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On Tue, 23 Apr 2019 17:01:36 -0400, wrote:

On Tue, 23 Apr 2019 16:08:55 -0400,
wrote:

On Tue, 23 Apr 2019 14:11:32 -0400, wrote:

They are assuming coal fired electric plants but I agree all electric
cars do is move the smoke stack down the road a ways.

===

In my opinion that's an over simplification. For one it ignores the
fact that stationary, large-scale power plants are much more efficient
than the average internal combusion engine used in vehicles. Secondly,
the charging is usually done at off peak hours when there is typically
excess grid capacity. Last but not least, the trend is pointing in
the direction of renewable energy such as wind and solar. If we live
long enough (doubtful), we might even see clean nuclear fusion some
day. As an additional benefit, electric cars have done quite a bit to
advance the state-of-the-art for light weight, high efficiency
batteries. Those gains will eventually prove useful for the storage
of wind and solar energy.
That all assumes a clean power plant in the first place. The article
was talking about coal plants and we still have plenty of them.
Your solar power is not going to do much if the cars are charged at
night.

===

At least in this country, coal plants are rapidly going away.

Solar power at night is not going to happen of course. New battery
technology, and other energy storage devices, will eventually help
with that issue however. If every south facing roof in Florida was
covered with high efficiency solar panels, there would be plenty of
energy to spare for battery charging. I think that will eventually
happen as the price of solar panels steadily decreases.

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