Stem SPAC Presentation Deck

$ BILLIONS stem Stem is a Market Leader with Significant Scale and Visible Growth Stem is a Leader in Deployments Worldwide(¹) One of the Top Systems Integrators by Disclosed Commissioned Projects 2014-3Q20 Storage Capacity Commissioned (MWh) 0 100 200 300 400 Stem's Total Pipeline Growth 125% Pipeline Growth Since Q3 2019 3.0 2.5 2.0 1.5 1.0 0.5 500 $1.2B 600 Q3 2019 700 stem Tesla, Inc Hyundai Electric Fluence Energy Nidec Corp NEC Corp Mitsubishi Electric +125% $2.7B ● Q3 2020 ● stem S stem 900+ systems operating or contracted (~1 GWh) (²) Systems operating in ● • 75 jurisdictions 200+ cities ● ● ● Confidential stem WINE $800MM Q3 2018 Note: Includes only lithium ion providers. (1) Bloomberg New Energy Finance - Storage Assets Interactive Dataset; Reflects System Integrators by Capacity (MWh), filtered by Commissioning Date and Commissioned Status as of 11/04/2020; Stem data from Company. (2) As of 31-Oct-2020. (3) Wood Mackenzie. 75% BTM market share in California, largest storage market in the US(3) $145MM bookings in 2020E ~4.5x revenue growth in 2021E

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