About Hinkley Point B

Hinkley Point B is a nuclear power station near Bridgwater in Somerset. The station was the first Advanced Gas-cooled Reactor to generate electricity to the grid in the UK.

  • Station Director: Peter Evans
  • Reactor type: 2 Advanced Gas-cooled Reactors
  • Total supply to the national grid: 965 MW
  • Coolant: Carbon dioxide gas (CO2)
  • Start of construction: 1967
  • Start of generation: 1976
  • Estimated decommissioning date: 2023
  • People: Approximately 535 full time EDF Energy employees, plus over 220 full time contract partners

Power station - Hinkley Point B

Hinkley Point B is a nuclear power station near Bridgwater in Somerset. The station was the first Advanced Gas-cooled Reactor to generate electricity to the grid in the UK.

Daily status

Last updated: 15 Nov 2018 15.44hrs Generation (MW) data as at: 15 Nov 2018 11.00hrs

Reactor 3

Turbine Generator 7

In service


Nominal full load

Next statutory outage


Reactor 4

Turbine Generator 8

In service


Nominal full load

Next statutory outage



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”).

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


EDF Energy and the Nuclear Decommissioning Authority hold regular joint meetings with local people, the media, council and emergency service representatives and local politicians, to maintain regular communications about the nuclear site. This meeting is independently chaired.

The next Site Stakeholder Group meeting will be held on Friday 26 October 2018 10am to 1pm at Hill House, Otterhampton.  

Read our latest community report

Read our latest SSG letter

Report on Radioactive Discharges and Environmental Monitoring

Read a paper summarising the expected findings of graphite Inspections in the Hinkley Point B Reactor 4 outage in 2018

Group visting EDF Energy

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

Latest news

Format: 19/11/2018
Format: 19/11/2018
Donna and Paul Stevens.
Monday, July 31, 2017

Charity award for Hinkley Point B Local Hero

LOCAL couple Paul and Donna Stevens have been named as South West Heart Heroes after winning a prestigious award for their charity work in memory of their toddler son Elliot.Paul, who works at EDF Energy’s Hinkley Point B power station near Bridgwater, and wife Donna have raised more than £80,000 for research into mitochondrial disease and cardiomyopathy in just two years.


Customer sales adviser

Contact us

  • Address:
    EDF Energy
    Hinkley Point B power station
    Nr Bridgwater
    TA5 1UD
  • Reception: +44 (0)1278 654600
  • Media requests: Annelise Cowie, +44 (0)1278 654535
  • Community requests: Dave Stokes, +44 (0)1278 654699
Safety and reporting

Safety and reporting

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

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Hinkley Point C

EDF Energy is planning to build two new reactors at Hinkley Point - known as Hinkley Point C.

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