A process for resolution of gas unregistered sites
Date of latest update
Type
Issue
ID
I0199
Other Industry Codes impacted
Change Path
Urgent
No
Latest Update
09/10/2024 - This Issue has been withdrawn as it will be progressed as part of I0172 and any Issues not related to the REC will be handed off to UNC & IGTUNC.
Summary
Issue raised by RECCo at RIG. Healthy discussions have led to a recommendation that RIG refer this to ChIG for further discussion. GTs have reported to RECCo that there are approx 85,000 unregistered sites on the networks with no process for resolution between GTs and Suppliers
Impacted Consumers
Status
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
Stages Selection
I0199 - Gas Unregistered Sites (PDF)
Company Name
REC Code Manager
Review status
Review required
Review of Metering Asset data transferred from MAMs to the CDSP
Date of latest update
Type
Issue
ID
I0196
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
02/09/2026 - Update to plan published ahead of review at the REC Metering Expert Panel on 09 September 2026.
Summary
It has emerged that a high proportion of gas Data Items contain mismatches when comparing between Metering Asset Managers (MAM), Gas Suppliers, and the Central Data Service Provider. This Issue seeks to explore this issue and identify mechanisms by which these mismatches may be resolved.
Impacted Consumers
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
Problem Statement
Work conducted by RPA has identified a significant number of mismatches between gas Data Items held by key stakeholders. This may result in Consumer detriment, as information relevant to an MPRN may not be held accurately by any given Party. As such, there is a need to review processes pertaining to the communication of gas data by MAMs onward to the CDSP to mitigate the potential for mismatches.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0196 Issue Proposal Form (Word)
I0196 Issue Proposal Form (PDF)
I0196 Change Report (Plan) (Approved) V2.0 07.05.25
I0196 Change Re-Plan (Approved) V1.0 02.05.25
Company Name
-
Review status
Review required
Metering Asset Manager (MAM) Communication Method Register
Date of latest update
Type
Change
ID
R0198
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
Studies conducted by the REC Performance Assurance (RPA) function of the REC Code Manager have concluded that gas market data fidelity may be improved by reducing the frequency of missed messages between Metering Asset Managers and other REC Parties. This Issue seeks to explore mechanisms by which a reduction in the number of permissible communication methods used by MAMs could support the data quality improvement objective.
Impacted Consumers
Impacted REC Documents
Impacted REC Services
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
I0198 - Draft Schedule 14 - Metering Operations & Draft Communications Method Register
Archive
Off
Document title
R0198 - Draft Schedule 14 - Metering Operations & Draft Communications Method Register V2.0
Archive
Off
Problem Statement
MAMs communicate with each other, and with other parties, using up to three possible methods as they send Market Messages in line with their obligations in the REC. It has been suggested that moving to a single communication method might help mitigate gas data quality issues. This Issue seeks to explore an interim solution to facilitate this.
Stages Selection
SME
SME Role
Lead Assurance Analyst
SME User
beth.brown@capgemini.com
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0198 Change Proposal (pdf)
I0198 Change Report (Plan) (Approved) V2.0 03.04.2
I0198 Change Proposal Re-Plan V1.0 28.03.25
I0198 Change Report (IA) V1.0 03.04.25
R0198 Consolidated IA Responses V1.0 Non-Confidential
R0198 Change Report (Consultation) V1.0 11.06.25
R0198 Change Proposal Re-Plan V2.0 02.07.25
Change Report (Consultation) V2.0 11.07.25
R0198 Consolidated Consultation Responses V1.0 06.08.25
R0198 Change Report (Final Recommendation: Pre-Vote) V1.1 13.08.25
R0198 Change Report (Final Reccomendation - Post-Vote) V1.0 13.08.25
Company Name
-
Review status
Review required
Non dual-fuel Gas PSR Consumer
Date of latest update
Type
Issue
ID
I0186
Change Category
Change Path
Priority
Urgent
No
Latest Update
26/08/2025 - Update to Proposal Plan published. This will be presented to the REC Change Panel at their meeting on 02 September 2025.
Summary
Non dual-fuel Consumers who register upon the PSR, will have their PSR data flow across energy industry data flows to mean that all parties are aware of any PSR Needs Codes, allowing us all to provide equal access to our services and support. This will be achieved via the utilisation of existing processes and systems. Initially a pilot will take place for a minimum of 3 months between participating companies before extending this to the whole industry”.
