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
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30/03/2026 The Proposer has withdrawn this Issue following discussions with industry, where impacted Parties advised waiting for the completion of MHHS migration before progressing this Issue and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
Proposal to Enable Broader Use of Retail Energy Location (REL) Data for Non-Switching Applications
Date of latest update
Type
Issue
ID
I0218
Change Category
Change Path
Priority
Urgent
No
Latest Update
04/08/2026 - On 04 August 2026, the REC Change Panel approved the extension to plan for I0218. Service Provider Impact Assessments are in progress.
Summary
The problem being addressed is the current restriction within the Retail Energy Code (REC) that limits the use of Retail Energy Location (REL) data solely to switching purposes. This restriction prevents the full utilisation of REL data, which could be valuable for a broader range of operational, regulatory, and industry applications. Key Issues: - Currently, REL data, enriched with Unique Property Reference Numbers (UPRNs), is available via the Electricity and Gas Enquiry Services. However, Schedule 29 (Address Management) of the REC restricts its use to switching purposes only, preventing its use in other important industry initiatives. - Various industry stakeholders, including REC and non-REC data requestors as well as Ofgem (the regulator), have expressed a strong interest in utilising REL data for non-switching purposes. The restriction is seen as a limitation, especially for initiatives that require accurate property data to support wider operational and regulatory functions. - By restricting the use of REL data to switching, stakeholders are unable to fully leverage it for improving operational efficiency, regulatory compliance, and overall service delivery. Lifting this restriction would enable the wider use of REL data, allowing stakeholders to benefit from its full potential across various non-switching applications.
Change Plan
Proposal plan approved at Change Panel
Completed
Start:
Due:
Completion:
21 Jan 2025Extension to Proposal Plan approved by REC Change Panel
Completed
Start:
Due:
Completion:
06 May 2025Impacted Consumers
Impacted REC Documents
Impacted REC Services
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- RECCo would acquire a AddressBase Core license from Ordinance Survey and the REC would be updated to allow parties to take full advantage of this data. In order for parties to use the REL data, they would need to acquire an AddressBase Premium license from Ordinance Survey or other relevant license.
Problem Statement
Retail Energy Location (REL) data currently is not permitted for uses such as improving customer service and streamlining internal processes. This means that stakeholders, such as Ofgem and data requestors, have been unable to benefit from this data and Consumers are therefore unable to benefit from the full potential use of their data.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
rosalind.timperley
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
Issue proposal form
I0218 - Change Report (Proposal Plan) V2.0 (07.05.2025)
I0218 - Extension to Plan V1.0 (06.05.2025) (Approved)
I0218 - Update to Plan V2.0 (09.09.2025) (Approved)
I0218 - Update to Plan V3.0 (18.11.2025) Approved
I0218 Extension to Plan V1.0 Pre-Approval
I0218 - Extension to Plan V2.0 (04.08.2026) Approved
Company Name
RECCo
Review status
Review required
Provision of Half-Hourly Consumption Data for Advanced Meter Erroneous Switches
Date of latest update
Type
Change
ID
R0205
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
As part of the MHHS REC code change activity, a change has been made to REC Schedule 30 to remove the half hourly meter exemption from the Erroneous Transfer provisions. Whilst this is necessary from an MHHS perspective with all sites becoming half hourly settled, the application of ET obligations in the Advanced Meter segment creates some additional challenges. To be able to accurately bill an Advanced Meter site, following repatriation of that customer to their correct supplier after an ET has been raised / agreed, the supplier needs to have access to half hourly consumption data for the ET period when they were not the registered supplier. With ETs potentially taking up to 2 years to be identified and resolved, the only place that the supplier could reliably source that HH consumption data would be from the other (losing) supplier.
Change Plan
Change Proposal Plan to REC Change Panel
Provision of Half-Hourly Consumption Data for Advanced Meter Erroneous Switches > Change Plan
Start:
22 Aug 2024Due:
01 Apr 2025Completion:
01 Apr 2025Discussion at REC Change Issues Group
Provision of Half-Hourly Consumption Data for Advanced Meter Erroneous Switches > Change Plan
Start:
01 Apr 2025Due:
05 Jun 2025Completion:
Impacted Consumers
Impacted REC Documents
Impacted REC Services
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
- An approval of this Issue/Change Proposal would see an obligation placed upon the Losing Supplier, following a successful Erroneous Switch repatriation, to provide the Gaining Supplier with the Half-Hourly consumption data for the period in which they were erroneously supplying the meter.
- Half-Hourly consumption data would be providing to the Gaining Supplier, from the Losing Supplier, via SDEP using an Excel template within 5 Working Days of the Erroneous Switch repatriation switch date. The Gaining Supplier would be required to provide 48 Half-Hourly consumption intervals for each that the the Consumer was supplied by the erroneously Gaining Supplier.
