Proterra Inc. announced that it is increasing the amount of energy onboard its ZX5 electric transit bus, delivering more battery storage to help transit agencies scale zero-emission bus fleets with electric vehicle technology.

Starting in 2023, the 40-foot Proterra ZX5 Max electric transit bus can be equipped with up to 738 kilowatt hours (kWh) of onboard energy.

Through this enhancement, Proterra transit buses now feature the most energy storage of any 40-foot electric bus available in the North American market, according to the news release.

With 738 kWh of battery energy storage, the ZX5 Max can deliver more than 300 miles of drive range on a single charge, depending on route conditions, configuration, and operation.

In addition, the 35-foot and 40-foot ZX5+ electric bus models can be equipped with up to 492 kWh of onboard energy for routes with less demanding range requirements. 

Designed and manufactured in the U.S., Proterra’s electric transit buses are equipped with the company’s Proterra Powered battery technology systems.

“With historic support behind zero-emission transit, North America is ready to go all-in on electrifying transportation and Proterra technology is here to meet the moment. As public transit accelerates towards zero-emission transportation, we’re excited to bring more energy and innovation to our industry-leading ZX5 electric transit bus to help drive this critical transformation,” said John Walsh, Proterra’s CCO.