Since the closure of Garrett's, the town's economy has been dominated by the two nuclear power stations on the coast at Sizewell: the now decommissioned Magnox reactor of Sizewell A and the more modern Pressurised Water Reactor of Sizewell B. A number of smaller companies operate from industrial areas within the town.
Before construction commenced, the design of Sizewell B was subjected to a detailed safety review by the Nuclear Installations Inspectorate (NII), and a lengthy public inquiry.