v3.26.1
CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Property, plant and equipment:    
Plant in service $ 10,249,993 $ 10,252,773
Construction work in progress 929,635 778,763
Less: accumulated provision for depreciation and amortization (4,422,530) (4,375,917)
Net property, plant and equipment 6,757,098 6,655,619
Other assets and investments:    
Mine related assets 164,030 166,561
Investments in associated companies 36,760 37,024
Restricted and designated investments 60,107 61,362
Other investments 141,213 138,624
Special funds 69,885 69,564
Total other assets and investments 471,995 473,135
Current assets:    
Cash and cash equivalents 622,221 685,570
Restricted and designated cash and cash equivalents 303,190 301,923
Short-term investments 0 630
Inventories 380,396 358,812
Prepayments and other current assets 117,901 118,837
Total current assets 1,772,718 1,785,408
Deferred charges and other:    
Regulatory assets 303,826 311,373
Other noncurrent assets 177,015 172,122
Total deferred charges and other 480,841 483,495
Assets 9,482,652 9,397,657
Equity:    
Memberships 22 22
Patronage capital 1,584,817 1,523,238
Retained earnings of subsidiaries 157,776 142,776
Other equity 293,040 294,252
Accumulated other comprehensive income 7,113 13,463
Equity attributable to parent 2,042,768 1,973,751
Noncontrolling interest 3,027 2,676
Total equity 2,045,795 1,976,427
Long-term debt, net of current portion 4,937,383 4,949,264
Finance lease obligations 3,459 3,532
Total Capitalization and Liabilities 6,986,637 6,929,223
Commitments and contingencies (Note 15)
Current liabilities:    
Long-term debt and finance leases due within one year 176,900 177,134
Accounts payable 319,472 421,715
Other current liabilities 302,690 196,460
Total current liabilities 1,451,050 1,429,804
Deferred credits and other:    
Regulatory liabilities 331,776 336,305
Deferred income tax liability 92,872 90,922
Other noncurrent liabilities 620,317 611,403
Total deferred credits and other 1,044,965 1,038,630
Total Capitalization and Liabilities 9,482,652 9,397,657
Related Party    
Current assets:    
Receivables, net 223,807 202,408
Current liabilities:    
Notes payable 176,988 159,495
Nonrelated Party    
Current assets:    
Receivables, net 125,203 117,228
Current liabilities:    
Notes payable $ 475,000 $ 475,000