Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Regulatory Assets And Regulatory Liabilities

	2012		2011
	(millions of dollars)
Regulatory Assets
Pension and OPEB costs (a)	$	1,171	$	1,037
Securitized stranded costs (a)		416		481
Smart Grid (a)		229		142
Deferred energy supply costs (a)		183		126
Recoverable income taxes		177		145
Incremental storm restoration costs		89		28
MAPP abandonment costs (a)		88		—
Deferred debt extinguishment costs (a)		53		57
Recoverable workers compensation and long-term disability costs		31		34
Deferred losses on gas derivatives		4		17
Other		173		129
Total Regulatory Assets	$	2,614	$	2,196
Regulatory Liabilities
Asset removal costs	$	324	$	388
Deferred energy supply costs		78		33
Deferred income taxes due to customers		45		48
Excess depreciation reserve		11		26
Other		43		31
Total Regulatory Liabilities	$	501	$	526

Potomac Electric Power Co [Member]

Schedule Of Regulatory Assets And Regulatory Liabilities

The components of Pepco’s regulatory asset and liability balances at December 31, 2012 and 2011 are as follows:

	2012		2011
	(millions of dollars)
Regulatory Assets
Smart Grid (a)	$	159	$	96
Recoverable income taxes		75		57
MAPP abandonment costs (a)		50		—
Demand-side management		45		20
Incremental storm restoration costs		44		14
Recoverable workers’ compensation and long-term disability costs		31		34
Deferred debt extinguishment costs (a)		28		30
Deferred energy supply costs		4		4
Other		51		44
Total Regulatory Assets	$	487	$	299
Regulatory Liabilities
Asset removal costs	$	122	$	144
Other		19		25
Total Regulatory Liabilities	$	141	$	169

(a) A return is generally earned on these deferrals.

Atlantic City Electric Co [Member]

Schedule Of Regulatory Assets And Regulatory Liabilities

The components of ACE’s regulatory asset and liability balances at December 31, 2012 and 2011 are as follows:

	2012		2011
	(millions of dollars)
Regulatory Assets
Securitized stranded costs (a)	$	416	$	481
Deferred energy supply costs (a)		166		105
Incremental storm restoration costs		34		8
Recoverable income taxes		33		27
ACE SOCAs		11		—
Other		34		41
Total Regulatory Assets	$	694	$	662
Regulatory Liabilities
Deferred energy supply costs	$	62	$	11
Federal and state tax benefits, related to securitized stranded costs		16		19
Excess depreciation reserve		11		26
ACE SOCAs		8		—
Other		5		4
Total Regulatory Liabilities	$	102	$	60

(a) A return is generally earned on these deferrals.

Delmarva Power & Light Co/De [Member]

Schedule Of Regulatory Assets And Regulatory Liabilities

The components of DPL’s regulatory asset and liability balances at December 31, 2012 and 2011 are as follows:

	2012		2011
	(millions of dollars)
Regulatory Assets
Recoverable income taxes	$	69	$	61
Smart Grid (a)		70		46
MAPP abandonment costs (a)		38		—
COPCO acquisition adjustment (a)		26		30
Deferred debt extinguishment costs (a)		15		16
Deferred energy supply costs (b)		13		16
Incremental storm restoration costs		11		6
Deferred losses on gas derivatives		4		17
Other		42		35
Total Regulatory Assets	$	288	$	227
Regulatory Liabilities
Asset removal costs	$	202	$	244
Deferred income taxes due to customers		38		38
Deferred energy supply costs		6		12
Other		12		3
Total Regulatory Liabilities	$	258	$	297

(a) A return is earned on these deferrals.

(b) A return is generally earned in Delaware on this deferral.