Thankfully, someone is thinking about what to do with all those decommissioned wind turbine blades. They’re difficult to repurpose, usually being composed of nonrecyclable materials like fiberglass, according to New Atlas.

And, the National Renewable Energy Laboratory estimates that between 3,000 and 9,000 blades will be retired in the United States within the next five years, then from 10,000 to 20,000 until 2040. But what about everywhere else? For instance, an enormous turbine being constructed in China has a blade diameter of 1,107 feet.

A Lanzhou Institute of Chemical Physics at the Chinese Academy of Sciences team figured out how to crush and treat turbine blades so they can be mixed into asphalt and concrete for roadbuilding, and a test section of highway was built last year. So far, so good; there are no cracks yet.

Carbon Rivers, in Knoxville, Tennessee, reclaims glass fibers from the blades that can be used in the “automotive, aerospace, marine, or construction industries.”

More locally, Global Fiberglass Solutions, in Kirkland, Washington, which claims to recycle 99% of turbine blades, turns them into “EcoPoly” pellets to create “composite panels, railroad ties, plastic composites, and more.”

Their motto: “A journey to recycle thousands of blades begins with a single blade.”