Theft Target Methodology v3.1
Date of latest update
Type
Change
ID
C3-0118
Urgent
No
Latest Update
-
Summary
Provisional numbers included in the methodology have now been updated in line with the documented approach to utilise the final available input data for inflation and the split of smart/non-smart meters. These are the values being used by the Code Manager to calculate the 2025/26 Theft Year Targets and Pot sizes.
Status
Implementation Status
Date Raised
Date of Update to Priority
Stages Selection
Company Name
Code Manager (RPA)
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
Addition of data items to the Service Provider to local authorities or housing associations category in the Gas Data Access Matrix
Date of latest update
Type
Change
ID
C3-0117
Urgent
No
Latest Update
-
Summary
Tenants Save Money provide a void energy service to local authorities and housing associations across the UK. They play a vital role for social landlords to restore power for both gas and electricity for domestic properties including fixing energy related issues, debt removal and meter exchanges. This category has already been approved within the Gas Data Access Matrix and this request seeks to add additional data items. Tenants Save Money are contracted to work with suppliers to fix, restore and repair domestic electricity and gas meters allowing Local Authorities and Housing Associations to rehome vulnerable tenants and the homeless more quickly. Their service means that they will deal directly with the Energy Suppliers. Their team speak daily with Energy Suppliers to restore power, remove historical debts, or reset prepayment meters so new tenants are not paying back debts that are not theirs. They have contracts with energy partners such as OVO energy and British Gas and have already been approved to gain access to EES for the same purpose.
Status
Implementation Status
Date Raised
Date of Update to Priority
Stages Selection
Company Name
Code Manager (RPS)
Review status
Review required
Addition of Data Items to the Third-Party Service Provider (Non-Switching) Category
Date of latest update
Type
Change
ID
C3-0116
Urgent
No
Latest Update
-
Summary
Two use cases for access have been applied for where the Code Manager has allocated it to the Third-Party Service Provider Non-Switching category. The first is a small energy consultancy providing bill management services to domestic only premises. The other is for organisations providing low carbon technology, renewable energy and generation installations who need to register equipment with Distribution Networks. The provision of the attached data items will allow organisations to support domestic and non-domestic Consumers in managing their energy use or investing in renewable generation and low carbon technologies.
Status
Implementation Status
Date Raised
Date of Update to Priority
Stages Selection
Company Name
Code Manager (RPS)
Review status
Review required
Creation of a new category for property owner (excluding social housing) on the electricity Data Access Matrix
Date of latest update
Type
Change
ID
C3-0115
Urgent
No
Latest Update
-
Summary
Property owners (excluding social housing) require an understanding of the equipment installed in each of the properties they own. This will assist in portfolio management and Environmental, Social and Governance (ESG) Reporting including Net Zero targets. Derwent London is a specialist property regenerator and investor focussed on curating sustainable and low carbon properties mostly within Central London. It has strong Net Zero targets and ESG Reporting commitments which encompass all its managed (Derwent London is the bill payer) and un-managed (Derwent London is not the bill payer) properties. Where properties are un-managed, Derwent London requires metering equipment information to link with other data sources. This metering information provides the required information to feed into each reporting cycle. All un-managed properties are under Letters of Authority (LoA) to prove Consumer consent.
Status
Implementation Status
Date Raised
Date of Update to Priority
Stages Selection
Company Name
Code Manager (RPS)
Review status
Review required
Creation of a new category of charities supporting Domestic Consumers on the electricity Data Access Matrix
Date of latest update
Type
Change
ID
C3-0114
Urgent
No
Latest Update
-
Summary
The Fuel Bank Foundation provides crisis support to households with a prepayment meter who are facing the prospect of living without heat, light, and power as they are unable to top up the meter. It works with a network of partners across the UK, but only a few core Fuel Bank staff will have access to this data. The Fuel Bank Foundation exclusively works with prepayment Consumers therefore information which may help determine a prepayment meter and confirm details of supply is requested. The Foundation only works with Consumers who have approached them so will rely on Consumer consent to access the data.
Status
Implementation Status
Date Raised
Date of Update to Priority
Stages Selection
Company Name
Code Manager (RPS)
Review status
Review required
Data alignment of meter information through MHHS Migration
Date of latest update
Type
Issue
ID
I0240
Change Category
Change Path
Priority
Urgent
No
Latest Update
30/04/2026 - The Code Manager has now published the I0240 - Scenario Guidance Document V2.0 on the REC Portal. This is available on the I0240 Proposal Page and the Market-wide Half Hourly Settlement Hub.
Summary
This Issue looks to address that when Meter updates are made during a Market Wide Half-Hourly Settlement (MHHS) migration, whilst the Meter Technical Details (MTDs) will be shared between participants, there will be no update sent to the Registration Service as the Gaining Meter Operator Agent (MOA) will not know that they need to send a D0312 (for reverse migration) or IF005 (for forward migration) and the Losing MOA cannot send the message.
Impacted REC Documents
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0240 - Data Alignment of Meter Information Through MHHS Migration - Scenario Guidance Document V2.0 (30.04.2026)
Archive
Off
Problem Statement
During MHHS migration, key Market Messages from the Losing MOA, such as D0312, IF005, D0205, and D0139, are rejected by the Registration Service, preventing updates to meter details and Energisation status. This creates a risk of data misalignment, as the Gaining MOA may not be aware that updates occurred and therefore cannot resend them.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0240 - Submission Form
I0240 - Change Report (Proposal Plan) V1.0 (08.07.2025) Approved
Company Name
-
Review status
Review required