Skip to main content
Rank 5
April 17, 2026
Solved

New heating system but struggling to get the right tariff

  • April 17, 2026
  • 131 replies
  • 1024 views

Hi Everyone,

Thank you to all those who helped last year regarding Air Source heat pump as my oil boiler went down and i was having trouble with my housing association about when it was going to be installed etc. That was in May last year.

 

Fast forward to this year we now have a heating system ....its Storage heating and I spoke to OVO regarding all this being changed in January this year apparently yes then at the last hour it was no. Ok so I tried to look for a different company that do Economy 7 tariff.

 

Found one but now OVO don't want to let me go due to a huge bill which I have due to it being wintertime and having to use electric heaters due to no heating system can anyone advise  me what to do obviously I didn't really want to leave but ....its a case of having to but then if OVO did Economy 7 or something similar I wouldn't have to.

Best answer by BPLightlog

​... will Viv1966 be able to get a duel tariff like Economy 7 with the meter setup they have ?
  

If you’ve been advised that we can’t switch you to Economy 7 (which is generally the case) 
 

We can’t tell whether this meter is capable of switching an offpeak circuit on and off. Even if it did have the internal switch necessary, there would have to be an external contactor to do the actual power control.

It seems that the magic use-excess-solar-generation-to-charge-heaters system only works if the heaters are wired to a constant circuit (i.e. not having the charging bit separate from the control bit so charging only happens during offpeak hours). Again, we can’t tell whether this is Viv’s arrangement. It involves installing some extra bits and bobs including a CT clamp, all included in the optional Solar Box.

 

 

As ​@Firedog suggests, a separate supply is not needed for these 

So that should mean that a traditional 4 terminal smart meter should work with these heaters.

The balance would then be how much energy is needed during the day for other appliances and how the units are connected 

 

131 replies

Viv1966Author
Rank 5
April 24, 2026

@juliamc yes i think thats the best thing to do, i can text him and he is quite approachable....so what i will do is contact him.  Thats a thought it could be where the boiler was but don't remember seeing it…i have read that sometimes they are on the roof?! Seems a little odd if you are supposed to read them.   By the way i only have one water tank not two as well. I will let you know what i find out especially as i now know i have to leave Ovo but i can carry on talking to you all for advice....i thought that would have to stop! 

 

 

Viv1966Author
Rank 5
April 24, 2026

@Peter E ​@Nukecad ​@BPLightlog  i knew something was afoot regarding Storage heating....but its not a fossil fuel heating is  it?  I suppose the government want everyone on Air Source don't they?

BPLightlog
Super User
Super User
April 24, 2026

What exactly is this? Might it have the Solar Box inside? ​@Viv1966 said it has an LCD with figures inside. Can you post a photo  of the inside.

There is some wording on this box which mentions the loft … might be worth having a closer look 

 

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Viv1966Author
Rank 5
April 24, 2026

@juliamc  sorry just seen your message i will take a photo of inside too.

BPLightlog
Super User
Super User
April 24, 2026

@Peter E ​@Nukecad ​@BPLightlog  i knew something was afoot regarding Storage heating....but its not a fossil fuel heating is  it?  I suppose the government want everyone on Air Source don't they?

It’s not about fossil fuels as such but more storage heaters are designed to build up their heat with overnight electricity which isn’t always the best for low emissions.

There will be what are called Tou (time of use) tariffs which do supply lower cost electricity at certain times, it’s just that those times won’t necessarily correspond to nighttime use

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Peter E
Super User
Super User
April 24, 2026

@Peter E ​@Nukecad ​@BPLightlog  i knew something was afoot regarding Storage heating....but its not a fossil fuel heating is  it?  I suppose the government want everyone on Air Source don't they?

It's not fossil fuel heating but it is inefficient compared to a heat pump. With a storage heater you get the same amount of heat out as you put in with electricity. 

 

With a heat pump you can get three or four times as much heat out for the same amount of electricity. It's complicated but moving heat from the outside to the inside (sounds impossible but it's true) is easier that generating the heat directly. So it's basically a third or a quarter of the price in electricity for the same amount of heat. I'll restrain my inner physicist and stop there.

 

Peter

 

 

 

Reducing my yearly fossil fuel usage with an EV (-900 litres petrol), A2AHP (-8,700 kWh gas) and Timed Immersion heater (-1,500 kWh gas)
juliamc
Rank 20
Rank 20
April 24, 2026

Ah, I was thinking of the electric shower and your new electric water heater. No it’s absolutely not a requirement to be with OVO to use this forum. I’m with Octopus as they have a smart tariff which I use as we have an electric car. We also have solar and battery, and a heat pump, which was a big improvement on the previous heating which was gas powered warm air. 

Firedog
Super User
Super User
April 24, 2026

… you can't move to E7 if you are on a single rate ... due to the fact that E7 will cease to exist in 2030
  

The imminent demise of Economy 7 has been mentioned on occasion ever since I first became personally involved ten years ago. The source you quote here is one of two I found, interestingly both from commercial enterprises keen to consult with and advise housing providers at vast expense on how to proceed when the properties they own no longer have any affordable heating option. I haven’t yet found any authoritative basis for the pronouncement, but I’d expect there to be one, from the energy suppliers’ and networks’ industry bodies if no-one else. ‘By 2030’ is only three years away, so well within medium-term budgeting scopes. 

Where can I direct my landlady to find official notification that steps will have to be taken within a year or two to ensure my house remains both inhabitable and affordable? 

  

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. |
Viv1966Author
Rank 5
April 24, 2026

@juliamc Octopus is where i am going too they do have an Economy 7 tarrif Snug Octopud i believe its called but not in use at 6he moment due to the war. So have suggested a variable tarriff.

Peter E
Super User
Super User
April 24, 2026

You're right ​@Firedog in that there appears to be no official line on terminating E7 and not from any Ofgem source where you would expect it to be originating from. I suspect that it is the situation that you are in along with millions of others that there is no equivalent tariff that you could move to without being penalised.

 

I suspect, however, suppliers will eventually say they are not prepared to take on new customers for E7 and if you want to switch then you have to choose another tariff. The other thing that may happen is that they will continue to push the night and day rate closer together until there is no significant difference as they have been doing for years if not a decade and that may be the way they effectively abolish it.

 

Peter 

Reducing my yearly fossil fuel usage with an EV (-900 litres petrol), A2AHP (-8,700 kWh gas) and Timed Immersion heater (-1,500 kWh gas)