MP256 SEC Alignment with DCC SMETS1 MHHS Capacity Requirements

In April 2021, Ofgem concluded that Suppliers should be mandated to settle their customers on a half-hourly basis, known as Market-Wide Half Hourly Settlement (MHHS). The SEC does not set out detailed requirements on how the DCC should effectively manage the service where Smart Metering Equipment Technical Specification (SMETS)1 Service Request (SR) volumes exceed service capacity.

To minimise the impact of MHHS on S1SPs, SMETS1 WAN Providers, and the DCO, the DCC will implement a short-lived (up to 25 hours) secure data cache of the response data at the S1SP.

DCC

SEC Appendix AM 'SMETS1 Supporting Requirements'