Core Viewpoint - The rapid growth of the electric vehicle (EV) market in China and advancements in smart grid technology have led to increased emphasis on vehicle-grid interaction as a flexible regulation method for the power system [1][2]. Group 1: Vehicle-Grid Interaction - Vehicle-grid interaction is gaining attention as a means to enhance the flexibility of the power system, with various regions conducting pilot applications for orderly charging and reverse discharging [1][2]. - Orderly charging is a key aspect of vehicle-grid interaction, with time-of-use pricing policies being implemented to guide EV users to charge during periods of ample electricity supply, thereby alleviating grid pressure [1]. - For instance, in Shanghai, the off-peak price for residential charging stations is 0.331 yuan per kilowatt-hour, which is about 52% of the peak price, effectively reducing the strain on the grid [1]. Group 2: Reverse Discharging - Reverse discharging from EVs is crucial for vehicle-grid interaction, allowing for the utilization of idle energy storage resources and enhancing the flexibility of the power system [2]. - Shandong Province has introduced the first public scenario vehicle-grid interaction pricing policy based on the spot market, allowing EV charging facility operators to voluntarily participate and reflect real-time supply-demand relationships [2]. - The extension of reverse discharging pricing mechanisms to residential charging stations in Shandong represents a significant step in activating distributed energy resources and promoting renewable energy consumption [2]. Group 3: Future Development - Future efforts should focus on optimizing pricing mechanisms to promote the large-scale industrial development of vehicle-grid interaction [3]. - Continuous improvement of time-of-use pricing mechanisms is necessary to encourage low-cost charging during off-peak hours and enhance the regulation capabilities of EVs [3]. - Local governments are encouraged to explore and refine reverse discharging pricing mechanisms to fully reflect the regulatory value of EVs and tap into the potential of distributed energy resources [3].