DTE Energy Holding Co was incorporated in 1995 in the State of Michigan. The Company is engaged in utility operations. Its segments include electric, gas, and non-utility operations. The Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution and sale of electricity to approximately 2.1 million residential, commercial and industrial customers in southeastern Michigan. The Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution and sale of natural gas to approximately 1.2 million residential, commercial and industrial customers throughout Michigan and the sale of gas storage and transportation capacity. Non-utility segment is involved in natural gas pipelines, gathering and storage; power and industrial projects; and energy marketing and trading operations. Gas Storage and Pipelines consists of natural gas pipelines, gathering and storage businesses. Power and Industrial Projects is comprised of projects that deliver energy and utility-type products and services to industrial, commercial and institutional customers, produce reduced emissions fuel and sell electricity from renewable energy projects. Energy Trading consists of energy marketing and trading operations. Competition in the regulated electric distribution business is from the on-site generation of industrial customers and from distributed generation applications by industrial and commercial customers. Competition in the gas business involves other natural gas transportation providers, as well as providers of alternative fuels and energy sources. Its gas storage and pipelines business expects to continue its steady growth plan by expanding existing assets and developing new assets that are typically supported with long?term customer commitments. It has competition from other pipelines and storage providers. The Company is subject to extensive environmental regulation.