Market Wide Half Hourly Settlement is a major industry transformation programme to deliver a greener electricity grid that better reflects the way in which we generate and consume electricity.
Market Wide Half Hourly Settlement (MHHS)
More information
How does MHHS affect how I will be billed?
MHHS delivers the capability for all suppliers to offer new and innovative tariffs to their customers that reflect the time of day you are using energy based on your actual consumption per half-hour. ENGIE will communicate details of these tariffs to you as they become available.
How does MHHS affect how my energy will be settled?
Settlement processes calculate how much energy has been consumed and generated, with charges levied on suppliers when energy used and purchased doesn’t balance. Under the current system, electricity consumption is accounted for and settled based on half-hourly (HH) and non-half hourly (NHH) consumption data which is collected by NHH and HH Data Collectors.
MHHS will introduce half hourly consumption data for all electricity sites, increasing the accuracy of the settlement calculations and the overall efficiency of the market. MHHS will reduce the time taken to settle energy usage from 14 months to 4 months. The reduction in the settlement timeline is planned for July 2027.
Replace question 6 (same header)
