On this page, you will find reports that we publish relating to the commercial operation of the electricity transmission system.
The service reports show the requirements for balancing services and the results of tender assessments. A service by service summary of the cost of balancing services is provided in the monthly balancing services summary (MBSS).
Service reports
The service reports show the requirements for balancing services and the results of tender assessments. A service by service summary of the cost of balancing services is provided in the monthly balancing services summary (MBSS).
Monthly balancing services summaries (MBSS)
From 2nd March 2020, MBSS files will be published on our new National Grid ESO Data Portal.
Please see link below for the location:
Name Sort descending | Published |
---|---|
MBSS_DATA_JUN15 | 27 Jul 2015 |
MBSS_DATA_JUN16 | 27 Jul 2016 |
MBSS_DATA_JUN17 | 7 Aug 2017 |
MBSS_DATA_June_2018 Excel | 1 Aug 2018 |
MBSS_DATA_MAR15 | 20 Jul 2015 |
MBSS_DATA_MAR16 | 26 Apr 2016 |
MBSS_DATA_MAR17 | 4 May 2017 |
MBSS_DATA_MAR18 | 9 May 2018 |
MBSS_DATA_MAY15 | 20 Jul 2015 |
MBSS_DATA_MAY16 | 27 Jun 2016 |
Past MBSS packs
Past MBSS packs
From 1st March 2020, Daily balancing costs (BSUoS) files will be published on our new National Grid ESO Data Portal.
Please see link below for the daily historic outturn & forecast file:
https://data.nationalgrideso.com/balancing/bsuos-monthly-cost
Please see link below for the daily balancing costs data files:
https://data.nationalgrideso.com/balancing/daily-balancing-costs-balancing-services-use-of-system
Please see link below for the daily balancing costs report files:
Name Sort descending | Published |
---|---|
2018-01-30 excel | 31 Jan 2018 |
2018-01-30 pdf | 31 Jan 2018 |
2018-01-31 excel | 2 Feb 2018 |
2018-01-31 excel | 2 Feb 2018 |
2018-01-31 pdf | 2 Feb 2018 |
2018-01-31 pdf | 2 Feb 2018 |
2018-02-01 excel | 2 Feb 2018 |
2018-02-01 pdf | 2 Feb 2018 |
2018-02-02 excel | 5 Feb 2018 |
2018-02-02 pdf | 5 Feb 2018 |
STOR
Name Sort descending | Published |
---|---|
TR39 Results Appendix - EXT | 20 Sep 2019 |
TR39_MIR_tables_and_charts | 11 Oct 2019 |
Fast reserve
Name Sort descending | Published |
---|---|
Fast Reserve Market Report September 2019 | 17 Sep 2019 |
Fast Reserve OCP Webinar December 2019 | 13 Dec 2019 |
Fast Reserve Post Assessment Webex August 18 | 24 Sep 2018 |
Fast Reserve Post Assessment Webex January 2019 | 7 Feb 2019 |
Fast Reserve Post Assessment WebEx July-18 | 23 Jul 2018 |
Fast Reserve Post Assessment WebEx June-18 | 19 Jul 2018 |
Fast Reserve Post Assessment WebEx May-18 | 7 Jun 2018 |
Fast Reserve Post Assessment Webex November 18 | 21 Nov 2018 |
Fast Reserve Post Assessment Webex September 18 | 9 Nov 2018 |
Fast Reserve Webex April 2019 | 24 Apr 2019 |
FFR market information reports
Name Sort descending | Published |
---|---|
FFR Market Information - June 2020 - table | 28 Apr 2020 |
FFR Market Information - June 2021- Table | 26 Mar 2021 |
FFR Market Information - May 20 | 25 Mar 2020 |
FFR Market Information - May 20 Table | 25 Mar 2020 |
FFR Market Information - Nov 2020- Table | 24 Sep 2020 |
FFR Market Information - Sept 2020 | 24 Jul 2020 |
FFR Market Information - Sept 2020 - Table | 24 Jul 2020 |
FFR Market Information -July 2020 | 27 May 2020 |
FFR Market Information Apr-20 Table | 27 Feb 2020 |
FFR Market information Dec - 19 | 24 Oct 2019 |
FFR pre and post tender
Name Sort descending | Published |
---|---|
Post Tender Report- TR126 June 2020 - EXT | 16 Jun 2020 |
Post Tender Report- TR127 July 2020 – EXT | 16 Jul 2020 |
Post Tender Report- TR132 December 2020- EXT | 16 Dec 2020 |
Post Tender Report-December 2017 - EXT | 18 Dec 2017 |
Post Tender Report-January 2018 - TR97 EXT | 17 Jan 2018 |
Post Tender Report-November 2017 - EXT | 16 Nov 2017 |
Post Tender Report-October 2017 - EXT | 17 Oct 2017 |
Post Tender Report-October 2017 - EXT amended | 17 Oct 2017 |
Post Tender Report-September 2017 - EXT | 19 Sep 2017 |
Post Tender Report-September 2017 - EXT amended 19.09.2017 | 19 Sep 2017 |