KeyfactsEnergy

Sizewell C

Contacts

Sizewell C Information Office
48-50 High Street
Leiston IP16 4EW
United Kingdom

Tel: 0800 197 6102
info@sizewellc.com

Description

Sizewell C is a new nuclear power station on the East Suffolk coast, which will supply 6 million homes with low-carbon electricity.

Nuclear energy is needed as it doesn’t depend on the weather and will reduce costs for consumers. Sizewell C will play a key role in the energy transition and will be one of the biggest clean energy projects in the UK.

July 2025, the government confirmed private investment in Sizewell C — marking the Final Investment Decision and securing full funding for the project.

The government will take a 44.9% stake, becoming the single largest shareholder and ensuring the public shares directly in the benefits of the project.

Private investors include EDF, with a 12.5% stake announced earlier in July, La Caisse holding 20%, Centrica with 15%, and Amber Infrastructure with an initial investment of 7.6%.

The EPR design

The European Pressurised Reactor (EPR) reactor design has been approved by the UK’s nuclear regulator, the Office for Nuclear Regulation (ONR). This means it satisfies Britain’s high standards for nuclear safety.

The team at the UK EPR Design Centre in Bristol are industry experts bringing experience from a range of nuclear projects.

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