Optional fuzzy searching in EES
Date of latest update
Type
Change
ID
R0098
Change Category
Change Path
Priority
Urgent
No
Latest Update
08/11/2024 - This Change Proposal has been implemented as part of the November 2024 REC Release.
Summary
This change seeks to introduce new configuration settings in to the EES API - to enable a search to be exact or fuzzy.
Change Plan
Service Provider Impact Assessment window start
Completed
Start:
07 Mar 2023Due:
09 Oct 2023Completion:
09 Oct 2023Service Provider Impact Assessment window close
Completed
Start:
09 Oct 2023Due:
27 Dec 2023Completion:
24 Nov 2024Party Impact Assessment start
Completed
Start:
27 Dec 2023Due:
12 Jan 2024Completion:
12 Jan 2024Party Impact Assessment close
Completed
Start:
12 Jan 2024Due:
02 Feb 2024Completion:
02 Feb 2024Preliminary Change Report and Consultation issued
Completed
Start:
02 Feb 2024Due:
16 Feb 2024Completion:
16 Feb 2024Consultation close
Completed
Start:
16 Feb 2024Due:
08 Mar 2024Completion:
08 Mar 2024Final Change Report issued
Completed
Start:
08 Mar 2024Due:
15 Mar 2024Completion:
15 Mar 2024Responsible Committee decision
Completed
Start:
15 Mar 2024Due:
27 Mar 2024Completion:
27 Mar 2024Appeal window closure
Completed
Start:
27 Mar 2024Due:
12 Apr 2024Completion:
12 Apr 2024Impacted Consumers
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
08 November 2024
| Included changes | Affected REC Items | |
|---|---|---|
| R0105 | Review of ONAGE SLAs |
|
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a Consumer, I want to be able to switch my electricity easily and efficiently.
- As an organisation providing switching services, I want Consumers to be able to search addresses efficiently.
Proposed Solution Document
Document title
EES Technical Requirement Specification v0.2
Archive
Off
Document title
EES API Interface Specification v3.1.6 - Redline
Archive
Off
Problem Statement
Where a Consumer initiates a Switch through a Supplier, PCW or TPI that utilises the EES API address searches can fail as the API only undertakes “fuzzy” matching. Address Search errors will then need to go through an exception handling process creating an inefficiency and producing a loss of confidence in the Switching process.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0098 - Change Proposal Form 08.03.2023
R0098 - Change Proposal Plan (Approved) 17.10.2023
R0098 - Initial Assessment Report (Approved) 17.10.2023
R0098 Consolidated Party IA Responses v1.0_Non Confidential (16.02.2024)
R0098 - Preliminary Change Report v1.0 published for consultation (16.02.2024)
R0098 - Consolidated Consultation Responses_Non Confidential (15.03.2024)
R0098 - Final Change Report v2.0 Post-Vote (27.03.2024)
Company Name
GB Group plc
Review status
Review required
CSS Message Regeneration Functionality
Date of latest update
Type
Change
ID
R0096
Change Category
Change Path
Priority
Urgent
No
Latest Update
25/02/2026 On 25 February 2026, the Technical Expert Panel voted in line with the Code Manager recommendation to approve R0096 for implementation in November 2027. The appeal window is now open until 23:59, 11 March 2026.
Summary
An inability by the Central Switching Service (CSS) to re-generate Market Messages that were not sent as intended can result in issues with the Switching process, both for REC Parties, and Consumers. This Change seeks to create a message regeneration functionality that would mitigate this Consumer detriment.
