Now THAT is extremely cool. I don't know why some of you are being so negative about this. I don't agree with a lot of the warming "science", but there's no doubt we need the alternate energy sources. If this gets solar anywhere near the cost of fossil fuel prices, it's a big deal. Of course, it's still talking about generation cost, and that doesn't include storage cost for the batteries that don't exist yet. But it's a of a big step.
One thing that a lot of the climate zealots should note: this is a major advancement in solar, that would cut the cost of PV cells in half, and thus allow solar to challenge fossil fuel generation. That sort of debunks the claims that solar electricity can already be generated as cheaply, or nearly as cheaply, as by fossil fuel generation plants. That's the problem with the stories - none of them add up.
Don't get me wrong... hooray for this new technology. But it calls bull on some of the current fairy tales that have been floating around. You can't have it both ways - even though you try to all the time.