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Planning application

P2025/0817

Margam Substation Margam SA13 3NF

Granted Neath Port Talbot Full Plans

Proposal

Full planning application for the extension of the Margam 275kV substation including the erection of a gas insulated switchgear hall (GIS hall) and the demolition of the existing control and amenities buildings to enable the erection of a new amenities building. Works to also include earthworks, surface water management and drainage infrastructure, lighting, CCTV, boundary treatment, car parking, ecological improvements including a wildlife tower and gabion baskets, improved internal access roads, diesel generator and hardstanding, storage building and water storage tank, flood defence wall including flood gates and appropriate landscaping and other associated engineering operations.

As published by the council, reference P2025/0817

Timeline

Dates from the published record

  1. 19 Nov 2025

    Received by Neath Port Talbot

  2. 20 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 17 Apr 2026

    Decision issued: Permitted

  4. 28 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within five years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • P2026/0329 Granted

    Margam Substation Margam Neath Port Talbot SA13 3NF

    Details to be agreed in association with condition 4 (a landscape and habitat management programme) of application P2025/0817 granted on the 21/05/2026.

    21 May 2026 0m away Conditions

In Neath Port Talbot

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