Forecast volumes and costs
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.
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Frequency Response data
See historic documents related to the outturn for energy services we have used.
BSUoS forecast data
See historic daily BSUoS Forecast data.
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 |
|---|---|
| BSUoS Forecast 2018-11-19 | 19 Nov 2018 |
| BSUoS Forecast 2018-11-16 | 16 Nov 2018 |
| BSUoS Forecast 2018-11-15 | 15 Nov 2018 |
| BSUoS Forecast 2018-11-14 | 14 Nov 2018 |
| BSUoS Forecast 2018-11-13 | 13 Nov 2018 |
| BSUoS Forecast 2018-11-12 | 12 Nov 2018 |
| BSUoS Forecast 2018-11-09 | 9 Nov 2018 |
| BSUoS Forecast 2018-11-08 | 8 Nov 2018 |
| BSUoS Forecast 2018-11-07 | 7 Nov 2018 |
| BSUoS Forecast 2018-11-06 | 6 Nov 2018 |
Daily BSUoS Forecast 2017-18
| Name | Published Sort ascending |
|---|---|
| BSUoS Forecast 2018-03-16 | 16 Mar 2018 |
| BSUoS Forecast 2018-03-15 | 15 Mar 2018 |
| BSUoS Forecast 2018-03-14 | 14 Mar 2018 |
| BSUoS Forecast 2018-03-13 | 13 Mar 2018 |
| BSUoS Forecast 2018-03-12 | 12 Mar 2018 |
| BSUoS Forecast 2018-03-09 | 9 Mar 2018 |
| BSUoS Forecast 2018-03-06 | 6 Mar 2018 |
| BSUoS Forecast 2018-03-05 | 5 Mar 2018 |
| BSUoS Forecast 2018-03-02 | 2 Mar 2018 |
| BSUoS Forecast 2018-03-01 | 1 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 outturn - June 2024 | 16 Jul 2024 |
| BSUoS Forecast Report - July 2024 | 14 Jun 2024 |
| BSUoS outturn - May 2024 | 14 Jun 2024 |
| BSUoS outturn - April 2024 | 16 May 2024 |
| BSUoS Outturn Chart and Commentary- March 2024 | 15 Apr 2024 |
| BSUoS Forecast Report - May 2024 | 15 Apr 2024 |
| BSUoS Forecast Report - Apr 2024 | 15 Mar 2024 |
| BSUoS Outturn Chart and Commentary- February 2024 | 15 Mar 2024 |
| BSUoS Outturn Chart and Commentary - January 2024 | 15 Feb 2024 |
| BSUoS Forecast Report - March 2024 | 15 Feb 2024 |
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 Jun-2019 | 28 Jun 2019 |
| Weekly OPMR - Jan-Jun 2019 | 27 Jun 2019 |
| Daily OPMR for May-2019 | 31 May 2019 |
| Daily OPMR for Apr-2019 | 30 Apr 2019 |
| Daily OPMR for Mar-2019 | 29 Mar 2019 |
| Daily OPMR for Feb-2019 | 28 Feb 2019 |
| Daily OPMR for Jan-2019 | 1 Feb 2019 |
| Daily OPMR for Dec-2018 | 31 Dec 2018 |
| Weekly OPMR - July-December 2018 | 27 Dec 2018 |
| Daily OPMR for Nov-2018 | 30 Nov 2018 |
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 Forecasting Note | 21 Jul 2015 |