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Nissan testing peak-shaving services from Leaf EV to building

Nikkei. Nissan Motor introduced a trial setup in which a Leaf electric vehicle provides power for a limited time to a building during periods of its peak power demand (peak shaving).

The test entails supplying 4%, or 6 kW, of the peak summer power consumption of a municipal administrative center in the Oppama district of Yokosuka, Kanagawa Prefecture. The EVs will supply power from 1 p.m. to 3 p.m., when usage tends to spike in July through September.

This is said to be the first attempt in Japan to use EVs at such a facility to curb power drawn from the conventional grid during peak consumption.

Comments

kelly

More options.

Davemart

The battery is rated at 100,000 miles on the Leaf.
The $12,000 it costs (Renault, insured value) works out at 12 cents a mile.
At 4 miles per kwh then the 6kwh they are draining here costs about $2.88.
Even if you are paying $0.30 kwh for peak electricity it would only cost you $1.80, so it sounds like a lousy deal.

In a year you might knock about $1,000 worth of depreciation off your battery.

Batteries would have to last for a lot more cycles to make this of much interest, save in Japan which is in a permanent state of energy emergency since switching off perfectly good reactors.

mahonj

@Dave, you pose some good questions there:

What is the real life of a battery ?
100K sounds like a round number.

How would people know if you had been doing some load levelling - it wouldn't show up on the odometer.
If they are only taking 6KwH from a 24 KwH battery, it probably won't cause too much of a problem.

Then, there is the notion of the value of electricity.

Nominally, it is worth 20c / KwH, but, in reality, it is worth much more. In particular, avoiding a power cut is worth a lot. If you can keep your staff working, and don't have to send them all home and spend the next morning rebooting and resetting everything, this is worth a lot more than 20c / KhW.

So having some extra power capacity is a good thing if it enables you to avoid blackouts. Whether it has to come in the shape of a Nissan Leaf, is another question.

Nissan probably love this as it looks very good, and adds to the value of a quite expensive Leaf.

Davemart

Mahonj:
The 100,000 miles I use is from the Nissan figures down to 70-80% capacity.
I believe the battery may have separate monitoring for depletion/recharging.

mahonj

@DM- OK, I can buy that.

Then you have the group vs individual battery use.
I am sure people would like to use their car battery to run their own house during a blackout.

It is another thing to use your battery for system wide load balancing -
a: It will be used much more often (i.e. most summer days) and
b: You could still get hit by power cuts.

Maybe the power company should buy a percentage of your battery (25 - 100%) and let you use it, rather than the other way round.
If they owned half your battery (and paid for it up front), you wouldn't feel so bad about their using it.

HarveyD

We pay only $0.06/Kwh, 24/7 for 99.99999 % availability for clean hydro power.

No ICE vehicle can match that.

HarveyD

With our 250 Kw emergency generator, the real availability has been 100%.

Reel$$

Japan which is in a permanent state of energy emergency... According to government a 5% shortfall for Tokyo... Western Japan possibly 15% - so far no one's lights have gone off. And the Japanese people are celebrating.

http://www.huffingtonpost.com/2012/05/05/japan-nuclear-reactors_n_1483084.html

"This is a turning point for Japan, and a huge opportunity for it to move towards the sustainable energy future its people demand," Greenpeace said in its advanced energy revolution report. "With an abundance of renewable energy resources and top-class technology, Japan can easily become a renewable energy leader, while simultaneously ending its reliance on risky and expensive nuclear technology."

There are better ways to generate energy - looks like we'll have to start using them.

Davemart

Yeah, Greenpeace really couldn't care less ab out the dozens of people who ahve died from heat prostration due to switching off perfectly good reactors in areas in no danger from tsunami.

That is the actual death toll, with zero from radiation.

The hysterics have taken over.

Reel$$

FukUshima is an unmitigated disaster and directly responsible for Europe's rejection of fission. Fission is now 70 years old and in need of retirement. NASA has announced a new energy direction for both domestic power supplies and spacecraft.

Combined with alternatives already in progress - we do not need fission and its $$billion safety and cleanup costs.

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