Non-Systems Integration Testing (SIT) Suppliers & Agents in Wave 1 have started Qualification Testing (QT) 

At the Qualification Advisory Group (QAG) meeting on Thursday 21 August 2025, the Senior Responsible Owner (SRO) approved T2-QU-1100: Qualification Testing Wave Readiness Confirmed and T3-QU-0028: Qualification Wave 1 QT Execution Start. 
 
Most Wave 1 participants have successfully completed the necessary activities and have now started Qualification Testing. Reaching the start of Qualification Testing execution represents a significant milestone in our journey towards Market-wide Half-Hourly Settlement and is the result of a huge amount of work and effort from the Code Bodies, Programme and participant teams.
  
There are a couple of participants who are finalising their readiness activities. The Code Bodies are working closely with these participants to resolve any issues and ensure that they are on track to begin QT in the coming weeks.