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Exelon Corp., et al. – ‘10-Q’ for 3/31/23 – ‘EX-101.SCH’

On:  Wednesday, 5/3/23, at 2:39pm ET   ·   For:  3/31/23   ·   Accession #:  1109357-23-40   ·   File #s:  0-16844, 1-01072, 1-01405, 1-01839, 1-01910, 1-03559, 1-16169, 1-31403

Previous ‘10-Q’:  ‘10-Q’ on 11/3/22 for 9/30/22   ·   Next:  ‘10-Q’ on 8/2/23 for 6/30/23   ·   Latest:  ‘10-Q’ on 11/2/23 for 9/30/23   ·   11 References:   

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

 5/03/23  Exelon Corp.                      10-Q        3/31/23  131:32M
          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   9.01M 
 2: EX-31.01    Certification Filed by Calvin G. Butler, Jr. for    HTML     42K 
                Exelon Corporation                                               
 3: EX-31.02    Certification Filed by Jeanne M. Jones for Exelon   HTML     42K 
                Corporation                                                      
 4: EX-31.03    Certification Filed by Gil C. Quiniones for         HTML     42K 
                Commonwealth Edison Company                                      
 5: EX-31.04    Certification Filed by Elisabeth J. Graham for      HTML     42K 
                Commonwealth Edison Company                                      
 6: EX-31.05    Certification Filed by Michael A. Innocenzo for     HTML     42K 
                Peco Energy Company                                              
 7: EX-31.06    Certification Filed by Marissa Humphrey for Peco    HTML     42K 
                Energy Company                                                   
 8: EX-31.07    Certification Filed by Carim V. Khouzami for        HTML     42K 
                Baltimore Gas and Electric Company                               
 9: EX-31.08    Certification Filed by David M. Vahos for           HTML     42K 
                Baltimore Gas and Electric Company                               
10: EX-31.09    Certification Filed by J. Tyler Anthony for Pepco   HTML     42K 
                Holdings LLC                                                     
11: EX-31.10    Certification Filed by Phillip S. Barnett for       HTML     42K 
                Pepco Holdings LLC                                               
12: EX-31.11    Certification Filed by J. Tyler Anthony for         HTML     42K 
                Potomac Electric Power Company                                   
13: EX-31.12    Certification Filed by Phillip S. Barnett for       HTML     42K 
                Potomac Electric Power Company                                   
14: EX-31.13    Certification Filed by J. Tyler Anthony for         HTML     42K 
                Delmarva Power & Light Company                                   
15: EX-31.14    Certification Filed by Phillip S. Barnett for       HTML     42K 
                Delmarva Power & Light Company                                   
16: EX-31.15    Certification Filed by J. Tyler Anthony for         HTML     42K 
                Atlantic City Electric Company                                   
17: EX-31.16    Certification Filed by Phillip S. Barnett for       HTML     42K 
                Atlantic City Electric Company                                   
18: EX-32.01    Certification Filed by Calvin G. Butler, Jr. for    HTML     38K 
                Exelon Corporation                                               
19: EX-32.02    Certification Filed by Jeanne M. Jones for Exelon   HTML     38K 
                Corporation                                                      
20: EX-32.03    Certification Filed by Gil C. Quiniones for         HTML     38K 
                Commonwealth Edison Company                                      
21: EX-32.04    Certification Filed by Elisabeth J. Graham for      HTML     38K 
                Commonwealth Edison Company                                      
22: EX-32.05    Certification Filed by Michael A. Innocenzo for     HTML     38K 
                Peco Energy Company                                              
23: EX-32.06    Certification Filed by Marissa Humphrey for Peco    HTML     38K 
                Energy Company                                                   
24: EX-32.07    Certification Filed by Carim V. Khouzami for        HTML     38K 
                Baltimore Gas and Electric Company                               
25: EX-32.08    Certification Filed by David M. Vahos for           HTML     38K 
                Baltimore Gas and Electric Company                               
26: EX-32.09    Certification Filed by J. Tyler Anthony for Pepco   HTML     38K 
                Holdings LLC                                                     
27: EX-32.10    Certification Filed by Phillip S. Barnett for       HTML     38K 
                Pepco Holdings LLC                                               
28: EX-32.11    Certification Filed by J. Tyler Anthony for         HTML     38K 
                Potomac Electric Power Company                                   
29: EX-32.12    Certification Filed by Phillip S. Barnett for       HTML     38K 
                Potomac Electric Power Company                                   
30: EX-32.13    Certification Filed by J. Tyler Anthony for         HTML     38K 
                Delmarva Power & Light Company                                   
31: EX-32.14    Certification Filed by Phillip S. Barnett for       HTML     38K 
                Delmarva Power & Light Company                                   
32: EX-32.15    Certification Filed by J. Tyler Anthony for         HTML     38K 
                Atlantic City Electric Company                                   
33: EX-32.16    Certification Filed by Phillip S. Barnett for       HTML     38K 
                Atlantic City Electric Company                                   
39: R1          Cover Page                                          HTML    134K 
40: R2          Consolidated Statements of Operations and           HTML    274K 
                Comprehensive Income (Unaudited)                                 
41: R3          Consolidated Statements of Cash Flows (Unaudited)   HTML    254K 
42: R4          Consolidated Balance Sheets (Unaudited)             HTML    368K 
43: R5          Consolidated Statements of Changes in Shareholders  HTML    146K 
                Equity (Unaudited)                                               
44: R6          Significant Accounting Policies (All Registrants)   HTML     58K 
45: R7          Discontinued Operations (Exelon)                    HTML     77K 
46: R8          Regulatory Matters (All Registrants)                HTML    136K 
47: R9          Revenue from Contracts with Customers (All          HTML     92K 
                Registrants)                                                     
48: R10         Segment Information (All Registrants)               HTML    398K 
49: R11         Accounts Receivable (All Registrants)               HTML    166K 
50: R12         Income Taxes (All Registrants)                      HTML    127K 
51: R13         Retirement Benefits (All Registrants)               HTML     90K 
52: R14         Derivative Financial Instruments (All Registrants)  HTML    104K 
53: R15         Debt and Credit Agreements (All Registrants)        HTML    100K 
54: R16         Fair Value of Financial Assets and Liabilities      HTML    524K 
                (All Registrants)                                                
55: R17         Commitments and Contingencies (All Registrants)     HTML    230K 
