<PAGE>   1
================================================================================
                      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 QUARTER ENDED MARCH 31, 1999


<TABLE>
<CAPTION>                                                                                                                    
                                                                                                                             
                                                                                                                             
COMMISSION                    REGISTRANTS; STATE OF INCORPORATION;                          I.R.S. EMPLOYER                      
FILE NUMBER                   ADDRESS; AND TELEPHONE NUMBER                                 IDENTIFICATION NO.                   
-----------                   ------------------------------------                          ------------------
<S>                           <C>                                                           <C>                                  
1-11607                       DTE Energy Company                                            38-3217752                           
                              (a Michigan corporation)                                                                           
                              2000 2nd Avenue                                                                                    
                              Detroit, Michigan 48226-1279                                                                       
                              313-235-4000                                                                                       
                                                                                                                             
                                                                                                                             
1-2198                        The Detroit Edison Company                                    38-0478650                           
                              (a Michigan corporation)                                                                           
                              2000 2nd Avenue                                                                                    
                              Detroit, Michigan 48226-1279                                                                       
                              313-235-8000                                                                                       
</TABLE>                                                                    



Indicate by check mark whether the registrants (1) have filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrants were required to file such reports), and (2) have been subject to
such filing requirements for the past 90 days. YES X   NO
                                                  ---    ---



At March 31, 1999, 145,045,159 shares of DTE Energy's Common Stock,
substantially all held by non-affiliates, were outstanding.


================================================================================



<PAGE>   2



                               DTE ENERGY COMPANY
                                       AND
                           THE DETROIT EDISON COMPANY
                                    FORM 10-Q
                      FOR THE QUARTER ENDED MARCH 31, 1999

This document contains the Quarterly Reports on Form 10-Q for the quarter ended
March 31, 1999 for each of DTE Energy Company and The Detroit Edison Company.
Information contained herein relating to an individual registrant is filed by
such registrant on its own behalf. Accordingly, except for its subsidiaries, The
Detroit Edison Company makes no representation as to information relating to any
other companies affiliated with DTE Energy Company.

                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                            Page
                                                                                                            ----

<S>                                                                                                           <C>
Definitions....................................................................................................3

Quarterly Report on Form 10-Q for DTE Energy Company:
     Part I   - Financial Information..........................................................................4
                Item 1 -   Financial Statements................................................................4
                Item 2 -   Management's Discussion and Analysis of Financial
                           Condition and Results of Operations................................................20

Quarterly Report on Form 10-Q for The Detroit Edison Company:
     Part I   - Financial Information.........................................................................25
                Item 1 -   Financial Statements...............................................................25
                Item 2 -   Management's Discussion and Analysis of Financial
                           Condition and Results of Operations................................................25
     Part II  - Other Information.............................................................................25
                Item 1 -  Legal Proceedings...................................................................25
                Item 5 -  Other Information...................................................................26

Quarterly Reports on Form 10-Q for DTE Energy Company and The Detroit Edison
   Company:
                Item 6 -   Exhibits and Reports on Form 8-K...................................................27

Signature Page to DTE Energy Company Quarterly Report on Form 10-Q............................................35
Signature Page to The Detroit Edison Company Quarterly Report on Form 10-Q....................................36
</TABLE>
                                       
                                        2
<PAGE>   3


                                   DEFINITIONS
<TABLE>
<CAPTION>


<S>                             <C>
ABATE............................Association of Businesses Advocating Tariff Equity

Annual Report....................1998 Annual Report to the Securities and Exchange Commission on Form 10-K for
                                    DTE Energy Company or The Detroit Edison Company, as the case may be

Annual Report Notes..............Notes to Consolidated Financial Statements appearing on pages 45 through 72 
                                    and 76 through 79 of the 1998 Annual Report to the Securities and Exchange 
                                    Commission on Form 10-K for DTE Energy Company and The Detroit Edison Company, 
                                    as the case may be

Company..........................DTE Energy Company and Subsidiary Companies

Detroit Edison...................The Detroit Edison Company (a wholly owned subsidiary of DTE Energy Company) and
                                    Subsidiary Companies

Direct Access....................Gives all retail customers equal opportunity to utilize the transmission system
                                    which results in access to competitive generation resources

DTE Capital......................DTE Capital Corporation (a wholly owned subsidiary of DTE Energy Company)

EPA..............................United States Environmental Protection Agency

FERC.............................Federal Energy Regulatory Commission

kWh..............................Kilowatthour

MPSC.............................Michigan Public Service Commission

MW...............................Megawatt

MWh..............................Megawatthour

Note(s)..........................Note(s) to Condensed Consolidated Financial Statements (Unaudited) appearing herein

PSCR.............................Power Supply Cost Recovery

Registrant.......................Company or Detroit Edison, as the case may be
</TABLE>
                                        3

<PAGE>   4


              QUARTERLY REPORT ON FORM 10-Q FOR DTE ENERGY COMPANY
                         PART I - FINANCIAL INFORMATION

ITEM 1 - CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED).


The following condensed consolidated financial statements (unaudited) are
included herein.

                                                                            Page
                                                                            ----

DTE Energy Company:
  Condensed Consolidated Statement of Income...................................5
  Condensed Consolidated Balance Sheet.........................................6
  Condensed Consolidated Statement of Cash Flows...............................8
  Condensed Consolidated Statement of Changes in Shareholders' Equity..........9
The Detroit Edison Company:
  Condensed Consolidated Statement of Income..................................11
  Condensed Consolidated Balance Sheet........................................12
  Condensed Consolidated Statement of Cash Flows..............................14
  Condensed Consolidated Statement of Changes in Shareholder's Equity.........15
Notes to Condensed Consolidated Financial Statements (Unaudited)..............16
Independent Accountants' Report...............................................19


Note:      Detroit Edison's Condensed Consolidated Financial Statements are 
           presented here for ease of reference and are not considered to be 
           part of Item I of the Company's report.


                                       4

<PAGE>   5

                      
                               DTE ENERGY COMPANY
             CONDENSED CONSOLIDATED STATEMENT OF INCOME (UNAUDITED)
                      (Millions, Except Per Share Amounts)
<TABLE>
<CAPTION>

                                                                                      Three Months Ended
                                                                                           March 31             
                                                                                -----------------------------
                                                                                   1999              1998     
                                                                                ------------      -----------                     
<S>                                                                             <C>               <C>            
OPERATING REVENUES                                                                    $1,024           $  945
                                                                                      ------           ------
OPERATING EXPENSES
      Fuel and purchased power                                                           231              208
      Operation and maintenance                                                          325              268
      Depreciation and amortization                                                      182              165
      Taxes other than income                                                             71               71
                                                                                      ------           ------
          Total Operating Expenses                                                       809              712
                                                                                      ------           ------

OPERATING INCOME                                                                         215              233
                                                                                      ------           ------
INTEREST EXPENSE AND OTHER
      Interest expense                                                                    83               74
      Preferred stock dividends of subsidiary                                              -                3
      Other - net                                                                          3                -
                                                                                      ------           ------
          Total Interest Expense and Other                                                86               77
                                                                                      ------           ------

INCOME BEFORE INCOME TAXES                                                               129              156

INCOME TAXES                                                                              14               52
                                                                                      ------           ------

NET INCOME                                                                            $  115           $  104
                                                                                      ======           ======
AVERAGE COMMON SHARES OUTSTANDING                                                        145              145
                                                                                      ------           ------

EARNINGS PER COMMON SHARE - BASIC AND DILUTED                                         $ 0.79           $ 0.72
                                                                                      ------           ------
</TABLE>
      

      See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                        5
<PAGE>   6


                               DTE ENERGY COMPANY
                CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)
                 (Millions, Except Per Share Amounts and Shares)

<TABLE>
<CAPTION>

                                                                                   March 31           December 31
                                                                                      1999               1998      
                                                                                ---------------     ---------------

<S>                                                                             <C>                   <C>
ASSETS
CURRENT ASSETS
      Cash and cash equivalents                                                         $    41             $   130
      Restricted cash                                                                       132                 121
      Accounts receivable
           Customer (less allowance for doubtful accounts of $20)                           322                 316
           Accrued unbilled revenues                                                        143                 153
           Other                                                                            117                 135
      Inventories (at average cost)
           Fuel                                                                             161                 171
           Materials and supplies                                                           152                 167
      Other                                                                                 136                  39
                                                                                        -------             -------
                                                                                          1,204               1,232
                                                                                        -------             -------

INVESTMENTS
      Nuclear decommissioning trust funds                                                   327                 309
      Other                                                                                 247                 261
                                                                                        -------             -------
                                                                                            574                 570
                                                                                        -------             -------

PROPERTY
      Property, plant and equipment                                                      11,224              11,121
      Property under capital leases                                                         241                 242
      Nuclear fuel under capital lease                                                      662                 659
      Construction work in progress                                                         198                 156
                                                                                        -------             -------
                                                                                         12,325              12,178
                                                                                        -------             -------
Less accumulated depreciation and amortization                                            5,336               5,235
                                                                                        -------             -------
                                                                                          6,989               6,943
                                                                                        -------             -------

REGULATORY ASSETS                                                                         3,022               3,091
                                                                                        -------             -------

OTHER ASSETS                                                                                264                 252
                                                                                        -------             -------


TOTAL ASSETS                                                                            $12,053             $12,088
                                                                                        =======             =======
</TABLE>


     See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                        6

<PAGE>   7
<TABLE>
<CAPTION>

                                                                                   March 31          December 31
                                                                                      1999              1998      
                                                                                ---------------     --------------
<S>                                                                             <C>                  <C>
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
      Accounts payable                                                                  $   187            $   239
      Accrued interest                                                                       54                 57
      Dividends payable                                                                      75                 75
      Accrued payroll                                                                        87                101
      Short-term borrowings                                                                 280                231
      Deferred income taxes                                                                 100                 60
      Current portion long-term debt                                                        481                294
      Current portion capital leases                                                        109                118
      Other                                                                                 151                217
                                                                                        -------            -------
                                                                                          1,524              1,392
                                                                                        -------            -------

