Sharing of SSC and TPR Information for MHHS Smart and Advanced Meters
Date of latest update
Type
Issue
ID
I0273
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
23/06/2026 - The Code Manager has published an Interim Guidance Document for I0273.
Summary
In the MHHS design the Standard Settlement Configuration (SSC) is a non-mandatory data item for Smart and Advanced metering points, in addition the register level TPR information is not shared in the MTD flows for these meters (IF-006 for Smart and D0268 for Advanced). It was identified through BSC Issue I118 that there is a requirement for the SSC to be set for Domestic / Microbusiness Advanced Metering Points making use of the HH data opt out and there may be other areas where the SSC is required.
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0273 - Interim Guidance Document V1.1
Archive
Off
Problem Statement
The MHHS design does not mandate the use of SSC or support register-level TPR data for Smart and Advanced Meters, creating gaps in data availability for certain Settlement scenarios.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0273 Submission Form
I0273 - Update to Plan V2.0 (Pre-Approval) 06.05.2026
Company Name
-
Review status
Review required
Smart Meter Installation Surveys - Microbusiness requirements
Date of latest update
Type
Change
ID
R0267
Change Category
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the June 2026 REC Release.
Summary
There is no requirement for energy suppliers planning fewer than 5000 Smart meter installations at domestic premises, within a calendar year, to survey Consumers for REC compliance purposes. Conversely, there is no minimum threshold in place for microbusiness installations, meaning that non-domestic suppliers are required to procure a suitably qualified, independent Smart Meter Installation Survey Organisation, at considerable cost, to survey what might be a very small number of customers.
Change Plan
Change Report (Proposal Plan) approved by Change Panel
Completed
Start:
Due:
Completion:
19 Aug 2025Impacted REC Parties and Market Participants
Status
Status
Implementation Date
26 June 2026
| Included changes | Affected REC Items | |
|---|---|---|
| R0103 | Central provision of DCC Technical Contacts for requesting test certificates |
|
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0267 CoMCoP Appendix 20 draft V0.1
Archive
Off
Document title
R0267 CoMCoP Appendix 20 draft V0.2
Archive
Off
Problem Statement
Non-Domestic Energy Suppliers are having to procure an independent Smart Meter Installation Survey Organisation, at considerable cost, to survey what might be a very small number of Consumers to be compliant with their REC obligations.
Stages Selection
SME
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
I0267 Submission form
I0267 Change Report (Proposal Plan) V1.1
I0267 Extension to Plan V1.0
I0267 Consolidated Impact Assessment Responses PUBLIC v1.0
R0267 Change Report (For Consultation) V1.0
R0267 Consolidated Consultation Responses PUBLIC v1.0
R0267 Change Report (Final Recommendation) V1.0 approved 07.04.26
R0267 Decision Document
Company Name
-
Review status
Review required
Missing Scenario Variants in D0179 Alternate Solution
Date of latest update
Type
Change
ID
R0235A
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
Within MHHS SIT there is a scenario where the LDSO generates a D0139 to the MS for a PPM but the requirement is for the MS to generate a D0179. There is a gap in the D0179 data required and that provided on the D0139. 21.5.1 & 21.5.6 under Schedule 14 states that where the DNO changes the energisation status, within 3 WD of changing the energisation status the DNO will send the D0139 or the D0179(21.5.6) to the MS and then the MS will generate the D0179 to the Supplier(21.5.6). Currently, the LDSO only generates the D0179 to the Supplier but not to the MOP and the only change under MHHS is to add the new variant MSS.
Original CP
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0235A Schedule 14 - Metering Operations current draft
Archive
Off
Document title
R0235A Schedule 14 - Metering Operations MHHS draft
Archive
Off
Problem Statement
DNOs and MOAs cannot fulfil their full obligations listed in Schedule 14 Metering Operations as there missing Scenario Variants in the Data Specification preventing them from sending the D0179 to all required Parties. This alternate solution proposes the removal of the D0179 from the legal text and the D0139 to be used in all scenarios.
Stages Selection
R0235A Change Proposal form
R0235 and R0235A Change Report (Final Recommendation) V2.0 (Approved) 01.07.2025
Company Name
-
Review status
Review required
Increasing frequency of Annual portfolio reconciliation exercise to support Data Cleanse
Date of latest update
Type
Change
ID
R0252
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
02/09/26 - An update to plan has been published for consideration at MEP on 09 September 2026.
