v3.25.2
Consolidated Statements of Revenues and Expenses (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating revenues:        
Total operating revenues $ 633,748 $ 564,090 $ 1,311,324 $ 1,100,404
Operating expenses:        
Fuel 186,838 148,463 429,485 315,509
Production 157,956 148,919 288,284 267,009
Depreciation and amortization 107,341 103,949 213,598 198,054
Purchased power 22,109 19,202 43,840 38,422
Accretion 14,607 18,417 29,139 36,039
Total operating expenses 488,851 438,950 1,004,346 855,033
Operating margin 144,897 125,140 306,978 245,371
Other income:        
Investment income 8,047 15,900 16,544 32,952
Other 492 2,943 4,051 5,747
Total other income 8,539 18,843 20,595 38,699
Interest charges:        
Interest expense 135,537 129,720 267,971 259,111
Allowance for debt funds used during construction (4,991) (12,722) (8,719) (46,829)
Amortization of debt discount and expense 2,595 2,794 5,020 5,498
Net interest charges 133,141 119,792 264,272 217,780
Net margin 20,295 24,191 63,301 66,290
Sales to members        
Operating revenues:        
Total operating revenues 601,690 562,267 1,269,991 1,097,637
Sales to non-members        
Operating revenues:        
Total operating revenues $ 32,058 $ 1,823 $ 41,333 $ 2,767