Solar power is shaping the future of home. Homes of the future may rely a lot less on centralized power, and a lot more on sources that are decentralized, renewable, and cheap. Electricity is the cornerstone of the modern world, but more than a billion people worldwide do without. Those who do live on the grid rely on expensive, aging systems increasingly vulnerable to disasters and attacks, with little back-up. The rapidly dropping price of solar panels may offer a way forward. Whether they’re Michigan suburbanites looking to pay less each month or Guatemalan homesteaders looking to plug in their first light bulb, today’s solar customers are riding a wave that could change how our lives are wired.