Investor Presentaiton

Non-GAAP Reconciliations - 2023 Guidance VISTRA CORP. - NON-GAAP RECONCILIATIONS 2023 GUIDANCE FOOTNOTES (Unaudited) (Millions of Dollars) Regulation G Table for 2023 Guidance prepared as of November 4, 2022. (a) Includes unrealized (gain) / loss on interest rate swaps of $36 million (b) Includes nuclear fuel amortization of $105 million (c) Adjustment for bill credits applied to large commercial and industrial customers that curtailed during 2021 Winter Storm Uri (d) Includes state tax payments VISTRA Vistra Investor Presentation/June 2023 51

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