Overnight Tariff Rationale

TimothyN

Established Member
Joined
Jul 7, 2025
Messages
72
Reaction score
40
Points
24
Location
Biggin Hill
Driving
MGS5
Does anyone understand why you have to prove that you have an EV before they will give you an overnight tariff?

Overnight tariffs are obviously there to balance load, and to shift consumption from daytime to nighttime. Anything they can get, rather than simply waste the electricity, is good for them, right?

And if we choose to use that of electricity for, say, storage heaters, or even to charge a battery or raise a weight, it's still good for them, right?

So why do we have to prove that we have EV's before they will give us the tariff?
 
For E.on I definitely had to give the model and date purchased and I think I may also have had to send V5C (though I've done a lot of that with TfL/ULEZ, so I might be getting confused.)

Octopus also demand details/proof...
 
I don't think they ask questions or send someone round to check, but it is usually in the terms and conditions of particular products so they can cover themselves if the regulator asks why they were giving some customers different rates
 
I guess that's my question. Does the regulator insist that you have an EV before they're allowed to sell you the overnight tariff? That seems daft. I remember Economy 7 being around 50 years before EVs for storage heaters or whatever you wanted.

Anyway, I'll keep running the tumble dryer at midnight, just to show 'em! 🤣
 
Octopus Intelligent Go is restricted to a set of EV's or chargers where they have API compatibility. The difference between Go and Intelligent Go is 8.5p per kWh vs 7p per kWh . . . although Go has fewer hours per night vs Intelligent Go. Signing up for Octopus Intelligent Go does require a "test charge" where they check if the API integration is working.
 
Last edited:
Support us by becoming a Premium Member

Latest MG EVs video

First Look: MG IM5 & IM6 – Premium EV Saloon & SUV Unveiled at Goodwood!
Subscribe to our YouTube channel
Back
Top Bottom