Impacted REC Documents
Impacted REC Services
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
The majority of domestic customers in the UK are what are called in the industry ‘dual-fuel’ - this means that with two types of energy (electricity & gas) a domestic dwelling has a single supplier ie they pay their bill to one organisation. This ‘dual-fuel’ position has supported the industry improvements to Priority Services Register (PSR) data flows by allowing previous divides to be overstepped in terms of data flows between energy types. There is however a problem which this RECC request aims to resolve. That is, where a customer who has both fuel types, also has two suppliers and they want to register upon the PSR. This was always a ‘known’ gap shared with our regulator when the many improvements were implemented across the PSR and considered to be something that would be addressed at a later date. This ‘gap’ means that without the dual-fuel link, currently data flows do not complete across energy types via the supplier data flow triggers.
Stages Selection
Stages Selection
Change Proposal Form - Non dual-fuel Gas PSR Customer
I0186 - Change Report (Proposal Plan) V1.0 (Approved) 18.02.2025
Company Name
British Gas
Review status
Review required
Access to SDES for Gas Networks
Date of latest update
Type
Change
ID
R0162
Change Category
Change Path
Priority
Urgent
No
Latest Update
21/10/2025 - the REC Change Panel approved the withdrawal of the proposal plan for R0162 and that this Change would be placed on hold while I0285 progresses.
Summary
Raising on behalf of the Gas Networks, who currently struggle to find who to email queries to within suppliers organisation. Suppliers and Electricity DNO's moved to SDES to ensure all communications were in a secure portal, with SLA's and for GDPR reasons, but Gas Networks do not have access to this portal, and not considered during the implementation of the system. They also obtain photo's when out on site to help resolve queries and would like somewhere to upload them to send to suppliers.
Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0162 Solution Development Report V1.0
Archive
Off
Problem Statement
Energy Suppliers and Distribution Network Operators (DNOs) moved to SDES to ensure all communications were in a secure portal, with SLAs and for GDPR reasons. Gas Transporters do not have access to this portal, and were not considered during the implementation of the system. As such, communications are not being sent as securely as possible.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
CP Form Access to SDES for Gas Networks
R0162 Change Report (Proposal Plan) V1.0 Approved 15.04.2025
R0162 Consolidated Impact Assessment Responses v1.0
R0162 Extension to Plan V1.0 approved 27.08.25
R0162 Rebaseline Plan (withdrawal) V2.0 approved 21.10.25
Company Name
Octopus Energy
Review status
Review required
Amendment to the ‘Supplier Registration Report (MAP)’ report methodology
Date of latest update
Type
Change
ID
R0158
Change Category
Change Path
Priority
Urgent
No
Latest Update
28/06/2024 - Change implemented as part of the June 2024 REC Release
Summary
Meter Asset Providers (MAPs) can query the Gas Enquiry Service (GES) as part of their billing process to establish the Registered Gas Suppliers of their portfolio of Metering Assets. The reports via which MAPs can query the GES are not currently working exactly as intended due to incorrect wording in the GES Definition; this change seeks to rectify that.
Change Plan
Preliminary Change Report Issued
Completed
Start:
08 Feb 2024Due:
15 Mar 2024Completion:
15 Mar 2024Consultation Issued
Completed
Start:
15 Mar 2024Due:
15 Mar 2024Completion:
15 Mar 2024Final Change Report Issued
Completed
Start:
15 Mar 2024Due:
12 Apr 2024Completion:
12 Apr 2024Responsible Committee Decision
Completed
Start:
12 Apr 2024Due:
24 Apr 2024Completion:
24 Apr 2024Appeal Window Closure
Not Started
Start:
24 Apr 2024Due:
08 May 2024Completion:
Status
Implementation Date
28 June 2024
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a Registered Gas Supplier, I want to receive accurate invoices from MAPs for use of their Metering Assets, so that I am not over or under charged. 2 - As a MAP, I want to be able to access accurate information about my portfolio so that I can be correctly remunerated by Suppliers. 3 - As the GES Provider, I want the reports that I am obligated to provide to be correctly defined, so that I am able to provide accurate data to MAPs regarding their portfolios.
