Proterra Investor Presentation Deck

Battery Technology Designed to Accelerate Adoption Each new generation targets higher energy density and lower costs 2017 3rd Generation First to market with NCM 811 18650 cells New core single module architecture © 2022 Proterra. All Rights Reserved. 2020 O PROTERRA POWERED H SERIES SI SERIES 4th Generation Higher energy density 2170 cells Flexible module platform (7 variants) 2022 PROTERRA POWERED 5th Generation New 2170 cell chemistry on same module platform Increase in energy density Higher tooling investment CONFIDENTIAL PROTERRA New Platform Objectives Centralized architecture Chemistry agnostic Further increase in energy density Greater scale and vertical integration 14

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