Re: Diesel and Coal are...
"But even that minimal control will never happen in China as they don't use emission controls properly on anything. The diesel fuel is high sulphur and so is the coal...."
There's a lot of myths about Chinese coal power plants. It's worth remembering that virtually all Chinese coal power plants are far more modern than Western coal plants, and are (in relative terms) cleaner and more efficient. Between 2012 and 2014 all grid scale plants were subject to international-class emissions limits. The continuing local pollution problems are probably linked to coal heating fuels and industrial processes, as is reported in this case (although I'm also behind the commentard suggesting that the trigger was inadequate profits at a smoking plant owned by a party official).
Of course, the current China slowdown (from which I'd hazard a guess we won't see a rebound) has resulted in dramatic reductions in demand for steel and concrete, so the invariably dirty manufacture of cement and iron will reduce, and with it the less efficient producers will go to the wall, and that will help reduce the less well controlled emissions.