Investor Presentaiton

2021 Results Q4 Full Year 2021 2020 2021 2020 Earnings/ (Loss) Per Share As Reported ($0.20) $0.37 $2.26 $2.95 Less: Estimated Loss on Plants Under Construction ¹ ($0.65) ($0.12) ($1.19) ($0.23) Acquisition and Disposition Impacts² $0.11 $0.01 $0.12 $0.04 Wholesale Gas Services $0.06 $0.01 $0.01 Asset Impairments³ ($0.03) ($0.07) ($0.10) Loss on Extinguishment of Debt Earnings Per Share Excluding Items ($0.02) ($0.02) ($0.02) ($0.02) $0.36 $0.47 $3.41 $3.25 1 Includes a charge of $0.65 per share and charges totaling $1.19 per share, associated with the construction of Plant Vogtle Units 3 and 4 for the three and twelve months ended December 31, 2021, respectively. Includes a charge of $0.12 per share and charges totaling $0.23 per share associated with the construction of Plant Vogtle Units 3 and 4 for the three and twelve months ended December 31, 2020, respectively. All periods include charges (net of salvage proceeds), associated legal expenses (net of insurance recoveries), and tax impacts resulting from the abandonment and closure activities associated with the mine and gasifier-related portions of the Kemper IGCC. 2 Represents impacts related to the dispositions of Sequent, leveraged lease investments, a natural gas storage facility, Plant Mankato, and other impacts related to completed dispositions. 3 Includes an impairment charge and related tax impacts totaling $0.06 per share related to the Penn East Pipeline project for the twelve months ended December 31, 2021. Also includes impairment charges related to leveraged lease investments for the twelve months ended December 31, 2021 and for the three and twelve months ended December 31, 2020. 4 Represents costs associated with the extinguishment of debt at Southern Company.. 12 12

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