Abstract: A roof integrated photovoltaic mounting system includes a plurality of aluminum rails mountable in horizontal spaced relationship on a roof for receiving courses of photovoltaic panels or photovoltaic tiles. The PV panels or tiles have an extruded attachment feature along their forward edge portions that defines a downwardly projecting forwardly facing hook. Panels or tiles are installed by placing each panel or tile on a pair of rails and sliding the panel or tile down until its forward facing hook engages beneath a rear facing tongue on a rail below. A PV panel or tile in a next lower course is installed by slipping its rear edge beneath the forward edge of a panel or tile in a next higher course. The panel is then hinged down about its rear edge until its forward edge portion engages a support rail below. The panel is then slid down until the hook of its attachment fixture engages beneath the tongue of the downslope rail.

Abstract: A roof integrated photovoltaic mounting system includes a plurality of aluminum rails mountable in horizontal spaced relationship on a roof for receiving courses of photovoltaic panels or photovoltaic tiles. The PV panels or tiles have an extruded attachment feature along their forward edge portions that defines a downwardly projecting forwardly facing hook. Panels or tiles are installed by placing each panel or tile on a pair of rails and sliding the panel or tile down until its forward facing hook engages beneath a rear facing tongue on a rail below. A PV panel or tile in a next lower course is installed by slipping its rear edge beneath the forward edge of a panel or tile in a next higher course. The panel is then hinged down about its rear edge until its forward edge portion engages a support rail below. The panel is then slid down until the hook of its attachment fixture engages beneath the tongue of the downslope rail.