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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.  

PublishedName Sort descending
10 Mar 2017Demand Data 2005-2010
1 Dec 2017Demand Data 2011-2016
24 Jan 2018Demand Data 2017
14 Dec 2018Demand Data 2018
1 Dec 2017Demand Data Field Descriptions
11 Feb 2019Demand Data Update
1 Dec 2017FAQ
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 Sort descending
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 Sort descending
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

PublishedName Sort descending
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
8 Nov 201706 Reactive Utilisation October-September 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.

PublishedName Sort descending
2 Aug 201702 August 2017 Contract Volume
3 Jul 201703 July 2017 Contract Volume
3 Nov 201703 November 2017 Contract Volume
3 Oct 201703 October 2017 Contract Volume
4 Aug 201704 August 2017 Contract Volume
5 Nov 201705 November 2017 Contract Volume
7 Jul 201707 July 2017 Contract Volume
7 Sep 201707 September 2017 Contract Volume
10 Oct 201710 October 2017 Contract Volume
11 Aug 201711 August 2017 Call off Volume
12 Jul 201712 July 2017 Contract Volume
13 Jul 201713 July 2017 Contract Volume
14 Jul 201714 July 2017 Contract Volume
15 Nov 201715 November 2017 Contract Volume
16 Nov 201716 November 2017 Contract Volume
17 Jul 201717 July 2017 Contract Volume
17 Nov 201717 November 2017 Contract Volume
18 Aug 201718 August 2017 Call off Volume
18 Jul 201718 July 2017 Contract Volume
18 Nov 201718 November 2017 Contract Volume

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Fixed price and index-linked contract volumes

PublishedName Sort descending
1 Apr 201901 Apr 2019 Contract Volume
1 Jun 201901 June 2019 Contract Volume
1 Sep 201901/09/2019 Contract Volume
2 Apr 201902 Apr 2019 Contract Volume
2 Jul 201902 Jul 2019 Contract Volume
2 Sep 201902 Sep 2019 Contract Volume
2 Sep 202002-09-2020 Contract Volume
3 Dec 202003 Dec 2020 Contract Volume
3 May 201903 May 2019 Contract Volume
4 May 201904 May 2019 Contract Volume
5 Jul 201905 Jul 2019 Contract Volume
5 Dec 202005-12-2020 Contract Volume
5 May 201905-May-2019 Contract Volume
5 Oct 201905/10/2019 Contract Volume
6 May 201906 May 2019 Contract Volume
6 Sep 201906 Sep 2019 Contract Volume
7 Apr 201907 Apr 2019 Contract Volume
7 Jun 201907 June 2019 Contract Volume.
7 May 201907 May 2019 Contract Volume
7 Sep 201907/09/2019 Contract Volume

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Fixed price and index-linked contract volumes (past)

Name Sort descending
28 November 2017 Contract Volume.csv
01 Apr 2019 Contract Volume
01 December 2017 Contract Volume
02 Apr 2019 Contract Volume
03 September 2018 Contract Volume
04 September 2018 Contract Volume
06 September 2018 Contract Volume
07 Apr 2019 Contract Volume
08 Apr 2019 Contract Volume
08 December 2017 Contract Volume
08 September 2018 Contract Volume
09 Apr 2019 Contract Volume
09 September 2018 Contract Volume
11 December 2017 Contract Volume
11 September 2018 Contract Volume
12 September 2018 Contract Volume
17 December 2017 Contract Volume
17 September 2018 Contract Volume
18 December 2017 Contract Volume
18 September 2018 Contract Volume

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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

PublishedName Sort descending
23 Oct 2015STOR Cost and Vols 01 November 2015
25 Sep 2015STOR Cost and Vols 01 October 2015
30 Oct 2015STOR Cost and Vols 02 November 2015
25 Sep 2015STOR Cost and Vols 02 October 2015
30 Oct 2015STOR Cost and Vols 03 November 2015
25 Sep 2015STOR Cost and Vols 03 October 2015
30 Oct 2015STOR Cost and Vols 04 November 2015
25 Sep 2015STOR Cost and Vols 04 October 2015
30 Oct 2015STOR Cost and Vols 05 November 2015
2 Oct 2015STOR Cost and Vols 05 October 2015
30 Oct 2015STOR Cost and Vols 06 November 2015
2 Oct 2015STOR Cost and Vols 06 October 2015
30 Oct 2015STOR Cost and Vols 07 November 2015
2 Oct 2015STOR Cost and Vols 07 October 2015
30 Oct 2015STOR Cost and Vols 08 November 2015
2 Oct 2015STOR Cost and Vols 08 October 2015
2 Oct 2015STOR Cost and Vols 09 October 2015
2 Oct 2015STOR Cost and Vols 10 October 2015
2 Oct 2015STOR Cost and Vols 11 October 2015
9 Oct 2015STOR Cost and Vols 12 October 2015

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Frequency response - FFR

PublishedName Sort descending
30 Apr 20142013-14 FFR Market Information Summary
30 Apr 20142013-14 FFR Market Report
8 May 20142013-14 Frequency Response Volumes
14 May 20142014-15 FFR Market Information Summary
15 Apr 20152014-15 FFR Market Report
6 May 20152014-15 Frequency Response Volumes
13 Apr 20162015-16 FFR Market Report
5 Sep 20162015-16 Frequency Response Volumes
4 Oct 20172016-17 Frequency Response Volumes
5 Apr 20182017-18 Frequency Response Volumes D3
13 Apr 20182017-18 Frequency Response Volumes D9
3 Apr 20192018-19 Frequency Response Volumes D3
11 Apr 20192018-19 Frequency Response Volumes D9
13 Apr 20202019-20 Frequency Response Volumes D9
6 Jan 20212020-21 Frequency Response Volumes D3
14 Jan 20212020-21 Frequency Response Volumes D9
14 Jan 2021April 2020 - March 2021 FFR Market Report
30 Oct 2013BMU Capability and Price Submission Report - January 2007
18 Apr 2017FFR Market Report 2016-2017
13 Apr 2018FFR Market Report 2017-2018

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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
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