##### Table of Contents



UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
 
 FORM 10-Q
 QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
 For the Quarterly Period ended June 30, 2006
 Commission file number 1-2198
  THE DETROIT EDISON COMPANY
  Michigan
    
    38-0478650(State or other jurisdiction of
    
    (I.R.S. Employerincorporation or organization)
    
    Identification No.)2000 2nd Avenue, Detroit, Michigan
    
    48226-1279(Address of principal executive offices)
    
    (Zip Code)
 313-235-4000
  Yes þ No o
  Large accelerated filer o
    
    Accelerated filer o
    
    Non-accelerated filerþ
  Yes o No þ




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##### 



The Detroit Edison Company
 Quarterly Report on Form 10-Q  Quarter Ended June 30, 2006
 Table of Contents
  
 PageDefinitions
    
    
    1Forward-Looking Statements
    
    
    2Part I  Financial InformationItem 1.
    
    Financial StatementsConsolidated Statement of Operations
    
    
    7Consolidated Statement of Financial Position
    
    
    8Consolidated Statement of Cash Flows
    
    
    10Consolidated Statement of Changes in Shareholders Equity and Comprehensive Income
    
    
    11Notes to Consolidated Financial Statements
    
    
    12Item 2.
    
    Managements Narrative Analysis of Results of Operations
    
    
    3Item 4.
    
    Controls and Procedures
    
    
    6Part II  Other InformationItem 1.
    
    Legal Proceedings
    
    
    21Item 6.
    
    Exhibits
    
    
    21Signature
    
    
    22Twentieth Supplemental Indenture, dated May 15, 2006Indenture, Dated May 15, 2006Computation of Ratios of Earnings to Fixed ChargesChief Executive Officer Section 302Chief Financial Officer Section 302Chief Executive Officer Section 906Chief Financial Officer Section 906




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Definitions
 Customer Choice
    
    Statewide initiatives giving customers in Michigan
the option to choose alternative suppliers for
electricity.Detroit Edison
    
    The Detroit Edison Company (a direct wholly owned
subsidiary of DTE Energy) and any subsidiary
companiesDTE Energy
    
    DTE Energy Company, the parent of Detroit Edison and directly or
indirectly the parent company of numerous non-utility subsidiariesEPA
    
    United States Environmental Protection AgencyFERC
    
    Federal Energy Regulatory CommissionITC
    
    International Transmission Company (until February 28, 2003, a
wholly owned subsidiary of DTE Energy)MPSC
    
    Michigan Public Service CommissionNRC
    
    Nuclear Regulatory CommissionPSCR
    
    A power supply cost recovery mechanism authorized by the MPSC that allows Detroit Edison to
recover through rates its fuel, fuel-related and purchased power expenses. The clause was
suspended under Michigans restructuring legislation (signed into law June 5, 2000), which
lowered and froze electric customer rates. The clause was reinstated by the MPSC effective
January 1, 2004.Securitization
    
    Detroit Edison financed specific stranded costs at lower interest rates
through the sale of rate reduction bonds by a wholly owned special purpose entity, the Detroit Edison Securitization Funding LLC.SFAS
    
    Statement of Financial Accounting StandardsStranded costs
    
    Costs incurred by utilities in order to serve customers in a regulated environment
that absent special regulatory approval would not otherwise expect to be recoverable if
customers switch to alternative energy suppliers.Units of MeasurementgWh
    
    Gigawatthour of electricitykWh
    
    Kilowatthour of electricityMW
    
    Megawatt of electricityMWh
    
    Megawatthour of electricity
 1




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Forward-Looking Statements
  
    
    the effects of weather and other natural phenomena on operations and sales to customers, and purchases from suppliers;
    
    economic climate and population growth or decline in the geographic areas where we do business;
    
    environmental issues, laws, regulations, and the cost of remediation and compliance;
    
    nuclear regulations and operations associated with nuclear facilities;
    
    implementation of the electric Customer Choice program;
    
    impact of electric utility restructuring in Michigan, including legislative amendments;
    
