The site was ground zero for a partial nuclear meltdown in 1979, which affected a separate unit and caused nearby areas to evacuate

Constellation and Microsoft signed a 20-year power purchase agreement that will pave the way for the launch of the Crane Clean Energy Center (CCEC) and restart of Three Mile Island Unit 1. Microsoft will purchase energy from the CCEC in a bid to match the power its data centers use with carbon-free energy.