Baltica 2 close to construction launch – boulder relocation ongoing on the future wind farm site
Preparatory works are underway in the Baltic Sea that directly precede the construction of Baltica 2, a joint-venture by PGE and Ørsted. Boulder relocation on the seabed is a key stage in preparing the site for the installation of foundations and underwater infrastructure for the largest offshore wind farm in Poland.
The Olympic Electra, first operational vessel, has been deployed on the designated area of future Baltica 2 offshore wind farm, initiating the process of relocating boulders and other seabed obstructions. The aim is to clear the seabed in preparation for the installation of key infrastructure – both at the turbine locations and along the planned export and inter-array cable routes. Boulder relocation campaign will last until early 2026.
The vessel is equipped with a dedicated boulder picking spread supplied by Utility ROV Services (UTROV). This technology enables the safe removal and relocation of boulders and debris with diameters of up to three meters (incl. old fishing nets, steel wires, parts of wood etc.).
“Undergoing preparatory works at sea is the final stage before the construction phase begins. The boulder relocation operation has a direct impact on the safety and efficiency of the subsequent stages – the installation of foundations and other underwater infrastructure elements. As the leader of the offshore part of the Baltica 2 project and a company that has built over 30 offshore wind farms around the world, we are very excited to be embarking on advanced work in the Baltic Sea,” said Ulrik Lange, Vice President and Managing Director of the Baltica 2 project, Ørsted.
“The Baltica 2 offshore wind farm project is now indeed ‘going offshore’. We have planned to install the foundations and other components in 2026 and 2027, and the boulder relocation campaign will allow us to actually start construction work at sea. We have to move about 10,000 objects of various sizes. Several dozen people from the ship’s crew are directly involved in the entire process, not counting its service, supervision by investors, and specialist teams that took part in reconnaissance of the bottom at the research stage,” commented Bartosz Fedurek CEO of PGE Baltica.
Clearing the site will enable the installation of scour protection and turbine foundations in 2026, as well as inter-array and export cables in 2027.
The contract with UTROV was signed in 2025. The equipment in use has a proven track record, having been deployed in similar seabed clearance operations across various offshore wind projects in Europe.
Baltica 2, developed jointly by Ørsted and PGE, is the largest offshore wind farm under construction in Polish waters of the Baltic Sea. Once operational – planned for 2027 – it will deliver up to 1.5 GW of green energy, powering approximately 2.5 million Polish households.