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
Schedule 23 - Registration Services 2.1
– Implemented on
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Schedule 23 - Registration Services 2.0
– Implemented on
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Schedule 23 - Registration Services 1.4
– Implemented on
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Additional Registration Data (Gas) under Smart Energy Code
Date of latest update
Type
Issue
ID
I0262
Change Category
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
19/06/2026 - Change Report Re-Plan V4.0 approved by Change Panel.
Summary
Gas Transporters (GTs) only have a single obligation in the Smart Energy Code (SEC). This obligation relates to the provision of Registration Data to the DCC. This issue is exploring whether these obligations may be transferred to the REC.
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
Gas Transporters have very few obligations under the Smart Energy Code; those that they do have relate to provision of data owned by the REC. If these obligations were to be moved from the SEC to the REC, then the regulatory burden on GTs may be reduced as they would be able to completely secede from the SEC.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal Submission form
I0262 Change Report (Plan) (Approved) V5.0 19.06.26
I0262 Change Report Re-Plan V4.0 19.06
Company Name
-
Review status
Review required
Schedule 23 - Registration Services 1.3
– Implemented on
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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
Schedule 23 - Registration Services 1.2
– Implemented on
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Stranded RMPs in Defunct Suppliers
Date of latest update
Type
Issue
ID
I0219
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
27/02/2025 - Change is now not being merged into any other changes and will proceed as a standalone change. A potential solution has been identified, but will be discussed for potential cross code impacts
Summary
Currently within Schedule 23 a Registration can only be undertaken on RMPs with an Operational or Dormant RMP Status, and not Terminated. Terminated is a status that the RMP is set to when the Meter Point Status is no longer operational or the site is isolated. It is right that these sites are not able to be Registered as there is a risk that Suppliers could inadvertently Register such Meter Points. We do have instances where such sites are stranded in defunct Supplier portfolios - and the Supplier no longer has the capability to take the relevant action to Deactivate the Registrations. This may because the operational staff have left and the business is in administration.
Change Plan
Discussed at Technical Change Workshop
Completed
Start:
Due:
Completion:
25 Feb 2025Impacted Consumers
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
SME
SME Role
Lead Technical Analyst
SME User
maxime.van-eyseren@capgemini.com
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
Issue Proposal Form
Company Name
Xoserve
Review status
Review required