As Eric Savitz points out, National Semiconductor is the latest chipmaker to announce some solar power stuff. This is getting pretty common. Of course Cypress spun of Sunpower and that appears to be a real business. Applied Materials also has something of a business in solar, though still small. Then there's Intel, which announced that it was hiving off some solar investments, and now there's this.
So if you don't get it, here it is: If you make semiconductors, you can make solar panels (basically). It's as easy as that. From there, it's as simple as putting out a press release, and voila.