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Property Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

	Estimated	December 31,
	Useful Life	2012		2011

	(in years)	(in millions)
Electric generation and distribution facilities	5 - 68	$	27,586	$	26,821
Other buildings	3 - 50		2,840		2,924
Furniture, fixtures and equipment	3 - 31		472		476
Other	1 - 46		939		847
Total electric generation and distribution assets and other			31,837		31,068
Accumulated depreciation			(9,723)		(8,944)
Net electric generation and distribution assets and other⁽¹⁾⁽²⁾		$	22,114	$	22,124

Interest Capitalized During Development And Construction


		2012		2011		2010

		(in millions)
Depreciation expense (including amortization of assets
	recorded under capital leases)	$	1,251	$	1,154	$	1,010
Amortization of internal use software			48		46		50
Interest capitalized during development and construction			111		176		188

Net Asset Value Of Regulated And Non-Regulated Assets And Accumulated Depreciation

	December 31,
	2012		2011

	(in millions)
Regulated assets	$	14,650	$	14,398
Regulated accumulated depreciation		(5,221)		(5,029)
Regulated generation, distribution assets and other, net		9,429		9,369
Non-regulated assets		17,187		16,670
Non-regulated accumulated depreciation		(4,502)		(3,915)
Non-regulated generation, distribution assets and other, net		12,685		12,755
Net electric generation and distribution assets and other	$	22,114	$	22,124

Schedule Of Change In Asset Retirement Obligation Table Text Block

	2012		2011

	(in millions)
Balance at January 1	$	117	$	88
Additional liabilities incurred		3		1
Assumed in business combination		-		24
Liabilities settled		(3)		-
Accretion expense		7		6
Change in estimated cash flows		3		(1)
Translation adjustments		1		(1)
Balance at December 31	$	128	$	117

Schedule Of Jointly Owned Utility Plants Text Block

		DP&L Share		DP&L Investment

			Production	Gross				Construction
			Capacity	Plant		Accumulated		Work In
		Ownership	(MW)	In Service		Depreciation		Process

				($ in millions)

Production units:
	Beckjord Unit 6	50%	207	$	-	$	-	$	-
	Conesville Unit 4	17%	129		41		3		11
	East Bend Station	31%	186		8		2		3
	Killen Station	67%	402		299		-		5
	Miami Fort Units 7 and 8	36%	368		213		7		3
	Stuart Station	35%	808		200		6		12
	Zimmer Station	28%	365		169		12		2
Transmission		various	-		39		3		-
	Total		2,465	$	969	$	33	$	36

- Definition

Tabular disclosure of the useful life and salvage value of 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.

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- 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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