Changes to Supply Number Format for MHHS (Alternative)
Date of latest update
Type
Change
ID
R0083A
Priority
Urgent
No
Latest Update
17/11/2023 - The Authority has rejected R0083A, but has approved R0083 for implementation on MHHS M8 *This Change Proposal is a consequential change from the Market-wide Half Hourly Settlement programme
Summary
The Electricity Supply License requires Suppliers to provide the Supply Number to each Consumer on every bill, or at least once per year where no bill has been sent. The Supply Number format is prescribed by the REC and is detailed in the Energy Market Data Specification. The MHHS design is changing the data associated with each individual metering point, including those data items currently displayed within the Supply Number top line. This is an Alternative Change Proposal to R0083, which proposes to replace the format of the top line in the Supply Number Format. This Change Proposal proposes to remove the top line completely from the S Number format. Both solutions are being progressed together to allow for a clear assessment of the benefits and drawbacks and impacts to consumers.
Original CP
Impacted Consumers
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 an electricity Consumer I want to be able to provide my prospective Energy Supplier with the necessary information for them to provide a suitable tariff. As a Non-Domestic Consumer, I want to have the necessary information that will allow me to access tariff information, specific to my business, to help me manage my energy. As an electricity Consumer, I want to have access to the data that will help me appoint my own Metering Equipment Manager (MEM) where permitted.
- As a Supplier, I want to know how to populate and format the Supply Number, so that I can meet my obligations to include it in Consumer bills or statements. As a Third Party Intermediary (TPI), I want Consumers to be able to provide me with the right information to provide appropriate quotes.
- As an independent Distribution Network Operator, I want to be able to identify and use the DUoS Tariff Id so that I can provide transparency on charging that is being applied to my customers. As the Electricity Enquiry Service (EES) Provider, I want to know how to populate the Supply Number so that I can make it available on the EES
Problem Statement
The Market-wide Half Hourly Settlement design is impacting the Data Items that are used in the top line of the Supply Number, which Energy Suppliers are obliged to provide to Consumers at least once a year under their Licence. A revised definition of the Supply Number format is required so that Electricity Suppliers have a clear understanding of the approach to populating the Supply Number for metering points that have migrated to the new MHHS arrangements.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0083A - Change Proposal Form 05.12.2022
Decision to Reject Change Proposal R0083A - Change to Supply Number Format Alternate
Company Name
-
Review status
Review required
Changes to Supply Number Format for MHHS
Date of latest update
Type
Change
ID
R0083
Change Category
Priority
Urgent
No
Latest Update
22/09/25 - This Change Proposal has been implemented as part of the MHHS M8 22 September 2025 REC Release.
Summary
The Electricity Supply License requires Suppliers to provide the Supply Number to each Consumer on every bill, or at least once per year where no bill has been sent. The Supply Number format is prescribed by the REC and is detailed in the Energy Market Data Specification. The MHHS design is changing the data associated with each individual metering point, including those data items currently displayed within the Supply Number top line. To support Electricity Supplier implementation of the MHHS arrangements, a clearly defined solution is required setting out a revised approach to populating the Supply Number on Consumer’s bills and statements.
Change Plan
Solution development completed
Completed
Start:
05 Dec 2022Due:
31 Mar 2023Completion:
31 Mar 2023Party Impact Assessment issued
Completed
Start:
31 Mar 2023Due:
06 Apr 2023Completion:
06 Apr 2023Party Impact Assessment closed
Completed
Start:
06 Apr 2023Due:
02 May 2023Completion:
02 May 2023Preliminary Change Report issued
Completed
Start:
02 May 2023Due:
25 May 2023Completion:
26 May 2023REC Change Panel review of PCR
Completed
Start:
25 May 2023Due:
06 Jun 2023Completion:
06 Jun 2023Consultation issued
Completed
Start:
06 Jun 2023Due:
09 Jun 2023Completion:
09 Jun 2023Consultation closed
Completed
Start:
09 Jun 2023Due:
30 Jun 2023Completion:
30 Jun 2023Final Change Report issued
Completed
Start:
30 Jun 2023Due:
21 Jul 2023Completion:
20 Jul 2023REC Change Panel decision
Completed
Start:
21 Jul 2023Due:
01 Aug 2023Completion:
01 Aug 2023Authority Determination requested
Completed
Start:
01 Aug 2023Due:
03 Aug 2023Completion:
02 Aug 2023Alternative Change Proposals
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 an electricity Consumer I want to be able to provide my prospective Energy Supplier with the necessary information for them to provide a suitable tariff. As a Non-Domestic Consumer, I want to have the necessary information that will allow me to access tariff information, specific to my business, to help me manage my energy. As an electricity Consumer, I want to have access to the data that will help me appoint my own Metering Equipment Manager (MEM) where permitted.
