DEME contracted Allseas to install the substation jacket and topsides, transferred to Pioneering Spirit in the field, and installed directly with the 5,000-ton crane. Earlier, DEME installed the pin piles in the rocky seabed for the OSS jacket foundation.
Completed in two days, the “lift and set down” job is a repeat of Allseas’ first project for the offshore industry, the OSS installation for the Saint-Nazaire wind farm in the Bay of Biscay in August 2021.
The Ile d’Yeu et de Noirmoutier wind farm is situated about 20 kilometers off the Atlantic Coast. The 488 MW substation will be the heart of the development, converting the energy generated by 61 turbines and transferring the electricity to the French mainland.
When complete, the offshore wind farm will produce enough energy to meet the annual electricity demands of around 800,000 people.
