Fabrication has begun on the topside for Synera Renewable Energy’s 495MW Formosa 4 offshore wind project off the coast of Taiwan.
The consortium between Denmark’s Semco Maritime and Vietnam’s PTSC Mechanical & Construction held a First-Cut ceremony at PTSC’s fabrication yard in Vung Tau in Vietnam.
The First-Cut Ceremony signifies the transition of the Formosa 4 OSS project from engineering and procurement into full-scale construction. Under the EPC 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’s jacket and topside, with scheduled delivery by the end of 2027, the consortium said.
Frank Holm, Senior Vice President, COO Renewables, Semco Maritime said: “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 delivering the project in line with the key milestones ahead.”
To Ngoc Tu, Managing Director of PTSC M&C added: This project builds upon our established track record in Taiwan and our close cooperation with Semco Maritime.
“With the experience gained from previous offshore substation projects, our teams are fully prepared to execute this scope efficiently and responsibly, contributing to the long-term development of offshore wind in the region.”


