SEC v39.0 implemented to update the SMKI Interface Design Specification

16 June 2021

An updated version of the SEC came into effect today, 16 June 2021, to implement a designation made by the Department for Business, Energy and Industrial Strategy (BEIS).

This includes an update to SEC Appendix M ‘Smart Metering Key Infrastructure (SMKI) Interface Design Specification’ (SMKI IDS) to simplify the process by which Certificate Signing Requests can be submitted by those accessing the SMKI service over the internet.

  • The BEIS direction letter can be found on our latest news page here.
  • The redlining can be found here.


What parts of the SEC were affected?

  • SEC Appendix M ‘SMKI Interface Design Specification’


Our Document Log lists the versions of each SEC document now in effect following this release.

You can download the individual SEC documents from the SEC and Supporting Documents section of our website or via CodeWorks.


Where can I find further information?

If you have any questions, you can call the SECAS Helpdesk at 020 7090 7755 or email