56: R18         Shareholders' Equity (Exelon)                       HTML     45K 
57: R19         Changes in Accumulated Other Comprehensive Income   HTML     77K 
                (Exelon)                                                         
58: R20         Supplemental Financial Information (All             HTML    329K 
                Registrants)                                                     
59: R21         Related Party Transactions (All Registrants)        HTML    206K 
60: R22         Significant Accounting Policies (Policies)          HTML     58K 
61: R23         Discontinued Operations (Tables)                    HTML     70K 
62: R24         Regulatory Matters (Tables)                         HTML    114K 
63: R25         Revenue from Contracts with Customers (Tables)      HTML     90K 
64: R26         Segment Information (Tables)                        HTML    394K 
65: R27         Accounts Receivable (Tables)                        HTML    170K 
66: R28         Income Taxes (Tables)                               HTML    121K 
67: R29         Retirement Benefits (Tables)                        HTML     89K 
68: R30         Derivative Instruments and Hedging Activities       HTML     84K 
                (Tables)                                                         
69: R31         Debt and Credit Agreements (Tables)                 HTML     99K 
70: R32         Fair Value of Financial Assets and Liabilities      HTML    527K 
                (Tables)                                                         
71: R33         Commitments and Contingencies (Tables)              HTML    198K 
72: R34         Changes in Accumulated Other Comprehensive Income   HTML     80K 
                (Tables)                                                         
73: R35         Supplemental Financial Information (Tables)         HTML    334K 
74: R36         Related Party Transactions (Tables)                 HTML    208K 
75: R37         Discontinued Operations and Disposal Groups         HTML     46K 
                (Details)                                                        
76: R38         Discontinued Operations and Disposal Groups         HTML    101K 
                (Details) - Income Statement                                     
77: R39         Discontinued Operations and Disposal Groups         HTML    103K 
                (Details) - Balance Sheet                                        
78: R40         Discontinued Operations and Disposal Groups         HTML     70K 
                (Details) - Cash Flows                                           
79: R41         Regulatory Matters - Schedule of Completed Rate     HTML    137K 
                Cases (Details)                                                  
80: R42         Regulatory Matters - Schedule of Pending Rate       HTML    139K 
                Cases (Details)                                                  
81: R43         Regulatory Matters - Annual Electric Transmission   HTML     53K 
                Fillings (Details)                                               
82: R44         Regulatory Matters - Energy Efficiency Formula      HTML     39K 
                Rate (Details)                                                   
83: R45         Regulatory Matters - Capitalized Ratemaking Amount  HTML     56K 
                Not Recognized (Details)                                         
84: R46         Regulatory Matters - Narrative (Details)            HTML    100K 
85: R47         Revenue from Contracts with Customers - Change in   HTML     54K 
                Contract with Customer, Asset and Liability                      
                (Details)                                                        
86: R48         Revenue from Contract with Customer - Performance   HTML     95K 
                Obligations (Details)                                            
87: R49         Segment Information - Narrative (Details)           HTML     42K 
88: R50         Segment Information - Reconciliation to             HTML    233K 
                Consolidated Financial Statements (Details)                      
89: R51         Segment Information - Electric and Gas Revenue by   HTML    246K 
                Customer Class (Details)                                         
90: R52         Accounts Receivable - Allowance for Credit Losses   HTML     96K 
                Rollforward (Details)                                            
91: R53         Accounts Receivable - Unbilled Customer Revenue     HTML     55K 
                (Details)                                                        
92: R54         Accounts Receivable - Purchases and Sales of        HTML     59K 
                Accounts Receivable (Detail)                                     
93: R55         Income Taxes - Narrative (Details)                  HTML     67K 
94: R56         Income Taxes - Reconciliation to Effective Tax      HTML    106K 
                Rate (Details)                                                   
95: R57         Income Taxes - Unrecognized Tax Benefits (Details)  HTML     46K 
96: R58         Retirement Benefits - Narrative (Details)           HTML     58K 
97: R59         Retirement Benefits - Calculation of Net Periodic   HTML     65K 
                Benefit Cost (Details)                                           
98: R60         Retirement Benefits - Allocated Portion of Pension  HTML     64K 
                and Postretirement Benefit Plan Costs (Details)                  
99: R61         Retirement Benefits - Defined Contribution Savings  HTML     56K 
                Plans (Details)                                                  
100: R62         Derivative Financial Instruments - Narrative        HTML     96K  
                (Details)                                                        
101: R63         Derivative Financial Instruments - Summary of       HTML     63K  
                Interest Rate Hedge Balances (Details)                           
102: R64         Derivative Financial Instruments - Summary of       HTML     48K  
                Economic Hedges (Details)                                        
103: R65         Derivative Financial Instruments - Summary of       HTML     64K  
                Counterparty Collateral (Details)                                
104: R66         Debt and Credit Agreements - Narrative (Details)    HTML     93K  
105: R67         Debt and Credit Agreements - Commercial Paper       HTML     62K  
                Borrowings (Details)                                             
106: R68         Debt and Credit Agreements - Summary of Revolving   HTML     64K  
                Credit Agreements (Details)                                      
107: R69         Debt and Credit Agreements - Issuance of Long-Term  HTML     85K  
                Debt (Details)                                                   
108: R70         Fair Value of Financial Assets and Liabilities -    HTML    111K  
                Fair Value of Financial Liabilities Recorded at                  
                Amortized Cost (Details)                                         
109: R71         Fair Value of Financial Assets and Liabilities -    HTML    376K  
                Fair Value Measurements of Assets and Liabilities,               
                Recurring and Nonrecurring (Details)                             
110: R72         Fair Value of Financial Assets and Liabilities -    HTML     93K  
                Fair Value Assets Liabilities Measured On                        
