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

Data explorer

On this page, you will find data we've published relating to the commercial operation of the National Electricity Transmission System (NETS). This data includes cost and volume forecasts, and outcomes relating to balancing services, reserve, and response. We also include information associated with contract and services reports, showing the costs of balancing services and the results of tender assessments. 

Forecast volumes and costs

Here you can find the breakdown of operating margin (OPMR) based on forecast volume of reserve, frequency response required, annual weighting factors for STOR contracts, and BSIS and BSUoS costs.

Find out more

Real-time demand data

Click here to view a graph of demand data over the last 60 minutes.

Demand data

Historic demand dataDemand incentive forecasts Wind incentive forecasts

Historic demand data

From 06 November 2018, Demand Data Update file will be published on this new page.  

Published Sort ascending Name
11 Feb 2019Demand Data Update
14 Dec 2018Demand Data 2018
24 Jan 2018Demand Data 2017
1 Dec 2017FAQ
1 Dec 2017Demand Data Field Descriptions
1 Dec 2017Demand Data 2011-2016
10 Mar 2017Demand Data 2005-2010
6 Mar 2017Request For Customer Feedback on National Grid Energy Forecasting
24 Jun 2016Weather Corrected Demands
9

Demand incentive forecasts

From 28 July 2018, new demand forecasts data will be published on this new page.  

Name
REDEPLOYMENT OF NEW WEBSITE (READ ME)
1

Wind incentive forecasts

From 28 July 2018, new wind incentive forecasts data will be published on this new page.  

Name
REDEPLOYMENT OF NEW WEBSITE (READ ME)
1

Historic frequency data

Click here to view historic second-by-second frequency data.

Outcome system services

Find out about contracted and reactive energy volumes and data.

Reactive energy volumes and dataContracted energy volumes and dataFixed price and index-linked contract volumesFixed price and index-linked contract volumes (past)

Reactive energy volumes and data

Published Sort ascending Name
8 Nov 201706 Reactive Utilisation October-September 2017
12 Oct 201706 Reactive Utilisation October-August 2017
7 Sep 201706 Reactive Utilisation October-July 2017
15 Aug 201706 Reactive Utilisation October-June 2017
26 Jul 201706 Reactive Utilisation October-May 2017
5

Contracted energy volumes and data

As of 24 November 2017, contract volume files are split by fixed price and index-linked volumes. See the Fixed price and index-linked contract volumes section for these files.

Published Sort ascending Name
22 Apr 201822 April 2018 Contract Volume
28 Nov 201728 November 2017 Contract Volume
26 Nov 201726 November 2017 Contract Volume
25 Nov 201725 November 2017 Contract Volume.csv
24 Nov 201723 November 2017 Contract Volume
22 Nov 201722 November 2017 Contract Volume
20 Nov 201720 November 2017 Contract Volume
18 Nov 201718 November 2017 Contract Volume
17 Nov 201717 November 2017 Contract Volume
16 Nov 201716 November 2017 Contract Volume
15 Nov 201715 November 2017 Contract Volume
5 Nov 201705 November 2017 Contract Volume
3 Nov 201703 November 2017 Contract Volume
27 Oct 201727 October 2017 Contract Volume
10 Oct 201710 October 2017 Contract Volume
3 Oct 201703 October 2017 Contract Volume
7 Sep 201707 September 2017 Contract Volume
22 Aug 201722 August 2017 Contract Volume
18 Aug 201718 August 2017 Call off Volume
11 Aug 201711 August 2017 Call off Volume

Pagination

  • Current page 1
  • Page 2
  • Next page
  • Last pageLast
33

Fixed price and index-linked contract volumes

Published Sort ascending Name
5 Dec 202005-12-2020 Contract Volume
3 Dec 202003 Dec 2020 Contract Volume
19 Nov 202019 Nov 2020 Contract Volume
14 Nov 202014 Nov 2020 Contract Volume
13 Nov 202013-11-2020 Contract Volume
12 Nov 202012-11-2020 Contract Volume
9 Nov 202009-11-2020 Contract Volume
8 Nov 202008-11-2020 Contract Volume
18 Oct 202018 Oct 2020 Contract Volume
18 Sep 202017-09-2020 ContractVolume
14 Sep 202014-09-2020 ContractVolume
2 Sep 202002-09-2020 Contract Volume
28 Aug 202028-08-2020 Contract Volume
24 Aug 202024-08-2020 Contract Volume
24 Jul 202024 Jul 2020 Contract Volume
20 Jul 202020-07-2020_ContractVolume
5 Oct 201905/10/2019 Contract Volume
27 Sep 201927 Sep 2019 Contract Volume
25 Sep 201925 Sep 2019 ContractVolume
24 Sep 201924 Sep 2019 ContractVolume

