Sizewell B

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: Paul Morton
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 status

Reactor 1

Turbine Generator 1

In service

601MW

Status

Nominal full load

Next statutory outage

Nov-2017

Turbine Generator 2

In service

593MW

Status

Nominal full load

Next statutory outage

Nov-2017

Notes

Nominal full load refers to the nominal maximum generation in megawatts from a reactor. The output from a reactor can fluctuate even when at full load for many reasons (e.g. plant conditions, sea water temperatures, operating limits/constraints etc). Where the output of a reactor is reduced by approximately 10% or more of its maximum, the reason for this will be shown. Generation figures are net of any imports into the station and may be negative when a unit is not generating.

Return to service dates are provided to the same accuracy as provided to National Grid under the requirements of the Grid Code and refer to the first full day of operation. Where a return to service date falls within approximately two weeks of the date of this report, the exact date will be shown. Where a return to service date is expected to fall more than two weeks into the future, the week commencing in which a reactor is due to return to service will be indicated (shown as “w/c”).

Sizewell B, a Pressurised Water Reactor, has one reactor and two turbines and therefore is classified as being “one reactor” and “two units”. The remainder of the stations are Advanced Gas Cooled Reactors, each having two reactors. Each of these is therefore classified as being “two reactors“ and “two units”.

Additional information on the availability of our nuclear power stations can be found on our REMIT page.

Community

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 is 14 September 2017 at 10:00hrs (venue to be confirmed).

www.sizewellssg.org

Read our latest community report (PDF)

Sizewell B Environment Product Description (PDF)

Leiston and Sizewell Community Fund Application

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.

FInd out more about tours

Contact us

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

Safety and reporting

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

Find out about safety and reporting

Sizewell C

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

Learn more about Sizewell C

News

Sizewell B inspires female students on International Women’s Day

Sizewell B, 17 March 2017

Sizewell B visitor centre hosted a group of female students as part of events to celebrate International Women’s Day
Sizewell B backs safety campaign

Sizewell B, 7 March 2017

Sizewell B has pledged its support to a campaign in the county aimed at cutting the number of drivers using mobile phones.
Suffolk students rise to energy challenge

Sizewell B, 1 February 2017

EDF Energy is supporting a group of 25 school girls from Suffolk who have taken up a challenge set by the Engineering Development Trust to reduce energy usage at school.