Big Tech needs electricity to fuel its rapid, electricity-guzzling expansion of its AI capabilities, but a recent deal between Constellation Energy and Microsoft can't fill the gap immediately.

Constellation Energy and Microsoft plan to restart the Three Mile Island nuclear plant, hoping they have scored a quick source of enough climate-friendly energy to power rapidly expanding data centers for artificial intelligence (AI).

With artificial intelligence putting a damper on its clean energy goals, Microsoft is turning to nuclear power in a first-of-its-kind exclusive deal with a nuclear plant. The massive amount of energy needed to power artificial intelligence has contributed to a resurgence of interest in nuclear power,