Proposed Solution Document
Document title
I0205 - Draft Legal Text (Schedule 30) - for Party Impact Assessment 10.06.2025
Archive
Off
Document title
I0205 - Draft Reporting Templates
Archive
Off
Document title
I0205 - Impact Assessment
Archive
Off
Document title
R0205 - Schedule 30 Legal Drafting 15.08.2025
Archive
Off
Document title
R0205 - Advanced Meter Half-Hourly Consumption Data Sharing Template
Archive
Off
Problem Statement
In the absence of having Half-Hourly consumption data for Erroneously Switched Consumers, Energy Suppliers are currently required to estimate consumption for billing purposes that can lead to inaccurate billing.
Stages Selection
I01205 - Change Proposal Form
I0205 - Change Report (Proposal Plan) V1.0 Approved (01.04.2025)
I0205 Consolidated Impact Assessment Responses V1.0 (Non-Confidential) 30.07.2025
R0205 - Consolidated Consultation Responses (09.09.2025)
R0205 Change Report (Final Recommendation) V2.0 (Approved) 16.09.2025
Company Name
Centrica
Review status
Review required
Amendment Proposal: RECCo Access Provision to RECCo Services
Date of latest update
Type
Change
ID
R0185
Change Path
Priority
Urgent
No
Latest Update
08/08/2024 - the Proposer has withdrawn this Change Proposal.
Summary
RECCo is tasked with fulfilling several obligations. This proposal has been raised to amend some of the wording within the REC, which would benefit from reassessment. When the REC was originally drafted, references to RECCo in the code were originally intended to refer to the activities directly managed and overseen by the REC Board, and were considered separately to activities managed by the Code Manager.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Date of Update to Priority
Solution Development
Stages Selection
R0185- CP Form Amendment Proposal RECCo Access Provision to RECCo Services.docx
Company Name
RECCo
Review status
Review required
Proposal for Limiting Queries in EES API Calls (Single Query per API Call)
Date of latest update
Type
Change
ID
R0179
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 issue has been raised proposing to establish a limit on the number of queries permitted within a single Application Programming Interface (API) call. As there is potential for performance degradation and system instability that can occur when a large number of queries are made in a single API call to the Electricity Enquiry Services (EES) API. The aim would be to prevent overwhelming the system and ensure consistent response times and reliability. Therefore, this proposes implementing a limit of 1000 queries per single API call.
Change Plan
Request for Information
Completed
Start:
03 Jun 2024Due:
05 Jul 2024Completion:
05 Jul 2024Change Issue Group
Completed
Start:
05 Jul 2024Due:
01 Aug 2024Completion:
01 Aug 2024Impacted Consumers
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
Request For Information (RFI)
Archive
Off
Problem Statement
The absence of a limit on the number of queries (batch processing) within a single API call could cause performance issues and system instability. As a result, system responsiveness may degrade when a large number of queries are made in a single call, impacting user experience and hindering the ability of the EES API to consistently meet user demands.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
maxime.van-eyseren@capgemini.com
Issue Form
EES API Interface Specification REDLINE DRAFT for R0179
R0179 - Change Report - Final Recommendation Approved
R0179 Change Report (Consultation)
R0179 Consolidated consultation responses (non- confidential)
Re-baseline Change Plan 15.07.25
Consolidated IA responses (non-confidential)
I0179 Change Report (Impact Assessment)
Service Provider - Impacts Data
I0179 - Consolidated RFI Responses
Change Report (Proposal Plan)
Consultation on implementation date response
Change Report - Final Recommendation (new implementation date)
Company Name
RECCo
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
Allowing different Metering Equipment Managers (MEMs) to be appointed to Import and Export Metering Points
Date of latest update
Type
Change
ID
R0144
Change Category
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
17/02/2025 - R0144 has been withdrawn by the Proposer, alongside it's joint BSC Change P459, as they cannot be progressed prior to MHHS. The Proposer will look to re-raise both changes in the future. The adoption window for this withdrawal has closed.
Summary
The Export Supplier needs to be able to appoint different MEMs to that of the Import Supplier
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 summary
- As a Consumer, I want a competitive Export market so I can get the best rates for the energy I generate. I want clear metering equipment ownership so I can be confident my meter is functional and safe. I want accurate billing from my Export Supplier.
- As an Export Supplier, I want to be able to appoint the MEM that ties in with my commercial strategy.
- As a MEM, I want clear guidance on the responsibilities I have for any metering equipment I am appointed to.
Problem Statement
Export Suppliers may become non-compliant with industry regulations if they are unable to appoint the same MEM as the Import Supplier, for example when the Consumer switches Import Supplier or when the Import Supplier changes the appointed MEM.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
maxime.van-eyseren@capgemini.com
Change Proposal Form
R0144 Change Proposal Plan Withdrawal v1.0 (Pre Approval)
R0144 Change Proposal Plan v1.0 (16.04.2024) Approved
R0144 Initial Assessment Report v1.0 (16.04.2024) Approved
Company Name
REC Code Manager
Review status
Review required
Add DESNZ to Schedule 12
Date of latest update
Type
Change
ID
R0135
Change Category
Change Path
Priority
Urgent
No
Latest Update
22/03/2024 - Withdrawn.
Summary
Empty
Impacted Consumers
Impacted REC Documents
Impacted REC Services
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Stages Selection
R0135 - Change Proposal Form
Company Name
BEIS (Department for Business, Energy and Industrial Strategy)
Review status
Review required