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Regulatory and Rate Matters - Energy Efficiency and Load Management (Details) - Public Service Company of New Mexico $ in Millions | Apr. 15, 2022 USD ($) GWh | Apr. 15, 2020 USD ($) MMBTU meter
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Energy Efficiency and Load Management Program |  |
Public Utilities, General Disclosures [Line Items] |  |
Program costs related to energy efficiency, next fiscal year |  | $ 31.4
Program costs related to energy efficiency, in year two |  | 31.0
Program costs related to energy efficiency, in year three |  | $ 29.6
Number of AMI meters to be installed | meter |  | 5,000
Program costs related to meter installation |  | $ 2.9
2021 Energy Efficiency Annual Report | Disincentives and Incentives Added |  |
Public Utilities, General Disclosures [Line Items] |  |
Energy efficiency and load management programs targeted energy savings (in Gigawatts) | GWh | 94 |
Energy efficiency and load management programs profit incentive | $ 0.3 |
Minimum | Renewable Portfolio Standard |  |
Public Utilities, General Disclosures [Line Items] |  |
Profit incentive sliding scale multiplier |  | 0.071
Energy efficiency and load management programs targeted energy savings (in Gigawatts) | MMBTU |  | 80

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