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Property, Plant and Equipment, Net (Tables)
9 Months Ended
Sep. 30, 2023
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment
Property, plant and equipment, net consists of the following (in millions):
   As of
 Depreciable September 30, December 31,
Life20232022
Regulated assets:   
Utility generation, transmission and distribution systems
5-80 years
 $93,667  $92,759 
Interstate natural gas pipeline assets
3-80 years
 18,800  18,328 
   112,467 111,087 
Accumulated depreciation and amortization  (35,752) (34,599)
Regulated assets, net  76,715 76,488 
      
Nonregulated assets:     
Independent power plants
2-50 years
 8,461  8,545 
Cove Point LNG facility40 years3,415 3,412 
Other assets
2-30 years
 2,792  2,693 
   14,668 14,650 
Accumulated depreciation and amortization  (3,703) (3,452)
Nonregulated assets, net  10,965 11,198 
      
  87,680 87,686 
Construction work-in-progress  8,947  5,357 
Property, plant and equipment, net  $96,627 $93,043 
PAC  
Property, Plant and Equipment [Line Items]  
Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following (in millions):
  As of
 September 30,December 31,
Depreciable Life20232022
Utility plant: 
Generation
15 - 59 years
$13,814 $13,726 
Transmission
60 - 90 years
8,140 8,051 
Distribution
20 - 75 years
8,840 8,477 
Intangible plant(1) and other
5 - 75 years
2,810 2,755 
Utility plant in-service33,604 33,009 
Accumulated depreciation and amortization (11,649)(11,093)
Utility plant in-service, net 21,955 21,916 
Nonregulated, net of accumulated depreciation and amortization
14 - 95 years
18 18 
21,973 21,934 
Construction work-in-progress 4,126 2,496 
Property, plant and equipment, net $26,099 $24,430 
(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.
MEC  
Property, Plant and Equipment [Line Items]  
Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following (in millions):
As of
September 30,December 31,
Depreciable Life20232022
Utility plant:
Generation
20-62 years
$17,550 $18,582 
Transmission
55-80 years
2,758 2,662 
Electric distribution
15-80 years
5,163 4,931 
Natural gas distribution
30-75 years
2,239 2,144 
Utility plant in-service27,710 28,319 
Accumulated depreciation and amortization(7,674)(8,024)
Utility plant in-service, net20,036 20,295 
Nonregulated property, net of accumulated depreciation and amortization
20-50 years
20,042 20,301 
Construction work-in-progress1,479 790 
Property, plant and equipment, net$21,521 $21,091 
NPC  
Property, Plant and Equipment [Line Items]  
Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following (in millions):
As of
Depreciable LifeSeptember 30,December 31,
20232022
Utility plant:
Generation
30 - 55 years
$4,113 $3,977 
Transmission
45 - 70 years
1,585 1,562 
Distribution
20 - 65 years
4,365 4,134 
General and intangible plant
5 - 65 years
902 871 
Utility plant10,965 10,544 
Accumulated depreciation and amortization(3,797)(3,624)
Utility plant, net7,168 6,920 
Nonregulated, net of accumulated depreciation and amortization
45 years
7,169 6,921 
Construction work-in-progress1,100 485 
Property, plant and equipment, net$8,269 $7,406 
SPPC  
Property, Plant and Equipment [Line Items]  
Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following (in millions):
As of
Depreciable LifeSeptember 30,December 31,
20232022
Utility plant:
Electric generation
25 - 70 years
$1,298 $1,298 
Electric transmission
50 - 76 years
1,000 993 
Electric distribution
20 - 76 years
2,034 1,983 
Electric general and intangible plant
5 - 65 years
227 219 
Natural gas distribution
35 - 70 years
470 455 
Natural gas general and intangible plant
5 - 65 years
17 15 
Common general
5 - 65 years
386 380 
Utility plant5,432 5,343 
Accumulated depreciation and amortization(2,072)(1,992)
3,360 3,351 
Construction work-in-progress385 236 
Property, plant and equipment, net$3,745 $3,587 
EEGH  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment Property, plant and equipment, net consists of the following (in millions):
As of
September 30,December 31,
Depreciable Life20232022
Utility plant:
Interstate natural gas transmission and storage assets
21 - 51 years
$9,197 $8,922 
Intangible plant
5 - 17 years
117 113 
Utility plant in-service9,314 9,035 
Accumulated depreciation and amortization(3,162)(3,039)
Utility plant in-service, net6,152 5,996 
Nonutility plant:
LNG facility40 years4,525 4,522 
Intangible plant14 years25 25 
Nonutility plant4,550 4,547 
Accumulated depreciation and amortization(634)(542)
Nonutility plant, net3,916 4,005 
10,068 10,001 
Construction work-in-progress276 201 
Property, plant and equipment, net$10,344 $10,202 
EGTS  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment
Property, plant and equipment, net consists of the following (in millions):
As of
September 30,December 31,
Depreciable Life20232022
Interstate natural gas transmission and storage assets
28 - 50 years
$6,946 $6,724 
Intangible plant
12 - 19 years
81 79 
Plant in-service7,027 6,803 
Accumulated depreciation and amortization(2,533)(2,440)
4,494 4,363 
Construction work-in-progress205 141 
Property, plant and equipment, net$4,699 $4,504