Jan De Nul has completed the installation of the 47 jacket foundations, 188 pin piles, four export cables and 47 inter-array cables at the Formosa 2 offshore wind farm in Taiwan.
Jan De Nul contracted EEW KHPC for the fabrication of the pin piles, some with a weight of over 270 tonnes and a length up to 79 m. In 2020, the piles were transported from fabrication yards in South Korea and Malaysia to the marshalling harbour in Taichung, Taiwan. Heavy lift vessel Seaway Yudin commenced piles installation in water depths up to 55 m, with the final pile installed on August 22, 2022.
During the installation activities, Jan De Nul managed underwater noise monitoring and marine mammal observation in compliance with the environmental restrictions and permits.
Jan De Nul ordered the jacket foundations from Sembcorp Marine and Saipem at yards in Indonesia. With heights of up to 91 m and weights exceeding 1,600 tonnes, they are amongst the largest and heaviest jackets in the offshore wind industry. From October 2021, three heavy transport vessels delivered all jackets to the marshalling harbour for intermediate storage and final preparation before installation, which commenced in April 2022 with heavy lift vessel Bokalift 1.
34.5 km of export cables and 87 km of inter-array cables were made by LS Cable.
“Throughout the project, joint efforts were made to overcome various challenges with a strong commitment shown by Formosa 2 and Jan De Nul to deliver this project during unprecedented times of the Covid-19 pandemic,” said Michael Klingele, Formosa 2 project director.