Belgium’s Offshore Energy Island Takes Shape : Forty-five kilometers off the coast, workers recently lowered the final concrete caisson to complete the outer walls of Princess Elisabeth Island. These 23 massive blocks, each weighing 22,000 tonnes, enclose an offshore area roughly the size of eight football fields. Crews are now filling the interior with sand to create a stable ground for the central electrical hub. By collecting power from upcoming 3.5-gigawatt wind farms, the island will streamline power transmission while eliminating the need for numerous individual cables running ashore.
Building this infrastructure brought both ecological design and steep budget challenges. Project costs expanded toward seven billion euros, prompting engineers to adjust the electrical architecture. Alongside its energy role, the island features artificial ledges along the concrete walls to harbor threatened seabirds, while underwater oyster beds protect the foundation against seabed erosion.
