CALGARY, ALBERTA--(Marketwire - Nov. 9, 2009) - TransAlta Corporation TA ; TAC ("TransAlta") today announced it has priced an offering of US$500.0 million in aggregate principal amount of its 4.75% senior notes due 2015 at an issue price equal to 99.783% of the principal amount of the notes. TransAlta intends to use the net proceeds from the offering to repay a portion of the indebtedness relating to its acquisition of Canadian Hydro Developers, Inc. The notes are expected to be rated BBB by Standard & Poor's Rating Services, a division of McGraw-Hill, Inc., and Baa2 by Moody's Investor Service Inc. A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time. RBC Capital Markets Corporation, HSBC Securities ( USA ) Inc. and RBS Securities Inc. acted as joint book-running managers for the offering.