                Recurring Basis Unobservable Input Reconciliation                
                (Details)                                                        
111: R73         Fair Value of Financial Assets and Liabilities -    HTML     59K  
                Fair Value Inputs Assets Quantitative Information                
                (Details)                                                        
112: R74         Commitments and Contingencies - Narrative           HTML     58K  
                (Details)                                                        
113: R75         Commitments and Contingencies - Merger Commitment   HTML     58K  
                (Details)                                                        
114: R76         Commitments and Contingencies - Schedule of         HTML    149K  
                Commercial Commitments (Details)                                 
115: R77         Commitments and Contingencies - Schedule of         HTML     65K  
                Accruals for Environmental Matters (Details)                     
116: R78         Shareholder's Equity (Details)                      HTML     37K  
117: R79         Changes in Accumulated Other Comprehensive Income   HTML     81K  
                - Schedule of Changes in AOCI (Details)                          
118: R80         Changes in Accumulated Other Comprehensive Income   HTML     49K  
                - Income Taxes Allocated to Other Comprehensive                  
                Income (Loss) Components (Details)                               
119: R81         Supplemental Financial Information - Operations     HTML     60K  
                (Detail)                                                         
120: R82         Supplemental Financial Information - Taxes Other    HTML     62K  
                Than Income Taxes (Details)                                      
121: R83         Supplemental Financial Information - Cash Flow      HTML    150K  
                (Details)                                                        
122: R84         Supplemental Financial Information - Balance Sheet  HTML    102K  
                (Details)                                                        
123: R85         Related Party Transactions - Utility Registrants'   HTML     60K  
                expense with Generation (Details)                                
124: R86         Related Party Transactions - BSC and PHISCO         HTML     77K  
                Service Companies (Details)                                      
125: R87         Related Party Transactions - Current Receivables    HTML    161K  
                From/Payables To Affiliates (Details)                            
126: R88         Related Party Transactions - Long Term Debt to      HTML     58K  
                Financing Trusts (Details)                                       
129: XML         IDEA XML File -- Filing Summary                      XML    215K  
127: XML         XBRL Instance -- exc-20230331_htm                    XML  12.37M  
128: EXCEL       IDEA Workbook of Financial Reports                  XLSX    341K  
35: EX-101.CAL  XBRL Calculations -- exc-20230331_cal                XML    245K 
36: EX-101.DEF  XBRL Definitions -- exc-20230331_def                 XML   2.24M 
37: EX-101.LAB  XBRL Labels -- exc-20230331_lab                      XML   3.07M 
38: EX-101.PRE  XBRL Presentations -- exc-20230331_pre               XML   2.38M 
34: EX-101.SCH  XBRL Schema -- exc-20230331                          XSD    341K 
130: JSON        XBRL Instance as JSON Data -- MetaLinks              713±  1.17M  
131: ZIP         XBRL Zipped Folder -- 0001109357-23-000040-xbrl      Zip   1.31M

‘EX-101.SCH’   —   XBRL Schema — exc-20230331

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
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<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2023 Workiva -->
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:exc="http://www.exeloncorp.com/20230331" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt-types="http://fasb.org/srt-types/2022" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.exeloncorp.com/20230331">
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<xs:annotation>
<xs:appinfo>
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<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="exc-20230331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
<link:roleType id="CoverPage" roleURI="http://www.exeloncorp.com/role/CoverPage">
<link:definition> 0000001 - Document - Cover Page </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="ConsolidatedStatementsofOperationsandComprehensiveIncomeUnaudited" roleURI="http://www.exeloncorp.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncomeUnaudited">
<link:definition> 0000002 - Statement - Consolidated Statements of Operations and Comprehensive Income (Unaudited) </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="ConsolidatedStatementsofCashFlowsUnaudited" roleURI="http://www.exeloncorp.com/role/ConsolidatedStatementsofCashFlowsUnaudited">
<link:definition> 0000003 - Statement - Consolidated Statements of Cash Flows (Unaudited) </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="ConsolidatedBalanceSheetsUnaudited" roleURI="http://www.exeloncorp.com/role/ConsolidatedBalanceSheetsUnaudited">
<link:definition> 0000004 - Statement - Consolidated Balance Sheets (Unaudited) </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="ConsolidatedStatementsofChangesinShareholdersEquityUnaudited" roleURI="http://www.exeloncorp.com/role/ConsolidatedStatementsofChangesinShareholdersEquityUnaudited">
<link:definition> 0000005 - Statement - Consolidated Statements of Changes in Shareholders Equity (Unaudited) </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="SignificantAccountingPoliciesAllRegistrants" roleURI="http://www.exeloncorp.com/role/SignificantAccountingPoliciesAllRegistrants">
<link:definition> 0000006 - Disclosure - Significant Accounting Policies (All Registrants) </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="DiscontinuedOperationsExelon" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsExelon">
<link:definition> 0000007 - Disclosure - Discontinued Operations (Exelon) </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="RegulatoryMattersAllRegistrants" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersAllRegistrants">
<link:definition> 0000008 - Disclosure - Regulatory Matters (All Registrants) </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="RevenuefromContractswithCustomersAllRegistrants" roleURI="http://www.exeloncorp.com/role/RevenuefromContractswithCustomersAllRegistrants">
<link:definition> 0000009 - Disclosure - Revenue from Contracts with Customers (All Registrants) </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="SegmentInformationAllRegistrants" roleURI="http://www.exeloncorp.com/role/SegmentInformationAllRegistrants">
<link:definition> 0000010 - Disclosure - Segment Information (All Registrants) </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="AccountsReceivableAllRegistrants" roleURI="http://www.exeloncorp.com/role/AccountsReceivableAllRegistrants">
<link:definition> 0000011 - Disclosure - Accounts Receivable (All Registrants) </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="AssetImpairmentsExelonandBGE" roleURI="http://www.exeloncorp.com/role/AssetImpairmentsExelonandBGE">
<link:definition> 0000012 - Disclosure - Asset Impairments (Exelon and BGE) </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="IncomeTaxesAllRegistrants" roleURI="http://www.exeloncorp.com/role/IncomeTaxesAllRegistrants">
