Al writes: "A startup based in Toledo, Ohio, has developed a way to make large, flexible solar panels using a roll-to-roll manufacturing technique. Thin-film amorphous silicon solar cells are formed on thin sheets of stainless steel and each solar module is about one meter wide and five-and-a-half meters long. Conventional silicon solar panels are bulky and rigid, but these lightweight, flexible sheets could easily be integrated into roofs and building facades. They could even be rolled up and carried in a backpack, says the company's cofounder and president, Xunming Deng. "You could take it with you and charge your laptop battery," he says."