![Planet Money show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/026/080/small/npr-planet-money.jpg)
Summary: Just a few years ago, solar power was an expensive luxury for the environmentally conscious. Now it's a good deal for lots of people. How did solar power get so cheap, so fast?
Summary: Just a few years ago, solar power was an expensive luxury for the environmentally conscious. Now it's a good deal for lots of people. How did solar power get so cheap, so fast?