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).

Transmission Licence C16 Statements can be found on the Transmission Licence C16 page.

Monthly balancing services summaries (MBSS)

Published Sort ascending Name
MBSS_April_2018 pdf
MBSS_DATA_April_2018 Excel
MBSS_DATA_MAR18
MBSS March 2018
Procurement guidelines report 2017 / 18
MBSS_Feb_2018
MBSS_DATA_FEB18
MBSS_APRIL_2016 V2
MBSS_November_2016 V3
MBSS_DATA_JAN18 V2
MBSS_Jan_2018 V2
MBSS_Jan_2018
MBSS_DATA_JAN18
MBSS_Dec_2017
MBSS_DATA_DEC17
MBSS_Nov_2017
MBSS_DATA_NOV2017
MBSS_DATA_OCT2017
MBSS_Oct_2017
MBSS_Sep_2017 V2
MBSS_DATA_SEP17
MBSS_Sep_2017
MBSS_DATA_AUG17
MBSS_Aug_2017
MBSS_DATA_JUL17
MBSS_Jul_2017
MBSS_DATA_JUN17
MBSS_Jun_2017
MBSS_DATA_MAY17
MBSS_May_2017
MBSS_DATA_APR17
MBSS_April_2017
MBSS_DATA_MAR17
MBSS_March_2017
MBSS_February_2017
MBSS_DATA_FEB17
MBSS_DATA_JAN17
MBSS_January_2017 V1
MBSS_DATA_DEC16
MBSS_December_2016
MBSS_November_2016 V2
MBSS_November_2016
MBSS_DATA_NOV16
MBSS_DATA_OCT16
MBSS_October_2016
MBSS_DATA_SEP16
MBSS_September_2016
MBSS_AUGUST_2016(1)
MBSS_DATA_AUG16
MBSS_DATA_JUL16
MBSS_July_2016
MBSS_June_2016
MBSS_DATA_JUN16
MBSS_DATA_MAY16
MBSS_May_2016
MBSS_DATA_APR16
MBSS_APRIL_2016
MBSS_MARCH_2016(1)
MBSS_DATA_MAR16
MBSS_FEBRUARY_2016
MBSS_DATA_FEB16
MBSS_JANUARY_2016
MBSS_DECEMBER_2015
MBSS_DATA_JAN16
MBSS_DATA_DEC15
MBSS_NOVEMBER_2015
MBSS_DATA_NOV15
MBSS_October_2015
MBSS_DATA_OCT15
MBSS_DATA_SEP15
MBSS_September_2015
MBSS_DATA_AUG15
MBSS_August_2015
MBSS_DATA_JUL15
MBSS_July_2015
MBSS_June_2015
MBSS_DATA_JUN15
MBSS_SEPTEMBER_2014
MBSS_DATA_AUG14
MBSS DATA JUN14
MBSS APRIL 2014
MBSS_APRIL_2015
MBSS_DATA_APR15
MBSS FEBRUARY 2015
MBSS_DATA_JAN15
MBSS_OCTOBER_2014
MBSS_DATA_SEP14
MBSS_DATA_JUL14
MBSS DATA MAY14
MBSS DATA APR 14
MBSS_MAY_2015
MBSS_MARCH_2015
MBSS DATA FEB2015
MBSS_NOVEMBER_2014_v2
MBSS_DATA_OCT14
MBSS_AUGUST_2014
MBSS JUNE 2014
MBSS MAY 2014
MBSS_DATA_MAY15
MBSS_DATA_MAR15
MBSS_JANUARY_2015
MBSS_DATA_NOV14

Daily balancing costs (BSUoS)

