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February 13, 2017
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Why do I get estimated readings in my bill when I have a smart meter?

  • February 13, 2017
  • 84 replies
  • 36984 views

Hi,

 

I have a smart meter why do I get estimated readings on my Bill? I thought a smart meter would know my correct readings.

 

Jonboy.

Best answer by Darran_OVO

Updated on 14/08/25 by Abby_OVO

 

Got a smart meter installed but noticed we’ve estimated your usage on your latest monthly summary? There’s a few reasons we could be using estimated readings when it comes to your bill, even if you have a smart meter.

 

It could be something as simple as not having the smart meter set up to send half hourly or daily readings. It’s worth checking your meter reading schedule with the Support Team, and get it updated if it’s set to a monthly reading. This will help prevent estimated bills as well as giving you a better view of your usage too. For more on this check out our handy topic below all about meter reading schedules:

 

 

If you know you have these set up and it’s not the issue, there’s a chance we could be experiencing communication issues with your meters.

 

The first place to check what’s going on with those smart meters is your online account or OVO app (download for Android or iOS). You’ll know something’s up if you see this message on the Homepage:

Exact wording may vary

 

This message will appear if we haven’t received a reading from your meter as expected for at least 5 days. Hopefully this is just an intermittent issue and the meters will get back in touch with us soon. In the meantime it’s worth submitting a meter reading a few days before your next monthly summary is due. 

 

To take a reading you’ll need to go to the meters themselves (this won’t be viewable on the In Home Display unfortunately).

 

For SMETS1 ‘Secure’ smart meters:

 

There’s a slight difference between the the S1 meters we installed. To take a dual (day/night) reading for Secure Liberty 110 S1 smart meters (which are designed to work best with storage heaters), press 9 on the meter’s keypad. If you’ve got a Secure Liberty 100 S1 smart meter, press 6 to confirm the Day and Night meter readings (pressing 9 will show the reading if you’re a single rate member with this meter).
 

For SMETS2 Aclara, Flonidan, Honeywell or Elster smart meters:

 

  Aclara (Elec) / Flonidan (Gas) Elster (Elec) / Honeywell (Gas)
Reading the meter
  • Elec: Press A three times until TOU Rate 1 appears.
  • Gas: Press C to wake up, then C to access the menu. Use B to scroll and C to select the reading option.
  • Elec: Press the top button once or twice
  • Gas: Press the circle button once or twice

 

You can then enter this reading by clicking ‘Send reading’ on the Homepage message or by clicking on the ‘Meter Readings’ menu option:

 

Exact appearance may vary

 

Here you’ll be able to see the last reading we received and the date this was sent to us. Unless you’ve sent a manually reading already, this will be a good indication of when your smart meter lost communication with us. Click ‘Send electricity reading’ and you’ll be taken here:

 

 

It’s worth checking the reading you’ve taken against the last reading (it shouldn’t be a lower number - unless your meter’s faulty!) You can then type today’s reading into the box or boxes (for an Economy 7 meter) provided:

 

 

Exact appearance may vary

 

Click ‘Next, send a gas reading’ to send the reading from your other meter (if this applies to you!). If you refresh your Homepage you’ll notice your balance will update to include the up-to-date usage costs. 

 

Hopefully this will be a temporary communication blip and we’ll be able to recover the communication without any further action. If it’s been a few weeks and you’re still noticing the smart meter message on your Homepage it’s worth carrying out a smart meter health check for your meter type below and forwarding the results on to our Support Team for further investigation:

 

SMETS1 Secure Smart Meter Health Check

SMETS2 Smart Meter Health Check

 

 

Fingers crossed those smart meters will be back in touch soon and you can continue enjoying all the great benefits of going smart:slight_smile:

 

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

 

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

84 replies

Newcomer
February 2, 2026

hello! 

I an a single inhabitant living in a small apartment with only one ecoso electric heater which i only turn on during the night. Other than that, I dont have anything else that notably consumes energy yet somehow I am being charged 260£-300£ per month for a 30sqm apartment with one inhabitant. 

Im using the simpler energy plan and have a smart metre. The recorded monthly units are all at 1000kWh which (combined with the bill) i believe is impossibly high. I’ve had someone check my metre and they found no problem since the metre sends reading automatically but the person agreed that this consumption cant be the case.

 

Please help me find a solution or suggest what may be going wrong.

Nukecad
Super User
Super User
February 2, 2026

What rating is the heater? How many hours do you have it on for?

If it is the only heater that you have then let’s say that its a 2kW Esoso ceramic heater.
To use 1000 kWh per month on it’s own you would need to be running it on full power for 16 hours a day. (2 x 16 x 30 = 960).

The thing that stands out is that you say:

I dont have anything else that notably consumes energy

However you may be surprised just what things consume, so just what else are you using?

Presumably you have an electric shower? Electric showers use a lot of power.
Maybe a heated towel rail in the bathroom?

How are you heating your hot water?

How are you washing your clothes, bedding, etc?
How are you drying them? Tunble dryers use a lot of power.

What are you cooking on/with, electric hob/oveh, microwave, Air fryer, something else?

Do you have a dishwasher?

I said, Hey - Watts going on.
Abby_OVO
Community Manager
Community Manager
February 2, 2026

Hey ​@kalllll 

 

Sorry to hear about this, though I’m glad to see one of our community members has already stopped by with some really helpful questions. 

 

It would be really good to know some more information so we can all advise as best as possible.

 

I also wondered about the bills themselves, are these based on the smart meter readings? Or are they based on estimates? I know you mentioned the smart meter is sending readings, do you know how often these are being sent? Monthly readings can lead to estimated bills, if we’re unable to use more accurate half-hourly data.

 

If you’d be able to give us some more information based on the above questions from myself and Nukecad, we’ll also hopefully have a better understanding of what’s going on.

 

The following topics may also be helpful here in the meantime:

 

Currently Playing: She's Electric
Jeffus
Rank 20
Rank 20
February 3, 2026

Hi ​@kalllll 

Could you post some screenshots of what you see on this page on a typical day

https://account.ovoenergy.com/usage?datePeriod=daily&unit=kwh

Then we can see how much electricity you are using every 30 minutes on a typical day

It will give us some idea of when the usage occurs and hence what is happening