Efficient Management of Electric Vehicle Charging Stations: Balancing User Preferences and Grid Demands With Energy Storage Systems and Renewable Energy

Strategic Insights -

Researchers at Griffith University have conducted a study on the techno-economic and environmental impacts of integrating renewable energy sources (RESs) and energy storage systems (ESSs) into electric vehicle charging stations (EVCSs). The study aimed to investigate the load management and operational efficiency of combining RESs and ESSs with ultra-fast direct current chargers (UFCs) in an EVCS. The research found that a hybrid system consisting of RESs, ESSs, and UFCs can effectively reduce grid peak demand, maximize charging sessions, alleviate grid strains, and balance both user and grid charging preferences.

Key Takeaways:

  • The study conducted a hypothetical case study on a commercial Evie network charging station in Australia, with 4 ultra-fast charging ports, to investigate three load management strategies: user-preferred, grid-preferred, and renewable energy resources battery energy storage integrated systems (ReBIS).
  • The research highlights that the ReBIS effectively reduces grid peak demand, maximizes charging sessions, alleviates grid strains, and balances both user and grid charging preferences.
  • The study found that ReBIS with UFCs lowers energy costs by 40%, supports 99.4% of user-preferred charging sessions, and cuts carbon emissions by 63.2% and 65.2% compared to user-preferred and grid-preferred modes, respectively.
  • The results validate ReBIS with UFCs as the optimal load management strategy for EVs, balancing charging demand with grid stability.
  • The study emphasizes the importance of considering load management capabilities and operational efficiency when integrating RESs and ESSs into EVCSs.

Statistics:

  • 40% reduction in energy costs through the use of ReBIS with UFCs
  • 99.4% of user-preferred charging sessions supported by ReBIS with UFCs
  • 63.2% and 65.2% reduction in carbon emissions compared to user-preferred and grid-preferred modes, respectively
  • 4 ultra-fast charging ports at the commercial Evie network charging station

Sources:

  • NewsRx. Investigators from Griffith University Target Renewable Energy (Efficient Management of Electric Vehicle Charging Stations: Balancing User Preferences and Grid Demands With Energy Storage Systems and Renewable Energy). Ecology, Environment & Conservation. September 5, 2025; p 284.
  • Applied Energy. Efficient Management of Electric Vehicle Charging Stations: Balancing User Preferences and Grid Demands With Energy Storage Systems and Renewable Energy. 2025; 393.
  • Griffith University. Mohammad J. Sanjari, Griffith University, School of Engineering and Built Environment, Brisbane, Qld, Australia.
  • Elsevier Sci Ltd. Applied Energy. www.elsevier.com; www.journals.elsevier.com/applied-energy/