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Other documents

The documents below supported our October 2016 consultation.

Our proposals have been reviewed and updated since this time. We submitted our application in September 2018. You can view all of the documents in our application on the Planning Inspectorate’s website.

The Navigation Document  provides a description of all documents and reports contained within the application.

Community documents

Community documents

1.1 Project News: provides the headlines of our proposals and includes a large map.

1.2 Overview: provides an overview of the project and information on what we propose in each area. It includes pages on different sections of our proposals so you can easily identify which parts of our work are of most interest to you. It also includes visualisations to show what our proposals could look like. 

1.3 Q&A: gives a list of the most frequent questions and our responses to them.  

West Gwynedd Project News - October 2016

Community Update Spring 2017 - How your feedback helps us. We’ve sent our community bulletin to people who took part in last year's consultation. If you’d like a copy, please contact our community relations team on 0800 990 3567.

Updates to construction traffic routes: We’re currently assessing feedback we received to updates to construction traffic routes we plan to use while constructing the second connection. This feedback will help us finalise our construction traffic routes ahead of submitting our application to the Planning Inspectorate in the autumn.

Project News Summer 2018 - Feedback continues to shape pylon and tunnel plans


2.1 Preferred Route Option Selection Report

for selecting the preferred route option (a route corridor about 100m
wide within which the pylons will be sited) in sections A-D of the route.
This includes information on the feedback considered, the further
appraisals undertaken and the main reasons for the selection of the
option. It also describes the reasons why the chosen lattice steel pylon
design is being proposed.

2.2 Draft Route Alignment Report

2.2 Draft Route Alignment Report: explains the rationale for the design of the proposed new overhead line in sections A-D of the route. This includes details on factors that have been considered, the overall design approach and decisions on how each pylon location has been identified. It discusses the design of both the permanent and temporary construction works.

2.3 Menai Strait Crossing Report

2.3 Menai Strait Crossing Report: to explain the options considered for crossing the Menai Strait (sections E-F of the route), the options assessment undertaken and the selection of the preferred option. This includes information on siting of tunnel head houses, sealing end compounds and other supporting works required for the transitions from overhead to underground, together with the two sections of overhead line that link to the sealing end compounds.

2.4.1 - 2.4.2 Preliminary Environmental Information Report (PEIR)

We undertake environmental surveys and assessments and prepare reports as we develop our proposals.
For this consultation, the findings of our assessments up to now are set out in a Preliminary Environmental Information Report (PEIR). 
The PEIR explains our preliminary assessment of the likely effects the proposed project would have on the environment and the measures we are proposing to limit these effects where we can, based on our assessments to date.
2.4.2 PEIR (the main report)

2.4.3 PEIR Figures

2.4.4 PEIR Appendices

2.4.5 PEIR Photomontages

2.5 Strategic Options Report

2.5 Strategic Options Report: explains the connection options looked at.

2.6 Project Need Case, 2016

2.6 Project Need Case, 2016: explains why the North Wales Connection
project and the work we have to carry out is needed.

2.7 Project Glossary

2.7 Project Glossary: provides an expansion on, and explanation of, the
terms used across all documents published for last year's consultation.


3.1 Works Plans

3.1 Works Plans: these show the proposed route for the second connection and the proposed project boundary within which we propose to build the connection.

3.2 Land Plans

3.2 Land Plans: show the land use within the proposed project boundary.

3.3 Land Affected Plans

3.3 Land Affected Plans: show the proposed project boundary and land
affected by the proposed design for the second connection.

3.4 Crown and Special Category Land Plans

3.4 Crown and Special Category Land Plans: show the proposed project boundary and affected special category land such as common land, and land owned by special bodies such as the National Trust.

3.5 Access and Rights of Way Plans

3.5 Access and Rights of Way Plans: show our proposed access points
and public rights of way that may be affected by our proposals.

