Volta SPAC Presentation Deck

Volta's Current Unit Economics: Stations grow in value as the network scales Cumulative Cash Flow per Station $600,000 volta $450,000 $300,000 $150,000 $0 -$150,000 Tortoise Acquisition Corp.Il 1 2 3 6-7X ROI on Current 4 5 Development (Years) 6 7 20 8 9 10 CURRENT¹ L2 UNIT ECONOMICS 46% 3.4YRS Payback Period IRR CURRENT¹ DCFC UNIT ECONOMICS 45% 3.8YRS IRR Payback Period Cumulative Cash Flow - Current L2 Cumulative Cash Flow - Current DCFC 1: Current unit economics are based on historical performance and 2021 network assumptions. Source: Company projections.

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