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This came up on another thread, and I'm interested to learn a bit more about what's needed to enable an EV to power a house. I assume this is at least technically possible since the necessary elements exist: Chademo cars and the new Hyundai/Kia EVs can output power. Solar panel owners can use their solar electricity to power their house.

So what should I be thinking about in terms of the stuff I would need to do and/or buy to be able to run my house using the car's battery?

My use scenario is along the lines of the car coming home around 6:30 and being used to power the house through the remainder of the peak period. Then, later in the evening the car would charge itself up for the next day and possibly have some spare energy to power the toaster and kettle in the morning.
 

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Search Vehicle to Grid or V2G.

Octopus energy and other suppliers are offering free trials to those living in qualifying areas. Its part of the grids future plan to use the EV's sitting with a charged battery to smooth out the demand on the grid.
 

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Very much bleeding-edge tech right now though. Issues like free charging (at Tesco and maybe your workplace) and even tax liability springs to mind!
 

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This came up on another thread, and I'm interested to learn a bit more about what's needed to enable an EV to power a house. I assume this is at least technically possible since the necessary elements exist: Chademo cars and the new Hyundai/Kia EVs can output power. Solar panel owners can use their solar electricity to power their house.

So what should I be thinking about in terms of the stuff I would need to do and/or buy to be able to run my house using the car's battery?

My use scenario is along the lines of the car coming home around 6:30 and being used to power the house through the remainder of the peak period. Then, later in the evening the car would charge itself up for the next day and possibly have some spare energy to power the toaster and kettle in the morning.
Hi, no doubt your query is genuine and not some kind of trolling exercise. So please take the following in good faith.
If you are connecting power generation equipment to the grid, there are strict legal, certification and ethical considerations. Quite apart from the risk of Mal synchronisation blowing up your equipment or your neighbours, there is a risk that an electricity worker could be killed by your energisation of a line that should have been volt free. That is part of the reason why ordinary grid connected solar will not function when the mains supply is lost.
So the question is, are you technically competent and fully informed including legally as to what is required. If no, leave it alone.
 

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Hi, no doubt your query is genuine and not some kind of trolling exercise. So please take the following in good faith.
If you are connecting power generation equipment to the grid, there are strict legal, certification and ethical considerations. Quite apart from the risk of Mal synchronisation blowing up your equipment or your neighbours, there is a risk that an electricity worker could be killed by your energisation of a line that should have been volt free. That is part of the reason why ordinary grid connected solar will not function when the mains supply is lost.
So the question is, are you technically competent and fully informed including legally as to what is required. If no, leave it alone.
Here's a link which explains the G59 Regulations
What is G59 Testing and Regulations - shentongroup
 

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Don't you just need a big Grid Tie Inverter that has the correct DC input voltage? So with your marigolds on butcher directly into the car's battery DC output with a suitable connector for plugging into the GTI? Obviously not for leased cars etc, in fact don't tell anyone, lol.
 

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Search Vehicle to Grid or V2G.

Octopus energy and other suppliers are offering free trials to those living in qualifying areas. Its part of the grids future plan to use the EV's sitting with a charged battery to smooth out the demand on the grid.
V2H I can understand but V2G??? Can't see the point of being that charitable.
 

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Discussion Starter #10
Hi, no doubt your query is genuine and not some kind of trolling exercise. So please take the following in good faith.
If you are connecting power generation equipment to the grid, there are strict legal, certification and ethical considerations. Quite apart from the risk of Mal synchronisation blowing up your equipment or your neighbours, there is a risk that an electricity worker could be killed by your energisation of a line that should have been volt free. That is part of the reason why ordinary grid connected solar will not function when the mains supply is lost.
So the question is, are you technically competent and fully informed including legally as to what is required. If no, leave it alone.
Haha, I've assumed people know more about me than they do and should have given more context in my post, sorry for that. I'm not trolling, it's a genuine question. But if you know me, you would also know that I have zero interest or capability in doing any required work myself. I'm more interested to know in general terms what kind of equipment is required (I was nodding along to @Scrooge on inverters for example, because I believe they're used to feed solar power to a house or the grid). Although if @SCanfer comment about "bleeding edge" is correct then I'm going to need some sort of specialised contractor for this?
 

