Posted: 24th July 2025
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Sizewell C gets green light with final investment decision. Government agrees final investment decision to give Sizewell C nuclear plant the go-ahead. Millions of working people will benefit from cheaper clean power, as the government agrees a landmark, multi-billion-pound deal to build Sizewell C – a major step forward in the delivery of a new ‘golden age’ of nuclear under the government’s Plan for Change. The Energy Secretary has today (22 July) signed the final investment decision for Sizewell C, which will deliver clean power for the equivalent of six million homes and support 10,000 jobs once operational. The deal represents the country’s most significant public investment in clean, homegrown energy this century – in a major boost for energy security, jobs and economic growth. The deal ends an era of dithering and delay to give Sizewell C the go-ahead, that will help secure Britain’s home-grown nuclear supply far beyond 2030. It marks a major step in the government’s clean energy superpower mission, which is about replacing the UK’s dependence on fossil fuel markets with clean homegrown power that the country controls, to bring down bills for good and protect family finances. The plant will deliver cheaper clean electricity for generations of families for at least six decades. Analysis shows the project could create savings of £2 billion a year across the future low-carbon electricity system once operational – leading to cheaper power for consumers. The project will also help to kick-start economic growth and get Britain building. At peak construction, Sizewell C will support 10,000 jobs directly employed in the project, and thousands more in the nationwide supply chain, as well as creating 1,500 apprenticeships. Seventy per cent of the value of construction is set to be awarded to British businesses – Sizewell C Ltd anticipates it will have 3,500 UK companies in its supply chain across the entire country.