Vestas has temporarily taken around 150 of its V150 machines out of service “in an abundance of caution” after identifying a blade fault as the cause of a turbine collapse in Sweden late last year.
A investigation into the V150 4.2MW collapse at the Aldermyrberget wind farm found a bonding failure on blade-root inserts due to a manufacturing issue at a single supplier, confirmed a spokesman for the Danish wind giant.
Vestas has halted around 150 of the turbines that could potentially be exposed to the same issue, which caused a loose blade to destabilise the Swedish turbine and collapse, he added.
“Vestas is taking this step out of an abundance of caution and is working to put a solution in place to get the turbines safely operating again,” the spokesman told Recharge, adding that the company is liaising with customers over options for repair or replacement.
No other operational turbines have been affected, and the fault is not related to two other V150 blade incidents in the US and Australia last year, said Vestas.
Nobody was hurt in the incident at the Aldermyrberget project, which is owned by Wpd and was ramping up for full commissioning when the turbine collapsed in November.
The V150 has been a huge commercial success for Vestas over the last few years, with thousands of the turbines ordered for deployment in markets around the world as developers move to more powerful machines. The OEM had booked more than 10GW of orders for the V150 4.2MW by mid-2020.