Does the Taycan have Reverse Charging (V2L) capability?

[SteveBruin]

Does the Taycan have Reverse Charging (V2L) capability?
I couldn't find a reliable answer based on a quick search, but it seems like we have the capability to do that, although the function may not have been enabled by Porsche yet?
A friend lost power during a recent storm, having V2L really helped so I'm curious if we can do it too.
Thanks!

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[d00d]

I haven't heard that it does, but would be happy to learn otherwise.
Instead of adding another Powerwall, I'd rather have V2H from a vehicle.
The Cybertruck can do this but in a basic way, it can't share power unless there's an outage, unlike what Enphase is working on.

 

[daveo4EV]

Does the Taycan have Reverse Charging (V2L) capability?
I couldn't find a reliable answer based on a quick search, but it seems like we have the capability to do that, although the function may not have been enabled by Porsche yet?
A friend lost power during a recent storm, having V2L really helped so I'm curious if we can do it too.
Thanks!

no!

Porsche has rudimentary problems getting power to flow "into" the battery - getting it out via the the charge port is beyond their engineering capabilities - also the major issue with any sort of "power my home" technology (generator, batteries, solar, EV) is that you need to have a cut-off switch to isolate your home from the grid when you are providing your own power source during a grid outage…

all/most/many utilities do not want your power source powering the grid and electrocuting their line workers while they are working to repair the outage - or in the case of a planned-power-shut-off they don't want your home powering their equipment and then potentially sparking a fire…

so the challenge with _ANY_ sort of self powered system (again regardless of power source) is the integration of a cut-off/isolation switch so that your power source does not flow back through your meter and on to the shared grid for your neighborhood…

99.9% of residential homes in North America do not have this sort of cut-off switch - there are two types - manual and automatic - manual is self explanatory - but if you have your own power source you can not use it until you have "thrown" the switch - if it's an auto-cutoff switch it requires integration with a controller than assures the cut-off switch is thrown before invoking any of the potential power sources you may have in your home (battery, generator, solar, wind, hydro, EV)

if your EV were to be a "power source" it would require Porsche to integrate with your auto-cut off switch so that the switch is in control of telling your EV when to provide power - the logical place for this "smarts" is the EVSE/EV charger - since it has the cord that would provide the power to the home - so you need an integrated EVSE with vehicle2home integration - like the FordPRo EVSE - and then the EVSE needs to integrate with your home's electrical panel to assure no power will back-flow onto the grid while your home is being powered by your EV…

there are many moving parts and few if any adopted standards for this type of system - so while there are examples of such systems - they are bespoke - vertically integrated - the ford system only works with all ford components - no mixing and match…with various parts from different vendors…

but the major hurdle is getting an electrician to rework your home's electrical panel to have a cut off switch - so that you don't power neighborhood with your personal power source during an outage…until that problem is solved - you can't "self power" because there is no flow control on your meter - so any power you provide will be sucked up by your neighbor's homes along with your home - most likely overwhelming your power source and causing a brown out, shorting out, and potentially damaging equipment on the grid, or grid employees…

a secondary consideration is reworking your home's breaker panel to have circuits that will be powered/backed-up and circuits that will not be powered or backed up - in my home for example all 3 of my EVSE's are not part of the battery back up system - I made this choice so that if power goes out while I'm asleep/away-from-home that an EV charging will not suck my batteries dry while I"m not there to attend to the outage…there really is no point in having my 84.3 kWh 2020 Taycan Turbo suck my 28 kWh's worth of batteries to empty during a power outage - I have the batteries to back up the home, not to provide power for my EV's…all this means is that the electricians work is some what extensive to rework a home for grid-outage scenario…it's not terrible, it's not extensive, it's straight forward, but it's still some work, some planning, and a bit of labor and materials - and beyond the scope of a DIY project, and also means there is no such thing as a normal home in North American that already has all this planning/equipment in place - it's a rework of your home's electrical system - pure and simple.

you need to isolate your home from the grid, then you can think about having your own power source in an outage…that's step one.

