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_DATA_JUL16 | 23 Aug 2016 |
| MBSS_July_2016 | 23 Aug 2016 |
| MBSS_DATA_JUN16 | 27 Jul 2016 |
| MBSS_June_2016 | 27 Jul 2016 |
| MBSS_DATA_MAY16 | 27 Jun 2016 |
| MBSS_May_2016 | 27 Jun 2016 |
| MBSS_DATA_APR16 | 27 May 2016 |
| MBSS_APRIL_2016 | 27 May 2016 |
| MBSS_MARCH_2016(1) | 11 May 2016 |
| MBSS_DATA_MAR16 | 26 Apr 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 |
|---|---|
| 2020-01-13 pdf | 14 Jan 2020 |
| 2020-01-13 excel | 14 Jan 2020 |
| 2020-01-10 EXCEL | 14 Jan 2020 |
| 2020-01-11 excel | 14 Jan 2020 |
| 2020-01-11 pdf | 14 Jan 2020 |
| 2020-01-12 pdf | 14 Jan 2020 |
| 2020-01-12 excel | 14 Jan 2020 |
| 2020-01-10 PDF | 14 Jan 2020 |
| 2020-01-04 Excel | 10 Jan 2020 |
| 2020-01-08 Excel | 10 Jan 2020 |
STOR
Fast reserve
| Name | Published Sort ascending |
|---|---|
| Fast Reserve Market Information (May-18) | 26 Mar 2018 |
| Fast Reserve Market Information Data (May 18) | 26 Mar 2018 |
| 11_Market Report March 2018 | 20 Mar 2018 |
| Fast Reserve Market Information Data (April 18) | 26 Feb 2018 |
| Fast Reserve Market Information (April-18) | 26 Feb 2018 |
| Fast Reserve Market Information Data (March 18) v2 | 20 Feb 2018 |
| Fast Reserve Market Information Data (January 18) v2 | 20 Feb 2018 |
| Fast Reserve Market Report - Feb 2018 | 20 Feb 2018 |
| Fast Reserve Market Information Data (February 18)v2 | 20 Feb 2018 |
| Fast Reserve Market Information Data (March 18) | 25 Jan 2018 |
FFR market information reports
| Name | Published Sort ascending |
|---|---|
| FFR Market Information (Apr 19) | 26 Feb 2019 |
| FFR Tender Update - TR111 update | 14 Feb 2019 |
| FFR Market Information Report - March 2019 | 25 Jan 2019 |
| FFR Market Information Report (March-19) Table | 25 Jan 2019 |
| FFR Market Information (February 19) | 20 Dec 2018 |
| FFR Market Information (February 19) Table | 20 Dec 2018 |
| FFR Market Information (January 19) | 26 Nov 2018 |
| FFR Market Information (January 19) Table | 26 Nov 2018 |
| FFR Market Information (Dec 18) | 24 Oct 2018 |
| FFR Market Information (Dec-18) Table | 24 Oct 2018 |