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Market-Wide Half-Hourly Settlement (MHHS): Delayed

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The rollout of Market-Wide Half-Hourly Settlement (MHHS) has been pushed back to October 2025, providing businesses and industry stakeholders with additional time to prepare for this transformative change. MHHS is set to modernise the UK energy market by introducing half-hourly electricity settlements, leveraging specific data from smart meters to encourage energy efficiency, cost savings, and a more flexible grid.
 
This extension offers a valuable opportunity for businesses to evaluate their energy strategies and ensure they are ready to benefit from the new system.

What Is MHHS?

MHHS is a program initiated by Ofgem to transition the UK’s energy market to a system where electricity usage is measured and billed in half-hour intervals. Traditionally, energy consumption data has been aggregated over longer periods, leading to less accurate billing and limited incentives for users to shift their energy usage patterns.
 
By harnessing detailed data provided by smart meters, MHHS aims to create a more dynamic and responsive energy market. This approach allows for more accurate billing and encourages businesses and consumers to adjust their energy usage to off-peak times, reducing strain on the grid during peak demand periods. It also supports the wider adoption of renewable energy by promoting flexibility in energy consumption.
Electricity transmission towers with glowing wires against the starry sky representing MHHS

Why Has The MHHS Deadline Been Delayed?

The new deadline of October 2025 reflects adjustments made to the program timeline to address several challenges. One of the primary reasons for the delay has been the complexity of implementing such a significant overhaul of the energy market.
 
Feedback from industry stakeholders revealed concerns about meeting the original timeline, particularly given the technical, operational, and resource demands required for a successful rollout. Ofgem has responded by revising key milestones to ensure that all participants in the energy market, from suppliers to consumers, are adequately prepared for the transition.

What Does The MHHS Delay Mean For Businesses?

For businesses, the delay is both a chance to prepare and a reminder to act. Key considerations include:

  • Preparation Time:

    Organisations now have more time to review their energy strategies, upgrade systems, and align their processes with MHHS requirements.

  • Technology Upgrades:

    The extended timeline provides an ideal opportunity to invest in smart metering and advanced energy management technologies, such as IoT solutions, which can improve efficiency and provide real-time insights into energy usage.

  • Potential Benefits:

    When MHHS is implemented, businesses will have greater control over their energy consumption. By shifting usage to cheaper, off-peak periods, they can lower costs and reduce their carbon footprint, contributing to sustainability goals.

Next Steps

Although the deadline has been extended, businesses are encouraged to take a proactive approach to ensure they are ready for the transition. Planning ahead will not only ensure compliance but also position organisations to maximise the benefits of MHHS, including cost savings and improved energy efficiency.
 
For tailored support, including energy monitoring, compliance guidance, and renewable energy solutions, contact BP Consulting. Our expertise can help you navigate the changes and make the most of the opportunities MHHS presents.
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