DTE Energy Co operates as a diversified energy company which engages in the development and management of energyrelated businesses and services It operates through the following segments Electric Gas DTE Vantage Energy Trading and Corporate and Other The Electric segment consists of generation purchase distribution and sale of electricity to residential commercial and industrial customers in southeastern Michigan The Gas segment is involved in the purchase storage transportation distribution and sale of natural gas to residential commercial and industrial customers throughout Michigan and the sale of storage and transportation capacity The DTE Vantage segment focuses on projects that deliver energy and utilitytype products and services to industrial commercial and institutional customers produce reduced emissions fuel and sell electricity and pipelinequality gas from renewable energy projects The Energy Trading segment covers energy marketing and trading operations The Corporate and Other segment includes various holding company activities holds certain nonutility debt and holds certain investments as well as funds supporting regional development and economic growth The company was founded in January 1995 and is headquartered in Detroit MI