On 24 Aug 2007 at 15:11, Darryl McMahon wrote:
solar panels are the most efficient way of
converting
radiant sunlight energy into electricity
(approaching 20% vs 1% or
much less for plants).
Where do they get this number? I think I've read
that mass-produced PV is
around 10% efficient at normal operating
temperatures.
I may have missed it, but they also don't seem to
have figured battery
amortization into the operating costs. For road
EVs, this is the largest
contribution to per-mile expense, and I'd bet that
this will also be true
for an electric tractor in daily service.
I'm not saying they're wrong or that they shouldn't
explore this option.
Far from it! It's just that I think we as EV fans
hurt ourselves when we
aren't realistic about the utility and costs of
electric transport.
David Roden - Akron, Ohio, USA
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War is an option whose time has passed; peace
is the only
option for the future. At present we occupy a
treacherous
no man's land between peace and war, a time of
growing fear
that our miltary might has expanded beyond our
capacity to
control it and our political differences [have]
widened beyond
our ability to bridge them ... the only way to
achieve a
practical, livable peace in a world of
competing nations is
to take the profit out of war.
-- Richard Nixon, "Real
Peace"(1983)
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