Calpine Corporation and Mitsui & Co. Ltd (Mitsui) have jointly entered into a contract with the Ontario Power Authority (OPA) to provide clean energy from a new 1005MW natural gas-fired power plant. The plant, called the Greenfield Energy Centre, will be located in Courtright, St Clair Township, near Sarnia, Ontario. The project will be owned by Greenfield Energy Centre LP, a partnership between Calpine and Mitsui, and will use modern, combined-cycle technology. The Clean Energy Contract was awarded to Calpine/Mitsui through the Ontario Ministry of Energy’s recent open and competitive request for proposals for 2500MW of new, clean energy. Fueled by natural gas, the Greenfield Energy Centre will include three combustion turbines and one steam turbine. The facility will deliver electricity directly to Ontario’s transmission grid, at a time when the province is in great need of additional clean generating resources to meet its rapidly growing electricity requirements. Calpine and Mitsui are each 50% partners in the project. Construction of the Greenfield Energy Centre is expected to begin in December 2005, after the completion of on-going environmental studies and permitting and other required approvals.