Zero Emission Bay Area (ZEBA) Fuel Cell Bus Demonstration Results : Fourth Report
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Zero Emission Bay Area (ZEBA) Fuel Cell Bus Demonstration Results : Fourth Report

Filetype[PDF-2.39 MB]


English
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  • Creators:
  • Corporate Creators:
    National Renewable Energy Laboratory (U.S.)
  • Corporate Contributors:
    United States. Dept. of Energy. Energy Efficiency and Renewable Energy
  • Subject/TRT Terms:
  • Publication/ Report Number:
    NREL/TP-5400-63719
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    National Renewable Energy Laboratory (U.S.)
  • Abstract:
    This report presents results of a demonstration of fuel cell electric buses (FCEB) operating in Oakland, California. Alameda-Contra Costa Transit District (AC Transit) leads the Zero Emission Bay Area (ZEBA) demonstration, which includes 12 advanced-design fuel cell buses and two hydrogen fueling stations. The FCEBs in service at AC Transit are 40-foot, low-floor buses built by Van Hool with a hybrid electric propulsion system that includes a US Hybrid fuel cell power system and EnerDel lithium-based energy storage system. The buses began revenueservice in May 2010. The ZEBA demonstration is the largest FCEB demonstration in the United States and involves five participating transit agencies. The ZEBA partners are collaborating with the U.S. Department of Energy (DOE) and DOE’s National Renewable Energy Laboratory (NREL) to evaluate the buses in revenue service. NREL has been evaluating FCEBs under funding from DOE and the U.S. Department of Transportation’s Federal Transit Administration (FTA). NREL uses a standard data-collection and analysis protocol originally developed for DOE heavy-duty vehicle evaluations. NREL has published three previous reports—in August 2011, July 2012, and May 2014—describing operation of these buses. New results in this report provide an update covering data from November 2013 through December 2014. The focus of this evaluation is to compare performance of the FCEBs to that of conventional technology and to track progress over time toward meeting the technical targets set by DOE and FTA. In the commercialization process that begins at technology readiness level (TRL) 1—basic research/concept—and ends at TRL 9—commercial deployment, NREL considers the ZEBA buses to be at TRL 7. At this point of development, the manufacturers’ goals for the demonstration are to verify that the FCEB performance meets the technical targets and identify any issues that need to be resolved. NREL collects data on two different conventional bus types for a baseline comparison at AC Transit: Van Hool diesel buses that are the same model as the FCEBs and newer Gillig diesel buses.
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