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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

Blastoise186
Super User
Super User
December 2, 2020

I can understand you there.

When it comes to contacting OVO, Live Chat tends to be a bit faster and more reliable than phone. If you let the agent know you've spoken to me here on the forum and provide a link to this thread, they’ll know what we’ve talked about already.

Oh, and if you log into MyOVO before firing up Live Chat, you might also find a little surprise - you’ll instantly clear security and won’t have to go through that with an agent. I hope it helps.

The support team can override the system with your readings, which should force an update to go through.

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Newcomer
September 10, 2021

I have been sending the picture of my meters (both gas and electricity) to Ovo on the last days of my billing period via e-mail. However the closing reading  on my bills is constantly much higher than the actually physical reading of the meters.

The most reply I get that “working on the Smart reader issue.”

It seems I am being massively overcharged constantly on the bills.

Anybody having same issue?

Blastoise186
Super User
Super User
September 10, 2021

Hiya!

It sounds like you're getting estimated bills because you're not submitting readings quickly enough. When you put readings in manually, it's best to either phone them through, go via live chat or use self service options via MyOVO or the OVO Energy app. That should fix your bills. :)

Emails take a while to answer and I'm afraid that the turnaround time isn't fast enough for sending meter readings.

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Jess_OVO
OVO Staff
OVO Staff
September 13, 2021

Sorry to hear of the issues you’re having within inaccurate estimated readings being used on your monthly summaries, @AgSz.

 

As you mentioned emailing these in, I’m wondering if you’ve managed to login to your online account or OVO app (download for Android or iOS) yet?

 

Logging in and heading over to the ‘Meter Readings’ page is the easiest way to submit meter readings - what’s better, it will also update your balance straight away, which is really helpful if the estimates used have been too high.

 

Hoping this helps get the issue sorted - but as ever we’re always here to give advice if you’re still having problems. :slight_smile:

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Pierssy
Newcomer
Newcomer
November 24, 2021

I just received my bill for Oct - Nov, it is done on the 18th of the month. This month I gave my reading on the 17th, OVO go on to add a bit (estimate) to round it up to the bill day, the 18th.

I just sat down and calculated how much they ‘estimated’ and it is way off, in this instance we are only talking about 24 hours use, but the extra added is much higher than any reasonable calculation could reasonably add. For gas, they added 12 units and considering the actual reading indicates for this month we used a total of 58 units, about 2 units a day? The same goes for the electric, OVO added 30 units for approximately a 24 hours period, when the recorded readings show the usage this month to be 8-9 units a day. This affects our positive credit status, doesn’t it? I am willing to concede I may have got this wrong, my maths can be a little wayward. But if I am not wrong, then why do OVO not just use a simple percentage to estimate the excess since the readings were given?

Divided the given readings difference, by the number of days, to give a usage per day within the billing period.

 

Blastoise186
Super User
Super User
November 24, 2021

Hey there @Pierssy !

Hmm… That looks like the legacy billing system to me. Do you still use an OVO ID to login to your account? I don’t need to know what the ID is, just whether you’re using one - that helps me to know for definite which system you’re on.

While the new billing platform is custom built in-house by OVO’s sister company Kaluza, the legacy billing system is actually a third-party product that OVO purchased from another vendor back in the day. OVO doesn’t really have much control over the latter as only the vendor for that one can fix an issue like this.

My understanding is that a lot of these issues from the legacy system have been fixed in the new one, so this shouldn’t be a problem once you’ve been migrated over (the new one is a lot more accurate in general).

However, the Support Team will be happy to discuss this with you, as they might be able to optimise your Estimated Annual Consumption values to better match your actual usage and (hopefully) squash these estimates down a bit. It may also result in your payments dropping slightly at the next Direct Debit Check-In or when you come to renew. It’s definitely something that I’d recommend asking them about, as it may help to smooth things out a bit more effectively.

Either way, you’ll only be billed and pay for what you actually use, so the bill you get next month will technically “fix” the estimated usage for that one day and reflect it in the following bill. Technically, it could cause minor quirks in your credit balance, but it’s probably not too bad given that it would probably remain fairly stable anyway.

While Smart Meters can also resolve this even in Monthly mode, I can understand if you’re not ready to upgrade right now. I’ll drop the link here just in case you are interested, but feel free to hang onto your current setup in the meantime if you’d rather keep things as they are.

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Jess_OVO
OVO Staff
OVO Staff
November 25, 2021

Welcome to the OVO online community, @Pierssy -

 

See you’ve already met one of our top volunteers around here, @Blastoise186 who’s given some great advice which might help explain why you’ve noticed the difference between the actual readings you submitted and those estimated readings that were generated the following day.

 

In case you wanted more information on the ‘Estimated Annual Consumption’ (EAC) figure that was mentioned we’ve got a great guide to this here.

 

We’d also second the recommendation to consider a smart meter installation - this really helps ensure that your billing is based on actual readings received from your meter rather than estimates generated on your billing date as well as offering some more great benefits.

 

Have you been submitting you meter readings on your online account? As @Blastoise186 we’ve been updating all our members to a new online account which should look something like this (your account should be updated shortly if it’s not already!):

 

Exact appearance may vary


One of the great features of this new online portal is the ability to calculate your balance on a daily basis - any time you submit a reading here you’ll notice your balance will update to account for the up-to date usage, a great way to check things following an estimated statement. We’ve got a full guide to help you get to grips with the way this works here.

 

Hope this information helps - Do pop back if you’ve got any more questions, we’re always happy to help here! 

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Pierssy
Newcomer
Newcomer
November 25, 2021

Hmm… That looks like the legacy billing system to me. Do you still use an OVO ID to login to your account? I don’t need to know what the ID is, just whether you’re using one - that helps me to know for definite which system you’re on.

 

Many thanks @Blastoise186, It’s not really a huge issue, and yes I log in with an ID. Just odd that the top up estimate should be so wildly excessive. 

All the best

Piers

Newcomer
May 6, 2022

I am relatively new to Ovo & have the same problem with not being able to get meter readings in late enough and ridiculously high top up estimate being used.  Used only 23 metered units or whatever they are called from 28 to 29th of the next month &  and Ovo add 4 extra estimated units  for one day?  So it seems as well as getting penalised for not having DD customers also get penalised for not having a smart meter, as this seems to be the only way to avoid an estimated top up to bills.

 

 

M.isterW
Rank 6
Rank 6
May 7, 2022

You only pay for the electricity you use so as long as you're providing regular meter readings I wouldn't worry about the estimates that OVO apply to the end of each month. Any inaccuracy in the estimate will get cancelled out when you give your next reading.

 

Estimates are done by an algorithm and 4kWh for a days use isn't unusual. We use a lot more than that every day.

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