Market-Wide Half-Hourly Settlement: A Hidden Risk for Multi-Academy Trusts
Why MATs should be reviewing their metering estate now, before compliance costs and data challenges begin to escalate
The education sector is no stranger to regulatory change, but few upcoming reforms have the potential to impact school estates quite as significantly as Market-Wide Half-Hourly Settlement (MHHS).
While the acronym may sound like another technical adjustment within the energy industry, its implications for Multi-Academy Trusts are far-reaching. By 2027, every electricity meter in Great Britain will be required to provide half-hourly consumption data, fundamentally changing how energy usage is measured, reported and settled across the market.
For many trusts, this will happen largely in the background. For others, it could expose a series of hidden costs, operational challenges and compliance risks that have remained largely unnoticed until now.
The issue begins with the metering estate itself. Across the country, many schools continue to operate with a mixture of metering technologies, some of which were installed decades ago. While these legacy meters have served their purpose, many are incapable of providing the level of consumption data required under the new settlement arrangements.
Where this occurs, suppliers often have little choice but to arrange manual interventions to obtain the data they need. The associated costs can be substantial, with charges for site visits and manual meter readings quickly accumulating across large estates. What may appear insignificant at a single academy can become a material budget pressure when multiplied across dozens of sites.
Perhaps more concerning is that these costs are not always obvious. Many trusts only become aware of them once they appear within supplier invoices, making them difficult to forecast, budget for or challenge. In an environment where every pound is under scrutiny, unexpected energy-related expenditure is rarely welcome.
However, the financial implications are only part of the story.
Data Quality is Becoming a Governance Issue
As schools and trusts become increasingly reliant on data to support decision-making, the quality and integrity of that information matter more than ever.
Energy consumption data now underpins a growing number of strategic activities, from carbon reporting and Net Zero planning through to estate investment decisions and regulatory compliance. Increasingly, boards, auditors and external stakeholders expect that information to be accurate, consistent and readily available.
The transition to MHHS will inevitably involve meter replacements, changes in data collection arrangements and new reporting processes. Without appropriate oversight, trusts risk creating gaps in historical records, inconsistencies between sites and challenges in maintaining accurate baselines.
These issues can prove particularly problematic where trusts are reporting against carbon reduction targets or preparing for wider sustainability reporting requirements. Retrospectively correcting missing or inconsistent data across multiple academies is rarely straightforward and can become both costly and time-consuming.
For MAT leaders, this is no longer simply an operational concern. It is increasingly a governance consideration.
Turning Compliance into Opportunity
Despite the challenges, MHHS should not be viewed solely as a compliance exercise. For trusts that prepare effectively, the transition presents a significant opportunity to strengthen estate intelligence and improve decision-making.
Access to accurate half-hourly data provides a far clearer understanding of how buildings perform, where energy is being consumed and which sites represent the greatest opportunity for improvement. It enables meaningful comparisons across portfolios and provides stronger evidence to support investment decisions, whether focused on energy efficiency, decarbonisation or wider estate rationalisation.
In short, better data leads to better decisions. The key is ensuring that metering arrangements are designed around the needs of the trust rather than the convenience of the supplier.
Many organisations are now reviewing the benefits of establishing direct Meter Operator (MOP) arrangements, providing greater visibility, control and accountability across their portfolios. Taking ownership of these relationships can help avoid unnecessary charges, improve data quality and ensure estates are fully prepared for future settlement requirements.
Just as importantly, it places trusts in a stronger position to manage compliance obligations and future reporting requirements with confidence.
Acting Before the Deadline
One of the lessons repeatedly seen across the education sector is that reactive responses to regulatory change are almost always more expensive than proactive ones.
With MHHS implementation continuing to gather pace and wider sustainability obligations increasing, now is the right time for trusts to review their metering infrastructure, assess data quality and understand where potential risks may exist.
Those that act early will have greater control over costs, greater confidence in their data and greater flexibility in how they manage future change. Those that leave it until suppliers begin making decisions on their behalf may find themselves facing avoidable costs and unnecessary disruption.
Market-Wide Half-Hourly Settlement may appear to be a technical change, but its implications are strategic. For Multi-Academy Trusts seeking to balance financial sustainability, compliance and long-term estate performance, it is a development that deserves attention now rather than later.
Guest Author: Jac Civill
Jac Civill is Senior Net Zero & Procurement Relationship Manager at BCR Associates. Working extensively with schools, trusts and public sector organisations, Jac helps clients navigate energy procurement, compliance obligations and Net Zero planning. His work focuses on identifying risk, improving efficiency and ensuring organisations have the information and contractual arrangements required to make informed long-term decisions about their estates and energy use.
