MP134A Use of SMKI Certificates relating to a SoLR event

Proposer Easton Brown
Lead Analyst Alison Beard
Date raised 29/05/2020
Implementation date 4 October 2021 (ad-hoc Release)
Latest update The Authority approved this Modification on 1 October 2021 and it was implemented on 4 October 2021.

What is the issue?

Only the relevant Supplier (or their agent) holds the SMKI Private Keys that enable Critical Commands, such as Emergency Credit, to be sent and actioned by the meter. It can commonly take between two and four weeks from the point of SoLR appointment for the new Supplier to change the SMKI Certificates and much longer in some instances where there are problems with data and communications. During this time Prepayment meter customers may be off supply.

What is the solution?

The Proposed solution applies mainly where a failing Supplier exits the market without ensuring their PPM customers are protected from losing energy supply. It seeks to enable the SMKI PMA to facilitate the ongoing use of the failed Suppliers SMKI certificates until all PPM customers are protected from loss of supply or the incoming SoLR takes responsibility for those customers.

Who is impacted?

Large Suppliers
Small Suppliers
Other SEC Parties (Shared Resource Providers)

What SEC documents are affected?

Section A 'Definitions and Interpretation'
Section L 'Smart Metering Key Infrastructure and DCC Key Infrastructure'
Section M 'General'
Appendix B 'Organisation Certificate Policy'
Appendix Q 'IKI Certificate Policy'
Appendix S 'DCCKI Certificate Policy'


29 May 2020
Draft Proposal Raised
19 Jun 2020
Converted to Modification Proposal
01 Jul 2020
Modification discussed with Working Group
06 Jul 2020
22 Mar 2021
MP134 split into Part A and B
17 May 2021
07 Jun 2021
Refinement Consultation
29 Jun 2021
Modification Report presented to Change Sub-Committee
30 Jun 2021
19 Jul 2021
Modification Report Consultation
01 Oct 2021
Authority approve Modification
04 Oct 2021
MP134A Implemented

Modification documents

MP134A Authority Decision letter
MP134A Conclusions Report v1.0
MP134A Legal Text v2.0
MP134A Modification Report Consultation responses
MP134A Modification Report Consultation
MP134A Refinement Consultation responses
MP134A Refinement Consultation
MP134A Modification Report v1.0 (Final)
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