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Rank 6
February 16, 2023
Solved

2 meters and two mpans- Can I get a smart meter?

  • February 16, 2023
  • 19 replies
  • 1355 views

I am confused. We bought this 1969 house in 1973 and it has still got the underfloor electric heating. we have 2 meters and two mpans. 

one meter is attached to the consumer unit which supplies all of the lighting and 13 amp sockets and electric shower plus a socket in th airing cupboard into which we could plug the immersion heater if we wanted hot water outside the offpeak times..

The other meter  is supplied via a mechanical timer  and supplies a separate consumer unit which is connected only to all of the underfloor heating in every room and the hot water immersion heater only.

This meter appears to be switching on and off between 1400 and 1800 and  2200and 0800 and was billed when we first moved in as off peak rate B by the eastern electric

board. 

If we went to smart meters would we not want one for the general 24hours cicuit board and a second one for the heating and hot water board replacing the two meters we have installed at present

The current meters were replacements fitted about 10 years ago by EON the electricity supplier at the time. ( I seem to remember it was something about routine replacements after 20 years)

Best answer by M.isterW

Updated on 26/06/25 by Abby_OVO

 

You could investigate the TOU (time of use) tariffs that are available from various energy companies. I can't find one that offers exactly what you have now but there are a number of options available. They normally work on a standard smart meter, charging a lower amount for all your usage in the cheaper periods.

 

To give you an example, we're on a tariff that is cheap from 4am to 7am and from 1pm to 4pm. It's expensive from 4pm to 7pm and we pay the normal variable rate the rest of the time.

If you have a complex meter set up and are interested in getting a smart meter installed, the following topics might have some helpful information:

 

 

19 replies

Tim_OVO
OVO Staff
OVO Forum Legend
April 3, 2023

Hi @confused off peak b and thanks for checking in. 

 

My understanding is that what you’ve described is typical for a 5th port smart meter. E.g the one smart meter handles everything, including a separate circuit connected to the meter’s 5th port which switches on at set times. 

 

Two things I’m not sure of is:

 

  • If/when Economy 10 tariffs will be available for everyone that wants them
  • When polyphase smart meters will be available for everyone that wants them

 

Trials and limited roll outs aside, we’re not there yet. 

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6
Rank 6
April 3, 2023

Thanks Tim

for the information looks like I shall just have to wait for a while  unless you know if I can get to be a part of the trial or limited roll out?

If not I will just carry on as I have been for the past dozen years or so and  input my monthly usage manually until Ovo either chucks me off or decides to release meters to consumers like my self..

Thanks any way.

Regards

Bob 

confused off peak b

Tim_OVO
OVO Staff
OVO Forum Legend
April 4, 2023

You’re already on my list, @confused off peak b - I’ll be in touch as soon as I hear about eco-10 becoming available.

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6
Rank 6
August 30, 2023

Hi Tim,

Any news about economy 10 on a smart meter.

I am still on economy ten with two m pans and two meters until October 13  but the renewal invitation I have received is for two meters with two standing charges and two Peak rates but no off peak rate which is ludicrous. I rang to say they had got the renewal wrong but the girl did not seem to know what I was talking about and said we only have economy 7 rates and peak rates now. Well my time clock is still set to the old Eastern Electricity off peak rate b on one meter feeding the underfloor heating at night and a top up in the afternoon and one meter feeding the rest of the house on full rate 24 hours a day as it has been since 1969.. So I have been waiting for Ovo to release smart meters which can deal with economy 10 on the fifth port and am still waiting.

Do I contact smart metering support  about a meter change to 1 five port smets 2 and they disconnect one Mpan so i only pay one daily charge or do I contact someone in accounts who reads and understands that mpan 1 meter is full rate and mpan 2 is off peak at the economy 10 rate and keep manually reading the meters monthly whilst waiting  for the elusive eco 10 smart meter issue?

Any advice please.

Bob

Rank 6
August 30, 2023

I forgot to add that if the advice is to fit the smart meter on eco7 i would need to overide the  5th terminal every afternoon when the underfloor needed topping up and I do not know if that can be done?

Firedog
Super User
Super User
August 30, 2023

Just to add … we have heard from a couple of users who:

  • were supplied by SSE until recently, when they were migrated to OVO;
  • had 5-pole smart meters installed within the last year or two before the migration;
  •  are set up with E10 tariffs.

Sadly, it hasn’t been problem-free for them. The meters are happily recording peak- and off-peak usage, but OVO are apparently having trouble matching the data they’re getting to the billing system.  

We’re hopeful that the cause of the problem will be identified soon, but it’s not clear whether it lies with the meter itself or its initial configuration. Whatever it is, it’s not currently fixable by remote management.

It seems likely, therefore, that E10 plans won’t be made available to choose until this has been sorted out. And it’s anybody’s guess when that might be.

It’s possible that many more SSE migrants are affected, but we just haven’t heard from them in the forums. This may be, of course, because there’s not much heating being used in the summer months. 

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. |
Newcomer
November 22, 2023

I, a bit like confused off peak b, am an ex SSE customer with what used to be an excellent Off Peak B tariff but now is on a standard tariff and a heating tariff which used to be generous  and work really well heating water and my electric AGA, but now is within about  2.5 p per kwh of the standard.  This Off Peak came through a mechanical time controlled meter.   I have recently had solar installed with a battery so would dearly like to be on a E7 or similar tariff with feed in.

However I have been told that my arrangement is so complicated that I cannot hope for a smart meter, and thus a more suitable tariff, until next spring some time (and I am not confident that it will happen then).  I have a single phase supply which is then split between my standard and off peak B/now heating meters so don’t understand what is so difficult.  Does anyone know why, when my daughter in London is being told that she must have a smart meter, I am being told that I cannot have one? 

Firedog
Super User
Super User
November 22, 2023

I can’t answer your question, but does anything in this detailed article look familiar?
  

 

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. |
Newcomer
November 22, 2023

Thank you, Firedog

It looks like it may be my problem.  I am not sure (and I am distinctly non technical) but think that mine is radio transmitter controlled as I was encouraged to get a smart meter because the Mendip transmitter was about to be switched off (which has  not yet happened).