Investing in our low-carbon future

  • 2.6k
    Suffolk construction jobs
  • 70k
    UK jobs supported
  • £4b
    Into the regional economy
  • 6m
    UK homes powered
  • 9m
    Tonnes of CO2 avoided every year of operation

Final Investment Decision Confirmed

On Tuesday 22 July 2025, Sizewell C reached its Final Investment Decision.

The government confirmed it will take an initial 44.9% stake, becoming the single largest equity shareholder – ensuring the British public directly benefits from the investment.

Other shareholders include La Caisse with 20%, Centrica with 15%, and Amber Infrastructure with an initial 7.6%.

This follows EDF’s previously announced 12.5% stake earlier in July.

Diggers on the Sizewell C site with Sizewell B in the background
Project milestones

What we’ve achieved so far

A look back at the project’s progress and important moments.

Our sustainability ambitions

We’re embedding sustainability into everything we do at Sizewell C. You can learn more about our sustainability ambitions in our document, Sustainability at Sizewell C.

Our life cycle carbon and environmental impact analysis

We’ve analysed the lifecycle impacts of Sizewell C, our 3.2-gigawatt power station in Sizewell, Suffolk. You can read the full Lifecycle Carbon and Environmental Impact Analysis report below.

Our Tax Strategy

Our Tax Strategy outlines our commitment to responsible tax practices. It details how we align our tax obligations with business activities, ensuring transparency, compliance, and contributions to the UK economy.

Our Corporate Code of Conduct

Our Code of Conduct reflects the mission and purpose at the heart of Sizewell C. It’s a practical guide to help us live our values in everything we do.

The Code applies to everyone working for, or on behalf of, Sizewell C – including employees, consultants, embedded contractors, temporary workers such as apprentices and secondees, and other service providers.

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