Key benefits of MHHS for businesses 

MHHS brings several advantages for businesses of all sizes: 

• The opportunity for more accurate charging with real-time energy consumption data, meaning businesses can be billed based on actual usage rather than estimates, reducing costs if using energy out of peak times. 
• Reduced system costs in time. With a greater exposure to actual costs, it is forecast that more users will reduce their usage during peak times meaning that overall system costs will be lower as less generation and backup will be needed at this time. 
• Lower costs through demand response. Businesses can use their energy data to shift consumption away from peak periods when electricity prices are higher, leading to cost savings. 
• A more dynamic electricity market makes better use of renewable energy sources like solar and wind, with more opportunities for businesses to use and generate renewable electricity. 

Who will be affected by the changes? 

This change applies to all electricity consumers in Great Britain with a Non-Half Hourly meter, including businesses, organisations, and households. Whether you operate a small retail outlet or a large industrial facility, MHHS will impact how your electricity usage is measured and billed. 

The MHHS programme is set to start transferring supplies in late October 2026 and will be fully implemented by May 2027. Businesses should start preparing now by reviewing their procurement strategy, checking if their meters are compatible, and exploring ways to optimise energy usage based on half-hourly data. 



How can organisations prepare? 

1. Talk with us to understand how these changes will affect your billing structure and review your current energy contract. 
2. Check if your meters are compatible with half-hourly data collection and that your metering infrastructure is fit for purpose. 
3. Consider developing a strategy that takes advantage of load shifting and demand-side flexibility. 
4. Stay informed about updates by subscribing to our newsletter for market updates. 

The shift to Market-wide Half-Hourly Settlement marks a significant step towards a smarter and more efficient energy system in the UK. It is key to the government’s plans for Clean Power and eventually, Net Zero. While the transition may require some adjustments, businesses that proactively adapt to these changes can benefit from cost savings and enhanced sustainability efforts. 

Optimised can help businesses navigate this transition, providing expert insights and tailored strategies to make the most of MHHS. Get in touch with us to learn how you can turn these regulatory changes into an opportunity for greater efficiency and cost savings. 

For more insights on energy market changes and optimisation strategies, follow our blog or contact our team today.