SECMP0038 Sending Commands via PPMIDs

Proposer Andy Knowles
Lead Analyst Joe Hehir
Date raised 01/06/2017
StageRefinement Process
Implementation date Unknown
Latest update The Working Group and the SSC concluded that the proposed solution would not be viable due to its security implications. This modification has been placed on hold and superseded by DP094.

What is the issue?

As a main Pre-Payment Meter Supplier, Utlita’s customer base tends to be mainly in populous areas which usually have good signals; the risk of unpredictable or poor WAN must be considered higher in less populous areas. This is especially critical for prepayment customers, since configuration Commands affect supply of energy to their homes. It is not viable to wait for an uncertain period for Wide Area Network (WAN) quality to increase sufficiently, before their supply issues are addressed. SMETS1 solutions to address this problem have been developed and refined over 15 years, but the Proposer indicates that there are no current SMETS2 solutions, other than sending an engineer with a Hand-Held Terminal (HHT) to the Consumer’s Premises.

What is the solution?

This modification seeks to offer the option for Prepayment Meter Interface Devices (PPMIDs) to be able to pass fully formed Great Britain Companion Specification (GBCS) Remote Party Commands onto the Home Area Network (HAN). It is expected that the Commands would usually be routed from the Supplier to the PPMID via Wi-Fi connectivity.

Who is impacted?

Large Suppliers
Small Suppliers
Other SEC Parties


01 Jun 2017
Modification Proposal raised
08 Aug 2017
Working Group meeting
16 Oct 2017
02 Jul 2018
DCC Preliminary Assessment
10 Sep 2018
Working Group meeting
25 Oct 2018
Working Group meeting
26 Feb 2019
Working Group meeting

Modification documents

SECMP0037/SECMP0038 February 2019 Working Group meeting summary
Issue SEC0009/SECMP0032/SECMP0038 October 2018 Working Group meeting summary
SECMP0031/SECMP0038 September 2018 Working Group meeting summary
SECMP0038 Solution Design Specifications
SECMP0038 August 2017 Working Group meeting summary
SECMP0038 Initial Modification Report
SECMP0038 Modification Proposal
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