The Clock: 3 September 2025

The Clock newsletter provides participants with updates and key information to support delivery of the MHHS Programme. The Clock will signpost you to events, plans, reports and documents to assist in planning, design, development, testing and delivery.

In this issue of The Clock we update you on:

• Programme News
  
  • NEW! All participants in Pathway 2 have been Qualified!   
  • REMINDER: Design Artefact transition now in effect! 
• Participant Checklist
  
  • REMINDER: Kestrel Dress Rehearsal 2 (DRH2) closes on Friday 5 September 2025  
  • REMINDER: Timelines for upcoming Qualification activities by Wave  
  • NEW! Kestrel Submission 2 Weekly Aggregate Submission Volume Retail Industrial & Commerical (I&C) Split  
• MHHS Transition Update
  
  • REMINDER: Milestone 10 (M10)/M11 Cutover status reports 
  • NEW! Self-declarations for Licensed Distribution System Operators (LDSOs), Retail Energy Code Company (RECCo) & Electricity Enquiry Service (EES) 
  • NEW! Data Cleanse activities  
• Upcoming events
  
  • Upcoming Governance Meetings 
  • REMINDER: Final Migration Dress Rehearsal 2 drop-in session: 3 September 2025 
  • NEW! MHHS Webinar: Migration Sprint 0: 18 September 2025 
• What happened last week?
  
  • Last week's Governance Meetings 
• Elexon & Data Integration Platform (DIP) Manager Update
  
  • REMINDER: DIP Manager Risk Operating Plan (ROP) 2025/26 Consultation  
  • NEW! Industry Standing Data (ISD) Mailbox decommissioning before MHHS Programme Milestone 10 (M10) 
  • NEW! DIP Manager drop-in session: 5 September 2025  
  • NEW! DIP Manager Open Day: 17 September 2025
  • NEW! Elexon's Industry Standing Data (ISD) Briefing: 28 August 2025  

The Clock

To sign up to The Clock, please use the 'Sign Up' button in the footer on any of the pages on the website. You will then receive the latest issue by email every Wednesday.