Heavily Laden 40-Footer Averaged 325 Miles per Day
Battery bus manufacturer Proterra has released the results of a 106-day trial of a 40-foot Catalyst FC (fast-charge) bus with King County Metro in Seattle. The vehicle ran 24 hours per day to simulate one year and, with 14,500 pounds of water ballast representing 125% of a normal full load of 77 passengers, logged 32,545 total miles – “nearly twice the distance of standard industry tests at Altoona,” Proterra says. updated April 4
“This was the most rigorous test of its nature ever performed in the industry,” states a release: the vehicle averaged 325 miles each day, with a maximum mileage of 572 miles in one day, and was charged more than 1,750 times during the test period.
“From mid-October to the end of January 2016, the bus achieved 98% uptime,” Proterra says. Average fuel economy was reported at 15 MPGe over the test period, 213% better than King County’s current 40-foot diesels, a figure projected to improve to 18 MPGe at normal loads.
Far Cheaper to Maintain
Total estimated maintenance cost, including parts and labor, was approximately 20¢ per mile, Proterra says, citing national fleet averages of 90¢ for diesel buses, $1 for compressed natural gas buses, and $1.10 for diesel-fueled hybrid electrics.
“The performance of this bus was outrageously great,” Proterra field service technician John Wagner, says in a video report. “Tremendous.”
Proterra uses driveline equipment from UQM Technologies and SCiB brand lithium titanium battery modules from Toshiba (F&F, September 12, 2014).
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Source: Proterra with Fleets & Fuels follow-up