Document library

On this page you can find all the materials we have produced for current and historic consultations on EGL 3 and EGL 4, including the information published as part of our ongoing stage 2 consultation. 

For our stage 2 consultation, many of these documents will also be available to view in-person at our public information events and at local information points - for more information see our Have your say page.

    2025 stage 2 consultation documents 

    In this section you can view the key documents published as part of our stage 2 consultation. We encourage you to provide feedback after reading our Stage 2 consultation document, which outlines our proposals. 

    More detailed information, including preliminary environmental information and plans, can be found using the menu at the side of the page.

    A printable copy of the Feedback form is available to download from this page. You can also submit your feedback online.  

    Guide to Consultation Documents and Drawings 
    Stage 2 consultation document
    Feedback form 
    Consultation newsletter 
    Consultation banners
    Consultation banners - the Great Grid Upgrade in the region
    Statement of Community Consultation (SoCC)
    Converter Station Design - Background to potential architectural design approaches 
    Soils and Drainage Leaflet 
    Design Development Report 
    Strategic Options Report Update
    Section 47 Notice
    Section 48 Notice
    Non-statutory Consultation Feedback Report 
    Non-statutory Consultation Feedback Report Appendix A
    Non-statutory Consultation Feedback Report Appendix B
    Non-statutory Consultation Feedback Report Appendix C
    Non-statutory Consultation Feedback Report Appendix D

     

    2025 stage 2 consultation Preliminary environmental information report (PEIR)

    In this section you can view our Preliminary environmental information report (PEIR), which considers the likely significant effects of our proposals on the environmental, along with the measures we are proposing to avoid, reduce or mitigate these impacts. The PEIR has been split into several chapters, along with figures and appendices. 

    You can also read a shorter Non-technical summary of the PEIR (PDFs below) as well as a Digital Non-technical summary of the PEIR which can be found here.

