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DTE ENERGY EXTENDS GIS SERVICES CONTRACT WITH WIND LAKE SOLUTIONS

Wind Lake Solutions, Inc. - (WLS) Mukwonago, Wisconsin, is pleased to announce that DTE Energy has awarded a three-year GIS data maintenance services contract extension to Wind Lake Solutions.

WLS will continue to provide work order processing and data quality assurance services to DTE Energy's MichCon Gas subsidiary through the end of 2009. WLS will complete placement and repair work orders for mains and services in all four of MichCon's operating areas. The work will be completed at WLS' Wisconsin office by directly accessing DTE Energy's ESRI ArcGIS environment and using DTE Energy's ArcFM editing tools. WLS will also provide other vital services such as work order research, inventory data entry, records sorting and work order sketch printing.

Barbara Saunders, DTE Supervisor - Data Integrity and Technology stated "DTE Energy- Gas is pleased to continue our working relationship with WLS. Their ability to augment our internal staff to support our corporate Enterprise Business System implementation while meeting the requirements of the MPSC (Michigan Public Service Commission) is critical to our success and ability to meet or exceed our customers' needs."

David Coates, CEO of Wind Lake Solutions said, "Our relationship with DTE is the ultimate example of how we strive to do business at Wind Lake. We have a solid, long-term partnership with this customer and we have been able to provide DTE with a variety of GIS services, not just in the area of data maintenance, because we understand their operations and business objectives so well. This is a real credit to the approach that management at DTE has taken in optimizing our relationship. We are very grateful for this three year vote of confidence from MichCon."

For more information please contact Susan Smith-Lee of Wind Lake Solutions at (262) 363-4800 ext. 225 or via e-mail at ssmithlee@windlakesolutions.com.

ABOUT DTE ENERGY

DTE Energy Co. (NYSE: DTE) is a Detroit-based, diversified energy company involved in the development and management of energy-related businesses and services nationwide. Its combined electric and natural gas utilities create a premier regional energy provider. DTE Energy's largest operating subsidiaries are Detroit Edison, an investor-owned electric utility serving 2.1 million customers in Southeastern Michigan, and Michigan Consolidated Gas Co. (MichCon), a natural gas utility serving 1.2 million customers in Michigan.