- Page 1 and 2: UNITED STATES SECURITIES AND EXCHAN
- Page 3 and 4: Exelon Generation Company, LLC and
- Page 5 and 6: Page No. ITEM 7A. QUANTITATIVE AND
- Page 7 and 8: GLOSSARY OF TERMS AND ABBREVIATIONS
- Page 9 and 10: Other Terms and Abbreviations LTIP
- Page 11: FILING FORMAT This combined Annual
- Page 15 and 16: following the merger completion. In
- Page 17 and 18: egulations by the NRC may require a
- Page 19 and 20: of new merchant nuclear power plant
- Page 21 and 22: y third parties. In 2012 and 2011,
- Page 23 and 24: the type of underlying asset. Gener
- Page 25 and 26: ComEd ComEd is engaged principally
- Page 27 and 28: due to weather events or conditions
- Page 29 and 30: Smart Meter, Smart Grid and Energy
- Page 31 and 32: BGE’s highest peak load occurred
- Page 33 and 34: • a liquefied natural gas facilit
- Page 35 and 36: Environmental Regulation General Ex
- Page 37 and 38: attributable to low level radioacti
- Page 39 and 40: hydro and pumped storage, and suppl
- Page 41 and 42: Name Age Position Period Pramaggior
- Page 43 and 44: Name Age Position Period O’Neill,
- Page 45 and 46: ITEM 1A. RISK FACTORS Each of the R
- Page 47 and 48: under their obligations for operati
- Page 49 and 50: ComEd’s financial swap contract w
- Page 51 and 52: 1999 sale of fossil generating asse
- Page 53 and 54: lived assets for potential impairme
- Page 55 and 56: were weather and the economy. With
- Page 57 and 58: Generation’s affiliation with Com
- Page 59 and 60: Federal and state legislation manda
- Page 61 and 62: Generation may be negatively affect
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the Registrants face a risk that th
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of funds necessary for decommission
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with most companies in today’s en
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ITEM 2. PROPERTIES Generation The f
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Primary Net Station Region Location
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Transmission and Distribution PECO
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(Dollars in millions except per sha
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PECO As of January 31, 2013, there
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ITEM 6. SELECTED FINANCIAL DATA Exe
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December 31, (In millions) 2012 201
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Item 7. MANAGEMENT’S DISCUSSION A
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purchased power and fuel expense in
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units and compensation for operatin
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(2) the rate of expansion of subsid
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Hedging Strategy Exelon’s policy
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number of factors, including RTO re
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On December 16, 2011, the U.S. EPA
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In April 2011, the NRC named six se
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FERC Ameren Order. In July 2012, FE
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decommissioning. Probabilities assi
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guidance, which became effective Ja
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Impairment may occur when the carry
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changes or experience different fro
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Sensitivity to Changes in Key Assum
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The Registrants account for derivat
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Interest Rate Derivative Instrument
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upon actual costs incurred and inve
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Net Income Year Ended December 31,
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Generation’s supply sources by re
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decreased realized margins in 2011
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Year Ended December 31, 2011 Compar
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ecorded in 2012, a $36 million barg
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Electric revenues and purchased pow
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Volume—delivery Revenues net of p
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Operating and Maintenance Expense Y
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Other, Net The changes in other, ne
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Operating Revenues Net of Purchased
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The changes in PECO’s operating r
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The changes in operating and mainte
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year ended December 31, 2011 includ
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Results of Operations—BGE 2012 20
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Volume. Heating and cooling degree
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Other Other revenues increased duri
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BGE Electric Operating Statistics a
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The Registrants primarily use their
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Cash flows provided by operations f
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(e) The projected capital expenditu
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Company Issuances of long-term debt
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From time to time and as market con
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Other Credit Matters Capital Struct
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Contractual Obligations The followi
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ComEd Total 2013 Payment due within
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• variable interest entities, see
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ComEd The financial swap contract b
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Generation ComEd PECO Intercompany
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Credit Risk, Collateral, and Contin
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PECO’s supplier master agreements
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PECO As of December 31, 2012, PECO
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ITEM 7. MANAGEMENT’S DISCUSSION A
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ITEM 7. MANAGEMENT’S DISCUSSION A
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ITEM 7. MANAGEMENT’S DISCUSSION A
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ITEM 7. MANAGEMENT’S DISCUSSION A
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ITEM 8. FINANCIAL STATEMENTS AND SU
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Management’s Report on Internal C
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Management’s Report on Internal C
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Report of Independent Registered Pu
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Report of Independent Registered Pu
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Exelon Corporation and Subsidiary C
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Exelon Corporation and Subsidiary C
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Exelon Corporation and Subsidiary C
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Exelon Generation Company, LLC and
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Exelon Generation Company, LLC and
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Commonwealth Edison Company and Sub
