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Electric Operating Revenues - Disaggregation of revenues (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | $ 473,220 | $ 462,101 | $ 904,310 | $ 993,133
Alternative revenue programs | 14,714 | 12,467 | 20,007 | 17,226
Other electric operating revenues | 168 | 2,588 | 662 | 10,874
Total Electric Operating Revenues | 488,102 | 477,156 | 924,979 | 1,021,233
PNM |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 332,673 | 332,077 | 638,388 | 746,631
Alternative revenue programs | 830 | 3,577 | 2,736 | 10,902
Other electric operating revenues | 168 | 2,588 | 662 | 10,874
Total Electric Operating Revenues | 333,671 | 338,242 | 641,786 | 768,407
TNMP |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 140,547 | 130,024 | 265,922 | 246,502
Alternative revenue programs | 13,884 | 8,890 | 17,271 | 6,324
Other electric operating revenues | 0 | 0 | 0 | 0
Total Electric Operating Revenues | 154,431 | 138,914 | 283,193 | 252,826
Energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Electric Operating Revenues | 488,102 | 477,156 | 924,979 | 1,021,233
Energy | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 168,378 | 149,507 | 330,258 | 305,758
Energy | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 150,428 | 143,227 | 285,309 | 276,018
Energy | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 42,118 | 39,086 | 76,743 | 71,327
Energy | Public authority |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 6,956 | 6,974 | 13,070 | 13,011
Energy | Economy energy service |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 4,033 | 10,731 | 11,595 | 20,041
Energy | PNM | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 121,065 | 108,016 | 241,450 | 227,901
Energy | PNM | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 109,929 | 105,262 | 209,266 | 203,323
Energy | PNM | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 34,201 | 26,156 | 58,970 | 45,633
Energy | PNM | Public authority |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 5,216 | 5,305 | 9,614 | 9,723
Energy | PNM | Economy energy service |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 4,033 | 10,731 | 11,595 | 20,041
Energy | TNMP | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 47,313 | 41,491 | 88,808 | 77,857
Energy | TNMP | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 40,499 | 37,965 | 76,043 | 72,695
Energy | TNMP | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 7,917 | 12,930 | 17,773 | 25,694
Energy | TNMP | Public authority |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 1,740 | 1,669 | 3,456 | 3,288
Energy | TNMP | Economy energy service |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 0 | 0 | 0 | 0
Transmission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 75,449 | 72,984 | 147,407 | 152,050
Transmission | PNM |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 33,333 | 37,922 | 69,482 | 86,930
Transmission | TNMP |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 42,116 | 35,062 | 77,925 | 65,120
Wholesale energy sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 23,507 | 37,308 | 35,197 | 150,294
Wholesale energy sales | PNM |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 23,507 | 37,308 | 35,197 | 150,294
Wholesale energy sales | TNMP |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 0 | 0 | 0 | 0
Miscellaneous |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 2,351 | 2,284 | 4,731 | 4,634
Miscellaneous | PNM |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | 1,389 | 1,377 | 2,814 | 2,786
Miscellaneous | TNMP |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues from contracts with customers | $ 962 | $ 907 | $ 1,917 | $ 1,848

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