Most "closed coal plants" in the US are really plants that retrofitted to use nat gas. here's a decent recap (now a couple years out of date) https://www.eia.

Most "closed coal plants" in the US are really plants that retrofitted to use nat gas. here's a decent recap (now a couple years out of date) https://www.eia.gov/todayinenergy/detail.php?id=44636 https://www.eia.gov/todayinenergy/detail.php?id=44636