Tesla launches Powershare - Bi Directional Charging

MeteredOut

Netexporter said:

 I gather the whole truck didn't look too pretty, either.

Fixed that for you

70sbudgie

Netexporter said:

Ectophile said:

It's not that exciting - they aren't actually selling the Cybertruck in the UK.

It might generally speed up the adoption of V2H, though. The irony is that Chademo was designed as a bi-directional system but has now become the Betamax of charging.

I found this (about Chademo and charging Comms) when I did some research several years ago, prior to installing PV. Being an eternal optimist, I decided not to install domestic fixed batteries and anticipated a resurgence in Chademo charging.

I am now revisiting that decision due to the lack of progress in V2H over the last 4 or so years.

michaels

70sbudgie said:

Netexporter said:

Ectophile said:

It's not that exciting - they aren't actually selling the Cybertruck in the UK.

It might generally speed up the adoption of V2H, though. The irony is that Chademo was designed as a bi-directional system but has now become the Betamax of charging.

I found this (about Chademo and charging Comms) when I did some research several years ago, prior to installing PV. Being an eternal optimist, I decided not to install domestic fixed batteries and anticipated a resurgence in Chademo charging.

I am now revisiting that decision due to the lack of progress in V2H over the last 4 or so years.

VW have launched (so far just in Germany) V2H that is compatible with all their 77kwh cars.  I suspect just a little bit more patience is needed.  Not sure if the general consumer will realise how valuable v2h is but it can easily save £1k pa so could be a very short pay back time.

Netexporter

 it can easily save £1k pa so could be a very short pay back time.

And makes use of a depreciating asset that sits on the drive, 95% of the time.

Qyburn

Do these V2H systems need DNO approval?

Netexporter

Qyburn said:

Do these V2H systems need DNO approval?

I don't think so, because you are only drawing off what the house needs, up to the limit of the charger, and not exporting. V2G presumably would require permission.

1961Nick

Netexporter said:

Qyburn said:

Do these V2H systems need DNO approval?

I don't think so, because you are only drawing off what the house needs, up to the limit of the charger, and not exporting. V2G presumably would require permission.

The problem with some DNOs is that they look at the potential export - say an 8kWh V2H load was switched off, it would take the vehicle a few seconds to react during which time energy would go to the grid. 

Qyburn

1961Nick said:

Netexporter said:

Qyburn said:

Do these V2H systems need DNO approval?

I don't think so, because you are only drawing off what the house needs, up to the limit of the charger, and not exporting. V2G presumably would require permission.

The problem with some DNOs is that they look at the potential export - say an 8kWh V2H load was switched off, it would take the vehicle a few seconds to react during which time energy would go to the grid. 

That's my understanding. Our application including a Tesla Powerwall was knocked back due to the voltage rise that would result from it exportibg at 5kW. We had to remain within that limit even though the battery would be configured not to export. That was part of an application for solar an battery so DNO approval will be needed to get our export payments.

The question really with a bidirectional charger only, not installed as part of a generation project, is do you have to ask them in the first place?

Reed_Richards

You can bet your DNO would say you do.

Martyn1981

Qyburn said:

Do these V2H systems need DNO approval?

It might. We got our application for V2G denied by the DNO, as we were at export limit. The kit at the time had not been certified to cap export at a lower level, or zero.

But V2H systems will presumably need DNO approval, the same as a home battery, even if export is zero. So if a zero export application is required for a home batt (I think that's correct), then logically the same would apply to V2H, to ensure that the kit involved is certified/approved by the DNO to prevent export, even if something goes wrong. My logic here is that the V2H is interacting with the house, which in turn is grid-tied.

I'm guessing that V2L doesn't need approval, since it's powering a device or three, not grid-tied?