Fourth Quarter 2023 Earnings Review and Business Update

Safe Harbor statement This presentation includes forward-looking statements within the meaning of the federal securities laws. Actual results could differ materially from such forward- looking statements. The factors that could cause actual results to differ are discussed herein and in Duke Energy's SEC filings, available at www.sec.gov. Regulation G disclosure In addition, today's discussion includes certain non-GAAP financial measures as defined under SEC Regulation G. A reconciliation of those measures to the most directly comparable GAAP measures is available in the Appendix herein and on our Investor Relations website at www.duke-energy.com/investors. DUKE ENERGY. FOURTH QUARTER 2023 EARNINGS REVIEW AND BUSINESS UPDATE || 2

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