Published Sort ascending Name
2018-06-15 pdf
2018-06-17 pdf
2018-06-15 excel
2018-06-17 excel
2018-06-14 pdf
2018-06-16 excel
2018-06-14 excel
2018-06-16 pdf
2018-06-13 pdf
2018-06-13 excel
2018-06-11 pdf
2018-06-12 excel
2018-06-11 excel
2018-06-12 pdf
2018-06-09 pdf
2018-06-09 excel
2018-06-08 excel
2018-06-10 excel
2018-06-08 pdf
2018-06-10 pdf
2018-06-04 pdf
2018-06-07 excel
2018-06-06 pdf
2018-06-04 excel
2018-06-05 pdf
2018-06-06 excel
2018-06-07 pdf
2018-06-05 excel
2018-05-31 pdf
2018-06-02 excel
2018-05-31 excel
2018-06-03 pdf
2018-06-02 pdf
2018-06-03 excel
2018-05-26 excel
2018-05-28 pdf
2018-05-26 pdf
2018-06-01 pdf
2018-05-28 excel
2018-06-01 excel
2018-05-27 pdf
2018-05-29 pdf
2018-05-27 excel
2018-05-30 excel
2018-05-29 excel
2018-05-30 pdf
2018-05-22 excel
2018-05-25 pdf
2018-05-22 pdf
2018-05-25 excel
2018-05-21 pdf
2018-05-24 excel
2018-05-20 pdf
2018-05-21 excel
2018-05-20 excel
2018-05-24 pdf
2018-05-19 pdf
2018-05-23 pdf
2018-05-18 pdf
2018-05-19 excel
2018-05-18 excel
2018-05-23 excel
2018-05-13 excel
2018-05-17 excel
2018-05-13 pdf
2018-05-17 pdf
2018-05-14 pdf
2018-05-11 excel
2018-05-14 excel
2018-05-15 excel
2018-05-11 pdf
2018-05-15 pdf
2018-05-09 pdf
2018-05-12 excel
2018-05-09 excel
2018-05-12 pdf
2018-05-10 pdf
2018-05-10 excel
2018-05-06 excel
2018-05-08 excel
2018-05-06 pdf
2018-05-08 pdf
2018-05-05 pdf
2018-05-04 excel
2018-05-02 excel
2018-05-05 excel
2018-05-02 pdf
2018-05-04 pdf
2018-04-27 pdf
2018-04-29 excel
2018-04-27 excel
2018-04-27 excel
2018-04-29 pdf
2018-05-01 pdf
2018-05-01 excel
2018-05-03 pdf
2018-05-03 excel
2018-04-28 excel
2018-04-28 pdf
2018-04-30 excel
2018-04-26 pdf
2018-04-30 pdf
2018-04-26 excel
2018-04-24 pdf
2018-04-25 excel
2018-04-24 excel
2018-04-25 pdf
2018-04-23 pdf
2018-04-23 excel
2018-04-22 pdf
2018-04-18 pdf
2018-04-19 excel
2018-04-20 pdf
2018-04-22 excel
2018-04-20 excel
2018-04-21 pdf
2018-04-18 excel
2018-04-19 pdf
2018-04-21 excel
2018-04-17 pdf
2018-04-17 excel
2018-04-10 pdf
2018-04-13 excel
2018-04-14 pdf
2018-04-11 excel
2018-04-13 pdf
2018-04-15 excel
2018-04-10 excel
2018-04-11 pdf
2018-04-14 excel
2018-04-15 pdf
2018-04-16 pdf
2018-04-16 excel
2018-04-12 pdf
2018-04-12 excel
2018-04-09 excel
2018-04-09 pdf
2018-04-08 excel
2018-04-08 pdf
2018-04-07 pdf
2018-04-07 excel
2018-03-31 excel
2018-04-06 excel
2018-03-31 pdf
2018-04-06 pdf
2018-04-05 excel
2018-04-04 pdf
2018-04-05 pdf
2018-04-04 excel
2018-03-28 pdf
2018-03-30 pdf
2018-03-29 excel
2018-03-28 excel
2018-03-29 pdf
2018-03-30 excel
2018-04-01 excel
2018-04-03 pdf
2018-04-01 pdf
2018-04-02 excel
2018-04-02 pdf
2018-04-03 excel
2018-03-27 excel
2018-03-24 pdf V2
2018-03-27 pdf
2018-03-24 excel
2018-03-25 pdf
2018-03-23 excel
2018-03-24 pdf
2018-03-23 pdf
2018-03-25 excel
2018-03-21 excel
2018-03-22 pdf
2018-03-26 pdf
2018-03-21 pdf
2018-03-26 excel
2018-03-22 excel
2018-03-20 pdf
2018-03-19 excel
2018-03-15 pdf
