Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2013

September 30, 2013		Exelon				ComEd				PECO				BGE

Regulatory assets		Current		Noncurrent		Current		Noncurrent		Current		Noncurrent		Current		Noncurrent
Pension and other postretirement
	benefits	$	308	$	3,542	$	0	$	0	$	0	$	0	$	0	$	0
Deferred income taxes			12		1,424		3		65		0		1,296		9		63
AMI programs			4		129		4		29		0		48		0		52
AMI meter events			0		5		0		0		0		5		0		0
Under-recovered distribution service
	costs		129		275		129		275		0		0		0		0
Debt costs			12		60		9		56		3		4		1		9
Fair value of BGE long-term debt (a)			0		225		0		0		0		0		0		0
Fair value of BGE supply contract (b)			29		3		0		0		0		0		0		0
Severance			23		13		19		0		0		0		4		13
Asset retirement obligations			0		93		0		68		0		25		0		0
MGP remediation costs			47		210		40		175		6		34		1		1
RTO start-up costs			2		1		2		1		0		0		0		0
Under-recovered uncollectible
	accounts		0		31		0		31		0		0		0		0
Renewable energy and associated
	RECs		16		106		16		106		0		0		0		0
Energy and transmission programs			79		0		79		0		0		0		0		0
Deferred storm costs			3		4		0		0		0		0		3		4
Electric generation-related
	regulatory asset		13		33		0		0		0		0		13		33
Rate stabilization deferral			68		175		0		0		0		0		68		175
Energy efficiency and demand
	response programs		75		144		0		0		0		0		75		144
Merger integration costs (c)			1		10		0		0		0		0		1		10
Under-recovered electric
	revenue decoupling (f)		8		0		0		0		0		0		8		0
Other			48		26		34		13		13		7		1		5

Total regulatory assets		$	877		6,509	$	335	$	819	$	22	$	1,419	$	184	$	509

September 30, 2013		Exelon				ComEd				PECO					BGE

Regulatory liabilities		Current		Noncurrent		Current		Noncurrent		Current			Noncurrent		Current			Noncurrent
Nuclear decommissioning		$	0	$	2,593	$	0	$	2,184	$	0		$	409	$	0		$	0
Removal costs			103		1,420		82		1,202		0			0		21			218
Energy efficiency and demand
	response programs		85		0		49		0		36			0		0			0
DLC Program Costs			1		10		0		0		1			10		0			0
Energy efficiency Phase 2			0		14		0		0		0			14		0			0
Electric distribution tax repairs			20		119		0		0		20			119		0			0
Gas distribution tax repairs			8		40		0		0		8			40		0			0
Energy and transmission programs			41		7		0		7		39	(d)		0		2	(h)		0
Over-recovered gas and electric
	universal service fund costs		7		0		0		0		7			0		0			0
Revenue subject to refund (e)			40		0		40		0		0			0		0			0
Over-recovered gas
	revenue decoupling (f)		8		0		0		0		0			0		8			0
Other			1		1		0		0		0			0		0			0

Total regulatory liabilities		$	314	$	4,204	$	171	$	3,393	$	111		$	592	$	31		$	218

December 31, 2012		Exelon				ComEd				PECO					BGE

Regulatory assets		Current		Noncurrent		Current		Noncurrent		Current			Noncurrent		Current			Noncurrent
Pension and other postretirement
	benefits	$	304	$	3,673	$	0	$	0	$	0		$	0	$	0		$	0
Deferred income taxes			14		1,382		5		62		0			1,255		9			65
AMI programs			3		70		3		10		0			29		0			31
AMI meter events			0		17		0		0		0			17		0			0
Under-recovered distribution service
	costs		18		191		18		191		0			0		0			0
Debt costs			14		68		11		62		3			6		1			9
Fair value of BGE long-term debt (a)			0		256		0		0		0			0		0			0
Fair value of BGE supply contract (b)			77		12		0		0		0			0		0			0
Severance			29		28		25		12		0			0		4			16
Asset retirement obligations			0		90		0		65		0			25		0			0
MGP remediation costs			58		232		51		197		6			33		1			2
RTO start-up costs			3		2		3		2		0			0		0			0
Under-recovered electric universal
	service fund costs		11		0		0		0		11			0		0			0
Financial swap with Generation			0		0		226		0		0			0		0			0
Renewable energy and associated
	RECs		18		49		18		49		0			0		0			0
Energy and transmission programs			43		0		14		0		1	(g)		0		28	(h)		0
DSP Program costs			1		3		0		0		1			3		0			0
DSP II Program costs			1		2		0		0		1			2		0			0
Deferred storm costs			3		6		0		0		0			0		3			6
Electric generation-related
	regulatory asset		16		40		0		0		0			0		16			40
Rate stabilization deferral			67		225		0		0		0			0		67			225
Energy efficiency and demand
	response programs		56		126		0		0		0			0		56			126
Under-recovered electric
	revenue decoupling (f)		5		0		0		0		0			0		5			0
Other			23		25		14		16		9			8		0			2