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Haha, I've assumed people know more about me than they do and should have given more context in my post, sorry for that. I'm not trolling, it's a genuine question. But if you know me, you would also know that I have zero interest or capability in doing any required work myself. I'm more interested to know in general terms what kind of equipment is required (I was nodding along to @Scrooge on inverters for example, because I believe they're used to feed solar power to a house or the grid). Although if @SCanfer comment about "bleeding edge" is correct then I'm going to need some sort of specialised contractor for this?
Assuming you are in the UK, the ONLY car that will work with the equipment which has been certified is the LEAF. (possibly also the Nissan CHADEMO equipped van). And its Vehicle To Grid

Do you have a LEAF?
 

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I understand the new Kia's/ioniqs output only 3kW presumably just via a normal 3 pin plug socket.
Useful for backup running essential things if you had a power cut I suppose (maybe central heating pump/fridges / TVs/ computers etc?
In fact I sometimes just use a 180W inverter from the car, via an extension lead to power TV, router, some led lamps, charge laptops etc, if we have a power cut.
The costs involved though at present of a full vehicle to home setup probably don't make a lot of sense though.
 

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This came up on another thread, and I'm interested to learn a bit more about what's needed to enable an EV to power a house. So what should I be thinking about in terms of the stuff I would need to do and/or buy to be able to run my house using the car's battery?My use scenario is along the lines of the car coming home around 6:30 and being used to power the house through the remainder of the peak period. Then, later in the evening the car would charge itself up for the next day and possibly have some spare energy to power the toaster and kettle in the morning.
There are two different themes going on here. One is the car linked to the grid for grid balancing. The other is a desire to run the car owners house from its charged battery at specific times.

The OP has set out that he seeks the second solution. He wants to run the house directly from the car power store. That is similar to people using a petrol generator to run a house during power outages. And the same rules and equipment required are similar. In blunt terms, the essential point is that when home power, either from a generator or a car battery, is connected to the house then the physical link to the grid must be isolated. For obvious reasons.

There are a few solutions for the use of home generation to run a home that have been around for many years and they would work in the same way for a storage or car battery source. They all have an interlock device to physically switch the power supply between either source and isolate the one not in use. Not a cheap option and also must be installed by a qualified electrician.

Power Transfer Switches | Just Generators

The problem here is that most cars cannot presently transfer power both ways. Meaning that the option is not available for most people yet.
 

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There are two different themes going on here. One is the car linked to the grid for grid balancing. The other is a desire to run the car owners house from its charged battery at specific times.

The OP has set out that he seeks the second solution. He wants to run the house directly from the car power store. That is similar to people using a petrol generator to run a house during power outages. And the same rules and equipment required are similar. In blunt terms, the essential point is that when home power, either from a generator or a car battery, is connected to the house then the physical link to the grid must be isolated. For obvious reasons.

There are a few solutions for the use of home generation to run a home that have been around for many years and they would work in the same way for a storage or car battery source. They all have an interlock device to physically switch the power supply between either source and isolate the one not in use. Not a cheap option and also must be installed by a qualified electrician.

Power Transfer Switches | Just Generators

The problem here is that most cars cannot presently transfer power both ways. Meaning that the option is not available for most people yet.
The ONLY practical and LEGAL system at the moment are the sponsored pilot programmes with the CHADEMO Nisan Leaf. That is all the OP needs to know.
CCS doesnt even have a certified protocol. And of course no equipment exists.
 

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I've often wondered about the impact on EV battery life if it's regularly used in this way. The batteries deteriorate with the number of charge/discharge cycles and especially with deep discharging.
 

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V2H I can understand but V2G??? Can't see the point of being that charitable.
If you were being paid £1+ per kWh exported it might get interesting. This already happens on Octopus Agile Outgoing tariff, when the grid is stretched.
 

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For myself, I could hack into the triplets battery DC output for the GTI which is in turn connected to the house [sub] consumer unit. The Ohme will charge the triplet when electricity is cheap.

