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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                              -------------------
 
   
                                  FORM 10-K/A
    
 
   
                                AMENDMENT NO. 1
    
   
     (THIS AMENDMENT NO. 1 IS FILED TO PROVIDE AN ENTIRE EXHIBIT NO. 13-1.)
    
 
                 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
 
FOR THE FISCAL YEAR ENDED DECEMBER 31, 1997       COMMISSION FILE NUMBER 1-10070
 
                             MCN ENERGY GROUP INC.
             (Exact name of registrant as specified in its charter)
 
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<S>                                        <C>
                MICHIGAN                     38-2820658
     (State or other jurisdiction of          (I.R.S.
     incorporation or organization)           Employer
                                           Identification No.)   
 
 500 GRISWOLD STREET, DETROIT, MICHIGAN        48226
(Address of principal executive offices)     (Zip Code)
</TABLE>
 
                                  313-256-5500
              (Registrant's telephone number, including area code)
 
SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:
 
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<CAPTION>
                                                              NAME OF EACH EXCHANGE
                                                               ON WHICH REGISTERED
                    TITLE OF EACH CLASS                       ---------------------
<S>                                                          <C>
Common Stock, $.01 Par Value Per Share                       New York Stock Exchange
9 3/8% Cumulative Preferred Securities, Series A*            New York Stock Exchange
8 5/8% Trust Originated Preferred Securities**               New York Stock Exchange
8 3/4% Preferred Redeemable Increased Dividend Equity
  Securities                                                 New York Stock Exchange
8% FELINE PRIDES                                             New York Stock Exchange
</TABLE>
 
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*  Issued by MCN Michigan Limited Partnership. The payments of dividends and
   payments on liquidation or redemption are guaranteed by MCN Energy Group Inc.
 
** Issued by MCN Financing I. The payments of dividends and payments on
   liquidation or redemption are guaranteed by MCN Energy Group Inc.
 
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<S>                                                          <C>
SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:           None
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     Indicate by check mark whether the registrant (1) has 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
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes  X   No  ___
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendments to
this Form 10-K.  X
 
     The aggregate market value of MCN Energy Group Inc. Common Stock, $.01 par
value per share, held by non-affiliates as of February 24, 1998 was $2.896
billion based on 78,270,811 outstanding shares and the closing price on that day
(New York Stock Exchange Composite Transactions).
 
                      DOCUMENTS INCORPORATED BY REFERENCE:
 
     Portions of MCN's 1997 Annual Report to Shareholders are incorporated by
reference in Part II, Items 5,6,7 and 8 and portions of MCN's February 1998
definitive Proxy Statement are incorporated by reference in Part III.
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                                   SIGNATURES
 
     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this Annual Report to be
signed on its behalf by the undersigned, thereunto duly authorized.
 
                                                  MCN ENERGY GROUP INC.
                                          --------------------------------------
                                                       (Registrant)
 
                                          By:      /s/ Harold Gardner
                                            ------------------------------------
                                                       Harold Gardner
                                                 Vice President, Controller
                                                and Chief Accounting Officer
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed by the following persons on behalf of the registrant and
in the capacities and on the date indicated.
 
   
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<CAPTION>
                                                                 TITLE                         DATE
                                                                 -----                         ----
<C>                                              <S>                                      <C>
 
                      *                          Director, Chairman, President and        March 12, 1998
---------------------------------------------    Chief Executive Officer
            Alfred R. Glancy III
 
                      *                          Director, Vice Chairman and Chief        March 12, 1998
---------------------------------------------    Financial Officer
            William K. McCrackin
 
             /s/ Harold Gardner                  Vice President, Controller and Chief     March 12, 1998
---------------------------------------------    Accounting Officer
               Harold Gardner
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
              Stephen E. Ewing
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
               Roger Fridholm
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
             Frank M. Hennessey
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
             Thomas H. Jeffs II
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
               Dale A. Johnson
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
             Helen O. Petrauskas
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
               Howard F. Sims
 
                      *                          Director                                 March 12, 1998
---------------------------------------------
              Bill M. Thompson
 
           *By: /s/ HAROLD GARDNER
   ---------------------------------------
               Harold Gardner
              Attorney-in-Fact
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                                 EXHIBIT INDEX
 
