Steven B. Ambrose has been named vice president and chief information officer at DTE Energy, effective June 1, 2011, replacing Lynne Ellyn, who has announced her retirement.

Ambrose will be responsible for securing, operating, and applying the company's information technology assets toward achieving the company's strategic objectives.

Ambrose has been with DTE Energy for 13 years, most recently as director for enterprise performance management. He also has served as director of information technology for the company's non-utility businesses, as well as chief-of-staff to president and CEO Gerry Anderson, providing support for key enterprise initiatives.

Ambrose earned an MBA with high distinction from the University of Michigan, a Project Management Professional (PMP) certification, a master's certificate in management information systems from the University of Southern California, and a bachelor's degree in business administration from Bellevue College.

Ellyn has served as CIO since 1998. She was instrumental in successfully integrating the Detroit Edison and Michigan Consolidated Gas Co. IT organizations following the merger of the two companies in 2001, and she also has been a utility industry leader in the areas of emerging technology and cyber security.