Indeed those 310Wh/Kg EEStor ceramic ultracaps we discussed the other day, or similar, would just make the difference between an all-gasoline and an all-electric car society.

Present best Lithium Polymers with their 185Wh/Kg are just not enough, they would allow 2h autonomy only IIRC, and would be too expensive for an all-electric solution (although they are perfectly sufficient for hybrids).

Michel

----- Original Message ----- From: "Zell, Chris" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, March 16, 2006 11:37 PM
Subject: RE: Simple comparison electric car versus gasoline


This lack of additional generating capacity need is partly why a Really
Good Battery would have such a dramatic effect on society.  You create
electric cars
that run much cheaper per mile without much need for additional fossil
fuel generator use.  Indeed, I think that such a device would encourage
an explosion
of alternative development that would quickly challenge utilities fossil
fuel use.  In their late night nightmares, I suspect that Arab nations
fear such a
development, as some of them take a long term view , such as the Saudis.

-----Original Message-----
From: Michel Jullian [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 16, 2006 5:17 PM
To: [email protected]
Subject: Re: Simple comparison electric car versus gasoline

Jed you made an excellent point here, as amazing as it may seem no
additional generator capacity would be needed (if your maths are right
which they seem to be).

Michel

----- Original Message -----
From: "Jed Rothwell" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, March 16, 2006 10:28 PM
Subject: Re: Simple comparison electric car versus gasoline


Horace Heffner wrote:

We may get away with that for a while, but sooner or later the states
have
to find a way to pay for the road maintenance currently paid for by
gas
taxes.  Meanwhile, the lack of road taxes on electricity is a  great
and
automatic incentive.

I had not thought of that. However, the Federal road maintenance
highway
tax is only $.18 per gallon, or 0.8 cents per mile for the average
car.
You could replace it with a mileage tax based on the odometer reading,
or
a simple flat fee per vehicle.


The above map only shows current electric prices, not the incremental
cost of new electricity.  It reflects much old capital invested in
dams, etc.

New electricity from wind power or large-scale solar in the Southwest
is
presently expensive but if it is developed on a large scale it will
soon
become dramatically cheaper.


As vehicles are converted from petroleum to electric power the
incremental
demand will cause new the electric rates to  come more closely in line

nation wide.

Actually, electric vehicles use such a small amount of electricity, I
doubt that any additional generator capacity will be needed. Some
additional fuel will be burned and fissioned, of course. Here is 2001
data
from the Annual Energy Review 2002:

Average annual mileage (miles per vehicle): 11,766
Miles per day: 32
Electric vehicle consumption per mile: 0.3 to 0.5 kWh (Wikipedia)
Electric energy per day: 16 kWh

In other words, recharging a car would be like plugging in a 1.5 kW
electric room heater for just over 10 hours. If every US household did

this from 9:00 p.m. until the next morning, it would put no strain on
our
generating capacity. It would be a problem with everyone did it at 3
p.m.
a summer afternoon, but not at night. In many houses you could
probably
turn off a half-dozen lights and a television to save most of this
power.
If the car dealerships and grocery stores a few miles from my house
would
turn off half the lights they leave burning all night, they would save

enough electricity to power every car in the County!

- Jed




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