Outside Reno, in Nevada's high desert, Tesla is building what it says is the world's largest battery factory. The Gigafactory, as it's called, will churn out batteries for the company's electric cars. But it's also making something new — a battery for the home.
Tucked away in a dusty valley near Sparks, Nev., the Gigafactory is kind of like Willy Wonka's chocolate factory: It's mysterious, it's big and few people have been inside.
Actually, "big" may not do it justice.