Abstract: A composite system for the back contacting of photovoltaic modules includes a metal foil, which has a conducting-path structure, and at least one electrically insulating and stabilizing polymer layer, which is applied to the metal foil and adhesively connected to the metal foil. The main task of the stabilizing polymer layer is to mechanically stabilize the structured conducting paths such that the structured conducting paths do not move when shear forces occur, which are triggered, for example, by elevated temperature during the lamination process or during operation.