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Rank 1
January 12, 2018
Solved

High usage costs shown on my new smart meter In Home Display (IHD) - Are my prices correct?

  • January 12, 2018
  • 48 replies
  • 39429 views

I had new smart meters fitted yesterday afternoon. Rather shocked to see my costs at over £5 for half a day by the time I went to bed!!! Most of it was Gas usage (>£3) and it wasn't even a cold day. According to my Nest thermostat, the boiler was only running approx 1.5 hours since the meter was fitted. How can 1.5 hrs heating equate to £3 usage ? Boiler (not combi) is rated 24 kW max and tariff shows 4p/kW (which is wrong - should be 2.68p). My basic maths suggests this should be 1.5 hrs * 24 kW * £ 0.04 = £ 1.44 + 27p standing charge. That assumes boiler runs at full tilt the whole time which is not correct as I hear it modulate down after a few minutes.

This doesn't seem right to me. Even if/when the tariff is corrected it seems too high.
How can I get the tariff set to the one I'm actually signed up to? How likely is it I've got a duff meter that is reading too high on gas?

Best answer by Tim_OVO

Updated on 09/10/25 by Ben_OVO

 

Sorry for the inaccurate unit rates you’re seeing on your In-Home Display (IHD). Sometimes it can take up to 6 weeks for your smart meter to complete the initialising process, which could mean that the information displayed your device might not be accurate to begin with.

 

Once it’s fully set-up the tariff information showing on the device should match the rates showing on your online account or OVO app (see the guide below).

 

 

If it’s been over 6 weeks since your smart meter was installed and things still don’t line up - reach out to our Support Team who can make sure the rates on your IHD are corrected. In the meantime it’s worth bearing in mind:

 

Usage costs on your IHD may not 100% match your daily charges

 

If the unit rates loaded on to your device aren’t accurate, the daily costs shown here won’t match what you’re actually charged. For this reason we’d always advise checking the actual usage charges on your bills, which can be downloaded via your online account or OVO app. You can also check the ‘Usage’ section of the online account / app, which gives you a more detailed breakdown of your usage than your IHD does.

 

 

No increase in costs due to a smart meter


Having a smart meter installed won't directly increase your costs. There are no hidden effects on usage, and your unit rates and standing charges won't change. 

 

Your meter will be accurate

 

The meter will clock accurately. Old meters can slow down, or even speed up meaning they're not measuring your energy usage correctly. We'd only expect to see this with very old meters. A brand new meter, smart or otherwise, will clock what you're using accurately.

 

OVO member but not got a smart meter yet? - Book today!

Not in communication with your smart meter? Fill out this Online Form 

Interested but not yet an OVO member? - Check out our plans!

48 replies

Rank 3
January 8, 2023

Hello all,

Since the new year I've noticed that my daily readings on my smart meter have virtually tripled, I've not a huge hob on or bought some device that uses gas and electric so what could it be?

Thanks 

 

BPLightlog
Super User
Super User
January 9, 2023

Which readings @CinderKona ? Electric, Gas, both? Can you see if they’re actual readings or estimated? Are you looking at your meter itself, the IHD (in home display) or on line?

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Rank 3
January 9, 2023

Thanks for replying. It is both gas and electric and I'm looking at the IHD. It just seems a remarkably huge jump.

BPLightlog
Super User
Super User
January 9, 2023

Ok - the rates on the IHD are not always correct. You should check your readings on your actual meters and either on your account online or on the app. 
One other thing is for some tariffs there was an increase from 1st Jan .. have a look for that too in your plan

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Rank 2
February 27, 2023

My IHD keeps jumping to very high usage intermittently (every few seconds) even when I have turned everything except my router and the IHD off. Is this a malfunction.

Blastoise186
Super User
Super User
February 27, 2023

Hey @Susanfl17 ,

That’s interesting. Could you show us photos please?

Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
Rank 2
February 27, 2023

Have sent you a video of the display

 

Rank 2
February 27, 2023

 

BPLightlog
Super User
Super User
February 27, 2023

Just wondering if your IHD is not receiving details correctly @Susanfl17 . What about your meter readings? Do you have 30min readings available and does any of your energy usage match?

It’s the meter readings that make up your bill of course rather than the IHD

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Rank 2
February 28, 2023

Thanks will definitely be checking hopefully you are right.