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Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Information [Line Items]

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:



	Operating Revenues				Operating Income				Net Income Attributable to Common Shareholders
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	9,477	$	9,691	$	1,218	$	1,099	$	907	$	583
June 30	7,689		8,074		841		940		484		537
September 30	8,929		9,401		1,353		1,144		772		731
December 31^(a)	8,343		8,812		962		706		773		152



	Net Income per Basic Share				Net Income per Diluted Share
	2019		2018		2019		2018
Quarter ended:
March 31	$	0.93	$	0.60	$	0.93	$	0.60
June 30	0.50		0.56		0.50		0.55
September 30	0.79		0.76		0.79		0.75
December 31	0.79		0.16		0.79		0.16

__________

(a)

Operating revenues, Operating income and Net income attributable to common shareholders for the quarter ended December 31, 2019 include a $6 million reduction related to a correction for Pepco’s decoupling mechanism for the 2019 interim periods. See Note 1 — Significant Accounting Policies for additional information.

Exelon Generation Co L L C [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income (Loss) Attributable to Membership Interest
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	5,296	$	5,512	$	333	$	347	$	363	$	136
June 30	4,210		4,579		147		282		108		178
September 30	4,774		5,278		482		311		257		234
December 31	4,644		5,069		362		35		397		(178		)

Commonwealth Edison Co [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	1,408	$	1,512	$	276	$	292	$	157	$	165
June 30	1,351		1,398		311		288		186		164
September 30	1,583		1,598		328		323		200		193
December 31	1,405		1,373		255		242		144		141

PECO Energy Co [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	900	$	866	$	222	$	142	$	168	$	113
June 30	655		653		145		127		102		96
September 30	778		757		183		154		140		126
December 31	766		765		162		165		118		124

Baltimore Gas and Electric Company [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	976	$	977	$	220	$	177	$	160	$	128
June 30	649		662		80		85		45		51
September 30	703		731		91		103		55		63
December 31	779		799		142		109		99		71

Pepco Holdings LLC [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

PHI

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



	Operating Revenues				Operating Income				Net Income
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	1,228	$	1,249	$	175	$	124	$	117	$	63
June 30	1,091		1,074		165		151		106		82
September 30	1,380		1,359		256		243		189		185
December 31^(a)	1,107		1,115		128		124		65		62

__________

(a)

Potomac Electric Power Company [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	575	$	555	$	84	$	54	$	55	$	29
June 30	531		521		93		83		64		52
September 30	642		626		127		110		98		87
December 31^(a)	513		529		57		63		26		36

_________

(a)

Delmarva Power & Light Company [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	380	$	384	$	72	$	49	$	53	$	31
June 30	287		289		44		42		30		26
September 30	319		328		51		51		33		33
December 31	319		331		50		48		31		30

Atlantic City Electric Company [Member]

Selected Quarterly Financial Information [Line Items]

Quarterly Financial Information

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



	Operating Revenues				Operating Income				Net Income (Loss)
	2019		2018		2019		2018		2019		2018
Quarter ended:
March 31	$	273	$	310	$	21	$	23	$	10	$	7
June 30	274		265		28		25		14		8
September 30	419		406		79		84		63		61
December 31	274		254		23		14		12		(1		)