XML 304 R14.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Property, Plant and Equipment (All Registrants)
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment (All Registrants) Property, Plant and Equipment (All Registrants)
The following tables present a summary of property, plant and equipment by asset category as of December 31, 2019 and 2018:
Asset Category
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
PHI
 
Pepco
 
DPL
 
ACE
December 31, 2019
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Electric—transmission and distribution
$
56,809

 
$
—

 
$
27,566

 
$
8,957

 
$
8,326

 
$
13,809

 
$
9,734

 
$
4,464

 
$
4,207

Electric—generation
29,839

 
29,839

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Gas—transportation and distribution
6,147

 
—

 
—

 
2,899

 
2,999

 
525

 
—

 
690

 
—

Common—electric and gas
1,907

 
—

 
—

 
877

 
991

 
146

 
—

 
160

 
—

Nuclear fuel(a)
5,656

 
5,656

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Construction work in progress
3,055

 
702

 
662

 
250

 
483

 
921

 
628

 
125

 
166

Other property, plant and equipment(b)
799

 
13

 
47

 
27

 
25

 
108

 
64

 
21

 
27

Total property, plant and equipment
104,212

 
36,210

 
28,275

 
13,010

 
12,824

 
15,509

 
10,426

 
5,460

 
4,400

Less: accumulated depreciation(c)
23,979

 
12,017

 
5,168

 
3,718

 
3,834

 
1,213

 
3,517

 
1,425

 
1,210

Property, plant and equipment, net
$
80,233

 
$
24,193

 
$
23,107

 
$
9,292

 
$
8,990

 
$
14,296

 
$
6,909

 
$
4,035

 
$
3,190

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2018
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Electric—transmission and distribution
$
53,090

 
$
—

 
$
25,991

 
$
8,359

 
$
7,951

 
$
12,664

 
$
9,217

 
$
4,195

 
$
3,866

Electric—generation
29,170

 
29,170

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Gas—transportation and distribution
5,530

 
—

 
—

 
2,694

 
2,630

 
486

 
—

 
651

 
—

Common—electric and gas
1,627

 
—

 
—

 
756

 
860

 
126

 
—

 
136

 
—

Nuclear fuel(a)
5,957

 
5,957

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Construction work in progress
3,377

 
997

 
705

 
343

 
410

 
912

 
536

 
151

 
209

Other property, plant and equipment(b)
858

 
63

 
46

 
19

 
25

 
99

 
61

 
17

 
28

Total property, plant and equipment
99,609

 
36,187

 
26,742

 
12,171

 
11,876

 
14,287

 
9,814

 
5,150

 
4,103

Less: accumulated depreciation(c)
22,902

 
12,206

 
4,684

 
3,561

 
3,633

 
841

 
3,354

 
1,329

 
1,137

Property, plant and equipment, net
$
76,707

 
$
23,981

 
$
22,058

 
$
8,610

 
$
8,243

 
$
13,446

 
$
6,460

 
$
3,821

 
$
2,966

__________
(a)
Includes nuclear fuel that is in the fabrication and installation phase of $1,025 million and $1,004 million at December 31, 2019 and 2018, respectively.
(b)
Primarily composed of land and non-utility property.
(c)
Includes accumulated amortization of nuclear fuel in the reactor core at Generation of $2,867 million and $2,969 million as of December 31, 2019 and 2018, respectively.
The following table presents the average service life for each asset category in number of years:
 
Average Service Life (years)
Asset Category
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
PHI
 
