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 May 2019 | 30 Jun 2019 |
MBSS DATA MAY14 | 20 Jul 2015 |
MBSS Data November 2019 | 31 Dec 2019 |
MBSS Data November 2019 V2 | 22 Jan 2020 |
MBSS Data October 2019 | 29 Nov 2019 |
MBSS Data September 2019 | 31 Oct 2019 |
MBSS December 2019 | 31 Jan 2020 |
MBSS FEBRUARY 2015 | 20 Jul 2015 |
MBSS February 2019 pdf | 27 Mar 2019 |
MBSS January 2019 pdf | 8 Mar 2019 |
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 |
---|---|
2018-01-02 pdf | 5 Jan 2018 |
2018-01-03 excel | 9 Jan 2018 |
2018-01-03 pdf | 9 Jan 2018 |
2018-01-04 excel | 5 Jan 2018 |
2018-01-04 pdf | 5 Jan 2018 |
2018-01-05 excel | 8 Jan 2018 |
2018-01-05 pdf | 8 Jan 2018 |
2018-01-06 excel | 9 Jan 2018 |
2018-01-06 pdf | 9 Jan 2018 |
2018-01-07 excel | 9 Jan 2018 |
STOR
Name Sort descending | Published |
---|---|
STOR Market Information for TR26_Appendix V2 | 10 Jul 2017 |
STOR Market Information report for TR25 v.2 | 10 Jul 2017 |
STOR Market Information TR22 | 10 Jul 2017 |
STOR TR26 MIR | 10 Jul 2017 |
STOR TR27 MIR_updated v_2 | 10 Jul 2017 |
STOR TR28 MIR | 10 Jul 2017 |
STOR TR28 MIR V_2 | 10 Jul 2017 |
STOR TR28 MIR V_3 | 10 Jul 2017 |
STOR TR29 MIR v1 | 18 Jul 2016 |
STOR TR30 MIR | 31 Oct 2016 |
Fast reserve
Name Sort descending | Published |
---|---|
Fast Reserve Market Information Data (August-18) | 22 Jun 2018 |
Fast Reserve Market Information Data (December 2018) | 22 Oct 2018 |
Fast Reserve Market Information Data (February 18) | 22 Dec 2017 |
Fast Reserve Market Information Data (February 18)v2 | 20 Feb 2018 |
Fast Reserve Market Information Data (January 18) | 24 Nov 2017 |
Fast Reserve Market Information Data (January 18) v2 | 20 Feb 2018 |
Fast Reserve Market Information Data (July 18) | 25 May 2018 |
Fast Reserve Market Information Data (June 18) | 26 Apr 2018 |
Fast Reserve Market Information Data (June 19) - v2 | 25 Apr 2019 |
Fast Reserve Market Information Data (March 18) | 25 Jan 2018 |
FFR market information reports
Name Sort descending | Published |
---|---|
FFR Market Information (Feb 17) Tables | 23 Dec 2016 |
FFR Market Information (Feb 18) | 22 Dec 2017 |
FFR Market Information (Feb 18) Table | 22 Dec 2017 |
FFR Market Information (February 19) | 20 Dec 2018 |
FFR Market Information (February 19) Table | 20 Dec 2018 |
FFR Market Information (Jan 17) | 24 Nov 2016 |
FFR Market Information (Jan 17) Tables | 24 Nov 2016 |
FFR Market Information (Jan 18) | 24 Nov 2017 |
FFR Market Information (Jan 18) Table | 24 Nov 2017 |
FFR Market Information (January 19) | 26 Nov 2018 |
FFR pre and post tender
Name Sort descending | Published |
---|---|
Post Assessment Tender Report April 2016 | 18 Apr 2016 |
Post Assessment Tender Report August 2015 | 18 Aug 2015 |
Post Assessment Tender Report Dec 2015 | 23 Dec 2015 |
Post Assessment Tender Report Feb 2016 | 16 Feb 2016 |
Post Assessment Tender Report Jan 16(1) | 22 Jan 2016 |
Post Assessment Tender Report January 2015 | 19 Jan 2015 |
Post Assessment Tender Report July 2015 | 16 Jul 2015 |
Post Assessment Tender Report July 2016 | 18 Jul 2016 |
Post assessment Tender Report June 2015 Final | 16 Jun 2015 |
Post Assessment Tender Report March 2016 | 16 Mar 2016 |