The dirty side to wind power - they don't last forever. Quite a short lifetime actually. From the Cowboy State Daily:
Wind turbine blades being disposed of in Casper landfill
The Casper landfill will soon be the home of more than 1,000 decommissioned wind turbine blades and motor housing units.
According to Cindie Langston, solid waste manager for the Casper Regional Landfill, the materials will be deposited in an area of the landfill designed to hold construction and demolition material.
CRL is one of the few landfills with the proper permits and certifications to accept the decommissioned turbine materials.
The turbine disposal project, which started this summer, is slated to continue until the spring of 2020, bringing the CRL estimated revenue of $675,485. Such “special waste projects” bring in about $800,000 a year, which helps keep CRL rates low, Langston said.
The turbines last about 20 years and are then completely taken down - no option to rebuild. Not exactly renewable.
Fiberglass parts can be ground up and recycled. Not easy -