A review of Supplier access to data on GES
Date of latest update
Type
Change
ID
R0110
Change Category
Change Path
Priority
Urgent
No
Latest Update
03/11/23 - This change was implemented on 03 November 2023 as part of the November 2023 REC Release
Summary
When Registered Gas Suppliers and Registered Shippers access the Gas Enquiry Service (GES) they currently have access to their own unique set of Data Items. This Change would give Registered Gas Suppliers access to some additional Data Items which form part of the Registered Gas Shipper Data Items, to enable them to solve Consumer facing switching and billing issues.
Change Plan
Service Provider Impact Assessment Due
Completed
Start:
19 Apr 2023Due:
07 Sep 2023Completion:
07 Sep 2023Preliminary Change Report Issued
Completed
Start:
07 Sep 2023Due:
20 Sep 2023Completion:
20 Sep 2023Responsible Committee Review
Completed
Start:
20 Sep 2023Due:
27 Sep 2023Completion:
27 Sep 2023Consultation Issued
Completed
Start:
27 Sep 2023Due:
27 Sep 2023Completion:
11 Oct 2023Final Change Report Issued
Completed
Start:
27 Sep 2023Due:
18 Oct 2023Completion:
18 Oct 2023Responsible Committee Decision
Completed
Start:
18 Oct 2023Due:
25 Oct 2023Completion:
25 Oct 2023Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
03 November 2023
| Included changes | Affected REC Items | |
|---|---|---|
| R0104 | Clarifying requirement for continuous billing following an Erroneous Switch |
Documents
| Name | Version | Last updated | Actions |
|---|---|---|---|
| 1.0 | 08 Jun 2026 |
|
|
| 1.0 | 08 Jun 2026 |
|
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Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a Consumer, I want my Supplier to be able to access essential information about my energy account, so that billing issues and switching problems can be addressed easily.
- As a Registered Gas Supplier, I want to be able to readily access appropriate information relating to my RMP portfolio, so that I can resolve consumer facing billing issues more easily. As the GES Provider, I want my users to be able to access information that helps them fulfil their objectives (in line with REC Data Access principles), so that the service is used as efficiently as possible.
Proposed Solution Document
Document title
R0110 - Draft Legal Text - Gas Data Access Matrix - 20.09.2023
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Problem Statement
When Registered Gas Suppliers need to resolve queries relating to meter reading history, they may need to access information that is currently only available to the Registered Shipper in GES. As a result, Registered Gas Suppliers may be unable to resolve these consumer facing issues on their own, as they do not have direct access to the required Registered Shipper only information.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0110 - CP Form (Downloadable Version)
R0110 Initial Assessment Report v1.0 (Approved) - 01.08.2023
R0110 Change Proposal Plan v1.0 (Approved) - 01.08.2023
R0110 Preliminary Change Report v1.0 (Approved) - 27.09.23
R0110 Consolidated Consultation Responses - Non-Confidential v1.0
R0110 Final Change Report v2.0 (Post-Vote) 25.10.23
Company Name
ScottishPower Energy Retail Ltd
Review status
Review required
Aligning electricity and gas timescale requirements for sharing Meter Technical Detail information
Date of latest update
Type
Change
ID
R0109
Change Category
Change Path
Priority
Urgent
No
Latest Update
22/03/2024 - Withdrawn.
Summary
Empty
Impacted Consumers
Impacted REC Documents
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0109 - Change Proposal Form
Company Name
Utility Warehouse
Review status
Review required
Enabling Electricity Enquiry Service searches using a Unique Property Reference Number
Date of latest update
Type
Change
ID
R0108
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
Consumers that wish to utilise multi-channel switching services for gas, electricity, water, broadband, bank, home insurance etc. cannot make use of generic address-capture services for electricity switching as Unique Property Reference Number (UPRN) search functionality is not available within the Electricity Enquiry Service (EES).
Change Plan
Service Provider Impact Assessment window start
Completed
Start:
19 Apr 2023Due:
02 Oct 2023Completion:
02 Oct 2023Service Provider Impact Assessment window close
Completed
Start:
02 Oct 2023Due:
18 Dec 2023Completion:
18 Dec 2023Party Impact Assessment start
Completed
Start:
18 Dec 2023Due:
12 Jan 2024Completion:
12 Jan 2024Preliminary Change Report and Consultation issued
Completed
Start:
02 Feb 2024Due:
16 Feb 2024Completion:
16 Feb 2024Party Impact Assessment close
Completed
Start:
12 Jan 2024Due:
02 Feb 2024Completion:
02 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 I Consumer, I want to be able to quote or switch my electricity as part of a packaged search.
- As a Supplier, I want Consumers to be able to search for quotes and switch efficiently.
- As an organisation providing multi-channel switching services, I want Consumers to be able to use one set of data when requesting quotes.
