NOVELTY - The method comprises installing a flexible roofing substrate such as a bituminous substrate having a top surface, on a roof deck, where the top surface has receptor zones and each of the receptor zones has a different surfacing than the area of the top surface adjacent to the receptor zone and is arranged to receive photovoltaic elements (1860), disposing an adhesive material on the receptor zones, and disposing photovoltaic elements on the top surface of the flexible roofing substrate such that each of the photovoltaic elements is disposed on the receptor zones of flexible roofing substrate.    USE - The method is useful for making an element (claimed) such as a roofing-integrated photovoltaic that is useful in a photovoltaic roofing system, where the photovoltaic is useful for powering exterior lighting systems.    ADVANTAGE - The method is capable of economically making the photovoltaic roofing element with high weather resistance, enhanced UV resistance and solar reflectivity, improved flexibility, excellent aesthetic appearance, and increased power generation capability.    DETAILED DESCRIPTION - The method comprises installing a flexible roofing substrate such as a bituminous substrate having a top surface, on a roof deck, where the top surface has receptor zones and each of the receptor zones has a different surfacing than the area of the top surface adjacent to the receptor zone and is arranged to receive photovoltaic elements (1860), disposing an adhesive material on the receptor zones, and disposing photovoltaic elements on the top surface of the flexible roofing substrate such that each of the photovoltaic elements is disposed on the receptor zones of flexible roofing substrate. The surfacing of the receptor zones comprises a uncoated bituminous material, a particulate matter, a fabric, a scrim, a woven or nonwoven web, metal foil or a polymer film, and an adhesive material before disposal of the photovoltaic elements on the top surface of the flexible roofing substrate. The providing step comprises providing a flexible roofing substrate comprising receptor zones, where each of the receptor zones includes the uncoated bituminous material and adhesive material covered by a releasable liner, and removing each releasable liner before disposal of the one or more photovoltaic elements on the top surface of the flexible roofing substrate. The step of disposing the photovoltaic elements on the top surface of the flexible roofing substrate results the adhesive material disposed between each photovoltaic element and the receptor zone. The surfacing of the receptor zone is stabilized to UV radiation. The top surface of the flexible roofing substrate in the receptor zone is recessed from the top surface of the flexible roofing substrate in the area adjacent to the receptor zone. The top surface of the flexible roofing substrate has solar reflective properties. The surfacing of the receptor zones or the top surface of the flexible roofing substrate in the area adjacent to the receptor zones includes alignment marks. The method further comprises mechanically fastening the photovoltaic elements to the flexible roofing substrate, disposing a cap layer on the flexible roofing substrate to cover an area of one of the receptor zones in which no photovoltaic element is disposed. Each of the photovoltaic elements includes a fastening zone or fastening tabs. An INDEPENDENT CLAIM is included for a method for installing a photovoltaic roofing system.    DESCRIPTION OF DRAWING(S) - The diagram shows a partial schematic cross-sectional view of a photovoltaic roofing system.    Roofing membranes (1810)    Photovoltaic elements (1860)    Wiring system (1877)    Conduit (1878)    Photovoltaic roofing system. (1880)