<link:definition> 0000013 - Disclosure - Income Taxes (All Registrants) </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="RetirementBenefitsAllRegistrants" roleURI="http://www.exeloncorp.com/role/RetirementBenefitsAllRegistrants">
<link:definition> 0000014 - Disclosure - Retirement Benefits (All Registrants) </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="DerivativeFinancialInstrumentsAllRegistrants" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsAllRegistrants">
<link:definition> 0000015 - Disclosure - Derivative Financial Instruments (All Registrants) </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="DebtandCreditAgreementsAllRegistrants" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsAllRegistrants">
<link:definition> 0000016 - Disclosure - Debt and Credit Agreements (All Registrants) </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="FairValueofFinancialAssetsandLiabilitiesAllRegistrants" roleURI="http://www.exeloncorp.com/role/FairValueofFinancialAssetsandLiabilitiesAllRegistrants">
<link:definition> 0000017 - Disclosure - Fair Value of Financial Assets and Liabilities (All Registrants) </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="CommitmentsandContingenciesAllRegistrants" roleURI="http://www.exeloncorp.com/role/CommitmentsandContingenciesAllRegistrants">
<link:definition> 0000018 - Disclosure - Commitments and Contingencies (All Registrants) </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="ShareholdersEquityExelon" roleURI="http://www.exeloncorp.com/role/ShareholdersEquityExelon">
<link:definition> 0000019 - Disclosure - Shareholders' Equity (Exelon) </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="ChangesinAccumulatedOtherComprehensiveIncomeExelon" roleURI="http://www.exeloncorp.com/role/ChangesinAccumulatedOtherComprehensiveIncomeExelon">
<link:definition> 0000020 - Disclosure - Changes in Accumulated Other Comprehensive Income (Exelon) </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="SupplementalFinancialInformationAllRegistrants" roleURI="http://www.exeloncorp.com/role/SupplementalFinancialInformationAllRegistrants">
<link:definition> 0000021 - Disclosure - Supplemental Financial Information (All Registrants) </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="RelatedPartyTransactionsAllRegistrants" roleURI="http://www.exeloncorp.com/role/RelatedPartyTransactionsAllRegistrants">
<link:definition> 0000022 - Disclosure - Related Party Transactions (All Registrants) </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="SubsequentEventsExelonPHIPepcoDPLandACE" roleURI="http://www.exeloncorp.com/role/SubsequentEventsExelonPHIPepcoDPLandACE">
<link:definition> 0000023 - Disclosure - Subsequent Events (Exelon, PHI, Pepco, DPL, and ACE) </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="SignificantAccountingPoliciesPolicies" roleURI="http://www.exeloncorp.com/role/SignificantAccountingPoliciesPolicies">
<link:definition> 0000024 - Disclosure - Significant Accounting Policies (Policies) </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="DiscontinuedOperationsTables" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsTables">
<link:definition> 0000025 - Disclosure - Discontinued Operations (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="RegulatoryMattersTables" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersTables">
<link:definition> 0000026 - Disclosure - Regulatory Matters (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="RevenuefromContractswithCustomersTables" roleURI="http://www.exeloncorp.com/role/RevenuefromContractswithCustomersTables">
<link:definition> 0000027 - 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> 0000028 - 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> 0000029 - 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> 0000030 - 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> 0000031 - 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> 0000032 - 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> 0000033 - 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="DebtandCreditAgreementsTables" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsTables">
<link:definition> 0000034 - Disclosure - Debt and Credit Agreements (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> 0000035 - 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> 0000036 - 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> 0000037 - 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> 0000038 - 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> 0000039 - 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="SignificantAccountingPoliciesDetails" roleURI="http://www.exeloncorp.com/role/SignificantAccountingPoliciesDetails">
<link:definition> 0000040 - Disclosure - Significant Accounting Policies (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="DiscontinuedOperationsandDisposalGroupsDetails" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsandDisposalGroupsDetails">
<link:definition> 0000041 - Disclosure - Discontinued Operations and Disposal Groups (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="DiscontinuedOperationsandDisposalGroupsDetailsIncomeStatement" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsandDisposalGroupsDetailsIncomeStatement">
<link:definition> 0000042 - 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="DiscontinuedOperationsandDisposalGroupsDetailsBalanceSheet" roleURI="http://www.exeloncorp.com/role/DiscontinuedOperationsandDisposalGroupsDetailsBalanceSheet">
<link:definition> 0000043 - Disclosure - Discontinued Operations and Disposal Groups (Details) - Balance Sheet </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> 0000044 - 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="RegulatoryMattersScheduleofCompletedRateCasesDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersScheduleofCompletedRateCasesDetails">
<link:definition> 0000045 - 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> 0000046 - 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> 0000047 - 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> 0000048 - 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> 0000049 - 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="RegulatoryMattersNarrativeDetails" roleURI="http://www.exeloncorp.com/role/RegulatoryMattersNarrativeDetails">
<link:definition> 0000050 - 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="RevenuefromContractswithCustomersChangeinContractwithCustomerAssetandLiabilityDetails" roleURI="http://www.exeloncorp.com/role/RevenuefromContractswithCustomersChangeinContractwithCustomerAssetandLiabilityDetails">
<link:definition> 0000051 - 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> 0000052 - 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> 0000052 - 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> 0000053 - 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> 0000054 - 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> 0000055 - 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> 0000056 - 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> 0000057 - 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> 0000058 - 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> 0000059 - 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> 0000060 - 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> 0000061 - 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> 0000062 - 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> 0000063 - 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> 0000064 - 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> 0000065 - 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> 0000066 - 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> 0000067 - 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> 0000068 - 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> 0000069 - 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="DerivativeFinancialInstrumentsSummaryofEconomicHedgesDetails" roleURI="http://www.exeloncorp.com/role/DerivativeFinancialInstrumentsSummaryofEconomicHedgesDetails">
