Core Viewpoint - Marine energy is becoming a crucial area in international energy competition, with major economies like the EU, UK, and the US aiming to develop it as the next offshore energy industry after wind power. China is accelerating the large-scale development of marine energy, targeting an installed capacity of 400,000 kilowatts by 2030 [1][21]. Group 1: Marine Energy Development - Marine energy, derived from physical ocean processes such as tides, waves, and ocean currents, includes tidal energy, wave energy, temperature difference energy, and salinity difference energy [1]. - China's marine energy utilization is still in the industry cultivation stage, with significant advancements being made in experimental setups to explore the synergy between wind and wave energy [3][5]. - The LHD tidal energy station in Zhoushan has achieved a generation capacity of over 6 million kilowatt-hours, marking a significant milestone in tidal energy development [10][12]. Group 2: Technological Innovations - The LHD tidal energy project employs a modular design that allows for easy maintenance and replacement of components, significantly reducing operational costs [18]. - Advanced technologies have been developed to withstand severe weather conditions, such as typhoons, and to ensure long-term stability in energy generation [15][18]. - The project has seen a reduction in the cost of electricity generation from 106 yuan per kilowatt-hour in its first generation to 1.1 yuan in the fourth generation, with ongoing efforts to further decrease costs [26][30]. Group 3: Future Prospects - A new 100-megawatt tidal energy station is set to begin construction in Zhoushan by the end of this year, which is expected to generate 610,000 kilowatt-hours daily, sufficient for the energy needs of over 8,000 households [21][25]. - The establishment of a "mother port" for tidal energy in Zhoushan aims to create a comprehensive marine energy industry cluster, enhancing the development of technology, equipment, and services [34]. - The continuous operation of the LHD tidal energy generator for over eight years has set a global record, positioning China as a leader in tidal energy technology [32].

Core Viewpoint - The submarine cable industry in China is experiencing rapid growth driven by the expansion of offshore wind power and marine energy development, supported by comprehensive government policies and technological advancements [1][6][12]. Industry Overview - Submarine cables are essential infrastructure for connecting power and communication networks across oceans, categorized into submarine communication cables and submarine power cables [2][3]. - The industry is positioned as a strategic resource for supporting the digital transformation of the marine economy and the construction of a global energy internet [6]. Policy Analysis - China's policies, including the "14th Five-Year Plan" for renewable energy, aim to promote the large-scale development of offshore wind power and marine energy, providing a robust support system for the submarine cable industry [6][10]. Industry Chain - The submarine cable industry chain in China includes upstream raw material supply, midstream cable manufacturing, and downstream installation and operation, with leading companies like Zhongtian Technology, Hengtong Optic-Electric, and Dongfang Cable dominating the market [8][12]. Market Demand - The offshore wind power market is the primary driver of submarine cable demand, with installed capacity expected to grow significantly from 9 million kW in 2020 to 41.27 million kW by 2024, reflecting a compound annual growth rate of 46.33% [10][12]. - Marine energy is also a key market, with a target of 400,000 kW installed capacity by 2030, further expanding the demand for high-end submarine cables [11][12]. Current Industry Status - The submarine cable industry in China is in a phase of technological leadership and market expansion, with a projected market size of approximately 230 billion yuan by 2024 [12]. - The industry has achieved significant technological advancements, including a complete technical system covering voltage levels from 220kV to 500kV [12]. Competitive Landscape - The industry exhibits a concentrated oligopoly structure, with the top three companies—Dongfang Cable, Zhongtian Technology, and Hengtong Optic-Electric—holding a combined market share of 87% [13][14]. - International competitors like Prysmian and Nexans dominate the high-end market, while Chinese companies are expanding into emerging markets in Southeast Asia and Africa [13][14]. Future Development Trends - The submarine cable industry is expected to undergo a transformation towards high-end, intelligent, and green technologies, with a focus on dynamic cables and AI operation systems [16]. - The market is anticipated to expand globally, with emerging scenarios such as submarine data center interconnections and marine observation networks contributing to significant growth [17]. - The industry will evolve towards a collaborative ecosystem, enhancing supply chain resilience and establishing international standards [18][19].

Core Viewpoint - The development of marine renewable energy is crucial for sustainable development, with China making significant strides in the field, particularly in wave energy, tidal energy, and ocean thermal energy conversion [4][12]. Industry Development - Marine renewable energy, including tidal, wave, and ocean thermal energy, is a key focus in international energy research and development [4]. - China ranks first in wave energy, second in tidal energy, and third in tidal range energy installed capacity globally, establishing a solid foundation for large-scale utilization [4]. Technical Support and Infrastructure - The National Ocean Technology Center has established a comprehensive technical support system covering resource assessment, equipment testing, planning, and policy research for marine energy development [4][6]. - The center has developed four national-level marine testing sites, providing specialized testing services for marine energy technologies [9]. Research and Data Collection - Since 2022, the center has focused on large-scale utilization of marine energy, completing nearly 20 voyages and gathering data from 21 observation sites [7]. - The center has expanded its assessment of marine energy resources to cover 3 million square kilometers of jurisdictional waters, enhancing understanding of resource distribution and development potential [7]. Standardization and Policy Development - The center has developed over 30 national and industry standards in the marine energy sector, accounting for 70% of the total standards in this field [11]. - A guiding opinion was issued to promote large-scale marine energy utilization, aiming for an installed capacity of 400,000 kilowatts by 2030 [13][14]. International Cooperation - The center has actively participated in international organizations and forums, enhancing cooperation and showcasing China's commitment to green development [20]. - The establishment of the China Ocean Renewable Energy Management Service Platform facilitates the collection and dissemination of marine energy data and information [19].

Group 1 - The core viewpoint emphasizes the need for high-quality development of the marine economy in China, aiming for a unique path towards maritime strength [1] - In 2024, China's marine economy is projected to exceed 10 trillion yuan for the first time, indicating a strong growth trend in marine industries [1] - The delivery of the first domestically built 16,000 TEU methanol dual-fuel container ship marks significant breakthroughs in the construction of large methanol dual-fuel vessels [1] Group 2 - The "Deep Sea No. 1" Phase II project has achieved full production, with a maximum daily output of 15 million cubic meters, making it the largest offshore gas field in China [1] - The integration of production, learning, and research has enhanced the capability to construct various types of deep-water oil and gas equipment tailored to different oil fields and sea areas [2] - New marine industries, such as marine oil and gas and offshore wind power, are showing positive developments, with continuous breakthroughs in marine pharmaceuticals and biological products [2] Group 3 - The first domestically developed LHD megawatt tidal energy generator is now operational, utilizing a modular technology approach to enhance tidal energy utilization [3] - China is focusing on the large-scale utilization of marine energy, aiming to promote new technologies and models in marine energy development [3] - The establishment of the first marine blue finance platform in Jiangsu aims to address the financing challenges faced by marine enterprises [4] Group 4 - The blue finance platform offers specialized financial products like blue loans and blue insurance, facilitating smoother financing for enterprises [4] - Guangdong province is striving to transition from a marine big province to a marine strong province, aiming to create a modern marine economic development hub [4] - The continuous optimization of marine industry structure and enhancement of technological innovation capabilities are driving forces for China's economic development [4][5]