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_JUN17 | 7 Aug 2017 |
MBSS_DATA_JUN16 | 27 Jul 2016 |
MBSS_DATA_JUN15 | 27 Jul 2015 |
MBSS_DATA_JUL17 | 1 Sep 2017 |
MBSS_DATA_JUL16 | 23 Aug 2016 |
MBSS_DATA_JUL15 | 2 Sep 2015 |
MBSS_DATA_JUL14 | 20 Jul 2015 |
MBSS_DATA_JAN18 V2 | 8 Mar 2018 |
MBSS_DATA_JAN18 | 2 Mar 2018 |
MBSS_DATA_JAN17 | 14 Mar 2017 |
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 |
---|---|
2020-01-29 excel | 5 Feb 2020 |
2020-01-28 pdf | 30 Jan 2020 |
2020-01-28 excel | 30 Jan 2020 |
2020-01-27 pdf | 31 Jan 2020 |
2020-01-27 Excel | 31 Jan 2020 |
2020-01-26 pdf | 28 Jan 2020 |
2020-01-26 Excel | 28 Jan 2020 |
2020-01-25 pdf | 28 Jan 2020 |
2020-01-25 Excel | 28 Jan 2020 |
2020-01-24 PDF | 27 Jan 2020 |
STOR
Name Sort ascending | Published |
---|---|
STOR Markert Information for TR24_Amended | 10 Jul 2017 |
STOR Fuel Type Analysis Summary (By Capacity) - Season 8_5 | 10 Jul 2017 |
STOR Fuel Type Analysis Summary (By Capacity) - Season 8 3 | 10 Jul 2017 |
STOR End of Year Report 2012_13 | 10 Jul 2017 |
STOR EBGL Consultation Service Terms Final Draft Redline | 10 Feb 2021 |
STOR Carbon Impact Analysis Report | 10 Jul 2017 |
STOR Annual Report 2016-2017 | 20 Dec 2017 |
STOR Annual Market Report 2016-2017 Data | 20 Dec 2017 |
STOR Annual Market Report 2014_2015 Data | 10 Jul 2017 |
STOR Annual Market Report 2014_2015 | 10 Jul 2017 |
Fast reserve
FFR market information reports
Name Sort ascending | Published |
---|---|
FFR Market Information (May 19) | 26 Mar 2019 |
FFR Market Information (May 18) Table | 26 Mar 2018 |
FFR Market Information (Mar-18) - Update | 30 Jan 2018 |
FFR Market Information (Mar-18) | 25 Jan 2018 |
FFR Market Information (Mar 18) Table - Update | 30 Jan 2018 |
FFR Market Information (Mar 18) Table | 25 Jan 2018 |
FFR Market Information (June 19) Table | 26 Apr 2019 |
FFR Market Information (June 19) | 26 Apr 2019 |
FFR Market Information (Jun-18) Table | 26 Apr 2018 |
FFR Market Information (Jun-18) | 26 Apr 2018 |
FFR pre and post tender
Name Sort ascending | Published |
---|---|
Post Assessment Tender Report April 2016 | 18 Apr 2016 |
Post Assessment Tender Report - April 2015 | 20 Apr 2015 |
Post Assessment Tender Report - (Dec 14) v2 | 30 Jan 2015 |
Post Assessment Tender Report (Mar 15) | 17 Mar 2015 |
Post Assessment Tender Report (Feb 15) | 18 Feb 2015 |
Post Assessment Tender Market Report Aug 2016 | 16 Aug 2016 |
Industry Clarification Letter | 29 Sep 2017 |
FRR tender update - Revised Post Tender Report TR107 - EXT | 6 Nov 2018 |
FFR Tender Update - TR111 update | 14 Feb 2019 |
FFR Post Tender Report TR105 -September 2018 EXT | 18 Sep 2018 |