I should have added to the advantages that fossil fuels enjoy over solar that, for the most part, negative externalities aren't put into the cost equation. I include in negative externalities not only pollution and the widespread diseases that they cause (why do you think that asthma is a world wide epidemic these days, or that people in China wear masks in many of their cities?), but the wars that we have fought over the past several decades because the government wishes to protect one of the primary sources of those fuels.