Energy Minister Eric Ripper said after the completion of the new wind farm - which should be ready by the middle of next year - more than 20% of Esperance's electricity would come from clean wind energy.

State-owned Western Power will build the $10.6 million facility, to be known as the 'Nine-Mile Beach Wind Farm', adjacent to the successful 'Ten-Mile Lagoon Wind Farm', which it built nearly 10 years ago.

"This is a very satisfying result for Western Power, which in the eighties led Australia into the wind energy scene with the nation's first commercial wind farm at Salmon Beach, also near Esperance," Mr Ripper said.

"Western Power has developed first-class expertise in this specialised field of renewable energy.

"All the environmental, development and internal Western Power approvals have been received for the Nine Mile Beach Wind Farm project and earthworks start on the site within the next week."

The wind farm's six wind turbines will be capable of producing a total of 3.6 megawatts (MW). Ten-Mile Lagoon Wind Farm capacity was 2MW.

Nine Mile Beach Wind Farm's 600-kilowatt wind turbines are some of the most popular and reliable machines in the world. There are several thousand of them operating - mostly in Europe. Each turbine will sit on a 46m tall tower and carry three 22m-long blades.

An advanced computerised management system to be installed at the existing power station by Northern Territory company Powercorp will control the new wind farm. Experienced German company ENERCON, one of the biggest wind turbine manufacturers in the world, is building the turbines.

These two companies were suppliers for the Albany wind farm, which was also built by Western Power.