    employee relations and the impact of collective bargaining agreements;
    
    unplanned outages;
    
    access to capital markets and capital market conditions and the results of other financing efforts that can be affected
by credit agency ratings;
    
    the timing and extent of changes in interest rates;
    
    the level of borrowings;
    
    changes in the cost and availability of coal and other raw materials, and purchased power;
    
    effects of competition;
    
    impact of regulation by the FERC, MPSC, NRC and other applicable governmental proceedings and regulations;
    
    changes in and application of federal, state and local tax laws and their interpretations, including the Internal
Revenue Code, regulations, rulings, court proceedings and audits;
    
    the ability to recover costs through rate increases;
    
    the availability, cost, coverage and terms of insurance;
    
    the cost of protecting assets against, or damage due to, terrorism;
    
    changes in and application of accounting standards and financial reporting regulations;
    
    changes in federal or state laws and their interpretation with respect to regulation, energy policy and other business
issues;
    
    uncollectible accounts receivable;
    
    litigation and related appeals; and
    
    changes in the economic and financial viability of our suppliers, customers and trading counterparties, and the
continued ability of such parties to perform their obligations to Detroit Edison.
  2




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The Detroit Edison Company
 
 Managements Narrative Analysis of Results of Operations
  Factors impacting income
 Increase (Decrease) in Income Statement Components
    
    Three
    
    
    SixCompared to Prior Year
    
    Months
    
    
    Months(in Millions)Operating Revenues
    
    $
    140
    
    
    $
    200Fuel and Purchased Power
    
    
    66
    
    
    
    74Gross Margin
    
    
    74
    
    
    
    126Operation and Maintenance
    
    
    39
    
    
    
    62Depreciation and Amortization
    
    
    8
    
    
    
    25Taxes Other Than Income
    
    
    2
    
    
    
    2Operating Income
    
    
    25
    
    
    
    37Other (Income) and Deductions
    
    
    4
    
    
    
    10Income Tax Provision
    
    
    7
    
    
    
    9Net Income
    
    $
    14
    
    
    $
    18
 Gross margins
 Increase (Decrease) in Gross Margin Components
    
    Three
    
    
    SixCompared to Prior Year
    
    Months
    
    
    Months(in Millions)Weather related margin impacts
    
    $
    (21
    )
    
    $
    (31
    )Removal of residential rate caps effective January 1, 2006
    
    
    32
    
    
    
    54Return of customers from electric Customer Choice
    
    
    37
    
    
    
    66Service territory economic performance
    
    
    5
    
    
    
    19Other, net
    
    
    21
    
    
    
    18Increase in gross margin performance
    
    $
    74
    
    
    $
    126
 3




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Three Months Ended
    
    
    Six Months EndedJune 30
    
    
    June 30Power Generated and Purchased
    
    2006
    
    
    2005
    
    
    2006
    
    
    2005(in Thousands of MWh)Power Plant GenerationFossil
    
    
    9,206
    
    
    
    9,546
    
    
    
    18,515
    
    
    
    19,310Nuclear
    
    
    922
    
    
    
    2,272
    
    
    
    3,118
    
    
    
    4,32510,128
    
    
    
    11,818
    
    
    
    21,633
    
    
    
    23,635Purchased Power
    
    
    3,318
    
    
    
    1,331
    
    
    
    4,832
    
    
    
    2,809System Output
    
    
    13,446
    
    
    
    13,149
    
    
    
    26,465
    
    
    
    26,444Less Line Loss and Internal Use
    
    
    (856
    )
    
    
    (752
    )
    
    
    (1,681
    )
    
    
    (1,349
    )Net System Output
    
    
    12,590
    
    
    
    12,397
    
    
    
    24,784
    
    
    
    25,095Average Unit Cost ($/MWh)Generation (1)
    
