Proterra Investor Presentation Deck

Scalable Manufacturing Footprint to Support Growth Established Production Facilities Enables Rapid Expansion in Capacity¹ BURLINGAME, CA ● ● AOS Dedicated to Proterra Powered vehicle batteries Integrated R&D and testing center Start of production: 2017 GREENVILLE, SC © 2023 Proterra. All Rights Reserved. ● ● ● Flagship bus manufacturing facility Drivetrain and high-voltage junction box production Start of production: 2011 ★ GREER, SC¹ ● ● Next-generation battery facility Drivetrain and ancillary component production Start of production: January 2023 PROTECH Multiple GWh of Annual Battery Capacity Installed² + -250 Electric Transit Buses (per 8 hour shift) PROTERRA 1. Announced plans in January 2023 to close the City of Industry facility with all Proterra Transit electric bus production to be consolidated at its Greenville facility by the start of Q2 2023. The City of Industry's battery production will be consolidated at Powered 1 (Greer, South Carolina) by the end of Q3 2023 2. Based on capacity of manufacturing equipment installed and does not take into account labor 17

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