Private equity investors Matrix Group and CJS Capital Partners have sold Irish wind power business Trinergy in a trade buyout that is one of the world's largest clean technology exits to date as investor appetite for renewable energy soars.

Trinergy was sold to UK-based energy supplier International Power for an enterprise value of €1.8bn ($2.5bn), including €868m of equity after the Royal Bank of Canada was mandated earlier this year to sell the business which was created by Matrix and CJS in 2004. Trinergy manages and operates wind farms in Germany and Italy.