You Can Finally Afford a Tesla

摘要

Installing solar power at home is good for your wallet and the environment, but storing it is no easy feat. Until recently, the process involved connecting a series of finicky, fragile, glorified car batteries. The Powerwall, unveiled by Tesla Motors CEO Elon Musk earlier this spring, is no DIY project It's a simple plug-and-play home lithium-ion battery aimed at changing the way people think about and store energy.