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_DATA_NOV14 | 20 Jul 2015 |
MBSS_DATA_May_2018 Excel | 11 Jul 2018 |
MBSS_DATA_MAY17 | 28 Jun 2017 |
MBSS_DATA_MAY16 | 27 Jun 2016 |
MBSS_DATA_MAY15 | 20 Jul 2015 |
MBSS_DATA_MAR18 | 9 May 2018 |
MBSS_DATA_MAR17 | 4 May 2017 |
MBSS_DATA_MAR16 | 26 Apr 2016 |
MBSS_DATA_MAR15 | 20 Jul 2015 |
MBSS_DATA_June_2018 Excel | 1 Aug 2018 |
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 |
---|---|
2020-02-03 excel | 5 Feb 2020 |
2020-02-02 pdf | 4 Feb 2020 |
2020-02-02 Excel | 4 Feb 2020 |
2020-02-01 PDF | 5 Feb 2020 |
2020-02-01 EXCEL | 5 Feb 2020 |
2020-01-31 PDF | 3 Feb 2020 |
2020-01-31 EXCEL | 3 Feb 2020 |
2020-01-30 pdf | 3 Feb 2020 |
2020-01-30 excel | 3 Feb 2020 |
2020-01-29 pdf | 5 Feb 2020 |
STOR
Name Sort ascending | Published |
---|---|
STOR Market Information report for TR25 v.2 | 10 Jul 2017 |
STOR Market Information for TR26_Appendix V2 | 10 Jul 2017 |
STOR Market Information for TR26 STOR Runway_Appendix | 10 Jul 2017 |
STOR Market Information for TR25_Tables_and_Charts v.2 | 10 Jul 2017 |
STOR Market Information for TR25 STOR Runway - Appendix | 10 Jul 2017 |
STOR Market Information for TR25 - Appendix | 10 Jul 2017 |
STOR Market Information for TR23 - Appendix(1) | 10 Jul 2017 |
STOR Market Information for TR23 - Appendix | 10 Jul 2017 |
STOR Market Information for TR23 | 10 Jul 2017 |
STOR Market Info for TR24 - Appendix | 10 Jul 2017 |
Fast reserve
Name Sort ascending | Published |
---|---|
Fast Reserve Market Report December 2019 | 17 Dec 2019 |
Fast Reserve Market Report December 2018 | 17 Dec 2018 |
Fast Reserve Market Report Data (January 2019) | 19 Nov 2018 |
Fast Reserve Market Report August 2019 | 19 Aug 2019 |
Fast Reserve Market Report August 18 | 20 Aug 2018 |
Fast Reserve Market Report April 2018 | 20 Apr 2018 |
Fast Reserve Market Report - Feb 2018 | 20 Feb 2018 |
Fast Reserve Market Report (March 2019) | 6 Mar 2019 |
Fast Reserve Market Report (April 2019) | 18 Apr 2019 |
Fast Reserve Market Information Report September 2019 | 24 Jul 2019 |
FFR market information reports
Name Sort ascending | Published |
---|---|
FFR Market Information (November 2018) | 26 Sep 2018 |
FFR Market Information (Nov-19) Table | 25 Sep 2019 |
FFR Market Information (Nov-19) | 25 Sep 2019 |
FFR Market Information (Nov-18) Table | 26 Sep 2018 |
FFR Market Information (Nov 17) Table | 27 Sep 2017 |
FFR Market Information (Nov 17) | 27 Sep 2017 |
FFR Market Information (Nov 16) Tables | 23 Sep 2016 |
FFR Market Information (Nov 16) | 23 Sep 2016 |
FFR Market Information (May-19) Table | 26 Mar 2019 |
FFR Market Information (May-18) | 26 Mar 2018 |
FFR pre and post tender
Name Sort ascending | Published |
---|---|
Post assessment Tender Report May 2015 | 19 May 2015 |
Post Assessment Tender Report March 2016 | 16 Mar 2016 |
Post assessment Tender Report June 2015 Final | 16 Jun 2015 |
Post Assessment Tender Report July 2016 | 18 Jul 2016 |
Post Assessment Tender Report July 2015 | 16 Jul 2015 |
Post Assessment Tender Report January 2015 | 19 Jan 2015 |
Post Assessment Tender Report Jan 16(1) | 22 Jan 2016 |
Post Assessment Tender Report Feb 2016 | 16 Feb 2016 |
Post Assessment Tender Report Dec 2015 | 23 Dec 2015 |
Post Assessment Tender Report August 2015 | 18 Aug 2015 |