Skip to main navigation

Our response to coronavirus

Find out how we're working to keep the lights on in Great Britain throughout COVID-19.
Read more
Home
ESO
  • ESO
  • Group PLC
  • NG in the UK
  • NG in the US
  • About us
  • Careers
  • Investors
  • Data Portal
  • News
  • Contact us
  • Back
  • Who we are
    • Back
    • Home
    • Who we are
    • What we do
    • Our people
    • How we're organised
    • Meet the board
  • Electricity explained
    • Back
    • Home
    • Electricity explained
    • Monthly Insights
    • Zero carbon explained
    • Carbon intensity explained
    • Electric cars explained
    • Power cuts explained
  • Future of energy
    • Back
    • Home
    • Future of energy
    • Future Energy Scenarios (FES)
    • Innovation
      • Back
      • Future of energy
      • Innovation
      • Strategy
      • News and events
      • Get involved
    • Projects
      • Back
      • Future of energy
      • Projects
      • Early Competition Plan
      • Offshore Coordination Project
      • Distributed ReStart
  • Industry information
    • Back
    • Home
    • Industry information
    • Connections
      • Back
      • Industry information
      • Connections
      • Our role in connections
      • The connections offer process
      • Your connections journey
      • Reports and registers
      • Use of System (UoS) and Virtual Lead Party (VLP)
      • Connections help and support
    • Balancing Services
      • Back
      • Industry information
      • Balancing Services
      • Frequency response services
      • Reserve services
      • System security services
      • Reactive power services
      • Trading
      • Settlements
      • Balancing Mechanism Wider Access
      • Get involved
    • Charging
      • Back
      • Industry information
      • Charging
      • Balancing Services Use of System (BSUoS) charges
      • Transmission Network Use of System (TNUoS) charges
      • Assistance for Areas with High Electricity Distribution Costs (AAHEDC)
      • Connection charges
      • Charging guidance
      • Charging policy developments
      • Charging statements
      • Submit a charging query
    • Codes Homepage
      • Back
      • Industry information
      • Codes Homepage
      • Connection and Use of System Code (CUSC)
      • Grid Code (GC)
      • System Operator Transmission Owner Code
      • Security and Quality of Supply Standard (SQSS)
      • Balancing Settlement Code (BSC)
      • European Network Codes (ENC)
      • Codes calendar
      • Code changes: Beginner's Guide
      • About the Codes Team
    • Industry Data and Reports
      • Back
      • Industry information
      • Industry Data and Reports
      • System Incidents Report
      • Balancing services performance monitoring report
      • Data finder and explorer
      • Forecast volumes and costs
      • GB Electricity System Operator Daily Reports
      • System balancing reports
      • Monthly transmission loss data (4l)
      • System constraints
      • Voltage costs
    • Keeping the lights on throughout coronavirus
    • Accelerated Loss of Mains applications
    • Our consultation responses
  • Our strategy
    • Back
    • Home
    • Our strategy
    • Forward Plan
      • Back
      • Our strategy
      • Forward Plan
      • How we're performing
    • Annual report and accounts
      • Back
      • Our strategy
      • Annual report and accounts
      • Annual report 2019/20
    • RIIO
      • Back
      • Our strategy
      • RIIO
      • RIIO-2 final business plan
      • Future planning 2021 onwards
      • Have your say on our future plan
      • RIIO-2 Stakeholder Group
  • Research & publications
    • Back
    • Home
    • Research & publications
    • Whole electricity system
    • Summer Outlook
    • Winter Outlook
    • ​Electricity Ten Year Statement (ETYS)
    • Network Options Assessment (NOA)
      • Back
      • Research & publications
      • Network Options Assessment (NOA)
      • Network Development Roadmap
    • System Operability Framework (SOF)
    • Future of balancing services
    • Transmission performance reports
    • Regional Development Programmes

Breadcrumb

  • Back to home

​Electricity Ten Year Statement (ETYS) Archive

We publish the ETYS annually in our role as the electricity system operator.

Go to the ETYS 2020

The ETYS is the ESO’s view of future transmission requirements and the capability of Great Britain’s National Electricity Transmission System (NETS).

Click here to go to the ETYS 2020

ETYS documents

Here, you can access previous EYTS reports and appendices.

