Margam Connection
We are proposing an extension to the existing substation at Margam, along with an underground cable route. This will support the electrification of Tata Steel’s new electric arc furnace and provide capacity for future connections. In doing so, it would play a key role in securing jobs in the area and supporting the creation of green steel.
We have a legal obligation to connect customers to our network when a connection is requested.
Community impact
We always plan to complete any work with the minimum of disturbance to the local community and businesses near to our sites.
The substation extension will be on land already owned by National Grid so any construction work would be within this area. This substation will be connected to one on Tata steel land via an underground cable.
We have completed numerous surveys and assessments onsite details of which will be available in our planning application to Neath Port Talbot Council.
Keeping the community informed
We held a public information event on Thursday 17 July 2025 at Margam Community Centre to share details of our proposal with the community and was an opportunity to meet the project team and ask questions.
For more information, please see the Margam Connection leaflet.
Pre-application consultation
We are undertaking a statutory pre-application consultation to share our final draft application documents for review and comment.
The pre-application consultation is open from 11 September to 09 October 2025.
The application documents are listed below. People can respond to the consultation in writing by writing to us at [email protected] or Freepost National Grid substation.
Following the consultation, we will prepare a Pre-Application Consultation Report summarising how we have delivered consultation and the feedback we have received.
We will then submit our planning application to Neath Port Talbot Council.
Contact us
For further information or to ask a question, please contact us by email at [email protected], or call 0800 024 1437.
Cysylltiad Margam
Rydym yn cynnig estyniad i'r is-orsaf bresennol ym Margam, ynghyd â llwybr cebl tanddaearol. Bydd hyn yn cefnogi trydaneiddio ffwrnais arc trydan newydd Tata Steel ac yn darparu capasiti ar gyfer cysylltiadau yn y dyfodol. Wrth wneud hynny, byddai'n chwarae rhan allweddol wrth sicrhau swyddi yn yr ardal a chefnogi creu dur gwyrdd.
Mae gennym ymrwymiad gyfreithiol i gysylltu cwsmeriaid â'n rhwydwaith pan ofynnir am gysylltiad.
Effaith cymunedol
Rydym bob amser yn bwriadu cwblhau unrhyw waith gyda chyn lleied o aflonyddwch â phosibl i'r gymuned leol a busnesau sy'n agos at ein safleoedd.
Bydd estyniad yr is-orsaf ar dir sydd eisoes yn eiddo i'r Grid Cenedlaethol felly byddai unrhyw waith adeiladu o fewn yr ardal hon. Bydd yr is-orsaf hon wedi'i chysylltu ag un ar dir Tata Steel trwy gebl tanddaearol.
Rydym wedi cwblhau nifer o arolygon ac asesiadau ar y safle a bydd manylion amdanynt ar gael yn ein cais cynllunio i Gyngor Castell-nedd Port Talbot.
Rhoi’r wybodaeth ddiweddaraf i’r gymuned
Cynhaliwyd digwyddiad gwybodaeth gyhoeddus ddydd Iau 17 Gorffennaf 2025 yng Nghanolfan Gymunedol Margam i rannu manylion ein cynnig gyda'r gymuned ac roedd yn gyfle i gwrdd â thîm y prosiect a gofyn cwestiynau.
Am ragor o wybodaeth, gweler taflen Cysylltiad Margam.
Ymgynghoriad cyn-ymgeisio
Rydym yn cynnal ymgynghoriad cyn-ymgeisio statudol i rannu ein dogfennau cais drafft terfynol i'w hadolygu a rhoi sylwadau arnynt.
Mae'r ymgynghoriad cyn-ymgeisio ar agor o 11 Medi i 9 Hydref 2025.
Rhestrir dogfennau'r cais isod. Gall pobl ymateb i'r ymgynghoriad yn ysgrifenedig drwy ysgrifennu atom yn [email protected] neu is-orsaf Freepost National Grid.
Yn dilyn yr ymgynghoriad, byddwn yn paratoi Adroddiad Ymgynghori Cyn-ymgeisio yn crynhoi sut rydym wedi cynnal yr ymgynghoriad a'r adborth a gawsom.
Yna byddwn yn cyflwyno ein cais cynllunio i Gyngor Castell-nedd Port Talbot.
Cysylltwch â ni
Os oes gennych unrhyw gwestiynau, cysylltwch â ni trwy e-bost ar [email protected], neu ffoniwch 0800 024 1437.
Document Library
Notices
Agricultural
Air Quality
Arboricultural
Carbon
Construction and environmental management plans
- Construction Environmental Management Plan (CEMP)
- Construction Logistics Plan (CLP)
- Surface Water Management Plan (SWMP)
- Waste Management Plan (WMP)
Ecology
- EcIA Supporting Cover Letter
- Ecological Impact Assessment (EcIA)
- Habitat Management Plan (Margam Burrows)
- Landscape and Habitat Man Plan (LHMP)
- Shadow Habitat Regulations Assessment (sHRA)
- Botanical Survey Report
- Breeding Bird Survey Report
- Great Crested Newt Survey Report (GCN)
- Bat Survey Interim Report
- Interim Invertebrate Survey Report
- Reptile Survey Report
- Water Vole and Otter Report
- Wintering Birds survey Report
EMF
Fire Strategy
Flood Risk and Drainage
Ground Investigation
Heritage
Landscape and Visual
- Figure L7 - Landscape Mitigation Area Planting Plan
- Figure L8 - Landscape and Habitat Strategy Plan
- Figure L9 -Landscape Plan
- Margam SuDS and Ditch Indicative Sections and Specification
- Margam Substation Landscape Visual Appraisal Addendum
- Margam Substation Landscape Visual Appraisal
Lighting Assessment
Noise
Peat Management
Piling Method
Planning and Design and Access Statement
- Application form for Margam Substation
- Design and Access Statement (DAS) Margam
- Green Infrastructure Statement
- Planning Statement
Siting Study
Sustainability
Transport Assessment