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XRN 5454
Supplier of Last Resort (SoLR) Reporting Suite CP

Last Updated
30 Apr 2024
Release Type
Implementation Date
Proposer EDF Impacted DSC service area

Customer Change Team Leader


*Since this change was raised the scope of services available under the Retail Energy Code (REC) has matured and become clearer. Versions of the reports that this change was raised to design and implement are available under the REC, from the Central Switching Service (CSS) or the Gas Enquiry Service (GES). As such this change has now been withdrawn. 30-04-2024*


This change seeks to define [a suite] of reports that a prospective/appointed SoLR may expect to obtain to support their bidding process and, subsequently, during the period immediately following the notice of their appointment, having been issued to the CDSP by Ofgem and until every registration has transferred from the failed Supplier (either to the SoLR or to another Supplier).

It is expected that this service will be an enduring service and will form part of the Gas Enquiry Service following implementation of CSS.

[These reports may be subject to Third Party Service charges under the DSC.]

The change will initially scope but will not be limited to the following reports:

  • Review of, with potential to revise, data items within the Pre-SoLR appointment report. Initial review will be with Ofgem and Suppliers (this report is currently issued to Ofgem, upon their request, and issued to Suppliers in support of the SoLR bidding process)
  • Post-SoLR appointment
    • Daily Progress Report (incl switching, withdrawal status, Incoming Supplier ID)
    • Weekly Portfolio Report
  • Historical Data (Failing Supplier)

The final scope of reporting will be proposed to Change Managers and covered in a Solution Change Pack.

Any required data permissions will be identified during the Capture process.

Some of the reporting due to be scoped as part of this change, will significantly support the nomination process and therefore Modification 0788 – Minimising the market impacts of ‘Supplier Undertaking’ operation.

Impacted Customer Types

  • Shipper


Document title Comment Last updated CHMC outcome
Change Proposal N/A 30/12/2021 Approved at ChMC on 12/01/2022
Initial Review Stage not used N/A N/A
DSG Discussions N/A 02/02/2022 N/A
High Level Solution Options Stage not yet reached N/A N/A
Solution Review Stage not yet reached N/A N/A
Detailed Design Stage not yet reached N/A N/A
Evaluation Quotation Reports (EQR) Stage not yet reached N/A N/A
Business Evaluation Reports (BER) Stage not yet reached N/A N/A
Change Completion Reports (CCR) Stage not yet reached N/A N/A


Initial Review
Change Proposal Raised 30/12/21
Status Awaiting Approval at ChMC
Approved to Capture 12/01/22
Status ChMC approved into Capture
Solution Consultation
Expected: 00/00/00
Status Awaiting
Awaiting Delivery
Expected: 00/00/00
Status Awaiting
In Delivery
Expected: 00/00/00
Status Awaiting
Expected: 00/00/00
Status Awaiting

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