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Breadcrumb

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Data finder and explorer

On this page, you can download and use our data finder to quickly and easily locate the data you're looking for. You can also explore data on this page relating to the commercial operation of the National Electricity Transmission System (NETS).

Data finder

Please click on our interactive data finder below to quickly and easily locate the data you require. You can also download the interactive PDF for future use.

Enlarge and download


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


Data explorer

You can explore the data below which includes cost and volume forecasts, and outcomes relating to balancing services, reserve, and response. We also include information here associated with contract and services reports, showing the costs of balancing services and the results of tender assessments. 

Real-time demand data

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

Demand data

Our Demand Data StrategyHistoric demand dataDemand incentive forecasts Wind incentive forecasts

Our Demand Data Strategy

Name
Energy Forecasting Strategic Roadmap 2020
Energy Forecasting Strategic Project Roadmap
2

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 2017Demand Data Field Descriptions
1 Dec 2017Demand Data 2011-2016
1 Dec 2017FAQ
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
9 Apr 201909 Apr 2019 Contract Volume
8 Apr 201908 Apr 2019 Contract Volume
7 Apr 201907 Apr 2019 Contract Volume
2 Apr 201902 Apr 2019 Contract Volume
1 Apr 201901 Apr 2019 Contract Volume
30 Sep 201830 Sep 2018 Contract Volume
29 Sep 201829 Sep 2018 Contract Volume
28 Sep 201828 Sep 2018 Contract Volume
26 Sep 201826 September 2018 Contract Volume
24 Sep 201824 September 2018 Contract Volume
21 Sep 201821 September 2018 Contract Volume
18 Sep 201818 September 2018 Contract Volume
17 Sep 201817 September 2018 Contract Volume
12 Sep 201812 September 2018 Contract Volume
11 Sep 201811 September 2018 Contract Volume
9 Sep 201809 September 2018 Contract Volume
8 Sep 201808 September 2018 Contract Volume
6 Sep 201806 September 2018 Contract Volume
4 Sep 201804 September 2018 Contract Volume
3 Sep 201803 September 2018 Contract Volume

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Fixed price and index-linked contract volumes

As announced in the NGESO Forum and Transparency Seminars, as well as the notice here,  the Fixed price and index-linked contract volumes have now (on Dec 11th, 2020) moved to our new exciting data portal, you can also find historic enactment there too. If you have any questions, please don't hesitate to contact us.

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

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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

Published Sort ascending Name
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
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
23 Oct 2015STOR Cost and Vols 30 October 2015
23 Oct 2015STOR Cost and Vols 27 October 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
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
16 Oct 2015STOR Cost and Vols 21 October 2015
16 Oct 2015STOR Cost and Vols 23 October 2015

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Frequency response - FFR

Published Sort ascending Name
3 Mar 20232022-23 Frequency Response Volumes D3
13 May 2022April 2021 - March 2022 FFR Market Report
13 Apr 20222021-22 Frequency Response Volumes D9
5 Apr 20222021-22 Frequency Response Volumes D3
5 Oct 20212021-22 Frequency Response Volumes D3
15 Apr 20212020-21 Frequency Response Volumes D9
15 Apr 2021April 2020 - March 2021 FFR Market Report
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 2018FFR Market Report 2017-2018
13 Apr 20182017-18 Frequency Response Volumes D9
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

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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.

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