1st Quarter Investor Update

Reconciliation of Adjusted Gross Margins ppl (Unaudited) (millions of dollars) KY Three Months Ended March 31, 2023 PA RI KY Adjusted Adjusted Adjusted Operating Adjusted Three Months Ended March 31, 2022 PA Adjusted Operating Gross Margins Gross Margins Gross Margins (1) (2) Other Income Gross Margins Gross Margins Other (1) (2) Income Operating Revenues $ 960 $ 891 $ 565 $ (1) $ 2,415 $ 1,004 $ 775 $ 3 $ 1,782 Operating Expenses Fuel 201 201 212 212 Energy purchases 90 358 286 734 96 256 352 Other operation and maintenance 22 29 8 500 559 24 29 380 433 Depreciation 14 9 290 313 13 6 252 271 Taxes, other than income 43 20 47 110 36 24 60 Total Operating Expenses 327 439 314 837 1,917 345 327 656 1,328 Total $ 633 $ 452 $ 251 $ (838) $ 498 $ 659 $ 448 $ (653) $ 454 (1) Represents amounts excluded from Adjusted Gross Margins. (2) As reported on the Statements of Income. 33

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