OTHER LIABILITIES
      Deferred income taxes                                                               1,846              1,888
      Capital leases                                                                        124                126
      Regulatory Liabilities                                                                322                294
      Other                                                                                 517                493
                                                                                        -------            -------
                                                                                          2,809              2,801
                                                                                        -------            -------

LONG-TERM DEBT                                                                            3,984              4,197
                                                                                        -------            -------



SHAREHOLDERS' EQUITY
      Common stock, without par value, 400,000,000 shares
           authorized, 145,045,159 and 145,071,317 issued
           and outstanding, respectively                                                  1,950              1,951
      Retained earnings                                                                   1,786              1,747
                                                                                        -------            -------
                                                                                          3,736              3,698
                                                                                        -------            -------

CONTINGENCIES (NOTE 5)


TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                                              $12,053            $12,088
                                                                                        =======            =======
</TABLE>

     See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                        7

<PAGE>   8

                               DTE ENERGY COMPANY
           CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)
                                   (Millions)

<TABLE>
<CAPTION>

                                                                                    Three Months Ended
                                                                                          March 31
                                                                                ------------------------
                                                                                  1999            1998
                                                                                ------------------------
<S>                                                                             <C>              <C>
OPERATING ACTIVITIES
   Net Income                                                                   $ 115            $ 104
   Adjustments to reconcile net income to net cash from operating activities:
     Depreciation and amortization                                                182              165
     Other                                                                         48                3
     Changes in current assets and liabilities:
       Restricted cash                                                            (11)             (16)
       Accounts receivable                                                         22               47
       Inventories                                                                 25               12
       Payables                                                                   (50)               5
       Other                                                                     (175)             (97)
------------------------------------------------------------------------------------------------------
     Net cash from operating activities                                           156              223
------------------------------------------------------------------------------------------------------
INVESTING ACTIVITIES
   Plant and equipment expenditures                                              (162)            (125)
   Investment in coke oven battery businesses                                       -             (200)
   Nuclear decommissioning trust funds                                            (18)             (29)
   Other                                                                           (2)               6
------------------------------------------------------------------------------------------------------
     Net cash used for investing activities                                      (182)            (348)
------------------------------------------------------------------------------------------------------
FINANCING ACTIVITIES
   Increase in short-term borrowings                                               49              377
   Redemption of long-term debt                                                   (37)            (169)
   Dividends on common stock                                                      (75)             (75)
------------------------------------------------------------------------------------------------------
     Net cash (used for) from financing activities                                (63)             133
------------------------------------------------------------------------------------------------------
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS                              (89)               8
CASH AND CASH EQUIVALENTS AT BEGINNING OF THE PERIOD                              130               45
------------------------------------------------------------------------------------------------------
CASH AND CASH EQUIVALENTS AT END OF THE PERIOD                                  $  41            $  53
======================================================================================================
SUPPLEMENTARY CASH FLOW INFORMATION
   Interest paid (excluding interest capitalized)                               $  84            $  85
   Income taxes paid                                                               29               20
   New capital lease obligations                                                    9               17

</TABLE>

   See Notes to the Condensed Consolidated Financial Statements (Unaudited).
                                       8
<PAGE>   9


                               DTE ENERGY COMPANY
 CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED)
            (Millions, Except Per Share Amounts; Shares in Thousands)
<TABLE>
<CAPTION>

                                                                                              1999
                                                                                --------------------------------
                                                                                   Shares               Amount
                                                                                --------------------------------
<S>                                                                             <C>                 <C>
COMMON STOCK
   Balance at beginning of year                                                  145,071            $    1,951
   Repurchase and retirement of common stock                                         (26)                   (1)
                                                                                --------             ----------
   Balance at March 31, 1999                                                     145,045            $    1,950
--------------------------------------------------------------------------------------------------------------

RETAINED EARNINGS
   Balance at beginning of year                                                                     $    1,747
   Net income                                                                                              115
   Dividends declared on common stock ($0.515 per share)                                                   (75)
   Repurchase and retirement of common stock                                                                (1)
                                                                                                    ----------
   Balance at March 31, 1999                                                                        $    1,786
--------------------------------------------------------------------------------------------------------------

TOTAL SHAREHOLDERS' EQUITY                                                                          $    3,736
==============================================================================================================
</TABLE>

     See Notes to Condensed Consolidated Financial Statements (Unaudited).

                                        9
<PAGE>   10
 












                                                      
                     [This page intentionally left blank.]













                                       10

<PAGE>   11



                           THE DETROIT EDISON COMPANY
             CONDENSED CONSOLIDATED STATEMENT OF INCOME (UNAUDITED)
                                   (Millions)

<TABLE>
<CAPTION>

                                                                                        Three Months Ended
                                                                                              March 31             
                                                                                -----------------------------------
                                                                                     1999                 1998     
                                                                                ---------------     ---------------

<S>                                                                               <C>                    <C>       
OPERATING REVENUES                                                                         $911                $901
                                                                                           ----                ----

OPERATING EXPENSES
      Fuel and purchased power                                                              206                 208
      Operation and maintenance                                                             237                 223
      Depreciation and amortization                                                         173                 163
      Taxes other than income                                                                71                  70
                                                                                           ----                ----
          Total Operating Expenses                                                          687                 664
                                                                                           ----                ----

OPERATING INCOME                                                                            224                 237
                                                                                           ----                ----

INTEREST EXPENSE AND OTHER
      Interest expense                                                                       68                  68
      Other - net                                                                             3                   5
                                                                                           ----                ----
          Total Interest Expense and Other                                                   71                  73
                                                                                           ----                ----

INCOME BEFORE INCOME TAXES                                                                  153                 164

INCOME TAXES                                                                                 49                  66
                                                                                           ----                ----

NET INCOME                                                                                  104                  98

PREFERRED STOCK DIVIDENDS                                                                     -                   3
                                                                                           ----                ----

NET INCOME AVAILABLE FOR COMMON STOCK                                                      $104                $ 95
                                                                                           ====                ====
</TABLE>

     See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                       11
<PAGE>   12


                           THE DETROIT EDISON COMPANY
                CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)
                 (Millions, Except Per Share Amounts and Shares)

<TABLE>
<CAPTION>

                                                                                    March 31          December 31
                                                                                      1999               1998      
                                                                                --------------      ---------------
<S>                                                                             <C>                    <C>
ASSETS
CURRENT ASSETS
      Cash and cash equivalents                                                        $     3             $     5
      Accounts receivable
           Customer (less allowance for doubtful
                 accounts of $20)                                                          302                 307
           Accrued unbilled revenues                                                       143                 153
           Other                                                                            73                  90
      Inventories (at average cost)
           Fuel                                                                            161                 171
           Materials and supplies                                                          139                 138
      Other                                                                                115                  21
                                                                                       -------             -------
                                                                                           936                 885
                                                                                       -------             -------

INVESTMENTS
      Nuclear decommissioning trust funds                                                  327                 309
      Other                                                                                 42                  74
                                                                                       -------             -------
                                                                                           369                 383
                                                                                       -------             -------

PROPERTY
      Property, plant and equipment                                                     10,694              10,610
      Property under capital leases                                                        240                 242
      Nuclear fuel under capital lease                                                     662                 659
      Construction work in progress                                                        143                 118
                                                                                       -------             -------
                                                                                        11,739              11,629
                                                                                       -------             -------
Less accumulated depreciation and amortization                                           5,293               5,201
                                                                                       -------             -------
                                                                                         6,446               6,428
                                                                                       -------             -------

REGULATORY ASSETS                                                                        3,022               3,091
                                                                                       -------             -------

OTHER ASSETS                                                                               212                 200
                                                                                       -------             -------


TOTAL ASSETS                                                                           $10,985             $10,987
                                                                                       =======             =======
</TABLE>

     See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                       12

<PAGE>   13

<TABLE>
<CAPTION>

                                                                                   March 31           December 31
                                                                                      1999               1998      
                                                                                -------------       --------------
<S>                                                                             <C>                   <C>
LIABILITIES AND SHAREHOLDER'S EQUITY
CURRENT LIABILITIES
      Accounts payable                                                               $    172             $    211
      Accrued interest                                                                     45                   54
      Dividends payable                                                                    80                   80
      Accrued payroll                                                                      85                   86
      Short-term borrowings                                                               280                  231
      Deferred income taxes                                                               100                   60
      Current portion long-term debt                                                      394                  219
      Current portion capital leases                                                      109                  118
      Other                                                                               120                  203
                                                                                     --------             --------
                                                                                        1,385                1,262
                                                                                     --------             --------

OTHER LIABILITIES
      Deferred income taxes                                                             1,800                1,846
      Capital leases                                                                      124                  126
      Regulatory liabilities                                                              322                  294
      Other                                                                               549                  484
                                                                                     --------             --------
                                                                                        2,795                2,750
                                                                                     --------             --------


LONG-TERM DEBT                                                                          3,268                3,462
                                                                                     --------             --------

SHAREHOLDER'S EQUITY
      Common stock, $10 par value, 400,000,000 shares
           authorized, 145,119,875 issued and outstanding                               1,451                1,451
      Premium on common stock                                                             548                  548
      Common stock expense                                                                (48)                 (48)
      Retained earnings                                                                 1,586                1,562
                                                                                     --------             --------
                                                                                        3,537                3,513
                                                                                     --------             --------

CONTINGENCIES (NOTE 5)

TOTAL LIABILITIES AND SHAREHOLDER'S EQUITY                                           $ 10,985             $ 10,987
                                                                                     ========             ========
</TABLE>


      See Notes to Condensed Consolidated Financial Statements (Unaudited).

