Sizewell B power station

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

Visitor centre

Since 1995 Sizewell B has generated 250 TWh of zero carbon electricity

House icon with power symbol

Enough to power every home in Suffolk for 192 years

CO2 cloud icon

Avoiding 87m tonnes of CO2 emissions*

Like taking 42m cars off UK roads for a year

*when compared to direct emissions of combined cycle gas turbines | all figures rounded to the nearest hundred thousand

Discover the New Sizewell Visitor Centre

We’re excited to announce that the Sizewell Visitor Centre is now open - a unique collaboration with Sizewell C. Step inside and embark on a fascinating journey through the past, present, and future of nuclear power on the stunning East Suffolk coast. This isn’t just a place to look and learn - it’s hands-on and immersive. Explore interactive exhibits that bring energy to life. Step into a sound shower for an unforgettable sensory experience. Generate your own power and see how energy works in action. 

Whether you’re curious about Britain’s energy story or just looking for a fun day out, the Visitor Centre is informative, interactive, and perfect for all ages. Come and see how nuclear power shapes our world - and your future.

Find out more

Sizewell B turns 30!

Thirty years ago a small corner of Suffolk transformed into one of the nation’s most important energy centres. 

30 years of Sizewell B

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)

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.

Find out more
Sizewell B from a distance

News from Sizewell B

Torness power station
January 21, 2026

£1.2billion investment across 2026-28 to help boost reliability and output
EDF’s Nuclear Operations business has today (21 January) published its annual fleet update, a review of 2025 performance and an outline of future developments.
Sizewell B power station from a distance
February 14, 2025

Sizewell B turns thirty!
On February 14, 1995, Sizewell B Nuclear Power Station, the single most productive nuclear reactor the UK has ever operated, synched to the electricity grid for the first time.
January 27, 2025

New study shows positive impact of nuclear power stations on UK jobs

A new report outlines the significant contribution that nuclear energy has made to economic growth in the UK over the last five decades.

Visit Sizewell B power station

We’re excited to announce that the Sizewell Visitor Centre is now open. Explore interactive exhibits that bring energy to life. Sizewell Visitor Centre is informative, interactive, and perfect for all ages. Come and see how nuclear power shapes our world - and your future.

  • Sizewell B is the UK’s only Pressurised Water Reactor (PWR) and the most modern nuclear power station in the UK.
  • Vistors are advised to allow up to 3 hours for a tour and can be pre-booked for free at least 3 weeks in advance. Minimum age for the station tour is 11 years-old.
  • Trained station guides accompany the tours which include a safety and security briefing and relevant Personal Protective equipment.
  • The plant tour is a walking tour, mostly outdoors, and is 1.65 miles long.

Opening hours

Monday to Friday: 0900 - 1600hrs

Frequently asked questions

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

Telephone: 01728 653974
Address: Sizewell B power station, near Leiston, Suffolk. IP16 4UR
Email: sizewellbtours@edf-energy.com

Contact Sizewell B

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

Reception:
+44 (0)1728 653653

Media requests:
Matthew Pardo
07384 529006

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

Community

EDF 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.

Latest Community Report

Sizewell C

Sizewell C is a new power station being built on land next to the current Sizewell B station. Sizewell C will provide decades of clean, reliable electricity for around 6 million homes. 

Find out more

Safety and reporting

Our number one priority is safety. Find out about our ​​​​​​​commitment to Zero Harm.

How we generate our power

As Britain's biggest generator of zero carbon electricity(1) we generate power from wind + nuclear + solar.

Nuclear engineer on site at nuclear power station using tablet

Careers at EDF

Interested in working at EDF? Find out about our graduate programmes, apprenticeships, internships and current vacancies.