DTE Energy Co. is a diversified energy company, which is primarily engaged in the business of providing electricity and natural gas sales, distribution and storage services throughout Michigan through its subsidiaries. It operates through the following segments: DTE Electric, DTE Gas and Other. The DTE Electric segment is engaged in the generation, purchase, distribution and sale of electricity to residential, commercial and industrial customers in southeastern Michigan. The DTE Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution and sale of natural gas residential, commercial and industrial customers throughout Michigan and the sale of gas storage and transportation capacity. The Other segment is involved in natural gas pipelines, gathering and storage; power and industrial projects; and energy marketing and trading operations. The company was founded in January 1995 and is headquartered in Detroit, MI.