Nuclear-power stocks slumped on Monday after US regulators barred a plant from supplying extra power to an Amazon data center. The Federal Energy Regulatory Commission rejected the deal between Amazon and Talen Energy late last week.

A series of recent rulings from regulators dashed the Big Tech companies' hopes of finding a quick fix for their electricity needs.

The Federal Energy Regulatory Commission (FERC) rejected an effort Friday to allow an Amazon data center to tap into additional power from a nearby Pennsylvania nuclear plant. The decision could throw a wrench in efforts by large technology companies to secure so-called “behind the meter” power from nuclear plants as they seek to meet