Core Insights - The Hainan 500 kV main grid project and the Boao Zero Carbon Demonstration Zone have been selected as part of the "Top Ten Super Projects of Central Enterprises for 2025" by the State-owned Assets Supervision and Administration Commission [2] Group 1: Hainan 500 kV Main Grid Project - The project is set to be fully operational by December 15, 2025, and is a key initiative under the national "14th Five-Year" power development plan [2] - It aims to enhance energy security and support the development of a new power system, providing a robust backbone network for clean energy development and digital economy growth [2] - The project will create a "口" shaped main grid covering the entire Hainan province, significantly improving resource optimization and risk resilience of the local power grid [2] - It will facilitate the safe delivery and high proportion consumption of clean energy sources such as nuclear, solar, and wind power [2] - The project incorporates digital twin technology to serve as a model for building a green, low-carbon, and efficient modern energy system [2] Group 2: Boao Zero Carbon Demonstration Zone - The Boao Zero Carbon Demonstration Zone was officially renamed in March 2025 and is recognized as China's first region to achieve overall zero carbon operation through renovation [3] - The project, led by China Ocean Shipping Group, covers 190.15 hectares on Dongyu Island and includes 18 sub-projects focused on green building renovation, renewable energy utilization, and green transportation [3] - Since 2024, the group has implemented measures to eliminate the remaining 3.8% carbon emissions in the area, achieving zero carbon operation and setting a standard for replicable models [3] - The demonstration zone has reached "international first-class, domestic leading" levels, providing a "Chinese solution" for global regional zero carbon goals [3]

Core Viewpoint - The article highlights the completion and significance of ten major engineering projects initiated by central enterprises in China, showcasing their capabilities and contributions to national development and energy security [1][22]. Group 1: Major Engineering Projects - The Longdong-Shandong ±800 kV UHVDC project, completed on May 8, 2025, is a key energy artery for China's "West-to-East Power Transmission," with a total investment of 20.2 billion yuan and a transmission capacity of 8 million kW over a distance of 915 kilometers [3][4]. - The Hainan 500 kV main grid project, fully operational by December 15, 2025, enhances the island's energy security and supports the development of clean energy and digital economy [6]. - The Tianyi IoT platform, launched in December 2025, is the world's largest public utility smart IoT platform, supporting over 700 million users and facilitating the digital transformation of various sectors [8]. - The world's largest computing power network, launched by China Mobile in August 2025, integrates advanced technologies to support national computing power network construction and digital economy development [10]. - The world's first megawatt-level compressed CO₂ thermal energy storage pilot system was completed on September 25, 2025, showcasing advancements in energy storage technology [12]. - The first 700 MW ultra-supercritical circulating fluidized bed boiler, operational since April 17, 2025, represents a significant achievement in clean coal technology [13]. - The Boao Zero Carbon Demonstration Zone, established in March 2025, is China's first region to achieve zero carbon operation through innovative projects [15]. - The Qinling North Slope integrated protection and restoration project, completed on November 30, 2025, focuses on ecological restoration and biodiversity enhancement [18]. - The Urumqi to Yuli Expressway, opened on December 26, 2025, significantly reduces travel time and is a key project in China's transportation strategy [19]. - The first pile foundation fixed offshore photovoltaic project in Yantai, completed on May 27, 2025, is expected to generate 694 million kWh annually, contributing to carbon reduction efforts [21]. Group 2: Future Outlook - Central enterprises are expected to continue their momentum into 2026, planning and initiating more super engineering projects to drive economic development and enhance the quality of life for citizens [22].

Core Viewpoint - The construction and digital upgrade of Hainan's power infrastructure are crucial for supporting the operation of the Hainan Free Trade Port, enhancing energy supply security, and promoting green development [1][2][3]. Group 1: Infrastructure Development - The Hainan 500 kV main grid project, completed on December 15, marks the first provincial digital power grid in China, designed to withstand severe weather and enhance the power supply capacity by over four times, equivalent to adding four efficient power highways [1]. - The project involved an investment of 5.7 billion yuan and the construction of 838 kilometers of new transmission lines, significantly improving the power transmission capability to support future development [1]. Group 2: Digital and Green Transformation - The upgraded digital grid can accurately capture data related to equipment, environment, and weather, addressing the increased electricity demand and complex scenarios post-closure [2]. - Hainan's energy transition aligns with its goal of becoming a clean energy island, with initiatives like the Boao zero-carbon demonstration area and a comprehensive smart grid established by the end of 2021 [2]. Group 3: Renewable Energy Integration - The Hainan power grid company has introduced a "one-stop" grid connection service, reducing connection times by nearly 30%, with renewable energy installations exceeding 12 million kW, making it the largest power source in the province [3]. - The new digital grid significantly enhances the capacity for clean energy, which is vital for attracting high-end industries to the region [3]. Group 4: Service Improvement and Strategic Planning - The company has established mechanisms to improve electricity service for 1,005 major projects, transitioning from reactive to proactive service delivery [4]. - Efforts to streamline high-voltage electricity application processes and achieve over 99% online application rates have resulted in significant cost savings for customers [4]. - The company aims to build a world-class modern power grid in Hainan, focusing on intelligent, green, and high-quality electricity services to support the development of the free trade port [4].

