Extreme weather risks in North America are forcing renewables developers to strengthen project economics at the design stage as the cost of insurance claims soars, according to global energy consultancy K2 Management.

A K2 report, Pre-Construction Projects: The battle to reduce uncertainty and improve business case bankability, identifies major project development trends in the fast-growing renewables sector, based on data gathered from some of the most innovative wind and solar projects in North America and around the world.