Proterra Investor Presentation Deck

Execution on Production and Delivery Growth for Years Though the COVID-19 Pandemic and Supply Disruptions Impacted Transit Production in 2020-22 75 2018 MWh Battery Production 107 2019 111 2020 189 2021 © 2023 Proterra. All Rights Reserved. 342 2022 3 2018 Powered Battery System Deliveries¹ 20 2019 107 2020 273 2021 1. Exclusive of batteries produced for Proterra Transit electric transit buses 2. Not inclusive of pre-owned bus deliveries 1,229 2022 135 2018 Transit Bus Deliveries² 177 2019 170 2020 208 PROTERRA 2021 199 11 2022 21

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