3.6 Sites or Features of Nature Conservation, Habitats and Water Bodies Plans

3.6 Sites or Features of Nature Conservation, Habitats and Water Bodies Plans: show areas of particular environmental importance including areas that are important for nature conservation or are protected habitats in the vicinity of our proposals.

3.7 Sites or Features of Historic Environment Plans

3.7 Sites or Features of Historic Environment Plans: show areas of particular environmental importance including important historical areas in the vicinity of our proposals.

3.8 Other Environmental Features Plans

3.8 Other Environmental Features Plans: show other areas of particular environmental importance in the vicinity of our proposals.

3.9 Trees and Hedges Potentially Affected Plans

3.9 Trees and Hedges Potentially Affected Plans: show the trees and hedges which may be affected by our proposals.

3.10 Design Plans

3.11 Consultation Plans

3.11 Consultation Plans: these show the most detail of our proposals. They show the proposed project boundary within which we propose to build the connection; this includes all associated permanent and temporary works, including pylon positions, conductor pulling positions and access roads.

3.12 A guide to the plans:

3.12 A guide to the plans: provides a more detailed guide to what the plans show and how to read them, including a detailed explanation of the plan keys.

Our approach to consultation

4.1 Statement of Community Consultation (SoCC)

4.1 Statement of Community Consultation (SoCC): this describes how we propose to undertake a statutory pre-application consultation on the project with the local community (those living in the vicinity of the land) and other stakeholders. The SoCC enabled those potentially affected by the project to understand how we intended to consult and how they could participate in the consultation. It includes an explanation on the engagement activities we intend to undertake.
This document has been prepared in accordance with requirements of the Planning Act 2008 (as amended) and supported by the relevant local authorities.

Other useful documents

Other useful documents

Stage 2 Consultation Feedback Report - This report sets out our response to feedback received in relation to our Stage 2 consultation held in 2015.

Stage 2 Consultation Feedback Report: Executive Summary

The challenge of a subsea connection film, October 2015 explains the challenges of a subsea connection and why, after careful consideration, we're not taking this option forward

Information Booklet, January 2015 - explains how we looked at all of the options and made our route corridor decision

Agricultural and Farming Frequently Asked Questions- answers to common questions we are asked about farming, agriculture and how we work with landowners

A study into the effect of National Grid major infrastructure projects on socio-economic factors - an independent study to look at any effects our work has had on local businesses in the areas where we've built a new connection

National Grid and the electricity industry - our role in the electricity and how we operate the electricity network in Wales and England

Our approach to Options Appraisal - sets out how we compare options and assess the positive and negative impacts they may have

Our approach to the design and routeing of new electricity transmission lines - sets out how we identify the most appropriate location and technology for any new electricity transmission route

Our transmission infrastructure and its effect on local people, communities and the local economy - provdies information about how we consider local people and communities when developing new infrastructure projects

Overhead line construction/refurbishment - information on how we construct and refurbish overhead lines

The Holford Rules- guidelines we follow for the routeing of new high voltage overhead lines

The Horlock Rules - guidelines we follow for the siting of new substations

Undergrounding high voltage electricity transmission lines - the technical issues - information on the technical issues associated with underground high voltage transmission lines

National Grid’s commitments when undertaking works in the UK - Our stakeholder, community and amenity policy

Guidance on Lands Rights - factsheet explaining guidance on land rights for new electricity transmission assets (England and Wales)

Terminology - factsheet 

Installation of high voltage underground cables - factsheet

Environmental and engineering surveys - factsheet

Installation of gas pipelines - factsheet

Lands information

Lands information

Lands best practice guide - this document sets out our approach to good practice when we carry out work to install, maintain and operate equipment on land and what you as landowner/occupier can expect.

Lands Rights Strategy – information on payments schedule for new electricity transmission assets. 

Electric and Magnetic Fields (EMF) information

Electric and Magnetic Fields (EMF) information

Electric and Magnetic Fields - The Facts - provides more information about Electric and Magnetic Fields. 

Electric and Magnetic Fields – further explanation – detailed information on EMFs provided by The Energy Networks Association


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