The consortium between Semco Maritime (Denmark) and PTSC Mechanical & Construction (PTSC M&C, Vietnam) has secured an Engineering, Procurement, and Construction (EPC) contract with Synera Renewable Energy (SRE) for the offshore substation of the Formosa 4 wind farm, located off the coast of Taiwan. This milestone reinforces the consortium’s growing prominence in the global offshore wind industry.
The Formosa 4 offshore wind farm, developed by SRE, is a 495 MW project and represents SRE’s third offshore wind initiative in Taiwan. It aligns with Taiwan’s localization policy, advancing the nation’s renewable energy ambitions.
Following extensive negotiation rounds, Semco Maritime and PTSC M&C consortium were awarded the EPC contract and entered into the EPC contract in early September 2025. The consortium’s scope includes design, procurement, construction, and commissioning of the offshore substation’s jacket and topside. Semco Maritime will lead the engineering, procurement, and commissioning of the main MV/HV electrical systems and auxiliary platform systems, supported by its long-term partner ISC Consulting Engineers.
The Formosa 4 OSS EPC Contract Signing held on 25th September 2025 at Ho Chi Minh City, Vietnam
PTSC M&C will oversee the jacket EPC scope; procurement of remaining topside equipment and materials, and fabrication of the topside, all at its yard in Vung Tau, Vietnam.
“Semco Maritime and PTSC M&C are excited to be awarded the Formosa 4 substation. We are proud that SRE has entrusted our consortium with this project, and we will draw on our joint experience in Taiwan to deliver a stellar result and contribute to the continued development of the Taiwanese offshore wind industry”, says Mr. Thomas Thomsen - Senior Vice President Renewables of Semco Maritime.
“This project marks another successful milestone for PTSC M&C and Semco Maritime. It is our honour to be trusted by SRE to contribute to such an important project in Taiwanese offshore wind industry. Our strong partnership and collaborative spirit will remain as the key to ensuring the project’s success”, says Mr. To Ngoc Tu, PTSC M&C’s Managing Director.
Alongside with the previous wining projects, Formosa 4 marks the consortium’s third OSS project contracted in Taiwan, follows the successful delivery of Hai Long OSS project and the on-going Feng Miao OSS project. With all projects on track, the Formosa 4 contract solidifies the Semco Maritime-PTSC M&C consortium as a trusted contractor in the offshore wind supply chain and sustainability in the region.
For further information, please contact
Mr. Thomas Thomsen, Senior Vice President Renewables, Semco Maritime, +45 30 38 64 24
Mr. Le Quang Hieu, Deputy Managing Director, PTSC M&C, +84 2543 838 834
About Semco Maritime
A fossil-free future calls for a sustainable energy transition where conventional and renewable energy sources coexist effectively until the day when renewables can fully keep the world running. Semco Maritime is an international engineering and contracting company with 2,300 employees and 40 years of dedication rooted in both the conventional energy sector and the offshore wind industry. This puts us in a unique position to bridge today's and tomorrow’s solutions, constantly seeking clever and pragmatic ways to realise global energy ambitions. We do this through comprehensive project management across all phases of energy projects together with world-leading partners across the globe. www.semcomaritime.com
PTSC M&C, a subsidiary of PTSC Corporation which is in turn a member of Vietnam Oil & Gas Group (PetroVietnam), is the leading EPCIC contractor in Vietnam in the offshore Oil & Gas and Renewables Energy sectors. To date, PTSC M&C has successfully delivered more than 80 projects in and outside Vietnam.
