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Medium-and Heavy-Duty Electric Vehicle Charging

NREL is working with other national labs to develop a megawatt-scale charging system for medium- and heavy-duty electric vehicles, enabling drivers to charge in less than 30 minutes at reasonable cost. 

Researchers are exploring crosscutting factors influencing the effective design and optimization of such a system, including:

Photo of man standing next to school bus in laboratory setting. Bus hood is open and connected to scientific equipment.

  • Load profiles for regional-haul trucks
  • Optimal battery-charge-control algorithms
  • Site-integrated charging for improved operations and equipment costs
  • Thermal challenges associated with cables and connectors
  • High-power conversion equipment
  • Grid impacts of a multi-port, publicly accessible charging station.

Using a combination of real-world truck operations data and truck volume estimations, NREL is developing charge-control strategies for individual vehicles and charging ports to enable multiple vehicles to charge at the same time without overloading the system.


To learn more about NREL's medium- and heavy-duty electric vehicle charging research, contact Andrew Meintz.