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April 13, 2017
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I give meter readings each month, why is my bill still based on estimates?

  • April 13, 2017
  • 167 replies
  • 15219 views

Why, when I faithfully provide meter readings on time, each month, does OVO still give estimated readings on my bills?

Best answer by Darran_OVO

Updated on 15/08/25 by Abby_OVO

 

Meter readings, usage and estimates

 

If you haven’t had smart meters installed, we’ll send you a meter reading reminder a few days before your monthly summary is created. The easiest way to submit these readings is on the ‘Meter readings’ page of your online account or OVO app (download for Android or iOS):  

 

When’s the best date to submit a reading for my monthly summary?

 

The best date to submit your reading is on or just before the date shown on your bill - the email or text reminder you receive may suggest you enter this the day before to make sure it’s received on time. If you do enter the reading slightly early we’ll only estimate your usage between the date you entered the reading and the date the statement was generated, so it should be fairly accurate.

 

When I enter my reading how long does it take to update my balance?

 

Every time you enter a meter reading on your online account, your account balance is recalculated to include your usage costs up-to-date. The balance will usually update instantly although it can take up to 24 hours. It’s worth checking the balance before submitting your readings, so you can easily check that the balance has updated. If the balance show on your monthly summary is estimated, you can always check the accurate balance by submitting another meter reading.

 

How are my estimated readings calculated?

 

If we ever use an estimated reading on your monthly summary, this is calculated based on the last actual reading you gave and your Estimated Annual Consumption (EAC) to give us an idea of what the reading is likely to be. You can always correct any over or under estimated readings by submitting an accurate reading.

 

What’s the best way to avoid estimated statements?

 

As a smart meter can be programmed to send us a reading half-hourly or daily, we can always be sure we’ve got a reading on the date your monthly summary is issued. This will mean no more worrying about reading the meter manually and more accurate billing and usage information on your online account or OVO app (download for Android or iOS.

 

The following community topic may also be helpful here:

 

 

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

 

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

167 replies

Darran_OVO
Retired Moderator
Retired Moderator
April 13, 2017

Updated on 15/08/25 by Abby_OVO

 

Meter readings, usage and estimates

 

If you haven’t had smart meters installed, we’ll send you a meter reading reminder a few days before your monthly summary is created. The easiest way to submit these readings is on the ‘Meter readings’ page of your online account or OVO app (download for Android or iOS):  

 

When’s the best date to submit a reading for my monthly summary?

 

The best date to submit your reading is on or just before the date shown on your bill - the email or text reminder you receive may suggest you enter this the day before to make sure it’s received on time. If you do enter the reading slightly early we’ll only estimate your usage between the date you entered the reading and the date the statement was generated, so it should be fairly accurate.

 

When I enter my reading how long does it take to update my balance?

 

Every time you enter a meter reading on your online account, your account balance is recalculated to include your usage costs up-to-date. The balance will usually update instantly although it can take up to 24 hours. It’s worth checking the balance before submitting your readings, so you can easily check that the balance has updated. If the balance show on your monthly summary is estimated, you can always check the accurate balance by submitting another meter reading.

 

How are my estimated readings calculated?

 

If we ever use an estimated reading on your monthly summary, this is calculated based on the last actual reading you gave and your Estimated Annual Consumption (EAC) to give us an idea of what the reading is likely to be. You can always correct any over or under estimated readings by submitting an accurate reading.

 

What’s the best way to avoid estimated statements?

 

As a smart meter can be programmed to send us a reading half-hourly or daily, we can always be sure we’ve got a reading on the date your monthly summary is issued. This will mean no more worrying about reading the meter manually and more accurate billing and usage information on your online account or OVO app (download for Android or iOS.

 

The following community topic may also be helpful here:

 

 

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

 

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

Did a reply solve your question? Then mark it as the correct answer!
Newcomer
August 14, 2020

Similar but different issue here. With other suppliers (gas or electricity) if a reading is sent late, then it is taken into account and the balance adjusted.

OK if OVO don’t do this, but why if I send in a reading one day late is there no message to say it won’t be recorded? Not even a warning that it’s too late.

 

Transparent
Rank 20
Rank 20
August 14, 2020

Thanks for raising that issue @AlisonH - good point!

The new Billing System is still in it’s early days. Unlike many other Energy Suppliers, OVO have developed their own system. That means the programming team are still working on it and can add features.

Their first priority was to ensure that it fully complies with Ofgem’s guidelines, which it does.

So let’s ask the duty Moderator, @Eva_OVO, to see if your suggestion can be allocated a “ticket” and passed to the programmers in London.

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Eva_OVO
OVO Staff
OVO Staff
August 14, 2020

We’ll record the reading, @AlisonH, but it won’t be recorded on your summary if one has already been generated. You’ll see the reading on your next month’s summary.

My friend told me how electricity is measured and I was like Watt!
Newcomer
August 14, 2020

I don’t agree. I know I have been submitting readings, but the record still shows as Estimated. I have also raised this with the on-line chat and had the same answer. 

I will just have to make sure I submit absolutely on the day in future and take a screenshot. 

 

Transparent
Rank 20
Rank 20
August 14, 2020

I believe I understand what you’re saying @AlisonH. Let me just repeat this back to you so I can be sure we’re on the same page:

If the submitted reading is just beyond the cut-off date/time then that month’s bill will be issued based on usage which is 100% estimated.

Let’s say that you then submit the following month’s reading in time. Since the Billing System only needs to note the cumulative total, there is no mention of the previous actual reading which you gave.

Am I correct so far?

 

Now @Eva_OVO (who is a Forum Moderator) states that “You’ll see the reading on your next month’s summary”.

Here's an example (from one of my gas bills in Sept last year) showing what Eva suggests you should see:

Now this is a particularly ‘silly’ Bill because my meters were part of a test being done by an OVO Engineer, and the estimate is therefore way out!

Nevertheless you can see that I should’ve provided a reading by 13th August, but I didn’t do so until two days later.  As a consequence my August Bill was entirely estimated.

My September Gas Bill therefore shows the late Customer Reading, and then yet another Estimate because I didn’t provide that September’s reading in time either.

 

Now if I turn to the electricity Bill for the same period I see this:

Never mind that this ran to 18th Sept instead of 13th. The important bit to notice is that there is no Customer Reading shown for 15th August, despite the fact that I submitted readings for both gas and electricity together online.

 

Is this what you are seeing?

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Newcomer
December 2, 2020

I have had enuf of ovo. I send reading on the day reminder is received. So no excuse about estimates when units added by a heck of a lot, readings totally ignored and changed so that I am being charged for electricity I haven’t used and pay extra vat. Never had a problem with SE in all the years  I was with them now  billings are a mess.

Newcomer
December 2, 2020

Should have been enough. Don’t want to be cast as  uneducated 

Blastoise186
Super User
Super User
December 2, 2020

Hi @kitkat ,

I’m really sorry for the trouble there. Could you get in touch with the support team in the morning to provide your actual meter readings? They’ll be able to override the system and get you an accurate bill. If you’ve used less energy than you’ve been charged for, you’ll also be able to get the excess payments refunded as well.

You didn’t mention whether you’re on the new billing system, as this might be a possible clue. I’m happy to help you with some advice though.

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Newcomer
December 2, 2020

Thank you for replying and I certainly be phoning again if it is not constantly engaged again. My gripe is about the discrepancy in my meter readings and why they are not used and have a great mount of units added to them.