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Commonwealth Edison Company and Sub
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(In millions) Commonwealth Edison C
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PECO Energy Company and Subsidiary
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PECO Energy Company and Subsidiary
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BALTIMORE GAS AND ELECTRIC COMPANY
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BALTIMORE GAS AND ELECTRIC COMPANY
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(In millions) BALTIMORE GAS AND ELE
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Formula Rate Tariff Combined Notes
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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4. Merger and Acquisitions Combined
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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For the Year Ended December 31, 201
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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For the Year Ended December 31, 201
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Combined Notes to Consolidated Fina
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BGE Combined Notes to Consolidated
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Year Ended December 31, 2011 (As Re
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Generation Combined Notes to Consol
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Other Tax Matters Combined Notes to
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Components of AOCI and Regulatory A
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Combined Notes to Consolidated Fina
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Contributions Combined Notes to Con
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Eddystone Station and Cromby Statio
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Other Purchase Obligations Combined
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Solid and Hazardous Waste Combined
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Accumulated Other Comprehensive Inc
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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Combined Notes to Consolidated Fina
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ITEM 9. CHANGES IN AND DISAGREEMENT
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PART III Exelon Generation Company,
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ITEM 12. SECURITY OWNERSHIP OF CERT
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ITEM 14. PRINCIPAL ACCOUNTING FEES
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Exelon Corporation and Subsidiary C
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Exelon Corporation and Subsidiary C
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1. Basis of Presentation Exelon Cor
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5. Related Party Transactions Exelo
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Exelon Corporation and Subsidiary C
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Exelon Generation Company, LLC and
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Commonwealth Edison Company and Sub
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PECO Energy Company and Subsidiary
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Baltimore Gas and Electric Company
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Exhibit No. Description 2-13 Contri
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Exhibit No. Description 4-2 Exelon
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Exhibit No. Description 4-5 4-6 Ind
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Exhibit No. Description 4-31 Series
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Exhibit No. Description 10-31 Amend
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Exhibit No. Description 10-57 Admin
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Exhibit No. Description 24-29 Chari
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SIGNATURES Pursuant to the requirem
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SIGNATURES Pursuant to the requirem
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SIGNATURES Pursuant to the requirem
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Exelon Generation Company, LLC Rati
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PECO Energy Company Ratio of Earnin
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Exelon Corporation Subsidiary Listi
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CLT Energy Services Group, L.L.C. P
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Exelon AOG Holding #1, Inc. Delawar
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Michigan Wind 1, LLC Delaware Michi
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Exelon Generation Company, LLC Subs
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Cogenex Corporation MA CoLa Resourc
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Exelon New Boston, LLC DE Exelon Ne
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Residential Solar Holding, LLC DE R
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PECO Energy Company Subsidiary List
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CONSENT OF INDEPENDENT REGISTERED P
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CONSENT OF INDEPENDENT REGISTERED P
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CONSENT OF INDEPENDENT REGISTERED P
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POWER OF ATTORNEY Exhibit 24.2 KNOW
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POWER OF ATTORNEY Exhibit 24.4 KNOW
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POWER OF ATTORNEY Exhibit 24.6 KNOW
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POWER OF ATTORNEY Exhibit 24.8 KNOW
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POWER OF ATTORNEY Exhibit 24.10 KNO
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POWER OF ATTORNEY Exhibit 24.12 KNO
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POWER OF ATTORNEY Exhibit 24.14 KNO
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POWER OF ATTORNEY Exhibit 24.16 KNO
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POWER OF ATTORNEY Exhibit 24.18 KNO
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POWER OF ATTORNEY Exhibit 24.20 KNO
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POWER OF ATTORNEY Exhibit 24.22 KNO
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POWER OF ATTORNEY Exhibit 24.24 KNO
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POWER OF ATTORNEY Exhibit 24.26 KNO
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POWER OF ATTORNEY Exhibit 24.28 KNO
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POWER OF ATTORNEY Exhibit 24.30 KNO
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POWER OF ATTORNEY Exhibit 24.32 KNO
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POWER OF ATTORNEY Exhibit 24.34 KNO
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POWER OF ATTORNEY Exhibit 24.36 KNO
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I, Christopher M. Crane, certify th
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I, Christopher M. Crane, certify th
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I, Anne R. Pramaggiore, certify tha
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I, Craig L. Adams, certify that: CE
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I, Kenneth W. DeFontes Jr., certify
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Certificate Pursuant to Section 135
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Certificate Pursuant to Section 135
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Certificate Pursuant to Section 135
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Certificate Pursuant to Section 135
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Certificate Pursuant to Section 135