Composites enable the manufacture of longer, more aerodynamic and highly efficient blades. When these Composite parts reach the end of their service life of 20 years or more, their lifespan can still be extended in various ways.
If a blade is in good condition, it could be prepared for reuse (on a different turbine). In other cases, a blade could be repaired to restore its functionality. However, if this is not feasible, the blades could be refurbished to produce a new product with the same function, or remanufactured into products with a different function.
These options not only delay the need for recycling but also maximise the value extracted from the original materials, and they can be repeated as necessary. If none of these options are practical, recycling through open-loop concepts allows for the intrinsic value of the composite materials to be leveraged in other applications.
Reprocessing into cement is a proven solution.
Many projects have been realised to showcase the potential for extending the useful life of wind turbine blades, demonstrating how composites can continue to provide value beyond their original purpose.
The Meidoorn playground in Rotterdam shows how repurposed blades can be used in urban design. Designed by Superuse Studios, the playground uses five decommissioned turbine blades to create a labyrinthine play area.
This creative application not only provides a dynamic play environment but also reduces environmental impact. The carbon footprint of constructing the playground is reported to be approximately 90% smaller than if conventional, virgin materials like wood and steel were used.
By refurbishing wind turbine blades, the project contributes to a circular economy by extending the life cycle of composite materials and diverting waste from landfills.
Other innovative projects have also refurbished decommissioned wind turbine blades into functional public infrastructure.
For example, ReBlade, a UK-based company specialising in wind turbine decommissioning, has collaborated with renewable energy firms to transform old blades into structures like bus shelters, benches and bike racks. This diverts waste from landfills but also provides durable and sustainable solutions for community spaces.
These provide compelling examples of how de-commissioned wind turbine blades can be transformed into a valuable community asset, demonstrating the potential for sustainable design practices in urban environments.
