A turbine has collapsed at the veteran Paludans Flak offshore wind farm near the island of Samso in Denmark.
The 2.3MW Siemens machine lost its blades and nacelle, which collapsed into the water on 28 November.
No cause has yet been identified for the failure, during which no one was injured.
The 12-year-old wind farm was shut down in the wake of the incident.
Following checks the remaining nine turbines have now been cleared to return to operation.
Paludans Flak was built by local shareholders in 2002-03.
Image: Paludans Flak Havvind