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
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
Request to Continue Processing ECOES Password Resets on Behalf of MAU
Date of latest update
Type
Issue
ID
I0245
Urgent
No
Latest Update
02/06/2025 - this Issue has been rejected by the Code Manager
Summary
To highlight the recent challenges we have experienced with the ECOES password reset process and to request that Mitie be allowed to continue processing password resets on behalf of the MAU.
Impacted REC Services
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
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
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
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
Shared Sites in Electricity Enquiry Service (EES)
Date of latest update
Type
Issue
ID
I0231
Change Category
Change Path
Priority
Urgent
No
Latest Update
30/03/2026 The Proposer has withdrawn this Issue following discussions with industry, where impacted Parties advised waiting for the completion of MHHS migration before progressing this Issue and solution development. The window to adopt this Issue has now closed.
Summary
There is a concern regarding shared sites (as defined by BSCP550) that have multiple suppliers linked to them. The investigation revealed a lack of visibility of these sites, and it appears that the industry is similarly uninformed. Elexon, the REC, and the wider industry do not have a consistent way of identifying these shared sites. Therefore, there is a good chance that agents are holding shared sites within their portfolio without knowing it. We would like to explore whether the EES Online Portal has any flags or mechanisms that could help identify these shared sites.
Impacted REC Services
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- A flag on EES that can help everyone clearly identify the shared site, the primary MPAN and all of the pseudo MPANs attached to it.
Problem Statement
There is a concern regarding shared sites (as defined by BSCP550) that have multiple suppliers linked to them. The investigation revealed a lack of visibility of these sites, and it appears that the industry is similarly uninformed. Elexon, the REC, and the wider industry do not have a consistent way of identifying these shared sites. Therefore, there is a good chance that agents are holding shared sites within their portfolio without knowing it. We would like to explore whether the EES Online Portal has any flags or mechanisms that could help identify these shared sites. If not, could these be added?
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Issue Proposal Form
Company Name
-
Review status
Review required
D0303 flow following MHHS design changes
Date of latest update
Type
Issue
ID
I0230
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
29/04/2026 - This Issue has been withdrawn by the Proposer, as there was not a strong preference amongst MAPs of which temporary solution option (if any) should be progressed. Many MAPs already have workarounds in place, and a permanent solution is expected to be progressed in the future through a joint REC / BSC change. The adoption window has closed.
Summary
As part of Market Wide Half Hourly Settlement (MHHS) design, the requirement to provide Data Item Effective from Settlement Date {REGI} (J0049 / DI50025) in the Notification of Meter Operator, Supplier and Metering Assets installed / removed by the MOP to the MAP Market Message (D0303 / MM00240) has been changed from mandatory to optional. This means Meter Asset Providers (MAP) may not receive it.
Change Plan
Change Report (Proposal Plan) approved at Change Panel
Completed
Start:
Due:
Completion:
04 Nov 2025Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
The Effective from Settlement Date {REGI} Data Item being optional rather than mandatory inside the Notification of Meter Operator, Supplier and Metering Assets installed / removed by the MOP to the MAP Market Message means that MAPs may not receive this information required for billing purposes.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
Issue Proposal Form
I0230 Change Report (Proposal Plan) V1.0 approved 04.11.25
I0230 and I0261 Solution Development Report V1.0
I0230 I0261 Q&A session V1.0
I0230 and I0261 Consolidated IR Responses PUBLIC V1.0
Company Name
-
Review status
Review required