Core Viewpoint - The article discusses the innovative "reverse discharge" initiative implemented in Chengdu to alleviate the pressure on the power grid during periods of extreme heat, utilizing public buses as mobile power sources [1][6]. Group 1: Initiative Overview - Chengdu has introduced a "reverse discharge" initiative where public buses can discharge their remaining electricity back to the grid to help manage peak electricity loads [1][6]. - The initiative is part of a broader "vehicle-to-grid" project supported by national authorities, allowing buses to use surplus energy after daily operations [6][9]. Group 2: Operational Details - Buses in Chengdu can charge up to over 300 kWh during off-peak hours and typically have around 100 kWh of surplus energy available for discharge after daily operations [8][9]. - The operation of buses aligns with the city's peak electricity demand, effectively creating a "peak shaving" effect [9]. Group 3: Infrastructure and Impact - Chengdu's public transport system consists of 7,000 buses, which can act as mobile power sources, providing emergency power supply during significant events or natural disasters [11]. - The city has established two demonstration stations equipped with 52 bidirectional smart charging and discharging terminals, facilitating the support of other electric vehicles and promoting efficient use of green energy [13][15].