National Grid Electricity Transmission plc (National Grid) – Norwich to Tilbury

National Grid Electricity Transmission plc (National Grid) – Norwich to Tilbury 


We are emailing to inform you of the start of National Grid’s statutory consultation for Norwich to Tilbury (the “Project”). We are contacting you as we believe you may be interested in our proposals.


The consultation starts at 12:00 noon on Wednesday 10 April 2024 and runs until 11:59pm on Tuesday 18 June 2024.


The Project is a proposal by National Grid to upgrade the electricity transmission system in East Anglia between Norwich and Tilbury. The Project includes a new 400 kilovolt (“kV”) electricity transmission connection of approximately 184 kilometres (“km”) in overall length from Norwich Main Substation and Tilbury Substation via Bramford Substation, comprising:


  • approximately 159 km of new overhead line supported on approximately 510 steel lattice pylons (approximately 50 metres (“m”) in height) some of which are gantries (typically up to 15 m in height) within proposed Cable Sealing End (“CSE”) compounds or existing or proposed substations
  • approximately 25 km of 400 kV underground cabling some of which is located through the Dedham Vale National Landscape (formerly known as Dedham Vale AONB)
  • six new CSE compounds, each with a permanent access, to connect the overhead lines to the underground cables
  • a new 400 kV East Anglia Connection Node (“EACN”) substation, with a new permanent access, on the Tendring Peninsula. This is proposed to be an Air Insulated Switchgear (“AIS”) substation
  • substation extension works at the existing Norwich Main and Bramford substations and works within the existing Tilbury Substation to connect and support operation of the new transmission connection
  • temporary works associated with the construction of the Project.


An alternative design at the Waveney Valley (referred to as the Waveney Valley Alternative) is also being considered and is the subject of consultation and ongoing assessment. This design alternative, if taken forward, would result in changes to those elements of the Project set out below. This would instead comprise:


  • installation of approximately 157 km of new 400 kV overhead line
  • installation of approximately 27 km of 400 kV underground cabling (some of which is located through the Dedham Vale National Landscape)
  • eight new CSE compounds (each with a permanent access) to connect the overhead lines to the underground cables.


All other works not listed above would be consistent with either alternative.


In other words, the Waveney Valley Alternative, if taken forward and based on the 2024 preferred draft alignment would comprise approximately 2 km less new 400 kV overhead line and approximately an additional 2 km of 400kV underground cabling and two additional new CSE compounds, each with a permanent access, to connect the overhead lines to the underground cables.


Third party utilities diversions and / or modifications would also be required to facilitate the construction of the Project. There would also be land required for mitigation, compensation and enhancement of the environment including Biodiversity Net Gain.


As well as the permanent infrastructure, land would also be required temporarily for construction activities including for example working areas for construction equipment and machinery, site offices, welfare, storage and temporary construction access.


Norwich to Tilbury will play a vital role in delivering electricity efficiently, reliably, and safely and will support the UK’s move to reduce carbon emissions and we are committed to working with local communities as we develop our plans.


National Grid expects the Project to be classified as a Nationally Significant Infrastructure Project (“NSIP”) and to require consent from the Secretary of State for Energy Security & Net Zero via a Development Consent Order (“DCO”). The development consent being sought will include a number of other provisions, including those which authorise the compulsory acquisition of land and rights over land, if necessary, to construct and maintain the Project.


Statutory consultation


The proposed Project is an Environmental Impact Assessment (“EIA”) development, as defined by the Infrastructure Planning (Environmental Impact Assessment) Regulations 2017 (as amended) (“EIA Regulations”).  As part of the consultation, we are seeking views on the potential environmental effects of the proposals and if consultees have suggestions for reducing these effects (for example, through mitigation measures). This information is detailed in the Preliminary Environmental Information Report (“PEIR”). An Environmental Statement will be prepared subsequently in accordance with the EIA Regulations and will accompany the application for development consent.


The Project is currently in the pre-application stage of the DCO application process. As such, the Project is consulting on its proposals between 12:00 noon on Wednesday 10 April and 11:59pm on Tuesday 18 June 2024.


Supporting materials 


National Grid (as required by the Planning Act 2008) has prepared a Statement of Community Consultation (“SoCC”) which sets out how it will undertake the statutory consultation for the proposed application with those people living and working in the vicinity of the Project.  The SoCC is available to view on the Project website: and at the inspection points listed further down in this letter.


A copy of the full suite of consultation documents is available to view on the Project website from 12:00 noon on Wednesday 10 April 2024 until 11:59pm on Tuesday 18 June 2024.

