Eos Energy Investor Presentation Deck

Path to Profitability Z3 Cost Walk from Launch to Scale Cross functional Cost & Density Improvement Program (CDIP) 19 Overhead Direct Labor Materials 100% 31% 21% 48% Z3 Launch -4% + Alternative Materials + Increased Cell Energy + Higher Module & Enclosure Energy R&D -7% + System Energy Density + Digital Capabilities Engineering -25% + Strategic Agreements + Deflation + Insourcing + Volume Leverage + Manufacturing Automation + Improved Yield -44% -20% 1% 19% Z3 @ Scale Labor / OH Materials Supply Chain Operations Forecasted 18-month launch to scale roadmap delivering expected 80% $/kWh cost reduction eos

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