The incident occurred at the Screggagh wind farm in County Tyrone, which was developed by DW Consulting in 2011. According to reports, the turbines blades were "spinning out of control" prior to the collapse.
Nordex is currently conducting an investigation into the cause. It originally won the turbine contract for the project in 2010. It was DW's first project in Northern Ireland.
This is not the first time a turbine has collapsed in the region. In 2013, a project in Donegal, Republic of Ireland, suffered a similar setback after a V52 blade cut through the tower following a failure of the machine's pitch system.