Core Viewpoint - The South China Sea is identified as a region rich in marine renewable energy resources, including wind, wave, tidal, and temperature difference energy, which presents significant development potential for optimizing energy structure and ensuring energy security in Guangdong, Guangxi, and Hainan provinces [1] Policy Guidance and Practical Progress - The three provinces have established a multi-layered policy support system focused on offshore wind energy while exploring diversified marine energy development [3] - Guangdong aims to strengthen offshore wind power bases in cities like Yangjiang and Shantou, while Guangxi focuses on developing offshore wind power and exploring advanced technologies [3] - Hainan is leveraging its free trade port status to accelerate the construction of offshore wind and distributed photovoltaic projects [3] Development Status and Achievements - By 2025, Guangdong's offshore wind power installed capacity is expected to exceed 12.5 million kilowatts, ranking first in the country [4] - Guangxi has achieved a breakthrough in offshore wind power with its first demonstration project, generating over 1.4 billion kilowatt-hours [4] - Hainan has initiated large-scale offshore wind power development with several projects achieving full capacity grid connection [4] - Wave energy development has seen significant advancements, including the world's first megawatt-level floating wave energy device [4] Challenges and Constraints - There is insufficient regional coordination among the three provinces, leading to fragmented resource development and risks of redundant construction [6] - Core technology and equipment for floating wind power are still reliant on imports, and there is a gap in performance compared to international standards [7] - The industrial chain in Guangxi and Hainan is not fully developed, with low localization rates for key components and equipment [7] - Conflicts between development and ecological protection are becoming more pronounced, with potential long-term impacts on marine ecosystems [7] Strategic Solutions and Recommendations - A systematic approach is needed to plan the development of marine wind and renewable energy, emphasizing unified planning and collaborative implementation [9] - Optimizing spatial layout to create a gradient development pattern is essential, with Guangdong extending nearshore wind clusters into deeper waters [9] - Strengthening technological innovation and self-sufficiency in equipment is crucial, with the establishment of a collaborative innovation community among the three provinces [10] - Building a modern marine wind and renewable energy industrial chain that leverages regional advantages and enhances cooperation is necessary [10] - Promoting regional interconnectivity and establishing green collaborative mechanisms to address power consumption and transmission bottlenecks is vital [11]

Core Viewpoint - The National Ocean Technology Center has successfully conducted tests on floating multi-energy complementary devices, focusing on single unit and array performance, highlighting the potential of combined offshore wind and wave energy generation as a promising direction for marine renewable energy development [1] Group 1: Testing Achievements - The center completed tests on the conversion efficiency and operational response of single units, as well as energy conversion performance of various array combinations [1] - The testing addressed key industry challenges related to optimizing single unit performance and collaborative operation of arrays [1] - A breakthrough in non-contact six-degree-of-freedom testing technology was achieved, allowing precise measurement of 13 target bodies across three generating devices [1] Group 2: Future Directions - The test results provide a scientific basis for optimizing and upgrading the devices, laying a solid foundation for the engineering application of multi-energy complementary technology [1] - The center plans to continue innovating marine energy testing technologies to support the high-quality development of the clean energy industry [1]