Are my peak/off peak registers the wrong way round?

Try https://ovoenergy.com/help for this one. :)

Just so you know, fixing this may take some time. Failing that, https://ovoenergy.com/feedback has your back.

Sadly, yes. We have been looking at at least four cases where this seems to be happening. Since Economy 10 tariffs are not readily available, could it be that you inherited your supply from SSE, which was eventually absorbed by OVO?

The cases I mentioned all involve SSE migrants with apparently identical smart meters and similar heating arrangements. There’s been no resolution so far, and no explanation of why one customer’s E10 set-up is working properly while several others aren’t. I’d refer you to this post in a long thread in case you’re interested in adding another data point to the evidence we’ve managed to assemble so far, assuming your arrangement is comparable.
  

Wow, thanks for your reply. It does give us some small measure of comfort that we are not alone. We were indeed SSE customers that were then taken over by Ovo and our meter looks the same as the one shown in the thread you directed me too. I await with interest the response from Ovo.

Hey @Oceantrader,

Welcome to the OVO Online Community,

I can see you have already been given some helpful suggestions from our Community Members,

Could it be that as it’s darker in winter you’re using more lighting during peak times I wonder? 

That is certainly true but it would not account for the massive increase - nor the relative stability of the recorded off peak.   

That looks to be a long time coming. It might help speed things up a bit if you managed to post the details I asked the other victims to produce:
  

If you’re concerned about sharing this sort of stuff publicly, there’s no need to be - there’s no personally-identifiable information involved (addresses etc.) that you can’t easily remove before posting. 

I do hope you’ll help us out 🙂

[{"mpxn":"*edited by moderator*","msn":"21M0375587","address":[","region":"_H","profileClass":"02","meterType":"S2ADE","mapId":"SGNS","lineLossFactorClassId":"104","registers":[{"tier":1,"clockingTimeId":40,"timeOfUseLabel":"peak","meterRegisterId":"1","timePatternRegime":40,"measurementQuantityId":"AI","switchedLoadIndicator":false,"meterRegisterMultiplier":1,"registerMappingCoefficient":"1"},{"tier":2,"clockingTimeId":206,"timeOfUseLabel":"offpeak","meterRegisterId":"2","timePatternRegime":206,"measurementQuantityId":"AI","switchedLoadIndicator":true,"meterRegisterMultiplier":1,"registerMappingCoefficient":"1"}],"start":"2022-07-28T23:00:00.000Z","end":null,"fuel":"Electricity","meterNoOfDigitsOrDials":5}]

I think this is the best that I can do, Any good?

This is the reply I have had from Ovo

Thanks for getting in touch with us, I'm here to help you with this today. 

I've sent a message asking them to get in touch with you and arrange a more appropriate time to discuss matters, however I have noticed a problem with the meter reads that were submitted prior to your supply being migrated to ourselves, and as you say, the reads appear to be out of line, and possibly transposed for which I can only offer my sincere apologies. In order to resolve this matter I have raised a case to our Billing Operations team 

I have requested that they investigate a write-off due to the inaccurate nature of the reads that SSE provided us as you appear to have been charged incorrectly prior to your migration, and this will take up to a maximum of 45 working days before being resolved fully. This should include our Billing Operations team reaching out to discuss the matter with you before coming to a resolution. As part of the resolution I have been asked to obtain a picture of your meter in order for us to begin our investigations. If you could please take a picture of your meter including the meter serial number that will allow us to begin our investigations.

Once again I can only offer my sincere apologies that this issue has not been picked up prior to this point however I am hopeful that this matter will be resolved soon and a new bill issued for you based on the correct details.

I have sent them the photo of the meter with this reply

Unless I misunderstood what you are saying, you appear to be blaming the problem on inaccurate readings from SSE prior to the migration to OVO. However, as you can see from my summary of peak and off peak charges up to December last year, this issue is an on going one. It is inconceivable that we only used 187 off peak units from 22nd November to 21st December, but used 1258 peak units, when all our heating should be running off peak.

That’s perfect! 

Your setup looks like a real *Edited by Mod*. The plan is called Economy 10, but the rates and timings shown are for Economy 7 in your region (Southern, shown as region _H in the JSON file). I can’t say how this is possible.

The JSON file also shows that the meter is apparently set up for Economy 7*.  If your heaters are operating on an Economy 10 schedule, then a lot of the electricity they’re using will be being charged at peak rates.

This meter is capable of controlling when the heaters switch on and off. Is there another timeswitch somewhere in the house that governs this? Can you say what time they switch on and off? E.g do they come on at 13:00 and again at 20:00? If you have a working IHD, it should be pretty obvious when the current power draw shoots up to several kW.

On E10 in your region, the offpeak hours are 00:00 - 05:00, 13:00 - 16:00 and 20:00 - 22:00. If your heaters are following this schedule, it’s only the units consumed between midnight and 5AM that are charged at the low rate. Afternoon and evening consumption would be at peak rate. Is this what is happening, do you think?

I didn’t think it was possible, but if this is what you’re seeing, and there’s no other time control for the heating circuits, it looks as if the meter may be recording peak/offpeak usage according to the E7 timings, but the switch in the meter (the ALCS) is turning the heaters on and off according to the E10 timings. Please prove me wrong!

*   Time Pattern Regime (TPR) 40 for peak hours is ‘Weekdays & Weekends 0700-2400’, while TPR  206 for offpeak is ‘All days 0000-0700’. This governs when the meter records usage on the two registers, peak and offpeak. My own identical meter has exactly the same setup, but then I’m supposed to be on Economy 7.

Well that sounds like an interesting conversation to be had with OVO! I think this could well explain what is happening. The heaters can be turned on between 12 midnight and 5am; from 13.00 to 16.00 and from 20.00 to 22.00. Each one has its own on/off switch so they do not automatically come on during these times, but during the recent cold weather they wee turned on rather a lot during the day. Our Smart meter does shoot up when the heaters are on during the day but I foolishly assumed that this was normal for this type of heater - I don’t think I have seen what it does overnight to compare. As far as I am aware there is no other time switch in the house. This has been really helpful, thank you.  I now have the small matter of getting OVO to agree that this is what has been happening. I’m guessing their response will be “That’s impossible!” I’ll keep you posted.