Current PPIRs
You can view all open Programme Participant Information Requests (PPIRs) on this page.
You can view all previous PPIRs on the Previous PPIRs page of this website.
For more information on PPIRs, please email PPC@mhhsprogramme.co.uk
Non-Systems Integration Testing (SIT) Supplier & Agent Post-Qualification Testing (QT) Sandbox
You should be aware of this request if you are a Non-SIT Supplier or Agent.
Elexon's Non-SIT Qualification Testing team have issued a Post-Qualification Testing (QT) Sandbox Programme Participant Information Request (PPIR) for all Non-SIT Suppliers and Agents to complete.
Please note that this PPIR was first issued on 30 October 2025 with a deadline of 14 November 2025, but we have extended the deadline to 17:00 on Friday 21 November 2025 to allow more time for any Non-SIT Suppliers or Agents who haven't yet responded to do so.
The purpose of this PPIR is to support the Non-SIT Qualification Testing team to assess the scope and design of the Non-SIT Supplier and Agent Sandbox Testing tools. Responses to this PPIR will be used to ensure that the Non-SIT Supplier & Agent Sandbox has the appropriate capability and scale to support necessary additional participant testing.
You can access the PPIR form via the link below:
Non-SIT Supplier & Agent Post-QT Sandbox PPIR Form
As a reminder, the Non-SIT Supplier & Agent Sandbox is provided for participants to conduct any testing beyond the minimum test set required for Qualification, in a defined period post Non-SIT QT completion, through to the current planned end date of 28 August 2026.
Please note that participants are obligated to provide a response to the PPIR under BSC Section C 12.12.1, and that participant responses should reflect theirPlacing Reliance arrangements.
Elexon's Non-SIT Qualification Testing team will collate and review the responses, assess them against their testing resource plans, and present an update on the proposed approach at the Qualification Test Execution Forum (QTEF) on Wednesday 19 November 2025 and the following Wednesday 26 November 2025. The approach will be ratified via the Qualification and End-to-End (E2E) Sandbox Working Group (QWG). To avoid delaying preparation for Sandbox Testing for Wave 1 participants, the Code Bodies will propose that an Extraordinary QWG (eQWG) is convened before the end of November 2025.
If you have any questions, please email MHHSQualification@elexon.co.uk