Core Viewpoint - Southern Power Grid plays a crucial role in the construction of Hainan Free Trade Port, marking a significant upgrade in Hainan's power grid with the launch of the 500 kV main network, enhancing the region's energy supply capabilities and supporting the clean energy island initiative [1][3]. Group 1: Infrastructure Development - The 500 kV main network project connects 14 cities and counties in Hainan, achieving a maximum transmission capacity exceeding 3.5 million kW, which is four times that of the previous 220 kV lines [3]. - The project is designed to withstand severe weather conditions, adhering to the highest standards for typhoon resistance, thereby significantly improving disaster resilience [3][5]. - Southern Power Grid has invested a total of 46.5 billion yuan over the past eight years to enhance power supply security and disaster resistance in Hainan, with plans to invest an additional 46 billion yuan during the 14th Five-Year Plan period [1][4]. Group 2: Energy Transition and Future Plans - By 2025, Hainan's clean energy installed capacity is expected to reach 87.1%, with clean energy generation accounting for 73.03% of total power generation, positioning Hainan as a leader in energy transition [4]. - The province aims to achieve a total installed capacity of 48.95 million kW by the end of 2030, with renewable energy sources like wind and solar expected to account for 55% of this capacity [4]. - Southern Power Grid plans to enhance interconnection with Guangdong and develop a flexible power exchange project, which will increase power supply reliability and system resilience by 50% [3][5]. Group 3: Strategic Goals and Support for Development - Hainan's strategic goals include becoming a clean energy island and a demonstration province for new power systems by 2030, with a focus on a power supply system primarily based on renewable energy [4]. - The energy infrastructure is being developed to support the rapid growth in electricity demand, projected to reach 88 billion kWh by the end of the 14th Five-Year Plan, with an annual growth rate of 10.3% [3][4]. - Southern Power Grid is committed to building a robust digital power grid that integrates large-scale offshore wind power and distributed energy resources, ensuring energy security for Hainan's development [5].

Core Insights - The Hainan 500 kV main grid project has been fully put into operation, marking a significant upgrade in the province's power infrastructure, increasing the voltage level from 220 kV to 500 kV for the first time, enhancing power transmission capacity by over 4 times [1][2] - The project includes the construction of three new 500 kV substations and a total of 838 kilometers of transmission lines, which will improve the reliability and safety of power supply across Hainan [1][2] - Hainan's electricity demand is projected to grow rapidly, with the highest power load expected to reach 1,550 MW by 2030, driven by the development of the Hainan Free Trade Port and large-scale clean energy projects [2][3] Investment and Infrastructure Development - The total investment for the Hainan 500 kV main grid project is 5.7 billion yuan, which includes the establishment of five new 500 kV main transformers with a total capacity of 3.75 million kVA [2] - The Southern Power Grid plans to invest 46 billion yuan during the 14th Five-Year Plan period to enhance Hainan's power infrastructure and support capacity, significantly improving interconnection with Guangdong [3] - Future plans include the construction of a third 500 kV AC line connecting Hainan and Guangdong, which will increase the cross-sea transmission capacity by 50% to 1.8 million kW [3]

Core Viewpoint - The Hainan Free Trade Port is set to fully operate with the completion of the Hainan 500 kV main grid project, marking a significant advancement in the region's power infrastructure [1] Group 1: Project Overview - The Hainan 500 kV main grid project has been fully put into operation as of December 15, which is a key project under the national "14th Five-Year" power development plan [1] - The project includes the construction of three new 500 kV substations and new transmission lines that pass through 14 cities and counties, including Haikou, Sanya, Danzhou, and Qionghai [1] Group 2: Infrastructure Impact - The project creates a complete "口" shaped ultra-high voltage ring network structure, representing a historic leap in the voltage level of Hainan's power grid from 220 kV to 500 kV [1] - The power transmission capacity has increased by over four times, allowing for more flexible distribution of electricity across the entire island, enhancing the safety and reliability of power supply [1]

