Forums

Forums
Sustainable Sidetra...
Electricity, Tariff...
Poll for Time of Us...
 
Notifications
Clear all

Which technologies do you have? Which tariff are you on? Multiple answers, please Poll is created on Dec 09, 2025

  
  
  
  
  
  
  
  
  
  
  
  

Poll for Time of Use, tariffs, technology

 
Page 3 / 3
Electricity, Tariffs, Monitoring & Providers
Last Post by Papahuhu 2 hours ago
27 Posts
7 Users
7 Reactions
171 Views
RSS
 Tim441
(@tim441)
Prominent Member Contributor
Joined: 3 years ago
Posts: 369
Topic starter 12/12/2025 6:31 pm  

@jamespa i guess you're on FIT exports? With a high rate.. inflation linked?

If so... highly doubtful you can round trip battery exports to increase income further? Presumably you would retain deemed export but bulk of FIT would have to change to actual exports at Fixed/Flux etc. Net result is likely to be better to stay on FIT?

Unless you're also adding significantly more PV solar?

 

In which case the calcs may be simpler? With no round tripping. 

But would get you cheapest overnight charging of EV and filling battery for daytime usage inc heat pump. 

  • Increasing your self-use of solar 
  • Maximising EV charging at overnight rates. Obviously depends on usage. Say 1000kw/pa. Round figure saving 20p/kwh? 
  • Filled battery at overnight rates for day usage. Say 20kw/day for 100 days? Round figure saving 20p/kwh? 

Saving circa £600/pa? Possibly making ROI taking into account depreciation hard to justify... but....

Potentially adding in part or whole home emergency power supply capability? 

Potential resilience for grid planned outages? e.g. if grid becomes overloaded or interconnectors fail for any reason? Low wind? Russia? Etc!

 

Not necessarily a purely financial decision? Or is it?!


Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
ReplyQuote
 Papahuhu
(@papahuhu)
Trusted Member Member
Joined: 4 months ago
Posts: 35
12/12/2025 6:53 pm  

@toodles 

But that’s the deal with the devil, they are paying a premium to use your battery to balance the grid/makes some profit too. I estimate the balance of advantage is 95 in your favour. But, it’s not for EVs or heat pumps.

The autumn was good too, for those free electricity sessions they paid a flat bonus of a full battery, regardless of whether you did anything at all. It really added up nicely, for doing squat. 



   
ReplyQuote
 Papahuhu
(@papahuhu)
Trusted Member Member
Joined: 4 months ago
Posts: 35
12/12/2025 7:27 pm  

@jamespa 

If you have no nett export then don’t do IOF as it is, by definition, impossible to profit. You need profit to cover the cost of the additional investment for fancy batteries. I’d suggest in your situation you need the cheapest possible battery system, or maybe none at all.  



   
ReplyQuote
Page 3 / 3
Forum Jump:
  Previous Topic
Related Topics
Topic Tags:  Poll (4) , tariffs (3) , technology (1) ,

Currently viewing this topic 2 users ( Tim441, JamesPa ) and 6 guests.

Recently viewed by users: SimonOz 1 hour ago.



Share:

Join Us!

Worth Watching

Latest Posts

Click to access the login or register cheese
x Powerful Protection for WordPress, from Shield Security
This Site Is Protected By
ShieldPRO →