Reports & Policies

  • 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

Sizewell C's First Sustainability Report

Published on 29 October 2025, Sizewell C’s first Sustainability Report highlights our dedication to creating a lasting, positive social impact.

At Sizewell C, we’re committed to ensure that the project gives back more than it takes, creating real benefits for people, communities, and the environment.

Read the report to find out more.

Explore the report
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.

1. July 2025
Final Investment Decision

In July, the Government confirmed Sizewell C’s Final Investment Decision, securing full funding for the project.

2. June 2025
Green Light

In June, the UK Government officially gave a green light to the Sizewell C project, confirming £14.2 billion of investment as part of the government’s latest spending review.

3. October 2024
Autumn Budget

The Autumn Budget announces £2.7bn commitment to Sizewell C and says Final Investment Decision will be in the 2025 Spending Review.

4. June 2024
Commitment to Sizewell C

Labour General Election manifesto commits to Sizewell C.

5. May 2024
Regulator grants Nuclear Site Licence to Sizewell C

First nuclear site licence issued by the Office for Nuclear Regulation since Hinkley Point C’s licence in 2012.

6. January 2024
UK Government invests additional £1.3b

The funding will help Sizewell C continue to prepare for full construction.

7. January 2024
Development Consent Order triggered

Green light for formal construction to begin.

8. September 2023
Private investment process begins

The UK Government launches the formal process to raise private investment for Sizewell C.

9. August 2023
£341m government allocation for SZC

This funding allocation is to speed up preparation of site for construction, procurement of key supply chain components, and to expand the workforce.

10. March 2023
Environment permits granted

The Environment Agency grants permits which are required before construction can begin.

11. December 2022
Government invests nearly £700m

The Government agrees to invest in the project becoming a 50% shareholder alongside EDF.

12. July 2022
Development Consent Order approved

Approval of the DCO comes after the Planning Inspectorate says the benefits of the project “strongly outweigh the impacts”.

13. March 2022
New nuclear funding legislation passed

MPs vote overwhelmingly in favour of legislation to introduce Regulated Asset Base (RAB) funding for nuclear.

14. January 2022
Government invests £100m

The UK Government agreed a land option agreement with EDF to fund further development of the project.

15. May 2020
Application for planning permission submitted

Our application for a Development Consent Order (DCO) was more than 50,000 pages long.

16. October 2012
First of four rounds of local consultation begins

Our consultations in the region led to engagement with more than 10,000 people and organisations.

Reports

  • Annual Sustainability Report 2024/25

    Sizewell C is already demonstrating how major infrastructure can deliver enduring social, economic and environmental value for the UK.

    Our first-ever Annual Sustainability Report, published in October 2025, sets out the progress we’ve made and the ambition driving the UK’s newest nuclear power station.

  • Annual Report & Accounts 2024/25

    Our latest Annual Report and Accounts sets out Sizewell C’s vision to lead the way on nuclear – defining what good leadership looks like for the UK’s energy future.

    Together, these foundations will help ensure Sizewell C delivers secure, affordable energy and lasting benefits for the UK economy.

Policies

  • 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.

  • Modern Slavery & Human Trafficking Statement 2024

    We are committed to respecting human rights and opposing all forms of modern slavery and human trafficking.

    Our 2024 statement sets out the steps we are taking to prevent and address these risks across our operations and supply chain, reinforcing our commitment to responsible and ethical business practice.

Other Documents

  • 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.

  • Lifecycle 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.

     

To reach our Investor Relations team at Sizewell C, please contact us by email.

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Latest news

General News

Sizewell C to reuse over 15,000 tonnes of recycled concrete from Sizewell A in major sustainability agreement

Over 15,000 tonnes of recycled concrete has been transported from Sizewell A to Sizewell C Innovative agreement marks an important step forward in sustainable construction Project delivers combined savings and significant reduction...

General News

Sizewell C reaches Financial Close, with £5 Billion export credit backed debt raise and strong investment grade credit rating

Sizewell C, the first new nuclear project globally to be financed with independent, private financial investors, has today reached Financial Close. Following the successful conclusion of the equity raise and Sizewell C’s...

General News

First Sizewell C Sustainability Report shows how big infrastructure can build a legacy for people, communities, and the environment

Annual Sustainability Report sets out how the project will deliver lasting benefits Sizewell C on track to create 1,500 apprenticeships and increase local biodiversity by 19% More than 400 British suppliers have...

General News

Remarkable silver coin hoard donated to county council

Sizewell C has donated a remarkable hoard of over three hundred 11th century silver coins, discovered during excavation work, to Suffolk County Council’s Archaeological Service.  Unearthed in April 2023 by archaeologists working...

General News

Sizewell C signs fuel contracts in boost for energy security

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General News, Local Community

Sizewell C funds new community cycle hire scheme in Leiston

Pedal to Zero marks significant step forward in sustainable transport for the area Eighteen bikes – including nine electric bikes – available to hire at five locations around Leiston Revenue generated will...

General News

Sizewell C’s Director of Energy Strategy elected Fellow of Royal Academy of Engineering

Dr David Cole is one of 74 leading figures selected by the Academy at its AGM  Previous Fellows include the jet engine visionary Sir Frank Whittle and bouncing bomb inventor Sir Barnes...