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Near Bridgwater - Advertisement of an Application for a Variation to an Environmental Permit
What is happening?
ENVIRONMENT AGENCY
Advertisement of an application for a variation to an Environmental Permit for Hinkley Point C (HPC) Nuclear Power Station under the Environmental Permitting (England and Wales) Regulations 2016
The Environment Agency is the independent environmental regulator for the nuclear industry in England. We make sure that nuclear power stations meet our high standards of environmental protection.
We’ve received an application for a variation involving substantial change to a permit from NNB Generation Company (HPC) Limited. We must decide whether to grant or refuse the application. If we grant it, we must decide what conditions to include in the permit.
Type of regulated activities and permit number:
Combustion Activities environmental permit reference EPR/ZP3238FH/V004
Regulated facility address: Hinkley Point C, Near Bridgwater, Somerset, TA5 1UD NNB Generation Company (HPC) Limited has applied to the Environment Agency for a variation to environmental permit EPR/ZP3238FH/V004. The site is currently permitted for a combustion activity regulated under the Environmental Permitting (England and Wales) Regulations 2016.
The existing permit includes a Schedule 1.1 Part A(1)(a) activity, namely the burning of fuel in an appliance with a rated thermal input of 50 megawatts or more. This permits the operation of standby diesel generators to provide back-up electrical power at the site in the event of a loss of off-site power.
Since the permit was originally granted in 2013, several design changes have been made. The proposed variation would allow the installation of additional back-up generators and changes to those already permitted, to improve the resilience of the site in the event of a loss of off-site power. These changes would increase the combined total thermal input of the combustion plant to approximately 243 MWth, representing an increase of approximately 67 MWth compared to the previously permitted total.
As part of the proposed variation, NNB Generation Company (HPC) Limited is also seeking to reduce the permitted operational hours for the back-up generators to less than 500 hours per year. There is no change to the type of regulated activity permitted under the Environmental Permitting Regulations.
In determining the application, the Environment Agency will assess whether the operator will use best available techniques (BAT) to prevent or, where that is not practicable, minimise emissions and impacts on people and the environment. A varied permit will only be issued if all relevant legislative and regulatory requirements are met. The application can be viewed on Citizen Space using the link below.
If you have any comments send these by 16 June 2026.
Comments can be made: online: https://consult.environment-agency.gov.uk/psc/ta5-1ud-nnb-generation-company-hpc-limited-v004, via email: pscpublicresponse@environment-agency.gov.uk
For advice about how to make a representation or if you are unable to make a representation via e-mail, please call 03708 506 506
Please quote the application number in any correspondence: EPR/ZP3238FH/V004.
The Environment Agency will normally put any comments it receives on the public register. This includes your name but not your personal contact details. Please tell us if you do not want your response to be public. The privacy notice for permit applicants/operators can be viewed at https://www.gov.uk/guidance/environmental-permits-privacy-notice
Read about our work regulating Hinkley Point https://www.gov.uk/guidance/hinkley-point-nuclear-regulation
Ensuring that any new nuclear power station built in England will meet high standards of environmental protection and waste management
ASIANTAETH YR AMGYLCHEDD
Hysbyseb cais am amrywiad i Drwydded Amgylcheddol ar gyfer Gorsaf Bŵer Niwclear Hinkley Point C (HPC) o dan Reoliadau Trwyddedu Amgylcheddol (Lloegr a Chymru) 2016
Asiantaeth yr Amgylchedd yw’r rheoleiddiwr amgylcheddol annibynnol ar gyfer y diwydiant niwclear yn Lloegr. Rydym yn sicrhau bod gorsafoedd pŵer niwclear yn bodloni ein safonau uchel o ran diogelu’r amgylchedd.
Rydym wedi derbyn cais am amrywiad sy’n cynnwys newid sylweddol i drwydded gan NNB Generation Company (HPC) Limited. Rhaid i ni benderfynu a ddylid caniatáu neu wrthod y cais. Os byddwn yn ei ganiatáu, rhaid i ni benderfynu pa amodau i’w cynnwys yn y drwydded.
