TransAlta Corporation (TransAlta) is engaged in the production and sale of electric energy. The Company is organized into three business segments: Generation, Energy Marketing and Corporate. The Generation segment is responsible for constructing, operating and maintaining the Company's electricity generation, as well as the operation and maintenance of its related mining operations in Canada. The Energy Marketing segment is responsible for marketing its production through short-term and long-term contracts. The Energy Marketing segment also encompasses the management of available generating capacity, as well as the fuel and transmission needs of the Generation business. The Corporate segment provides finance, tax, treasury, legal, regulatory, environmental, health and safety, sustainable development, corporate communications, government and investor relations, procurement, information technology, risk management, human resources, internal audit and other administrative services.