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Rank 1
February 20, 2020
Solved

Calorific value (CV) of gas - Is this information on my bills accurate?

  • February 20, 2020
  • 28 replies
  • 6169 views

When I check my Gas Bills, I am finding that, using the Calorific Value stated on page 6 of my Bill, the kWh used figure does not work out as per the value stated. This seems to be because the calculation was not made using the Calorific Value quoted. Usually it is only an error of plus or minus 0.1 of the stated value but it should be the correct value or else the bill is technically wrong !  

Why can you not get all of the figures correct so that the bill can be checked fully?

Best answer by Transparent

Updated on 26/08/25 by Abby_OVO
 

On our live-billing platform, your energy charges are calculated and applied to your balance on a daily basis. The monthly email gives a summary of how much your total charges were for the previous month. You can log-in to your online account or OVO app (download for Android or iOS) anytime to view your up-to-date balance, detailed charges and usage. Find out more about how this works in our FAQs below:

 


In order to covert a m3 unit to kWh, we need to carry out a complex equation which involves taking into account the calorific value of gas. As this can change month to month, the calorific value we use to calculate your charges may differ slightly to the one used by your meter, which uses a set value of 39.2. As the calorific value changes so often, it's not practical for the meter to be constantly updated with it. However your monthly summary will use the up-to date calorific value.

 

When submitting your meter readings manually on your online account or OVO app (download for Android or iOS), you’ll only need to send us the m3 figure and we’ll do the rest. Find out how to read your meter reading manually here.

 

Hope this helps :slight_smile:

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

 

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

 

28 replies

Blastoise186
Super User
Super User
January 22, 2023

This is a three year old thread, so there’s no value in unmarking the solution. If you have a better one to propose, feel free to post it and a moderator can consider it. Otherwise, the existing one will remain marked as a solution as-is.

Threads very rarely get unmarked as solved here. It’s only done if the mark was added by accident or the answer given is completely inappropriate. In both cases, it’s more likely the answer will get reassigned to something better or the original answer fixed up.

And besides that, the chances of unmarking a solution on a long standing thread with over 3000 views at this point is extremely unlikely.

It’s otherwise best to keep the existing one unless something better is more suitable. That way, others coming here can at least get something useful. The needs of the many outweigh the needs of the few here.

You have to bear in mind that EVERYONE involved in a thread gets notified if the best answer is assigned or reassigned. It’s not fair on those users to get spammed with such alerts without a really good reason.

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!
January 22, 2023

I have not in anyway said this thread shouldn’t be closed. All I am pointing out is that the original questions have not been given a definitive answer.

What CV figure are OVO using to calculate a bill and why is it not available on any bill as it used be? That question has not been answered.  A possible answer could be:- Forum members do not know therefore cannot  answer, or OVO Forum administrators could respond with, we are not prepared to give an explanation. That way it leaves it to customers to resolve this issue in other ways.

I will add that as a forum member, the only thing I can say is, I am unable to say why OVO will not give this information.

Blastoise186
Super User
Super User
January 22, 2023

Sigh… It’s not like I haven’t explained this a thousand times

It’s most likely because of two different billing systems. The old one is going away and has a different format for bills than the new one. If you’d like to see changes to the new one, feel free to suggest an idea via https://forum.ovoenergy.com/ideas . It’ll likely yield better results than simply shouting into a void and ranting about it not echoing back at you.

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!
January 24, 2023

I know this is an old thread but still OVO have not explained why the CV is not on the bill or even give the CV over the phone when asked., why they stopped putting the CV on the bills? Surely these are simple questions that are easy for OVO to answer. It is no good forum managers saying it can be looked up on the National Grid, not everyone can do that. I have done that and recorded all National Grid CV data, plus calculated rolling daily averages then at the end of my billing period will calculate that average, which is the one OVO should be using for my bill. If OVO do not respond sensibly by the end of the month (I have tried all avenues) I will be presenting the figures I have to OVO CEO to ask him to confirm or reject my data. Also he may be able to answer why nobody from OVO has responded, excepting only the forum volunteers who to date have not given a definitive answer. Probably because they can’t.

Below is an example of how the National Grid display CV data on a daily basis. As this so plain to see, I do not understand why OVO withhold the CV figures? 

                           

  

Jeffus
Rank 20
Rank 20
January 24, 2023

@JGANLEY I have added an idea so you can expand on it with further posts with more details

Then you can see how many customers on the forum think it should be a priority and vote for it. 

If you focus on posting on the idea that may help you i suspect, rather than posting on a variety on threads on the forum where your posts may get little attention. 

Obviously up to you. I don't work for ovo.

Hope that helps

 

 

Rank 1
February 8, 2023

Why is Ovo altering my bills after I have downloaded my copy and then using the altered bill as the start point for the next bill?

Blastoise186
Super User
Super User
February 8, 2023

Hi @marshall32 ,

Do you have gas? If so, it might be updated to account for the calorific value.

However, we can’t answer this one very easily here. You’re probably better off calling 0330 303 5063.

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BPLightlog
Super User
Super User
February 8, 2023

There are occasional updates after initial issue. I had one where the energy support payment was added after the first issue. And of course the updated bill is the start of the new month

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