LEE is the largest and most severe category of blade defect. Despite data pointing to high incidence numbers, blades are not repaired frequently enough.
Energy loss from LEE has become increasingly important as modern wind turbines operate at higher tip speeds. Initial damage can occur within a few years, and grow as fast as one damage category per year. This can result in revenue loss of tens of thousands of dollars per year.
Now imagine that exact scenario across your entire fleet.
The delay in repairing LEE can cost millions in lost production revenue across your entire fleet.