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Sizewell Nuclear Power Station

Along with Suffolk County Council, we are taking a joint local authority approach to the challenges and opportunities presented by Sizewell C - the proposed nuclear power station expansion at Sizewell.

EDF Energy’s Sizewell C Stage 1 consultation ended in February 2013.

Since February 2013 the Councils have been working jointly in a number of areas:

EDF Energy Sizewell C Stage 2 Consultation ended in February 2017.

EDF Energy’s Sizewell C Stage 3 Consultation ended in March 2019.

EDF Energy’s Sizewell C Stage 4 Consultation ended in September 2019


Sizewell C key milestones

The proposal is being dealt with as a National Significant Infrastructure Project (NSIP). There are 6 key milestones in the planning phase of the proposed new power station:

  • Stage 1 Consultation – suite of documents from EDF Energy setting out background and context to the development (21 November 2012 to 6 February 2013).
  • Stage 2 Consultation – suite of documents from EDF Energy with details of the overall proposal for the new Sizewell C nuclear power station as well as documents for the associated developments needed to support the construction (23 November 2016 to 3 February 2017).
  • Stage 3 consultation – gives a greater amount of technical information on the final proposal for the development (4 January to 29 March 2019).
  • Stage 4 Consultation – an additional stage focusing on delivery of materials to the site, use of land and the management of local ecology (18 July to 27 September 2019).
  • Submission of Development Consent Order (DCO) to the Secretary of State – the DCO will be developed following the refinement of proposals from the consultation stages. The Planning Inspectorate will lead an assessment of the proposal.
  • Decision by the Secretary of State – following its assessment, the Planning Inspectorate will make a recommendation to the Secretary of State. The Secretary of State will make their final decision within 3 months of receiving the recommendation.