In certain aspects, the present invention relates to a photovoltaic roof covering in the form of overlapping elements (i.e., tiles, shingles or panels), electrically connected to one another. Each of the elements includes a backing material and a photovoltaic layer arranged at least over that portion of the exterior face of the backing material that is exposed to the outside. Electrical conductors are positioned on each side of said photovoltaic layer and are configured to collect the electrical current generated by said layer when it is exposed to light. Notably, at least one of the connectors includes or is incorporated into a foldable moving tongue or strip and in that said tongue or said strip is kept in electrical contact with a connector of an underlying element and in a position that is folded over between the element and the underlying element.