TransAlta Corporation (TransAlta) is a non-regulated electricity generation and energy marketing company with an aggregate net ownership interest of approximately 8,730 megawatts of generating capacity. The Company is engaged in the production and sale of electric energy. TransAlta is organized into seven segments: Canadian Coal, U.S. Coal, Gas, Wind and Solar, Hydro, Energy Marketing and Corporate. The Canadian Coal, U.S. Coal, Gas, Wind and Solar, and Hydro segments are responsible for constructing, operating and maintaining its electrical generation. The Canadian Coal segment is also responsible for the operation and maintenance of the Company's related mining operations in Canada. The Energy Marketing segment is responsible for marketing its production through short-term and long-term contracts. The Company operates facilities having approximately 10,208 megawatts of aggregate generating capacity.