As reported on 16 October 2026, Sellafield Ltd and the Nuclear Decommissioning Authority marked 70 years since Queen Elizabeth II opened Calder Hall, described as the world's first nuclear power station to provide domestic electricity. The 70th anniversary fell on Saturday 17 October 2026. Calder Hall stopped generating electricity in 2003.

According to the release, the reactors have been defueled, major hazards removed and redundant plant and structures dismantled, with work now resembling conventional demolition. Sellafield Ltd CEO Euan Hutton said the station is being safely decommissioned and hazards reduced, creating space for Sellafield's future mission. Energy Minister Michael Shanks cited Sizewell C and Hinkley Point C as part of the next generation of nuclear power, while NDA Group CEO David Peattie said Sellafield supports jobs and British businesses.

The release said plans are emerging for Pioneer Park, a clean energy development planned for NDA-owned land just outside the Sellafield boundary, intended to create opportunities for new technologies, jobs and investment.