1 EXHIBIT 12 CMS ENERGY CORPORATION Ratio of Earnings to Fixed Charges (Millions of Dollars) Years Ended December 31 - 1999 1998 1997 1996 1995 ---------------------------------------------------- (b) Earnings as defined (a) Consolidated net income $ 277 $ 242 $ 244 $ 224 $ 195 Income taxes 64 100 108 137 113 Exclude equity basis subsidiaries (84) (92) (80) (85) (57) Fixed charges as defined, adjusted to exclude capitalized interest of $41, $28, $13, $5, and $4 million for the years ended December 31, 1999, 1998, 1997, 1996 and 1995, respectively 588 395 360 313 299 -------------------------------------------------- Earnings as defined $ 845 $ 645 $ 632 $ 589 $ 550 ================================================== Fixed charges as defined (a) Interest on long-term debt $ 502 $ 319 $ 273 $ 230 $ 224 Estimated interest portion of lease rental 7 8 8 10 9 Other interest charges 57 48 49 43 42 Preferred securities dividends and Distributions 96 77 67 54 42 -------------------------------------------------- Fixed charges as defined $ 662 $ 452 $ 397 $ 337 $ 317 ================================================== Ratio of earnings to fixed charges 1.28 1.43 1.59 1.75 1.74 ================================================== NOTES: (a) Earnings and fixed charges as defined in instructions for Item 503 of Regulation S-K. (b) Excludes a cumulative effect of change in accounting after-tax gain of $43 million.