It costs more to continue mining and burning coal in an existing, paid-for plant than to build out the renewables to replace it and switch to that. So, the onl

It costs more to continue mining and burning coal in an existing, paid-for plant than to build out the renewables to replace it and switch to that. So, the only thing preventing shutdown of coal is that it takes time to build out renewables. There might be opposition from workers dependent on coal mining, and their pols.