Just to say it, this means less fossil fuel capaciy in the US. There are 7.85GW of new natural gas power plants and 5.22GW will be retired. So 2.63GW of added natural gas. At the same time 9.52GW of coal will be retired, meaning a net loss of 6.86GW of fossil fuel power plant capacity.
Also worth to mention that fossil fuel power plants do not have to operate all the time. Especially in grids with a lot of fossil fuels this does not happen and the US is adding a lot of those. Even more striking is that large amount of new battery storage capacity, which is going to reduce the need for fossil fuels even further.