A method for outdoor installation of an array of solar converters including a supporting frame and a plurality of solar converters mounted on the supporting frame, wherein said supporting frame is to be laid on a supporting structure comprising an aligned series of supporting posts arranged in the installation field, wherein a vehicle is provided for transporting the array of solar converters and for laying said array of solar converters on said supporting structure, wherein the vehicle is provided with a lifting device for displacing the array of solar converters between a raised position and a lowered position, maintaining a general plane of the array with a substantially horizontal orientation, until the array of solar converters is laid on said supporting structure, said method being characterized in that: - said supporting frame of the array of solar converters includes a longitudinal beam that is to be laid on said aligned series of supporting posts, said vehicle is a carriage that comprises: - a load-bearing structure mounted on wheels; and - a main upper structure of the carriage, prearranged for receiving thereon the array of solar converters, - said lifting device being set between said load-bearing structure and said main upper structure of the carriage, loaded on which is the array of solar converters, associated to the carriage is an electronic control unit for controlling the movement of the carriage and for driving the lifting device, and said electronic control unit is configured for executing the following steps: - bringing the carriage up adjacent to a row of supporting posts in the installation field; - lifting the array of solar converters above said supporting posts; - displacing the carriage within a space comprised between two successive posts of the row; and - lowering the array of solar converters until the longitudinal beam of the supporting frame of the array of solar converters is laid on the supporting posts of the row. wherein said supporting frame is to be laid on a supporting structure comprising an aligned series of supporting posts arranged in the installation field, wherein a vehicle is provided for transporting the array of solar converters and for laying said array of solar converters on said supporting structure, wherein the vehicle is provided with a lifting device for displacing the array of solar converters between a raised position and a lowered position, maintaining a general plane of the array with a substantially horizontal orientation, until the array of solar converters is laid on said supporting structure, said method being characterized in that: - said supporting frame of the array of solar converters includes a longitudinal beam that is to be laid on said aligned series of supporting posts, - said supporting frame of the array of solar converters includes a longitudinal beam that is to be laid on said aligned series of supporting posts, said vehicle is a carriage that comprises: - a load-bearing structure mounted on wheels; and - a main upper structure of the carriage, prearranged for receiving thereon the array of solar converters, - said lifting device being set between said load-bearing structure and said main upper structure of the carriage, loaded on which is the array of solar converters, - a load-bearing structure mounted on wheels; and - a main upper structure of the carriage, prearranged for receiving thereon the array of solar converters, - said lifting device being set between said load-bearing structure and said main upper structure of the carriage, loaded on which is the array of solar converters, associated to the carriage is an electronic control unit for controlling the movement of the carriage and for driving the lifting device, and said electronic control unit is configured for executing the following steps: - bringing the carriage up adjacent to a row of supporting posts in the installation field; - lifting the array of solar converters above said supporting posts; - displacing the carriage within a space comprised between two successive posts of the row; and - lowering the array of solar converters until the longitudinal beam of the supporting frame of the array of solar converters is laid on the supporting posts of the row. - bringing the carriage up adjacent to a row of supporting posts in the installation field; - lifting the array of solar converters above said supporting posts; - displacing the carriage within a space comprised between two successive posts of the row; and - lowering the array of solar converters until the longitudinal beam of the supporting frame of the array of solar converters is laid on the supporting posts of the row.