Quarterly Data (Exelon, Generation, ComEd and PECO)

12 Months Ended

Dec. 31, 2012

Selected Quarterly Financial Information [Abstract]

Quarterly Financial Information Text Block

23. Quarterly Data (Unaudited) (Exelon, Generation, ComEd and PECO)

Exelon

The data shown below, which may not equal the total for the year due to the effects of rounding and dilution, includes all adjustments that Exelon considers necessary for a fair presentation of such amounts:

									Net Income
									on Common
	Operating Revenues				Operating Income				Stock
	2012		2011		2012		2011		2012		2011
Quarter ended:
March 31	$	4,686	$	4,956	$	359	$	1,202	$	200	$	668
June 30		5,954		4,496		714		1,034		286		620
September 30		6,565		5,254		603		1,181		296		601
December 31		6,284		4,357		704		1,062		378		606

	Average Basic Shares
	Outstanding				Net Income
	(in millions)				per Basic Share
	2012		2011		2012		2011
Quarter ended:
March 31		705		662	$	0.28	$	1.01
June 30		853		663		0.34		0.93
September 30		854		663		0.35		0.91
December 31		854		664		0.44		0.91
	Average Diluted Shares
	Outstanding				Net Income
	(in millions)				per Diluted Share
	2012		2011		2012		2011
Quarter ended:
March 31		707		664	$	0.28	$	1.01
June 30		856		664		0.33		0.93
September 30		857		665		0.35		0.90
December 31		857		666		0.44		0.91

The following table presents the New York Stock Exchange—Composite Common Stock Prices and dividends by quarter on a per share basis:

	2012								2011
	Fourth		Third		Second		First		Fourth			Third		Second		First
	Quarter		Quarter		Quarter		Quarter		Quarter			Quarter		Quarter		Quarter
High price	$	37.50	$	39.82	$	39.37	$	43.70	$	45.45		$	45.27	$	42.89	$	43.58
Low price		28.40		34.54		36.27		38.31		39.93			39.51		39.53		39.06
Close		29.74		35.58		37.62		39.21		43.37			42.61		42.84		41.24
Dividends		0.525		0.525		0.525		0.525		0.525	(a)		0.525		0.525		0.525

_____________________

(a)       The fourth quarter 2011 dividend does not include the first quarter 2012 regular quarterly dividend of $0.525 per share, declared by the Exelon Board of Directors on October 25, 2011. The first quarter 2012 dividend is payable on March 9, 2012, to shareholders of record of Exelon at the end of the day on February 15, 2012.

Generation

The data shown below includes all adjustments that Generation considers necessary for a fair presentation of such amounts:

									Net Income
									on Membership
	Operating Revenues				Operating Income				Interest
	2012		2011		2012		2011		2012		2011
Quarter ended:
March 31	$	2,739	$	2,643	$	272	$	801	$	168	$	495
June 30		3,753		2,455		384		647		166		443
September 30		4,017		2,821		174		754		91		386
December 31		3,928		2,528		290		673		137		447

ComEd

The data shown below includes all adjustments that ComEd considers necessary for a fair presentation of such amounts:

	Operating Revenues				Operating Income				Net Income
	2012		2011		2012		2011		2012		2011
Quarter ended:
March 31	$	1,388	$	1,466	$	226	$	200	$	87	$	69
June 30		1,281		1,444		142		254		42		114
September 30		1,484		1,784		218		243		90		112
December 31		1,290		1,362		300		285		160		121

PECO

The data shown below includes all adjustments that PECO considers necessary for a fair presentation of such amounts:

									Net Income
									on Common
	Operating Revenues				Operating Income				Stock
	2012		2011		2012		2011		2012		2011
Quarter ended:
March 31	$	875	$	1,153	$	177	$	210	$	96	$	125
June 30		715		842		151		161		79		82
September 30		806		946		178		153		122		104
December 31		790		778		117		131		79		73

BGE

The data shown below includes all adjustments that BGE considers necessary for a fair presentation of such amounts:

									Net (Loss) Income
					Operating				on Common
	Operating Revenues				(Loss) Income				Stock
	2012		2011		2012		2011		2012		2011
Quarter ended:
March 31	$	696	$	976	$	(11)	$	153	$	(33)	$	78
June 30		616		674		52		54		13		13
September 30		720		745		30		23		(4)		(2)
December 31		703		673		61		84		15		34