C9 statements and consultations
We are required to establish statements and guidelines in accordance with special condition C9 of the statements of the NESO licence. On this page you will find all C9-related documents, including consultations.
Please note: as a result of the licence changes arising from the transition to NESO, the statements previously found under C16 of the transmission licence are now found under C9. The statements on this page currently refer to C16 as this was the correct licence condition at the time of consultation
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Here you can find the latest versions of C9-related statements including the Balancing Principles Statement Report and guidelines.
Latest versions
Here you can find previous versions of C9-related statements and guidelines.
Procurement Guidelines
Balancing services adjustment data (BSAD)
Balancing principles statement report
By accessing these reports, you are agreeing to our terms and conditions.
System management action flagging
System management action flagging (SMAF) report
| Name | Published Sort ascending |
|---|---|
| SMAF Flagging Accuracy Report 2016-17 | 6 Jul 2017 |
| SMAF Flagging Accuracy Report 2015-16 | 26 May 2017 |
| SMAF Flagging Accuracy Report 2012-13 | 31 Oct 2013 |
| SMAF Flagging Accuracy Report 2011-12 | 31 Oct 2013 |
| SMAF Flagging Accuracy Report 2010-11 | 31 Oct 2013 |
Applicable balancing services volume data (ABSVD)
Balancing Principles Statement
On an annual basis, we undertake consultations in respect of the C9 statements. Where applicable we may be required to undertake additional consultations outside of the standard annual review.
Consultation videos
| Name | Published |
|---|---|
| Local Constraints Market Price Adjustment Mechanism | 02 Sep 2024 |
Consultation documents
2023-24
2021-22
2020-21
2019-20
2018-19
2017-18
2017 ABSVD Informal
2016-17
| Name | Published Sort ascending |
|---|---|
| APPENDIX E Change Marked BPS Effective from 1 April 2017 | 18 Aug 2017 |
| APPENDIX C Change Marked Procurement Guidelines Effective from 1 April 2017 | 18 Aug 2017 |
| APPENDIX A Change Marked ABSVD from 1 April 2017 | 18 Aug 2017 |
| C16-CONSULTATION-1617-v1 0 | 18 Aug 2017 |
| APPENDIX E-BPS | 18 Aug 2017 |
| APPENDIX B-BSAD | 18 Aug 2017 |
| APPENDIX F - RESPONSE PROFORMA | 18 Aug 2017 |
| APPENDIX G ENGIE Response | 4 Apr 2017 |
2015-16
| Name | Published Sort ascending |
|---|---|
| APPENDIX D-SMAF | 19 Oct 2017 |
| APPENDIX E-BPS | 19 Oct 2017 |
| APPENDIX I-SMAF Revised | 19 Oct 2017 |
| APPENDIX G - Industry Responses | 19 Oct 2017 |
| APPENDIX E-BPS(1) | 19 Oct 2017 |
| APPENDIX C-PG(1) | 19 Oct 2017 |
| APPENDIX A-ABSVD(1) | 19 Oct 2017 |
2014-15
| Name | Published Sort ascending |
|---|---|
| New Balancing Services Open Letter 14.07.14 | 19 Oct 2017 |
| APPENDIX-A-BSAD-V10_0-1415 | 19 Oct 2017 |
| C16-CONSULTATION-1415-v1_0 | 19 Oct 2017 |
| APPENDIX D - RESPONSE PROFORMA | 19 Oct 2017 |
| APPENDIX B - SMAF | 19 Oct 2017 |
| C16-INTERIM-CONSULTATION-2015 | 19 Oct 2017 |
| APPENDIX A - BSAD_Post Consultation Change Marked | 19 Oct 2017 |
| APPENDIX D - Consultation Document | 19 Oct 2017 |
| RTA-C16-INTERIM-CONSULTATION-2015 | 19 Oct 2017 |
2013-14
| Name | Published Sort ascending |
|---|---|
| RTA-APP-G-2-COMBINED | 18 Oct 2017 |
| Annex 1 - Response Proforma | 18 Oct 2017 |
| APPENDIX-E-RESPONSE-PROFORMA | 18 Oct 2017 |
| APPENDIX-C-PG-V13_0 | 18 Oct 2017 |
| APPENDIX-A-ABSVD-v5_0 | 18 Oct 2017 |
| C16-CONSULTATION-1314-v1_0 | 18 Oct 2017 |
| APPENDIX-B-BSAD-V8_0 October 13 | 18 Oct 2017 |
| APPENDIX-D-SMAF-V3_0 October 13 | 18 Oct 2017 |
| APPENDIX-G-PG-V12_0 October 13 | 18 Oct 2017 |
| APPENDIX-J-BSAD-V8_0 October 13 | 18 Oct 2017 |
2012-13
| Name | Published Sort ascending |
|---|---|
| C16 Consultation Report Annexes | 18 Oct 2017 |
| C16 Consultation Dec 2012 | 18 Oct 2017 |
| C16 Consultation Report | 18 Oct 2017 |
2011-12
| Name | Published Sort ascending |
|---|---|
| C16 - Appendix J BSAD | 18 Oct 2017 |
2010-11
2009-10
| Name | Published Sort ascending |
|---|---|
| Ofgem Direction 19 May 2009 – cat5 PGs and BPS consultation | 18 Oct 2017 |
| Worked examples for cat5 intertrip service | 18 Oct 2017 |
| C16 Consultation document - 16 January 2009 | 18 Oct 2017 |
| C16 PG Appendix C - 'cat 5' | 18 Oct 2017 |
| BSAD - Appendix E | 18 Oct 2017 |
| C16 Appendix C PGs technical changes | 18 Oct 2017 |
| C16 Authority Report - Appendix D | 18 Oct 2017 |
| C16 Appendix D BPS technical changes | 18 Oct 2017 |
| C16 Consultation Document - 16 January 2009 | 18 Oct 2017 |
| Appendix B - BSAD P217A | 18 Oct 2017 |
These documents outline the GB methodology for commercial arrangements for payments relating to interconnector (IC) capacity restrictions resulting from NTC restrictions set by National Energy System Operator (NESO). The commercial arrangements in these documents should be applied to:
- all interconnector projects (existing and future) that are connected to the GB transmission system
- capacity calculations made both before and after the firmness deadline
This methodology should be applied in full to ensure consistency of NTC arrangements across all GB connected interconnectors.