Abstract: A photovoltaic attachment system for mounting photovoltaic panels on top of a building's roof is disclosed. The attachment system does not require drilling of holes into the roof and does not affect the integrity of the roof. The photovoltaic attachment system comprises of a grid of photovoltaic panels mounted on top of beams that are attached to the walls around the roof. The roof structure is not affected. No holes are drilled into or through the roof and no leakage of water through the roof will result from the mounting of the photovoltaic panels.