CTE will manage an award supporting the continued operation of AC Transit’s 12 fuel cell bus fleet through 2016. The grant provides extended support for warranties that began expiring in August of 2013. The AC Transit fuel cell bus fleet entered operation in 2010 and has since accumulated 29,649 fuel cell hours over 286,934 miles. The fuel cell buses have provided an 83% increase in the fuel economy over the control diesel fleet. This grant will allow these buses to continue to operate for a total of six years of continuous demonstration, providing critical operational and maintenance cost data on performance over time, and fuel cell, battery and drive system durability.