, at least: - a DC/DC converter; - a battery, configured to store electric energy, connected to the DC/DC converter to assist the photovoltaic system in specific periods; and - a control unit configured to control at least one switch to modify the electrical connection of the plurality of photovoltaic panels (PV1..., PVn) connected to the DC/DC converter to accumulate electric energy, in the battery, or to supply electric energy to the photovoltaic system in said specific periods, characterized in that the plurality of photovoltaic panels (PV1..., PVn) connected to the DC/DC converter comprise: - a first configuration, in which the plurality photovoltaic panels (PV1..., PVn) are connected in series with the DC/DC converter of the auxiliary charging module storing energy; and - a second configuration in which at least one of the PV panels is connected in parallel with the DC/DC converter of the auxiliary charging module and subsequently to the battery, the latter being enabled to supply energy to the photovoltaic system and the remaining photovoltaic panels are connected in series without connection to the auxiliary charging module; wherein the control unit, through the use of a switch device, is configured to determine when said first and second configurations are set as the predetermined configuration of the photovoltaic system. - one or more solar trackers, wherein each solar tracker comprises a plurality of photovoltaic panels (PV1..., PVn) connected in series; - a DC/AC inverter configured to provide a direct current supply generated by said plurality of photovoltaic panels (PV1..., PVn); - a solar tracker controller and an auxiliary charging module for each solar tracker; - a DC/DC converter; - a battery, configured to store electric energy, connected to the DC/DC converter to assist the photovoltaic system in specific periods; and - a control unit configured to control at least one switch to modify the electrical connection of the plurality of photovoltaic panels (PV1..., PVn) connected to the DC/DC converter to accumulate electric energy, in the battery, or to supply electric energy to the photovoltaic system in said specific periods, - a first configuration, in which the plurality photovoltaic panels (PV1..., PVn) are connected in series with the DC/DC converter of the auxiliary charging module storing energy; and - a second configuration in which at least one of the PV panels is connected in parallel with the DC/DC converter of the auxiliary charging module and subsequently to the battery, the latter being enabled to supply energy to the photovoltaic system and the remaining photovoltaic panels are connected in series without connection to the auxiliary charging module; wherein the control unit, through the use of a switch device, is configured to determine when said first and second configurations are set as the predetermined configuration of the photovoltaic system.