1. Contact Us |
  2. Careers

On Route Charging Station

Fastfill Charging Station

About the On Route Charging Station

Proterra’s on-route charging station technology offers the most rapid and convenient method for charging heavy-duty vehicles. Proterra’s system allows a battery electric bus to pull into a transit center terminal or on-route stop and automatically connect to an overhead system that links the bus to a high-capacity charger without driver involvement. The bus is then rapidly charged in 5-10 minutes while passengers load and unload. The charging station technology includes advanced wireless controls that facilitate the docking process and eliminate any intervention from the driver. The driver merely pulls into the transit terminal as they normally would, the wireless controls identify that this is the right type of bus and automatically guides and connects the bus with the charging station.

One advantage to the dedicated duty cycle of a fleet vehicle is that the vehicle returns every hour or two to a fixed location (often known as a “layover”) for the operator to take a break and to realign the schedule with the fixed route times. These layovers are typically 10-20 minutes long and are the perfect “opportunity charge” locations for Proterra’s fast charge system.

Proterra’s FastFill™ charge system is comprised of the software and hardware to rapidly charge the TerraVolt™ Energy Storage System from 0% to 95% with >92% energy charge efficiency in as little as 6 minutes. While such power transfer normally might require a substantial grid connection to feed the fast charge rate, Proterra’s proprietary architecture allows for lower cost and lower impact grid connections while maintaining high charge rates.


The combination of Proterra’s TerraVolt™ Energy Storage and ProDrive systems with its FastFill™ Charge Stations provide a solution to fleet vehicle operators with the following results:

  • Ability to use battery-electric vehicles as a one-to-one replacement of a diesel driven vehicle for heavy-duty routes spanning the entire day by eliminating the need to return to vehicle depot for battery charging throughout the day
  • Reduces the cost of zero-emission fleets given lower individual vehicle and infrastructure cost versus the high-cost hydrogen alternative
  • Lowers on-board energy requirements, given opportunity charging capability resulting in lower individual vehicle weight and investment cost
  • Significantly reduces maintenance costs resulting from absence of mechanical parts in battery-electric drive system
  • Extremely wide approach and departure tolerances which enable on-route placement of charging stations