Impsa
says
the
expensive
move
has
been
made
to
improve
the
1MW
turbine’s
design,
and
rejects
industry
insiders’
claims
that
the
blades
have
been
replaced
to
overcome
vibration
problems.
“What
we
did
was
optimise
the
design
of
the
blades
that
were
designed
for
the
first
prototype
machines,”
says
Impsa
executive
vice-president
José
Luis
Menghini.
“The
new
design
guarantees
better
energy
production.”
The
wind
farm,
a
joint
venture
between
state
electricity
company
Enarsa
and
the
government
of
La
Rioja,
came
on
line
last
year.
Another
12
turbines
are
being
added…
