“The amount of blades coming to their end of life is going to be phenomenal over the next 20 to 30 years.”
his spring, researchers at a quarry near Draperstown, Northern Ireland, undertook what amounted to a massively scaled up version of the type of science experiment you might see in a middle school classroom. Using a crane, researchers added huge concrete blocks—each 2,400 lbs.—to a footbridge to see how much weight it could hold.
Figuring out what to do with used wind turbine blades is a weak point in the rollout of renewable energy. About 85-90% of the components of most wind turbines—including the steel tower, the gears and generator assembly, and the concrete base—can be recycled.
Wind turbines are one of the safest and most cost effective ways to generate electricity without the use of fossil fuels. If the world is to reach net-zero emissions and avert catastrophic climate change, they’re going to play a big part. That will also entail solving the problem of what to do with used turbines when they wear out .
That’s an issue, though it’s important to keep things in perspective; 8.6 million metric tons of world wind waste is a lot, but it’s also a drop in the bucket compared to theof trash that the United States alone produces every year. Still, the image of today’s clean energy becoming tomorrow’s landfill isn’t exactly a publicity coup for renewable energy. And as long as the world is trying to roll out green energy, it seems that it would make sense for that energy to be truly renewable.
Founded in 2018, Re-Wind among other groups has been experimenting with ways to put leftover wind turbine blades to use. Pedestrian bridges are one idea: the group has built one bridge in Northern Ireland and another in the Republic of Ireland, with a third planned in the U.S. in Atlanta, Ga. Other projects have seen old wind turbine blades transformed into
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