Explore use of CHECK as a Meter Type option on J0483 DI-059
Date of latest update
Type
Issue
ID
I0344
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
24/08/2026 - accepted in by Code Manager
Summary
It has been suggested that CHECK meters should not be sent within industry messages so the presence of this value within the valid set may not be required. This Issue has been raised to explore whether this assumption is correct, look at the existing/historic use cases industry have used the CHECK option for, if they are no longer valid and if so why not.
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
I0344 submission form
Company Name
-
Review status
Review required
REC Change to align with CP1633 Capture Modem Module Details Under BSCP601
Date of latest update
Type
Issue
ID
I0338
Change Category
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
06/08/2026 - Issue accepted in by the Code Manager
Summary
BSC CP1633 “Capture Modem Module Details Under BSCP601” makes amendments to BSCP601 Metering Protocol Approval and Compliance Testing. One of the amendments places obligations on MOAs where they are introducing and amending Communications Equipment. Equivalent and potentially expanded obligations need to be placed within REC Schedule 14 Metering Operations to support this.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
Stages Selection
I0338 submission form
Company Name
-
Review status
Review required
Post-MHHS Full Transition Complete (M15) REC updates
Date of latest update
Type
Issue
ID
I0325
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
21/07/2026 - On 21 July 2026, the REC Change Panel voted to approve the Change Report (Proposal Plan) for I0325.
Summary
The REC was updated, primarily through R0209 and R0241, to add requirements that support the transition to, and enduring operation of the MHHS arrangements. As part of the transition, each impacted Metering Point will be migrated using processes defined in Codes, including the REC. Once this migration activity is complete, the legacy and transitional arrangements will become redundant and should be removed from the REC to support its efficient operation
Impacted REC Documents
Impacted REC Services
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
Retention of redundant obligations within the REC would make it more complex to navigate for Market Participants and could cause confusion on the obligations that are in effect to support the efficient operation of the Great British Energy retail market. It is also worth noting that until Ofgem formally closes the MHHS Significant Code Review (SCR), this REC Issue could potentially impact that SCR.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
I0325 submission form
I0325 Scope list
Company Name
-
Review status
Review required
Addition of value 11 to data item J0418
Date of latest update
Type
Change
ID
R0310
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the June 2026 REC Release.
Summary
To add value 11 to the valid set value for data item J0418 – Meter COP. Unable to update Meter technical details (MTD's), the D0268 flow, as specified under BSCP603/7 via the DTN as the AMVLP. The appointed agent will not be able to automatically process or upload the flows received to their systems due to validation errors.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
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
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
R0310 submission form
R0310 Proposed changes to REC Data Specification
R0310 Change Report (Proposal Plan and Consultation) Approved 17.03.26
R0310 Consolidated Consultation Responses
R0310 Change Report (Final Recommendation) Post-vote
Company Name
-
Review status
Review required
Legacy Data Item API Service
Date of latest update
Type
Change
ID
R0290
Change Category
Change Path
Priority
Urgent
No
Latest Update
02/06/2026 - the REC Change Panel voted to reject the implementation of this Change Proposal, in line with the Code Manager recommendation. The appeal window closed on 17 June 2026.
Summary
MHHS removes certain Data Items (e.g. Profile Class, Measurement Class, Standard Settlement Configuration, Time Pattern Regime etc.) that are important to wider processes and products offered to consumers. This proposal is seeking a mechanism for electricity Market Participants to look up the previous entries for these legacy Data Items held before MHHS Migration begins.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
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
R0290 New Schedule Legacy Data Item API V0.4
Archive
Off
Document title
R0290 Schedule 1 Defined Terms V0.2
Archive
Off
Document title
R0290 Schedule 9 Qualification and Maintenance v0.1
Archive
Off
Problem Statement
The risk of loss of certain Data Items for MHHS Migrated Metering Points may impact Parties in their ability to carry out and support industry processes, or in what products they are able to offer Consumers, in both the MHHS Market and following a Reverse Migration.
