A report says more than one quarter of South Australia's electricity generation is now wind-powered.

The EnergyQuest report says wind power generated 26 per cent of SA electricity last year, compared with 3 per cent nationally.

EnergyQuest chief executive Graeme Bethune said SA had become one of the highest users of wind energy in the world.

He said more wind farms were in the planning.

"There's been an extraordinary growth in wind power in South Australia over the last five years. Five years ago it was less than 1 per cent, in 2011 it hit 26 per cent of power generation," he said.

Mr Bethune said Victoria and Tasmania had the next highest levels of wind power generation.