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

By Kevin Hand
May 16, 2021 10:00 am ET

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…

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