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|MCN ENERGY GROUP INC. AND SUBSIDIARIES            |  | EXHIBIT 12-1
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|COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
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|(DOLLARS IN THOUSANDS)                           

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|---------------------------------------------------------- | ------------------------ | - | ------------- | ------- |  | ------------ | ------------- | ------- | ------------ | ------------- | -------- | ------------ | ------------- | - | ------------ | ------------- |  | - | ------- | ------- | 
|                                                           |                          |   |               |         |  |              | Twelve Months |         |              | Twelve Months |          |              | Twelve Months |   |              | Twelve Months | 
|                                                           |                          |   | Twelve Months |         |  | Ended        |               |         | Ended        |               |          | Ended        |               |   | Ended        |              
|                                                           |                          |   | Ended         |         |  | December 31, |               |         | December 31, |               |          | December 31, |               |   | December 31, |              
|                                                           |                          |   | December 31,  |         |  | 1999         |               |         | 1998         |               |          | 1997         |               |   | 1996         |              
|                                                           |                          |   | 2000          |         |  | (Restated)*  |               |         | (Restated)*  |               |          | (Restated)*  |               |   | (Restated)*  |              
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|EARNINGS
AS DEFINED (1)
Pre-tax income (loss)              |                          | $ | 167,681       |         |  | $            | (33,159       | )       |              | $             | (516,558 | )            |               | $ | 132,033      |               |  | $ | 170,911 |        
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|Fixed charges (2)                                          |                          |   | 159,755       |         |  |              | 168,203       |         |              |               | 158,242  |              |               |   | 125,338      |               |  |   | 99,944  |        
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|Earnings as defined                                        |                          | $ | 327,436       |         |  | $            | 135,044       |         |              | $             | (358,316 | )            |               | $ | 257,371      |               |  | $ | 270,855 |        
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|FIXED CHARGES AS DEFINED (1)
Interest, expensed            |                          | $ | 122,797       |         |  | $            | 119,773       |         |              | $             | 111,750  |              |               | $ | 86,453       |               |  | $ | 77,781  |        
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|Interest, capitalized                                      |                          |   | 2,765         |         |  |              | 8,929         |         |              |               | 19,938   |              |               |   | 18,190       |               |  |   | 13,235  |        
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|Amortization of debt discounts, premium
and expense        |                          |   | 4,593         |         |  |              | 3,562         |         |              |               | 2,869    |              |               |   | 2,426        |               |  |   | 2,217   |        
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|Interest implicit in rentals                               |                          |   | 2,078         |         |  |              | 2,208         |         |              |               | 2,554    |              |               |   | 2,181        |               |  |   | 2,339   |        
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|Preferred securities dividend requirements
of subsidiaries |                          |   | 28,565        |         |  |              | 40,139        |         |              |               | 36,370   |              |               |   | 31,090       |               |  |   | 12,390  |        
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|                                                           | Fixed charges as defined |   | $             | 160,798 |  |              | $             | 174,611 |              |               | $        | 173,481      |               |   | $            | 140,340       |  |   | $       | 107,962 | 
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|Ratio of Earnings to Fixed Charges                         |                          |   | 2.04          |         |  |              |               |         |              |               |          |              |               |   | 1.83         |               |  |   | 2.51    |        
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|Coverage Deficiency                                        |                          |   |               |         |  | $            | 39,567        |         |              | $             | 531,797  |             
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|*   |  | Income has been restated in the appropriate accounting periods to
reflect the new method of accounting for inventory as described in Note 3
to the Consolidated Financial Statements.
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|(1) |  | Earnings and fixed charges are defined and computed in accordance with Item
503 of Regulation S-K.                                                                                   
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|(2) |  | Fixed charges added to earnings are adjusted to exclude interest
capitalized during the period for nonutility companies.