Onshore Site Preparation

In July 2022, Amprion commenced horizontal directional drilling (HDD) work at Norderney Island's North Beach as an early preparatory activity for the DolWin4 offshore grid connection. This shore-crossing bore creates the conduit under the island and through the Niedersächsisches Wattenmeer National Park through which the HVDC submarine cables will later be pulled to reach the landfall point at Hilgenriedersiel. The HDD campaign at Norderney is a long-lead construction preparatory activity undertaken well before the project's formal Final Investment Decision (BNetzA NEP confirmation in March 2024) and before the main onshore cable route construction campaign that commenced in June 2024 at Lingen and Wietmarschen. The work at Norderney was carried out in parallel for both DolWin4 and BorWin4 grid connection systems, which share the same shore-crossing corridor. Offshore Energy reported on 26 December 2023 that Amprion had started onshore construction work for DolWin4 and BorWin4 at Norderney Island's North Beach in July 2022, placing this activity approximately two years before the main construction phase began further inland.