Coal is down-trending in the USA, but it still makes up 30% of the electricity in the USA. In other countries, especially China and India, coal is expected to be burned in massive quantities for the next couple of decades. Granted, they use much more efficient coal than the US does, but let's not act like coal is disappearing overnight. It's been over 30% of the mix for decades and it will continue to be so, in a global scale, for at least a decade.