2018-03-20 excel
2018-03-15 excel
2018-03-17 excel
2018-03-18 pdf
2018-03-16 excel
2018-03-17 pdf
2018-03-16 pdf
2018-03-18 excel
2018-03-14 excel
2018-03-14 pdf
2018-03-11 pdf
2018-03-13 pdf
2018-03-11 excel
2018-03-13 excel
2018-03-12 excel
2018-03-12 pdf
2018-03-10 pdf
2018-03-09 excel
2018-03-10 excel
2018-03-09 pdf
2018-03-08 pdf
2018-03-07 excel
2018-03-06 pdf
2018-03-08 excel
2018-03-06 excel
2018-03-07 pdf
2018-03-05 excel
2018-03-05 pdf
2018-03-04 pdf
2018-02-28 pdf
2018-03-04 excel
2018-03-01 excel
2018-02-28 excel
2018-03-01 pdf
2018-03-02 pdf
2018-03-03 pdf
2018-02-27 pdf
2018-03-02 excel
2018-02-27 excel
2018-03-03 excel
2018-02-06 excel
2018-02-18 pdf
2018-02-11 excel
2018-02-18 excel
2018-02-23 pdf
2018-02-24 excel
2018-02-26 excel
2018-02-23 excel
2018-02-25 pdf
2018-02-26 pdf
2018-02-24 pdf
2018-02-25 excel
2018-02-22 pdf
2018-02-21 excel
2018-02-20 pdf
2018-02-22 excel
2018-02-20 excel
2018-02-21 pdf
2018-02-17 excel
2018-02-19 excel
2018-02-15 pdf
2018-02-16 excel v2
2018-02-17 pdf
2018-02-15 excel
2018-02-17 pdf
2018-02-19 pdf
2018-02-16 pdf
2018-02-14 pdf
2018-02-14 excel
2018-02-12 excel
2018-02-13v2 pdf
2018-02-13 excel
2018-02-12v2 pdf
2018-02-12 pdf
2018-02-13 pdf
2018-02-09 excel
2018-02-11 pdf
2018-02-09 pdf
2018-02-10 excel
2018-02-06 pdf
2018-02-10 pdf
2018-02-08 excel
2018-02-08 pdf
2018-02-07 pdf
2018-02-07 excel
2018-02-03 excel
2018-02-05 excel
2018-02-03 pdf
2018-02-04 pdf
2018-02-05 pdf
2018-02-04 excel
2018-02-02 pdf
2018-02-02 excel
2018-02-01 excel
2018-01-31 pdf
2018-01-31 excel
2018-01-31 excel
2018-02-01 pdf
2018-01-31 pdf
2018-01-25 pdf
2018-01-26 excel
2018-01-25 excel
2018-01-27 pdf
2018-01-26 pdf
2018-01-27 excel
2018-01-29 pdf
2018-01-28 excel
2018-01-29 excel
2018-01-30 pdf
2018-01-28 pdf
2018-01-30 excel
2018-01-23 pdf
2018-01-24 pdf
2018-01-24 Excel
2018-01-23 pdf
2018-01-23 excel
2018-01-20 pdf
2018-01-20 pdf
2018-01-21_Daily_Balancing_Costs
2018-01-20 excel
2018-01-20 excel
2018-01-22 pdf
2018-01-22 excel
2018-01-21_Daily_Balancing_Costs
2018-01-19 pdf
2018-01-17 excel
2018-01-19 excel
2018-01-17 pdf
2018-01-17 pdf
2018-01-18 pdf
2018-01-17 excel
2018-01-18 excel
2018-01-16 pdf
2018-01-16 excel
2018-01-15 excel
2018-01-15 pdf
2018-01-14 excel
2018-01-14 pdf
2018-01-13 excel
2018-01-12 excel
2018-01-13 pdf
2018-01-12 pdf
2018-01-10 pdf
2018-01-11 excel
2018-01-11 pdf
2018-01-10 excel
2018-01-09 pdf
2018-01-09 excel
2018-01-08 excel
2018-01-08 pdf
2018-01-06 excel
2017-12-31 excel
2018-01-06 pdf
2018-01-07 excel
2017-12-31 pdf
2018-01-07 pdf
2018-01-03 excel
2018-01-03 pdf
2018-01-05 pdf
2018-01-05 excel
2017-12-25 pdf
2017-12-29 pdf
2017-12-25 excel
2017-12-29 excel
2017-12-28 excel
2018-01-04 pdf
2017-12-26 pdf
2017-12-30 pdf
2017-12-26 excel
2017-12-30 excel
2017-12-28 pdf
2018-01-02 excel
2017-12-27 pdf
2018-01-01 pdf
2017-12-27 excel
2018-01-01 excel
2018-01-02 pdf
2018-01-04 excel

