Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Potential Plant Retirements

		March 31, 2013
			Duke Energy		Duke Energy Carolinas(b)(e)		Progress Energy		Duke Energy Progress(c)(e)		Duke Energy Florida(d)		Duke Energy Ohio(f)		Duke Energy Indiana(g)
Capacity (in MW)			3,954		910		1,448		575		873		928		668
Remaining net book value (in millions)(a)		$	415	$	98	$	175	$	62	$	113	$	12	$	130
(a)	Included in Property, plant and equipment, net as of March 31, 2013, on the Condensed Consolidated Balance Sheets, unless otherwise noted.
(b)	Includes Riverbend Units 4 through 7, Lee Units 1 and 2 and Buck Units 5 and 6. Duke Energy Carolinas has committed to retire 1,667 MW in conjunction with a Cliffside air permit settlement, of which 587 MW have already been retired as of March 31, 2013. Duke Energy Carolinas retired 710 MW for Riverbend Units 4 through 7 and Buck Units 5 and 6 on April 1, 2013. Excludes 170 MW Lee Unit 3 that is expected to be converted to gas in 2014. The Lee Unit 3 conversion will be considered a retirement toward meeting the 1,667 MW retirement commitment.
(c)	Includes Sutton Station, which is expected to be retired by the end of 2013.
(d)	Includes Crystal River Units 1 and 2.
(e)	Net book value of Duke Energy Carolinas' Buck Units 5 and 6 of $68 million, and Duke Energy Progress' Sutton Station of $62 million is included in Generation facilities to be retired, net, on the Condensed Consolidated Balance Sheets at March 31, 2013.
(f)	Includes Beckjord Station Units 2 through 6 and Miami Fort Unit 6. Beckjord has no remaining book value. Beckjord Unit 1 was retired May 1, 2012.
(g)	Includes Wabash River Units 2 through 6.
Duke Energy continues to evaluate the potential need to retire these coal-fired generating facilities earlier than the current estimated useful lives, and plans to seek regulatory recovery for amounts that would not be otherwise recovered when any of these assets are retired. However, such recovery, including recovery of carrying costs on remaining book values, could be subject to future regulatory approvals and therefore cannot be assured.

Duke Energy Ohio [Member]

Schedule of MISO Exit Fee Obligations

(in millions)		Balance at December 31, 2012		Provision / Adjustments		Cash Reductions		Balance at March 31, 2013(a)
Duke Energy Ohio		$	97	$	1	$	(1)	$	97
(a)	As of March 31, 2013, $71 million is recorded as a Regulatory asset on Duke Energy Ohio's Condensed Consolidated Balance Sheets.