    $
    16.41
    
    
    $
    14.66
    
    
    $
    15.48
    
    
    $
    14.53Purchased Power
    
    $
    54.03
    
    
    $
    85.66
    
    
    $
    52.89
    
    
    $
    66.51Overall Average Unit Cost
    
    $
    25.69
    
    
    $
    21.85
    
    
    $
    22.31
    
    
    $
    20.05
 
 (1)
    
    Represents fuel costs associated with power plants. Three Months Ended
    
    
    Six Months Ended(in Thousands of MWh)
    
    June 30
    
    
    June 302006
    
    
    2005
    
    
    2006
    
    
    2005Electric SalesResidential
    
    
    3,514
    
    
    
    3,766
    
    
    
    7,350
    
    
    
    7,817Commercial
    
    
    4,506
    
    
    
    3,820
    
    
    
    8,513
    
    
    
    7,184Industrial
    
    
    3,209
    
    
    
    3,024
    
    
    
    6,363
    
    
    
    5,920Wholesale
    
    
    702
    
    
    
    557
    
    
    
    1,377
    
    
    
    1,120Other
    
    
    89
    
    
    
    88
    
    
    
    197
    
    
    
    19312,020
    
    
    
    11,255
    
    
    
    23,800
    
    
    
    22,234Interconnections sales (1)
    
    
    570
    
    
    
    1,142
    
    
    
    984
    
    
    
    2,861Total Electric Sales
    
    
    12,590
    
    
    
    12,397
    
    
    
    24,784
    
    
    
    25,095Electric DeliveriesRetail and Wholesale
    
    
    12,020
    
    
    
    11,255
    
    
    
    23,800
    
    
    
    22,234Electric Choice
    
    
    984
    
    
    
    1,996
    
    
    
    2,347
    
    
    
    3,910Electric Choice  Self Generators (2)
    
    
    127
    
    
    
    174
    
    
    
    478
    
    
    
    366Total Electric Sales and Deliveries
    
    
    13,131
    
    
    
    13,425
    
    
    
    26,625
    
    
    
    26,510
 
 (1)
    
    Represents power that is not distributed by Detroit Edison.(2)
    
    Represents deliveries for self generators who have purchased power from alternative energy
suppliers to supplement their power requirements. Operation and maintenance
 Depreciation and amortization
 Other income and deductions
 4




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Outlook
    
    
    amount and timing of cost recovery allowed as a result of regulatory proceedings,
related appeals, or new legislation;
    
    our ability to reduce costs and maximize plant performance;
    
    variations in market prices of power, coal and gas;
    
    economic conditions within the State of Michigan;
    
    weather, including the severity and frequency of storms; and
    
    levels of customer participation in the electric Customer Choice program.
  5




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CONTROLS AND PROCEDURES
 (a) Evaluation of disclosure controls and procedures
  (b) Changes in internal control over financial reporting
  6




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The Detroit Edison Company
 
 Consolidated Statement of Operations (unaudited)
 Three Months Ended
    
    
    Six Months EndedJune 30
    
    
    June 30(in Millions)
    
    2006
    
    
    2005
    
    
    2006
    
    
    2005Operating Revenues
    
    $
    1,175
    
    
    $
    1,035
    
    
    $
    2,225
    
    
    $
    2,025Operating ExpensesFuel and purchased power
    
    
    409
    
    
    
    343
    
    
    
    718
    
    
    
    644Operation and maintenance
    
    
    369
    
    
    
    330
    
    
    
    713
    
    
    
    651Depreciation and amortization
    
    
    168
    
    
    
    160
    
    
    
    335
    
    
    
    310Taxes other than income
    
    
    65
    
    
    
    63
    
    
    
    134
    
    
    
    1321,011
    
    
    
    896
    
    
    
    1,900
    
    
    
    1,737Operating Income
    
    
    164
    
    
    
    139
    
    
    
    325
    
    
    
    288Other (Income) and DeductionsInterest expense
    
    
    76
    
    
    
    69
    
    
    
    148
    
    
    
    133Interest income
    
    
    (1
    )
    
    
    
    
    
    
    (1
    )
    
    
    (1
    )Other income
    
    
    (6
    )
    
