well, even if you dont subscribe to anthropogenic climate change, there are many other reasons to stop using fossil fuels, chief among them the health impact they have in urban areas, rising rates of asthma, etc. There has been a civic movement in east coast cities like Providence, RI, to move factories that use fossil fuels out of their cities because of breathing problems people living there have from them. So moving onto a new source of fuel is beneficial for health along with economic reasons.