Coal has been badly hurt by ever increasing regulations.  2015 was one of those points where operators were told spend millions now to meet the new standards or we are shutting you down.   Of course the 'standards' for renewables are ignored and buckets of cash are thrown at them.   Of course they are doing well.   Obama swore he would kill coal.  And he mostly has.   Double any busineses costs while giving the opposition Or competition enough money to halve their costs and that's a result you would expect to see.   Despite all that coal is STILL cheaper energy than solar and most wind power