Current low carbon technologies
IRENA’s 1.5°C pathway envisions solar and wind supplying 63% of global power by 2050, up from 10% today. But scaling renewables raises concerns about the availability of critical minerals like lithium. Current supply chains may struggle to keep pace, with rising costs and new geopolitical dependencies adding further complexity.
Wind Energy
Modern wind turbines contain over 8,000 parts, grouped into three main components (tower, blades, gearbox) representing approximately 61% of the total cost of turbines. Approximately 85% of turbine components are recyclable, and yet, very few actually get recycled.
Most have been installed in the past decade, and it remains uncertain whether they will reach their intended 20–25-year lifespan. After about 10 years, parts like blades and gearboxes often require replacement. As turbines age, operators must decide whether to continue operation, repower with larger turbines, or fully decommission the site.
Life cycle assessments show that reusing materials like steel, copper and rare earths in wind farms can cut resource use and ease supply chain strain. While wind energy runs clean, it’s early stages including mining, manufacturing and transport carry heavy environmental costs.
The question is, what changes need to take place for more renewable energy components to be recycled, reused or remanufactured?
Solar Energy
Photovoltaic (PV) panels typically last approximately 25 years depending on material quality and conditions. Current recycling focuses on copper, aluminium frames, and repurposed glass laminate for low-purity applications like road glass beads or fiberglass – missing high-value recovery.
As solar adoption grows, PV waste is projected to reach 78 million tons by 2050. A circular model is urgently needed, emphasising reuse, resource recovery, and waste reduction. But, challenges remain - high recycling costs, limited infrastructure, and unclear reuse feasibility for discarded panels – and need to be addressed.
Proposed solutions
Circular practices are essential to address the scarcity of critical materials in renewable energy. This demands systemic innovation collaboration across sectors.
Key actions:
- Manufacturers: Redesign products for disassembly and reuse
- Processors & Retailers: Invest in circular business models
- Regulators: Incentivize resource recovery and end-of-life management
Regulators are starting to push for material recovery, particularly through schemes like Extended Producer Responsibility that include waste electrical and electronic equipment as an identified sector for regulation. But we have not seen enough incentives and grants to support the establishment of recycling businesses and infrastructure that are capable of reclaiming critical raw materials at the scale required.
When a wind turbine breaks down, there are limited options for dismantling and recycling. The clear gap between national recycling systems and renewable energy equipment is slowing progress. Engineering and recycling industries need to collaborate, with stronger rules needed to ensure clean-up and recovery at the end of a project’s life.
There is also scope for stronger rules for renewable energy projects. These would require companies to clean up sites when the equipment is no longer useful and to recover important raw materials from the old equipment.
Recyclers also face technical challenges. Critical materials are embedded in components that traditional sorting systems can’t separate, demanding new solutions.
Conclusion
The energy transition relies on critical materials as much as clean technology. Circular economy principles offer a way to manage those resources through smarter design, reuse, and recovery.
As demand grows, supply risks could slow progress. To keep momentum, energy systems must be built with long-term resilience and material stewardship in min