STOR

Published Sort ascending Name
TR34_MIR_tables_and_charts
STOR TR34 MIR
TR34 Results Appendix v2
TR34 Results Appendix
STOR Annual Market Report 2016-2017 Data
STOR Annual Report 2016-2017
STOR TR33 MIR
TR33_MIR_tables_and_charts
TR33 and Runway Appendix
TR32_MIR_tables_and_charts
TR32_MIR_tables_and_charts - v2
STOR TR32 MIR
TR32 and Runway Appendix - v2 EXT
TR28_MIR_tables_and_charts
TR 28 Appendix
TR27_MIR_tables_and_charts_updated v_2
STOR TR27 MIR_updated v_2
STOR Market Information for TR26_Appendix V2
STOR Market Information report for TR25 v.2
STOR_Annual_Market_Report_2013_14_Data
STOR Fuel Type Analysis Summary (By Capacity) - Season 8_5
STOR Market Info for TR24 - Appendix
STOR Market Information for TR23 - Appendix
TR28_MIR_tables_and_charts_V_2
STOR TR28 MIR
STOR Annual Market Report 2014_2015 Data
TR27_Appendix_updated v_2
STOR TR26 MIR
STOR Market Information for TR26 STOR Runway_Appendix
STOR Market Information for TR25_Tables_and_Charts v.2
STOR Market Information for TR25 - Appendix
STOR Fuel Type Analysis Summary (By Capacity) - Season 8 3
STOR Market Information for TR23 - Appendix(1)
STOR TR28 MIR V_3
STOR Market Information TR22
STOR TR28 MIR V_2
TR28 STOR Runway Appendix
STOR Annual Market Report 2014_2015
TR27 STOR Runway Appendix updated v_2
TR26_MIR_tables_and_charts
STOR Carbon Impact Analysis Report
STOR_Annual_Market_Report_2013_14
STOR Market Information for TR25 STOR Runway - Appendix
STOR Markert Information for TR24_Amended
STOR Market Information for TR23
TR28_MIR_tables_and_charts_V_3
STOR End of Year Report 2012_13
TR32 and Runway Appendix - EXT
STOR TR31 MIR - v2
STOR TR31 MIR
TR31_MIR_tables_and_charts
TR31 and Runway Appendix
TR30_MIR_tables_and_charts - v2
STOR TR30 MIR - v3
STOR TR30 MIR
TR30_MIR_tables_and_charts
STOR TR30 MIR - v2
TR30 STOR Runway Appendix
TR30 Appendix
TR29_MIR_tables_and_charts v2
TR29_MIR_tables_and_charts
STOR TR29 MIR v1
TR29_Appendix

