Sizewell A
Sizewell A Site is located on a 10 hectare site in Suffolk. The site generated 110 terawatt hours of electricity during its 40 years of operation and shut-down in 2006.
The site is in its decommissioning phase and the focus is now firmly on waste management and hazard reduction, with the cooling ponds the current priority.
Two major projects to accelerate demolition work have been completed, removing the cooling water crane and the two off-shore structures.
Building demolition continues with a number of facilities being dismantled and cleared, including the administration building, engineering building and C02 plant. The demolition of the National Grid sub-station is also planned.

Community Events
Sizewell Site Stakeholder Group Meeting - 2 February 2023
- Location:
- TBA
Sizewell Site Stakeholder Group Meeting - 12 October 2022
- Location:
- Sizewell Sports & Social Club, King Georges Avenue, Leiston IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Sizewell A - Quarter 2 SSG Report from 1 April - 30 June 2022
- Sizewell SSG EA report 22_09
- ONR Site Report - Sizewell B - 1 April to 30 June 2022
- ONR Site Report - Sizewell B - 1 January to 31 March 2022
- Daniel Gregory, ONR response - circulate to members
- Sizewell B report October 2022
- ONR -land-use-planning-and-the-siting-of-nuclear-installations
Sizewell Site Stakeholder Group Meeting on 8 June 2022
- Location:
- Sizewell Sports & Social Club, King Georges Avenue, Leiston IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR-SIZEWLL A- SSG- Q1 - 01 January- 31 March 2022 - J Rogers
- SSG Report - Sizewell B - 1 October to 31 December 2021
- Sizewell SSG EA report 22_05
- SSG Action tracker Jan 2022 onwards (002)
- Action from last SSG - April 2022
- SZA responses - final
- Sizewell B Stakeholder Report - Q1 - January to March 2022
- Sizewell B report June 2022
- Sizewell B response - Action 4673
Sizewell Site Stakeholder Group Meeting - 12 January 2022
- Location:
- 10am Via ZOOM, if you would like to join this meeting please contact [email protected]
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR report for Sizewell B - 1 July � 30 September 2021
- ONR report for Sizewell B - 1 April to 30 June 2021
- Sizewell B report Jan 2022
- ONR Site Report - Sizewell A - 1 October to 31 December 2021
- SSG meeting minutes 5 March 2021
- SIZEWELL A AND B MINUTES 02102020
Sizewell Site Stakeholder Group Meeting - 2 October 2020
- Location:
- ZOOM
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- SZA Site Report October 2020
- Sizewell A Site Presentation October 2020
- Sizewell B report October 2020
- SZB presentation Oct 2020
- EA SSG report Oct 2020
- ONR report for Sizewell - period 1 April to 30 June 2020
- NDA Monthly update July-August-2020
- Magnox Decommissioning Strategy Craig Ashton
- NDA Strategy - Adrian Simper Clive Nixon
Sizewell Site Stakeholder Group Meeting - 9 January 2020
- Location:
- Sizewell Sports and Social Club, King George�s Avenue, Leiston, IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- EA report for Sizewell SSG Jan 2020
- NDA Brief December 2019.docx
- ONR report for Sizewell A - from 1 July - 30 September 2019
- ONR report for Sizewell B - from 1 July - 30 September 2019
- Sizewell B report - January 2020
- SZA Site Report January 2020
- Sizewell A Site Presentation - January 2020
- Sizewell B presentation January 2020
- End State Development presentation
Sizewell Site Stakeholder Group Meeting - 26 September 2019
- Location:
- Riverside Centre, 6 Great Glemham Road, Stratford St Andrew, Saxmundham, IP17 1LL, 9 for 9.30am
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- NDA Brief September 2019
- ONR report for Sizewell A - from 1 April - 30 June 2019
- ONR report for Sizewell B - from 1 April - 30 June 2019
- Sizewell B report - September 2019
- Sizewell SSG EA report Sept 2019
- SZA Site Report Sept 2019
- (V3) A4 LEAFLET SIZEWELL
- 17 SEPT 2019 SIZEWELL RADIATION EMERGENCY Z-card 300x234
- Sizewell A Presentation- SSG September 2019
- Sizewell B September 2019
Sizewell AGM Site Stakeholder Group Meeting - 23 May 2019
- Location:
- Sizewell Sports and Social Club, King George�s Avenue, Leiston, IP16 4JX 6.30pm for 7pm
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- NDA Brief April 2019
