CMS Energy is a holding company. Through its subsidiaries, Co. is an energy company. Co.'s subsidiaries include Consumers Energy Company, which is an electric and gas utility; and CMS Enterprises Company, which is a power producer and marketer. Co.'s segments are: electric utility, which includes the generation, purchase, distribution, and sale of electricity; gas utility, which includes the purchase, transmission, storage, distribution, and sale of natural gas; and enterprises, its non-utility operations and investments, which engages in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production.

Preferreds: CMS.PRB, CMS.PRA, CMS.PRC