Echelon utilization of retired electric bus batteries: Economic and environmental potential
研究评估了退役电动公交车电池在储能场景中的梯次利用潜力，以温州为例，发现到2035年每年可提供超1.9 GWh容量，减少居民用电碳排放10%，并创造超6亿元年收益。
The rapid deployment of electric bus fleets introduces dual pressures on grid stability and sustainable battery retirement. Harnessing the residual capacity of retired batteries through echelon utilization presents a strategic pathway toward circular economy and carbon neutrality. This study presents an integrated multi-model framework combining vehicle behavior simulation, battery degradation modeling, retirement flow forecasting, and benefits analysis to evaluate the echelon utilization potential and economic-environmental benefits of deploying electric bus second-life batteries (EBSLBs) in energy storage scenarios. A case study of Wenzhou, China, demonstrates that over 1.9 GWh of EBSLBs capacity will become available annually by 2035. Leveraging these energy storage resources to store curtailed renewable energy and manage peak power loads can reduce per capita carbon emissions from urban residential electricity consumption by 10%, and generate annual economic revenues exceeding ¥600 million, thus enhancing urban energy resilience and supporting low-carbon development.