Eos Energy Investor Presentation Deck

Gen 2.3: The Last 12 Months Rapidly ramped production to deliver largest customer project to date March 2022 New manufacturing facility construction begins; 2 welders online 11 (1) From 4/2022-3/2023 (2) Completed on April 25, 2023 34k+ Batteries produced 1 eos eos 208 Energy Blocks shipped 1 46 MWh Completed 4-hour cycle on Pine Gate Eastover system 2 eos 18 April 2023 Transitioning manufacturing to Eos Z3TM; Gen 2.3 manufacturing limited to service / spares eos

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