Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

(3) Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31 (in millions):



	Depreciable Life	2014			2013
Property, plant and equipment:
Generation	10 - 67 years	$	11,932		$	11,058
Transmission	58 - 75 years	5,392			5,235
Distribution	20 - 70 years	6,197			6,030
Intangible plant⁽¹⁾	5 - 65 years	879			857
Other	5 - 60 years	1,413			1,688
Property, plant and equipment in-service		25,813			24,868
Accumulated depreciation and amortization		(8,026		)	(7,686		)
Net property, plant and equipment in-service		17,787			17,182
Construction work-in-progress		932			1,325
Total property, plant and equipment, net		$	18,719		$	18,507


(1)	Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

The average depreciation and amortization rate applied to depreciable property, plant and equipment was 3.0% for the year ended December 31, 2014 and 2.8% for each of the years ended December 31, 2013 and 2012.

Depreciation Study

As a result of PacifiCorp's depreciation study approved by its state regulatory commissions, PacifiCorp revised its depreciation rates effective January 1, 2014. The approved depreciation rates resulted in an increase in depreciation expense of $35 million for the year ended December 31, 2014 as compared to the year ended December 31, 2013.

Unallocated Acquisition Adjustments

PacifiCorp has unallocated acquisition adjustments that represent the excess of costs of the acquired interests in property, plant and equipment purchased from the entity that first devoted the assets to utility service over their net book value in those assets. These unallocated acquisition adjustments included in other property, plant and equipment had an original cost of $143 million and $159 million as of December 31, 2014 and 2013, respectively, and accumulated depreciation of $107 million and $118 million as of December 31, 2014 and 2013, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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