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Rank 5
February 19, 2025
Solved

why is my electric costing £10 a night? storage heaters

  • February 19, 2025
  • 17 replies
  • 1180 views

I have a new smart meter and I’m newly on Economy 9. I have 4 newish Dimplex storage heaters. One is larger and a medium one and two smaller ones. As well as an immersion water heater. The meter replaced a faulty meter which was preventing the correct tariff working. 
I’m on pay as you go  

However I’m finding that it’s costing usually over £10 a night. I have checked and the majority of this is used at night and I can see the usage during the night is approximately £1.25 per hour and then drops to about 10p per hour during the day. It just seems excessive as it’s almost £300 a month for a 2 bedroom house!

I have tried switching off the immersion heater or 2 of the heaters but this resulted in no hot water and an expensive reheating of the tank the next night and didn’t really make much difference. I’m assuming that the other heaters then used more electricity because the temperature was lower. 
 

No gas in my area 
 

Can anyone please help? 

Best answer by Firedog

Updated on 10/06/25 by Abby_OVO

You’re quite right - that’s quite wrong!

That is the standard variable PAYG tariff, single rate, so yes, your meter isn’t properly configured at least as regards the tariff. It could be that the switching times aren’t right, either (offpeak 04:00-07:00, 13:00-16:00 and 20:30-23:30).

This is the tariff you should be on:
  

Economy 9 plan for DD8  
Prices exclusive of VAT

Can you see when your heaters are charging up - an indicator lamp that lights up when the power is on? If there’s no indicator, can you hear when they switch on? Storage heaters often start creaking a bit as the metal parts heat up and expand. They should be coming on sometime between 13:00 and 13:30 and again between  20:30 and 21:00. 

Please check the times as precisely as you can, then come back and tell us. We can then say what you have to ask Support to do. 

 

New Pay As You Go customers will be sent their tariff details in their welcome email when they set up an account. It’s important to always check the pan details to make sure they’re correct. If anything looks wrong, you can contact our PAYG Support Team.

 

 

17 replies

Flora48Author
Rank 5
February 21, 2025

I’m 100 percent sure of the tariff and times given to me by the complaints manager as I wrote them down specifically because of my previous experiences with OVO. I have his name and his email address. I emailed him yesterday with the information and he is apparently going phone back on Monday. In the meantime no fix happened yesterday.  
 

I was also surprised by the times and tariff because I was on economy 10 (well I was supposed to be ) and then economy 7 recently so I had an idea of the times etc. 
 

i find the chat is very difficult because operators don’t understand the issues normally. This has been one of my biggest problems 
 

Firedog
Super User
Super User
February 21, 2025

I’m 100 percent sure of the tariff and times given to me … I was also surprised by the times and tariff because I was on economy 10 (well I was supposed to be ) and then economy 7 recently. 
 

Now you’ve got me really confused, I’m afraid. When you started this topic two days ago, you wrote “… I’m newly on Economy 9”.  When did Economy 10 and Economy 7 come into the picture - since then, or before? What did you ask for when your meter exchange was booked? 
  

i find the chat is very difficult because operators don’t understand the issues normally. This has been one of my biggest problems 
 

Yes, I recognize that difficulty. However, you mentioned having a complaints manager. If you have entered a complaint, the case passes to the resolution team to sort out, you should hear from a named resolution specialist (they have a baffling variety of titles, I’m afraid) and you should be given a complaint number. Does this sound familiar?

If you have your complaint number, be sure to quote it at the beginning of the real chat (e.g. “I would like to hear how my complaint no. 1234567 is progressing”). That should remove any need to go over old ground again. 

 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Flora48Author
Rank 5
February 21, 2025

I was on economy 10 for several years but I suspected that I wasn’t actually on the correct tariff even then. I decided to ask for a smart meter because I wanted to monitor the usage and was given one which unfortunately stopped communicating after a couple of months. Then I was given a different meter that wasn’t a smart meter but it stopped my immersion water heater from getting the signal to switch on at night. It took me a 2 year battle with SSE and a complaint to the ombudsman and then a traditional key meter was fitted and I was put on economy 7. This was around the time OVO took over from SSE however OVO then did a key overwrite to compensate for an engineer not arriving. This according to OVO then messed up the meter and stopped the economy 7 working this was in May this year. After another complaint this time regarding why I was now paying over the odds for my electricity because I no longer had economy 7and another issue OVO then installed the current smart meter on the 15th of January. A couple of days later the complaint handler then phoned me and told me that at midnight that night I would be put on economy 9 as that was the best tariff for the all electric storage heaters and the times and tariff previously mentioned. I have estimated that I am paying approximately £4 a day more or should I say night on the single rate tariff than what I should be if I was on the economy 9 tariff. I will take note of the usage in kw tonight and work it out precisely in preparation for when or if the complaint handler does phone me on Monday. 

Flora48Author
Rank 5
February 21, 2025

I do also have a complaint no which was closed when the complaint according to OVO was resolved by putting in the current smart meter and putting me on the correct tariff. I have used the complaint no to get in touch with the same complaint handler to say that they have not in fact resolved the issue 

Firedog
Super User
Super User
February 21, 2025

Thanks. That’s quite a saga. It might have helped if you’d told it at the beginning, though.
  

… OVO then installed the current smart meter on the 15th of January. A couple of days later the complaint handler then phoned me and told me that at midnight that night I would be put on economy 9
  

OK, so this is one update that didn’t take, if your immersion heater is coming on at 23:30 instead of 04:00 as it would be on Economy 9. It’s also clear that the other update - to the tariff itself - didn’t work either, because at 05:09 you should have been on the offpeak rate of 20.78 p/kWh, not the 24.45 p/kWh your IHD was showing. 

On Monday, please impress on your complaint handler that your tariff information needs updating in the meter, and that the load control switch has to be set to the same timings as the tariff. I hope you manage to move forward … 

 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Flora48Author
Rank 5
February 22, 2025

I’m frankly exhausted and sick of checking every single thing that OVO does. I haven’t mentioned everything in the saga because it wouldn’t be relevant. It does include engineers turning up the next day after the arranged appointment or not at all. As well as a cable that was “in the wrong place “.
 

I’m thinking that there are probably people out there in the same as me on a too high tariff who haven’t realised and simply trust as I did that OVO is doing their job!  
 

Thank you again for listening and your help. I will update you on Monday 

Flora48Author
Rank 5
February 22, 2025

Thanks to Firedog giving me the correct tariff and assuming I’m supposed to be on Smart Economy 9 I have now been able to work out exactly how 

much I’ve been overcharged per day (£2.33) and I am ready to ask for this money refunded