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Regulatory Assets and Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2022
Regulated Operations [Abstract] |
Schedule of Regulatory Assets and Liabilities | Regulatory assets and liabilities reflected in the Consolidated Balance Sheets are presented below.
| PNM |  | TNMP
| December 31, |  | December 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
Assets: | (In thousands)
Current: |  |  |  |  |  |  |
FPPAC | $ | 8,904 |  |  | $ | 7,130 |  |  | $ | — |  |  | $ | — |
NMPRC hedging plan | 9,429 |  |  | 1,591 |  |  | — |  |  | — |
Transmission cost recovery factor | — |  |  | — |  |  | — |  |  | 3,906 |
Energy efficiency costs | — |  |  | — |  |  | 1,932 |  |  | 2,158 |
| 18,333 |  |  | 8,721 |  |  | 1,932 |  |  | 6,064 |
| PNM |  | TNMP
| December 31, |  | December 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
Assets (Continued): | (In thousands)
Non-Current: |  |  |  |  |  |  |
SJGS - ETA (1) | $ | 343,238 |  |  | $ | 51,975 |  |  | $ | — |  |  | $ | — |
SJGS - non-ETA (2) | 26,296 |  |  | 43 |  |  | — |  |  | — |
Shutdown of SJGS Units 2 and 3 | 94,677 |  |  | 100,954 |  |  | — |  |  | — |
SJGS replacement resources | 8,312 |  |  | 8,269 |  |  | — |  |  | — |
EIM | 13,102 |  |  | 7,028 |  |  | — |  |  | — |
Loss on reacquired debt | 15,323 |  |  | 17,249 |  |  | 26,317 |  |  | 27,615 |
Pension and OPEB(3) | 187,182 |  |  | 165,006 |  |  | 21,558 |  |  | 17,924 |
Deferred income taxes | 67,621 |  |  | 68,687 |  |  | 9,193 |  |  | 9,505 |
AMS surcharge | — |  |  | — |  |  | 6,254 |  |  | 12,507 |
AMS retirement and other costs | — |  |  | — |  |  | 12,591 |  |  | 12,286 |
Deferred COVID-19 costs | 5,664 |  |  | 6,896 |  |  | 1,053 |  |  | — |
Other | 2,526 |  |  | 2,874 |  |  | 5,779 |  |  | 5,440 |
| 763,941 |  |  | 428,981 |  |  | 82,745 |  |  | 85,277 |
Total regulatory assets | $ | 782,274 |  |  | $ | 437,702 |  |  | $ | 84,677 |  |  | $ | 91,341 |
| PNM |  | TNMP
| December 31, |  | December 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
Liabilities: |
Current: |  |  |  |  |  |  |
Renewable energy rider, including excess return | $ | (5,076) |  |  | $ | (5,989) |  |  | $ | — |  |  | $ | — |
Energy efficiency costs | (2,837) |  |  | (2,327) |  |  | — |  |  | — |
Transmission cost recovery factor | — |  |  | — |  |  | (9,089) |  |  | — |
| (7,913) |  |  | (8,316) |  |  | (9,089) |  |  | — |
Non-Current: |  |  |  |  |  |  |
Cost of removal | (238,903) |  |  | (294,193) |  |  | (97,030) |  |  | (73,029) |
Deferred income taxes | (301,493) |  |  | (321,976) |  |  | (94,994) |  |  | (107,250) |
PVNGS ARO | — |  |  | (1,215) |  |  | — |  |  | — |
Renewable energy tax benefits | (15,610) |  |  | (16,756) |  |  | — |  |  | — |
Accelerated depreciation SNCRs(3) | — |  |  | (16,331) |  |  | — |  |  | — |
Pension and OPEB | — |  |  | (2,376) |  |  | (4,518) |  |  | (6,099) |
COVID-19 cost savings | (900) |  |  | (900) |  |  | — |  |  | — |
Other | (83) |  |  | (83) |  |  | (1,671) |  |  | (1,185) |
| (556,989) |  |  | (653,830) |  |  | (198,213) |  |  | (187,563) |
Total regulatory liabilities | $ | (564,902) |  |  | $ | (662,146) |  |  | $ | (207,302) |  |  | $ | (187,563) |
(1) Amounts approved for recovery through the Energy Transition Charge, see Note 17 (2) Authorized to be recorded as regulatory assets for certain other abandonment costs that are not specifically addressed under the provisions of the ETA, see Note 17 (3) Reclassified to the SJGS - ETA regulatory asset after shutdown of SJGS in 2022

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