<link:definition> 0000070 - 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> 0000071 - 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="DebtandCreditAgreementsNarrativeDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsNarrativeDetails">
<link:definition> 0000072 - Disclosure - Debt and Credit Agreements - 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="DebtandCreditAgreementsCommercialPaperBorrowingsDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsCommercialPaperBorrowingsDetails">
<link:definition> 0000073 - Disclosure - Debt and Credit Agreements - 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="DebtandCreditAgreementsSummaryofRevolvingCreditAgreementsDetails" roleURI="http://www.exeloncorp.com/role/DebtandCreditAgreementsSummaryofRevolvingCreditAgreementsDetails">
<link:definition> 0000074 - Disclosure - Debt and Credit Agreements - 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>
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<xs:element id="exc_DistrictofColumbia2019ElectricDistributionBaseRateCaseMember" abstract="true" name="DistrictofColumbia2019ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_OtherAffiliateMember" abstract="true" name="OtherAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueInputsForwardHeatRate" abstract="false" name="FairValueInputsForwardHeatRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_InvestmentsInEquityMember" abstract="true" name="InvestmentsInEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PurchasesOfAccountsReceivableTableTextBlock" abstract="false" name="PurchasesOfAccountsReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_A2023TransmissionFormulaRateAnnualUpdateDomain" abstract="true" name="A2023TransmissionFormulaRateAnnualUpdateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RegulatoryMattersAdditionalNarrativeInformationLineItems" abstract="true" name="RegulatoryMattersAdditionalNarrativeInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_OtherComprehensiveIncomeUnrealizedIncomeLossOnEquityInvestmentsArisingDuringPeriodNetOfTax" abstract="false" name="OtherComprehensiveIncomeUnrealizedIncomeLossOnEquityInvestmentsArisingDuringPeriodNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_EnergyEfficiencyCostsMember" abstract="true" name="EnergyEfficiencyCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_BusinessServicesCompanyMember" abstract="true" name="BusinessServicesCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueInputsRenewableFactor" abstract="false" name="FairValueInputsRenewableFactor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossChangeInCollateral" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossChangeInCollateral" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_MarkToMarketDerivativeLiabilitiesMember" abstract="true" name="MarkToMarketDerivativeLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ContractTypeDomain" abstract="true" name="ContractTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RegulatoryMattersPendingRateCasesTable" abstract="true" name="RegulatoryMattersPendingRateCasesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_NewJersey2020ElectricDistributionBaseRateCaseMember" abstract="true" name="NewJersey2020ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_EstimatedPercentOfGasPurchasesBeingHedged" abstract="false" name="EstimatedPercentOfGasPurchasesBeingHedged" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_EconomicHedgesMember" abstract="true" name="EconomicHedgesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateTable" abstract="true" name="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateTable" 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_BeneficialElectrificationPlannedExpenditure" abstract="false" name="BeneficialElectrificationPlannedExpenditure" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_A2023Member" abstract="true" name="A2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_AtlanticCityElectricCoAffiliateMember" abstract="true" name="AtlanticCityElectricCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_A2026Member" abstract="true" name="A2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_IllinoisChamberOfCommerceMember" abstract="true" name="IllinoisChamberOfCommerceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RelatedPartyTransactionsLongTermDebttoFinancingTrustsTableTextBlock" abstract="false" name="RelatedPartyTransactionsLongTermDebttoFinancingTrustsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_RenewableEnergyCreditsCurrent" abstract="false" name="RenewableEnergyCreditsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ChangeinReceivablesFromPayablesToAffiliatesNet" abstract="false" name="ChangeinReceivablesFromPayablesToAffiliatesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_BeneficialElectrificationPlannedExpenditureAnnual" abstract="false" name="BeneficialElectrificationPlannedExpenditureAnnual" nillable="true" xbrli:periodType="duration" 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-types:domainItemType"/>
<xs:element id="exc_MiddlemarketlendingMember" abstract="true" name="MiddlemarketlendingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_GenerationTotalConsolidatedGroupMember" abstract="true" name="GenerationTotalConsolidatedGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RemainingCommitmentMember" abstract="true" name="RemainingCommitmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PublicUtilitiesTransmissionRateFilingsTableTextBlock" abstract="false" name="PublicUtilitiesTransmissionRateFilingsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_PecoEnergyCoMember" abstract="true" name="PecoEnergyCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_TransportationMember" abstract="true" name="TransportationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ChangesInOptionPremiumsCollectedReceived" abstract="false" name="ChangesInOptionPremiumsCollectedReceived" 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-types:textBlockItemType"/>
