System balancing reports
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 NESO Data Portal.
Please see link below for the location:
| Name | Published Sort ascending |
|---|---|
| MBSS_December_2016 | 21 Feb 2017 |
| MBSS_November_2016 V2 | 17 Jan 2017 |
| MBSS_DATA_NOV16 | 11 Jan 2017 |
| MBSS_November_2016 | 11 Jan 2017 |
| MBSS_DATA_OCT16 | 28 Nov 2016 |
| MBSS_October_2016 | 28 Nov 2016 |
| MBSS_DATA_SEP16 | 28 Oct 2016 |
| MBSS_September_2016 | 28 Oct 2016 |
| MBSS_AUGUST_2016(1) | 4 Oct 2016 |
| MBSS_DATA_AUG16 | 29 Sep 2016 |
Past MBSS packs
Past MBSS packs
From 1st March 2020, Daily balancing costs (BSUoS) files will be published on our new NESO Data Portal.
Please see link below for the daily historic outturn & forecast file:
https://data.nationalenergyso.com/balancing/bsuos-monthly-cost
Please see link below for the daily balancing costs data files:
https://data.nationalenergyso.com/balancing/daily-balancing-costs-balancing-services-use-of-system
Please see link below for the daily balancing costs report files:
| Name | Published Sort ascending |
|---|---|
| 2020-01-17 pdf | 21 Jan 2020 |
| 2020-01-19 PDF | 21 Jan 2020 |
| 2020-01-18 excel | 20 Jan 2020 |
| 2019-01-16 EXCEL | 20 Jan 2020 |
| 2020-01-18 pdf | 20 Jan 2020 |
| 2020-01-16 PDF | 20 Jan 2020 |
| 2020-01-15 pdf | 17 Jan 2020 |
| 2020-01-15 excel | 17 Jan 2020 |
| 2020-01-14 EXCEL | 16 Jan 2020 |
| 2020-01-14 PDF | 16 Jan 2020 |
STOR
Fast reserve
| Name | Published Sort ascending |
|---|---|
| Fast Reserve Market Information Data (August-18) | 22 Jun 2018 |
| Fast Reserve Market Information (August-18) | 22 Jun 2018 |
| Fast Reserve Market Report June 18 | 20 Jun 2018 |
| Fast Reserve Post Assessment WebEx May-18 | 7 Jun 2018 |
| Fast Reserve Market Information (July-18) | 25 May 2018 |
| Fast Reserve Market Information Data (July 18) | 25 May 2018 |
| Fast Reserve Market Report May 18 | 21 May 2018 |
| Fast Reserve Market Information Data (June 18) | 26 Apr 2018 |
| Fast Reserve Market Information (June-18) | 26 Apr 2018 |
| Fast Reserve Market Report April 2018 | 20 Apr 2018 |
FFR market information reports
| Name | Published Sort ascending |
|---|---|
| FFR Market Information (Sep 19) | 23 Jul 2019 |
| FFR Market Information (Aug 19) | 26 Jun 2019 |
| FFR Market information (August 19) Table | 26 Jun 2019 |
| FFR Market Information (July-19) Table | 28 May 2019 |
| FFR Market Information (July 19) EXT | 28 May 2019 |
| FFR Market Information (June 19) Table | 26 Apr 2019 |
| FFR Market Information (June 19) | 26 Apr 2019 |
| FFR Market Information (May-19) Table | 26 Mar 2019 |
| FFR Market Information (May 19) | 26 Mar 2019 |
| FFR Market Information (Apr-19) Table | 26 Feb 2019 |