SEC version 6.21 Designated – November 2019 SEC Release

29 November 2019

SEC version 6.21 came into effect on 29 November 2019 to implement ten Modification Proposals as part of the November 2019 SEC Release.


What modifications were implemented?

This SEC Release implemented the following modifications:


What parts of the SEC were affected?

The following parts of the SEC have been updated:

  • Section J ‘Charges’
  • Section K ‘Charging Methodology’
  • Section L ‘Smart Metering Key Infrastructure and DCC Key Infrastructure’
  • Appendix D ‘SMKI Registration Authority Policies and Procedures’
  • Appendix E ‘DCC User Interface Services Schedule’
  • Appendix K ‘SMKI and Repository Test Scenarios Document’
  • Appendix M ‘SMKI Interface Design Specification’
  • Appendix N ‘SMKI Code of Connection’
  • Appendix Q ‘IKI Certificate Policy’
  • Appendix AC ‘Inventory, Enrolment and Decommissioning Procedures’
  • Appendix AD ‘DCC User Interface Specification’
  • Appendix AF ‘Message Mapping Catalogue’

The redlined changes to these documents can be downloaded here.

Previously designated changes to Schedule 8 ‘GB Companion Specification’, Schedule 9 ‘Smart Metering Equipment Technical Specifications’ and Schedule 10 ‘Communications Hub Technical Specifications’ for this release also became effective from 29 November 2019.

You can download a zip folder containing SEC v6.21 here, or download the individual documents from the SEC and Supporting Documents section of our website or via CodeWorks.


Where can I find further information?

Further information can be found on the November 2019 SEC Release page of our website. If you have any questions, you can call us at 020 7090 7755 or email