Non-Domestic Change of Occupier Reporting (R0155 Solution)
Date of latest update
Type
Change
ID
R0254
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
As part of the R0155 change process, the REC Performance Assurance Board requested ongoing monitoring reporting to identify outliers or anomalous behaviour which the Code Manager would then follow up in detail. However, this planned reporting by Energy Suppliers was descoped from R0155 due to the ongoing development of an Ofgem Reporting Request for Information (titled Non-Domestic Market Monitoring Request for Information). The Ofgem RFI includes data received from Energy Suppliers on the time taken for a Non-Domestic Consumer’s request, and to simplify the process for Energy Suppliers, REC Performance Assurance intend on using the same data. This reduces the need to make two related, but different reports in the same topic areas. The Code Manager intended to use the reporting from the Ofgem RFI for ongoing Performance Assurance monitoring of the Non-Domestic Change of Occupier process. However, this was not confirmed by Ofgem in time for the R0155 implementation, as such a separate REC Change Proposal is required to include this data as part of the ongoing Performance Assurance monitoring.
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
- Incorporating the Ofgem Reporting RFI Non-Domestic Change of Occupier data into the Performance Assurance Reporting Catalogue
- Development of a process to agree data sharing between Ofgem and the REC Code Manager to share allow Ofgem to share the Non-Domestic Change of Occupier data directly with the Code Manager to reduce the burden on Energy Suppliers and save them from having to duplicate submissions
Proposed Solution Document
Document title
Ofgem Non Domestic Market Monitoring RFI template (CoO/CoT Extract) 03.06.2025
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Document title
Copy of PARC V5.15 (23.09.2025)
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Problem Statement
The planned reporting by Energy Suppliers was descoped from R0155 due to the ongoing development of an Ofgem Reporting Request for Information (titled Non-Domestic Market Monitoring Request for Information). Without the Ofgem RFI data being submitted, or an alternative means of receiving or reporting Non-Domestic Change of Occupier data, REC Performance Assurance are unable to complete the ongoing monitoring activity originally requested by the Performance Assurance Board during the R0155 change process.
Stages Selection
Issue Form (Non-Domestic Change of Occupier Reporting).docx
Extract from Ofgem RFI Guidance_March_2025.docx
2025.08 Non Domestic Market Monitoring RFI template 2025 for suppliers
I0254 - Change Report (Proposal Plan) V1.1 (Approved) 03.06.2025
I0254 - Change Report (Impact Assessment) V1.0 03.06.2025
I0254 - Consolidated Party Impact Assessment Responses V1.0 (01.07.2025)
R0254 - Consolidated Consultation Responses (Non-Confidential) V1.0 (18.09.2025)
Company Name
-
Review status
Review required
Theft - DNO/Networks not providing photos
Date of latest update
Type
Change
ID
R0253
Change Category
Change Path
Priority
Urgent
No
Latest Update
17/03/26 - The appeal window has closed. No appeal was raised, and the Change will therefore be released in November 2026.
Summary
This Change seeks to introduce an obligation for a Network Party attending sites with suspected or actual Energy Theft to take photographs of the tampered Metering Asset, to be made available to the Energy Supplier upon request.
Impacted REC Documents
Status
Status
Implementation Date
06 November 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0253 Draft Legal Text (Schedule 8) V1.0 14.10.25
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Document title
R0253 Draft Legal Text (Schedule 8) V2.0 13.01.26
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Document title
R0253 Draft Legal Text (Schedule 8) V3.0 20.02.26
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Document title
R0253 Legal Text (Schedule 8) V3.1 02.03.26
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Problem Statement
Where a Network Party attends a site where Energy Theft has taken place, the Metering Asset may have been tampered with, and will therefore be unsafe. The Network Party, in the process of making the Metering Asset safe, will by necessity resolve any tampering. The removal of evidence of tampering is an issue for Energy Suppliers, who need this evidence to make claims under the TDIS.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
awaghorn@deloitte.co.uk
I0253 - Issue Proposal V1.0
I0253 - Change Proposal Re-Plan (Approved) V1.0 - 09.10.2025
R0253 Change Report (Plan) (Approved) V3.0 16.12.2025
R0253 Change Report (IA) V2.0 16.12.2025
R0253 - Change Proposal Re-Plan (Approved) V2.0 - 16.12.2025
R0253 Consolidated Impact Assessment Responses
R0253 Change Report - Consultation (Approved) V1.0 20.01.2026
R0253 Consolidated Consultation Responses V1.0
R0253 Change Report - Vote (Approved) V1.0 03.03.2026
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
Amendment to the Business Case for R0044
Date of latest update
Type
Change
ID
R0251
Change Path
Priority
Urgent
No
Latest Update
On 19 August 2025, in line with the Code Manager Recommendation, the Change Panel voted to approve the updated Business Case for R0044 MHHS Programme Changes required to Central Switching Service.
Summary
During MHHS System Integration Testing (SIT), additional requirements for the R0044 solution have been identified by the CSS provider, which means the business case for R0044 is no longer accurate. This Change Proposal will update the business case to include the additional costs.