Change Plan
Update to Plan approved at Change Panel
Completed
Start:
Due:
Completion:
21 Oct 2025Impacted Consumers
Impacted REC Services
Status
Implementation Date
05 November 2027
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0096 Solution Development Document V1.0
Archive
Off
Document title
R0096 Detailed Design Document v1.0
Archive
Off
Problem Statement
Failures by the CSS to generate Market Messages can result in a breakdown of the Switching process. As the CSS cannot re-generate Market Messages that should have been sent but were not, this results in message asynchronisation, and breakdown of CSS functions and processes, resulting in substantial impacts for those involved – Difficulties for the REC Parties using the CSS, and difficulties for Consumers, where the Switch process is impacted.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
maxime.van-eyseren@capgemini.com
R0096 - Change Proposal Form downloadable version 17.02.2023
R0096 Change Report (Plan) (Approved) V1.0 21.01.25
R0096 Change Report Re-Plan (Pre-Approval) v1.0
R0096 Change Report (Re-Plan) v1.0 approved 21/10/2025
R0096 Change Report (Impact Assessment) v1.0
R0096 Consolidated Party Impact Assessment Responses v1.0
R0096 Change Report (Consultation) approved 17.12.2025 v1.2
R0096 Consolidated Consultation Responses v2.0
R0096 White Paper - Business Case Assessment v1.5
R0096 Change Report (Final Recommendation) approved 25.02.2026 v1.0
Company Name
REC Technical Services
Review status
Review required
MAP GES data access
Date of latest update
Type
Change
ID
R0087
Change Category
Change Path
Priority
Urgent
No
Latest Update
20/01/25 - Change Proposal withdrawn at proposers request.
Summary
As a MAP I want to be able to track my daily position of my portfolio. As a MAP I want to be able to track changes in my portfolio over time. As a MAP I want to understand who are using my assets and identify where assets are not being used
Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
Company Name
Correla
Review status
Review required
ERDS Upload File in the Data Specification and clarification of cancellation code
Date of latest update
Type
Change
ID
R0086
Priority
Urgent
No
Latest Update
06/11/2023 - Withdrawal adoption window closed.
Summary
The MPAS/ERDS Upload file has historically been a part of the Data Specification however during transition from the MRA, the process has been omitted. This change seeks to restore the file to the specification. Secondly, the file previously provided a cancellation reason code for Switches. Under the current REC arrangements (i.e. since CSS go live) Reason codes are not provided and have been defaulting to W which indicated a reason of “withdrawn” which may now be misleading. This Change Proposal has been raised to address these issues
Impacted Consumers
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
R0086 - Change Proposal Form (downloadable version)
Company Name
-
Review status
Review required
Release of Community View Data Items to MEMs in GES
Date of latest update
Type
Change
ID
R0074
Change Category
Change Path
Priority
Urgent
No
Latest Update
05/06/2023 The system changes associated with this change were successfully implemented as planned on Friday 02 June 2023.
Summary
This Change Proposal will enable MEMs to ‘Community View’ access to a limited set of data in the GES, for sites where they are not the appointed MEM.
Change Plan
Service Provider Impact Assessment
Completed
Start:
05 Oct 2022Due:
21 Nov 2022Completion:
16 Dec 2022Party Impact Assessment
Completed
Start:
21 Nov 2022Due:
21 Nov 2022Completion:
18 Dec 2022Preliminary Change Report Issued
Completed
Start:
21 Nov 2022Due:
13 Jan 2023Completion:
13 Jan 2023Consultation closure
Completed
Start:
13 Jan 2023Due:
27 Jan 2023Completion:
27 Jan 2023Responsible Committee Decision
Completed
Start:
27 Jan 2023Due:
22 Feb 2023Completion:
22 Feb 2023Impacted Consumers
Impacted REC Services
Status
Implementation Date
24 February 2023
| Included changes | Affected REC Items | |
|---|---|---|
| R0130 | Updates to the Data Access Matrix |
|
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a Consumer, I want a Metering Equipment Manager to be able to access and validate my site details, ahead of their arrival on site for planned or emergency metering work, so that I do not experience any delays in work being completed and can have continuity of supply.
- As a MEM, I want access to sufficient data for sites where I am not the Appointed MEM, to enable me to complete pre-metering works validations of the site details, so I can undertake these works correctly and safely.
- As a MEM, I want access to data for sites where I am not the Appointed MEM, so I can confirm de-appointments and answer invoice validation queries.
