MP134A approved and implemented in SEC v47.0

4 October 2021

On 1 October 2021, the Authority decided to approve MP134A ‘Use of SMKI Certificates relating to a SoLR event’. An updated version of the SEC came into effect on 4 October 2021 to implement MP134A.

The Authority Decision letter can be found on the MP134A page of our website.


What is the solution?

In a Supplier of Last Resort (SoLR) event, MP134A enables the Smart Metering Key Infrastructure (SMKI) Policy Management Authority (PMA) to delay the revocation of the SMKI Certificates. This would allow a Shared Resource provider (SRP) to put prepayment customers into a ‘safe mode’ where they will not lose supply if they run out of credit.


What parts of the SEC were affected?

The following parts of the SEC were affected:

  • SEC Section A ‘Definitions and Interpretation’
  • SEC Section L ‘Smart Metering Key Infrastructure and DCC Key Infrastructure’
  • SEC Section M ‘General’
  • SEC Appendix B ‘ Organisation Certificate Policy’
  • SEC Appendix Q ‘IKI Certificate Policy’
  • SEC Appendix S ‘DCCKI Certificate Policy’


Where can I access the redlining?

The redlined changes can be found on CodeWorks via the links below:


The redlining for Appendix B and Appendix Q can be found here.

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?

Further information can be found on the MP134A page of our website. If you have any questions, you can call the SECAS Helpdesk at 020 7090 7755 or email