In Davos, Nissan LEAF Is Giving Visitors a Warm Glow

JAN 25 2014 BY MARK KANE 11

LEAF-to-Home in action

LEAF-to-Home in action

Nissan is asking on its blog:

“What could be better than a cup of hot chocolate as the temperatures drop close to freezing… especially when it’s free? How about a free cup of hot chocolate made without needing to draw power from the grid at peak times?”

Free cup of hot chocolate is swell, but this is not the point Nissan is trying to make..

Nissan is demonstrating its LEAF-to-Home system at the 2014 World Economic Forum in Davos, Switzerland.  The system can utilize a 6 kW bi-directional CHAdeMO charger to charge the LEAF or to draw energy from the battery pack to power some electrical device.

“Car-powered hot chocolate is fun, but there’s a serious side to the LEAF-to-home technology. By incorporating a special Power Control System into a household’s electrical distribution board, a LEAF can not only recharge its batteries in the usual way, but can also use the stored energy to provide power for the house.”

Powering a whole house would be sweet, especially if Nissan will someday equip the LEAF with a higher capacity battery pack.  If Nissan did this, then EV owners would get emergency supply during a power outage or blackout, reduce consumption of mains electricity during peak times and likely see faster charging of the LEAF.

But for today, let’s go for the free cup of hot chocolate.

EVs as power sources for living

EVs as power sources for living

Categories: Nissan


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11 Comments on "In Davos, Nissan LEAF Is Giving Visitors a Warm Glow"

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It’s useful to some people with unreliable power right now, but Nissan needs a battery with a longer life for this to be a real winner.

Dan Frederiksen
Power outages must be so rare that it wouldn’t matter to the battery life at all. Even if it was an hour every single day it would be largely insignificant wear. But in most cases it’s a fairly elaborate setup for little use because you need a special charger and the house needs to be rigged to disconnect from mains during a power outages and it must all be coordinated. It can be done but it’s a fairly elaborate system for little gain unless you live in a very unstable location. We haven’t had a power outage here in 10 years. A stand alone portable system that you can also use for camping might be interesting where you just run an extension cord from the car into the house for ad hoc power. Such a system could be done very inexpensively and would be cool in a power outage. This could be done as a cheap third party device I’d imagine. Like the cheap inverters on ebay but with a chademo plug. Sure that means you have to manually connect it during the blackout but how often do you have the car connected to chademo so it would be manual… Read more »

I wonder if this product was designed in response to the rolling blackouts in Japan after the Fukushima disaster …


It certainly gave them a push.
The real champions for this sort of use are the PHEV’s though, as a couple of gallons of fuel have a heck of a lot of energy in them.
The Mitsubishi Outlander PHEV can provide some serious emergency power generation, and power tools can also be run from the vehicle without having to carry a separate generator.
Great for the outdoorsman.

Suprise Cat

Mitsubishi had a mobile Chademo power box first, but it is limited to 1500 W output only and no fixed house installation.
The Japan version of the Outlander PHEV had it already build in in the car, there are 110 V AC plugs in the trunk.


I don’t fully follow you.
Does that mean that people in the US where it is most likely to be useful will not be able to use the Outlander PHEV for emergency generation for their houses, or for outdoor power tools?
How about in Europe?

Big Solar

I wonder when Tesla is going to offer a vehicle to grid charger???

Suprise Cat

That will blow up the free SuperChargers….supply your entire street with free electricity…


I wish the Volt could be used as an emergency generator. Can it be that difficult to modify the existing equipment to do this?

Christine Andrews

The real potential is to help stabilize and store renewable energy and to help reduce peak demand. Here on Maui, our utility is effectively blocking additional rooftop solar around (faux) grid stability issues. We also have a lot of excess wind power. Our peak deman curve is pretty short and steep. V2G or V2H would facilitate more solar and reduce demand by feeding back during peak. It is a great potential solution to reduce need for new source and integrate more clean energy.

Dave Davies

Your missing the point, you charge the car with solar, you power the house From the car in the day, the governments will pay you to access the car as a storage device, this the the future of power delivery and it can’t come soon enough