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v3.25.1

Regulatory and Rate Matters - PNM (Details) $ in Thousands |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jan. 01, 2025 USD ($) | Nov. 26, 2024 USD ($) | Jun. 14, 2024 USD ($) | Jan. 03, 2024 USD ($) | Mar. 31, 2025 USD ($) MW | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) program
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Increase in non-fuel based rate |  |  |  | $ 15,300 |  |  |
Electric Operating Revenues |  |  |  |  | $ (482,792) | $ (436,877) |
Regulatory liabilities return period |  |  |  |  |  |  | 2 years
Excess return on jurisdictional equity that would require refund |  |  |  |  | 0.50% |  |
Public Service Company of New Mexico |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Electric Operating Revenues |  |  |  |  | $ (333,380) | (308,115) |
Public Service Company of New Mexico | NMPRC |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Proposed revision to rider that will allow for recovery | $ 58,700 |  |  |  |  |  |
2025 Rate Request |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Requested return on equity |  | 9.45% | 10.45% |  |  |  |
Requested equity capital structure |  | 51.00% | 52.50% |  |  |  |
2025 Rate Request | Public Service Company of New Mexico |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Recovery of base rate |  |  | $ 3,000,000 |  |  |  |
Requested rate increase (decrease) |  | $ 105,000 | 174,300 |  |  |  |
Increase in base rate |  | $ 82,100 | 92,200 |  |  |  |
Increase in revenues from FPPAC |  |  | $ 82,100 |  |  |  |
2024 Rate Change |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Requested return on equity |  |  |  | 9.26% |  |  |
Requested equity capital structure |  |  |  | 49.61% |  |  |
Requested debt capital structure |  |  |  | 50.10% |  |  |
Requested equity capital structure, percentage |  |  |  | 0.29% |  |  |
Regulatory liability |  |  |  |  |  |  | $ 19,200
Deferred regulatory liability |  |  |  |  |  |  | 19,200
2024 Rate Change | PVNGS Leased Interest |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Electric Operating Revenues |  |  |  |  |  |  | 38,400
2024 Rate Change | Four Corners |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Regulatory disallowances |  |  |  |  |  |  | 55,500
2024 Rate Change | Palo Verde Nuclear Generating Station |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Regulatory disallowances |  |  |  |  |  |  | $ 8,200
Renewable Portfolio Standard | Public Service Company of New Mexico |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Number of megawatts of Solar PV facilities | MW |  |  |  |  | 158 |  |
Current output in the geothermal facility (in megawatts) | MW |  |  |  |  | 11 |  |
Solar generation capacity (in megawatts) | MW |  |  |  |  | 314.9 |  |
Renewable Portfolio Standard | Public Service Company of New Mexico | New Mexico Wind |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Number of megawatts for wind energy | MW |  |  |  |  | 200 |  |
Renewable Portfolio Standard | Public Service Company of New Mexico | Red Mesa Wind |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Number of megawatts for wind energy | MW |  |  |  |  | 102 |  |
Renewable Portfolio Standard | Public Service Company of New Mexico | La Joya Wind |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Number of megawatts for wind energy | MW |  |  |  |  | 140 |  |
Renewable Energy Rider | Public Service Company of New Mexico | NMPRC |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Recorded revenues from renewable rider |  |  |  |  | $ 17,000 | $ 15,300 |
2024 Plan | Public Service Company of New Mexico |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Program costs related to energy efficiency, number of programs | program |  |  |  |  |  |  | 10
Program costs related to energy efficiency, in year one |  |  |  |  |  |  | $ 34,500
Program costs related to energy efficiency, in year two |  |  |  |  |  |  | 35,400
Program costs related to energy efficiency, in year three |  |  |  |  |  |  | $ 36,500
Energy Efficiency and Load Management Program | Public Service Company of New Mexico | Minimum |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Profit incentive sliding scale multiplier |  |  |  |  |  |  | 0.071
Energy Efficiency and Load Management Program | Public Service Company of New Mexico | Maximum |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Profit incentive sliding scale multiplier |  |  |  |  |  |  | 0.0882

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