Advent SPAC Presentation Deck

Investment Highlights ADVENT 7 7 Advent is the missing puzzle piece to unlocking the Hydrogen Economy with low-cost energy solutions Sources: Global Data, Bloomberg New Energy Finance. Low cost, fuel-flexible and resilient fuel cell technology - solving the need for expensive hydrogen infrastructure Developing and manufacturing the critical components for high-growth new energy markets, including transportation, off-grid, aviation and the Hydrogen Economy Solving the range and recharge mobility problems with Li-ion batteries given greater energy storage capability Proven, scalable business model that delivers consistent and recurring revenue, with a ~$100m revenue opportunity per 1GW of demand Platform technology provides critical performance benefits for a wide range of end markets, with a total estimated market size of more than 850GW by 2040 7 Experienced management team delivering breakthrough technology in partnership with world class research centers www.advent.energy AMCI ADVENT Acquisition Corp. 5

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