<xs:element id="exc_A2021Member" abstract="true" name="A2021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetsBeforeTax" abstract="false" name="DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetsBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_PecoTrustThreeAffiliateMember" abstract="true" name="PecoTrustThreeAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_MembershipInterestMember" abstract="true" name="MembershipInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_OtherFixedIncomeMember" abstract="true" name="OtherFixedIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_LargeCommercialIndustrialMember" abstract="true" name="LargeCommercialIndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_A2022TransmissionFormulaRateRevenueReductionMember" abstract="true" name="A2022TransmissionFormulaRateRevenueReductionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PHIServiceCoAffiliateMember" abstract="true" name="PHIServiceCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_AgreementCashProceeds" abstract="false" name="AgreementCashProceeds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ACEFMB557Mar2053Member" abstract="true" name="ACEFMB557Mar2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_BaltimoreGasAndElectricCompanyMember" abstract="true" name="BaltimoreGasAndElectricCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<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_AlternativeRevenueProgramsMember" abstract="true" name="AlternativeRevenueProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_Pennsylvania2022NaturalGasDistributionBaseRateCaseMember" abstract="true" name="Pennsylvania2022NaturalGasDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RestrictedcashMember" abstract="true" name="RestrictedcashMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_OtherLegalEntitiesMember" abstract="true" name="OtherLegalEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossAbstract" abstract="true" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ProprietaryTradingMember" abstract="true" name="ProprietaryTradingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RegulatoryMattersCompletedRateCasesTable" abstract="true" name="RegulatoryMattersCompletedRateCasesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_DelmarvaPowerandLightCompanyAffiliateMember" abstract="true" name="DelmarvaPowerandLightCompanyAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PublicUtilitiesApprovedRateIncreaseDecreaseTaxBenefitsAxis" abstract="true" name="PublicUtilitiesApprovedRateIncreaseDecreaseTaxBenefitsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="exc_PublicUtilitiesEnergyEfficiencyRevenueTableTextBlock" abstract="false" name="PublicUtilitiesEnergyEfficiencyRevenueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_RenewablePortfolioStandardsCostsMember" abstract="true" name="RenewablePortfolioStandardsCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_SupplementalBalanceSheetInformationLineItems" abstract="true" name="SupplementalBalanceSheetInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ComEdFMB490Feb2033Member" abstract="true" name="ComEdFMB490Feb2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PublicUtilitiesDistributionRateCasesTableTextBlock" abstract="false" name="PublicUtilitiesDistributionRateCasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_MgpSiteContingencyCount" abstract="false" name="MgpSiteContingencyCount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="exc_ShortTermDebtSOFRplus075Oct2023Member" abstract="true" name="ShortTermDebtSOFRplus075Oct2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_InterestRateCap18monthMember" abstract="true" name="InterestRateCap18monthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_Illinois2021ElectricDistributionBaseRateCaseMember" abstract="true" name="Illinois2021ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_DiscontinuedOperationsBalanceSheetTableTextBlock" abstract="false" name="DiscontinuedOperationsBalanceSheetTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisFinancialStatementCaptionsLineItems" abstract="true" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisFinancialStatementCaptionsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_OffsetsMember" abstract="true" name="OffsetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_UnderRecoveredRevenueDecouplingMember" abstract="true" name="UnderRecoveredRevenueDecouplingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FederalAndState" abstract="false" name="FederalAndState" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<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_DPLFMB545Nov2033Member" abstract="true" name="DPLFMB545Nov2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_AdjustmentsToReconcileFederalStatutoryIncomeTaxRateToEffectiveIncomeTaxRateContinuingOperationsAbstract" abstract="true" name="AdjustmentsToReconcileFederalStatutoryIncomeTaxRateToEffectiveIncomeTaxRateContinuingOperationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ExelonGenerationCoLLCMember" abstract="true" name="ExelonGenerationCoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_DiscontinuedOperationsCashFlowsTableTextBlock" abstract="false" name="DiscontinuedOperationsCashFlowsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_PenaltyAxis" abstract="true" name="PenaltyAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="exc_AllocationOfTaxBenefitsTable" abstract="true" name="AllocationOfTaxBenefitsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_RelatedPartyTransactionsBSCandPHISCOServiceCompaniesTableTextBlock" abstract="false" name="RelatedPartyTransactionsBSCandPHISCOServiceCompaniesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_DeferredTaxLiabilityAdjustmentNoncontrollingInterest" abstract="false" name="DeferredTaxLiabilityAdjustmentNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_InterestRateCapNotional6monthMember" abstract="true" name="InterestRateCapNotional6monthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PublicUtilitiesRequestedRateIncreaseDecreaseInitialRevenueRequirementAmount" abstract="false" name="PublicUtilitiesRequestedRateIncreaseDecreaseInitialRevenueRequirementAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_CaponEquityComponentofRateofReturnonCommonEquityinFederalEnergyRegulatoryCommitteeComplaint" abstract="false" name="CaponEquityComponentofRateofReturnonCommonEquityinFederalEnergyRegulatoryCommitteeComplaint" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_EnergyEfficiencyAndDemandResponseProgramsMember" abstract="true" name="EnergyEfficiencyAndDemandResponseProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_BookOverdrafts" abstract="false" name="BookOverdrafts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<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_BaltimoreGasAndElectricCompanyAffiliateMember" abstract="true" name="BaltimoreGasAndElectricCompanyAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_AgreementLiabilitiesRecorded" abstract="false" name="AgreementLiabilitiesRecorded" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_InvestmentsInEquityAxis" abstract="true" name="InvestmentsInEquityAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="exc_DelawareDE2022ElectricDistributionBaseRateCaseMember" abstract="true" name="DelawareDE2022ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_EconomicHedgingInstrumentLiabilitesMember" abstract="true" name="EconomicHedgingInstrumentLiabilitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisTable" abstract="true" name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_SupplementalCashFlowInformationTable" abstract="true" name="SupplementalCashFlowInformationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_PepcoFMB557Mar2053Member" abstract="true" name="PepcoFMB557Mar2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_InterestRateSwapTerminatedMember" abstract="true" name="InterestRateSwapTerminatedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<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_FirstMortgageBondsMember" abstract="true" name="FirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_A2025Member" abstract="true" name="A2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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-types:domainItemType"/>
