Fourth Quarter 2023 Earnings Review and Business Update

Clean energy transition underpins five- and ten-year capital plans PERCENTAGE OF TOTAL CAPEX 2024-2028(1) PERCENTAGE OF TOTAL CAPEX 2024-2033 Environmental Remediation -3% Coal Maintenance Corp, IT & Cyber ~2% ~4% Gas Gen Maintenance -2% Gas LDC ~7% Hydrogen Capable Gas Gen -7% $73B Grid -50% Regulated Zero- Carbon Generation ~26% (1) Totals may not foot due to rounding DUKE ENERGY FOURTH QUARTER 2023 EARNINGS REVIEW AND BUSINESS UPDATE Environmental Remediation Corp, IT & Cyber ~2% ~3% Coal Maintenance ~1% Gas Gen Maintenance -2% Gas LDC -6% Hydrogen Capable Gas Gen ~6% $170 - $180B Grid ~40% Regulated Zero- Carbon Generation ~40% // 25

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