Proposed Solution Document
Document title
GES Data Access Matrix for R0074
Archive
Off
Problem Statement
At go-live for REC v3.0 the ‘Community View’ access to data in the GES, previously available via the DES under the UNC, was inadvertently removed. MEMs used this data in a number of processes, including validation of site details prior to metering works – particularly for emergency work, and the resolution of invoice queries from Suppliers. Without access to this Enquiry Service Data, MEMs are unable to complete activities that are central to their operations, including checking site details prior to attending emergency metering works. This has the potential to have a direct negative impact on the experience of metering works for Consumers, and in in some cases, continuity of supply and safety could be at risk.
Stages Selection
Change Proposal Form
R0074 - Change Proposal Plan v1.0
R0074 - Initial Assessment Report v1.0 (Approved)
R0074 - Consultation Responses_NON CONFIDENTIAL
R0074 - Preliminary Change Report v1.0 (Published for Consultation)
R0074 - Final Change Report v2.0 (Post-Vote) 22.02.2023
Company Name
Xoserve
Review status
Review required
Provision of Enduring Test Environments
Date of latest update
Type
Change
ID
R0070
Change Category
Change Path
Priority
Urgent
No
Latest Update
28/06/2024 - Change implemented as part of the June 2024 REC Release
Summary
Currently the REC does not require the Central Switching Service (CSS) and Switching Operator (SO) to provide the enduring test environments and test data for use by REC Parties when making necessary system changes for REC Change Proposals or internal system updates. This Change Proposal has been raised to introduce these obligations in to the REC.
Change Plan
Solution Analysis and Development
Completed
Start:
09 Sep 2022Due:
06 Jun 2023Completion:
06 Jun 2023Service Provider Impact Assessment Period
Completed
Start:
06 Jun 2023Due:
06 Oct 2023Completion:
06 Oct 2023Service Provider Impact Assessment
Completed
Start:
24 Nov 2023Due:
03 Jan 2024Completion:
03 Jan 2024Party Impact Assessment Issued
Completed
Start:
06 Oct 2023Due:
24 Nov 2023Completion:
24 Nov 2023Preliminary Change Report Issued
Completed
Start:
03 Jan 2024Due:
16 Jan 2024Completion:
16 Jan 2024Responsible Committee Review
Completed
Start:
16 Jan 2024Due:
23 Jan 2024Completion:
23 Jan 2024Consultation Issued
Completed
Start:
23 Jan 2024Due:
26 Jan 2024Completion:
26 Jan 2024Final Change Report Issued
Completed
Start:
26 Jan 2024Due:
23 Feb 2024Completion:
23 Feb 2024Responsible Committee Decision
Completed
Start:
23 Feb 2024Due:
05 Mar 2024Completion:
05 Mar 2024Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
28 June 2024
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a CSS User I want access to a CSS Test Environment, to enable me to test my systems and processes ahead of the implementation of complex or significant changes, so that I can identify any issues prior to go-live.
- As the SO, I want clarity on the obligations placed on me regarding the provision and maintenance of CSS Test Environments and data, so that I can meet my obligations and provide CSS Users and Service Providers with access to appropriate Test Environments.
- As a Switching Data Service Provider (SDSP), I want clarity on the obligations placed on me regarding the provision and maintenance of Test Environments and data, so that I can meet my obligations to test CSS changes. As a Switching Data Service Provider (SDSP), I want access to a CSS Test Environment, to enable me to test my systems and processes ahead of the implementation of complex or significant changes, so that I can identify any issues and address prior to go-live.
Proposed Solution Document
Document title
R0070 legal text v1.0 - Published with Impact Assessment
Archive
Off
Document title
R0070 Legal Text v2.0 - Published with Preliminary Change Report
Archive
Off
Document title
R0070 - Legal Text v3.0 - Approved for Implementation
Archive
Off
Document title
REC Category 3 - Environment Management Plan
Archive
Off
Document title
REC Category 3 Test Data Management Plan
Archive
Off
Problem Statement
For specific types of changes, industry system testing will be required to ensure the end-to-end Switching processes will work as expected following implementation. If Test Environments and Test Data are not available, CSS Users will not be able to complete testing to confirm their systems will operate correctly in the live environment. The REC currently doesn’t define specific obligations on Service Providers regarding enduring test systems and Test Data for Switching processes. The lack of specific obligations may impact the availability of appropriate Test Environments. This could impact the progression of improvements to Switching processes that require a technical change.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
beth.brown@capgemini.com
R0070 Initial Assessment Report v1.0 (Approved)
R0070 - Preliminary Change Report (Approved 23.01.2024)
R0070 - Change Proposal Plan v2.0 (Approved)
R0070 - Change Proposal Form
R0070 - Consolidated Impact Assessment Responses
R0070 - Consolidated Consultation Responses
R0070 - Final Change Report V2.0 (Post-Vote) 05.03.2024
Company Name
-
Review status
Review required
Clarification of Supplier of Last Resort Obligations under the REC
Date of latest update
Type
Change
ID
R0057
Change Category
Change Path
Priority
Urgent
No
Latest Update
04/08/2023 - Change Proposal has been withdrawn as agreed with the Proposer. The Problem Statement was addressed through C3-0047 - Updates to PAB Procedures.
