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Regulatory and Rate Matters - PNM Solar Direct, Application for a New 345-kV Transmission Line and Wester Spirit Line (Details) $ in Millions | Oct. 02, 2020 USD ($) | May 31, 2019 MW | May 01, 2019 USD ($) kv | Aug. 10, 2018 USD ($) kv
--- | --- | --- | --- | ---
PNM Solar Direct |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Solar distributed generation (in mw) | MW |  | 50 |  |
PPA term |  | 15 years |  |
KV Transmission Line |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Transmission line and associated facilities | kv |  |  |  | 345
Estimated cost of project | $ 109 |  |  | $ 85
Increase (decrease) in estimated cost of project | $ 24 |  |  |
Western Spirit Line |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Transmission line and associated facilities | kv |  |  | 345 |
Estimated cost of project |  |  | $ 285 |
Estimated self-fund amount under agreement |  |  | $ 75 |

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