<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_MarketingAgreementInterest" abstract="false" name="MarketingAgreementInterest" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_Notes560Mar2053Member" abstract="true" name="Notes560Mar2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_SupplementalCashFlowInformationLineItems" abstract="true" name="SupplementalCashFlowInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ShortTermDebt03242023Member" abstract="true" name="ShortTermDebt03242023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_EffectsofNettingandAllocationofCollateralMember" abstract="true" name="EffectsofNettingandAllocationofCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_SmallCommercialIndustrialMember" abstract="true" name="SmallCommercialIndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_MgpSiteContingencyMonitoringCount" abstract="false" name="MgpSiteContingencyMonitoringCount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="exc_ChangeinCapitalExpendituresIncurredButNotYetPaid" abstract="false" name="ChangeinCapitalExpendituresIncurredButNotYetPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_AccrualForMgpInvestigationAndRemediationMember" abstract="true" name="AccrualForMgpInvestigationAndRemediationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_DPLFMB530Mar2033Member" abstract="true" name="DPLFMB530Mar2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsAxis" abstract="true" name="PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<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_ExelonBusinessServicesCoAffiliateMember" abstract="true" name="ExelonBusinessServicesCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_A2022Member" abstract="true" name="A2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ConstantMaturityTreasuryInterestRateSwapsMember" abstract="true" name="ConstantMaturityTreasuryInterestRateSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ComEd2022EnergyEfficiencyFormulaRateDomain" abstract="true" name="ComEd2022EnergyEfficiencyFormulaRateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PerformanceMetricsPenaltyMember" abstract="true" name="PerformanceMetricsPenaltyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ComedFinancingThreeAffiliateMember" abstract="true" name="ComedFinancingThreeAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ScheduleOfOtherComprehensiveIncomeLossTaxTableTextBlock" abstract="false" name="ScheduleOfOtherComprehensiveIncomeLossTaxTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_DeferredProsecutionAgreementLiabilityCurrent" abstract="false" name="DeferredProsecutionAgreementLiabilityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_CommonwealthEdisonCoAffiliateMember" abstract="true" name="CommonwealthEdisonCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_TotalTransactionCostsTaxesRelatingToTheSeparation" abstract="false" name="TotalTransactionCostsTaxesRelatingToTheSeparation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_DCPLUGChargeMember" abstract="true" name="DCPLUGChargeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_OptionModelValuationTechniqueMember" abstract="true" name="OptionModelValuationTechniqueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_CommodityDerivativeLiabilitesMember" abstract="true" name="CommodityDerivativeLiabilitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_RabbiTrustInvestmentsMember" abstract="true" name="RabbiTrustInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_ElectricDistributionFormulaRateAnnualReconciliationsMember" abstract="true" name="ElectricDistributionFormulaRateAnnualReconciliationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_A2023TransmissionFormulaRateRevenueReductionMember" abstract="true" name="A2023TransmissionFormulaRateRevenueReductionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PotomacElectricPowerCoAffiliateMember" abstract="true" name="PotomacElectricPowerCoAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ElectricTransmissionFormulaRateAnnualReconciliationsMember" abstract="true" name="ElectricTransmissionFormulaRateAnnualReconciliationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_UndividedInterestSold" abstract="false" name="UndividedInterestSold" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_ChangesinAccumulatedOtherComprehensiveIncomeAbstract" abstract="true" name="ChangesinAccumulatedOtherComprehensiveIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ResidentialMember" abstract="true" name="ResidentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_InterestRateDerivativeAssetsMember" abstract="true" name="InterestRateDerivativeAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PepcoHoldingsLLCAffiliateMember" abstract="true" name="PepcoHoldingsLLCAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueInputsForwardGasPriceAssets" abstract="false" name="FairValueInputsForwardGasPriceAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
<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_AmortizationofPriorServiceCostBenefitandActuarialLossAbstract" abstract="true" name="AmortizationofPriorServiceCostBenefitandActuarialLossAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxLawPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxLawPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_DiscontinuedOperationsIncomeStatementTableTextBlock" abstract="false" name="DiscontinuedOperationsIncomeStatementTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_Illinois2023ElectricDistributionBaseRateCaseMember" abstract="true" name="Illinois2023ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PNCTermLoanJuly2023Member" abstract="true" name="PNCTermLoanJuly2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_CashCollateralHeldWithExternalCounterpartiesTableTextBlock" abstract="false" name="CashCollateralHeldWithExternalCounterpartiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_EffectsofNettingandAllocationofCollateralLiabilitesMember" abstract="true" name="EffectsofNettingandAllocationofCollateralLiabilitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FMB535Sept2033Member" abstract="true" name="FMB535Sept2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_AtlanticCityElectricCompanyMember" abstract="true" name="AtlanticCityElectricCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<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_FairValueInputsForwardPowerPriceAssets" abstract="false" name="FairValueInputsForwardPowerPriceAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
<xs:element id="exc_ExelonGenerationCoLlcAffiliateMember" abstract="true" name="ExelonGenerationCoLlcAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PotomacElectricPowerCompanyMember" abstract="true" name="PotomacElectricPowerCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ContractLiabilitiesMember" abstract="true" name="ContractLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PeriodDomain" abstract="true" name="PeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_CarbonMitigationCreditRiderMember" abstract="true" name="CarbonMitigationCreditRiderMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_EconomichedgeInterestandCurrencyMember" abstract="true" name="EconomichedgeInterestandCurrencyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_A2022TransmissionFormulaRateAnnualUpdateDomain" abstract="true" name="A2022TransmissionFormulaRateAnnualUpdateDomain" 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-types:domainItemType"/>