    Non-technical summary of the PEIR
    Non-technical summary of the PEIR - Figures
    Part 1, Chapter 1 Introduction
    Volume 1, Part 1, Chapter 1 Introduction
    Volume 2, Part 1, Appendix 1.1.A Scoping Opinion Responses
    Volume 3, Part 1, Chapter 1 Figures
    Part 1, Chapter 2 Regulatory and Policy Overview
    Volume 1, Part 1, Chapter 2 Regulatory and Policy Overview
    Volume 2, Part 1, Appendix 1.2.A Regulatory and Planning Context
    Volume 2 Part 1 Appendix 1.2.B Marine Plan Assessments
    Part 1, Chapter 3 Reasonable Alternatives Considered
    Volume 1, Part 1, Chapter 3 Reasonable Alternatives Considered
    Volume 3, Part 1, Chapter 3 Figures
    Part 1, Chapter 4 Description of the Projects
    Volume 1, Part 1, Chapter 4 Description of the Projects
    Volume 2, Part 1, Appendix 1.4.A Electromagnetic Field (EMF) Study
    Volume 2, Part 1, Appendix 1.4.B EGL 3 Heat Calculations
    Volume 2, Part 1, Appendix 1.4.C EGL 4 Heat Calculations
    Volume 3, Part 1, Chapter 4 Figures
    Part 1, Chapter 5 PEIR Approach and Methodology
    Volume 1, Part 1, Chapter 5 PEIR Approach and Methodology
    Volume 2, Part 1, Appendix 1.5.A Outline Register of Design Measures
    Volume 2, Part 1, Appendix 1.5.B Outline Code of Construction Practice
    Volume 2, Part 1, Appendix 1.5.C Outline Construction Environmental Management Plan
    Part 2, Chapter 6 Biodiversity
    Volume 1, Part 2, Chapter 6 Biodiversity
    Volume 2, Part 2, Appendix 2.6.A International Statutory Designated Sites
    Volume 2, Part 2, Appendix 2.6.B National and Local Statutory Designated Sites
    Volume 2, Part 2, Appendix 2.6.C Non-statutory Designated Sites
    Volume 2, Part 2, Appendix 2.6.D Protected and Priority Species Records within 2 km Summary
    Volume 3, Part 2, Chapter 6 Figures
    Part 2, Chapter 7 Cultural Heritage
    Volume 1, Part 2, Chapter 7 Cultural Heritage
    Volume 2, Part 2, Appendix 2.7.A Cultural Heritage Scoping Response
    Volume 2, Part 2, Appendix 2.7.B Cultural Heritage Baseline
    Volume 2, Part 2, Appendix 2.7.C Cultural Heritage Gazetteer
    Volume 2, Part 2, Appendix 2.7.D Cultural Heritage Non-significant impacts
    Volume 3, Part 2, Chapter 7 Figures
    Part 2, Chapter 8 Landscape and Visual Amenity
    Volume 1, Part 2, Chapter 8 Landscape and Visual Amenity
    Volume 2, Part 2, Appendix 2.8.A Landscape and Visual Methodology
    Volume 2, Part 2, Appendix 2.8.B Landscape Character Baseline
    Volume 2, Part 2, Appendix 2.8.C Preliminary Visual Baseline and Assessment
    Volume 3, Part 2, Chapter 8 Figures
    Part 2, Chapter 9 Water Environment
    Volume 1, Part 2, Chapter 9 Water Environment
    Volume 2, Part 2, Appendix 2.9.A Water Environment Baseline Data
    Volume 2, Part 2, Appendix 2.9.B WFD Technical Note Stage 1
    Volume 2, Part 2, Appendix 2.9.C Site Walkover Survey Notes and Photos
    Volume 2, Part 2, Appendix 2.9.D Water Environment Design Principles
    Volume 2, Part 2, Appendix 2.9.E Preliminary Watercourse Crossing Schedule
    Volume 2, Part 2, Appendix 2.9.E Figures
    Volume 3, Part 2, Chapter 9 Figures
    Part 2, Chapter 10 Geology and Hydrogeology
    Volume 1, Part 2, Chapter 10 Geology and Hydrogeology
    Volume 3, Part 2, Chapter 10 Figures
    Part 2, Chapter 11 Agriculture and Soils
    Volume 1, Part 2, Chapter 11 Agriculture and Soils
    Volume 3, Part 2, Chapter 11 Figures
    Part 2, Chapter 12 Traffic and Transport
    Volume 1, Part 2, Chapter 12 Traffic and Transport
    Volume 2, Part 2, Appendix 2.12.A Traffic and Transport - Scoping Opinion Response
    Volume 2, Part 2, Appendix 2.12.B Traffic and Transport – Baseline Conditions
    Volume 2, Part 2, Appendix 2.12.C Traffic and Transport – Preliminary Construction Phase Traffic Flows
    Volume 2, Part 2, Appendix 2.12.D Traffic and Transport - Preliminary Construction Phase Effects
    Volume 3, Part 2, Chapter 12 Figures
    Part 2, Chapter 13 Noise and Vibration
    Volume 1, Part 2, Chapter 13 Noise and Vibration
    Volume 2, Part 2, Appendix 2.13.A Construction Plant Assumptions
    Volume 3, Part 2, Chapter 13 Figures
    Part 2, Chapter 14 Air Quality
    Volume 1, Part 2, Chapter 14 Air Quality
    Volume 2, Part 2, Appendix 2.14.A Construction Dust Assessment and Methodology
    Volume 2, Part 2, Appendix 2.14.B Air Quality Monitoring
    Volume 3, Part 2, Chapter 14 Figures
    Part 2, Chapter 15 Socio-economics, Recreation and Tourism
    Volume 1, Part 2, Chapter 15 Socio-economics, Recreation and Tourism
    Volume 2, Part 2, Appendix 2.15.A Socio-economics, Recreation and Tourism Receptors
    Volume 3, Part 2, Chapter 15 Figures
    Part 2, Chapter 16 Health and Wellbeing
    Volume 1, Part 2, Chapter 16 Health and Wellbeing
    Volume 3, Part 2, Chapter 16 Figures
    Part 3, Chapter 17 Designated Sites
    Volume 1, Part 3, Chapter 17 Designated Sites
    Volume 2, Part 3, Appendix 3.17.A Project Marine Conservation Zone (MCZ) Assessment Screening
    Volume 2, Part 3, Appendix 3.17.A Figures
    Volume 2, Part 3, Appendix 3.17.B MCZ Stage 1 Assessment
    Volume 2, Part 3, Appendix 3.17.B Figures
    Volume 2, Part 3, Appendix 3.17.C In-principal MEEB Strategy
    Part 3, Chapter 18 Coastal and Marine Physical Processes
    Volume 1, Part 3, Chapter 18 Coastal and Marine Physical Processes
    Volume 2, Part 3, Appendix 3.18.A Fine Sediment Modelling Spreadsheet
    Volume 2, Part 3, Appendix 3.18.B Wave Modelling
    Volume 3, Part 3, Chapter 18 Figures
    Part 3, Chapter 19 Intertidal and Subtidal Benthic Ecology
    Volume 1, Part 3, Chapter 19 Intertidal and Subtidal Benthic Ecology
    Volume 3, Part 3, Chapter 19 Figures
    Part 3, Chapter 20 Fish and Shellfish
    Volume 1, Part 3, Chapter 20 Fish and Shellfish
    Volume 2, Part 3, Appendix 3.20.A DATRAS Survey Results
    Volume 3, Part 3, Chapter 20 Figures
    Part 3, Chapter 21 Intertidal and Offshore Ornithology
    Volume 1, Part 3, Chapter 21 Intertidal and Offshore Ornithology
    Volume 2, Part 3, Appendix 3.21.A Supporting Information: Intertidal and Offshore Ornithology
    Volume 3, Part 3, Chapter 21 Figures
    Part 3, Chapter 22 Marine Mammals and Marine Reptiles
    Volume 1, Part 3, Chapter 22 Marine Mammals and Marine Reptiles
    Volume 2, Part 3, Appendix 3.22.A Underwater Noise Assessment
    Volume 3, Part 3, Chapter 22 Figures
    Part 3, Chapter 23 Shipping and Navigation
    Volume 1, Part 3, Chapter 23 Shipping and Navigation
    Volume 2, Part 3, Appendix 3.23.A Navigation Risk Assessment
    Volume 2, Part 3, Appendix 3.23.A Figures
    Volume 3, Part 3, Chapter 23 Figures
    Part 3, Chapter 24 Commercial Fisheries
    Volume 1, Part 3, Chapter 24 Commercial Fisheries
    Volume 2, Part 3, Appendix 3.24.A Supporting Commercial Fisheries Information
    Volume 2, Part 3, Appendix 3.24.B Fisheries Liaison and Coexistence Plan (FLCP)
    Volume 3, Part 3, Chapter 24 Figures
    Part 3, Chapter 25 Other Marine Users
    Volume 1, Part 3, Chapter 25 Other Marine Users
    Volume 3, Part 3, Chapter 25 Figures
    Part 3, Chapter 26 Marine Archaeology

