Posted on July 22, 2026
DEME has been awarded a substantial¹ contract for the transport and installation of foundations for phase 1 of the Zeevonk offshore wind project in the Netherlands. Zeevonk, jointly owned by Vattenfall and Copenhagen Infrastructure Partners (CIP) through its Energy Investment Fund I, will have a total installed capacity of approximately 1 GW. Under the contract, DEME will be responsible for intermediate transport of monopiles, marshalling services for primary and secondary steel, plus transport and installation of 69 monopile foundations as well as the installation of a filter layer for scour protection.
The Zeevonk project is planned off the Dutch North Sea coast between 63 km and 84 km from the town of Bergen aan Zee. Zeevonk represents a significant step forward in the continued expansion of offshore wind capacity in the Netherlands, contributing to the country’s ambitious energy transition targets. Offshore construction is scheduled to start in 2028. The project remains subject to a final investment decision.
The works will be executed using several vessels from DEME’s fleet, including floating offshore transport & installation vessel Orion for monopile installation, supported by a jack-up offshore transport & installation vessel for secondary steel and a fallpipe rock transport & installation vessel for scour protection.
Felix Würtenberger, CEO of Zeevonk, said: “Developing a project of this scale requires strong partnerships and deep offshore expertise. DEME has a proven track record in offshore wind and we are pleased to welcome them to Zeevonk. This contract marks another important milestone as we continue to advance the project and work towards delivering one of the Netherlands’ next large-scale offshore wind projects.”
Strong partnership in offshore wind
Bas Nekeman, Business Unit Director Northern Europe, said: “We are excited to build on our strong partnership with Vattenfall and Copenhagen Infrastructure Partners, the joint owners of Zeevonk, who have placed their trust in DEME. As the Netherlands continues to be a key market for offshore wind, Zeevonk will play a crucial role in advancing the energy transition. We look forward to bringing our expertise and capabilities to support the successful delivery of this landmark project, together with our supply chain partners.”
This contract further reinforces DEME’s position as a leading offshore wind contractor in Europe and beyond, supporting the development of large-scale renewable energy projects and contributing to a sustainable future. Since 2000 DEME has built the largest track record in the installation of foundations and offshore infrastructure across multiple offshore wind projects around the world.
About DEME
DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, dredging and marine infrastructure, and environmental remediation. DEME also engages in concessions activities in offshore wind, marine infrastructure, green hydrogen, and deep-sea mineral harvesting. The company can build on 150 years of experience and is a front-runner in innovation and new technologies. DEME’s vision is to work towards a sustainable future by offering solutions for global challenges: climate change, a growing population and urbanization, increasing maritime trade, and environmental issues. With a team of approximately 6,000 highly skilled professionals and one of the most advanced fleets in the world, DEME is well-positioned to tackle even the most complex projects. DEME realized a turnover of 4.2 billion euros with an EBITDA of 931 million euros in 2025. For more information, please visit www.deme-group.com.