Summary
This Issue seeks to explore making changes to both the frequency and turnaround time of the annual portfolio reconciliation exercise conducted by the CDSP.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0252 Legal Drafting V2.0
Archive
Off
Problem Statement
The annual portfolio reconciliation exercise conducted by the CDSP on MAM-held Data Items is neither frequent enough nor is it expeditious enough, according to the Proposer. MAMs are being asked to reconcile Data Items several months after they were initially provided, which may impact the efficacy of the exercise if these Data Items have changes since they were initially submitted.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
awaghorn@deloitte.co.uk
SME Role
Lead Assurance Analyst
R0252 - Issue Proposal V1.0
R0252 Change Proposal Re-Plan (Approved) V1.0 21.10.25
R0252 - Change Report (Plan) (Approved) V3.0 04.02.26
R0252 Change Proposal Re-Plan (Approved) V2.0 27.01
R0252 - Change Report (IA) V1.0 12.02.26
R0252 Change Proposal Re-Plan V3.0
R0252 Change Proposal Re-Plan V4.0
Company Name
-
Review status
Review required
REC Changes to tie in with DCP451 - Suspending Registrations
Date of latest update
Type
Change
ID
R0248
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
A DCUSA Change Proposal - DCP 451 ‘Suspending Registrations’ - has been raised to look into this issue. The solution must consider a cross-code solution, which does not put consumer outcomes at risk.
Change Plan
Change Report (Proposal Plan) approved by Change Panel
Completed
Start:
Due:
Completion:
17 Jun 2025Change approved
Completed
Start:
Due:
Completion:
05 Aug 2025Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Date
07 November 2025
| Included changes | Affected REC Items | |
|---|---|---|
| R0003 | Market-wide Half-Hourly Settlement Implementation |
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0248 Switching Data Management draft
Archive
Off
Problem Statement
A lack of clarity on the process for when a DNO ends a Regulatory Alliance with an Energy Supplier can cause confusion with the Energy industry, and lead to poor Consumer outcomes if the correct process is not followed.
Stages Selection
SME
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Issue proposal form
I0248 Change Report (Proposal Plan) V1.0
R0248 Change Report (For Consultation) v1.0
R0248 Consolidated Consultation Responses V1.0
R0248 Change Report (Final Recommendation) V1.0 - approved 05.08.25
Company Name
-
Review status
Review required
Effective Dates in EES
Date of latest update
Type
Issue
ID
I0247
Other Industry Codes impacted
Urgent
No
Latest Update
12/08/2026 - the Proposer has chosen to withdraw this Issue as MHHS means many of the effective dates are being updated as per the original business case so the change is no longer required.
Summary
On a switch many of the effective dates within EES default to the switch date. This includes energisation status. It means EES users that don't have access to the meter technical details do not know the actual date the status changed.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
Stages Selection
Proposal Form
Company Name
-
Review status
Review required
Transfer of Standard Settlement Configuration and Time Pattern Regime Data Item Ownership
Date of latest update
Type
Change
ID
R0243
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
From MHHS go live (M8), responsibility for maintaining the SSC and TPR valid set will transfer to the REC Code Manager. Without an associated change to ownership of the specific data items, cross governance issues will arise delaying the resolution of future changes to the use of SSC and TPR data in enduring retail processes.
Change Plan
Change Report (Proposal Plan) published
Completed
Start:
12 Feb 2025Due:
29 Jul 2025Completion:
29 Jul 2025Proposal Plan approved
Completed
Start:
29 Jul 2025Due:
05 Aug 2025Completion:
05 Aug 2025Impacted REC Parties and Market Participants
Status
Implementation Date
07 November 2025
| Included changes | Affected REC Items | |
|---|---|---|
| R0003 | Market-wide Half-Hourly Settlement Implementation |
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0243 - Data Items REDLINED
Archive
Off
Problem Statement
From MHHS Go Live at MHHS Milestone M8 ‘Code changes delivered’, responsibility for maintaining the SSC and TPR valid sets will transfer to the REC Code Manager. Without an associated change to ownership of the specific Data Items, cross governance issues will arise delaying the resolution of future changes to the use of SSC and TPR data in enduring retail processes.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal form
R0243 Change Report (Proposal Plan) v1.0 APPROVED 05.08.2025
R0243 Change Report (Consultation) v1.0 11.08.2025
R0243 Consolidated Consultation Responses PUBLIC v1.0
R0243 Change Report (Final Recommendation) v1.0 approved 24.09.25
Company Name
-
Review status
Review required
Erroneous Switch Review: CSS Solution
Date of latest update
Type
Issue
ID
I0237
Change Category
Change Path
Priority
Urgent
No
Latest Update
26/06/2026 On 25 June 2026, the REC Change Panel approved this extension to plan.
Summary
The current solution for Erroneous Switch (ES) resolution is failing some Consumers, there are gaps in the process and several areas that could be considered for improvement. It has been a number of years since the process has been reviewed end to end. Since then, Faster Switching has been introduced and MHHS is on the horizon.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0237 Erroneous Switch Draft Guidance Document V0.2
Archive
Off
Problem Statement
ES obligations are a key Consumer-impacting process which facilitate the quick resolution of Consumer detriment as efficiently as possible and requires an end-to-end review.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
vaishnsharma@deloitte.co.uk
Change proposal Form
I0237 - Change Report (Proposal plan) Approved 17.06.2025
I0237 Change Proposal Re Plan V2.0
I0237 Extension to Plan V1.0 Approved 25.06.2026
Company Name
-
Review status
Review required
Missing Scenario Variants in D0179
Date of latest update
Type
Change
ID
R0235
Change Category
Change Path
Priority
Urgent
No
Latest Update
01/07/2025 - On 01 July 2025, the REC Change Panel voted to reject R0235 and approve R0235A, in line with the Code Manager's recommendation. The appeal window has closed.
