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v3.20.4

Equity Method Investment - Narrative (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) MW | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) Facility MW
Business Acquisition [Line Items] |  |  |  |
Plant in service, held for future use, and to be abandoned | $ | $ 8,480,799 | $ 7,918,601 |  |
PNMR Development |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Solar distributed generation (in mw) |  | 130 |  |
NMRD |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Solar distributed generation (in mw) |  |  |  | 30
Plant in service, held for future use, and to be abandoned | $ |  |  |  | $ 12,400
Renewable energy capacity in operating (in mw) |  |  |  | 135.1
Megawatts supplying energy to data center (in mw) |  |  |  | 130
Megawatts supplying energy to cooperative (in mw) |  |  |  | 1.9
Megawatts supplying energy to power city (in mw) |  |  |  | 1.2
NMRD | PNMR Development |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ownership percentage | 50.00% |  |  |
Number of solar facilities | Facility |  |  |  | 3
Solar distributed generation (in mw) |  |  |  | 10
Plant in service, held for future use, and to be abandoned | $ |  |  |  | $ 24,800
Cash contribution percentage |  |  |  | 50.00%
Contribution to construction activities | $ | $ 23,300 | $ 38,300 | $ 9,000 |
NMRD | Central New Mexico Electric Cooperative |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Megawatts supplying energy to cooperative (in mw) |  |  |  | 2.0

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