Sizewell B power station

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

The lifetime output of Sizewell B is 243TWh, enough to power every home in Suffolk for 178 years

Avoiding 85m tonnes of CO2 emissions*

Like taking 41m cars off UK roads for a year

About Sizewell B

  • 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 employees plus over 250 full time contract partners
  • Daily plant status - find out which reactors at our eight nuclear power stations are in service and what they are generating (data updated on weekdays)
Sizewell B from a distance

Have you ever wondered about nuclear power’s carbon footprint?

A new analysis of Sizewell B’s lifecycle has revealed the carbon impacts are not what you might expect.

Visit Sizewell B power station

The Visitor Centre at Sizewell is now open – it is recommended to call ahead of your visit 01728 653974.

Sizewell B is the UK’s only Pressurised Water Reactor (PWR) and also the most modern nuclear power station in the UK. Our visitor centre offers a unique insight into this technology in our interactive exhibition space. 

To enhance the visitor experience, you can also pre book a tour of the power station. For school visits, a classroom is also available where young people can get involved in a wide range of STEM activities. 

Tour Information

Tour time: Visitors are advised to allow up to 3 hours for a site visit, this includes a safety brief followed by a walking tour of the power station. Please contact us for more details. 

Minimum age: Minimum age for the station tour is 11 years old 

Bookings must be made at least 3 weeks in advance.

You will be accompanied by a trained station guide. All site tours include a safety and security briefing and the issue of relevant PPE (personal protective equipment). The plant tour is a walking tour, mostly outdoors, and is 1.65 miles long.

Visitor Centre Opening Hours

Monday to Friday: 09:00 - 16.00 hours, except bank holidays.


Dates for your diary:

Our events calendar will be updated as soon as our Visitor Centre has reopened.

Frequently asked questions

If you have any questions about the visitor centre, or about taking a tour, please check our FAQs.

If you have any questions about the visitor centre, or about taking a tour, please contact our visitor centre co-ordinator:

Telephone: 01728 653974
Address: Sizewell B power station, near Leiston, Suffolk. IP16 4UR

Find out more about Sizewell B

Contact Sizewell B

  • Address:
    EDF Sizewell B power station
    Nr Leiston
    Suffolk IP16 4UR

    +44 (0)1728 653653
  • Media requests:
    Marjorie Barnes
    +44 (0)1728 653378

    Community requests:
    Niki Rousseau
    +44 (0)1728 653258

Latest news and community updates

Format: 22/09/2023
Format: 22/09/2023
Sizewell B Plant Manager, Adam Anderson and Station Director, Robert Gunn
Monday, December 19, 2022

Sizewell B powers on

Sizewell B has reached a major milestone notching up 10TWh of electricity this year! The station hit the milestone today following a weekend when a record number of people were expected to tune into the World Cup. 

Sizewell B power station
Monday, August 15, 2022

Sizewell B support for Aldeburgh carnival

A dozen Sizewell B apprentices will join Aldeburgh carnival today to assist organisers of the popular local seaside event, which is returning after a three-year break due to the pandemic.

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