                                       13

<PAGE>   14
                    
                           THE DETROIT EDISON COMPANY
           CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)
                                   (Millions)
<TABLE>
<CAPTION>

                                                                                         Three Months Ended
                                                                                               March 31
                                                                                    -----------------------------
                                                                                      1999                 1998
                                                                                    -----------------------------
<S>                                                                                  <C>                   <C>
OPERATING ACTIVITIES
   Net Income                                                                         $ 104                $  98
   Adjustments to reconcile net income to net cash from operating activities:                         
     Depreciation and amortization                                                      173                  163
     Other                                                                               65                   (1)
     Changes in current assets and liabilities:                                                       
       Accounts receivable                                                               33                   54
       Inventories                                                                       16                    2
       Payables                                                                         (43)                  22
       Other                                                                           (178)                (108)
----------------------------------------------------------------------------------------------------------------
     Net cash from operating activities                                                 170                  230
----------------------------------------------------------------------------------------------------------------
INVESTING ACTIVITIES                                                                                  
   Plant and equipment expenditures                                                    (125)                (118)
   Nuclear decommissioning trust funds                                                  (18)                 (29)
   Other                                                                                 21                   (3)
----------------------------------------------------------------------------------------------------------------
     Net cash used for investing activities                                            (122)                (150)
----------------------------------------------------------------------------------------------------------------
FINANCING ACTIVITIES                                                                                  
   Increase in short-term borrowings                                                     49                  164
   Redemption of long-term debt                                                         (19)                (169)
   Dividends on common stock and preferred stock                                        (80)                 (83)
----------------------------------------------------------------------------------------------------------------
     Net cash used for financing activities                                             (50)                 (88)
----------------------------------------------------------------------------------------------------------------
NET DECREASE IN CASH AND CASH EQUIVALENTS                                                (2)                  (8)
CASH AND CASH EQUIVALENTS AT BEGINNING OF THE PERIOD                                      5                   15
----------------------------------------------------------------------------------------------------------------
CASH AND CASH EQUIVALENTS AT END OF THE PERIOD                                        $   3                $   7
================================================================================================================
SUPPLEMENTARY CASH FLOW INFORMATION                                                                   
   Interest paid (excluding interest capitalized)                                     $  78                $  79
   Income taxes paid                                                                     26                   26
   New capital lease obligations                                                          9                   17
</TABLE>

                                                                                
      See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                       14

<PAGE>   15
                           THE DETROIT EDISON COMPANY
 CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDER'S EQUITY (UNAUDITED)
            (Millions, Except Per Share Amounts; Shares in Thousands)
<TABLE>
<CAPTION>

                                                                                              1999
                                                                                ----------------------------------
                                                                                   Shares               Amount
                                                                                ----------------------------------
<S>                                                                             <C>                 <C>
COMMON STOCK
   Balance at beginning of year                                                       145,120       $        1,451
                                                                                      -------       --------------
   Balance at March 31, 1999                                                          145,120       $        1,451
------------------------------------------------------------------------------------------------------------------

PREMIUM ON COMMON STOCK
   Balance at beginning of year                                                                     $          548
                                                                                                    --------------
   Balance at March 31, 1999                                                                        $          548
------------------------------------------------------------------------------------------------------------------

COMMON STOCK EXPENSE
   Balance at beginning of year                                                                     $          (48)
                                                                                                    --------------
   Balance at March 31, 1999                                                                        $          (48)
------------------------------------------------------------------------------------------------------------------

RETAINED EARNINGS
   Balance at beginning of year                                                                     $        1,562
   Net income                                                                                                  104
   Dividends declared on common stock ($0.55 per share)                                                        (80)
                                                                                                    --------------
   Balance at March 31, 1999                                                                        $        1,586
------------------------------------------------------------------------------------------------------------------

TOTAL SHAREHOLDER'S EQUITY                                                                          $        3,537
==================================================================================================================
</TABLE>


      See Notes to Condensed Consolidated Financial Statements (Unaudited).
                                       15


<PAGE>   16
                    NOTES TO CONDENSED CONSOLIDATED FINANCIAL
                             STATEMENTS (UNAUDITED)
                DTE ENERGY COMPANY AND THE DETROIT EDISON COMPANY

NOTE 1 - ANNUAL REPORT NOTES

These condensed consolidated financial statements (unaudited) should be read in
conjunction with the Annual Report Notes. The Notes contained herein update and
supplement matters discussed in the Annual Report Notes.

The preparation of the financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

The condensed consolidated financial statements are unaudited, but in the
opinion of the Company and Detroit Edison, with respect to its own financial
statements, include all adjustments necessary for a fair statement of the
results for the interim periods. Financial results for this interim period are
not necessarily indicative of results that may be expected for any other interim
period or for the fiscal year.

NOTE 2 - REGULATORY MATTERS

On March 8, 1999 the MPSC issued orders clarifying several issues related to
Direct Access. Among other things, the MPSC ruled that:

-    Detroit Edison must reduce rates effective January 1, 2000 by $14.8 million
     to reflect the expiration of the 2-year extraordinary storm damage
     surcharge.
-    Detroit Edison will be required to use its "best efforts" to provide
     standby service to Direct Access customers. Best efforts means that Detroit
     Edison must make the service available to Direct Access customers who
     request it, but Detroit Edison does not have to build or purchase new
     capacity or interrupt firm customers to provide the service.
-    Standby service is to be priced at Detroit Edison's top incremental cost
     plus 1 cent. The service must be contracted for and scheduled in advance.
     There are no reservation charges or monthly fees.
-    Detroit Edison should move expeditiously on the 90 MW of Direct Access
     pilot program, but the larger 675 MW block of Direct Access power should
     not become effective until the third quarter of 1999.
-    DTE Energy affiliates may not participate in Direct Access until Detroit
     Edison files a code of conduct with the MPSC. On April 12, 1999, Detroit
     Edison filed a code of conduct with the MPSC.

Several parties have filed petitions for rehearing or clarification of some of
the March 8, 1999 orders; the MPSC has not ruled on these petitions. ABATE and
the Michigan Attorney General have also filed for leave to appeal the MPSC's
decision authorizing accelerated

                                       16

<PAGE>   17

amortization of Detroit Edison's Fermi 2 assets, to the Michigan Court of
Appeals. Detroit Edison is unable to determine the timing or outcome of these
proceedings.

NOTE 3 - SHORT-TERM CREDIT ARRANGEMENTS AND BORROWINGS

At March 31, 1999, Detroit Edison had total short-term credit arrangements of
approximately $690 million under which $280 million of commercial paper was
outstanding.

At March 31, 1999, DTE Capital had short-term credit arrangements of $400
million, backed by a Support Agreement from the Company, under which no amounts
were outstanding.

In February 1999, the Company entered into a $40 million Support Agreement with
DTE Capital for the purpose of DTE Capital's credit enhancing activities on
behalf of DTE Energy affiliates.

NOTE 4 - SEGMENT AND RELATED INFORMATION

Effective December 31, 1998, the Company adopted Statement of Financial
Accounting Standards No. 131, "Disclosure about Segments of an Enterprise and
Related Information." The Company's reportable business segment is its electric
utility, Detroit Edison, which is engaged in the generation, purchase,
transmission, distribution and sale of electric energy in a 7,600 square mile
area in Southeastern Michigan. All other includes non-regulated energy-related
businesses and services, which develop and manage electricity and other
energy-related projects, and engage in domestic energy trading and marketing.
Inter-segment revenues are not material. Financial data for business segments
are as follows:

<TABLE>
<CAPTION>

-----------------------------------------------------------------------------------------------------------------
                                                                         Reconciliations
                                            Electric          All              and
                                             Utility         Other         Eliminations         Consolidated
-----------------------------------------------------------------------------------------------------------------
  Three Months Ended March 31, 1999                              (Millions)

<S>                                         <C>              <C>            <C>                   <C>        
Operating revenues                          $       911      $      113     $       -             $     1,024
Net income                                          104              14            (3)                    115

-----------------------------------------------------------------------------------------------------------------
  Three Months Ended March 31, 1998                             (Millions)

Operating revenues                         $       901       $       44     $       -             $       945
Net income                                         95                 9             -                     104

-----------------------------------------------------------------------------------------------------------------
</TABLE>

NOTE 5- CONTINGENCIES

LEGAL PROCEEDINGS - Detroit Edison and plaintiffs in a class action pending in
the Circuit Court for Wayne County, Michigan (Gilford, et al v. Detroit Edison),
as well as plaintiffs in two other pending actions which make class claims
(Sanchez, et al v. Detroit 

                                       17

<PAGE>   18

Edison, Circuit Court for Wayne County, Michigan; and Frazier v. Detroit Edison,
United States District Court, Eastern District of Michigan), are preparing for
binding arbitration to settle these matters. A July 1998 Consent Judgement has
received preliminary Court approval. A Fairness Hearing with respect to the
terms of the settlement was held in August 1998, and no objections to the
settlement were raised. A second Fairness Hearing is contemplated following the
results of the arbitration. The settlement agreement provides that Detroit
Edison's monetary liability is to be no less than $17.5 million and no greater
than $65 million after the conclusion of all related proceedings. Detroit Edison
has accrued an amount considered to be probable.

                           --------------------------

This Quarterly Report on Form 10-Q, including the report of Deloitte & Touche
LLP (on page 19) will automatically be incorporated by reference in the
Prospectuses constituting part of the Registration Statements on Form S-3
(Registration Nos. 33-53207, 33-64296 and 333-65765) of The Detroit Edison
Company and Form S-8 (Registration No. 333-00023) and Form S-3 (Registration No.
33-57545) of DTE Energy Company, filed under the Securities Act of 1933. Such
report of Deloitte & Touche LLP, however, is not a "report" or "part of the
Registration Statement" within the meaning of Sections 7 and 11 of the
Securities Act of 1933 and the liability provisions of Section 11(a) of such Act
do not apply.

                                       18

<PAGE>   19


INDEPENDENT ACCOUNTANTS' REPORT

To the Board of Directors and Shareholders of DTE Energy Company and
       The Detroit Edison Company

We have reviewed the accompanying condensed consolidated balance sheets of DTE
Energy Company and subsidiaries and of The Detroit Edison Company and
subsidiaries as of March 31, 1999, and the related condensed consolidated
statements of income and cash flows for the three-month periods ended March 31,
1999 and 1998, and the condensed consolidated statements of changes in
shareholders' equity for the three-month period ended March 31, 1999. These
financial statements are the responsibility of DTE Energy Company's management
and of The Detroit Edison Company's management.

We conducted our reviews in accordance with standards established by the
American Institute of Certified Public Accountants. A review of interim
financial information consists principally of applying analytical procedures to
financial data and of making inquiries of persons responsible for financial and
accounting matters. It is substantially less in scope than an audit conducted in
accordance with generally accepted auditing standards, the objective of which is
the expression of an opinion regarding the financial statements taken as a
whole. Accordingly, we do not express such an opinion.

