New IHD showing high levels of usage - is this right?

Updated on 23/10/25 by Ben_OVO

Sorry for the inaccurate usage costs you’re seeing on your In-Home Display (IHD).

With a smart meter the tariff information showing on the device should match the rates showing on the ‘plan details’ page of your online account or app. If the tariff figures loaded on your device aren’t correct, it may appear that your usage costs are far higher than they should be - reach out to our Support Team to get that corrected. You can find out how to see your plan details using this guide:

It is worth bearing in mind the following: 

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

If the unit rates loaded on to your device are not accurate the daily costs shown here will not match what you are actually charged. For this reason we’d always advise checking the actual usage charges on the ‘Billing’ page of your online account or app. You can find out how to use the Usage pages using this guide:

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 tariff won't change. 

Your meter will be accurate:

The meter will clock accurately. Old meters (this does depend on how old your previous meter was) 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.

IHD user guides can be found here: