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Exelon Corp., et al. – ‘10-Q’ for 9/30/23 – ‘EX-101.SCH’

On:  Thursday, 11/2/23, at 2:36pm ET   ·   For:  9/30/23   ·   Accession #:  1109357-23-97   ·   File #s:  0-16844, 1-01072, 1-01405, 1-01839, 1-01910, 1-03559, 1-16169, 1-31403

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  As Of               Filer                 Filing    For·On·As Docs:Size

11/02/23  Exelon Corp.                      10-Q        9/30/23  170:39M
          Baltimore Gas & Electric Co.
          Commonwealth Edison Co.
          Pepco Holdings LLC
          Peco Energy Co.
          Potomac Electric Power Co.
          Atlantic City Electric Co.
          Delmarva Power & Light Co./DE

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   9.23M 
 2: EX-31.01    Certification Filed by Calvin G. Butler, Jr. for    HTML     52K 
                Exelon Corporation                                               
 3: EX-31.02    Certification Filed by Jeanne M. Jones for Exelon   HTML     52K 
                Corporation                                                      
 4: EX-31.03    Certification Filed by Gil C. Quiniones for         HTML     52K 
                Commonwealth Edison Company                                      
 5: EX-31.04    Certification Filed by Joshua Levin for             HTML     52K 
                Commonwealth Edison Company                                      
 6: EX-31.05    Certification Filed by Michael A. Innocenzo for     HTML     52K 
                Peco Energy Company                                              
 7: EX-31.06    Certification Filed by Marissa Humphrey for Peco    HTML     52K 
                Energy Company                                                   
 8: EX-31.07    Certification Filed by Carim V. Khouzami for        HTML     52K 
                Baltimore Gas and Electric Company                               
 9: EX-31.08    Certification Filed by David M. Vahos for           HTML     52K 
                Baltimore Gas and Electric Company                               
10: EX-31.09    Certification Filed by J. Tyler Anthony for Pepco   HTML     52K 
                Holdings LLC                                                     
11: EX-31.10    Certification Filed by Phillip S. Barnett for       HTML     52K 
                Pepco Holdings LLC                                               
12: EX-31.11    Certification Filed by J. Tyler Anthony for         HTML     52K 
                Potomac Electric Power Company                                   
13: EX-31.12    Certification Filed by Phillip S. Barnett for       HTML     52K 
                Potomac Electric Power Company                                   
14: EX-31.13    Certification Filed by J. Tyler Anthony for         HTML     52K 
                Delmarva Power & Light Company                                   
15: EX-31.14    Certification Filed by Phillip S. Barnett for       HTML     52K 
                Delmarva Power & Light Company                                   
16: EX-31.15    Certification Filed by J. Tyler Anthony for         HTML     52K 
                Atlantic City Electric Company                                   
17: EX-31.16    Certification Filed by Phillip S. Barnett for       HTML     52K 
                Atlantic City Electric Company                                   
18: EX-32.01    Certification Filed by Calvin G. Butler, Jr. for    HTML     48K 
                Exelon Corporation                                               
19: EX-32.02    Certification Filed by Jeanne M. Jones for Exelon   HTML     48K 
                Corporation                                                      
20: EX-32.03    Certification Filed by Gil C. Quiniones for         HTML     48K 
                Commonwealth Edison Company                                      
21: EX-32.04    Certification Filed by Joshua Levin for             HTML     48K 
                Commonwealth Edison Company                                      
22: EX-32.05    Certification Filed by Michael A. Innocenzo for     HTML     48K 
                Peco Energy Company                                              
23: EX-32.06    Certification Filed by Marissa Humphrey for Peco    HTML     48K 
                Energy Company                                                   
24: EX-32.07    Certification Filed by Carim V. Khouzami for        HTML     48K 
                Baltimore Gas and Electric Company                               
25: EX-32.08    Certification Filed by David M. Vahos for           HTML     48K 
                Baltimore Gas and Electric Company                               
26: EX-32.09    Certification Filed by J. Tyler Anthony for Pepco   HTML     48K 
                Holdings LLC                                                     
27: EX-32.10    Certification Filed by Phillip S. Barnett for       HTML     48K 
                Pepco Holdings LLC                                               
28: EX-32.11    Certification Filed by J. Tyler Anthony for         HTML     48K 
                Potomac Electric Power Company                                   
29: EX-32.12    Certification Filed by Phillip S. Barnett for       HTML     48K 
                Potomac Electric Power Company                                   
30: EX-32.13    Certification Filed by J. Tyler Anthony for         HTML     48K 
                Delmarva Power & Light Company                                   
31: EX-32.14    Certification Filed by Phillip S. Barnett for       HTML     48K 
                Delmarva Power & Light Company                                   
32: EX-32.15    Certification Filed by J. Tyler Anthony for         HTML     48K 
                Atlantic City Electric Company                                   
33: EX-32.16    Certification Filed by Phillip S. Barnett for       HTML     48K 
                Atlantic City Electric Company                                   
39: R1          Cover Page                                          HTML    149K 
40: R2          Consolidated Statements of Operations and           HTML    204K 
                Comprehensive Income (Unaudited) - Exelon                        
41: R3          Consolidated Statements of Operations and           HTML    142K 
                Comprehensive Income (Unaudited) - ComEd                         
42: R4          Consolidated Statements of Operations and           HTML    142K 
                Comprehensive Income (Unaudited) - PECO                          
43: R5          Statements of Operations and Comprehensive Income   HTML    139K 
                (Unaudited) - BGE                                                
44: R6          Consolidated Statements of Operations and           HTML    138K 
                Comprehensive Income (Unaudited) - PHI                           
45: R7          Statements of Operations and Comprehensive Income   HTML    141K 
                (Unaudited) - Pepco                                              
46: R8          Statements of Operations and Comprehensive Income   HTML    139K 
                (Unaudited) - DPL                                                
47: R9          Consolidated Statements of Operations and           HTML    141K 
                Comprehensive Income (Unaudited) - ACE                           
48: R10         Consolidated Statements of Cash Flows (Unaudited)   HTML    163K 
                - Exelon                                                         
49: R11         Consolidated Statements of Cash Flows (Unaudited)   HTML    162K 
                - ComEd                                                          
50: R12         Consolidated Statements of Cash Flows (Unaudited)   HTML    159K 
                - PECO                                                           
51: R13         Statements of Cash Flows (Unaudited) - BGE          HTML    179K 
52: R14         Consolidated Statements of Cash Flows (Unaudited)   HTML    142K 
                - PHI                                                            
53: R15         Statements of Cash Flows (Unaudited) - Pepco        HTML    177K 
54: R16         Statements of Cash Flows (Unaudited) - DPL          HTML    140K 
55: R17         Consolidated Statements of Cash Flows (Unaudited)   HTML    159K 
                - ACE                                                            
56: R18         Consolidated Balance Sheets (Unaudited) - Exelon    HTML    212K 
57: R19         Consolidated Balance Sheets - Exelon                HTML     60K 
                (Parentheticals)                                                 
58: R20         Consolidated Balance Sheets (Unaudited) - ComEd     HTML    219K 
59: R21         Consolidated Balance Sheets - ComEd                 HTML     50K 
                (Parentheticals)                                                 
60: R22         Consolidated Balance Sheets (Unaudited) - PECO      HTML    250K 
61: R23         Consolidated Balance Sheets - PECO                  HTML     50K 
                (Parentheticals)                                                 
62: R24         Balance Sheets (Unaudited) - BGE                    HTML    248K 
63: R25         Balance Sheets - BGE (Parentheticals)               HTML     50K 
64: R26         Consolidated Balance Sheets (Unaudited) - PHI       HTML    215K 
65: R27         Consolidated Balance Sheets - PHI (Parentheticals)  HTML     50K 
66: R28         Balance Sheets (Unaudited) - Pepco                  HTML    217K 
67: R29         Balance Sheets (Unaudited) - Pepco                  HTML     50K 
                (Parentheticals)                                                 
68: R30         Balance Sheets (Unaudited) - DPL                    HTML    250K 
69: R31         Balance Sheets - DPL (Parentheticals)               HTML     50K 
70: R32         Consolidated Balance Sheets (Unaudited) - ACE       HTML    252K 
71: R33         Consolidated Balance Sheets - ACE (Parentheticals)  HTML     50K 
72: R34         Consolidated Statements of Changes in Shareholders  HTML    154K 
                Equity (Unaudited) - Exelon                                      
73: R35         Consolidated Statements of Changes in Shareholders  HTML     50K 
                Equity - Exelon (Parentheticals)                                 
74: R36         Consolidated Statements of Changes in Shareholders  HTML     88K 
                Equity (Unaudited) - ComEd                                       
75: R37         Consolidated Statements of Changes in Shareholders  HTML     86K 
                Equity (Unaudited) - PECO                                        
76: R38         Statements of Changes in Shareholders Equity        HTML     85K 
                (Unaudited) - BGE                                                
77: R39         Consolidated Statements of Changes in Member's      HTML     84K 
                Equity (Unaudited) - PHI                                         
78: R40         Statements of Changes in Shareholders Equity        HTML     86K 
                (Unaudited) - Pepco                                              
79: R41         Statements of Changes in Shareholders Equity        HTML     85K 
                (Unaudited) - DPL                                                
80: R42         Consolidated Statements of Changes in Shareholders  HTML     86K 
                Equity (Unaudited) - ACE                                         
81: R43         Significant Accounting Policies (All Registrants)   HTML     68K 
82: R44         Discontinued Operations (Exelon)                    HTML     88K 
83: R45         Regulatory Matters (All Registrants)                HTML    172K 
84: R46         Revenue from Contracts with Customers (All          HTML    120K 
                Registrants)                                                     
85: R47         Segment Information (All Registrants)               HTML    762K 
86: R48         Accounts Receivable (All Registrants)               HTML    250K 
87: R49         Income Taxes (All Registrants)                      HTML    209K 
88: R50         Retirement Benefits (All Registrants)               HTML    128K 
89: R51         Derivative Financial Instruments (All Registrants)  HTML    131K 
90: R52         Debt and Credit Agreements (All Registrants)        HTML    117K 
91: R53         Fair Value of Financial Assets and Liabilities      HTML    575K 
                (All Registrants)                                                
92: R54         Commitments and Contingencies (All Registrants)     HTML    250K 
93: R55         Shareholders' Equity (Exelon)                       HTML     55K 
94: R56         Changes in Accumulated Other Comprehensive Income   HTML    118K 
                (Exelon)                                                         
95: R57         Supplemental Financial Information (All             HTML    383K 
                Registrants)                                                     
96: R58         Related Party Transactions (All Registrants)        HTML    239K 
97: R59         Significant Accounting Policies (Policies)          HTML     68K 
98: R60         Discontinued Operations (Tables)                    HTML     78K 
99: R61         Regulatory Matters (Tables)                         HTML    149K 
100: R62         Revenue from Contracts with Customers (Tables)      HTML    117K  
101: R63         Segment Information (Tables)                        HTML    760K  
102: R64         Accounts Receivable (Tables)                        HTML    253K  
103: R65         Income Taxes (Tables)                               HTML    202K  
104: R66         Retirement Benefits (Tables)                        HTML    128K  
105: R67         Derivative Instruments and Hedging Activities       HTML    133K  
                (Tables)                                                         
106: R68         Debt and Credit Agreements (All Registrants)        HTML    115K  
                (Tables)                                                         
107: R69         Fair Value of Financial Assets and Liabilities      HTML    578K  
                (Tables)                                                         
108: R70         Commitments and Contingencies (Tables)              HTML    211K  
109: R71         Changes in Accumulated Other Comprehensive Income   HTML    121K  
                (Tables)                                                         
110: R72         Supplemental Financial Information (Tables)         HTML    388K  
111: R73         Related Party Transactions (Tables)                 HTML    240K  
112: R74         Discontinued Operations and Disposal Groups         HTML    183K  
                (Details) - Narrative                                            
113: R75         Discontinued Operations and Disposal Groups         HTML    112K  
                (Details) - Income Statement                                     
114: R76         Discontinued Operations and Disposal Groups         HTML     83K  
                (Details) - Cash Flows                                           
115: R77         Regulatory Matters - Narrative (Details)            HTML    156K  
116: R78         Regulatory Matters - Schedule of Completed Rate     HTML    149K  
                Cases (Details)                                                  
117: R79         Regulatory Matters - Schedule of Pending Rate       HTML    161K  
                Cases (Details)                                                  
118: R80         Regulatory Matters - Annual Electric Transmission   HTML     88K  
                Fillings (Details)                                               
119: R81         Regulatory Matters - Energy Efficiency Formula      HTML     68K  
                Rate (Details)                                                   
120: R82         Regulatory Matters - Capitalized Ratemaking Amount  HTML     65K  
                Not Recognized (Details)                                         
121: R83         Revenue from Contracts with Customers - Change in   HTML     67K  
                Contract with Customer, Asset and Liability                      
                (Details)                                                        
122: R84         Revenue from Contract with Customer - Performance   HTML    105K  
                Obligations (Details)                                            
123: R85         Segment Information - Narrative (Details)           HTML     51K  
124: R86         Segment Information - Reconciliation to             HTML    309K  
                Consolidated Financial Statements (Details)                      
125: R87         Segment Information - Electric and Gas Revenue by   HTML    295K  
                Customer Class (Details)                                         
126: R88         Accounts Receivable - Allowance for Credit Losses   HTML    115K  
                Rollforward (Details)                                            
127: R89         Accounts Receivable - Unbilled Customer Revenue     HTML     64K  
                (Details)                                                        
128: R90         Accounts Receivable - Purchases and Sales of        HTML     69K  
                Accounts Receivable (Detail)                                     
129: R91         Income Taxes - Narrative (Details)                  HTML     66K  
130: R92         Income Taxes - Reconciliation to Effective Tax      HTML    132K  
                Rate (Details)                                                   
131: R93         Income Taxes - Unrecognized Tax Benefits (Details)  HTML     56K  
132: R94         Income Taxes - Allocation of Tax Benefits           HTML     63K  
                (Details)                                                        
133: R95         Retirement Benefits - Narrative (Details)           HTML     67K  
134: R96         Retirement Benefits - Calculation of Net Periodic   HTML     79K  
                Benefit Cost (Details)                                           
135: R97         Retirement Benefits - Allocated Portion of Pension  HTML     78K  
                and Postretirement Benefit Plan Costs (Details)                  
136: R98         Retirement Benefits - Defined Contribution Savings  HTML     68K  
                Plans (Details)                                                  
137: R99         Derivative Financial Instruments - Narrative        HTML    104K  
                (Details)                                                        
138: R100        Derivative Financial Instruments - Summary of       HTML     87K  
                Interest Rate Hedge Balances (Details)                           
139: R101        Derivative Financial Instruments - Summary of       HTML     57K  
                Notional Amounts of Outstanding Derivative                       
                Positions (Details)                                              
140: R102        Derivative Financial Instruments - Summary of       HTML     57K  
                Derivatives Not Designated as Hedging Instruments                
                (Details)                                                        
141: R103        Derivative Financial Instruments - Summary of       HTML     60K  
                Economic Hedges (Details)                                        
142: R104        Derivative Financial Instruments - Summary of       HTML     69K  
                Counterparty Collateral (Details)                                
143: R105        Debt and Credit Agreements (All Registrants) -      HTML    120K  
                Narrative (Details)                                              
144: R106        Debt and Credit Agreements (All Registrants) -      HTML     72K  
                Commercial Paper Borrowings (Details)                            
145: R107        Debt and Credit Agreements (All Registrants) -      HTML     74K  
                Summary of Revolving Credit Agreements (Details)                 
146: R108        Debt and Credit Agreements (All Registrants) -      HTML    111K  
                Issuance of Long-Term Debt (Details)                             
147: R109        Fair Value of Financial Assets and Liabilities -    HTML    134K  
                Fair Value of Financial Liabilities Recorded at                  
                Amortized Cost (Details)                                         
148: R110        Fair Value of Financial Assets and Liabilities -    HTML    422K  
                Fair Value Measurements of Assets and Liabilities,               
                Recurring and Nonrecurring (Details)                             
149: R111        Fair Value of Financial Assets and Liabilities -    HTML    109K  
                Fair Value Assets Liabilities Measured On                        
                Recurring Basis Unobservable Input Reconciliation                
                (Details)                                                        
150: R112        Fair Value of Financial Assets and Liabilities -    HTML     67K  
                Fair Value Inputs Assets Quantitative Information                
                (Details)                                                        
151: R113        Commitments and Contingencies - Narrative           HTML     98K  
                (Details)                                                        
152: R114        Commitments and Contingencies - Merger Commitment   HTML     68K  
                (Details)                                                        
153: R115        Commitments and Contingencies - Schedule of         HTML    159K  
                Commercial Commitments (Details)                                 
154: R116        Commitments and Contingencies - Schedule of         HTML     77K  
                Accruals for Environmental Matters (Details)                     
155: R117        Shareholders' Equity - Narrative (Details)          HTML     50K  
156: R118        Changes in Accumulated Other Comprehensive Income   HTML    104K  
                - Schedule of Changes in AOCI (Details)                          
157: R119        Changes in Accumulated Other Comprehensive Income   HTML     62K  
                - Income Taxes Allocated to Other Comprehensive                  
                Income (Loss) Components (Details)                               
158: R120        Supplemental Financial Information - Taxes Other    HTML     75K  
                Than Income Taxes (Details)                                      
159: R121        Supplemental Financial Information - Operations     HTML     72K  
                (Detail)                                                         
160: R122        Supplemental Financial Information - Cash Flow      HTML    174K  
                (Details)                                                        
161: R123        Supplemental Financial Information - Balance Sheet  HTML    112K  
                (Details)                                                        
162: R124        Related Party Transactions - Utility Registrants'   HTML     65K  
                expense with Generation (Details)                                
163: R125        Related Party Transactions - BSC and PHISCO         HTML     84K  
                Service Companies (Details)                                      
164: R126        Related Party Transactions - Current Receivables    HTML    167K  
                From/Payables To Affiliates (Details)                            
165: R127        Related Party Transactions - Long Term Debt to      HTML     69K  
                Financing Trusts (Details)                                       
168: XML         IDEA XML File -- Filing Summary                      XML    282K  
166: XML         XBRL Instance -- exc-20230930_htm                    XML  14.86M  
167: EXCEL       IDEA Workbook of Financial Report Info              XLSX    491K  
35: EX-101.CAL  XBRL Calculations -- exc-20230930_cal                XML    309K 
36: EX-101.DEF  XBRL Definitions -- exc-20230930_def                 XML   3.37M 
37: EX-101.LAB  XBRL Labels -- exc-20230930_lab                      XML   2.70M 
38: EX-101.PRE  XBRL Presentations -- exc-20230930_pre               XML   3.71M 
34: EX-101.SCH  XBRL Schema -- exc-20230930                          XSD    361K 
169: JSON        XBRL Instance as JSON Data -- MetaLinks              746±  1.22M  
170: ZIP         XBRL Zipped Folder -- 0001109357-23-000097-xbrl      Zip   1.15M  


‘EX-101.SCH’   —   XBRL Schema — exc-20230930


This Exhibit is an XBRL File.


                                                                                                                                                                                
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<link:definition> 0000043 - Disclosure - Significant Accounting Policies (All Registrants) </link:definition>
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<link:definition> 0000045 - Disclosure - Regulatory Matters (All Registrants) </link:definition>
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<link:definition> 0000046 - Disclosure - Revenue from Contracts with Customers (All Registrants) </link:definition>
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<link:definition> 0000048 - Disclosure - Accounts Receivable (All Registrants) </link:definition>
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<link:definition> 0000054 - Disclosure - Fair Value of Financial Assets and Liabilities (All Registrants) </link:definition>
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<link:definition> 0000058 - Disclosure - Supplemental Financial Information (All Registrants) </link:definition>
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<link:definition> 0000059 - Disclosure - Related Party Transactions (All Registrants) </link:definition>
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<link:definition> 9954471 - Disclosure - Significant Accounting Policies (Policies) </link:definition>
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<link:definition> 9954473 - Disclosure - Regulatory Matters (Tables) </link:definition>
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<link:roleType id="RevenuefromContractswithCustomersTables" roleURI="http://www.exeloncorp.com/role/RevenuefromContractswithCustomersTables">
<link:definition> 9954474 - Disclosure - Revenue from Contracts with Customers (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentInformationTables" roleURI="http://www.exeloncorp.com/role/SegmentInformationTables">
<link:definition> 9954475 - Disclosure - Segment Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccountsReceivableTables" roleURI="http://www.exeloncorp.com/role/AccountsReceivableTables">
<link:definition> 9954476 - Disclosure - Accounts Receivable (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AssetImpairmentsTables" roleURI="http://www.exeloncorp.com/role/AssetImpairmentsTables">
<link:definition> 9954477 - Disclosure - Asset Impairments (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesTables" roleURI="http://www.exeloncorp.com/role/IncomeTaxesTables">
<link:definition> 9954478 - Disclosure - Income Taxes (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RetirementBenefitsTables" roleURI="http://www.exeloncorp.com/role/RetirementBenefitsTables">
<link:definition> 9954479 - Disclosure - Retirement Benefits (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeInstrumentsandHedgingActivitiesTables" roleURI="http://www.exeloncorp.com/role/DerivativeInstrumentsandHedgingActivitiesTables">
<link:definition> 9954480 - Disclosure - Derivative Instruments and Hedging Activities (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtandCreditAgreementsAllRegistrantsTables" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsAllRegistrantsTables">
<link:definition> 9954481 - Disclosure - Debt and Credit Agreements (All Registrants) (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueofFinancialAssetsandLiabilitiesTables" roleURI="http://www.exeloncorp.com/role/FairValueofFinancialAssetsandLiabilitiesTables">
<link:definition> 9954482 - Disclosure - Fair Value of Financial Assets and Liabilities (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingenciesTables" roleURI="http://www.exeloncorp.com/role/CommitmentsandContingenciesTables">
<link:definition> 9954483 - Disclosure - Commitments and Contingencies (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ChangesinAccumulatedOtherComprehensiveIncomeTables" roleURI="http://www.exeloncorp.com/role/ChangesinAccumulatedOtherComprehensiveIncomeTables">
<link:definition> 9954484 - Disclosure - Changes in Accumulated Other Comprehensive Income (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SupplementalFinancialInformationTables" roleURI="http://www.exeloncorp.com/role/SupplementalFinancialInformationTables">
<link:definition> 9954485 - Disclosure - Supplemental Financial Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RelatedPartyTransactionsTables" roleURI="http://www.exeloncorp.com/role/RelatedPartyTransactionsTables">
<link:definition> 9954486 - Disclosure - Related Party Transactions (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DiscontinuedOperationsandDisposalGroupsDetailsNarrative" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsandDisposalGroupsDetailsNarrative">
<link:definition> 9954487 - Disclosure - Discontinued Operations and Disposal Groups (Details) - Narrative </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DiscontinuedOperationsandDisposalGroupsDetailsIncomeStatement" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsandDisposalGroupsDetailsIncomeStatement">
<link:definition> 9954488 - Disclosure - Discontinued Operations and Disposal Groups (Details) - Income Statement </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DiscontinuedOperationsandDisposalGroupsDetailsCashFlows" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsandDisposalGroupsDetailsCashFlows">
<link:definition> 9954489 - Disclosure - Discontinued Operations and Disposal Groups (Details) - Cash Flows </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryMattersNarrativeDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersNarrativeDetails">
<link:definition> 9954490 - Disclosure - Regulatory Matters - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryMattersScheduleofCompletedRateCasesDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersScheduleofCompletedRateCasesDetails">
<link:definition> 9954491 - Disclosure - Regulatory Matters - Schedule of Completed Rate Cases (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryMattersScheduleofPendingRateCasesDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersScheduleofPendingRateCasesDetails">
<link:definition> 9954492 - Disclosure - Regulatory Matters - Schedule of Pending Rate Cases (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryMattersAnnualElectricTransmissionFillingsDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersAnnualElectricTransmissionFillingsDetails">
<link:definition> 9954493 - Disclosure - Regulatory Matters - Annual Electric Transmission Fillings (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryMattersEnergyEfficiencyFormulaRateDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersEnergyEfficiencyFormulaRateDetails">
<link:definition> 9954494 - Disclosure - Regulatory Matters - Energy Efficiency Formula Rate (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryMattersCapitalizedRatemakingAmountNotRecognizedDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersCapitalizedRatemakingAmountNotRecognizedDetails">
<link:definition> 9954495 - Disclosure - Regulatory Matters - Capitalized Ratemaking Amount Not Recognized (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RevenuefromContractswithCustomersChangeinContractwithCustomerAssetandLiabilityDetails" roleURI="http://www.exeloncorp.com/role/RevenuefromContractswithCustomersChangeinContractwithCustomerAssetandLiabilityDetails">
<link:definition> 9954496 - Disclosure - Revenue from Contracts with Customers - Change in Contract with Customer, Asset and Liability (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RevenuefromContractwithCustomerPerformanceObligationsDetails" roleURI="http://www.exeloncorp.com/role/RevenuefromContractwithCustomerPerformanceObligationsDetails">
<link:definition> 9954497 - Disclosure - Revenue from Contract with Customer - Performance Obligations (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RevenuefromContractwithCustomerPerformanceObligationsDetails_1" roleURI="http://www.exeloncorp.com/role/RevenuefromContractwithCustomerPerformanceObligationsDetails_1">
<link:definition> 9954497 - Disclosure - Revenue from Contract with Customer - Performance Obligations (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentInformationNarrativeDetails" roleURI="http://www.exeloncorp.com/role/SegmentInformationNarrativeDetails">
<link:definition> 9954498 - Disclosure - Segment Information - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentInformationReconciliationtoConsolidatedFinancialStatementsDetails" roleURI="http://www.exeloncorp.com/role/SegmentInformationReconciliationtoConsolidatedFinancialStatementsDetails">
<link:definition> 9954499 - Disclosure - Segment Information - Reconciliation to Consolidated Financial Statements (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentInformationElectricandGasRevenuebyCustomerClassDetails" roleURI="http://www.exeloncorp.com/role/SegmentInformationElectricandGasRevenuebyCustomerClassDetails">
<link:definition> 9954500 - Disclosure - Segment Information - Electric and Gas Revenue by Customer Class (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccountsReceivableAllowanceforCreditLossesRollforwardDetails" roleURI="http://www.exeloncorp.com/role/AccountsReceivableAllowanceforCreditLossesRollforwardDetails">
<link:definition> 9954501 - Disclosure - Accounts Receivable - Allowance for Credit Losses Rollforward (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccountsReceivableUnbilledCustomerRevenueDetails" roleURI="http://www.exeloncorp.com/role/AccountsReceivableUnbilledCustomerRevenueDetails">
<link:definition> 9954502 - Disclosure - Accounts Receivable - Unbilled Customer Revenue (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccountsReceivablePurchasesandSalesofAccountsReceivableDetail" roleURI="http://www.exeloncorp.com/role/AccountsReceivablePurchasesandSalesofAccountsReceivableDetail">
<link:definition> 9954503 - Disclosure - Accounts Receivable - Purchases and Sales of Accounts Receivable (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AssetImpairmentsNarrativeDetails" roleURI="http://www.exeloncorp.com/role/AssetImpairmentsNarrativeDetails">
<link:definition> 9954504 - Disclosure - Asset Impairments - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesNarrativeDetails" roleURI="http://www.exeloncorp.com/role/IncomeTaxesNarrativeDetails">
<link:definition> 9954505 - Disclosure - Income Taxes - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesReconciliationtoEffectiveTaxRateDetails" roleURI="http://www.exeloncorp.com/role/IncomeTaxesReconciliationtoEffectiveTaxRateDetails">
<link:definition> 9954506 - Disclosure - Income Taxes - Reconciliation to Effective Tax Rate (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesUnrecognizedTaxBenefitsDetails" roleURI="http://www.exeloncorp.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetails">
<link:definition> 9954507 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesAllocationofTaxBenefitsDetails" roleURI="http://www.exeloncorp.com/role/IncomeTaxesAllocationofTaxBenefitsDetails">
<link:definition> 9954508 - Disclosure - Income Taxes - Allocation of Tax Benefits (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RetirementBenefitsNarrativeDetails" roleURI="http://www.exeloncorp.com/role/RetirementBenefitsNarrativeDetails">
<link:definition> 9954509 - Disclosure - Retirement Benefits - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RetirementBenefitsCalculationofNetPeriodicBenefitCostDetails" roleURI="http://www.exeloncorp.com/role/RetirementBenefitsCalculationofNetPeriodicBenefitCostDetails">
<link:definition> 9954510 - Disclosure - Retirement Benefits - Calculation of Net Periodic Benefit Cost (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RetirementBenefitsAllocatedPortionofPensionandPostretirementBenefitPlanCostsDetails" roleURI="http://www.exeloncorp.com/role/RetirementBenefitsAllocatedPortionofPensionandPostretirementBenefitPlanCostsDetails">
<link:definition> 9954511 - Disclosure - Retirement Benefits - Allocated Portion of Pension and Postretirement Benefit Plan Costs (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RetirementBenefitsDefinedContributionSavingsPlansDetails" roleURI="http://www.exeloncorp.com/role/RetirementBenefitsDefinedContributionSavingsPlansDetails">
<link:definition> 9954512 - Disclosure - Retirement Benefits - Defined Contribution Savings Plans (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstrumentsNarrativeDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsNarrativeDetails">
<link:definition> 9954513 - Disclosure - Derivative Financial Instruments - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstrumentsSummaryofInterestRateHedgeBalancesDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsSummaryofInterestRateHedgeBalancesDetails">
<link:definition> 9954514 - Disclosure - Derivative Financial Instruments - Summary of Interest Rate Hedge Balances (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstrumentsSummaryofNotionalAmountsofOutstandingDerivativePositionsDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsSummaryofNotionalAmountsofOutstandingDerivativePositionsDetails">
<link:definition> 9954515 - Disclosure - Derivative Financial Instruments - Summary of Notional Amounts of Outstanding Derivative Positions (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstrumentsSummaryofDerivativesNotDesignatedasHedgingInstrumentsDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsSummaryofDerivativesNotDesignatedasHedgingInstrumentsDetails">
<link:definition> 9954516 - Disclosure - Derivative Financial Instruments - Summary of Derivatives Not Designated as Hedging Instruments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstrumentsSummaryofEconomicHedgesDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsSummaryofEconomicHedgesDetails">
<link:definition> 9954517 - Disclosure - Derivative Financial Instruments - Summary of Economic Hedges (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstrumentsSummaryofCounterpartyCollateralDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsSummaryofCounterpartyCollateralDetails">
<link:definition> 9954518 - Disclosure - Derivative Financial Instruments - Summary of Counterparty Collateral (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtandCreditAgreementsAllRegistrantsNarrativeDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsAllRegistrantsNarrativeDetails">
<link:definition> 9954519 - Disclosure - Debt and Credit Agreements (All Registrants) - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtandCreditAgreementsAllRegistrantsCommercialPaperBorrowingsDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsAllRegistrantsCommercialPaperBorrowingsDetails">
<link:definition> 9954520 - Disclosure - Debt and Credit Agreements (All Registrants) - Commercial Paper Borrowings (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtandCreditAgreementsAllRegistrantsSummaryofRevolvingCreditAgreementsDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsAllRegistrantsSummaryofRevolvingCreditAgreementsDetails">
<link:definition> 9954521 - Disclosure - Debt and Credit Agreements (All Registrants) - Summary of Revolving Credit Agreements (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DebtandCreditAgreementsAllRegistrantsIssuanceofLongTermDebtDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsAllRegistrantsIssuanceofLongTermDebtDetails">
<link:definition> 9954522 - Disclosure - Debt and Credit Agreements (All Registrants) - Issuance of Long-Term Debt (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialLiabilitiesRecordedatAmortizedCostDetails" roleURI="http://www.exeloncorp.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialLiabilitiesRecordedatAmortizedCostDetails">
<link:definition> 9954523 - Disclosure - Fair Value of Financial Assets and Liabilities - Fair Value of Financial Liabilities Recorded at Amortized Cost (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueofFinancialAssetsandLiabilitiesFairValueMeasurementsofAssetsandLiabilitiesRecurringandNonrecurringDetails" roleURI="http://www.exeloncorp.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueMeasurementsofAssetsandLiabilitiesRecurringandNonrecurringDetails">
<link:definition> 9954524 - Disclosure - Fair Value of Financial Assets and Liabilities - Fair Value Measurements of Assets and Liabilities, Recurring and Nonrecurring (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueofFinancialAssetsandLiabilitiesFairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationDetails" roleURI="http://www.exeloncorp.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationDetails">
<link:definition> 9954525 - Disclosure - Fair Value of Financial Assets and Liabilities - Fair Value Assets Liabilities Measured On Recurring Basis Unobservable Input Reconciliation (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueofFinancialAssetsandLiabilitiesFairValueInputsAssetsQuantitativeInformationDetails" roleURI="http://www.exeloncorp.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueInputsAssetsQuantitativeInformationDetails">
<link:definition> 9954526 - Disclosure - Fair Value of Financial Assets and Liabilities - Fair Value Inputs Assets Quantitative Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingenciesNarrativeDetails" roleURI="http://www.exeloncorp.com/role/CommitmentsandContingenciesNarrativeDetails">
<link:definition> 9954527 - Disclosure - Commitments and Contingencies - Narrative (Details) </link:definition>
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<xs:element id="exc_PublicUtilitiesDistributionRateCasesTableTextBlock" abstract="false" name="PublicUtilitiesDistributionRateCasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_TotalTransactionAndTransitionCostsIncurredRelatedToTheSeparation" abstract="false" name="TotalTransactionAndTransitionCostsIncurredRelatedToTheSeparation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_Maryland2023GasDistributionReconciliationRateCaseMember" abstract="true" name="Maryland2023GasDistributionReconciliationRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_AmortizationofPriorServiceCostBenefitandActuarialLossAbstract" abstract="true" name="AmortizationofPriorServiceCostBenefitandActuarialLossAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_EnergyRelatedOptions" abstract="false" name="EnergyRelatedOptions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_AlternativeRevenueProgramsMember" abstract="true" name="AlternativeRevenueProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_NuclearDecommissioningMember" abstract="true" name="NuclearDecommissioningMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_IncomeTaxAdditionalNarrativeInformationLineItems" abstract="true" name="IncomeTaxAdditionalNarrativeInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_SupplementalFinancialInformationAbstract" abstract="true" name="SupplementalFinancialInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ExelonGenerationCoLLCMember" abstract="true" name="ExelonGenerationCoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_SupplementalCashFlowInformationTable" abstract="true" name="SupplementalCashFlowInformationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_ChangeInContractWithCustomerAssetAndLiabilityLineItems" abstract="true" name="ChangeInContractWithCustomerAssetAndLiabilityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_SeniorNotes540June2053Member" abstract="true" name="SeniorNotes540June2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_Notes515Mar2028Member" abstract="true" name="Notes515Mar2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_Maryland2020ElectricDistributionBaseRateCaseMember" abstract="true" name="Maryland2020ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PecoEnergyCoAffiliateMember" abstract="true" name="PecoEnergyCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_InterestRateSwapNotional10YRMember" abstract="true" name="InterestRateSwapNotional10YRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ApprovedCapitalExpenditure" abstract="false" name="ApprovedCapitalExpenditure" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_SupplementalBalanceSheetInformationLineItems" abstract="true" name="SupplementalBalanceSheetInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_A2023Member" abstract="true" name="A2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_Maryland2023ElectricDistributionBaseRateCaseMember" abstract="true" name="Maryland2023ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_CommitmentsAndContingenciesAdditionalNarrativeInformationLineItems" abstract="true" name="CommitmentsAndContingenciesAdditionalNarrativeInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_Maryland2023GasDistributionBaseRateCaseMember" abstract="true" name="Maryland2023GasDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PepcoHoldingsLLCAffiliateMember" abstract="true" name="PepcoHoldingsLLCAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_Notes530Mar2033Member" abstract="true" name="Notes530Mar2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PeriodDomain" abstract="true" name="PeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PublicUtilitiesRequestedRateIncreaseDecreasePriorYearAnnualReconciliation" abstract="false" name="PublicUtilitiesRequestedRateIncreaseDecreasePriorYearAnnualReconciliation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_DistributionOfConstellation" abstract="false" name="DistributionOfConstellation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_MovementinAccumulatedOtherComprehensiveIncomeRollForward" abstract="true" name="MovementinAccumulatedOtherComprehensiveIncomeRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_AtlanticCityElectricCoAffiliateMember" abstract="true" name="AtlanticCityElectricCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_CurrentRequestedRevenueIncrease20242027" abstract="false" name="CurrentRequestedRevenueIncrease20242027" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_PepcoMaryland2023ElectricDistributionBaseRateCaseMember" abstract="true" name="PepcoMaryland2023ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_InterestRateDerivativeLiabilitiesMember" abstract="true" name="InterestRateDerivativeLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_DecreaseIncreaseInPPERelatedToAROUpdate" abstract="false" name="DecreaseIncreaseInPPERelatedToAROUpdate" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_PecoTrustFourAffiliateMember" abstract="true" name="PecoTrustFourAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_RegulatoryMattersPendingRateCasesLineItems" abstract="true" name="RegulatoryMattersPendingRateCasesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_A2022Member" abstract="true" name="A2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_A2021Member" abstract="true" name="A2021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_BasispointsforComEdsRevenueRequirement" abstract="false" name="BasispointsforComEdsRevenueRequirement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
