Profile: DTE Energy Company (DTE)

DTE Energy Company, incorporated in 1995, is engaged in energy business. The Company’s utility operations consist of The Detroit Edison Company (Detroit Edison) and Michigan Consolidated Gas Company (MichCon). The Company also have four non-utility segments that are engaged in a variety of energy-related business. Detroit Edison is engaged in the generation, purchase, distribution and sale of electricity to approximately 2.2 million customers in south-eastern Michigan. MichCon is engaged in the purchase, storage, transmission, distribution and sale of natural gas to approximately 1.2 million customers throughout Michigan. The four non-utility segments are involved in gas pipelines and storage; unconventional gas exploration, development and production; power and industrial projects and coal transportation and marketing, and energy marketing and trading operations.

Electric Utility

The electric utility segment consists of Detroit Edison. The generating plants are regulated by numerous federal and state governmental agencies. Electricity is generated is generated from several fossil plants, a hydroelectric pumped storage plant and a nuclear plant, and is purchased from electricity generators, suppliers and wholesalers. The electricity produced and purchased sold to four classes of customers: residential, commercial, industrial, and wholesale, principally throughout south-eastern Michigan Detroit Edison owns generating plants and facilities that are located in the State of Michigan.

Gas Utility

The gas utility segment consists of the MichCon and Citizens. The gas distribution system has a planned maximum daily send-out capacity of 2.8 billion cubic feet of gas (Bcf), with approximately 68% of the volume coming from underground storage for 2008. The Company owns distribution, transmission and storage properties that are located in the State of Michigan. The distribution system includes approximately 19,000 miles of distribution mains, approximately 1,181,000 service lines and approximately 1,324,000 active meters. The Company owns approximately 2,000 miles of transmission lines that deliver natural gas to the distribution districts and interconnect the storage fields with the sources of supply and the market areas. It also own four carbon dioxide processing facilities. The Company own properties relating to four underground natural gas storage fields with an aggregate working gas storage capacity of approximately 132 Bcf.

The Company is directly connected to the interstate pipelines, providing access to the natural gas producing regions in the Gulf Coast, Mid-Continent and Canadian regions. It owns 830 miles of transportation and gathering (non-utility) pipelines in the northern lower peninsula of Michigan.

Gas Midstream

Gas Midstream owns partnership interests in two interstate transmission pipelines and two natural gas storage fields. The pipeline and storage assets are primarily supported by long-term, fixed-price revenue contracts. The Company have a partnership interest in the Vector Pipeline (Vector), an interstate transmission pipeline, which connects Michigan to Chicago and Ontario. It also holds partnership interests in Millennium Pipeline Company which indirectly connects southern New York State to Upper Midwest/Canadian supply, while providing transportation service into the New York City markets. The Company have storage assets in Michigan capable of storing up to 87 Bcf in natural gas storage fields located in Southeast Michigan. The Washington 10 and 28 storage facilities are storage fields having bi-directional interconnections with Vector Pipeline and MichCon providing the customers access to the Chicago, Michigan, other Midwest and Ontario market centers. The customers include various utilities, pipelines, producers and marketers.

Unconventional Gas Production

The unconventional gas production business is engaged in natural gas exploration, development and production within the Barnett shale in north Texas. During the year ended December 31, 2008, the Company added proved reserves of 23 Bcfe in the Barnett shale resulting in year-end total proved reserves of 167 Bcfe. The Barnett shale wells yielded 5 Bcfe of production in 2008. Barnett shale leasehold acres increased to 62,395 gross acres (60,435 net of interest of others) excluding impairments. The Company drilled a total of 37 wells in the Barnett shale acreage. The Barnett Shale gas production requires processing to extract natural gas liquids.

Power and Industrial Projects

The power and industrial projects are comprised of projects that deliver energy and utility-type services to steel, automotive and other industrial, commercial and institutional customers; provide coal transportation and marketing; and develop biomass energy projects. This business segment provides utility-type services using project assets usually located on or near the customers’ premises in the steel, automotive, pulp and paper, airport and other industries.

The services include pulverized coal, petroleum coke and metallurgical coke supply, power generation, steam production, chilled water production, wastewater treatment and compressed air supply. The Company owns and operates one gas-fired peaking electric generating plant, two biomass-fired electric generating plants and operate one coal-fired power plant under contract.

The Company also provide coal transportation services including fuel, transportation, storage, blending and rail equipment management services. The external customers include electric utilities, merchant power producers, integrated steel mills and industrial companies with energy requirements. Additionally, the Company participate in coal marketing and the purchase and sale of emissions credits. The Company owns and operates a coal transloading terminal in South Chicago, Illinois.

The Company develops, owns and operates landfill gas recovery systems throughout the United States. Landfill gas, a byproduct of solid waste decomposition, is composed of approximately equal portions of methane and carbon dioxide. The Company develops landfill gas recovery systems that capture the gas and provide local utilities, industry and consumers with an opportunity to use a competitive, renewable source of energy, in addition to providing environmental benefits by reducing greenhouse gas emissions. This business segment performs coal mine methane extraction, in which the Company recover methane gas from mine voids for processing and delivery to natural gas pipelines, industrial users or for small power generation projects. It also owns a coal mine methane gathering system and gas processing facility.

Energy Trading focuses on physical power and gas marketing and trading, structured transactions, improvement of returns from DTE Energy’s asset portfolio, optimization of contracted natural gas pipeline transportation and storage, and power transmission and generating capacity positions. The customer base is utilities, local distribution companies, pipelines, and other marketing and trading companies.

Corporate

The corporate and other includes various holding company activities and holds certain non-utility debt and energy-related investments. During the year ended December 31, 2007, the Company ceased its Synthetic Fuel business operations.