- As a Supplier, I want to know how to populate and format the Supply Number, so that I can meet my obligations to include it in Consumer bills or statements. As a Third Party Intermediary (TPI), I want Consumers to be able to provide me with the right information to provide appropriate quotes.
- As an independent Distribution Network Operator, I want to be able to identify and use the DUoS Tariff Id so that I can provide transparency on charging that is being applied to my customers. As the Electricity Enquiry Service (EES) Provider, I want to know how to populate the Supply Number so that I can make it available on the EES
Proposed Solution Document
Document title
Approved Solution for R0083 v1.0 26.05.2023
Archive
Off
Document title
Approved Legal Text R0083 Supply Number Format redlining v2.0
Archive
Off
Document title
R0083 - Guidance for Supply Number population v2.0
Archive
Off
Document title
All Solution documents and legal text 06.06.2023 (For PCR)
Archive
Off
Document title
Proposed Solution for R0083 v1.0 26.05.2023 (For PCR)
Archive
Off
Document title
Legal text - Option 1 (R0083) Supply Number Format redlining v2.0 26.05.2023 (For PCR)
Archive
Off
Document title
Proposed Solution for R0083A v2.0 06.06.2023 (For PCR)
Archive
Off
Document title
Legal text - Option 3 (R0083A) Supply Number Format redlining v1.0 26.05.2023 (For PCR)
Archive
Off
Document title
R0083 and R0083A Solution Options Draft Legal Text (IA) 06.04.2023
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Off
Document title
R0083 and 83A - Solution Options v1.0 (Impact Assessment) 06.04.2023
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Off
Problem Statement
The Market-wide Half Hourly Settlement design is impacting the Data Items that are used in the top line of the Supply Number, which Energy Suppliers are obliged to provide to Consumers at least once a year under their Licence. A revised definition of the Supply Number format is required so that Electricity Suppliers have a clear understanding of the approach to populating the Supply Number for metering points that have migrated to the new MHHS arrangements.
Stages Selection
SME
SME Role
Lead Technical Analyst
MHHS Supply Number Consultation Response Summary Anon 08.11.2022
MHHS Supply Number Consultation 14.10.22
R0083 - Change Proposal Form
R0083 and R0083A Initial Assessment Report v2.0 (Approved) 22.02.2023
R0083 and 83A Change Proposal Plan v2.0 (Approved) 22.02.2023
R0083 and 83A Consolidated Party Impact Assessment Responses v2.0 PUBLIC 07.06.2023
R0083 and R0083A Preliminary Change Report v1.0 (Pre-Approval) 26.05.2023
R0083 and R0083A Preliminary Change Report v2.0 (Approved) 07.06.2023
R0083 and R0083A Consolidated Consultation Responses v1.0 PUBLIC 20.07.2023
R0083 and R0083A Final Change Report v2.0 (Post-Vote) 02.08.2023
Decision to approve REC Change Proposal R0083 Changes to Supply Number Format
Company Name
-
Review status
Review required
Formalising the Submission of PPMIP Unallocated Transaction Report (UTR) Files
Date of latest update
Type
Change
ID
R0082
Change Category
Change Path
Priority
Urgent
No
Latest Update
09/04/2024 - Due to the MHHS impact on Service Providers, the technical code freeze and any MHHS impacts on the proposed solution, the Code Manager has reconsidered the priority of R0082 and believes that should be progressed following MHHS go-live. This Change Proposal has been withdrawn, and the Code Manager will consider raising a new change at the appropriate time following MHHS with consideration of the Codes Roadmap.
Summary
This CP seeks to address the following issues regarding the Unallocated Transaction Report (UTR) files provided by PPMIPs to the Code Manager each month: 1. There is no REC requirement for PPMIPs to submit a monthly file to the Code Manager 2. PPMIPs are currently submitting files in two different file formats 3. C&C is only able to load one of the two file formats The CP has been raised to introduce a requirement in the REC for PPMIPs to provide monthly Unallocated Transaction Report (UTR) files to the Code Manager in a single file format, set out in the REC Data Specification. With this format being one that can be loaded by C&C.
Change Plan
Solution analysis and development
Completed
Start:
28 Nov 2022Due:
12 Jan 2024Completion:
11 Jan 2024Service Provider Impact Assessment start date
Completed
Start:
12 Jan 2024Due:
15 Jan 2024Completion:
15 Jan 2024Service Provider Impact Assessment close
Completed
Start:
15 Jan 2024Due:
11 Mar 2024Completion:
11 Mar 2024Impacted 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 PPMIP, I want to have clear guidance on how and when I should submit my Unallocated Transaction Report files.
