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Echelon utilization of retired electric bus batteries: Economic and environmental potential

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Listed:
  • Xu, Wenzhu
  • Guo, Wentong
  • Gao, Kun
  • Yang, Chengcheng
  • Shangguan, Yidan
  • Yin, Yexing
  • Yao, Wenbin
  • Jin, Sheng

Abstract

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.

Suggested Citation

  • Xu, Wenzhu & Guo, Wentong & Gao, Kun & Yang, Chengcheng & Shangguan, Yidan & Yin, Yexing & Yao, Wenbin & Jin, Sheng, 2026. "Echelon utilization of retired electric bus batteries: Economic and environmental potential," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 209(C).
    • Handle: RePEc:eee:transe:v:209:y:2026:i:c:s1366554526001171
    DOI: 10.1016/j.tre.2026.104778
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