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_FEB18 | 29 Mar 2018 |
MBSS_DATA_JAN15 | 20 Jul 2015 |
MBSS_DATA_JAN16 | 25 Feb 2016 |
MBSS_DATA_JAN17 | 14 Mar 2017 |
MBSS_DATA_JAN18 | 2 Mar 2018 |
MBSS_DATA_JAN18 V2 | 8 Mar 2018 |
MBSS_DATA_JUL14 | 20 Jul 2015 |
MBSS_DATA_JUL15 | 2 Sep 2015 |
MBSS_DATA_JUL16 | 23 Aug 2016 |
MBSS_DATA_JUL17 | 1 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 Sort descending | Published |
---|---|
2018-01-25 excel | 1 Feb 2018 |
2018-01-25 pdf | 1 Feb 2018 |
2018-01-26 excel | 1 Feb 2018 |
2018-01-26 pdf | 1 Feb 2018 |
2018-01-27 excel | 1 Feb 2018 |
2018-01-27 pdf | 1 Feb 2018 |
2018-01-28 excel | 31 Jan 2018 |
2018-01-28 pdf | 31 Jan 2018 |
2018-01-29 excel | 31 Jan 2018 |
2018-01-29 pdf | 31 Jan 2018 |
STOR
Name Sort descending | Published |
---|---|
TR34_MIR_tables_and_charts | 23 Mar 2018 |
TR35 Results Appendix | 29 Jun 2018 |
TR35_MIR_tables_and_charts | 27 Jul 2018 |
TR36 Results Appendix - EXT | 21 Sep 2018 |
TR36_MIR_tables_and_charts | 12 Oct 2018 |
TR37 Results Appendix (Corrected STOR ID) - EXT | 26 Feb 2019 |
TR37 Results Appendix - EXT | 22 Feb 2019 |
TR37_MIR_tables_and_charts | 22 Mar 2019 |
TR38 Results Appendix - EXT | 28 Jun 2019 |
TR38_MIR_tables_and_charts | 26 Jul 2019 |
Fast reserve
Name Sort descending | Published |
---|---|
Fast Reserve Market Report June 18 | 20 Jun 2018 |
Fast Reserve Market Report June 2019 | 18 Jun 2019 |
Fast Reserve Market Report May 18 | 21 May 2018 |
Fast Reserve Market Report May 2019 | 20 May 2019 |
Fast Reserve Market Report November 2018 | 16 Nov 2018 |
Fast Reserve Market Report November 2019 | 19 Nov 2019 |
Fast Reserve Market Report October 2018 | 18 Oct 2018 |
Fast Reserve Market Report October 2019 | 17 Oct 2019 |
Fast Reserve Market Report September 18 | 20 Sep 2018 |
Fast Reserve Market Report September 18 v2 | 28 Sep 2018 |
FFR market information reports
Name Sort descending | Published |
---|---|
FFR Market Information (Sep-18) Table | 25 Jul 2018 |
FFR Market Information (Sept 17) | 26 Jul 2017 |
FFR Market Information (Sept 17) Table | 26 Jul 2017 |
FFR Market Information (Sept-19) Table | 23 Jul 2019 |
FFR Market Information - Apr 20 | 27 Feb 2020 |
FFR Market Information - April 2021- Table | 25 Feb 2021 |
FFR Market Information - Aug 2020 - table | 25 Jun 2020 |
FFR Market Information - Aug2020 | 25 Jun 2020 |
FFR Market information - July 2020- table | 27 May 2020 |
FFR Market Information - June 2020 | 28 Apr 2020 |
FFR pre and post tender
Name Sort descending | Published |
---|---|
Post Tender Report TR127 July 2020 - Amended | 30 Jul 2020 |
Post Tender Report TR128 August 2020 - EXT | 18 Aug 2020 |
Post Tender Report TR133 January 2021- EXT | 19 Jan 2021 |
Post Tender Report TR134 February 2021- EXT | 16 Feb 2021 |
Post Tender Report TR135 March 2021 - EXT | 16 Mar 2021 |
Post Tender Report- August 17- EXT | 16 Aug 2017 |
Post Tender Report- TR121 January 2020- EXT | 16 Jan 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 - Amended- EXT | 6 Jul 2020 |