For a long time, solar power has seemed like a thing of the future. A few environmentalists with a lot of money could afford it, but it wasn't really available for everyone.
That's changed. Suddenly, solar power isn't this weird fringe technology anymore. People get it not to save the planet, but because it's a good deal.
Today on the show: how solar power got so cheap, so fast.
Music: Joy Williams' "Sunny Day" and Podington Bear's "Better Times Ahead." Find us: Twitter/ Facebook/ Spotify/ Tumblr.