Formosa 4 Offshore Wind Substation Enters Fabrication Phase

The consortium of Semco Maritime and PTSC Mechanical & Construction has started fabrication work on the Formosa 4 offshore substation, marking a key construction milestone for the 495 MW offshore wind project off the coast of Taiwan.

The partners held a first-cut ceremony at PTSC Mechanical & Construction’s fabrication yard in Vung Tau, Vietnam, formally launching the construction phase of the offshore substation after more than a year of engineering and preparation work.

Formosa 4 is being developed by Synera Renewable Energy and represents its third offshore wind project in Taiwan. The project is intended to support Taiwan’s renewable energy targets and localization policy.

Under the engineering, procurement, construction and commissioning contract awarded in late August 2025, the Semco Maritime - PTSC M&C consortium is responsible for the design, procurement, construction and commissioning of the offshore substation jacket and topside, with delivery scheduled by the end of 2027.

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“Having progressed through more than a year of engineering and preparation, today’s first steel cutting marks the formal transition of the Formosa 4 project into the construction phase. From this point forward, our consortium is fully focused on