Long Duration Energy Storage Systems for a Cleaner Future

ESS is a Category Defining Technology for Long Duration Storage RUESSINC ESS INC Li-Ion Li Metal Vanadium, Zinc Bromine Sodium Sulfur Compressed Air Pumped Hydro Low cost at 4 - 12 hours Field proven¹ Earth abundant materials Unlimited cycling Zero capacity fade Wide operational temperature range Environmentally sustainable No fire/ explosion risk Note 1 20 R Internally developed table based on company data and publicly available information. Based on our Generation I products, which are no longer deployed. О О О О О Re 0000000 О О OO о О О CONFIDENTIAL | 17

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