    
    (7
    )
    
    
    (13
    )
    
    
    (13
    )Other expenses
    
    
    10
    
    
    
    13
    
    
    
    20
    
    
    
    2579
    
    
    
    75
    
    
    
    154
    
    
    
    144Income Before Income Taxes
    
    
    85
    
    
    
    64
    
    
    
    171
    
    
    
    144Income Tax Provision
    
    
    28
    
    
    
    21
    
    
    
    55
    
    
    
    46Net Income
    
    $
    57
    
    
    $
    43
    
    
    $
    116
    
    
    $
    98
  7




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The Detroit Edison Company
 
 Consolidated Statement of Financial Position
 (Unaudited)June 30
    
    
    December 312006
    
    
    2005(in Millions)ASSETSCurrent AssetsCash and cash equivalents
    
    $
    27
    
    
    $
    26Restricted cash
    
    
    82
    
    
    
    84Accounts receivableCustomer (less allowance for doubtful
accounts of $61 and $54, respectively)
    
    
    596
    
    
    
    528Other
    
    
    132
    
    
    
    112Accrued power supply cost recovery revenue
    
    
    214
    
    
    
    144InventoriesFuel
    
    
    145
    
    
    
    123Materials and supplies
    
    
    119
    
    
    
    116Other
    
    
    68
    
    
    
    431,383
    
    
    
    1,176InvestmentsNuclear decommissioning trust funds
    
    
    679
    
    
    
    646Other
    
    
    67
    
    
    
    65746
    
    
    
    711PropertyProperty, plant and equipment
    
    
    13,533
    
    
    
    13,416Less accumulated depreciation
    
    
    (5,451
    )
    
    
    (5,595
    )8,082
    
    
    
    7,821Other AssetsRegulatory assets
    
    
    1,963
    
    
    
    2,006Securitized regulatory assets
    
    
    1,289
    
    
    
    1,340Other
    
    
    116
    
    
    
    1153,368
    
    
    
    3,461Total Assets
    
    $
    13,579
    
    
    $
    13,169
  8




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The Detroit Edison Company  Consolidated Statement of Financial Position
 (Unaudited)June 30
    
    
    December 312006
    
    
    2005(in Millions, Except Shares)LIABILITIES AND SHAREHOLDERS EQUITYCurrent LiabilitiesAccounts payable
    
    $
    419
    
    
    $
    392Accrued interest
    
    
    80
    
    
    
    79Dividends payable
    
    
    76
    
    
    
    76Accrued vacations
    
    
    82
    
    
    
    80Short-term borrowings
    
    
    176
    
    
    
    163Accrued power supply cost recovery
    
    
    135
    
    
    
    129Current portion of long-term debt, including capital leases
    
    
    137
    
    
    
    135Other
    
    
    225
    
    
    
    2081,330
    
    
    
    1,262Other LiabilitiesDeferred income taxes
    
    
    1,921
    
    
    
    1,961Regulatory liabilities
    
    
    241
    
    
    
    224Asset retirement obligations (Note 1)
    
    
    985
    
    
    
    953Unamortized investment tax credit
    
    
    110
    
    
    
    115Nuclear decommissioning
    
    
    90
    
    
    
    85Accrued pension liability
    
    
    315
    
    
    
    261Other
    
    
    782
    
    
    
    7874,444
    
    
    
    4,386Long-Term Debt (net of current portion)Mortgage bonds, notes and other
    
    
    3,452
    
    
    
    3,221Securitization bonds
    
    
    1,238
    
    
    
    1,295Capital lease obligations
    
    
    53
    
    
    
    574,743
    
    
    
    4,573Contingencies (Notes 3 and 5)Shareholders EquityCommon stock, $10 par value, 400,000,000 shares
authorized, 138,632,324 shares issued
and outstanding
    
    
    1,386
    
    
    
    1,386Additional paid in capital
    
    
    1,254
    
    
    
    1,104Common stock expense
    
    
    (44
    )
    
    
    (44
    )Retained earnings
    
    
    464
    
    
    
