On this page you can see a historic data related to the operating margin (OPMR).
New forecast volume of reserve, forecast volume of frequency response required, annual weighting factors for STOR contracts, and forecasts of BSUoS charges will be published on the Data Portal on a regularly basis.
Frequency response requirement documents are now on the System balancing reports page.
You can find out more about the balancing services incentive scheme (BSIS) and balancing services use of system (BSUoS) on their respective pages.
Daily BSUoS Forecast 2018-19
From 1st March 2020, Daily BSUoS Forecast files will be published on our new National Grid ESO Data Portal.
Please see link below for the location:
https://data.nationalgrideso.com/balancing/balancing-services-use-of-system-bsuos-daily-forecast
| Name | Published Sort ascending |
|---|---|
| Daily BSUoS Forecast 2019-20 | 28 Feb 2020 |
| Daily BSUoS Forecast 2018-19 | 3 Apr 2019 |
| BSUoS Forecast 2018-11-29 | 29 Nov 2018 |
| BSUoS Forecast 2018-11-28 | 28 Nov 2018 |
| BSUoS Forecast 2018-11-27 | 27 Nov 2018 |
| BSUoS Forecast 2018-11-26 | 26 Nov 2018 |
| BSUoS Forecast 2018-11-23 | 23 Nov 2018 |
| BSUoS Forecast 2018-11-22 | 22 Nov 2018 |
| BSUoS Forecast 2018-11-21 | 21 Nov 2018 |
| BSUoS Forecast 2018-11-20 | 20 Nov 2018 |
Daily BSUoS Forecast 2017-18
| Name | Published Sort ascending |
|---|---|
| BSUoS Forecast 2018-03-29 | 29 Mar 2018 |
| BSUoS Forecast 2018-03-28 | 28 Mar 2018 |
| BSUoS Forecast 2018-03-27 | 27 Mar 2018 |
| BSUoS Forecast 2018-03-26 | 26 Mar 2018 |
| BSUoS Forecast 2018-03-25 | 25 Mar 2018 |
| BSUoS Forecast 2018-03-24 | 24 Mar 2018 |
| BSUoS Forecast 2018-03-23 | 23 Mar 2018 |
| BSUoS Forecast 2018-03-22 | 22 Mar 2018 |
| BSUoS Forecast 2018-03-21 | 21 Mar 2018 |
| BSUoS Forcast 2018-03-19 | 19 Mar 2018 |
Monthly BSUoS Forecast
From 1st March 2020, Monthly BSUoS Forecast files will be published on our new National Grid ESO Data Portal.
Please see link below for the location:
https://data.nationalgrideso.com/balancing/bsuos-monthly-forecast
| Name | Published Sort ascending |
|---|---|
| BSUoS Forecast Report - Dec 2023 | 16 Nov 2023 |
| BSUoS Outturn Chart and Commentary October 2023 | 16 Nov 2023 |
| BSUoS Outturn Chart and Commentary September 2023 | 13 Oct 2023 |
| BSUoS Forecast Report - Nov 2023 | 13 Oct 2023 |
| BSUoS Outturn Chart and Commentary August 2023 | 15 Sep 2023 |
| BSUoS Forecast October 2023 | 15 Sep 2023 |
| BSUoS Outturn Chart and Commentary July 2023-Revised | 29 Aug 2023 |
| BSUoS Forecast September 2023 | 15 Aug 2023 |
| BSUoS Outturn Chart and Commentary July 2023 | 15 Aug 2023 |
| BSUoS Outturn Chart and Commentary June 2023 | 1 Jul 2023 |
Reserve requirement (OPMR)
From 1st March 2020, Operational Planning Margin Requirement (OPMR) and wind availability files will be published on our new National Grid ESO Data Portal. Please scroll down to OPMR and Wind availability files for daily or weekly.
Please see link below for the location:
| Name | Published Sort ascending |
|---|---|
| Daily OPMR for Feb-2020 | 28 Feb 2020 |
| Wind Availability | 28 Feb 2020 |
| Weekly OPMR - January-June 2020 | 27 Feb 2020 |
| Weekly Wind Availability | 27 Feb 2020 |
| Daily OPMR for Jan-2020 | 31 Jan 2020 |
| Daily OPMR for Nov-2019 | 29 Nov 2019 |
| Daily OPMR for Oct-2019 | 1 Nov 2019 |
| Daily OPMR for Sep-2019 | 30 Sep 2019 |
| Daily OPMR for Aug-2019 | 30 Aug 2019 |
| Daily OPMR for Jul-2019 | 31 Jul 2019 |
NRAPM forecast
The purpose of the Negative Reserve Active Power Margin (NRAPM) forecasting report is to indicate to the market a risk of NRAPM situation and therefore risk of Emergency Instructions.
From 1st March 2020, NRAPM (Negative Reserve Active Power Margin) forecast files will be published on our new National Grid ESO Data Portal.
Please see link below for the location:
https://data.nationalgrideso.com/generation/negative-reserve-active-power-margin-nrapm-forecast
| Name | Published Sort ascending |
|---|---|
| NRAPM Risk Forecast | 28 Feb 2020 |
| NRAPM Risk Forecast | 19 Jul 2018 |
| NRAPM Risk Forecast | 21 May 2018 |
| NRAPM Risk Forecast | 18 May 2018 |
| NRAPM Risk Forecast | 11 May 2018 |
| NRAPM Risk Forecast | 10 May 2018 |
| NRAPM Risk Forecast | 19 Apr 2018 |
| NRAPM Risk Forecast | 23 Mar 2018 |
| NRAPM Risk Forecast | 15 Feb 2018 |
| NRAPM Risk Forecast | 23 Jan 2018 |
STOR weighting factors
You might also be interested in:
See historic documents related to the outturn for energy services we have used.
See historic daily BSUoS Forecast data.