Sizewell A

10 Site area (Hectares)
319 Current number of full time equivalents
110 Station lifetime output of electricity (TWh)

Current phase: Defuelling

Key near term activities

The key activity for the site is working steadily towards completion of defuelling in 2015.

It is also undertaking project works to enable its transition into decommissioning such as the electrical and control and instrumentation overlay projects. The site will also continue its ongoing efforts to ensure that systems and structures remain fit-for-purpose and use a process called  “configuration control” to create opportunities for future deplanting and demolition work as resources and funding are available.


  • More than 50% of the fuel has now been removed from the site.


Small and Medium Enterprises (SMEs) are a key link in our supply chain and Magnox is committed to supporting the SME agenda for growth.

Opportunities for contracts and ways to become a supplier are set out in the main Suppliers pages of this website.


Site Stakeholder Groups (SSG) are long-established at each of the Magnox sites and provide an opportunity for stakeholders to find out more about the work being undertaken there.

Independently-chaired, the SSG meets regularly to examine our work, as well as that of the Nuclear Decommissioning Authority (NDA) and regulators. The SSG’s membership includes local councillors, non-governmental organisations and other interested stakeholders.

If you would like to apply for socio-economic funding please visit:

Community Events

10th September 2014

Sizewell A and B Site Stakeholder Group sub group meeting - emergency planning


Sizewell Sports and Social Club, King George's Avenue, Leiston IP16 4JX

Meeting Documents:

Associated Documents:

4th December 2014

Sizewell A and B Site Stakeholder Group meeting


Leiston Film Theatre, 74 High Street, Leiston, IP16 4BZ

Meeting Documents:

Associated Documents:

View All reference documents

Contact Secretariat:

Jim Roberts,
Communications Office, Sizewell A Nuclear Site, Nr Leiston, Suffolk, IP16 4UE

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