Lincolnshire - Notice of Publication of a Statement of Community Consultation

NATIONAL GRID ELECTRICITY TRANSMISSION PLC

SECTION 47 OF THE PLANNING ACT 2008 (AS AMENDED) GRIMSBY TO WALPOLE PROJECT

NOTICE OF PUBLICATION OF A STATEMENT OF COMMUNITY CONSULTATION

1. Notice is hereby given that National Grid Electricity Transmission plc (“National Grid”) of 1 – 3 Strand, London, WC2N 5EH intends to apply to the Secretary of State for Energy Security and Net Zero for a Development Consent Order (“DCO”) under Section 47 of the Planning Act 2008 (as amended) (the “Act”) to authorise the construction and operation of Grimsby to Walpole (the “Project”).

2. The Project is a proposal by National Grid to upgrade the electricity transmission system between new substations near Grimsby and Walpole. The Project includes a 400 kilovolt (“kV”) electricity transmission connection of approximately 140 kilometres (“km”) in overall length between two proposed new substations, Grimsby West 400 kV Substation and Walpole B 400kV Substation.

3. National Grid has previously consulted on proposals for Grimsby to Walpole, including a statutory consultation which ran between 11 June and 06 August 2025. This targeted statutory consultation presents the detailed proposals for infrastructure within Route section 5 – New Weston Marsh Substations A and B.

4. The construction of two new 400 kV substations (referred to as Weston Marsh Substation A and Weston Marsh Substation B) are proposed within Route section 5:

• a new Weston Marsh Substation A providing a 400 kV AIS substation with connection for up to twenty bays and associated works on land east of Marsh Road; and

• a new Weston Marsh Substation B providing a 400kV AIS substation located north of Stone Gate with up to fourteen bays.

5. A series of works to the Overhead Lines (OHL) and underground cables are also proposed within Route section 5:

• diversion of approximately 2.8 km of existing OHLs to connect into the Weston Marsh Substation A and the Weston Marsh Substation B;

• reconductoring of approximately 1.1 km of OHLs from twin to triple conductors;

• diversion of approximately 2.1 km of existing OHLs to connect into the Weston Marsh Substation B;

• dismantling of approximately 3.6 km of the existing OHLs;

• repurposing of a 1.7 km section of the existing OHLs to form part of new 400 kV overhead line connection between the Weston Marsh Substation A and the new Walpole Substation B;

• temporary diversions of approximately 1.4 km of existing OHLs during the construction works; and

• an approximately 3.05 km long section of new 400 kV underground cable from the Weston Marsh Substation A continuing in a south direction to the Weston Marsh Substation B.

6. The Project will seek authorisation for the compulsory acquisition of land and interests in and rights over land, overriding easements and other rights, the temporary use of land, and other ancillary powers.

7. The Project is an Environmental Impact Assessment (“EIA”) development, as defined by The Infrastructure Planning (EIA) Regulations 2017. An Environmental Statement will therefore be submitted as part of the application, which will contain information about the environmental effects of the Project.

8. Under Section 47 of the Planning Act 2008, National Grid has a duty to consult the community on its proposals. The Statement of Community Consultation explains how National Grid will undertake the consultation, where the consultation documents can be viewed, where public events will be held and how people can comment on the proposals and provide responses to the consultation. This targeted consultation will be undertaken in accordance with, and proportionate to, the principles outlined in the Statement of Community Consultation.

9. The consultation will take place between noon on Tuesday 18 November and 11.59PM on Friday 19 December 2025. Between those dates the Statement of Community Consultation, the Weston Marsh targeted consultation approach document, and other consultation materials will be available to view free of charge on the Project’s website at: https://www.nationalgrid.com/the-great-grid-upgrade/grimsby-to-walpole

10. Reference copies of the Statement of Community Consultation, the Weston Marsh targeted consultation approach document, and other consultation materials will also be available to view free of charge from Tuesday 18 November 2025 for the duration of the consultation at the following locations in the vicinity of the Project:

If you have any questions about the Project or the consultation or to request a printed or alternative format copy of the SoCC, please contact the Project team on the details below:

• Email: contact@g-w.nationalgrid.com

• Telephone: 0808 258 4395

• Freepost: FREEPOST G TO W (please write this in capitals, you do not need a stamp)

Notice first published on Tuesday 18 November 2025