Long Duration Energy Storage Systems for a Cleaner Future

ESS' Robust Revenue Growth Projected Revenue by Product Offering ($in millions) EC EW EF Services $1,645 $2,572 $3,562 $803 $300 $2 $37 2021E 2022E 2023E 2024E 2025E 2026E 2027E Market Share % 0% 0% 1% 2% 4% 6% Note Total addressable market value for the microgrid, distributed energy and utility industries from Guidehouse Insights. RESSI INC ☐ Growth accelerates as Energy Center deployments start in 2023 Forecast driven by identified pipeline of near-term opportunities ESS expansion into Australia (2023) and Europe (2024) supports continued growth Energy Franchise lease and Services revenue streams become bigger contributors as ESS expands CONFIDENTIAL | 32

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