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 |
---|---|
Historic Response BOAs by settlement period - 2015 onwards | 5 Nov 2018 |
Investor_Timeline | 29 Mar 2019 |
MBSS APRIL 2014 | 20 Jul 2015 |
MBSS April 2019 pdf | 31 May 2019 |
MBSS April 2019 V2 | 11 Jun 2019 |
MBSS August 2019 | 30 Sep 2019 |
MBSS DATA APR 14 | 20 Jul 2015 |
MBSS Data April 2019 Excel | 31 May 2019 |
MBSS Data April 2019 V2 | 11 Jun 2019 |
MBSS Data August 2019 | 30 Sep 2019 |
Past MBSS packs
Name Sort descending | Published |
---|---|
2006_07 - MBSS Pack | 17 Nov 2015 |
2013_14 - MBSS Pack | 17 Nov 2015 |
2014_15 - 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 Sort descending | Published |
---|---|
20019-11-11 pdf | 13 Nov 2019 |
2016-06-30 Excel | 4 Jul 2019 |
2017-07-07 Pdf | 8 Jul 2019 |
2017-12-25 excel | 5 Jan 2018 |
2017-12-25 pdf | 5 Jan 2018 |
2017-12-26 excel | 5 Jan 2018 |
2017-12-26 pdf | 5 Jan 2018 |
2017-12-27 excel | 5 Jan 2018 |
2017-12-27 pdf | 5 Jan 2018 |
2017-12-28 excel | 5 Jan 2018 |
STOR
Name Sort descending | Published |
---|---|
Article 18 Ofgem Letter - STOR 3 Feb 2021 Final | 10 Feb 2021 |
STOR - Update for Market Participants | 6 Nov 2018 |
STOR Annual Market Report 2014_2015 | 10 Jul 2017 |
STOR Annual Market Report 2014_2015 Data | 10 Jul 2017 |
STOR Annual Market Report 2016-2017 Data | 20 Dec 2017 |
STOR Annual Report 2016-2017 | 20 Dec 2017 |
STOR Carbon Impact Analysis Report | 10 Jul 2017 |
STOR EBGL Consultation Service Terms Final Draft Redline | 10 Feb 2021 |
STOR End of Year Report 2012_13 | 10 Jul 2017 |
STOR Fuel Type Analysis Summary (By Capacity) - Season 8 3 | 10 Jul 2017 |
Fast reserve
Name Sort descending | Published |
---|---|
Fast Reserve Market Report July | 19 Jul 2018 |
11_Market Report December 2017 | 20 Dec 2017 |
11_Market Report July 2017 | 20 Jul 2017 |
11_Market Report March 2018 | 20 Mar 2018 |
11_Market Report November 2017 | 20 Nov 2017 |
11_Market Report October 2017 | 19 Oct 2017 |
11_Market Report Sept 2017_V2 | 22 Sep 2017 |
1_Market Report Aug 2017 | 18 Aug 2017 |
Fast Reserve 2 week tender requirement | 22 Jun 2018 |
Fast Reserve Market Information (April 2019) | 22 Feb 2019 |
FFR market information reports
Name Sort descending | Published |
---|---|
Anonymised EBR consultation responses - Firm Frequency Response | 20 Jan 2023 |
FFR Market Information (Apr 18) Table | 26 Feb 2018 |
FFR Market Information (Apr 19) | 26 Feb 2019 |
FFR Market Information (Apr-18) | 26 Feb 2018 |
FFR Market Information (Apr-19) Table | 26 Feb 2019 |
FFR Market Information (Aug 16) | 24 Jun 2016 |
FFR Market Information (Aug 16) Tables | 24 Jun 2016 |
FFR Market Information (Aug 17) | 22 Jun 2017 |
FFR Market Information (Aug 17) Tables | 22 Jun 2017 |
FFR Market Information (Aug 19) | 26 Jun 2019 |
FFR pre and post tender
Name Sort descending | Published |
---|---|
FFR -Post Tender Report - March 2018 TR99 - EXT | 16 Mar 2018 |
FFR Post Tender Assessment Report | 16 Jun 2016 |
FFR Post Tender Report - April 2018 TR100 - EXT | 18 Apr 2018 |
FFR Post Tender Report - May 2018 TR101- EXT | 17 May 2018 |
FFR Post Tender Report - TR106 October 2018 EXT | 16 Oct 2018 |
FFR Post Tender Report -APRIL 2017 -V2 EXT | 20 Apr 2017 |
FFR Post Tender Report -APRIL 2017 -V3 EXT | 20 Apr 2017 |
FFR Post Tender Report -MAY 2017 -EXT | 17 May 2017 |
FFR Post Tender Report TR102 - June - EXT | 18 Jun 2018 |
FFR Post Tender Report TR103 - July - EXT | 17 Jul 2018 |