NEW YORK (Standard&Poor's) Feb. 26, 2010--Standard&Poor's Ratings Services assigned its 'AA' long-term rating, and stable outlook, to the city of San Antonio, Texas' electric and gas systems $380 million senior-lien revenue bonds, new series 2010, and taxable new series 2010A. At the same time, Standard&Poor's affirmed its 'AA' long-term rating on San Antonio's $3.7 billion senior-lien electric and gas system revenue and refunding bonds, its 'AA-/A-1+' rating on the $402 million electric and gas systems junior lien revenue bonds, and its 'A-1+' short-term rating on the tax-exempt commercial paper (CP) program. The CP rating is linked to the long-term debt rating. The outlook is stable. "In our opinion, the rating reflects several strengths of