Jointly-owned Plant

12 Months Ended

Dec. 31, 2012

Jointly-owned Plant Note [Abstract]

Jointly-owned Plant [Text Block]

JOINTLY-OWNED PLANT

PGE has interests in three jointly-owned generating facilities. Under the joint operating agreements, each participating owner is responsible for financing its share of construction, operating and leasing costs. 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.

As of December 31, 2012, PGE had the following investments in jointly-owned plant (dollars in millions):

	PGE Share		In-service Date			Plant In-service		Accumulated Depreciation*		Construction Work In Progress
Boardman	65.00	%	1980			$	479	$	308	$	8
Colstrip	20.00		1986			507		328		3
Pelton/Round Butte	66.67		1958	/	1964	215		48		5
Total						$	1,201	$	684	$	16

* Excludes asset retirement obligations and accumulated asset retirement removal costs.