Based on our reviews, we are not aware of any material modifications that should
be made to such condensed consolidated financial statements for them to be in
conformity with generally accepted accounting principles.

We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheets of DTE Energy Company and
subsidiaries and of The Detroit Edison Company and subsidiaries as of December
31, 1998, and the related consolidated statements of income, changes in
shareholders' equity, and cash flows for the year then ended (not presented
herein); and in our report dated January 27, 1999, we expressed an unqualified
opinion on those consolidated financial statements. In our opinion, the
information set forth in the accompanying condensed consolidated balance sheets
as of December 31, 1998 is fairly stated, in all material respects, in relation
to the consolidated balance sheets from which it has been derived.




DELOITTE & TOUCHE LLP

Detroit, Michigan
April 28, 1999

                                       19
<PAGE>   20


ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS.

This analysis for the three months ended March 31, 1999, as compared to the same
period in 1998, should be read in conjunction with the condensed consolidated
financial statements (unaudited), the accompanying Notes, and the Annual Report
Notes.

Detroit Edison is the principal operating subsidiary of the Company and, as
such, unless otherwise identified, this discussion explains material changes in
results of operations of both the Company and Detroit Edison and identifies
recent trends and events affecting both the Company and Detroit Edison.

ELECTRIC INDUSTRY RESTRUCTURING

MICHIGAN PUBLIC SERVICE COMMISSION

On March 8, 1999, the MPSC initiated new dockets to 1) evaluate the need to
expedite the supplier licensing program as an alternative for suppliers to
obtain local franchises and Certificates of Public Convenience and Necessity
from the MPSC, and 2) to establish guidelines for transactions between
affiliates. The MPSC also set for hearing the ABATE complaint that had been
filed in August 1997 alleging that Detroit Edison's earnings are excessive. A
procedural schedule was set whereby an order could be issued in the first
quarter of 2000.

On March 31, 1999, Detroit Edison filed an application with the MPSC for true-up
of its stranded costs, including Direct Access implementation costs. Detroit
Edison requested that the proceedings be conducted in two phases. The first
phase should involve only a prudency review of incurred implementation costs,
approval of forecasted spending and allocation of implementation costs among
customers and the timing of cost recovery. The second phase should be structured
to address the remaining true-up issues; including the appropriate stranded cost
balances, the appropriate level of the transition charge, the establishment of
the mechanics of the true-up and stranded cost recovery processes, and to
address policy issues such as Detroit Edison's billing and metering rights and
obligations in a restructured electric utility industry. Expedited proceedings
were requested for both phases, and a procedural schedule will be determined in
May 1999.

FEDERAL ENERGY REGULATORY COMMISSION

On February 15, 1999, Detroit Edison submitted a request to the FERC for
authorization to use certain plant accounts to recognize the impairment loss of
Detroit Edison's Fermi 2 plant and associated assets in accordance with
generally accepted accounting principles. On March 26, 1999, the Michigan
Attorney General filed a protest with the FERC and requested that the FERC set
the issue for hearing. On April 12, 1999, Detroit Edison filed its response with
the FERC, requesting that the FERC reject the Michigan Attorney General's
protest as an improper collateral attack on MPSC orders. The FERC has not made a
ruling on these matters.

                                       20
<PAGE>   21

LIQUIDITY AND CAPITAL RESOURCES

CASH FROM OPERATING ACTIVITIES

Net cash from operating activities decreased in 1999 due primarily to decreases
in accounts payable and changes in other current assets and liabilities.

CASH USED FOR INVESTING ACTIVITIES

Net cash used for investing was lower due primarily to decreased non-regulated
investments and contributions to the nuclear decommissioning trust funds.

CASH (USED FOR) FROM FINANCING ACTIVITIES

Net cash used for financing was $63 million for the three months ended March 31,
1999 compared to net cash from financing of $133 million for the same period
during 1998. This fluctuation was primarily due to decreased DTE Capital
short-term borrowings, partially offset by redemptions of long-term debt.

YEAR 2000

The Company and Detroit Edison have been involved in an enterprise-wide program
to address Year 2000 issues. A program office was established in mid-1997 to
implement a rigorous plan to address the impact of Year 2000 on hardware and
software systems, embedded systems (which include microprocessors used in the
production and control of electric power), and critical service providers. The
emphasis has been on mission critical systems that support core business
activities or processes. Core business activities/processes include safety,
environmental and regulatory compliance, product production and delivery,
revenue collection, employee and supplier payment and financial asset
management.

The plan for addressing Year 2000 is divided into several phases including
raising general awareness of Year 2000 throughout the Company and Detroit
Edison; maintaining an inventory of systems and devices; performing an
assessment of inventoried systems and devices; performing compliance testing of
suspect systems and devices; remediation of non-compliant systems and devices
through replacement, repair, retirement, or identifying an acceptable work
around; testing and remediation of systems and devices in an integrated
environment and preparing business continuity plans.

Inventory, assessment and compliance testing phases have been completed for
known systems and devices. The remediation phase is approximately 91% complete
and is expected to be fully complete by August 1999 for mission critical assets
and supporting assets. Integration planning, including the mapping of critical
business processes, is near completion for Detroit Edison. Integration testing
and contingency planning is approximately 18% complete and is expected to be
fully complete by October 1999.

To support the program phases, the program office has been working with major
utility industry associations and organizations, customers and vendors to gather
and share 

                                       21
<PAGE>   22

information on Year 2000 issues. The program office has contacted vendors
critical to Company operations to determine their progress on Year 2000.

To further assist in identifying potential problems, tests of generating
facilities have been conducted by advancing control systems dates to the Year
2000. Results of these tests have shown that the generating facilities operated
successfully in this induced "millennium mode." Exercises were conducted on
December 31, 1998 and January 1, 1999 to assess the ability to reach employees
and the regional security centers of the East Central Area Reliability Group
through various communication channels. The exercised communication channels
operated properly. The business continuity program will provide opportunities to
conduct similar exercises on other systems in advance of the Year 2000. Similar
analysis has not been completed for other affiliates.

In the event that an unknown Year 2000 condition adversely affects service to
customers or an internal business process, contingency and business continuity
plans and procedures are being developed to provide rapid restoration to normal
conditions. The Company and Detroit Edison have always maintained a
comprehensive operational emergency response plan. The business continuity
function of the Year 2000 program will supplement the existing emergency plan to
include Year 2000 specific events. A Year 2000 emergency response office will be
fully operational by November 1999 to manage and coordinate operations,
including mobilization of all employees as necessary, during the transition to
the new millennium.

The Company and Detroit Edison believe that with all Year 2000 modifications,
business continuity and emergency management plans in place, the Year 2000 will
not have a material effect on their financial position, liquidity and results of
operations. Despite all efforts, there can be no assurances that Year 2000
issues can be totally eliminated. Results of modifications and testing done
during the fourth quarter of 1998 have demonstrated that Detroit Edison should
be able to maintain normal operating conditions into the Year 2000, although
there may be isolated electric service interruptions. Detroit Edison's internal
business systems may be affected by a Year 2000 related failure that could
temporarily interrupt the ability to communicate with customers, collect
revenue, or complete cash transactions. In addition, no assurances can be given
that the systems of vendors, interconnected utilities and customers will not
result in Year 2000 problems.

The Company estimates that Year 2000 costs will approximate $80 million
with $57 million expended through March 31, 1999. Operating cash flow is
expected to be sufficient to pay Year 2000 modification costs with no material
impact on operating results or cash flows.

RESULTS OF OPERATIONS

For the three months ended March 31, 1999, the Company's net income was $115
million, or $0.79 per common share as compared to $104 million, or $0.72 per
common share earned in the three months ended March 31, 1998.

                                       22
<PAGE>   23
The 1999 three-month earnings were higher than 1998 due to increased earnings
resulting from increased utilization of tax credits generated by non-regulated
businesses and increased electric system sales due to higher demand resulting
from colder weather.

OPERATING REVENUES

Increases in operating revenues were due primarily to higher non-regulated
subsidiary revenues, higher system and interconnection sales due to increased
heating load and usage, partially offset by decreases in total system revenues
driven mainly by lower rates.

Detroit Edison kWh sales increased (decreased) as compared to the prior year as
follows:

                                                                    Three
                                                                    Months
                                                                    ------
       Residential                                                     5.2  %
       Commercial                                                      3.8
       Industrial                                                      0.4
       Other (includes primarily sales for resale)                    11.2
           Total System                                                3.6
       Sales between utilities                                       (21.5)
           Total                                                       0.9

The increase in residential sales resulted from more heating related demand and
growth in the customer base. Commercial sales increased for the three-month
period, reflecting more heating related demand and a continuation
of favorable economic conditions. Sales to other customers increased reflecting
increased demand from sales for resale customers. Sales between utilities
decreased due to less power available for sale.

OPERATING EXPENSES

FUEL AND PURCHASED POWER

Net system output and average fuel and purchased power unit costs were as
follows:

                                                         Three Months
                                                   -----------------------
                                                      1999          1998
                                                      ----          ----
                                                      (Thousands of MWh)
       Power plant generation
           Fossil                                     10,474        11,043
           Nuclear                                     2,399         1,983
       Purchased power                                 1,331           966
                                                   ---------     ---------
       Net system output                              14,024        13,992
                                                   =========     =========

       Average unit cost ($/MWh)                   $   13.49     $   13.54
                                                   =========     =========

                                       23
<PAGE>   24

Fuel and purchased power expense increased for the Company due primarily to new
non-regulated subsidiary expenses. Detroit Edison fuel and purchased power
expense decreased due to an 18.3% reduction in steam heating sales and lower
average unit costs resulting from a decrease in the cost of nuclear fuel,
partially offset by higher net system output and increased purchases of higher
cost power to replace lower cost system generation as a result of plant outages.

OPERATION AND MAINTENANCE

Operation and maintenance expense for the Company increased due primarily to new
non-regulated subsidiary operation expense ($44 million), higher expenses
related to the timing of the periodic plant outages ($8.3 million), higher
expenses for Year 2000 testing and remediation ($7.9 million), higher expenses
for information systems ($2.4 million), partially offset by lower nuclear
generation expenses ($5.9 million).

