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
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
Archive
Off
Document title
Non-standard PME arrangement - for consultation
Archive
Off
Document title
R0244 STIR Fully Red Lined post consultation
Archive
Off
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
MHHS Incremental Changes for go live
Date of latest update
Type
Change
ID
R0241
Change Category
Urgent
No
Latest Update
22/09/25 - This Change Proposal has been implemented as part of the MHHS M8 22 September 2025 REC Release.
Summary
This Issue looks to assess and confirm the scope to be taken forward into the Change Proposal that will deliver critical updates to the REC MHHS Code Drafting. Any potential scope items that have material impacts over and above the approved MHHS design will be considered as having unacceptable risk to the intended Change Proposal and will not be included in the confirmed scope.
Change Plan
Change Proposal Plan approved
Completed
Start:
30 Jan 2025Due:
04 Mar 2025Completion:
04 Mar 2025Issue scope developed and presented at Change Issues Group meetings (06 March, 03 April, 01 May)
Completed
Start:
04 Mar 2025Due:
01 May 2025Completion:
01 May 2025Solution and legal drafting presented to Code Drafting Working Group
Completed
Start:
01 May 2025Due:
13 May 2025Completion:
13 May 2025Solution and legal drafting endorsed by Cross Code Advisory Group
Completed
Start:
13 May 2025Due:
28 May 2025Completion:
28 May 2025Ofgem direction received
Completed
Start:
28 May 2025Due:
04 Jun 2025Completion:
04 Jun 2025Consultation published
Completed
Start:
04 Jun 2025Due:
17 Jun 2025Completion:
17 Jun 2025Change Report (Consultation) approved at Change Panel
Completed
Start:
17 Jun 2025Due:
17 Jun 2025Completion:
17 Jun 2025REC Change Panel vote on Code Manager's recommendation
Completed
Start:
17 Jun 2025Due:
15 Jul 2025Completion:
15 Jul 2025Authority referral sent
Completed
Start:
15 Jul 2025Due:
17 Jul 2025Completion:
16 Jul 2025Authority decision published
In Progress
Start:
17 Jul 2025Due:
05 Sep 2025Completion:
Status
Implementation Date
MHHS Programme Milestone M8 (Code changes delivered)
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0241 Scope Tracker 06.05.2025
Archive
Off
Document title
I0241 Programme Design Updates 06.05.2025
Archive
Off
Document title
I0241 Programme Design Updates 06.03.2025
Archive
Off
Document title
I0241 - Programme Design Updates reference documents
Archive
Off
Document title
CR056 Change Request - MHHS Programme Website
Archive
Off
Document title
I0241 Consequential Change - DTN Market Messages 06.05.2025
Archive
Off
Document title
I0241 Consequential Change - EES API 06.05.2025
Archive
Off
Document title
I0241 - Solution Appendix - EES API v1.0
Archive
Off
Document title
I0241 Drafting Updates - EES Service Requirements 06.05.2025
Archive
Off
Document title
I0241 Drafting Updates - Alignments 06.05.2025
Archive
Off
Document title
I0241 Drafting Updates - Related Metering Points 06.05.2025
Archive
Off
Document title
I0241 - Solution Appendix - Related Metering Points v1.0
Archive
Off
Document title
I0241 - Related Metering Points reference documents
Archive
Off
Document title
I0241 EMDS Corrections Summary 08.07.2025
Archive
Off
Document title
I0241 EMDS Corrections Summary 06.03.2025
Archive
Off
Document title
M8 Control Log v1.0 2 REC Corrections extract 05.03.2025
Archive
Off
Document title
I0241 Drafting Updates - MHHS Activation 06.05.2025
Archive
Off
Document title
R0241 Drafting Updates - Migration Schedule 08.07.2025
Archive
Off
Document title
R0241 Legal text for Decision 08.07.2025 - Approved
Archive
Off
Document title
R0241 Solution documents for Decision 08.07.2025
Archive
Off
Document title
R0241 Legal text for Consultation
Archive
Off
Document title
EMDS MHHS v1.4 - updated for DCUSA only
Archive
Off
Document title
REC Drafting I0241 - CDWG 06.05.2025
Archive
Off
Document title
I0241 Code Drafting CHIG 01.05.2025
Archive
Off
Document title
MHHS Collaboration Base - Code Drafting Working Group
Archive
Off
Document title
M8 Code Change - MHHS Programme Page
Archive
Off
Problem Statement
