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11/08/2023 - This Change Proposal has been withdrawn.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
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
Resolution of invalid CSS data by Data Owners
Date of latest update
Type
Change
ID
R0061
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
04 March 2024 - Change has been withdrawn following implementation of a solution outside of the REC Change Process. 10WD window to adopt change will close on 18 March 2024.
Summary
Data is sent via the Supplier or MEM to update MPRS, which is then sent to CSS. If the data is considered invalid at CSS, an error is returned to MPRS. MPRS is the conduit of data from the Suppliers & MEMs to CSS, and ERDAs are not responsible for the data, therefore only the supplier/MEM can correct the data. The incidents must be put on hold until the owner of the data corrects the issue, this is to prevent SLA breaches. SLAs does not apply to the Supplier/MEM explicitly, so the incidents remain in the DNOs/IDNOs queue with the need to chase every few days to prevent the incident being closed. The responsibility for the incidents should be on the data owners (Suppliers/MEMs).
Change Plan
Solution Analysis and Development
Completed
Start:
22 Aug 2022Due:
15 Aug 2023Completion:
15 Aug 2023Service Provider Impact Assessment Due
Completed
Start:
15 Aug 2023Due:
19 Oct 2023Completion:
19 Oct 2023Impacted 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 data relating to my energy supply to be accurate, so that I can have a consistent and faultless switching experience. As a Consumer, I want any data issues related to my switch to be resolved quickly and by the party responsible, to ensure a fast and efficient switching experience.
- As a DNO, I want my service level requirements to be reflective of my data ownership responsibilities, so that data queries can be resolved more efficiently. As the CSS Service Desk provider, I want my tickets to be allocated to the most appropriate party able to resolve them.
Proposed Solution Document
Document title
R0061 Solution - Service Desk Guidance Article
Archive
Off
Problem Statement
DNO/iDNOs are obligated to resolve data mismatches identified by the CSS during the switch process. However, they are unable to do so in cases where the Supplier/MEM owns data required to resolve the mismatch. Tickets assigned to the DNO (via MPRS) are therefore not going to the party best placed to resolve them, resulting in DNOs chasing the incident resolution every few days to prevent them being closed incorrectly.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0061 - Change Proposal Form
R0061 - Initial Assessment Report v1.0 (Approved) - 18.07.2023
R0061 - Change Proposal Plan v1.0 (Approved) - 18.07.2023
R0061 Change Proposal Re-Plan (Approved) v1.0 - 19.10.23
Company Name
St Clements Services
Review status
Review required
Schedule 26 - Switching Service Management 1.0
– Implemented on
Loading...
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
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
REC V3.0
Date of latest update
Type
Change
ID
R0041
Change Category
Urgent
Yes
Latest Update
_
Summary
_
Change Plan
Legal text baselined
Completed
Start:
10 Apr 2022Due:
13 May 2022Completion:
13 May 2022Final Change Report Issued
Completed
Start:
13 May 2022Due:
20 May 2022Completion:
20 May 2022Responsible Committee Decision
Completed
Start:
20 May 2022Due:
07 Jun 2022Completion:
07 Jun 2022Authority Determination (Original)
Completed
Start:
07 Jun 2022Due:
20 Jun 2022Completion:
17 Jun 2022Authority Determination (revoked and re-issued)
Completed
Start:
20 Jun 2022Due:
29 Jun 2022Completion:
29 Jun 2022Impacted Consumers
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
18 July 2022
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As a Consumer, I want to be able to successfully switch my Energy Supplier with minimal delay or hassle, so that I can start to receive the service and tariff from my chosen Energy Supplier at the earliest opportunity.
- As the Authority, I want the necessary changes made to the Retail Energy Code to introduce the obligations, processes and provisions for the new switching arrangements, to enable the successful transition to enduring governance and operational arrangements.
- As a REC Party, I want to be clear on the obligations I need to meet and the processes I need to follow post CSS go live, to ensure my organisation is ready for the introduction of the new switching arrangements.
- As a REC Service Provider, I want to be clear on the obligations, processes and service standards that I need to meet, to ensure my organisation is ready for the introduction of the new switching arrangements.
Proposed Solution Document
Document title
REC V3.0 Baselined documents
Archive
Off
Document title
REC v3.0 Baselined documents (REC Portal)
Archive
Off
Problem Statement
Changes are required to the REC, to ensure the appropriate obligations, processes and provisions are defined within the REC at CSS go-live, enabling successful transition to enduring governance and operational arrangements developed as part of Ofgem’s Switching Programme.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
beth.brown@capgemini.com
R0041 - Change Proposal Form
Letter from the Authority to the REC Code Manager - REC V3.0 Authority Change Proposal
R0041 - Change Proposal Plan v1.0 (Approved)
R0041 - Initial Assessment Report v2.0 (Approved)
R0041 - Final Change Report v3.0 (Post-Vote)
R0041 Authority Decision
Company Name
Ofgem
Review status
Review required