Stages Selection
SME
SME Role
Lead Technical Analyst
I0290 submission form
I0290 Change Report (Proposal Plan) V1.0
I0290 Extension to Plan V1.0 approved 27.03.26
I0290 Extension to Plan V2.0 approved 27.04.26
R0290 Change Report (For Consultation) v1.0
R0290 Consolidated Consultation Responses V1.0
Energy Consultants Association - letter on Change Report (Final Recommendation)
R0290 Change Report (Final Recommendation) v1.1 post vote 02.06.2026
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
Changes to Terms of reference following acceptance of R0167
Date of latest update
Type
Change
ID
R0188
Change Path
Urgent
No
Latest Update
20/08/2024 - Approved for implementation on 06/09/2024.
Summary
This Housekeeping Change Proposal seeks to update the Terms of Reference of the REC Change Panel and the Performance Assurance Board, following the acceptance of R0167, to reflect Issues.
Impacted Consumers
Impacted REC Parties and Market Participants
Status
Implementation Date
06 September 2024
| Included changes | Affected REC Items | |
|---|---|---|
| R0003 | Market-wide Half-Hourly Settlement Implementation |
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
REC Change Panel - Terms of Reference
Archive
Off
Document title
REC Performance Assurance Board (PAB) - Terms of Reference
Archive
Off
Problem Statement
This Housekeeping Change Proposal seeks to update the Change Panel and Performance Assurance Board, Terms of Reference to reflect that these Committees consider change Issues as well as Change Proposals.
Stages Selection
R0188 - Change Proposal Form
R0188 - Housekeeping Change Report (Post Approval)
Company Name
Rec Manager
Review status
Review required
Removing the Enumerations from Communications Method Data Item (J0386) to align with BSC CP 1594
Date of latest update
Type
Change
ID
R0164
Other Industry Codes impacted
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
BSC has raised Change Proposal CP1594 which seeks to create an approvals process and a valid set for communications method. This change is proposing to create an approvals process to allow for the managed end dating of older technologies, such as Public switched telephone network (PSTN), Circuit Switched Data (CSD) and later 2G, and the assessment of the validity of newer communications technologies, such as (but not exclusively) Narrow Band-Intern of Things (NBIoT) and Category M (CAT-M). The evolution of metering communication systems underscores the need for timely updates. Legacy systems risk inefficiencies and potential security vulnerabilities. Implementing an approval process, modelled on BSCP601, ensures a standardised approach to introducing new technologies and managing the exit of old ones. Further justifications include: • To allow for the centrally managed end-dating of redundant communications technologies in line with known deadlines for those technologies to become redundant and unreliable. • To allow for the wider industry education of newer types of communication technologies. • To create and expand the already existing central knowledge base of the evolution and attributes of newer communication technologies as they relate to Settlement Metering Equipment. • To ensure transparency for all industry participants on the newer communications types available and the dates for which legacy communications must be removed. CP1594 will create a valid set, linked to the new approval process and using Data Item J0386 as a conduit to detail the approved communication methods as well as end dates for communication methods which are becoming redundant and unreliable.
Change Plan
PARTY IMPACT ASSESSMENT ISSUED
Completed
Start:
16 Apr 2024Due:
25 Apr 2024Completion:
25 Apr 2024PRELIMINARY CHANGE REPORT AND CONSULTATION ISSUED
Completed
Start:
25 Apr 2024Due:
23 May 2024Completion:
23 May 2024FINAL CHANGE REPORT ISSUED
Completed
Start:
23 May 2024Due:
20 Jun 2024Completion:
20 Jun 2024RESPONSIBLE COMMITTEE DECISION
Completed
Start:
20 Jun 2024Due:
02 Jul 2024Completion:
02 Jul 2024Impacted Consumers
Impacted REC Parties and Market Participants
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 Supplier/DNO/MEM, I want to ensure that Market Messages I send or receive to contain up-to-date, accurate data, so that I am able to effectively engage with the wider industry.
- As a non-REC Party Service User I want to ensure that Market Messages I send or receive to contain up-to-date, accurate data, so that I am able to effectively engage with the wider industry.