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<CAPTION>
EXHIBIT
  NO.                              DESCRIPTION
-------                            -----------
<C>        <S>
    3-1    Articles of Incorporation of MCN Energy Group Inc. (Exhibit
           3-1 to March 31, 1997 Form 10-Q).
    3-2    By-Laws of MCN Energy Group Inc., as amended.*
    3-3    Certificate of Limited Partnership of MCN Michigan Limited
           Partnership (Exhibit 4-6 to Registration Statement No.
           33-55665).
    3-4    Certificate of Trust of MCN Financing I (Exhibit 4-11 to
           Registration Statement No. 333-01521).
    3-5    Certificate of Trust of MCN Financing III (Exhibit 4-16 to
           Registration Statement No. 333-21175).
    4-1    Rights Plan (Exhibit 28-1 to December 20, 1989 Form 8-K).
    4-2    Senior Debt Securities Indenture between MCN Energy Group
           Inc. and NBD Bank, N.A., as Trustee, dated September 1, 1994
           (Exhibit 4-4 to Registration Statement No. 33-55665); First
           Supplemental Indenture, dated June 4, 1997.*
    4-3    Subordinated Debt Securities Indenture between MCN Energy
           Group Inc. and NBD Bank, N.A., as Trustee, dated September
           1, 1994 (Exhibit 4-5 to Registration Statement No.
           33-55665); First Supplemental Indenture, dated April 17,
           1996 (Exhibit 4-18 to Amendment No. 2 to Registration
           Statement No. 333-01521); and Second Supplemental Indenture,
           dated July 24, 1996 (Exhibit 5-2 to July 24, 1996 Form 8-K).
    4-4    MichCon's Indenture of Mortgage and Deed of Trust dated
           March 1, 1944 (Exhibit 7-D to Registration Statement No.
           2-5252); Twenty-ninth Supplemental Indenture, dated July 15,
           1989 (Exhibit 4-1 to July 27, 1989 Form 8-K); Thirtieth
           Supplemental Indenture, dated September 1, 1991 (Exhibit 4-1
           to September 27, 1991 Form 8-K); Thirty-first Supplemental
           Indenture, dated December 15, 1991 (Exhibit 4-1 to February
           28, 1992 Form 8-K); Thirty-second Supplemental Indenture,
           dated January 5, 1993 (Exhibit 4-1 to 1992 Form 10-K);
           Thirty-third Supplemental Indenture, dated May 1, 1996
           (Exhibit 4-2 to Registration Statement No. 33-59093); and
           Thirty-forth Supplemental Indenture, dated November 1, 1996
           (Exhibit 4-2 to Registration Statement No. 333-16285).
    4-5    Debt Securities Indenture between MCN Investment Corp. and
           NBD Bank as Trustee, dated September 1, 1995 (Exhibit 4-1 to
           Registration Statement No. 33-63311).
    4-6    MCN hereby agrees to furnish to the SEC, upon request, a
           copy of any instruments defining the rights of holders of
           long-term debt issued by MCN or its subsidiaries.
    4-7    Form of Guarantee Agreement with Respect to Preferred
           Securities of MCN Michigan Limited Partnership (Exhibit 4-8
           to Registration Statement No. 33-55665).
    4-8    Amended and Restated Limited Partnership Agreement of MCN
           Michigan Limited Partnership (Exhibit 4-1 to October 26,
           1994 Form 8-K).
    4-9    Form of MCN Energy Group Inc. Series A Subordinated
           Deferrable Interest Debt Security for $100,000,000 (Exhibit
           4-6 to October 26, 1994 Form 8-K).
   4-10    Form of MCN Energy Group Inc. Series A Subordinated
           Deferrable Interest Debt Security for $1,100,000 (Exhibit
           4-7 to October 26, 1994 Form 8-K).
   4-11    Purchase Contract Agreement dated April 22, 1996 between MCN
           Energy Group Inc. and the First National Bank of Chicago, as
           Purchase Contract Agent (Exhibit 4-9 to April 22, 1996 Form
           8-K).
   4-12    Pledge Agreement dated April 22, 1996 among MCN Energy Group
           Inc., Chemical Bank, as Collateral Agent, and The First
           National Bank of Chicago, as Purchase Contract Agent
           (Exhibit 4-10 to April 22, 1996 Form 8-K).
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<TABLE>
<CAPTION>
EXHIBIT
  NO.                              DESCRIPTION
-------                            -----------
<C>        <S>
   4-13    Form of Preferred Redeemable Increased Dividend Equity
           Securities Certificate (Exhibit A to the Purchase Contract
           Agreement included as Exhibit 4-10 hereto).
   4-14    Amended and Restated Declaration of Trust of MCN Financing
           I, dated as of July 24, 1996 (Exhibit 5-1 to July 24, 1996
