How Government is Making Solar Billionaires

Welcome to  SolarCity, the latest booming green company that has never recorded a profit. The startup’s stock price has soared by 600% since its IPO last December—it closed on Monday at $57 a share—and spiked after the company announced a couple of weeks ago that it expects business to grow by 70% to 90% next year. Yet the company, based in San Mateo, Calif., and specializing in deploying rooftop panels, ended the first six months this year $61 million in the red. Ordinarily, that sort of number might disconcert investors. But SolarCity’s business model is powered by government subsidies, which also fueled the 500% stock run-up and turn to profit this year of the electric-car maker Tesla. Steering both companies is Elon Musk.