Wind Turbine Gearbox Recycling
Last updated: 4 April 2026
What Happens to Old Wind Turbine Gearboxes?
Last reviewed by James Hartley on 02 April 2026
Old wind turbine gearboxes end up being recycled. Wind Turbine Gearbox Recycling Refurbished, or sadly sometimes landfilled depending on the economics and regulations in place. Many gearboxes are recycled to recover valuable materials like steel, bronze, and copper. Some gearboxes that still have life left in them can be refurbished and resold as spare parts.
Recycling these components helps reduce waste and environmental impact while also providing a source of income through recovered metals and oil. Landfilling is avoided due to the high value of metal recovery and stringent regulations on lubricating oils.
According to the UN Global E-Waste Monitor 2024, The world generated 62 million tonnes of e-waste in 2022, up 82% from 2010.
How Are Wind Turbine Gearboxes Recycled?
Wind turbine gearboxes are recycled by recovering valuable materials such as steel, bronze bearings, copper wiring, and lubricating oil. The process starts with removing the gearbox from the wind turbine using a crane, which incurs costs ranging from $10,000 to $50,000 per unit.
After removal, gearboxes are disassembled at recycling facilities where hardened steel gears and housings are separated for scrap metal recovery. Bronze bearings and copper wiring are extracted for their high market value. The lubricating oil is collected separately for re-refining or disposal according to EPA used oil regulations and EU Waste Oil Directive guidelines.
According to the European Parliament, less than 1% of rare earth elements in e-waste are currently recycled.
What Does Wind Turbine Decommissioning Cost?
Wind turbine decommissioning costs vary widely but typically range from $10,000 to $50,000 per gearbox. These expenses cover the removal process and crane hire fees necessary for safely disassembling the wind turbine.
The high cost reflects not only the physical labor involved in dismantling a large piece of machinery but also the specialized equipment needed to handle heavy components like gearboxes weighing several tons each.
According to the WHO, e-waste contains over 1,000 different substances, many of them toxic.
What Materials Are Recovered?
Wind Turbine Gearbox Recycling recovers multiple materials including hardened steel gears, steel housing, bronze bearings, lubricating oil (300-800 litres), and copper wiring. Each material has its own recovery potential and market value:
- Hardened Steel Gears: Valuable scrap metal that can be sold to recycling facilities.
- Steel Housing: Similar to the gears, this is also recycled for its steel content.
- Bronze Bearings: High-value materials due to their composition of copper and tin.
- Lubricating Oil (300-800 litres): Recovered oil can be re-refined into new lubricants or disposed of safely according to regulations.
- Copper Wiring: Copper is highly valued in the scrap metal market.
Regulations on Wind Turbine Waste
Regulations surrounding wind turbine waste focus heavily on proper disposal and recycling practices. For instance, lubricating oils must follow strict EPA used oil regulations and EU Waste Oil Directive guidelines to ensure environmental safety during disposal or re-refining processes.
Steel components are handled under standard scrap metal rules, which encourage recycling over landfilling due to the significant economic value of recovered metals.
The Wind Waste Problem
The wind waste problem is substantial as gearboxes represent a major component that frequently needs replacement. With a 15-20% failure rate during turbine lifetimes (typically 20 years), gearboxes become the most replaced part, creating consistent demand for recycling services and refurbishment options.
This steady stream of decommissioned gearboxes presents both challenges and opportunities in terms of waste management and resource recovery. As wind energy continues to grow globally, so too does the volume of gearbox waste that needs responsible handling through effective recycling practices and secondhand markets.
Sources
- UN Global E-Waste Monitor 2024
- European Parliament
- WHO
Frequently Asked Questions
Can wind turbine gearboxs be recycled?
Yes, though methods vary. Current options include Steel scrap recovery (primary value), Oil reclamation and re-refining. Steel and copper components are highly recyclable (95%+). Composite blades are the hardest part to recycle, but new technologies are emerging.
How much does wind turbine decommissioning cost?
Full turbine decommissioning costs $10,000-50,000 per gearbox (removal + crane hire). Costs depend on turbine size, site access, crane availability, and whether the foundation is removed or left in place.
Do wind turbine blades end up in landfill?
Some do, particularly in the US where no federal ban exists. An estimated 8,000 blades per year are landfilled in the US. Germany, Netherlands, and Finland banned blade landfilling from 2025. Recycling alternatives are scaling up.
What are wind turbine blades made of?
Most blades use fiberglass reinforced with epoxy resin, with a balsa wood or foam core. Newer, longer blades (60m+) use carbon fiber spar caps for added stiffness. The composite construction is what makes recycling difficult.