Data Cleanse Plan
The Data Cleanse Plan set out the data improvement activities that Programme participants needed to undertake, to ensure that data is of the required quality and completeness before the cutover to the new arrangements at Milestone 10 (M10) and the start of migration at M11.
You can view the Data Cleanse Plan below:
Data Cleanse Plan Closure Report
The activities set out within the Programme Data Cleanse Plan are now complete. For a summary of the activities that were undertaken, the Programme has published the Data Cleanse Closure Report, which you can view below:
MHHS Programme Data Cleanse Closure Report
The report includes the following key information:
- Meter Point Administration Number (MPAN) Migration Exclusion List, detailing:
- MPANs with attributes that cannot currently be migrated
- Remedial actions required for each MPAN before Migration
- Guidance for Suppliers to ensure that excluded MPANs are appropriately managed within Migration planning and not migrated in error
- Final reporting figures for each of the data cleanse categories
- Observations and recommendations for Code Bodies and Market participants regarding potential future performance assurance monitoring and/or additional data cleansing initiatives
- Industry Change, via Retail Energy Code (REC) or Balancing & Settlement Code (BSC), required to resolve design issues which must be implemented before those MPANs, which are impacted, are migrated
The report was discussed at the Data Cleanse Working Group (DCWG) and written in conjunction with the Code Bodies. The Programme walked through the published version at the DCWG on Thursday 30 October 2025, where the DCWG was formally closed.
If you have any questions on anything Data Cleanse related, please email the Operational Readiness team at OpReadiness@mhhsprogramme.co.uk
