bidirectional

Gumbo

chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.esbnetworks.ie/docs/default-source/publications/quick-user-guide-smart-electric-vehicle-charging-with-vehicle-to-grid-capability.pdf?sfvrsn=e77bcf70_8

http://chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.esbnetworks.ie/docs/default-source/publications/quick-user-guide-smart-electric-vehicle-charging-with-vehicle-to-grid-capability.pdf?sfvrsn=e77bcf70_8

https://electriccarcharger.ie/bidirectional-ev-charging/

CMOTDibbler

https://www.boards.ie/discussion/comment/123103766#Comment_123103766

It's not the same equipment though. For V2H you need a bi-directional car charger whereas the solar battery is going through an inverter. There aren't that many bi-directional chargers around because they need to have an inverter built in (the car charging conversion from AC to DC is usually done in the car). Cars that have V2L also have a small inverter built in (usually around 3kW).

I'm far from an expert on this, but I'd imagine there's a bit more to bi-directional charging than I've said above. Anyone who wants to do it would probably have to replace their charger because even if it was possible to insert an inverter between the charger and the CU, the charger would have to have some sort of switching mechanism in there too. Maybe cars with V2H would have the inverter built in there instead, but my mind is now too boggled to figure out how that would work with your existing charger.

DesperateDan

Yeah I understand that a new charger is required and they cost much more than a traditional one. I am basically willing to lay down even €5k on a replacement charger today if this was possible. But it seems to me the technology is still too young and we need another 3 or 5 years for electricians to understand the regs and for the chargers to hit the market. Just a shame that we have a car sitting in the drive way that can probably do this right now if we plugged it into the right setup!

Gumbo

https://www.boards.ie/discussion/comment/123104155#Comment_123104155

IS10101 was out for consultation with regards to V2H in the last 12 months. It hasn't really been accounted for just yet. It will happen though.

crl84

https://www.boards.ie/discussion/comment/123104155#Comment_123104155

If you really wanted to, I'd imagine getting a battery and having it hooked up to the house (same as in a solar setup), but having the battery charge via V2L from the car would be a possible solution? Effectively replacing the solar panels with the car battery.

CMOTDibbler

https://www.boards.ie/discussion/comment/123104637#Comment_123104637

Yeah, a granny charger connected to the V2L and charging your battery would work I think. Slow enough though, but you could keep it going overnight when there's nothing else leaning on the battery.

There's a lot going on with repurposed batteries from crashed EVs being used for home solar storage. One of the biggest issues is getting the CAN bus in the battery pack to talk to the inverter. Some solutions out there, but still in its infancy and different cars have different communications happening on different pins, so it can be a massive learning curve.

DesperateDan

https://www.boards.ie/discussion/comment/123103817#Comment_123103817

I reached out to them and got this response:

Hi Dan

Thank you for your enquiry.  Unfortunately we do not do bidirectional chargers at this time.

KCross

https://www.boards.ie/discussion/comment/123104155#Comment_123104155

But it seems to me the technology is still too young and we need another 3 or 5 years for electricians to understand the regs and for the chargers to hit the market.

That's it in a nutshell really.

Your car supports this bi-directional feature but its useless to you right now.

I am basically willing to lay down even €5k on a replacement charger today if this was possible.

€5k! Your current pain of having no power is evident there. I feel your pain. Been there and bought the t-shirt!

I vowed to not experience that again after having no power for about a week a few years ago and got a generator setup installed in the house which could be used with an EV if it had V2L (not V2H, V2G). Right now I just use an ICE generator and that runs the majority of the house (water, lights, internet, TV, fridge, freezer etc). Just not higher power devices like heat pump, ovens etc.

Its a small price to pay to keep the house running during these storms, while you wait for bidirectional chargers to become a viable thing.

Like you, I have my own water supply so when you lose power you also lose water which means no toilet flush…. hence never again!

cstagg

Does anyone know if VW ID4 supports V2L?

CMOTDibbler

https://www.boards.ie/discussion/comment/123109596#Comment_123109596

You can use the EV Database to look for that. I find the search function there to be a bit pants, so I just google [make & model of car] EV database and it brings up the pages. I've done this for you for the ID4 Pro. Enjoy.

I won't spoiler it…😁

Gumbo

https://www.boards.ie/discussion/comment/123109596#Comment_123109596

No.

Its been the most common question asked on the Owners Group since the weekend. People are really starting to ask and wise up on V2L.

cstagg

Thanks a million. Great to know when just after driving a 251 home from the garage. Thats what I get for not doing my research.

Gumbo

https://www.boards.ie/discussion/comment/123109848#Comment_123109848

It does support bidirectional charging though if we ever get the regulations sorted and you upgrade the EVSE at home (expensive).

cstagg

should have bought a EV9 🤬😢😜

Gumbo

https://www.boards.ie/discussion/comment/123109944#Comment_123109944

And paid twice the amount!

Would you need it much? do you get frequent power cuts?