It is a difference of one or five years for businesses. You might see staggering if you had to do it all in one. I think what is holding solar back right now is manufacturing capacity. Most silicon production is presold by a number of years. Thin film is trying to fill in, and that works for businesses, but the residential market does best with silicon still. I think programs like those in NJ and CA are getting things going and there are prospects for faster build up of silicon production but right now it remains a seller's market. In five years we should see much lower costs and in another five years again, so I think the 5 year schedule makes sense.

Chris