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
The business case that was consulted on and approved as part of R0044 MHHS Programme Changes required to Central Switching Service is not accurate.
Stages Selection
Change Proposal form
R0251 Change Report (Final Recommendation) Approved
R0251 Consolidated consultation responses
Company Name
-
Review status
Review required
Update to R0060 Implementation Date
Date of latest update
Type
Change
ID
R0250
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
28/05/25 - On 28 May 2025 the Technical Expert Panel approved R0250, resulting in the implementation of R0060 being moved from 27 June 2025 to the ‘First available release after MHHS Milestone 8 – Code changes delivered’.
Summary
Without an update to the implementation of R0060 complexity is created for MHHS code drafting implementation as the MHHS design details in its operational choreography document that all timings are in clock time unless stated as otherwise.
Change Plan
Change Proposal approved by Technical Expert Panel
Completed
Start:
12 May 2025Due:
28 May 2025Completion:
28 May 2025Consultation completed
Completed
Start:
25 Mar 2025Due:
12 May 2025Completion:
12 May 2025Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
Without an update to the implementation date of R0060, the intent of the original proposed implementation date cannot be achieved. If the implementation date remains as 27 June 2025 complexity will be created for the implementation of MHHS code drafting as the MHHS design details in its operational choreography document that all timings are in clock time unless stated as otherwise.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
beth.brown@capgemini.com
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal form
R0250 Change Report (Proposal Plan) v2.0 (Approved) 15.04.2025
R0250 Change Report (Consultation) V1.0 16.04.2025
R0250 Consolidated Consultation Responses v1.0
R0250 Change Report (Final Recommendation) v2.0 (Post-Vote) 28.05.2025
Company Name
-
Review status
Review required
Correction to Change Management Schedule regarding sub-committee voting
Date of latest update
Type
Change
ID
R0249
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the REC Release on 27 June 2025.
Summary
20.4 of Schedule 5 Change Management currently states "decisions of the relevant responsible sub-committee shall be made by a majority vote". This is factually incorrect as the Metering Expert Panel is subject to different voting arrangements.
Change Plan
Proposal Plan approved by Change Panel
Completed
Start:
Due:
Completion:
15 Apr 2025Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
As a Category 1 document, Schedule 5 Change Management takes precent over Category 3 documents such as the Metering Expert Panel Terms of Reference. This change removes conflict identified within the REC.
Stages Selection
Change Management draft.doc
Change Proposal Form
R0249 Change Report (Proposal Plan) V1.0 Approved 15.04.2025
R0249 Change Report (For Consultation) V1.0
R0249 Consolidated Consultation Responses v1.0
R0249 Change Report (Final Recommendation) V1.0 Approved 03.06.25
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
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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
C21 to be introduced into STIRG Document
Date of latest update
Type
Change
ID
R0244
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
This change proposes to add a new category 3 asset condition code to the Guidance for Service Termination Issue Reporting (STIRG) document, to allow Meter Operator Agents (MOAs) to report to the Distribution Network Operator (DNO) where the meter supply neutral is fed via a shared additional N/E block without having to abort the meter work.
Change Plan
Proposal Plan approved by Change Panel
Completed
Start:
Due:
Completion:
01 Apr 2025Approved at Metering Expert Panel
Completed
Start:
Due:
Completion:
09 Jul 2025Status
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
C21 proposed legal text
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Document title
Non-standard PME arrangement - for consultation
Archive
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Document title
R0244 STIR Fully Red Lined post consultation
Archive
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Problem Statement
Parties are having to unnecessarily abort installs where there is a non-standard PME connection arrangement as there is no category 3 asset issue reporting option within the STIRG document.
Stages Selection
Proposal form
I0244 Change Report (Proposal Plan) v1.0 Approved 01.04.25
I0244 Consolidated Impact Assessment Responses PUBLIC v1.0
R0244 Change Report (For Consultation) V1.0
R0244 Consolidated Consultation Responses v1.0
R0244 Change Report (Final Recommendation) V1.0 post vote
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
Missing Scenario Variant from R0043
Date of latest update
Type
Change
ID
R0242
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
There is a missing scenario variant from the introduction of R0043 – Schedule 14 Metering Operations states the Crowded Meter Room MOA (CMRM) should send a D0139 to the Supplier and DNO but the scenario variant of CMRM to DNO is missing.
Change Plan
Proposal Plan approved at Change Panel
Completed
Start:
Due:
Completion:
18 Mar 2025Final vote at Technical Expert Panel
Completed
Start:
Due:
Completion:
25 Jun 2025Impacted 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
Problem Statement
CMRMs currently cannot send all the Market Messages required of them in Schedule 14 Metering Operations.
Stages Selection
Change Proposal form
R0242 Change Report (Proposal Plan) V1.0 Approved 18.03.25
R0242 Consolidated Impact Assessment Responses
R0242 Change Report (For Consultation) V1.0
R0242 Consolidated Consultation Responses v1.0
R0242 Change Report (Final Recommendation) V1.0 approved 25.06.25
Company Name
-
Review status
Review required