Butendiek

Butendiek is a commissioned 288 MW offshore wind farm in the German sector of the North Sea located roughly 32 km west of Sylt. Developed and managed by wpd and partners, the project comprises 80 turbines and entered operation in 2015, exporting power via the TenneT SylWin cluster. Butendiek is notable as a mid‑2010s commercial-scale German offshore park that proceeded through complex permitting and financing to become operational: construction began in 2014 with monopile foundations and phased turbine commissioning through 2015. Financing combined a large debt package and substantial public-lender participation (including the EIB) and a consortium of institutional equity partners, and the project has been actively refinanced and partially divested in the years after commissioning. Technically, the farm connects its internal 33 kV array to an offshore substation and a short AC export link to the SylWin alpha HVDC platform, which transmits to shore via longer HVDC cables. During construction the operator implemented enhanced underwater noise mitigation and ecological monitoring; public reporting highlighted low measured pile‑driving sound levels and ongoing porpoise monitoring. Commercially, ownership stakes have rotated among institutional investors (Marguerite, Siemens Financial Services, pension funds, Greencoat, ITOCHU/CITIC and others) and the asset has been used to secure PPAs in the corporate market. Operational performance and a 10+ year contracted revenue profile have underpinned refinancing activity since full commissioning.