NEW YORK (Standard&Poor's) March 24, 2006--Standard&Poor's Ratings Services said today that the announcement regarding a potential rate cut for Detroit Edison Co. (BBB/Stable/A-2) does not affect the ratings on parent DTE Energy Co. (BBB/Stable/A-2) and its subsidiaries at this time. The Michigan Public Service Commission, which granted a $330 million rate increase in November 2004, is now considering a rate decrease due to a number of significant events that may cause Detroit Edison to earn more than expected. In our opinion, a rate decrease could erode the company's financial profile to a level not consistent with current ratings. Furthermore, a driving factor for DTE's stable outlook is advancing a constructive regulatory agenda.