What could be the largest solar cell project in America, Southern California Edison plans to place photovoltaic solar cells on 65 million square feet of California rooftops, with the ability to power 162,000 homes in southern California.

I'm intrigued to say the least, and not simply because a photovoltaic solar project of this scale is unusual considering how expensive the technology is. In fact, most large-scale solar projects involve solar thermal technology. I'm keeping my eye on this, especially since California's ambitious state mandate that 20 percent of California's electricity be generated from renewable sources by 2010. It will be interesting to see if other utility companies—and not just in California—follow suit.