Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment, Net [Abstract]

As of December 31, 2012 and 2011, the components of property, plant and equipment, are stated at cost less accumulated depreciation as follows (in millions):



	2012		2011		Depreciable Lives
Buildings, machinery and equipment	$	14,774	$	15,074	3 – 47 Years
Geothermal properties	1,243		1,163		13 – 59 Years
Other	142		156		3 – 47 Years
	16,159		16,393
Less: Accumulated depreciation	4,390		4,158
	11,769		12,235
Land	98		91
Construction in progress	1,138		693
Property, plant and equipment, net	$	13,005	$	13,019

Total depreciation expense, including amortization of leased assets, recorded in income from operations and discontinued operations for the years ended December 31, 2012, 2011 and 2010, was $557 million, $560 million and $568 million, respectively.

We have various debt instruments that are collateralized by our property, plant and equipment. See Note 6 for a detailed discussion of such instruments.

Buildings, Machinery and Equipment

This component primarily includes power plants and related equipment. Included in buildings, machinery and equipment are assets under capital leases. See Note 6 for further information regarding these assets under capital leases.

Geothermal Properties

This component primarily includes our Geysers Assets.

Other

This component primarily includes software and emission reduction credits that are power plant specific and not available to be sold.

Capitalized Interest

The total amount of interest capitalized was $38 million, $24 million and $15 million for the years ended December 31, 2012, 2011 and 2010, respectively.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

+ References+ Details