Summary
Within MHHS SIT there is a scenario where the LDSO generates a D0139 to the MS for a PPM but the requirement is for the MS to generate a D0179. There is a gap in the D0179 data required and that provided on the D0139. 21.5.1 & 21.5.6 under Schedule 14 states that where the DNO changes the energisation status, within 3 WD of changing the energisation status the DNO will send the D0139 or the D0179(21.5.6) to the MS and then the MS will generate the D0179 to the Supplier(21.5.6). Currently, the LDSO only generates the D0179 to the Supplier but not to the MOP and the only change under MHHS is to add the new variant MSS.
Change Plan
Change Report (Proposal Plan) approved by Change Panel
Completed
Start:
Due:
Completion:
04 Mar 2025Presented at Change Issues Group
Completed
Start:
Due:
Completion:
06 Mar 2025Presented at Change Issues Group
Completed
Start:
Due:
Completion:
01 May 2025Presented at REC Change Panel
Completed
Start:
Due:
Completion:
20 May 2025Alternative Change Proposals
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0235 D0179 Missing Scenario Variants
Archive
Off
Document title
R0235 Data Specification V0.2
Archive
Off
Problem Statement
DNOs and MOAs cannot fulfil their full obligations listed in Schedule 14 Metering Operations as there missing Scenario Variants in the Data Specification preventing them from sending the D0179 to all required Parties.
Stages Selection
I0235 Change Proposal Form
I0235 Change Report (Proposal Plan) V1.0 Approved 04.03.25
I0235 Consolidated Impact Assessment Responses V1.0
R0235 and R0235A Change Report (For Consultation) V1.1
R0235 and R0235A Consolidated Consultation Responses PUBLIC V1.0
R0235 and R0235A Change Report (Final Recommendation) V2.0 (Approved) 01.07.2025
Company Name
-
Review status
Review required
Non-Domestic Change of Occupier SDEP Screens (R0155 Solution)
Date of latest update
Type
Change
ID
R0232
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
This Issue has been raised to develop the dedicated Non-Domestic Change of Occupier SDEP screens that were not possible as part of R0155 – Change of Occupier: Evidentiary Standards and Timescales. Should this Issue progress with a developed solution, the new dedicated Non-Domestic Change of Occupier screens would replace the temporary work around provided as a temporary workaround in the R0155 solution.
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
07 November 2025
| Included changes | Affected REC Items | |
|---|---|---|
| R0003 | Market-wide Half-Hourly Settlement Implementation |
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- The solution will be developed through the Change Issues Group. Attendees will be invited to discuss and determine the requirements for the dedicated Non-Domestic Change of Occupier SDEP screens (a separate screen will be required for both Gas and Electricity). The solution will also require reporting for Performance Assurance and will include a plan for queries raised at cut over and data retention obligations. To help drive those discussions a starting point could be as follows: • Meter Point X Number (MPxN) • Multi MPxN flag – i.e. are there more than one • Date of CoO • Number of attachments • Accept evidence - Y / N – only available to the receiving supplier • Additional info – must be populated if N Auto populate: • Date of creation, date of response. • The Service Level Agreement (SLA) is 10 Working Days so it will need the RAG status based on that. Escalations screens – as per the standard REC escalations – including MPxN, date of creation and number of attachments. As part of any solution, the Code Manager will also update the non-mandatory Non-Domestic Change of Occupier Guidance Document to include further details on the newly dedicated SDEP screens, as well as further training material for Energy Suppliers.
Problem Statement
Due to the MHHS Code Freeze, newly dedicated Non-Domestic Change of Occupier SDEP screens could not be implemented as part of the R0155 solution and instead the use of re-purposed, existing screens was proposed as a temporary workaround. Energy Suppliers were clear in their responses to the R0155 impact assessment and consultation that using a temporary work around (with the temporary solution being the use of existing screens PT0056 and PT0067) would create additional workload and risk and that newly dedicated SDEP screens for Non-Domestic Change of Occupiers would still be required.
Stages Selection
SME
SME Role
Lead Technical Analyst
I0232 - Non-Domestic Change of Occupier SDEP Screens (R0155 Solution) - Issue form
I0232 - Non-Domestic Change of Occupier SDEP Screens (R0155 Solution) - Change Report (Proposal Plan) V2.0 (17.06.2025)
I0232 - Non-Domestic Change of Occupier SDEP Screens (R0155 Solution) - Change Report (Impact Assessment) 13.03.2025
R0232 - Non-Domestic Change of Occupier SDEP Screens (R0155 Solution) - Change Report (For Consultation) 05.08.2025
I0232 - Consolidated Impact Assessment Responses (Non-Confidential) 08.04.2025
R0232 - Non-Confidential Consolidated Consultation Responses (02.09.2025)
R0232 - Change Report (Final Recommendation) V2.0 (Approved) 16.09.2025
SDEP User Training Deck v2.0
I0232 - Extension to Plan V1.0 (06.06.2025) Approved
Company Name
-
Review status
Review required