These include:  

  • Project Background Document
  • Community Newsletter 2024
  • Feedback questionnaire
  • Copy of the newspaper notice published under Section 48 of the Planning Act 2008 (as the Project is ‘EIA Development’ for the purposes of the EIA Regulations and as required by Regulation 4 of the Infrastructure Planning (Applications and Prescribed Forms and Procedure) Regulations 2009 (as amended))
  • Preliminary Environmental Information Report (“PEIR”) and non-technical summary (“NTS”) of the PEIR
  • Project maps/Project area maps showing the extent of the Project
  • Statement of Community Consultation (“SoCC”).


Copies of consultation materials and documents can be provided on request by contacting us either by email at or by telephone 0800 915 2497.


Public information events


During the consultation a series of face-to-face public information events will be held where you can speak with the Project team.


You can attend any of our events to meet the Project team, ask questions and view more details of the Project:

Date and time Venue
Wednesday 24 April 2024 12pm-5pm Towngate Theatre, St Martin’s Square, Basildon, Essex
SS14 1DL
Thursday 25 April 2024 2pm-7pm The Brentwood Centre, Doddinghurst Road, Pilgrims Hatch, Brentwood, CM15 9NN
Saturday 27 April 2024 11am-4pm Chelmsford City Racecourse, Chelmsford, CM3 1QP
Tuesday 30 April 2024 12pm-5pm Gislingham Village Hall, Mill Street, Gislingham, IP23 8JT
Wednesday 1 May 2024 11am-4pm Copdock Village Hall, Old London Road, Copdock, IP8 3JN
Friday 3 May 2024 1pm-6pm Needham Market Community Centre, School St, Needham Market, Ipswich IP6 8BB
Saturday 4 May 2024 11am-4pm Lawford Venture Centre 2000, Bromley Road, Lawford, Manningtree CO11 2JE
Wednesday 8 May 2pm-7pm The Civic Hall, Blackshots Lane, Grays, RM16 2JU
Thursday 9 May 2024 1pm-6pm Thorpe Hall, Ashwell Thorpe and Fundenhall Community Centre, Muskett Road, Ashwellthorpe, NR16 1FD
Friday 10 May 2024 1pm-6pm Tibenham Community Hall, Pristow Green Lane, Tibenham, Norwich NR16 1PX
Tuesday 14 May 2024 11am-4pm Witham Public Hall, Collingwood Road, Witham, CM8 2DY
Wednesday 15 May 2024 1pm-6pm Diss Town Football Club, Diss, IP22 4QP
Thursday 16 May 2024 2pm-7pm Langham Community Centre, School Road, Langham, Colchester, CO4 5PA
Friday 17 May 2024 1pm-6pm Great Bromley Village Hall, Parsons Hill, Great Bromley, Colchester, CO7 7JA


Printed copies of the consultation materials will be made available at consultation events for attendees to review. Attendees will also be able to take away copies of the Project Background Document and Feedback questionnaire.


In addition to being available online, the Community Newsletter, Project Background Document, non-technical summary (“NTS”) of the Preliminary Environmental Information Report (“PEIR”), Statement of Community Consultation (“SoCC”) and Feedback questionnaire will be available to view free of charge at the following inspection points throughout the consultation period.

Location  Address Opening hours
Long Stratton Library The Street

Long Stratton

NR15 2XJ

Monday – 11am-7pm
Tuesdays – 1pm-7pm
Wednesday – 8am-7pm (unstaffed)
Thursday – 1pm-7pm
Friday – 8am-7pm (unstaffed)
Saturday – 11am-4pm
Sunday – 10am-4pm (unstaffed).


Norwich Library Unit 3

The Forum

Millenium Plain



Monday – Friday – 10am-7pm
Saturday – 9am-5pm


Tuckswood Library Robin Hood Road



Monday – 8am – 7pm (unstaffed)
Tuesday – 11am-7pm
Wednesday – 8am-7pm (unstaffed)

Thursday – 8am-7pm (unstaffed)
Friday – 11am-7pm
Saturday – 10am-4pm
Sunday – 10am-4pm (unstaffed).

