The
23-tonne
machine
—
a
downwind
design
based
on
a
ballasted,
tension-moored
tower
that
allows
it
to
float
“like
an
upright
bottle”
and
yaw
with
the
prevailing
wind
—
had
logged
about
200
hours
of
grid-connected
operation
in
Hjeltefjorden
before
being
scuppered
by
the
storm
“
Berit”.
“Berit
was
an
extreme
storm.
It
was
not
[just]
the
prototype
that
was
affected,
the
whole
of
the
west
coast
took
a
hammering
—
high
winds
and
waves
over
five
metres
in
height,”
says
Sway
chief
executive
Michal
Forland.
“If
this
turbine
had
been
a…
