I completely agree with Mahesh on this point. Although greener fuels are needed ASAP, there are some regions where even thinking of that is completely impossible. Developing countries are not in a position of prioritizing ecology against economic development. Even countries like China had an overwhelming increase of fuel and electric power demand. Maybe that's the reason these kinds of plans never get done... I think these actions should be planned according to the economic/social phase every area is going through. Just an opinion.