INCOME TAXES

Income tax expense for the Company decreased in 1999 due primarily to increased
utilization of alternate fuels credits generated from non-regulated businesses.
Alternate fuels credits phase out beginning in 2003 through 2007.

FORWARD-LOOKING STATEMENTS

Certain information presented herein is based on the expectations of the Company
and Detroit Edison, and, as such, is forward-looking. The Private Securities
Litigation Reform Act of 1995 encourages reporting companies to provide analyses
and estimates of future prospects and also permits reporting companies to point
out that actual results may differ from those anticipated.

Actual results for the Company and Detroit Edison may differ from those expected
due to a number of variables including, but not limited to, weather, actual
sales, the effects of competition and the phased-in implementation of Direct
Access, the implementation of utility restructuring in Michigan (which involves
pending regulatory proceedings, possible legislative activity, and the recovery
of stranded costs), environmental (including proposed regulations to limit
nitrogen oxide emissions) and nuclear requirements, the impact of FERC
proceedings and regulations, the success of non-regulated lines of business and
the timely completion of Year 2000 modifications. While the Company and Detroit
Edison believe that estimates given accurately measure the expected outcome,
actual results could vary materially due to the variables mentioned as well as
others. This discussion contains a Year 2000 readiness disclosure.

                                       24

<PAGE>   25


                        QUARTERLY REPORT ON FORM 10-Q FOR
                           THE DETROIT EDISON COMPANY

                         PART I - FINANCIAL INFORMATION

ITEM 1 - CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED).

See pages 11 through 15.

ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS.

See the Company's and Detroit Edison's "Item 2 - Management's Discussion and
Analysis of Financial Condition and Results of Operations," which is
incorporated herein by this reference.


                           PART II - OTHER INFORMATION

ITEM 1 - LEGAL PROCEEDINGS.

In a lawsuit filed in January 1999 in the Circuit Court for Wayne County
Michigan (Cook, et al v. Detroit Edison), a number of individual plaintiffs have
claimed employment-related sex, gender and race discrimination, as well as
harassment. The suit seeks certification as a class action. Detroit Edison
believes the claims are without merit.

As discussed in "Part I, Item 1 - Business" in the Company's Annual Report, in
1998 Detroit Edison attempted to restart the Conners Creek Power Plant (in
reserve status from 1988 to 1998) to meet expected high summer demand for
electricity. Although Detroit Edison believed that the plant complied with all
applicable environmental requirements, several regulatory agencies contended
that Detroit Edison was required to obtain a series of new permits prior to
plant operation and issued notices of violation. In August 1998, Detroit Edison
filed suit seeking a review of the agencies' determinations. On January 11,
1999, the Department of Justice (DOJ) on behalf of the EPA sent Detroit Edison a
Demand Letter requiring the payment of $2.3 million in civil penalties and an
unconditional commitment to abandon the use of the facility as a coal plant.
Detroit Edison rejected the demand and on January 15, 1999 the DOJ/EPA filed
suit in United States District Court for the Eastern District of Michigan. An
interim order issued on March 11, 1999 required Detroit Edison to convert the
plant from a coal to a natural gas fired facility. The ruling is the preliminary
outcome of the lawsuit filed by Detroit Edison seeking resolution of the
regulatory issues challenging any use of the plant. The operation of the plant
by early summer 1999 was found to be necessary to protect the health, safety and
welfare of the people of the Detroit metropolitan area. Resolution of the
remaining issues is proceeding. The cost of the conversion is estimated at $11
million. It is impossible to predict what impact, if any, the final outcome of
this will have upon Detroit Edison.

                                       25

<PAGE>   26


ITEM 5 - OTHER INFORMATION.

On March 31, 1999, Detroit Edison filed for reconciliation of its MPSC
jurisdictional 1998 PSCR revenues and expenses. Detroit Edison indicated that an
under recovery of $45.5 million, including interest, existed, and when offset by
a Fermi 2 performance standard credit of $33.7 million, a net amount of $11.8
million remains to be collected from PSCR customers.

                                       26
<PAGE>   27
                                   
                       QUARTERLY REPORTS ON FORM 10-Q FOR
                DTE ENERGY COMPANY AND THE DETROIT EDISON COMPANY

ITEM 6 - EXHIBITS AND REPORTS ON FORM 8-K.

         (a)  Exhibits

                 (i)      Exhibits filed herewith.

        Exhibit
        Number
        ------

         3-11      Bylaws of DTE Energy Company, as amended through 
                   April 28,1999.

         3-12      Bylaws of The Detroit Edison Company, as amended through
                   April 28, 1999.

        4-202      $40,000,000  Support  Agreement  dated as of 
                   February 24, 1999 between DTE Energy  Company and DTE Capital
                   Corporation.

       *10-32      1999 Shareholder Value Improvement Plan-A Measures.

       *10-33      1999 Executive Incentive Plan Measures.

        11-15   -  DTE Energy Company Basic and Diluted Earnings Per Share of 
                   Common Stock.

        12-16   -  DTE Energy Company Computation of Ratio of Earnings to Fixed
                   Charges.

        12-17   -  The Detroit Edison Company Computation of Ratio of Earnings
                   to Fixed Charges.

        15-10   -  Awareness Letter of Deloitte & Touche LLP regarding their
                   report dated April 28, 1999.

        27-27   -  Financial Data Schedule for the period ended March 31, 1999
                   for DTE Energy Company.

        27-28   -  Financial Data Schedule for the period ended March 31, 1999 
                   for The Detroit Edison Company.


     (ii)     Exhibits incorporated herein by reference.

         3(a)   -   Amended and Restated  Articles of  Incorporation  of DTE 
                    Energy  Company,  dated December 13, 1995.  (Exhibit 3-5 to
                    Form 10-Q for quarter ended September 30, 1997)

                                       27

        
<PAGE>   28
         3(b)   -   Certificate of Designation of Series A Junior
                    Participating Preferred Stock of DTE Energy Company.
                    Exhibit 3-6 to Form 10-Q for quarter ended September
                    30, 1997.)

         3(c)   -   Restated Articles of Incorporation of Detroit Edison,
                    as filed December 10, 1991 with the State of Michigan,
                    Department of Commerce - Corporation and Securities
                    Bureau (Exhibit 4-117 to Form 10-Q for quarter ended
                    March 31, 1993).

         3(d)   -   Certificate containing resolution of the Detroit
                    Edison Board of as filed February 22, 1993 with the
                    State of Michigan, Department of Commerce - Corporation
                    and Securities Bureau (Exhibit 4-134 to Form 10-Q for
                    quarter ended March 31, 1993).

         3(e)   -   Certificate containing resolution of the Detroit
                    Edison Board of Directors establishing the Cumulative
                    Preferred Stock, 7.74% Series, as filed April 21, 1993
                    with the State of Michigan, Department of Commerce -
                    Corporation and Securities Bureau (Exhibit 4-140 to
                    Form 10-Q for quarter ended March 31, 1993).

         3(f)   -   Rights Agreement, dated as of September 23, 1997, by
                    and between DTE Energy Company and The Detroit Edison
                    Company, as Rights Agent (Exhibit 4-1 to DTE Energy
                    Company Current Report on Form 8-K, dated September 23,
                    1997).

         3(g)   -   Agreement and Plan of Exchange (Exhibit 1(2) to DTE
                    Energy Form 8-B filed January 2, 1996, File No.
                    1-11607).

         4(a)   -   Mortgage and Deed of Trust, dated as of October 1,
                    1924, between Detroit Edison (File No. 1-2198) and
                    Bankers Trust Company as Trustee (Exhibit B-1 to
                    Registration No. 2-1630) and indentures supplemental
                    thereto, dated as of dates indicated below, and filed
                    as exhibits to the filings as set forth below:

<TABLE>
                    <S>                                  <C>
                    September 1, 1947                    Exhibit B-20 to Registration No. 2-7136
                    October 1, 1968                      Exhibit 2-B-33 to Registration No. 2-30096
                    November 15, 1971                    Exhibit 2-B-38 to Registration No. 2-42160
                    January 15, 1973                     Exhibit 2-B-39 to Registration No. 2-46595
                    June 1, 1978                         Exhibit 2-B-51 to Registration No. 2-61643
                    June 30, 1982                        Exhibit 4-30 to Registration No. 2-78941
                    August 15, 1982                      Exhibit 4-32 to Registration No. 2-79674
                    October 15, 1985                     Exhibit 4-170 to Form 10-K for
                                                           year ended December 31, 1994
                    November 30, 1987                    Exhibit 4-139 to Form 10-K for
                                                           year ended December 31, 1992
                    July 15, 1989                        Exhibit 4-171 to Form 10-K for
                                                           year ended December 31, 1994
</TABLE>