Math o weithgareddau rheoledig a rhif y drwydded:
Cyfeirnod trwydded amgylcheddol Gweithgareddau Hylosgi EPR/ZP3238FH/V004
Cyfeiriad y cyfleuster rheoledig: Hinkley Point C, Ger Bridgwater, Gwlad yr Haf, TA5 1UD
Mae NNB Generation Company (HPC) Limited wedi gwneud cais i Asiantaeth yr Amgylchedd am amrywiad i drwydded amgylcheddol EPR/ZP3238FH/V004. Ar hyn o bryd mae’r safle wedi’i drwyddedu ar gyfer gweithgaredd hylosgi a reoleiddir o dan Reoliadau Trwyddedu Amgylcheddol (Lloegr a Chymru) 2016.
Mae’r drwydded bresennol yn cynnwys gweithgaredd Rhan A(1)(a) Atodlen 1.1, sef llosgi tanwydd mewn teclyn â mewnbwn thermol graddedig o 50 megawat neu fwy. Mae hyn yn caniatáu gweithredu generaduron diesel wrth gefn i ddarparu pŵer trydanol wrth gefn ar y safle rhag ofn y bydd pŵer oddi ar y safle yn cael ei golli.
Ers i’r drwydded gael ei rhoi’n wreiddiol yn 2013, mae sawl newid dylunio wedi’u gwneud. Byddai’r amrywiad arfaethedig yn caniatáu gosod generaduron wrth gefn ychwanegol a newidiadau i’r rhai sydd eisoes wedi’u caniatáu, er mwyn gwella gwydnwch y safle pe bai pŵer oddi ar y safle yn cael ei golli. Byddai’r newidiadau hyn yn cynyddu cyfanswm y mewnbwn thermol cyfunol o’r gwaith hylosgi i tua 243 MWth, sy’n cynrychioli cynnydd o tua 67 MWth o’i gymharu â’r cyfanswm a ganiatawyd yn flaenorol.
Fel rhan o’r amrywiad arfaethedig, mae NNB Generation Company (HPC) Limited hefyd yn ceisio lleihau’r oriau gweithredu a ganiateir ar gyfer y generaduron wrth gefn i lai na 500 awr y flwyddyn. Nid oes unrhyw newid i’r math o weithgaredd rheoledig a ganiateir o dan y Rheoliadau Trwyddedu Amgylcheddol.
Wrth benderfynu ar y cais, bydd Asiantaeth yr Amgylchedd yn asesu a fydd y gweithredwr yn defnyddio’r technegau gorau sydd ar gael (BAT) i atal neu, lle nad yw hynny’n ymarferol, lleihau allyriadau ac effeithiau ar bobl a’r amgylchedd. Dim ond os bodlonir yr holl ofynion deddfwriaethol a rheoleiddiol perthnasol y bydd trwydded amrywiol yn cael ei chyhoeddi. Gellir gweld y cais ar Citizen Space gan ddefnyddio’r ddolen isod.
Os oes gennych unrhyw sylwadau anfonwch y rhain erbyn 16 Mehefin 2026.
Gellir gwneud sylwadau: ar-lein: https://consult.environment-agency.gov.uk/psc/ta5-1ud-nnb-generation-company-hpc-limited-v004, drwy e-bost: pscpublicresponse@environment-agency.gov.uk
Am gyngor ynghylch sut i wneud cynrychiolaeth neu os na allwch wneud cynrychiolaeth drwy e-bost, ffoniwch 03708 506 506
Cyfeiriwch at rif y cais mewn unrhyw ohebiaeth: EPR/ZP3238FH/V004
Fel arfer, bydd Asiantaeth yr Amgylchedd yn rhoi unrhyw sylwadau y mae’n eu derbyn ar y gofrestr gyhoeddus. Mae hyn yn cynnwys eich enw ond nid eich manylion cyswllt personol. Dywedwch wrthym os nad ydych am i’ch ymateb fod yn gyhoeddus.
Gellir gweld yr hysbysiad preifatrwydd ar gyfer ymgeiswyr/gweithredwyr trwyddedau yn https://www.gov.uk/guidance/environmental-permits-privacy-notice
Darllenwch am ein gwaith yn rheoleiddio Hinkley Point https://www.gov.uk/guidance/hinkley-point-nuclear-regulation
Sicrhau y bydd unrhyw orsaf bŵer niwclear newydd a adeiledir yn Lloegr yn bodloni safonau uchel o ran diogelu’r amgylchedd a rheoli gwastraff.
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