Photovoltaic shingle system

A photovoltaic roofing member comprising:

• a strip of roofing material having a length "L.sub.s " and a width "W.sub.s, " said strip including an overlap portion having a length "L.sub.o " which is equal to L.sub.s and a width "W.sub.o, " which is less than W.sub.s, said strip including a plurality of tab portions depending from the overlap portion, said tab portions being defined by a plurality of notches cut part-way through the width of said strip, at least one of said notches being a tapered notch having a variable width "W.sub.s ";
• each tab having a length "L.sub.t " which is less than L.sub.s and a width "W.sub.t " which is less than W.sub.s, such that W.sub.t plus W.sub.o equals W.sub.s ;
• a plurality of photovoltaic devices, each affixed to a corresponding one of said tabs and each including a positive electrode;
• a negative electrode, and a body of photovoltaic material disposed there between, each device operative to generate a flow of electrical current between said electrodes in response to the absorption of photons by said body of photovoltaic material;
• an interconnect system for establishing electrical communication between said plurality of photovoltaic devices;
• and
• a positive electrical terminal and a negative electrical terminal in electrical communication with the plurality of photovoltaic devices.