Summary
Within Schedule 19 – Market Exit and Supplier of Last Resort there is currently no consideration of circumstances where the Replacement Supplier is unable to fulfil its REC obligations in respect of Consumers transferred to them, due to them having little or no control over the processes of the failed supplier or it’s administrator. This change seeks to define when the Replacement Supplier is responsible for obligations relating to the Consumers gained through a Supplier of Last Resort (SoLR) Process.
Impacted Consumers
Impacted REC Documents
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 when my Energy Supplier goes out of business and I am transferred to a Replacement Supplier, I want my supply transfer to be handled quickly and have confidence that my new Supplier has all the necessary data to set up my account and bill me correctly from the transfer date, and if the Replacement Supplier fails to provide the expected level of service they will be appropriately held accountable.
- As a Replacement Supplier, I want the limitations affecting my ability to meet my REC obligations to be understood by the REC Code Manager and the Performance Assurance Board, so that any breaches of obligations are considered fairly and any limitations are taken into consideration.
- As the Code Manager I want to apply appropriate and proportionate Performance Assurance Techniques, taking in to account the ability of a Replacement Supplier to meet their obligations under the REC.
Proposed Solution Document
Document title
R0057 Draft Legal Text
Archive
Off
Problem Statement
Currently, Replacement Suppliers are responsible for all obligations of the failed supplier from the date and time set out in the Last Resort Supply Direction, this includes a period of time prior to Consumer accounts transferring to the Replacement Supplier’s systems, limiting their ability to fulfil these obligations. This means that a Replacement Supplier may experience issues with the Performance Assurance obligations for which they are responsible, but do not have direct control over. Any breaches of obligations by a Replacement Supplier need to be considered fairly and any limitations the Replacement Supplier may face are taken into consideration.
Stages Selection
R0057 - Change Proposal Form
R0057 - Solution Options
R0057 - Consolidated Impact Assessment Responses
R0057 - Change Proposal Plan v1.0
R0057 - Initial Assessment Report v1.0 (Approved)
R0057 - Preliminary Change Report V1.0 (Approved)
Company Name
EDF
Review status
Review required
Switch Request Objections (Change of Occupier)
Date of latest update
Type
Change
ID
R0051
Change Category
Change Path
Priority
Urgent
No
Latest Update
26/01/2024 - Withdrawn following adoption window closure.
Summary
This Change Proposal looks to clarity obligations regarding the losing suppliers' rights to object and the circumstances surrounding registrations by gaining suppliers, following the migration from the MRA to the REC.
Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Stages Selection
R0051 - Downloadable CP form
Company Name
Business Energy Direct
Review status
Review required
Clarification of REC Maintenance of Qualification Schedule
Date of latest update
Type
Change
ID
R0050
Urgent
No
Latest Update
Change withdrawn following agreement to combine with R0059
Summary
_
Impacted Consumers
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Date of Update to Priority
Solution Development
Stages Selection
R0050 - Downloadable Change Proposal form
Company Name
-
Review status
Review required
MHHS Programme Changes required to Central Switching Service
Date of latest update
Type
Change
ID
R0044
Change Category
Other Industry Codes impacted
Urgent
Yes
Latest Update
22/09/25 - This Change Proposal has been implemented as part of the MHHS M8 22 September 2025 REC Release.
