Tesla Faces a Challenger in the Home Solar Business

A Sunrun installer at a customer’s home in Carlsbad, Calif. Sunrun is chipping away at Tesla’s lead in the residential solar market.CreditCreditCollin Chappelle for The New York Times LOS ANGELES — Just four years after its founding in 2006, SolarCity had emerged as the nation’s leading rooftop solar power company. The company’s founders, with the […]