v3.26.1
Consolidated Statements of Financial Position - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Electric plant    
In service $ 6,096,878 $ 6,075,291
Construction work in progress 173,101 143,940
Total electric plant 6,269,979 6,219,231
Less allowances for depreciation and amortization (2,950,073) (2,913,707)
Net electric plant 3,319,906 3,305,524
Other plant 803,430 853,410
Less allowances for depreciation, amortization and depletion (723,868) (760,477)
Net other plant 79,562 92,933
Total property, plant and equipment 3,399,468 3,398,457
Other assets and investments    
Investments in other associations 193,561 194,825
Investments in and advances to coal mines 1,436 1,533
Restricted cash and investments 1,953 2,137
Intangible assets, net 154,218 157,915
Other noncurrent assets 14,724 14,674
Total other assets and investments 365,892 371,084
Current assets    
Cash and cash equivalents 144,136 177,557
Restricted cash and investments 18,020 1,111
Deposits and advances 32,299 32,620
Accounts receivable—Utility Members 86,635 83,743
Other accounts receivable 54,911 32,892
Coal inventory 113,409 124,170
Materials and supplies 104,718 109,146
Total current assets 554,128 561,239
Deferred charges    
Regulatory assets 851,785 853,834
Deferred Income Tax Assets, Net 254 0
Other 77,112 58,546
Total deferred charges 929,151 912,380
Total assets 5,248,639 5,243,160
Capitalization    
Patronage capital equity 913,050 917,276
Accumulated other comprehensive loss 1,602 1,545
Noncontrolling interest 129,812 130,132
Total equity 1,044,464 1,048,953
Long-term debt 2,931,082 3,093,216
Total capitalization 3,975,546 4,142,169
Current liabilities    
Utility Member advances 11,032 10,383
Accounts payable 118,503 129,552
Short-term borrowings 204,292 100
Accrued expenses 22,960 28,717
Current asset retirement and environmental remediation obligations 143,798 136,501
Accrued interest 41,254 22,632
Accrued property taxes 30,711 33,505
Current maturities of long-term debt 80,471 80,052
Total current liabilities 653,021 441,442
Deferred credits and other liabilities    
Regulatory liabilities 331,339 358,446
Deferred income tax liability 0 (254)
Asset retirement and environmental remediation obligations 191,116 200,267
Other 88,227 91,880
Total deferred credits and other liabilities 610,682 650,339
Accumulated postretirement benefit and postemployment obligations 9,390 9,210
Total equity and liabilities $ 5,248,639 $ 5,243,160