Solid Power DCRC+ Financial Overview

Solid Power Manufacturing Process Savings Eliminating formation cycling is crucial to the ASSB process Conditioning ☐ ☐ Pre-formation Aging Degassing Formation Final storage Eliminated 29% 1% 10% 11% 5% 2% 1% 2% 2% 2% 5% 17% Filling Eliminated Source: Argonne National Lab and Solid Power. Solid Power DCRC Removal of 80% of Conditioning steps Conditioning Appendix Final storage Eliminates ~29% of capex in a typical GWh-scale Li-Ion production plant ■Receiving and shipping ■Materials preparation ■Electrode coating ■ Calendering ■Materials handling 18% Electrode slitting ■Vacuum drying "The largest contributor to processing cost during battery production is the electrolyte interphase formation step... This process may take up to three weeks, requiring a tremendous number of cycles, floor space and intense energy for the cyclers and environmental chambers." ■Control laboratory ■Cell assembly in dry room ■Formation cycling and testing ■Module and pack assembly ■Rejected cell and scrap Oak Ridge BatPac - Argonne National Lab OAK RIDGE National Laboratory 50

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