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Jointly-owned Plant
 12 Months Ended
Dec. 31, 2024
Jointly-owned Plant [Abstract]  
Jointly-owned Plant [Text Block] JOINTLY-OWNED PLANT
As of December 31, 2024, PGE had the following investments in jointly-owned plant (dollars in millions):
 PGE
Share		In-service DatePlant
In-service
Accumulated
Depreciation (1)
Construction
Work In
Progress
Colstrip - Generation
20.00 %1986$507 $449 $5 
Colstrip-Transmission
Various (2)
1986
69 40 — 
Pelton/Round Butte
50.01 %1958/1964221 76 20 
Total$797 $565 $25 
(1) Excludes AROs and accumulated asset retirement removal costs.
(2) 14% of the 2,260 MW transmission facilities between the Colstrip switchyard to the Broadview switchyard, near Billings, Montana, and 16% of the 1,930 MW transmission facilities between the Broadview switchyard and the interconnection point with Bonneville Power Administration’s transmission system near Townsend, Montana.
Under the respective joint operating agreements for the facilities, each participating owner is responsible for financing its share of capital and operating expenses. PGE’s proportionate share of direct operating and maintenance expenses of the facilities is included in the corresponding operating and maintenance expense categories in the consolidated statements of income.