MP185 approved and implemented in SEC v52.0

17 November 2021

On 16 November 2021, the Authority decided to approve MP185 ‘Additional controls to support the SoLR process’. An updated version of the SEC came into effect on 17 November 2021 to implement MP185.

The Authority Decision letter can be found on the MP185 page of our website.

In a Supplier of Last Resort (SoLR) event, MP185 allows the Smart Metering Key Infrastructure (SMKI) Policy Management Authority (PMA) the authority to delay, where appropriate, the transfer of the Market Participant Identifiers (MPIDs) of the failed Supplier to the SoLR. The transfer of the MPIDs to the SoLR would need to be agreed with the SMKI PMA and the Data Communications Company (DCC) by the SoLR once they have an agreed set of information.


What parts of the SEC were affected?

The following parts of the SEC were affected:

  • SEC Section A ‘Definitions and Interpretation’
  • SEC Section B ‘Accession’
  • SEC Section L ‘Smart Metering Key Infrastructure and DCC Key Infrastructure’


Where can I access the redlining?

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


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 MP185 page of our website. If you have any questions, you can call the SECAS Helpdesk at 020 7090 7755 or email