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_2015 | 20 Jul 2015 |
MBSS_DATA_MAY15 | 20 Jul 2015 |
MBSS_MARCH_2015 | 20 Jul 2015 |
MBSS FEBRUARY 2015 | 20 Jul 2015 |
MBSS_JANUARY_2015 | 20 Jul 2015 |
MBSS_NOVEMBER_2014_v2 | 20 Jul 2015 |
MBSS_OCTOBER_2014 | 20 Jul 2015 |
MBSS_SEPTEMBER_2014 | 20 Jul 2015 |
MBSS_AUGUST_2014 | 20 Jul 2015 |
MBSS_DATA_JUL14 | 20 Jul 2015 |
Past MBSS packs
Name | Published Sort descending |
---|---|
2014_15 - MBSS Pack | 17 Nov 2015 |
2006_07 - MBSS Pack | 17 Nov 2015 |
2013_14 - MBSS Pack | 17 Nov 2015 |
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 |
---|---|
2017-12-25 pdf | 5 Jan 2018 |
2017-12-27 pdf | 5 Jan 2018 |
2017-12-30 pdf | 5 Jan 2018 |
2017-12-25 excel | 5 Jan 2018 |
2017-12-27 excel | 5 Jan 2018 |
2017-12-30 excel | 5 Jan 2018 |
2017-12-28 excel | 5 Jan 2018 |
2018-01-02 pdf | 5 Jan 2018 |
2018-01-02 excel | 5 Jan 2018 |
2017-12-26 pdf | 5 Jan 2018 |
STOR
Name | Published Sort descending |
---|---|
TR29_Appendix | 1 Jul 2016 |
STOR TR29 MIR v1 | 18 Jul 2016 |
TR29_MIR_tables_and_charts | 18 Jul 2016 |
TR29_MIR_tables_and_charts v2 | 15 Aug 2016 |
TR30 STOR Runway Appendix | 30 Sep 2016 |
TR30 Appendix | 30 Sep 2016 |
STOR TR30 MIR - v2 | 18 Oct 2016 |
TR30_MIR_tables_and_charts | 30 Oct 2016 |
STOR TR30 MIR | 31 Oct 2016 |
TR30_MIR_tables_and_charts - v2 | 3 Nov 2016 |
Fast reserve
Name | Published Sort descending |
---|---|
FR Market Information (July 17) | 24 May 2017 |
11_Market Report July 2017 | 20 Jul 2017 |
FR Market Information (September 17) | 26 Jul 2017 |
1_Market Report Aug 2017 | 18 Aug 2017 |
FR Market Information (October 17) | 24 Aug 2017 |
11_Market Report Sept 2017_V2 | 22 Sep 2017 |
FR Market Information (November 17) | 26 Sep 2017 |
11_Market Report October 2017 | 19 Oct 2017 |
FR Market Information (December 17) | 25 Oct 2017 |
11_Market Report November 2017 | 20 Nov 2017 |
FFR market information reports
Name | Published Sort descending |
---|---|
FFR Market Information (Jul 16) | 26 May 2016 |
FFR Market Information (Aug 16) Tables | 24 Jun 2016 |
FFR Market Information (Aug 16) | 24 Jun 2016 |
FFR Market Information (Sep 16) Tables | 26 Jul 2016 |
FFR Market Information (Sep 16) | 26 Jul 2016 |
FFR Market Information (Oct 16) | 24 Aug 2016 |
FFR Market Information (Oct 16) Tables | 24 Aug 2016 |
FFR Market Information (Nov 16) Tables | 23 Sep 2016 |
FFR Market Information (Nov 16) | 23 Sep 2016 |
FFR Market Information (Dec 16) Tables | 26 Oct 2016 |
FFR pre and post tender
Name | Published Sort descending |
---|---|
Post Assessment Tender Report January 2015 | 19 Jan 2015 |
Post Assessment Tender Report - (Dec 14) v2 | 30 Jan 2015 |
Post Assessment Tender Report (Feb 15) | 18 Feb 2015 |
Post Assessment Tender Report (Mar 15) | 17 Mar 2015 |
Post Assessment Tender Report - April 2015 | 20 Apr 2015 |
Post assessment Tender Report May 2015 | 19 May 2015 |
Post assessment Tender Report June 2015 Final | 16 Jun 2015 |
Post Assessment Tender Report July 2015 | 16 Jul 2015 |
Post Assessment Tender Report August 2015 | 18 Aug 2015 |
Post Assessment Tender Report September 2015 | 15 Sep 2015 |