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UMS Metering Systems (P434)

Half-Hourly Settlement for Unmetered (UMS) Supplies (P434) is an industry modification that requires all Non-Half-Hourly (NHH) MPANs to be Half-Hourly (HH) settled via a Change of Measurement Class (CoMC), by the mandated Completion Date of 31st March 2025.

Additionally, by 1st April 2025, all NHH UMS MPANs must be removed from the industry. This modification is a pre-cursor for the Market-wide Half-Hourly Settlement programme.

There are two main reasons for P434. The first, is to provide greater accuracy in Settlement & Billing for customers. The second, is to help support the nation in its Net Zero ambition. For our customers, this modification will:

  • Provide more accurate bills due to the increased nature of reads.
  • Provides less invoices due to NHH consolidation into HH.
  • Improve our customers portfolio awareness.

If you are an impacted customer, to proceed with this modification, what you need to do first is to understand your current NHH portfolio (how many NHH meters you have). Once you have assessed your portfolio, please decide on how you wish to progress.

There are 4 ways to proceed with this modification:

  1.  Match all Non-Half Hourly Supplies with a new Half-Hourly UMS MPAN
  2.  Merge groups of Non Half-Hourly UMS into 1 or more Half-Hourly MPAN(s) 
  3.  Move all Non Half-Hourly supplies volume into current Half-Hourly UMS MPAN
  4.  Move all Non Half-Hourly supplies volume into NEW Half-Hourly UMS MPAN

 

Once you have decided on how you wish to proceed, please submit a webform to advise us on how to initiate this change on your behalf.

If you require further assistance, we advise having a conversation with your Broker on how to best to setup your portfolio. If you do not use a Broker, please get in contact with TotalEnergies Gas & Power Sales to discuss further.

Please note that if you decide to take no action, TotalEnergies Gas & Power LTD will move your NHH meter to a HH meter (as per option 1). We don't wish to do this as we could setup your portfolio in a way that does not match your expectations and once these changes are made, the can't be backdated.

FAQs

The P434 modification window opens on April 2024 and runs through till March 2025. Once you have confirmed how best to proceed, we will advise you on when your specific modification will take place.

As a customer, your account number will change in line with the changes to your meter. We also anticipate that your rates will change. Each rate change will be communicated via your Broker when proceeding with the upgrade to Half-Hourly.

If you are unsure on how to proceed, we advise getting in touch with your Broker to discuss the best way of setting up your portfolio. If you do not use a Broker, please get in contact with TotalEnergies Gas & Power Sales to discuss the next steps for this modification.

Please not that if you decide to take no action, TotalEnergies Gas & Power LTD will move your NHH meter to a HH meter (as per option 1).