Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Property, Plant and Equipment

Property, plant and equipment is comprised of the following:

	Original Cost		Accumulated Depreciation		Net Book Value
	(millions of dollars)
At December 31, 2015
Generation	$	23	$	19	$	4
Distribution		10,051		3,161		6,890
Transmission		3,554		962		2,592
Gas		546		163		383
Construction work in progress		604		—		604
Non-operating and other property		1,440		609		831
Total	$	16,218	$	4,914	$	11,304
At December 31, 2014
Generation	$	104	$	100	$	4
Distribution		9,527		3,021		6,506
Transmission		3,252		934		2,318
Gas		511		153		358
Construction work in progress		688		—		688
Non-operating and other property		1,383		751		632
Total	$	15,465	$	4,959	$	10,506

Capital Lease Assets Recorded within Property, Plant and Equipment

Capital lease assets recorded within Property, Plant and Equipment at December 31, 2015 and 2014 are comprised of the following:

	Original Cost		Accumulated Amortization		Net Book Value
	(millions of dollars)
At December 31, 2015
Transmission	$	76	$	51	$	25
Distribution		76		51		25
Total	$	152	$	102	$	50
At December 31, 2014
Transmission	$	76	$	46	$	30
Distribution		76		46		30
Total	$	152	$	92	$	60

Atlantic City Electric Co [Member]

Schedule of Property, Plant and Equipment

Property, plant and equipment is comprised of the following:

	Original Cost		Accumulated Depreciation		Net Book Value
	(millions of dollars)
At December 31, 2015
Distribution	$	2,012	$	472	$	1,540
Transmission		968		228		740
Construction work in progress		158		—		158
Non-operating and other property		167		64		103
Total	$	3,305	$	764	$	2,541
At December 31, 2014
Generation	$	10	$	9	$	1
Distribution		1,931		450		1,481
Transmission		839		223		616
Construction work in progress		115		—		115
Non-operating and other property		178		78		100
Total	$	3,073	$	760	$	2,313

Potomac Electric Power Co [Member]

Schedule of Property, Plant and Equipment

Property, plant and equipment is comprised of the following:

	Original Cost		Accumulated Depreciation		Net Book Value
	(millions of dollars)
At December 31, 2015
Distribution	$	5,996	$	2,199	$	3,797
Transmission		1,378		475		903
Construction work in progress		318		—		318
Non-operating and other property		399		125		274
Total	$	8,091	$	2,799	$	5,292
At December 31, 2014
Distribution	$	5,668	$	2,082	$	3,586
Transmission		1,306		463		843
Construction work in progress		312		—		312
Non-operating and other property		478		271		207
Total	$	7,764	$	2,816	$	4,948

Capital Lease Assets Recorded within Property, Plant and Equipment

Capital lease assets recorded within Property, plant and equipment at December 31, 2015 and 2014 are comprised of the following:

	Original Cost		Accumulated Amortization		Net Book Value
	(millions of dollars)
At December 31, 2015
Transmission	$	76	$	51	$	25
Distribution		76		51		25
Total	$	152	$	102	$	50
At December 31, 2014
Transmission	$	76	$	46	$	30
Distribution		76		46		30
Total	$	152	$	92	$	60

Delmarva Power & Light Co/De [Member]

Schedule of Property, Plant and Equipment

Property, plant and equipment is comprised of the following:

	Original Cost		Accumulated Depreciation		Net Book Value
	(millions of dollars)
At December 31, 2015
Distribution	$	2,043	$	490	$	1,553
Transmission		1,208		259		949
Gas		546		163		383
Construction work in progress		107		—		107
Non-operating and other property		305		134		171
Total	$	4,209	$	1,046	$	3,163
At December 31, 2014
Distribution	$	1,928	$	489	$	1,439
Transmission		1,107		248		859
Gas		511		153		358
Construction work in progress		125		—		125
Non-operating and other property		275		131		144
Total	$	3,946	$	1,021	$	2,925