Today, blades can be 351 feet, longer than the height of the Statue of Liberty, and produce 15,000 kW of power. Modern blades are made from carbon-fiber and can withstand more stress due to higher strength properties.
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Although the global wind energy sector had a record-breaking year in 2024, growth is still happening too slowly to meet targets The Global Wind Energy Council's 2025 report shows record installations but warns that trade barriers, grid constraints and policy are slowing.
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While the tower is a heavy-duty, tubular steel support, the blades consist of E-glass fiberglass mixed with a binding polymer. The composite is lightweight yet strong, allowing the blade to spin with less wind force and reducing stress on the tower.
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Since the blades rotate relatively slowly (10-20 revolutions per minute), the gearbox increases the rotation speed significantly to power a generator.
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