Investor Presentaiton

Base Rates Regulatory Mechanisms - Electric Subsidiaries¹ Other Regulatory Mechanisms Fuel Alabama Annual base rate (Rate RSE) and clause filings Georgia Three-year base rate case cycle with annual compliance filings Mississippi Annual base rate (PEP-6) and clause filings ECR Fuel Rates Fuel Rates Purchased Power Energy ECR Fuel Rates Fuel Rates Purchased Power Capacity CNP-B Base Rates Energy Cost Management Rates Environmental CNP-C Base/ECCR ECO Rates Ash Ponds CNP-C Base/ECCR ECO Rates Energy Conservation Plant Additions Storm Reserve CWIP (cash recovery) RSE Base/DSM RSE2 Base Rates PEP PEP NDR Base Rates NCCR³ SRR Rates New Plant Certification 1See the Form 10-K for additional information. CNP-A Base Rates Certification Process 2Refers to plant additions that include ordinary extensions of existing systems in the usual course of business that are not recovered through specific regulatory mechanisms 3 Cash recovery of a portion of CWIP financing costs for Vogtle Units 3 & 4 40 40

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