1
 
                                                                    EXHIBIT (12)
                             CMS ENERGY CORPORATION
                       RATIO OF EARNINGS TO FIXED CHARGES
                             (MILLIONS OF DOLLARS)
 
   


                                                                        YEARS ENDED DECEMBER 31
                                               THREE MONTHS    ----------------------------------------
                                                  ENDED                 
                                              MARCH 31, 1995    1994    1993    1992      1991     1990
                                              --------------    ----    ----    -----    ------    -----
                                                                        (B)     (C)(D)    (E)      
                                                                                 
EARNINGS AS DEFINED (A)
Net income.................................        $ 86         $179    $155    $(297)   $ (262)   $(494)
Income taxes...............................          53           92      75     (146)      (94)      25
Exclude equity basis subsidiaries..........         (10)         (18)     (6)      10        10       13
Fixed charges as defined, adjusted to
  exclude capitalized interest of $1, $6,
  $5, $3, $5, and $38 million for the three
  months ended March 31, 1995 and for the
  years ended December 31, 1994, 1993,
  1992, 1991 and 1990, respectively........          63          214     234      217       354      306
                                                 ------         ----    ----    -----    ------    -----
Earnings as defined........................        $192         $467    $458    $(216)   $    8    $(150)
                                                 ======         ====    ====    =====    ======    =====
FIXED CHARGES AS DEFINED (A)                             
Interest on long-term debt.................        $ 56         $193    $204    $ 169    $  274    $ 293
Estimated interest portion of lease                      
  rental...................................           3            9      11       16        17       18
Other interest charges.....................           5           18      24       35        68       33
Include equity basis subsidiaries..........          --           --      --       --        --       --
                                                 ------         ----    ----    -----    ------    -----
Fixed charges as defined...................        $ 64         $220    $239    $ 220    $  359    $ 344
                                                 ======         ====    ====    =====    ======    =====
Ratio of earnings to fixed charges.........        3.00         2.12    1.92       --        --       --
                                                 ======         ====    ====    =====    ======    =====
                                                 
                                                         
                                                         
NOTES:                                                   
(a) Earnings and fixed charges as defined in instructions for Item 503 of
    Regulation S-K.
 
   
(b) For the year ended December 31, 1992, fixed charges exceeded earnings by
    $441 million. Earnings as defined include a $520 million pretax loss on the
    settlement of MCV Power Purchases, $(15) million for potential customer
    refunds and other reserves related to 1992 but recorded in 1991, and $6
    million relating to CMS Generation Company's reduction in its investment in
    The Oxford Energy Company. The ratio of earnings to fixed charges would have
    been 1.34 excluding these amounts.
    
 
(c) Excludes an extraordinary after-tax loss of $14 million.
 
   
(d) For the year ended December 31, 1991, fixed charges exceeded earnings by
    $356 million. Earnings as defined include pretax losses of $398 million for
    write-downs and reserve amounts related to the abandonment of the Midland
    nuclear plant, $76 million for potential customer refunds and other
    reserves, and $51 million relating to CMS Generation Company's reduction in
    its investment in The Oxford Energy Company. The ratio of earnings to fixed
    charges would have been 1.48 excluding these amounts.
    
 
   
(e) For the year ended December 31, 1990, fixed charges exceeded earnings by
    $500 million. Earnings as defined include pretax losses of $847 million for
    write-downs and reserve amounts related to the abandonment of the Midland
    nuclear plant. The ratio of earnings to fixed charges would have been 2.01
    excluding these amounts.
    
   2
 
                             CMS ENERGY CORPORATION
        RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDENDS
                             (MILLIONS OF DOLLARS)
 
   


                                                                
                                                                
                                               THREE MONTHS             YEARS ENDED DECEMBER 31                         
                                                  ENDED         ----------------------------------------                 
                                              MARCH 31, 1995    1994    1993    1992      1991     1990   
                                              --------------    ----    ----    -----    ------    -----  
                                                                     (B)     (C)(D)     (E) 
EARNINGS AS DEFINED (A)                                                          
Net income.................................        $ 86         $179    $155    $(297)   $ (262)   $(494)
Income taxes...............................          53           92      75     (146)      (94)      25
Exclude equity basis subsidiaries..........         (10)         (18)     (6)      10        10       13
Fixed charges as defined, adjusted to
  exclude capitalized interest of $1, $6,
  $5, $3, $5, and $38 million for the three
  months ended March 31, 1995 and for the
  years ended December 31, 1994, 1993,
  1992, 1991, and 1990, respectively.......          69          237     245      228       364      317
                                                 ------         ----    ----    -----    ------    -----
Earnings as defined........................        $198         $490    $469    $(205)   $   18    $(139)
                                                 ======         ====    ====    =====     =====    =====
FIXED CHARGES AS DEFINED (A)                              
Interest on long-term debt.................        $ 56         $193    $204    $ 169    $  274    $ 293
Estimated interest portion of lease                       
  rental...................................           3            9      11       16        17       18
Other interest charges.....................           5           18      24       35        68       33
Preferred stock dividend...................          10           36      17       16        15       17
                                                 ------         ----    ----    -----    ------    -----
Fixed charges as defined...................        $ 74         $256    $256    $ 236    $  374    $ 361
                                                 ======         ====    ====    =====     =====    =====
Ratio of earnings to fixed charges.........        2.67         1.91    1.83       --        --       --
                                                 ======         ====    ====    =====     =====    =====
                                               
    
 
NOTES:
(a) Earnings and fixed charges as defined in instructions for Item 503 of
    Regulation S-K.
 
   
(b) For the year ended December 31, 1992, fixed charges exceeded earnings by
    $441 million. Earnings as defined include a $520 million pretax loss on the
    settlement of MCV Power Purchases, $(15) million for potential customer
    refunds and other reserves related to 1992 but recorded in 1991, and $6
    million relating to CMS Generation Company's reduction in its investment in
    The Oxford Energy Company. The ratio of earnings to fixed charges would have
    been 1.30 excluding these amounts.
    
 
(c) Excludes an extraordinary after-tax loss of $14 million.
 
   
(d) For the year ended December 31, 1991, fixed charges exceeded earnings by
    $356 million. Earnings as defined include pretax losses of $398 million for
    write-downs and reserve amounts related to the abandonment of the Midland
    nuclear plant, $76 million for potential customer refunds and other
    reserves, and $51 million relating to CMS Generation Company's reduction in
    its investment in The Oxford Energy Company. The ratio of earnings to fixed
    charges would have been 1.45 excluding these amounts.
    
 
   
(e) For the year ended December 31, 1990, fixed charges exceeded earnings by
    $500 million. Earnings as defined include pretax losses of $847 million for
    write-downs and reserve amounts related to the abandonment of the Midland
    nuclear plant. The ratio of earnings to fixed charges would have been 1.96
    excluding these amounts.