CMS Energy Corporation is a Jackson, Michigan-based energy company focused principally on utility operations in Michigan. Founded in 1886, it operates through Electric Utility, Gas Utility and NorthStar Clean Energy activities. Garrick J. Rochow is chief executive officer, and the company has 8,350 employees.
Its principal utility business, Consumers Energy, supplies electricity and natural gas across Michigan. The company serves 1.9 million electric customers and 1.8 million gas customers, spanning residential, commercial and diversified industrial users. Its electric operations encompass power generation, purchases, distribution and sales, while its gas utility purchases, transports, stores, distributes and sells natural gas.
CMS Energy’s electric generation uses coal, wind, gas, renewable energy, oil and nuclear sources. Its utility infrastructure includes electric transmission and distribution lines, substations, gas transmission lines, distribution mains, storage fields and compressor stations. Outside its regulated utility activities, NorthStar Clean Energy develops and operates renewable generation and conducts independent power production, marketing and natural gas transmission.