Posted by Balanced View on June 9, 2008, 11:25 am
Chris Hill wrote:
This is an international newsgroup, what might not work for you will for
other countries with different conditions.
I've heard of winter, I live in Canada.
Posted by Chris Hill on June 9, 2008, 1:10 pm
So, is there some magical land where excess powerplant capacity is
going unused and the grid has been designed to handle the heavy
demands that a bunch of electric cars would place on it? Frankly, I'd
Posted by Jonathan Grobe on June 9, 2008, 4:44 pm
The vast majority of the electric utilities in the US are summer
peaking (because of the air conditioning load). Summer is when you
hear of electrical brown-outs.
1. In summer, air conditioning demands (along with other demands)
are much higher at the peak of the day--and lower at night when
the cars would be recharged. So there is capacity then.
2. In winter, while winter residential heating is higher at night
(it being colder then), this is balanced by your other residential
as well as commercial and industrial demands being lower at night.
But also as stated the electric power system is sized for the
higher summer peaking--so you have capacity for cars to be re-charged.
I don't know how big this excess capacity is, I expect enough for
a few million cars--but not nearly adequate if a significant percentage
of people get electric cars.
Jonathan Grobe Books
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Posted by Chris Hill on June 9, 2008, 6:45 pm
On Mon, 9 Jun 2008 16:44:53 +0000 (UTC), Jonathan Grobe
Not really. In my area anyway, they've built natural gas peaking
plants to handle peak demand. When demand drops they shut down. Nat
gas is a much more expensive way to generate electricity, so calling
on these plants for more would just drive up the price. Add to that
the fact that much of our electrical grid is way overdue for capacity
expansion and replacement of aging components, and you'll understand
why the idea of electric cars for the masses is foolish.
Posted by Irregular on June 10, 2008, 12:11 pm
Chris Hill wrote: