Nuclear and coal will account for majority of U.S. generating capacity retirements in 2021

According to the U.S. Energy Information Administration's (EIA) latest inventory of electric generators, 9.1 gigawatts (GW) of electric generating capacity is scheduled to retire in 2021. Nuclear generating capacity will account for the largest share of total capacity retirements (56%), followed by coal (30%).

source https://www.eia.gov/todayinenergy/detail.php?id=46436