Proposed Solution Document
Document title
R0164 - Draft Solution - J0386 Data Item - Data Spec Changes 22.05.24
Archive
Off
Problem Statement
The BSC are making changes to how permissible Outstation communication methods are captured and recorded within the industry. In order to align with these BSC led changes, the REC Data Specification must be reviewed in order to update the affected Data Item – DI50178 (J0386).
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
R0164 - Change Proposal Form (Word)
R0164 Change Proposal Form (PDF)
R0164 Change Proposal Plan (Approved) V1.0
R0164 Initial Assessment Report (Approved) V1.0
R0164 Consolidated Impact Assessment Responses v1.0 23.05.24
R0164 Preliminary Change Report (Published For Consultation) V1.0 23.05.24
R0164 Consolidated Consultation Responses v1.0 20.06.24
R0164 Final Change Report (Post-Vote) v1.0 03.07.24
Company Name
Elexon
Review status
Review required
Removal of Facsimile as a Method of Code Communication
Date of latest update
Type
Change
ID
R0157
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
The Public Switched Telephone Networks (PSTN) will be switched off in December 2025 by all telecom companies and will be replaced with an Internet Protocol (IP) digital network. Existing fax machines that are incompatible with new all IP digital networks will become obsolete and no longer capable of meeting Code Communications as prescribed in the REC. All communication methods referencing fax or facsimile will need to be removed and replaced with email (where this is not an existing option), unless an alternative form of communication is needed. Please note: The government have published preparatory guidance which includes migrating to IP-supported technology in advance of the planned decommissioning. UK transition from analogue to digital landlines - GOV.UK (www.gov.uk) Critical National Infrastructure (CNI) (“assets, facilities, systems, networks or processes and the essential workers that operate and facilitate them”) which is subdivided into 13 sectors including Energy, are advised to consider how they move to digital alternatives smoothly to avoid unnecessary interruption following the PSTN switch-off. Openreach's Energy Guidance Factsheet can be found in the CPs Accompanied Documents.
Change Plan
Preliminary Change Report and Consultation Issued
Completed
Start:
03 Jan 2024Due:
09 Feb 2024Completion:
09 Feb 2024Final Change Report Issued
Completed
Start:
23 Feb 2024Due:
12 Mar 2024Completion:
12 Mar 2024Responsible Committee Decision
Completed
Start:
12 Mar 2024Due:
19 Mar 2024Completion:
19 Mar 2024Appeal Window Closure
Not Started
Start:
19 Mar 2024Due:
02 Apr 2024Completion:
Consultation Close
Completed
Start:
09 Feb 2024Due:
23 Feb 2024Completion:
23 Feb 2024Impacted Consumers
Impacted REC Documents
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
- All communication methods referencing fax or facsimile will need to be removed and replaced with email
Proposed Solution Document
Document title
Existing References to Fax and "e-mail" in the REC (January 2024)
Archive
Off
Document title
R00157 - Legal Text Changes (All Affected REC Products and Documents)
Archive
Off
Problem Statement
Existing fax machines that are incompatible with new all IP digital networks will become obsolete and no longer capable of meeting Code Communications as prescribed in the REC
Stages Selection
CP Form - Removal of a Fax as a Code Communication method
R0157 - Change Proposal Plan V1.0 (Approved) 30.01.2024
R0157 - Initial Assessment Report V1.0 (Approved) 30.01.2024
R0157 - Consolidated Consultation Responses
R0157 - Preliminary Change Report V1.0 (For Consultation) 09.02.2024
R0157 - Final Change Report V2.0 (Post-Vote) 19.03.2024
Open Reach Energy Industry Factsheet
Company Name
REC Code Manager
Review status
Review required
Clarifying Event of Default requirements
Date of latest update
Type
Change
ID
R0129
Priority
Urgent
No
Latest Update
04/10/2023 - Following the approval of R0138, this change has been withdrawn.
Summary
Following several recent events of non-payment for services and REC defaults it is clear that the event of default provisions in the Code are unclear. This change seeks to introduce clarity to the REC Main Body.
Impacted Consumers
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Date of Update to Priority
Solution Development
Stages Selection
R0129 - Change Proposal form (downloadable version) 16.06.2023
Company Name
REC Code Manager
Review status
Review required