For Information: SEC v36.0 implemented to support the DCC SMETS1 service

30 March 2021

An updated version of the SEC came into effect today, 30 March 2021, to implement a designation made by the Department for Business, Energy and Industrial Strategy (BEIS).

This includes regulatory amendments to support the introduction of further changes to the Data Communications Company (DCC) solution to better support the enrolment and subsequent operation of Smart Metering Equipment Technical Specifications (SMETS) 1 meters on the DCC’s network.

The BEIS designation letter and accompanying annexes, including the redlining can be found here.


What parts of the SEC were affected?

  • SEC Appendix AL ‘SMETS1 Transition and Migration Approach Document’
  • SEC Appendix AM ‘SMETS1 Supporting Requirements’


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