Pepco
 
DPL
 
ACE
Electric - transmission and distribution
5-80
 
N/A
 
5-80
 
5-65
 
5-75
 
5-75
 
5-75
 
5-70
 
5-65
Electric - generation
1-56
 
1-56
 
N/A
 
N/A
 
N/A
 
N/A
 
N/A
 
N/A
 
N/A
Gas - transportation and distribution
5-80
 
N/A
 
N/A
 
5-70
 
5-80
 
5-75
 
N/A
 
5-75
 
N/A
Common - electric and gas
4-75
 
N/A
 
N/A
 
5-50
 
4-50
 
5-75
 
N/A
 
5-75
 
N/A
Nuclear fuel
1-8
 
1-8
 
N/A
 
N/A
 
N/A
 
N/A
 
N/A
 
N/A
 
N/A
Other property, plant and equipment
1-50
 
1-10
 
34-50
 
50
 
20-50
 
3-50
 
33-50
 
8-50
 
13-15

Depreciation provisions are based on the estimated useful lives of the stations, which reflect the first renewal of the operating licenses for all of Generation's operating nuclear generating stations except for Clinton and Peach Bottom. Clinton depreciation provisions are based on an estimated useful life through 2027, which is the last year of the Illinois ZES. Peach Bottom depreciation provisions are based on estimated useful life of 2053 and 2054 for Unit 2 and Unit 3, respectively, which reflects the anticipated second renewal of its operating licenses. Beginning in 2017, TMI and Oyster Creek depreciation provisions were based on their 2019 expected shutdown dates. Beginning February 2018, Oyster Creek depreciation provisions were based on its announced shutdown date of September 2018. See Note 3 — Regulatory Matters for additional information regarding license renewals and the Illinois ZECs and Note 6 — Early Plant Retirements for additional information on the impacts of early plant retirements.
The following table presents the annual depreciation rates for each asset category. Nuclear fuel amortization is charged to fuel expense using the unit-of-production method and not included in the below table.
 
Annual Depreciation Rates
 
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
PHI
 
Pepco
 
DPL
 
ACE
December 31, 2019
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Electric—transmission and distribution
2.80
%
 
N/A

 
2.99
%
 
2.36
%
 
2.60
%
 
2.77
%
 
2.47
%
 
2.86
%
 
2.94
%
Electric—generation
4.35
%
 
4.35
%
 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

Gas—transportation and distribution
2.04
%
 
N/A

 
N/A

 
1.89
%
 
2.30
%
 
1.55
%
 
N/A

 
1.55
%
 
N/A

Common—electric and gas
7.37
%
 
N/A

 
N/A

 
6.06
%
 
8.30
%
 
8.25
%
 
N/A

 
6.24
%
 
N/A

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2018
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Electric—transmission and distribution
2.73
%
 
N/A

 
2.95
%
 
2.35
%
 
2.61
%
 
2.61
%
 
2.40
%
 
2.77
%
 
2.45
%
Electric—generation
5.37
%
 
5.37
%
 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

Gas—transportation and distribution
2.07
%
 
N/A

 
N/A

 
1.90
%
 
2.36
%
 
1.59
%
 
N/A

 
1.59
%
 
N/A

Common—electric and gas
6.98
%
 
N/A

 
N/A

 
5.44
%
 
8.50
%
 
6.30
%
 
N/A

 
3.70
%
 
N/A

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Electric—transmission and distribution
2.75
%
 
N/A

 
2.99
%
 
2.37
%
 
2.58
%
 
2.63
%
 
2.35
%
 
2.75
%
 
2.46
%
Electric—generation
4.36
%
 
4.36
%
 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

 
N/A

Gas—transportation and distribution
2.10
%
 
N/A

 
N/A

 
1.89
%
 
2.33
%
 
2.07
%
 
N/A

 
2.07
%
 
N/A

Common—electric and gas
7.05
%
 
N/A

 
N/A

 
5.47
%
 
8.64
%
 
6.50
%
 
N/A

 
4.14
%
 
N/A


Capitalized Interest and AFUDC (All Registrants)
The following table summarizes capitalized interest and credits to AFUDC by year:
 
Exelon
 
Generation
 
ComEd
 
PECO
 
BGE
 
PHI
 
Pepco
 
DPL
 
ACE
December 31, 2019
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Capitalized interest
$
24

 
$
24

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

AFUDC debt and equity
132

 
—

 
32

 
17

 
29

 
54

 
39

 
6

 
9

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2018
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Capitalized interest
$
31

 
$
31

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

AFUDC debt and equity
109

 
—

 
30

 
12

 
24

 
44

 
34

 
4

 
4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Capitalized interest
$
63

 
$
63

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

AFUDC debt and equity
108

 
—

 
20

 
12

 
22

 
54

 
34

 
10

 
9


See Note 1 — Significant Accounting Policies for additional information regarding property, plant and equipment policies. See Note 16 — Debt and Credit Agreements for additional information regarding Exelon’s, ComEd’s and PECO’s property, plant and equipment subject to mortgage liens.