NEW YORK (Standard&Poor's) Sept. 29, 2006--Standard&Poor's Rating Services said today that it affirmed its 'BBB+' corporate credit rating on regulated utility Southern California Edison Co. (SCE) and lowered the corporate credit rating on its parent Edison International to 'BBB-' from 'BBB'. The outlook on the Rosemead, Calif-based holding company, Edison International, and its utility SCE is stable. "The downgrade of Edison International reflects the company's strategic shift toward growth through its unregulated units to benefit shareholders," said Standard&Poor's credit analyst David Bodek. Because management is now receptive to the flow of capital from Edison International and Edison Capital to its Edison Mission Energy unit, Standard&Poor's views the credit quality of Edison International