    500Accumulated other comprehensive income
    
    
    2
    
    
    
    23,062
    
    
    
    2,948Total Liabilities and Shareholders Equity
    
    $
    13,579
    
    
    $
    13,169
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The Detroit Edison Company
 
 Consolidated Statement of Cash Flows (Unaudited)
 Six Months EndedJune 302006
    
    
    2005(in Millions)Operating ActivitiesNet Income
    
    $
    116
    
    
    $
    98Adjustments to reconcile net income to net cash from
operating activities:Depreciation and amortization
    
    
    335
    
    
    
    310Deferred income taxes
    
    
    5
    
    
    
    (10
    )Changes in assets and liabilities, exclusive of changes
shown separately (Note 1)
    
    
    (111
    )
    
    
    59Net cash from operating activities
    
    
    345
    
    
    
    457Investing ActivitiesPlant and equipment expenditures
    
    
    (512
    )
    
    
    (321
    )Proceeds from sale of other assets, net
    
    
    18
    
    
    
    Restricted cash for debt redemptions
    
    
    2
    
    
    
    6Notes receivable from affiliate
    
    
    
    
    
    
    85Proceeds from sale of nuclear decommissioning trust funds
    
    
    99
    
    
    
    112Investment in nuclear decommissioning trust funds
    
    
    (118
    )
    
    
    (130
    )Other investments
    
    
    (15
    )
    
    
    (29
    )Net cash used for investing activities
    
    
    (526
    )
    
    
    (277
    )Financing ActivitiesIssuance of long-term debt
    
    
    247
    
    
    
    395Redemption of long-term debt
    
    
    (71
    )
    
    
    (628
    )Short-term borrowings, net
    
    
    13
    
    
    
    219Capital contribution by parent company
    
    
    150
    
    
    
    Dividends on common stock
    
    
    (152
    )
    
    
    (152
    )Other
    
    
    (5
    )
    
    
    (3
    )Net cash from (used for) financing activities
    
    
    182
    
    
    
    (169
    )Net Increase in Cash and Cash Equivalents
    
    
    1
    
    
    
    11Cash and Cash Equivalents at Beginning of the Period
    
    
    26
    
    
    
    6Cash and Cash Equivalents at End of the Period
    
    $
    27
    
    
    $
    17
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The Detroit Edison Company
 
 Consolidated Statement of Changes in Shareholders Equity
 and Comprehensive Income (unaudited)
 Accumulated(Dollars in Millions,
    
    
    
    
    
    
    
    
    
    Additional
    
    Common
    
    
    
    
    
    OtherShares in Thousands)
    
    Common Stock
    
    Paid in
    
    Stock
    
    Retained
    
    ComprehensiveShares
    
    Amount
    
    Capital
    
    Expense
    
    Earnings
    
    Income
    
    TotalBalance, December 31, 2005
    
    
    138,632
    
    
    $
    1,386
    
    
    $
    1,104
    
    
    $
    (44
    )
    
    $
    500
    
    
    $
    2
    
    
    $
    2,948Net income
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    116
    
    
    
    
    
    
    
    116Capital contribution by
parent company
    
    
    
    
    
    
    
    
    
    
    150
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    150Dividends declared on
common stock
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    (152
    )
    
    
    
    
    
    
    (152
    )Balance, June 30, 2006
    
    
    138,632
    
    
    $
    1,386
    
    
    $
    1,254
    
    
    $
    (44
    )
    
    $
    464
    
    
    $
    2
    
    
    $
    3,062
  2006
    
    
    2005(in Millions)Net income
    
    $
    116
    
    
    $
    98Comprehensive income
    
    $
    116
    
    
    $
    98
  11




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The Detroit Edison Company
 
 Notes to Consolidated Financial Statements (unaudited)
 NOTE 1  GENERAL
     Consolidated Statement of Cash Flows
  Six Months EndedJune 302006
    
    
    2005(in Millions)Changes in Assets and Liabilities, Exclusive
of Changes Shown SeparatelyAccounts receivable, net
    
