Which EV ?

MouldyOldDough

If I was to get an EV that I could charge at cheap rate (7.5p) during the night and run my house off during the day - which EV's are capable of doing this at the moment ?

I believe that it is called "bi directional charging" 

Also I understand that you can sell back surplus electricity to the supplier during the day ?

At what rate do they repay you ?

This is Octopus

Stubod

..what...you are going to use your car to provide electric for your house...!!!!!!!.....really!!!!

...sorry, forgot it was half term.....

Ectophile

Stubod said:

..what...you are going to use your car to provide electric for your house...!!!!!!!.....really!!!!

...sorry, forgot it was half term.....

Vehicle-to-home (V2H) is a thing that exists.

But very few cars support it, and very few car chargers support it.  So for the most part, it's just a clever idea that's gone nowhere.

Petriix

There are some examples of people rigging up MG4s with V2L to power their homes. It's not entirely straightforward and there are some important earthing considerations, but it is practicable.

If you want actual V2H then you need a Leaf with ChaDeMo. The bidirectional charging units are expensive so it's typically better to get a dedicated home battery. 

Herzlos

You'd be better investing in a battery system to do that without the car, or even a solar panel system so you can generate the peak electricity and sell back to the grid without having to buy and store it at the cheap rate.

Car_54

So buying at cheap rate, storing it in a battery, and selling it back at peak rate.

If that was practicable AND economical, wouldn’t the energy companies be doing it themselves? And presumably enjoying economies of scale not available to the punter?

northwalesd

Car_54 said:

So buying at cheap rate, storing it in a battery, and selling it back at peak rate.

If that was practicable AND economical, wouldn’t the energy companies be doing it themselves? And presumably enjoying economies of scale not available to the punter?

Like this one, currently in planning?

https://www.dailypost.co.uk/news/north-wales-news/plan-store-green-energy-huge-26721703.amp

MouldyOldDough

@Car_54

Can I use Intelligent Octopus Go with my export tariff?

Of course, Octopus Outgoing (Fixed or Agile) and Smart Export Guarantee (SEG) are both compatible with Intelligent Octopus Go.

You’ll receive a payment for your export (price is dependent on the tariff you choose) and will still be able to benefit from our smart charging schedules

They apparently charge 7.5p per unit for 6 hours a day but pay  15per kWh for every unit you export

Which looks quite promising

Octopus actually says 

"Bi-directional charging tech (in your car and in your charger) will give drivers the opportunity to make extra use of their EV battery while it’s parked at home. You can set a reserve limit (e.g. 30% battery charge) and then smart scheduling takes over - discharging your battery to power your house and selling any extra energy back to the grid while electricity is dirtier and more expensive. Once your battery is down to the reserve limit, it charges up again on cheaper, greener energy ready for the next day!"

MacPingu1986

Car_54 said:

So buying at cheap rate, storing it in a battery, and selling it back at peak rate.

If that was practicable AND economical, wouldn’t the energy companies be doing it themselves? And presumably enjoying economies of scale not available to the punter?

Energy generators and infrastructure funds are already doing *lots* of this - there's large battery sites springing up across the UK.

Home batteries can simply allow individuals to get involved in a (small) piece of the pie.

born_again

https://electroverse.octopus.energy/community/ev-blogs-and-guides/bi-directional-charging

This gives a list of cars that support V2H

https://electriccarguide.co.uk/what-is-vehicle-to-home-v2h/

LightFlare

Not sure if any potential profit from doing that would offset some of the drastic depreciation that some EVs are experiencing