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CONDENSED CONSOLIDATED BALANCE SHEETS - TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Current Assets:    
Cash and cash equivalents $ 28,730 $ 18,256
Accounts receivable 219,248 151,804
Unbilled revenues 90,961 68,214
Other receivables 60,237 53,875
Materials and supplies 201,416 181,316
Regulatory assets 109,835 41,785
Total current assets 759,491 564,662
Other Property and Investments:    
Non-utility property, net 43,745 40,729
Total other property and investments 544,161 546,686
Utility Plant:    
Plant in service and plant held for future use 12,071,216 11,592,121
Less accumulated depreciation and amortization 3,199,975 3,010,588
Net plant in service and plant held for future use 8,871,241 8,581,533
Construction work in progress 938,624 653,206
Net utility plant 9,885,507 9,311,435
Deferred Charges and Other Assets:    
Regulatory assets 928,553 939,249
Goodwill 278,297 278,297
Operating lease right-of-use assets, net of accumulated amortization 46,123 108,517
Other deferred charges 381,978 310,439
Total deferred charges and other assets 1,634,951 1,636,502
Total assets 12,824,110 12,059,285
Current Liabilities:    
Short-term debt 236,000 181,400
Payable 191,816 243,062
Accrued interest and taxes 155,842 124,014
Regulatory liabilities 12,993 11,022
Operating lease liabilities 7,324 8,969
Other current liabilities 146,471 77,610
Total current liabilities 941,421 1,017,537
Long-term debt, net of unamortized premiums, discounts, and debt issuance costs 5,632,794 5,116,026
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 1,026,848 961,230
Regulatory liabilities 780,321 757,319
Asset retirement obligations 260,545 255,097
Operating lease liabilities 34,572 96,735
Other deferred credits 443,689 389,070
Total deferred credits and other liabilities 2,552,383 2,466,187
Total liabilities 9,126,598 8,599,750
Commitments and Contingencies (Note 11)
Common Stockholder’s Equity:    
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares) 2,681,880 2,563,930
Retained earnings 981,775 866,904
Total common stockholder’s equity 3,637,866 3,404,018
Total liabilities and stockholders' equity 12,824,110 12,059,285
Texas-New Mexico Power Company    
Current Assets:    
Cash and cash equivalents 22,200 15,251
Unbilled revenues 26,127 19,690
Other receivables 32,950 22,633
Materials and supplies 57,630 35,653
Regulatory assets 86,645 33,286
Prepaid and other current assets 8,143 5,603
Total current assets 289,530 168,575
Other Property and Investments:    
Non-utility property, net 26,005 21,153
Total other property and investments 26,005 21,153
Utility Plant:    
Plant in service and plant held for future use 4,232,875 4,065,890
Less accumulated depreciation and amortization 742,128 679,035
Net plant in service and plant held for future use 3,490,747 3,386,855
Construction work in progress 423,676 254,810
Net utility plant 3,914,423 3,641,665
Deferred Charges and Other Assets:    
Regulatory assets 119,916 106,458
Goodwill 226,665 226,665
Operating lease right-of-use assets, net of accumulated amortization 312 39
Other deferred charges 32,023 23,163
Total deferred charges and other assets 378,916 356,325
Total assets 4,608,874 4,187,718
Current Liabilities:    
Short-term debt 0 0
Accrued interest and taxes 76,662 72,129
Regulatory liabilities 2,917 2,592
Operating lease liabilities 76 15
Other current liabilities 66,604 14,618
Total current liabilities 190,693 154,898
Long-term debt, net of unamortized premiums, discounts, and debt issuance costs 1,821,527 1,672,267
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 257,961 229,375
Regulatory liabilities 301,511 268,913
Asset retirement obligations 791 744
Operating lease liabilities 239 24
Other deferred credits 172,020 122,018
Total deferred credits and other liabilities 732,522 621,074
Total liabilities 2,744,742 2,448,239
Commitments and Contingencies (Note 11)
Common Stockholder’s Equity:    
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares) 64 64
Paid-in-capital 1,120,066 1,120,066
Retained earnings 744,002 619,349
Total common stockholder’s equity 1,864,132 1,739,479
Total liabilities and stockholders' equity 4,608,874 4,187,718
Texas-New Mexico Power Company | Nonrelated Party    
Current Assets:    
Accounts receivable 55,835 35,894
Current Liabilities:    
Payable 33,656 57,444
Texas-New Mexico Power Company | Related Party    
Current Assets:    
Other receivables 0 565
Current Liabilities:    
Payable $ 10,778 $ 8,100