V2G to be approved in Australia 2025

[gdog]

Not sure I'd agree with that

Oh! That’s that idea blown out of the water . I’m sure there must be work arounds but the 70% efficiency may be an issue. I estimate my home battery loose about 10% in battery to AC. If the capabilities were built into wall box. But not implemented until usable is what I was suggesting. I recall a podcast with the founder of Octopus that skirted over this subject

 

[wattmatters]

V2G won't be using the car's inverter.

It will need to be an approved inverter designed and approved for grid connection. Early models will be expensive but frankly it shouldn't cost a lot more than a regular hybrid grid-tied inverter which uses 400 V battery architecture and can talk with the car battery's BMS (the same as it would with a regular home battery, or DC charge stations do now).

We will see more integrated solutions with solar PV and home battery, along the lines of what Sigenergy have with their DC charger. That's capable of bidirectional but not approved as yet for reverse flow.

 

[agough]

Those aren't useable links; you've copied shortened versions.

Apologies replace ***s with ***********

 

[gdog]

V2G won't be using the car's inverter

We'll see. You sound certain do you know something?

Anyway I wouldn't hold my breath if it needs approval before design/manufacture. China would be our one hope of leading the way here as their government are capable of directing manufacture trends

 

[Everest]

Those aren't useable links; you've copied shortened versions.

Apologies replace ** s with ******

well that will fix it then !

 

[Everest]

We'll see. You sound certain do you know something?

For the reasons mentioned in my earlier posting I guess - complexity and efficiency.

It can be done using the car's inverter via V2L charging a home battery. That is great for handling power outages or supplementing home usage when the initial cost of the electricity is free (e.g. from solar charging or charging at times when the power company supplies electricity free or very very low cost). But, from what I have read, it is not commercially viable on a greater scale to go from AC -> DC -> AC -> DC -> AC as you only end up with 50% to 70% of the energy back as usable electricity.

Hence the need for bi-directional DC charging at home.

 

[Coulomb]

We'll see [ Re V2G won't use the car's OBC/inverter ]. You sound certain do you know something?

It still means you get to plug something into the car and it powers the house(s), just that the box the cable is connected to is bigger and more expensive than you might be hoping for.

 

[gdog]

I have no idea how it will pan out with VTH or VTG, but hope it will become possible at an affordable cost in not to distant future