PopSci's green tech innovation of the year: Nanosolar Powersheet

Popular Science has posted its "Best of What's New 2007" article, where they showcase the most innovative technologies that have come up this year. The winner of the "green tech" category: an ultra-light-wight and cheap solar panel. From the article:

Cost has always been one of solar’s biggest problems. Traditional solar cells require silicon, and silicon is an expensive commodity [...] Nanosolar’s cells use no silicon, and the company’s manufacturing process allows it to create cells that are as efficient as most commercial cells for as little as 30 cents a watt. “You’re talking about printing rolls of the stuff—printing it on the roofs of 18-wheeler trailers, printing it on garages, printing it wherever you want it,” says Dan Kammen, founding director of the Renewable and Appropriate Energy Laboratory at the University of California at Berkeley. “It really is quite a big deal in terms of altering the way we think about solar and in inherently altering the economics of solar.”

This is great, because it goes a long way to solving one of the biggest drawbacks of solar power. I hope these guys are successful!