                                       28
<PAGE>   29
<TABLE>

                    <S>                                  <C> 
                    December 1, 1989                     Exhibit 4-172 to Form 10-K for
                                                           year ended December 31, 1994
                    February 15, 1990                    Exhibit 4-173 to Form 10-K for
                                                           year ended December 31, 1994
                    April 1, 1991                        Exhibit  4-15 to Form 10-K for year  ended 
                                                           December  31, 1996
                    May 1, 1991                          Exhibit  4-178 to Form 10-K for year ended 
                                                           December  31, 1996
                    May 15, 1991                         Exhibit  4-179 to Form 10-K for year ended 
                                                           December  31, 1996
                    September 1, 1991                    Exhibit  4-180 to Form 10-K for year ended  
                                                           December  31, 1996
                    November 1, 1991                     Exhibit  4-181 to Form 10-K for year ended  
                                                           December  31, 1996
                    January 15, 1992                     Exhibit  4-182 to Form 10-K for year ended  
                                                           December  31, 1996
                    February 29, 1992                    Exhibit  4-187 to Form 10-Q for  quarter
                                                           ended March 31, 1998
                    April 15, 1992                       Exhibit  4-188 to Form 10-Q for  quarter
                                                           ended March 31, 1998
                    July 15, 1992                        Exhibit  4-189 to Form 10-Q for  quarter
                                                           ended March 31, 1998
                    July 31, 1992                        Exhibit  4-190 to Form 10-Q for  quarter
                                                           ended March 31, 1998
                    November 30, 1992                    Exhibit 4-130 to Registration  No. 33-56496
                    January 1, 1993                      Exhibit 4-131 to Registration No. 33-56496
                    March 1, 1993                        Exhibit  4-191 to Form 10-Q for  quarter
                                                           ended March 31, 1998
                    March 15, 1993                       Exhibit  4-192 to Form 10-Q for  quarter
                                                           ended March 31, 1998
                    April 1, 1993                        Exhibit  4-143 to Form 10-Q for  quarter
                                                           ended March 31, 1993
                    April 26, 1993                       Exhibit  4-144 to Form 10-Q for  quarter
                                                           ended March 31, 1993
                    May 31, 1993                         Exhibit 4-148 to Registration No. 33-64296
                    June 30, 1993                        Exhibit  4-149 to Form 10-Q for  quarter
                                                           ended  June 30, 1993 (1993 Series AP)
                    June 30, 1993                        Exhibit  4-150 to Form 10-Q for  quarter
                                                           ended  June 30, 1993 (1993 Series H)
                    September 15, 1993                   Exhibit  4-158 to Form 10-Q for quarter
                                                           ended  September 30, 1993
                    March 1, 1994                        Exhibit 4-163 to Registration No. 33-53207
                    June 15, 1994                        Exhibit  4-166 to Form 10-Q for  quarter
                                                           ended  June 30, 1994
                    August 15, 1994                      Exhibit  4-168 to Form 10-Q for quarter
                                                           ended  September 30, 1994
                    December 1, 1994                     Exhibit 4-169 to Form 10-K for
</TABLE>
                                       29

<PAGE>   30
<TABLE>
                    <S>                                  <C> 
                                                           year ended December 31, 1994
                    August 1, 1995                       Exhibit  4-174 to Form 10-Q for quarter
                                                           ended  September 30, 1995

</TABLE>
         4(b) -  Collateral Trust Indenture (notes), dated as of June 30, 1993
                 (Exhibit 4-152 to Registration No. 33-50325).

         4(c) -  First Supplemental Note Indenture, dated as of June 30, 1993
                 (Exhibit 4-153 to Registration No. 33-50325).

         4(d) -  Second Supplemental Note Indenture, dated as of September
                 15, 1993 (Exhibit 4-159 to Form 10-Q for quarter ended
                 September 30, 1993).

         4(e) -  First Amendment, dated as of August 15, 1996, to Second
                 Supplemental Note Indenture (Exhibit 4-17 to Form 10-Q for
                 quarter ended September 30, 1996).

         4(f) -  Third Supplemental Note Indenture, dated as of August 15,
                 1994 (Exhibit 4-169 to Form 10-Q for quarter ended September
                 30, 1994).

         4(g) -  First Amendment, dated as of December 12, 1995, to Third
                 Supplemental Note Indenture, dated as of August 15, 1994
                 (Exhibit 4-12 to Registration No. 333-00023).

         4(h) -  Fourth Supplemental Note Indenture, dated as of August 15,
                 1995 (Exhibit 4-175 to Detroit Edison Form 10-Q for quarter
                 ended September 30, 1995).

         4(i) -  Fifth Supplemental Note Indenture, dated as of February 1,
                 1996 (Exhibit 4-14 to Form 10-K for year ended December 31,
                 1996).

         4(j) -  Sixth Supplemental Note Indenture, dated as of May 1,
                 1998, between Detroit Edison and Bankers Trust Company, as
                 Trustee, creating the 7.54% Quarterly Income Debt
                 Securities ("QUIDS"), including form of QUIDS. (Exhibit
                 4-193 to form 10-Q for quarter ended June 30, 1998.)

         4(k  -  Seventh Supplemental Note Indenture, dated as of October
                 15, 1998, between Detroit Edison and Bankers Trust
                 Company, as Trustee, creating the 7.375% QUIDS, including
                 form of QUIDS. (Exhibit 4-198 to Form 10-K for year ended
                 December 31, 1998.)

         4(l) -  Standby Note Purchase Credit Facility, dated as of
                 August 17, 1994, among The Detroit Edison Company,
                 Barclays Bank PLC, as Bank and Administrative Agent, Bank
                 of America, The Bank of New York, The Fuji Bank Limited,
                 The Long-Term Credit Bank of Japan, LTD, Union Bank and
                 Citicorp Securities, Inc. and First Chicago Capital
                 Markets, Inc. as 



                                       30
<PAGE>   31
                 Remarketing Agents (Exhibit 99-18 to Form
                 10-Q for quarter ended September 30, 1994).

         4-(m) - $60,000,000 Support Agreement dated as of January
                 21, 1998 between DTE Energy Company and DTE Capital
                 Corporation. (Exhibit 4-183 to Form 10-K for year ended
                 December 31, 1997.)

         4-(n) - $100,000,000 Support Agreement, dated as of June 16,
                 1998, between DTE Energy Company and DTE Capital
                 Corporation. (Exhibit 4-194 to Form 10-Q for quarter ended
                 June 30, 1998.)

         4-(o) - $300,000,000 Support Agreement, dated as of November 18,
                 1998, between DTE Energy and DTE Capital Corporation.
                 (Exhibit 4-199 to Form 10-K for year ended December 31,
                 1998.)

         4-(p) - $400,000,000 Support Agreement, dated as of January 19,
                 1999, between DTE Energy Company and DTE Capital
                 Corporation. (Exhibit 4-201 to form 10-K for year ended
                 December 31, 1998.)

         4-(q) - Indenture, dated as of June 15, 1998, between DTE
                 Capital Corporation and The Bank of New York, as Trustee.
                 (Exhibit 4-196 to Form 10-Q for quarter ended June 30,
                 1998.)

         4-(r) - First Supplemental Indenture, dated as of June 15, 1998,
                 between DTE Capital Corporation and The Bank of New York,
                 as Trustee, creating the $100,000,000 Remarketed Notes,
                 Series A due 2038, including form of Note. (Exhibit 4-197
                 to Form 10-Q for quarter ended June 30, 1998.)

         4-(s) - Second Supplemental Indenture, dated as of November 1,
                 1998, between DTE Capital Corporation and The Bank of New
                 York, as Trustee, creating the $300,000,000 Remarketed
                 Notes, 1998 Series B, including form of Note. (Exhibit
                 4-200 to Form 10-K for year ended December 31, 1998.)

         4(t)  - Second Amended and Restated Credit Agreement, Dated as
                 of January 19, 1999 among DTE Capital Corporation, the
                 Initial Lenders, Citibank, N.A., as Agent, and ABN AMRO
                 Bank N.V., Barclays Bank PLC, Bayerische Landesbank
                 Giruzertrale, Cayman Islands Branch, Comerica Bank, Den
                 Daske Bank Aktieselskab and The First National Bank of
                 Chicago, as Co-Agents, and Salomon Smith Barney Inc., as
                 Arranger. (Exhibit 99-28 to Form 10-K for year ended
                 December 31, 1998.)

         *10-(a) The Detroit Edison Company  Executive  Incentive Plan (October
                 1997). (Exhibit  10-13* to Form 10-K for the year ended
                 December 31, 1997.)

                                       31

<PAGE>   32
         10-(b)  Detroit Edison Company  Shareholder  Value Improvement  Plan-A
                 (October 1997).  (Exhibit 10 15* to Form 10-K for year ended
                 December 31, 1997.)

         99-(a)- Belle  River  Participation  Agreement  between  Detroit
                 Edison and Michigan  Public  Power Agency, dated as of December
                 1, 1982 (Exhibit 28-5 to Registration No. 2-81501).

          99(b)- Belle River Transmission Ownership and Operating
                 Agreement between Detroit Edison and Michigan Public Power
                 Agency, dated as of December 1, 1982 (Exhibit 28-6 to
                 Registration No. 2-81501).

          99(c)- 1988 Amended and Restated Loan Agreement, dated as of
                 October 4, 1988, between Renaissance Energy Company (an
                 unaffiliated company) ("Renaissance") and Detroit Edison
                 (Exhibit 99-6 to Registration No. 33-50325).

          99(d)- First Amendment to 1988 Amended and Restated Loan
                 Agreement, dated as of February 1, 1990, between Detroit
                 Edison and Renaissance (Exhibit 99-7 to Registration No.
                 33-50325).

          99(e)- Second Amendment to 1988 Amended and Restated Loan
                 Agreement, dated as of September 1, 1993, between Detroit
                 Edison and Renaissance (Exhibit 99-8 to Registration No.
                 33-50325).

          99(f)- Third Amendment, dated as of August 28, 1997, to 1988
                 Amended and Restated Loan Agreement between Detroit Edison
                 and Renaissance. (Exhibit 99-22 to Form 10-Q for quarter
                 ended September 30, 1997.)

          99(g)- $200,000,000 364-Day Credit Agreement, dated as of
                 September 1, 1993, among Detroit Edison, Renaissance and
                 Barclays Bank PLC, New York Branch, as Agent (Exhibit
                 99-12 to Registration No. 33-50325).

          99(h)- First Amendment, dated as of August 31, 1994, to
                 $200,000,000 364-Day Credit Agreement, dated September 1,
                 1993, among The Detroit Edison Company, Renaissance Energy
                 Company, the Banks party thereto and Barclays Bank, PLC,
                 New York Branch, as Agent (Exhibit 99-19 to Form 10-Q for
                 quarter ended September 30, 1994).

          99(i)- Third Amendment, dated as of March 8, 1996, to
                 $200,000,000 364-Day Credit Agreement, dated September 1,
                 1993, as amended, among Detroit Edison, Renaissance, the
                 Banks party thereto and Barclays Bank, PLC, New York
                 Branch, as Agent (Exhibit 99-11 to Form 10-Q for quarter
                 ended March 31, 1996).

