News release from Vestas Wind Systems A/S
Aarhus, 8 February 2023

Vestas is presenting a new solution that renders epoxy-based turbine blades as circular, without the need for changing the design or composition of blade material. Combining newly discovered chemical technology developed within the CETEC initiative, and partnerships with Olin and Stena Recycling, the solution can be applied to blades currently in operation. Once matured, this will eliminate the need for blade redesign, or landfill disposal of epoxy-based blades when they are decommissioned.

“Until now, the wind industry has believed that turbine blade material calls for a new approach to design and manufacture to be either recyclable, or beyond this, circular, at end of life. Going forward, we can now view old epoxy-based blades as a source of raw material. Once this new technology is implemented at scale, legacy blade material currently sitting in landfill, as well as blade material in active windfarms, can be disassembled, and re-used. This signals a new era for the wind industry, and accelerates our journey towards achieving circularity,” says Lisa Ekstrand, Vice President and Head of Sustainability at Vestas.

Turbine blades have previously been challenging to recycle due to the chemical properties of epoxy resin, a resilient substance that was believed to be impossible to break down into re-usable components. This has led to many technology leaders attempting to replace or modify epoxy resin with alternatives that can be more easily treated. Vestas’ solution is enabled by a novel chemical process that can chemically break down epoxy resin into virgin-grade materials. The chemical process was developed in collaboration with Aarhus University, Danish Technological Institute, and Olin the partners of the CETEC project, a coalition of industry and academia established to investigate circular technology for turbine blades.

“The newly discovered chemical process shows that epoxy-based turbine blades, whether in operation or sitting in landfill, can be turned into a source of raw material to potentially build new turbine blades. As the chemical process relies on widely available chemicals, it is highly compatible for industrialisation, and can therefore be scaled up quickly. This innovation would not have been possible without the ground-breaking CETEC collaboration between industry and academia enabling our progress until this point,” says Mie Elholm Birkbak, Specialist, Innovation & Concepts at Vestas. 

Through a newly established value chain, supported by Nordic recycling leader Stena Recycl