Positive
Project advancing - milestone achieved
Medium Impact
Significant progress or notable issue
Offshore construction of the Princess Elisabeth Island (MOG II) energy hub effectively begins in the 2024–2027 period, with TM Edison (led by Jan De Nul and DEME) building and installing large concrete caisson structures 45 km off the Belgian coast for project owner Elia Transmission Belgium. Caissons are fabricated in Vlissingen (Netherlands), then sunk at sea and filled with sand to form the island’s foundations, and by mid‑September 2025 Jan De Nul reports that the latest set of massive concrete structures forming the island’s outer walls has been installed offshore, confirming that marine construction is underway.