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March 24, 2026
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Trying to register with a third party to access my usage data, but struggling to enter MAC address?

  • March 24, 2026
  • 14 replies
  • 218 views

I’m trying to register with a third party to access my usage data. They ask for the MPAN (which is fine) and the MAC Address of the IHD.

I’ve entered the MAC Address from the IHD I have here, but it’s getting declined. Just tried to explain this to OVO, which resulted in me being told my IHD no longer works (it does) and I can only access my usage data using the OVO App.

Pulling my hair out with these folks at the moment. Does anyone have any suggestions?

Best answer by MikeWilliams

Hi All,

@Ben_OVO I suspect that if the necessary id, if 16 characters that it is NOT a GUID

This is an example of a random GUID generated by https://guidgenerator.com/ which as you can see in the last example below is 32 characters

  • {356df19f-5744-4d75-89ae-312ee1247f55}
  • 356df19f-5744-4d75-89ae-312ee1247f55
  • 356df19f57444d7589ae312ee1247f55

The stickers on my IHD are it’s MAC addresses which is 16 characters long (when the colons are ignored) - The following are a random MAC Address in the formats I typically see, the last being as shown on my IHD’s info screens

  • C8:DE:BE:E7:B3:DB
  • C8-DE-BE-E7-B3-DB
  • C8DE-BEE7-B3DB

On my IHD there is also an installation id which is 20 characters formatted like that below, and a different format in the IHDs info screen with dashes.

  • 1234 5678 9012 3456 7890
  • 12345-67890-12345-67890

My IHD has an info screen which shows a Hub ID (like a mac address) which is different to the IHD’s MAC address.

Edit:
Just looked at my electric meter and that has it’s own MAC address.

Hopefully this should clarify things.

/MIke

14 replies

Firedog
Super User
Super User
March 25, 2026

Which third party?
   

It was N3rgy, but seems from other replies it’s a dead end anyway.
  

Not at all. My first task every day is to get my usage data from n3rgy. This from n3rgy data - accessing smart energy data:

If any organisations¹ access your energy data through the n3rgy data services, our Consumer Portal allows you to:

  • Review which organisations you have granted access to
  • Withdraw consent for any or all the organisations listed
  • Download a copy of your smart meter data held by n3rgy.
1.  You can find further information on organisations using our services to manage your consent and access your energy at Organisations using n3rgy services

 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Ben_OVO
Community Manager
Community Manager
March 26, 2026

@MikeWilliams thanks for your input here - it’s great we can call on you for these queries.

 

@Firedog does it cost anything to sign up to these business partners? ​@ObsidianWalker looks like a good workaround if you did want to use those services.

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Firedog
Super User
Super User
March 26, 2026

@Firedog does it cost anything to sign up to these business partners? ​
  ​​​​​

The ones I mentioned are both free, which is why there may be a quid-pro-quo like having to take part in their demand-flexibility exercises (which are like OVO’s PM Flex). It can take a day or two for the permissions to be all sorted out, but I find it well worth it once the system is up and running. 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Ben_OVO
Community Manager
Community Manager
March 27, 2026

Thanks ​@Firedog that’s really helpful 👍.

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