Investor Presentaiton

7) ESG Commitment: Solar Initiative $536K Existing Est. Annual Savings $1.1M Expected Est. Annual Savings Highlights(1) $4.5M $10.7M 34 Existing Investment Expected Investment Live Solar Sites 29 Pipeline Sites 34 Live PTO Sites SmartStop Self Storage REIT, Inc. ...The Smarter Way to Store! 63 Expected Solar Sites Actual GWh Production 4.4GWh Cumulative Production 7.4 GWh Expected Production Kilowatts 1,830 25 25 14 532 11 460 Western U.S. Central U.S. 781 807 5 31 Eastern U.S. 2020 2021 2022 1Q23 2Q23 3Q23 (1) Includes wholly-owned and joint venture operating assets of 9/30/23. Western U.S. includes Arizona and California. Central U.S. includes Colorado, Illinois, Indiana, Michigan and Texas. Eastern U.S. includes Florida, Maryland, Massachusetts, North Carolina, South Carolina, New Jersey and Virginia. Investor Presentation | 25

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