Preparing consumers and suppliers for Market-wide Half-Hourly Settlement
SMS delivers the full infrastructure and support required for Market-wide Half-Hourly Settlement – from metering upgrades to data services and analytics. With in-house teams and integrated systems, we make the transition to MHHS straightforward for both suppliers and consumers.
What is Market-Wide Half-Hourly Settlement (MHHS)?
Market-Wide Half-Hourly Settlement (MHHS) is a major energy reform that will require all electricity to be settled using actual half-hourly consumption data by May 2027. By replacing estimated data with real usage, MHHS enables more accurate billing, flexible pricing, and a clearer view of when and how electricity is used.
MHHS affects all industry participants by introducing new data, infrastructure and compliance requirements. For consumers, it opens the door to smarter energy management and cost savings.
What you need to know
Migration starts October 2025
All metered and unmetered supplies will begin transitioning to half-hourly settlement. The final implementation deadline is May 2027.
Changes to energy settlement
Whether you’re a supplier, a commercial energy user or a domestic customer, MHHS changes how your energy usage is measured and settled.
Prepare now with SMS
Early preparation means smoother rollout, more accurate data, and better results for billing, planning, and carbon reduction.
Successful MHHS delivery depends on coordination across the industry. Our role is to take the weight off suppliers and end-users by providing a seamless, secure service – ensuring the transition is as smooth as possible for everyone involved.