                                       32
<PAGE>   33
          99(j)- Fourth Amendment, dated as of August 29, 1996, to
                 $200,000,000 364-Day Credit Agreement as of September 1,
                 1990, as amended, among Detroit Edison, Renaissance, the
                 Banks party thereto and Barclays Bank, PLC, New York
                 Branch, as Agent (Exhibit 99-13 to Form 10-Q for quarter
                 ended September 30, 1996).

          99(k)- Fifth Amendment, dated as of September 1, 1997, to $200,000,000
                 Multi-Year Credit Agreement, dated as of September 1, 1993, as
                 amended, among Detroit Edison, Renaissance, the Banks Party
                 thereto and Barclays Bank PLC, New York Branch, as Agent.
                 (Exhibit 99-24 to Form 10-Q for quarter ended September 30,
                 1997.)

          99(l)- $200,000,000 Three-Year Credit Agreement, dated September 1,
                 1993, among Detroit Edison, Renaissance and Barclays Bank, PLC,
                 New York Branch, as Agent (Exhibit 99-13 to Registration No.
                 33-50325).

          99(m)- First Amendment, dated as of September 1, 1994, to
                 $200,000,000 Three-Year Credit Agreement, dated as of
                 September 1, 1993, among The Detroit Edison Company,
                 Renaissance Energy Company, the Banks party thereto and
                 Barclays Bank, PLC, New York Branch, as Agent (Exhibit
                 99-20 to Form 10-Q for quarter ended September 30, 1994).

          99(n)- Third Amendment, dated as of March 8, 1996, to
                 $200,000,000 Three-Year Credit Agreement, dated September
                 1, 1993, as amended among Detroit Edison, Renaissance, the
                 Banks party thereto and Barclays Bank, PLC, New York
                 Branch, as Agent (Exhibit 99-12 to Form 10-Q for` quarter
                 ended March 31, 1996).

          99(o)- Fourth Amendment, dated as of September 1, 1996, to
                 $200,000,000 Multi-Year (formerly Three-Year) Credit
                 Agreement, dated as of September 1, 1993, as amended among
                 Detroit Edison, Renaissance, the Banks party thereto and
                 Barclays Bank, PLC, New York Branch, as Agent (Exhibit
                 99-14 to Form 10-Q for quarter ended September 30, 1996).

          99(p)- Fifth Amendment, dated as of August 28, 1997, to
                 $200,000,000 364-Day Credit Agreement, dated as of
                 September 1, 1990, as amended, among Detroit Edison,
                 Renaissance, the Banks Party thereto and Barclays Bank
                 PLC, New York Branch, as Agent. (Exhibit 99-25 to Form
                 10-Q for quarter ended September 30, 1997.)

          99(q)- Sixth Amendment, dated as of August 27, 1998, to
                 $200,000,000 364-Day Credit Agreement dated as of
                 September 1, 1990, as amended, among Detroit Edison,
                 Renaissance, the Banks party thereto and Barclays Bank
                 PLC, New York Branch, as agent. (Exhibit 99-32 to
                 Registration No. 333-65765.)

                                       33
<PAGE>   34
          99(r)- 1988 Amended and Restated Nuclear Fuel Heat Purchase
                 Contract, dated October 4, 1988, between Detroit Edison
                 and Renaissance (Exhibit 99-9 to Registration No.
                 33-50325).

          99(s)- First Amendment to 1988 Amended and Restated Nuclear
                 Fuel Heat Purchase Contract, dated as of February 1, 1990,
                 between Detroit Edison and Renaissance (Exhibit 99-10 to
                 Registration No. 33-50325).

          99(t)- Second  Amendment,  dated as of September 1, 1993, to 1988
                 Amended and Restated  Nuclear Fuel Heat Purchase Contract
                 between Detroit Edison and Renaissance (Exhibit 99-11 to
                 Registration No. 33-50325).

          99(u)- Third Amendment, dated as of August 31, 1994, to 1988
                 Amended and Restated Nuclear Fuel Heat Purchase Contract,
                 dated October 4, 1988, between The Detroit Edison Company
                 and Renaissance Energy Company (Exhibit 99-21 to Form 10-Q
                 for quarter ended September 30, 1994).

          99(v)- Fourth Amendment, dated as of March 8, 1996, to 1988
                 Amended and Restated Nuclear Fuel Heat Purchase Contract
                 Agreement, dated as of October 4, 1988, between Detroit
                 Edison and Renaissance (Exhibit 99-10 to Form 10-Q for
                 quarter ended March 31, 1996).

          99(w)- Sixth Amendment, dated as of August 28, 1997, to
                 1988 Amended and Restated Nuclear Fuel Heat Purchase
                 Contract between Detroit Edison and Renaissance. (Exhibit
                 99-23 to Form 10-Q for quarter ended September 30, 1997.)

         99(x) - Standby Note Purchase Credit Facility, dated as of
                 September 12, 1997, among The Detroit Edison Company and
                 the Bank's Signatory thereto and The Chase Manhattan Bank,
                 as Administrative Agent, and Citicorp Securities, Inc.,
                 Lehman Brokers, Inc., as Remarketing Agents and Chase
                 Securities, Inc. as Arranger. (Exhibit 999-26 to Form 10-Q
                 for quarter ended September 30, 1997.)

(b)    Registrants filed a report on Form 8-K, dated January 22, 1999,
       discussing a series of MPSC Orders issued December 28, 1998.

       *Denotes management contract or compensatory plan or arrangement.


                                       34
<PAGE>   35


                                   SIGNATURES


       Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.







                                                  DTE ENERGY COMPANY
                                          --------------------------------------
                                                     (Registrant)





Date       April 28, 1999                        /s/ SUSAN M. BEALE
     ------------------------------       --------------------------------------
                                                   Susan M. Beale
                                          Vice President and Corporate Secretary





Date       April 28, 1999                        /s/ DAVID E. MEADOR
     ------------------------------       --------------------------------------
                                                    David E. Meador
                                              Vice President and Controller



                                       35
<PAGE>   36



                                   SIGNATURES



       Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.







                                              THE DETROIT EDISON COMPANY
                                          --------------------------------------
                                                      (Registrant)





Date       April 28, 1999                         /s/ SUSAN M. BEALE
     ------------------------------       --------------------------------------
                                                     Susan M. Beale
                                          Vice President and Corporate Secretary





Date       April 28, 1999                          /s/ DAVID E. MEADOR
     ------------------------------       --------------------------------------
                                                      David E. Meador
                                               Vice President and Controller



                                       36
<PAGE>   37
                            QUARTERLY REPORTS ON FORM
                           10-Q FOR THE QUARTER ENDED
                                 MARCH 31, 1999


        DTE ENERGY COMPANY                           FILE NO. 1-11607

         DETROIT EDISON COMPANY                      FILE NO. 1-2198


                                  EXHIBIT INDEX



                 Exhibits filed herewith.


          Exhibit
          Number
          --------

              3-11   Bylaws of DTE Energy Company, as amended through April
                     28,1999.
                     
              3-12   Bylaws of The Detroit Edison Company, as amended
                     through April 28, 1999.
                     
              4-202  $40,000,000 Support Agreement dated as of February 24,
                     1999 between DTE Energy Company and DTE Capital
                     Corporation.
                     
             *10-32  1999 Shareholder Value Improvement Plan-A Measures.
                     
             *10-33  1999 Executive Incentive Plan Measures.
                     
              11-15- DTE Energy Company Basic and Diluted Earnings Per
                     Share of Common Stock.
                     
              12-16- DTE Energy Company Computation of Ratio of Earnings
                     to Fixed Charges.
                     
              12-17- The Detroit Edison Company Computation of Ratio of
                     Earnings to Fixed Charges.
                     
              15-10- Awareness Letter of Deloitte & Touche LLP regarding
                     their report dated April 28, 1999.
                     
              27-27- Financial Data Schedule for the period ended March
                     31, 1999 for DTE Energy Company.
                     
              27-28- Financial Data Schedule for the period ended March
                     31, 1999 for The Detroit Edison Company.


<PAGE>   38

    Exhibits incorporated herein by reference.    See Page Nos.     through
                                                       for location of exhibits
                                                  incorporated by reference

              3(a) -  Amended and Restated Articles of Incorporation of DTE
                      Energy Company, dated December 13, 1995.
                      
              3(b) -  Certificate of Designation of Series A Junior
                      Participating Preferred Stock of DTE Energy Company.
                      
              3(c) -  Restated Articles of Incorporation of Detroit Edison, 
                      as filed December 10, 1991 with the State of Michigan, 
                      Department of Commerce - Corporation and Securities 
                      Bureau.
                      
              3(d) -  Certificate containing resolution of the Detroit
                      Edison Board of as filed February 22, 1993 with the
                      State of Michigan, Department of Commerce - Corporation
                      and Securities Bureau.
                      
              3(e) -  Certificate containing resolution of the Detroit
                      Edison Board of Directors establishing the Cumulative
                      Preferred Stock, 7.74% Series, as filed April 21, 1993
                      with the State of Michigan, Department of Commerce -
                      Corporation and Securities Bureau.
                      
              3(f) -  Rights Agreement, dated as of September 23, 1997, by
                      and between DTE Energy Company and The Detroit Edison
                      Company, as Rights Agent.
                      
              3(g) -  Agreement and Plan of Exchange.
                      
              4(a) -  Mortgage and Deed of Trust, dated as of October 1,
                      1924, between Detroit Edison and Bankers Trust Company
                      as Trustee and indentures supplemental thereto, dated
                      as of dates indicated below, and filed as exhibits to
                      the filings as set forth below:
                      
                      September 1, 1947 
                      October 1, 1968 
                      November 15, 1971                        
                      January 15, 1973 
                      June 1, 1978 
                      June 30, 1982 
                      August 15, 1982 
                      October 15, 1985 
                      November 30, 1987 
                      July 15, 1989
                      December 1, 1989 
                      February 15, 1990 
                      April 1, 1991 
                      May 1, 1991 

<PAGE>   39



                        September 1, 1991 
                        November 1, 1991 
                        January 15, 1992 
                        February 29, 1992 
                        April 15, 1992 
                        July 15, 1992
                        July 31, 1992 
                        November 30, 1992 
                        January 1, 1993 
                        March 1, 1993 
                        March 15, 1993 
                        April 1, 1993
                        April 26, 1993 
                        May 31, 1993 
                        June 30, 1993
                        June 30, 1993
                        September 15, 1993
                        March 1, 1994 
                        June 15, 1994 
                        August 15, 1994 
                        December 1, 1994
                        August 1, 1995
                       
              4(b) -   Collateral Trust Indenture (notes), dated as of June
                       30, 1993.
                       