Diss Library Church Street


IP22 4DD

Monday – 10am-7pm
Tuesday – 8am-7pm
Wednesday – 10am-7pm
Thursday – 10am-7pm
Friday – 10am-7pm
Saturday – 10am-7pm
Sunday – 10am-4pm
Stowmarket Library Milton Road


IP14 1EX

Monday – Closed
Tuesday – 8.30am-6.45pm
Wednesday – 8.30am-5.45pm
Thursday – 8.30am-5.45pm
Friday – 8.30am-6.30pm
Saturday – 8.30am-4pm
Sunday – 10am-4pm.
Capel St Mary Library Village Hall

The Street

Capel St Mary


Monday – Closed
Tuesday – 9am-12.30pm, 2pm-5.30pm
Wednesday and Thursday – 9am-12.30pm
Friday – 2pm-5.30pm
Saturday – 9am-3pm
Sunday – 10am-3pm.
Coggeshall Library The Friends Meeting House

Stoneham Street



Monday – Closed
Tuesday – 2pm-5.30pm
Wednesday – Closed
Thursday – 9am-5.30pm
Friday – Closed
Saturday – 9am-5pm
Sunday – Closed.
Chelmsford Library Market Road



Monday – 9am-5.30pm
Tuesday – 9am-5.30pm
Wednesday – 9am-5.30pm
Thursday – 9am-7pm
Friday – 9am-5.30pm
Saturday – 9am-5pm
Sunday – 10.30am-1.30pm
Colchester Library Trinity Square



Monday – 9am-5.30pm
Tuesday – 9am-5.30pm
Wednesday – 9am-7pm
Thursday – 9am-5.30pm
Friday – 9am-5.30pm
Saturday – 9am-5pm
Sunday – 1pm-4pm
Tilbury Library Civic Square


RM18 8AD

Monday – 10am-1pm and 2pm-5pm
Tuesday – Closed
Wednesday – 10am-1pm and 2pm-5pm
Thursday – Sunday – Closed
Greenstead Library Hawthorn Avenue



Monday – 9am-5.30pm
Tuesday – 9am-5.30pm
Wednesday – Closed
Thursday – 9am-5.30pm
Friday – Closed
Saturday – 9am-5pm
Sunday – Closed
Stanway Library 10 Villa Road



Monday – Closed
Tuesday – 2pm-7pm
Wednesday – Closed
Thursday – 9am-1pm
Friday – Closed
Saturday – 9am-1pm
Sunday – Closed
Prettygate Library Prettygate Road



Monday – Closed
Tuesday – 9am-7pm
Wednesday – 9am-5.30pm
Thursday – Closed
Friday – 9am-5.30pm
Saturday – 9am-5pm
Sunday – Closed
Wivenhoe Library 104/6 High Street



Monday – Closed
Tuesday – 2pm-7pm
Wednesday – Closed
Thursday – 9am-5.30pm
Friday – Closed
Saturday – 9am-5pm
Sunday – Closed


Prior to attending these locations, it is advised opening times are checked.


In addition to the public information events, we will be holding six webinars, where members of the Project team will be available to answer questions. The dates and times of these sessions are as follows:

Date and time Webinar 
Wednesday 17 April 6pm-7pm Project Overview One*
Wednesday 29 May 6pm-7pm Section A and B – South Norfolk and Mid Suffolk
Thursday 30 May 6pm-7pm Section C and D – Babergh, Tendring and Colchester
Wednesday 5 June 6pm-7pm Section E and F – Braintree and Chelmsford
Thursday 6 June 6pm-7pm Section G and H – Basildon, Brentwood and Thurrock
Wednesday 12 June 6pm-7pm Project Overview Two

* A British Sign Language interpreter will be available.


You can register for a webinar by signing up on our Project website:


Responding to the Consultation


Responses to this consultation must be received between 12:00 noon on Wednesday 10 April 2024 and 11:59pm on Tuesday 18 June 2024.


Responses to this consultation can be submitted online at


Alternatively, you can return a printed copy of the Feedback questionnaire or a free text response via email: or post: FREEPOST N TO T (please write this in capitals, you do not need a stamp).


Requests for paper copies of the technical documents will be reviewed on a case by-case basis. To cover printing costs a reasonable copying charge may apply, to be paid for by the recipient and up-to a maximum value of £500 for the whole suite of consultation documents. Please get in touch with us using the details below if you would like a printed or alternative format copy of materials.


Telephone: 0800 915 2497.




Following the close of the consultation all feedback will be collated, reviewed and analysed to understand key themes and concerns.  Our proposals will be reviewed and, where practicable, refined in light of feedback.


We may be required to make copies of representations available to the Secretary of State. However, we will request that personal details are not placed on the public record.  Personal details will be held securely in accordance with the relevant data protection legislation and will be used solely in connection with the consultation process and the development of this Project and, except as noted above, will not be disclosed to any third parties. National Grid’s privacy policy can be found on its website:


If you have any questions about the Project, please don’t hesitate to contact us at the above freephone, freepost or email address.


We look forward to hearing from you.

Yours faithfully


Liam Walker

Project Director