The problem is, there is no plan in the US to upgrade the power grid - either at privaty company level, state level or federal level. It’s just no in the cards. And the grid is headed straight for a complete collapse with the double whammy of electric cars and AI.
The other problem is, if you keep using coal to meet electrical demands, this will certainly make zero dent on carbon emissions. The other thing that needs to happen besides upgrading the grid is a massive increase in combined renewables / battery storage solution, or of course viable fusion power (fat chance…)