International shipyards are constructing a new generation of specialized vessels designed to support the expanding offshore wind industry worldwide. Chinese shipyard COSCO recently completed the Wind Ace, a jack-up installation vessel commissioned by Danish firm Cadeler, which operates the world’s largest fleet of offshore wind vessels. The new vessel features hybrid design capabilities enabling efficient installation of increasingly large turbine foundations and turbines.
The development of specialized offshore wind vessels marks a significant shift from earlier practices, when the industry relied on construction equipment adapted from oil and gas operations. As turbine sizes and foundation scales have grown substantially, newer generation service operation vessels have become necessary to transport and install these components quickly and safely. Cadeler currently operates 11 vessels with a 12th in development, and expects delivery of its third A-Class vessel later this year.
Cost reductions in offshore wind have progressed significantly, with analysis showing new projects in 2026 achieving levelized costs of energy between $40-50 per megawatt-hour, competitive with natural gas and cheaper than new coal plants. The US Department of Energy projects further cost declines through 2035, with fixed-bottom offshore wind potentially dropping to $53 per megawatt-hour and floating turbine projects decreasing to $64 per megawatt-hour. These improvements stem from larger turbines, more efficient vessels, and technological advances in operations and maintenance.
Industry initiatives have focused on reducing operations and maintenance costs, which represent approximately one-third of offshore wind’s per-kilowatt-hour expenses. The UK-based HOME consortium and Dutch-led FLOW project have developed advanced monitoring systems, robotic inspection technologies, and maritime weather forecasting tools to streamline maintenance operations. A 2024 report indicated early supply chain investments could support cost reductions of up to 14 percent for future projects.
Despite global momentum, the US domestic offshore wind sector has faced significant setbacks. The Trump administration suspended the federal offshore lease program and clawed back funding for seaport improvement projects supporting the industry. However, international development continues unabated, with deployment activities proceeding globally independent of domestic policy changes.