Abstract: The apparatus for the wrapping of palletized product groups with a film or band of plastic includes a framework with two vertical support uprights on a support structure of a carriage supporting a reel of plastic film and a pre-stretching unit driven by an electric motor and envisages that the support structure consists of a vertically moving structure supported by the support framework and by a rotating ring supported by the vertically moving structure and rotating around its own axis driven by a motor anchored to the vertically moving structure and connected to it; the carriage is fixed to the rotating ring and supports an electric generator for powering the electric motor of the pre-stretching unit and maintained with its own shaft continuously linked to a respective annular toothed track fixed to the vertically moving structure.