Tahkoluoto

Tahkoluoto is Finland’s first commercial offshore wind farm, sited off Pori in the northern Baltic (Gulf of Bothnia). The near-shore demonstration array was developed to prove technology and construction methods for operation in freezing-sea conditions and to kick-start a domestic offshore supply chain. Although modest in scale compared with modern large farms, Tahkoluoto has outsized significance as the world’s first operating offshore wind farm expressly designed for ice loads and winter operations, and as a Finnish industry reference for logistics and foundation concepts. Construction was delivered using locally adapted methods: hollow steel gravity-base foundations were manufactured domestically, seabed preparation and installation were carried out by specialist marine contractors, and bespoke lifting and levelling systems were used to set the bases precisely. The project benefited from public support during development and served as a demonstration of Finnish capability in Arctic-capable offshore technology. Commercially it has remained owner-operated and has been used as a reference asset while the developer progressed plans for a much larger, separate Tahkoluoto Extension. The original Tahkoluoto assets and the developer’s corporate structure were reorganised ahead of larger investments, but the operating farm itself has continued in service since commissioning and has been cited in company reporting as a reliable, well‑performing demonstration platform for arctic offshore wind practice.