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Berlin – June 6, 2017 – Today, the Charging Interface Initiative (CharIN e.V.), an international organization developing and establishing the Combined Charging System (CCS) as the standard for charging battery-powered electric vehicles of all kinds, announced that Proterra, the leading innovator in heavy-duty electric transportation, has become its first North American electric bus company member.

Proterra joined CharIN to help ensure heavy-duty electric vehicle needs are considered in charging infrastructure standardization discussions domestically and around the globe.  The company brings to CharIN transit design, manufacturing and charging expertise, as well as extensive real-world operations experience that will complement and supplement the strong CharIN roster of members and partners.

Already, Proterra vehicles have proven themselves with over more than 3.3 million miles of service. Leveraging passenger market volumes for improved reliability, reduced costs and increased compatibility in fleet yards and across transit agencies, Proterra has built a strong foundation to further inform heavy-duty CCS adoption.

By joining CharIN, Proterra is demonstrating its commitment to the development and extension of a successfully established standard.  Ryan Popple, CEO, Proterra said, “We’re no longer at the dawn of the electric mass transportation revolution, we’re in the midst of it.  We will continue to do our part as the North American market leader and champion innovation throughout the electric mobility ecosystem.”

About the Charging Interface Initiative
The Charging Interface Initiative e. V. (CharIN e. V.)  is a registered association founded by Audi, BMW, Daimler, Mennekes, Opel, Phoenix Contact, Porsche, TÜV SÜD and Volkswagen. Based in Berlin, it is open to all interested parties.  CharIN e.V.’s primary aims are: 1) to develop and establish the Combined Charging System (CCS) as the standard for charging battery-powered electric vehicles of all kinds 2) to draw up requirements for the evolution of charging-related standards and to develop a certification system for use by manufacturers implementing the combined charging system in their products.  For more information, visit

About Proterra:
Proterra is a leader in the design and manufacture of zero-emission heavy-duty vehicles, enabling bus fleet operators to significantly reduce operating costs while delivering clean, quiet transportation to local communities across the United States. With more than 400 vehicles sold to 38 different municipal, university, and commercial transit agencies in 20 states, Proterra is committed to providing state of the art, high-performance vehicles to meet today’s growing market demand. The company’s configurable Catalyst platform is capable of serving the full daily mileage needs of nearly every U.S. transit route on a single charge. With unmatched durability and energy efficiency based on rigorous U.S. certification testing, Proterra products are proudly designed, engineered and manufactured in America, with offices in Silicon Valley, South Carolina, and Los Angeles. For more information, visit: and follow us on Twitter @Proterra_Inc.

Proterra Media Contact:
[email protected]