202020192018201720162015201420132012System Requirements FormWebinars

2020

Name
Summary of the ETYS 2020
Appendix A – System Schematic and Geographic
Appendix B – System Network Data
Appendix C – Future Power Flows
Appendix D – Fault Level Narrative
Appendix D – Fault Level Data - Min
Appendix D – Fault Level Data - Peak
Appendix E – Spatial Transmission Level Data
Appendix H – Further Information in Inputs and Methodologies
Appendix I - Transmission Losses
ETYS System Requirements Form 2020
ETYS Half Year Update 2020
ETYS 2020 Structure
ETYS 2020 (Full Document)
14

2019

Name
Appendix A – System Schematic and Geographic
Appendix B – System Network Data
Appendix C – Future Power Flows
Appendix D – Fault Level Data - Min
Appendix D – Fault Level Data - Peak
Appendix D – Fault Level Narrative
Appendix E – Spatial Transmission Level Data
Appendix H – Further Information in Inputs and Methodologies
Appendix I - Transmission Losses
ETYS 2019
10

2018

Name Sort descending
Appendix A – System Schematic and Geographic
Appendix B – System Network Data
Appendix C – Future Power Flows
Appendix D – Fault Level Data
Appendix D – Fault Level Narrative
Appendix E – Spatial Distribution Level Data
Appendix E – Spatial Transmission Level Data
Appendix H – Further Information in Inputs and Methodologies
ETYS 2018
Half Year Update to ETYS 2018
10

2017

Name Sort descending
Appendix A - System Schematics and Geographic
Appendix B - System Network Data
Appendix C – Future Power Flows
Appendix D – Fault Level Data
Appendix D – Fault Level Narrative
Appendix E - Spatial Data Summary Narrative
Appendix E - Spatial Distribution Level Data
Appendix E - Spatial Transmission Level Data
ETYS 2017
ETYS 2017 Updated
Half Year Update to 2017 ETYS
11

2016

Name Sort descending
Half-year update to 2016 ETYS
ETYS 2016
ETYS 2016 Appendix A
ETYS 2016 Appendix B
ETYS 2016 Appendix C
ETYS 2016 Appendix D
ETYS 2016 Appendix D Data
7

2015

Published Sort ascending Name
29 Apr 2016Appendix A1 System Schematics
20 Apr 2016Appendix B System Technical Data
8 Feb 2016Appendix C Power Flow Diagrams
1 Feb 2016Appendix D Fault Level Data
25 Jan 2016Appendix D1 Fault Level Intro
15 Jan 2016Appendix E Technology
1 Jan 2016Appendix F Generation Data
1 Dec 2015Appendix G demand data
30 Nov 2015Appendix H Transmission Losses
30 Nov 2015ETYS 2015 for Web
10

2014

Name Sort descending
ETYS 2014
ETYS 2014 Appendix A1_1 GB Power station map
ETYS 2014 Appendix A1_2 GB Existing Transmission System map
ETYS 2014 Appendix A1_3 to A1_6 - GB Existing Transmission System - Schematic
ETYS 2014 Appendix B - System data
ETYS 2014 Appendix C - Power Flow Diagram
ETYS 2014 Appendix D - Fault level data
ETYS 2014 Appendix E - Technology
ETYS 2014 Appendix F - Generation data
9

2013

Name Sort descending
Appendix A1 - Geographic System Maps
Appendix A2 - Schematic System Maps
Appendix B - System Data
Appendix C - Power Flow Diagrams
Appendix D - Fault Level Data
Appendix D - Fault Levels - Final
Appendix E - Technology
Appendix F - Generation Data
Electricity Ten Year Statement 2013
END ECMP team
Transmission Electricity Customer Service Team
11

2012

Name Sort descending
Appendix A1 - General System Maps
Appendix A2 - Slow Progression System Maps
Appendix A3 - Gone Green System Maps
Appendix A4 - Accelerated Growth System Maps
Appendix B - System Data
Appendix C - Power Flow Diagrams
Appendix D - Fault Levels
Appendix E - Technology
Appendix F - Generation Data
Appendix G - NDP Example
Chapter 2
Chapter 3
Chapter 4
ETYS 2012 Document
14

System Requirements Form

Name
ETYS System Requirements Form 2019
ETYS System Requirements Form 2020
2

Webinars

Name
ETYS Webinar 19 February 2020 slides
1
National Grid ESO
© National Grid 2021

Connect with us

  • Twitter
  • LinkedIn
  • Youtube
  • Connect with us
    • Media centre
    • Work for us
  • About us
    • Compliance Statements
  • Privacy policy
    • Cookie policy
    • Terms and conditions
    • Security
    • Modern Slavery Statement
© National Grid 2021
Top