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: Jim Crawford
  • 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

Last updated: 25 Jul 2014 12.00hrs Generation (MW) data as at: 25 Jul 2014 12.00hrs

Reactor 1

Turbine Generator 1

In service
595MW

Status

Nominal full load

Next statutory outage

Oct-2014

Turbine Generator 2

In service
592MW

Status

Nominal full load

Next statutory outage

Oct-2014

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 meeting in progress

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 is Thursday 5 June 2014.

Read our latest community report (PDF)

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. 

Contact us

Contact us

  • Address:
    EDF Energy
    Sizewell B power station
    Nr Leiston
    Suffolk
    IP16 4UR
     
  • Reception: +44 (0)1728 653653
  • Media requests: Marjory Barnes, +44 (0)1728 653378
  • Community requests: Niki Spatchett, +44 (0)1728 653258
Safety and reporting

Safety and reporting

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

Engineer standing in a field outside Sizewell power station

Sizewell C

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

News

  • Hair-raising act of kindness

    Sizewell B, 29 May 2014

    A member of the Sizewell B catering team is giving her hair the chop this weekend to raise vital funds for Cancer Research. 
  • Sizewell B power station’s new intake of apprentices enjoyed an open evening at the station with their families before they set off to visit HMS Sultan - a world-class training centre in Portsmouth.
  • Sizewell B brings legacy fund to Suffolk

    Sizewell B, 27 March 2014

    The Wheelchair Rugby Team at Woodbridge is celebrating after a £7,000 donation from Sizewell B meant they could buy the two last chairs needed for the newly formed team.

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