Many
so-called
pundits,
myself
included,
made
predictions
about
the
maximum
size
of
turbines
that
in
retrospect
were
ridiculously
conservative.
We
have
now
stopped
making
such
predictions
and
are
happy
to
be
amazed
by
the
engineering
achievements
of
the
present.
One
useful
“back
of
the
envelope”
limit
is
that
a
turbine
blade
longer
than
about
1km
would
probably
buckle
under
its
own
weight,
so
there
is
still
plenty
of
scope
for
growth!
Offshore,
we
are
just
starting
something
big.
On
land,
turbine
designs
are
constrained
by
having
to
be
good
neighbours
to
humans.
There…
