EDF Renewables and GE Renewable Energy are investigating after a blade failure at its Park Spring wind farm in South Yorkshire, England.
Images online show one of the three turbines supplied by the US manufacturer at the project near Barnsley with a badly damaged blade.
The incident occurred on Friday, 12 March.
A spokeswoman for the French developer said it is aware of the “blade failure”.
“We’ve cordoned the area off with fencing and some nearby public footpaths have been closed to ensure people’s safety,” she added.
“We would like to thank the local community for their cooperation.”
EDF Renewables is “working closely” with turbine manufacturer GE Renewable Energy to find out the root cause of the incident, a statement added.
“All turbines remain switched off.”
Park Spring (pictured) is an 8.5MW scheme that was built in 2015.