Proterra SPAC Presentation Deck

PROTERRA OVERVIEW Commercial Vehicle Batteries Must Overcome Significant Technical Challenges Proterra's Battery Technology Is Optimized to Excel on the Factors Most Critical to Commercial Vehicles April 8, 2021 Safety Reliability ISO 26262 Passive propagation resistant • Extended 12-year warranty Ballistic-grade enclosure Life PROTERRA Cost 4,000 cycles Designed to outlast the 12-year life of a vehicle Compelling TCO today • <$20M Capex per GWh Energy Density PROTERRA • Maximizes passenger/cargo capacity Increases range and vehicle efficiency ● Manufacturability • 675 MWh capacity GWh per 50k sq. ft. 17

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