Proterra SPAC Presentation Deck

PROTERRA OVERVIEW PROTERRA POWERED Home T Edmonton Transit Service Customer Perspective: Proterra Delivers Fully Integrated Solutions ETS Edmonton Transit System Electric Bus, Charging Infrastructure and Charge Management Software CO Edmonton PROTERRA Take Me TRANSIT January 2021 Edmantan PROTERRA ENERGY™ FLEET SOLUTIONS 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 STROOL BUS POV CON SYS PROTERRA V2G Ase 60 POWER CONTE SYSTE PROTERRA 60 120 OH PROTERRA PROTERRA 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 23

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