Zhejiang Province has unveiled a comprehensive development guideline for its marine clean energy industry, targeting offshore wind, offshore solar, ocean energy, and coastal nuclear power as its four pillar sectors.

According to the Zhejiang Provincial Department of Marine Economic Development, the province aims to accelerate the cultivation of new quality productive forces in the marine sector and build a full-chain marine clean energy industry cluster.

The guideline proposes that by 2030, the province's marine clean energy and equipment industry scale should exceed 300 billion yuan, offshore wind installed capacity should surpass 10 million kilowatts, and a ten-million-kilowatt-class offshore wind base should be completed.

Flagship projects such as wind power home ports are expected to be operational, tidal current energy should achieve hundred-megawatt-level commercial application, offshore solar should realize contiguous "wind-solar co-location" development, and the green hydrogen-ammonia-methanol industry should take initial shape.

The plan also calls for cultivating more than 50 leading enterprises and specialized and sophisticated SMEs in the marine clean energy field, essentially establishing Zhejiang as a national innovation hub, industry cultivation cluster, and integrated development pioneer for marine clean energy.

Offshore Wind Power: Building a Full Industrial Chain

In the offshore wind sector, the guideline emphasizes strengthening the entire industrial chain.

Upstream: Consolidating raw materials and key components. The province will reinforce advantageous segments such as high-voltage submarine cables, glass fiber and composite materials, and large castings, while enhancing supporting capabilities in high-grade marine steel, gear transmission, large-megawatt main bearings, and electrical equipment. Key gaps to be filled include large blades and carbon fiber main beams, as well as high-voltage power devices. Further efforts will strengthen sub-segments including blade structures, transmission and power generation, and submarine cable electrical systems to improve upstream chain completeness and stable supply capacity.

Midstream: Enhancing complete machine manufacturing and engineering integration capabilities. Focus will be placed on developing large-megawatt offshore wind turbines, advancing research and engineering application of floating units, and improving wind resource and sea area survey and design, general engineering contracting, and system integration capabilities. Coordination among turbines, foundation structures, submarine cable electrical systems, and transmission systems will be strengthened, alongside the development of key equipment and systems such as floating foundations, deep-water mooring, dynamic submarine cables, and long-distance transmission.

Downstream: Improving development, construction, and operational services. The province will promote contiguous and large-scale offshore wind project development, refine engineering services including project development and investment, foundation construction, turbine installation, submarine cable and booster station installation, port logistics, and grid connection. Full life-cycle service capabilities will be enhanced, covering wind farm operations, inspection and maintenance, fault diagnosis, spare parts, and major component replacement.

In terms of technology direction, priority will be given to large-scale, lightweight, and typhoon-resistant offshore wind turbine research and development, improving the safe operation and long-term reliability of large-megawatt units under complex sea conditions such as typhoons and strong winds and waves. Research on floating wind technology will be strengthened to improve floating foundation stability, deep-water mooring reliability, and dynamic submarine cable durability. Ultra-long-distance, ultra-high-voltage flexible DC transmission technology will be advanced to improve long-distance transmission efficiency and stable operation of deep-sea wind power. Technologies including long-term anti-corrosion and anti-fouling for marine environments, equipment condition monitoring, fault diagnosis, digital twins, drone and robot inspection, and major component replacement will be developed to enhance intelligent operations and maintenance of deep-sea wind power.

Regarding development and utilization, the province will advance deep-sea site development in a phased manner following the direction of contiguous, large-scale bases, ensuring coordination between near-term demonstration projects and medium-to-long-term reserve projects to form a resource development pattern of stable near-shore development and continuous deep-sea expansion. Integrated development of offshore wind with offshore solar, ocean energy, energy storage, and green hydrogen production will be promoted. Models such as wind-solar co-location, wind-fishery integration, and local green electricity consumption will be explored, expanding application scenarios including green marine fuels and green electricity-powered computing. Offshore green electricity will be extended to sectors such as port shipping, petrochemicals, and coastal manufacturing, improving comprehensive utilization of sea area resources and green energy conversion efficiency.

Offshore Solar: Optimizing the Full Industrial Chain

In the offshore solar sector, the guideline focuses on optimizing the entire industrial chain.

