Chemistry Experts

Josh Ensign

Chief Operating Officer
energy storage , renewability-Operations
United States of America


    Josh Ensign serves as chief operating officer for Proterra. In his role, he leads all of Proterra’s manufacturing operations in Silicon Valley, Southern California and South Carolina, as well as the Procurement, Facilities, IT and HR functions. A U.S. Army veteran and former executive of Honeywell International and Tesla Motors, Ensign’s track record includes leading global operations for 42 factories in 15 countries and managing the supporting supply chains. As vice president of manufacturing at Tesla Motors, Ensign was responsible for all manufacturing activities at the Fremont, California production site. This included the installation of the current Model S high volume production line, the launch of both the dual-motor platform and the Model X, and the establishment of Tesla’s new seat manufacturing facility. Before Tesla, Ensign led global operations in Honeywell International’s automotive and aerospace businesses. Ensign has extensive functional experience in supply chain, logistics, purchasing, and manufacturing and has lived and operated abroad in Germany, Mexico, China and Switzerland. Josh has a bachelor's in engineering from Gonzaga University and an MBA from the University of Southern California.

Research Interest

 Energy Storage, Public Transportation, Renewable Energy, Battery

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