SEC Version 6.19 Designated

25 October 2019

The Data Communications Company (DCC) has concluded on the consultation on proposals for the Device Model Combination Tests (DMCT) Process and on provisions for this testing in SEC Appendix AK ‘SEC Variation Testing Approach Document for SMETS1 Services’ (SMETS1 SVTAD). The DCC submitted a conclusions report on this consultation to the Secretary of State including an amended SMETS1 SVTAD and Migration Testing Approach Document for SMETS1 Services (MTAD) on 23 October 2019. This conclusions report is published on the DCC Website here.

Pursuant to Clause 4.2 in the SMETS1 SVTAD, the DCC is modifying the SMETS1 SVTAD and re-designating it into the SEC as Appendix AK along with modifying the MTAD on 25 October 2019.

The DCC’s letter and accompanying annexes can be found here.


Where can I find further information?

  • You can download a zip folder containing SEC v6.19 here, or download the individual sections of the SEC from the SEC and Guidance Documents page on our website.
  • The redlining for this designation can be found here.
  • The approved MTAD can also be found on our Developing SEC webpage here.
  • If you have any questions or would like to discuss these changes to the SEC further, please contact the SEC Change Team on 020 7090 7755 or email