EXHIBIT (21)(b) EXHIBIT 21(b) SUBSIDIARIES OF CONSUMERS POWER COMPANY at December 31, 1993 Percent Voting Stock Owned by CMS Energy Incorporated -------------- ------------ ES Services Company 100 Michigan Huron Hydrocarbons, Inc. 100 Michigan Michigan Gas Storage Company 100 Michigan Midland Group, Ltd. ("Midland Group") 100 Michigan CMS Midland Holdings Company 0 Michigan (100% Owned by Midland Group) CMS Midland, Inc. 0 Michigan (100% Owned by Midland Group) MEC Development Corp. 0 Michigan (100% Owned by Midland Group) Sheridan Leasing Corporation ("Sheridan") 100 Delaware