    Volume 1, Part 3, Chapter 26 Marine Archaeology

    Volume 2, Part 3, Appendix 3.26.A Offshore Written Scheme of Investigation and Protocol for Archaeological Discoveries
    Volume 2, Part 3, Appendix 3.26.B Gazetteer of UKHO and Heritage Records
    Volume 2, Part 3, Appendix 3.26.C Gazetteer of Geophysical Anomalies

    Volume 2, Part 3, Appendix 3.26.D Gazetteer of Sea Level Index Points

    Volume 3, Part 3, Chapter 26 Figures

    Part 4, Chapter 27 Greenhouse Gas
    Volume 1, Part 4, Chapter 27 Greenhouse Gas
    Part 4, Chapter 28 Cumulative Effects
    Volume 1, Part 4, Chapter 28 Cumulative Effects
    Volume 2, Part 4, Appendix 4.28.A Long List of other Developments
    Volume 3, Part 4, Chapter 28 Figures

    2025 stage 2 consultation videos 

    In this section you can watch animations that provide an indicative overview of how National Grid builds new infrastructure. 

    DCO Process 
    Converter station construction 
    HDD under rivers and roads
    Subsea cable installation
    How we install cables onshore


     

    Community updates 

    Community Update - January 2025

     

    Overview and section maps 

    Section maps

     

    2024 stage 1 consultation interactive map

    View interactive map

    Having trouble accessing them or require assistance with navigating our plans? Then contact us directly on 0800 298 0405 or at [email protected] and we can help.