Financial terms of the deal, among the largest in the US in recent years, were not made public. Major construction is slated to begin in 2015 with targeted completion in 2016.

The Four Brothers development comprises four separate fully permitted 80MW (AC) project sites in southwestern Utah.

“These additional long-term contracts with Rocky Mountain Power will enable us to move forward quickly with what will be the largest solar development in Utah, and our largest solar project to date,” says First Wind chief executive Paul Gaynor.

The