Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2011

Public Utilities Property Plant And Equipment [Abstract]


		Depreciable		Progress Energy
(in millions)		Lives		2011		2010
Production plant		3-41	$	16,728	$	16,042
Transmission plant		7-75		3,853		3,530
Distribution plant		13-67		9,053		8,715
General plant and other		5-35		1,431		1,421
	Utility plant in service		$	31,065	$	29,708

Joint ownership of generating facilities

		Company						Construction
(in millions)		Ownership		Plant		Accumulated		Work in
Subsidiary	Facility	Interest		Investment		Depreciation		Progress
2011
PEC	Mayo	83.83	%	$	807	$	296	$	13
PEC	Harris	83.83	%		3,254		1,635		66
PEC	Brunswick	81.67	%		1,739		951		52
PEC	Roxboro Unit 4	87.06	%		733		470		12
PEF	Crystal River Unit 3	91.78	%		909		498		803
PEF	Intercession City Unit P11	66.67	%		23		12		-

2010
PEC	Mayo	83.83	%	$	798	$	294	$	8
PEC	Harris	83.83	%		3,255		1,604		16
PEC	Brunswick	81.67	%		1,702		939		38
PEC	Roxboro Unit 4	87.06	%		706		457		22
PEF	Crystal River Unit 3	91.78	%		901		497		648
PEF	Intercession City Unit P11	66.67	%		23		11		-

Non-ARO cost of removal


			Progress Energy
(in millions)			2011		2010
Removal costs		$	1,302	$	1,503
Nonirradiated decommissioning costs			223		233
Dismantlement costs			125		121
	Non-ARO cost of removal	$	1,650	$	1,857

Asset retirement obligations rollforward


(in millions)		Progress Energy
Asset retirement obligations at January 1, 2010	$	1,170
Additions		4
Accretion expense		65
Revisions to prior estimates		(39)
Asset retirement obligations at December 31, 2010		1,200
Accretion expense		67
Revisions to prior estimates		(2)
Asset retirement obligations at December 31, 2011	$	1,265

- 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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