An attachment device for a module for collecting energy originating from solar radiation to a structure, such as a roof, a façade, or a mounting structure of a ground-mounted structure, wherein the module includes on its rear face at least one reinforcing profiled section. The attachment device includes at least one support secured to the structure. The support includes a snap-fastening mechanism with respect to the reinforcing profiled section of the module, which snap-fastening mechanism can be activated by applying a one-way thrust force pushing the module in the direction of the structure.