Proterra Investor Presentation Deck

Integrated Vehicle-to-Grid Software Heavy-Duty Vehicles Can Be Transformed into Utility Grid Assets to Lower Total Cost of Ownership VEHICLE DATA (kWh, miles, SOH) ELECTRIC MOBILE ENERGY STORAGE PROTERRA POWERED Bi-Directional Power flow (DC) © 2022 Proterra. All Rights Reserved. VALENGE CLOUD ENERGY MANAGEMENT Charge session metrics www mmmmm m I Command charge/discharge PROTERRA BI-DIRECTIONAL CHARGER PROTERRA ENERGY COMMAND & SCHEDULE Charge Session Metrics Bi-Directional Power flow (AC) PROTERRA Fleet and Energy Management # ART Initial customers include the two largest planned V2G programs in the U.S.: Highland Electric and Dominion Energy ENERGY GRID 16

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