The Kaskasi offshore wind farm is located about 35 km north of Heligoland Island in the German North Sea. It comprises 38 Siemens Gamesa SG 8.0-167 DD Flex wind turbines, with a total capacity of 342 MW. The foundations use monopile structures, with three turbines featuring innovative steel collars for improved structural stability. Since its official commissioning in March 2023, the wind farm produces approximately 635 GWh of green electricity annually.
As part of the engineering services, several innovative solutions were implemented: including the collared monopile to reduce embedment length, the vibro pile design for low-vibration driving, and SEPS — self-expanding pile shafts to increase lateral soil resistance. The compact transition pieces feature a high-level interface and a short skirt.