Fast reserve

Published Sort ascending Name
Fast Reserve 2 week tender requirement
Fast Reserve Market Information (August-18)
Fast Reserve Market Information Data (August-18)
Fast Reserve Market Report June 18
Fast Reserve Post Assessment WebEx May-18
Fast Reserve Market Information Data (July 18)
Fast Reserve Market Information (July-18)
Fast Reserve Market Report May 18
Fast Reserve Market Information Data (June 18)
Fast Reserve Market Information (June-18)
Fast Reserve Market Report April 2018
Fast Reserve Market Information Data (May 18)
Fast Reserve Market Information (May-18)
11_Market Report March 2018
Fast Reserve Market Information Data (April 18)
Fast Reserve Market Information (April-18)
Fast Reserve Market Information Data (February 18)v2
Fast Reserve Market Report - Feb 2018
Fast Reserve Market Information Data (January 18) v2
Fast Reserve Market Information Data (March 18) v2
Fast Reserve Market Information Data (March 18)
FR Market Information (March 18)
January Market Report V2
Market Report January 2018
FR Market Information (February 18)
Fast Reserve Market Information Data (February 18)
11_Market Report December 2017
FR Market Information (January 18)
Fast Reserve Market Information Data (January 18)
11_Market Report November 2017
FR Market Information (December 17)
11_Market Report October 2017
FR Market Information (November 17)
11_Market Report Sept 2017_V2
FR Market Information (October 17)
1_Market Report Aug 2017
FR Market Information (September 17)
11_Market Report July 2017
FR Market Information (August 17)
11_Market Report June 2017
FR Market Information (July 17)
11_Market Report May 2017
FR Market Information (June 17)
11_Market Report Apr 2017
FR Market Information (May 17)
11_Market Report Mar 2017
FR Market Information (Apr 17)
11_Market Report Feb 2017
FR Market Information (Mar 17)
11_Market Report Jan 2017
FR Market Information (Feb 17)
11_Market Report Dec 2016
FR Market Information (Jan 17)
11_Market Report Nov 2016
FR Market Information (Dec 16)
11_Market Report Oct 2016
FR Market Information (Nov 16)
11_Market Report Sept 2016
FR Market Information (Oct 16)
11_Market Report Aug 2016
FR Market Information (Sep 16)
11_Market Report July 2016
FR Market Information (Aug 16)
FR Market Information (Jul 16)(1)
11_Market Report May 2016
FR Market Information (Jun 16)
11_Market Report Apr 2016
FR Market Information (May16)
2016_Mar Market Report
FR Market Information (Apr 16)
2016_Feb Market Report
FR Market Information (Mar 16)
2016_Jan Market Report
FR Market Information (Feb 16)
2015_Dec Market Report
FR Market Information (Jan 16)
2015_Nov Market Report
FR Market Information (Dec 15)
2015_Oct Market Report
FR Market Information (Nov 15)
2015_Sept Market Report
FR Market Information (Oct 15)

