Table 4 Summary of Results from NREL Fuel Cell Bus Evaluations

Table 4 Summary of Results from NREL Fuel Cell Bus Evaluations

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  Unit  AC TRANSIT
4/06 - 11/06
40-ft Fuel Cell Hybrid
40-ft Diesel
VTA
11/04 - 7/06
40-ft Fuel Cell
40-ft Diesel
SUNLINE
1/06 - 11/06
40-ft Fuel Cell Hybrid
40-ft CNG
Capital ($ mill)        
H2 Fuel Station Installation total not reported $ 0.64 not reported
H2 Depot Modifications total $ 1.50 $ 4.40 $ 0.05
Fuel Cell Bus Purchase ea $ 3.20 $ 3.50 $ 3.10
Fuel Economy        
Duty Cycle MPH 11.6 14.5 13.0
Fuel Cell Fuel Economy mi/kg 5.50 3.12 7.3
Fuel Cell Fuel Economy MPDEG 6.22 3.52 8.28
Diesel Fuel Economy MPG 4.00 3.98 CNG = 3.32
Fuel Cost        
Hydrogen Cost $/kg $ 8.00 $ 9.06 $ 4.26
Diesel Cost $/gal $ 2.30 $ 2.07 CNG = $1.10

  Unit  AC TRANSIT
4/06 - 11/06
40-ft Fuel Cell Hybrid
40-ft Diesel
VTA
11/04 - 7/06
40-ft Fuel Cell
40-ft Diesel
SUNLINE
1/06 - 11/06
40-ft Fuel Cell Hybrid
40-ft CNG
Fuel Cell Diesel Fuel Cell Diesel Fuel Cell CNG
Maintenance Cost              
PMI $/mi $ 0.15 $ 0.08 $ 0.61 $ 0.09 $ 0.05 $ 0.08
Powerplant $/mi $ 0.01 $ 0.10 $ 1.54 $ 0.16 $ 0.11 $ 0.05
Drive System $/mi $ 0.04 $ - $ 0.36 $ 0.02 $ 0.06 $ -
Fuel System $/mi $ 0.01 $ 0.02 $ 0.48 $ 0.02 $ - $ 0.01
TOTAL PROPULSION $/mi $ 0.06 $ 0.12 $ 2.38 $ 0.20 $ 0.17 $ 0.06
NON-PROPULSION $/mi $ 0.54 $ 0.23 $ 1.17 $ 0.34 $ 0.27 $ 0.19
TOTAL $/mi $ 0.60 $ 0.35 $ 3.55 $ 0.54 $ 0.44 $ 0.25

NOTES

AC TRANSIT: Fuel cell maintenance done under warranty - costs not included
Fuel cell bus + 8,000 lb
Van Hool buses. Fuel cell buses use ISE drive system with ZEBRA batteries

VTA: Warranty parts costs not included above: $13.29/mi fuel cell; $0.04/mi diesel
Fuel cell bus + 6,800 lb
Fuel station includes one dispenser and 10 min fill; designed for 6 buses
Fuel station vent and boil off losses ~50%
New Flyer buses. Fuel cell buses use Ballard drive system

SUNLINE: Fuel cell maintenance done under warranty - costs not included
Fuel cell bus + 8,000 lb
Van Hool buses. Fuel cell buses use ISE drive system with ZEBRA batteries
H2 maintenance facility is a tent - two bays

For all agencies maintenance costs calculated using $50/hr mechanic labor rate

SOURCES

AC Transit: NREL/TP-560-41041 March 2007

VTA: NREL/TP-560-40615 November 2006

Sunline: NREL/TP-560-41001 February 2007