Proterra SPAC Presentation Deck

PROTERRA BUSINESS UNITS PROTERRA POWERED Edmonton Transit Service Customer Case Studies in Fully Integrated Proterra Solutions Edmonton PROTERRA ENERGY FLEET SOLUTIONS ETS Edmonton Transit System Electric Bus, Charging Infrastructure and Charge Management Software Toke Mo April 8, 2021 Edmonton PROTERRA ● TRANSIT Deployment Proterra Transit: 40 electric transit buses • ✓ Proterra Powered: 660 kWh batteries and DuoPower drivetrains Proterra Energy: 4.3 MW of charging hardware Customer Highlights Fully integrated charging solutions First-of-its-kind depot layout and software control systems Optimizes scheduling while lowering demand charges Dominion Energy® Batteries, Drivetrains, Vehicle Controls, and V2G Services TERRA OWER ONTROL YSTEM PROTERRA 60kW eo b501EK SYS PROTERRA V26 60 PROTERRA Ve PROTERRA PROTES PROTE Deployment Proterra Powered: End-to-end electric powertrains for 50 Thomas-built school buses Proterra Powered: 220 kWh batteries, drivetrains and vehicle controls Proterra Energy: Charging infrastructure and V2G services Customer Highlights Dominion Energy is seeking state approval for additional 1,000+ electric school buses over next 5 years Bus batteries utilized as grid resource ✓ Provides backup power, stabilization and load shifting 41

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