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_MARCH_2015 | 20 Jul 2015 |
| MBSS FEBRUARY 2015 | 20 Jul 2015 |
| MBSS_JANUARY_2015 | 20 Jul 2015 |
| MBSS_NOVEMBER_2014_v2 | 20 Jul 2015 |
| MBSS_OCTOBER_2014 | 20 Jul 2015 |
| MBSS_SEPTEMBER_2014 | 20 Jul 2015 |
| MBSS_AUGUST_2014 | 20 Jul 2015 |
| MBSS_DATA_JUL14 | 20 Jul 2015 |
| MBSS DATA JUN14 | 20 Jul 2015 |
| MBSS MAY 2014 | 20 Jul 2015 |
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 |
|---|---|
| 2019-12-27 Excel | 31 Dec 2019 |
| 2019-12-28 PDF | 31 Dec 2019 |
| 2019-12-29 Excel | 31 Dec 2019 |
| 2019-12-27 pdf | 31 Dec 2019 |
| 2019-12-28 Excel | 31 Dec 2019 |
| 2019-12-29 pdf | 31 Dec 2019 |
| 2019-12-24 Excel | 30 Dec 2019 |
| 2019-12-25 Excel | 30 Dec 2019 |
| 2019-12-26 Excel | 30 Dec 2019 |
| 2019-12-24 pdf | 30 Dec 2019 |
STOR
Fast reserve
FFR market information reports
| Name | Published Sort ascending |
|---|---|
| FFR Market Information (Mar-18) | 25 Jan 2018 |
| FFR Market Information (Feb 18) Table | 22 Dec 2017 |
| FFR Market Information (Feb 18) | 22 Dec 2017 |
| FFR Market Information (Jan 18) Table | 24 Nov 2017 |
| FFR Market Information (Jan 18) | 24 Nov 2017 |
| FFR Market Information (Dec 17) Table | 25 Oct 2017 |
| FFR Market Information (Dec 17) | 25 Oct 2017 |
| FFR Market Information (Nov 17) Table | 27 Sep 2017 |
| FFR Market Information (Nov 17) | 27 Sep 2017 |
| FFR Market Information (Oct 17) Table | 24 Aug 2017 |