Atlantic: There are no white lab coats at solar-service provider Sungevity's Oakland headquarters. There are no hard hats, or equipment used for calibrating solar cells. Instead there are cubicles--some decorated with totally unnecessary leaf-shaped umbrellas--from which some 300 employees manipulate software and charm customers over the phone. Thirty miles north of the shuttered offices of solar-panel manufacturer Solyndra--which went bankrupt in 2011 after receiving $535 million in federal loan guarantees--Sungevity's...