v3.26.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Operating Activities:    
Net income $ 170,927 $ 155,787
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 136,805 123,556
Deferred income taxes and investment tax credits (6,014) (45,251)
Changes in regulatory assets and liabilities 13,180 100,003
Pension and postretirement benefit plan expense 22,494 22,608
Contributions to pension and postretirement benefit plans (4,135) (2,864)
Earnings of unconsolidated equity-method investments (1,990) (2,024)
Distributions from equity-method investments 0 950
Allowance for equity funds used during construction (38,060) (29,608)
Other non-cash adjustments to net income, net 3,227 5,238
Change in:    
Accounts receivable and unbilled receivables (96,112) (28,617)
Prepayments (11,643) 8,428
Materials, supplies, and fuel stock (2,019) (4,803)
Accounts and wages payable (39,147) (47,396)
Taxes accrued/receivable 26,091 37,508
Other assets and liabilities 5,431 7,713
Net cash provided by operating activities 179,035 301,228
Investing Activities:    
Additions to property, plant and equipment, net (808,035) (534,629)
Proceeds from Sale of Other Productive Assets 105,309 62,022
Proceeds from Sale of Intangible Assets 32,138 6,290
Other (8,742) (7,379)
Net cash used in investing activities (679,330) (473,696)
Financing Activities:    
Issuance of long-term debt 350,000 400,000
Discount on issuance of long-term debt (854) (3,072)
Retirement of long-term debt 0 (19,885)
Payments on finance lease liabilities (2,942) (729)
Dividends on common stock (98,034) (93,461)
Issuance of Common Stock 129,357 3,054
Tax withholdings on net settlements of share-based awards (6,118) (3,294)
Other (3,188) (4,522)
Net cash provided by financing activities 368,221 278,091
Net (decrease) increase in cash and cash equivalents (132,074) 105,623
Cash and cash equivalents at beginning of the period 215,718 368,865
Cash and cash equivalents at end of the period 83,644 474,488
Supplemental Disclosure of Cash Flow Information:    
Cash paid for interest (net of amount capitalized) 72,256 61,414
Non-cash investing and financing activities:    
Additions to property, plant, and equipment in accounts payable 238,732 168,635
Right-of-use asset obtained in exchange for finance lease liability $ 0 $ 226,618