Could there be such a thing as a solar pool?

I came across a website for a group called One Block Off the Grid. At first, I thought it was an effort to construct banks of solar panels to actually power a block of homes. (How cool is that?) As I looked through it though, it seems more like they act as a middle man to negotiate a group discount between several homeowners in an area and a local solar panel installer. The site does have good information about federal and SCE incentives for going solar, but it's not clear how unbiased the deal-making would be.