The UK government has given final approval for the Sizewell C nuclear power project in eastern England by signing the final investment decision (FID), following commitments from both British and international investors, including Canadian pension fund La Caisse.
The government has confirmed that it will take an initial 44.9% stake, becoming the project’s largest equity shareholder. The new group of shareholders includes La Caisse with 20%, Centrica with 15%, and Amber Infrastructure with an initial 7.6%. French energy group EDF, which had already committed earlier in July 2025, holds a 12.5% stake. The Sizewell C project will involve building two nuclear reactors using EPR technology, located at the existing Sizewell nuclear site. The new reactors will have a combined capacity of 3.2 GW. Designed as a replica of the two EPR reactors currently under construction at Hinkley Point C (also supported by EDF), Sizewell C is expected to be operational by the mid-to-late 2030s.
This project is part of the UK’s broader plan to expand nuclear power capacity to 24 GW by 2050.
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