The Electricity Trust of South Australia is to spend $500,000 on a 12-month feasibility study of a 5 MW wind farm that would provide power for the national grid. State Industry Minister John Olsen said, in a late June announcement, that extensive research into wind resources had been conducted by the trust and the Mines and Energy Department since the 1980s -- and that South Australia is known to have a good wind resource with a number of suitable sites that are close to existing transmission lines. The trust will study site selection, design, cost and financing of the project, which would be Australia's largest and the first to be connected to a power grid. "Wind is one of the cheapest renewable energy sources and it has a minimal impact on the environment producing no carbon dioxide," said Olsen. The results of the feasibility study are expected next June.