    $
    (118
    )
    
    $
    (47
    )Inventories
    
    
    (25
    )
    
    
    (8
    )Accrued pensions
    
    
    66
    
    
    
    54Accounts payable
    
    
    39
    
    
    
    18Accrued power supply cost recovery refund
    
    
    (63
    )
    
    
    (29
    )Income taxes payable
    
    
    49
    
    
    
    50General taxes
    
    
    2
    
    
    
    3Postretirement obligation
    
    
    
    
    
    
    28Other assets
    
    
    (22
    )
    
    
    (29
    )Other liabilities
    
    
    (39
    )
    
    
    19$
    (111
    )
    
    $
    59
  Six Months EndedJune 30(in Millions)
    
    2006
    
    2005Cash Paid for:Interest (excluding interest capitalized)
    
    $
    147
    
    
    $
    131Income taxes
    
    $
    1
    
    
    $
    
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Asset Retirement Obligations
 Accounting for
Asset Retirement Obligations Accounting for Conditional Asset
Retirement Obligations, an interpretation of FASB Statement No. 143
 Accounting for the
Effects of Certain Types of Regulation.
  (in Millions)Asset retirement obligations at January 1, 2006
    
    $
    953Accretion
    
    
    32Asset retirement obligations at June 30, 2006
    
    $
    985
  Retirement Benefits and Trusteed Assets
  Other Postretirement(in Millions)
    
    Pension Benefits
    
    
    BenefitsThree Months Ended June 30
    
    2006
    
    
    2005
    
    
    2006
    
    
    2005Service Cost
    
    $
    13
    
    
    $
    13
    
    
    $
    12
    
    
    $
    11Interest Cost
    
    
    34
    
    
    
    33
    
    
    
    22
    
    
    
    20Expected Return on Plan Assets
    
    
    (34
    )
    
    
    (33
    )
    
    
    (13
    )
    
    
    (14
    )Amortization ofNet loss
    
    
    11
    
    
    
    12
    
    
    
    13
    
    
    
    11Prior service cost
    
    
    2
    
    
    
    3
    
    
    
    1
    
    
    
    1Net transition liability
    
    
    
    
    
    
    
    
    
    
    2
    
    
    
    1Special Termination Benefits
    
    
    14
    
    
    
    
    
    
    
    1
    
    
    
    Net Periodic Benefit Cost
    
    $
    40
    
    
    $
    28
    
    
    $
    38
    
    
    $
    30
 13




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Other Postretirement(in Millions)
    
    Pension Benefits
    
    
    BenefitsSix Months Ended June 30
    
    2006
    
    
    2005
    
    
    2006
    
    
    2005Service Cost
    
    $
    26
    
    
    $
    27
    
    
    $
    24
    
    
    $
    22Interest Cost
    
    
    68
    
    
    
    66
    
    
    
    44
    
    
    
    40Expected Return on Plan Assets
    
    
    (68
    )
    
    
    (67
    )
    
    
    (25
    )
    
    
    (29
    )Amortization ofNet loss
    
    
    23
    
    
    
    25
    
    
    
    26
    
    
    
    22Prior service cost
    
    
    4
    
    
    
    5
    
    
    
    2
    
    
    
    2Net transition liability
    
    
    
    
    
    
    
    
    
    
    3
    
    
    
    3Special Termination Benefits
    
    
    14
    
    
    
    
    
    
    
    1
    
    
    
    Net Periodic Benefit Cost
    
    $
    67
    
    
    $
    56
    
    
    $
    75
    
    
    $
    60
  Affiliate Transactions
  NOTE 2  NEW ACCOUNTING PRONOUNCEMENTS
 Stock-Based Compensation
 Share-Based Payment,
  Accounting for Uncertainty in Income Taxes
 Accounting for
Uncertainty in Income Taxes  An Interpretation of FASB Statement No. 109  Accounting for Income
Taxes.
 14




