Skip to main content
Best answer by Abby_OVO

Updated on 22/07/26 by Abby_OVO

Hey @Turnip 

 

I’d be in agreement with our volunteers on this one from everything you’ve explained.

 

My question is and cannot get ovo to understand is if telly switched off it does not register a usage, but my econ 7 switched off at wall plus at master switch registering nearly ten quid for no reason

 

The meters don’t have on/off buttons and continuously record your usage - they cannot be switched off. With E7, your meter works on 2 timeframes - a day and a night rate (times vary per area), when the day rate stops clocking, the night rate kicks in. No matter if you’ve switched off the immersion or storage heaters, you can’t switch of the actual meter.

 

1 unit overnight is not an unusual or unreasonable thing to see, for things like the fridge which most people leave on all night, 365 days a year.

 

I understand you believe it’s not recording this usage as you’ve said everything is off, but even if you’ve switched the storage or immersion off, the meter will still clock any other usage during this time on your night rate - so if the fridge is on, the meter will clock that usage. Similarly, if you were to cook a meal or make a cup of tea during the off-peak time, this usage would be clocked on the off-peak rate, as that would be the only register clocking - the meter never stops recording your usage. They’re not going to not charge you for usage overnight - hence why the meters can’t be switched off.

 

Unless you’ve switched the actual electric off at the mains, and you therefore don’t even have the fridge running or any access to power, so therefore no usage could even occur, then that would be the only case we could imagine seeing absolutely 0.0kWh being used.

Otherwise we’d expect there to be at least minimal usage throughout the night rate. If it’s recording less usage than you think, and maybe more on the day rate than expected, then it may be that the time-switch is faulty, in that case, the meter would need to be replaced. See below a similar thread where the time-switch was the faulty for no usage recording overnight:

 

 

Our volunteers have tried their best to help and to understand the circumstances, and have given you all of the information that we would and then some, as they’ve even got experience with their own set ups to help back all of this up. 

 

  

If this is so why does my econ 7 meter not charge for the usage of tosster and kettle when im up at 5 in morn? It still only registers 1 unit.

Do the sums:

  • Kettle 3kW x 3 mins > 9 kW-minutes  
  • Toaster ditto > 9 kW-minutes
  • Total 18 kW-minutes ÷ 60 = 0.3 kWh

If your fridge, freezer etc. are consuming say 0.5 kWh overnight, this will register as 1 unit. Add together: 0.5 + 0.3 = 0.8 kWh. Still only registering as 1 unit.

 

 

I’ve linked below to a helpful topic on Economy 7 if you wish to take a read: 

 

 

If you’re still debating this matter then you can speak with the Support Team, but as Blastoise has said, the likelihood of the meter being faulty is slim, especially based on the information you’ve provided over the forum. It may be worth getting the smart meter installed so that you can view your usage in more detail and this may show you what’s using energy overnight. 

 

I’ve linked to another topic on situations where the meter is clocking too fast, this may help you judge whether you want to proceed with testing or not if you were considering going ahead with it.

57 replies

Blastoise186
Super User
Super User
June 23, 2023

I am a customer, as are both @Firedog and @BPLightlog . We all volunteer our time for free and make no money out of this.

We’ve done our best, but we can’t find any signs of a problem here.

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!
Firedog
Super User
Super User
June 23, 2023

Economy 7 as was uses diferent sets of wires for overnight usage.   

 

Yes, that’s what we see in the CU where everything’s off. But there’s a clock in the meter itself that switches between registers at the appropriate times.

You’re not giving us all the details; you said that while you were away, you were clocking up 1kWh per day. I tried to explain that that was quite a reasonable consumption level when (almost) everything’s switched off. Now you’re saying that you’re clocking 1kWh overnight while you are at home. That again is reasonable; on top of the background usage that’s always going, there’s all the stuff that happens overnight when you’re at home: lights, chargers, TV and Xbox on standby, bedtime drinks, early morning tea … the sort of thing a smart meter would be able to help you pinpoint.

What you’ve told us indicates  that being on an E7 tariff, all your usage in off-peak hours is being charged at the off-peak rate regardless of whether it’s on the heating E7 circuit or not. Blastoise explained it pretty clearly: “Only one rate can be clocking usage at a time, not both. Anytime the Night Rate register starts spinning around midnight, the Day Rate register stops spinning. And when the Day Rate register starts spinning at around 7am, the Night Rate register stops spinning.“ By the way, the register switch happens at the right time to the second. If there is a breaker that makes sure your E7 gear is off during the day, it won’t turn on precisely at midnight; it could be at any time within the first ten minutes or so. This is to ensure that a whole town’s storage heaters don’t switch on at exactly the same time, because if they did, something would blow up. 

Thanks for the pictures, by the way - they’re helpful.

 

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. |
TurnipAuthor
Rank 4
June 24, 2023

You do not understand at all, i have tried to give you diferent examples of my situation.  You are telling me that it is acceptable to be charged for one unit per night even though switched off!  

You are wrong saying that all electric resorts to econ 7 at night, if that was the case there would be no need for a complete separate system, would there? 

Please research this as what you have been told is incorect.  Keith.

BPLightlog
Super User
Super User
June 24, 2023

With the greatest respect @Turnip if you just want somebody to agree with you, the best place is social media not this help group. All we have tried to do is offer solutions, some from experience, others from what’s been seen before over many years. It sounds like we cannot help you unfortunately 

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Firedog
Super User
Super User
June 24, 2023

You are wrong saying that all electric resorts to econ 7 at night, if that was the case there would be no need for a complete separate system, would there? 

I have a completely comparable setup, the only major difference being that mine is a smart meter. My storage heaters are on a separate circuit, governed by a separate 63A CU just like yours. They have been switched off since 1 April 2022. Even so, my off-peak meter register has clocked up 547 kWh in that period, which is 448 days long. I make that 1.2 kWh per night on the ‘E7’ register even though all the E7 stuff is switched off. All of that has been charged at the cheap rate according to my bills.  So I submit that I’m not wrong …

It’s solely the clock in your meter that determines what counts as off-peak, not the way your heaters are wired up. 

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. |
Blastoise186
Super User
Super User
June 24, 2023

I'd also like to add that we do extensive research all the time, even calling on outside experience and experts in some cases.

We've answered a lot of Economy 7 related questions and we know them well, I myself having answered a ton of them.

It's very rare that we get it wrong, but all three of us are highly confident of our advice in this particular thread. 

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!
TurnipAuthor
Rank 4
June 24, 2023

I give up if firedog you say that you register all that then your setup must be completely diferent if i were you i would question the usage because if you are registering use then as you admit its a diferent circuit then you like me are being charged for nothing.   Also when we do go away the only thing left on on normal is freezer which equates to about three units per day, but still get charged a unit per night.

TurnipAuthor
Rank 4
June 24, 2023

Ok so if i go on a smart meter and it does not show up econ 7 usage then i will hold you responsible for all the years of being charged for no electric being used. At least if i keep my meter i have proof.    Ihave suggested they send someone out completely seal off econ7 and come back in a weel to see if i am correct, they wont do it.

TurnipAuthor
Rank 4
June 24, 2023

Have you ever had a query like mine?     If you are correct then when we are away the bill should reduce considerably if freezer goes on econ 7. There is no system i know of that does this.  I have always said i would like to invent it.

BPLightlog
Super User
Super User
June 24, 2023

Most E7 systems actually work that way - it’s only the wiring circuits that determine what is available off peak. If you’re not using off peak then you’re better off asking to be put in a standard non E7 rate

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}