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.
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.
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.
Our Demand Data Strategy
Historic demand data
From 06 November 2018, Demand Data Update file will be published on this new page.
Name Sort ascending | Published |
---|---|
Weather Corrected Demands | 24 Jun 2016 |
Request For Customer Feedback on National Grid Energy Forecasting | 6 Mar 2017 |
FAQ | 1 Dec 2017 |
Demand Data Update | 11 Feb 2019 |
Demand Data Field Descriptions | 1 Dec 2017 |
Demand Data 2018 | 14 Dec 2018 |
Demand Data 2017 | 24 Jan 2018 |
Demand Data 2011-2016 | 1 Dec 2017 |
Demand Data 2005-2010 | 10 Mar 2017 |
Demand incentive forecasts
From 28 July 2018, new demand forecasts data will be published on this new page.
Wind incentive forecasts
From 28 July 2018, new wind incentive forecasts data will be published on this new page.
Click here to view historic second-by-second frequency data.
Reactive energy volumes and data
Name Sort ascending | Published |
---|---|
06 Reactive Utilisation October-September 2017 | 8 Nov 2017 |
06 Reactive Utilisation October-May 2017 | 26 Jul 2017 |
06 Reactive Utilisation October-June 2017 | 15 Aug 2017 |
06 Reactive Utilisation October-July 2017 | 7 Sep 2017 |
06 Reactive Utilisation October-August 2017 | 12 Oct 2017 |
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.
Name Sort ascending | Published |
---|---|
31 July 2017 Contract Volume | 31 Jul 2017 |
30 Sep 2018 Contract Volume | 30 Sep 2018 |
29 Sep 2018 Contract Volume | 29 Sep 2018 |
28 Sep 2018 Contract Volume | 28 Sep 2018 |
28 November 2017 Contract Volume | 28 Nov 2017 |
27 October 2017 Contract Volume | 27 Oct 2017 |
27 November 2017 Contract Volume | 27 Nov 2017 |
26 September 2018 Contract Volume | 26 Sep 2018 |
26 November 2017 Contract Volume.csv | 26 Nov 2017 |
26 November 2017 Contract Volume | 26 Nov 2017 |
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.
Name Sort ascending | Published |
---|---|
29 May 2019 Contract Volume | 29 May 2019 |
28-08-2020 Contract Volume | 28 Aug 2020 |
28 May 2019 Contract Volume | 28 May 2019 |
28 Apr 2019 Contract Volume | 28 Apr 2019 |
27-May-2019 Contract Volume | 27 May 2019 |
27 Sep 2019 Contract Volume | 27 Sep 2019 |
26-May-2019 ContractVolume | 26 May 2019 |
25/06/2019 Contract Volume | 25 Jun 2019 |
25-May-2019 Contract Volume | 25 May 2019 |
25 Sep 2019 ContractVolume | 25 Sep 2019 |
Fixed price and index-linked contract volumes (past)
These are documents related to the outturn for energy services we have used such as STOR, fast reserve, fast start, and frequency response.
STOR
Name Sort ascending | Published |
---|---|
STOR Cost and Vols 31 October 2015 | 23 Oct 2015 |
STOR Cost and Vols 30 September 2015 | 25 Sep 2015 |
STOR Cost and Vols 30 October 2015 | 23 Oct 2015 |
STOR Cost and Vols 29 September 2015 | 25 Sep 2015 |
STOR Cost and Vols 29 October 2015 | 23 Oct 2015 |
STOR Cost and Vols 28 September 2015 | 25 Sep 2015 |
STOR Cost and Vols 28 October 2015 | 23 Oct 2015 |
STOR Cost and Vols 27 September 2015 | 18 Sep 2015 |
STOR Cost and Vols 27 October 2015 | 23 Oct 2015 |
STOR Cost and Vols 26 September 2015 | 18 Sep 2015 |
Frequency response - FFR
Name Sort ascending | Published |
---|---|
FFR Market Report 2019-2020 | 15 Apr 2020 |
FFR Market Report 2018-2019 | 11 Apr 2019 |
FFR Market Report 2017-2018 | 13 Apr 2018 |
FFR Market Report 2016-2017 | 18 Apr 2017 |
BMU Capability and Price Submission Report - January 2007 | 30 Oct 2013 |
April 2023 - March 2024 FFR Market Report | 13 Dec 2023 |
April 2022 - March 2023 FFR Market Report | 17 Apr 2023 |
April 2021 - March 2022 FFR Market Report | 13 May 2022 |
April 2020 - March 2021 FFR Market Report | 15 Apr 2021 |
2024-25 Frequency Response volumes D9 | 14 May 2024 |
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.