MikeD
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Nissan wants Leaf to (be able to) power your house

Mon Jun 20, 2011 9:17 pm

This seems to me to be a really important direction for EV cars to go:

http://reviews.cnet.com/8301-13746_7-20 ... our-house/

It raises, however, a lot of questions to me on how might this be implemented without costing a lot...

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davewill
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Re: Nissan wants Leaf to (be able to) power your house

Mon Jun 20, 2011 9:33 pm

Assuming a way to access the battery, and from what the Nissan exec said, they can do so through the CHAdeMO connector, you would need essentially the same sort of hardware that's used for an off-grid PV or wind system that uses a storage battery. Basically an inverter to produce 240vAC. Not real cheap, but since the battery is by FAR the most expensive part of such a system, also not terribly expensive.
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MikeD
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Re: Nissan wants Leaf to (be able to) power your house

Mon Jun 20, 2011 10:45 pm

davewill: What you replied makes perfect sense as far as powering a house (so thank you very much!), but I guess I was also thinking (much?) further in the future when/if V2G strategies have begun to be implemented when there are many more EVs around.

In a related issue maybe this is why Nissan favors a separate Level 3 connector, instead of the combined Level 1-3 connector SAE is currently investigating.

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Nekota
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Re: Nissan wants Leaf to (be able to) power your house

Mon Jun 20, 2011 11:18 pm

This will also make a resale market for those 50 to 70 percent capacity 'old batteries'.
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lemketron
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Re: Nissan wants Leaf to (be able to) power your house

Sat Jul 09, 2011 1:53 am

Nekota wrote:This will also make a resale market for those 50 to 70 percent capacity 'old batteries'.
My thoughts exactly. Someone needs to build a whole-house UPS inverter/charge controller for our old Leaf battery packs. Ideasome the inverter would also convince a grid-tie inverter into starting up even if the grid is unavailable.

That said, doing V2G through the QuickCharge port (prior to battery replacement time) would also be very cool. Bring it on!! :-)
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tps
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Re: Nissan wants Leaf to (be able to) power your house

Sun Jul 10, 2011 5:26 pm

lemketron wrote:the inverter would also convince a grid-tie inverter into starting up even if the grid is unavailable.
Outback Power Systems makes a grid-tie inverter with a built-in transfer switch with allows it to provide backup power when the grid is down.

http://www.outbackpower.com/products/sinewave_inverter/

IBELEAF
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Re: Nissan wants Leaf to (be able to) power your house

Sun Jul 10, 2011 7:28 pm

Wouldn't this be more practical on a gas car or even a hybrid...
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lemketron
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Re: Nissan wants Leaf to (be able to) power your house

Sun Jul 10, 2011 7:36 pm

IBELEAF wrote:Wouldn't this be more practical on a gas car or even a hybrid...
Not for someone with a PV (solar) system on the roof. The Leaf has 24kWh of battery on-board, which is a day's worth of power for most homes (especially if the grid was out and you were trying to power just the essentials).

There's nothing in a gas car that would lend itself to powering your home during a power failure or storing energy generated by a PV system.
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rainnw
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Re: Nissan wants Leaf to (be able to) power your house

Sun Jul 10, 2011 9:50 pm

Nekota wrote:This will also make a resale market for those 50 to 70 percent capacity 'old batteries'.
Yeah, i could just put a bunch of old LEAF's up on blocks 10 years from now to power my house :p

But seriously, I was disappointed Nissan did not engineer this capability from the start. If you didn't need the entire battery pack, you could even make a little bit of money off to the side storing grid power...or the car could be your PV battery solution.
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lemketron
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Re: Nissan wants Leaf to (be able to) power your house

Sun Jul 10, 2011 10:38 pm

rainnw wrote:But seriously, I was disappointed Nissan did not engineer this capability from the start. If you didn't need the entire battery pack, you could even make a little bit of money off to the side storing grid power...or the car could be your PV battery solution.
True... Especially if you're on "time of use" and happen to work from home now and then!
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