Company Overview Visit cmsenergy.com website
CMS Energy is a major utility company focusing on electricity and natural gas. It offers a variety of services to approximately 4 million customers in four Midwest states.
Originally founded as Consumers Power Company, CMS Energy has been an energy provider in the United States for more than 100 years, starting when it was established in 1890. Consumers Power merged with Michigan Consolidated Gas in 1955 to become Consumers Energy, which in turn rebranded in 1997 to CMS Energy.
CMS currently employs about 3,150 people.