<xs:element id="exc_PepcoFMB557Mar2053Member" abstract="true" name="PepcoFMB557Mar2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ResidentialMember" abstract="true" name="ResidentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ScheduleOfEnergyEfficiencyFormulaRateUpdatesTable" abstract="true" name="ScheduleOfEnergyEfficiencyFormulaRateUpdatesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_ElectricEnergyCostsMember" abstract="true" name="ElectricEnergyCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ExelonBusinessServicesCoAffiliateMember" abstract="true" name="ExelonBusinessServicesCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_EquityDistributionAgreement" abstract="false" name="EquityDistributionAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ShortTermDebt03232017Member" abstract="true" name="ShortTermDebt03232017Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_OverRecoveredRevenueDecouplingMember" abstract="true" name="OverRecoveredRevenueDecouplingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_Illinois2023ElectricDistributionBaseRateCaseMember" abstract="true" name="Illinois2023ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_RegulatoryMattersAdditionalNarrativeInformationTable" abstract="true" name="RegulatoryMattersAdditionalNarrativeInformationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_InsurersSettlementPayment" abstract="false" name="InsurersSettlementPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_Illinois2023ElectricDistributionReconciliationRateCaseMember" abstract="true" name="Illinois2023ElectricDistributionReconciliationRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PublicAuthoritiesElectricRailroadsMember" abstract="true" name="PublicAuthoritiesElectricRailroadsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_RabbiTrustInvestmentsMember" abstract="true" name="RabbiTrustInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_EnvironmentalLiabilityBuzzardPoint" abstract="false" name="EnvironmentalLiabilityBuzzardPoint" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsDomain" abstract="true" name="PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_DelawareDE2022ElectricDistributionBaseRateCaseMember" abstract="true" name="DelawareDE2022ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PECOFMB575MMember" abstract="true" name="PECOFMB575MMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_BeneficialElectrificationApprovedAnnualSpending" abstract="false" name="BeneficialElectrificationApprovedAnnualSpending" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_AccountsReceivableRelatedPartiesPurchase" abstract="false" name="AccountsReceivableRelatedPartiesPurchase" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ConstantMaturityTreasuryInterestRateSwapsMember" abstract="true" name="ConstantMaturityTreasuryInterestRateSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_FootnotesToFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationAbstract" abstract="true" name="FootnotesToFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_IllinoisChamberOfCommerceMember" abstract="true" name="IllinoisChamberOfCommerceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ScheduleOfEnergyEfficiencyFormulaRateUpdatesLineItems" abstract="true" name="ScheduleOfEnergyEfficiencyFormulaRateUpdatesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_InterestRateSwapTerminatedMember" abstract="true" name="InterestRateSwapTerminatedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PenaltyDomain" abstract="true" name="PenaltyDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_IncrementalCollateralForLossOfInvestmentGradeCreditRating" abstract="false" name="IncrementalCollateralForLossOfInvestmentGradeCreditRating" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_OtherDecommissioningRelatedActivity" abstract="false" name="OtherDecommissioningRelatedActivity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_FairValueInputsForwardPowerPrice" abstract="false" name="FairValueInputsForwardPowerPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
<xs:element id="exc_AccumulatedOtherComprehensiveIncomeLossTextBlock" abstract="false" name="AccumulatedOtherComprehensiveIncomeLossTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_IncomeTaxAdditionalNarrativeInformationTable" abstract="true" name="IncomeTaxAdditionalNarrativeInformationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_AdjustmentsToReconcileFederalStatutoryIncomeTaxRateToEffectiveIncomeTaxRateContinuingOperationsAbstract" abstract="true" name="AdjustmentsToReconcileFederalStatutoryIncomeTaxRateToEffectiveIncomeTaxRateContinuingOperationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_Notes560Mar2053Member" abstract="true" name="Notes560Mar2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ElectricOperatingRevenuesMember" abstract="true" name="ElectricOperatingRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_FirstMortgageBondsMember" abstract="true" name="FirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_OtherNonCashActivityMember" abstract="true" name="OtherNonCashActivityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_DPLFMB572Nov2053Member" abstract="true" name="DPLFMB572Nov2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_FMB490Feb2033Member" abstract="true" name="FMB490Feb2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_CarbonMitigationCreditRiderMember" abstract="true" name="CarbonMitigationCreditRiderMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_CaponEquityComponentofRateofReturnonCommonEquityinFederalEnergyRegulatoryCommitteeComplaint" abstract="false" name="CaponEquityComponentofRateofReturnonCommonEquityinFederalEnergyRegulatoryCommitteeComplaint" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="exc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisFinancialStatementCaptionsLineItems" abstract="true" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisFinancialStatementCaptionsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_PerformanceMetricsPenaltyMember" abstract="true" name="PerformanceMetricsPenaltyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" abstract="true" name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_Maryland2023ElectricDistributionReconciliationRateCaseMember" abstract="true" name="Maryland2023ElectricDistributionReconciliationRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_RelatedPartyTransactionUtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses" abstract="false" name="RelatedPartyTransactionUtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_IntercompanyMoneyPoolInvestmentsContributions" abstract="false" name="IntercompanyMoneyPoolInvestmentsContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ScheduleOfTaxesExcludingIncomeAndExciseTaxesTableTextBlock" abstract="false" name="ScheduleOfTaxesExcludingIncomeAndExciseTaxesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_ContractTerminationLiability" abstract="false" name="ContractTerminationLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_TrueUpAdjustmentsToDecouplingMechanismsAndFormulaRates" abstract="false" name="TrueUpAdjustmentsToDecouplingMechanismsAndFormulaRates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_SmallCommercialIndustrialMember" abstract="true" name="SmallCommercialIndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_DiscontinuedOperationsCashFlowsTableTextBlock" abstract="false" name="DiscontinuedOperationsCashFlowsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_EconomicHedgingInstrumentLiabilitesMember" abstract="true" name="EconomicHedgingInstrumentLiabilitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ComEd2022EnergyEfficiencyFormulaRateDomain" abstract="true" name="ComEd2022EnergyEfficiencyFormulaRateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_AtlanticCityElectricCompanyMember" abstract="true" name="AtlanticCityElectricCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_RevenuesFromRelatedParties" abstract="false" name="RevenuesFromRelatedParties" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ExelonGenerationCoLlcAffiliateMember" abstract="true" name="ExelonGenerationCoLlcAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_AllocationOfTaxBenefitsLineItems" abstract="true" name="AllocationOfTaxBenefitsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_DerivativesDesignatedAsHedgingInstrumentsLiabilitiesMember" abstract="true" name="DerivativesDesignatedAsHedgingInstrumentsLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ShortTermDebtSOFRplus075Oct2023Member" abstract="true" name="ShortTermDebtSOFRplus075Oct2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_AllocationOfTaxBenefitsTable" abstract="true" name="AllocationOfTaxBenefitsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_DueFromToRelatedPartyCurrent" abstract="false" name="DueFromToRelatedPartyCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_InitialRequestedRevenueIncrease20242027" abstract="false" name="InitialRequestedRevenueIncrease20242027" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_RegulatoryMattersAdditionalNarrativeInformationLineItems" abstract="true" name="RegulatoryMattersAdditionalNarrativeInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_PeriodAxis" abstract="true" name="PeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="exc_CollateralMember" abstract="true" name="CollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_AllocationOfFederalTaxBenefitUnderTaxSharingAgreement" abstract="false" name="AllocationOfFederalTaxBenefitUnderTaxSharingAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_DiscontinuedOperationsIncomeStatementTableTextBlock" abstract="false" name="DiscontinuedOperationsIncomeStatementTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_Maryland2020GasDistributionBaseRateCaseMember" abstract="true" name="Maryland2020GasDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PotomacElectricPowerCoAffiliateMember" abstract="true" name="PotomacElectricPowerCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PublicUtilitiesEnergyEfficiencyRevenueTableTextBlock" abstract="false" name="PublicUtilitiesEnergyEfficiencyRevenueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_InterestRateSwapNotional5YRMember" abstract="true" name="InterestRateSwapNotional5YRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIncludedInRegulatoryassets" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIncludedInRegulatoryassets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ShortTermDebtSOFRplus100May72024Member" abstract="true" name="ShortTermDebtSOFRplus100May72024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_PecoTrustThreeAffiliateMember" abstract="true" name="PecoTrustThreeAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_EnvironmentalLiabilityAnacostia" abstract="false" name="EnvironmentalLiabilityAnacostia" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_AtTheMarketProgramTable" abstract="true" name="AtTheMarketProgramTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_Revenue" abstract="false" name="Revenue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_RelatedPartyTransactionsLongTermDebttoFinancingTrustsTableTextBlock" abstract="false" name="RelatedPartyTransactionsLongTermDebttoFinancingTrustsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_InterestRateandForeignCurrencyDerivativeAssetsMember" abstract="true" name="InterestRateandForeignCurrencyDerivativeAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_AllocationOfTaxBenefitsTableTextBlock" abstract="false" name="AllocationOfTaxBenefitsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_MaximumIncreaseOfRevenueRequirement" abstract="false" name="MaximumIncreaseOfRevenueRequirement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="exc_DPLFMB545Nov2033Member" abstract="true" name="DPLFMB545Nov2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_TotalTransactionCostsRelatingToTheSeparation" abstract="false" name="TotalTransactionCostsRelatingToTheSeparation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_MgpSiteContingencyMonitoringCount" abstract="false" name="MgpSiteContingencyMonitoringCount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="exc_BaltimoreGasAndElectricCompanyAffiliateMember" abstract="true" name="BaltimoreGasAndElectricCompanyAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ShortTermDebt03242023Member" abstract="true" name="ShortTermDebt03242023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_RelatedPartyTransactionsBSCandPHISCOServiceCompaniesTableTextBlock" abstract="false" name="RelatedPartyTransactionsBSCandPHISCOServiceCompaniesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="exc_PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsAxis" abstract="true" name="PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="exc_PotomacElectricPowerCompanyMember" abstract="true" name="PotomacElectricPowerCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_MarkToMarketDerivativeLiabilitiesMember" abstract="true" name="MarkToMarketDerivativeLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_CommonwealthEdisonCoAffiliateMember" abstract="true" name="CommonwealthEdisonCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_LongTermDebtToFinancingTrusts" abstract="false" name="LongTermDebtToFinancingTrusts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_OtherReceivablesRelatedParty" abstract="false" name="OtherReceivablesRelatedParty" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_DPLFMB557Mar2053Member" abstract="true" name="DPLFMB557Mar2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_IncreaseDecreaseInReceivablesFromPayablesToAffiliatesNet" abstract="false" name="IncreaseDecreaseInReceivablesFromPayablesToAffiliatesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_PublicUtilitiesRequestedRateIncreaseDecreaseProposedRevenueRequirementPhaseIn" abstract="false" name="PublicUtilitiesRequestedRateIncreaseDecreaseProposedRevenueRequirementPhaseIn" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_PHIServiceCompanyMember" abstract="true" name="PHIServiceCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_ChangesinAccumulatedOtherComprehensiveIncomeAbstract" abstract="true" name="ChangesinAccumulatedOtherComprehensiveIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_PepcoFMB530Mar2033Member" abstract="true" name="PepcoFMB530Mar2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxLawPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxLawPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="exc_SupplementalStatementofOperationsInformationLineItems" abstract="true" name="SupplementalStatementofOperationsInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_PHIServiceCoAffiliateMember" abstract="true" name="PHIServiceCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_DefinedBenefitPlanAmountsRecognizedInRegulatoryLiabilitiesBeforeTax" abstract="false" name="DefinedBenefitPlanAmountsRecognizedInRegulatoryLiabilitiesBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateTable" abstract="true" name="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_PecoEnergyCoMember" abstract="true" name="PecoEnergyCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="exc_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateLineItems" abstract="true" name="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_A2028Member" abstract="true" name="A2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>


5 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/27/24  Potomac Electric Power Co.        424B2                  2:548K                                   Toppan Merrill/FA
 2/26/24  Potomac Electric Power Co.        424B2                  1:544K                                   Toppan Merrill/FA
 2/23/24  Exelon Corp.                      424B2                  2:635K                                   Toppan Merrill/FA
 2/22/24  Exelon Corp.                      424B2                  1:626K                                   Toppan Merrill/FA
 2/20/24  Exelon Corp.                      POSASR      2/20/24    8:608K                                   Toppan Merrill/FA
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Filing Submission 0001109357-23-000097   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

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