Renewable Energy Integration in Electric Vehicle Parking Lots: Improved Priority Rule and Cost Reductions

Strategic Insights -

Researchers at Tsinghua University have proposed an innovative approach to operating electric vehicle (EV) parking lots with integrated renewable energy and battery storage systems. The study, published in the IEEE Transactions on Transportation Electrification, aims to mitigate the uncertainty associated with vehicle arrival times, charging demands, and renewable output. By implementing an improved priority rule based on vehicle charging deadlines and remaining energy needs, the research suggests significant cost reductions of up to 10% in charging strategies.

Key Takeaways:

  • The study proposes an improved priority rule that outperforms existing charging policies, particularly when charging power is continuously adjustable.
  • The proposed rule determines the total charging demand and battery dispatch, significantly reducing the decision space and enabling effective estimation of charging and dispatch decisions using the experience-driven K-nearest neighbor (KNN) method.
  • Experimental results on real-world data show that the proposed KNN-integrated priority rule achieves cost reductions of up to 10%, with online simulation further boosting performance by an additional 10%.
  • The study suggests that the improved priority rule can simplify the decision-making process, allowing for prediction-free operation and reduced dependence on extensive historical data.
  • The research has been peer-reviewed and published in the IEEE Transactions on Transportation Electrification.
  • The study was conducted by a team of researchers led by Wei Wei from Tsinghua University, in collaboration with Runze Liang, Feng Liu, and Zhaojian Wang.

Statistics:

  • Up to 10% cost reduction in charging strategies using the proposed KNN-integrated priority rule
  • Additional 10% performance boost with online simulation
  • Simplified decision-making process with reduced dependence on historical data
  • Up to 12235 pages in the IEEE Transactions on Transportation Electrification publication
  • November 2025 issue of the IEEE Transactions on Transportation Electrification

Sources:

  • "Online Operation of Renewable Energy and Battery Integrated Electric Vehicle Parking Lots With an Improved Priority Rule" (IEEE Transactions on Transportation Electrification, 2025; 11(5): 12222-12235)
  • Tsinghua University
  • Wei Wei (lead researcher)
  • Runze Liang (researcher)
  • Feng Liu (researcher)
  • Zhaojian Wang (researcher)