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Rank 2
May 26, 2026
Solved

Economy 7 not working through old RTS meter - will smart meter work in apartment block?

  • May 26, 2026
  • 65 replies
  • 710 views

Hi, we are having a bit of a saga here, about a month ago our water immersion heater that works on the economy 7 stopped working. We’ve had various plumbers and electricians at it and it’s still not working, but one of them suggested that we try and see if our storage heaters (which had been turned off for a while) were working. The storage heaters didn’t work either, so having tested everything he came to the conclusion that the problem must lie with the electricity meter. It’s an old one, probably still the original from when the apartments were built 25/30 years ago I think. The electrician said he was fairly sure that a smart meter would not work here, as we are in an apartment block. Have called OVO today to ask for someone to come and have a look at it. They were very insistent on booking an appointment to install a smart meter, which has duly been made, but will it work? And if, as seems likely, they can’t get a smart meter to work in my flat, what is my next possible course of action? At wits end, any advice from anyone who’s experienced a similar issue would be hugely appreciated

Best answer by ConfusedJim

Updated on 10/06/26 by Ben_OVO

We’ve had a bit of a breakthrough, one of the flats upstairs managed to get the issue fixed (they were eight months without the economy 7 working so no storage heating and no main water tank all winter!). Finally an electrician noticed that there’s no timer clocks in these apartments, so by fitting one to the water heater and storage heaters he managed to get them going again. Thank God for him because about half a dozen electricians have been to a variety of different apartments in the block and none of them were on the right track. 

The man from OVO’s here right now, having heard the story he reckons the combination of the new meter and timer clocks will fix it too.

 

So it seems there was never anything wrong with my neighbours new meter (Dave from OVO just had a look at his too and said yeah looks like it’s all fine) it just needs a small rewire in the flat and fingers crossed we’ll be sorted 

Firedog wrote:

 

Remember we’re talking about two completely different sorts of supply here. If I’ve understood the situation properly, flats in your block were fitted with RTS systems to control their heating (space- and water). Some occupants were unaware of this, or of the fact that RTS was going away. So now the RTS signal has finally been switched off, the problems for those who hadn’t acted to get an alternative set up in time are coming out to bite.

No one could predict what would happen to an individual household’s supply when the signal went off, because it would depend on the electrical installation inside the property. Some might see the heating working just as before; some might see no heating at all, while others might see the heating on all the time. Those who did have heating might well discover that their bills were much higher than before.

An electrician has managed to get the Economy 7 heating working in one flat by means of installing some timeswitches, but that’s no indication that other occupants would benefit from similar arrangements. We just don’t know enough about his system.

A modern meter is smart enough to be able to switch power to heating circuits on at offpeak times and off again at the end of offpeak periods. What might benefit from a timer in this situation is a water immersion heater, which for many households only needs to be on for a couple of hours a day.

65 replies

Rank 2
May 26, 2026

Why smart meter wouldn’t work in the block of flats? It uses mobile phone network (unless you are in Scotland, it’s a bit different there) for sending data. It should be fine! I used to live in the high-rise building, and my smart meter worked perfectly. There could be some issues when you need your gas meter to send data to your electricity meter – sometimes they are too far away from each other. But even in that case there are some solutions found. But, if you are in the high-rise building, I’m sure you won’t have that kind problems! So, yeah, just book the replacement and let them do their job. 

P.S. My guess is that you were on Economy7 tariff, but when RTS was switched off, the cheap part of the tariff stopped working. 

Nukecad
Super User
Super User
May 26, 2026

The meter will work.

Whether it communicates by 3G/4G or by Long Range Radio the new meter should be able to communicate it’s readings to the Data Communications Company (DCC) and OVO picks them up from there.

If for any reason the new meter cannot communicate with DCC then you will have to send in readings to OVO, but that’s no different to what you do now with your non-smart meter.

