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 ascending | Published |
---|---|
MBSS_February_2017 | 7 Apr 2017 |
MBSS_FEBRUARY_2016 | 24 Mar 2016 |
MBSS_Dec_2017 | 2 Feb 2018 |
MBSS_December_2018 | 7 Feb 2019 |
MBSS_December_2016 | 21 Feb 2017 |
MBSS_DECEMBER_2015 | 25 Feb 2016 |
MBSS_DATA_September_2018 Excel | 30 Oct 2018 |
MBSS_DATA_SEP17 | 26 Oct 2017 |
MBSS_DATA_SEP16 | 28 Oct 2016 |
MBSS_DATA_SEP15 | 30 Oct 2015 |
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 ascending | Published |
---|---|
2020-02-13 EXCEL | 14 Feb 2020 |
2020-02-12 PDF | 13 Feb 2020 |
2020-02-12 EXCEL | 13 Feb 2020 |
2020-02-11 PDF | 13 Feb 2020 |
2020-02-11 EXCEL | 13 Feb 2020 |
2020-02-10 PDF | 12 Feb 2020 |
2020-02-10 EXCEL | 12 Feb 2020 |
2020-02-09 pdf | 11 Feb 2020 |
2020-02-09 Excel | 11 Feb 2020 |
2020-02-08 pdf | 11 Feb 2020 |
STOR
Name Sort ascending | Published |
---|---|
STOR TR39 MIR | 11 Oct 2019 |
STOR TR38 MIR | 26 Jul 2019 |
STOR TR37 MIR | 22 Mar 2019 |
STOR TR36 MIR | 12 Oct 2018 |
STOR TR35 MIR | 27 Jul 2018 |
STOR TR34 MIR | 23 Mar 2018 |
STOR TR33 MIR | 20 Oct 2017 |
STOR TR32 MIR | 28 Jul 2017 |
STOR TR31 MIR - v2 | 6 Apr 2017 |
STOR TR31 MIR | 24 Mar 2017 |
Fast reserve
Name Sort ascending | Published |
---|---|
Fast Reserve Post Assessment Webex November 18 | 21 Nov 2018 |
Fast Reserve Post Assessment WebEx May-18 | 7 Jun 2018 |
Fast Reserve Post Assessment WebEx June-18 | 19 Jul 2018 |
Fast Reserve Post Assessment WebEx July-18 | 23 Jul 2018 |
Fast Reserve Post Assessment Webex January 2019 | 7 Feb 2019 |
Fast Reserve Post Assessment Webex August 18 | 24 Sep 2018 |
Fast Reserve OCP Webinar December 2019 | 13 Dec 2019 |
Fast Reserve Market Report September 2019 | 17 Sep 2019 |
Fast Reserve Market Report September 18 v2 | 28 Sep 2018 |
Fast Reserve Market Report September 18 | 20 Sep 2018 |
FFR market information reports
Name Sort ascending | Published |
---|---|
FFR Market Information - Aug2020 | 25 Jun 2020 |
FFR Market Information - Aug 2020 - table | 25 Jun 2020 |
FFR Market Information - April 2021- Table | 25 Feb 2021 |
FFR Market Information - Apr 20 | 27 Feb 2020 |
FFR Market Information (Sept-19) Table | 23 Jul 2019 |
FFR Market Information (Sept 17) Table | 26 Jul 2017 |
FFR Market Information (Sept 17) | 26 Jul 2017 |
FFR Market Information (Sep-18) Table | 25 Jul 2018 |
FFR Market Information (Sep-18) | 25 Jul 2018 |
FFR Market Information (Sep 19) | 23 Jul 2019 |
FFR pre and post tender
Name Sort ascending | Published |
---|---|
Post Tender Report - TR109 January 2019 | 17 Jan 2019 |
Post Tender Report - TR108 December 2018 EXT - Amended 29.01.2019 | 29 Jan 2019 |
Post Tender Report - TR108 December 2018 | 18 Dec 2018 |
Post Tender Report - TR107 November 2018 EXT | 16 Nov 2018 |
Post Tender Report - TR106 October 2018 EXT revised 06.11.18 | 6 Nov 2018 |
Post Tender Report - June 2017 - EXT Amended 21.07.17 | 25 Jul 2017 |
Post Tender Report - June 2017 - EXT Amended 13.07.17 | 18 Jul 2017 |
Post Tender Report - June 2017 - EXT | 16 Jun 2017 |
Post tender Report - July 2017- EXT amended 25.07.17 | 25 Jul 2017 |
Post tender Report - July 2017- EXT | 18 Jul 2017 |