SEC v58.0 implemented to support the DCC SMETS1 service

15 March 2022

On 15 March 2022, an updated version of the SEC came into effect to re-designate SEC Appendix AL ‘SMETS1 Transition and Migration Approach Document’. This is in support of the Data Communications Company (DCC) Smart Metering Equipment Technical Specifications (SMETS) 1 service.

The 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’


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