DTE Energy Company operates utility businesses. Its Electric segment generates, purchases, distributes, and sells electricity to about 2.2 million residential, commercial, and industrial customers in southeastern Michigan, using fossil-fuel, hydroelectric pumped storage, nuclear, wind, and other renewable assets. The Gas segment purchases, stores, transports, distributes, and sells natural gas to approximately 1.3 million customers in Michigan, and also sells storage and transportation capacity. The company also has Gas Storage and Pipelines, Power and Industrial Projects, and Energy Trading segments. DTE Energy was founded in 1903 and is headquartered in Detroit, Michigan.