Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant, and Equipment

SCE's property, plant and equipment included on the consolidated balance sheets is composed of the following:



	December 31,
(in millions)	2012			2011
Transmission	$	7,059		$	6,109
Distribution	16,872			15,938
Generation	4,455			4,063
General plant and other	4,358			3,951
Accumulated depreciation	(7,424		)	(6,894		)
	25,320			23,167
Construction work in progress	4,271			3,922
Nuclear fuel, at amortized cost	609			480
Total utility property, plant and equipment	$	30,200		$	27,569

Schedule of Jointly Owned Utility Projects

The following is SCE's investment in each project as of December 31, 2012:



(in millions)	Plant in Service		Construction Work in Progress		Accumulated Depreciation		Nuclear Fuel (at amortized cost)		Net Book Value		Ownership Interest
Transmission systems:
Eldorado	$	73	$	11	$	14	$	—	$	70	60%
Pacific Intertie	189		6		70		—		125		50%
Generating stations:
Four Corners Units 4 and 5 (coal)	589		17		545		—		61		48%
Mohave (coal)	327		32		292		—		67		56%
Palo Verde (nuclear)	1,819		67		1,480		142		548		16%
San Onofre (nuclear)	5,300		223		4,017		467		1,973		78%
Total	$	8,297	$	356	$	6,418	$	609	$	2,844

- Definition

Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.

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