Regulatory Matters (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Potential Plant Retirements

		June 30, 2012
		Duke Energy		Duke Energy Carolinas(b)(c)		Duke Energy Ohio(d)		Duke Energy Indiana(e)
Capacity (in MW)			2,773		1,080		1,025		668
Remaining net book value (in millions)(a)		$	327	$	176	$	13	$	138
(a)	Included in Property, plant and equipment, net as of June 30, 2012, on the Condensed Consolidated Balance Sheets, unless otherwise noted.
(b)	Includes Riverbend Units 4 through 7, Lee Units 1 through 3 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 June 30, 2012.
(c)	Net book value of Buck Units 5 and 6 of $73 million is included in Generation facilities to be retired, net, on the Condensed Consolidated Balance Sheets at June 30, 2012.
(d)	Includes Beckjord Station and Miami Fort Unit 6. Beckjord has no remaining book value.
(e)	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.

Schedule of MISO Exit Fee Obligations

	Balance at		Provision /		Cash		Balance at
(in millions)	December 31, 2011		Adjustments		Reductions		June 30, 2012
Duke Energy Ohio	$	110	$	2	$	(15)	$	97