SEC Version 6.14 Designated

20 June 2019

On 21 June 2019, SEC Appendix AL ‘SMETS1 Transition and Migration Approach Document’ (TMAD) will be re-designated by the Department for Business, Energy and Industrial Strategy (BEIS).

On 3 May 2019 the DCC published a consultation on amendments to the TMAD which closed on 24 May 2019. The DCC consulted, on behalf of BEIS, on a proposed date for re-designation of 10 June 2019 or, if necessary, as soon as reasonably practicable within one month thereafter.

BEIS have concluded that it is appropriate to re-designate the TMAD as Version 1.2 from 21 June 2019.

The Government response to this consultation and associated documents, including the approved TMAD and redlining can be found here.


Where can I find further information?

You can download a zip folder containing SEC v6.14 here, or download the individual sections of the SEC from the SEC and Guidance Documents page of our website.

If you have any questions or would like to discuss the changes to the SEC further, please contact the SEC Change Team on 020 7090 7755 or email