Proposed Solution Document
Document title
R0108 Requirements Specification v0.1
Archive
Off
Document title
Electricity Data Access Matrix_R0108 Draft
Archive
Off
Document title
EES API Interface Specification v3.1.6 - Redline
Archive
Off
Problem Statement
Consumers that wish to utilise multi-channel switching services, cannot benefit from the efficiencies of using a UPRN for the electricity Switch as the EES does not provide this functionality.
Stages Selection
SME
SME Role
Lead Technical Analyst
Change Proposal Form
R0108 - Change Proposal Plan (Approved) 17.10.2023
R0108 - Initial Assessment Report (Approved) 17.10.2023
R0108 Consolidated Party IA Responses v1.0 Non-confidential (16.02.2024)
R0108 - Preliminary Change Report v1.0 published for consultation (16.02.2024)
R0108 - Consolidated Consultation Responses_Non Confidential (15.03.2024)
R0108 - Final Change Report v2.0 Post-Vote (27.03.2024)
Company Name
GB Group plc
Review status
Review required
CSS Message Time Stamping
Date of latest update
Type
Change
ID
R0107
Urgent
No
Latest Update
11/08/2023 - This Change Proposal has been withdrawn. During the progression of the Preliminary Impact Assessment work, it was found that an existing data item ‘EventDate’ could be leveraged to address the issue stated in the Change Proposal. R107 will be open for adoption until 25/08/2023.
Summary
Empty
Change Plan
Test
In Progress
Start:
14 Apr 2023Due:
19 Mar 2026Completion:
19 Mar 2026Impacted 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
SME
SME Role
Lead Technical Analyst
SME User
caroline.milner@capgemini.com
R0107 - Change Proposal Form
Company Name
DCC
Review status
Review required
Revision of the Implementation Date and approved solution for R0021
Date of latest update
Type
Change
ID
R0101
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
Yes
Latest Update
30/06/2023 - This change was implemented on 30 June 2023 as part of the June 2023 REC Release
Summary
Updated 28 April 2023: Following discussions with DCUSA and Ofgem, this change has been amended to remove reference to deferral of R0021. The Change will focus on providing clarity on the proposed solution and Market Messages to be used when Safe Isolation Works are undertaken. The implementation approach has been amended to a Phased Implementation Approach between 30 June and 03 November 2023.
Change Plan
Solution Analysis and Development
Completed
Start:
23 Mar 2023Due:
31 Mar 2023Completion:
31 Mar 2023Responsible Committee Review Completed
Completed
Start:
31 Mar 2023Due:
27 Apr 2023Completion:
27 Apr 2023Consultation Started
Completed
Start:
27 Apr 2023Due:
28 Apr 2023Completion:
28 Apr 2023Consultation Ended
Completed
Start:
28 Apr 2023Due:
16 May 2023Completion:
16 May 2023Final Change Report Issued
Completed
Start:
16 May 2023Due:
19 May 2023Completion:
19 May 2023Responsible Committee Recommendation
Completed
Start:
19 May 2023Due:
26 May 2023Completion:
26 May 2023Impacted Consumers
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Date
30 June 2023
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a premise owner I want to be able to contract with a Safe Isolator Provider (SIP), and for the SIP to be able to provide the service in a fully compliant manner.
- As a REC MEM who wants to operate as SIP, I need clarity on the solution and Market Message requirements when I provide Safe Isolation Works to Premise Owners. As a Registered Supplier, I need clarity on the solution and Market Message requirements when my consumers have Safe Isolation Works completed at their Premise Owners by SIPs.
- As a Distribution Network Operator, I need clarity on the solution and Market Message requirements when my connected parties have Safe Isolation Works completed at their Premise Owners by SIPs.
Proposed Solution Document
Document title
R0101 - Legal text changes for FCR - 19.05.2023
Archive
Off
Document title
FCR R0101 MM & Standards Definition v2.0
Archive
Off
Problem Statement
Updated: 28/04/2023. Following an implementation webinar for R0021 on 2 March, several matters were raised by Parties regarding the solution and the Market Messages that the Code Managers needs to address to ensure that the solution approved by Ofgem can be implemented successfully.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0101 Change Proposal Form (downloadable version) 23.03.2023
R0101 - Safe Isolation Provider Solution Overview - V5.0 19.5.2023
R0101 - Initial Assessment Report (approved) - v1.0 06.04.2023
R0101 - Change Proposal Plan - v3.0
R0101 Preliminary Change Report v2.0 (Approved) 28.04.2023
Phased Implementation Approach v1.0 28.04.2023
FAQ's Webinar 09 May 2023 v1.0
Non-Confidential Consolidated Consultation Responses v1.0 19.05.2023
R0101 - Draft Legal text for FCR v2.0 MM & Standards Definition
R0101 Final Change Report
Company Name
REC
Review status
Review required
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