How New Wind Turbines Produce Far More Energy

Source: By Kevin Hand, Wall Street Journal • Posted: Tuesday, May 18, 2021

Lighter materials and improved design have enabled blades to get much longer and more efficient at capturing the wind

Wind turbines have become bigger, more powerful, and more cost-efficient to operate in recent decades.

A key improvement has been modern blades that are far more sophisticated in design, from aerodynamic properties to materials. This has enabled a variety of other improvements to the turbine, including greater size and more height (which means the turbine can tap higher wind speeds), with less noise.

Here’s how the blades have evolved and some key changes that have enabled the scaling up.