The energy sector is on the cusp of a major reform, and it’s one that every business should be paying attention to. Market-Wide Half-Hourly Settlement (MHHS) is set to fundamentally shift how electricity consumption is measured and accounted for across the UK.
If your business relies on standard electricity meters or hasn’t yet started using consumption data in a meaningful way, now is the time to act. Fortunately, for EMMA AI customers, the heavy lifting is already done.
What Is Market-Wide Half-Hourly Settlement (MHHS)?
MHHS is a regulatory reform that mandates all electricity meters, even for smaller businesses, to be read every half hour, enabling a far more accurate view of national electricity demand and usage.
Why does this matter? Previously, non-half-hourly meters (the kind often found in smaller sites or legacy estates) relied on estimates and averaged data for billing and settlement. This created inefficiencies across the energy market and masked real-time consumption trends.
MHHS will solve that by requiring granular, half-hourly data from every meter, effectively phasing out “dumb” meters and demanding smarter infrastructure and smarter energy management.
When Will MHHS Happen?
MHHS is already underway, with a full market transition targeted for the latter half of 2026. The rollout is being driven by Ofgem and will affect every electricity supplier and business customer in the UK. That means now is the time to review your metering setup and energy data strategy.
What This Means for Businesses
For many organisations, this will mean:
- Replacing outdated or “dumb” meters with AMR (Automatic Meter Reading) or smart-enabled alternatives.
- Ensuring every site, no matter how small, is capable of reporting consumption every 30 minutes.
- Preparing to manage large volumes of data effectively to avoid being overwhelmed or missing opportunities for savings.
The alternative? Paying for manual meter readings every month, introducing cost and complexity all to comply with a change you’ll eventually have to make anyway.
EMMA Customers Are Ahead of the Curve
By working with EMMA AI, these businesses aren’t just meeting a regulatory requirement, they’re turning it into an opportunity.
Turning Compliance into Competitive Advantage
Half-hourly data is valuable, but only if you know what to do with it. EMMA AI takes that data and translates it into actionable insight:
- Highlighting sites with abnormal usage
- Identifying avoidable energy waste
- Benchmarking performance across estates
- Supporting ESG reporting with real-time data
In short, it turns compliance into cost savings, improved performance, and better decision-making.
Ready for MHHS And Everything After
What sets EMMA apart is that it doesn’t just collect data, it makes it work for you. Our platform is already helping large multi-site businesses stay ahead of rising costs, meet environmental targets, and prepare for regulatory change. All without major capital investment or infrastructure upgrades.
As MHHS accelerates the transition to half-hourly metering across the board, now is the ideal time for businesses to get ahead. The infrastructure is coming, the question is whether you’ll just comply, or whether you’ll make it count.