           Form 8-K).
   4-15    Preferred Securities Guarantee Agreement, dated as of July
           26, 1996, between MCN and Wilmington Trust Company (Exhibit
           5-4 to July 24, 1996 Form 8-K).
   4-16    Form of Preferred Security of MCN Financing I (Annex I to
           the Amended and Restated Declaration of Trust of MCN
           Financing I included as Exhibit 4-13 hereto).
   4-17    Purchase Contract Agreement dated March 25, 1997 between MCN
           and The First National Bank of Chicago, as Purchase Contract
           Agent (Exhibit 5-5 to March 19, 1997 Form 8-K).
   4-18    Pledge Agreement dated March 25, 1997 among MCN, Chase
           Manhattan Bank, as Collateral Agent, and The First National
           Bank of Chicago, as Purchase Contract Agent (Exhibit 5-6 to
           March 19, 1997 Form 8-K.)
   4-19    Form of FELINE PRIDES Certificate (Exhibit A to the Purchase
           Contract Agreement included as Exhibit 4-17 hereto).
   4-20    Amended and Restated Declaration of Trust of MCN Financing
           III, dated as of March 19, 1997 (Exhibit 5-2 to March 19,
           1997 Form 8-K).
   4-21    Preferred Securities Guarantee Agreement, dated as of March
           19, 1997, between MCN and Wilmington Trust Company (Exhibit
           5-4 to March 19, 1997 Form 8-K).
   4-22    Form of Preferred Security of MCN Financing III (Annex I to
           the Amended and Restated Declaration of Trust of MCN
           Financing III included as Exhibit 4-20 hereto).
   10-1    MCN Stock Option Plan Post-Effective Amendment No. 1
           (Registration Statement No. 33-21930-99).
   10-2    Form of Employment Agreement (Exhibit 99-2 to June 30, 1997
           Form 10-Q).
   10-3    MCN Energy Group Inc. Annual Performance Plan (Exhibit 10-6
           to 1993 Form 10-K).
   10-4    MCN Energy Group Inc. Stock Incentive Plan (Exhibit 10-1 to
           March 31, 1995 Form 10-Q).
   10-5    Special Retention Agreement between MCN Energy Group Inc.
           and Rai P. Bhargava (Exhibit 10-1 to June 30, 1995 Form
           10-Q).
   10-6    MCN Executive Deferred Compensation Plan, as amended
           (Exhibit 10-1 to September 30, 1996 Form 10-Q).
   10-7    MichCon Supplemental Death Benefit and Retirement Income
           Plan (Exhibit 10-2 to September 30, 1996 Form 10-Q).
   10-8    MichCon Supplemental Retirement Plan (Exhibit 10-3 to
           September 30, 1996 Form 10-Q).
   10-9    MCN Energy Group Inc. Mandatory Deferred Compensation Plan,
           as amended (Exhibit 10-11 to 1996 Form 10-K).
  10-10    MCN Energy Group Inc. Supplemental Savings Plan (Exhibit
           10-12 to 1996 Form 10-K).
  10-11    MCN Energy Group Inc. Nonemployee Directors' Compensation
           Plan, as amended (Exhibit 99-1 to June 30, 1997 Form 10-Q).
   12-1    Computation of Ratio of Earnings to Fixed Charges for MCN
           Energy Group Inc.*
   12-2    Computation of Interest Coverage Ratio for MCN Energy Group
           Inc.*
   12-3    Computation of Ratio of Earnings to Fixed Charges for MCN
           Investment Corporation.*
   12-4    Computation of Interest Coverage Ratio for MCN Investment
           Corporation.*
   13-1    MCN Energy Group Inc. 1997 Annual Report to Shareholders.**
   21-1    List of MCN Subsidiaries.*
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<CAPTION>
EXHIBIT
  NO.                              DESCRIPTION
-------                            -----------
<C>        <S>
   23-1    Independent Auditors' Consent -- Deloitte & Touche LLP.*
   23-2    Consent of Ryder Scott Company.*
   23-3    Consent of Miller and Lents, Ltd.*
   23-4    Consent of S.A. Holditch & Associates, Inc.*
   23-5    Consent of Williamson Petroleum Consultants, Inc.*
   23-6    Consent of Questa Engineering Corporation.*
   23-7    Consent of Netherland, Sewell & Associates, Inc.*
   24-1    Powers of Attorney.*
   27-1    Financial Data Schedule.*
   99-1    MichCon Investment and Stock Ownership Plan, as amended
           (Exhibit 99-1 to March 31, 1997 Form 10-Q).
   99-2    MCN Energy Group Inc. Savings and Stock Ownership Plan, as
           amended (Exhibit 99-2 to March 31, 1997 Form 10-Q).
</TABLE>
 
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 * Indicates documents previously filed.
    
 
   
** Indicates document filed herewith.
    
 
References are to MCN (File No. 1-10070) for documents incorporated by
reference.
 
References are to MichCon (File No. 1-7310) for MichCon documents incorporated
by reference.