The proposal, triple the size of the Lake Bonney Windfarm, involves up to 300 turbines producing 600 megawatts of energy - enough to power 132,000 homes.

The Woakwine Range stretches from Carpenter Rocks in the south to Mount Benson near Kingston and is already home to two windfarms.

Michael McCourt, of Beachport, is heading the project on behalf of 30 farmers with a company called Robe Wind that is currently seeking expressions of interest.

Mr McCourt said yesterday the new company had been established after talks involving 30 landholders between Beachport and Mount Benson.

"These landholders, working collectively as one land aggregation, are taking positive and proactive steps to create a renewable energy development to assist with the reversal of climate change impacts on the region," Mr McCourt said.

"The long-term drivers for the wind generation industry continue to strengthen and paint a positive picture for Robe Wind.

"These drivers include the Federal Government legislated responses to climate change, concerns of security of supply, the high prices of fossil fuel and electricity prices."

Mr McCourt, who is chairman of the company, said strong demand for energy, rising electricity costs and Federal Government support for renewable energy investment "is giving our company a huge boost".

"Robe Wind is proposing that there could be a further two to three hundred turbines along the Woakwine Range between Beachport and Mount Benson generating 600 megawatts of clean green energy," Mr McCourt said.

"As a category one prime wind site, this new project could potentially be the largest wind farm development in Australia."

Mr McCourt said Robe Wind had advertised and was currently seeking expressions of interest from interested parties to work together on the wind farm project.

"Preliminary discussions have already been held with (several) interested companies," he said.

Expressions of interest close on January 16.

The Lake Bonney windfarm, owned by Babcock and Brown, was a $600m project involving 99 turbines producing enough power each year for about 44,000 houses.

It boasts an annual saving of 200,000 tonnes of greenhouse emissions and is the largest windfarm in Australia.

The Canunda Windfarm, owned by International Power, was a $92.5m project involving 23 turbines, capable of generating 46 megawatts of power.

The Federal Government has invested $3.8b into climate change since the 2007-08 budget.