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                                                                   EXHIBIT 12.2

MCN ENERGY GROUP INC. AND SUBSIDIARIES
COMPUTATION OF INTEREST COVERAGE RATIO
(Dollars in Thousands)

The following table sets forth the interest coverage ratio for MCN on a
historical basis for the periods indicated.  This ratio differs from the SEC
prescribed "Ratio of Earnings to Fixed Charges" in its treatment of certain
hybrid securities of MCN.

<TABLE>
<CAPTION>
                                              Twelve Months         Twelve Months         Twelve Months
                                                  Ended                 Ended                Ended
                                            December 31, 1997     December 31, 1996     December 31, 1995
                                            --------------------------------------------------------------
<S>                                          <C>                   <C>                    <C>
EARNINGS AS ADJUSTED:
Pre-tax income (1)                           $   194,430               148,944                 128,499
Nonrecourse debt                                   1,609                    --                      --
Interest capitalized                             (18,190)              (14,631)                 (7,893)
Preferred dividend adjustment (2)                 32,465                17,989                   9,610
Pension costs                                    (20,539)              (14,029)                (14,099)
Postretirement costs                              11,411                13,586                  19,460
Interest rate charges                            103,840                89,136                  67,120
                                             -----------           -----------            ------------
                                                 305,026               240,995                 202,697
                                             ===========           ===========            ============

INTEREST RATE CHARGES:
Interest expensed                                 86,453                77,781                  56,902
Interest capitalized                              18,190                14,631                   7,893
Interest implicit in rentals                       2,181                 2,339                   2,325
Nonrecourse interest                              (1,609)                   --                      --
Preferred dividends adjustment (3)                (1,375)               (5,615)                     --
                                             -----------           -----------            ------------
                                                 103,840                89,136                  67,120
                                             ===========           ===========            ============

Interest Coverage Ratio                             2.94                  2.70                    3.02
                                             ===========           ===========            ============
</TABLE>

(1) Income from continuing operations before income taxes
(2) Preferred dividends expensed, adjusted to:  exclude (a) dividends on the
    $100,000,000 of Single Point Remarketed Reset Capital Securities (SPRRCS) 
    of MCN Financing VI, (b) dividends on the $100,000,000 of Private
    Institutional Trust Securities (PRINTS) of MCN Financing V and to include
    (c) interest on the $130,000,000 of 6.82% Series Medium-Term Notes, issued
    in conjunction with the $135,000,000 of 8% Preferred Redeemable Increased
    Dividend Equity Securities of MCN.
(3) Includes interest on $130,000,000 of 6.82% Series Medium-Term Notes less
    dividends on the SPRRCS and PRINTS.

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