TORONTO (Standard & Poor's) Sept. 21, 2006--Standard & Poor's Ratings Services today assigned its 'A-' rating to AltaLink, L.P.'s C$150 million senior secured notes due 2036. Proceeds from the notes will be used to repay CP outstanding. The amount of CP outstanding as of Sept. 20, 2006, was C$169 million. The corporate credit rating on AltaLink is 'A-'. The rating outlook is stable. The company had about $683 million of lease-adjusted debt outstanding at June 30, 2006. "AltaLink's credit profile benefits from low-risk, electricity transmission assets, an attractive service area with favorable economic fundamentals, and the relatively supportive regulatory environment and market framework for transmission companies in the Province of Alberta. These strengths are offset by a financial profile constrained