              4(c) -   First Supplemental Note Indenture, dated as of June
                       30, 1993.
                       
              4(d) -   Second Supplemental Note Indenture, dated as of
                       September 15, 1993.
                       
              4(e) -   First Amendment, dated as of August 15, 1996, to
                       Second Supplemental Note Indenture.
                       
              4(f) -   Third Supplemental Note Indenture, dated as of
                       August 15, 1994.
                       
              4(g) -   First Amendment, dated as of December 12, 1995, to
                       Third Supplemental Note Indenture, dated as of August
                       15, 1994.
                       
              4(h) -   Fourth Supplemental Note Indenture, dated as of
                       August 15, 1995.
                       
              4(i) -   Fifth Supplemental Note Indenture, dated as of
                       February 1, 1996.
                       
              4(j) -   Sixth Supplemental Note Indenture, dated as of May
                       1, 1998, between Detroit Edison and Bankers Trust
                       Company, as Trustee, creating the 7.54% Quarterly
                       Income Debt Securities ("QUIDS"), including form of
                       QUIDS.
                       
              4(k) -   Seventh Supplemental Note Indenture, dated as of
                       October 15, 1998, between Detroit Edison and Bankers
                       Trust Company, as Trustee, creating the 7.375% QUIDS,
                       including form of QUIDS.

<PAGE>   40

              
              4(l)  - Standby Note Purchase Credit Facility, dated as of
                      August 17, 1994, among The Detroit Edison Company,
                      Barclays Bank PLC, as Bank and Administrative Agent,
                      Bank of America, The Bank of New York, The Fuji Bank
                      Limited, The Long-Term Credit Bank of Japan, LTD,
                      Union Bank and Citicorp Securities, Inc. and First
                      Chicago Capital Markets, Inc. as Remarketing Agents.
                      
              4-(m) - $60,000,000 Support Agreement dated as of January
                      21, 1998 between DTE Energy Company and DTE Capital
                      Corporation.
                      
              4-(n) - $100,000,000 Support Agreement, dated as of June 16,
                      1998, between DTE Energy Company and DTE Capital
                      Corporation.
                      
              4-(o) - $300,000,000 Support Agreement, dated as of November
                      18, 1998, between DTE Energy and DTE Capital
                      Corporation.
                      
              4-(p) - $400,000,000 Support Agreement, dated as of January
                      19, 1999, between DTE Energy Company and DTE Capital
                      Corporation.
                      
              4-(q) - Indenture, dated as of June 15, 1998, between DTE
                      Capital Corporation and The Bank of New York, as
                      Trustee.
                      
              4-(r) - First Supplemental Indenture, dated as of June 15,
                      1998, between DTE Capital Corporation and The Bank of
                      New York, as Trustee, creating the $100,000,000
                      Remarketed Notes, Series A due 2038, including form of
                      Note.
                      
              4-(s) - Second Supplemental Indenture, dated as of November
                      1, 1998, between DTE Capital Corporation and The Bank
                      of New York, as Trustee, creating the $300,000,000
                      Remarketed Notes, 1998 Series B, including form of
                      Note.
                      
              4(t)  - Second Amended and Restated Credit Agreement, Dated
                      as of January 19, 1999 among DTE Capital Corporation,
                      the Initial Lenders, Citibank, N.A., as Agent, and ABN
                      AMRO Bank N.V., Barclays Bank PLC, Bayerische
                      Landesbank Giruzertrale, Cayman Islands Branch,
                      Comerica Bank, Den Daske Bank Aktieselskab and The
                      First National Bank of Chicago, as Co-Agents, and
                      Salomon Smith Barney Inc., as Arranger.
                      
              *10-(a) The Detroit Edison Company Executive Incentive Plan
                      (October 1997).
                      
              *10-(b) Detroit Edison Company Shareholder Value Improvement
                      Plan-A (October 1997).
                      
              99-(a)- Belle River Participation Agreement between Detroit
                      Edison and Michigan Public Power Agency, dated as of
                      December 1, 1982.

<PAGE>   41

              99(b) - Belle River Transmission Ownership and Operating
                      Agreement between Detroit Edison and Michigan Public
                      Power Agency, dated as of December 1, 1982.
                      
              99(c) - 1988 Amended and Restated Loan Agreement, dated as
                      of October 4, 1988, between Renaissance Energy Company
                      (an unaffiliated company) ("Renaissance") and Detroit
                      Edison.
                      
              99(d) - First Amendment to 1988 Amended and Restated Loan
                      Agreement, dated as of February 1, 1990, between
                      Detroit Edison and Renaissance.
                      
              99(e) - Second Amendment to 1988 Amended and Restated Loan
                      Agreement, dated as of September 1, 1993, between
                      Detroit Edison and Renaissance.
                      
              99(f) - Third Amendment, dated as of August 28, 1997, to
                      1988 Amended and Restated Loan Agreement between
                      Detroit Edison and Renaissance.
                      
              99(g) - $200,000,000 364-Day Credit Agreement, dated as of
                      September 1, 1993, among Detroit Edison, Renaissance
                      and Barclays Bank PLC, New York Branch, as Agent.
                      
              99(h) - First Amendment, dated as of August 31, 1994, to
                      $200,000,000 364-Day Credit Agreement, dated September
                      1, 1993, among The Detroit Edison Company, Renaissance
                      Energy Company, the Banks party thereto and Barclays
                      Bank, PLC, New York Branch, as Agent.
                      
              99(i) - Third Amendment, dated as of March 8, 1996, to
                      $200,000,000 364-Day Credit Agreement, dated September
                      1, 1993, as amended, among Detroit Edison,
                      Renaissance, the Banks party thereto and Barclays
                      Bank, PLC, New York Branch, as Agent.
                      
              99(j) - Fourth Amendment, dated as of August 29, 1996, to
                      $200,000,000 364-Day Credit Agreement as of September
                      1, 1990, as amended, among Detroit Edison,
                      Renaissance, the Banks party thereto and Barclays
                      Bank, PLC, New York Branch, as Agent.
                      
              99(k) - Fifth Amendment, dated as of September 1, 1997, to
                      $200,000,000 Multi-Year Credit Agreement, dated as of
                      September 1, 1993, as amended, among Detroit Edison,
                      Renaissance, the Banks Party thereto and Barclays Bank
                      PLC, New York Branch, as Agent.
                      
              99(l) - $200,000,000 Three-Year Credit Agreement, dated
                      September 1, 1993, among Detroit Edison, Renaissance
                      and Barclays Bank, PLC, New York Branch, as Agent.


<PAGE>   42



              99(m) -  First Amendment, dated as of September 1, 1994, to
                       $200,000,000 Three-Year Credit Agreement, dated as of
                       September 1, 1993, among The Detroit Edison Company,
                       Renaissance Energy Company, the Banks party thereto
                       and Barclays Bank, PLC, New York Branch, as Agent.
                      
              99(n) -  Third Amendment, dated as of March 8, 1996, to
                       $200,000,000 Three-Year Credit Agreement, dated
                       September 1, 1993, as amended among Detroit Edison,
                       Renaissance, the Banks party thereto and Barclays
                       Bank, PLC, New York Branch, as Agent.
                      
              99(o) -  Fourth Amendment, dated as of September 1, 1996, to
                       $200,000,000 Multi-Year (formerly Three-Year) Credit
                       Agreement, dated as of September 1, 1993, as amended
                       among Detroit Edison, Renaissance, the Banks party
                       thereto and Barclays Bank, PLC, New York Branch, as
                       Agent.
                      
              99(p) -  Fifth Amendment, dated as of August 28, 1997, to
                       $200,000,000 364-Day Credit Agreement, dated as of
                       September 1, 1990, as amended, among Detroit Edison,
                       Renaissance, the Banks Party thereto and Barclays Bank
                       PLC, New York Branch, as Agent.
                      
              99(q) -  Sixth Amendment, dated as of August 27, 1998, to
                       $200,000,000 364-Day Credit Agreement dated as of
                       September 1, 1990, as amended, among Detroit Edison,
                       Renaissance, the Banks party thereto and Barclays Bank
                       PLC, New York Branch, as agent.
                      
              99(r) -  1988 Amended and Restated Nuclear Fuel Heat Purchase
                       Contract, dated October 4, 1988, between Detroit
                       Edison and Renaissance.
                      
              99(s) -  First Amendment to 1988 Amended and Restated Nuclear
                       Fuel Heat Purchase Contract, dated as of February 1,
                       1990, between Detroit Edison and Renaissance.
                      
              99(t) -  Second Amendment, dated as of September 1, 1993, to
                       1988 Amended and Restated Nuclear Fuel Heat Purchase
                       Contract between Detroit Edison and Renaissance.
                      
              99(u) -  Third Amendment, dated as of August 31, 1994, to
                       1988 Amended and Restated Nuclear Fuel Heat Purchase
                       Contract, dated October 4, 1988, between The Detroit
                       Edison Company and Renaissance Energy Company.
                      
              99(v) -  Fourth Amendment, dated as of March 8, 1996, to 1988
                       Amended and Restated Nuclear Fuel Heat Purchase
                       Contract Agreement, dated as of October 4, 1988,
                       between Detroit Edison and Renaissance.


<PAGE>   43

              99(w) -  Sixth Amendment, dated as of August 28, 1997, to 1988
                       Amended and Restated Nuclear Fuel Heat Purchase
                       Contract between Detroit Edison and Renaissance.
                      
              99(x) -  Standby Note Purchase Credit Facility, dated as of
                       September 12, 1997, among The Detroit Edison Company
                       and the Bank's Signatory thereto and The Chase
                       Manhattan Bank, as Administrative Agent, and Citicorp
                       Securities, Inc., Lehman Brokers, Inc., as Remarketing
                       Agents and Chase Securities, Inc. as Arranger.


        *Denotes management contract or compensatory plan or arrangement.