About Sizewell B

Sizewell B is a nuclear power station on the Suffolk coast. It is the UK’s only Pressurised Water Reactor.

  • Station Director: Robert Gunn
  • Reactor type: 1 Pressurised Water Reactor
  • Total supply to the national grid: 1198 MW
  • Start of construction: 1988
  • Start of generation: 1995
  • Estimated decommissioning date: 2035
  • People: Approximately 520 full time EDF Energy employees plus over 250 full time contract partners

Power station - Sizewell B

Sizewell B is a nuclear power station on the Suffolk coast. It is the UK’s only Pressurised Water Reactor.

Daily plant status

Find out which reactors at our eight nuclear power stations are in service and what they are generating.

This information is updated on weekdays.

Latest news and community updates

Format: 05/12/2020
Format: 05/12/2020
Sizewell B power station
Friday, February 14, 2020

Sizewell B is 25!

Sizewell B power station turns 25 today.  The station first started generating low carbon electricity on 14 February 1995 and will continue for at least another 15 years.


Sizewell B site tour

Visit us

Drop into our visitor centre or book a station tour to see for yourself how we generate electricity in a nuclear power station. Our visitor centre has an interactive exhibition where you can find out more about nuclear power generation. We also offer pre-booked tours of the power station, and it's all free of charge.


EDF Energy and the Nuclear Decommissioning Authority hold regular joint meetings (Site Stakeholder Group or SSG) with local people, the media, council and emergency services representatives and local politicians to maintain regular communications about the nuclear site. This meeting is independently chaired. 

The next SSG meeting will take place on Thursday 23 May 2019.


Sizewell C

EDF Energy aims to build a new power station with two reactors located on land next to the current Sizewell B station.

Inside a control room

Safety and reporting

Our number one priority is safety. Find out about EDF Energy's commitment to Zero Harm.

Contact us

  • Address: 
    EDF Energy
    Sizewell B power station
    Nr Leiston
    IP16 4UR
  • Reception: 
    +44 (0)1728 653653
  • Media requests:
    Marjorie Barnes
    +44 (0)1728 653378
  • Community requests:
    Niki Rousseau
    +44 (0)1728 653258

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