Capitol wrote:



The Natural Philosopher wrote:

http://www.unipros.com/cbpsite/lipod...sion_id=111428

You are not allowed to airfreight larger Lithium batteries because
of the explosion risk!

Asfar as distribution infrastructure goes, I am sure that a single 3Kw
overnight load on every household is within current (sic!) capabilites..


I doubt it, say 22M households = 30 M cars. 270M extra KW required
overnight. I suspect we might need a few new real power stations, not
wind generators.

That's assuming everyone does 300 miles a day.
Besides peak charge rate is only 3 kW, so 30M cars is 90,000 MW only.

Would not be surprised if you could not get that back by switching off
all the street lamps. And traffic lights.

In reality I am fairly sure that most drivers would charge about once a
week, dividing that by 7, to get 13GW as the total extra burden.

A GW is about what a large power station produces. So 13 power stations
would keep most of the country on the roads by day,and the 3KW per
household is not a bad estimate for what is drawn by a given household
on average anyway. I would estimate 1-2KW is the average draw, most by
day, which sort of means peak capacity is probably 2-4Kw/household.

Adding - for a once a week charge - another 450W to overnight demand is
not a huge increase.

Anyway, maths aside, the grid could almost certainly cope as long as
most charging is off peak, which it would be, and I suspect the only
impact on power stations would be that some that are shut down overnight
would stay up all night. And a few more base load stations would need to
be constructed. I'd say half a dozen big nuclear sets could supply
nearly all that was needed.











Regards
Capitol