Methane, yes. The coal plants are being slowly shut down, as they are too expensive to run even after they were paid for.

You also seem to ignore the huge amount of utility-level PV farms and generation-side storage built recently. You are technically correct in that renewables don't fit everywhere, but that's again a common propaganda phrase because they fit the places where almost everybody lives, and long distance transmission already solves the problem for most people outside of that area.