Long Duration Energy Storage Systems for a Cleaner Future

ESS Wins on Sustainability Sustainability Focus Areas Responsibly Sourced Materials RESS INC Raw ingredients of iron, salt and water are earth-abundant Global Warming Potential (GWP) 67% lower CO2 emissions than Li-Ion¹ Recyclability Contains no toxic materials and requires no special permits for disposal² GHG impact is dependent on specific Li-Ion chemistry. He, H. et al. "Flow Battery Production: Materials Selection and Environmental Impact." Journal of Cleaner Production. Vol. 269. 1 October 2020. Noguera, E., Comparative LCA of stand-alone power systems applied to remote cell towers, 2014. Note 1 2 No hazardous materials compliance plan required. RESS" INC CONFIDENTIAL | 16

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