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 | Published Sort descending |
---|---|
MBSS_April_2017 | 1 Jun 2017 |
MBSS_DATA_APR17 | 1 Jun 2017 |
MBSS_DATA_MAY17 | 28 Jun 2017 |
MBSS_May_2017 | 28 Jun 2017 |
MBSS_DATA_JUN17 | 7 Aug 2017 |
MBSS_Jun_2017 | 7 Aug 2017 |
MBSS_DATA_JUL17 | 1 Sep 2017 |
MBSS_Jul_2017 | 1 Sep 2017 |
MBSS_Aug_2017 | 29 Sep 2017 |
MBSS_DATA_AUG17 | 29 Sep 2017 |
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 | Published Sort descending |
---|---|
2018-01-29 pdf | 31 Jan 2018 |
2018-01-28 pdf | 31 Jan 2018 |
2018-01-30 pdf | 31 Jan 2018 |
2018-01-25 excel | 1 Feb 2018 |
2018-01-26 excel | 1 Feb 2018 |
2018-01-27 excel | 1 Feb 2018 |
2018-01-25 pdf | 1 Feb 2018 |
2018-01-26 pdf | 1 Feb 2018 |
2018-01-27 pdf | 1 Feb 2018 |
2018-01-31 excel | 2 Feb 2018 |
STOR
Name | Published Sort descending |
---|---|
TR37 Results Appendix - EXT | 22 Feb 2019 |
TR37 Results Appendix (Corrected STOR ID) - EXT | 26 Feb 2019 |
STOR TR37 MIR | 22 Mar 2019 |
TR37_MIR_tables_and_charts | 22 Mar 2019 |
TR38 Results Appendix - EXT | 28 Jun 2019 |
TR38_MIR_tables_and_charts | 26 Jul 2019 |
STOR TR38 MIR | 26 Jul 2019 |
TR39 Results Appendix - EXT | 20 Sep 2019 |
STOR TR39 MIR | 11 Oct 2019 |
TR39_MIR_tables_and_charts | 11 Oct 2019 |
Fast reserve
Name | Published Sort descending |
---|---|
Fast Reserve Market Information Report (May 19) | 26 Mar 2019 |
Fast Reserve Market Information Data (May 19) | 26 Mar 2019 |
Fast Reserve Market Report (April 2019) | 18 Apr 2019 |
Fast Reserve Webex April 2019 | 24 Apr 2019 |
Fast Reserve Market Information Data (June 19) - v2 | 25 Apr 2019 |
Fast Reserve Market Information Report (June 19) | 25 Apr 2019 |
Fast Reserve Market Report May 2019 | 20 May 2019 |
Fast Reserve Market Information Report July 2019 | 24 May 2019 |
Fast Reserve Webex May 2019 | 24 May 2019 |
Fast Reserve Market Information Data July 2019 | 24 May 2019 |
FFR market information reports
Name | Published Sort descending |
---|---|
FFR Market information (August 19) Table | 26 Jun 2019 |
FFR Market Information (Sept-19) Table | 23 Jul 2019 |
FFR Market Information (Sep 19) | 23 Jul 2019 |
FFR Market Information (Oct-19) | 27 Aug 2019 |
FFR Market Information (Oct-19) Table | 27 Aug 2019 |
FFR Market Information (Nov-19) Table | 25 Sep 2019 |
FFR Market Information (Nov-19) | 25 Sep 2019 |
FFR Market Information Dec-19 table | 24 Oct 2019 |
FFR Market information Dec - 19 | 24 Oct 2019 |
FFR Market Information Jan- 20 Table | 26 Nov 2019 |
FFR pre and post tender
Name | Published Sort descending |
---|---|
Post Tender Report - TR117 September 2019 - EXT | 17 Sep 2019 |
Post Tender Report - TR118 October 2019 - EXT | 16 Oct 2019 |
Post Tender Report - TR119 November 2019 - EXT | 18 Nov 2019 |
Post Tender Report - TR120 December 2019 - EXT | 13 Dec 2019 |
Post Tender Report- TR121 January 2020- EXT | 16 Jan 2020 |
Post Tender Report - TR122 February 2020- EXT | 14 Feb 2020 |
Post Tender Report - TR123 March 2020- EXT | 17 Mar 2020 |
Post Tender Report- TR124 April 2020- EXT | 20 Apr 2020 |
Post Tender Report- TR125 May 2020 - EXT | 19 May 2020 |
Post Tender Report- TR126 June 2020 - EXT | 16 Jun 2020 |