Since I've been blogging about energy issues, there've been plenty of companies who promised revolutionary technologies, cost-saving breakthroughs, and any number of claims that we were close to the silver bullet green technology. Well, Nanosolar may not be the silver bullet, but they're the best candidate I've seen for cheap solar power, in the range of $1/watt, or comparable with coal. (And, it goes without saying, way cheaper than nuclear.)
And they've started shipping their first solar panels to a municipal power station in Germany. Awesome.