Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Major classes of property, plant and equipment and their respective balances for the Companies are as follows:

At December 31,	2017		2016
(millions)
Dominion Energy
Utility:
Generation	$	17,602	$	17,147
Transmission		15,335		14,315
Distribution		17,408		16,381
Storage		2,887		2,814
Nuclear fuel		1,599		1,537
Gas gathering and processing		219		216
Oil and gas		1,720		1,652
General and other		1,514		1,450
Plant under construction		7,765		6,254
Total utility		66,049		61,766
Nonutility:
Merchant generation-nuclear		1,452		1,419
Merchant generation-other		4,992		4,149
Nuclear fuel		968		897
Gas gathering and processing		630		619
Other-including plant under construction		732		706
Total nonutility		8,774		7,790
Total property, plant and equipment	$	74,823	$	69,556
Virginia Power
Utility:
Generation	$	17,602	$	17,147
Transmission		8,332		7,871
Distribution		11,151		10,573
Nuclear fuel		1,599		1,537
General and other		794		745
Plant under construction		2,840		2,146
Total utility		42,318		40,019
Nonutility-other		11		11
Total property, plant and equipment	$	42,329	$	40,030
Dominion Energy Gas
Utility:
Transmission	$	4,732	$	4,231
Distribution		3,267		3,019
Storage		1,688		1,627
Gas gathering and processing		202		198
General and other		216		184
Plant under construction		293		448
Total utility		10,398		9,707
Nonutility:
Gas gathering and processing		630	$	619
Other-including plant under construction		145		149
Total nonutility		775		768
Total property, plant and equipment	$	11,173	$	10,475

Share of Jointly-Owned Power Stations

Dominion Energy’s and Virginia Power’s proportionate share of jointly-owned power stations at December 31, 2017 is as follows:

	Bath County Pumped Storage Station(1)			North Anna Units 1 and 2(1)			Clover Power Station(1)			Millstone Unit 3(2)
(millions, except percentages)
Ownership interest		60	%		88.4	%		50	%		93.5	%
Plant in service	$	1,059		$	2,504		$	589		$	1,217
Accumulated depreciation		(612	)		(1,263	)		(231	)		(381	)
Nuclear fuel		—			745			—			552
Accumulated amortization of nuclear fuel		—			(607	)		—			(427	)
Plant under construction		2			92			6			68

(1) Units jointly owned by Virginia Power.

(2) Unit jointly owned by Dominion Energy.