However if your flat is too far from your meter then your In Home Display may be too far away from it to communicate properly.
It was/is a problem with blocks of flats, but there is something called ALT-HAN that should be able to help with that.

https://althanco.com/what-we-do/

https://althanco.com/how-it-works/

 

I said, Hey - Watts going on.
Rank 2
May 26, 2026

Whether it communicates by 3G/4G...

I just realised that when 3G signal will go off, smart meters will switch to 2G signal. Until their communication hubs (where possible) are replaced for 4G signal. Apparently this is one of the reasons why 2G signal is still being kept. Feels a bit strange to me.

Nukecad
Super User
Super User
May 26, 2026

It's not just smart meters that are keeping 2G going. smart bus stops and smart advertising signs also use, or can fall back on, 2G.

I'm not sure but think I read that some railway infrastructure also still uses 2.G

I said, Hey - Watts going on.
Rank 2
May 26, 2026

Thanks for the replies, they’ve been very helpful! Mobile signal is not great in our flat as we are on a lower floor, and I suppose there’s lots of steel etc in the way, but I bumped into a neighbour this afternoon and they said they have a smart meter through Eon and it works just fine, so fingers crossed all will be well. 
 

So should the economy 7 just start working again as before when the new meter goes in?

Nukecad
Super User
Super User
May 26, 2026

Very roughly - if you are North of a line from the Mersey to the Humber estuaries then you will be on Long Range Radio for smart metering. South of that it's the mobile phone signal.

Things are changing though, so while those sre the preferred methods they are not set in stone like they used to be. There is even smart metering over the internet coming for awkward cases.

Yes a smart meter can handle E7, but it needs to be a dual rate meter, and may need an auxiliary switch for the off-peak circuit.

 I assume you are already on E7 with OVO so that should happen automatically. But you may want to confirm with support that that is what the engineer will be fitting.

I said, Hey - Watts going on.
Rank 2
May 26, 2026

Yes we are an economy 7 tariff and haven’t been told when arranging the appointment that anything would change in that regard.

We have a bit of a development in the story though - another neighbour, also supplied by OVO, has exactly the same issue as us. Their meter box is also the same as ours. I had thought they wouldn’t be old enough to be affected by the RTS switch off though - they’re digital and don’t have any black transmitter box nearby

Abby_OVO
Community Manager
Community Manager
May 27, 2026

Hey ​@ConfusedJim 

 

I’m glad to see a couple of our community members have already stopped by with some helpful advice on this.

 

As they’ve already mentioned, everything should remain the same in terms of the tariff and the meter should work as intended and switch to the peak/off-peak times correctly. If any changes to contract had been required as a result of the meter change, the Support Team would have had to discuss this at the time of booking.

 

If the meter’s in a communal cupboard and you have concerns about whether there’ll be enough space or concerned about access, then it might be worth speaking with facilities management to make sure that they’re aware of the job if there’s anything that might prevent the job being completed. If it’s in a communal area, they may also know if others in the block have had smart meters fitted.

 

The following topic may also be helpful here:

 

 

I’ve lived in flats in various locations across Scotland over 10 years now, all with pretty poor mobile signal and I have to say I’ve had smart meters in all, and never had an issue so it’s not commonly an issue, or as a direct result of it just being in a block of flats.

 

I would be hopeful from what you’ve said here that everything should go ahead smoothly, and the E7 will begin to work again.🤞🏻

 

Do keep us updated with how you get on.

Currently Playing: She's Electric
Rank 2
May 27, 2026

Will do - went to see the gent upstairs who’s had the identical problem, he’s been on to OVO today, he was a bit less relaxed with them about it than me! And they are sending someone to have a look at his meter today. So I will have the benefit of knowing whether it’s been successful for him or not

Nukecad
Super User
Super User
May 27, 2026

Please do let us know how the other gent's experience goes.

(And maybe point him to this forum if he has any questions about his own situation).

I said, Hey - Watts going on.