Fossil fuels will be around for some time to come but the transition off the dirty black stuff has already started. It won't happen overnight but eventually the taxes or fees to pollute with be more than the 'economical' advantage.
The EPA has phase in regulations starting in 2013 and in full effect by 2016. It will be just too expensive to burn coal for electricity. Solar will look downright cheap by then.
Add in the California 30% mandate, China mandates and the Japanese conversion and Solar has enough customers many years out. The current panic is typical of too many people reading too many headlines.