New York Times: Honda says don't power your house with hybrids, buy a Honda generator
Filed under: Emerging Technologies, Toyota

The Sunday New York Times writes about the Prius powering someone's house and the future potential of V2G or vehicle to grid. A Honda (shouldn't that be Toyota?) spokesperson shot down plans for hybrids powering homes responding; "We would not like to see stresses on the battery pack caused by putting it through cycles it wasn't designed for." "Instead, they should buy a Honda generator that was made for that purpose."
The article also has opposing view points on V2G. They range from "pie in the sky" and at the "science project stage" to a technology that's "underutilized" and "win-win" for power companies and car owners. The costs for making your car into a back-up generator were quoted at $2,000 to $4,000 with simple ones built for just $200. Couldn't you just plug in your house in the cigarette lighter?
Related:
- DOE, FERC fight over V2G on blog
- V2G? PHEV? Just another green car day in Colorado
- PG&E demonstrates first ever vehicle-to-grid charging
- How PG&E will help Google with that 100+ PHEV, make computing greener and build the smart grid











Reader Comments (Page 1 of 1)
9-02-2007 @ 7:16PM
why not the LS2LS7? said...
No thanks. I am a huge fan of electric stuff (emissions and efficiency nut), so I don't have a gas can since none of my home yard devices are gas.
So I'd have to buy a generator, buy gas, buy a gas can, and run the thing from time to time to keep the gas from going bad.
Or I could just use my car, which usually has gas in it and the gas is kept fresh through periodic use.
V2G just makes sense for standby (blackout) power. I dunno about using it for going "off the grid" though.
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9-02-2007 @ 7:39PM
Kent Beuchert said...
Actually, using a plain hybrid to power a house makes little sense due to their low capacity.
Now, when the Chevy VOLT is out, I could power my house for around 8 hours and not exceed GM's concerns about battery usage. And after that the range extender motor would kick in and run as required by the draw from the house until the gasoline tank runs dry (don't lett that happen - go fill up and return).
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9-02-2007 @ 10:05PM
Chris M said...
Since a standard hybrid has limited capacity, 1 Kwh or less, Honda (and Mr. Beuchert) is right, it makes little sense unless the engine was running - but that is not safe in a garage due to CO and oxygen depletion and not safe from car thieves on the street, unless special precautions are made.
Plug-ins have extra capacity and could fare better. The GM Volt would have approx. 8 Kwh of spare capacity before the range extender kicks in, so apparently Mr. Beucherts home uses, on average, 1Kwh per hour. At that rate, the battery pack on the Tesla Roadster could keep his house going 2 full days, without using any fuel!
Just how long would the outages last? In most instances, the power isn't out for very long. Also, with careful conservation, turning off everything unnecessary, the length of runtime could be dramatically increased.
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9-03-2007 @ 12:21PM
rgseidl said...
Unless you live out in the boonies, electricity from the grid will always be cheaper than producing your own with a generator - especially if the generator happens to be your car engine, which is grossly over-dimensioned for that job. For emergency use, it might be fine provided you temporarily disconnect your home from the grid to avoid line EMI issues.
V2G is a concept intended to reduce the total cost of ownership of a PHEV in California, which made a hash of its electricity deregulation. However, with cycle life still a major concern for automotive traction batteries, it seems quite premature to talk about increasing the cycle count while stationary. Replacing a battery pack early will almost certainly cost more than any revenue/discounts generated by offering the grid operator a way to level his electrical load.
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9-03-2007 @ 12:31PM
Lascelles Linton said...
Rgseidl, you are probably right in most places but you may be wrong in California. I have not looked into it yet but the idea seemed possible ever since I wrote an article about the operating cost of PHEVs.
Also, why buy a generator or back up battery if you already have it? Seems like a good dual use idea to me. Not just for emergencies or off the grid either. Anyone heard of Gridpoint? Energy costs go up and down. Storing energy in your car battery could save you money.
Feels like Honda just wants to sell more stuff to me.
http://www.autobloggreen.com/2007/08/10/phevs-cost-more-to-operate-than-gas-cars/
http://www.autobloggreen.com/2007/08/12/autobloggreen-interview-with-daniel-kammen-on-phevs/
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9-03-2007 @ 7:57PM
Bill said...
Here's his website:
http://priups.com/riddle/answer-1.htm
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9-05-2007 @ 5:01PM
kballs said...
I would LOVE to be able to run my refrigerators/freezers and/or furnace fan (gas furnace) from a PHEV during a blackout, but V2G on an every-day basis would just put a LOT of extra wear on the batteries... not to mention it would actually use more electricity (waste in back-and-forth conversions) and not even out the load since your car would be at work during peak usage (and even if plugged in would just be saving your company money on electricity, not you).
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