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MHHS
Market-wide Half-Hourly Settlement (MHHS) is a major industry-wide reform to how electricity usage is measured and settled.
What is Market-wide Half-Hourly Settlement?
Market-wide Half-Hourly Settlement (MHHS) is a significant regulatory change for the UK MHHS energy market, mandated by Ofgem and delivered by Elexon. It requires electricity consumption for all customers to be measured and settled using half-hourly data.
MHHS at a glance
Currently, many sites are settled using estimated or profiled data. MHHS replaces this with actual consumption data, creating a more accurate reflection of how and when electricity is used.
Large businesses have benefited from half-hourly settlement for many years. MHHS extends these proven advantages across the market, modernising settlement arrangements and supporting a smarter, more flexible energy system.
Why is MHHS being introduced?
MHHS energy reforms are designed to improve how electricity is settled across the market, ensuring MHHS electricity costs more accurately reflect how and when energy is used.