Aging Blades, Shrinking Output: What Field Data Reveals About Long-Term Wind Turbine Performance Decline
Wind turbine blades are engineered to maintain performance across decades of continuous operation, yet field measurements from US wind farms consistently show efficiency losses that outpace manufacturer projections. Environmental wear, material fatigue, and surface contamination compound over time in ways that laboratory models struggle to anticipate. Understanding the true rate of this degradation is essential for operators seeking to protect long-term energy output.