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##### Table of Contents



NOTE 3  REGULATORY MATTERS
 Electric Rate Restructuring Proposal
  2004 PSCR Reconciliation and 2004 Net Stranded Cost Case
    MPSC Show-Cause Order
  15




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##### Table of Contents



Power Supply Recovery Proceedings
 2005 Plan Year
 2006 Plan Year 
 16




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##### Table of Contents



Electric Shut-Off and Restoration
  Regulatory Accounting Treatment for Performance Excellence Process
  Revenue Sufficiency Guarantee
  17




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##### Table of Contents



Other
  NOTE 4  LONG-TERM DEBT
 Debt Issuances
  (in Millions)MonthCompany
    
    Issued
    
    Type
    
    Interest Rate
    
    Maturity
    
    AmountDetroit Edison
    
    May
    
    Senior Notes (1)
    
    
    6.625
    %
    
    June 2036
    
    $
    250
 
 (1)
    
    The proceeds from the issuance were used to repay short-term borrowings of Detroit Edison and for general corporate purposes NOTE 5  COMMITMENTS AND CONTINGENCIES
 Environmental
 Air
 Water
 Contaminated Sites
 Personal Property Taxes
  18




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##### Table of Contents



Income Taxes
  Other Commitments
   19




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##### Table of Contents



Bankruptcies
  Other
   20




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##### Table of Contents



Other Information
 
 Legal Proceedings
   
 Exhibits
 ExhibitNumber
    
    DescriptionFiled:4-249
    
    Twentieth Supplemental Indenture, dated as of May 15, 2006 to the Collateral Trust
Indenture, dated as of June 30, 1993 between The Detroit Edison Company and J.P. Morgan Trust
Company, National Association, as successor trustee, providing for 2006 Series A Senior Notes
due 2036.4-250
    
    Supplemental Indenture, dated as of May 15, 2006 to Mortgage and Deed of Trust dated as of
October 1, 1924 between The Detroit Edison Company and J.P. Morgan Trust Company, National
Association, as successor trustee, providing for General and Refunding Mortgage Bonds, 2006
Series A.12-25
    
    Computation of Ratios of Earnings to Fixed Charges31-25
    
    Chief Executive Officer Section 302 Form 10-Q Certification31-26
    
    Chief Financial Officer Section 302 Form 10-Q CertificationIncorporated by reference:1-1
    
    Underwriting Agreement dated May 17, 2006 among The Detroit Edison Company, Barclays Capital
Inc., Citigroup Global Markets Inc. and J.P. Morgan Securities Inc. (Exhibit 1.1 to Form 8-K
dated May 17, 2006).Furnished:32-25
    
    Chief Executive Officer Section 906 Form 10-Q Certification32-26
    
    Chief Financial Officer Section 906 Form 10-Q Certification
 21




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##### Table of Contents



Signature
  THE DETROIT EDISON COMPANYDate: August 8, 2006
    /s/ PETER B. OLEKSIAKPeter B. OleksiakController 22




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##### Table of Contents



Exhibit Index
 ExhibitNumber
    
    Description4-249
    
    Twentieth Supplemental Indenture, dated as of May 15, 2006 to the Collateral Trust
Indenture, dated as of June 30, 1993 between The Detroit Edison Company and J.P. Morgan Trust
Company, National Association, as successor trustee, providing for 2006 Series A Senior Notes
due 2036.4-250
    
    Supplemental Indenture, dated as of May 15, 2006 to Mortgage and Deed of Trust dated as of
October 1, 1924 between The Detroit Edison Company and J.P. Morgan Trust Company, National
Association, as successor trustee, providing for General and Refunding Mortgage Bonds, 2006
Series A.12-25
    
    Computation of Ratios of Earnings to Fixed Charges31-25
    
    Chief Executive Officer Section 302 Form 10-Q Certification31-26
    
    Chief Financial Officer Section 302 Form 10-Q Certification32-25
    
    Chief Executive Officer Section 906 Form 10-Q Certification32-26
    
    Chief Financial Officer Section 906 Form 10-Q Certification