Integrating future V2H EV charger into soon to be installed residential solar system

[Ampster]

........ I presume the existing Chademo charging stations in the US will not be removed, correct?

I don't have an opinion one way or the other because of the changing landscape. That decision will be made by the charging networks based on the data that they will accumulate as people do more and more DC charging. It has to be expensive to build a DC charging kiosk with two heads and two different charging protocols. I think CCS clearly has market share when it comes to a DC fast charging standard.

I also think the slower J1772 AC charging standard has become ubiquitous, but that will not impact DC charging.

[curro]

I would be more concerned with the long term future of Chademo since Nissan has apparently announced they are moving in the direction of CCS.

Yes, that's another variable to consider. My plan is for this car to get charged primarily at home and not needing charge during the day since it will be used for nearby city driving for the most part. I presume the existing Chademo charging stations in the US will not be removed, correct?

[Ampster]

..........

In terms of an EV already supporting bi-directional charging is the Nissan Leaf. To my reading so far Nissan approves it for warranty purposes also. V2H has been operational in Japan for several years already. It is a proven approach, not experimental.

I would be more concerned with the long term future of Chademo since Nissan has apparently announced they are moving in the direction of CCS.

[curro]

Copy that SunEagle. Thanks for the services and discussion provided in this great site!

[SunEagle]

I am thinking from a warranty perspective and having a well integrated PV system to have V2H functionality, option 2 would be better.

Yesterday I found this thread https://diysolarforum.com/threads/porta ... wer.14970/ which lead me to find additional relevant links such as:

https://www.emobilitysimplified.com/201 ... x-v2h.html

https://www.chademo.com/products/v2x-product/

In the second link above the Wallbox Quasar is touted as a V2G charger and not V2H. The V2H chargers shown such as the Delta V2X are very Japan/Asian-centric and not US.

Again you are equating a working piece of equipment in Asia as compared to what will work (or is allowed) in the USA. Heck we don't even have the IQ8 micro's yet even though other countries do.

Listen if you can find something that will provide a sage V2H circuit then go for it. But asking for info here will probably only get you the run around.

[curro]

I am thinking from a warranty perspective and having a well integrated PV system to have V2H functionality, option 2 would be better.

Yesterday I found this thread https://diysolarforum.com/threads/porta ... wer.14970/ which lead me to find additional relevant links such as:

https://www.emobilitysimplified.com/201 ... x-v2h.html

https://www.chademo.com/products/v2x-product/

In the second link above the Wallbox Quasar is touted as a V2G charger and not V2H. The V2H chargers shown such as the Delta V2X are very Japan/Asian-centric and not US.

[curro]

it sounds like the "Energy Hub" inverter is just a marketing term to describe the functions of a hybrid inverter.
As far as waiting for auto manufacturers to support V2H, I am not holding my breath. It sounds like the classic chicken or egg question.

Ampster, based on my research the Solaredge Energy Hub is a real hardware piece different than the Solaredge inverter model SE10000H-US that my installer is planning to install. At this point my options boil down to this in my view:

Option 1) Go with the planned Solaredge inverter model SE10000H-US (so no premium to pay to my installer as it is already in the contract agreement) and then next year add the Wallbox Quasar bi-directional EV charger (https://wallbox.com/en_catalog/quasar-dc-charger) for something like $4,000 and expect that my installer will work the magic for everything to work well together, meaning when I lose power from the grid and the Nissan Leaf is connected to the EV charger I will get power from the car battery and the lights will come back on and so forth.

Option 2) Pay my installer some premium (hopefully no more than a few hundred dollars) to get the the SolarEdge Energy Hub inverter model SE7600H-US (reference https://www.solaredge.com/us/the-solare ... b-solution) and next year wait for the firmware update so that I can purchase the Solaredge EV charger (https://www.solaredge.com/us/products/e ... ev-charger#/ for around $750 or so) to be bi-directional by that time and fully integrated with the Solaredge SE7600H-US.

In terms of an EV already supporting bi-directional charging is the Nissan Leaf. To my reading so far Nissan approves it for warranty purposes also. V2H has been operational in Japan for several years already. It is a proven approach, not experimental.

[Ampster]

it sounds like the "Energy Hub" inverter is just a marketing term to describe the functions of a hybrid inverter.
As far as waiting for auto manufacturers to support V2H, I am not holding my breath. It sounds like the classic chicken or egg question.

[curro]

This FAQ is leaving me in suspense, please Solaredge make it happen!

https://www.solaredge.com/sites/default/files/energy_hub_and_backup_interface_faqs.pdf

Q: Can we use a bi-directional meter from auto-makers to support
V2H (Vehicle to Home) charging?
A: Not yet. We are waiting for auto manufacturers to support this and it
looks like it is coming soon. This may just be a firmware upgrade—stay
tuned for updates.

Also there are references to "island grid management" in the FAQ:

Q: Will the Energy Hub inverter continue to function and enable grid
outage microgrid islanding even if there is no Internet
communication?
A: Yes, it will go into backup mode without internet.

Q: How does the inverter island itself from the grid? Does it have an
extra piece of equipment like a transfer switch?
A: The Backup Interface functions to separate the home from the grid.

[Ampster]

You missed the "island" part.

Thanks for the clarification. It is much more clear in that context. I agree with your comments that it will take a lot more hardware to form an "island grid".

[curro]

You missed the "island" part.

Thank you solardreamer for answering and your inputs in post # 27. And also thanks to Ampster for your contribution.

I am going to share this thread with my installer to further consult on the subject with him.

[solardreamer]

The EV charging sounds like the the HD Wave inverters with integrated Charging Stations which have been available for several years. I do not understand the phrase, "enabling also grid management during power outages...". There is no grid to manage during a power outages.

You missed the "island" part.

[solardreamer]

Actually this was a point that I did ask my installer and he said that the approach Solaredge is taking with the SE HD Wave inverters accounts for enabling also island grid management during power outages with the solar power recharging the EV battery during this time.

HD Wave is just the internal inverter technology that is used in both standard SE grid-tied only inverters (e.g. SE10000) and the newer hybrid SE Energy Hub inverters. The firmware may be updated in the standard SE grid-tied inverters but they do not have all the necessary hardware components to form island grid and support integration with DC based V2H. You may want to ask your installer to identify all the additional equipment you will need to have island grid and integration with DC based V2H.

[Ampster]

Actually this was a point that I did ask my installer and he said that the approach Solaredge is taking with the SE HD Wave inverters accounts for enabling also island grid management during power outages with the solar power recharging the EV battery during this time.

The EV charging sounds like the the HD Wave inverters with integrated Charging Stations which have been available for several years. I do not understand the phrase, "enabling also grid management during power outages...". There is no grid to manage during a power outages.

[curro]

If you don't care about producing solar power during power outages then standard SE grid-tied inverters should be fine. Otherwise, you may want to consider the SE Energy Hub Inverters, assuming you want to stick with SE, to avoid the cost and complexity of adding on a hybrid inverter later on.

Actually this was a point that I did ask my installer and he said that the approach Solaredge is taking with the SE HD Wave inverters accounts for enabling also island grid management during power outages with the solar power recharging the EV battery during this time.