TORONTO (Standard&Poor's) May 25, 2007--Standard&Poor's Ratings Services today said it affirmed its 'A-' long-term corporate credit and senior secured debt ratings on AltaLink, L.P. At the same time, Standard&Poor's affirmed its 'BBB-' long-term corporate credit rating and senior unsecured debt ratings on parent company AltaLink Investments L.P. (AILP; BBB-/Stable/--). The outlook on both entities is stable. "The ratings on AltaLink reflect the company's strong business risk and intermediate financial risk profiles," said Standard&Poor's credit analyst Kenton Freitag. "These strengths are offset by capital funding requirements to meet significant network growth in the next three years," Mr. Freitag added. AltaLink's credit profile benefits from low-risk, regulated electricity transmission assets, an attractive service area