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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Summary of Significant Accounting Policies [Abstract] |
Estimated average service lives [Table Text Block] | Depreciation is provided on PGE’s other classes of plant in service over their estimated average service lives, which are as follows (in years):
Generation, excluding thermal: |
Hydro | 97
Wind | 30
Transmission | 61
Distribution | 51
General | 16

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