Abstract: The invention is an asphalt shingle based solar power device, system, and installation method for providing asphalt shingles with embedded photovoltaic solar panels that can be installed on a roof in a manner quite similar to that of standard asphalt shingles, with a minimal need for either extra wiring or skilled labor. The invention provides shingles, underlayment layers (roofing paper), and electrical connecting tape which have embedded electrically conductive ribbon cable, such as flat braded electrical wire, configured so that the same nails that assemble the units together also electrically connect the various devices to form a useful photovoltaic electrical grid. Use of other materials and methods, such as specially designed nails with a middle conductive region, optional self-sealing materials to provide water resistance, use of safety disconnect circuits, and the like is also described.