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 December 2019 | 31 Jan 2020 |
MBSS DATA FEB2015 | 20 Jul 2015 |
MBSS Data February 2019 | 27 Mar 2019 |
MBSS Data January 2019 | 8 Mar 2019 |
MBSS Data January 2020 | 28 Feb 2020 |
MBSS Data January 2020 V2 | 9 Mar 2020 |
MBSS Data July 19 | 30 Aug 2019 |
MBSS DATA JUN14 | 20 Jul 2015 |
MBSS Data June 2019 | 31 Jul 2019 |
MBSS Data March 2019 excel | 7 May 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 |
---|---|
2017-12-28 pdf | 5 Jan 2018 |
2017-12-29 excel | 5 Jan 2018 |
2017-12-29 pdf | 5 Jan 2018 |
2017-12-30 excel | 5 Jan 2018 |
2017-12-30 pdf | 5 Jan 2018 |
2017-12-31 excel | 9 Jan 2018 |
2017-12-31 pdf | 9 Jan 2018 |
2018-01-01 excel | 5 Jan 2018 |
2018-01-01 pdf | 5 Jan 2018 |
2018-01-02 excel | 5 Jan 2018 |
STOR
Name Sort descending | Published |
---|---|
STOR Fuel Type Analysis Summary (By Capacity) - Season 8_5 | 10 Jul 2017 |
STOR Markert Information for TR24_Amended | 10 Jul 2017 |
STOR Market Info for TR24 - Appendix | 10 Jul 2017 |
STOR Market Information for TR23 | 10 Jul 2017 |
STOR Market Information for TR23 - Appendix | 10 Jul 2017 |
STOR Market Information for TR23 - Appendix(1) | 10 Jul 2017 |
STOR Market Information for TR25 - Appendix | 10 Jul 2017 |
STOR Market Information for TR25 STOR Runway - Appendix | 10 Jul 2017 |
STOR Market Information for TR25_Tables_and_Charts v.2 | 10 Jul 2017 |
STOR Market Information for TR26 STOR Runway_Appendix | 10 Jul 2017 |
Fast reserve
Name Sort descending | Published |
---|---|
Fast Reserve Market Information (April-18) | 26 Feb 2018 |
Fast Reserve Market Information (August-18) | 22 Jun 2018 |
Fast Reserve Market Information (February 2019) | 12 Feb 2019 |
Fast Reserve Market Information (January 2019) | 19 Nov 2018 |
Fast Reserve Market Information (July-18) | 25 May 2018 |
Fast Reserve Market Information (June-18) | 26 Apr 2018 |
Fast Reserve Market Information (May-18) | 26 Mar 2018 |
Fast Reserve Market Information (October-18) | 24 Aug 2018 |
Fast Reserve Market Information (September-18) | 25 Jul 2018 |
Fast Reserve Market Information Data (April 18) | 26 Feb 2018 |
FFR market information reports
Name Sort descending | Published |
---|---|
FFR Market Information (Aug-18) | 26 Jun 2018 |
FFR Market Information (Aug-18) Table | 26 Jun 2018 |
FFR Market information (August 19) Table | 26 Jun 2019 |
FFR Market Information (Dec 16) | 26 Oct 2016 |
FFR Market Information (Dec 16) Tables | 26 Oct 2016 |
FFR Market Information (Dec 17) | 25 Oct 2017 |
FFR Market Information (Dec 17) Table | 25 Oct 2017 |
FFR Market Information (Dec 18) | 24 Oct 2018 |
FFR Market Information (Dec-18) Table | 24 Oct 2018 |
FFR Market Information (Feb 17) | 23 Dec 2016 |
FFR pre and post tender
Name Sort descending | Published |
---|---|
FFR Post Tender Report TR104 - August 18 - Ext | 16 Aug 2018 |
FFR Post Tender Report TR105 -September 2018 EXT | 18 Sep 2018 |
FFR Tender Update - TR111 update | 14 Feb 2019 |
FRR tender update - Revised Post Tender Report TR107 - EXT | 6 Nov 2018 |
Industry Clarification Letter | 29 Sep 2017 |
Post Assessment Tender Market Report Aug 2016 | 16 Aug 2016 |
Post Assessment Tender Report (Feb 15) | 18 Feb 2015 |
Post Assessment Tender Report (Mar 15) | 17 Mar 2015 |
Post Assessment Tender Report - (Dec 14) v2 | 30 Jan 2015 |
Post Assessment Tender Report - April 2015 | 20 Apr 2015 |