<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_IncomeTaxAdditionalNarrativeInformationLineItems" abstract="true" name="IncomeTaxAdditionalNarrativeInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ElectricEnergyAndNaturalGasCostsMember" abstract="true" name="ElectricEnergyAndNaturalGasCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_YearToDateMember" abstract="true" name="YearToDateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_DPLFMB572Nov2053Member" abstract="true" name="DPLFMB572Nov2053Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIncludedInNoncurrentPayablesToAffiliates" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIncludedInNoncurrentPayablesToAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ContractTypeAxis" abstract="true" name="ContractTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="exc_ElectricEnergyCostsMember" abstract="true" name="ElectricEnergyCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_PEPCOHoldingsIncMember" abstract="true" name="PEPCOHoldingsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsDomain" abstract="true" name="PublicUtilitiesApprovedRateIncreaseDecreaseOffsetsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_CashCollateralPosted" abstract="false" name="CashCollateralPosted" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_OverRecoveredRevenueDecouplingMember" abstract="true" name="OverRecoveredRevenueDecouplingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_SupplementalFinancialInformationAbstract" abstract="true" name="SupplementalFinancialInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<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_RegulatoryMattersPendingRateCasesLineItems" abstract="true" name="RegulatoryMattersPendingRateCasesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_TrueupAdjustmentstoDecouplingMechanismsandFormulaRates" abstract="false" name="TrueupAdjustmentstoDecouplingMechanismsandFormulaRates" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_AccumulatedOtherComprehensiveIncomeLossTextBlock" abstract="false" name="AccumulatedOtherComprehensiveIncomeLossTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_FMB490Feb2033Member" abstract="true" name="FMB490Feb2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_InvestmentsInEquityDomain" abstract="true" name="InvestmentsInEquityDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_PecoTrustFourAffiliateMember" abstract="true" name="PecoTrustFourAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="exc_SupplementalStatementofOperationsInformationTable" abstract="true" name="SupplementalStatementofOperationsInformationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_DelmarvaPowerandLightCompanyMember" abstract="true" name="DelmarvaPowerandLightCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_OtherReceivablesMember" abstract="true" name="OtherReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_EquitySecuritiesNuclearDecommissioningTrustFundMember" abstract="true" name="EquitySecuritiesNuclearDecommissioningTrustFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossIncludedInNuclearDecommissioningPayable" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossIncludedInNuclearDecommissioningPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_DerivativesDesignatedAsHedgingInstrumentsLiabilitiesMember" abstract="true" name="DerivativesDesignatedAsHedgingInstrumentsLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ContractWithCustomersLineItems" abstract="true" name="ContractWithCustomersLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_SMBCTermLoanJuly2023Member" abstract="true" name="SMBCTermLoanJuly2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_InterestRateSwapNotional5YRMember" abstract="true" name="InterestRateSwapNotional5YRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_Maryland2023ElectricDistributionBaseRateCaseMember" abstract="true" name="Maryland2023ElectricDistributionBaseRateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_BasisPointsForTransmissionFormulaRate" abstract="false" name="BasisPointsForTransmissionFormulaRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
<xs:element id="exc_MovementinAccumulatedOtherComprehensiveIncomeRollForward" abstract="true" name="MovementinAccumulatedOtherComprehensiveIncomeRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_CashEquivalentsNDTMember" abstract="true" name="CashEquivalentsNDTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_MembersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" abstract="true" name="MembersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_CommitmentsAndContingenciesAdditionalNarrativeInformationLineItems" abstract="true" name="CommitmentsAndContingenciesAdditionalNarrativeInformationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_ShortTermDebt03142023Member" abstract="true" name="ShortTermDebt03142023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_CommonwealthEdisonCoMember" abstract="true" name="CommonwealthEdisonCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_DisposalGroupIncludingDiscontinuedOperationsAssetsCurrentLiabilitiesHeldForSale" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationsAssetsCurrentLiabilitiesHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="exc_ElectricOperatingRevenuesMember" abstract="true" name="ElectricOperatingRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_Notes515Mar2028Member" abstract="true" name="Notes515Mar2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_AtlanticCityElectricCompanyAffiliateMember" abstract="true" name="AtlanticCityElectricCompanyAffiliateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ProprietaryTradingLiabilitiesMember" abstract="true" name="ProprietaryTradingLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_ExternalCounterpartiesMember" abstract="true" name="ExternalCounterpartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="exc_SupplementalBalanceSheetInformationTable" abstract="true" name="SupplementalBalanceSheetInformationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="exc_MaximumIncreaseOfRevenueRequirement" abstract="false" name="MaximumIncreaseOfRevenueRequirement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="exc_RelatedPartyTransactionsCurrentReceivablesFromPayablesToAffiliatesTableTextBlock" abstract="false" name="RelatedPartyTransactionsCurrentReceivablesFromPayablesToAffiliatesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_ScheduleOfEnergyEfficiencyFormulaRateUpdatesLineItems" abstract="true" name="ScheduleOfEnergyEfficiencyFormulaRateUpdatesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="exc_AllocationOfTaxBenefitsTableTextBlock" abstract="false" name="AllocationOfTaxBenefitsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
</xs:schema>

9 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
 6/16/23  PECO Energy Co.                   424B5                  2:564K                                   Toppan Merrill/FA
 6/15/23  PECO Energy Co.                   424B5                  1:532K                                   Toppan Merrill/FA
 5/09/23  Baltimore Gas & Electric Co.      424B5                  2:516K                                   Toppan Merrill/FA
 5/08/23  Baltimore Gas & Electric Co.      424B2                  1:499K                                   Toppan Merrill/FA

2 Previous Filings that this Filing References

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

 3/15/23  Potomac Electric Power Co.        8-K:1,2,9   3/15/23   17:85M
 2/21/23  Exelon Corp.                      8-K:1,2,9   2/21/23   15:16M
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Filing Submission 0001109357-23-000040   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
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