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Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2020

Property, plant and equipment, net consists of the following as of December 31 (in millions):


	Depreciable
	Life	2020		2019
Regulated assets:
Utility generation, transmission and distribution systems	5-80 years	$	86,730	$	81,127
Interstate natural gas pipeline assets	3-80 years	16,667		8,165
		103,397		89,292
Accumulated depreciation and amortization		(30,662)		(26,353)
Regulated assets, net		72,735		62,939

Nonregulated assets:
Independent power plants	5-30 years	7,012		6,983
Other assets	3-40 years	5,659		1,834
		12,671		8,817
Accumulated depreciation and amortization		(2,586)		(2,183)
Nonregulated assets, net		10,085		6,634

Net operating assets		82,820		69,573
Construction work-in-progress		3,308		3,732
Property, plant and equipment, net		$	86,128	$	73,305

Property, plant and equipment, net consists of the following as of December 31 (in millions):


	Depreciable Life	2020		2019

Utility plant in service, net:
Generation	20-70 years	$	16,980	$	15,687
Transmission	52-75 years	2,365		2,124
Electric distribution	20-75 years	4,369		4,095
Natural gas distribution	29-75 years	1,955		1,820
Utility plant in service		25,669		23,726
Accumulated depreciation and amortization		(6,902)		(6,139)
Utility plant in service, net		18,767		17,587
Nonregulated property, net:
Nonregulated property gross	20-50 years	7		7
Accumulated depreciation and amortization		(1)		(1)
Nonregulated property, net		6		6
		18,773		17,593
Construction work-in-progress		506		782
Property, plant and equipment, net		$	19,279	$	18,375

The average depreciation and amortization rates applied to depreciable utility plant for the years ended December 31 were as follows:

Property, plant and equipment, net consists of the following as of December 31 (in millions):


	Depreciable Life	2020		2019
Utility Plant:
Generation	14 - 67 years	$	12,861	$	12,509
Transmission	58 - 75 years	7,632		6,482
Distribution	20 - 70 years	7,660		7,307
Intangible plant(1)	5 - 75 years	1,054		1,016
Other	5 - 60 years	1,510		1,449
Utility plant in service		30,717		28,763
Accumulated depreciation and amortization		(9,838)		(9,803)
Utility plant in service, net		20,879		18,960
Other non-regulated, net of accumulated depreciation and amortization	14 - 95 years	9		10
Plant, net		20,888		18,970
Construction work-in-progress		1,542		2,003
Property, plant and equipment, net		$	22,430	$	20,973

(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

Property, plant and equipment, net consists of the following as of December 31 (in millions):


	Depreciable Life	2020		2019
Utility plant:
Generation	30 - 55 years	$	3,690	$	3,541
Transmission	45 - 70 years	1,468		1,444
Distribution	20 - 65 years	3,771		3,567
General and intangible plant	5 - 65 years	791		741
Utility plant		9,720		9,293
Accumulated depreciation and amortization		(3,162)		(2,951)
Utility plant, net		6,558		6,342
Other non-regulated, net of accumulated depreciation and amortization	45 years	1		1
Plant, net		6,559		6,343
Construction work-in-progress		142		195
Property, plant and equipment, net		$	6,701	$	6,538

Property, plant and equipment, net consists of the following as of December 31 (in millions):


	Depreciable Life	2020		2019
Utility plant:
Electric generation	25 - 60 years	$	1,130	$	1,133
Electric transmission	50 - 100 years	908		840
Electric distribution	20 - 100 years	1,754		1,669
Electric general and intangible plant	5 - 70 years	189		178
Natural gas distribution	35 - 70 years	429		417
Natural gas general and intangible plant	5 - 70 years	15		14
Common general	5 - 70 years	355		338
Utility plant		4,780		4,589
Accumulated depreciation and amortization		(1,755)		(1,629)
Utility plant, net		3,025		2,960
Other non-regulated, net of accumulated depreciation and amortization	70 years	2		2
Plant, net		3,027		2,962
Construction work-in-progress		137		113
Property, plant and equipment, net		$	3,164	$	3,075

Property, plant and equipment, net consists of the following as of December 31 (in millions):


	Depreciable Life	2020		2019
Utility Plant:

Interstate natural gas pipeline assets	24 - 43 years	$	8,382	$	10,025
Intangible plant	5 - 10 years	115		143
Utility plant in service		8,497		10,168
Accumulated depreciation and amortization		(2,759)		(3,414)
Utility plant in service, net		5,738		6,754

Nonutility Plant:

LNG facility	40 years	4,454		4,425
Intangible plant	14 years	25		25
Nonutility plant in service		4,479		4,450
Accumulated depreciation and amortization		(283)		(196)
Nonutility plant in service, net		4,196		4,254

Plant, net		9,934		11,008
Construction work- in-progress		210		719
Property, plant and equipment, net		$	10,144	$	11,727