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Market-wide Half-Hourly Settlement (MHHS) is an industry-wide programme led by Ofgem. It changes the way electricity usage is recorded across the energy market by using actual electricity consumption data every...
Yes. Market-wide Half-Hourly Settlement (MHHS) will apply to all eligible electricity supply points across Great Britain. If you have multiple sites supplied by Corona Energy, we’ll manage the migration process...
You can find more information on: Ofgem’s MHHS programme page: https://www.ofgem.gov.uk/energy-policy-and-regulation/policy-and-regulatory-programmes/market-wide-half-hourly-settlement-mhhs Elexon’s MHHS Programme website: https://www.mhhsprogramme.co.uk/ The Retail Energy Code (REC) website: https://www.retailenergycode.co.uk/...
For most customers, there will be very little disruption. Behind the scenes, MHHS will enable the energy market to use more accurate electricity consumption data. This may provide: More accurate...
MHHS is being introduced in phases across the UK: 2025 – Central industry systems go live and migration begins 2026 – Most customers move to MHHS 2027 – Industry-wide migration...
The current process relies heavily on estimates of when electricity is used. MHHS will use more accurate consumption data to help: Improve billing accuracy across the industry Support the growth...
Yes. By improving visibility of electricity usage and supporting greater flexibility across the energy system, MHHS will help make better use of renewable energy and reduce reliance on carbon-intensive electricity...
We’re upgrading our systems, processes and data capabilities to support a smooth transition for our customers. Our focus is on: Accurate billing Clear customer communication Minimal disruption Delivering the benefits...
No. Under Market-wide Half-Hourly Settlement (MHHS), all electricity supplies will be settled using half-hourly consumption data. If you already have a smart meter or an Automatic Meter Reading (AMR) meter,...
No. A smart meter is not required for Market-wide Half-Hourly Settlement (MHHS). A smart meter can make managing your energy easier by automatically sending meter readings to us, saving you...
For most customers, there will be no additional cost associated with moving to Market-wide Half-Hourly Settlement (MHHS). If a meter exchange is required, we’ll contact you directly, explain why it’s...
...Reading (AMR) meter, who will be billed using half-hourly consumption data once their MPAN has been migrated. We’ll keep you informed throughout the process and let you know if there...
No. MHHS is a change to the way electricity usage information is recorded and processed across the energy market. It will not interrupt or affect your electricity supply....
Some customers may require a meter exchange as part of MHHS. This may apply if you have: A traditional meter connected through a Current Transformer (CT) A non-communicating meter installed...
For most customers, there will be very little change. You may notice some updates to the information displayed on your bill following your move to MHHS. Your contract, payment arrangements...
No. Your existing contract will remain unchanged. However, MHHS will enable suppliers across the industry to develop new tariff options in the future, such as tariffs that offer different pricing...
Your electricity usage data will be handled securely and in line with all relevant data protection requirements. It will only be used for activities required to manage your electricity supply,...
No immediate action is required. Closer to your migration date, we’ll ask you to provide a meter reading. This will help ensure a smooth and accurate transition to MHHS. You...
You can still take part in MHHS without a smart meter. A smart meter can make managing your energy easier by automatically sending meter readings to us, saving you time...