It is critical to the implementation of MHHS that design changes approved by the MHHS Programme are reflected in the REC MHHS Code Drafting. The REC MHHS Code Drafting was approved by the Authority, to meet MHHS Programme Milestone M7, through R0209 and incremental changes that were not included under that Change Proposal, now need to be taken through REC change governance as captured under the R0209 RAID, Risk R001 and Assumptions A005 and A006.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0241 - MHHS Incremental Changes for go live - Issue Form
I0241 Change Report (Proposal Plan) (Approved) v1.0 04.03.2025
R0209 Change Report (Post-Vote) v2.0 05.11.2024.pdf
I0241 Introduction at Change Issues Group 06.02.2025
Authority Led SCR REC Change Proposal on the MHHS arrangements - letter to REC Panel Chair 04.06.2025
I0241 Consolidated Party IA Responses PUBLIC 05.06.2025
R0241 Change Report (Consultation) v2.0 17.06.2025
R0241 Consolidated Consultation Responses PUBLIC v1.0
R0241 Change Report (Post Vote) v2.0 15.07.2025
R0241-MHHS-incremental-changes-for-go-live Ofgem Decision 07.08.2025.pdf
Company Name
-
Review status
Review required
Housekeeping February 2025
Date of latest update
Type
Change
ID
R0239
Change Path
Priority
Urgent
No
Latest Update
Housekeeping Change implemented on the 28 February 2025.
Summary
The code manager has identified a number of non-material clarifications, typographical errors and changes needed to REC products.
Status
Implementation Date
28 February 2025
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0239 Legal text.zip
Archive
Off
Problem Statement
This Housekeeping Change Proposal seeks to make typographical and formatting corrections that have been identified and improve consistency across the REC.
Stages Selection
R0239 Housekeeping Change Report
Company Name
-
Review status
Review required
Performance Assurance Reporting Catalogue - Annual Review
Date of latest update
Type
Change
ID
R0238
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
As part of the Performance Assurance operating plan we are required to review the PARC on an annual basis to identify any changed required. This exercise has been completed and a small number of minor changes identified including updating reference material to reflect other changes to Performance Assurance artifacts (e.g. updates to the Retail Risk Register)
Change Plan
Proposal Plan Approved
Completed
Start:
Due:
Completion:
18 Feb 2025Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
Performance Assurance Review Catalogue R0238 - v0.1
Archive
Off
Problem Statement
As part of the Performance Assurance Operating Plan, REC Performance Assurance are required to review the PARC on an annual basis to identify any changed required. The REC PAB has conducted their 2024 review of the PARC and proposed changes to update to Version 5.1. If the PARC is not kept up to date, this can lead to confusion for Parties. With some of the changes identified correcting typographic errors that can cause errors by Parties when they are uploading data.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
awaghorn@deloitte.co.uk
R0238 - Change Report (Impact Assessment) v1.0
R0238 - Change Report (Proposal Plan - Approved) v1.0 18.02.2025
Change Proposal form
R0238 - Consolidated Impact Assessment Responses V1.0
R0238 - Change Report (Consultation) V1.0
R0238 - Consolidated Consultation Responses (23.04.2025)
R0238 - Change Report (Final Recommendation) V2.0 (Post-Vote) 27.05.2025
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
Introduction of an energy theft Referral Assessment Service under the REC
Date of latest update
Type
Change
ID
R0234
Change Category
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the REC Release on 27 June 2025.
Summary
Energy theft is a significant issue, costing consumers between £457 million and £760 million annually (based on Autumn 2024 retail prices). Energy theft also poses safety risks, particularly due to tampered meters, which have caused fatal incidents. Whilst existing measures under the REC, such as the Energy Theft Tip-Off Service (ETTOS) and Theft Detection Incentive Scheme (TDIS) seek to provide information on likely instances of energy theft and the incentives to investigate them, there are currently insufficient enforcement mechanisms and coordination with law enforcement agencies. In particular, there are challenges due to limited police engagement and inconsistent prosecutions, contributing to a low deterrent.
