Nuclear energy has a complicated history in the United States, due in large part of Three Mile Island itself. In the 20th century, it was billed as a clean energy of the future but the partial meltdown of TMI's Unit 2 in 1979 soured public support and helped dampen many other proposed nuclear plants.

Three Mile Island, the site of worst nuclear disaster in the United States, is reopening and will sell the power to Microsoft for its AI efforts.