One embodiment of the present invention provides an apparatus for attaching conductive tabs to photovoltaic structures. The apparatus includes a cassette configured to store a plurality of conductive tabs and a pick-and-place apparatus configured to obtain a conductive tab from the cassette and place the conductive tab at an edge of a photovoltaic structure. The pick-and-place apparatus further includes a tab holder configured to pick up and release the conductive tab and a substantially horizontal track coupled to the tab holder. The tab holder is further configured to move back and forth along the track.