v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Income Statement [Abstract]        
OPERATING REVENUES (Note 4) $ 1,455,749 $ 1,358,751 $ 2,605,346 $ 2,391,031
OPERATING EXPENSES        
Fuel and purchased power 558,498 477,008 995,227 857,079
Operations and maintenance 283,387 286,605 560,087 586,714
Depreciation and amortization 243,226 228,893 483,084 463,833
Taxes other than income taxes 61,684 57,651 123,656 117,005
Other expense 3,282 1,042 6,446 1,626
Total 1,150,077 1,051,199 2,168,500 2,026,257
OPERATING INCOME 305,672 307,552 436,846 364,774
OTHER INCOME (DEDUCTIONS)        
Allowance for equity funds used during construction 17,052 14,767 31,834 28,016
Pension and other postretirement non-service credits, net (Note 8) 5,018 3,692 9,000 6,650
Other income (Note 12) 13,096 12,104 18,077 29,565
Other expense (Note 12) (6,570) (4,259) (9,310) (6,829)
Total 28,596 26,304 49,601 57,402
INTEREST EXPENSE        
Interest charges 133,601 113,527 259,360 218,470
Allowance for borrowed funds used during construction (11,402) (11,559) (21,265) (21,661)
Total 122,199 101,968 238,095 196,809
Income Before Income Taxes 212,069 231,888 248,352 225,367
Income taxes 31,302 35,018 32,471 28,835
Net Income 180,767 196,870 215,881 196,532
Less: Net income attributable to noncontrolling interests (Note 9) 2,193 4,306 4,387 8,612
Net income attributable to common shareholders, basic 178,574 192,564 211,494 187,920
Net income attributable to common shareholders, diluted $ 178,574 $ 192,564 $ 211,494 $ 187,920
Weighted average common shares outstanding — basic (in shares) 121,306 119,517 121,333 119,555
Weighted-average common shares outstanding — diluted (in shares) 124,494 121,865 124,136 121,813
Earnings Per Weighted-Average Common Share Outstanding        
Net income attributable to common shareholders — basic (in dollars per share) $ 1.47 $ 1.61 $ 1.74 $ 1.57
Net income attributable to common shareholders — diluted (in dollars per share) $ 1.43 $ 1.58 $ 1.70 $ 1.54