Fast Charge Battery Electric Transit Bus In-Use Fleet Evaluation

Robert Prohaska, Kenneth Kelly, Leslie Eudy

Research output: Contribution to conferencePaperpeer-review

22 Scopus Citations


The focus of this interim fleet evaluation is to characterize and evaluate the operating behavior of Foothill Transit's fast charge battery electric buses (BEBs). Future research will compare the BEBs' performance to conventional vehicles. In an effort to better understand the impacts of drive cycle characteristics on advanced vehicle technologies, researchers at the National Renewable Energy Laboratory analyzed over 148,000 km of in-use operational data, including driving and charging events. This analysis provides an unbiased evaluation of advanced vehicle technologies in real-world operation demonstrating the importance of understanding the effects of road grade and heating, ventilating and air conditioning requirements when deploying electric vehicles. The results of this analysis show that the Proterra BE35 demonstrated an operating energy efficiency of 1.34 kWh/km over the data reporting period.

Original languageAmerican English
Number of pages6
StatePublished - 22 Jul 2016
Event2016 IEEE Transportation Electrification Conference and Expo, ITEC 2016 - Dearborn, United States
Duration: 27 Jun 201629 Jun 2016


Conference2016 IEEE Transportation Electrification Conference and Expo, ITEC 2016
Country/TerritoryUnited States

Bibliographical note

See NREL/CP-5400-66098 for preprint

NREL Publication Number

  • NREL/CP-5400-67516


  • battery electric bus
  • drive cycle
  • EV
  • fast charge
  • heavy duty
  • transit
  • zero emissions


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