Proposed Solution Document
Document title
R0158 Solution - Gas Enquiry Service (GES) Service Definition v1.3 (Draft) 15.03.24
Archive
Off
Document title
R0158 Solution - Gas Enquiry Service (GES) Service Definition v1.3.1 (Draft) 11.04.24
Archive
Off
Problem Statement
The GES Service Definition defines two reports that MAPs can use to query the CDSP to find out which Registered Gas Suppliers supply Metering Assets in their portfolio, so that they can bill them. Due to a drafting error in the GES Service Definition, this report is not working as intended, and MAPs are not able to ascertain the Registered Gas Supplier for their entire portfolio. This change seeks to rectify the drafting error and restore the intended functionality of the two reports.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
R0158 Change Proposal Form - Supporting Documents
R0158 Change Proposal Form
R0158 Change Proposal Form (PDF)
R0158 Initial Assessment Report (Approved) V1.0 06.03.24
R0158 Change Proposal Plan (Approved) V1.0 06.03.24
R0158 Preliminary Change Report (Published for Consultation) V1.0 15.03.24
R0158 Consolidated Consultation Responses V1.0 12.04.24
R0158 Final Change Report (Post-Vote) V1.0
Company Name
-
Review status
Review required
Catering for Registration Events where the Incumbent Supplier deactivates prior to a Switch becoming effective
Date of latest update
Type
Change
ID
R0153
Change Category
Change Path
Priority
Urgent
No
Latest Update
04/06/24 - This change has been withdrawn by the proposer and is being incorporated as part of R0178 - Improvements to CSS Business Process Logic. 03/05/2024 - An investigation was held into the requirements of this change and into other issues identified with the CSS Business Process and Logic. Landmark have provided data relating to the number of incidents for three different scenarios which had been identified. A discussion as held between the Code Manager, DCC and Landmark, and agreed that they will look to combine all identified issues into a new REC Change Proposal.
Summary
This change looks to resolve the issue for Registration Events where the incumbent Supplier deactivates prior to a Switch becoming effective. In some instances, the incumbent Supplier is withdrawing prior to the ‘Supply Effective from Date’ which causes the accepted Switch to fail at Gate Closure (17:00hrs) . An effective solution is to allow the consumer to Switch with the original effective date. There are a number of solution options to enable this to happen.
Impacted Consumers
Impacted REC Documents
Impacted REC Services
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Problem Statement
In some instances, the incumbent Supplier is withdrawing prior to the ‘Supply Effective from Date’ which causes the accepted Switch to fail at Gate Closure (17:00hrs).
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
caroline.milner@capgemini.com
Catering for Registration of Events CP Form 24.11.2023
Company Name
Xoserve
Review status
Review required
Data Specification Update for Refresh Functionality
Date of latest update
Type
Change
ID
R0146
Change Category
Change Path
Priority
Urgent
No
Latest Update
23/08/2024 - This change was successfully implemented as part of the August 2024 Extraordinary REC Release on 23 August 2024.
Summary
This change has been raised to update the Data Specification and to align it with the changes made during implementation of change proposal ‘R0067 – Introduction of CSS Refresh Functionality’.
Change Plan
Preliminary Change Report Published
Completed
Start:
21 Aug 2023Due:
16 May 2024Completion:
16 May 2024Consultation Issued
Completed
Start:
16 May 2024Due:
16 May 2024Completion:
16 May 2024Final Change Report Issued
Data Specification Update for Refresh Functionality > Change Plan
Start:
16 May 2024Due:
19 Jun 2024Completion:
Responsible Committee Decision
Data Specification Update for Refresh Functionality > Change Plan
Start:
19 Jun 2024Due:
26 Jun 2024Completion:
Impacted Consumers
Status
Implementation Date
23 August 2024
| 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 summary
- As a Market Participant, I need to understand any changes to Market Messages I send and receive that may impact my business, so I can engage in the change process and plan any required changes to my systems and processes.
Proposed Solution Document
Document title
R0146 Solution Development Report
Archive
Off
Document title
R0146 Attachment A - Proposed Data Specification Changes
Archive
Off
Problem Statement
Following implementation of R0067, a small number of Market Messages and Data Items need to be appropriately reflected within the Data Specification.
