EXHIBIT 12-1

MCN ENERGY GROUP INC. AND SUBSIDIARIES

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES


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|---------------------------------------------------------- | ------------------------ | -------- | -------- | ------------ | - | ------------ | -------- | ------------ | - | ------------ | ------- | ------------ |  | - | ------- | ------- |  | - | ------- | ------- |  | - | ------- | ------- | 
|                                                           |                          | Twelve   |          | Twelve       |   | Twelve       |          | Twelve       |   | Twelve       |         | Twelve      
|                                                           |                          | Months   |          | Months       |   | Months       |          | Months       |   | Months       |         | Months      
|                                                           |                          | Ended    |          | Ended        |   | Ended        |          | Ended        |   | Ended        |         | Ended       
|                                                           |                          | June 30, |          | December 31, |   | December 31, |          | December 31, |   | December 31, |         | December 31,
|                                                           |                          | 1999     |          | 1998         |   | 1997         |          | 1996         |   | 1995         |         | 1994        
|                                                           |                          |          |          |              |   |              |          |              |   |              |         |             
|(Dollars in Thousands)                                     |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|EARNINGS AS DEFINED (1)(5)(6)                              |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|Pre-tax income(2)(7)(8)                                    |                          | $        | (273,006 | )            |   | $            | (497,476 | )            |   | $            | 167,336 |              |  | $ | 146,607 |         |  | $ | 128,997 |         |  | $ | 100,143 |        
|Fixed charges(3)                                           |                          |          | 169,143  |              |   |              | 158,242  |              |   |              | 125,338 |              |  |   | 99,944  |         |  |   | 72,895  |         |  |   | 55,197  |        
|                                                           |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|                                                           | Earnings as defined      |          | $        | (103,863     | ) |              | $        | (339,234     | ) |              | $       | 292,674      |  |   | $       | 246,551 |  |   | $       | 201,892 |  |   | $       | 155,340 | 
|                                                           |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|FIXED CHARGES AS DEFINED(1)(4)(5)(6)                       |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|Interest, expensed                                         |                          | $        | 120,957  |              |   | $            | 111,750  |              |   | $            | 86,453  |              |  | $ | 77,781  |         |  | $ | 57,675  |         |  | $ | 49,104  |        
|Interest, capitalized                                      |                          |          | 14,419   |              |   |              | 19,938   |              |   |              | 18,190  |              |  |   | 13,235  |         |  |   | 7,926   |         |  |   | 2,928   |        
|Amortization of debt discounts, premium and expense        |                          |          | 3,118    |              |   |              | 2,869    |              |   |              | 2,426   |              |  |   | 2,217   |         |  |   | 1,641   |         |  |   | 1,332   |        
|Interest implicit in rentals                               |                          |          | 2,501    |              |   |              | 2,554    |              |   |              | 2,181   |              |  |   | 2,339   |         |  |   | 2,325   |         |  |   | 1,904   |        
|Preferred securities dividend requirements of subsidiaries |                          |          | 38,055   |              |   |              | 36,370   |              |   |              | 31,090  |              |  |   | 12,390  |         |  |   | 9,699   |         |  |   | 2,194   |        
|                                                           |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|                                                           | Fixed charges as defined |          | $        | 179,050      |   |              | $        | 173,481      |   |              | $       | 140,340      |  |   | $       | 107,962 |  |   | $       | 79,266  |  |   | $       | 57,462  | 
|                                                           |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|Ratio of Earnings to Fixed Charges                         |                          |          |          |              |   |              |          |              |   |              | 2.09    |              |  |   | 2.28    |         |  |   | 2.55    |         |  |   | 2.70    |        
|                                                           |                          |          |          |              |   |              |          |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
|Coverage Deficiency(9)(10)                                 |                          | $        | 282,913  |              |   | $            | 512,715  |              |   |              |         |              |  |   |         |         |  |   |         |         |  |   |         |        
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| | (1) | Earnings and fixed charges are defined and computed in accordance
	 with Item 503 of Regulation S-K.                                                                                                                                                                                                                                           
| | (2) | This amount represents the aggregate of (a) the pre-tax
	income from continuing operations of MCN and its majority-owned
	subsidiaries, (b) MCNs share of pre-tax income of its
	50% owned companies, and (c)  any income actually received
	from less than 50% owned companies.                                                              
| | (3) | Fixed charges added to earnings are adjusted to exclude interest
	capitalized during the period for nonutility companies and the
	preferred securities dividend requirements of MichCon included in
	 fixed charges but not deducted in the determination of pre-tax
	income.                                                                  
| | (4) | Fixed charges represent (a) interest, whether expensed or
	capitalized, (b)  amortization of debt discount, premium and
	 expense, (c) an estimate of interest implicit in rentals,
	and (d) preferred securities dividend requirements of
	subsidiaries, increased to reflect the pre-tax earnings
	requirement for MichCon.                  
| | (5) | In June 1996, MCN completed the sale of The Genix Group, its
	 computer operations subsidiary. For purposes of calculating the
	Ratio of Earnings to Fixed Charges, it has been classified as a
	discontinued operation and therefore excluded from the ratio for
	all periods presented.                                                      
| | (6) | The E&P segment has been reclassified from discontinued
	operations to continuing operations as described in Note 6 to the
	 Consolidated Financial Statements included herein. Therefore,
	for purposes of calculating the Ratio of Earnings to Fixed
	Charges, E&P financial information is included in the ratio
	for all periods presented.
| | (7) | For the twelve-month period ended June 30, 1999, MCN
	recorded several unusual charges, consisting of property
	write-downs, investment losses, restructuring charges and losses
	on sale of properties, totaling $396,050,000 pre-tax
	($252,511,000 net of taxes and minority interest).                                                     
| | (8) | For the twelve-month period ended December 31, 1998, MCN
	recorded several unusual charges, consisting of property
	write-downs, investment losses and restructuring charges,
	totaling $606,953,000 pre-tax ($389,598,000 net of taxes and
	minority interest).                                                                               
| | (9) | Earnings for the twelve-month period ended June 30, 1999,
	were not adequate to cover fixed charges. The amount of the
	coverage deficiency was $282,913,000. The Ratio of Earnings to
	Fix Charges excluding unusual charges would have been 1.63.                                                                                            

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| | (10) | Earnings for the twelve-month period ended December 31,
	1998, were not adequate to cover fixed charges. The amount of the
	 coverage deficiency was $512,715,000. The Ratio of Earnings to
	Fix Charges excluding unusual charges would have been 1.54.