Kestrel
The Migration Planning and Management Tool (MPMT), also known as Kestrel, is built around a role-based framework to support the planning, management, and reporting of MHHS migration data. The tool ensures that all market participants can access the planning functionality and insights they need whilst safeguarding commercially sensitive information.
You can access the Kestrel tool via the link below, which opens in a new window:
The MHHS Programme has published a guidance document to support participants in navigating Kestrel, which you can view below:
Kestrel Supplier Submission Quick Start Guide
The Kestrel Supplier Submission Validation Rules Guide provides information on the current Validation Rules.
You can view this below:
Kestrel Supplier Submission Validation Rules
The Kestrel Submission 2 Weekly Aggregate split by Retail and Industrial & Commercial (I&C) summarises the Submission 2 Schedule split between Retail and I&C at an Meter Point Identifier (MPID) level. Please note this is a notional split based on the Supplier MPID being either Retail or I and C. You can view this document via the link below:
Kestrel Submission 2 Weekly Aggregate Submission Volume Retail I&C Split
If you have any questions or you need further assistance, please email the Kestrel team at Kestrel@mhhsprogramme.co.uk
Kestrel Production Environment Go-Live Plan
As we approach Go-Live, we are setting up the production environments. Below you can find information on the plan.
Kestrel is out Test and Dress Rehearsal Environment. You can view Kestrel below:
- Wednesday 10 September 2025 - Kestrel site enters maintenance mode (and will be unavailable as Dress Rehearsal has successfully completed)
- Wednesday 10 September - Monday 15 September 2025 - Production Setup
- Reset with Submission 2 data (removing Dress Rehearsal data)
- Configure Sprint 0 - Load Data
- Electricity Enquire Service (EES) - Snapshot 30th August 2025
- Industry Standard Data (ISD) - Published 11th September 2025 Full Version 12
- Master data updates - Pending Supplier profile data
- Deploy improvements from Dress Rehearsal feedback.
- Generate submission templates for Sprint 0
- Monday 15 September 2025 - Early Access (M11 Qualified Suppliers)
- Verify ELS volumes and Phase 3 peak capacity
- Test combined template submissions for Sprint 0 especially daily granularity validations.
- Monday 29 September 2025 - Full Industry access
- All participants can access Production
- Wednesday 1 October 2025 - Envelopes issued
- Wednesday 8 October 2025 (end of day) - Submission Deadline: All Suppliers must submit plans
- Wednesday 15 October 2025 - Sprint 0 baseline published
- Baselined - Committed and forecast schedule released to Supplier
- Baselined - Aggregate schedules released
- Detailed Schedule of Events shared for Wednesday 22 October 2025
- Wednesday 22 October 2025 - Sprint 0 Execution starts
- ELS Phase 1 starts
- Supplier migration begins following committed schedule
If you have any questions, please email the Migration team at Migration@mhhsprogramme.co.uk
Migration Planning Activity
For information on the upcoming Migration Planning activity and the timeline of future Migration Control Centre (MCC) Sprint Cycle dates, please see the MCC Sprint Cycle Dates document below:
Migration Sprint Cycle Dates
If you have any questions, please email the Migration team at Migration@mhhsprogramme.co.uk
Kestrel Webinar
The Migration team hosted a webinar on 23 April 2025, focused on upskilling Suppliers around the Kestrel tool and how it should be used to support Migration planning activities.
You can view the slides and recording for this session on the MHHS Webinars & Open Days page of this website.
If you have any questions, please email the Migration team at Migration@mhhsprogramme.co.uk
Where can I find more information?
For more information about the Supplier Submission round, please visit the Migration Supplier Envelope & Plan Submission Round 2 page of this website.
For more information about Kestrel Dress Rehearsal 2, please visit the Kestrel Dress Rehearsal 2 page of this website.