Stages Selection
R0146 - Change Proposal Form
R0146 - Change Proposal Plan v1.0 (Approved)
R0146 - Initial Assessment Report v1.0 (Approved)
R0146 - Preliminary Change Report v1.0
R0146 Final Change Report (Post-Vote) v1.0 26.06.2024
Company Name
Code Manager
Review status
Review required
Amendment to Multiplication Factor Enumerations to Support Hydrogen Trials
Date of latest update
Type
Change
ID
R0142
Change Category
Change Path
Priority
Urgent
No
Latest Update
28/06/2024 - Change implemented as part of the June 2024 REC Release
Summary
The H100 hydrogen gas trial involves the supply of hydrogen gas to households in place of natural gas. The quantity of gas supplies needs to be billed in a way that is comparable to standard gas supply. To facilitate the trial, a multiplication factor enumeration value must be established within the Data Specification that can replicate hydrogen’s calorific value, therefore allowing accurate billing.
Change Plan
SERVICE PROVIDER IMPACT ASSESSMENT ISSUED
Completed
Start:
11 Aug 2023Due:
27 Nov 2023Completion:
27 Nov 2023PARTY IMPACT ASSESSMENT ISSUED
Completed
Start:
27 Nov 2023Due:
01 Dec 2023Completion:
01 Dec 2023PRELIMINARY CHANGE REPORT PUBLISHED
Completed
Start:
01 Dec 2023Due:
19 Jan 2024Completion:
19 Jan 2024CONSULTATION ISSUED
Completed
Start:
19 Jan 2024Due:
19 Jan 2024Completion:
19 Jan 2024FINAL CHANGE REPORT PUBLISHED
Completed
Start:
19 Jan 2024Due:
20 Feb 2024Completion:
16 Feb 2024RESPONSIBLE COMMITTEE DECISION
Completed
Start:
20 Feb 2024Due:
28 Feb 2024Completion:
28 Feb 2024Status
Implementation Date
28 June 2024
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a Consumer taking part in the H100 trial, I want to be charged based on the amount of gas I consume, such that I am not charged more than I would have been, had I consumed the equivalent energy from natural gas.
- As a Gas Supplier, I want to ensure H100 trial Consumers, are not charged more than they would have been, had they consumed the equivalent energy from natural gas. 2- As a Gas Transporter, I want to accurately know how much hydrogen gas is being offtaken, so that I can support Suppliers. 3- As the Central Data Service Provider (CDSP), I want Market Messages relating to meter asset information to be accurate, so that I am better able to support dependant REC Parties. 4- As a Meter Equipment Manager (MEM), I want my metering assets compatible with the H100 trial to be underpinned by accurate Market Messages, so that I able to manage these meters correctly.
Proposed Solution Document
Document title
R0142 Solution - DI40145 - A0120 - Multiplication Factor Change v2.0
Archive
Off
Document title
R0142 Solution-DI40145-A0120-Multiplication Factor Change v2.1
Archive
Off
Problem Statement
In order for the H100 gas trial to be successful, a billable value for hydrogen gas needs to be accurately calculated from supplied physical volumes. To do this, relevant Data Items (relating to the calculation of billable gas volumes) within the Data Specification need to be updated to allow a new value for the multiplication factor. This change seeks to introduce a new enumeration value for the multiplication factor needed to facilitate the addition of this new value.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
beth.brown@capgemini.com
SME Role
Lead Assurance Analyst
DI40145 Multiplication Factor - 23.06.2023
R0142 - Change Proposal Form.pdf
R0142 - Change Proposal Form
R0142 Change Proposal Plan v1.0 (Approved) - 05.12.2023
R0142 Initial Assessment Report v1.0 (Approved) - 05.12.23
R0142 Consolidated Impact Assessment Responses V1.0 16.01.24
R0142 Preliminary Change Report (Published for Consultation) V1.0 19.01.24
R0142 Consolidated Consultation Responses v1.0 16.02.24
R0142 Final Change Report (Post-Vote) v1.0 - 28.02.24
Company Name
-
Review status
Review required
Creation of new Enquiry Service User Category
Date of latest update
Type
Change
ID
R0131
Change Category
Change Path
Priority
Urgent
No
Latest Update
17/06/2024 - this Change Proposal has been withdrawn at the request of the Proposer. The adoption window is closed.
Summary
Empty
Impacted Consumers
Impacted REC Documents
Impacted REC Services
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0131 - Change Proposal Form (downloadable version) 22.06.2023
Company Name
-
Review status
Review required