- ONR report for Sizewell A from 1 January - 31 March 2019
- NDA Brief May 2019
- ONR report for Sizewell B from 1 January - 31 March 2019
- Sizewell EA SSG report May 2019
- Magnox Infographic English 2018_19
- SZA Site Report May 2019
- Sizewell B May SSG report 2019
- Presentation May 2019 Sizewell B
- Sizewell A Presentation- SSG May 2019
- Sizewell SSG - 23rd May Update on REPPIR 19 Liz Thomas - ONR (print)
- A.Osman REPPIR
Sizewell Site Stakeholder Group Meeting - 14 February 2019
- Location:
- Sizewell Sports and Social Club, King George�s Avenue, Leiston, IP16 4JX 9.00am for 9.30am
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR report for Sizewell A - from 1 August - 31 December 2018
- Sizewell A Site Report Feb 2019
- Sizewell B Feb SSG report 2019
- EA report for SSG February 2019
- ONR report for Sizewell B - from 1 October - 31 December 2018
- FINAL Sizewell A Presentation- SSG Feb 2019
- February 2019 Sizewell B
Sizewell Site Stakeholder Group Meeting - 4 October 2018
- Location:
- Riverside Centre, Stratford St Andrews, Great Glemham Road, Stratford St Andrews, IP17 1LL, 9.00am for 9.30 start
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- EA report October 2018 Final
- ONR report for Sizewell A period from 1 April - 30 June 2018
- ONR report for Sizewell B period from 1 April - 30 June 2018
- NDA update July 2018
- Sizewell A Site Report October 2018
- Sizewell B report October 2018
- Sizewell A Presentation - October 2018
- Sizewell B Presentation - October 2018
Sizewell Site Stakeholder Group Meeting - 19 July 2018
- Location:
- Saxmundham Market Hall, 29 High Street, Saxmundham, IP17 1AF, 6.30pm for 7.00pm start
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- SZA Site Report July 2018
- SZB July SSG report 2018
- EA report July 2018
- NDA Update July 2018.docx
- Sizewell A Presentation- SSG July 2018
- July 2018 Sizewell B
Sizewell Site Stakeholder Group Meeting - 19 April 2018
- Location:
- Sizewell Sports and Social Club, King George's Avenue, Leiston, IP16 4JX, 9.00am for 9.30am start
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- EA report April 2018
- Sizewell B site - April SSG report 2018
- RO15 data report - April SSG
- ONR report for Sizewell B - 1 October - 31 December 2017
- ONR report for Sizewell A - 1 October - 31 December 2017
- ONR report for Sizewell A - 1 January - 31 March 2018
- NDA Update April 2018
- Sizewell SSG Constitution 06.07.17
- NDA Guidance to Site Stakeholder Groups 2018 Final.0
- Sizewell A presentation April 2018
- Sizewell B presentation April 2018
- Sizewell B refuelling outage 15 photos
Sizewell Stakeholder Group Meeting - 14 December 2017
- Location:
- Aldeburgh Community and Sports Centre, Victoria Road, Aldeburgh, IP15 5HY, 9.00am for 9.30am start
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR report for Sizewell A - from 1 July - 30 September 2017
- ONR report for Sizewell B - from 1 July - 30 September 2017
- EA report December 2017
- Sizewell A report December 2017
- Sizewell B report December 2017
- Sizewell A Presentation- SSG December 2017
- December 2017 Sizewell B
- TS4 Update to Sizewell SSG_14 Dec 2017
Sizewell Site Stakeholder Group Meeting - 28 September 2017
- Location:
- Sizewell Sports and Social Club, King George's Avenue, Leiston, IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- SIZEWELL A - ONR report 01 APRIL to 30 JUNE 2017
- SIZEWELL B - ONR report 01 APRIL to 30 JUNE 2017
- Sizewell A SSG report September 2017
- Sizewell B SSG report September 2017
- Sizewell EA report September 2017
- NDA update September 2017
- SSG - Chairs report
- PRIORITISED action planner revision Sept 17
Sizewell Site Stakeholder Group AGM - 6 July 2017- rescheduled from 15 June
- Location:
- Saxmundham Market Hall, 29 High Street, Saxmundham, IP17 1AF, 6.30 for 7pm
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- NDA update June 2017
- Sizewell A ONR Report from 1 January - 31 March 2017
- Sizewell B July SSG report 2017
- Sizewell B ONR Report from 1 January to 31 March 2017
- Sizewell EA report July 2017
- Sizewell A Site Report July 2017
Sizewell Site Stakeholder Group Meeting - 16 March 2017
- Location:
- Sizewell Sports and Social Club, King George's Avenue, Leiston, IP16 4JX, 9.00 for 9.30am
