
Core Viewpoint - The "vehicle-grid interaction" initiative in Guangzhou allows electric vehicle owners to sell stored energy back to the grid during peak hours, providing economic benefits and alleviating grid pressure [2][3]. Group 1: Vehicle-Grid Interaction - The pilot program enables electric vehicle owners to charge their vehicles during off-peak hours and discharge energy back to the grid during peak hours, resulting in financial gains for users [2]. - The program is particularly beneficial for two groups: commuters who can discharge during peak parking hours and those who primarily use their vehicles on weekends [5]. - The initiative is expected to enhance grid stability by utilizing the stored energy in electric vehicles, which can help in peak shaving and valley filling [5]. Group 2: Battery and Energy Storage Potential - The lithium iron phosphate batteries used by GAC maintain over 80% capacity after 3,000 charge-discharge cycles, indicating untapped potential even at the end of their lifecycle [2]. - With approximately 3 million electric vehicles in Guangdong, the total vehicle-mounted energy storage capacity is estimated to be around 200 million kilowatt-hours [2]. - The average electric vehicle can store enough energy to power ten 1-horsepower air conditioners for six hours, showcasing the significant energy storage potential of electric vehicles [5]. Group 3: Regulatory and Market Developments - The Guangdong Provincial Development and Reform Commission has set a feed-in tariff for electric vehicles discharging to the grid, with peak prices reaching approximately 0.96 yuan per kilowatt-hour during summer months [3]. - The Guangdong grid company plans to establish a "vehicle-grid interaction" alliance, aiming to involve major automakers and operators, with expectations of over 600,000 electric vehicles participating in grid regulation by 2028 [6].