TransAlta Commissions Ontario Plant

CALGARY, AB -- - TransAlta Corporation has officially begun commercial operation of its new 440-megawatt (MW) gas-fired facility at its Sarnia Regional Cogeneration Plant located in Sarnia, Ontario. The new facility is integrated with 135 MW from the facilities TransAlta acquired last year. The 575-MW, $490 million gas-fired plant is supplying steam and electricity to the TransAlta host customers as well as electricity into regional wholesale markets.

"TransAlta was the first private sector investor to build new power generation in Ontario," said Steve Snyder, TransAlta's President and CEO. "Now that our Sarnia plant is fully operational, we'll focus on operating it efficiently to provide our customers with a reliable, low-cost source of power and steam while selling additional power into regional wholesale markets." TransAlta acquired the existing facilities on Oct. 7, 2002, including two gas turbines and five steam turbines. The facilities, with 135 MW of net capacity, are located on the industrial sites of Bayer Inc. and Dow Chemical Canada Inc. In March 2001, TransAlta started construction of the 440-MW new facility that includes three gas turbines and two steam turbines. TransAlta employed 450 people during construction and will employ 60 full time workers to oversee plant operations. TransAlta has contracted up to approximately 216 MW of capacity to Bayer Inc., Dow Chemical Canada Inc., NOVA Chemicals (Canada) Ltd. and Suncor Energy Products Inc. An additional 75 MW has also been contracted over the next three years. The remaining capacity will be sold through bilateral contracts or into regional wholesale markets. In addition, all steam is sold under 20-year contracts to Bayer, Dow, NOVA and Suncor. TransAlta is Canada's largest non-regulated power generation and wholesale marketing company. We have close to $9 billion in coal-fired, gas-fired, hydro and renewable generation assets in Canada, the U.S. Mexico and Australia. With approximately 10,000 megawatts of capacity either in operation, under construction or in development, our focus is to efficiently operate our assets in order to provide our wholesale customers with a reliable, low-cost source of power.

TransAlta acquired the existing facilities on Oct. 7, 2002, including two gas turbines and five steam turbines. The facilities, with 135 MW of net capacity, are located on the industrial sites of Bayer Inc. and Dow Chemical Canada Inc. In March 2001, TransAlta started construction of the 440-MW new facility that includes three gas turbines and two steam turbines. TransAlta employed 450 people during construction and will employ 60 full time workers to oversee plant operations.

TransAlta has contracted up to approximately 216 MW of capacity to Bayer Inc., Dow Chemical Canada Inc., NOVA Chemicals (Canada) Ltd. and Suncor Energy Products Inc. An additional 75 MW has also been contracted over the next three years. The remaining capacity will be sold through bilateral contracts or into regional wholesale markets. In addition, all steam is sold under 20-year contracts to Bayer, Dow, NOVA and Suncor.

TransAlta is Canada's largest non-regulated power generation and wholesale marketing company. We have close to $9 billion in coal-fired, gas-fired, hydro and renewable generation assets in Canada, the U.S. Mexico and Australia. With approximately 10,000 megawatts of capacity either in operation, under construction or in development, our focus is to efficiently operate our assets in order to provide our wholesale customers with a reliable, low-cost source of power.