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Core Viewpoint - The successful commissioning of the Hainan 500 kV main grid project marks a significant advancement in Hainan's energy infrastructure, enhancing the province's energy capacity and supporting the development of the Hainan Free Trade Port [5][22]. Group A: Project Overview - The Hainan 500 kV main grid project, with an investment of 5.7 billion yuan, took 21 months to complete and spans 14 cities and counties, creating a "口" shaped energy artery [5][15]. - This project represents a historic leap from a 220 kV to a 500 kV network operation, significantly improving the energy backbone of Hainan [6][14]. Group B: Challenges and Solutions - The construction faced unique challenges, including crossing 211 facilities and multiple ecological protection zones, which required innovative solutions such as the use of aerial cableways for material transport [6][11]. - A total of 159 government-enterprise coordination meetings were held to address construction challenges, resulting in the resolution of 71 major issues [10]. Group C: Technological Innovations - Advanced technologies, including heavy-duty drones and smart cableway systems, were employed to enhance construction efficiency while minimizing ecological impact [11][12]. - The project incorporates a digital grid infrastructure that utilizes new digital technologies for comprehensive monitoring and management throughout its lifecycle [17]. Group D: Energy Capacity and Resilience - The new grid's single-line transmission capacity exceeds 3.5 million kilowatts, which is 4 to 5 times that of the previous 220 kV lines, effectively creating a "power ring road" for Hainan [15]. - The design of the grid adheres to the highest standards for typhoon resistance, significantly improving the grid's disaster resilience [16]. Group E: Support for Clean Energy Transition - The project aligns with Hainan's goal of becoming a clean energy island, with projections indicating that by November 2025, clean energy will account for 87.1% of installed capacity and 73.03% of total generation [19]. - The grid will facilitate the large-scale development of offshore wind farms and distributed solar projects, ensuring efficient integration of clean energy sources [20]. Group F: Strategic Importance - The project enhances Hainan's connectivity to the national power market, allowing local clean energy to be distributed nationwide and facilitating the import of clean energy from inland regions [20]. - The successful operation of the 500 kV main grid is seen as a cornerstone for the high-quality development of Hainan's Free Trade Port, supporting various strategic industries [21][22].