Core Viewpoint - The implementation of vehicle-to-grid (V2G) technology in China is entering a new phase with the launch of pilot projects in nine cities, showcasing the potential for electric vehicles to interact with the power grid and contribute to energy management [1][2]. Group 1: Vehicle-to-Grid Technology - Vehicle-to-grid (V2G) technology allows electric vehicles to act as mobile energy storage units, charging during off-peak hours and discharging during peak hours, thus aiding in energy consumption and alleviating grid pressure [1]. - In Shanghai, a smart charging network with a capacity of 300,000 kW and V2G discharge capability of 20,000 kW has been established, demonstrating the practical value and potential of V2G technology [1]. Group 2: Challenges and Solutions - Many electric vehicles currently lack reverse charging capabilities, and the high cost of V2G charging station construction limits widespread adoption [2]. - Addressing concerns about battery safety and lifespan due to frequent charging and discharging is crucial for encouraging participation from electric vehicle owners [2]. - Innovative solutions, such as a new control module for retrofitting old charging stations, have been implemented in 19 locations in Shenzhen, saving hundreds of thousands of yuan in renovation costs [2]. Group 3: Growth of Charging Infrastructure - By the end of 2024, the total number of charging facilities in China is expected to reach 12.818 million, a year-on-year increase of 49.1% [3]. - The average utilization rate of public charging stations remains low, highlighting the urgency to optimize resource allocation and ensure that the growing number of charging stations is effectively utilized [3]. - Projections indicate that by 2030, the number of electric vehicles in China could exceed 100 million, potentially providing around 1 billion kW of grid adjustment capacity [3].

Core Viewpoint - The article highlights the successful implementation of vehicle-to-grid (V2G) technology in nine cities in China, showcasing the potential for electric vehicles to act as mobile energy storage units, benefiting both vehicle owners and the power grid [1][4][19]. Group 1: Vehicle-to-Grid Technology - V2G technology allows electric vehicles to return energy to the grid, functioning as mobile "charging treasures" that can store energy during low demand and supply it during peak demand [4][19]. - The interaction between electric vehicles and the grid can help alleviate power supply pressures and promote the consumption of renewable energy [4][14]. Group 2: Market Dynamics and Participation - As of the end of 2024, the number of electric vehicles in China is expected to reach 31.4 million, with charging infrastructure totaling 12.818 million units, reflecting a year-on-year growth of 49.1% [6]. - Charging operators are incentivizing participation through discounts and subsidies, allowing vehicle owners to benefit from reduced charging costs and potential earnings from energy supply [8][9]. Group 3: Economic Impact - The implementation of V2G technology is projected to generate significant economic benefits, with estimates indicating that the annual response to valley filling in five provinces could exceed 10 million kilowatt-hours [17]. - The Southern Power Grid has reported that the vehicle-grid interaction could facilitate the consumption of 8 million kilowatt-hours of renewable energy, generating over 5 million yuan in revenue for participants [14]. Group 4: Technological Advancements - New control modules are being developed to enhance the functionality of existing charging stations without requiring complete replacements, leading to significant cost savings [15]. - Companies like Shenzhen Yingfeiyuan Technology Co., Ltd. have made breakthroughs in high-efficiency bidirectional charging technology, achieving over 50% market share in international markets [20]. Group 5: Future Prospects - The article emphasizes the transition of the electric vehicle industry from merely producing vehicles to providing comprehensive system solutions, indicating a shift in production relationships [19]. - The collaboration between power companies and automotive manufacturers aims to commercialize V2G applications across various scenarios, including community and public transport systems [19].