AES Drax Holdings Limited Credit Rating - Moody's Ratings on over 170,000 corporate, government and structured finance securities. Events Calendar. Information about training seminars, briefings, and teleconferences. ... MOODY'S DOWNGRADES AES DRAX HOLDINGS Ltd BONDS AND INPOWER Ltd BANK LOAN FROM Baa3 TO Ba1, AND AES DRAX ENERGY Ltd NOTES FROM Ba2 TO B1.