Core Viewpoint - The first "AC to DC" transmission transformation project in China, the ±200 kV Yangzhou-Zhenjiang DC transmission phase I project, has successfully transmitted over 10 billion kilowatt-hours of electricity, significantly contributing to energy structure optimization and low-carbon development in the Yangtze River Delta region [1][3]. Group 1: Project Achievements - The project has delivered an electricity equivalent to the annual consumption of approximately 3 million households, replacing about 950,000 tons of standard coal and reducing carbon dioxide emissions by 2.55 million tons [1]. - Since its operation began in April 2024, the project has become a vital artery for the transmission of wind and solar energy from northern Jiangsu, enhancing the clean energy consumption capacity of the Jiangsu power grid [5]. Group 2: Technical Innovations - The project employs innovative "AC to DC" technology, increasing the transmission capacity from 500,000 kW to 1,200,000 kW, allowing for efficient and precise delivery of clean energy [5]. - The project has been operational for over 20 months, with an average daily transmission of approximately 25.5 million kilowatt-hours, alleviating the pressure on renewable energy output in northern Jiangsu [5]. Group 3: Future Developments - The phase II of the Yangzhou-Zhenjiang DC project is nearing completion and is expected to be operational by February this year, while the phase III is in the research phase, projected to be completed by 2028 [7]. - The State Grid Jiangsu Electric Power Company plans to develop additional "embedded" DC transmission projects, such as the Nantong to Suzhou cross-river DC transmission project, to further support integrated development in the Yangtze River Delta and contribute to the construction of a new power system [7].

Core Insights - The first "AC to DC" project in China, the Yangzhou-Zhenjiang ±200 kV DC transmission first phase project, has delivered 10 billion kWh of renewable energy, equivalent to the annual electricity consumption of approximately 3 million households, replacing about 950,000 tons of standard coal and reducing CO2 emissions by 2.55 million tons, significantly supporting energy structure optimization and low-carbon development in the Yangtze River Delta region [1][2] Group 1 - The Yangzhou-Zhenjiang DC transmission project was initiated in December 2022 to address the insufficient transmission channels between renewable energy generation in northern Jiangsu and the load centers in southern Jiangsu [1] - The first phase of the project, operational since April 2024, has become a vital artery for the transmission of wind and solar energy across the Yangtze River, utilizing innovative "AC to DC" technology to increase transmission capacity from 500,000 kW to 1,200,000 kW [1] - The project has been running safely for over 20 months, with an average daily transmission of approximately 16 million kWh, effectively alleviating the transmission pressure from renewable energy-rich areas in northern Jiangsu [1] Group 2 - The second phase of the Yangzhou-Zhenjiang DC project is nearing completion and is expected to be operational by February [2] - The third phase is currently in the research phase, with an expected completion date in 2028 [2] - Future plans include the construction of additional "embedded" DC transmission projects, such as the Nantong to Suzhou DC transmission project, to contribute to the integrated development of the Yangtze River Delta and the establishment of a new power system [2]