Total regulatory assets		$	764	$	6,497	$	388	$	666	$	32		$	1,378	$	190		$	522

December 31, 2012		Exelon				ComEd				PECO					BGE

Regulatory liabilities		Current		Noncurrent		Current		Noncurrent		Current			Noncurrent		Current		Noncurrent
Nuclear decommissioning		$	0	$	2,397	$	0	$	2,037	$	0		$	360	$	0	$	0
Removal costs			97		1,406		75		1,192		0			0		22		214
Energy efficiency and demand
	response programs		131		0		43		0		88			0		0		0
Electric distribution tax repairs			20		132		0		0		20			132		0		0
Gas distribution tax repairs			8		46		0		0		8			46
Over-recovered uncollectible
	accounts		6		0		6		0		0			0		0		0
Energy and transmission programs			54		0		6		0		48	(d)		0		0		0
Over-recovered gas universal
	service fund costs		3		0		0		0		3			0		0		0
Over-recovered AEPS costs			2		0		0		0		2			0		0		0
Revenue subject to refund (e)			40		0		40		0		0			0		0		0
Over-recovered gas revenue
	decoupling (f)		7		0		0		0		0			0		7		0

Total regulatory liabilities		$	368	$	3,981	$	170	$	3,229	$	169		$	538	$	29	$	214

Represents the regulatory asset recorded at Exelon Corporate for the difference in the fair value of the long-term debt of BGE as of the merger date. The asset is amortized over the life of the underlying debt. See Note 11 – Debt and Credit Agreements for additional information.
Represents the regulatory asset recorded at Exelon Corporate representing the fair value of BGE's supply contracts as of the close of the merger date. BGE is allowed full recovery of the costs of its electric and gas supply contracts through approved, regulated rates. The asset is amortized over a period of approximately 3 years.
ReIates to integration costs to achieve distribution synergies related to the merger transaction.
Includes $18 million related to the DSP program, $13 million related to the over-recovered natural gas costs under the PGC and $8 million related to over-recovered electric transmission costs as of September 30, 2013. As of December 31, 2012, includes $47 million related to the over-recovered electric supply costs under the GSA and $1 million related to the over-recovered natural gas costs under the PGC.
Primarily represents the regulatory liability for revenue subject to refund recorded pursuant to the ICC's order in the 2007 Rate Case. See above for discussion regarding the 2007 Rate Case.
Represents the electric and gas distribution costs recoverable from or refundable to customers under BGE's decoupling mechanism.
Relates to under-recovered transmission costs.
Relates to $2 million of over-recovered natural electric supply costs as of September 30, 2013. As of December 31, 2012, includes $9 million of under-recovered electric supply costs and $19 million of under-recovered natural gas supply costs.

As of September 30, 2013	Exelon		ComEd		PECO		BGE
Purchased receivables (a)	$	285	$	124	$	78	$	83
Allowance for uncollectible accounts (b)		(31)		(18)		(7)		(6)
Purchased receivables, net	$	254	$	106	$	71	$	77

As of December 31, 2012	Exelon		ComEd		PECO		BGE
Purchased receivables (a)	$	191	$	55	$	65	$	71
Allowance for uncollectible accounts (b)		(21)		(9)		(6)		(6)
Purchased receivables, net	$	170	$	46	$	59	$	65

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(a) PECO's gas POR program became effective on January 1, 2012 and includes a 1% discount on purchased receivables in order to recover the implementation costs of the program. If the costs are not fully recovered when PECO files its next gas distribution rate case, PECO will propose a mechanism to recover the remaining implementation costs as a distribution charge to low volume transportation customers or apply future discounts on purchased receivables from natural gas suppliers serving those customers.

(b) For ComEd and BGE, reflects the incremental allowance for uncollectible accounts recorded, which is in addition to the purchase discount. For ComEd, the incremental uncollectible accounts expense is recovered through its Purchase of Receivables with Consolidated Billing (PORCB) tariff.