The British government announced a £14.2 billion ($19 billion) investment in the Sizewell C nuclear power station in Suffolk on June 10, 2025, the historical event date. The funding forms part of a broader effort to expand domestic energy production, reduce exposure to international fossil fuel markets and move Britain’s electricity system toward low-carbon sources. [5526]
Sizewell C is planned for England’s eastern coast and is expected to begin operating during the 2030s. Officials said the station would generate enough electricity to serve the equivalent of 6 million homes. The Treasury estimated that its construction would create 10,000 jobs. [5526]
The newly announced commitment comes in addition to £3.7 billion that the government had already allocated to the project. Sizewell C would represent a significant addition to Britain’s nuclear fleet: no new nuclear power station has opened in the country since Sizewell B began operating in 1995. [5526]
Prime Minister Keir Starmer presented greater domestic energy production as a matter of security and economic control. He argued that reliance on energy produced within Britain could make the country less vulnerable to external pressure and the sharp price increases experienced by households and businesses in recent years. The government has particularly sought to limit dependence on imported oil and gas following the rise in energy costs associated with Russia’s invasion of Ukraine. [5526]
Nuclear power is also part of the government’s plan to decarbonize Britain’s electricity grid by 2030 by replacing fossil-fuel generation with low-carbon alternatives. Sizewell C itself, however, is not expected to be operational until the following decade. [5526]
Alongside the Sizewell announcement, the government named Rolls-Royce as its preferred bidder for a program to develop small modular reactors. Officials said those reactors could collectively provide enough power for about 3 million homes and support electricity-intensive industries, including artificial intelligence data centers. [5526]
The investment continues to face opposition over the economics and local consequences of nuclear construction. Critics contend that large nuclear stations take longer and cost more to develop than renewable options such as wind and solar power. Environmental groups have also warned that work at Sizewell C could harm nearby nature reserves inhabited by species including otters and marsh birds. [5526]
About 300 people protested against the development at the Suffolk site during the weekend before the announcement. Jenny Kirtley, a local resident who chairs Together Against Sizewell C, argued that the station’s expected completion in the 2030s means it cannot contribute directly to the government’s 2030 net-zero electricity objective. The competing claims surrounding the project underline the central policy trade-off: ministers see nuclear generation as long-term, reliable domestic capacity, while opponents question whether its expense, construction schedule and environmental footprint make it the best route to cleaner power. [5526]
