Standard&Poor's Ratings Services assigned its 'AA' rating to San Antonio City Public Service's (CPS) proposed $393.555 million senior lien electric and gas revenue series 2006A bonds. CPS will use the proceeds to fund infrastructure improvements. At the same time, Standard&Poor's affirmed its 'AA' rating on CPS' $2.56 billion senior lien electric and gas revenue and refunding bonds, its 'AA-/A-1+' rating on CPS' $407 million electric and gas systems junior lien revenue bonds, and its 'A-1+' rating on CPS' commercial paper program. The commercial paper rating is linked to CPS long-term debt rating. The rating on CPS reflects the following strengths: Strong economy Economic resource mix Astute management, and Monopoly on energy supply. The strengths are offset