Core Viewpoint - The completion of the Hainan 500 kV main grid project marks a significant upgrade in the province's power infrastructure, enhancing electricity transmission capacity and reliability across the island [1][4]. Group 1: Project Overview - The Hainan 500 kV main grid project includes the construction of three new 500 kV substations and transmission lines spanning 838 kilometers, creating a complete "口" shaped ultra-high voltage network [1][4]. - The project represents a historic leap in voltage level from 220 kV to 500 kV, increasing power transmission capacity by over four times [1][4]. Group 2: Economic Impact - Since the establishment of the Hainan Special Economic Zone, the power grid has undergone multiple upgrades, with the highest electricity load in Hainan projected to grow from 6.87 million kW in 2021 to 8.57 million kW by 2025, a 24.7% increase [2]. - The overall electricity consumption in Hainan is expected to grow at an average annual rate of 10.3% during the 14th Five-Year Plan period, with a forecasted peak load of 15.5 million kW by 2030 [2]. Group 3: Future Developments - The project is part of a broader strategy to enhance the reliability and adaptability of the power system in response to increasing electricity demand from large-scale clean energy projects [4][6]. - The Southern Power Grid plans to invest 46 billion yuan during the 14th Five-Year Plan to improve Hainan's power infrastructure and disaster resilience, aiming for a power supply capacity that exceeds maximum load by 1.25 times by 2030 [9].

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].

Core Viewpoint - The commissioning of the 500 kV main grid project in Hainan marks a significant upgrade in the province's power transmission capacity, enhancing it by over four times and integrating digital technology across the grid [1] Group 1: Project Overview - The 500 kV main grid project is the first of its kind in China to apply digital technology across the entire provincial grid [1] - The total investment for the project is 5.7 billion yuan, which includes the construction of three new 500 kV substations and 838 kilometers of new transmission lines [1] - The project creates a complete "口" shaped ultra-high voltage ring network, allowing for flexible power distribution across the island [1] Group 2: Future Projections - By 2030, Hainan's peak electricity load is expected to reach 15.5 million kilowatts, with an average annual growth rate of 10.3% in electricity consumption during the 14th Five-Year Plan period (2026-2030) [1] - The Southern Power Grid plans to invest 46 billion yuan during the 14th Five-Year Plan to enhance Hainan's power infrastructure and disaster prevention capabilities [2] - The construction of a new 500 kV cross-sea interconnection line between Hainan and Guangdong is planned, which will increase the power exchange capacity between the two regions by 50% [1]

Core Viewpoint - The commissioning of the 500 kV main grid project in Hainan marks a significant leap in the province's power grid capabilities, supporting the "Five Directions to Strengthen" strategy and the construction of a clean energy island [1][2]. Group 1: Investment and Development - Since the launch of the Hainan Free Trade Port in 2018, China Southern Power Grid Company has invested a total of 46.5 billion RMB in Hainan's power grid development [2]. - During the 14th Five-Year Plan period (2026-2030), an additional investment of 46 billion RMB is planned to upgrade the Hainan power grid, focusing on enhancing interconnection with Guangdong, power supply security, and disaster resilience [2]. Group 2: Infrastructure and Capacity - The newly operational 500 kV main grid features an innovative "口" shaped topology connecting 14 cities and counties, with a maximum transmission capacity exceeding 3.5 million kW, which is over four times the capacity of the previous 220 kV lines [3]. - The project has been optimized for disaster resistance, meeting the requirements for protection against once-in-a-century typhoons, significantly enhancing its disaster resilience [3]. Group 3: Clean Energy Goals - Hainan aims to establish a clean energy island by 2030, with a power supply system primarily based on renewable energy, supported by nuclear and thermal power [3]. - By November 2025, the proportion of clean energy installed capacity in Hainan is expected to reach 87.1%, with the generation share at 73.03%. By the end of 2030, the total installed capacity is projected to reach 48.95 million kW, with renewable energy accounting for 55% of the installed capacity and 30% of the generation [3]. Group 4: Future Outlook - China Southern Power Grid Company plans to strengthen the main grid in Hainan, coordinating the large-scale development of coastal nuclear and offshore wind power, thereby enhancing the reliability of power supply across the island [5].