TOKYO (AFX-ASIA) – Moody’s Investors Service said it has assigned an Aa3 rating to the Tokyo Electric Power Co (TEPCO)’s 50 billion yen, 0.62% bonds due 2008, with the rating outlook stable. (US$1=110 yen) Moody’s said the rating reflects TEPCO’s strong franchise in its operating area that is based on Tokyo metropolitan area, its ability…