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Construction Program and Jointly-Owned Electric Generating Plants - Summary of Budgeted Construction Expenditures (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($) MW
Summary of Budgeted Construction Expenditures [Line Items] |
2019 | $ 605.3
2020 | 625.9
2021 | 519.1
2022 | 487.5
2023 | 470.9
Total | $ 2,708.7
Solar |
Summary of Budgeted Construction Expenditures [Line Items] |
Public utilities, number of megawatts | MW | 50
Public Service Company of New Mexico |
Summary of Budgeted Construction Expenditures [Line Items] |
2019 | $ 333.4
2020 | 355.6
2021 | 253.5
2022 | 222.7
2023 | 231.8
Total | 1,397.0
Anticipated expansion of transmission system | 130.0
Public Service Company of New Mexico | Solar |
Summary of Budgeted Construction Expenditures [Line Items] |
2019 | 61.2
Texas-New Mexico Power Company |
Summary of Budgeted Construction Expenditures [Line Items] |
2019 | 245.4
2020 | 245.0
2021 | 245.3
2022 | 244.9
2023 | 218.9
Total | 1,199.5
Corporate and Other |
Summary of Budgeted Construction Expenditures [Line Items] |
2019 | 26.5
2020 | 25.3
2021 | 20.3
2022 | 19.9
2023 | 20.2
Total | $ 112.2

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