P434 Assessment Procedure Consultation

This Modification will require a period of mandatory Change of Measurement Class (CoMC) activity for all Non-Half Hourly (NHH) Unmetered Supplies (UMS) Metering Systems running from October 2023 to October 2024. It will also require all new UMS connections to be settled Half Hourly (HH) from October 2023.

If the transition for NHH UMS Metering Systems is not brought forward, combined with the workload from other MHHS activities, It will significantly increase the risk that there will be insufficient time for Customers, Suppliers and UMSOs to address any issues that may arise with the transition to the MHHS Target Operating Model.