Changes to Metering & Data Services under MHHS
What to expect from Market-wide Half-Hourly Settlement (MHHS)
MHHS Migration: What to expect
EDF is now starting to 'migrate' businesses to MHHS. This will carry on into 2027.
As part of the industry-wide 'migration', there will be updates to your metering and data services, including how services are structured and how charges are applied.
We will be in touch directly when you are migrating to let you know about any changes.
Changes may take effect at the point your supply is migrated, such as:
- Changes in how charges appear on your bill, and a more consistent pricing approach.
- If your existing service provider is MHHS compliant: Your existing contracts will stay in place.
- If your meter isn’t communicating, some additional activity may be required and we will be in touch.
Key Changes under MHHS Migration
Half-hourly data for all meters
All meters will provide half-hourly data for settlement under MHHS. Smart and Advanced meters can do this automatically.
Non-communicating meters may require manual data collection. Additional charges may apply for this activity.
Updated terminology
Same services, new industry naming for service providers, service types, and meter classification.
More on terminology changes
| Old Term | new term | |
|---|---|---|
| Service Provider | Meter Operator (MOP) | Metering Service Provider |
| Data Collector & Data Aggregator (DCDA) | Data Service Provider | |
| Service Type | HH Meter Operator [Service] (MOP) | Metering Services Advanced (MSA) |
| NHH Meter Operator [Service] (MOP) | Metering Services Smart (MSS) | |
| HH Data Collector & Data Aggregator (DCDA) | Advanced Data Services (ADS) | |
| NHH Data Collector (DC) | Smart Data Service (SDS) | |
| Meter Administrator (MA) | Unmetered Supplies Data Service (UMSDS) |
We're using MHHS to simplify charging structures
For 'Advanced' meters, that means...
We are making charges clearer and more transparent by:
- Removing complex AMR banded pricing
- Applying itemised service charges to all 'Advanced' meter types
- Aligning HH and AMR meters into one 'Advanced' category
Smart and traditional NHH (TRAD) meters will:
- Move to updated service categories e.g. Metering Service Smart (MSS)
- Continue to be charged a simplified tariff
- Be charged differently depending on meter type
- Incur potential charges if manual reads are needed (in certain circumstances)
Make sure you're MHHS-ready
For most businesses, the best way to prepare for MHHS is to upgrade any NHH meters on your sites to smart or AMR meters. Upgrading now could mean you get better benefits, sooner.
Ask your account manager to check any next steps you may need to complete, or get in touch about upgrading your business to smart metering using the links below.
Make the most of what MHHS has to offer
Explore the range of benefits available through MHHS and discover how they support your business and customers. From exclusive services and tailored solutions to expert guidance and ongoing support, MHHS benefits are designed to add real value at every stage.
Who will be my metering and data services provider post-migration?
EDF will appoint service providers on your behalf under standard (deemed) arrangements.
If your existing provider is MHHS-compliant, your existing contracts will stay in place.
Why are charges changing?
Charges are being updated to reflect the increased data requirements and operational activity under MHHS.
Will my bill look different?
Yes, terminology will change e.g. MOP is now Metering Services and you may see more itemised and transparent meter charges instead of bundled pricing.
We will be issuing two bills around migration. One up to migration to close off any previous settlements window and the second for a few days or a week or two after migration.
Even though the changes to the MHHS bills are small, we have provided a comparison between the current bills and the new MHHS bills.
What are deemed and direct contract arrangements?
If you don't have a direct contract with a Metering or Data Service Provider, we will appoint one for you and you will be charged their deemed rates.
If you want to discuss a contract with EDF please contact us at MOPSales@edfenergy.com.
What should customers do if their meter is faulty / not communicating?
They should contact their Metering Service Provider to arrange maintenance activity.
This may involve:
- Fixing communications
- Repairing or replacing equipment
- Potential additional charges depending on the issue
Stay up to date
Keep an eye out for upcoming webinars and blogs on MHHS over on our TalkPower page.
