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Consulting Report
19 Dec 2025

The economic impact of Sizewell C

Commissioned by Sizewell C Ltd

Oxford Economics’ recent analysis for Sizewell C demonstrates the substantial economic boost that the Nationally Significant Infrastructure Project will make to the UK economy.

The development of a new 3.2 gigawatt (GW) nuclear power station, due to be operational in the mid-to-late 2030s, will power six million or one-in-five UK households. Our analysis shows that constructing the plant will cumulatively generate an estimated £26.6 billion of GVA across the UK economy, supporting 256,000 job years of employment. While the economic benefits will be concentrated in Suffolk, where the site is located, all UK regions will benefit: a third of GVA and over two-fifths of employment will be sustained outside of the East of England.

The benefits of the project will continue through the operational phase: the nuclear power station will generate approximately £2 billion of GVA each year and facilitate 3,360 job years of employment across the UK, including 1,170 job years in Suffolk—representing a substantial boost to the economic outlook for the Suffolk economy.

The project will contribute to enabling the UK’s net zero ambitions. The provision of low carbon energy will provide a baseload to augment the growth of renewables, while contributing to energy security by leaving the UK less exposed to global gas price volatility, and reinforcing the economic benefits of the UK’s civil nuclear sector.

The experts behind the research
  • Neil McCullough

    Neil McCullough

    Director, Cities Consultancy
    Neil McCullough

    Director, Cities Consultancy

    Neil leads a consultancy team with particular expertise in economic impact analysis, and also economic support for local, city and regional planning.
    Neil and his team have extensive experience in both quantitative and qualitative research methods, and work across the UK, but also internationally especially in the Middle East. Neil is a highly experienced project manager and presenter, including providing evidence on planning issues, and often works in partnership with other specialist consultancies.

  • Patrick Deshpande

    Patrick Deshpande

    Lead Economist
    Patrick Deshpande

    Lead Economist

    Patrick is a Lead Economist in the Cities and Regions team, specialising in economic impact model development, socio-economic profiling, and bespoke modelling on consultancy projects. Patrick is a UK Office for National Statistics Accredited Researcher. Prior to joining Oxford Economics, Patrick was a Senior Economist in the Economic Development team at AECOM.

    Patrick has a BA in Economics from the University of Leicester and an MSc in Economics from Trinity College Dublin.

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