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR Report for Sizewell A - from 1 October - 31 December 2016
- NDA Brief January 2017
- Strontium Investigation
- EDF SSG report March 2017
- ONR Report for Sizewell B - from 1 October to 31 December 2016
- Draft 08.12.16. SSG Minutes
- EA report for Sizewell SSG - March 2017
- Geological disposal 2017
- Geological disposal - joint flyer - update January 2017_v01
- SZA Site report March 2017
Sizewell Site Stakeholder Group meeting - Dec 16
- Location:
- Aldeburgh Community and Sports Hall, 10am
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- onr-report-sizewell-a-from-1-july-to-30-september-2016
- onr-report-sizewell-b-from-1-july-to-30-september-2016
- nda-update-november
- sizewell-ssg-report-dec-16-final
- szb-ssg-report-december-2016
- creusot-forge-issues-szb-ssg
- environmental-monitoring-results-q2-2016
- sizewell-a-presentation-ssg-dec-2016
- sizewell-b-presentation-dec-2016
Sizewell Site Stakeholder Group meeting - Sep 16
- Location:
- Sizewell Sports and Social Club, 10am
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- SZB September 2016 SSG report
- SZB Sept data 2016
- EA Sizewell SSG report Sept 16
- ONR report - Sizewell A - 1 April to 30 June 2016
- ONR report - Sizewell B - 1 April to 30 June 2016
- NDA Brief August 2016
- Habits Survey Sizewell 2015
Sizewell Site Stakeholder Group AGM - Jun 16
- Location:
- Saxmundham Market Hall, 7pm
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR report for SZB - Period 1 January to 31 March 2016
- Sizewell B June 2016 SSG report
- EA report to Sizewell SSG May 2016
- NDA Brief May 2016
- SZA Site Report Jun 2016
- Sizewell A - ONR - Quarter 1 SSG Report for period 1 January to 31 March 2016 (3)
Sizewell Site Stakeholder Group meeting - Mar 16
- Location:
- Riverside Centre, Stratford St Andrew, 10am
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- SZA Site Report March 2016
- EDF March 2016 SSG report
- ONR report for Sizewell A - Quarter 4 period 1 Oct to 31 Dec 2015
- ONR report for Sizewell B - Quarter 4 period 1 Oct to 31 Dec 2015
- EA Sizewell SSG report March 16
- NDA SSG Brief March
Sizewell SSG Subgroup meeting
- Location:
- Leiston Community Centre, King George's Avenue, Leiston, IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
Sizewell Quarterly SSG Meeting
- Location:
- Aldeburgh Community and Sports Centre, Victoria Road, Aldeburgh, IP15 5HY
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- SZB Report Dec 2015
- ONR report - Sizewell A - Period 1 July to 30 September 2015
- ONR report - Sizewell B - Period 1 July to September 2015
- EA Sizewell A&B report December 2015
- NDA Brief October 2015
- NDA Brief November 2015
- SZA Site Report December 2015
Sizewell SSG Subgroup meeting
- Location:
- Leiston Community Centre, King George's Avenue, Leiston, IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
Sizewell A and B Sites Quarterly Meeting
- Location:
- Yoxford Village Hall, Old High Road, Yoxford IP17 3HN
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- ONR - Sizewell B Report 1 April to 30 June 2015
- NDA Brief August 2015
- ONR - Sizewell A Report from 1 April to 30 June 2015
- EA report September 2015
- Sizewell B report September 2015
- Sizewell A Site Report September 2015
- Sizewell B September 2015
- Sizewell A Closure Director report - SSG Sep 2015
- NDA Draft Strategy presentation
- Sizewell B September 2015
Sizewell A and B Site Stakeholder Group meeting and AGM
- Location:
- Saxmundham Market Hall, 29 High Street, Saxmundham, IP17 1AF
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Sizewell A Site ONR report
- Sizewell B Site ONR report
- Sizewell A and B Sites Environment Agency report
- Sizewell B Site report
- SZA Site Report June 2015
Sizewell A and B Site Stakeholder Group - subgroup meeting
- Location:
- Leiston Community Centre, King George's Avenue, Leiston, IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- NDA Guidance for SSGs
- SSG Constitution 050614
- NDA Update - April 2015
Sizewell A and B Site Stakeholder Group Meeting
- Location:
- Riverside Centre, Stratford St Andrew, IP17 1LN
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Sizewell A Site report
- Sizewell B Site report
