The 40-foot Catalyst buses have a range capacity spanning from 62-350 miles per charge (nominal range), with a quick charging time of just 10 minutes. Maintenance costs of all-electric buses are expected to decline versus hybrid-diesels, primarily because they have fewer moving parts.

The 73 battery-electric buses from Proterra will cost up to $55 million, starting with 20 buses totaling $15.12 million. Charging stations to support the initial orders of those buses will range from $5.5 million to $6.6 million.

Federal funding often helps pay for Metro’s new bus purchases. Last year, King County Metro received a $3.3-million grant from the Federal Transit Administration’s Low-or No-Emission Vehicle Deployment Program to help fund some new battery buses and charging stations for three buses that are in operations on the eastside of King County.

Metro will also acquire up to nine long-range electric buses from different manufacturers to test the battery technology with a range of about 140 miles. With this approximately $7-million acquisition, Metro is challenging the industry to produce buses that can travel farther. Metro also is calling on the industry to develop 60-foot long buses, better able to replace the articulated buses that make up 55 percent of its fleet.

Each battery bus reduces tailpipe greenhouse gas emissions by an estimated 65 tons each year, the equivalent of 21 cars off the road. The new buses run cleaner, quieter, and reduce dependence on fossil fuels. Cutting diesel emissions also means better air quality, benefiting people with asthma and other health issues.

Metro is a leader in clean technology. It was the first transit agency to adopt diesel-electric hybrids, and it currently operates more than 170 electric trolley buses. By committing to replacing its current fleet with clean vehicles, Metro is influencing the development and expansion of the all-electric bus market.

Transportation is the region’s largest source of greenhouse gas emissions, emitting nearly half of all greenhouse gas emissions. The County’s Strategic Climate Action Plan calls for both increased transit service and a cleaner fleet to reduce greenhouse gas emissions. The new battery bus technology will reduce Metro’s fuel use as it provides more service to customers.

To better serve our customers, we want battery buses that travel longer distances and can carry more people. We’re committed to expanding our battery bus fleet, and need the industry to accelerate development of standardized battery bus charging systems so they can work flexibly for any bus route, and also build more 60-foot-long articulated buses—which serve as the transit workhorses in King County.

—Rob Gannon, Metro Transit General Manager

In conjunction with this battery bus order, Metro is conducting a comprehensive analysis of the best approach for achieving a zero-emissions fleet. A Battery Bus stakeholder group is advising on the approach and priorities for achieving a zero emissions fleet.