The Canada-based company operates 165MW of wind and solar capacity in the US states of California and Arizona.

It is also developing the 30MW Yabucoa PV project in Puerto Rico, for which it has a 20-year power purchase deal.

Western Wind is targeting large US energy companies and utilities as potential purchasers

The company plans to close financing and start construction at Yabucoa before a sale is completed, which Western Wind says will add $160m to its balance sheet, bringing it to about $560m.

Yabucoa