The news came as a shock to analysts amid worse-than-expected financial results and could significantly damage Vestas’ reputation. Chief executive Ditlev Engel described the issue, which was detected by Vestas’ own performance diagnostic centre and affects 376 turbines it sold between June 2009 and September 2011 — including 36 offshore — as a “very nasty surprise”.
The affected turbines account for a third of V90s shipped during the period.
