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Jointly-owned Plant | 12 Months Ended
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Dec. 31, 2021
Jointly-owned Plant [Abstract] |
Jointly-owned Plant [Text Block] | JOINTLY-OWNED PLANT As of December 31, 2021, PGE had the following investments in jointly-owned plant (dollars in millions):
| PGE Share |  | In-service Date |  | Plant In-service |  | Accumulated Depreciation (1) |  | Construction Work In Progress
Colstrip | 20.00 | % |  | 1986 |  | $ | 576 |  |  | $ | 399 |  |  | $ | 7 |
Pelton/Round Butte (2) | 66.67 | % |  | 1958 | / | 1964 |  | 274 |  |  | 87 |  |  | 10 |
Total |  |  |  |  |  |  | $ | 850 |  |  | $ | 486 |  |  | $ | 17 |
(1) Excludes AROs and accumulated asset retirement removal costs. (2) For more information regarding changes to PGE’s ownership share in the Pelton/Round Butte Project in 2022, see Note 20, Subsequent Events. Under the respective joint operating agreements for the generating 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. The Company operated, and continues to have a 90% ownership interest in Boardman, which ceased coal-fired operations during the fourth quarter of 2020. The Company has begun decommissioning the facility. As of December 31, 2021, PGE’s ARO liability for its 90% share of the decommissioning costs was $23 million.

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- Definition Jointly-owned Plant [Abstract] + References No definition available. + Details
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- Definition Jointly-owned Plant [Text Block] + References No definition available. + Details
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