Wind turbines spend decades generating clean electricity, but their blades pose a difficult waste problem once they stop turning. Built from fiberglass that is expensive to break down, these components can end up in landfills even though much of the rest of a turbine is recyclable.

Concrete and cement production offer a way to put that waste back to work. Recycling companies have found methods to recycle around 85% of a blade, recovering materials that can replace cement ingredients, provide kiln fuel, or reinforce concrete.

As existing wind farms age, these approaches could help address blade disposal while reducing emissions from another carbon-intensive industry.

A wind turbine typically has a service life of around 20–30 years. However, its blades do not always remain in operation for that entire period. Damage can force an earlier replacement, while technological advances can encourage operators to swap older equipment for newer designs.

Much of a retired turbine can be recycled, with old equipment also providing recoverable metals. The blades present a different challenge because their fiberglass construction makes processing difficult and costly.

That cost helps explain why discarded blades end up in landfills. Their ability to generate clean energy does not make their eventual disposal straightforward.

Recycling them for construction gives the recovered material another purpose. Rather than treating the entire blade as waste, processors can break it down and recover ingredients and fibers useful in cement and concrete production.

The distinction between those two products matters. Cement is an ingredient used to make concrete, so recycled blade material can enter the construction process in different ways depending on how it is processed.

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