Change Plan
Change Report (Proposal Plan) at Change Panel
Introduction of an energy theft Referral Assessment Service under the REC > Change Plan
Start:
29 Jan 2025Due:
04 Feb 2025Completion:
04 Feb 2025Presentation to TIG
Completed
Start:
13 Jan 2025Due:
29 Jan 2025Completion:
29 Jan 2025Change Proposal Updated Plan (Extension) at Change Panel
Introduction of an energy theft Referral Assessment Service under the REC > Change Plan
Start:
04 Feb 2025Due:
18 Feb 2025Completion:
18 Feb 2025Final solution presented to TIG
Completed
Start:
18 Feb 2025Due:
26 Feb 2025Completion:
26 Feb 2025Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0234 - Legal Drafting
Archive
Off
Document title
R0234 - ETU and RAS Case Acceptance Criteria
Archive
Off
Document title
R0234 - Referral information and evidentiary requirements
Archive
Off
Document title
RAS and ETU Referral Information and Evidentiary Requirements
Archive
Off
Problem Statement
The introduction of the ETU provides the mechanism to prosecute and add a significant deterrent previously missing from the theft landscape. To ensure an effective operation of this unit, the referrals should include standardised data by introducing the Referral Assessment Service (RAS). RAS will assess, triage and co-ordinate theft referrals received from industry parties.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
rosalind.timperley
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal Form - Referral Assessment Service.docx
Energy Theft Unit - Business Case November 2024
I0234 - Change Report (Updated Plan) Approved 18.02.2025
R0234 Change Report (Party Impact Assessment)
R0234 Consolidated Impact Assessment Responses NON-CONFIDENTIAL
R0234 Change Report (Consultation)
R0234 Consolidated Consultation Responses NON-CONFIDEANTIAL (14/05/2025)
R0234 Change Report (Final Recommendation) Post-vote
R0234 Decision Letter
Company Name
-
Review status
Review required
Introduction of an Energy Theft Unit (ETU) under the REC
Date of latest update
Type
Change
ID
R0233
Change Category
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the REC Release on 27 June 2025.
Summary
Energy theft is a significant issue, costing consumers between £457 million and £760 million annually (based on Autumn 2024 retail prices). Energy theft also poses safety risks, particularly due to tampered meters, which have caused fatal incidents. Whilst existing measures under the REC, such as the Energy Theft Tip-Off Service (ETTOS) and Theft Detection Incentive Scheme (TDIS) seek to provide information on likely instances of energy theft and the incentives to investigate them, there are currently insufficient enforcement mechanisms and coordination with law enforcement agencies. In particular, there are challenges due to limited police engagement and inconsistent prosecutions, contributing to a low deterrent.
Change Plan
Change Report (Proposal Plan) at Change Panel
Introduction of an Energy Theft Unit (ETU) under the REC > Change Plan
Start:
29 Jan 2025Due:
04 Feb 2025Completion:
04 Feb 2025Presentation to TIG
Completed
Start:
13 Jan 2025Due:
29 Jan 2025Completion:
29 Jan 2025Change Report (Consultation) to Change Panel
Introduction of an Energy Theft Unit (ETU) under the REC > Change Plan
Start:
04 Feb 2025Due:
18 Mar 2025Completion:
18 Mar 2025Change Report (Final) for Change Panel
In Progress
Start:
18 Mar 2025Due:
06 May 2025Completion:
06 May 2025Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0233 - Legal drafting (28/02/2025)
Archive
Off
Problem Statement
Whilst existing measures under the REC, such as the Energy Theft Tip-Off Service (ETTOS) and Theft Detection Incentive Scheme (TDIS) seek to provide information on likely instances of Energy Theft and the incentives to investigate them, there are currently insufficient enforcement mechanisms and coordination with law enforcement agencies. Energy theft is an illegal activity where criminal charges are being given if perpetrators are being prosecuted. However, these are rarely happening due to limited police engagement and inconsistent prosecutions. This means offenders may re-offend given the low deterrent.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
rosalind.timperley
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal Form - Energy Theft Unit.docx
Energy Theft Unit - Business Case November 2024
I0233 - Change Report (Proposal Plan) (Approved) 04/02/2025
R0233 Change Report (Consultation)
R0233 Consolidated Consultation Responses NON-CONFIDENTIAL
R0233 Change Report (Final Recommendation) Post-vote (07/05/2025)
R0233 Decision Letter
Company Name
-
Review status
Review required