NEW YORK (Standard&Poor's) Sept. 13, 2006--Standard&Poor's Ratings Services said today that it affirmed its 'BBB' corporate credit ratings on Duke Energy and all its subsidiaries, including Complete ratings information is available to subscribers of RatingsDirect, the real-time Web-based source for Standard&Poor's credit ratings, research, and risk analysis, at www.ratingsdirect.com. All ratings affected by this rating action can be found on Standard&Poor's public Web site at www.standardandpoors.com; under Credit Ratings in the left navigation bar, select Find a Rating, then Credit Ratings Search.