- Sizewell A Site ONR report
- Sizewell B Site ONR report
- NDA monthly update - January 2015
- NDA monthly update - February 2015
- Environment Agency A and B Site report
- HERCA-WENRA documents
- Sizewell safety advice leaflet
- Update on the revision of REPPIR
- NDA guidance for SSG's
- CoRWM Triennial Review
Sizewell A and B Site Stakeholder Group - sub group meeting
- Location:
- Sizewell Sports and Social Club, King George's Avenue, Leiston IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Basic Concepts Radiation StdQ
- Basic Concepts Radiation StdQ
- HERCA-WENRA docs
- Letter to PIZ Dec 2014 group A,B&C
- EDF Press release
Sizewell A and B Site Stakeholder Group meeting
- Location:
- Leiston Film Theatre, 74 High Street, Leiston, IP16 4BZ
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Sizewell A Site Report Dec 2014
- Sizewell B Site Report Dec 2014
- ONR - EDF - Sizewell B - Quarter 3 SSG Report from 1 July to 30 September 2014
- ONR - Magnox - Sizewell A - Quarter 3 SSG Report from 1 July to 30 September 2014
- EA Sizewell SSG report December 2014
Sizewell A and B Site Stakeholder Group - sub group meeting
- Location:
- Leiston United Reform Church, High Street, Leiston, IP16 4EL
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Sizewell SSG - EA - Action 2325 response Working Together with ONR
- NDA - SSG Brief October 2014
- Sizewell SSG Action Tracker - 12 Nov 2014
- Action 2326 response RIMNET sensor brief for Sizewell SSG
- Sizewell SSG After-Response John Busby
- EDF Energy - Sizewell SSG Actions Nov 2014
- EDF Energy - Sizewell SSG Actions Nov 2014 - Attachment No. 1 - 2014
- EDF Energy - Sizewell SSG Actions Nov 2014 - Attachment No. 2 - 2014
- NDA - Sizewell SSG Brief November 2014_
- EDF Energy - Sizewell SSG Actions Nov 2014 - Attachment No. 3 - 2014
- EDF Energy - Sizewell SSG Actions Nov 2014 - Attachment No. 4 - 2014
Sizewell A and B Site Stakeholder Group meeting
- Location:
- Yoxford Village Hall, Old High Road, Yoxford, Suffolk, IP17 3HN
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- NDA SSG Brief August 2014
- NDA SSG Brief July 2014 PDF REVISED
- EA Sizewell SSG report September 14
- Sizewell Site Report Sept 2014
- ONR EDF - Sizewell B - Quarter 2 SSG Report from 1 April to 30 June 2014
- ONR Magnox - Sizewell A - Quarter 2 SSG Report from 1 April to 30 June 2014
- Sizewell B Site Report Sept 2014
- 05.06.14. Sizewell SSG Executive Summary
- NDA SSG Brief June 2014
- 11.09.14 Sizewell SSG Executive Summary
- Sizewell SSG Action Tracker - 1 Oct 2014
- EA - Environmental Monitoring Around Sizewell
- NDA - Sizewell SSG Brief September 2014
Sizewell A and B Site Stakeholder Group sub group meeting - emergency planning
- Location:
- Sizewell Sports and Social Club, King George's Avenue, Leiston IP16 4JX
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- Sizewell Site Stakeholder Sub Group Meeting - 10 Sep � Overall briefing slides
- Sizewell SSG 140829 DECC nuclear emergency planning
Special Sizewell A and B SSG sub-group meeting - EDF Energy New Dry Fuel Store (Sizewell B)
- Location:
- Sizewell Sports and Social Club, King Georges Avenue, Leiston, IP6 4JX
- Meeting Documents:
- Meeting Minutes
Sizewell SSG
- Location:
- Saxmundham Market Hall, 29 High Street, Saxmundham, IP17 1AF
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- 02 04 14 Sub-Group SSG Mins (2)
- 06 03 14 - SSG Executive Summary (2)
- Andy Osman
- EA Report to SSG June 2014 (2) (2)
- EDF June 2014 SSG report (2)
- ONR Sizewell B Stakeholder report Q1 1 January - 31 March 2014 (2)
- ONR-Magnox - Sizewell A - Quarter 1 SSG Report From 1st January 2014 to 31st March 2014 - D Gregory (2)
- SSG Brief April 2014 (pdf) (2)
- SSG brief May 2014 (pdf) (2)
- SSG Constitution 020913
- Stuart Parr report - Marine Water Quality Monitoring off Sizewell v2 (2)
- SZA A Site Report June 2014
Sizewell A SSG meeting
- Location:
- Leiston Community Centre
- Meeting Documents:
- Meeting Minutes
Sizewell A SSG meeting
- Location:
- Riverside Centre, Stratford St Andrew IP17 1LN
- Meeting Documents:
- Meeting Agenda
- Meeting Minutes
- Associated Documents:
- EA-report-on-SZA-and-SZB-March-2014
- EDF-SZB-report-March-2014
- Magnox-SZA-report-March-2014
- Verbatim Transcript - SSG ONR - 5th March 2014 - draft 15-5-14