DTE Energy Co. (DTE) is an energy company. The Company operates in four segments: Electric, Gas, Non-utility Operations, and Corporate and others. The Company�s utility operations consist primarily of DTE Electric and DTE Gas. DTE Electric is engaged in the generation, purchase, distribution and sale of electricity to customers. DTE Gas is engaged in the purchase, storage, transportation, distribution and sale of natural gas to customers, and the sale of storage and transportation capacity. Gas Storage and Pipelines consists of natural gas pipelines, gathering and storage businesses. Power and Industrial Projects consists of projects that deliver energy and utility-type products and services to industrial, commercial and institutional customers. Energy Trading consists of energy marketing and trading operations. Corporate and other includes various holding company activities, holds certain non-utility debt and energy-related investments.