The
US
company’s
revolutionary
power-station
concept,
to
be
built
on
a
6,880-hectare
site
near
San
Luis,
southwest
Arizona,
is
based
on
what
would
be
the
world’s
tallest
man-made
structure
—
a
914-metre
hollow
tower
—
outfitted
with
a
water-spray
system.
It
is
able
to
generate
2.5GW
from
a
high-speed
stream
of
“downbursts”
of
air
within
the
tower
to
turn
an
array
of
turbines
in
the
foundation.
The
downdraft
tower
concept
is
not
new
—
it
was
hatched
in
the
1980s
by
US
inventor
Phillip
Carlson
and
has
been
developed
by
researchers
including
the…
