SMETS1 Conclusion – Various 1 – Part 1

UPDATE - 6 DECEMBER 2021

Consistent with the requirements set out in Section N6.4 (d) of the SEC, DCC has submitted a further version of the TMAD to the Secretary of State which includes further legal review amendments.

V18.a Draft of the TMAD has been added to this webpage along with delta versions against V18.0 Draft and V17.0.

In October 2021, DCC consulted on a range of SMET1 changes via the SMETS1 Consultation – Various 1.

DCC is now publishing the ‘Part 1’ response to that consultation which concludes on the majority of topics which was submitted to the Secretary of State on 30 November 2021.

In relation to the Various 1 consultation DCC intends to publish the following documents in due course:

• a further Various 1A consultation which re-consults on the proposal to migrate only the electricity meter (within a SMETS1 Installation) and a corresponding exclusion of the gas meter due to HAN related errors (GT01) for Dormant Meters; and
• a separate ‘Part 2’ response that concludes on matters related to a proposal that certain DMCs are uneconomic to test under the DMCT Process a corresponding exclusion for the impacted SMETS1 Installations.

The full list matters covered by this Various 1 Part 1 conclusion are as follows:

(i) amendments to the maximising migration process in the TMAD (as requested by BEIS) and consequential SMETS1 SVTAD amendments;

(ii) proposals for four distinct exclusion categories where migrations will not be pursued:

a. missing master keys;

b. no WAN communications before migration (to support firmware upgrade and configuration);

c. no WAN communications attempting migration; and

d. at least five migration attempts (i.e. consistent failures to migrate);

(iii) a proposal to migrate only the electricity meter (within a SMETS1 Installation) and a corresponding exclusion of the gas meter due to HAN related errors (GT01) for only Active Meters;

(iv) an update on the definition change SMETS1 PPMID changes for FOC; and

(v) extending the TMAD expiry date to be 31 December 2022.