Upstream: Consolidating the foundation of solar manufacturing and electrical equipment. The province will strengthen segments including solar glass, EVA and POE films, backsheets, high-efficiency battery modules, inverters, box transformers, and switchgear and distribution complete sets, while developing marine weather-resistant modules and marine-specific electrical equipment.

Midstream: Enhancing offshore system and engineering construction capabilities. Focus will be placed on developing offshore-specific equipment such as fixed and tracking brackets, floating platforms, floating body structures, and mooring and anchoring systems. Capabilities in sea area survey, system design, general engineering contracting, offshore construction, and electrical installation will be improved, promoting coordinated integration of modules, support systems, electrical systems, and energy storage systems.

Downstream: Improving power station development and operational services. The province will develop offshore solar project development, investment and operation, grid connection, and electricity trading services, while refining operational monitoring, intelligent inspection, fault diagnosis, and safety maintenance systems to enhance long-term operational support for offshore solar.

In terms of technology direction, priority will be given to improving the long-term service performance of solar materials, modules, and electrical equipment under marine environments with high salt spray, high humidity, and strong winds and waves. Research on wind-wave resistance, typhoon resistance, anti-overturning, and long-term anchoring technologies for floating solar will be strengthened to improve floating system stability and durability. Wind-solar joint dispatch and grid connection control technologies will be advanced to enhance coordinated operation capability. Long-term real-sea testing under different sea conditions will be conducted to verify the durability and operational reliability of offshore solar equipment.

Regarding development and utilization, the province will focus on already-developed sea areas such as enclosed aquaculture zones, offshore wind farm areas, and confirmed thermal discharge zones of power plants, promoting pile-fixed and floating solar development according to local conditions. In offshore wind farm areas that meet site selection criteria, floating solar demonstrations will be steadily carried out to expand offshore solar development space. Composite utilization models such as wind-solar co-location, fishery-solar complementarity, and nuclear-solar synergy will be deepened, promoting shared construction of offshore booster stations, transmission cables, energy storage, and maintenance facilities. Application scenarios such as offshore island solar microgrids and supporting power supply for offshore production platforms will be expanded.

Ocean Energy: Cultivating and Expanding the Full Industrial Chain

In the ocean energy sector, the guideline aims to cultivate and expand the entire industrial chain.

Upstream: Consolidating resource exploration and basic supporting facilities. The province will strengthen surveys, exploration assessments, and site design for tidal current, tidal, and wave energy resources, developing basic supporting facilities such as marine corrosion-resistant materials, anti-corrosion coatings, monitoring sensors, generators and power conversion equipment, and dynamic and submarine cables.

Midstream: Enhancing power generation equipment and project construction capabilities. Focus will be placed on developing megawatt-level tidal current power devices, bidirectional large-capacity tidal power units, and wave energy devices such as oscillating water column and point absorber types. Capabilities in power device and platform system integration, general engineering contracting, offshore lifting and deployment, and submarine cable laying will be improved.

Downstream: Improving testing, verification, operations, and supporting services. The province will develop real-sea testing, performance evaluation, testing and certification, project development and operations, home port support, and marine engineering services, while refining professional services including grid connection control, power station dispatch, operation and maintenance, underwater repair, and device recovery.

In terms of technology direction, priority will be given to improving tidal current array coordinated control, power smoothing, and stable grid connection technologies. Research will be strengthened on wave energy efficient conversion, survival in harsh sea conditions, marine-grade sealing, ultra-low-speed power generation, and anti-corrosion technologies for key components. Tidal energy bidirectional large-capacity power generation and power station efficiency enhancement and capacity expansion technologies will be advanced.

Regarding development and utilization, the province will focus on promoting array layout and large-scale demonstration of tidal current units, forming a concentrated zone for tidal current resource development, equipment application, and engineering verification. Leveraging existing tidal power station foundations, tidal energy efficiency enhancement and capacity expansion will be advanced. Combined with wave resource conditions in Zhejiang's offshore waters, wave energy demonstration projects will be laid out in an orderly manner. Integrating scenarios such as island power supply, deep-sea aquaculture, breakwaters, and offshore wind farms, the province will promote coordinated development of tidal current, wave, wind, solar, and energy storage. Exploration will include integrated layout of wave energy devices with wind power foundations, breakwaters, and aquaculture facilities, advancing the connection of ocean energy with island microgrids, offshore integrated energy stations, and off-grid power supply systems to form an application pattern of multi-technology routes and multi-scenario demonstrations.