v3.26.1
Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Current assets:      
Cash, cash equivalents and restricted cash $ 46,269 $ 28,212 $ 58,801
Receivables, net 151,694 258,631 156,728
Current regulatory assets 192,794 179,579 141,744
Inventories 19,330 39,052 19,713
Current environmental allowances 24,242 26,194 20,449
Prepayments and other current assets 61,646 40,768 44,491
Total current assets 495,975 572,436 441,926
Noncurrent assets:      
Property, plant and equipment 8,408,615 8,264,972 7,711,004
Less accumulated depreciation and amortization 2,351,592 2,304,787 2,276,447
Net property, plant and equipment 6,057,023 5,960,185 5,434,557
Goodwill 345,736 345,736 345,736
Regulatory assets 295,865 297,218 309,302
Investments 123,137 121,177 115,784
Environmental allowances 162,151 112,376 111,671
Other 232,187 213,078 186,941
Total noncurrent assets  7,216,099 7,049,770 6,503,991
Total assets 7,712,074 7,622,206 6,945,917
Current liabilities:      
Long-term debt due within one year 4,700 144,700 136,700
Accounts payable 110,742 148,970 107,178
Regulatory liabilities due within one year 156,951 148,584 134,254
Taxes payable 34,359 44,686 53,428
Dividends payable 29,449 28,614 26,563
Accrued compensation 21,409 34,666 20,795
Current environmental obligations 24,086 24,086 19,561
Other accrued liabilities 118,035 110,917 96,312
Total current liabilities  499,731 685,223 594,791
Noncurrent liabilities:      
Long-term debt 2,572,457 2,532,155 2,045,235
Deferred income taxes 454,147 437,286 426,556
Regulatory liabilities 478,405 472,329 468,168
Asset retirement obligations 441,048 431,587 415,137
Environmental obligations 153,741 108,448 93,451
Other 185,623 182,261 170,675
Total noncurrent liabilities  4,285,421 4,164,066 3,619,222
Commitments and contingencies
Stockholders' equity:      
Common stock Authorized - 500,000,000 shares, $1.00 par value Shares issued - 210,349,456 at June 30, 2026, 204,331,170 at June 30, 2025 and 204,382,821 at December 31, 2025 210,349 204,383 204,331
Other paid-in capital 1,580,599 1,476,355 1,472,150
Retained earnings 1,152,426 1,108,894 1,071,909
Accumulated other comprehensive loss (16,452) (16,715) (16,486)
Total stockholders' equity 2,926,922 2,772,917 2,731,904
Total liabilities and stockholders' equity  $ 7,712,074 $ 7,622,206 $ 6,945,917