MP121 Commissioning non-commissioned Devices after CoS

Proposer Paul Saker
Lead Analyst Kev Duddy
Date raised 24/03/2020
StageRefinement Process
Implementation date Unknown
Latest update A Refinement Consultation was issued on 11 June 2021. The deadline for responses passed 2 July 2021. These responses will be collated and discussed with the Working Group 4 August 2021.

What is the issue?

The DCC has a 90-day target to resolve WAN connectivity to ‘reactive install and leave’ installations. The time taken to establish WAN connectivity to ‘proactive install and leave installations is likely to be even longer. These ‘install and leave’ processes and associated obligations are included in the energy Supply Licences. In addition, the Operational Licence conditions require Suppliers to ensure their Devices can communicate with the DCC once WAN is available.
As a result of these timescales there is a risk that the Consumer will change their energy Supplier before WAN connectivity has been established. In these circumstances the gaining Supplier is not currently able to commission the installed Devices. This is because they require the Install Code to enable the installed Devices to be joined to the Home Area Network (HAN) (using Service Reference Variant (SRV)8.11), which needs to occur before the Devices can be commissioned.

What is the solution?

The Proposed Solution is to make Device install codes available to gaining Suppliers of uncommissioned Devices, which prevents the Supplier having to replace the Device in order to provide smart functionality to the newly gained customer. The Supplier will be able to raise an incident via the DCC SSI. The installing Supplier will be notified of the incident and must respond to within five Working Days with the install code for that specific Device. The obligation for the installing Supplier to respond to the SSI incident within five Working Days will be codified into the SEC.

The Alternative Solution also includes an obligation on an installing Supplier to respond to a request for install code within 5 working days. However, the process for the alternate solution would rely on email correspondence for the gaining Supplier to make the request and the installing Supplier to fulfil the obligation, rather than utilising the SSI.

Who is impacted?

Large Suppliers
Small Suppliers

What SEC documents are affected?

SEC Appendix I 'CH Installation and Maintenance Support Materials'


24 Mar 2020
Draft Proposal raised
15 May 2020
Converted to Modification Proposal
01 Jul 2020
First Working Group
12 Apr 2021
DCC Preliminary Assessment
11 Jun 2021
02 Jul 2021
Refinement Consultation

Modification documents

MP121 Refinement Consultation responses
MP121 June 2021 Working Group summary
MP121 Refinement Consultation
MP121 DCC Preliminary Assessment
MP121 September 2020 Working Group meeting summary
MP121 Business Requirements
MP121 Modification Report
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