Yes size is a big factor, but with the "green movement" people fail to realize how great coal is for this country. I always hear people doggin it like there is so much crap going into the air, when in all actuallity you can do emissions controls just like a car. If you can make a low emissions toyota that runs off of gas you can make a low emissions coal plant just the same. The problem lies in the fact that china, a country with such a demand for power uses coal b/c its cheap. They dont end up putting emissions controls on b/c their country doesnt require it. Hence coal can be dirty if you dont try and clean it up. The air we breathe is the same that they do. If you want to dog on anyone about coal it shouldnt be the United States who takes the blame and is forced by peta or the UN to take action to stop coal plants. Coal is a resource that america has an abundance of... we should become more independant.