The Miracle of SolarCity

There’s a huge, ongoing, and justifiable obsession with Elon Musk and his ventures—chiefly Tesla, the electric car manufacturer, and SpaceX, his private spacecraft business. It’s not surprising a biography of the man was a best-seller this year. But to my mind, the most important and interesting venture that the polymathic South African immigrant helped start is the one that gets the least press. That’s SolarCity, a company that aims to paper America’s rooftops with solar panels.