Meantime, take an angle grinder to the triplet and remove as much as possible into a mini-skip strapping the remainder to the garage wall with a home-made Tesla Powerwall badge :ROFLMAO: :ROFLMAO: :ROFLMAO:
 

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I'm not sure we've all properly considered and addressed the OP's original post. He wants to be able to power his house each evening through the peak period, using the energy in his car's battery instead of buying from the grid. Then later he wants his car to recharge from the grid, at the cheaper overnight rates.

This is precisely what I currently use my Tesla Powerwall for. It's connected to the house, and the grid. The Powerwall Gateway has automatic isolation from the grid in the event of a power cut, so that my solar panels and/or my battery can continue to power the house through the power cut. Effectively, my house has a UPS!

It's understandable that Harry_Zoe wants to achieve something similar using the battery in his car, and it's quite feasible, but as several have pointed out, it's not currently possible because most cars can't output their battery's energy, only the Chademo standard supports the concept so far. Also a grid-tied inverter would need to be installed to provide AC electricity at the necessary voltage and in-phase with the grid. Solar inverters do exactly this, but I'm not sure that a solar inverter could be used for this purpose, or whether a V2G inverter would need to be designed differently. I believe the trials with the Nissan Leaf/Chademo and Octopus Energy use a customised home chargepoint, with a suitable inverter built-in. I'm not sure if there's anything on the market yet that would do the same for CCS, when that standard is eventually updated to allow V2G output.
 

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The OP is probably talking about me mentioning the Wallbox Quasar in another thread.
The only drawback is that it's still a bit expensive at retail, but I'm currently considering it as part of a package.

The Nissan Leaf, the e-NV200 and the Outlander PHEV are compatible.

This technology has future, because it's cheaper than home batteries.






Also, Nissan is already working on this for years already.

 

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Discussion Starter #20
I'm not sure we've all properly considered and addressed the OP's original post. He wants to be able to power his house each evening through the peak period, using the energy in his car's battery instead of buying from the grid. Then later he wants his car to recharge from the grid, at the cheaper overnight rates.

This is precisely what I currently use my Tesla Powerwall for. It's connected to the house, and the grid. The Powerwall Gateway has automatic isolation from the grid in the event of a power cut, so that my solar panels and/or my battery can continue to power the house through the power cut. Effectively, my house has a UPS!

It's understandable that Harry_Zoe wants to achieve something similar using the battery in his car, and it's quite feasible, but as several have pointed out, it's not currently possible because most cars can't output their battery's energy, only the Chademo standard supports the concept so far. Also a grid-tied inverter would need to be installed to provide AC electricity at the necessary voltage and in-phase with the grid. Solar inverters do exactly this, but I'm not sure that a solar inverter could be used for this purpose, or whether a V2G inverter would need to be designed differently. I believe the trials with the Nissan Leaf/Chademo and Octopus Energy use a customised home chargepoint, with a suitable inverter built-in. I'm not sure if there's anything on the market yet that would do the same for CCS, when that standard is eventually updated to allow V2G output.
Thanks to @MudflatsRichard and @Hitstirrer who've got the gist of my poorly-worded request :)

I see better now what's needed and where what I'm after deviates from the solutions that already enable the power wall/inverter setup that we're probably more familiar with. The reason I posted this as a "V2H" thread rather than a "V2G" thread is because I'd rather use my spare battery power in a way that suits me rather being tied in (a la Octopus V2G) to their terms and conditions and yet more app-faffery in my life.

In terms of a rough and ready idea for what might be possible, how does this look:
1. I own a Kia EV6 or Ioniq 5 with their V2L capability.
2. I run a suitable cable back from the driveway into the house
3. I install a switch (i.e. like Hitstirrer mentions above) to let me go between mains and local (i.e. the car) on the supply side

So when the car gets home, just plug it in as the house supply, go into the house and after I've kissed the wife hello, switch the house over so the car is the power supplier. That seems to avoid the "synch with the grid" requirement and doesn't need an extra inverter because (I assume) the V2L capability of the cars mentioned outputs 240V AC.

I think those cars can only do 3kW, so nothing big would run but I could have lights, fridge, TV and gas central heating running so the house would be liveable while using the car battery for a few hours.

If something like this is possible, it seems me that it's the cheapest way for me to be able to off-grid in a limited way and for short periods since I don't need another battery, inverter, export capability, etc. and just use the car battery and a minimum of extra kit to "cut the cord"?
 
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