NEW YORK (Standard&Poor's) Aug. 5, 2008--Standard&Poor's Ratings Services said today that Duke Energy Corp.'s (A-/Stable/NR) $113 million asset impairment at its Crescent Resources real-estate development joint venture does not affect the company's credit profile. Duke monetized its investment in Crescent, reducing business risk and eliminating funding obligations, and is now an equity owner. While the impairment indicates that lower distributions are likely in the future, such distributions are not material to Duke Energy to support its financial risk profile.