FFR market information reports

Published Sort ascending Name
FFR Market Information (Jul-18) Table
FFR Market Information (Jul-18)
FFR Market Information (Jun-18)
FFR Market Information (Jun-18) Table
FFR Market Information (May-18)
FFR Market Information (May 18) Table
FFR Market Information (Apr 18) Table
FFR Market Information (Apr-18)
FFR Market Information (Mar-18) - Update
FFR Market Information (Mar 18) Table - Update
FFR Market Information (Mar-18)
FFR Market Information (Mar 18) Table
FFR Market Information (Feb 18) Table
FFR Market Information (Feb 18)
FFR Market Information (Jan 18)
FFR Market Information (Jan 18) Table
FFR Market Information (Dec 17)
FFR Market Information (Dec 17) Table
FFR Market Information (Nov 17)
FFR Market Information (Nov 17) Table
FFR Market Information (Oct 17) Table
FFR Market Information (Oct 17)
FFR Market Information (Sept 17)
FFR Market Information (Sept 17) Table
FFR Market Information (Aug 17) Tables
FFR Market Information (Aug 17)
FFR Market Information (Jul 17)
FFR Market Information (July 17) Tables
FFR Market Information (June 17) Tables
FFR Market Information (Jun 17)
FFR Market Information (May 17)
FFR Market Information (May 17) Tables
FFR Market Information (Apr 17) Tables
FFR Market Information (Apr 17)
FFR Market Information (Mar 17) Tables
FFR Market Information (Mar 17)
FFR Market Information (Feb 17) Tables
FFR Market Information (Feb 17)
FFR Market Information (Jan 17)
FFR Market Information (Jan 17) Tables
FFR Market Information (Dec 16) Tables
FFR Market Information (Dec 16)
FFR Market Information (Nov 16)
FFR Market Information (Nov 16) Tables
FFR Market Information (Oct 16)
FFR Market Information (Oct 16) Tables
FFR Market Information (Sep 16) Tables
FFR Market Information (Sep 16)
FFR Market Information (Aug 16) Tables
FFR Market Information (Aug 16)
FFR Market Information (Jul 16)
FFR Market Information (Jul 16) Tables
FFR Market Information (Jun 16) Tables
FFR Market Information (Jun 16)
FFR Market Information (May 16)
FFR Market Information (Apr 16)
FFR Market Information (Mar 16) Tables
FFR Market Information (Mar 16)
FFR Market Information (Feb 16) Tables
FFR Market Information (Feb 16)
FFR Market Information (Jan 16) Tables
FFR Market Information (Jan 16)
FFR Market Information (Dec 15)
FFR Market Information (Dec 15) Tables
FFR Market Information (Nov 15)
FFR Market Information (Oct 15)
FFR Market Information (Sept 15)
FFR Market Information (Aug 15)

FFR pre and post tender

Published Sort ascending Name
FFR Post Tender Report TR102 - June - EXT
FFR Post Tender Report - May 2018 TR101- EXT
FFR Post Tender Report - April 2018 TR100 - EXT
FFR -Post Tender Report - March 2018 TR99 - EXT
Post Tender report - February 2018 TR98 - EXT
Post Tender Report-January 2018 - TR97 EXT
Post Tender Report-December 2017 - EXT
Post Tender Report-November 2017 - EXT
Post Tender Report-October 2017 - EXT
Post Tender Report-October 2017 - EXT amended
Industry Clarification Letter
Post Tender Report-September 2017 - EXT amended 29_09_2017
Post Tender Report-September 2017 - EXT
Post Tender Report-September 2017 - EXT amended 19.09.2017
Post Tender Report- August 17- EXT
Post Tender Report - June 2017 - EXT Amended 21.07.17
Post tender Report - July 2017- EXT amended 25.07.17
Post Tender Report - June 2017 - EXT Amended 13.07.17
Post tender Report - July 2017- EXT
Post Tender Report - June 2017 - EXT
FFR Post Tender Report -MAY 2017 -EXT
FFR Post Tender Report -APRIL 2017 -V3 EXT
FFR Post Tender Report -APRIL 2017 -V2 EXT
Post Tender Report MARCH 2017 EXT
Post Tender Report FEBRUARY 2017 EXT
Post Tender Report January 2017 - Amended EXT
Post Tender Report January 2017
Post Tender Report December 2016
Post Assessment Tender Report Nov 2016
Post Assessment Tender Report Oct 2016
Post Assessment Tender Report Sept 2016
Post Assessment Tender Market Report Aug 2016
Post Assessment Tender Report July 2016
FFR Post Tender Assessment Report
Post Assessment Tender Report May 2016
Post Assessment Tender Report April 2016
Post Assessment Tender Report March 2016
Post Assessment Tender Report Feb 2016
Post Assessment Tender Report Jan 16(1)
Post Assessment Tender Report Dec 2015
Post Assessment Tender Report November 2015
Post Assessment Tender Report October 2015
Post Assessment Tender Report September 2015
Post Assessment Tender Report August 2015
Post Assessment Tender Report July 2015
Post assessment Tender Report June 2015 Final
Post assessment Tender Report May 2015
Post Assessment Tender Report - April 2015
Post Assessment Tender Report (Mar 15)
Post Assessment Tender Report (Feb 15)
Post Assessment Tender Report - (Dec 14) v2
Post Assessment Tender Report January 2015