Summary
This change has been raised by the Market-wide Half-Hourly Settlement (MHHS) Programme to implement the necessary Retail Energy Code (REC) changes in relation to a new Data Communications Company User Role for the Meter Data Retrieval service (MDR). The new role required by the MHHS Target Operating Model will be established by the Smart Energy Code Modification Proposal, SEC MP162. This REC change will provide the new system interfaces required for sharing the MDR’s Registration Data.
Change Plan
Analysis and Requirements Gathering started
Completed
Start:
29 Apr 2022Due:
05 May 2022Completion:
05 May 2022Present Updated Change Proposal Plan to REC Change Panel
Completed
Start:
05 May 2022Due:
21 Jun 2022Completion:
21 Jun 2022Service Provider Impact Assessment initiated
Completed
Start:
21 Jun 2022Due:
11 Jul 2022Completion:
05 Jul 2022Service Provider Impact Assessment completed
Completed
Start:
11 Jul 2022Due:
15 Aug 2022Completion:
10 Aug 2022Present extended Change Proposal Plan to Change Panel
Completed
Start:
15 Aug 2022Due:
06 Sep 2022Completion:
06 Sep 2022Requirement refinement and validation of Detailed Impact Assessment
Completed
Start:
06 Sep 2022Due:
27 Sep 2022Completion:
27 Sep 2022Provide extended Change Proposal Plan to Change Panel
Completed
Start:
28 Oct 2022Due:
31 Oct 2022Completion:
25 Oct 2022Preliminary Change Report Issued
Completed
Start:
27 Sep 2022Due:
28 Oct 2022Completion:
27 Oct 2022Responsible Committee Review of the Preliminary Change Report
Completed
Start:
31 Oct 2022Due:
01 Nov 2022Completion:
01 Nov 2022Consultation started
Completed
Start:
01 Nov 2022Due:
04 Nov 2022Completion:
03 Nov 2022Consultation ended
Completed
Start:
04 Nov 2022Due:
25 Nov 2022Completion:
25 Nov 2022Final Change Report issued
Completed
Start:
25 Nov 2022Due:
09 Dec 2022Completion:
09 Dec 2022Responsible Committee ex-committee decision
Completed
Start:
09 Dec 2022Due:
13 Dec 2022Completion:
13 Dec 2022Authority Determination
Completed
Start:
13 Dec 2022Due:
02 Feb 2023Completion:
02 Feb 2023Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
MHHS Programme Milestone M8 (Code changes delivered)
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As the SMDSP, I want to be able to validate that an SMDR is registered so that I can provide them with access to the Metering Points to which they are registered.
- As a SMDR, I want to be able to access the Metering Points I am registered to so that I can collect settlement data from those meters
- As the CSS Provider, I want the CSS to be able to receive notifications from the Registration Service on the appointment/de-appointment of an SMDR so that I can send the appointment data to the SMDSP. As the CSS Provider, I want the CSS to be able to provide SMDR appointment data to the SMDSP.
Proposed Solution Document
Document title
R0044 - Draft Legal Text
Archive
Off
Document title
R0044 Final Legal Text (Post Consultation)
Archive
Off
Document title
Consultation page
Archive
Off
Document title
Link to EMAR Change Set
Archive
Off
Problem Statement
The MHHS Target Operating Model requires that the appointment data of the Smart Meter Data Retriever (SMDR) is available to the Smart Meter Data Service Provider (SMDSP), so that the SMDSP can provide SMDRs with access to the Smart Meters at Metering Points they are registered to. Currently the new SMDR role and appointment data do not exist in, nor can they be made available from, CSS as this is a new industry operating model.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0044 - Change Proposal form v1.0
MHHSP-BP003A-CSSandDCC Update - v3.0
R0044 Change Proposal Plan v5.0 (Approved)
R0044 Initial Assessment Report v1.0 (Approved)
R0044 - Preliminary Change Report v1.0 (Approved)
R0044 - Consolidated Consultation Responses v1.0
R0044 - Final Change Report v2.0 (Post-Vote)
R0044 - Ofgem Decision
Company Name
MHHS Programme
Review status
Review required