- As a Supplier, I want to receive accurate Unallocated Transactions in relation to prepayment meters that are not smart meters.
- As the Code Manager, I want visibility of the Unallocated Transaction Report.
- As the EES Provider, I want to be able to efficiently upload the Unallocated Transaction Reports.
Problem Statement
PPMIPs aren’t submitting UTR files in the same format, and one of these formats cannot be loaded by the EES Provider. There is also no obligation in the REC for these reports to be provided.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
rosalind.timperley
R0082 - Change Proposal Form
R0082 - Change Proposal Plan (Approved) 17.10.2023
R0082 Initial Assessment Report (Approved) 17.10.2023
Company Name
REC Code Manager
Review status
Review required
Addition of Previous MEM to the EES API
Date of latest update
Type
Change
ID
R0079
Change Category
Change Path
Priority
Urgent
No
Latest Update
14/05/2024 - As this Change Proposal is affected by the MHHS Code Freeze, the Proposer has withdrawn this CP and may reraise it post M10.
Summary
This change aims to add the previously appointed MEM as a data item viewable in the EES API
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
Addition of Previous MEM to the EES API.docx
Company Name
-
Review status
Review required
EMR Settlement Limited - additional access to EES
Date of latest update
Type
Change
ID
R0078
Change Path
Priority
Urgent
No
Latest Update
29/09/23 - This change was implemented on 29 September 2023 as part of an Extraordinary REC Release
Summary
This Change proposal seeks to extend the access permitted in the Electricity Enquiry Service (EES) for Electricity Market Reform Settlement (EMRS) Limited to enable the completion of metering assessments and change of supply checks where Capacity Provider’s portfolio includes domestic Consumers.
Change Plan
SERVICE PROVIDER IMPACT ASSESSMENT ISSUED
Completed
Start:
26 Oct 2022Due:
07 Jul 2023Completion:
11 Aug 2023PRELIMINARY CHANGE REPORT AND CONSULTATION ISSUED
Completed
Start:
07 Jul 2023Due:
18 Aug 2023Completion:
18 Aug 2023FINAL CHANGE REPORT ISSUED
Completed
Start:
18 Aug 2023Due:
08 Sep 2023Completion:
08 Sep 2023RESPONSIBLE COMMITTEE DECISION
Completed
Start:
08 Sep 2023Due:
15 Sep 2023Completion:
15 Sep 2023Status
Implementation Date
29 September 2023
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As EMRS I want to have an appropriate understanding of the portfolio so that I am able to complete metering assessments and checks on Switches so that I can fulfil my role.
- As the EES Provider I want to be able to provide access to EMR Settlement Limited as set out in the Data Access Matrix.
Proposed Solution Document
Document title
R0078 - Electricity Data Access Matrix v3.3 (17.08.2023)
Archive
Off
Problem Statement
EMRS are experiencing an increasing occurrence of domestic Consumers being included in Capacity Provider portfolios. Currently they have limited availability to data on domestic Consumers, making the completion of assessments and checks difficult. Access to data held in the EES for domestic metering points will enable EMRS to complete these tasks that are required to appropriately include domestic provider contributions in the overall view of the Capacity Market.
Stages Selection
SME
SME Role
Lead Technical Analyst
R0078 Change Proposal Form
Redlined DAM (Provided by the Proposer)
R0078 Change Proposal Plan v1.0 (Approved) 18.07.2023
R0078 Initial Assessment Report v1.0 (Approved) 18.07.2023
R0078 Preliminary Change Report
R0078 - Non Confidential Consultation Responses
R0078 - Final Change Report v2.0 post vote
Company Name
-
Review status
Review required
Resolution of EES API SearchAddress method discrepancies
Date of latest update
Type
Change
ID
R0077
Urgent
No
Latest Update
22/02/2023 - Change Proposal withdrawn with the Proposers agreement
Summary
This change aims to ensure that the returned data items have uniform labels irrespective of the API search that provides the data. This will ensure that the requestor does not have to anticipate potentially different data labels for the the same data items.
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0077 - Change Proposal Form
Company Name
-
Review status
Review required
DNOs notifying Suppliers about Crossed Meters
Date of latest update
Type
Change
ID
R0076
Priority
Urgent
No
Latest Update
28/05/2024 - R0076 has been withdrawn as the issue was addressed through R0121 - SDEP Review Improvements (1) - Process Types. The adoption window is closed.
