Fourth Quarter 2023 Earnings Review and Business Update

FFO to Debt Calculation Duke Energy Indiana (in millions) Year Ended December 31, 2023 Actual Cash From Operations Adjust for Working Capital (1) Coal ash ARO spend Include Capitalized Interest as cost Lease-imputed FFO adjustment (D&A) Funds From Operations Notes payable to affiliates Current maturities of LT debt LT debt LT debt payable to affiliates CRC Underfunded pension 1,107 (11) 81 (21) 14 1,170 256 4 4,348 150 153 2 Lease imputed debt 52 Total Balance Sheet Debt (Including ST) 4,965 (1) Working capital detail, excluding MTM Receivables Receivables from affiliates Inventory Other current assets Accounts payable Accounts payable to affiliates Taxes accrued Other current liabilities (40) (55) (93) 138 (83) 42 (26) 128 FFO / Debt 11 24%

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