Some argue that major technical breakthroughs are needed to make electricity from sunshine cheap. Are they right?
But Subhendu Guha, chairman of PV maker Uni-Solar, disagrees: “People say we need a revolution to get to grid parity. The revolution has already happened.”
Uni-Solar manufactures thin-film solar cells made from amorphous silicon. The company has built a machine in Auburn Hills Michigan that churns out nine miles of such photovoltaics in 62 hours—and Guha hopes to make the revolutionary machine even bigger soon.