Summary
The Change seeks to introduce a way for the DNOs to raise a crossed meter issue with the Supplier, in a way that directly feeds into the Supplier’s list of crossed meter issues. The supplier will be required to feed back progress to the DNO who has raised the issue with them, this should be defined as a process within the REC.
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
R0076 - Change Proposal Form v1.0
Company Name
-
Review status
Review required
Introduction of a new Meter Asset Condition Code
Date of latest update
Type
Change
ID
R0072
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
19/09/2024 - Change Proposal R0072 has been rejected and raised to Ofgem to consider. Despite earlier acceptance, the Code Manager believes that the proposal is not relevant to the REC and cannot progress any further.
Summary
This change seeks to introduce a new Asset Condition Code where further investigation is required by a Distribution Network Operator, where is there suspected asbestos in the metal encased cut-out
Impacted Consumers
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0072 - Change Proposal Form
Company Name
Consumer
Review status
Review required
Inclusion of SMRS Data Items in EES (BSC CP1568 Consequential Change)
Date of latest update
Type
Change
ID
R0066
Change Path
Priority
Urgent
No
Latest Update
30/06/2023 - This change was implemented on 30 June 2023 as part of the June 2023 REC Release
Summary
This Change Proposal is a consequential change, to display new Balancing and Settlement Code (BSC) owned Data Items in the Electricity Enquiry Service (EES). These Data Items support the introduction of Registration Service Data Items that will be needed before Market-wide Half Hourly Settlement (MHHS) migration commences.
Change Plan
Solution Refinement
Completed
Start:
24 Aug 2022Due:
23 Sep 2022Completion:
23 Sep 2022Service Provider Impact Assessment
Completed
Start:
23 Sep 2022Due:
23 Sep 2022Completion:
23 Sep 2022Party Impact Assessment
Completed
Start:
23 Sep 2022Due:
23 Sep 2022Completion:
23 Sep 2022Preliminary Change Report Issued
Completed
Start:
23 Sep 2022Due:
04 Nov 2022Completion:
04 Nov 2022Consultation Issued
Completed
Start:
04 Nov 2022Due:
04 Nov 2022Completion:
04 Nov 2022Final Change Report Issued
Completed
Start:
04 Nov 2022Due:
09 Dec 2022Completion:
09 Dec 2022Responsible Committee Decision
Completed
Start:
09 Dec 2022Due:
20 Dec 2022Completion:
20 Dec 2022Status
Implementation Date
30 June 2023
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- As an impacted Market Participant, I want to ensure good quality underlying data is available to support the transition to HH Settlements to avoid additional time and effort being spent fixing data quality issues during the migration period.
- As the MHHS Programme, I want Registration Service Data Items to be available ahead of the MHHS migration to enable data cleanse activity to be completed to address data quality issues.
Proposed Solution Document
Document title
R0066 Solution Documents
Archive
Off
Problem Statement
There are Registration Service Data Items that are critical to the MHHS rules and processes. These need to be introduced into the existing Supplier Meter Registration Service (SMRS) system and also displayed in EES prior to the transition to Half Hourly (HH) Settlement, to facilitate MHHS Programme data cleanse activity.
Stages Selection
SME
SME Role
Lead Technical Analyst
Change Proposal Form.pdf
R0066 Change Proposal Plan v1.0 (Approved)
R0066 Initial Assessment Report V1.0 (Approved)
R0066 Consolidated Impact Assessment responses
R0066 Preliminary Change Report v1.0
R0066 Consolidated Consultation Responses
R0066 - Final Change Report v2.0 (Post Vote)
Company Name
-
Review status
Review required
Registration of Smart Export Guarantee (SEG) Sites
Date of latest update
Type
Change
ID
R0065
Priority
Urgent
No
Latest Update
23/10/23 - discussion with BSC. Issue 91 has been closed, so we are proposing to withdraw
Summary
The Smart Export Guarantee (SEG) is an obligation set by the Department for Business, Energy and Industrial Strategy (BEIS) for licensed electricity Suppliers to offer a tariff to small-scale low-carbon Generators and make payments directly for exported electricity. The SEG came into force on 1 January 2020 and introduced the need to register and settle Export Meter Point Administration Numbers (MPANs), in accordance with the Balancing and Settlement Code (BSC) arrangements, for generators with capacity up to 5 Megawatts (MW). There are a number of scenarios arising which question whether these existing processes established for the import market are fit for purpose for the export market and for the use of shared smart Meters. The REC should allow for registration of export at smaller scale generation (i.e. below 30kW) to ensure that the SEG scheme is workable and therefore the issue with MEM appointment for SEG sites needs to be investigated.
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0065 - Change Proposal Form
BSC Issue 91 Report
Company Name
-
Review status
Review required