Pagination

  • Current page 1
  • Page 2
  • Page 3
  • Page 4
  • Page 5
  • Next page
  • Last pageLast
99

Fixed price and index-linked contract volumes (past)

Name
11 December 2017 Contract Volume
08 December 2017 Contract Volume
01 December 2017 Contract Volume
24 November 2011 Contract Volume
25 November 2017 Contract Volume.csv
26 November 2017 Contract Volume.csv
27 November 2017 Contract Volume
28 November 2017 Contract Volume.csv
17 December 2017 Contract Volume
18 December 2017 Contract Volume
23 December 2017 Contract Volume
24 December 2017 Contract Volume
25 December 2017 Contract Volume
29 December 2017 Contract Volume
30 December 2017 Contract Volume
26 January 2018 Contract Volume
24 February 2018 Contract Volume
03 September 2018 Contract Volume
04 September 2018 Contract Volume
06 September 2018 Contract Volume

Pagination

  • Current page 1
  • Page 2
  • Next page
  • Last pageLast
37

Outcome energy services

These are documents related to the outturn for energy services we have used such as STOR, fast reserve, fast start, and frequency response.

STORFrequency response - FFR

STOR

Published Sort ascending Name
30 Oct 2015STOR Cost and Vols 04 November 2015
30 Oct 2015STOR Cost and Vols 06 November 2015
30 Oct 2015STOR Cost and Vols 03 November 2015
30 Oct 2015STOR Cost and Vols 08 November 2015
30 Oct 2015STOR Cost and Vols 05 November 2015
30 Oct 2015STOR Cost and Vols 02 November 2015
30 Oct 2015STOR Cost and Vols 07 November 2015
23 Oct 2015STOR Cost and Vols 01 November 2015
23 Oct 2015STOR Cost and Vols 29 October 2015
23 Oct 2015STOR Cost and Vols 26 October 2015
23 Oct 2015STOR Cost and Vols 31 October 2015
23 Oct 2015STOR Cost and Vols 28 October 2015
23 Oct 2015STOR Cost and Vols 30 October 2015
23 Oct 2015STOR Cost and Vols 27 October 2015
16 Oct 2015STOR Cost and Vols 23 October 2015
16 Oct 2015STOR Cost and Vols 20 October 2015
16 Oct 2015STOR Cost and Vols 25 October 2015
16 Oct 2015STOR Cost and Vols 22 October 2015
16 Oct 2015STOR Cost and Vols 19 October 2015
16 Oct 2015STOR Cost and Vols 24 October 2015

Pagination

  • Current page 1
  • Page 2
  • Page 3
  • Next page
  • Last pageLast
50

Frequency response - FFR

Published Sort ascending Name
14 Jan 2021April 2020 - March 2021 FFR Market Report
14 Jan 20212020-21 Frequency Response Volumes D9
6 Jan 20212020-21 Frequency Response Volumes D3
15 Apr 2020FFR Market Report 2019-2020
13 Apr 20202019-20 Frequency Response Volumes D9
11 Apr 20192018-19 Frequency Response Volumes D9
11 Apr 2019FFR Market Report 2018-2019
3 Apr 20192018-19 Frequency Response Volumes D3
13 Apr 20182017-18 Frequency Response Volumes D9
13 Apr 2018FFR Market Report 2017-2018
5 Apr 20182017-18 Frequency Response Volumes D3
4 Oct 20172016-17 Frequency Response Volumes
18 Apr 2017FFR Market Report 2016-2017
5 Sep 20162015-16 Frequency Response Volumes
13 Apr 20162015-16 FFR Market Report
6 May 20152014-15 Frequency Response Volumes
15 Apr 20152014-15 FFR Market Report
14 May 20142014-15 FFR Market Information Summary
8 May 20142013-14 Frequency Response Volumes
30 Apr 20142013-14 FFR Market Report

Pagination

  • Current page 1
  • Page 2
  • Next page
  • Last pageLast
22
Balancing services adjustment data (BSAD)Trading dataPGBT offer details

Balancing services adjustment data (BSAD)

We are required to publish BSAD. You can access the data via the BSAD portal.

For any issues in the contact us please contact on [email protected].

Trading data

To find data for forward contracts, please go to our forward contracts data feed.

 

PGBT offer details

We will provide PGBT offer submission data on a reasonable-endeavours basis by the end of business day + 1.

Each PGBT offer submission is reported against the start date of the PGBT requirement with which this offer is associated.

All valid offers will be published even if they are subsequently withdrawn or expire.

The Requirement Identifier Code is a unique number associated with each PGBT requirement identified by National Grid.

If you have any questions, please contact our NETA helpdesk on 0800 777770.

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