EXHIBIT (23)(f)



            Consent of Independent Registered Public Accounting Firm


We consent to the reference to our firm under the caption "Experts" in the
Registration Statement on Form S-3 and the related Prospectus of CMS Energy
Corporation dated September 24, 2004 for the registration of 5,000,000 shares of
4.5% Cumulative Convertible Preferred Stock and to the incorporation by
reference therein of our report dated June 27, 2004 with respect to the
financial statements of Emirates CMS Power Company PJSC for the year ended
December 31, 2003 included in CMS Energy Corporation's Annual Report (Form
10-K/A) for the year ended December 31, 2003 filed with the Securities and
Exchange Commission.


                                                              /s/ Ernst & Young


Abu Dhabi, United Arab Emirates
September 20, 2004