News and Press Releases
14 November 2017
TPI Expands its Strategic Relationship with Proterra to Manufacture Composite Bus Bodies

TPI Composites, Inc. announced that it has entered into a new, five-year supply agreement with Proterra Inc. to be the supplier of composite bus bodies for Proterra’s Catalyst® zero-emission electric buses from its existing Rhode Island manufacturing facility and from a new U.S. manufacturing facility in Newton, Iowa that TPI expects to open in the first half of 2018.  Under this supply agreement TPI will provide capacity for up to 3,350 bus bodies over the five-year period. 

“We are excited to expand our relationship with Proterra and to support Proterra’s continued growth in the electric bus market as well as continue to demonstrate TPI’s deep advanced composite technology capabilities across multiple industry segments,” remarked Steve Lockard, TPI’s President and CEO.

The composite structure utilizes a combination of reinforcement materials including fiberglass and carbon fiber that enable a lightweight body structure that weighs thousands of pounds less than conventional metallic space frames. The lower mass composite body structure is one factor that enables Proterra to provide industry-leading range for its battery-electric vehicles.  Composite structures provide additional performance advantages with enhanced durability and reduced maintenance costs, by providing a corrosion-free solution.

“As cities and municipalities throughout North America transition to zero-emission buses, TPI’s expanded manufacturing footprint and advanced composites technology will help us to scale the production of our electric buses and cost-effectively serve our California and South Carolina factories in the United States,” said Ryan Popple, CEO of Proterra. 

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