Proterra SPAC Presentation Deck

A PROTERRA BUSINESS UNITS Zoeu-Emiton 4ATPERECTRICE SHOW FLYSUC.COM PROTERRA ENERGY™ FLEET SOLUTIONS PROTERRA POWERED Proterra Energy: Commercial Vehicle Charging is Challenging and Underserved $37Bn of Annual Investment Expected in Global Charging Infrastructure by the End of the Decade ¹ April 8, 2021 PROTERRA TRANSIT Charging is Key to Electrify Commercial Vehicle Fleets... ...and Represents a Large, Underserved Market Hundreds of vehicles per depot, each requiring 75-300 kW of charging power High Power Needs Continuous Service Operational Constraints ● ● ● Peak power of up to -30 MW per depot, multiples of typical interconnection Commercial vehicles operate every day, with consistently high charging needs 99%+ uptime is expected, reliability is a must even with untrained operators Must conform to existing high-density fleet yard layouts Must support grid stability Must seamlessly integrate into normal-course operations Fleet Depots 1. Refer to Index on page 66 for additional information 2. Refer to Index on page 66 for additional information 3. Refer to Index on page 66 for additional information 4. Refer to Index on page 66 for additional information En-Route Top-Ups Destination Charging · PROTERRA ● Over 1.4MM vehicles managed by US fleet operators ² Focus: lowering TCO across vehicles and chargers Over 300,000 truck parking spaces across the U.S. ³ Focus: integration with existing infrastructure Significant Market Opportunity Requiring a Multidisciplinary Approach Over 250,000 warehouses in the U.S. 4 Focus: integration of charging with logistical activities 32

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