there is additional complexity if you also have solar and wish your solar system to be "online" to power your home during an outage - basically your power system has to provide somewhere for the excess solar power to go if solar is over producing for your current demand - if there is no place for this excess solar to go - your "controller" has to be smart enough to turn off your solar inverters - basically solar requires a Power sink to absorb it's power - the power sink is either your home's demand - or your home's demand + battery to absorb the excess - if there is no place to absorb the current solar production you have to shut down the panels (no problem they all support this) while there is nothing to consume the panel's production…

so all of this requires a "controller" to manage - power flow to the home, solar power flow to the home or batteries - power flow into/out of the batteries, and management of a cut-off switch to isolate the home from the grid during an outage so that None of your power "escapes" on the grid causing problems with the grid during an outage…

this is straight forward engineering, and there are numerous examples of "off-grid" hybrid systems that do all this - but integration with a vehicle requires the co-operation of the vehicle manufacturer and is quite a bit of software integration - and we all know Porsche's strength is software…and playing nice with others.

but no Porsche does not support this functionality with any product currently shipping in North America.

 

[SteveBruin]

no!

Porsche has rudimentary problems getting power to flow "into" the battery - getting it out via the the charge port is beyond their engineering capabilities - also the major issue with any sort of "power my home" technology (generator, batteries, solar, EV) is that you need to have a cut-off switch to isolate your home from the grid when you are providing your own power source during a grid outage…

all/most/many utilities do not want your power source powering the grid and electrocuting their line workers while they are working to repair the outage - or in the case of a planned-power-shut-off they don't want your home powering their equipment and then potentially sparking a fire…

so the challenge with _ANY_ sort of self powered system (again regardless of power source) is the integration of a cut-off/isolation switch so that your power source does not flow back through your meter and on to the shared grid for your neighborhood…

99.9% of residential homes in North America do not have this sort of cut-off switch - there are two types - manual and automatic - manual is self explanatory - but if you have your own power source you can not use it until you have "thrown" the switch - if it's an auto-cutoff switch it requires integration with a controller than assures the cut-off switch is thrown before invoking any of the potential power sources you may have in your home (battery, generator, solar, wind, hydro, EV)

if your EV were to be a "power source" it would require Porsche to integrate with your auto-cut off switch so that the switch is in control of telling your EV when to provide power - the logical place for this "smarts" is the EVSE/EV charger - since it has the cord that would provide the power to the home - so you need an integrated EVSE with vehicle2home integration - like the FordPRo EVSE - and then the EVSE needs to integrate with your home's electrical panel to assure no power will back-flow onto the grid while your home is being powered by your EV…

there are many moving parts and few if any adopted standards for this type of system - so while there are examples of such systems - they are bespoke - vertically integrated - the ford system only works with all ford components - no mixing and match…with various parts from different vendors…

but the major hurdle is getting an electrician to rework your home's electrical panel to have a cut off switch - so that you don't power neighborhood with your personal power source during an outage…until that problem is solved - you can't "self power" because there is no flow control on your meter - so any power you provide will be sucked up by your neighbor's homes along with your home - most likely overwhelming your power source and causing a brown out, shorting out, and potentially damaging equipment on the grid, or grid employees…

you need to isolate your home from the grid, then you can think about having your own power source in an outage…that's step one.

there is additional complexity if you also have solar and wish your solar system to be "online" to power your home during an outage - basically your power system has to provide somewhere for the excess solar power to go if solar is over producing for your current demand - if there is no place for this excess solar to go - your "controller" has to be smart enough to turn off your solar inverters - basically solar requires a Power sink to absorb it's power - the power sink is either your home's demand - or your home's demand + battery to absorb the excess - if there is no place to absorb the current solar production you have to shut down the panels (no problem they all support this) while there is nothing to consume the panel's production…

so all of this requires a "controller" to manage - power flow to the home, solar power flow to the home or batteries - power flow into/out of the batteries, and management of a cut-off switch to isolate the home from the grid during an outage so that None of your power "escapes" on the grid causing problems with the grid during an outage…

this is straight forward engineering, and there are numerous examples of "off-grid" hybrid systems that do all this - but integration with a vehicle requires the co-operation of the vehicle manufacturer and is quite a bit of software integration - and we all know Porsche's strength is software…and playing nice with others.

but no Porsche does not support this functionality with any product currently shipping in North America.

Thank you! that was very detailed and easy to understand. I appreciate your explanation!!

 

[W1NGE]

Does the Taycan have Reverse Charging (V2L) capability?
I couldn't find a reliable answer based on a quick search, but it seems like we have the capability to do that, although the function may not have been enabled by Porsche yet?
A friend lost power during a recent storm, having V2L really helped so I'm curious if we can do it too.
Thanks!

Nope it doesn't.

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